GB1103.1-2023

Cotton—Part 1: Saw ginned upland cotton

棉花第1部分：锯齿加工细绒棉

GB 1103.1-2023 est une norme nationale chinoise obligatoire en vigueur : Cotton—Part 1: Saw ginned upland cotton. Secteur : Consommation. Thème principal : Sécurité des produits. Entrée en vigueur : 1 sept. 2024.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

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Champ d’application

This standard applies to saw ginned upland cotton involved in production, purchasing, processing, trade, warehousing, and usage within China. It is specifically designed for the domestic cotton industry, particularly addressing the transition to machine-harvested cotton. It is mandatory for all entities processing or trading saw ginned upland cotton in the Chinese market. The standard does not cover roller ginned upland cotton or naturally colored cotton, which are addressed in other parts of the GB 1103 series.

Exigences techniques

The standard specifies comprehensive quality parameters for cotton, including color grade, which is classified into 4 types and 13 levels based on yellow depth and brightness. It defines preparation quality (rolling quality) into three tiers (Good, Medium, Poor) based on appearance and defect counts. Manufacturers must ensure cotton is free from dangerous foreign matters and strictly control foreign fiber content. Physical property requirements include length (graded from 25mm to 32mm), micronage value (classified into A, B, C grades), moisture regain, and trash content. The 2023 revision introduces a new parameter: short fiber content, categorized into four levels. It also sets strict limits for breaking tenacity and length uniformity index. Compliance with these intrinsic quality metrics is essential for batch and bale-by-bale acceptance. Packaging and marking rules require cotton bales to be packaged according to GB 6975. The standard mandates specific quality identifiers and introduces QR codes or barcodes for bale-by-bale traceability. Transportation and storage must prevent fire, moisture, and contamination to maintain quality certification validity.

Méthodes d’essai

Testing involves both sensory and instrumental methods. Color grade and preparation quality can be assessed visually using physical standards in a standardized lighting room, or via high-volume instruments (HVI). In case of disputes, instrument testing for color and roller analysis for short fiber content serve as the arbitration methods. Other key tests include the micronage value test, length measurement via hand-pulling and ruler method or HVI, and trash content analysis using the raw cotton trash analyzer. The standard also outlines specific sampling procedures for seed cotton and baled cotton to ensure representative testing for foreign fiber content.

Questions fréquentes

What products are regulated under GB 1103.1-2023?

This standard specifically regulates saw ginned upland cotton. It applies to the production, purchasing, processing, trade, warehousing, and usage of this specific type of cotton. It does not cover roller ginned upland cotton or naturally colored cotton, which are covered in other parts of the GB 1103 series.

Are there any major updates from the previous version, GB 1103.1-2012?

The 2023 version introduces several key updates, notably the addition of the short fiber content indicator and its corresponding testing methods. It also updates the color grading chart, tightens the preparation quality grading criteria, and introduces QR code marking for cotton bales. There is also a 24-month transition period for the implementation of short fiber rate testing and the automated trash analysis system.

How does GB 1103.1-2023 differ from international cotton standards?

GB 1103.1-2023 is tailored specifically for the Chinese cotton industry's context, particularly focusing on the transition to machine-harvested cotton. While it incorporates modern instrument testing methods similar to international norms (like using high-volume fiber testing instruments), it also retains specific sensory grading methods and color grade charts unique to the Chinese market. Manufacturers must adhere to these domestic grading rules for domestic trade.

The summary above provides a high-level overview of GB 1103.1-2023. To ensure complete compliance for your cotton 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 1103.1-2023 today to access all detailed parameters, grading tables, and testing procedures.

Indications d’applicabilité

Type: Produit
CCS: B32
ICS: 59.060.10
Autorité compétente: Standardization Administration of China
Comité technique: National Technical Committee on Fibers of Standardization Administration of China

Relations

Remplace:GB 1103.1-2012