ISO 80000-4-2019 pdf free.Quantities and units一 Part 4: Mechanics.
This International Standard specifies a method for the determination of the dimensional change of fabrics. garments or other textile articles when subjected to an appropriate combination of specified washing and drying procedures.
In the case of textile articles or deformable materials, it is necessary to exercise all possible caution in the interpretation of the results.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 139, Textiles — Standard atmospheres for conditioning and testing
ISO 3759, Textiles — Preparation, marking and measuring of fabric specimens and garments in tests for determination of dimensional change
ISO 6330, Textiles — Domestic washing and drying procedures for textile testing
3 Principle
The specimen is conditioned in the specified standard atmosphere and measured before subjection to the appropriate washing and drying procedures. After drying, conditioning and remeasuring of the specimen, the changes in dimensions are calculated.
4 Apparatus and reagents
Use apparatus and reagents as specified in ISO 3759 and ISO 6330.
5 Atmospheric conditions
The atmospheric conditions required for conditioning and testing are specified in ISO 139.
6 Test specimens
6.1 The selection, dimensions, marking and measuring of test specimens are specified in ISO 3759.
6.2 When possible, three specimens from each sample should be used. One or two specimens may be used when insufficient sample is available.
7 Procedure
7.1 Determine the original length and width dimensions, as appropriate, after the specimens have been conditioned and measured according to the procedure specified in Iso 139 and ISO 3759.
7.2 Wash and dry the specimens according to one of the procedures specified in Iso 6330, as agreed between the interested parties.
7.3 After washing and drying, condition and measure the specimens and calculate the dimensional change of the specimens according to the procedure specified in Iso 3759.
Record the changes in measurement separately as a percentage of the corresponding original value.
8.2 Express the average dimensional changes to the nearest 0,5 %.
8.3 State whether the dimension has decreased (shrinkage) by means of a minus sign (- ) or increased(extension) by means of a plus sign (+).
9 Test report
The test report shall specity the following:
a) the number and year of this International Standard;
b) the number of specimens washed and dried;
c) the procedure used for washing and drying from ISO 6330;
d) for fabric specimens, the average dimensional change in the length (warp or wale) and the average dimensional change in the width (weft or course) to the nearest 0,5 %;
e) for garments, the description, make and size of the garment tested;
f) for garments, an adequate description of each measuring position and the average dimensional change to the nearest 0,5 % at each position for each garment tested.ISO 80000-4 pdf download.
Tags: Quantities and units
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