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  • ASTM
    D5362-13 Standard Test Method for Snagging Resistance of Fabrics (Bean Bag) (Redline)
    Edition: 2013
    $68.89
    Unlimited Users per year

Description of ASTM-D5362 2013

ASTM D5362 - 13

Standard Test Method for Snagging Resistance of Fabrics (Bean Bag)

Active Standard ASTM D5362 | Developed by Subcommittee: D13.59

Book of Standards Volume: 07.02




ASTM D5362

Significance and Use

5.1 Acceptance Testing This test method may be used for acceptance testing of commercial shipments of fabrics because the precision is acceptable (see 15.1 ).

5.1.1 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, 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 number to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, at 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.

5.2 This test method may be used for quality control testing of fabrics during manufacturing and product comparisons of different fabrics by manufacturers, retailers, and users. This test method may also be used by researchers to examine the effect of new fibers, yarns, fabric constructions, and finishes on the snagging resistance of fabrics.

5.3 This test method may be used to test the snagging resistance of most apparel and home furnishings fabrics. However, a different test method (see 5.3.1 ) may be needed for different types of fabrics and different end-uses (such as towels, swimwear, slacks, and upholstery).

5.3.1 Some fabrics which may not be suitable for this test method are described in 1.2 . Many open construction fabrics can be tested for snagging resistance using AATCC Test Method?65 . Many heavy or stiff fabrics can be tested for snagging resistance using Test Method D3939 . The snagging resistance of many pile floor coverings can be tested by Test Method D1335 .

5.4 Because fabric snagging can be affected by laundering or drycleaning, it may be advisable to test the snagging resistance of a fabric before and after laundering or drycleaning.

5.5 The snagging resistance of a specific fabric varies with individual wearers and general conditions of use. Therefore, it can be expected that garments of the same fabric will show a fairly wide snagging resistance spectrum after wear and much greater variation in wear than in replicate fabric specimens subjected to controlled laboratory tests. This factor should be considered when adopting levels of acceptability for any specification that includes snagging resistance.

5.6 Snags observed in worn garments vary appreciably in number and appearance. The appearance of a snag depends particularly on (1) the degree of color contrast between the snag and the surrounding area of the fabric, or, (2) the presence of long distortions or long protrusions. These conditions are not evaluated when snagging is rated solely on the number of snags. See Section 3 for a description of terminology such as color contrast, distortion, and protrusion See Figs. 1- 3 . Because the overall acceptability of a specific fabric is dependent on both the characteristics of the snags and other factors affecting fabric appearance, it is recommended that fabrics tested in the laboratory be evaluated with regard to the defects which may be visually observed and not rated solely on the number of snags developed. A series of visual rating standards (see 6.7 ) may be set up to provide a basis for the ratings. The visual rating standards are most advantageous when the tested laboratory specimens correlate closely in appearance with fabrics from a wear test; for example when tested laboratory specimens and fabrics from a wear test show similar color contrasts. In the preceding example, a series of fabrics from the wear test would be a good choice for the fabric standards described in 6.7.2 . Also a point rating system may be used that considers the number of the snags and the appearance of the snags. (See 13 for additional information about snags, protrusions, distortions, and color contrasts. Also, see Figs. 1- 3 ).

1. Scope

1.1 This test method determines the snagging resistance of a fabric.

1.2 Studies of fabric snagging have shown that this test method is suitable for a range of woven and knitted fabrics made from textured or untextured filament yarns or spun yarns or combinations of these yarns. 2 , 3 This test method is not suitable for (1) open construction fabrics (such as a net) because the pins in the test chamber will snag the bean bag rather than the specimen, (2) heavy or stiff fabrics that cannot be made into a cover for the bean bag, and (3) tufted or nonwoven fabrics because the apparatus is designed for woven and knitted fabrics.

1.3 The values stated in either acceptable metric units or in other units shall be regarded separately as standard. The values stated in each system may not be the exact equivalents; therefore, each system must be used independently of the other, without combining values in any way. In case of referee decisions the metric units will prevail.

1.4 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. Specific precautionary statements are given in Section 7 .


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D123 Terminology Relating to Textiles

D1335 Test Method for Tuft Bind of Pile Yarn Floor Coverings

D1776 Practice for Conditioning and Testing Textiles

D2724 Test Methods for Bonded, Fused, and Laminated Apparel Fabrics

D3136 Terminology Relating to Care Labeling for Apparel, Textile, Home Furnishing, and Leather Products

D3939 Test Method for Snagging Resistance of Fabrics (Mace)

D4467 Practice for Interlaboratory Testing of a Textile Test Method That Produces Non-Normally Distributed Data

D4850 Terminology Relating to Fabrics and Fabric Test Methods

AATCC Standards

135 Test Method for Dimensional Changes in Automatic Home Laundering of Woven and Knit Fabrics

Keywords

knitted fabrics; snagging resistance; woven fabric;


ICS Code

ICS Number Code 59.080.30 (Textile fabrics)


DOI: 10.1520/D5362

ASTM International is a member of CrossRef.

ASTM D5362

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