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patch

A patch and adhesive technology, applied in the direction of adhesive, polyether adhesive, adhesive type, etc., to achieve the effect of excellent repeatability and high re-adhesive force

Active Publication Date: 2020-03-24
LION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is still room for improvement in the adhesive force (re-adhesion force) when used for repositioning the patch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The conditions of Example 1 are as follows.

[0054] The mixing amount of (A) component and (C) component (when the total amount of the composition is 100g)

[0055] (A) 4.8 g of partially neutralized polyacrylic acid (neutralization degree: 40 mol%)

[0056] (C) tartaric acid (valence: 2) 1g

[0057] (1) Acrylate unit and acrylic acid unit of component (A)

[0058] If the total of the acrylate units and the acrylic acid units in 4.8 g of the above partially neutralized polyacrylic acid is X, and the number of acrylate units is Y, then the following formula holds:

[0059] 72X+23Y=4.8

[0060] Y=0.4X

[0061] Here, solve the above formula, find X and Y, and get

[0062] X=0.0591···(I)

[0063] Y=0.0236···(II)

[0064] (2) Carboxyl group of component (C)

[0065] According to the above conditions

[0066] 1×2 / 150=0.0133···(III)

[0067] (3) Calculation of value

[0068] According to the above (I) to (III),

[0069] [(II)-(III)] / (I)

[0070] =(0.0236-0.0133) / ...

Embodiment 1～16、 comparative example 1～6

[0096] According to the proportions shown in Tables 1 to 4, each component was mixed using a Henschel mixer (manufactured by Nippon Coke Industry Co., Ltd. (Nippon Coke Industry Co., Ltd., model: FM 20C / I) to obtain an adhesive composition Then, use a spreading machine (manufactured by Ikeda Machinery Industry Co., Ltd., model: TC-340) on a non-woven fabric with a width of 30 cm (polyester non-woven fabric manufactured by Kurabo Textile Processing Co., Ltd.: weight per unit area of ​​non-woven fabric 90g / m 2 ), spread the adhesive composition obtained above uniformly to form an adhesive layer, and further cover the adhesive layer with a plastic film (surface layer, polyester film made by Unitiki Co., Ltd.: thickness 25 μm). The surface of the agent layer is obtained as a patch. Relative to the support body 140cm 2 , the spreading amount of the adhesive composition was 28.5 g. In addition, in order to prevent drying, put the obtained patch into the inner bag (paper 64g / m 2 ...

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Abstract

The invention provides a patch having excellent repeated adhesive ability. The patch includes a support body and an adhesive layer. The adhesive layer includes (A) polyacrylic acid and / or salt thereof, (B) poly alkylene oxide series water-absorbent resin, (C) an adhesive composition of organic acid selected from more than one of tartaric acid, malic acid, lactic acid and citric acid; the average mean molecular weight of the (A) is more than 3 millions, the hybrid-mass of the (A) and the (C) meets a relation that [acrylate units of the (A)-carboxyl of the (C)] / [ the acrylate units of the (A)+ acrylic acid units of the (A)] <=0.22; and the pH of the adhesive composition is 4-5.5, and the water content is more than 80 mass%.

Description

technical field [0001] The present invention relates to a patch having a cooling effect for use by sticking to a part of the body to be cooled, such as the forehead, and particularly relates to a patch having excellent repeatability. Background technique [0002] In the past, as a patch with a cooling effect for the purpose of countermeasures against summer heat, cooling sensation and lowering of body temperature during heat generation, a gel-like adhesive having a cooling effect formed on one side of a support such as a non-woven fabric has been sold. The patch of the mixture layer. Among these patches, in order to be able to use them more effectively and comfortably, many attempts have been made to improve the cooling effect, its durability, and adhesiveness (difficulty in peeling off), and to reduce stickiness and irritation during use and to improve the feeling of use. try. [0003] For example, Japanese Patent Application Laid-Open No. 2010-284519 (Patent Document 1) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J101/28C09J133/02C09J171/02C09J11/06C09J11/08C09J11/04A61F7/02
CPCA61F7/02A61F2007/0002A61F2007/0214A61F2007/0226C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J101/286C08L33/02C08L71/02C08K13/02C08K5/00C08K5/092C08K5/09C08K5/053
Inventor 矢野杰石川聪之
Owner LION CORP
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