ASTM D3774-96(2008)e2
(Test Method)Standard Test Method for Width of Textile Fabric
Standard Test Method for Width of Textile Fabric
SIGNIFICANCE AND USE
Option A procedures of Test Method D3774 for width are considered satisfactory for acceptance testing of commercial shipments because they are used extensively in the trade.
In case of a dispute arising from differences in reported test values when using Test Method D3774 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's 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 A—Full Roll or Bolt.
1.2.2 Option B—Short 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.
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.
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Designation:D3774–96 (Reapproved 2008)
Standard Test Method for
Width of Textile Fabric
This standard is issued under the fixed designation D3774; 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 Department of Defense.
´ NOTE—Minor editorial changes were made in October 2008.
´ NOTE—Section 3 was updated editorially in September 2011 in accordance with the Committee D13 Terminology policy.
1. Scope 3. Terminology
1.1 Thistestmethodcoversthemeasurementofthewidthof 3.1 The following terms are relevant to this standard: width,
fabrics, pile or napped surface width, or both. The method is of a fabric; width, of a raised-surface fabric; width, of a fabric
applicable to full rolls, bolts of fabric, and short specimens woven on a shuttleless loom.
removed from a roll or bolt. Unless otherwise specified, 3.2 FordefinitionsofallothertextiletermsseeTerminology
measurements shall include the selvages when present. D123.
1.2 The method offers two options:
4. Summary of Test Method
1.2.1 Option A—Full Roll or Bolt.
4.1 The width of the fabric is measured directly by using a
1.2.2 Option B—Short Specimen Removed from Full Roll
or Bolt. metal rule.
4.2 Option A offers two procedures for the measurement of
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 fabric width, or pile width or napped surface width, or both, in
full rolls or bolts. The first procedure is essentially a tension-
may be approximate.
1.4 This standard does not purport to address all of the free method, the second procedure provides for measurements
made during finishing or inspection operations that may impart
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- tension to the fabric.
4.3 Option B covers the measurement of fabric width, pile
priate safety and health practices and determine the applica-
surface width or napped surface width, or both, when only a
bility of regulatory limitations prior to use.
short length of fabric is available for testing. This procedure is
2. Referenced Documents
applicable when a small swatch of fabric is sent to the
2.1 ASTM Standards: laboratory to be used as the test specimen.
D123 Terminology Relating to Textiles
5. Significance and Use
D1776 Practice for Conditioning and Testing Textiles
2.2 Other Standard: 5.1 Option A procedures of Test Method D3774 for width
are considered satisfactory for acceptance testing of commer-
ANSI/ASQC Z1.4—Inspection by Attributes
cial shipments because they are used extensively in the trade.
5.1.1 In case of a dispute arising from differences in
This test method are under the jurisdiction of ASTM Committee D13 on
reported test values when using Test Method D3774 for
Textiles and are the direct responsibility of Subcommittee D13.60 on Fabric Test
acceptance testing of commercial shipments, the purchaser and
Methods, Specific.
Current edition approved July 1, 2008. Published October 2008. Replaces
the supplier should conduct comparative tests to determine if
Sections 13 to 17 of Methods D1910 – 89, Test for Construction Characteristics of
there is a statistical bias between their laboratories. Competent
Woven Fabrics. Originally approved in 1996. Last previous edition approved in
statistical assistance is recommended for the investigation of
2004 as D3774–96(2004). DOI: 10.1520/D3774-96R08E02.
bias.As a minimum, the two parties should take a group of test
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
specimens which are as homogeneous as possible and which
Standards volume information, refer to the standard’s Document Summary page on
are from a lot of material of the type in question. The test
the ASTM website.
specimens should then be randomly assigned in equal numbers
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. to each laboratory for testing.The average results from the two
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D3774–96 (2008)
laboratories should be compared using Student’s t-test for Make no measurement within1m(1yd)ofthe ends of the roll
unpaireddataandanacceptableprobabilitylevelchosenbythe or bolt. When specified, measurements of width of pile or
two parties before testing is begun. If a bias is found, either its napped surfaces may be made at the same time. Calculate and
cause must be found and corrected or the purchaser and the record the average of all measurements to the nearest 1 mm
supplier must agree to interpret future test results in the light of ( ⁄16) in. Record the minimum and maximum values for each
the known bias. roll and for the lot.
9.3 Option B—Laboratory Sample Removed From Full
6. Apparatus
Roll or Bolt:
6.1 Measuring device, metre (yard) stick or steel tape 9.3.1 Lay the fabric on a smooth horizontal surface without
having 1-mm ( ⁄16-in.) graduations and a length that is greater
tension in any direction and free of wrinkles or distortion.
than the width of fabric to be measured. Measure the width of the fabric as defined in,,,or 3.1 at three
or more points separated by at least 0.3 m (1 ft) along the
7. Sampling
length of the fabric. Do not make measurements closer than
7.1 As a lot sample for acceptance testing, take at random
150 mm (6 in.) to the cut ends. Calculate the average of all
the number of rolls of fabric as directed in an applicable
measurements on the specimen to the nearest 1 mm ( ⁄16 in.).
material specification or other agreement between the pur-
Record the average measurement, the maximum measurement,
chaser and the supplier.
and the minimum measurement.
7.2 For Option A, consider rolls of fabric to be the primary
10. Report
sampling units. Consider the rolls of fabric in the lot sample as
the laboratory sample and the points at which measurements
10.1 State that the specimen was tested as directed in Test
are made within the rolls as test specimens.
Method D3774. Describe the material or product sampled and
7.3 For Option B, cut a full width swatch at least2m(2yd)
the source of each specimen.
long from each lot sampling unit as a laboratory sampling unit,
10.2 Report the following information:
taking care that the weave is not distorted within the swatches.
10.2.1 Option used and if tension was used in Option A.
Consider the points at wh
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