Some standard content:
National Standard of the People's Republic of China
Polyvinyl chioridecellularplastic slippers
Polyvinyl chioridecellularplastic slippersSubject Content and Scope of Application
GB/T 3807--94
Replaces GB 3807-83
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyvinyl chloride microcellular plastic slippers (hereinafter referred to as slippers).
This standard applies to slippers made of polyvinyl chloride resin, plasticizer, stabilizer and foaming agent as the main raw materials, through refining, molding and assembly.
Reference standards
GB 1040
GB2828
GB 2918
GB 4493
Plastic tensile test method
Count sampling procedure and sampling table for batch inspection (applicable to inspection of continuous batches)Standard environment for state adjustment and testing of plastic specimensTest method for hardness of microporous materials of rubber and plastic shoes
Determination of apparent density of foam plastics and rubberGB/T6343
3 Product classification
Slippers are divided into two categories according to the soles: flat heels and wedge heels. The specifications of slippers should meet the requirements of Table 1.
Sole length
≥165
≥191
≥203
≥216
≥229
≥241
≥254
≥267
≥>10
Approved by the State Administration of Technical Supervision on March 15, 1994 Flat heel thickness
Wedge heel thickness
Implemented on December 1, 1994
Technical requirements
Sole length
≥279
≥292
≥305
≥318
4.1 The specifications shall comply with the provisions of Table 1.
4.2 The appearance shall comply with the provisions of Table 2.
GB/T 3807—94
Continued Table 1
Thickness of flat heel sole
The length difference of the same pair of shoes shall not exceed 1.5mm, and the width difference shall not exceed 1.0 mm
The thickness difference of symmetrical parts of the same pair of shoes shall not exceed 1.5 mm. The thickness of the forefoot is no more than 1mm thicker than the heel
The difference in thickness between the left and right sides of a shoe is no more than 1.5mm, and the front and rear upturn is less than 10mm. Downward bending is not allowed
The shoelaces match the sole numbers. The deviation of the positioning holes in the matching parts of the same pair of shoes is no more than 5mm, and the edge of the large hole shall not be less than 5mm from the edge of the shoe
The pattern of the same pair of shoes is basically symmetrical and clear, and slight color difference is allowed. Each shoe is allowed to have 2 color spots with a diameter of 1~2mm. Each shoe is allowed to have 1 bubble with a diameter of 1~2mm. No missing material is allowed
The pattern is slightly unclear and slightly contaminated, but the area does not exceed one-fourth. Slight color difference is allowed. Slight missing material is allowed, but it does not obviously affect the appearance. Each shoe is allowed to have 2~3 There should be 2 bubbles of diameter mm, which should be more than 40mm apart, or 1 bubble of 3~5mm in diameter, but not at the point of application
Thickness of wedge heel sole
First-class and qualified products
The length difference of the same pair of shoes is not more than 2.5mm, and the width difference is not more than 1.5mm
The thickness difference of symmetrical parts of the same pair of shoes is not more than 2mm. The thickness of the forefoot is no more than 2mm thicker than the heel
The difference in thickness between the left and right sides of a shoe is no more than 2mm, the front and back are less than 15mm, the forefoot is not allowed to bend downward, and the heel is less than 5mm downward
The shoelaces match the sole numbers, the deviation of the positioning holes in the matching parts of the same pair of shoes is no more than 6mm, and the edge of the large hole shall not be less than 5mm from the edge of the shoe
The patterns of the same pair of shoes are basically symmetrical, and slight unclear patterns and slight color differences are allowed
Each shoe is allowed to have slight contamination, 3 color spots with a diameter of 1~3mm
Each shoe is allowed to have 3 bubbles with a diameter of 1~3mm. Slight material shortage is allowed, but the area should be less than 100 mm. Color jump is not larger than 4mm×50mm
Unclear pattern is allowed, obvious pollution is allowed, but the area does not exceed one-third, obvious color difference is allowed, slight lack of material is allowed, slight loose holes and material leakage area does not exceed 200 mm2
Each shoe is allowed to have 2 bubbles with a diameter of 3~5 mm, but not at the point of application
GB/T 3807—94
Continued Table 2
The cumulative thickness of the layer is allowed to be less than 2mm and the same pair of shoes is basically symmetrical. The colors of the same pair of shoes are basically the same, the color layers are symmetrical, and the interlayer break is less than one-tenth of the circumference
Each shoe is allowed to have 1~2 bubbles with a diameter 2 holes of 0.5mm and 0.6mm in diameter. The shape and pattern of the same pair of shoelaces should be symmetrical, with smooth surface and basically uniform color, without obvious distortion, deformation, scars and cracks.
Three color spots or impurities with a diameter of 0.5~1mm are allowed on each shoelace, and the spacing should be more than 30mm, and one bubble with a diameter of 1mm.
The raw edges of the shoelaces should be trimmed basically flat, but slight uneven trimming is allowed in the covered areas.
No concave-convex defects are allowed on the surface of the shoelaces, but slight concave-convex defects are allowed in the covered areas.
4.3 The physical and mechanical properties should comply with the requirements of Table 3. Table 3
5 Test methods
5.1 Specifications
Apparent density
Tensile strength
Elongation at break
Pull-out force of shoelaces and soles
Tear resistance of spikes
Tear resistance of cross angles
Qualified products
Coarse or full coarse layers are allowed, but the same pair of shoes is basically symmetrical. Color difference and different thickness of color layers are allowed. The interlayer break line is less than half of the circumference
Each shoe is allowed to have 2 holes with a diameter of 2 to 3 mm or 1 hole with a diameter of 3 to 4 mm The shape and pattern of the same pair of shoelaces are basically symmetrical, the color is basically consistent, there is no obvious distortion, no cracks
4 color spots or impurities with a diameter of 0.5~2mm are allowed on each shoelace, and 2 bubbles with a diameter of 1mm are allowed. The raw edges of the shoelaces are basically trimmed flat, but slight uneven trimming is allowed in the covered area
Slight concave and convex defects are allowed on the surface of the shoelaces
5.1.1 Length
The length of the slippers is measured with a measuring tool with an accuracy of 0.5mm. 0.22~0.40
≥120www.bzxz.net
≥120
5.1.2 Thickness
GB/T3807--94
The thickness of the slippers is measured with a measuring tool with an accuracy of 0.5mm. 5.2 Appearance
Visual inspection under natural light and measurement with corresponding measuring tools. 5.3 Physical and mechanical properties
5.3.1 The sample should be taken from the product after 5 days of storage. For the sole sample, the upper and lower cortical layers of the sole are cut off and the middle layer is taken. The sample thickness is 2.0~2.5mm. The sample surface should be flat and free of defects such as mechanical processing scratches. For wedge-heeled slippers, the forefoot sample should be taken. 5.3.2 The sample state adjustment and test environment should be carried out in accordance with GB2918. Temperature: 23±2℃.
Humidity: Normal humidity.
The state adjustment time is more than 4h.
5.3.3 Apparent density
It should be carried out in accordance with GB6343. The sample is a disc with a diameter of 36mm. The test result should be taken to two significant figures. 5.3.4 Hardness
It should be carried out in accordance with GB4493.
5.3.4.1 The test specimen is a disc with a diameter of 36mm, which is stacked by 3 pieces and has a thickness of not less than 6mm. The stacking sequence is changed and the test is performed 3 times. The reading is taken when the pressure needle is in close contact with the test specimen for 15 seconds.
5.3.4.2 The test result of hardness (HIc) is expressed as the arithmetic mean of each group of test specimens, with two significant figures. 5.3.5 Tensile strength and elongation at break
Perform according to GB1040. The test specimen is shown in Figure 1. Test speed (no load): 250 25mm/min. The thickness is measured at the blue point within the effective range of the test specimen, and the minimum value is taken.
5.3.6 Pull-out force between shoelaces and soles
25 ± 0. 5
5.3.6.1 Test specimen: The test specimen is cut at the connection between the shoe spikes and the sole of the slippers (including the shoe spikes). First, cut the shoelaces 50mm from the spike head, and then cut them on the sole, the size is about 85mm×75mm. Each group of samples should be no less than 2 pairs, and each connection should be tested separately. 5.3.6.2 Test conditions: Test speed (no load): 100±10mm/min. 5.3.6.3 Test equipment: Test machine that meets the requirements of GB1040. The test fixture is shown in Figure 2. The material is 45# steel. Its movable plate is shown in Figure 3. If the shoe has 5, 6, or 8 nails, the movable plate structure is shown in Figure 4 and Figure 5. 504
GB/T 3807--94
GB/T 3807-94
5.3.6.4 Test method: Place the sample in the center of the circular hole of the movable plate, clamp the shoelaces into the fixture, and make the clamping part 20mm. Then start the test machine for testing. When the spikes are pulled out from the sole, the reading shown by the test machine is the pull-out force. 5.3.6.5 The test results are expressed as the arithmetic mean of the front and rear straps of each group, accurate to 1N. 5.3.7 Breaking force of spikes
5.3.7.1 The sample is cut from the shoelace and cut off at 50mm from the spike head. Each group of samples shall have no less than 2 pairs, and each spike shall be tested separately.
5.3.7.2 Test conditions: Test speed (no load) is 100±10mm/min. 5.3.7.3 See Figure 6 for the test fixture.
5.3.7.4 Test method: Place the spike of the sample in the movable hole slot of the upper fixture, and clamp the shoelace into the lower fixture so that the clamped part is 20mm, 506
GB/T 3807-94
Then start the test machine for testing. When the spike breaks, the reading shown by the test machine is the breaking force of the spike. If the break is at the neck of the shoelace, it is still valid.
5.3.7.5 The test results are expressed as the arithmetic mean of the front and rear nails of each group, accurate to 1N. 5.3.8 Tear resistance of cross angle of shoelaces
5.3.8.1 The specimens are cut from the shoelaces (if they are cross-shaped shoelaces, the obtuse angle position of the rear part of the shoelaces is taken), and cut at 40mm from the intersection. Each group of specimens shall have no less than 2 pairs, and each cross angle shall be tested. 5.3.8.2 Test conditions: The test speed (no load) is 100±10mm/min. 5.3.8.3 Test method: Gently straighten the two ends of the cross angle of the specimen, and clamp them into the upper and lower clamps respectively, so that the clamped part is 20mm. Then start the test machine for testing. When the cross angle of the shoelaces is torn, the reading shown by the test machine is the tear resistance of the cross angle of the shoelaces. 5.3.8.4 The test results are expressed as the arithmetic mean of each group of specimens, accurate to 1N. 6 Inspection rules
6.1 Batching and sampling
6.1.1 Batching
Products of the same type with the same formula and the same process are considered as a batch. Each batch shall not exceed 300,000 pairs. 6.1.2 Sampling
Specifications and appearance shall be carried out in accordance with the normal sampling plan specified in GB2828, where the general inspection level (IL) is I and the acceptable quality level (AQL) is 6.5, see Table 4. Physical and mechanical properties Randomly select 10 pairs of slippers from each batch for testing. Table 4
Batch range
26~150
151~280
281~500
501～1200
1 201～3 200
3 201～10 000
10 001~35000
≥35001
6.2 Factory inspection
All items specified in Chapter 4 shall be carried out.
6.3 Judgment rules
6.3.1 Judgment of sample unit quality
Sample size
Number of qualified judgment
Number of unqualified judgment
The sample unit of products is double. If any one of the specification and appearance inspection results is unqualified, the sample unit shall be judged as unqualified. 6.3.2 Determination of the quality of qualified batches
The determination of specifications and appearance shall be carried out in accordance with the provisions of Table 4. Double
Physical and mechanical properties test results, if there are unqualified items, double samples should be taken from the original batch for re-inspection of the unqualified items. If all the re-inspection results are qualified, the whole batch is qualified. If there are still unqualified items in the re-inspection results, the whole batch is unqualified. 6.3.3 Determination of product quality grade
Determined according to the lowest grade of the test results of all items. 507
Marking, packaging, transportation, storage
7.1 Marking
GB/T3807-94
The product should have a certificate of conformity, and the packaging should have the following marks: product name, manufacturer name and address, trademark, specification model, quality grade, standard promotion number, production date or batch number, inspector's seal. 7.2 Packaging
Slippers should be packed in clean plastic film bags or kraft paper bags, one pair per bag, and use strong cartons as outer packaging. 7.3 Transportation
When transporting slippers, they should be protected from heavy objects and mechanical damage, and should be protected from sunlight and rain. 7.4 Storage
After the slippers are packed in boxes, they should be stored in a dry, clean, ventilated warehouse, 3m away from heat sources. The products should be placed neatly to prevent squeezing, deformation or injury. The storage period shall not exceed one year from the date of production. Additional remarks:
This standard was proposed by the Ministry of Light Industry.
This standard was jointly sponsored by the National Technical Committee for Standardization of Plastic Products. This standard was drafted by the Overseas Chinese Plastic Factory of Fuzhou, Fujian Province and the Second Light Industry Research Institute of Fujian Province. The main drafters of this standard are Lin Xinmei, Rao Zhongrong, Chen Yijun, Pan Yue, Liang Miaozhen and Yonghua. 5083 Determination of product quality grade
Determine according to the lowest grade of all test results. 507
Marking, packaging, transportation, storage
7.1 Marking
GB/T3807-94
The product should have a certificate of conformity, and the packaging should have the following marks: product name, manufacturer name and address, trademark, specification model, quality grade, standard promotion number, production date or batch number, inspector's seal. 7.2 Packaging
Slippers should be packed in clean plastic film bags or kraft paper bags, one pair per bag, and use strong cartons as outer packaging. 7.3 Transportation
When transporting slippers, prevent pressure and mechanical damage, and avoid sun and rain. 7.4 Storage
After the slippers are packed in boxes, they should be stored in a dry, clean, ventilated warehouse, 3m away from heat sources. Products should be placed neatly to prevent squeezing, deformation or injury. The storage period shall not exceed one year from the date of production. Additional remarks:
This standard was proposed by the Ministry of Light Industry.
This standard was drafted by the National Technical Committee for Standardization of Plastic Products. This standard was drafted by the Overseas Chinese Plastic Factory in Fuzhou, Fujian Province and the Second Light Industry Research Institute of Fujian Province. The main drafters of this standard are Lin Xinmei, Rao Zhongrong, Chen Yijun, Pan Yue, Liang Miaozhen and Yonghua. 5083 Determination of product quality grade
Determine according to the lowest grade of all test results. 507
Marking, packaging, transportation, storage
7.1 Marking
GB/T3807-94
The product should have a certificate of conformity, and the packaging should have the following marks: product name, manufacturer name and address, trademark, specification model, quality grade, standard promotion number, production date or batch number, inspector's seal. 7.2 Packaging
Slippers should be packed in clean plastic film bags or kraft paper bags, one pair per bag, and use strong cartons as outer packaging. 7.3 Transportation
When transporting slippers, prevent pressure and mechanical damage, and avoid sun and rain. 7.4 Storage
After the slippers are packed in boxes, they should be stored in a dry, clean, ventilated warehouse, 3m away from heat sources. Products should be placed neatly to prevent squeezing, deformation or injury. The storage period shall not exceed one year from the date of production. Additional remarks:
This standard was proposed by the Ministry of Light Industry.
This standard was drafted by the National Technical Committee for Standardization of Plastic Products. This standard was drafted by the Overseas Chinese Plastic Factory in Fuzhou, Fujian Province and the Second Light Industry Research Institute of Fujian Province. The main drafters of this standard are Lin Xinmei, Rao Zhongrong, Chen Yijun, Pan Yue, Liang Miaozhen and Yonghua. 508
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