Standard Test Methods for Mass Per Unit Area (Weight) of Fabric

ABSTRACT
These test methods cover the measurement of fabric mass per unit area (weight) and is applicable to most fabrics. There are four approved options in the measurement of fabric mass per unit area: Option A, Option B, Option C, and Option D. Option A may be used for acceptance testing of commercial shipments since it has been used extensively in the trade. The second option is Option B which is applicable to a full-width sample cut from a full piece, roll, bolt, or cut. Unless otherwise specified, these results will include selvages and will be on the basis of conditioned fabric. Option C on the other hand is applicable when a small swatch of fabric is sent to the laboratory to be used as the test specimen. The results are considered to be applicable to the sample only and not necessarily to the lot from which the sample was taken. Measurements by this method do not include selvages and should be reported as such, unless a selvage allowance is specified. The last option is Option D which is intended for use with narrow fabrics as so designated by the trade.
SCOPE
1.1 These test methods cover the measurement of fabric mass per unit area (weight) and is applicable to most fabrics.  
1.2 There are four approved options:  
1.2.1 Option A—Full Piece, Roll, Bolt or Cut (Section 7).  
1.2.2 Option B—Full Width Sample (Section 8).  
1.2.3 Option C—Small Swatch of Fabric (Section 9).  
1.2.4 Option D—Narrow Fabrics (Section 10).  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 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.  
1.5 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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Standards Content (Sample)

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: D3776/D3776M − 09a (Reapproved 2017)
Standard Test Methods for
1
Mass Per Unit Area (Weight) of Fabric
This standard is issued under the fixed designation D3776/D3776M; 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 D3774 Test Method for Width of Textile Fabric
2.2 Other Standard:
1.1 These test methods cover the measurement of fabric
3
ANSI/ASQC Z1.4 Inspection by Attributes
mass per unit area (weight) and is applicable to most fabrics.
1.2 There are four approved options:
3. Terminology
1.2.1 Option A—Full Piece, Roll, Bolt or Cut (Section 7).
3.1 The following terms are relevant to this standard:
1.2.2 Option B—Full Width Sample (Section 8).
weight.
1.2.3 Option C—Small Swatch of Fabric (Section 9).
1.2.4 Option D—Narrow Fabrics (Section 10).
3.2 FordefinitionsofallothertextiletermsseeTerminology
D123.
1.3 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
4. Summary of Test Methods
each system may not be exact equivalents; therefore, each
4.1 Fabric mass is calculated from the mass of a specimen
system shall be used independently of the other. Combining
the length and width of which have been measured as directed
values from the two systems may result in non-conformance
in one of the procedures in Test Method D3773 and D3774.
with the standard.
1.4 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Scale, with a capacity and sensitivity sufficient to weigh
responsibility of the user of this standard to establish appro-
the full piece, roll, bolt, or cut units to within 60.1 % of their
priate safety and health practices and determine the applica-
gross mass. The accuracy of the scale should be certified by a
bility of regulatory limitations prior to use.
recognized authority.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5.2 Balance, having a capacity and sensitivity to weigh
ization established in the Decision on Principles for the
within 60.1 % of the mass of the specimens being tested.
Development of International Standards, Guides and Recom-
5.3 Cutting Die, either square or round with an area of at
mendations issued by the World Trade Organization Technical
2 2
least 13 cm or 2 in.
Barriers to Trade (TBT) Committee.
6. Conditioning
2. Referenced Documents
2 6.1 Condition test specimens as directed in Practice D1776.
2.1 ASTM Standards:
6.2 All weighing tests should be made in the standard
D123 Terminology Relating to Textiles
atmosphere for testing textiles (21 6 1°C (70 6 2°F),
D1776 Practice for Conditioning and Testing Textiles
65 6 2 % RH), after the specimens have been conditioned in
D3773 Test Methods for Length of Woven Fabric
the same atmosphere. It may be impractical to condition the
specimens in Option A or nonconditioned testing may be
1
These test methods are under the jurisdiction of ASTM Committee D13 on
agreed upon by the purchaser and supplier. When the full rolls
Textiles and are the direct responsibility of Subcommittee D13.60 on Fabric Test
or bolts of fabric cannot be properly conditioned in a reason-
Methods, Specific.
able time with available facilities, perform the tests without
Current edition approved July 15, 2017. Published August 2017. Replaces
Sections 35 to 41 of Methods D1910 – 64 (1975). Originally approved in 1979. Last
conditioning and report the actual conditions prevailing at the
previous edition approved in 2013 as D3776 – 09a(2013). DOI: 10.1520/D3776_
time of the test. Such results may not correspond with the
D3776M-09AR17.
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
3
Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3776/D3776M − 09a (2017)
resultsobtainedafter testing adequately conditionedspecimens 7.4.3 Calculate the mass per unit area, mass per linear yard,
in the standard atmosphere for testing textiles. or linear yards per pound to three significant figures, unless
otherwisesp
...

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: D3776/D3776M − 09a (Reapproved 2013) D3776/D3776M − 09a (Reapproved
2017)
Standard Test Methods for
1
Mass Per Unit Area (Weight) of Fabric
This standard is issued under the fixed designation D3776/D3776M; 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 These test methods cover the measurement of fabric mass per unit area (weight) and is applicable to most fabrics.
1.2 There are four approved options:
1.2.1 Option A—Full Piece, Roll, Bolt or Cut (Section 7).
1.2.2 Option B—Full Width Sample (Section 8).
1.2.3 Option C—Small Swatch of Fabric (Section 9).
1.2.4 Option D—Narrow Fabrics (Section 10).
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.4 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.
1.5 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:
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
D3773 Test Methods for Length of Woven Fabric
D3774 Test Method for Width of Textile Fabric
2.2 Other Standard:
3
ANSI/ASQC Z1.4 Inspection by Attributes
3. Terminology
3.1 The following terms are relevant to this standard: weight.
3.2 For definitions of all other textile terms see Terminology D123.
4. Summary of Test Methods
4.1 Fabric mass is calculated from the mass of a specimen the length and width of which have been measured as directed in
one of the procedures in Test Method D3773 and D3774.
1
These test methods are under the jurisdiction of ASTM Committee D13 on Textiles and are the direct responsibility of Subcommittee D13.60 on Fabric Test Methods,
Specific.
Current edition approved July 1, 2013July 15, 2017. Published September 2013August 2017. Replaces Sections 35 to 41 of Methods D1910 – 64 (1975). Originally
ε2
approved in 1979. Last previous edition approved in 20092013 as D3776 – 09a .(2013). DOI: 10.1520/D3776_D3776M-09AR13.10.1520/D3776_D3776M-09AR17.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3776/D3776M − 09a (2017)
5. Apparatus
5.1 Scale, with a capacity and sensitivity sufficient to weigh the full piece, roll, bolt, or cut units to within 60.1 % of their gross
mass. The accuracy of the scale should be certified by a recognized authority.
5.2 Balance, having a capacity and sensitivity to weigh within 60.1 % of the mass of the specimens being tested.
2 2
5.3 Cutting Die, either square or round with an area of at least 13 cm or 2 in.
6. Conditioning
6.1 Condition test specimens as directed in Practice D1776.
6.2 All weighing tests should be made in the standard atmosphere for testing textiles (21 6 1°C (70 6 2°F), 65 6 2 % RH),
after the specimens have been conditioned in the same atmosphere. It may be impractical to condition the specimens in Option
A or nonconditioned testing may be agreed upon by the purchaser and supplier. When the full rolls or bolts of fabric cannot be
properly conditioned in a reasonable time with available facilities, perform the tests
...

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