Adhesive strip composite and use thereof

0001The invention relates to an adhesive film strip composite and its use, Namely, such a Velcro closure and an adhesive film strip is abstripbar by pulling in the direction of the bond plane.

0002Adhesive films, which are removable by pulling in the bond, are known and commercially available, such as "Power Strips" by Beiersdorf @ AG.

0003So describes <b>US 4,024,312</b> a self-adhesive tape with an extensible and elastic support of a block copolymer, in particular for applications in the medical field, where pain-free removal from the skin is desired is.

0004Further describes <b>DE 33 31 016 A1</b> an adhesive film for re Adhesive bonds which allows an adhesive bond produced therewith by Pulling on the adhesive film in the direction of the bond is releasable. With such Adhesive films can achieve high bond strengths and shear strengths and solve adhesive bonds again without further aids, comparable to opening a preserving jar, similar to where the rubber seal the grip out of the Sealing joint is pulled.

0005Further describes <b>DE 37 14 453 C1</b> a non-destructive manner of practice objects again removable practice explosive which reversibly with an adhesive film is attached.

0006Also <b>WO 92111333</b> describes, inter alia, adhesive films for corresponding Applications, where the adhesive films employed have a low elasticity in have high extension.

0007DE <b>42 22 849 C1</b> likewise describes a strip of adhesive film of this Art with a specially configured grip tab.

0008Finally, describe <b>DE 42 33 872 C2</b> and <b>WO 94121157 wiederablös</b>bare adhesive hooks which also equipped with such adhesive films and thus are removable.

0009More sheet strips of this type are in <b>WO 95/06691, DE 43 39 604 A1, DE 44 28 587 A1</b> and <b>DE 44 31 914 A1,</b> described, and a corresponding suspension in <b>DE 195 11 288 A1.</b>

0010The adhesive systems shown in the above-mentioned documents showed However, also a number of disadvantages:<ul><li>To detach the adhesive film from the joint, has a part same emerge in the form of a grip tab of this. The adhesive film is thus necessarily in bonding non-flexible objects not completely invisible, but the handle is visible, which optically disadvantageous may appear and, when using materials which under Light influence aging, can also lead to technical problems.</li><li>When gluing it can easily happen that the entire adhesive film, ie including handles, disappears in the bonded joint. Especially the laity this can happen when he a portion of such adhesive film not so placed on the edge of the substrate, that a grip tab protrudes, and then from the bonded joint projects. When releasing the bonding then good advice and a destruction of at least one substrate can be the result.</li><li>If tearing of the adhesive film on the detachment process and remains a wily Klebfolienteil completely in the glue line, so is a residue-free Separation of the bonded materials without destroying the bond partners mostly no longer possible cause which significant damage can.</li></ul>

0011The suspension described in DE 195 11 288 has disadvantages, by sticking only to firm, smooth as possible and, in particular planar substrates or substrates.

0012In WO-A-95/35056 describes how a velcro serves Objects, such as signs, from a base made of fabric or fasten knitted reversible.

0013So it remains an unsolved problem, such as valuable or such items, are to remain undamaged, in particular can not be drilled are reversible, residue-free detachable and without damage on uneven or are otherwise attach unfavorable substrates.

0014Accordingly, the invention relates to an adhesive film strip composite and its Use, as indicated in detail in the claims.

0015Concerning employed Velcro and adhesive film strips is made to the prior art.

0016The detachment of the bonded articles is this by stretching the achieved double-sided pressure sensitive adhesive tape. The loss of adhesion is occurring by reducing the tackiness of the PSA analog DE 33 31 016 or DE 42 22 849 favored, as well as by the reduction of Klebfoliendicke caused by the elongation of the adhesive film.

0017come When using adhesive film sections with an intermediate support in particular products of the type as described in WO 92111333 into consideration.

0018The energy capability of the non-adhesive areas for handles are diverse. You can, for example by inerting the PSA by way of non sticky varnish done. Other possibilities include the laminated application of thin film materials such as plastic films and papers.

0019As liner paper or release laminates are the customary release films and Release papers, eg siliconized release films / release papers, which usually be used as a good release-area media against PSAs.

0020Generally is to production, processing and handling of the particularly preferred adhesive films to DE 33 31 016, DE 42 22 849 and WO 92111333 referenced.

0021reversible In many respects can be inventively substrates connect, one being on the hook and loop fastener, the other on the or the adhesive film strip.

0022Advantageous applications are in particular those with uneven substrates, as in the automotive sector, such as the dashboard or side panels, about a cell phone. But other rounded objects, such as vases, blank balls, clothing and even the human or animal body thus reversibly and without damage paste.

0023It is advantageous also a version with two handles on a sheet strips, According to EP 747 027 A2.

0024Even other difficult substrates can be successfully and reversibly without damage glue and released again as fly screens on windows, Carpets on difficult surfaces, whereby such carpets suitable are already having a loop-back, so that only the hook-part a hook and loop fastener must be used.

0025In the following the invention will be explained with reference to drawings, without however wishing to restrict unnecessary. Show it:<dl tsize="7"><dt>Fig. 1:</dt><dd>a schematic side view of a composite of the invention, and</dd><dt>Fig. 2:</dt><dd>gem is a schematic side view of a composite. Fig. 1 bonded to substrates and pulled apart.</dd></dl>

0026Specifically, FIG. 1 shows an adhesive film strip composite 1 of a first Adhesive tape strips 2, which at its one adhesive side with a cover 3 is covered, while on its other adhesive side of a loop Velcro 4 so bonded that the rear side adjacent to the adhesive film strip 2 and the front side with its loops 5 with the hook 6 of a corresponding hook fastener tape 7 is hooked. This hook Velcro 7 again is with its back 8 adhered to one of Klebseiten a second adhesive film strip, wherein the other adhesive side is in turn covered with a cover. 9 The Adhesive tape strips 2 and 8 have at their ends with films 10/11 covered Regions which serve as handles 12/13.

0027In FIG. 2 is now shown as a composite 1 gem. FIG. 1, released from his Sealers 3/9, on the one hand to a substrate 14 and the other part to a substrate is glued 15, wherein the Velcro closure is opened, that is, the hook fastener tape 7 is detached from the loop Velcro tape 4, so that the loops 5 and the hooks 6 are exposed and the substrates 14 and 15 with the adhering thereto composite parts are free from one another, within the meaning of Doppelfoils A well connected again are. To the substrates 14 and 15, to free but of the composite part (to is advantageous to the composite as defined in Fig. 2 dissolved), the adhesive film strip blank 2 and 8 by pulling on the handles 12 and 13 towards the Arrows A and C, ie in the direction of the bond plane, without residue or damage Disconnect and 4 and 8 at least use the velcro again.