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Similar standardsGB/T 22756-2008: Leather sandals---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT22756-2008GB/T22756‐2008 Wayne Zheng et al. GB ICS 61.060 Y 7.8 NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA Leather Sandals 皮凉鞋 Issued on: DECEMBER 30, 2008 Implemented on: SEPTEMBER 01, 2009 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of China. Table of ContentsForeword... 3 1 Scope... 4 2 Normative References... 4 3 Product Classification... 5 4 Technical Requirements... 5 5 Inspection Methods... 10 6 Inspecting Rules... 12 7 Packaging, Transportation and Storage... 14 Appendix B (Informative) After-Sale Quality Judgment of Leather Sandals... 18ForewordThis standard is formulated based on the previous industry standard QB/T 2307-199 "Leather Sandals". Compared with QB/T 2307- 1997, the main changes are as follows. - The application scope was specified; - The recommended thickness value of main position was deleted; - The appearance quality was changed into sensory quality. And some inspection items were added, deleted and modified; - The index of physical and mechanical properties was adjusted; - The color fastness to rubbing of lining and insole was added; - Quantity limitation of limited substance was added; - Prohibitive provisions about defects which might affect wearing were added into the technical requirements. Appendix A of this standard is normative, and Appendix B is informative. This standard was proposed by China National Light Industry Council. This standard shall be under the jurisdiction of National Technical Committee on Shoes of Standardization Administration Leather Shoes Technical Committee (SAC/TC 305/SC 1). Drafting organizations of this standard. China Leather and Footwear Industry Research Institute, New Belle Footwear (Shenzhen) Co., Ltd., Fulin Shoes Industrial Co., Ltd., Foshan Saturday Shoes Co., Ltd, and QingDao Hengda Co., Ltd. Chief drafting staffs of this standard. Qi Xiaoxia, Zhang Weijuan, Song Xiaowu, Lin Heshi, Li, Shan Cunli, and Gao Shanfang. Since the implementation date of this standard, the previous light industry standard QB/T 2307-1997 "Leather Sandals" shall be abolished. Leather Sandals1 ScopeThis standard specifies the technical requirements, test methods, inspection rules, packing, transportation and storage of leather sandals which are made of natural leather, artificial leather, synthetic leather, textiles or multiple materials upper; and which are manufactured by processes of gluing, sewing, mould pressing, vulcanizing, injection molding and grouting etc. This standard is applicable to the leather sandals for general wearing. For sandals with uppers made of textiles or other materials and sandals manufactured by equivalent process, it may also take this standard as reference.2 Normative ReferencesThe following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding content of correction), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard. GB/T 230.1 Metallic Rockwell Hardness Test-Part 1.Test method (A, B, C, D, E, F, G, H, K, N, T) (GB/T 230.1-2004, ISO 6508-1.1999, MOD) GB/T 532 Rubber, Vulcanized or Thermoplastic-determination of Adhesion to Textile Fabric (GB/T 532-2008, ISO 36.2005, IDT) GB/T 2912.1 Textiles--Determination of Formaldehyde--Part 1.Free and Hydrolyzed Formaldehyde (Water Extraction Method) GB/T 3293 Chinese Shoe Sizing and Last Systems GB/T 3293.1 Shoe Sizes (GB/T 3293.1-1998, idt ISO 9407.1991) GB/T 3903.1 General Test Method for Footwear-Test Method of Flexing Resistance GB/T 3903.1 General Test Method for Footwear-Test Method of Abrasion Resistance GB/T 3903.3 General Test Method for Footwear-Test Method of Peeling Strength GB/T 3903.4 General Test Method for Footwear-Test Method of Hardness GB/T 3903.5 General Test Method for Footwear-Test Method of Appearance GB/T 11413 Test Method for Bond Strength of Leather Shoe Heels GB/T 17592 Textiles-Determination of the Banned Azo Colourants GB/T 19941 Leather and Fur-Chemical Tests-Determination of Formaldehyde Content (GB/T 19941-2005, ISO/TS 17226.2003, MOD) GB/T 19942 Leather and Fur-Chemical Tests-Determination of Banned Azo Colourants (GB/T 19942-2005, ISO/TS 17234.2003, MOD) QB/T 1472 Flexing Index of Shoes Fibreboard QB/T 1813 Test Methods for Longitudinal Rigidity of Leather Shoes Shanks (QB/T 1813-2000, eqv BS 5131/4.18.1995) QB/T 1917 Shanks for Leather Footwear QB/T 2673 Leather Shoes -- Rules for Determination of the Suitability QB/T 2882-2007 Footwear-Test Methods for Uppers Linings and Insocks-colour Fastness to Rubbing3 Product ClassificationAccording to wearing objects, it can be classified into male and female sandals. According to style, it can be classified into belt loop style, close toe & close back style, hollow, front-hollow, and back-hollow style, etc. According to the upper materials, it can be classified into natural leather (top layer leather and split leather), artificial leather, synthetic leather, textiles, and multiple materials sandals.4 Technical Requirements4.1 General Requirements 4.1.1 The shoe size shall meet the requirements of GB/T 3293.1. 4.1.2 The shoe last size shall meet the requirements of GB/T 3293. 4.1.3 The product marking shall meet the requirements of QB/T 2673. 4.2 Sensory quality requirements Sensory quality requirements are shown in Table 1, No. 1~5 of the table are main items while No. Item Superior products Qualified product 1.5mm and width tolerance is 1.0mm. 8 Upper size The front upper (upper band) length tolerance of the same pair of shoes is 1.5mm while the back upper height (upper band length) tolerance is 2.0mm. The front upper (upper band) length tolerance of the same pair of shoes is 1.5mm while the back upper height (upper band length) tolerance is 2.5mm. 9 Folding edge along the mouth Basically regular, uniform and smooth, without exposed notch and gape 10 Outsole thickness The thickness of forefoot action position shall not be less than 3.0mm when the figure has been deducted while the heel action position shall not be less than 5.0mm 11 Accessory Assembled firmly and basically symmetric. Uniform in color and lustre and without obvious sensory defects. The surfaces of metal pieces shall be smooth and without sharp edge and sharp tip. Zippers shall be smooth and both ends of the zipper shall free from rags Note 1.if the outsole length tolerance of shoes of same pair exceeds 4.0mm and width tolerance exceeds 3.0mm, the shoes belong to serious defects. Note 2.if the toe upper (upper band) length tolerance of shoes of same pair exceeds 4mm while the back counter height (upper band length) tolerance exceeds 4mm, it belongs to serious defects. 4.3 Requirements of physical and mechanical properties index 4.3.1 Flexing resistance 4.3.1.1 Test conditions. Pre-cut of 5mm and continuously folding for 40000 times. 4.3.1.2 Technical index. The crack length of superior products folded-cuts shall be less than or equal to 10.0mm. New cracks shall not be available after folded. After folded, crazing of leather, broken grain or upper sole chip shall not appear on the upper. Crack length of the qualified products folded cuts shall be less than or equal to 20.0mm. Length of new cracks after folded shall be less than or equal to 5.0mm and shall not be more than 3 places. The folded upper shall free from crazing of leather, broken grain or upper sole chip. 4.3.1.3 40000 times of flexing tests without cuts shall be carried out on the natural leather outsole. Single crack shall not be greater than 5mm and the number shall not be more than 3. 4.3.1.4 Flexing resistance can be omitted under the conditions of shoe size less than 230mm or the thickness of folding position greater than 25mm. 4.3.2 Abrasion resistance 4.3.2.1 Test conditions. Impose a pressure of 4.9N and keep a continuous abrasion for 20min. 4.3.2.2 Technical index. Superior products shall be less than or equal to 10.0mm while the qualified products shall be less than or equal to 14.0mm. 4.3.2.3 The abrasion resistance is not applicable to natural leather outsole. Note. As for footwear products, materials of the insole, inner-pad and lining which directly contact with foot are Category B; and the materials of upper and outsole and so on are Category C. However, under the conditions that shoes have no lining, outsole has no insole, the upper or outsole has a direct contact with foot, then the materials of... ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
