หมายเลข : ASTM D7193 - 17
ชื่อเรื่อง : Standard Specification for Unsintered Pigmented Polytetrafluoroethylene (PTFE) Extruded Film or Tape
ขอบข่าย : This specification covers unsintered, pigmented, extruded films or tapes manufactured from polytetrafluoroethylene, in nominal thicknesses from 0.025 mm (0.001 in.) to 0.51 mm (0.020 in.), which are ≥99 % virgin PTFE in composition prior to introducing pigments. For unsintered non-pigmented products refer to Specification D6585. The use of recycled PTFE for production of unsintered extruded films or tapes has not been identified at this time. When commercial usable processes and materials are available, this specification will be revised to include recycled materials.
Link : https://www.astm.org/Standards/D7193.htm
