NY/T 385-1999
AbolishedRaw natural rubber-Technical specification for production of light colour standard rubber
天然生胶 浅色标准橡胶 生产工艺技术规程
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 胶乳的收集 → 4 浅色标准橡胶的生产工艺流程 → 5 浅色标准橡胶的生产操作要求 → 6 浅色标准橡胶的质量控制 → 7 包装、标志、贮存与运输 → 8 技术经济指标 → 附录A Foreword → 1 Scope → 2 Normative References → 3 Collection of Latex → 4 Production Process Flow of Light Colour Standard Rubber → 5 Production Operation Requirements for Light Colour Standard Rubber → 6 Quality Control of Light Colour Standard Rubber → 7 Packaging, Marking, Storage and Transportation → 8 Technical and Economic Indicators → Annex A
Scope
This standard specifies the basic process and technical requirements for the production of light colour standard rubber from raw natural rubber. This standard is applicable to the production process of manufacturing light colour standard rubber from natural latex.
本标准规定了天然生胶的浅色标准橡胶在生产过程中的基本工艺及技术要求。本标准适用于用天然胶乳制造浅色标准橡胶的生产工艺。
Normative References
Keywords
Application Summary AI generated
Natural rubber processing plants use this standard to regulate the production process of light colour standard rubber, ensuring consistent product quality. It provides quality control guidelines for raw materials used in manufacturing light-colored rubber products or medical rubber goods. By specifying technical requirements for key steps like latex collection, coagulation, granulation, and drying, it helps producers obtain high-quality raw rubber with light color and low impurities.
天然橡胶加工企业使用本标准来规范浅色标准橡胶的生产流程，确保产品质量稳定。该标准为生产浅色橡胶制品或医疗卫生橡胶制品提供原料质量控制依据。它通过规定胶乳收集、凝固、造粒和干燥等关键工序的技术要求，帮助生产者获得颜色浅、杂质少的优质生胶。
AI Summary AI generated
This standard specifies the production technology procedures for light colour standard rubber from raw natural rubber, covering the entire process from latex collection, purification, coagulation, granulation to drying. It emphasizes selecting latex from rubber tree clones with light color, strictly controlling the amounts of ammonia and antioxidants, and specifying key parameters such as coagulant acid dosage, drying temperature and time. Applicable to the production process of light colour standard rubber using natural latex as raw material, it aims to ensure that product quality indicators such as colour index and impurity content meet requirements.
本标准规定了天然生胶浅色标准橡胶的生产工艺技术规程，涵盖从胶乳收集、净化、凝固、造粒到干燥的全过程技术要求。标准强调选用颜色浅的胶树品系胶乳，严格控制氨和抗氧化剂用量，并规定了凝固酸用量、干燥温度和时间等关键参数。适用于以天然胶乳为原料生产浅色标准橡胶的工艺，旨在保证产品颜色指数和杂质含量等质量指标符合要求。
Key Sentences extracted from text
生产浅色标准橡胶应选用生胶颜色较浅的胶树品系(如PB86,RRIM600等)的优质胶乳，以保证所生产的浅色橡胶的颜色指数符合GB/T 14796所规定的颜色指数的要求。
一般选用氨(与硼酸并用)作鲜胶乳的早期保存剂，氨用量应不大于0.04%，用量过多将导致产品的颜色加深，并在收胶站加氨。
在加水稀释的同时，加入焦亚硫酸钠作抗氧剂。
采用醋酸作凝固剂时，用量为干胶重量的0.62%-0.65%；用甲酸时，用量为干胶重量的0.9%-0.4%。
对使用单元房或洞道式半连续干燥柜的，进口热风温度一般不应超过105℃，干燥时间一般不应超过5h；使用连续干燥机的，进口热风温度一般不应超过110℃，干燥时间一般不超过3h。
For producing light colour standard rubber, high-quality latex from rubber tree clones with lighter raw rubber color (such as PB86, RRIM600, etc.) should be selected to ensure that the colour index of the produced light colour rubber meets the requirements specified in GB/T 14796.
Generally, ammonia (used together with boric acid) is selected as the early preservative for fresh latex, and the amount of ammonia should not exceed 0.04%; excessive use will deepen the color of the product, and ammonia is added at the latex collection station.
While adding water for dilution, sodium metabisulfite is added as an antioxidant.
When using acetic acid as coagulant, the dosage is 0.62%-0.65% of the dry rubber weight; when using formic acid, the dosage is 0.9%-0.4% of the dry rubber weight.
For drying cabinets of unit room or tunnel type semi-continuous type, the inlet hot air temperature should generally not exceed 105℃, and the drying time should generally not exceed 5h; for continuous dryers, the inlet hot air temperature should generally not exceed 110℃, and the drying time should generally not exceed 3h.