ASTM D6321-98

Standard Practice for the Evaluation of Machine Washable T-Shirts

SCOPE
1.1 This practice covers test methods and procedures used to evaluate important characteristics of machine washable T-shirts. T-shirts may be made of knitted fabric composed of any textile fiber(s) or blend of fibers and intended to be used as underwear or as an outer garment.
1.2 T-shirts' characteristics may be assessed either as a final product or at any intermediate processing stage.
1.3 This practice excludes T-shirts intended for hand washing or dry cleaning care.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

• Status: Historical
• Publication Date: 09-Sep-1998
• ICS: 61.020 - Clothes
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.61 - Apparel

Relations

• Replaced By: ASTM D6321-98(2004) - Standard Practice for the Evaluation of Machine Washable T-Shirts
• Effective Date: 01-Oct-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 6321 – 98
Standard Practice for
the Evaluation of Machine Washable T-Shirts
This standard is issued under the fixed designation D 6321; 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 Knitted and Woven Beachwear and Sports Shirt Fabrics
D 4156 Performance Specification for Women’s and Girls’
1.1 This practice covers test methods and procedures used
Knitted Sportswear Fabrics
to evaluate important characteristics of machine washable
2.2 AATCC Test Methods:
T-shirts. T-shirts may be made of knitted fabric composed of
Evaluation Procedure 1, Gray Scale for Color Change
any textile fiber(s) or blend of fibers and intended to be used as
Evaluation Procedure 2, Gray Scale for Staining
underwear or as an outer garment.
Evaluation Procedure 7, Instrumental Assessment of the
1.2 T-shirts’ characteristics may be assessed either as a final
Change in Color of a Textile Specimen
product or at any intermediate processing stage.
Method 107, Colorfastness to Water
1.3 This practice excludes T-shirts intended for hand wash-
Method 150, Dimensional Changes in Automatic Home
ing or dry cleaning care.
Laundering of Garments
1.4 The values in SI units are to be regarded as the standard.
Method 172, Colorfastness to Non-Chlorine Bleach in
The values given in parentheses are provided for information
Home Laundering
only.
Method 179, Skewness Change and Garment Twist in
1.5 This standard does not purport to address all of the
Fabrics and Garments After Automatic Home Laundering
safety concerns, if any, associated with its use. It is the
2.3 Other Documents:
responsibility of the user of this standards to establish appro-
A Glossary of AATCC Standard Terminology
priate safety and health practices and determine the applica-
Standardization of Home Laundry Text Conditions
bility of regulatory limitations prior to use.
3. Terminology
2. Referenced Documents
3.1 Definitions:
2.1 ASTM Standards:
2 3.1.1 T-shirt, n—a knitted garment, typically constructed of
D 123 Terminology Relating to Textiles
jersey or 1 by 1 rib fabric, used as either an undergarment or as
D 1776 Practice for Conditioning Textiles for Testing
an outer casual top with a rib collar, hemmed sleeves and
D 3136 Terminology Relating to Care Labels for Textile
bottom, and a body configuration that resembles the letter “T”.
and Leather Products Other Than Textile Floor Coverings
2 3.1.1.1 Discussion—T-shirts may have either crew or
and Upholstery
v-neck styles; short or long sleeve lengths, and be adorned with
D 3786 Test Method for Hydraulic Brushing Strength of
appliques, embroidery, or garment printing or combinations of
Knitted Goods and Nonwoven Fabrics Diaphragm Burst-
adornments. Henley and polo-styles shirts are excluded.
ing Strength Tester Method
3.1.2 For definitions of other textile terms used in this
D 3787 Test Method for Bursting Strength of Knitted
standard, refer to terminology in Terminology D 123 and
Goods: Constant-Rate-of-Transverse (CRT), Ball Burst
4 Glossary of AATCC Standard Terminology.
Test
D 3887 Specifications for Tolerances for Knitted Fabrics
4. Significance and Use
D 3940 Test Method for Bursting Strength and Elongation
3 4.1 This practice may be used to evaluate pertinent charac-
of Sewn Seams of Knit or Woven Textile Fabrics
teristics of washable T-shirts.
D 4154 Performance Specification for Men’s and Boys’
4.2 T-shirts may be subject to extra processes such as
garment dyeing, garment washing, printing, application of
embroidery or trims. An individual process or combination or
This practice is under the jurisdiction of ASTM Committee D-13 on Textiles,
processes may affect the performance of the final product.
and is the direct responsibility of Subcommittee D13.61 on Apparel.
Current edition approved Sept. 10, 1998. Published February 1999.
Annual Book of ASTM Standards, Vol 07.01.
Discontinued; See 1995 Annual Book of ASTM Standards, Vol 07.02.
4 5
Annual Book of ASTM Standards, Vol 07.02. Available from AATCC, PO Box 12215, Research Triangle Park, NC 27709.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 6321
4.3 This practice may be used by mutual agreement between
the purchaser and the supplier to establish purchasing specifi-
cations.
5. Sampling, Selection, and Number of Specimens
5.1 Lot Sample—Take a lot sample as directed in an
applicable material specification or as agreed between pur-
chaser and supplier, such as an agreement to take at random
some fixed number of shipping containers or garments from
each lot.
5.2 Laboratory Sample—From each lot sampling unit, take
five T-shirts to be used as the laboratory sample.
5.3 Test Specimen—From each laboratory sample, two
T-shirts are to be tested as-received and two T-shirts that are to
be laundered. The fifth T-shirt is to be retained as a control
NOTE 1—Refer to AATCC Test Method 150.
specimen and not tested.
FIG. 1 Dimensional Change Marking Location
6. Fabric Performance Characteristics
7.2.3.2 Chest Width—Place marks “A1” and “A2” 125 mm
6.1 Evaluate fabric designated for T-shirt manufacture using
(5.0 in) below each armhole seam. This is Distance “A”.
Specification D 3887, Performance Specification D 4154, or
Measure and record the distance across the chest to the nearest
Performance Specification D 4156 as appropriate.
mm ( ⁄16in.).
7.2.3.3 Front Length—Fold the T-shirts in half lengthwise,
7. Garment Performance Characteristics
back-to-back, matching shoulder and neck band seams. Lay the
7.1 Assessments Prior to Machine Laundering (As-Received
folded T-shirts flat on a smooth surface. Place marks“ B1” and
State):
“B2” 25 mm (1 in.) below the center neck band and 25 mm (1
7.1.1 Condition T-shirts in standard atmospheres for testing
in.) above the
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