Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1988-09-16
1990-02-13
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
1562757, 2504921, 427 40, B32B 3128
Patent
active
049003887
ABSTRACT:
The present invention concerns methods and apparatus for laminating polymeric sheet materials wherein the use of a separate adhesive and/or the use of heat as a bonding means are avoided. In particular, methods and apparatus are disclosed wherein at least one polymeric sheet is exposed to a flowing of gaseous cold plasma to form free radicals on the surface thereof. Said free radicals serve to effect bonding upon application of such treated polymeric sheet to a second polymeric sheet. In preferred embodiments, approximately 180,000 to 500,000 volts of electromagnetic energy are applied to a stream of gaseous material, such as argon gas, and utilizing a radio wave frequency discharge of approximately 12.56 mega-Hertz. In some preferred embodiments, the cold plasma may be applied at an effective pressure of approximately 1.1 Torr in the reaction area.
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Plasma Surface Treatment: Emerging Technology Cuts Costs, Brochure, Process Engineering News.
Biflex Development Partners, Ltd.
Dawson Robert A.
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