GB 44702-2024 Specification for the limitation of harmful substances found in watch casings contacting directly with skin
1 Scope
This document defines the terms and definitions of limitation of harmful substances found in watch casings contacting directly with skin (hereinafter referred to as "watch casings"), specifies requirements, inspection rules, and marking, and describes corresponding test methods.
This document is applicable to watch casings contacting directly with skin made of metal, ceramic, leather, plastic, rubber, synthetic sapphire, inorganic glass, and fiber composite materials.
2 Normative references
The following documents contain requirements 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 6675.4 Safety of toys - Part 4: Migration of certain elements
GB 20400 Leather and fur - Limit of harmful matter
GB/T 22048 Determination of certain phthalate esters in toys and children's products
GB/T 39560.301 Determination of certain substances in electrical and electronic products - Part 3-1: Screening lead, mercury, cadmium, total chromium and total bromine by X-ray fluorescence spectrometry
GB/T 39560.4 Determination of certain substances in electrical and electronic products - Part 4: Mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS
GB/T 39560.5 Determination of certain substances in electrical and electronic products - Part 5: Cadmium, lead and chromium in polymers and electronics and cadmium and lead in metals by AAS, AFS, ICP-OES and ICP-MS
EN 1811 Reference test method for release of nickel from all post assemblies which are inserted into pierced parts of the human body and articles intended to come into direct and prolonged contact with the skin
EN 12472 Method for the simulation of accelerated wear and corrosion for the detection of nickel release from coated items
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
children's watches
watch designed for children aged 3 and above, and 14 and below
[Source: GB/T 41411-2022, 3.1]
4 Requirements
4.1 General requirements
4.1.1 Nickel release
The nickel release limit value for the metal and cermet (including coating) shall be less than 0.5 μg/cm2/week.
4.1.2 Limit of other harmful substances
The watch casings made of leather materials shall meet the requirements of GB 20400, while the limit requirements for harmful substances in the watch casings made of other materials shall meet those specified in Table 1.
Contents
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking
Bibliography
直接接触人体皮肤的手表外观件中有害物质限量的规定
1 范围
本文件界定了直接接触人体皮肤的手表外观件（以下简称“手表外观件”）中有害物质限量的术语和定义，规定了要求、检验规则及标识，描述了相应的试验方法。
本文件适用于直接接触人体皮肤的金属、金属陶瓷、皮革、塑料、橡胶、合成蓝宝石和无机玻璃、纤维复合材料制造的手表外观件。
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 6675.4 玩具安全 第4部分:特定元素的迁移
GB 20400 皮革和毛皮 有害物质限
GB/T 22048 玩具及儿童用品中特定邻苯二甲酸酯增塑剂的测定
GB/T 39560.301 电子电气产品中某些物质的测定 第3-1部分:X射线荧光光谱法筛选铅、汞、镉、总铬和总溴
GB/T 39560.4 电子电气产品中某些物质的测定 第4部分:CV-AAS、CV-AFS、ICP-OES和ICP-MS测定聚合物、金属和电子件中的汞
GB/T 39560.5 电子电气产品中某些物质的测定 第5部分:AAS、AFS、ICP-OES和ICP-MS法测定聚合物和电子件中镉、铅、铬以及金属中镉、铅的含量
EN 1811 长期直接与皮肤接触的物品以及插入人体刺穿部位的所有组件的镍释放量参考试验方法(Reference test method for release of nickel from all post assemblies which are inserted into pierced parts of the human body and articles intended to come into direct and prolonged contact with the skin)
EN 12472 涂层部件镍释放量的检测用加速磨损和腐蚀的模拟方法(Method for the simulation of accelerated wear and corrosion for the detection of nickel release from coated items)
3 术语和定义
下列术语和定义适用于本文件。
3.1
儿童手表children's watches
供3周岁及以上,14周岁及以下儿童使用的手表。
[来源:GB/T 41411-2022,3.1]
4 要求
4.1 通用要求
4.1.1 镍释放量
金属和金属陶瓷(含覆盖层)的镍释放量限量值应小于0.5 μg/cm2/周。
4.1.2 其他有害物质限量
皮革材料的手表外观件应符合GB 20400的要求,其他材料的手表外观件中有害物质限量要求应符合表1的规定。
