GB18267-2013
Cashmere
山羊绒
GB 18267-2013 is a current mandatory Chinese national standard for Cashmere. It appears in the Consumer compliance cluster with a product safety focus and has an implementation date of May 9, 2014.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the classification, technical specifications, and testing methods for cashmere, specifically categorized into raw cashmere, scoured cashmere, and dehaired cashmere. It is designed for use in cashmere production, trading, processing, quality supervision, and import/export inspections. It is not applicable to other animal fibers or blended textiles that do not contain pure cashmere. The standard classifies cashmere by natural color, including white, grey, and purple cashmere.
Technical requirements
GB 18267-2013 establishes mandatory technical conditions for three distinct stages of cashmere processing. For raw cashmere, it sets grade models based on average diameter and staple length, alongside limits for moisture regain and the strict separation of defect fibers. Manufacturers must ensure that raw cashmere is properly graded and free from prohibited defect types. For scoured cashmere, the standard mandates evaluation criteria including average diameter, average length, and pure cashmere content. The quality is represented by a specific coding system combining category, model, and characteristics (e.g., scoured rate graded into A, B, or C tiers). It also specifies washing conditions to ensure residual grease and vegetable matter are strictly controlled. For dehaired cashmere, the requirements are the most comprehensive, encompassing nine technical indicators: average diameter, diameter variation coefficient, average length, length variation coefficient, short fiber content, guard hair content, foreign matter content, breaking strength, and dark fiber content. Suppliers must classify dehaired cashmere into A, B, or C tiers based on these specific physical and chemical parameters. Notably, the standard clarifies that fibers containing morphologically variant cashmere (under 5%) but no non-animal or other animal fibers can be labeled as 100% cashmere.
Testing methods
The standard outlines rigorous sampling procedures and testing methodologies. Key tests include the hand-staple length test using a standard length board, and average diameter tests which can utilize sensory, optical projection, or laser scanning methods (with optical projection designated for arbitration). It also details washing procedures to determine scoured cashmere yield and mechanical separation to calculate pure cashmere content. Additionally, it specifies methods for testing breaking strength via GB/T 27629 (bundle fiber method) and quantifying dark fiber content manually under specific lighting conditions.
FAQs
What products are regulated under GB 18267-2013?
This standard regulates raw cashmere, scoured cashmere, and dehaired cashmere. It applies to the production, trading, processing, quality supervision, and import/export inspections of these textile materials.
Are there any significant updates from the previous GB 18267-2000 version?
The 2013 version introduces new definitions for impurities and foreign matter content. It also adds length variation coefficient indicators for dehaired cashmere, changes the breaking strength testing method to a bundle fiber method, and introduces specific re-inspection rules and tolerances.
How does GB 18267-2013 align with international testing standards?
The standard references several international and national testing methods, such as using IWTO-12 (Sirolan-laserscan) for measuring mean fiber diameter. However, for arbitration in China, the optical projection microscope method (GB/T 10685) is strictly adopted as the final testing principle.
The summary above provides a high-level overview of GB 18267-2013. To ensure complete compliance for your textile products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 18267-2013 today to access all detailed parameter tables, calculation formulas, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- W21
- ICS
- 59.060.10
- Competent department
- Standardization Administration of China
- Technical committee
- Standardization Administration of China
Relationships
Replaces:GB 18267-2000