Process for producing filled polytetrafluoroethylene resin composite materials and products
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United States of America Patent
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Dec 16, 1997
Grant Date -
N/A
app pub date -
Feb 28, 1996
filing date -
Jan 29, 1993
priority date (Note) -
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Abstract
A process is provided for producing an additive-containing PTFE or other fluorocarbon polymer resin which achieves substantially complete and thorough homogeneous distribution of the selected additive within the polymer matrix. The selected additive and polymer are blended and then subjected to an air milling in an air impact pulverizer to achieve particle to particle impact and the homogeneous distribution of the additive in and among the polymer particles. The milled polymer-additive composite is paste extruded and further processed to form additive-containing PTFE products such as dental floss, insulating or conductive materials, laser markable materials, abrasion resistance materials and the like.
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