标准编号:	GB/T 19635-2024
中文名称:	棉花 长绒棉
英文名称:	Cotton—Sea island cotton
中标分类:	B32    纤维作物与产品
行业分类:	GB    国家标准
ICS分类:	59.060.10 59.060.10    天然纤维 59.060.10
发布机构:	国家市场监督管理总局 国家标准化管理委员会
发布日期:	2024-3-15
实施日期:	2024-10-1
标准状态:	valid
替代旧标准:	GB/T 19635-2005 棉花 长绒棉
翻译语言:	英文
文件格式:	PDF
中文字符数:	17000 字
翻译价格(元):	1190.0
交付时间:	付款后 1~3 个工作日

Cotton - Sea island cotton 1 Scope This document defines the terms and definitions related to sea island cotton, specifies the quality requirements, inspection rules, inspection certificates, packaging and marking, storage and transportation, and describes the corresponding sampling and inspection methods. This document is applicable to the production, purchase, processing, trade, storage and use of sea island cotton. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6102.1 Test method for moisture regain in raw cotton by oven drying GB/T 6102.2 Test method for moisture regain in raw cotton - Electrical resistance meter GB/T 6498 Test method for Micronaire value of cotton fibres GB/T 6499 Test method for percentage of trash content in raw cotton GB 6975 Cotton baling GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 13786 Artificial daylighting illumination for cotton classing rooms GB/T 19617 Test method for length of cotton - Hand-measured staple length GB/T 20392 Test method for physical properties of cotton fibers - High volume instruments method GB/T 41690 Quantitative test method for foreign fiber in raw cotton - Manual method 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 grade a comprehensive index representing the quality grade of cotton maturity, color and luster characteristics, processing quality, etc. 3.2 cotton modal grade grade that accounts for 80% or more when inspected by batch with the rest of the grades only adjacent to it 3.3 gross weight sum of the weight of cotton and its packaging materials 3.4 net weight weight after deducting the weight of packaging materials from the gross weight 3.5 conditioned weight weight converted from the actual impurity content and actual moisture regain of cotton to the standard impurity content and conditioned moisture regain 3.6 conditioned lint percentage of seed cotton percentage of the conditioned weight of lint cotton extracted from seed cotton to the weight of corresponding seed cotton 3.7 foreign fiber non-cotton fibers and non-natural color cotton fibers mixed into cotton Note: The foreign fiber types include chemical fiber, hair, silk, hemp, plastic film, plastic rope, dyed thread (rope, cloth pieces), etc. 3.8 the content of foreign fiber in a baled cotton ratio of the weight of foreign fibers picked out from the sample to the weight of the picked sample Note: Expressed in g/t. 3.9 dangerous foreign matters hard and soft matters mixed into cotton Note: Dangerous matters include metals, bricks, stones, foreign fibers, etc. 4 Requirements for quality 4.1 Grade 4.1.1 Grade grading The sea island cotton is classified into five grades, namely Grade 1 to Grade 5, according to the grade conditions. Grade 3 is the standard grade.

Contents Foreword I 1 Scope 2 Normative references 3 Terms and definitions 4 Requirements for quality 5 Sampling 6 Test methods 7 Inspection rules 8 Inspection certificate 9 Packaging and marking 10 Storage and transportation

棉花 长绒棉 1 范围 本文件界定了长绒棉相关的术语和定义，规定了质量要求、检验规则、检验证书、包装及标志、储存与运输，描述了相应的抽样和检验方法。 本文件适用于长绒棉的生产、收购、加工、贸易、仓储和使用。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。 GB/T 6102.1 原棉回潮率试验方法 烘箱法 GB/T 6102.2 原棉回潮率试验方法 电阻法 GB/T 6498 棉纤维马克隆值试验方法 GB/T 6499 原棉含杂率试验方法 GB 6975 棉花包装 GB/T 8170 数值修约规则与极限数值的表示和判定 GB/T 13786 棉花分级室的模拟昼光照明 GB/T 19617 棉花长度试验方法 手扯尺量法 GB/T 20392 棉纤维物理性能试验方法 大容量纤维测试仪法 GB/T 41690 原棉异性纤维定量试验方法 手工法 3 术语和定义 下列术语和定义适用于本文件。 3.1 品级 grade 表示棉花成熟程度、色泽特征及加工质量等品质等级的综合性指标。 3.2 主体品级 cotton modal grade 按批检验时，占有80%及以上的品级，其余品级仅与其相邻。 3.3 毛重 gross weight 棉花及其包装物重量之和。 3.4 净重 net weight 毛重扣减包装物重量后的重量。 3.5 公定重量 conditioned weight 净重按棉花实际含杂率和实际回潮率折算成标准含杂率和公定回潮率后的重量。 3.6 籽棉公定衣分率 conditioned lint percentage of seed cotton 从籽棉上轧出的皮棉公定重量占相应籽棉重量的百分率。 3.7 异性纤维 foreign fiber 混入棉花中的非棉纤维和非本色棉纤维。 注：异性纤维类型如化学纤维、毛发、丝、麻、塑料膜、塑料绳、染色线(绳、布块)等。 3.8 成包皮棉异性纤维含量 the content of foreign fiber in a baled cotton 从样品中挑拣出的异性纤维的重量与被挑拣样品重量之比。 注：用克每吨(g/t)表示。 3.9 危害性杂物 dangerous foreign matters 混入棉花中的硬杂物和软杂物。 注：危害性杂物包括金属、砖石及异性纤维等。 4 质量要求 4.1 品级 4.1.1 品级划分 根据长绒棉的品级条件，长绒棉分为5级，即1级～5级。3级为品级标准级。