JP3136494U - Elastic gel structure and pressure-sensitive adhesive sheet using the same - Google Patents

Abstract

An elastic gel structure that is excellent in flexibility, workability, use below freezing point, and the like and that can be easily peeled off, and a pressure-sensitive adhesive sheet using the elastic gel structure.
An elastic gel structure is applied to a flat nonwoven fabric having a thickness of 70 μm, one surface of the nonwoven fabric, a thermoplastic elastomer having a thickness of, for example, 230 μm, and the nonwoven fabric. For example, the adhesive part 3 mainly composed of an acrylic pressure-sensitive adhesive 31 is applied to the other surface 112 of the thermoplastic elastomer 21 and the release sheet 4 is attached to the surface of the thermoplastic elastomer 21 opposite to the nonwoven fabric 11. In addition, the surface of the elastic gel structure 10 opposite to the non-woven fabric 11 of the adhesive portion 3 mainly composed of the acrylic pressure-sensitive adhesive 31 is attached to both surfaces of the polypropylene plate 51, respectively. It was set to 20.
[Selection] Figure 2

Description

  The present invention relates to, for example, an elastic gel structure that is attached to a metal surface, a woodwork surface, a synthetic resin surface, and the like to prevent slipping and temporary fixation of these articles and a pressure-sensitive adhesive sheet using the elastic gel structure. The present invention relates to an elastic gel structure that is excellent in properties, use below freezing point, and the like and that can be easily peeled off, and an adhesive sheet using the same.

  In general, the adhesive tape is widely used as a tool for bonding and fixing articles such as metal, woodwork, and synthetic resin. While it can be applied immediately, it is excellent in convenience, while the tape tears in the middle when it is peeled off, and the problem of peelability has been pointed out, such as the adhesive that forms the adhesive surface remains on the attached item .

  The inventors of the present application have conducted extensive research in view of the above problems, and as a result, the elastic gel has excellent cohesive strength, flexibility, workability, and adhesiveness below freezing point due to its physical properties, and is easy to peel off from the article. I found out that

  Therefore, the present invention provides an elastic gel structure that is excellent in flexibility, workability, use below freezing point, and the like, and can be easily peeled off from an article by adopting an elastic gel on the adhesive surface. It aims at providing the adhesive sheet using this.

  In order to achieve the above object, an elastic gel structure according to the present invention includes a planar base material portion, an elastic gel portion applied to one surface of the base material portion, and the base of the elastic gel portion. It has a release sheet stuck on the surface opposite to the material part, and an adhesive part applied to the other surface of the base part.

  And it is preferable to make the thickness of the elastic gel part in the said elastic gel structure into the range from 1 micrometer to 1 cm.

  Moreover, the pressure-sensitive adhesive sheet according to the present invention is characterized in that an adhesive part in the elastic gel structure is attached to at least one surface of the sheet.

  And it is preferable to cut out a part of elastic gel structure in the said adhesive sheet so that a sheet | seat can be seen.

  Since the elastic gel structure according to the present invention employs an elastic gel portion on the adhesive surface with the article, it is excellent in flexibility, workability, use below freezing point, etc., and facilitates peeling from the article. it can. In addition, since the release sheet is attached to the surface of the elastic gel part that is the adhesive surface opposite to the base material part, the elastic gel part can be exposed only during use, and the excellent properties of the elastic gel part can be obtained. It can be maintained for a long period of time, and the inconvenience that the elastic gel structures adhere to each other in a state where the elastic gel structures are wound can be solved during carrying.

  Furthermore, since the thickness of the elastic gel portion in the elastic gel structure is in the range of 1 μm to 1 cm, the slip of the article is surely prevented while having an appropriate thickness to adhere the elastic gel structure to the article. Can be temporarily fixed.

  The pressure-sensitive adhesive sheet according to the present invention provides a pressure-sensitive adhesive sheet that takes advantage of the characteristics (effects) of the elastic gel structure because the adhesive portion of the elastic gel structure is attached to at least one surface of the sheet. can do. And since a part of the elastic gel structure was cut out so that the sheet could be seen, the release sheet was affixed to the surface of the elastic gel structure opposite to the base material portion of the elastic gel structure at the time of use It becomes easy to peel off, and convenience can be improved.

  That is, the present invention has an appropriate thickness for adhering to an article, and can reliably prevent the article from slipping, temporarily fixing, etc., and is excellent in flexibility, workability, use below freezing point, etc. In addition, it is possible to provide an elastic gel structure having an adhesive surface with an elastic gel portion that can be easily peeled off, and the adhesive sheet taking advantage of the characteristics (effects) of this elastic gel structure is convenient for use. Can be provided.

Hereinafter, embodiments of an elastic gel structure and an adhesive sheet according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic cross-sectional view of an elastic gel structure according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of an adhesive tape according to an embodiment of the present invention. FIG. 3 is a plan view showing a pressure-sensitive adhesive tape according to another embodiment of the present invention, in which a part of the elastic gel structure is cut out so that a sheet as a component can be seen.

  As shown in FIG. 1, the elastic gel structure 10 according to the present invention has, for example, a non-woven fabric 11 having a thickness of 70 μm and a surface 111 of the non-woven fabric 11 having a thickness of 1 μm to 1 cm. As the elastic gel part 2 applied with a thickness up to, for example, a thermoplastic elastomer 21 having a thickness of 230 μm, and as the adhesive part 3 applied to the other surface 112 of the nonwoven fabric 11, for example, acrylic It has the adhesive which has the system adhesive 31 as a main component. In particular, the release sheet 4 is attached to the surface of the thermoplastic elastomer 21 opposite to the nonwoven fabric 11.

  As shown in FIG. 2, the pressure-sensitive adhesive sheet 20 according to the present invention has the acrylic pressure-sensitive adhesive 31 in the elastic gel structure 10 on each side of a polypropylene plate 51 having a thickness of 1 mm, for example, as the sheet 5. The surface opposite to the nonwoven fabric 11 of the adhesive part 3 as a main component is pasted.

  Here, in addition to the nonwoven fabric 11, the base material portion 1 is a flat and lightweight material such as a plastic film or paper, and has good adhesion to the elastic gel portion 2 or the adhesive portion 3. Can be employed as appropriate. The elastic gel part 2 may be made of any material having excellent physical properties such as flexibility, workability, use below freezing point, and the like that can be easily peeled off. In addition to the thermoplastic elastomer 21, urethane rubber, silicone rubber, etc. Can be adopted. As the main component of the adhesive part 3, in addition to the acrylic pressure-sensitive adhesive 31, a silicone pressure-sensitive adhesive, a urethane pressure-sensitive adhesive, a thermoplastic elastomer, and the like can be appropriately employed.

In addition, the sheet 5 attached to the other surface of the base member 1 to which the adhesive part 3 is applied is a material that does not tear the elastic gel structure 10 when the elastic gel structure 10 is peeled off. In addition to the polypropylene plate 51, resin, paper, metal, or the like can be used as appropriate. Note that the thickness of the sheet 5 is preferably in the range of 1 μm to 2 cm because it takes into consideration the use during temporary fixing between articles.
In the release sheet 4, the elastic gel part 2 is exposed only at the time of use, so that the peelability from the elastic gel part 2 is good, and the excellent characteristics of the elastic gel part 2 can be sustained over a long period of time. In addition, the material is not particularly limited as long as it is a material that can eliminate the inconvenience that the elastic gel structures 10 adhere to each other in a state where the elastic gel structure 10 is wound. The release sheet that is being used can be applied.

  The thickness of the elastic gel 2 is preferably in the range of 1 μm to 1 cm, and can be adjusted as appropriate. In particular, a thickness in the range of 30 μm to 1 cm is more preferable from the viewpoint of reliably adhering to an article while having an appropriate thickness for adhering to the article. However, if the thickness is less than 1 μm, it is not preferable because it cannot be ensured that the article is securely adhered, and if the thickness is more than 1 cm, the elastic gel structure 10 such as temporary fixing between articles in a narrow space is preferable. This is not preferable because it may be difficult to meet the demand for thinness.

Example 1
Hereinafter, the elastic gel structure 10 which concerns on this invention, and the manufacturing method of the adhesive sheet 20 using the same are demonstrated.

  First, styrene-ethylene / butylene-styrene block copolymer (styrene / rubber weight ratio = 17/83, weight average molecular weight by GPC = 133000) and the weight of this styrene-ethylene / butylene-styrene block copolymer (100% by weight) 30% by weight of hydrogenated petroleum resin (manufactured by Maruzen Petrochemical Co., Ltd., trade name: Marcaretz H-505) and paraffinic oil (trade name: Samper 150, produced by Nippon San Oil Co., Ltd.) 250% by weight and an anti-aging agent (product name: Irganox 1010, manufactured by Ciba Specialty Chemicals Co., Ltd., 1% by weight) is kneaded with a composition comprising, for example, elastic gel part 2, A thermoplastic elastomer 21 having a thickness of 230 μm is produced. Further, the produced thermoplastic elastomer 21 is applied on the one surface 111 of the nonwoven fabric 11 having a thickness of 70 μm, for example, as the base material portion 1, for example, to produce an elastic gel structure primordial having a thickness of 300 μm. .

  Next, an acrylic pressure-sensitive adhesive (manufactured by Nippon Synthetic Chemical Industry Co., Ltd., trade name: Cooponir 5836) 31 as the adhesive part 3 is used as a reference (100% by weight) based on the weight of the acrylic pressure-sensitive adhesive 31. The above-mentioned elastic gel structure is prepared by applying an adhesive containing 2% by weight of an isocyanate-based crosslinking agent (trade name: Coronate L55E, manufactured by Nippon Polyurethane Industry Co., Ltd.) to a silicone release paper, for example, at a thickness of 40 μm. Transfer to the other surface 112 of the non-woven fabric 11 in the base, and further paste the release sheet 4 on the surface of the elastic gel structure base on the side opposite to the non-woven fabric 11 coated with the thermoplastic elastomer 21, The elastic gel structure 10 according to the present invention is produced.

  And, for example, the opposite side of the nonwoven fabric 11 of the adhesive part 3 mainly composed of the acrylic pressure-sensitive adhesive 31 in the produced elastic gel structure 10 on each side of the polypropylene plate 51 having a thickness of 1 mm as the sheet 5. If the surface is affixed, the adhesive sheet 20 according to the present invention is completed.

  Then, the elastic gel structure 10 according to the present invention has an adhesive surface with the article as the elastic gel portion 2, for example, a thermoplastic elastomer 21, so that it is excellent in flexibility, workability, use below freezing point, etc. Moreover, peeling from the article is easy. Furthermore, the pressure-sensitive adhesive sheet 20 according to the present invention is an adhesive part mainly composed of an acrylic pressure-sensitive adhesive 31 in the elastic gel structure 10 according to the present invention, for example, on both surfaces of a polypropylene plate 51 as the sheet 5. Since the surface opposite to the nonwoven fabric 11 of 3 is affixed, it can be set as the adhesive sheet which utilized the characteristic (effect) of the elastic gel structure 10. FIG.

In addition, the result of the performance test of the adhesive sheet 20 which concerns on this invention below is shown.
In the performance test, as shown in Table 1, weights (diameter 26.10 mm) on various test plates (10 cm long × 10 cm wide square) including an adhesive sheet 20, a crosslinked natural rubber (hereinafter abbreviated as NR) plate, and the like. 4 cm, 7.0 g, and a pressure per unit area of 0.0128 g / cm ² ), and the test plate was gradually inclined to measure the angle α ° at which the weight starts to slide. As test plates to be compared, commercially available crosslinked NR plates, high-hardness NR plates, non-slip processed (wrinkled) NR plates, chloroprene rubber (CR) sponge plates, silicone rubber plates, and acrylic plates were used. The test temperatures are 23 ° C. and 40 ° C. below freezing point, respectively. Further, the angle α ° at which the test plate is inclined is 0 to 90 °. The immobility described in Table 1 means that the weight did not start to slip even at the maximum angle of 90 ° where the test plate was tilted.

  Thus, it has been found that the pressure-sensitive adhesive sheet 20 according to the present invention is particularly excellent in terms of pressure-sensitive adhesiveness (flexibility) and use below freezing point.

  As described above, the present invention is excellent in flexibility, workability, use below freezing point, etc., can be easily peeled off, and has an appropriate thickness for adhering to an article. An elastic gel structure 10 having, for example, a thermoplastic elastomer 21 as an adhesive surface can be provided as the elastic gel portion 2 capable of preventing slipping or temporary fixing of an article. Thus, the pressure-sensitive adhesive sheet 20 that makes the best use of the above features can be provided.

(Example 2)
Here, as shown in FIG. 3, the pressure-sensitive adhesive sheet 20 according to the present invention is configured by cutting out a part 100 of the elastic gel structure 10 according to the present invention in advance so that the polypropylene plate 51 as the sheet 5 can be seen. It is desirable to do. If it does so, since it becomes easy to peel the release sheet 4 in the elastic gel structure 10 at the time of use, the convenience of the adhesive sheet 20 improves.

  As mentioned above, although embodiment of this invention was explained in full detail, unless this invention deviates from the matter described in the claim, it does not limit to the said embodiment, but performs various design changes. It is possible. For example, in the above-described embodiment, the pressure-sensitive adhesive sheet in which the elastic gel structure according to the present invention is pasted on both surfaces of the sheet has been illustrated and described. However, the elastic gel structure itself is flexible and workable. It can be used as a pressure-sensitive adhesive tape that is excellent in use below freezing point and can be easily peeled off from the article. Further, even the pressure-sensitive adhesive sheet with the elastic gel structure attached only to one side of the sheet can obtain the effect of the pressure-sensitive adhesive sheet according to the present invention, that is, even in such an embodiment, It is possible to provide a pressure-sensitive adhesive sheet that makes use of the characteristics of an elastic gel structure that is excellent in flexibility, workability, use below freezing point, and the like and that can be easily peeled off from an article.

It is a schematic sectional drawing of the elastic gel structure which concerns on one Embodiment of this invention. It is a schematic sectional drawing of the adhesive tape which concerns on one Embodiment of this invention. It is an adhesive tape which concerns on other embodiment of this invention, Comprising: It is a top view which shows the state which notched so that a sheet | seat could see a part of elastic gel structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base material part 11 Nonwoven fabric 111 One surface of nonwoven fabric 112 The other surface of nonwoven fabric 2 Elastic gel part 21 Thermoplastic elastomer 3 Adhesive part 31 Acrylic adhesive 4 Release sheet 5 Sheet 51 Polypropylene board 10 Elastic gel structure 100 Part of elastic gel structure (notched part)
20 Adhesive sheet

Claims (4)

A planar substrate portion;
An elastic gel portion applied to one surface of the substrate portion;
A release sheet to be attached to the surface of the elastic gel portion opposite to the base material portion,
An adhesive part applied to the other surface of the base part;
An elastic gel structure characterized by comprising: The elastic gel structure according to claim 1,
The thickness of the elastic gel part was in the range from 1 μm to 1 cm,
An elastic gel structure characterized by that. The adhesive part in the elastic gel structure according to claim 1 or 2 is attached to at least one surface of the sheet.
A pressure-sensitive adhesive sheet. In the pressure-sensitive adhesive sheet according to claim 3,
A part of the elastic gel structure was cut out so that the sheet could be seen,
A pressure-sensitive adhesive sheet.

Images