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Double-sided black tape

A black, double-sided technology, used in adhesives, films/sheets without carriers, identification devices, etc., to solve problems such as water resistance decline, achieve full light curing, inhibit light diffusion, good water resistance and impact resistance Effect

Active Publication Date: 2020-03-10
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since this double-sided tape has the disadvantage that some of the cells of the foam substrate used are continuous cells, there is a problem that the waterproofness is lowered.

Method used

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  • Double-sided black tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] (preparation of slurry)

[0111] In the polymerization reactor with light-shielding device, charge 90 mass parts of 2-ethylhexyl acrylate and 10 mass parts of acrylic acid, further, add 0.015 mass parts of 2-hydroxyl-2- Methyl-1-phenylpropan-1-one (Darocure 1173, BASF Japan Co., Ltd.), was allowed to react while stirring for prepolymerization until the viscosity of the reaction mixture was 1000 cps.

[0112] [Table 1]

[0113] Element parts by mass 2-Ethylhexyl Acrylate 90 acrylic acid 10 Darocure1173 0.015

[0114] (Production of adhesive film without hollow particles)

[0115] With respect to 80 parts by mass of the above-mentioned slurry solution, 20 parts by mass of 2-ethylhexyl acrylate, 0.3 parts by mass of 2-hydroxy-2-methyl-1-phenylpropane- 1-ketone (Darocure1173, BASF Japan Co., Ltd.), 0.2 parts by mass of hydroxypivalic acid neopentyl glycol diacrylate (KAYARADMANDA, Nippon Kayaku Co., Ltd.) as an acrylic crosslinking agent,...

Embodiment 2

[0131] Tape samples were produced in the same manner as in Example 1 except that Irgacure OXE02 was used instead of Irgacure OXE01 in Table 4 of Example 1.

Embodiment 3

[0133] In addition to adding 2.5 parts by mass of polyurethane solid particles (Art Pearl C-800, produced by Negami Industry Co., Ltd.) of kneading carbon black in the adhesive composition containing black hollow particles of embodiment 1, it is the same as embodiment 1 Manufactured with samples. The content of the hollow particles in the hollow particle-containing adhesive layer is 1 to 2% by volume.

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Abstract

This double-sided black adhesive tape having a hollow particle-containing adhesive agent layer is characterised in that the surfaces of the hollow particles are subjected to black pigment adhesion processing.

Description

technical field [0001] The present invention relates to a double-sided black tape that can be preferably used when affixing a transparent protective front panel to an image display module of a portable information terminal such as a smartphone. Background technique [0002] A portable information terminal has a structure in which an image display module including a housing and a transparent front panel such as a glass plate or an acrylic plate are pasted together with a double-sided tape disposed on the outer peripheries facing each other between the image display module and the front panel. Here, such a double-sided tape is required to exhibit good impact resistance. Therefore, a double-sided tape in which an adhesive layer obtained by laminating a photocurable acrylic adhesive composition on both sides of a foam substrate is proposed as a double-sided tape in consideration of impact resistance (Patent Document 1 ). However, since this double-sided tape has a disadvantage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/10C09J11/04C09J133/00C09J201/00G09F9/00
Inventor 阿部智幸
Owner DEXERIALS CORP
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