1. Scope

1.1 This test method covers the measurement of shrinkage of yarns and cords when exposed in a thermal shrinkage oven.

1.2 This test method is applicable to yarns and cords made of nylon, polyester, and other polymers not detrimentally affected by the temperature used and with linear densities in the range from 20 to 700 tex (180 to 6300 denier).

1.2.1 Yarns or cords for testing may be taken from yarn or cord packages or from fabrics.

1.3 This test method shows values in both SI and inch-pound units. SI is the technically correct name for the system of units known as the International System of Units. Inch-pound units is the technically correct name for the customary units used in the United States. The values stated in either acceptable metric units or other units shall be regarded separately as standard. The values expressed in each system may not be exact equivalents; therefore, each system must be used independently of each other, without combining values in any way. Referee decisions are to use SI units.

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 hazard statements are given in Section 8.

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

D885 Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base Fibers

D1776 Practice for Conditioning and Testing Textiles

D6477 Terminology Relating to Tire Cord, Bead Wire, Hose Reinforcing Wire, and Fabrics

Keywords

shrinkage; thermal; tire cord; Aramid fibers; Drum-set; Fiber-reinforced materials; Nylon plastics (PA); Ovens; Plastics--textile applications; Polyester textile applications; Polymers; Retraction (relaxation); Shrinkage--textile fabrics/fibers; Specimen preparation (for testing)--textiles; Testing methods--textile applications; Textile fibers; Thermal analysis (TA)--textiles; Tire cords and tire cord fabrics; Unrestrained/untensioned yarn skeins; Yarns;

ICS Code

ICS Number Code 59.080.20 (Yarns); 59.080.50 (Ropes)

DOI: 10.1520/D4974-99

ASTM International is a member of CrossRef.