QB/T 4546-2021 English PDF (QBT4546-2021)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click QB/T 4546-2021
Historical versions: QB/T 4546-2021
Preview True-PDF (Reload/Scroll if blank)

QB/T 4546-2021: Children leather sandals
QB/T 4546-2021
QB
LIGHT INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 61.060
CCS Y 78
Replacing QB/T 4546-2013
Children’s leather sandals
儿童皮凉鞋
ISSUED ON: DECEMBER 02, 2021
IMPLEMENTED ON: APRIL 01, 2022
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Product classification ... 7
5 Requirements ... 7
6 Test method ... 11
7 Judgment rules ... 13
8 Inspection rules, marking, packaging, transportation, storage ... 14
Appendix A (Informative) After-sales quality assessment of children's leather sandals
... 15
Children’s leather sandals
1 Scope
This document specifies the requirements, judgment rules, inspection rules, marking,
packaging, transportation, storage of children's leather sandals; describes the
corresponding test methods; defines relevant terms and definitions; gives product
classifications.
This document applies to the production, inspection, and sales of infants’ leather sandals
and children's leather sandals for general wear, with the upper (surface) made of natural
leather, artificial leather, synthetic leather, textiles as the main materials, manufactured
through various processes.
This document does not apply to infants’ leather sandals and children's leather sandals
with special functions.
Infants’ leather sandals and children's leather sandals with upper (surface) made of other
materials can refer to this document for implementation.
2 Normative references
The contents of the following documents constitute essential clauses of this document
through normative references in the text. Among them, for dated references, only the
version corresponding to that date applies to this document; for undated references, the
latest version (including all amendments) applies to this document.
GB/T 2703 Footwear - Vocabulary
GB/T 3903.1 Footwear - Test methods for whole shoe - Flexing resistance
GB/T 3903.2-2017 Footwear - Test methods for whole shoe - Abrasion resistance
GB/T 3903.3-2011 Footwear - General test methods - Peeling strength
GB/T 3903.4-2017 Footwear - Test methods for whole shoe - Hardness
GB/T 3903.5 Footwear - General test methods - Appearance quality
GB/T 4841.3 Color cards of standard depths for dyeing with dyestuffs 2/1, 1/3, 1/6,
1/12, 1/25
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/T 28011 Shanks for footwear
GB/T 38011 Footwear - Test methods for whole shoe - Pull-out force of upper bands
HG/T 3689-2014 Test method of discoloration for footwear
QB/T 1187 Footwear - Principle of inspection and marking, package, transportation,
storage
QB/T 1472 Flexing index of fiberous board for footwear
QB/T 2673 Labeling for footwear product
QB/T 2882-2007 Footwear - Test methods for uppers, linings and insoles - Color
fastness to rubbing and bleeding
QB/T 4862 Midsoles for footwear
3 Terms and definitions
The terms and definitions as defined in GB/T 2703, as well as the following terms and
definitions, apply to this document.
3.1
Infants' leather sandals
Leather sandals with shoe size not exceeding 170, generally suitable for infants and
young children aged 3 years and below.
3.2
Children's leather sandals
Leather sandals with shoe size greater than 170, generally suitable for children aged
3 to 14.
3.3
Closed sandals
The upper surface is basically complete, without large areas of perforation, and is
mostly made of hollow, narrow leather strips and woven materials to meet the
requirements of coolness and breathability.
3.4
Open sandals
One or two of the upper parts of the front tip, inner and outer waist, and heel are
incomplete, and the upper surface forms a large perforation.
Note: The open sandals can be front opening, rear opening, middle opening, front closed
rear opening, front and rear closed whilst middle opening, etc.
3.5
Stripe sandals
The upper surface is made of strips of various widths through sewing or knitting.
Note: The stripe sandals are more exposed than the open sandals; they are divided into
various specific forms, such as front straps and back straps according to the position of the
straps.
4 Product classification
4.1 According to the upper material, it can be divided into natural leather (top leather,
split leather), artificial leather, synthetic leather, textiles, mixed materials and other
uppers for infants’ leather sandals and children's leather sandals.
4.2 According to the upper structure, it can be divided into closed leather sandals and
children's leather sandals, open leather sandals and children's leather sandals, stripe
leather sandals and children's leather sandals.
4.3 According to the user, it can be divided into children's leather sandals and infants’
leather sandals.
5 Requirements
5.1 General requirements
5.1.1 Product identification shall meet the requirements of QB/T 2673.
5.1.2 After-sales quality judgment is shown in Appendix A.
5.2 Sensory quality
Sensory quality requirements are shown in Table 1. Items 1 ~ 5 are the primary items;
items 6 ~ 9 are the subsidiary items.
d) Other cases that are not suitable for testing the upper and sole peeling strength.
5.3.3.3 The upper and sole peeling strength shall not be less than 40 N/cm.
5.3.3.4 If the material is torn and the peeling layer is not opened during the upper and
sole peeling strength test, the peeling strength shall not be less than 30 N/cm.
5.3.4 Outsole hardness
5.3.4.1 The hardness of the solid outsole shall be 45 Shore A ~ 65 Shore A. The hardness
of the microporous foam outsole shall be 45 Shore C ~ 65 Shore C. The composite
outsole shall meet the hardness requirements of the solid outsole and/or microporous
foam outsole according to the type of material.
5.3.4.2 The outsole hardness of natural leather outsoles and children's leather sandals
with an outsole thickness of less than 3 mm is not measured.
5.3.5 Upper strap pull-out strength (or upper strap pull-out force)
The upper strap pull-out strength of children's leather sandals manufactured by bonding
process shall not be less than 70 N/cm. If the material is torn and the upper and sole
joints are not pulled apart, the upper strap pull-out strength shall not be less than 30
N/cm. The upper strap pull-out force of children's leather sandals manufactured by non-
bonding process (rivet nailing, etc.) shall not be less than 70 N.
5.3.6 Fiberboard flex index
Fiberboard flex index shall not be less than 1.9.
5.3.7 Lining and insole friction color fastness
The lining and insole friction color fastness staining grade shall not be less than grade
3 (gray scale)
5.3.8 Shank
5.3.8.1 For children's leather sandals with a shoe size of 200 or more, a heel height of
more than 20 mm and a heel opening height of more than 8 mm, it shall have a shank
or other rigid support material. The length, longitudinal stiffness, hardness, bending
performance of the shank shall meet the requirements of GB/T 28011.
5.3.8.2 There is no requirement for the shank of children's leather sandals with injection
molded midsoles. The longitudinal stiffness of injection molded midsoles shall meet
the requirements of QB/T 4862.
5.3.8.3 The shank of wedge heels is not tested; the shank of wooden or hard plastic