Adhesive tape and its manufacturing method

A technology of adhesive tape and adhesive sheet, which is applied in the direction of adhesive heating, adhesive method using foam adhesive, adhesive type, etc., which can solve the limitation of water vapor transmission rate, The adhesive tape has no problems such as air permeability and difficulty in expelling sweat, and achieves excellent water vapor transmission rate, increased water vapor transmission rate, and improved foaming efficiency.

Active Publication Date: 2021-03-12
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the general-purpose adhesive tape is used for medical applications, there are problems that the adhesive tape is not breathable and thus has a low water vapor transmission rate, it is difficult to discharge sweat when the adhesive tape is attached to the skin, and skin maceration
As an adhesive composition, an acrylic adhesive composition is often frequently used, but it is difficult for the composition itself to have 3,000 g / m 2 ·High water vapor transmission rate of one day or more
Therefore, when the adhesive tape is used for medical applications and attached to the skin for a long period of time, the adhesive tape has no air permeability and thus has a low water vapor transmission rate, and therefore, moisture etc. generated by the skin cannot be discharged, and skin maceration may occur
[0006] In order to solve the problem, an adhesive tape having a hole is manufactured by making an adhesive composition contain a resin and a foaming agent and foaming, but the manufacturing method has a limitation in improving the water vapor transmission rate

Method used

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  • Adhesive tape and its manufacturing method
  • Adhesive tape and its manufacturing method
  • Adhesive tape and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment approach

[0026] According to an exemplary embodiment of the present invention, the substrate may be formed of organic fiber or inorganic fiber material fabric, paper, or the like.

[0027] According to an exemplary embodiment of the present invention, the adhesive tape can secure a high water vapor transmission rate through a porous structure including holes.

[0028] According to an exemplary embodiment of the present invention, the porous structure may include a plurality of pores, and the plurality of pores may be classified into, for example, two forms of closed pores or open pores.

[0029] According to an exemplary embodiment of the present invention, the porous structure may be a structure including any one of closed cells and open cells, or a structure including both closed cells and open cells. A closed cell is a cell formed by a structure in which the wall surface of the cell is completely closed, and thus is not connected to other cells, also called a closed cell. An open c...

Embodiment approach

[0082] Hereinafter, the present invention will be described in detail with reference to Examples for specifically describing the present invention. However, the embodiments according to the present invention can be modified in various forms, and it should not be construed that the scope of the present invention is limited to the embodiments to be described below. The embodiments of this specification are provided to more fully explain the present invention to those skilled in the art.

Embodiment

[0084] Acrylic acid (AA), methyl (meth)acrylate (MMA), ethylhexyl acrylate (EHA), ethyl acrylate (EA), butyl acrylate (BA), water and poly(ethylene glycol) nonyl Copolymerize with tetraammonium phenylsulfate emulsifier to obtain acrylic resin with weight average molecular weight of 10,000,000g / mol. The contents of the various components are shown in [Table 1] below.

[0085] [Table 1]

[0086]

[0087] A water-based acrylic adhesive composition was prepared, which included 0.9 parts by weight of p,p'-oxybis(benzenesulfonyl hydrazide) as a blowing agent based on 100 parts by weight of acrylic resin, 1.2 parts by weight of N,N-dimethyllaurylamine oxide as a surfactant, and 35 parts by weight of zinc oxide based on 100 parts by weight of acrylic acid as a curing agent.

[0088] After the adhesive composition is applied to the release film formed by the PET material, it is carried out at the first temperature (T1), the second temperature (T2), the third temperature (T3) and t...

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Abstract

The present invention provides an adhesive tape comprising: a substrate; and an adhesive sheet provided on one surface of the substrate and comprising a water-based acrylic adhesive composition and a method for producing the same. wherein the adhesive sheet has a porous structure including pores, and wherein the adhesive tape has a water vapor transmission rate of 3,000 g / m under conditions of a temperature of 40°C and a relative humidity of 20% 2 ・Day or more and 5,000g / m 2 · days or less.

Description

technical field [0001] This specification claims priority and benefit from Korean Patent Application No. 10-2016-0021422 filed in the Korean Intellectual Property Office on February 23, 2016, the entire contents of which are incorporated herein by reference. [0002] The present invention relates to adhesive tapes and methods for their manufacture. Background technique [0003] When the adhesive tape is used in medical applications, the adhesive tape is used in the form of emergency adhesive tape, surgical tape, and the like. The adhesive tape includes a base material and an adhesive sheet formed on the base material, and adheres the adhesive sheet to the surface of the skin when used in medical applications. [0004] Universal adhesive tapes are manufactured by applying the adhesive composition to a base film. When the general-purpose adhesive tape is used for medical applications, there are problems that the adhesive tape is not breathable and thus has a low water vapor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/30C09J7/20C09J7/21
CPCC09J7/20C09J7/21C09J5/06C09J5/08C09J2400/24C09J2433/00C09J7/385C09J2301/00C09J2301/122C09J2203/00B65D5/708C09J125/14C09J133/08H01L21/6835
Inventor 韩祯仁崔源九金章谆崔兑伊梁芝娟金丹雅朴书玄
Owner LG CHEM LTD
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