Marking fluorocarbon surfaces
First Claim
1. A method of marking a fluorocarbon body having a surface of a reflective fluorocarbon polymer composition comprising applying a light-transmitting ethylene-tetrafluoro ethylene copolymer composition as a surface coating over said surface of said reflective composition, and marking said coated surface by laser printing.
1 Assignment
0 Petitions
Accused Products
Abstract
Most fluorocarbon polymer surfaces (especially PTFE and FEP) have hitherto been considered unsuitable for marking by laser printing, which would have obvious attractions for marking such materials in high performance electric cables. It has now been found that such surfaces can be made receptive for laser printed markings. A reflective surface is first formed, preferably by incorporating white pigment into a fluorocarbon base, and a light-transmitting (preferably translucent) ETFE pr ECTFE layer is applied over it. When the reflective layer is based on PTFE or FEP, a primer layer formed from a mixed dispersion of PTFE or FEP and ETFE or ECTPE (as appropriate) is preferably applied before the underlying PTFE or FEP composition is sintered.
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Citations
14 Claims
- 1. A method of marking a fluorocarbon body having a surface of a reflective fluorocarbon polymer composition comprising applying a light-transmitting ethylene-tetrafluoro ethylene copolymer composition as a surface coating over said surface of said reflective composition, and marking said coated surface by laser printing.
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5. A method of marking fluorocarbon body with a surface of a reflective fluorocarbon polymer composition comprising applying a light-transmitting ethylene/chlorotrifluoroethylene polymer composition as a surface coating over said surface of said reflective composition, and marking said coated surface by laser printing.
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6. A method of marking a fluorocarbon body with a surface on a reflective fluorocarbon polymer composition, comprising:
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applying a light transmitting ethylene tetrafluoroethylene copolymer composition as a surface coating over said surface of reflective composition, and forming, by laser printing on said coated surface, dark indicia visible against said reflective surface as background. - View Dependent Claims (7, 8, 9, 12, 13)
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14. A method of marking a fluorocarbon body with a surface of a reflective fluorocarbon polymer composition comprising applying a light transmitting ethylene/chlorotrifluoroethylene polymer composition as a surface coating over said surface of said reflective composition, and forming, by laser printing on said coated surface, dark indicia visible against said reflective surface as background.
Specification