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ASTM D4969-02

(Specification)

Standard Specification for Polytetrafluoroethylene—(PTFE) Coated Glass Fabric

Standard Specification for Polytetrafluoroethylene—(PTFE) Coated Glass Fabric

SCOPE
1.1 This specification covers glass fabric impregnated, coated, and sintered on both sides with PTFE to a nominal thickness of 0.318 mm (0.015 in.) or less.
1.2 The PTFE-coated glass fabric is for electrical, chemical, and mechanical uses.
1.3 The PTFE-coated glass fabric of this specification does not pertain to structural fabric, single-sided PTFE coatings, or materials used for laminates.
1.4 The values stated in SI units as detailed in IEEE/ASTM SI-10.
Note 1—There is no ISO standard that covers information included in this specification. A few of these test methods are mentioned in ISO 12086-2: 1995.

General Information

Status
Historical
Publication Date
09-Dec-2002
ICS
59.080.40 - Coated fabrics
Technical Committee
D20 - Plastics
Drafting Committee
D20.15 - Thermoplastic Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D4969-97 - Standard Specification for Polytetrafluoroethylene-(PTFE) Coated Glass Fabric
Effective Date
10-Dec-2002
Replaced By
ASTM D4969-07 - Standard Specification for Polytetrafluoroethylene-(PTFE) Coated Glass Fabric
Effective Date
01-Mar-2007

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ASTM D4969-02 - Standard Specification for Polytetrafluoroethylene—(PTFE) Coated Glass FabricASTM D4969-02 - Standard Specification for Polytetrafluoroethylene—(PTFE) Coated Glass Fabric
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ASTM D4969-02 - Standard Specification for Polytetrafluoroethylene—(PTFE) Coated Glass Fabric
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 4969 – 02
Standard Specification for
1
Polytetrafluoroethylene–(PTFE) Coated Glass Fabric
This standard is issued under the fixed designation D 4969; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* D 1424 Test Method for Tearing Strength of Fabrics by
Falling-Pendulum Type (Elmendorf) Apparatus
1.1 This specification covers glass fabric impregnated,
D 3892 Practice for Packaging/Packing of Plastics
coated, and sintered on both sides with PTFE to a nominal
D 4441 Specification for Aqueous Dispersions of Polytet-
thickness of 0.318 mm (0.015 in.) or less.
rafluoroethylene
1.2 The PTFE-coated glass fabric is for electrical, chemical,
IEEE/ASTM SI-10 Standard for Use of the International
and mechanical uses.
4
System of Units (SI): The Modern Metric System
1.3 The PTFE-coated glass fabric of this specification does
5
2.2 ISO Standard:
not pertain to structural fabric, single-sided PTFE coatings, or
ISO 12086-2: 1995 Plastics—Fluoropolymer Dispersions
materials used for laminates.
and Moulding and Extrusion Materials—Part 2: Prepara-
1.4 The values stated in SI units as detailed in IEEE/ASTM
tion of Test Specimens and Determination of Properties
SI-10.
NOTE 1—There is no ISO standard that covers information included in 3. Terminology
this specification. A few of these test methods are mentioned in
3.1 Definitions—Definitions of terms relating to plastics
ISO 12086-2: 1995.
used in this specification shall be in accordance with Defini-
tionsD 883.Definitionsoftermsrelatingtotextilesusedinthis
2. Referenced Documents
specification shall be in accordance with Terminology D 123.
2
2.1 ASTM Standards:
3.1.1 structural fabric—PTFE-coated fabric to a thickness
D 123 Terminology Relating to Textile Materials
of greater than 0.381 mm (0.015 in.).
D 149 Test Methods for Dielectric Breakdown Voltage and
3.1.2 lot, n—one production run or a uniform blend of two
Dielectric Strength of Solid Electrical Insulating Materials
or more production runs.
at Commercial Power Frequencies
D 257 Test Methods for D-C Resistance or Conductance of
4. Classification
Insulating Materials
4.1 There shall be six types of PTFE-coated glass fabrics as
D 374 Test Methods for Thickness of Solid Electrical Insu-
described in Table 1.
lation
4.2 Use a one-line system to specify materials covered by
D 578 Specification for Glass Fiber Yarns
this specification. The system uses redefined cells to refer to
D 579 Specification for Greige Woven Glass Fabrics
specific aspects of this specification, as illustrated below as
D 618 Method for Conditioning Plastics for Testing
follows.
D 737 Test Method for Air Permeability of Textile Fabrics
Specification
D 751 Test Methods for Coated Fabrics
Standard Number Type Grade Class Special
3
D 827 Method of Test for Edge Tearing Strength of Paper
Block Notes
Example: ASTM D4969-XX IV – – ,
D 883 Definitions of Terms Relating to Plastics
D 902 Methods of Testing Flexible Resin-Coated Glass
For this example, the line call out would be: ASTM D
Fabric and Glass Fabric Tapes Used for Electrical Insula-
4969 – XX, IV– – , Porosity 15–30 CFM, and would specify a
tion
Type IV porous product which is referenced inTable 1 with no
grade or class since these subcategories do not appear in this
specification. A comma is used as the separator between the
1
This specification is under the jurisdiction of Committee D20 on Plastics and is
standard number and the type. Separators are not needed
the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials.
between the type, grade, and class because they are, in turn,
Current edition approved December 10, 2002. Published February 2003. Origi-
nally approved in 1989. Last previous edition approved in 1997 as D 4969 – 97.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from ASTM International, 100 Barr Harbor Drive, West Consho-
Standards volume information, refer to the standard’s Document Summary page on hocken, PA 19428
5
the ASTM website. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
3
Withdrawn. 4th Floor, New York, NY 10036.
*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 ----------------------
D4969–02
TABLE 1 PTFE-Coated Glass Fabric Types
Type Name General Description and Common Application
I Premium Smooth, defect-free, primarily used as a diel
...

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4.1 Fabrics intended for this end-use should meet all the requirements listed in Table 1. (A) There is more than one standard test method that can be used to measure breaking strength, tongue tear strength, and lightfastness. These test methods cannot be used interchangeably since there may be no overall correlation between them (see Note 2).(B) grade in b and c is based on a numerical scale of 5 for negligible color transfer or color change to 1 for very severe color transfer or color change. The numerical rating in Table 1 or higher is acceptable.(C) AATCC 9–Step Chromatic Transference Scale.(D) AATCC Gray Scale for Color Change.  
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1.1 This performance specification covers performance requirements for vinyl-coated and urethane-coated upholstery fabrics produced with woven, knit, or nonwoven substrates which are used in the manufacture of new indoor furniture.  
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ASTM D2724-19(Test Method)
Standard Test Method for Bond Strength of Bonded, Fused, and Laminated Apparel Fabrics

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5.1 This test method for the determination of bond strength of bonded, fused, or laminated apparel fabrics, is considered satisfactory for acceptance testing of commercial shipments of bonded and laminated apparel fabrics.  
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use the samples for such a comparative test that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing. Randomly assign specimens in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data and a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.
SCOPE
1.1 This test method covers procedures for characterizing the bond strength of bonded, fused, and laminated apparel fabrics before or after drycleaning and laundering.  
1.2 The values stated in SI units are to be regarded as standard; the values in parentheses are provided as information only.  
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ASTM F2153-07(2018)(Test Method)
Standard Test Method for Measurement of Backpack Capacity

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4.1 Many consumers use the capacity measurement as a key specification to determine the backpack size suitable for their requirements.
SCOPE
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1.2 This test method is designed to provide a means whereby manufacturers and consumers may have a consistent means to compare pack volumes.  
1.3 This test method does not take into consideration areas of the backpack that are not completely enclosed by fabric such as mesh pockets, water bottle holders, and compressor pockets.  
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Standard Test Methods for Coated and Laminated Fabrics for Architectural Use

SIGNIFICANCE AND USE
5.1 The procedures in this standard can be used for acceptance testing of commercial shipments of coated and laminated fabrics for architectural use since these test methods have been used extensively in the trade for acceptance testing. Caution is advised, however, when testing adhesion of coating to fabric and breaking strength after crease fold because between laboratory precision is known to be poor (see 24.2). For these cases, comparative tests conducted, as directed in 5.1.1, may be advisable.  
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SCOPE
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1.2 These methods can be used for most fiber-based, coated and laminated architectural fabrics.  
1.3 This standard includes the following sections that provide test procedures for coated and laminated architectural fabrics:    
Section  
Fabric Count  
8  
Mass per Unit Area  
9  
Fabric Thickness  
10  
Fabric Width  
11  
Fabric Length  
12  
Fabric Bow  
13  
Adhesion of Coating to Fabric  
14  
Uniaxial Elongation Under Static Load  
15  
Fabric Breaking Force  
16  
Breaking Strength After Crease Fold  
17  
Elongation at Break  
18  
Fabric Trapezoid Tear Force  
19  
Resistance to Accelerated Weathering  
20  
Solar Optical Properties  
21  
Fabric Flame Resistance  
22  
Noise Reduction Coefficient  
23  
1.4 These test methods include only testing procedures and do not include specifications or tolerances. They are intended as a guide for specifications. Any of these methods may be used in material specifications to evaluate requirements for a specific end use as related to a particular job.  
1.5 The values stated in either SI or inch-pound units are to regarded separately as the standard. Within the text, the inch-pound units are shown in parentheses. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.  
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in 14.1, A1.3.3.1, A2.3.3.1, and A3.3.3.1.  
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