Blends of block copolymer and acrylic adhesives

The present disclosure relates to block copolymer adhesives. Specifically, it relates to an acrylic modified block copolymer pressure sensitive adhesive.

Adhesives and tapes are commonly used to bond two substrates together to form an adhesive complex. While a wide range of adhesives and tapes are available, improved substrate and end-use requirements continue to drive the need for new adhesive formulations and tape construction. In addition to performance characteristics, environmental control and processing costs also affect product formulation requirements. For example, in some applications it may be desirable to use hot melt adhesives rather than solvent adhesives.

Several efforts have been aimed at identifying and developing new materials for use in the formulation of adhesives, but by identifying, selecting and combining the appropriate properties of existing raw materials, further progress can be made. Useful adhesives and tapes can be reached.

<p num="0004"> Briefly, in one aspect, the disclosure provides a pressure sensitive adhesive composition comprising 92-99.9 parts of a block copolymer adhesive composition and less than 0.1-10 parts of an acrylic adhesive composition. .. The block copolymer adhesive composition comprises at least one rubbery block containing (i) a first polymerization conjugated diene, a hydrogenated derivative thereof or a combination thereof, and (ii) at least one containing a first polymerization monovinyl aromatic monomer. Includes first block copolymers, including glassy blocks. The acrylic adhesive composition comprises 70 to 100 parts, at least one of acrylic acid or methacrylic acid ester of a non-tertiary alkyl alcohol containing 4 to 20 carbon atoms, and 0 to 30 parts of a copolymer-enhancing monomer. including.</p><p num="0005"> In certain embodiments, the first block copolymer is the general formula Q._n-Y (in the formula, Q represents the arms of the multi-arm block copolymer, n represents the number of arms, an integer of at least 3, and Y is the residue of the polyfunctional coupling agent) multi-arm block It is a copolymer. Each arm Q independently has the formula RG, in which R represents a rubber-like block and G represents a glass-like block. In one embodiment, the first block copolymer is a multimode, asymmetrical star block copolymer.</p><p num="0006"> In certain embodiments, the pressure sensitive adhesive is at least one rubbery block containing a polymerized second conjugated diene, a hydrogenated derivative thereof, or a combination thereof, and at least one glassy material containing a second polymerized monovinyl aromatic monomer. It further comprises a second block copolymer containing a block. In certain embodiments, the second block copolymer is a linear block copolymer.</p><p num="0007"> In certain embodiments, the pressure sensitive adhesive is a first high Tg tackifier having a Tg of at least 60 ° C, further comprising a first high Tg tackifier compatible with at least one rubbery block. In certain embodiments, the block copolymer adhesive composition is a second high Tg tackifier having a Tg of at least 60 ° C, further comprising a second high Tg tackifier compatible with at least one glassy block. Including.</p><p num="0008"> In certain embodiments, the pressure sensitive adhesive is a hot melt adhesive. In certain embodiments, the pressure sensitive adhesive is a solvent type adhesive.</p><p num="0009"> In another aspect, the present disclosure is a foam lining having a first and second main surface and a first adhesive skin that adheres to the first main surface, either within the scope of the claims. Provided is a tape containing a first adhesive skin containing the first pressure sensitive adhesive according to paragraph 1. In certain embodiments, the tape further comprises a second adhesive skin that is attached to the second main surface.</p><p num="0010"> In certain embodiments, the backing material is a foam backing material. In certain embodiments, the foam comprises a thermoplastic foam. In certain embodiments, the foam comprises a thermosetting foam.</p><p num="0011"> In yet another aspect, the present disclosure provides a method of making a tape. In one embodiment, the method is a step of extruding a foam backing material and a first adhesive skin that coextrudes a first pressure sensitive adhesive and adheres to a first main surface of the foam backing material. Including the step of forming. In certain embodiments, the method further comprises the step of extruding a second adhesive to form a second adhesive skin that adheres to the second main surface of the foam backing.</p><p num="0012"> In certain embodiments, the method comprises providing a foam backing material and applying a first adhesive composition comprising a first pressure sensitive adhesive to a first surface of the foam backing material. In certain embodiments, the application of the first adhesive composition comprises laminating.</p><p num="0013"> In certain embodiments, the application of the first adhesive composition comprises coating, optionally the method further comprises cross-linking of the first adhesive composition, and optionally the cross-linking of the first adhesive composition comprises radiation cross-linking.</p><p num="0014"> In another aspect, the present disclosure comprises a first substrate having a first surface, a second substrate having a second surface, a first surface of the first substrate and a second surface of the second substrate. Provided is an adhesive interface including an adhesive interface including a pressure-sensitive adhesive according to the present disclosure. In certain embodiments, the first surface has a surface energy of less than 35 dynes / cm.</p><p num="0015"> The above outline of the present disclosure is not intended to describe each embodiment of the present invention. In addition, details of one or more embodiments of the present invention are shown in the following specification. Other features, objectives, and advantages of the present invention are apparent from the specification and claims.</p>

<figref num="1">It is a schematic diagram of the tape by an embodiment of this disclosure.</figref><figref num="2">It is a schematic diagram of the adhesive complex according to an embodiment of the present disclosure.</figref>

In one aspect, the present disclosure provides a pressure sensitive adhesive composition comprising both a block copolymer adhesive composition and an acrylic adhesive composition. In certain embodiments, the pressure sensitive adhesive further comprises one or more additional block copolymers, one or more tackifiers, other additives, and combinations thereof.

In some embodiments, the pressure sensitive adhesive composition comprises at least about 90 parts, in some embodiments at least about 92 parts, and in some embodiments at least about 96 parts of a block copolymer adhesive composition. In some embodiments, the pressure sensitive adhesive composition comprises about 99.9 parts or less, in some embodiments about 99 parts or less, or even about 98 parts or less of a block copolymer adhesive composition. In some embodiments, the pressure sensitive adhesive composition comprises 92-99.9 parts, and in some embodiments 96-99 parts of a block copolymer adhesive composition.

The first block copolymer contains a rubbery block R and at least one glassy block G. In certain embodiments, the first block copolymer comprises at least three vitreous blocks. In certain embodiments, the first block copolymer comprises 3 or more and 5 or less glassy blocks. In certain embodiments, the first block copolymer comprises four vitreous blocks.

In certain embodiments, the first block copolymer is the general formula Q._n-Multi-arms with Y (in the formula, Q represents the arms of the multi-arm block copolymer, n represents the number of arms, an integer of at least 3 and Y is the residue of the polyfunctional coupling agent). It is a block copolymer. Each arm Q independently has the formula RG, in which G represents a glass-like block and R represents a rubber-like block.

In general, rubbery blocks exhibit a glass transition temperature (Tg) below room temperature. In some embodiments, the Tg of the rubbery block is less than about 0 ° C, or even less than about -10 ° C. In some embodiments, the Tg of the rubbery block is less than about -40 ° C, or even less than about -60 ° C.

Generally, glassy blocks exhibit Tg above room temperature. In certain embodiments, the Tg of the glassy block is at least about 40 ° C, at least about 60 ° C, at least about 80 ° C, or even at least about 100 ° C.

In certain embodiments, the rubbery block comprises a polymerization conjugated diene, a hydrogenated derivative of the polymerization conjugated diene, or a combination thereof. In some embodiments, the conjugated diene comprises 4-12 carbon atoms. Typical conjugated dienes include butadiene, isoprene, ethyl butadiene, phenyl butadiene, piperylene, pentadiene, hexadiene, ethyl hexadiene, and dimethyl butadiene. Polymerized conjugated diene can be used individually or as copolymers with each other. In certain embodiments, the conjugated diene is selected from the group consisting of isoprene, butadiene, ethylene butadiene copolymers, and combinations thereof.

In certain embodiments, at least one glassy block comprises a polymerized monovinyl aromatic monomer. In certain embodiments, both glassy blocks of triblock copolymers contain a polymerized monovinyl aromatic monomer. In certain embodiments, the monovinyl aromatic monomer contains 8-18 carbon atoms. Typical monovinyl aromatic monomers include styrene, vinylpyridine, vinyltoluene, α-methylstyrene, methylstyrene, dimethylstyrene, ethylstyrene, diethylstyrene, t-butylstyrene, di-n-butylstyrene, isopropylstyrene, Other alkylated styrenes, styrene analogs, and styrene homologues can be mentioned. In certain embodiments, the monovinyl aromatic monomer is selected from the group consisting of styrene, styrene compatible monomers or monomer blends, and combinations thereof.

As used herein, "styrene-compatible monomer or monomer blend" refers to a monomer or monomer blend that can be polymerized or copolymerized preferentially with the polystyrene-terminated blocks of polystyrene or block copolymers. .. Compatibility is the actual copolymerization with monomeric styrene, the solubility of the compatible monomer or blend in the polystyrene phase during hot melt or solvent treatment, or the solubility of the polymerized monomer or blend, or the monomer during standing after treatment. Alternatively, it may be due to the binding of the blend to the domain of the styrene-rich phase.

General formula for multi-arm block copolymers with this disclosure, Q_nIn -Y, n represents the number of arms, which is an integer of at least 3, that is, a multi-arm block copolymer is a star-shaped block copolymer. In some embodiments, n ranges from 3 to 10. In some embodiments, n is in the range 3-5. In some embodiments, n is 4. In some embodiments, n corresponds to 6 or greater.

In certain embodiments, the first block copolymer is a multimode block copolymer. As used herein, the term "polymodal" means that a copolymer comprises a vitreous block having at least two different molecular weights. Such block copolymers can also be characterized by having at least one "high" molecular weight vitreous block and at least one "low" molecular weight vitreous block, where the terms high and low are relative to each other. Used for. In one embodiment, the number average molecular weight (Mn) of the high molecular weight glassy block_HAnd the number average molecular weight (Mn) of low molecular weight glassy blocks_LThe ratio to is at least about 1.25.

In some embodiments, (Mn)_HIs in the range of about 5,000 to about 50,000. In some embodiments, (Mn)_HIs at least about 8,000, and in some embodiments at least about 10,000. In some embodiments, (Mn)_HIs less than about 35,000. In some embodiments, (Mn)_LIs in the range of about 1,000 to about 10,000. In some embodiments, (Mn)_LIs at least about 2,000, and in some embodiments at least about 4,000. In some embodiments, (Mn)_LIs less than about 9,000, and in some embodiments less than about 8,000.

In certain embodiments, the first block copolymer is an asymmetric block copolymer. As used herein, the term "asymmetric" means that not all of the arms of block copolymers are identical. In general, multimode block copolymers do not all have the same molecular weight of glassy blocks, so not all arms of multimode block copolymers are the same, and thus asymmetric block copolymers (ie, multimode and asymmetric). Block copolymer). In certain embodiments, the block copolymers of the present disclosure are multimode and asymmetric block copolymers. Methods for making asymmetric multimode block copolymers are described, for example, in US Pat. No. 5,296,547.

In general, a polyfunctional coupling agent is any polyalkenyl coupling agent or other substance known to have a functional group capable of reacting with a carbanion of a living polymer to form a crosslinked polymer. It's okay. The polyalkenyl coupling agent may be aliphatic, aromatic or heterocyclic. Representative aliphatic polyalkenyl coupling agents include polyvinyl and polyalkyl acetylenes, diacetylenes, phosphates, phosphates, and dimethacrylates (eg, ethylene dimethacrylate). Typical aromatic polyalkenyl coupling agents include polyvinylbenzene, polyvinyltoluene, polyvinylxylene, polyvinylanthracene, polyvinylnaphthalene, and divinyljurene. Typical polyvinyl groups include divinyl, trivinyl and tetravinyl groups. In certain embodiments, divinylbenzene (DVB) can also be used, including o-divinylbenzene, m-divinylbenzene, p-divinylbenzene, and blends thereof. Typical heterocyclic polyalkenyl coupling agents include divinylpyridine and divinylthiophene. Other typical polyfunctional coupling agents include silicon halides, polyepoxides, polyisocyanates, polyketones, polyanhydrides, and dicarboxylic acid esters.

In some embodiments, the pressure sensitive adhesive compositions of the present disclosure comprise at least about 0.1 parts, in some embodiments at least about 0.5 parts, at least about 1 part, or even at least about 2 parts of the acrylic adhesive composition. In some embodiments, the pressure sensitive adhesive compositions of the present disclosure include about 10 parts or less, and in some embodiments about 8 or less, about 5 or less, or even about 4 or less acrylic adhesive compositions.

In certain embodiments, the non-tertiary alkyl alcohol contains 4 to 20 carbon atoms. Typical acrylic acid esters include isooctyl acrylate, 2-ethylhexyl acrylate, butyl acrylate, isobornyl acrylate, and combinations thereof. Representative methacrylic acid esters include methacrylate analogs of these acrylic acid esters.

In certain embodiments, the acrylic adhesive composition comprises at least one reaction product of an acrylic acid ester or a methacrylic acid ester of a non-tertiary alkyl alcohol and optionally at least one copolymer strengthening monomer. In some embodiments, the acrylic adhesive composition comprises at least about 70 parts, in some embodiments at least about 80 parts, at least about 90 parts, at least about 95 parts, or even about 100 parts, at least one non-tertiary alkyl. Includes acrylic acid or methacrylic acid ester of alcohol. In some embodiments, the acrylic adhesive composition comprises at least one copolymer-enhanced monomer of about 30 parts or less, in some embodiments about 20 parts or less, about 10 parts or less, about 5 parts or less, and even 1 part or less. including. In certain embodiments, the acrylic adhesive composition is free of copolymerization-enhancing monomers.

In certain embodiments, the copolymer-enhanced monomer consists of a group consisting of acrylic acid, methacrylic acid, 2-carboxyethyl acrylate, N, N'dimethylacrylamide, N, N'diethylacrylamide, butylcarbamoylethyl acrylate, and combinations thereof. Be selected.

In certain embodiments, the block copolymer adhesive composition comprises a second block copolymer. In certain embodiments, the second block copolymer may be a linear block copolymer. Linear block copolymers have the formula R- (G)_m (In the formula, R represents a rubber-like block, G represents a glass-like block, and m, which is the number of glass-like blocks, is 1 or 2). In one embodiment, m is 1, and the linear block copolymer is a diblock copolymer containing one rubber block and one glass block. In one embodiment, m is 2, the linear block copolymer comprises two glassy terminal blocks and one rubbery central block, i.e. the linear block copolymer is a triblock copolymer.

In certain embodiments, the rubbery block of the second block copolymer comprises a polymerization conjugated diene, a hydrogenated derivative thereof, or a combination thereof. In some embodiments, the conjugated diene comprises 4-12 carbon atoms. Typical conjugated diene useful in the second block copolymer includes any of the above representative conjugated diene.

In some embodiments, at least one glassy block, and in some embodiments, each glassy block of the second block copolymer comprises a polymerized monovinyl aromatic monomer. In certain embodiments, the monovinyl aromatic monomer contains 8-18 carbon atoms. Examples of the typical polymerized monovinyl aromatic monomer useful in the second block copolymer include any of the above-mentioned typical polymerized monovinyl aromatic monomers.

In certain embodiments, the block copolymer adhesive compositions of the present disclosure include a first high Tg tackifier having a glass transition temperature (Tg) of at least 60 degrees Celsius (° C). As used herein, the terms "high glass transition temperature tackifier" and "high Tg tackifier" refer to tackifiers having a glass transition temperature of at least 60 ° C. In certain embodiments, the Tg of the first high Tg tackifier is at least 65 ° C, or even at least 70 ° C. In some embodiments, the first high Tg tackifier has a softening point of at least about 115 ° C, and in some embodiments it has a softening point of at least about 120 ° C.

The first high Tg tackifier is primarily compatible with the rubbery blocks of the first block copolymer. In certain embodiments, the first high Tg tackifier is also compatible with the rubbery blocks of the second block copolymer. In certain embodiments, the first high Tg tackifier is primarily compatible with the rubbery blocks of the first and optionally second block copolymers.

As used herein, the tackifier "fits" the block if it is miscible with the block. In general, the miscibility of a block with a tackifier can be determined by measuring the effect of the tackifier on the Tg of the block. If the tackifier is miscible with the block, the tackifier changes (eg, raises ) the Tg of the block .

The tackifier is "mainly compatible" with the block, at least if it is miscible with the block, but may also be miscible with other blocks. For example, a tackifier that is mainly compatible with rubber-like blocks is miscible with rubber-like blocks, but may also be miscible with glass-like blocks.

In general, resins with relatively low solubility parameters tend to bind to rubbery blocks, but their solubility in glassy blocks tends to increase as the molecular weight or softening point of these resins decreases. .. Typical tackifiers that are mainly compatible with rubber-like blocks include polymerized terpenes, heterofunctional terpenes, kumaron-inden resins, loginate esters, disproportionate loginate esters, hydrocarbonized loginates, and C5 aliphatic resins. , C9 hydrogenated aromatic resin, C5 / C9 aliphatic / aromatic resin, dicyclopentadiene resin, hydrogenated hydrocarbon resin derived from C5 / C9 and dicyclopentadiene precursor, hydrogenated styrene monomer resin, and blends thereof. Can be mentioned.

In certain embodiments, the block copolymer adhesive composition is predominantly compatible with the glassy blocks of the first block copolymer (s) and optionally the glassy blocks of the second block copolymer (s). Contains high Tg tackifier. In general, a tackifier that is primarily compatible with glassy blocks is miscible with glassy blocks and may be miscible with rubbery blocks.

In general, resins having a relatively high solubility parameter tend to bind to glassy blocks, but when the molecular weight or softening point of these resins decreases, the solubility in rubbery blocks tends to increase. Typical tackifiers that are mainly compatible with glassy blocks include kumaron-indene resin, rosin acid, rosin acid ester, disproportionate rosin acid ester, C9 aromatics, α-methylstyrene, C9 / C5 aromatics. Modified aliphatic hydrocarbons and blends thereof.

In certain embodiments, the pressure sensitive adhesives of the present disclosure further comprise at least one component selected from the group consisting of low Tg tackifiers, plasticizers, and combinations thereof. As used herein, the term "low glass transition temperature tackifier" refers to a tackifier having a glass transition temperature of less than 60 ° C. A typical low Tg tackifier is polybutene.

In general, plasticizers are compatible with one or more blocks of linear block copolymers and / or one or more blocks of multiarm block copolymers. In general, a plasticizer compatible with a block is miscible with the block and reduces the Tg of the block. Typical plasticizers include naphthenic oil, liquid polybutene resin, polyisobutylene resin, and liquid isoprene polymer.

In certain embodiments, the ratio of multi-arm block copolymers to linear block copolymers ranges from 1.5: 1 to 9: 1. In certain embodiments, the ratio of multiarm block copolymers to linear block copolymers is at least 1.85: 1, or even at least 3: 1. In certain embodiments, the ratio of multiarm block copolymers to linear block copolymers is 5.7: 1 or less, or even 4: 1 or less.

In certain embodiments, the ratio of the total amount of the high glass transition temperature tackifier to the block copolymer is in the range 0.8: 1 to 1.25: 1. In certain embodiments, the ratio of the total amount of the high Tg tackifier to the block copolymer is at least 0.85: 1, or even at least 0.9: 1. In certain embodiments, the ratio of the total amount of the high Tg tackifier to the block copolymer is 1.15: 1 or less, or even 1.1: 1 or less.

In certain embodiments, the ratio of the rubber block compatible high Tg tackifier to the glass block compatible high Tg tackifier ranges from 1: 1 to 9: 1. In certain embodiments, the ratio of the rubber block compatible high Tg tackifier to the glass block compatible high Tg tackifier is at least 1.25: 1 or even at least 1.5: 1. In certain embodiments, the ratio of the rubber block compatible high Tg tackifier to the glass block compatible high Tg tackifier is 4: 1 or less, or even 3: 1 or less.

In certain embodiments, the ratio of the combination of block copolymer and high Tg tackifier to the acrylate component is at least 8.3: 1. In certain embodiments, the ratio of the combination of block copolymer and high Tg tackifier to the acrylate component is at least 12.5: 1, at least 22: 1, at least 90: 1, or even at least 180: 1. In some embodiments, the pressure sensitive adhesive comprises 10% by weight or less, and in some embodiments 8% by weight or less, 4% by weight or less, 1% by weight or less, or even 0.5% by weight or less of an acrylate component.

In certain embodiments, the ratio of the combination of block copolymers, high Tg tackifiers, and acrylate components to liquid plasticizers ranges from 32: 1 to 10: 1. In certain embodiments, the ratio of the combination of block copolymer, high Tg tackifier and acrylate component to the acrylate component is 25: 1 or less, or even 20: 1 or less. In certain embodiments, the ratio of the combination of block copolymer, high Tg tackifier, and acrylate component to the acrylate component is at least 12.5: 1.

In certain embodiments, the pressure sensitive adhesive of the present disclosure is a hot melt adhesive. As used herein, hot melt adhesives can be coated onto a substrate or thin layer carrier at a processing temperature significantly above normal room temperature, but retain useful pressure sensitive adhesive properties at room temperature. Such as a polymer having a melt viscosity profile or a mixed polymer material.

The pressure-sensitive adhesive composition of the present invention can be produced using a method known in the art. For example, they dissolve block copolymers, suitable tackifiers, any plasticizer (s), and any other additive in suitable solvents and conventional means (eg, knife coating, roll coating). , Gravure coating, rod coating, curtain coating, spray coating, air knife coating) can be produced by coating on a substrate (eg, peeling liner, tape backing, core or panel). In some embodiments, the pressure sensitive adhesive is a substantially solvent-free process (ie, the adhesive is about 20% by weight or less, in some embodiments about 10% by weight or less, in some embodiments about 5% by weight or less. , In some embodiments, it is prepared with less than 1% by weight of solvent, or even trace amounts of solvent (ie, essentially free of solvent). Such virtually solvent-free processes are known, for example calendering or roll kneading, and extrusion (eg, uniaxial, biaxial, disc screw, reciprocating uniaxial, pin barrel uniaxial). Etc.). Commercial equipment such as BRABENDER or BANBURY sealed mixers are also available for batch mixing of adhesive compositions. After compounding, the adhesive can be coated and passed through a die into the desired form, such as an adhesive layer, or may be collected for later molding.

In another aspect, the present disclosure provides a tape comprising a backing material and a pressure sensitive adhesive adhered to at least one main surface of the backing material. In certain embodiments, the tape comprises a wick and a skin adhesive that adheres to both main surfaces of the wick, at least one skin adhesive being a pressure sensitive adhesive. In certain embodiments, both skin adhesives are pressure sensitive adhesives. In certain embodiments, both skin adhesives are the same adhesive. In certain embodiments, the skin adhesives are different adhesives.

As used herein, the term "core" is compatible with the term "lining" when referring to a double-sided tape structure, i.e. a tape structure having an adhesive layer on the main surface of both the backing material or the core. Can be used as a target.

At least one skin adhesive of the tapes of the present disclosure is a pressure sensitive adhesive comprising a blend of a block copolymer adhesive composition and an acrylic adhesive composition, as described herein. In certain embodiments, the second skin adhesive may be a heat activated adhesive. In certain embodiments, both skin adhesives are pressure sensitive adhesives, including a blend of a block copolymer adhesive composition and an acrylic adhesive composition, as described herein.

In certain embodiments, one or more skin adhesives can be adhered directly to the main surface of the lining or core. In certain embodiments, one or more skin adhesives can be indirectly adhered to the main surface of the backing material or core. In certain embodiments, for example, an undercoat layer can be inserted between the skin adhesive and the main surface. Useful primer is generally known and includes, for example, the primer described in US Pat. No. 5,677,376 (Groves) and 5,605,964 (Gloves).

Any known backing material or core can be used. Typical backing materials include paper and polymeric films (eg polyethylene, polyurethane, polyester and polypropylene), metal foils, and woven and non-woven webs. In certain embodiments, a backing material or core containing a foam, such as an open cell foam or a closed cell foam, can be used. In certain embodiments, the foam may comprise a thermoplastic foam. In certain embodiments, the foam may comprise a thermosetting foam. Typical foams include acrylic foams, polyethylene foams, and polyurethane foams. Typical foams are also published, for example, in the Handbook of Polymer Foams, edited by David Eaves, Shawbury (Shropshire, Shrewsbury, UK). , Rapra Technology, also listed in 2004.

Referring to FIG. 1, a representative tape 10 according to an embodiment of the present disclosure includes a backing material (or core) 30 and two adhesive layers. The first adhesive layer 20 is adhered to the first main surface 31 of the backing material 30, while the second adhesive layer 40 is adhered to the second main surface 32 of the backing material 30. As shown in FIG. 1, both the first adhesive layer 20 and the second adhesive layer 40 are directly adhered to the main surface of the backing material 30. In certain embodiments, one or both adhesive layers can be indirectly adhered to the backing material 30. For example, in some embodiments, one or more additional layers (eg, undercoat, adhesion-promoting layer, film, web, scrim, etc.) can be inserted between the backing and the adhesive layer.

In another aspect, the present disclosure provides an adhesive complex. As used herein, the adhesive complex comprises a first substrate having a first main surface and a second substrate having a first main surface, the first main surface of the first substrate being adhered. It is adhered to the first main surface of the second base material through the interface. In the adhesive composite of the present disclosure, the adhesive interface is a core having a first skin adhesive adhering to the first main surface of the core and a second skin adhesive adhering to the second main surface of the core. including. At least one skin adhesive at the adhesive interface of the present disclosure comprises a blend of a block copolymer adhesive composition and an acrylic adhesive composition as described herein. In certain embodiments, both skin adhesives are pressure sensitive adhesives, including a blend of a block copolymer adhesive composition and an acrylic adhesive composition, as described herein.

In certain embodiments, the first substrate comprises a metal, glass, ceramic or polymer material, and combinations thereof. In certain embodiments, the first substrate comprises a primed surface, a coated surface, or a polymeric surface. In certain embodiments, the coated surface may include an automotive paint or a clear coat.

In certain embodiments, the first main surface of the first substrate is a low surface energy surface. As used herein, a low surface energy surface means a surface whose measured surface energy is less than about 35 dynes / cm. The surface energy of the surface can be tested according to ASTM standard D2578. Suitable test kits include, for example, the ACCU-DYNE surface wetability kit, available from Diversified Enterprises (Claremont, Hampshire).

In certain embodiments, the second substrate comprises a metal, glass, ceramic, or polymeric material, and combinations thereof. In certain embodiments, the second substrate comprises a primed surface, a coated surface, or a polymeric surface. In certain embodiments, the coated surface may include an automotive paint or a clear coat. In certain embodiments, the first main surface of the second substrate is a low surface energy surface.

In certain embodiments, the core of the adhesive interface comprises a foam, such as an open cell foam or a closed cell foam. In certain embodiments, the foam comprises a thermoplastic foam. In certain embodiments, the foam comprises a thermosetting foam. In certain embodiments, the foam comprises an acrylic foam. In certain embodiments, the foam is a flexible foam. In general, a flexible foam is a foam that, when in sheet form, can fold over itself without crushing. Typical foams are, for example, Handbook of Polymer Foams, edited by David Eaves, Shrewsbury (Shropshire, Shrewsbury, UK). Published in Rapra Technology, 2004.

Referring to FIG. 2, a representative adhesive complex 50 according to an embodiment of the present disclosure includes a first substrate 60 that is adhered to a second substrate 70 via an adhesive interface 110. The adhesive interface 110 includes a backing material (or core) 130 and two adhesive layers. The first adhesive layer 120 is adhered to the first main surface of the backing material 130, while the second adhesive layer 140 is adhered to the second main surface of the backing material 130. As shown in FIG. 2, both the first adhesive layer 120 and the second adhesive layer 140 are directly adhered to the main surface of the backing material 130. In certain embodiments, one or both of the adhesive layers may be indirectly adhered to the backing material 130.

As shown in FIG. 2, in one embodiment, the first adhesive layer 120 is directly adhered to the main surface 61 of the first substrate 60. Similarly, in one embodiment, the second adhesive layer 140 is directly adhered to the main surface 71 of the second substrate 70. In certain embodiments, one or both of the adhesive layers may be indirectly adhered to the main surface of the substrate. For example, in some embodiments, one or more additional layers (eg, undercoat layer, adhesion promoting layer, film, web, scrim, etc.) can be inserted between the adhesive layer and the substrate.

In another aspect, the present disclosure provides a method of producing a tape comprising a backing material or a core, wherein the backing material or the core contains a foam as described above. The tape comprises at least one skin adhesive, which is a pressure sensitive adhesive comprising a blend of a block copolymer adhesive composition and an acrylic adhesive composition as described herein. Is.

In certain embodiments, the method comprises the step of extruding the foam. In certain embodiments, the method further comprises the step of extruding at least one skin adhesive. In certain embodiments, the foam and at least one skin adhesive are coextruded. Extrusion molding methods for polymer foams and coextrusion molding methods for polymer foams and skin adhesives are described, for example, in US Pat. Nos. 6,103,152 (Gehlsen et al.) And 6,630,531 (Khandpur et al.). It is described, both of which have been assigned to the Applicant and are incorporated herein by reference in their entirety.

In one embodiment, the method for producing the foam core tape is a step of extruding the foam core and a first coextrusion molding of a first pressure sensitive adhesive as described herein. It includes the step of forming a first adhesive skin that is adhered to the main surface. In certain embodiments, the method further comprises the step of extruding a second adhesive to form a second adhesive skin that adheres to the second main surface of the foam core.

In certain embodiments, the method of making a foam core tape is a step of providing a foam core that can be made by extrusion or any other known means, and a first sensation as described herein. It includes a step of applying a first adhesive composition containing a pressure adhesive to a first surface of a foam core. The first adhesive composition can be applied, for example, by lamination or coating (eg, knife coating, roll coating, gravure coating, rod coating, curtain coating, spray coating or air knife coating).

In certain embodiments, the second adhesive can be extruded independently or co-extruded with the foam and / or the first adhesive. In certain embodiments, the second adhesive can be applied to the foam core, for example by laminating or coating.

In certain embodiments, the first and / or second adhesive may be cured. Any known curing process can be used, such as thermosetting and radiation curing. In certain embodiments, one or both of the adhesives may be crosslinked via, for example, electron beam irradiation or exposure to chemical rays such as ultraviolet light.

<p num="0073"> The following specific but non-limiting examples serve to illustrate the invention. In these examples, all percentages are by weight, unless otherwise indicated.</p><p num="0074"><tables num="1"><img id="000002" he="218" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0075"> Preparation of acrylic polymer Acrylic polymers (AP-1) were prepared by mixing 45 parts IOA, 45 parts BA, 10 parts AA, 0.15 parts Irgacure 651, and 0.06 parts IOTG. A Discreet film packaging was formed from the packaging film (CT film (0.0635 mm thick ethylene vinyl acetate copolymer film sold as VA-24 film by Dallas, Texas). AP-1 composition. Was sealed in a film package measured approximately 10 cm (cm) x 5 cm x 0.5 cm thick, while immersed in a water bath maintained between approximately 21 ° C and approximately 32 ° C. The packaging was exposed to ultraviolet (UV) with an intensity of about 3.5 milliwatts / square centimeter (mW / sq cm) and a total energy of about 1680 millijoules / square centimeter (mJ / sq cm) when measured in NIST units. The formation and curing method of the film is described in Example 1 of US Pat. No. 5,804,610, which is incorporated by reference in its entirety.</p><p num="0076"> Acrylic polymer 2 (AP-2) was prepared according to the procedure of AP-1, except that 85 parts of 2-EHA, 15 parts of AA, 0.15 parts of Irgacure 651, and 0.8 parts of IOTG were used. Similarly, Acrylic Polymer 3 (AP-3) was prepared according to the procedure for Acrylic Polymer 1, except that 95 parts 2-EHA, 5 parts AA, 0.15 parts Irgacure 651, and 0.03 parts IOTG were used. .. AP-2 and AP-3 were placed in packaging and exposed to UV energy according to the procedure for AP-1.</p><p num="0077"> 1st skin adhesive The pressure sensitive adhesives according to the compositions shown in Table 2 were blended using a 60 mm co-rotating twin-screw extruder (available from Berserff) (first adhesive extruder). Multimode and asymmetric star block copolymers ("PASBC") were prepared in accordance with US Pat. No. 5,393,373, which is incorporated herein by reference in its entirety. The polymer consists of two terminal blocks with a number average molecular weight of approximately 6.6E-21g (4,000 Dalton) and approximately 3.6E-20g (21,500 Dalton) as measured by SEC (Size Exclusion Chromatography) calibrated using polystyrene standards. It had arms of 2.1E-19g (127,000 Dalton) to 2.4E-19g (147,000 Dalton) and stars of about 1.8E-18g (1,100,000 Dalton). The polystyrene content was 9.5 to 11.5% by weight. The high molecular weight of the arm was estimated to be about 30%.</p><p num="0078"> Multimode and asymmetric block copolymers and linear styrene-isoprene-styrene (SIS) copolymers (Craton 1161-D) were dry-injected into the first region of the first adhesive extruder. Using a roll feeder extruder (available from Berstorff), either the acrylic polymers AP-1 or AP-2 were heated and injected into the third region of the first adhesive extruder. Dry injection of antioxidant (Irganox 1010), UV absorber (Chinubin 328), colored EVA (4900CMB), and (Legalite R1125), (Kumer 130) and (Niplast 222B), first adhesive extruder It was melt-injected into various regions of the.</p><p num="0079"><tables num="2"><img id="000003" he="218" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0080"><tables num="3"><img id="000004" he="218" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0081"> First skin adhesive of comparative example CE-1 ~ 3 A pressure sensitive adhesive according to the composition shown in Table 3 was blended in the first adhesive extruder as described for the first skin adhesive Adh-1, except for the following. The adhesives of these comparative examples did not contain acrylic polymers, so non-acrylic polymers were injected into the second region of the extruder.</p><p num="0082"><tables num="4"><img id="000005" he="84" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0083"> 2nd skin adhesive 12.70% multimode asymmetric star block copolymer (PASBC), 53.10 (weight)% AP-1, 23.30% adhesive resin (Escores 1310LC), 3.80% adhesive resin (Superstar W115), 6.20 Described in First Skin Adhesive, except for the composition of% plasticizer (Santisizer 141), 0.26% antioxidant (Irganox 1010), and 0.25% UV absorber (Tinubin 328). The pressure sensitive adhesive was compounded in a 60 mm co-rotating twin-screw extruder (available from Berstorff) ("Second Adhesive Extruder") in the same manner as above.</p><p num="0084"> Double-sided foam tape sample The foam cores (FC1 to FC5) having the compositions shown in Table 4 were blended according to the following procedure. EVA (4900 CMB) colored black in the first area of a 90 mm co-rotating twin-screw extruder ("core extruder") (available from Berstorff (Hannover, Germany)) Injected dry. Both the acrylic polymers AP-2 and AP-3 were heated using a roll feeder extruder (available from Burstulf) and injected into the second region of the core extruder. DUALITE U010-185D Effervescent Microspheres with Acrylonitrile and Methacrylonitrile Shell Compositions Available from Henkel Corporation (Gulph Mills, PA), and Isopentane Cores Foaming microspheres) were injected into the ninth region of the core extruder.</p><p num="0085"><tables num="5"><img id="000006" he="62" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0086"> A three-layer coextruded tape sample was prepared by coextruding a first skin adhesive layer, a foam core layer as an intermediate layer, and a second skin adhesive layer. Examples 1 to 11 use typical adhesives (Adh-1 to Adh-11) according to an embodiment of the present disclosure. Reference Examples 1 to 3 use the adhesives CE-1 to CE-3 of the comparative example. The tape structure is shown in Table 5.</p><p num="0087"> The second skin adhesive was blended in the second adhesive extruder as described above and the outer layer of a three-layer multi-manifold film die obtained from Cloeren Inc. (Orange, Texas). I passed it. The foam core layer was blended in the core extrusion molding machine as described above and injected into the central layer of the 3-layer die. The first skin adhesive was blended in the first adhesive extruder as described above and injected into the outer layer of the three-layer die, opposite the second skin adhesive.</p><p num="0088"> Upon exiting the die, the co-extruded layer was cast onto a casting roll that was peel-coated with silicone. The roll was cooled with water at a temperature of about 12 ° C. The cooled extruded product was transferred from the casting roll to a 0.117 mm thick polyethylene stripped liner coated with silicone on both sides and moved to the end of the web transport line at the same rate as the casting roll. The first skin adhesive was in contact with the liner after migration, while the second skin adhesive was exposed to the open air. The liner had a unique peeling property that allowed the tape to be unwound after winding the liner without confusion. Peeling liners are well known in the art and any known peeling liner can be used. Typically, the release liner comprises a film or paper substrate coated with a release agent. Commercially available release liners include, but are not limited to, silicone-coated paper and silicone-coated films such as polyester films. Suitable peeling liners are also 3M Innovative. It is also disclosed in US Pat. Nos. 6,835,422, 6,805,933, 6,780,484, and 6,204,350, which are assigned to Properties Company).</p><p num="0089"> The foam core and both adhesive skins were crosslinked on the web using electron beam curing while being supported on the liner. The following two irradiation steps were used on the opposite side of the tape. The first skin adhesive was irradiated through a polyethylene liner, while the second skin adhesive was irradiated while exposed to the open air. The electron beam unit is a broadband curtain-type electron beam processor (PCT Engineered Systems, LLC) operated according to the acceleration voltage and dose conditions provided in Table 5. .) (Davenport, Iowa).</p><p num="0090"><tables num="6"><img id="000007" he="218" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0091"> Low of hardened adhesive tape according to the method described in Ford Motor Co.'s specification WSB-M3G138-B, "Breakaway and Continuous Peel Adhesion (BACP)". The adhesion of surface energy to automotive paints was tested. Tensile tests are performed by the MTS Model 1122 Tensile Tester (MTS Systems Corp.) with TestWorks 4 software programmed to calculate separation load values, average continuous stripping values and total energy. (Eden Prairie, Minnesota).</p><p num="0092"> The test surface was a steel panel painted with an automotive paint system, including base electrodeposition, a colored base coat, and a low surface energy carbamate crosslinked uncolored acrylic clear coat. The experimental tape was attached to the test clear coat. The surface energy of test surface 1 (Accu-dyne solution) was measured to be 33 dynes / cm, and the surface energy of test surface 2 was measured to be 32 dynes / cm.</p><p num="0093"> After applying the test tape to the test surface, the sample was humidity controlled before the test. First, the sample was humidity-controlled at room temperature for 3 days. Next, the sample was humidity-controlled at 38 ° C. and 100% relative humidity for 6 days. Four samples are tested for each tape and the average results are reported in Table 6. The failure modes (s) observed for each set of samples are also reported in Table 6.</p><p num="0094"><tables num="7"><img id="000008" he="39" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0095"><tables num="8"><img id="000009" he="218" wi="158" file="JP6338552B2_D0001.tif" img-format="tif" img-content="drawing" /></tables></p><p num="0096"> Various improvements and modifications of the present invention will be apparent to those skilled in the art without departing from the scope and gist of the present invention.<u style="single">A preferred embodiment of the present invention is as follows.</u><u style="single">[Appendix 1]</u><u style="single"> (A) 92-99.9 parts of block copolymer adhesive composition.</u><u style="single"> (i) With at least one rubbery block containing the first polymerization conjugated diene, its hydrogenated derivative, or a combination thereof.</u><u style="single"> (ii) A block copolymer adhesive composition comprising a first block copolymer (a), which comprises at least one glassy block containing a first polymerized monovinyl aromatic monomer, and a block copolymer adhesive composition.</u><u style="single"> (B) An acrylic adhesive composition containing 0.1 to less than 10 parts, optionally less than 9 copies, optionally less than 8 copies, optionally less than 5 copies, optionally less than 3 copies.</u><u style="single"> (i) Acrylic acid or methacrylic acid ester of a non-tertiary alkyl alcohol containing at least one 4 to 20 carbon atoms in 70 to 100 parts,</u><u style="single"> (ii) A pressure-sensitive adhesive composition containing 0 to 30 parts of a copolymer-strengthening monomer and an acrylic adhesive composition.</u><u style="single">[Appendix 2]</u><u style="single"> The first block copolymer has the formula Q</u>_{<u style="single">n</u>}<u style="single">-Y (during the ceremony,</u><u style="single"> (a) Q represents the arm of a multi-arm block copolymer, and each arm is independently expressed in the formula RG (in the formula,</u><u style="single"> (i) R represents a rubber-like block</u><u style="single"> (ii) G represents a glassy block)</u><u style="single"> (b) n represents the number of arms, an integer of at least 3</u><u style="single"> (c) The pressure-sensitive adhesive according to Appendix 1, which is a multi-arm block copolymer (where Y is a residue of a polyfunctional coupling agent).</u><u style="single">[Appendix 3]</u><u style="single"> A second block copolymer further comprising at least one rubbery block comprising a polymerized second conjugated diene, a hydrogenated derivative thereof, or a combination thereof, and at least one glassy block containing a second polymerized monovinyl aromatic monomer. Including, the pressure-sensitive adhesive described in Appendix 2.</u><u style="single">[Appendix 4]</u><u style="single"> The pressure-sensitive adhesive according to Appendix 3, wherein the second block copolymer is a linear block copolymer and optionally the linear block copolymer is a triblock copolymer.</u><u style="single">[Appendix 5]</u><u style="single"> The pressure sensitive according to Appendix 4, wherein the second block copolymer is a triblock copolymer selected from the group consisting of styrene-isoprene-styrene, styrene-butadiene-styrene, styrene-ethylene-butadiene-styrene, and combinations thereof. adhesive.</u><u style="single">[Appendix 6]</u><u style="single"> Appendix 1 ~, wherein the block copolymer adhesive composition is a first high Tg tackifier having a Tg of at least 60 ° C and further comprises a first high Tg tackifier compatible with at least one rubbery block. The pressure-sensitive adhesive according to any one of 5.</u><u style="single">[Appendix 7]</u><u style="single"> Addendum 6 to the Block Copolymer Adhesive Composition, further comprising a second high Tg tackifier having a Tg of at least 60 ° C and a second high Tg tackifier compatible with at least one glassy block. The pressure sensitive adhesive described.</u><u style="single">[Appendix 8]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 1 to 7, further comprising at least one component selected from the group consisting of a low Tg tackifier, a plasticizer, and a combination thereof.</u><u style="single">[Appendix 9]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 1 to 8, wherein the first conjugated diene is selected from the group consisting of isoprene, butadiene, ethylene butadiene copolymer, and a combination thereof.</u><u style="single">[Appendix 10]</u><u style="single"> The pressure-sensitive adhesive according to any one of Supplementary note 3 to 9, wherein the second conjugated diene is selected from the group consisting of isoprene, butadiene, ethylene butadiene copolymer, and a combination thereof.</u><u style="single">[Appendix 11]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 1 to 10, wherein the first monovinyl aromatic monomer is selected from the group consisting of styrene, a styrene compatible blend, and a combination thereof.</u><u style="single">[Appendix 12]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 3 to 11, wherein the second monovinyl aromatic monomer is selected from the group consisting of styrene, a styrene compatible blend, and a combination thereof.</u><u style="single">[Appendix 13]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 1 to 12, wherein the first block copolymer is a polymodal and asymmetric star-shaped block copolymer.</u><u style="single">[Appendix 14]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 2 to 13, wherein n is an integer of 3 or more and 5 or less, and n is optionally 4.</u><u style="single">[Appendix 15]</u><u style="single"> The pressure sensitivity according to any one of Appendix 1 to 14, wherein the acrylic acid or methacrylic acid ester is selected from the group consisting of isooctyl acrylate, 2-ethylhexyl acrylate, butyl acrylate, isobornyl acrylate, and combinations thereof. adhesive.</u><u style="single">[Appendix 16]</u><u style="single"> The copolymer-enhanced monomer is selected from the group consisting of acrylic acid, methacrylic acid, 2-carboxyethyl acrylate, N, N'dimethylacrylamide, N, N'diethylacrylamide, butylcarbamoylethylacrylate, and combinations thereof. The pressure-sensitive adhesive according to any one of 1 to 15.</u><u style="single">[Appendix 17]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 6 to 16, wherein the Tg of the first high Tg tackifier is at least 65 ° C.</u><u style="single">[Appendix 18]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 6 to 17, wherein the Tg of the second high Tg tackifier is at least 65 ° C.</u><u style="single">[Appendix 19]</u><u style="single"> The pressure-sensitive adhesion according to any one of Appendix 6 to 18, wherein the first high Tg tackifier has a softening point of at least about 115 ° C and optionally has a softening point of at least about 120 ° C. Agent.</u><u style="single">[Appendix 20]</u><u style="single"> The pressure-sensitive adhesion according to any one of Appendix 6 to 19, wherein the first high Tg tackifier has a softening point of at least about 115 ° C and optionally has a softening point of at least about 120 ° C. Agent.</u><u style="single">[Appendix 21]</u><u style="single"> The first high Tg tackifier is polymerized terpene, heterofunctional terpene, kumaron-inden resin, loginate ester, disproportionate loginate ester, hydrogenated loginic acid, C5 aliphatic resin, C9 hydrogenated aromatic resin, Selected from the group consisting of C5 / C9 aliphatic / aromatic resins, dicyclopentadiene resins, hydrogenated hydrocarbon resins from the C5 / C9 and dicyclopentadiene precursors, hydrogenated styrene monomer resins, and blends thereof. The pressure-sensitive adhesive according to any one of Appendix 6 to 20.</u><u style="single">[Appendix 22]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 8 to 21, wherein the low Tg tackifier is selected from the group consisting of polybutene resins.</u><u style="single">[Appendix 23]</u><u style="single"> The pressure-sensitive adhesive according to any one of Appendix 8 to 22, wherein the plasticizer is selected from the group consisting of naphthenic oil, liquid polybutene resin, polyisobutylene resin, and liquid isoprene polymer.</u><u style="single">[Appendix 24]</u><u style="single"> The pressure-sensitive adhesive according to any one of Items 1 to 23, wherein the pressure-sensitive adhesive is a hot-melt adhesive.</u><u style="single">[Appendix 25]</u><u style="single"> The pressure-sensitive adhesive according to any one of Items 1 to 23, wherein the pressure-sensitive adhesive is a solvent-based adhesive.</u><u style="single">[Appendix 26]</u><u style="single"> The ratio of multi-arm block copolymer to linear block copolymer is in the range of 1.5: 1 to 9: 1, optionally the ratio of multi-arm block copolymer to linear block copolymer is at least 1.85: 1, optionally multi-arm block. The pressure-sensitive adhesive according to any one of Appendix 4 to 25, wherein the ratio of the copolymer to the linear block copolymer is 5.7: 1 or less.</u><u style="single">[Appendix 27]</u><u style="single"> The total amount ratio of the high Tg tackifier to the block copolymer is 0.8: 1 to 1.25: 1, optionally the ratio of the total amount of the high Tg tackifier to the block copolymer is at least 0.85: 1, optionally high Tg adhesion. The pressure-sensitive adhesive according to any one of Appendix 7 to 26, wherein the ratio of the total amount of the imparting agent to the block copolymer is 1.15: 1 or less.</u><u style="single">[Appendix 28]</u><u style="single"> The ratio of the rubber-like block compatibility high Tg adhesive to the glass-like block compatibility high Tg adhesive is in the range of 1: 1 to 9: 1, and optionally the rubber block compatibility high Tg adhesive and glass. The ratio of the high Tg tackifier with high Tg adhesion to the state block is at least 1.25: 1, and the ratio of the high Tg tackifier with optional rubber block compatibility to the high Tg tackifier with high Tg adhesion to the glass block is 4: 1. The pressure-sensitive adhesive according to any one of Appendix 7 to 27, which is described below.</u><u style="single">[Appendix 29]</u><u style="single"> The ratio of the block copolymer and high Tg tackifier combination to the acrylate component is at least 8.3: 1, and optionally the ratio of the block copolymer and high Tg tackifier combination to the acrylate component is at least 12.5: 1. The pressure-sensitive adhesive according to any one of Appendix 7 to 28.</u><u style="single">[Appendix 30]</u><u style="single"> The ratio of the combination of block copolymer, high Tg tackifier and acrylate component to the liquid plasticizer is in the range of 32: 1 to 10: 1, optionally with the combination of block copolymer, high Tg tackifier and acrylate component. Additions 8 to 28, wherein the ratio to the liquid plasticizer is 25: 1 or less, and optionally the ratio of the combination of block copolymer, high Tg tackifier, and acrylate component to the liquid plasticizer is at least 12.5: 1. The pressure sensitive adhesive according to any one of the items.</u><u style="single">[Appendix 31]</u><u style="single"> A tape containing a foam backing material having a first main surface and a second main surface and a first adhesive skin adhering to the first main surface, wherein the first adhesive skin is any of Appendix 1 to 30. A tape containing the first pressure sensitive adhesive according to item 1.</u><u style="single">[Appendix 32]</u><u style="single"> The tape according to Appendix 31, further comprising a second adhesive skin that adheres to the second main surface.</u><u style="single">[Appendix 33]</u><u style="single"> The tape according to Appendix 32, wherein the first pressure-sensitive adhesive and the second pressure-sensitive adhesive are the same adhesive.</u><u style="single">[Appendix 34]</u><u style="single"> A foam backing material having a first main surface and a second main surface, a first adhesive skin containing a first pressure-sensitive adhesive adhering to the first main surface, and a second adhesive skin adhering to the second main surface. 2 A tape containing a second adhesive skin containing a pressure-sensitive adhesive, wherein the first pressure-sensitive adhesive and the second pressure-sensitive adhesive are independently described in any one of Appendix 1 to 30. Tape containing pressure sensitive adhesive.</u><u style="single">[Appendix 35]</u><u style="single"> The tape according to any one of Appendix 31 to 34, wherein the foam contains a thermoplastic foam.</u><u style="single">[Appendix 36]</u><u style="single"> The tape according to any one of Appendix 31 to 34, wherein the foam contains a thermosetting foam.</u><u style="single">[Appendix 37]</u><u style="single"> The tape according to any one of Appendix 31 to 34, wherein the foam contains an acrylic foam.</u><u style="single">[Appendix 38]</u><u style="single"> It includes a step of extruding the foam backing material and a step of coextruding the first pressure sensitive adhesive to form a first adhesive skin that is adhered to the first main surface of the foam backing material. The method for manufacturing a tape according to any one of Appendix 31 to 37.</u><u style="single">[Appendix 39]</u><u style="single"> 38. The method of Appendix 38, further comprising the step of extruding the second adhesive to form a second adhesive skin that is adhered to the second main surface of the foam backing.</u><u style="single">[Appendix 40]</u><u style="single"> 39. The method of Appendix 39, wherein the extrusion molding of the second adhesive comprises co-extruding the second adhesive with the first pressure sensitive adhesive and the foam backing material.</u><u style="single">[Appendix 41]</u><u style="single"> The method according to Supplementary Note 38 or 39, wherein the second adhesive is the pressure sensitive adhesive according to any one of Supplementary note 1 to 30.</u><u style="single">[Appendix 42]</u><u style="single"> Any one of Appendix 31 to 37, including a step of providing the foam backing material and a step of applying the first adhesive composition containing the first pressure-sensitive adhesive to the first surface of the foam backing material. The method for manufacturing a tape according to the section.</u><u style="single">[Appendix 43]</u><u style="single"> The method of Appendix 42, wherein the application of the first adhesive composition comprises lamination.</u><u style="single">[Appendix 44]</u><u style="single"> Note 43, wherein the application of the first adhesive composition comprises coating, optionally the method further comprises cross-linking of the first adhesive composition, and optionally the cross-linking of the first adhesive composition comprises radiation cross-linking. the method of.</u><u style="single">[Appendix 45]</u><u style="single"> The method according to any one of Supplementary note 42 to 44, wherein the first adhesive composition is a solvent-based adhesive, and the method further comprises drying the first adhesive composition.</u><u style="single">[Appendix 46]</u><u style="single"> The method according to any one of Appendix 42 to 45, further comprising the step of applying the second adhesive composition to the second surface of the foam.</u><u style="single">[Appendix 47]</u><u style="single"> The method according to Appendix 46, wherein the second adhesive composition comprises the pressure sensitive adhesive according to any one of Appendix 1-30.</u><u style="single">[Appendix 48]</u><u style="single"> The method according to Appendix 46 or 47, wherein the application of the second adhesive composition comprises lamination.</u><u style="single">[Appendix 49]</u><u style="single"> The application of the second adhesive composition comprises coating, optionally the method further comprises cross-linking of the second adhesive composition, and optionally the cross-linking of the second adhesive composition comprises radiation cross-linking, Appendix 46 or 47. The method described in.</u><u style="single">[Appendix 50]</u><u style="single"> The method according to any one of Appendix 46 to 49, wherein the second adhesive composition is a solvent-based adhesive, and the method further comprises drying the second adhesive composition.</u><u style="single">[Appendix 51]</u><u style="single"> A first substrate having a first surface and</u><u style="single"> A second substrate with a second surface and</u><u style="single"> An adhesive interface between the first surface of the first base material and the second surface of the second base material, which contains the pressure-sensitive adhesive according to any one of Appendix 1 to 30. Including, adhesive complex.</u><u style="single">[Appendix 52]</u><u style="single"> A first substrate having a first surface and</u><u style="single"> A second substrate with a second surface and</u><u style="single"> Adhesion, including an adhesive interface between the first surface of the first substrate and the second surface of the second substrate, which comprises the tape according to any one of Appendix 31-37. Complex.</u><u style="single">[Appendix 53]</u><u style="single"> The adhesive complex according to Appendix 51 or 52, wherein the first surface has a surface energy of less than 35 dynes / cm.</u></p>