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Silicone-self-adhesives, method for the production thereof, complexes using same and uses

A silicone, silicone oil technology, used in adhesives, transportation and packaging, thin material handling, etc.

Active Publication Date: 2010-12-29
BLUESTAR SILICONES FRANCE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] All prior art do not provide a satisfactory solution to the problem of adjusting the tackiness of anti-adhesion silicone coatings

Method used

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  • Silicone-self-adhesives, method for the production thereof, complexes using same and uses
  • Silicone-self-adhesives, method for the production thereof, complexes using same and uses
  • Silicone-self-adhesives, method for the production thereof, complexes using same and uses

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Experimental program
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Effect test

Embodiment 1

[0114] according to method, the electric dose on the silicone surface is 20W / min / cm 2 The crosslinked siliconized polyester film of Preparation 1 was treated with plasma at 75 m / min. The operation is carried out at normal temperature and pressure.

[0115] The method consists of the use of a filamentary discharge, which is homogeneously distributed in a gas mixture of controlled composition at atmospheric pressure, and the exclusion of any traces of oxygen in this air, by replacing e.g. Corona and / or primary coating Stations dry coat in automatic or queued mode.

[0116] Since the process gas used is pure nitrogen doped with 500 ppm hydrogen, the gas is reducing.

[0117] Use natural rubber adhesive 4651 and acrylic adhesive 7475 for queue coating.

Embodiment 2

[0119] according to method, the electric dose on the silicone surface is 20W / min / cm 2 The siliconized polyester film of Preparation 1 was treated with plasma at 75 m / min.

[0120] Since the process gas used is pure nitrogen doped with 500 ppm nitric oxide, the gas is oxidizing.

[0121] Use natural rubber adhesive 4651 and acrylic adhesive 7475 for queue coating.

Embodiment 3

[0123] according to method, the electric dose on the silicone surface is 20W / min / cm 2 The siliconized polyester film of Preparation 1 was treated with plasma at 75 m / min.

[0124] Since the process gas used was pure nitrogen doped with 500 ppm acetylene, the gas was organic.

[0125] Use natural rubber adhesive 4651 and acrylic adhesive 7475 for queue coating.

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Abstract

Method for preparing a substrate comprising an anti-adhesive silicone coating obtained from an anti-adhesive silicone composition based on crosslinked silicone oil(s) with adhesion properties that are modified compared with the initial properties thereof, in which provision is made for a substrate at least partly coated with an anti-adhesive silicone coating and the anti-adhesive silicone coating is cold-plasma-treated, approximately at atmospheric pressure, in an optionally doped nitrogen atmosphere or in an optionally doped carbon dioxide atmosphere, substrate at least partially coated with an anti-adhesive silicone composition, silicone-self-adhesive complex and uses.

Description

technical field [0001] The present invention relates to silicone self-adhesives, processes for their production, compounds using them and their applications. Background technique [0002] In various fields, an anti-adhesion silicone coating is applied to a substrate and an adhesive coating is applied to another substrate, then the coated surfaces are placed face to face and eventually to each other. The substrates are reversibly bonded under pressure. These relate to systems such as those that are pressure sensitive labels or adhesive tapes. Depending on the use or market position of the product, a greater or lesser release force is required to make separation difficult, or conversely, easy. [0003] To modulate this release force, the application of Corona treatment has been proposed. But the resulting effect is uneven and temporary. [0004] The release force can also be adjusted by UV or electron beam radiation treatment (EP-A-1278809). However, this treatment can on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/18
CPCC08J2383/00B29K2083/00C08J2383/04B29C2059/145B29C59/142C09J2421/00C09J2483/005C08J7/12B29C59/14C09J2433/00C08J7/123Y10T428/1462Y10T428/1476
Inventor 让-马克·弗朗斯肖恩·迪菲
Owner BLUESTAR SILICONES FRANCE SAS
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