Adhesive sheet and release member

一种剥离材料、粘合片的技术，应用在剥离材料,粘合片材用剥离材料,带有剥离材料的粘合片材领域，能够解决不实施轧纹加工等问题，达到平滑性优异、良好外观性、良好外观的效果

Active Publication Date: 2007-05-30
RIKEN TECHNOS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This release film may have irregularities on the surface due to fine particle precipitation in order to improve the smoothness, but it is not embossed.

Method used

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  • Adhesive sheet and release member
  • Adhesive sheet and release member
  • Adhesive sheet and release member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] By pressing the concave embossed pressing plate shown in FIG. 2 against the release paper at 140° C. for 20 seconds, the embossed shape is transferred to the release paper to obtain a release material 1 having a convex surface shape, The die embossed pressing plate is spaced at 200 μm intervals (density: every 1 cm 2 2.5×10 3 1) engraved with a cross-shaped groove 4 that does not reach the side (the cross-section is U-shaped with a width of 20 μm and a depth of 10 μm, and the vertical and horizontal lengths of the cross are 100 μm).

[0130] Next, an acrylic adhesive and a hardener were mixed together with toluene and ethyl acetate as a solvent in a ratio of 1000:6:100:100 (weight ratio), and stirred well at room temperature for 2 minutes. This mixture was applied on the release material 1 and dried at 100° C. for 2 minutes to obtain an adhesive layer with a thickness of 30 μm. Next, an adhesive sheet A with a release material was obtained by laminating a PVC resin fi...

Embodiment 2

[0133] By pressing the concave embossed pressing plate shown in FIG. 5 against the release paper at 140° C. for 20 seconds, the embossed shape is transferred to the release paper to obtain a release material 2 having a convex surface shape, The die embossed pressing plate is spaced at 400μm intervals (density: every 1cm 2 7.2×10 2 1) engraved with a hexagonal groove 4 that does not reach the side (the section is U-shaped with a width of 30 μm and a depth of 15 μm, and the length of one side of the hexagon is 116 μm). Using this release material, it carried out similarly to Example 1, and obtained the adhesive sheet B with a release material.

Embodiment 3

[0135] By pressing the concave embossed pressing plate shown in FIG. 2 against the release paper at 140° C. for 20 seconds, the embossed shape is transferred to the release paper to obtain a release material 3 having a convex surface shape, The die embossed pressing plate is spaced at 100 μm intervals (density: every 1 cm 2 1.0×10 4 1) engraved with a cross-shaped groove 4 that does not reach the side (the cross-section is U-shaped with a width of 20 μm and a depth of 10 μm, and the vertical and horizontal lengths of the cross are 50 μm). Using this release material, it carried out similarly to Example 1, and obtained the adhesive sheet C with a release material.

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Abstract

An adhesive sheet formed by providing an adhesive agent layer on one surface of a resin film, where the resin film shrinks less even the sheet is stored for a long time with a release member attached to it. The adhesive sheet has a resin film and an adhesive agent layer adhered to one surface of the resin film. The adhesive agent layer has one or more grooves in the surface on the other side that adheres to the resin film. The grooves are present only on the inner side of the surface on the other side and do not penetrate up to the side surfaces of the adhesive agent layer. Also provided is a release member for an adhesive sheet, and the surface of the release member is embossed and has excellent smoothness.

Description

technical field [0001] The present invention relates to an adhesive sheet in which an adhesive layer is provided on one surface of a resin film. In particular, the present invention relates to a pressure-sensitive adhesive sheet having a release material that shrinks a resin film for a long period of time. The invention also relates to release materials. In particular, the present invention relates to a release material for an adhesive sheet that has embossing on the surface and is excellent in smoothness. The present invention further relates to a release-material-attached pressure-sensitive adhesive sheet comprising the above-mentioned pressure-sensitive adhesive sheet and the above-mentioned release material. Background technique [0002] The pressure-sensitive adhesive sheet provided with the pressure-sensitive adhesive layer on one side of the resin film is stored with a release material attached thereto. Usually, the shrinkage rate of release materials made of paper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J7/38
CPCC09J2201/28C09J7/0207C09J7/0232C09J7/38C09J7/403Y10T428/1486Y10T428/28Y10T428/14Y10T428/24975Y10T428/1476Y10T428/265C09J2301/204C09J7/20
Inventor 铃木康广
Owner RIKEN TECHNOS CORP
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