Standard Table of Commercial Moisture Regains for Textile Fibers

SCOPE
1.1 This table lists the commercial moisture regains commonly used for a number of textile fibers. Such moisture regain values are intended primarily for determining the commercial weight of a specific fiber when the fiber is bought or sold on this basis. These regain values also are used in calculating the linear density of yarn in procedures employing such factors and in the quantitative analysis of fiber blends.

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29-Feb-2004
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ASTM D1909-04 - Standard Table of Commercial Moisture Regains for Textile Fibers
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1909–04
Standard
1
Table of Commercial Moisture Regains for Textile Fibers
This standard is issued under the fixed designation D1909; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This table lists the commercial moisture regains com- 3.1 Definitions:
monly used for a number of textile fibers. Such moisture regain 3.1.1 commercial moisture regain (CMR), n—a formally
values are intended primarily for determining the commercial adopted,arbitraryvalue,tobeusedwiththeoven-driedmassof
weight of a specific fiber when the fiber is bought or sold on textile fibers, when calculating the commercial mass of a
this basis. These regain values also are used in calculating the shipment or delivery.
lineardensityofyarninproceduresemployingsuchfactorsand 3.1.2 For definitions of other textile terms used, refer to
in the quantitative analysis of fiber blends. Terminology D123.
2. Referenced Documents 4. Significance and Use
2
2.1 ASTM Standards: 4.1 The value listed for the commercial moisture regain of a
D123 Terminology Relating to Textiles specific fiber type is not an experimentally determined quantity
D2118 Practice for Assigning a Standard Commercial but a purely arbitrary value arrived at for commercial purposes
Moisture Content for Wool and its’ Products by interested parties. The actual moisture regain values of
D2720 Practice for Calculation of Commercial Weight and textile materials, when in moisture equilibrium with the stan-
Yield of Scoured Wool, Top, and Noil for Various Com- dard atmosphere for testing, bear no consistent relation to the
mercial Compositions commercial moisture regain values listed herein. Equilibrium
moisture regain values depend upon the previous history of the
material.
1
This table is under the jurisdiction of ASTM Committee D13 on Textiles and
is the direct responsibility of Subcommittee D13.51 on Chemical Conditioning and
5. Table of Commercial Moisture Regain Values
Performance Test Methods.
Current edition approved March 1, 2004. Published March 2004. Originally
5.1 Commercial moisture regain values for specified fibers
approved in 1961. Last previous edition approved in 2001 as D1909 – 96(2001).
are listed in Table 1.
DOI: 10.1520/D1909-04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6. Keywords
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer tot he standard’s Document summary page on
6.1 moisture regain; textile fiber
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1909–04
TABLE 1 Commercial Moisture Regain Values
Fiber Regain, % Fiber Regain, %
G
Acetate (secondary) 6.5 Modacrylic
Acrylic 1.5 Class I 0.4
A
Aramid, for Class II 2.0
High Modulus Yarn 3.5
Standard Yarn 7.0
Class III 3.0
Nylon (polyamide) 4.5
Olefi
...

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