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Adhesive sheet having multi-staged air vent channels

A technology of air discharge and adhesive sheet, which is applied in the direction of film/sheet adhesive, adhesive, film/sheet release liner, etc., which can solve the problem of reduced adhesion, poor appearance, and reduced bonding area, etc. question

Inactive Publication Date: 2009-12-23
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the film adheres to the target surface, a film with a smooth adhesive surface will have a poorer appearance due to the swollen surface of the film because air will be trapped between the adhesive and the target surface
Additionally, a reduction in adhesion due to a layer of trapped air reduces the bonding area to the target surface

Method used

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  • Adhesive sheet having multi-staged air vent channels
  • Adhesive sheet having multi-staged air vent channels
  • Adhesive sheet having multi-staged air vent channels

Examples

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preparation example Construction

[0022] The present invention provides an adhesive sheet and a method for producing the same, wherein, when concave-convex portions are formed on the surface of the adhesive to define air discharge channels, channels having different depths are formed so that some channels can disappear under low pressure , to increase the bonding area, so the design level of the bonding force of the adhesive can be reached in a short period of time. In addition, during the application of the sheet, the concave-convex surface can discharge the air trapped between the adhesive surface and the target surface, and the channel will disappear in a short time to increase the smoothness of the adhesive surface, thereby preventing the concave-convex part of the adhesive from appearing on the surface of the sheet.

[0023] In the present invention, the opposite structure corresponding to the air discharge channel is embossed on the release liner using a conventional embossing method. The release liner ...

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Abstract

The present invention improves the application of the adhesive sheet by adding air vent channels to the adhesive surface of the adhesive sheet. According to the present invention, air discharge channels with various heights and widths are formed so that each air discharge channel can disappear at a certain time interval, thereby promoting the removal of air, and increasing the adhesive area to shorten the time to reach the designed adhesive force. The required time, and the increase in the bonding area improves the smoothness between the bonding surface and the target surface, so that the pattern of the air discharge channel does not appear on the front surface of the adhesive sheet.

Description

technical field [0001] The present invention relates to an adhesive sheet for fixing a film on a target surface using an adhesive. Background technique [0002] A film can be removably attached on a target surface using an adhesive sheet, which is used in various fields due to its ease of use. Specific examples of the adhesive sheet include reflective sheets, advertising films, decorative films for construction, labels, tapes, and the like. [0003] In order to prepare such an adhesive sheet, a substrate is first prepared by rolling or casting, the adhesive is coated on one surface of a release liner, and then the coated surface of the release liner is bonded to the substrate. One side of the sheet is bonded to each other. [0004] Release liners are typically prepared by coating paper with polyethylene, polypropylene, polyester, etc., and the coating is silicone-treated or otherwise treated to facilitate easy release from the adhesive. [0005] Prepare the release surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02
CPCC09J7/40C09J7/403C09J2301/204
Inventor 林东勋南允祐车炯旻李康烨林景嫄
Owner LG CHEM LTD
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