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Release film free of silicon coating and preparation method of release film free of silicon coating

A release film and silicon coating technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve problems such as low surface energy, and achieve the effect of reducing product density, compact structure, easy peeling, and cost saving

Active Publication Date: 2016-11-16
河北首发新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are three main types of release film: polyester, polyethylene, and polypropylene. Polypropylene is a non-polar material. Type paper field

Method used

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  • Release film free of silicon coating and preparation method of release film free of silicon coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh each component in proportion, the first functional layer uses 75 parts of homopolypropylene, 5 parts of silicone masterbatch and 5 parts of calcium carbonate masterbatch, and the core layer uses 70 parts of homopolypropylene and 10 parts of calcium carbonate masterbatch Material, the bottom layer uses 90 parts of polypropylene and 2 parts of anti-adhesive masterbatch. The following production and processing steps are used for production:

[0028] (1) Heat and melt the homopolypropylene and calcium carbonate masterbatch in the main extruder to obtain the core layer melt; melt the homopolypropylene, silicone masterbatch and calcium carbonate masterbatch in the auxiliary extruder , to obtain the release functional layer melt; melt the homopolypropylene and anti-blocking agent in the auxiliary extruder to obtain the bottom melt; filter the three melts respectively, and merge them in the die head and pass through the die head Extrude, extruder die head temperature is ...

Embodiment 2

[0034] Weigh each component according to the proportion. The first functional layer uses 90 parts of homopolypropylene, 10 parts of silicone masterbatch and 15 parts of calcium carbonate masterbatch. The core layer uses 90 parts of homopolypropylene and 30 parts of calcium carbonate masterbatch. The bottom layer is made of 98 parts of polypropylene and 10 parts of anti-adhesive masterbatch. The following production and processing steps are used for production:

[0035] (1) Heat and melt the homopolypropylene and calcium carbonate masterbatch in the main extruder to obtain the core layer melt; melt the homopolypropylene, silicone masterbatch and calcium carbonate masterbatch in the auxiliary extruder , to obtain the release functional layer melt; melt the homopolypropylene and anti-blocking agent in the auxiliary extruder to obtain the bottom melt; filter the three melts respectively, and merge them in the die head and pass through the die head Extrude, extruder die head tempe...

Embodiment 3

[0041] Weigh each component in proportion. The first functional layer uses 86 parts of homopolypropylene, 6 parts of silicone masterbatch and 8 parts of calcium carbonate masterbatch. The core layer uses 85 parts of homopolypropylene and 15 parts of calcium carbonate masterbatch. The bottom layer is made of 96 parts of polypropylene and 4 parts of anti-adhesive masterbatch. The following production and processing steps are used for production:

[0042] (1) Heat and melt the homopolypropylene and calcium carbonate masterbatch in the main extruder to obtain the core layer melt; melt the homopolypropylene, silicone masterbatch and calcium carbonate masterbatch in the auxiliary extruder , to obtain the release functional layer melt; melt the homopolypropylene and anti-blocking agent in the auxiliary extruder to obtain the bottom melt; filter the three melts respectively, and merge them in the die head and pass through the die head Extrude, extruder die head temperature is 245 ℃; ...

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Abstract

The invention belongs to the technical field of high-polymer materials and particularly relates to a release film free of silicon coating and a preparation method of the release film free of silicon coating. The release film is in a three-layer structure comprising a first functional layer, a middle layer and a bottom layer or the first functional layer, the middle layer and a second functional layer. By adoption of homo-polypropylene and calcium carbonate master batch as main raw materials, the three-layer release film is structurally compact and easy to strip and is small in release force and more effective on the basis that adhesive surface characteristics are guaranteed against influences, and the problem of generally high release transferring of conventional light release films is solved; in addition, a silicon coating procedure is avoided, so that cost is saved; due to avoiding of toxic and volatile solvents and the like in a processing process, environment pollution is prevented, and harms to operators are reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a coating-free silicon release film and a preparation method thereof. Background technique [0002] Release film is also known as peeling film, isolation film, separation film, barrier film, release film, film, plastic film, hole masking film, silicone oil film, silicone oil paper, anti-adhesive film, type paper, slip film, Tianna paper, Release paper, etc., refers to a film whose surface can be distinguished. The release film is not sticky or slightly sticky after contacting with a specific material under limited conditions. Because the release film has the advantages of isolation, filling, protection, and easy peeling, the release film has been widely used in packaging, printing, flexible circuits, insulation products, circuit boards, lamination, electronics, films for sealing materials, adhesives Products, die-cutting and punching processing and other in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B9/04B32B27/08B32B27/32B32B27/30B32B27/18B32B37/10B32B38/00
CPCB32B9/04B32B9/045B32B27/08B32B27/18B32B27/308B32B27/32B32B37/10B32B38/0012B32B38/0036B32B2038/0028B32B2307/72B32B2323/10
Inventor 王志平齐庆德李文杰王浩帆江方兴刘书静
Owner 河北首发新材料科技有限公司
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