Standard No.:	GB/T 30695-2014
English Name:	Identification of polyvinyl chloride and polyurethane imitation leather
Chinese Name:	聚氯乙烯、聚氨酯人造革（合成革）材质鉴别方法
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ; SAC
Issued on:	2014-12-31
Implemented on:	2015-3-2
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	7500 words
Translation Price(USD):	180.0
Delivery:	via email in 1 business day

Identification of polyvinyl chloride and polyurethane imitation leather 1 Scope This standard specifies the infrared spectroscopy and verification method for identifying whether the artificial leather and synthetic leather (hereinafter referred to as “imitation leather”) are made of polyvinyl chloride (PVC) or polyurethane (PU), and gives the analysis steps and guidelines for spectrum elucidation. This standard is applicable to the imitation leather with fabric as base material, PVC and PU as main coating materials, excluding the laminated leather with animal leather and reclaimed leather as base material. It may serve as a reference for the identification of coating materials of composite materials containing animal leather and reclaimed leather. 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 6040-2002 General rules for infrared analysis 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 imitation leather general terms of artificially synthetized animal leather substitutes which are composed of coating and fabric base materials, including artificial leather and synthetic leather, excluding laminated leather with animal leather as base material 3.2 coating structure imitation leather coating generally includes surface finishing layer and main coating layer, and the main coating may be a multi-layer composite structure. See Figure 1 for the schematic diagram for cross-sectional structure of common imitation leather ... ... ... ... Figure 1 Schematic diagram for cross-sectional structure of imitation leather 3.3 polyvinyl chloride imitation leather imitation leather mainly made of polyvinyl chloride (PVC) resin as the main coating layer 3.4 polyurethane imitation leather imitation leather mainly made of polyurethane (PU) resin as the main coating layer 3.5 PU/PVC composite imitation leather imitation leather produced with PU resin as coating surface and PVC resin as coating primer, which is also called semi-PU leather 3.6 reclaimed leather leather substitute which is made by tearing and grinding the leftover materials of leather into fibers, bonding the fibers in a mechanical and physical state with bonding agent, extruding the fibers into sheets for splitting, grinding and surface finishing 4 Reagents

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Reagents 5 Instruments and apparatus 6 Analysis steps 7 Spectrum analysis 8 Verification test 9 Identification for components of animal leather and reclaimed leather 10 Test report Annex A (Informative) Micrographs for cross section structure of several typical imitation leathers Annex B (Informative) Characteristic absorption tables and reference spectrograms Annex C (Informative) Verification test methods Annex D (Informative) Identification for components of animal leather and reclaimed leather Bibliography