ASTM D1423/D1423M - 16

Standard Test Method for Twist in Yarns by Direct-Counting


Status:
Gældende
Type:
Standard
Sprog:
Engelsk
Pris fra:
kr. 327,24

Beskrivelse

1.1 This test method covers the determination of the amount and direction of twist at the completion of any stage of twisting in single (spun or filament), plied, cabled, or novelty (exclusive of long-term repeat patterns) yarns. The procedures are designed primarily for yarns in packages, but, with special precautions, they are applicable to yarns taken from fabrics. The procedure for spun yarn in 9.2 is also applicable to rovings.1.2 For plied yarns, this test method covers the determination of the twist of the plied yarns and the twist of the single yarn before plying. For cabled yarns, the test method covers the determination of the cable or hawser twist; the twist of the plied yarn after plying, but prior to the last twisting operation; and the twist of the single yarn before plying. Procedures are also included for the determination of the twists of the single and plied yarn components as they lie in the final structure. Also, directions are included for the determination of tw

Antal sider: 7

Internationale relationer :

ICS: 59.080.20 - Garner

Varenummer: A013137