ASTM D2686-19
(Specification)Standard Specification for Polytetrafluoroethylene-Backed Pressure-Sensitive Electrical Insulating Tape
Standard Specification for Polytetrafluoroethylene-Backed Pressure-Sensitive Electrical Insulating Tape
ABSTRACT
This specification establishes the manufacture of and requirements for two types and two grades of electrical insulating tape consisting of a polytetrafluoroethylene (PTFE) film coated on one side with a pressure-sensitive adhesive. Type I is standard backing, while Type II is bondable backing tape. Grades are designate based on backing thickness. Besides standard lengths, widths, and thicknesses, tapes shall also conform to other requirements such as breaking strength, elongation, adhesion to steel and backing, dielectric breakdown, and high-humidity insulation resistance.
SCOPE
1.1 This specification covers electrical insulating tape consisting of a polytetrafluoroethylene (PTFE) film coated on one side with a pressure-sensitive adhesive.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
Note 1: This standard is similar to IEC 60454-3-14.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2686 −19
Standard Specification for
Polytetrafluoroethylene-Backed Pressure-Sensitive
1
Electrical Insulating Tape
This standard is issued under the fixed designation D2686; 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* 4. Classification
1.1 This specification covers electrical insulating tape con- 4.1 This specification covers two types of PTFE tape in
sisting of a polytetrafluoroethylene (PTFE) film coated on one various thicknesses, as follows:
side with a pressure-sensitive adhesive. 4.1.1 Type I—Standard backing coated with a silicone ad-
hesive:
1.2 The values stated in SI units are to be regarded as the
4.1.1.1 Grade A—0.050 mm (0.002 in.) backing thickness,
standard. The values given in parentheses are for information
and
only.
4.1.1.2 Grade B—0.125 mm (0.005 in.) backing thickness.
NOTE 1—This standard is similar to IEC 60454-3-14.
4.1.2 Type II—Bondable backing tape coated with a silicone
1.3 This international standard was developed in accor- adhesive:
dance with internationally recognized principles on standard-
4.1.2.1 Grade A—0.050 mm (0.002 in.) backing thickness,
ization established in the Decision on Principles for the and
Development of International Standards, Guides and Recom-
4.1.2.2 Grade B—0.125 mm (0.005 in.) backing thickness.
mendations issued by the World Trade Organization Technical
5. Materials and Manufacture
Barriers to Trade (TBT) Committee.
5.1 The tape shall comprise a backing consisting of a film of
2. Referenced Documents
tetrafluorethylene polymer on one side of which has been
2
appliedapressure-sensitiveadhesive.Thebackingshallbefree
2.1 ASTM Standards:
of defects such as roughness and holes, and the adhesive layer
D1000 Test Methods for Pressure-Sensitive Adhesive-
shall not show defects such as lumps or gels and bare areas.
Coated Tapes Used for Electrical and Electronic Applica-
The slit edge of the tape shall be free of defects such as nicks.
tions
The adhesive shall not transfer when the tape is unwound from
D1711 Terminology Relating to Electrical Insulation
the roll. It is acceptable for the product to contain a release
2.2 IEC Standard:
liner to assist the unwind and avoid transfer without affecting
IEC 60454-3 Specifications for Pressure-Sensitive Adhesive
3
the adhesion of the tape.
Tapes for Electrical Insulation
6. Requirements
3. Terminology
6.1 All tapes shall meet the requirements given in Table 1
3.1 Definitions—For definitions of terms used in this
for the grades specified.
specification, refer to Terminology D1711.
7. Standard Rolls
1
This specification is under the jurisdiction of ASTM Committee D09 on 7.1 The standard widths and lengths shall be selected from
Electrical and Electronic Insulating Materials and is the direct responsibility of
the following:
Subcommittee D09.07 on Electrical Insulating Materials.
7.1.1 Widths:
Current edition approved March 1, 2019. Published March 2019. Originally
mm in. mm in.
approved in 1968. Last previous edition approved in 2012 as D2686 – 06 (2012).
1 7
6 ⁄4 22 ⁄8
DOI: 10.1520/D2686-19.
3
2
9 ⁄8 25 1
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1 1
12 ⁄2 30 1 ⁄4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5 1
15 ⁄8 38 1 ⁄2
Standards volume information, refer to the standard’s Document Summary page on
3
19 ⁄4 50 2
the ASTM website.
3
Widths greater than 50 mm (2 in.) shall be agreed upon
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. between the purchaser and the seller.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2686 − 19
TABLE 1 Requirements for PTFE Pressure-Sensitive Adhesive
Tapes
Requirements Grade A Grade B
Nominal thickness of backing, mm (in.) 0.050 (0.002) 0.125 (0.005)
Total thickness, mm avg (in. avg) 0.100 ± 0.025 0.180 ± 0.025
(0.004 ± 0.001) (0.007± 0.001)
Breaking strength, min, kN/m (lbf/in.) avg 1.7 (10) 3.5 (20)
Elongation, min, percent avg 75 150
Adhesion, min, N/m (ozf/in.) avg:
Steel 164 (15) 219 (20)
Backing (Type II only) 164 (15) 164 (15)
Dielectric breakdown, min, V avg:
Standard condition 6000 10 000
After water immersion 6000 10 000
5 5
High-humidity insulation resistance, 2×10 2
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2686 − 06 (Reapproved 2012) D2686 − 19
Standard Specification for
Polytetrafluoroethylene-Backed Pressure-Sensitive
1
Electrical Insulating Tape
This standard is issued under the fixed designation D2686; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers electrical insulating tape consisting of a polytetrafluoroethylene (PTFE) film coated on one side
with a pressure-sensitive adhesive.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
NOTE 1—This standard is similar to IEC 60454-3-14.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applications
D1711 Terminology Relating to Electrical Insulation
2.2 IEC Standard:
3
IEC 60454-3 Specifications for Pressure-Sensitive Adhesive Tapes for Electrical Insulation
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, refer to Terminology D1711.
4. Classification
4.1 This specification covers two types of PTFE tape in various thicknesses, as follows:
4.1.1 Type I—Standard backing coated with a silicone adhesive:
4.1.1.1 Grade A—0.050 mm (0.002 in.) backing thickness, and
4.1.1.2 Grade B—0.125 mm (0.005 in.) backing thickness.
4.1.2 Type II—Bondable backing tape coated with a silicone adhesive:
4.1.2.1 Grade A—0.050 mm (0.002 in.) backing thickness, and
4.1.2.2 Grade B—0.125 mm (0.005 in.) backing thickness.
5. Materials and Manufacture
5.1 The tape shall comprise a backing consisting of a film of tetrafluorethylene polymer on one side of which has been applied
a pressure-sensitive adhesive. The backing shall be free of defects such as roughness and holes, and the adhesive layer shall not
show defects such as lumps or gels and bare areas. The slit edge of the tape shall be free of defects such as nicks. The adhesive
shall not transfer when the tape is unwound from the roll. The product mayIt is acceptable for the product to contain a release liner
to assist the unwind and avoid transfer without affecting the adhesion of the tape.
1
This specification is under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials and is the direct responsibility of Subcommittee
D09.07 on Flexible and Rigid Electrical Insulating Materials.
Current edition approved April 1, 2012March 1, 2019. Published April 2012March 2019. Originally approved in 1968. Last previous edition approved in 20062012 as
D2686 – 06.D2686 – 06 (2012). DOI: 10.1520/D2686-06R12.10.1520/D2686-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2686 − 19
6. Requirements
6.1 All tapes shall meet the requirements given in Table 1 for the grades specified.
7. Standard Rolls
7.1 The standard widths and lengths shall be selected from the following:
7.1.1 Widths:
mm in. mm in.
1 7
6 ⁄4 22 ⁄8
3
9 ⁄8 25 1
1 1
12 ⁄2 30 1 ⁄4
5 1
15 ⁄8 38 1 ⁄2
3
19 ⁄4 50 2
mm in. mm in.
1 7
6 ⁄4 22 ⁄8
3
9 ⁄8 25 1
1 1
12 ⁄2 30 1 ⁄4
5 1
15 ⁄8 38 1 ⁄2
3
19 ⁄4 50 2
Widths greater than 50 mm (2 in.) shall be agreed upon between the purchaser and the seller.
TABLE 1 Requirements for PTFE Pressure-Sensitive Adhesive
Tapes
Requirements Grade A Grade B
Nominal thickness of backing, mm (in.) 0.050 (0.002) 0.125 (0.005)
Total thickness, mm
...
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