ASTM D3774-96(2004)
(Test Method)Standard Test Methods for Width of Textile Fabric
Standard Test Methods for Width of Textile Fabric
SIGNIFICANCE AND USE
Option A procedures of Test Method D 3774 for width are considered satisfactory for acceptance testing of commercial shipments because they are used extensively in the trade.
5.1.1 In case of a dispute arising from differences in reported test values when using Test Method D 3774 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student’t-test for unpaired data and an acceptable probability level chosen by the two parties before testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of the known bias.
SCOPE
1.1 This test method covers the measurement of the width of fabrics, pile or napped surface width, or both. The method is applicable to full rolls, bolts of fabric, and short specimens removed from a roll or bolt. Unless otherwise specified, measurements shall include the selvages when present.
1.2 The method offers two options:
1.2.1 Option AFull Roll or Bolt.
1.2.2 Option BShort Specimen Removed from Full Roll or Bolt.
1.3 The values stated in either SI units or U.S. customary units are to be regarded as standard. The U.S. customary units may be approximate.
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.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D3774–96(Reapproved 2004)
Standard Test Method for
Width of Textile Fabric
This standard is issued under the fixed designation D 3774; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3.1.1 width, n—of a fabric, the distance from the outer edge
of one selvage to the outer edge of the other selvage, measured
1.1 Thistestmethodcoversthemeasurementofthewidthof
perpendicular to the selvages while the fabric is held under
fabrics, pile or napped surface width, or both. The method is
zero tension and is free of folds and wrinkles.
applicable to full rolls, bolts of fabric, and short specimens
3.1.2 width, n—of a raised-surface fabric, the dimension
removed from a roll or bolt. Unless otherwise specified,
included within the outer limits of the nap or pile, but
measurements shall include the selvages when present.
excluding the selvages, or as otherwise agreed upon by the
1.2 The method offers two options:
purchaser and supplier.
1.2.1 Option A—Full Roll or Bolt.
3.1.3 width, n—of a fabric woven on a shuttleless loom, the
1.2.2 Option B—Short Specimen Removed from Full Roll
distance from the outer warp on one side to the outer warp on
or Bolt.
the other side, measured perpendicular to the warp yarns while
1.3 The values stated in either SI units or U.S. customary
the fabric is held under zero tension and is free of folds and
units are to be regarded as standard. The U.S. customary units
wrinkles.
may be approximate.
3.1.4 For definitions of other textile terms used in this test
1.4 This standard does not purport to address all of the
method, refer to Terminology D 123.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Summary of Test Method
priate safety and health practices and determine the applica-
4.1 The width of the fabric is measured directly by using a
bility of regulatory limitations prior to use.
metal rule.
2. Referenced Documents 4.2 Option A offers two procedures for the measurement of
fabric width, or pile width or napped surface width, or both, in
2.1 ASTM Standards:
full rolls or bolts. The first procedure is essentially a tension-
D 123 Terminology Relating to Textiles
free method, the second procedure provides for measurements
D 1776 Practice for Conditioning Textiles for Testing
made during finishing or inspection operations that may impart
2.2 Other Standard:
tension to the fabric.
ANSI/ASQC Z1.4—Inspection by Attributes
4.3 Option B covers the measurement of fabric width, pile
3. Terminology
surface width or napped surface width, or both, when only a
short length of fabric is available for testing. This procedure is
3.1 Definitions:
applicable when a small swatch of fabric is sent to the
laboratory to be used as the test specimen.
These test methods are under the jurisdiction of ASTM Committee D13 on
5. Significance and Use
Textiles and are the direct responsibility of Subcommittee D13.60 on Fabric Test
5.1 Option A procedures of Test Method D 3774 for width
Methods, Specific.
Current edition approved Dec. 1, 2004. Published January 2005. Replaces
are considered satisfactory for acceptance testing of commer-
Sections 13 to 17 of Methods D 1910 – 89, Test for Construction Characteristics of
cial shipments because they are used extensively in the trade.
Woven Fabrics. Originally approved in 1996. Last previous edition approved in
5.1.1 In case of a dispute arising from differences in
1996 as D 3774–96.
reported test values when using Test Method D 3774 for
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
acceptance testing of commercial shipments, the purchaser and
Standards volume information, refer to the standard’s Document Summary page on
the supplier should conduct comparative tests to determine if
the ASTM website.
there is a statistical bias between their laboratories. Competent
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036 statistical assistance is recommended for the investigation of
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D3774–96 (2004)
bias.As a minimum, the two parties should take a group of test average of all measurements to the nearest 1 mm ( ⁄16) in.
specimens which are as homogeneous as possible and which Record the minimum and maximum values for each roll and
are from a lot of material of the type in question. The test for the lot.
specimens should then be randomly assigned in equal numbers 9.2.2 Running Under Tension—When agreed upon by all
to each laboratory for testing.The average results from the two parties concerned, take five measurements of width to the
laboratories should be compared using Student’s t-test for nearest 1 mm ( ⁄16 in.) at any convenient time during the
unpaireddataandanacceptableprobabilitylevelchosenbythe finishing or inspection operations using the measuring device.
two parties before testing is begun. If a bias is found, either its Make no measurement within1m(1yd)ofthe ends of the roll
cause must be found and corrected or the purchaser and the or bolt. When specified, measurements of width of pile or
supplier must agree to interpret future test results in the light of napped surfaces may be made at the same time. Calculate and
the known bias. record the average of all measurements to the nearest 1 mm
( ⁄16) in. Record the minimum and maximum values for each
6. Apparatus
roll and for the lot.
9.3 Option B—Laboratory Sample Removed From Full
6.1 Measuring device, metre (yard) stick or steel tape
1 Roll or Bolt:
having 1-mm ( ⁄16-in.) graduations and a length that is greater
9.3.1 Lay the fabric on a smooth horizontal surface without
than the width of fabric to be measured.
tension in any direction and free of wrinkles or distortion.
Measurethewidthofthefabricasdefinedin3.1.1,3.1.2,3.1.3,
7. Sampling
or 3.1.4 at three or more points separated by at least 0.3 m (1
7.1 As a lot sample for acceptance testing, take at random
ft) along the length of the fabric. Do not make measurements
the number of rolls of fabric as directed in an applicable
closer than 150 mm (6 in.) to the cut ends. Calculate the
material specification or other agreement between the pur-
average of all measurements on the specimen to the nearest 1
chaser and the supplier.
mm ( ⁄16 in.). Record the average measurement, the maximum
7.2 For Option A, consider rolls of fabric to be the primary
measurement, and the minimum measurement.
sampling uni
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