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Adhesive tape and its manufacturing method

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: 2022-01-04
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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  • Adhesive tape and its manufacturing method
  • Adhesive tape and its manufacturing method
  • Adhesive tape and its manufacturing method

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

The present invention discloses adhesive tapes 3 and 4 and a manufacturing method of the adhesive tapes 3 and 4. The adhesive tapes 3 and 4 are provided with an adhesive layer on one or both sides of a cloth base material, and the width direction of the cloth base material is One end or both ends are subjected to warp cutting treatment, and this production method includes a step of applying warp cutting treatment to the adhesive tape 1 having an adhesive layer formed on one or both surfaces of a cloth base material. By forming the slit 3a and the zigzag cut surface 4a by the warp cutting process, when the adhesive tapes 3 and 4 are to be torn off by hand, it is possible to suppress the detachment of the tearing end portion.

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