ASTM D1284-87
(Test Method)Methods of Test for Relaxation and Consolidation Dimensional Changes of Stabilized Knit Wool Fabrics (Withdrawn 1989)
Methods of Test for Relaxation and Consolidation Dimensional Changes of Stabilized Knit Wool Fabrics (Withdrawn 1989)
General Information
Standards Content (Sample)
ASTM D32ôLi ô7 B 0757530 0023337 b
fl-37-m
Designation: D 1284 - 87
I AMERICAN SOCIETY FOR TESTING APO MATERIALS
1916 Race St., Philadelphia, Pa. 19103
Reprinted from the Annual Book of ASTM Standards, Copyright ASTM
If not listed In the current combined index, will appear in the next editio?.
Standard Test Methods for
RELAXATION AND CONSOLIDATION DIMENSIONAL CHANGES
OF STABILIZED KNIT WOOL FABRICS’
This standard is issued under the fixed designation D 1284; 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.
Woven of Knitted Wool Textiles’
1. Scope
IS0 Method 3812 NI00 Dimensional Change
1.1 These test methods cover the accelerated
in Wetting5
determination of the relaxation and the consoli-
dation dimensional change of knit fabrics that
3. Definitions
include at least 50 % wool, and are designed to
3.1 consolidation dimensional change, n-the
be shrink-resistant. The knit fabrics to be tested
dimensional change that occurs when a knitted
by these methodsinclude those used in manufac-
fabric is gently agitated in water to overcome all
turing underwear, outerwear, and sweaters.
the frictional constraints in the fabric after it has
1.2 The methods appear in the following sec-
been immersed in water without agitation to
tions:
cause the relaxation dimensional change.
Sections
3.2 felting dimensional chlange, n-the irre-
Relaxation Dimensional Change 6 to 13
versible dimensional change that occurs in a
Consolidation Dimensional Change 14 to 21
relaxed fabric when it is subjected to agitation in
1.3 The values stated in SI units are to be
laundering as specified in Test Method D 1905.
regarded as the standard.
3.3 frictional constraint, n-the force imposed
i .4 This standard may involve hazardous ma-
by the multitude of fiber to fiber contacts within
terials, operations, and equipment. This standard
a fabric.
does not purport to address all of the safetyprob-
3.4 relaxation dimensional change, n-the di-
lems associated with its use. It is the responsibil-
mensional change that occurs when a knitted
ity of the user of this standard to establish appro-
fabric is immersed in water without agitation and
priate safety and health practices and determine
the strains and tensions put into fibers, yams, or
the applicability of regulatory limitations prior to
fabrics during previous processing stages such as
use.
spinning, knitting, and finishing are relieved.
3.5 For definitions of other textile terms used
2. Referenced Documents
in these test methods, refer to Terminology
2.1 ASTM Standards:
D 123.
D 123 Terminology Relating to Textiles2
‘These test methods are under the jurisdiction of ASTM
D 1776 Practice for Conditioning Textiles for
Committee D-13 on Textiles, and are the direct responsibility
Testing* of Subcommittee D13.59 on Fabric Test Methods, General.
Current edition approved July 31, 1987. Published Septem-
D 1905 Test Method for Dimensional Changes
ber 1987. Originally published as D 1284 - 53 T. Last previous
in Laundering of Woven or Knitted
editionD l284-76(1981).
2Aiinual Book ofASTMStandards, Vols 07.01 and 07.02.
Textiles3
see 1977 Annual Book ofASTMStandards,
’Discontinued,
2.2 Other Documents:
Part 32.
Fed. Std. No. 75 la Stitches, Seams, and Sew- ‘Fed. Std. No. 751a, Jan. 25, 1965, superseding Federal
Specification DD-S-75 I. Available from Naval Publications and
ing4
Forms Center, 5801 Tabor Ave., PA 19120.
IS0 Method 38/2 N79 Dimensional Changes
Available from Amencan National Standards Institute,
1430 Broadway, New York, NY 10018.
(Shrinkage), Felting and Relaxation, of
---------------------- Page: 1 ----------------------
ASTM DI284 87 a
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__
-4m
4. Summary of Test Methods oratory precision is poor. In some cases, the
purchaser and the supplier might have to test
4.1 Summaries of the specific test methods
specific commercial shipments by the best avail-
used for the different tests are given in the appro-
able method, even though the method has not
priate sections.
been recommended for acceptance testing of
5. Uses and Significance commercial shipments. In such a case, there may
be a difference in values reported by the pur-
5.1 Dimensional changes in laundering may
chaser and the supplier. The statistical bias be-
be objectionable to the uItimate consumer of a
tween the results reported by the laboratory of
garment, but the user is not likely to be interested
the purchaser and the laboratory of the supplier
in any scheme for dividing dimensional change
should be determined by testing specimens ran-
into components according to their origin. How-
domly drawn from one sample of the fabric being
ever, such an analysis will be inv
...
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