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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard is a revision of QB/T 2955-2008 Casual Shoes.
In addition to a number of editorial changes, the following main technical changes have been made with respect to QB/T 2955-2008:
——the introduction is deleted (the introduction of 2008 Edition);
——the scope is amended (see Chapter 1; Chapter 1 of 2008 Edition);
——the definition of "casual shoes" is amended (see 3.1; 3.1 of 2008 Edition);
——the terms and definitions of "primary parts" and "subsidiary parts" are added (see 3.2 and 3.3);
——the requirement for superior quality are deleted (Chapter 5 of 2008 Edition);
——the requirements for shoes materials and identification are added (see 5.1.3 and 5.1.4);
——the requirements for sensory quality are amended (see 5.2; 5.2 of 2008 Edition);
——the requirements for odor are added (see 5.3);
——the requirements for bending resistance are amended (see 5.4.1; 5.3 of 2008 Edition);
——the upper pull-out strength is amended (see 5.4.4; 5.3 of 2008 Edition);
——the requirement for flexing index of innersole fiberboard is deleted (5.3 of 2008 Edition);
——the requirement for flexing resistance of sole at low temperature is added (see 5.4.7).
——the requirements for decomposable harmful aromatic amine content are amended (see 5.5.1; 5.4 of 2008 Edition).
——the requirement for free or partially hydrolyzable formaldehyde content is amended (see 5.5.2; 5.4 of 2008 Edition);
——the requirements for judgment of after-sale quality of casual shoes are deleted (5.6 of 2008 Edition);
——the inspection rules are amended (see Chapter 7; Chapter 7 of 2008 Edition);
——the requirements for pictorial markings for packaging and handling, packaging, transportation and storage are modified (see Chapter 8; Chapter 8 of 2008 Edition).
This standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of the National Standardization Technical Committee on Shoemaking (SAC/TC 305).
The previous edition of the standard superseded by this standard is as follows:
——QB/T 2955-2008
Casual Shoes
1 Scope
This standard specifies terms and definitions, classification, requirements, test methods, inspection rules, pictorial markings for packaging and handling, packaging, transportation and storage for casual shoes.
This standard is applicable to adult casual shoes for routine uses. This standard is not applicable to women's shoes with a heel height greater than 20.0 mm and heel size greater than 8.0 mm, and men's shoes with a heel height greater than 25.0 mm and heel mouth greater than 10.0 mm as well as children casual shoes
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version of the referenced document (including any amendments) apply to this document.
GB/T 251-2008 Textiles—Tests for Color Fastness—Grey Scale for Assessing Staining
GB/T 2703 Footwear Terms
GB/T 2912.1-2009 Textiles—Determination of Formaldehyde—Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method)
GB/T 3293 Chinese Shoe Last Series
GB/T 3293.1 Shoe Size
GB/T 3903.1 Footwear—General Test Methods—Flexing Resistance
GB/T 3903.2 Footwear—General Test Methods—Abrasion Resistance
GB/T 3903.3 Footwear—General Test Methods—Peeling Strength
GB/T 3903.5 Footwear—General Test Methods—Appearance Quality
GB/T 17592-2011 Textiles—Determination of the Banned Azo Colorants
GB/T 19941-2005 Leather and Fur-Chemical Tests—Determination of Formaldehyde Content
GB/T 19942-2005 Leather And Fur-Chemical Test—Determination of the Banned Azo Colorants
GB/T 21396-2008 Footwear—Test methods for whole shoe—Upper sole adhesion
QB/T 1187 Footwear—Principle of Inspection and Marking, Package, Transportation, Storage
QB/T 2224 Footwear—Performance Requirement for Uppers Low-Temperature Flexing Resistance
QB/T 2673 Footwear—Specification of Marking
QB/T 2882-2007 Footwear—Test Method for Upper Surface, Lining and Inner Pad—Friction Color Fastness
QB/T 4886 Requirements of Flexing Resistance at Low Temperature of Footwear and Sole.
3 Terms and definitions
For the purpose of this standard, the terms and definitions defined in GB/T 2703 and the following apply.
3.1
casual shoes
footwear for daily life or recreational activities. For women's shoes, the heel height is not more than 20.0mm and the heel mouth is not more than 8.0mm, while, for men's shoes, the heel height is not more than 25.0mm and the heel mouth is not more than 10.0mm.
3.2
primary parts
in general, outside and front of shoes upper
3.3
subsidiary parts
in general, inside and backside of the shoes upper
4 Classification
Casual shoes shall be divided into man and woman casual shoes by user
According to upper materials, it is divided into leather, artificial leather, synthetic leather, fabric and other materials.
5 Requirements
5.1 General requirements
5.1.1 Shoe size shall meet the requirements of GB/T 3293.1.
5.1.2 Shoe last size should meet the requirements of GB/T 3293
Note: The company shall apply GB/T 3293 reasonably. If not, it shall not expressly declare conformity with this standard. In general, quality inspection bodies do not assume responsibility for identifying such conformity.
5.1.3 Shoe materials shall meet corresponding requirements of product standard.
5.1.4 Labeling shall meet the requirements of QB/T 2673.
5.1.5 No defect that influence wearing shall exist.
5.2 Sensory quality
Sensory quality shall be in accordance with those specified in Table1. Where, items 1 to 4 are primary, and items 5 to 10 are subsidiary.
Table 1 Sensory Quality
No. Item Requirement a
1 Overall appearance The entire shoe shall be straight, flat, symmetrical, with no visible defects and color differences; the inner pad shall be flat; the inside and outside of the shoe should be clean; the bottom (bottom wall) joint shall be free from glue deficiency and failure.
2 Upper Leather, artificial leather, and synthetic leather upper: The color, thickness, length, and pattern of the corresponding parts of the same pair of shoes shall be basically the same (except for the special style design). No crazing and crack grain (except for casual shoes such as cracked leather, etc.), and no coating shedding, no decolorization, no exposed toe and white frost, no damage. Primary parts shall be free from obvious looseness.
Textile uppers: The color and pattern of the corresponding parts of the same pair of shoes are basically the same (except for special design styles); there should be no turbulent yarn, skipping yarn and obvious stains; the subsidiary parts are allowed to have two areas of defect ≤ 10mm2;
Other materials shall be treated like leather or textiles
3 Counter and toe puff Be correct, flat, fit and smooth, symmetrical and in place, and shall not shrink and deform.
4 Seaming Regular and tight
5 Flanging top line Basically neat, uniform, sleek, without clipping or cracking
6 Stitching, sewing Stitching: lines shall run neatly, and needle codes shall uniform; the bottom line shall be uniform in tightness; the primary part shall not have jumper, double stitch (except for back stitching intended by process design), broken stitches, turning stitches, split stitches and suture line derailment, etc. The subsidiary part for each shoe is allowed to have jumper and double stitch, which shall not exceed 2 for each shoe;
Sewing: The stitches shall be neat, and the needle code shall be uniform. There shall be no missing stitches, broken stitches, or chaotic stitches.
7 Outer soles The color and pattern of the corresponding parts of the outer soles of the same pair of shoes shall be basically the same (except for the special style design). Slight defects are allowed.
8 Thickness of the sole The thickness of half sole stressing against the ground shall not be less than 3.0mm except the thickness of pattern.
9 Accessories Accessories shall be firmly assembled, basically symmetric, uniform in colors, and free of significant sensory defects.
10 Dimensions of upper b The toe lasting length difference between the shoes of the same pair shall be ≤ 2.5mm. The counter lasting height difference between the shoes of the same pair shall be ≤ 2.5mm. The counter lasting height difference between the boots of the same pair shall be ≤ 3.5 mm.
11 Dimensions of sole c The length difference between the soles of the same pair shall be ≤3.0 mm, the width difference shall be ≤2.0 mm, and thickness difference shall be ≤1.0mm
a The sensory quality defects not listed in Table 1 shall be treated according to similar items in Table1.
b If the toe lasting length difference between the shoes of the same pair exceeds 4.0 mm, or the counter lasting height difference between the shoes of the same pair exceeds 4.0 mm, or the counter lasting height difference between the boots of the same pair exceeds 5.0 mm, it is considered a serious defect.
c If the length difference between the outsoles of the same pair exceeds 4.0 mm, or the width difference exceeds 3.0 mm, it is considered a serious defect.
5.3 Odor
The grade of odor shall not be greater than 3.
5.4 Physical and mechanical properties
5.4.1 Bending resistance
5.4.1.1 If the thickness at sole flexing position (including pattern) is greater than 25mm, bending resistance test can be obviated.
Note: The thickness at sole flexing position includes the thickness of the inner pad, but not including the thickness of the bottom higher than the inner pad.
5.4.1.2 After testing according to 6.4, the length of the cut shall not exceed 20.0 mm. After folding, new cracks shall not exceed 3 and the length of a single crack shall not exceed 5.0 mm. At the same time, there shall be no crazing and cracking in upper, or glue failure in bottom and sole shall not be longer than 5.0mm. The sole shall be free of peeling off. There shall be no cracks along the binding. No signs of leaking and collapse shall exist in air (liquid) pads.
5.4.2 Abrasion resistance of outsole
5.4.2.1 Abrasion resistance test is obviated for natural leather outsole.
5.4.2.2 The abrading length shall not be greater than 14.0 mm.
5.4.3 Peeling strength
5.4.3.1 Casual shoes made through sewing, stitching, gluing and special processes (including riveting, etc.) do not have peeling strength test.
5.4.3.2 Peeling strength shall not be less than 40 N/cm. If the material tears and the peeled layer is not separated, the peeling strength shall not be less than 30 N/cm.
5.4.4 Upper pull-out strength
5.4.4.1 Casual shoes made through sewing, stitching, gluing and special processes (including riveting, etc.) do not have upper pull-out strength test.
5.4.4.2 Shoes with peel strength undetectable shall measure the upper pull-out strength.
5.4.4.3 The pull-out strength of upper shall not be less than 70 N/cm. If the material tears and the joint is not separated, the pull-out strength of upper shall not be less than 30 N/cm.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements
6 Test methods
7 Inspection rules
8 Pictorial markings for packaging and hndling, packaging, transportation and storage
