Standard Specification for Unsintered Polytetrafluoroethylene (PTFE) Extruded Film or Tape

ABSTRACT
This specification covers three types and several grades of unsintered extruded films or tapes manufactured from virgin, unpigmented polytetrafluoroethylene in specified nominal thicknesses. Having different apparent densities, the three types of tapes covered here are: thread seal tapes (Type I); low density tapes (Type II); and wire and cable tapes (Type III). Individual grades shall adhere accordingly to thickness, tensile strength at yield, and elongation at maximum strength requirements.
SCOPE
1.1 This specification covers unsintered extruded films or tapes manufactured from virgin, unpigmented polytetrafluoroethylene, in nominal thickness from 0.025 to 0.51 mm [0.001 to 0.020 in.], and are > 97 % PTFE in composition.
1.1.1 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.
1.2 The values stated in SI units are detailed in IEEE/ASTM SI 10 are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following precautionary statement pertains only to the test method portion, Section 8 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—Although this specification and ISO/DIS 13000-1 and ISO/DIS 13000-2 differ in approach or detail, data obtained relating to specific properties, using either are technically equivalent.

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Publication Date
31-Mar-2005
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ASTM D6585-05 - Standard Specification for Unsintered Polytetrafluoroethylene (PTFE) Extruded Film or Tape
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6585 – 05
Standard Specification for
Unsintered Polytetrafluoroethylene (PTFE) Extruded Film or
1
Tape
This standard is issued under the fixed designation D6585; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D1711 Terminology Relating to Electrical Insulation
D3892 Practice for Packaging/Packing of Plastics
1.1 This specification covers unsintered extruded films or
D6040 Guide to Test Methods for Unsintered Polytetrafluo-
tapes manufactured from virgin, unpigmented polytetrafluoro-
roethylene (PTFE) Extruded Film or Tape
ethylene, in nominal thickness from 0.025 to 0.51 mm [0.001
E29 Practice for Using Significant Digits in Test Data to
to 0.020 in.], and are > 97 % PTFE in composition.
Determine Conformance with Specifications
1.1.1 TheuseofrecycledPTFEforproductionofunsintered
IEEE/ASTM SI-10 Standard for Use of the International
extruded films or tapes has not been identified at this time.
System of Units (SI): The Modern Metric System
When commercial usable processes and materials are avail-
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2.2 ISO Standard:
able, this specification will be revised to include recycled
ISO 13000-1 Plastics—Polytetrafluoroethylene (PTFE)
materials.
Semi-Finished Products—Part 1: Requirements and Des-
1.2 ThevaluesstatedinSIunitsaredetailedinIEEE/ASTM
ignation
SI-10 are to be regarded as the standard. The values given in
ISO 13000-2 Plastics—Polytetrafluoroethylene (PTFE)
parentheses are for information only.
Semi-Finished Products—Part 2: Preparation of Test
1.3 The following precautionary statement pertains only to
Specimens and Determination of Properties Designation
the test method portion, Section 8 of this specification: This
2.3 GSA Standard:
standard does not purport to address all of the safety concerns,
4
A-A-58092 Tape, Antiseize, Polytetrafluorethylene
if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
NOTE 2—Supersedes MIL-T-27730A (ASG) 7 January 1997.
practices and determine the applicability of regulatory limita-
3. Terminology
tions prior to use.
3.1 Definitions—Definitions are in accordance with Termi-
NOTE 1—Although this specification and ISO/DIS 13000-1 and ISO/
nology D1711, Terminology D883, and Test Method D257 and
DIS 13000-2 differ in approach or detail, data obtained relating to specific
abbreviated terms are in accordance with Terminology D1600,
properties, using either are technically equivalent.
unless otherwise specified.
2. Referenced Documents
3.1.1 lot, n—one production run or a uniform blend of two
2
2.1 ASTM Standards: or more production runs.
D257 Test Methods for DC Resistance or Conductance of 3.2 Definitions of Terms Specific to This Standard:
Insulating Materials 3.2.1 film, n—full width material received as finished film.
D618 Practice for Conditioning Plastics for Testing 3.2.2 tape, n—material that has been slit from the finished
D638 Test Method for Tensile Properties of Plastics film.
D883 Terminology Relating to Plastics 3.2.3 tensile strength at yield, n—from Test Methods D638,
D1600 Terminology for Abbreviated Terms Relating to Fig. A2.3.
Plastics
4. Classification
4.1 This specification covers three types of unsintered
1 extruded PTFE tapes:
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic 4.1.1 Type I—Thread seal tape (T.S.T.) with an apparent
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Materials.
density of 0.50 to 1.60 g/cm .
Current edition approved April 1, 2005. Published June 2005. Originally
approved in 2000. Last previous edition approved in 2000 as D6585 - 00. DOI:
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10.1520/D6585-05. Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 4th Floor, New York, NY 10036.
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contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM A-A-58092 can be obtained from General Services Administration, Engineer-
th
Standards volume information, refer to the standard’s Document Summary page on ing and Commodity Management Division (9FTE-10), 400 15 St. SW, Auburn,
the ASTM website. WA 98001.
*A Summary of Changes section appears at the end of this standard.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
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D6585 – 05
4.1.2 Type II—Low density tape with an apparent density of material has been exposed to temperatures below 20°C [68°F]
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0.60 to 0.80 g/cm . within 24 h period prior to test, the condi
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