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
直接接觸人體皮膚的手表外觀件中有害物質限量的規定
1 范圍
本文件界定了直接接觸人體皮膚的手表外觀件（以下簡稱“手表外觀件”）中有害物質限量的術語和定義，規定了要求、檢驗規則及標識，描述了相應的試驗方法。
本文件適用于直接接觸人體皮膚的金屬、金屬陶瓷、皮革、塑料、橡膠、合成藍寶石和無機玻璃、纖維復合材料制造的手表外觀件。
2 規范性引用文件
下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用于本文件。
GB 6675.4 玩具安全 第4部分:特定元素的遷移
GB 20400 皮革和毛皮 有害物質限
GB/T 22048 玩具及兒童用品中特定鄰苯二甲酸酯增塑劑的測定
GB/T 39560.301 電子電氣產品中某些物質的測定 第3-1部分:X射線熒光光譜法篩選鉛、汞、鎘、總鉻和總溴
GB/T 39560.4 電子電氣產品中某些物質的測定 第4部分:CV-AAS、CV-AFS、ICP-OES和ICP-MS測定聚合物、金屬和電子件中的汞
GB/T 39560.5 電子電氣產品中某些物質的測定 第5部分:AAS、AFS、ICP-OES和ICP-MS法測定聚合物和電子件中鎘、鉛、鉻以及金屬中鎘、鉛的含量
EN 1811 長期直接與皮膚接觸的物品以及插入人體刺穿部位的所有組件的鎳釋放量參考試驗方法(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 涂層部件鎳釋放量的檢測用加速磨損和腐蝕的模擬方法(Method for the simulation of accelerated wear and corrosion for the detection of nickel release from coated items)
3 術語和定義
下列術語和定義適用于本文件。
3.1
兒童手表children's watches
供3周歲及以上,14周歲及以下兒童使用的手表。
[來源:GB/T 41411-2022,3.1]
4 要求
4.1 通用要求
4.1.1 鎳釋放量
金屬和金屬陶瓷(含覆蓋層)的鎳釋放量限量值應小于0.5 μg/cm2/周。
4.1.2 其他有害物質限量
皮革材料的手表外觀件應符合GB 20400的要求,其他材料的手表外觀件中有害物質限量要求應符合表1的規定。
