GB/T 33796-2025General technical requirement of thermoplastic starch (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document replaces GB/T 33796-2017 "General technical requirements for thermoplastic starch". Compared with GB/T 33796-2017, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows.

a) The technical requirements for “Appearance” have been changed (see 4.1, 4.1 and Table 1 of the 2017 edition);

b) The requirements and test methods for “biodegradability” have been changed (see 4.3 and 5.7, 4.3 and 5.7 of the 2017 edition);

c) The test method for "starch content" has been deleted (see 5.8 of the 2017 edition);

d) Added requirements for “biodegradability labeling” (see Chapter 7);

e) The requirements for “storage period” have been changed (see 8.3, 8.3 of the 2017 edition).

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed and coordinated by the National Technical Committee for Standardization of Bio-based Materials and Degradable Products (SAC/TC380).

This document was drafted by: Wuhan Huali Environmental Protection Industry Co., Ltd., Shenzhen Hongcai New Materials Technology Co., Ltd., Zhejiang Huafa Ecological Science and Technology Co., Ltd.

Technology Co., Ltd., Zhejiang Green Grass Ecological Technology Co., Ltd., Changzhou Longjun Tianchun Environmental Protection Technology Co., Ltd., Sichuan University, Shenzhen Zhongjing Colin Environmental Plastic Technology Co., Ltd., Shouguang Jinyuandong Modified Starch Co., Ltd., Huitong Beigong Biotechnology (Beijing) Co., Ltd., Yangzhou Huitong New Materials Co., Ltd., Shenzhen Wandajie Environmental Protection New Materials Co., Ltd., Chongqing Lianfa Plastic Technology Co., Ltd., Anhui Huachi Environmental Protection Technology Co., Ltd., Hefei Hengxin Life Technology Co., Ltd., Ningbo Jialian Technology Co., Ltd., Fuling Technology Co., Ltd.

Co., Ltd., Guangdong Chongxi Environmental Protection Technology Co., Ltd., Shenzhen Zhengwang Environmental Protection New Materials Co., Ltd., Henan Longdu Tianren Biomaterials Co., Ltd.

Company, Sinopec (Dalian) Petrochemical Research Institute Co., Ltd., Beijing Technology and Business University, Beijing Fengde Lanzhi Packaging Technology Co., Ltd., Jiangxi Xuan Pin New Materials Co., Ltd., Beijing Yonghua Qingtian Technology Development Co., Ltd., and Yingkou Zhengda Industrial Co., Ltd.

The main drafters of this document are: Bai Juan, Zhang Libin, Yang Hong, Sun Yuanzheng, Lü Shafeng, Mi Kejun, Ye Lei, Tian Guoqiang, Wu Gang, Wang Yuzhong, Kong Li, Gao Shijun, Wu Zehua, Shen Kunliang, Jiang Suchen, Wei Jie, Zhou Jiushou, Wang Chunqiu, Yan Deping, Wang Chunxia, Zhang Fuxiang, Wang Xiong, Hu Xinfu, Tao Yang, Wei Da, Zhang Jianhong, Zhang Kai, Mao Bin, Zhou Feng, Liao Sha, Diao Xiaoqian, Fu Ye, Xu Jingmei, Wang Peng, Liu Yunqiao, and Zheng Weichun.

The previous versions of this document and the documents it replaces are as follows.

— First published in 2017 as GB/T 33796-2017;

— This is the first revision.

1 Scope

This document defines the terms and definitions of thermoplastic starch, stipulates its technical requirements, inspection rules, marking, packaging, transportation and storage, and describes The corresponding test methods are described.

This document is applicable to the production of various natural starches as the main raw materials, which are obtained through physical modification and/or chemical modification.

Thermoplastic starch for plastic materials and products.

2 Normative references

GB/T 1033.1

GB/T 2547

GB/T 3682.2

GB/T 6284

GB/T 41010-2021

3 Terms and definitions

The following terms and definitions apply to this document.

4 Technical requirements