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HG/T 3084-2010

Chinese Standard: 'HG/T 3084-2010'
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Detail Information of HG/T 3084-2010; HG/T3084-2010
Description (Translated English): Injection molding shoes
Sector / Industry: Chemical Industry Industry Standard (Recommended)
Classification of Chinese Standard: Y78
Classification of International Standard: 61.060
Word Count Estimation: 8,858
Date of Issue: 2010-11-22
Date of Implementation: 2011-03-01
Older Standard (superseded by this standard): HG/T 3084-1999
Quoted Standard: GB/T 3293.1-1998; GB/T 3293-2007; GB/T 3903.1-2008; GB/T 3903.5-1995; HG/T 2198-1991; HG/T 2403-2007; HG/T 2411-2006; HG/T 3689-2001
Drafting Organization: Fujian Province Product Quality Supervision and Inspection Center of footwear
Administrative Organization: National Rubber and rubber products Standardization Technical Committee Technical Committee shoes
Regulation (derived from): Engineering (2010) No. 126
Summary: This standard specifies the classification injection shoes, requirements, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to thermoplastic elastomer SBS, PVC, modified PVC as substrate, synthetic materials or natural materials to help with the production of injection molding process is generally used shoes.

HG/T 3084-2010
HG
ICS 61.060
Y78
Record No.. 30135-2011
INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing HG/T 3084-1999
Injection Molding Shoes
注塑鞋
ISSUED ON. NOVEMBER 22, 2010
IMPLEMENTED ON. MARCH 1, 2011
Issued by. Ministry of Industry and Information Technology of the People's Republic
of China.
Table of Contents
1 Scope ... 4 
2 Normative References ... 4 
3 Classification ... 4 
4 Requirements ... 5 
5 Test Methods ... 6 
6 Inspection Rules ... 7 
7 Marking, Packing, Transportation and Storage ... 7 
Foreword
This standard replaces "Injection Molding Shoes" (HG/T 3084-1991).
The main technical changes in this standard over "Injection Molding Shoes" (HG/T
3084-1991) are as follows.
- Net items were added in product classification;
- The item “flexing resistance” of finished shoes was added;
- The item “discoloration resistance” was added;
- Items of tensile strength, elongation at break and hardness inspection were deleted;
- Parts of requirements on appearance quality were modified;
- The provision "Defects that may affect wearing shall not exist" was added in
appearance quality requirements;
- The name of “cold resistance” was changed into “cut increasing resistance”;
- Methods for cold resistance test were adjusted.
This standard was proposed by China Petroleum and Chemical Industry Association.
This standard shall be under the jurisdiction of the Subcommittee on Rubber Shoes the
National Technical Committee on Rubber & Products of Standardization Administration of
China (SAC/TC 35/SC9).
Drafting organizations of this standard. Fujian Footwear Products Quality Supervision and
Inspection Center, and Fujian Jinjiang Yuantong Shoe Co., Ltd.
Chief drafting staffs of this standard. You Yongyi, Xu Chunshu, Cai Hongshan, Li Jianjia, and
Li Huawei.
Previous editions of the standard replaced by this standard are.
- HG/T 3084-1989;
- HG/T 3084-1999.
Injection Molding Shoes
1 Scope
This standard specifies the classification, requirements, test methods, inspection rules and
marking, packing, transportation and storage of injection molding shoes.
This standard is applicable to common shoes made by injection molding process with
thermoplastic elastomer SBS, PVC and modified PVC as sole materials, and synthetic or
natural materials as upper materials.
2 Normative References
The provisions contains in the following normative documents which, through reference in
this text, shall constitute provisions of this standard. For dated references, subsequent
amendments to (excluding correction to), or revisions of, any of these publications do not
apply. However, the parties coming to an agreement according to this standard are encouraged
to research whether the latest editions of these labels are applied or not. For undated
references, the latest editions of the normative documents apply.
GB/T 3293.1-1998 Shoes Size
GB/T 3293-2007 Chinese Last Systems
GB/T 3903.1-2008 Footwear - General Test Methods - Flexing Resistance
GB/T 3903.5-1995 General Test Method for Footwear-Test Method of Appearance
HG/T 2198-1991 Rubber Vulcanized-The general Requirements for the Physical Test
Method
HG/T 2403-2007 Test Rule, Marking, Packing, Transport, Storage for Rubber Shoes
HG/T 2411-2006 Test Method for 90° Flexing of Sole Material
HG/T 3689-2001 Test Method of Discoloration for Footwear
3 Classification
Injection molding shoes are classified according to outsole materials.
a) Injection molding shoes with thermoplastic elastomer SBS soles;
b) Injection molding shoes with PVC soles;
c) Injection molding shoes with dense-type modified PVC soles;
d) Injection molding shoes with foamed modified PVC soles.
4 Requirements
4.1 Shoe size, model and last size
Shoe size and model shall meet the requirements of GB/T 3293.1-1998. Last size shall meet
the requirements of GB/T 3293-2007.
4.2 Physical properties
The physical properties shall be in accordance with those specified in Table 1.
Table 1 Physical Properties
Item Technical requirement
Cut-growth resistance/mm ≤6
Heating loss a/% ≤5
Discoloration resistance/ Grade ≥3~4
Flexing resistance of finished shoes b (pre-cut is 5cm, with continuous flexing of 40,000
times)
Split length ≤15 mm,
New cracks ≤5mm,
Upper sole (foxing) chip ≤10mm,
Shall be free from broken surface
a Heating loss is not conducted towards SBS sole and foamed-type modified PVC sole.
b Flexing resistance of finished shoes with size below 230 shall not be tested.
4.3 Appearance quality
Appearance quality shall meet the requirements of Table 2.
Table 2 Appearance Quality
No. Name of defect Technical requirement
1 Color difference Relative parts of one pair of shoes shall be without obvious color different within visual range of 1m
2 Height difference of relative parts of back uppers Not greater than 4mm
3 Stain Accumulative total area shall not exceed 50mm
2 and single stain shall not
exceed 25mm2
4 Upper sewing defect
Skipping stitch. for one stitch, less than four places
Double stitch. for three stitches, less than four places
Broken thread. disallowed, thread end shall not be exposed on upper
Prepare 2 test blocks with the length of (40±3)mm, width of (10.0±0.2)mm and thickness of
(2.0±0.3)mm according to the methods in HG/T 2198-1991. Place them in a dryer with
calcium chloride or silica gel. Measure its mass 24h later. Then place the 2 test blocks in an
air thermotank at (100±2)°C and keep them for 6h. Transfer them into a dryer and keep for 1h.
Then measure the mass.
The heating loss H (%), expressed by mass fraction, shall be calculated according to Formula
(1). And the test result shall take the average value.
H (%) =
AS
WW  ×100 (1)
Where,
WS - the mass of test block before heating, g;
......
Related standard:   HG/T 3085-2011  HG/T 3086-2011
   
 
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