Detail of GB/T 34443-2017

Introduction of GB/T 34443-2017

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by China National Light Industry Council. This standard is under the jurisdiction of the National Technical Committee on Plastic Products of Standardization Administration of China (SAC/TC 48). Terminology of Artificial Leather and Synthetic Leather 1 Scope This standard specifies the terms and definitions for artificial leather and synthetic leather in terms of product name, process, sensory characteristic, appearance evaluation, and performance inspection. This standard is applicable to artificial leather and synthetic leather. 2 Product Name 2.1 artificial leather the composite material which is produced by forming a synthetic resin film (such as polyvinyl choride, polyurethane) on the woven fabric, knitted fabric or non-woven fabric using rolling, flow casting, coating and dry processes 2.2 synthetic leather the composite material which is produced by forming a micro-porous polyurethane resin layer on woven fabric, knitted fabric or non-woven fabric using wet process first, and then subject to dry process and post-treatment process 2.3 bond leather the composite material produced by laminating artificial leather, synthetic leather or its semi-finished products and other materials 2.4 microfiber synthetic leather the synthetic leather made of superfine fibre base cloth 2.5 water-based polyurethane synthetic leather the synthetic leather made with water-based polyurethane as the resin component 2.6 solvent-free artificial leather artificial leather with 100% solid polyurethane resin as the main component 3 Process 3.1 wet-processing the production process which solidifies the resin on the base cloth through coagulation of water solution, washing, etc. 3.2 dry-processing the production process which solidifies the resin on the carrier through heating 3.3 dipping the process which allows the pulp penetrating or extruded into the base cloth structure 3.4 coating the process applying the pulp on the carrier 3.5 bonding the process laminating multiple material layers 3.6 wet bonding directly laminating without heating the resin of bonding layer 3.7 damp-dry bonding laminating after the resin of bonding layer is preheated to certain dryness 3.8 dry bonding laminating after the resin of bonding layer is heated to soft state 3.9 curing the course where the material system is sufficiently reacted under certain conditions 3.10 spraying the process where the material is sprayed on the semi-finished product under pressure effect 3.11 roll coating the process where the rotatory roller is used to coat the pulp on the surface of semi-finished product 3.12 buffing the process grinding the surface of semi-finished product 3.13 tumbling the process which makes pattern formed or more concave-convex on the surface of artificial leather or synthetic leather under repeated mechanical forces such as circumnutating, vibration and beating, under certain conditions 3.14 embossing mechanically compressing the artificial leather or synthetic leather 3.15 printing the process where the pulp is printed on the surface of artificial leather or synthetic leather by using the molds. 3.16 polish the process where the surface of artificial leather or synthetic leather is partly polished by mechanical or friction means 3.17 gilding the process where the pattern on transfer film mold is stamped onto the surface of artificial leather or synthetic leather 3.18 punching the process where the hole is drilled on artificial leather or synthetic leather by mechanical means 3.19 finishing a general term for a series of processes, including spraying, roll coating, embossing and printing, which are intended to finish the surface of artificial leather or synthetic leather to improve the pattern effect 3.20 alkali deweighting the process where toluene and alkali liquor are used to dissolve the marine phase or island phase in island fiber 3.21 rolling the process where the materials are rolled to film by mechanical means 3.22 casting the process where the fondant is spread and shaped to film by mold 4 Sensory Characteristics 4.1 pattern surface pattern and texture 4.2 color the visual characteristic formed by light illuminating on the surface 4.3 gloss the effect which is formed by reflection of the light on the surface. 4.4 softness the property that the three-dimensional shape of artificial leather or synthetic leather is easily changed 4.5 elasticity the property that original shape can be rapidly recovered after the three-dimensional shape of artificial leather or synthetic leather changes. 4.6 fullness the feeling of satiation, fullness, denseness and elasticity at grasping artificial leather or synthetic leather 4.7 flexibility the property that the artificial leather or synthetic leather is not broken or cracked after repeated rubbing 4.8 hand feeling the feeling of softness, fullness, elasticity and flexibility via touching, feeling, pulling, pinching and rubbing, etc. 4.9 peculiar smell an unpleasant smell 5 Appearance Evaluation 5.1 aberration of color the difference between the color of local surface and that of the subject or the color of the whole and that of the identified sample 5.2 color streaks the phenomenon that the surface-distributed strip color is different from the color of the subject 5.3 color stain the phenomenon that local or dispersed color of surface or surface effect is uneven 5.4 bright streak the wale with extremely bright gross in comparison of local surface with the adjacent normal surface 5.5 dark streak the wale with extremely dark gross in comparison of local surface with the adjacent normal surface

Contents of GB/T 34443-2017

Foreword i 1 Scope 2 Product Name 3 Process 4 Sensory Characteristics 5 Appearance Evaluation 6 Performance Inspection 7 Accessory Materials 8 Others Annex A (Informative) Common Name and Abbreviation in Artificial Leather and Synthetic Leather Industry Index