This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyvinyl chloride plastic sandals and slippers. This standard applies to polyvinyl chloride resin as the main raw material, with plasticizers and other additives added, and made of polyvinyl chloride sandals and slippers (hereinafter referred to as sandals and slippers) by injection molding or extrusion molding. QB/T 1653-1992 Polyvinyl chloride plastic sandals and slippers QB/T1653-1992 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Polyvinyl fluoride plastic sandals and slippers
Subject content and scope of application
QB/T 1653-92
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyvinyl chloride plastic sandals and slippers.
This standard applies to polyvinyl chloride sandals and slippers (hereinafter referred to as sandals and slippers) made of polyvinyl chloride resin as the main raw material, with plasticizers and other additives added, and made by injection molding or extrusion molding. 2 Reference standards
GB 1040
GB2411
GB 2828
GB 2918
GB3293
3 Product classification
Plastic tensile test method
Plastic Shore hardness test method
Batch inspection counting sampling procedure and sampling table (applicable to continuous batch inspection) Plastic specimen state adjustment and test standard environment Chinese shoe size and shoe planting series
3.1 According to the use of the product, it is divided into sandals and slippers. 3.2 The specifications of sandals and slippers are divided according to the provisions of GB3293. The inner length is calculated according to formula (1). Inner length (mm) Chinese shoe size × 10 + allowance - tolerance formula: allowance - tolerance
4 Technical requirements
4.1 Dimensions and deviations
4.1.1 Inner length
Full upper is 10 mm, full (half) empty is 5 mm; slippers are 10 mm. The inner length limit deviation of sandals and slippers is ±2 mm. 4.1.2 Thickness
4.1.2.1 The thickness of the upper, sole and the joint of the upper and sole of sandals and slippers shall meet the requirements of Table 1. Table 1
No. 11~14
No. 1517
No. 18~21
22~242
25～30
Thickness of shoe sole
Approved by the Ministry of Light Industry of the People's Republic of China on January 15, 1993526
Thickness of forefoot sole
· (1)
Thickness of upper and sole joint
Implemented on September 1, 1993
4.1.2.2 The thickness of the heel should be greater than the thickness of the forefoot sole. QB/T1653-92
4.1.2.3 The thickness of the sole plate shall not be less than half of the thickness of the forefoot sole specified in the standard4.1.2.4 The thickness of the shoelace tail below the lowest buttonhole is allowed to gradually decrease. 4.1.3 The deviation of the external dimensions of the symmetrical parts of the same pair of shoes shall meet the requirements of Table 2. Table 2
4.2 Appearance
4.2.1 The same pair of shoes shall be basically symmetrical in appearance, with no obvious difference in color, neatly trimmed, and without any deviation
4.2.2 The upper surface shall not have cracks, cold spots, heat spots, or depressions greater than 0.2mm at the mold line. Color impurities with a diameter of 1.0~1.5mm shall not exceed 3 on the front upper and back upper, and color impurities with a diameter of less than 1mm shall not be clustered. Bubbles with a long diameter of 0.5~~1.0mm shall not exceed 5 on the front upper and back upper. Bubbles are not allowed at the shoelace eyelets. 4.2.3 There shall be no edges or corners at the joint of the upper and sole. 4.2.4 There shall be no bumps greater than 1.5mm and bubbles with a long diameter greater than 5.0mm on the sole contact surface, foot contact surface, and sides, and no more than 5 bubbles with a length of 2.0~5.0mm.
4.2.5 No burns or scalds with a width greater than 3mm are allowed around the buckle. No warping is allowed on the scalding edge. 4.3 The physical and mechanical properties should meet the requirements of Table 3. Table 3
Hardness, (Shore A)
Tensile strength, MPa
Elongation at break, %
Heating loss rate, %
5 Test method
5.1 Sample preparation
First-class products
≥320
Qualified products
≥300
Specimens for physical and mechanical properties test At least 5 pairs are randomly selected from the samples, and test pieces are cut from the soles. The thickness is 1.5-2.0mm, and the surface should be flat without defects such as mechanical processing damage. 5.2 Conditioning
Conditioning the condition under normal deviation of standard environment specified in GB2918 for more than 4 hours, and conducting the test in this environment. 5.3 Dimensions and Deviations
5.3.1 Inner Length
5.3.1.1 The inner length of full-top shoes is based on the bottom line. After laying the sole with the upper height of 1mm flat, use a steel tape measure or a special ruler for four shoes to align the two intersections of the mold line and the inner edges of the front and rear upper and sole joints, and measure the sole tightly. 5.3.1.2 The inner length of full-top shoes is based on the bottom line. After laying the shoes flat, use a steel tape measure or a special ruler for four shoes to align the two intersections of the mold line and the front and rear outer edges of the bottom line, and measure the sole tightly.
5.3.1.3 The inner length of half-top shoes is measured according to the method in 5.3.1.1 for the covered end and the method in 5.3.1.2 for the empty end. 5.3.2 Thickness
5.3.2.1 Upper thickness
QB/T 1653-92
Use a vernier caliper to measure the thickness at the thinnest point 2mm from the edge of the upper. If there is a pattern or groove, measure the thickness at the edge of the pattern or groove. If the belt width is less than 4mm, directly measure the thickness of the middle of the belt, accurate to 0.1mm. 5.3.2.2 Upper and sole connection thickness
Based on the bottom line, keep the upper height of 1mm at the upper and sole connection, cut off the upper surface, and measure at the thinnest point with a vernier caliper, accurate to 0.1 mm.
5.3.2.3 Sole thickness
a. Forefoot thickness Cut the forefoot of the sole and use a vernier caliper to measure the thickness within the pattern on the edge of the forefoot, taking the minimum value, accurate to 0.1 mm;
Cut the sole along the dividing line and use a vernier caliper to measure the thickness at the center, accurate to 0.1 mm; b. Heel thickness
c. Plate thickness
5.4 Appearance
Cut the forefoot of the sole and use a vernier caliper to measure the thickness of the forefoot plate, accurate to 0.1 mm. Visually inspect under natural light and measure with corresponding measuring tools. Use a ruler to cross the edge of the depression at 2 mm each, and use the line connecting the two contact points as the reference line. Use a depth gauge perpendicular to the reference line to align with the center of the depression for measurement, accurate to 0.1 mm.
5.5 Physical and mechanical properties
5.5.1 Hardness
According to the provisions of GB2411, use type A.
5.5.2 Tensile strength and elongation at break
Perform according to GB1040. Test speed is (250±50)mm/min. Sample shape and size are shown in Figure 1. 5.5.3 Heating loss rate
5.5.3.1 Apparatus
Non-air electric heating constant temperature box.
5.5.3.2 Sample
Length (60±0.2)mm, width (40±0.2)mm, thickness 1.5~2.0mm. W
Figure 1 Schematic diagram of tensile test specimen
L-total length, 110mm; H-distance between fixtures, 76mm; C-parallel part length, (26±0.5)mmG-gauge length (or effective part); R-14mm; Rz25mm, d-thickness, 1.5~2.0mm, b-parallel part width, (6.5±0.1)mm; W-end width, 25mm5.5.3.3 Test method
Put the specimen in a calcium chloride or silica gel desiccator and measure its mass at room temperature for at least 4h. Then put the specimen in a constant temperature box at (100±2)℃ at 2/3 of the height. The distance between the center of the specimen and the mercury ball of the thermometer is not more than 100mm. The center of the specimen and the mercury ball of the thermometer are kept in the same plane. The distance between the specimens is not less than 50mm. No more than 6 specimens are placed at a time. Start timing when the temperature rises to the specified temperature. Take it out after 6 hours and put it in the dryer for 1 hour. Then measure its mass, accurate to 0.001g. 5.5.3.4 Result expression
Calculate the heating loss rate according to formula (2).
Where: P——heating loss rate,%;
Wo mass of the sample before heating, g;
—mass of the sample after heating, g.
QB/T 1653-92
W. -Wi
× 100
Take 3 pieces of each group of samples and take their arithmetic mean, accurate to 0.1%. 6 Inspection rules
6.1 Batch
The same type of products produced continuously under the same formula and process conditions are a batch, and each batch shall not exceed 50,000 pairs. 6.2 Factory inspection
Each batch of products shall be subject to factory inspection, and the inspection items shall be all the contents of the technical requirements. 6.3 Sampling
6.3.1 If there are different specifications in the same batch, the number of specifications to be sampled shall be determined according to the provisions of Table 4. Table 4
Range of the number of specifications in the same batch
Number of specifications to be sampled
(2)
6.3.2 Inner length and appearance According to the quantity determined in Table 4, each specification shall be sampled in accordance with the provisions of GB2828. The secondary normal sampling plan is adopted, and the general inspection level is I, see Table 5.
Batch range
281500
501～1200
1201~3200
3201～10 000
10 00135 000
35 001~150 000
Sample size
Cumulative sample size
Number of qualified judgments
Number of unqualified judgmentswwW.bzxz.Net
6.3.3 Physical and mechanical properties test specimens At least 5 pairs shall be randomly selected from each batch, and one pair of thickness and external dimensions shall be selected from each specification for inspection.
6.4 Judgment rules
6.4.1 Judgment of sample units
The inner length and appearance shall be inspected according to the requirements of 4.1.1 and 4.2. If all items are qualified, the sample unit is qualified. 6.4.2 Judgment of qualified batches
The inner length and appearance shall be inspected according to the provisions of GB2828. The qualified quality level AQI is 6.5, see Table 5. If there are unqualified items in the inspection results of thickness, external dimensions and physical and mechanical properties, double samples shall be drawn from the original batch to conduct 529
re-inspection of the unqualified items. If all the re-inspection results are qualified, it is judged to be qualified. 6.4.3 Judgment of product quality level
Judgment shall be made according to the lowest level of all inspection results. 7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 Product marking
Each pair of shoes shall have the following markings:
a. Manufacturer name and trademark;
b. Shoe size and shoe type.
7.1.2 Inner packaging marking
QB/T 1653—92
Each pair of shoes shall have the following markings on the inner packaging and be accompanied by a certificate of conformity:
a. Manufacturer name and address;
b. Product name and trademark;
c. Quality grade, shoe size and color;
d. Standard code and number.
7.1.3 Outer packaging marking
The outer packaging box shall have the following markings:
a. Product name and article number;
b. Manufacturer name, address and trademark;
c. Quality grade, shoe size, color, quantity; d. Volume, production date or batch number.
7.2 Packaging
7.2.1 Each pair of shoes should be packed in paper bags, paper boxes or plastic bags. 7.2.2 The outer packaging should be corrugated paper boxes, which should be firmly sealed and tightly tied. 7.3 Transportation
Prevent heavy pressure and damage during transportation, and avoid exposure to sunlight and rain. 7.4 Storage
The product should be stored in a ventilated and dry warehouse, 3m away from heat sources. The product has a storage period of two years from the date of production. Additional remarks:
This standard was proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Plastic Products Standardization Center. This standard was drafted by Shanghai Plastic Products Factory No. 5. The main drafters of this standard are Zhu Meiling and Li Huiqi. From the date of implementation of this standard, the original national standard GB3806--83 "Polyvinyl chloride plastic sandals" will be abolished.
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