Laser markable polytetrafluoroethylene resin material and method

Details Laser markable polytetrafluoroethylene resin material and method Laser markable polytetrafluoroethylene resin material and method

1995-02-08

1996-03-26

Szekely, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Forming articles by uniting randomly associated particles

264211, 264122, 264124, 26417211, 264464, 264482, 264127, 524546, 524430, 524434, B29C 4700, B29C 3502, C08K 322, C08L 2712

Patent

active

055018270

ABSTRACT:
A laser markable composite material which when so marked retains good color contrast after heat aging. The material comprises polytetrafluoroethylene resin, photosensitive filler material and an extrusion aid. The photosensitive material is preferably a metal oxide and has a larger mean particle size than typical pigments. Also disclosed is a sequence of milling, mixing and blending steps which forms the desired composite material.

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Grant & Hackh's Chemical Dictionary, 5th Edition, Mc-Graw Hill Book Company, 1987, pp. 638-639.

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