Some standard content:
Chemical Industry Standard of the People's Republic of China
1 Subject content and scope of application
HG 2018-91
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging and storage and transportation requirements for lightweight rubber shoes. This standard is applicable to lightweight rubber shoes produced by the adhesive hot vulcanization process for daily wear. 2 Reference standards
GB 631
GB 1689
General requirements for physical test methods for vulcanized rubberDetermination of tensile properties of vulcanized rubber
Test method for Shore A hardness of rubber
Determination of wear resistance of vulcanized rubber (using Acker abrasion machine)GB/T2941Standard temperature, humidity and time for environmental conditioning and testing of rubber specimensGB3293China shoe size and shoe size series
3 Technical requirements
3.1 Shoe size and model
Shoe size, model, shoe size and shoe size classification shall be implemented in accordance with the provisions of GB3293. For export products, the shoe size and model may be implemented in accordance with the contract agreement. 3.2 Physical and mechanical properties shall comply with the provisions of Table 1, and the test parts shall comply with the provisions of Table 1.3.3 Appearance quality
3.3.1 Appearance quality shall comply with the provisions of Table 2. Class
Tensile strength, MEPa
Elongation at break, %
Wear spot, cm*
Hardness (Shore), degree
Ministry of Chemical Industry of the People's Republic of China, 1991-06-27, approved
1991-12-01, implemented
Random yarn, skipped
Knots, skipped needles, broken threads
Lining upper and lower sizing is too high
Uneven, bubbles
Sand, dense, air filter
Unsuitable pressing rate
HG 2018 -- 91
First-class products
No slipping in the front of the shoes, other parts of the messy yarn area is less than 80mm or the length of the skipped yarn is less than 10mm
No slipping
Basically flat, not affecting the appearance
Slant does not exceed mm
No
No more than 5 mm
Qualified products
Slipping area is less than 80 mm* or the length of the yarn is less than 10 mm, limited to two places
Skew does not exceed 8 mm
Only the mouth strip is damaged by less than 3mm, and after repair, it is limited to one place, and other things are not allowed
No more than 8 mm above the inner cancer
No one
The forbidden area does not exceed 300, The total surface area shall not exceed 40 mm, the width of the edge voids shall not exceed 6 mm, the total area shall not exceed 400 mm, or the depth shall not exceed 1.5 mm, the area shall not exceed 200 mm, or the depth shall not exceed 2 mm. The curved part shall not be allowed (the needle eye is not limited hereto). The vertical length of other parts shall not exceed 1 mm, the height or depth shall not exceed 0.5 mm, the depth shall not exceed 1 mm, and the curved part shall not exceed 1 mm. The curved part shall not be allowed. The length of the upper joint shall not exceed 2 mm, the area shall not exceed 10 mm, the total area shall not exceed 700 mm, and the eye penetration of the upper shall not exceed this limit. The total area shall not exceed 600 mm, the width of the edge voids shall not exceed 8 mm, the total area shall not exceed 0.00 mm, or the depth shall not exceed 2 mm, the area shall not exceed 400 mm. mm*, height or depth not exceeding 2 mm, limited to three places
No bending is allowed (pinhole is not included) Other parts of the diameter not exceeding 2 mm High or deep not exceeding 0.6 mm, limited to two places
No probe not exceeding 2 mm, length not exceeding 10 blood m, limited to two places, no bending, the length of the upper seam not exceeding 4 mtr
Area not exceeding 20nam
A pair of shoes
Corresponding
Adhesion marks
Sand grains, spots, bubblesbZxz.net
Pattern clarity
Baotou Tianxiao
Shoe length
Heel length
Back upper height
Decorative logo
HG 2018—91
Continued Table 2
First-class products
The pattern is basically smooth and clear, without affecting the appearance
No difference is allowed at the bend of the toe cap and the letter, and the length of the edge of other parts shall not exceed 5 mm. Only one place is allowed
No difference
The height shall not exceed 5mB, basically neat
The front palm solid curve shall not be straight and light shall not exceed
2 mm, and the height or depth shall not exceed 1.5 mm. Only two places shall not have
The area shall not exceed 300mm, basically flat and limited to two places
Basically clear
There is a difference at a viewing distance of one meter, which does not affect the appearance
The difference is not more than 4mm
The difference is not more than B mum
The difference is not more than 7 mm
The difference of low-top shoes is not more than 3mm, and the difference of high-top shoes is not more than 5 mm
The surface of the shoes is slightly damaged, which does not affect the appearance
The surface of the shoes is slightly damaged, which does not affect the appearance
The pattern is basically clear, and does not obviously affect the appearance
There is no such thing at the bend of the head and the strip, and the length of other parts does not exceed 10 mm, and the length does not exceed 5 mm
It exceeds the requirements of first-class products, and the basic maintenance
There is no such thing at the front bend: the diameter does not exceed 4
mm, and the height or depth does not exceed 2mm, and the length is limited to two places
There is no such thing at the front bend, and the length of other parts does not exceed 10mm, and the depth does not exceed 2m
The cumulative area does not exceed 100 mm, and it has a slight impact on the appearance
The difference is obvious at a one-meter viewing distance, and it does not seriously affect the appearance
The difference is not more than 8 mm
The difference is not greater than 10
The difference is not greater than 14 mm
The difference between low-top shoes is not more than 5mml and the difference between high-top shoes is not more than 7 nm
The cumulative area is within 500 mn*: light-colored products are within 200 mn*. They are not significantly affected by the appearance and can be identified. They slightly affect the appearance.
No
Note: The appearance quality defects listed above should be handled according to the similar items listed above; those that seriously affect the appearance or wear are not listed as qualified products. 4 Physical and mechanical properties test methods
The test pieces shall be carried out in accordance with GB527.GB/T2941. The sample shall be placed for no less than 8 hours before the test. The finished product shall be cut along the outer sole 4.1
direction.
HG 2018- 91
4.2 The tensile strength and elongation at break tests shall be carried out in accordance with GB528. The sample shape is specified as a dumbbell-shaped cutter of type 1. 4.3 The wear test shall be carried out in accordance with the provisions of GE1689. When the test piece is not long enough, the outer sole direction shall be overlapped. When the outer sole is thin, the wear test piece can be 2~3 mm.
4.4 The impact test shall be carried out in accordance with the provisions of GB531. 5 Inspection rules
5.1 The appearance quality inspection is mainly based on visual inspection. The arbitration of the plate can be supplemented by instrument measurement. The inspection shall be carried out one by one. For the problems between the plate and the plate that cannot be shown by a single shoe, a pair of inspection shall be carried out.
5.2 The physical and mechanical properties inspection shall be carried out in batches of 20,000 pairs (if less than 20,000 pairs, the delivery quantity shall be a batch). One pair shall be randomly selected from each batch for inspection. Those that meet the requirements of this standard shall be qualified. If there are items that do not meet the requirements in the first inspection, double sampling shall be carried out and the items that do not meet the requirements shall be re-inspected. If one pair still fails to meet the requirements after the re-inspection, the batch of products shall be judged as unqualified products. B. Marking, packaging, transportation and storage
6. 1 Each pair of shoes should have the following markings: 1
Factory name,
Shoe size and model:
Trademark or brand name:
Product grade
6.2 Inner packaging markings:
Manufacturer name,
Product name,
Mark,
Trademark or brand name:
Product grade;
Precautions for wearing.
6.3 Requirements and markings for outer packaging
Requirements for outer packaging
Outer packaging should be made of cardboard boxes, the seal should be firm and the box should be tied tightly. B.3.2 Outer packaging mark:
Factory name
Product name,
Product specifications, quantity
Trademark Trademark name:
Product grade,
Year and month of production,
Article number or batch number!
Total quantity,
Size and volume.
6.4 Transportation requirements
During transportation, there must be a cover on top. It is strictly forbidden to stack with oil, acid, alkali and other corrosive chemicals. 6.5 Storage requirements
The shoe box should be stored 0.2 m above the ground, 0.5 m from the wall, and 1 m away from the heat source. The room should be dry and ventilated to avoid direct sunlight.
HG 2018-91
It is strictly forbidden to stack with oil, acid, alkali and other corrosive chemicals. b.
c. Under the above storage conditions and in the original packaging, within one year from the date of production, the manufacturer shall ensure that the product complies with this standard. Additional instructions are required.
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Shanghai Rubber Shoes Research Institute. This standard was drafted by Qing Rubber Jiuguang Co., Ltd. The main drafters of this standard are Yang Zheliang and Xu Hu. 5
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