Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Release film having excellent peelability

A release film, peeling technology, applied in the direction of adhesive type, film/sheet release liner, film/sheet adhesive, etc., can solve the problem of discontinuous silicone release layer, silicone peeling, The problem of reduced adhesive force of the adhesive layer, etc., achieves the effect of excellent peelability and anti-blocking, small peeling force, and high use value

Active Publication Date: 2016-09-21
FUJIMORI KOGYO CO LTD
View PDF10 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silicone release layer becomes discontinuous due to the inert particles, and if it comes into contact with a solvent, the solvent may infiltrate the interface between the inert particles and the silicone, and the silicone may fall off
In addition, since inert particles having a particle diameter larger than the thickness of the silicone release layer are added, in the case of using a release film for the surface protection of the adhesive layer, the inert particles may adhere to the adhesive layer side, causing the Reduced adhesion of the adhesive layer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Release film having excellent peelability
  • Release film having excellent peelability
  • Release film having excellent peelability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (release film of embodiment 1)

[0066] 7.5 parts by weight of ethyl cellulose (manufactured by DOW Chemical, trade name: ETHOCEL (registered trademark) 100FP), and 0.0375 parts by weight of a silicone-based resin polymer with an average particle diameter (volume-based average particle diameter) of 2 μm were put into a beaker. Microparticles (manufactured by Momentive Performance Materials, trade name: Tospearl (registered trademark) 120) and 92.5 parts by weight of a 50 / 50 mixed solvent of toluene / ethyl acetate were mixed and stirred until ethyl cellulose was dissolved to prepare a paint. Next, on the corona-untreated surface of a single-sided corona-treated polyester film with a thickness of 50 μm, the dried binder resin was coated by the Meyer rod method to a thickness of 1.0 μm, and then hot air was circulated at 120°C. Dryer was heated for 1 minute to obtain a polyester film having surface irregularities on one surface. Then, on the opposite surface (corona treate...

Embodiment 2

[0088] The release film of Example 2 was produced in the same manner as in Example 1 except that the thickness of the release agent layer was 0.4 μm.

Embodiment 3

[0090] The release film of Example 3 was produced in the same manner as in Example 1 except that the thickness of the release agent layer was 0.5 μm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
peel strengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention provides a release film excellent in peelability. The release film has a small peeling force, which is not liable to increase with a lapse of time even in a state that the release film adheres to an adhesive layer; the transfer of a silicone component to the adhesive layer is less, and the adhesive force of the adhesive layer to which the film adheres is not reduced. The release film excellent in peelability is characterized in that a release agent layer (4) having a thickness of 0.4 to 2 [mu]m and containing a silicone-based release agent is provided on one surface of a base film (1), and an adhesive resin layer (2) containing inorganic fine particles and / or polymer particles as fine particles (3) are arranged on the other surface of the base film; the fine particles (3), the adhesive resin layer (2) and the release agent layer (4) satisfy the following conditions (1) and (2): (1) the volume reference average particle size of the fine particles (3) is more than twice the thickness of the release agent layer (4); (2) the thickness of the adhesive resin layer (2) is in the range of 25 to 60% of the volume reference average particle size of the fine particles (3).

Description

technical field [0001] The present invention relates to a release film used for surface protection of various adhesive products or objects with adhesive properties. More specifically, it relates to a release film excellent in releasability, which has a small releasable force, and is difficult to increase the releasable force even after time elapses in a state where it is attached to an adhesive layer, and the silicone component is attached to the adhesive layer. There is little transfer of the agent layer, so it does not reduce the adhesion of the applied adhesive layer. Background technique [0002] Release liners (also sometimes referred to as release films) have long been used in a variety of applications. For example, it is widely used as a release film for molding green sheets used in the manufacture of various ceramic electronic components such as multilayer ceramic capacitors and ceramic substrates; in the manufacture of polarizers, optical filters, flat panel displa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J101/28
CPCC09J7/201C09J7/22C09J101/28C09J2400/225C09J2467/006C09J7/20C09J7/40B32B27/08B32B27/18B32B27/36B32B2367/00B32B2307/748
Inventor 宫坂洋之林益史
Owner FUJIMORI KOGYO CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com