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Pressure-sensitive adhesive tape and production method therefor

A manufacturing method and tape technology, applied in the field of adhesive tape, can solve problems such as non-concentrated stress, weak rigidity, and thread shedding, and achieve the effect of comprehensively improving hand-tearability

Active Publication Date: 2019-07-16
TERAOKA SEISAKUSHO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason for this problem is: due to the weak rigidity of the dry edge, the stress is not concentrated when the tape is torn off, and the force deviates along the oblique direction, causing the most end silk thread to fall off
Furthermore, the problem of thread-off at the end of the tear is also likely to occur in cloth tapes that do not have a laminated layer

Method used

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  • Pressure-sensitive adhesive tape and production method therefor
  • Pressure-sensitive adhesive tape and production method therefor
  • Pressure-sensitive adhesive tape and production method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] Hereinafter, the present invention will be further described in detail through examples. However, the present invention is not limited to these Examples. In the description below, "part" means "part by mass".

[0055]

[0056] Polyethylene was laminated on one surface of a cloth base material made of rayon woven cloth to form a laminated layer. Further, a long-chain alkyl-based mold release agent was applied on the laminated layer (back surface treatment) to obtain a laminated base material with a thickness of 0.15 mm.

[0057] Using a pressure kneader, knead 100 parts of natural rubber, 150 parts of calcium carbonate, 100 parts of tackifier resin (manufactured by Zeon Co., Ltd., QUINTONE (registered trademark) R100), and 30 parts of process oil to obtain a solid adhesive composition . This solid adhesive composition was applied to the entire surface of the cloth substrate (the surface opposite to the surface on which the laminated layer was formed) using a calende...

Embodiment 2

[0065] The adhesive tape wound body of Production Example 2 was rewound, rewound while cutting both ends with a serrated knife, and warp cutting was performed with a cutter. The height between hills and valleys is set to 2 mm, and the distance between hills is set to 5 mm.

[0066]

[0067] The adhesive tape roll body of Production Example 1 was used without performing the warp cutting process.

[0068]

[0069] The adhesive tape wound body of manufacture example 2 was used without performing a warp cutting process.

Embodiment 3

[0071] Except having used the adhesive tape winding body of the manufacture example 3, it carried out similarly to Example 1, and implemented the warp cutting process by laser processing.

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Abstract

Disclosed are: pressure-sensitive adhesive tapes 3 and 4 in each of which a pressure-sensitive adhesive layer is formed on one surface or both surfaces of a fabric base material, and a warp cutting treatment is applied to one end or both ends in the width direction of the fabric base material; and a production method for the pressure-sensitive adhesive tapes 3 and 4, the method comprising a step for applying a warp cutting treatment to a pressure-sensitive adhesive tape 1 in which a pressure-sensitive adhesive layer is formed on one surface or both surfaces of a fabric base material. In the pressure-sensitive adhesive tapes 3 and 4, incisions 3a and serrated cut surfaces 4a are formed by the warp cutting treatment, respectively, and thereby thread shedding can be minimized at a cutting endportion when manually tearing the pressure-sensitive adhesive tapes 3 and 4.

Description

technical field [0001] The present invention relates to an adhesive tape having a cloth base material that is torn off by hand, and to a pressure-sensitive adhesive tape that suppresses thread slippage at the end of tearing, and a method for producing the same. Background technique [0002] Conventionally, studies have been made to improve the easiness (so-called "hand-tearability") when the adhesive tape is torn off by hand without using a cutting tool such as scissors. However, the research mainly concerns adhesive tapes using plastic films as substrates. [0003] For example, Patent Document 1 discloses a method of forming continuous holes at regular intervals in an adhesive tape using a plastic film as a base material. Patent Document 2 discloses a method of discontinuously providing through-holes or recesses in the vicinity of the inner side of the adhesive tape than the end edge. Patent Document 3 discloses a method of forming a pinhole-like break line in a zigzag sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/21C09J201/00
CPCC09J201/00
Inventor 大塚崇裕久保田启吾
Owner TERAOKA SEISAKUSHO