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Separative film and its processing method

A processing method and technology of release film, applied in the direction of film/sheet adhesive, device for coating liquid on the surface, coating, etc., can solve the problem that users of release film products are difficult to accept and the future is not discussed And the specific content of fluorine, the migration of liquid surfactants, etc., to achieve excellent anti-adhesive isolation effect, good adhesion effect, and easy peeling effect

Inactive Publication Date: 2006-08-23
常熟市富邦胶带有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of the release film obtained by the process introduced by this patented technology and the equipment on which the process depends is staggering
Not only is it difficult for ordinary release film manufacturers to learn from, but it is also difficult for users of release film products to accept
In addition, the applicant also noticed that in the background technology column of the patent specification, it is mentioned that "the process of coating the surface of the film with a liquid fluorine-containing or liquid silicon-containing surfactant has a low cost for manufacturing a release film, but there is a liquid surface. active agent migrates to the surface of the product and is easily damaged by adsorption or rubbing by other materials", but it does not discuss the specific content of fluorine-containing or silicon-containing liquid surfactants
[0003] Silicone-type anti-adhesive agents have a wide range of applications objectively, and they will have a better release effect for adhesives such as hot melt adhesives and natural rubber adhesives, but for silicone-type adhesives with the same molecular structure, they often show limitations in their application. For example, the phenomenon of sticking rolls is very troublesome, which has already been confirmed by the theory that chemically similar people dissolve

Method used

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  • Separative film and its processing method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (a) selecting a polyester film 1 with a thickness of 0.025 mm that is resistant to high temperatures, good transparency, and has no defects such as pinholes and bubbles;

[0025] (b) Dissolve purchased or homemade 2,4-hexafluorovinylmethylsiloxane in heptane at a concentration of 5%, and the resulting 2,4-hexafluorovinylmethylsiloxane solution , add platinum (Pt) as the organoplatinum complex of catalytic main body, stand-by;

[0026] (c) release high voltage to the surface of polyester film 1 with a corona treatment machine, thereby increasing the tension force of polyester film 1, if only one side of polyester film 1 is given anti-adhesive release layer 2, so as long as single-sided Corona treatment is enough, but if it is coated on both sides, both sides need to be treated with corona;

[0027] (d) 2,4-hexafluorovinylmethylsiloxane solution is applied to the surface of the polyester film 1 with a coating machine (if both sides need to be coated, then both sides are ...

Embodiment 2

[0030] Only change the thickness of polyester film 1 in step (a) to 0.050mm; change the concentration in step (b) to 10%; change the temperature in step (d) to 56°C, 80°C, 100°C , 88 ℃, 73 ℃, the advancing speed of polyester film is changed into 65m / min, and all the other are the same as embodiment 1.

Embodiment 3

[0032] Only change the thickness of the polyester film in step (a) to 0.070mm; change the concentration in step (b) to 15%; change the temperature in step (d) to 60°C, 80°C, 100°C, 90 DEG C, 70 DEG C, the advancing speed of polyester film is changed into 45m / min, all the other are the same as embodiment 1.

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Abstract

The strippable film and its preparing process belong to making technology of antisticking material for pressure sensitive organosilicon adhesive tape. The strippable film includes one polyester film layer and at least one antisticking layer on one side of the polyester film and features the antisticking layer of fluoric polymethyl siloxane. Its preparation process includes: selecting polyester film; dissolving 2, 4-hexafluorovinyl methyl siloxane in organic solvent to obtain solution and adding organic Pt complex catalyst; treating the surface of polyester film; coating the solution to the surface of the polyester film and stoving in a stoving channel to form the antisticking 2, 4-hexafluorovinyl methyl siloxane film on the surface of the polyester film; winding and packing. The present invention has the advantages of high antisticking effect, high tensile strength, easy stripping, etc.

Description

technical field [0001] The invention belongs to the field of anti-adhesive isolation material of organic silicon pressure-sensitive adhesive tape and its production technology, and more specifically relates to an isolation material used in industries such as stamping and cutting of electronic components and surface spraying of devices. film and its processing method. Background technique [0002] With the rise and development of the electronics industry, more and more companies need to use high-temperature resistant pressure-sensitive adhesive tapes in the processing of electronic products. Adhesives are none other than silicone-based pressure-sensitive adhesives. Usually, silicone is used as the anti-adhesive coating in non-organic silicon pressure-sensitive adhesive tapes, because the silicone release agent has the characteristics of peelability and relatively good anti-adhesive effect. However, as people increasingly pay attention to the technology and quality requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J7/04B05D7/04C09J7/02
Inventor 沈加平
Owner 常熟市富邦胶带有限责任公司
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