Standard No.:	HG/T 4235-2020
English Name:	Dipped polyester-cotton canvas for rubber conveyors
Chinese Name:	输送带用浸胶涤棉帆布
Professional Classification:	HG    Professional Standard - Chemistry
Source Content Issued by:	MIIT
Issued on:	2020-12-09
Implemented on:	2021-4-1
Status:	valid
Superseding:	HG/T 4235-2011 Dipped polyester-cotton canvas for rubber conveyors
Target Language:	English
File Format:	PDF
Word Count:	5000 words
Translation Price(USD):	130.0
Delivery:	via email in 1 business day

HG/T 4235-2020 Dipped polyester-cotton canvas for rubber conveyors 1 Scope This standard specifies the product types, technical requirements, test methods, and inspection rules, as well as packaging, marking, storage and transportation of ordinary and heat-resistant dipped polyester-cotton canvases for rubber conveyors. This standard is applicable to ordinary and heat-resistant dipped polyester-cotton canvases for rubber conveyors, and may also serve as a reference for ordinary and heat-resistant dipped polyester-cotton canvases for other rubber products. 2 Normative references The following referenced documents are indispensable for the application 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 9995 Determination of moisture content and moisture regain of textile - Oven-drying method GB/T 31334.1 Test methods for dipped canvas - Part 1: Adhesion strength GB/T 31334.4 Test methods for dipped canvas - Part 4: Hot air thermal shrinkage GB/T 31334.5 Test methods for dipped canvas - Part 5: Tensile properties GB/T 34235 Dipped polyester canvas technical requirements and evaluation methods 3 Product types Dipped polyester-cotton canvases for rubber conveyors are classified into ordinary dipped-polyester cotton canvas (TC) and heat-resistant dipped polyester-cotton canvas (HTTC). 4 Technical requirements 4.1 Physical properties 4.1.1 The physical property indexes of ordinary dipped polyester-cotton canvases shall meet the requirements of Table 1. Table 1 Physical property indexes of ordinary dipped polyester-cotton canvases 4.2 Appearance quality The appearance quality of ordinary dipped polyester-cotton canvas and heat-resistant dipped polyester-cotton canvas for rubber conveyors shall meet the requirements of Table 3. Table 3 Appearance quality requirements

Contents Foreword I 1 Scope 2 Normative references 3 Product types 4 Technical requirements 5 Test methods 6 Inspection rules 7 Packaging, marking, storage and transportation