QB/T 4546-2021 (QB/T4546-2021, QBT 4546-2021, QBT4546-2021) & related versions
QB/T 4546-2021: PDF in English (QBT 4546-2021)
QB/T 4546-2013
QB
LIGHT INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 61.060
Classification code. Y78
File No.. 43568-2013
Children’s leather sandals
儿童皮凉鞋
ISSUED ON. DECEMBER 31, 2013
IMPLEMENTED ON. JULY 01, 2014
Issued by. Ministry of Industry and Information Technology
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Classification of products ... 6
5 Requirements ... 6
6 Test method ... 11
7 Inspection rules ... 14
8 Packaging, transportation and storage ... 16
Annex A ... 18
Annex B... 19
Foreword
This standard is drafted according to the rules provided in GB/T 1.1-2009.
This Standard was proposed by China Light Industry Council.
This Standard shall be under the jurisdiction of National Standardization Technical
Committee leather footwear sub-technical committee (SAC/TC 305/SC1).
Drafting organizations of this standard. National Center for Footwear Quality Supervision
and Inspection (Wenzhou), Zhejiang Red Dragonfly Footwear Co Ltd., Shanghai
Xiongmeimao Children's Products Co., Ltd., New Belle Footwear (Shenzhen) Co., Ltd.
AND Qibu (China) Children's Products Co., Ltd.
Main drafters of this standard. Mao Xiaohui, Yang Zhimin, Wang Jianbin, Shen Lizhu,
Song Xiaowu, Zhou Jianzhang, Wang Fa and Zhu Li.
Children’s Leather Sandals
1 Scope
This Standard specifies children’s leather sandals’ terms and definitions, product
classification, requirements, test methods, inspection rules as well as packaging,
transportation and storage.
This Standard applies to children’s leather sandals made of different processes of which
the uppers (bands) surface is made of natural leather, artificial leather, synthetic leather
and textile material.
2 Normative references
The following documents are indispensable for application of this document. For the dated
documents so quoted, only the dated versions apply to this document. For the undated
documents so quoted, the latest versions (including all modification sheets) apply to this
document.
GB/T 2703 Footwear - Vocabulary
GB/T 2912.1-2009 Textiles - Determination of formaldehyde - Part 1. Free and
hydrolyzed formaldehyde (water extraction method) (ISO 14184-1.1998, MOD)
GB/T 3293-2007 Chinese last systems
GB/T 3293.1 Shoes sizes (GB/T 3293.1-1998, IS0407.1991, IDT)
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 3903.5-20l 1 Footwear - General test methods - Appearance quality
GB 6675-2003 National safety technical code for toys (ISO 8124.1.2000,
IS08124.2.1994, IS08124-3.1997, MOD)
GB/T 17592-2011 Textiles - Determination of the banned azo colourants
GB/T 19941-2005 Leather and fur - Chemical tests - Determination of formaldehyde
content(ISO/TC 17226.2003, MOD)
GB/T 19942-2005 Leather and fur - Chemical tests - Determination of banned azo
colourants (ISO/TC 17234.2003, MOD)
GB/T 22807-2008 Leather and fur - Chemical tests - Determination of chromium VI
content
GB 28011-2011 Shanks for footwear
QB/T 1472 Flexing index of fiberous board for footwear
QB/T 2673 Footwear - Specification of marking
QB/T 2709-2005 Leather - Physical-mechanical tests - Determination of thickness (ISO
2589.2002, MOD)
QB/T 2882-2007 Footwear - Test methods for uppers linings and insocks - Colour
fastness to rubbing (ISO 17700.2004, IDT)
QB/T 4340-2012 Footwear - Chemical test method - Total heavy metal content -
Inductively coupled plasma emission spectroscopy
HG/T 2877-1997 Determination of pull-out force of upper bands from bottom of slippers
or sandals
3 Terms and definitions
The following terms and the definitions defined in GB/T 2703 apply to this document.
3.1
Infant’s leather sandals
Leather scandals for infants at the age of 3 or below, of which the shoe size is not more
than 170 mm.
3.2
Children’s leather sandals
Leather scandals for children above the age of 3 and under 14, of which the shoe size is
not more than 250 mm.
3.3
Closed sandals
2.8mm
1) For shoe size ≤ 25 mm, the positions of force at front half outsoles can be exempted from
assessment on pattern-deduction thickness.
5.3 Odor
Odor rating is not greater than grade 2.
5.4 Total thickness of shoe upper-band
Not less than 1.0 mm.
5.5 Physical-mechanical property (infants’ lather sandals are not tested)
5.5.1 Folding-resistant property
5.5.1.1 Test conditions. Pre-cut 5 mm, 40,000 times of continuous folding.
5.5.1.2 Technical indexes of folding-resistant property. Length of cut gap after folding is
not greater than 20.0 mm. New crack length after folding is not greater than 5.0 mm; there
shall be at most 3 new cracks after folding. After folding, upper shall be free of crazing and
facture; upper-sole shall be free of glue failure.
5.5.1.3 Natural leather outsoles shall be conducted for non-cut hard fold test for 40,000
times; single crack shall not be greater than 5 mm; there shall be at most 3 cracks. After
folding, upper shall be free of crazing and facture; upper-sole shall be free of glue failure.
5.5.1.4 Folding-resistant property is not tested if shoe size is below 230 mm; for thickness
of shoe sole’s folding portion that is more than 25 mm, or the folding portion of shoe sole
is made from hard material, it is not subjected to folding-resistant property.
5.5.2 Wearing-resistant property
5.5.2.1 Test conditions. Apply a pressure of 4.9 N; wear continuously for 20 min.
5.5.2.2 Wearing resistance technical specifications. Wear-scare length is not greater than
15.0 mm.
5.5.2.3 Natural leather outsoles are not tested on wearing-resistant property.
5.5.3 Upper-sole peeling-strength
5.5.3.1 Test conditions. Blade width is (10±0.05) mm.
5.5.3.2 For children’s leather sandals that are manufactured through non-adhesive
(including sticky seam) process, peeling-strength is not tested.
5.5.3.3 For children’s leather sandals (excluding composite sole) of which the thickness of
6 Test method
6.1 Sensory quality
Inspect according to GB/T 3903.5-2011.
6.2 Peculiar smell
6.2.1 Test equipment
Dryer. diameter is 240mm (shoe size is 200mm and below), diameter is 300mm (shoe
size > 200mm ~ 250mm).
6.2.2 Test environment
Test shall be carried out in environment at here the gas is distributed freely; adjustment
space shall be ideal as possible.
6.2.3 Judging personnel
There shall be at least 3 personnel. They shall be the professionals who have been
trained and evaluated, without smell defects. Heavy smokers, personnel who use strong
perfume-cosmetics or after-drinking are not qualified for judging.
6.2.4 Number of samples
Two pairs.
6.2.5 Test procedures
6.2.5.1 Clean and dry the vacuum drier to make it tasteless.
6.2.5.2 Respectively put each shoe into vacuum dryer; apply cover; stand at room
temperature for 24 h.
6.2.5.3 During peculiar smell judgment, lid is removed to form an opening of 20 mm; test
personnel moves his head closely to the test vessel (at a distance of about 15 cm); then
flap slowly with hand; slowly absorb the gas in vacuum dryer; the time is not more than 5
s.
6.2.5.4 For the remaining 3 shoes, repeat the steps in 6.2.5.3. Interval between two tests
is 2 min.
6.2.6 Judgment of test results
Judgment of peculiar smell on each shoe shall conform to the provisions in Table 4. Adopt
the opinions of over half judging personnel as the assessment result of that shoe; take the
6.9.3 Clamp moving speed. (25±5) mm/min.
6.9.4 Environmental temperature. (23±2)°C.
6.9.5 Upper and lower clamps are respectively for shoe sole (upper-sole’s bonding course
shall not be clapped) and shoe upper-band.
6.9.6 Maximum force value applied to pull shoe upper and sole open is called pullout force;
take the arithmetic mean of two test results as the test result. Results of each shoe are
separately indicated.
6.9.7 Calculation of upper-band pullout force.
Where,
σ -- Upper-band pullout force, in Newton per centimeter (N/cm)；
F -- Maximum pullout force, in Newton (N);
B -- Upper-band width of strip, in centimeters (cm).
6.10 Upper-band pullout force
Inspect according to method B in HG/T 2877-1997; take 1 pair of samples; respectively
take 1 sample from inner and outer sides of each shoe; take the arithmetic mean of two
test samples from each shoe as the result; the result of each shoe is respectively
indicated.
6.11 Flexing index of fiberboard
Inspect according to QB/T 1472; draw samples from warehouse that are of the same lot
number for inspection.
6.12 Rubbing f...
......
| Standard ID | QB/T 4546-2021 (QB/T4546-2021) | | Description (Translated English) | Children""s leather sandals | | Sector / Industry | Light Industry Industry Standard (Recommended) | | Classification of Chinese Standard | Y78 | | Classification of International Standard | 61.060 | | Word Count Estimation | 9,921 | | Date of Issue | 2021-12-02 | | Date of Implementation | 2022-04-01 | | Older Standard (superseded by this standard) | QB/T 4546-2013 | | Quoted Standard | GB/T 2703; GB/T 3903.1; GB/T 3903.2-2017; GB/T 3903.3-2011; GB/T 3903.4-2017; GB/T 3903.5; GB/T 4841.3; GB/T 20991-2007; GB/T 21396-2008; GB/T 28011; GB/T 38011; HG/T 3689-2014; QB/T 1187; QB/T 1472; QB/T 2673; QB/T 2882-2007; QB/T 4862 | | Summary | This standard specifies the requirements, determination rules, inspection rules and marking, packaging, transportation and storage of children's leather sandals, specifies the corresponding test methods, specifies the relevant terms and definitions, and specifies the product classification. This standard applies to the production, inspection and sales of leather sandals for infants and children and children's leather sandals for general use, which are made of natural leather, artificial leather, synthetic leather and textiles as the main materials for the upper straps (surfaces) through various processes. This standard does not apply to infant and children's sandals with special functions. For infants and children sandals with straps (surfaces) made of other materials, this standard may be implemented by reference. |
|