Adhesive tape and masker

A technology of adhesive tapes and adhesives, which is applied in the direction of film/sheet adhesives, adhesives, transportation and packaging, etc. It can solve the problems of low coating and no stickiness, etc., and achieve excellent water resistance and followability Excellent, hand-tearable effect

Active Publication Date: 2014-07-16
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, this substrate is only formed of thermoplastic fibers, which considers the offset resistance of high-tack adhesives, but does not take into account low-tack paints, etc.
In addition, hand-tearability is not considered, so there are problems in architectural painting masking tapes, etc.

Method used

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  • Adhesive tape and masker
  • Adhesive tape and masker
  • Adhesive tape and masker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] (Production of adhesive tape base sheet)

[0124] A polypropylene long-fiber web formed by a single layer with a fiber diameter of 18 μm obtained by the spunbonding method was deposited on a web conveyor belt, and thermally compressed with a pair of embossing rolls to obtain a partial thermal compression ratio of 8%, Weight per unit area is 40g / m 2 , Polypropylene long-fiber non-woven fabric with a thickness of 310 μm. Next, calendering was carried out at a temperature of 80° C. and a linear pressure of 300 N / cm to make a thickness of 120 μm, and then linear embossing was carried out in the width direction of the tape at a temperature of 80° C. and a linear pressure of 300 N / cm ( After width 0.3mm x embossing interval 3mm), resin impregnation treatment was performed. In addition, the angle of linear embossing was 0.2 degrees with respect to the roll rotation axis. As the synthetic resin, water-based acrylic resin "NIKASOL FA-2555A" manufactured by Nippon Carbide Indu...

Embodiment 2

[0131] (Production of adhesive tape base sheet)

[0132] The fibers obtained by the spunbond method in the upper and lower layers have a diameter of 18 μm and a weight per unit area of ​​11 g / m 2 The polypropylene fiber non-woven fabric (S) and the two layers in the middle layer obtained by the melt-blown method have a fiber diameter of 4 μm and a weight per unit area of ​​1.5 g / m 2 The 4-layer laminated web (SMMS) of the polypropylene microfiber nonwoven fabric (M) was thermocompression-bonded to obtain a partial thermocompression bonding rate of 14% and a weight per unit area of ​​25g / m 2 , A multi-layer long-fiber nonwoven fabric with a thickness of 240 μm. Next, calendering was performed at a temperature of 20° C. and a linear pressure of 300 N / cm to have a thickness of 80 μm, and then linear embossing and resin impregnation were performed in the same manner as in Example 1. As the synthetic resin, use the same resin as in Example 1, and achieve 15 g / m by the amount of r...

Embodiment 3

[0137] (Production of adhesive tape base sheet)

[0138] On the side of the release agent-coated side of the adhesive tape base cloth b obtained in the same manner as in Example 2, the amount of coating after drying was 5 g / m 2 "NIPOL LX430" manufactured by Zeon Corporation having a glass transition temperature of 12° C. was applied in such a manner as to obtain a tape base sheet c.

[0139] (Coating of adhesives and release agents)

[0140] With the adhesive a same as embodiment 1 with 40g / m 2 Coated on the adhesive coated surface of the above-mentioned adhesive tape base sheet c, on the release agent coated surface at 0.1g / m 2 The pressure-sensitive adhesive tape of the present invention was obtained by applying a release agent "Peeloil 1010 manufactured by Ichisha Yushi Co., Ltd.".

[0141] Table 1 shows the evaluation results of the obtained pressure-sensitive adhesive tape together with the characteristics of the nonwoven fabric, the base fabric for tape, and the tape ...

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Abstract

The purpose of the present invention is to provide an adhesive tape that has a feel and texture that is very close to paper tape; that follows curved surfaces, rough surfaces, and irregular surfaces well; has excellent water resistance; is not susceptible to tearing when removed after the completion of work; and is easily cut by hand. The adhesive tape of the present invention is characterized as follows: a tape base cloth comprises spunbonded thermoplastic long fiber non-woven cloth with a basis weight of 15-60 g / m2 and the tape is embossed in the width direction; a tape substrate sheet is prepared by permeating the tape base cloth with a synthetic resin having a glass transition temperature of no more than 20 DEG C so that the quantity of synthetic resin after drying is 5-150 % by weight of the total basis weight of the non-woven cloth; and an adhesive agent is applied to one side of the tape substrate sheet and a release agent to the other side thereof.

Description

technical field [0001] The present invention relates to a base fabric for an adhesive tape that is excellent in conformability to curved surfaces, rough surfaces, and concave-convex surfaces, adhesiveness, and water resistance, and has less tape breakage when peeled off after construction, and has good hand-tearability. Tapes (in particular, masking tapes for architectural painting or sealing, and curing tapes suitable for fixing as curing sheets) and masks. Background technique [0002] Conventionally, paper base materials such as Japanese paper and crepe paper mainly composed of wood pulp have been known as base materials for pressure-sensitive adhesive tapes. Adhesive tapes using these paper base materials can be easily cut by hand, that is, have good so-called hand-tearability, and thus are widely used as masking tapes in vehicles and buildings for painting and sealing applications where workability is important. In addition, paper substrates can be freely given flexibi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/04C09J201/00C09J7/21
CPCC09J2400/263C09J2433/00C09J2475/00C09J2483/00C09J2203/31C09J7/21Y10T428/24521Y10T428/24504Y10T428/24554Y10T428/24512
Inventor 增成泰宏黑濑哲男生水胜次岩崎博文
Owner ASAHI KASEI KK
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