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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces QB/T 2880-2007 Children's Leather Shoes.
In addition to a number of editorial changes, the following technical changes have been made with respect to QB/T 2880-2007.
——The terms and definitions of "primary" and "subsidiary" are added;
——Appearance quality is modified;
——The measurement-omitting condition and performance index of flexing resistance are modified;
——The requirements and test methods for outsole hardness are modified;
——The requirements and test methods for the pull-out strength of upper are added;
——Safety performance requirements are added;
——Inspection rules are modified;
——Inspection methods for decoloration are added in annex;
——Contents of after-sales service term and treatment methods are modified.
This standard was proposed by China National Light Industry Council.
This standard was under the jurisdiction of SAC/TC 305/SC 1 Leather Shoes Subcommittee of National Technical Committee 305 on Footwear of Standardization Administration of China.
The previous edition of this standard is as follows:
——QB/T 2880-2007.
Children’s Leather Shoes
1 Scope
This standard specifies the terms and definitions, classification, requirements, test methods, inspection items and judgement rules as well as marking, packaging, transportation and storage of children's leather shoes with main upper of natural leather, artificial leather and synthetic leather and fabricated via processes as gluing, sewing, molding, vulcanizing, injection molding and filling.
This standard is applicable to normal-use children's leather shoes and infants' leather shoes.
Children's leather shoes with textile or other materials upper and fabricated via equivalent fabrication process may also refer to the provisions of this standard.
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 2703 Footwear - Vocabulary
GB/T 3293 Chinese Shoe Sizing and Last Systems
GB/T 3293.1 Shoe Sizes
GB/T 3903.1-2008 Footwear - General Test Methods - Flexing Resistance
GB/T 3903.2-2008 Footwear - General Test Methods - Abrasion Resistance
GB/T 3903.3-2011 Footwear - General Test Methods - Peeling Strength
GB/T 3903.4-2008 Footwear - General Test Methods - Hardness
GB/T 3903.5-2011 Footwear - General Test Methods - Appearance Quality
GB/T 20991-2007 Personal Protective Equipment - Test Methods for Footwear
GB/T 21396-2008 Footwear - Test Methods for Whole Shoe - Upper Sole Adhesion
GB 30585 Safety Technical Specifications for Children's Footwear
HG/T 2489-2007 Cellular for Shoes - Determination of Hardness
QB/T 1187 Footwear - Principle of Inspection and Marking, Package, Transportation, Storage
QB/T 1472-2013 Flexing Index of Fiberous Board for Footwear
QB/T 2224-2012 Footwear - Performance Requirement for Uppers Low-temperature Flexing Resistance
QB/T 2673 Footwear - Specification of Marking
QB/T 2882-2007 Footwear - Test Methods for Uppers, Linings and Insocks - Colour Fastness to Rubbing
QB/T 4862-2015 Midsoles for Footwear
3 Terms and Definitions
For the purposes of this document, the following terms and definitions given in GB/T 2703 and the following ones apply.
3.1
infants’ leather shoes
leather shoes with shoe size of 170 or less for infants of or under 3 years old.
3.2
children's leather shoes
leather shoes with shoe size greater than 170 but no greater than 250 for children of 3 years old to 14 years old.
3.3
primary
Generally, they refer to outer side of upper, forepart, counter-heel and toe-puff parts.
3.4
subsidiary
Generally, they refer to inner side and backside of upper.
4 Classification
Shoes are classified into children's leather shoes and infants' leather shoes according to the using objects.
5 Requirements
5.1 General requirements
5.1.1 The shoe size shall meet the requirements of GB/T 3293.1.
5.1.2 The shoe last size shall meet the requirements of GB/T 3293.
5.1.3 The product marking shall meet the requirements of QB/T 2673.
5.1.4 The defect which affects wearing shall be avoided.
5.1.5 The after-sales quality judgment of children's leather shoes is detailed in Annex A.
5.2 Appearance quality
Appearance quality shall be in accordance with those specified in Table 1. In which, Items 1~5 and serious defect items are primary items, Items 6~10 are subsidiary items.
Table 1 Appearance Quality
No. Item Requirements
1 Overall appearance Flat, smooth, stable, clean and symmetric (except for special designed style). The lasting shall be flat and smooth. Insoles shall be firm, flat and smooth, without obvious appearance defects.
2 Upper Leather, synthetic leather and artificial leather upper: the colour and luster, thickness, pattern and villi crudeness or fineness for the same positions of the same pair of shoes shall be basically consistent (except for special designed style). Minor defects are allowable, but crazing and crack grain (except for special upper materials as crack leather), exposure of lasting margin, white frost and disability are not allowed. In subsidiary, slight loose grain textile upper is allowed; primary shall be free from serious defects.
3 Counter-heel and toe-puff For the leather shoes with counter-heel and toe-puff, the counter-heel and toe-puff shall be upright, flat, smooth, symmetric, properly positioned and free from shrinkage deformation.
4 Heel The assembly shall be firm, even & straight and symmetric. Heels shall be uniform in size, height, colour and luster.
5 Seam allowance Neat and tight.
6 Flanging topline Basically neat, uniform, round, smooth and free from shear mouth exposure or split.
7 Accessories The assembly is firmly and basically symmetric. Without obvious appearance defects. Metal button, metal loop and various metal pieces have smooth surface. The zipper is smooth and without burrs on both ends.
8 Upper stitching The thread is regular and stitches are uniform. The degree of tightness of underside and upper threads shall be basically consistent. The primary shall be free from skipped stitching, and one slip stitch or double stitch (except for the back stitching in process design) is allowed in subsidiary but shall not exceed two points for each shoe.
9 Outsole Except for special designed style, the colour and luster, pattern and thickness at the same position of the outsoles of the same pair of shoes shall be basically consistent. Minor defects are allowed for the outsoles of leather shoes.
Thickness of the outsole of forefoot action position (after subtracting pattern) is greater than or equal to 3.0mm.
10 Size 1 For the same pair of shoes, the allowable length tolerance of foreparts is less than or equal to 2.0mm, the allowable height tolerance of heel parts is less than or equal to 2.0mm; for boots, the allowable height (<205mm) tolerance of heel part is less than or equal to 3.0mm, and the allowable height (≥205mm) tolerance is less than or equal to 4.0mm.
2 For the same pair of shoes, the allowable length tolerance of outsoles is less than or equal to 2.0mm, the allowable width tolerance is less than or equal to 1.5mm, and the allowable thickness tolerance is less than or equal to 1.0mm.
3 For the same pair of shoes, the allowable height tolerance of heels is less than or equal to 1.5mm and the allowable tolerance of toe springs is less than or equal to 2.0mm.
4 The tilting of back seam is less than or equal to 2.0mm.
Note 1: For shoe size ≤150mm, it is not required to assess the thickness of outsole of forefoot action position after subtracting pattern.
Note 2: The appearance quality defects not listed in the table are treated according to similar items in the table.
Note 3: Any of the following defects, if appeared, is severe defect: for the same pair of shoes, the allowable length tolerance of foreparts exceeds 4.0mm, the allowable height tolerance of heel parts exceeds 4.0mm; for boots, the allowable height (<205mm) tolerance of heel part exceeds 5.0mm,and the allowable height (≥205mm) tolerance exceeds 7.0mm; for the same pair of shoes, the allowable length tolerance of outsoles exceed 4.0mm or the allowable width tolerance exceeds 3.0mm.
5.3 Requirements for physical and mechanical performance (not required for infants' leather shoes)
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Requirements
6 Test Methods
7 Inspection Items and Judgement Rules
8 Inspection Rules, Marking, Packaging, Transportation and Storage
Annex A (Informative) After-sales Quality Judgment of Children's Leather Shoes
