T/CCTA 30518-2025 Active Group standards

T/CCTA 30518-2025 Air-jet vortex spun viscose / polyamide blended and polyester PBT filament core-spun grey yarn

Publish Date: 2025-07-28 Implement Date: 2025-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CCTA 30518-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Drugs for the cardiovascular, respiratory, and blood systems

ICS Name: Yarn

Publish Date: 2025-07-28

Implement Date: 2025-08-01

Scope

This document provides the product classification and marking of jet vortex spun polyester PBT filament core-spun yarn with viscose and nylon 6 short fibers, specifies the requirements, inspection rules, marking and packaging, and describes the corresponding test methods. This document is applicable to core-spun yarn produced by the jet vortex spinning process, with polyester PBT filament (55.6 dtex) as the core yarn and viscose and nylon 6 short fibers as the outer yarn (the content of viscose and nylon 6 short fibers in the outer yarn is 70% and 30%, respectively). The main technical indicators evaluated include: yarn density deviation rate, yarn density variation coefficient, single yarn breaking strength, single yarn breaking strength variation coefficient, evenness of yarn unevenness variation coefficient, cotton knots per kilometer (+200%), and yarn defects per 100,000 meters, etc.