JP2019043068A - Gelatinous elastomer - Google Patents

Abstract

To provide a gelatinous elastomer which can be easily fixed to an object.SOLUTION: The gelatinous elastomer 10 according to the present invention houses a gelatinous material 11 in a housing part 12 composed of a film. The housing part 12 comprises a container part 13 in which the gelatinous material 11 is filled and a lid part 15 which covers the gelatinous material 11 exposed from an opening 13A of the container part 13. And a second film 22 which composes the lid part 15 is constituted of a material having more rigidity than the first film 21 which composes the container part 13.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gel-like elastic body formed by accommodating a gel material in an accommodation portion.

  Patent Document 1 discloses a gel-like elastic body in which a gel material is covered with a soft coating layer (resin film) such as polyurethane.

JP 2009-20183 A (paragraphs [0029] and [0036] FIG. 1)

  In the gel-like elastic body of Patent Document 1, since the coating layer (resin film) is soft, when the gel-like elastic body is fixed to an object such as a plate or a wall with an adhesive or a double-sided tape, the coating layer is broken. And the gel-like elastic body is difficult to fix.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a gel-like elastic body which can be easily fixed to a partner.

  The invention according to claim 1 made to achieve the above object is a gel-like elastic body in which a gel material is housed in a housing portion made of a film, wherein the housing portion is a container filled with the gel material. A lid portion covering the gel material exposed from the opening of the container portion, and the lid portion is a second film made of a material having rigidity more than the first film constituting the container portion It is the gel-like elastic body comprised.

  The invention according to claim 2 is the gel-like elastic body according to claim 1, wherein the first film is made of a thermoplastic resin film, and the second film is a thermoplastic resin film, a metal-based film, It is a gel-like elastic body made of any of wood-based films.

  The invention according to claim 3 is the gel-like elastic body according to claim 2, wherein the gel material is a urethane gel and has an Asker C hardness of 30 or less.

  The invention according to claim 4 is the gel-like elastic body according to any one of claims 1 to 3, wherein the container portion is provided with an annular step portion for expanding the cross-sectional area on the opening side. It is a gel-like elastic body.

  The invention according to claim 5 is the gel-like elastic body according to any one of claims 1 to 4, wherein the container portion is provided with a flange portion projecting outward from an opening edge, the lid The portion is a gel-like elastic body fixed to the flange portion by sandwiching the gel material with the flange portion.

[Invention of Claims 1 to 3]
In the present invention, the second film constituting the lid covering the gel material exposed from the opening of the container is made of a material having rigidity more than the first film constituting the container filled with the gel material. ing. Therefore, by fixing the lid portion to the other member, breakage of the storage portion for storing the gel material is suppressed, and the gel elastic body can be easily fixed.

  The thermoplastic resin film constituting the first film is preferably a polyurethane (thermoplastic polyurethane) film, a polyolefin film or the like. As a polyurethane-type film, a polyether-type urethane film, a polyester-type urethane film, etc. are mentioned, As a polyolefin-type film, a polyethylene-type film, a polypropylene-type film, etc. are mentioned. Examples of the polyethylene-based film include a polyethylene film, and a film obtained by copolymerizing polyethylene and vinyl acetate or vinyl alcohol. In particular, when the gel-like elastic body is used for touching the skin like a puff, it is more preferable that the first film is a polyurethane-based film from the viewpoint of touch and skin slippage.

  The second film preferably has flexibility in addition to having rigidity more than the first film, and the second film is a thermoplastic resin film, a metal-based film, a wood-based film, etc. preferable.

  As a thermoplastic resin film which comprises a 2nd film, a polyester film, a polyolefin film, a polyvinyl chloride film, an acrylic film etc. are mentioned, for example. Examples of polyester films include polyethylene terephthalate (PET) films and polybutylene terephthalate (PBT) films. Examples of the polyolefin film include a polyethylene (PE) film, a film obtained by copolymerizing polyethylene and vinyl acetate and the like, and a polypropylene film (PP). Examples of polyvinyl chloride films include polyvinyl chloride (PVC) films, polyvinylidene chloride (PVDC) films, and the like. As an acryl-type film, an acrylic acid ester polymer film, a methacrylic acid ester polymer film, etc. are mentioned, for example.

  As a metal type film which comprises a 2nd film, stainless steel, aluminum, copper etc. are used, for example. In addition, the metal film which comprises a 2nd film may be a metal film which consists only of metals, and the film which laminated | stacked metal foil, a thermoplastic resin, etc. may be sufficient as it.

  Examples of the wood-based film constituting the second film include a cellulose film (cellophane), a sheet obtained by processing natural wood into a thin film, and the like.

  The second film is more rigid than the first film, has no releasability, is capable of adhering to the gel material, and has heat resistance such that deformation by heat does not occur when the gel composition is heat-cured. Any film may be used, and it is not limited to the specific film described above. In addition to having rigidity and flexibility, the second film is preferably excellent in processability and workability, more preferably the use of a thermoplastic resin film, PET film, PE film, PP film, It is particularly preferred to use a PVC film or the like.

  In addition, when the gel-like elastic body is used for touching the skin like a puff, the gel material is composed of urethane gel having an Asker C hardness of 30 or less measured in accordance with JIS K 7312: 1996. Asker C hardness is more preferably 10 or less.

[Invention of Claim 4]
According to the present invention, the gel-like elastic body can be easily grasped, and the workability when handling the gel-like elastic body, such as fixing the gel-like elastic body, is improved.

[Invention of Claim 5]
According to the present invention, since the outer edge portions of the container portion and the lid portion are fixed via the gel material, peeling of the lid portion is suppressed.

(A) A perspective view of the gel-like elastic body according to the first embodiment, (B) a side sectional view, (C) a side sectional view around a flange portion Side cross sectional view showing the manufacturing process of the gel-like elastic body Side cross sectional view showing the manufacturing process of the gel-like elastic body Side cross sectional view showing the manufacturing process of the gel-like elastic body (A) exploded perspective view of cosmetic container, (B) cross section of AA (A) Side sectional view of the gel-like elastic body according to the second embodiment, (B) Side sectional view around the flange portion

First Embodiment
As shown in FIGS. 1 (A) and 1 (B), the gel elastic body 10 of the present embodiment is formed by housing the gel material 11 in the housing portion 12 made of the first film. The accommodating part 12 consists of the container part 13 formed in bag shape, and the cover part 15 formed in flat form. Then, the gel material 11 is filled in the container portion 13, and the gel material 11 exposed from the opening 13 A of the container portion 13 is covered by the lid portion 15. The gel material 11 itself acts as an adhesive and adheres to both the container portion 13 and the lid portion 15.

  The container portion 13 is provided with an annular flange portion 13F protruding outward from the edge of the opening 13A. Further, the lid portion 15 is formed in the same size as the outer shape of the flange portion 13F. Then, the outer edge portion of the lid portion 15 is fixed to the flange portion 13F via the gel material 11 (FIG. 1 (C)), and peeling of the lid portion 15 is suppressed.

  In addition, in detail, the container portion 13 has a cylindrical body portion 13B and a dome-shaped head portion 13H that closes one end side of the body portion 13B. The opening on the other end side of the body portion 13 B constitutes an opening 13 A of the container portion 13. Further, the flange portion 13F is formed in an annular shape, and protrudes from the other end side of the body portion 13B over the entire circumferential direction.

  As the gel material 11, polyurethane gel, silicone gel, styrene gel or the like can be used. When the gel-like elastic body 10 is used as a puff-like application, the gel material 11 is composed of a urethane gel, and the Asker C hardness measured according to JIS K 7312: 1996 of the gel material 11 Is preferably 30 or less, and more preferably Asker C hardness is 10 or less. In addition, the gel material 11 is obtained by heat-hardening the gel composition 11S (refer FIG. 3 (A)) which consists of a mixture (specifically, two-component polyurethane liquid elastomer) containing a polyol and an isocyanate.

  The first film 21 constituting the container portion 13 of the housing portion 12 has stretchability (elongation in accordance with JIS K 7127: 1999 from the viewpoint of adhesion to the gel material 11 and followability to the vacuum forming female die 31. It is preferable to have a rate of 300% or more. Examples of the first film 21 include polyurethane-based films and polyolefin-based films that are thermoplastic resin films. As described later, since the gel material 11 is formed by heat curing the gel composition 11S (see FIG. 3A) in the container portion 13, the first film 21 is made of a thermoplastic resin film. If so, the first film 21 can easily follow the shape of the container portion 13, and the adhesion between the gel composition 11S and the first film 21 can be enhanced. In particular, when the gel-like elastic body 10 is used as a puff-like application, the first film 21 is a polyurethane-based film (polyether-based urethane film or polyester-based film) from the viewpoint of touch or skin slippage. It is preferable that it is a urethane film etc.).

  The thickness of the first film 21 is preferably 5 to 70 μm, and more preferably 10 to 50 μm in order to shorten the molding cycle. The thickness of the first film 21 is not particularly limited to the above-mentioned thickness as long as no tear or the like occurs during preparation of the gel-like elastic body 10 and it can follow the vacuum forming female die 31.

  The second film 22 constituting the lid 15 of the housing 12 is made of a material having rigidity more than that of the first film 21. The second film 22 preferably has flexibility in order to enhance the adhesion to the gel material 11. Examples of the second film 22 include thermoplastic resin films, metal-based films, wood-based films and the like, and the use of thermoplastic resin films is preferred for reasons of rigidity, flexibility, processability, workability, etc. It is more preferable to use a PET film as a polyester film and a PVC film as a polyvinyl chloride film. The thickness of the second film 22 is preferably 50 to 500 μm, and more preferably 70 to 200 μm. The thickness relationship between the first film 21 and the second film 22 is preferably: first film / second film = 1/1 to 1/50, 1 / 1.5 to 1/50 It is more preferable that it is / 20, and it is especially preferable that it is 1/2 to 1/10.

  Next, a method of manufacturing the gel elastic body 10 will be described. In order to manufacture the gel-like elastic body 10, first, the first film 21 is vacuum-formed to form the container portion 13. Specifically, the sheet-like first film 21 is held on the vacuum forming female die 31 previously heated to about 50 to 100 ° C. (FIG. 2A), and the first film 21 is softened. Then, the air is sucked into the cavity 32 (FIG. 2 (B)). Then, as shown in FIG. 2C, a part of the first film 21 is in close contact with the inner surface of the cavity 32 to form the container portion 13, and the remaining part of the first film 21 is vacuum. A flat portion 16 is formed in close contact with a portion of the molding female die 31 located outside the cavity 32.

  When the container portion 13 is formed, as shown in FIG. 3A, the gel composition 11S which is a raw material of the gel material 11 in the container portion 13 with the container portion 13 being disposed in the cavity 32. Fill. The injection amount of the gel composition 11S is larger than the volume of the container portion 13 (FIG. 3 (B)).

  When the gel composition 11S is filled in the container portion 13, as shown in FIG. 3C, the second film 22 is set on the flat portion 16 of the first film 21 and the gel composition 11S. Do. Then, the upper surface of the second film 22 is rubbed with a tool T such as a roller or a spatula to flatten the upper surface of the gel composition 11S, and the air from between the gel composition 11S and the second film 22 The gel composition 11S and the second film 22 are brought into close contact with each other. At this time, as shown in FIG. 4A, the excess gel composition 11S protrudes between the flat portion 16 of the first film 21 and the second film 22.

  When the second film 22 is set, as shown in FIG. 4B, the pressing die 35 is closed from above the second film 22 to heat and cure the gel composition 11S in the container portion 13. . Then, the gel material 11 is formed from the gel composition 11S, and the gel material 11 is filled in the container portion 13. At this time, the gel material 11 adheres to both the first film 21 and the second film 22, and a molded body 37 in which the gel material 11, the first film 21 and the second film 22 are integrated is obtained. . The excess gel composition 11S sandwiched between the flat portion 16 of the first film 21 and the second film 22 forms burrs 17 (FIG. 4C).

  When the gel material 11 is formed, the presser die 35 is opened and the molded body 37 is removed from the vacuum forming female die 31. Then, the first film 21 and the second film 22 disposed outside the container portion 13 in the molded body 37 are cut together with the burrs 17 with a Thomson blade, a cutter or the like (FIG. 4 (D)). At this time, a part of the burr 17 is left uncut, and the flange portion 13F is formed in the container portion 13. The gel-like elastic body 10 shown by FIG. 1 (A) and (B) is obtained by the above.

  By the way, in the conventional gel-like elastic body, if the soft coating layer (resin film) covering the gel material 11 is fixed to the counterpart or the gel material 11 is not covered with the coating layer, the gel material 11 itself Was fixed directly to the opponent. However, in the case where the coating layer is fixed to the partner, when the gel-like elastic body is fixed to the partner, there is a problem that the coating layer is easily broken due to the adhesive force of an adhesive or the like. In addition, when the gel material 11 itself is directly fixed to the partner, the adhesive force of the adhesive and the like is reduced by the plasticizer and the like contained in the gel composition 11S, and the partner of the gel-like elastic body is reduced. In any case, it was difficult to firmly fix the gel-like elastic body to the other.

  On the other hand, in the gel elastic body 10 of the present embodiment, since the second film 22 constituting the lid 15 is made of a material having rigidity more than the first film 21 constituting the container 13, the lid The strength of the part 15 can be increased. Thus, by fixing the gel-like elastic body 10 to the other object with the lid portion 15 as the adhesive surface, breakage of the housing portion 12 for housing the gel material 11 is suppressed, and the plasticizer and the like are exuded. Since a decrease in the adhesive force of the adhesive or the like can also be prevented, the gel elastic body 10 can be easily fixed to the counterpart.

  Furthermore, since the second film 22 constituting the lid 15 is made of a material having rigidity more than that of the first film 21, compared to the case where the lid 15 is formed of the first film 21, It is easy to form the lid 15 flat. This facilitates the fixing of the lid portion 15 of the gel elastic body 10 to a flat counterpart such as a plate or a wall.

  Moreover, when the conventional gel-like elastic body is manufactured by the same manufacturing method as this embodiment, since the coating layer is soft, the gel material shrinks after the gel material is heat-cured at the time of manufacturing the gel-like elastic body. If it is generated, the coating layer is pulled inward by the gel material, and there is a problem that wrinkles, blisters and the like are easily generated in the lid. In addition, when the gel elastic body is removed from the vacuum forming female mold, when the lid portion expands outward by the elastic force of the gel material, the outer edge portion of the lid portion is pulled to the center side, and the opening of the container portion The edge narrows, and the lid and the container are prone to wrinkles and blisters.

  However, in the gel-like elastic body 10 of the present embodiment, since the second film 22 constituting the lid 15 is made of a material having rigidity more than the first film 21, the lid 15 is the first film 21. The deformation of the lid 15 can be suppressed, the generation of wrinkles of the lid 15 can be suppressed, and the lid 15 can be easily kept flat. As a result, the gel composition 11S filled in the container portion 13 is firmly held by the lid portion 15, so that the gel elastic body 10 is not easily deformed, and the gel elastic body 10 of the target shape is easily made. It becomes possible to manufacture.

  Next, a specific use example of the gel elastic body 10 will be shown. The cosmetic container 60 using the gel-like elastic body 10 as an impact-absorbing material is shown by FIG. 5 (A) and (B). The cosmetic container 60 includes a container body 61 and a lid 62 rotatably attached to the container body 61. The container body 61 is formed so that the first concave portion 63 and the second concave portion 64 are arranged side by side. In the first recess 63, a middle plate 65 for containing a cosmetic such as powder, foundation, cheek, eye shadow, etc. is stored, and in the second recess 64, an applicator M such as a puff or a brush is stored. The gel-like elastic body 10 is interposed between the bottom surface of the first recess 63 and the middle plate 65 to suppress the movement of the middle plate 65 in the vertical and horizontal directions. Also, even if the cosmetic container 60 falls, the gel elastic body 10 absorbs the impact of the fall, so the impact on the inner plate 65 can be reduced, and damage to the cosmetic etc. filled in the inner plate 65 can be reduced. Can be reduced. In the example of FIG. 5 (A), the first recess 63 and the inner plate 65 are formed in a rectangular shape in plan view, and the gel elastic body 10 is disposed at each corner of the bottom of the first recess 63. . In addition, the gel-like elastic body 10 may be used as an impact-absorbing material other than the cosmetic container, and for example, the gel-like elastic body 10 is disposed at the bottom of a box for packing a precision machine, a site where a door, a drawer or the like abuts. It may be used as a shock absorber.

Second Embodiment
As shown in FIG. 6A, in the gel-like elastic body 10V of the present embodiment, the shape of the container portion 13 is different from that of the gel-like elastic body 10 of the first embodiment. Specifically, at the end of the container portion 13 on the side closer to the opening 13A, an annular step portion 14 is provided which widens the cross-sectional area on the opening 13A side. Then, in the container portion 13, the portion closer to the opening 13A than the annular step portion 14 constitutes the large diameter portion 13C, and the portion farther from the opening 13A than the annular step portion 14 constitutes the small diameter portion 13D. ing.

  As shown in FIG. 6B, in the gel elastic body 10V of the present embodiment, the flange portion 13F protrudes outward from the large diameter portion 13C of the container portion 13. As a result, the gel material 11 is scraped between the annular step portion 14 and the lid portion 15 and the burr portion 18 sandwiched between the flange portion 13F and the lid portion 15 (FIG. 6 (C And).

  According to the gel elastic body 10V of the present embodiment, when the container portion 13 includes the annular step portion 14, the worker can easily grasp the gel elastic body 10V. As a result, the workability at the time of handling the gel-like elastic body 10V, such as fixing the gel-like elastic body 10V, is improved. Further, since the area of the lid portion 15 is increased, the gel elastic body 10V can be firmly fixed to the partner.

[Other embodiments]
The present invention is not limited to the above-described embodiment, and, for example, the embodiments described below are also included in the technical scope of the present invention, and various other variations are possible without departing from the scope of the invention. It can be changed and implemented.

  (1) Using gel-like elastic bodies 10 and 10V for puffs for liquid foundation, wedge gel for protecting a part of the body, mattress gel to be put under the body, gel mat of LED light treatment device, etc. It is also good.

  (2) The lid portion 15 of the gel elastic body 10, 10 V may not be flat. For example, asperities may be formed on the lid 15, the gel-like elastic bodies 10 and 10V may be spherical, and the lid 15 may be dome-like, and the gel-like elastic bodies 10 and 10V May be teardrop shaped, and the lid 15 may be conical (conical, polygonal pyramid, etc.).

Reference Signs List 10, 10 V gel-like elastic body 11 gel material 12 storage portion 13 container portion 15 lid portion 21 first film 22 second film

Claims (5)

In the gel-like elastic body which accommodates a gel material in the accommodating part comprised by the film,
The housing portion includes a container portion filled with the gel material, and a lid portion covering the gel material exposed from the opening of the container portion.
The gel-like elastic body, wherein the lid portion is formed of a second film made of a material having rigidity more than the first film constituting the container portion. In the gel-like elastic body according to claim 1,
The first film is made of a thermoplastic resin film,
The said 2nd film is a gel-like elastic body comprised with either a thermoplastic resin film, a metal type film, and a wood type film. In the gel-like elastic body according to claim 2,
The gel material is a gel-like elastic body composed of urethane gel and having an Asker C hardness of 30 or less. The gel elastic body according to any one of claims 1 to 3.
The gel-like elastic body is provided in the said container part with the cyclic | annular level | step-difference part which extends the cross-sectional area by the side of opening. The gel elastic body according to any one of claims 1 to 4
The container portion is provided with a flange portion protruding outward from the opening edge,
The gel-like elastic body fixed to the flange by sandwiching the gel material between the lid and the flange.

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