Standard Test Method for Wale and Course Count of Weft Knitted Fabrics

SIGNIFICANCE AND USE
5.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them using competent statistical assistance. As a minimum, ensure that the test samples to be used are as homogeneous as possible and drawn from the material from which the disparate test results were obtained. The test specimens are to be randomly assigned in equal numbers to each laboratory for testing. The test results from the participating laboratories should be compared using a statistical test for unpaired data to a probability level chosen before initiation of the testing. If a bias is found, either its cause shall be found and corrected, or future test results for that material shall be adjusted in consideration of the known bias.  
5.2 The results obtained by this test method may be used to determine if fabrics meet the tolerances for fabric counts given in Specification D3887.
SCOPE
1.1 This test method covers the measurement of wale and course counts of weft knitted fabrics. Weft knit fabrics are made on circular or flat-bed knitting machines and include single- as well as double-knit fabric categories. Typical fabrics in the single-knit category include jersey and single-pique; typical fabrics in the double-knit category are rib, interlock, and swiss pique.  
1.2 This test method is not applicable to warp knit fabrics such as tricot or raschel.  
1.3 Wale and course counts are to be reported separately.  
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.5 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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Publication Date
30-Jun-2015
Technical Committee
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ASTM D8007-15 - Standard Test Method for Wale and Course Count of Weft Knitted Fabrics
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D8007 − 15
StandardTest Method for
1
Wale and Course Count of Weft Knitted Fabrics
This standard is issued under the fixed designation D8007; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 The following terms are relevant to this test method:
count-in knitted fabrics, course-in knitted fabrics, knitted
1.1 This test method covers the measurement of wale and
fabric, and wale-in knitted fabrics.
course counts of weft knitted fabrics. Weft knit fabrics are
made on circular or flat-bed knitting machines and include 3.3 For definitions of other textile terms used in this test
single- as well as double-knit fabric categories.Typical fabrics method, refer to Terminology D123.
in the single-knit category include jersey and single-pique;
4. Summary of Test Method
typical fabrics in the double-knit category are rib, interlock,
and swiss pique.
4.1 Thenumberofwalesandthenumberofcoursesperunit
distance of a knitted fabric are counted using a suitable ruler,
1.2 This test method is not applicable to warp knit fabrics
magnifyingdevice,ordigitalcamerasystem.Foranillustration
such as tricot or raschel.
of a simple knitted fabric wale and course orientation, see Fig.
1.3 Wale and course counts are to be reported separately.
1.
1.4 The values stated in inch-pound units are to be regarded
5. Significance and Use
asthestandard.Thevaluesgiveninparenthesesaremathemati-
cal conversions to SI units that are provided for information
5.1 If there are differences of practical significance between
only and are not considered standard.
reported test results for two laboratories (or more), compara-
tive tests should be performed to determine if there is a
1.5 This standard does not purport to address all of the
statistical bias between them using competent statistical assis-
safety concerns, if any, associated with its use. It is the
tance. As a minimum, ensure that the test samples to be used
responsibility of the user of this standard to establish appro-
are as homogeneous as possible and drawn from the material
priate safety and health practices and determine the applica-
from which the disparate test results were obtained. The test
bility of regulatory limitations prior to use.
specimens are to be randomly assigned in equal numbers to
each laboratory for testing. The test results from the partici-
2. Referenced Documents
pating laboratories should be compared using a statistical test
2.1 ASTM Standards:
for unpaired data to a probability level chosen before initiation
D123Terminology Relating to Textiles
of the testing. If a bias is found, either its cause shall be found
D1776Practice for Conditioning and Testing Textiles
and corrected, or future test results for that material shall be
D3887Specification for Tolerances for Knitted Fabrics
adjusted in consideration of the known bias.
D4850Terminology Relating to Fabrics and Fabric Test
5.2 The results obtained by this test method may be used to
Methods
determineiffabricsmeetthetolerancesforfabriccountsgiven
E177Practice for Use of the Terms Precision and Bias in
in Specification D3887.
ASTM Test Methods
E691Practice for Conducting an Interlaboratory Study to
6. Apparatus
Determine the Precision of a Test Method
6.1 Use any suitable device, such as a pick glass, ruler,
3. Terminology
microscope, or digital camera system that will allow counting
by unit distance.
3.1 For terminology related to fabrics, see Terminology
D4850.
6.2 The use of a stylus, pointer, or pick needle is recom-
mended when using a pick glass, ruler, or if the microscope
does not have a micrometer.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD13onTextiles
and is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods, 7. Sampling
General.
7.1 LotSample—Asalotsampleforacceptancetesting,take
Current edition approved July 1, 2015. Published September 2015. DOI:
10.1520/D8007-15. at random the number of rolls of fabric as directed in an
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D8007 − 15
FIG. 1 Wale and Course Orientation in Single Knitted Fabric
Courtesy of Cotton Incorporated, Cary, NC, Circular Knitting Science Intermediate Workshop Notebook and The Art of Knitting: An Interactive Guide to the Basics of
Knitting educational CD, www.cottoninc.com.
applicable material specification or other agreement between testing. Such results may not correspond with the results
thepurchaserandthesupplier.Considerrollsoffabrictobethe obtained when t
...

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