ASTM D3775-07a
(Test Method)Standard Test Method for Warp (End) and Filling (Pick) Count of Woven Fabrics
Standard Test Method for Warp (End) and Filling (Pick) Count of Woven Fabrics
SIGNIFICANCE AND USE
This test method is considered satisfactory for acceptance testing of commercial shipments because it has been used extensively in the trade for that purpose.
If there are differences of practical significance between reported test results for two laboratories (or more), comparative test should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use the samples for such a comparative test that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.
SCOPE
1.1 This test method covers the measurement of warp end count and filling pick count and is applicable to all types of woven fabrics.
Note 1—Historically, the term fabric count has been used to describe the end and pick count of woven fabrics. The terms warp (end) and filling (pick) count are replacing the term fabric count, to provide clarity.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation:D 3775–07a
Standard Test Method for
1
Warp (End) and Filling (Pick) Count of Woven Fabrics
This standard is issued under the fixed designation D 3775; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 For all terminology related to Home Furnishings, refer
to Terminology D 7023.D7023
1.1 This test method covers the measurement of warp end
3.3 For all other terms related to textiles, refer to Terminol-
count and filling pick count and is applicable to all types of
ogy D 123D123.
woven fabrics.
NOTE 1—Historically, the term fabric count has been used to describe 4. Summary of Test Method
the end and pick count of woven fabrics. The terms warp (end) and filling
4.1 The number of warp yarns (ends) per unit distance and
(pick) count are replacing the term fabric count, to provide clarity.
filling yarns (picks) per unit distance are determined using
1.2 The values stated in SI units are to be regarded as the
suitable magnifying and counting devices or by raveling yarns
standard. The values given in parentheses are for information
from fabrics. See ANSI Z1.4.
only.
5. Significance and Use
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.1 This test method is considered satisfactory for accep-
responsibility of the user of this standard to establish appro-
tancetestingofcommercialshipmentsbecauseithasbeenused
priate safety and health practices and determine the applica-
extensively in the trade for that purpose.
bility of regulatory limitations prior to use.
5.1.1 If there are differences of practical significance be-
tween reported test results for two laboratories (or more),
2. Referenced Documents
comparative test should be performed to determine if there is a
2
2.1 ASTM Standards:
statistical bias between them, using competent statistical assis-
D123 Terminology Relating to Textiles
tance. As a minimum, use the samples for such a comparative
D1776 Practice for Conditioning and Testing Textiles
test that are as homogeneous as possible, drawn from the same
D4850 Terminology Relating to Fabrics and Fabric Test
lot of material as the samples that resulted in disparate results
Methods
during initial testing and randomly assigned in equal numbers
D7023 Terminology Relating to Home Furnishings
to each laboratory. The test results from the laboratories
2.2 Other Standard:
involved should be compared using a statistical test for
3
ANSI/ASQC Z1.4—Inspection by Attributes
unpaired data, a probability level chosen prior to the testing
series. If bias is found, either its cause must be found and
3. Terminology
corrected, or future test results for that material must be
3.1 For all terminology related to D13.59, Fabric Test
adjusted in consideration of the known bias.
Methods, General, refer to Terminology D 4850D4850
3.1.1 The following terms are relevant to this standard: 6. Apparatus
count, end, end count, filling, pick, pick count, thread count.
6.1 Use any suitable device, such as pick glass, rule and
thread count
pointer, microfilm reader, or projection equipment.
1
6.2 Use a scale graduated in mm ( ⁄16 in.) to measure the
1
width of the fabric test specimen to be raveled for a count of
This test method is under the jurisdiction of ASTM Committee D13 on Fabric
Test Methods, Specific yarns.
Current edition approved Dec. 1, 2007. Published January 2008 . Replaces
Sections 28 to 34 of Methods D 1910 – 64 (1975). Originally approved in 1979 as
7. Sampling
D 3775 – 79. Last previous edition approved in 2007 as D 3775 – 07.
2
7.1 Lot Sample—As a lot sample for acceptance testing,
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
take at random the number of rolls of fabric as directed in an
Standards volume information, refer tot he standard’s Document Summary page on
applicable material specification or other agreement between
the ASTM website.
thepurchaserandthesupplier.Considerrollsoffabrictobethe
3
Available from American National Standards Institute, 11 W. 42nd St., 13th
primary sampling units.
Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
D 3775–07a
7.2 Laboratory Sample—Asalaboratorysample,takeafull fill
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D 3775–07 Designation:D 3775–07a
Standard Test Method for
1
Warp (End) and Filling (Pick) Count of Woven Fabrics
This standard is issued under the fixed designation D 3775; 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.
1. Scope
1.1 This test method covers the measurement of warp end count and filling pick count and is applicable to all types of woven
fabrics.
NOTE 1—Historically, the term fabric count has been used to describe the end and pick count of woven fabrics. The terms warp (end) and filling (pick)
count are replacing the term fabric count, to provide clarity.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D 123 Terminology Relating to Textiles
D 1776 Practice for Conditioning and Testing Textiles
D 4850 Terminology Relating to Fabric
D 7023 Terminology Relating to Home Furnishings
2.2 Other Standard:
3
ANSI/ASQC Z1.4—Inspection by Attributes
3. Terminology
3.1Definitions:
3.1.1For definitions of textile terms used in this test method; count, end, end count, filling, pick, pick count, and thread count,
refer to Terminology D4850
3.1 For all terminology related to D13.59, Fabric Test Methods, General, refer to Terminology D 4850
3.1.1 Thefollowingtermsarerelevanttothisstandard:count,end,endcount,filling,pick,pickcount,threadcount.threadcount
3.2 For all terminology related to Home Furnishings, refer to Terminology D 7023.
3.3 For all other terms related to textiles, refer to Terminology D 123.
3.1.2For definition of the term thread count, refer to Terminology D7023.
3.1.3For other textile terms used in this test method, refer to Terminology D123.
4. Summary of Test Method
4.1 The number of warp yarns (ends) per unit distance and filling yarns (picks) per unit distance are determined using suitable
magnifying and counting devices or by raveling yarns from fabrics. See ANSI Z1.4.
5. Significance and Use
5.1 This test method is considered satisfactory for acceptance testing of commercial shipments because it has been used
extensively in the trade for that purpose.
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative
test should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a
1
This test method is under the jurisdiction of ASTM Committee D13 on Fabric Test Methods, Specific
Current edition approvedAug.Dec. 1, 2007. Published October 2007. January 2008 . Replaces Sections 28 to 34 of Methods D 1910 – 64 (1975). Originally approved in
1979 as D 3775 – 79. Last previous edition approved in 20032007 as D3775–03a. D 3775 – 07.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.ForAnnualBookofASTMStandards
volume information, refer tot he standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute, 11 W. 42nd St., 13th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D 3775–07a
minimum, use the samples for such a comparative test that are as homogeneous as possible, drawn from the same lot of material
as the samples that resulted in disparate results during initial testing and randomly assigned in equal numbers to each laboratory.
The test results from the laboratories involved should be compared using a statistical test for unpaired data, a probability level
chosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterial
must be adjusted in consideration of the known bias.
6. Apparatus
6.1 Use any suitable device, such as pick glass, rule and pointer, microfilm reader, or projection equipment.
1
6.2 Use a scale graduated in mm ( ⁄16 in.) to measure the width of the fa
...
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