Shrinkable bubble cushioning material and packaging method thereby

[Detailed Description of the Invention]

[Industrial Application] Shrink air bubbles in which a large invention makes the synthetic resin hollow body sheet which has many hollow sealing rooms come to spread a heat contraction synthetic resin film in one! 1 Collision material. It is related with the packaging method which carries out binding wrapper maintenance of the wrapped object using the shrink air-bubbles shock absorbing material. [Prior art] Although various kinds of things are conventionally adopted as a packaging material, stable maintenance of the wrapped object is carried out as a packaging material, the shock from the outside is borne, a fine sight is not spoiled, but it is required that a wrapped object can be viewed from the exterior by a case. It is also required to be easy to pack and to be hard to damage. The plastic sheet which has many convex parts is made to spread a flat synthetic resin film, and since there are insulation properties which can return to cushioning properties, the synthetic resin hollow body sheet (cellular shock absorbing material or the air back is called hereafter) which forms a hollow sealing room is adopted also as a packaging material.

Although the air bag was used as a packaging material like one or more problems which [invention tends to solve, the packing which touched the article closely since it was bulky as itself was difficult, and in order to summarize packing, it needed an excessive man day, such as further wrapping in materials, such as another string or a film tape, and binding. The present invention was made in view of the above situation! While providing the shrink air-bubbles shock absorbing material which it has l A crash and insulation properties, and has heat contraction nature and transparency, This shrink air-bubbles shock absorbing material is used as a packaging material, and that packaging method that can carry out close maintenance of the wrapped object safely certainly without requiring other materials and means easily is provided.

[The means for solving a problem and its operation] In order that this artificer may solve this problem, the 0 present invention which inquired wholeheartedly and completed the present invention forms the synthetic resin hollow body sheet which forms many convex parts, The wrapper seal of the wrapped object is carried out to the synthetic resin hollow body sheet with the shrink air-bubbles shock absorbing material which spreads a heat contraction synthetic resin film in one, and the shrink air-bubbles shock absorbing material, It is a packaging method by the shrink air-bubbles shock absorbing material which carries out time maintenance of this suitably into the hot wind of Suitable temperature, carries out close maintenance of the wrapped object by contraction of shrink air-bubbles shock absorbing material, and packs this. The synthetic resin hollow body sheet used for the present invention sticks a flat synthetic resin film at least on one side of the sheet obtained in the synthetic resin film by forming many convex parts by the other vacuum forming and conventional method by proper methods, such as heat adhesion or a dry lamination, and is manufactured. If the synthetic resin film used for this is a film which can be easily fabricated by vacuum forming etc., polyolefin system films, such as polyethylene and polypropylene in which the quality of the material is not in between, and EVA, a polyamide system film, a polyester system film, etc. will be used. In order that the fabricated convex part may not carry out heat modification by heating in use [ in subsequent - process ] etc., a thing without heat contraction nature or a very small thing is preferred, The synthetic resin hollow body sheet which may use what provided the thing which gave skillful stages for adhesiveness, such as corona treatment, the adhesives layer, or the primer layer in the attachment side and which is produced by doing in this way is laminated with a heat contraction film. As a heat contraction film, they are polyethylene, such as cross-linked polyethylene, LLDPE, and polypropylene. The heat contraction film consisting of polyolefin system heat contraction films, such as EVA, polyamide, polyvinyl chloride, polyester, etc. is used. As for a lamination, the heat adhesion by the heating temperature time of a grade when a shrink film does not cause contraction, or the dry lamination by adhesives is adopted. The method of making a glue film intervene and pasting up is also adopted. The partial adhesion like not only complete adhesion but punctiform and band-like may be sufficient as adhesion with a synthetic resin hollow body sheet and a heat contraction film, and, thereby, it makes contractility improve. It may be made to form 1 synthetic-resin hollow body sheet as above-mentioned flat synthetic resin film, using a heat contraction film directly, as shown in the example which carries out a postscript.

[Example] Hereinafter, the example of the present invention is described based on a drawing. As shown in Drawings 1 and 2, multi-a piece convex part 2 is formed in plastic sheets 1, such as 1, for example, polyethylene etc. Flat synthetic resin film 3 in which the forming rolls which have four copies of shape which correspond the synthetic resin film heated by Suitable temperature with convex part 2 carrying out vacuum Breathing of the fabrication of convex part 2, and forming it in them consists of polyethylene etc. as well as the opening side of common 0 plastic sheet 1 is spread, As for a means to spread 1 synthetic resin film 3 which forms sealing room 4 as well shown in Drawing 2 to synthetic resin See 1, what is depended on thermal melting arrival is general, synthetic resin hollow body sheet 5 which are formed [ like ] by carrying out or more [ it makes synthetic resin film 3 heated by Suitable temperature contact the opening side at the time of convex part fabrication of plastic sheet 1 it loads pressurization power with a pressurization roll etc. and it carries out inside thermal melting arrival ] zero is publicly known as described above -- shock absorbing material and thermal insulation, What is widely used as a packaging medium etc. is employable. Synthetic resin film 3 spread by plastic sheet l, of course can adopt not only the opening side but the thing made to spread to the top part side of convex part 2. Next, synthetic resin film 6 (it is called shrink film 6) of one more sheet is further spread by the backside of synthetic resin film 3. Although shrink film 6 is a film which carried out extension processing with special technique at the synthetic resin film of transparency, such as polypropylene (PP), and it is what has Bonded character about each of that characteristic, That by which version Sale is carried out by the brand name of polyolefin system heat contraction film (brand name Ginseng Radix Rubra Polyset)-U of 0 Hing Co., Ltd. size which is what has the characteristic which was extremely excellent in especially the rate of heat contraction has a rate of heat contraction of about 70% in 120 degreeC (inside of glycerin). when synthetic resin film 3 carries out thermal melting arrival of this shrink film 6 to plastic sheet l for spreading to synthetic resin film 3, this is made to contact and it is carried out by pressurizing and carrying out inside thermal melting arrival (while plastic sheet 3 is held at Suitable temperature state). Under the present circumstances, since shrink film 6 has heat contraction nature like the above, it is necessary to make it avoid heating the temperature at the time of spreading even to the temperature in which it carries out heat contraction greatly. Like the above, as it carries out and is shown in the 2nd fgJ, shrink air bag 7 is formed in one. Since shrink air bag 7 has a hollow sealing room (air room) like illustration, it is excellent in buffer nature and insulation properties. It has heat contraction nature as a whole from using shrink film 6. Since each plastic sheet (film) 1.3.6 has transparency, it will become transparent as a whole (of course, the Fascinate case should just spread an opaque plastic sheet for Transparent). Although shrink air bag 7 shown in Drawing 2 is a general target's shape most, another example is shown in Drawings 3 and 4. Shrink air bag 7A shown in Drawing 3 spreads shrink film 6A on convex part 2 of plastic sheet l, Shrink air bag 7B shown in Drawing 4 spreads shrink film 6A on convex part 2 of plastic sheet l, and also makes the back of synthetic resin film 3 spread shrink film 6. In the above example, adhesion with shrink film 6 and synthetic resin hollow body sheet 5 is good not only by complete adhesion but the partial adhesion like punctiform and band-like. Contractility can be improved by carrying out partial adhesion. As for adhesion, not only thermal melting arrival but each adhesion method, such as adhesives and film intervention for adhesion, is adopted. In 0 this example which is what shows shrink air bag 7C with another Drawing 5, shrink film 6B is directly adopted as a pack film of plastic sheet l. Although the temperature is below the temperature of heat shrinkage of the above-mentioned Beginning <shrink film 6B although adhesion with shrink film 6B and plastic sheet 1 is performed by thermal melting arrival, and it is necessary to make it the temperature in which thermal melting arrival is possible, it is checked that it is operation Running. Although the above example explained all only about shape further, of course, accumulating on a multilayer is also possible. Next, the packaging method which uses a shrink air bag as a packaging material is explained. it is shown in Drawing 6 -- as -- the above-mentioned shrink air bar -- shrink air bag Bag 8 (henceforth packaging bag 8) is formed using a globefish. It is desirable and the content volume of packaging bag 8 of hollow sealing room 4 turning and arranging an inner side in a bag like illustration, although formed of an ordinary heat seal means is [ packaging bag 8 ] Thermal acidw! A rate is expected and only quantity is suitably formed widely from wrapped object 9. Although packaging bag 8 which enclosed wrapped object 9 with - which carries out the heat seal of the opening and stops wrapped object 9 after insertion from the opening of packaging bag 8, next Like hot blast stove lO shown in Drawing 7 is carried out under Hanging, and To expose, hot wind temperature, and retention time take the capacity of wrapped object 9, etc. into consideration and are suitably selected under a hot wind, It is proved by holding about 10 seconds within 130degreeC thru/or a 150 degreeC hot wind in the case of the shrink air bag using the shrink film of LLDPE as one example that close maintenance of the wrapped object 9 is carried out with packaging bag 8. That is, if packaging bag 8 is suitably put to some extent to the above hot wind only time, shrink film 6.6A and the heat contraction of 6B will arise, the synthetic resin hollow body sheet 5 side will also be contracted in connection with this, and contraction change of the content volume will be carried out greatly as a whole. The state where heat contraction was carried out is shown, convex part 2 of plastic sheet 1 is welded by pressure to the surface of wrapped object 9, and Drawing 7 where hollow sealing room 4 is held and transparency is not spoiled, either, even if the whole carries out contraction change, of course can carry out close maintenance of this. For this reason, it is held in packaging bag 8 without backlash, and wrapped object 9 is existence of hollow sealing room 4! It excels in II nature, external Si, and -/Ri are borne, and safe protection of the wrapped object 9 is carried out. Insulation properties can be held. As a whole, since it is transparent, wrapped object 9 can be viewed from the exterior. What is necessary is just to put under a hot wind, after packing encloses wrapped object 9 with packaging bag 8, and it can perform packaging operation very easily. Of course, not only that in which the long direction object like illustration, etc. were ready but the shape of wrapped object 9 and the thing which it can apply to the thing of shape which has irregular unevenness, and is collectively done for the close maintenance of the thing of many Debt securities are Regret.

[Effect of the Invention] According to the 1 present invention, it has clearly an effect which is excellent in heat contraction nature, buffer nature, insulation properties, and transparency by the above explanation, and can achieve effect which can carry out close maintenance of the content safely and certainly easily at the time of packing.

[Brief Description of the Drawings]

Drawing 1 is a perspective view of present invention 1 example, and Drawings 2 are a sectional view of an example, and Drawing 3, An explanatory view for a perspective view for the sectional view of other examples of the present invention and Drawing 6 to illustrate the packaging method of an example in Drawing 4 and Drawing 5 and Drawing 7 to illustrate the packaging method of the same <example and Drawing 8 are sectional views for the type of packing to be shown. 1 ... a plastic sheet, and 2, phi and convex part, 3 ... synthetic resin film, 4 .. - hollow sealing room. 5, phi and a synthetic resin hollow body sheet, 6, and 6A. 6B -.. A shrink film, 7.7A. 7B -.. A shrink air bag, 8 .. It is - knob Bag, 9, a fist and a wrapped object (article packed), and 10 to watch shrink air... Eight furo.