ASTM D3773-90(1996)e1
(Test Method)Standard Test Methods for Length of Woven Fabric
Standard Test Methods for Length of Woven Fabric
SCOPE
1.1 These test methods cover four options for measuring fabric length and are applicable to full rolls or bolts of materials.
1.2 There are four approved options of measuring length as follows:
1.2.1 Option A -Hand (Section 6).
1.2.2 Option B -Drum (Section 7).
1.2.3 Option C -Clock (Section 8).
1.2.4 Option D -Folding (Section 9).
1.3 The values stated in either SI units or in other units shall be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way.
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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: D 3773 – 90 (Reapproved 1996)
Standard Test Methods for
Length of Woven Fabric
This standard is issued under the fixed designation D 3773; 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.
e NOTE—Editorial changes were made throughout in April 1996.
1. Scope used in these test methods is a fabric that does not change
significantly with multiple passes through measuring devices.
1.1 These test methods cover four options for measuring
3.1.3 woven fabric, n—a structure produced when at least
fabric length and are applicable to full rolls or bolts of
two sets of strands are interlaced, usually at right angles to each
materials.
other, according to a predetermined pattern of interlacing, and
1.2 There are four approved options of measuring length as
such that at least one set is parallel to the axis along the
follows:
lengthwise direction of the fabric.
1.2.1 Option A—Hand (Section 6).
3.1.4 For definitions of other textile terms used in these test
1.2.2 Option B—Drum (Section 7).
methods, refer to Terminology D 123.
1.2.3 Option C—Clock (Section 8).
1.2.4 Option D—Folding (Section 9).
4. Summary of Test Methods
1.3 The values stated in either SI units or in other units shall
4.1 The length is measured from one end of the fabric to the
be regarded separately as standard. The values stated in each
other, using a suitable graduated device, or apparatus as
system may not be exact equivalents; therefore, each system
described in the option used.
must be used independently of the other, without combining
values in any way.
5. Conditioning
1.4 This standard does not purport to address all of the
5.1 Condition the specimens as directed in Practice D 1776.
safety concerns, if any, associated with its use. It is the
5.2 When full rolls or bolts of fabric cannot be properly
responsibility of the user of this standard to establish appro-
conditioned in a reasonable time with available facilities,
priate safety and health practices and determine the applica-
2 perform the tests without conditioning and report the actual
bility of regulatory limitations prior to use.
conditions prevailing at the time of the test. Such results may
2. Referenced Documents not correspond with the results obtained after testing in the
standard atmosphere for testing textiles.
2.1 ASTM Standards:
D 123 Terminology Relating to Textiles
6. Option A—Hand
D 1776 Practice for Conditioning Textiles for Testing
6.1 Significance and Use—The hand method specifies that
3. Terminology the length of a fabric be measured in a relaxed tension-free
manner. This test method is the referee method to which all
3.1 Definitions:
other test methods shall be compared for the establishment of
3.1.1 length, n—of a fabric, the distance from one end of a
their accuracy. This test method can be used for acceptance
fabric to the other, measured parallel to the side edge of the
testing, although it is not used as a general practice because it
fabric while the fabric is under zero tension and is free of folds
is too time consuming.
or wrinkles.
6.1.1 In case of a dispute arising from differences in
3.1.2 stable fabric, n—a textile fabric in which the dimen-
reported test values when using Test Methods D 3773 for
sions do not change significantly during processing or use.
acceptance testing of commercial shipments, the purchaser and
3.1.2.1 Discussion—A stable fabric as defined above and as
supplier should conduct comparative tests to determine if there
is a statistical bias between their laboratories. Competent
These test methods are under the jurisdiction of ASTM Committee D-13 on
statistical assistance is recommended for the investigation of
Textiles and are the direct responsibility of Subcommittee D13.60 on Fabric Test
bias. As a minimum, the two parties should take a group of test
Methods, Specific.
specimens which are as homogeneous as possible and which
Current edition approved Jan. 26, 1990. Published May 1990. Originally
published as D 3773 – 89. Last previous edition D 3773 – 89. Replaces Sections 6 are from a lot of material of the type in question. The test
to 12 of Methods D 1910 – 64 (1975), Test for Construction Characteristics of
specimens should then be randomly assigned in equal numbers
Woven Fabrics.
to each laboratory for testing. The average results from the two
Annual Book of ASTM Standards, Vol 07.02.
laboratories should be compared using Student’s t-test for
Annual Book of ASTM Standards, Vol 07.01.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 3773
unpaired data and an acceptable probability level chosen by the for measuring the length of a fabric for the purpose of
two parties before testing is begun. If a bias is found, either its acceptance testing, provided the user’s laboratory verifies for
cause must be found and corrected or the purchaser and the the specific weave and construction of interest that results
supplier must agree to interpret future test results in the light of obtained by this test method agree within 6 0.5 % of those
the known bias. obtained by the hand method. Use the device on any machine
6.2 Apparatus: equipped to handle continuous lengths of fabric. In cases of
6.2.1 Flat Horizontal Surface, at least3m(3yd) long and dispute, the hand option shall be used.
having a width equal to or greater than the widest fabric to be 8.2 Apparatus:
measured. 8.2.1 Measuring Device, consisting of a pair of identical
6.2.2 Length-Measuring Device, metal rule or steel tape,1 wheels, mounted 75 to 100 mm (3 to 4 in.) apart on a
m (1 yd) minimum length graduated in 1 mm ( ⁄16 in.) units, free-running common axle connected to a counting mechanism
and graduated to read in metres or decimetres (yards and eighths of
6.2.3 Pins, suitable for use as markers. a yard). The surfaces of the wheels are approxim
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.