Some standard content:
Light Industry Standard of the People's Republic of China
Plastic pencil cases
Subject content and scope of application
QB/T 1587—1992
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of plastic pencil cases. This standard applies to PVC semi-rigid pencil cases and injection-molded pencil cases. 2 Reference standards
GB/T2828 Batch inspection counting sampling procedures and sampling tables (applicable to inspection of continuous batches) GB/T2829 Period inspection counting sampling procedures and sampling tables (applicable to inspection of stability during production) 3 Terminology
3.1 Semi-rigid pencil case: a pencil case with a basin made of PVC semi-rigid sheet. 3.2 Injection-molded pencil case: a pencil case with a box body formed by injection molding. 3.3 Heat sealing: Use high frequency, low frequency and ultrasonic heat sealing processes to achieve box surface molding, lining molding, and connection between the box surface and the semi-rigid box body. 3. 4 Magnetism, magnetic strength of magnetic steel.
3.5 Folding resistance: The ability of the basin surface to withstand folding at the fold line. 3. 6 Pressure resistance, the ability of the pencil case to withstand static pressure when it is placed flat. 3. 7 Temperature resistance: The ability of the pencil case to withstand high overflow and low temperature. 3.8 Bonding: The bonding strength between the box surface and the injection molded box body. 4 Product classification
Plastic pencil cases are divided into semi-rigid pencil cases and injection molded pencil cases according to the molding process, and their specifications are specified by the manufacturer's enterprise standards. 5 Technical requirements
5. 1 Plastic pencil cases are divided into first-class products and qualified products according to different technical indicators. 5.2 Technical requirements should comply with the provisions of Table 1.
(1) The pattern is clear, the color is bright and uniform, and the color registration is accurate
(2) The position of the pattern on the box is accurate
(1) The box surface is flat and full
(2) No bubbles, no stains, no damage, no wrinkles. The Ministry of Light Industry of the People's Republic of China approved the classification of industry information on August 31, 1992. Free download
(1) The pattern is clear, the color is bright and uniform, the color registration is accurate, and slight color difference is allowed
(2) The position of the pattern on the surface is basically accurate
(1) The box surface is basically flat and full
(2) There is basically no warping, no damage, and no stains or impurities on the main parts
1993-04-01Implementation
PVC Semi-rigid
Chip box
Injection molding box
Comprehensive mechanical properties
6Test methods
QB/T 1587--1992
Continued Table 1
(3) Product dimensions meet design requirements
(4) Knife line depth is even, smooth around, no burr, no deformation, no breakage, no cracks
(1) Heat sealing without desoldering
(2) Knife seam is clear, line depth is even
(3) Grain is not damaged
(4) Bottom cover is not skewed
(1) The clip is brightly electroplated, the electroplating layer does not peel, and there is no rust
(2) The positioning error of the clip on the box surface is not greater than 1 mm, firmly positioned
(3) There is no rust or burr on the outer edge of the iron sheet
(4) Magnetic properties are greater than 400×10-^T
(1) When placed flat, it can withstand a static pressure greater than 300N(2) At -10～40℃, it does not deform statically(3) The box surface can withstand more than 10,000 folding times
(1) No color difference
(2) No deformation or dents
(3) It will not break when it falls freely from a height of 1 m (water-mixed ground)(1) Ultrasonic welding is firm, there is no overflow on the welding surface, and the position is accurate
(2) The adhesive is firmly bonded, without stains, and the position is accurate
(3) The product size basically meets the design requirements(4) The knife line is slightly deep or shallow, and the surrounding is smooth, without obvious burrs, holes, cracks, and basically no deformation. The bottom cover is tilted no more than 1mm
(1) Heat sealing without desoldering
(2) The seam is clear and the line depth is uniform
(3) There are no more than two hot-stamping defects, each no more than 1mm (4) The bottom cover is tilted no more than 1 mm
(1) The clip is electroplated brightly, the electroplating layer does not peel, and there is no rust (2) The positioning error of the clip on the box surface is no more than 2mm, and the positioning is firm
(3) There is no rust or burr on the exposed iron sheet
(4) Magnetism 380×10-4~400×10-1T (1) When placed flat, it can withstand a static pressure greater than 300N (2) At -10~40℃, it does not deform statically (3) The box surface can withstand folding greater than 7500 times
(1) Slight color difference
(2) No deformation, no obvious dent
(3) No breakage when falling freely from a height of 1m (cement floor) (1) Strong ultrasonic welding, basically no overflow on the welding surface (2) Strong adhesive bonding, no stain
6.1 Magnetism
Measure the highest value of magnetic steel with a Tesla meter (original name: Gauss meter, 1Gs-10-4T). 6.2 Comprehensive mechanical properties
6.2.1 Folding resistance
Position the sample on a special folding machine, fold the box surface and tongue 90° at a frequency of 60 times/min, and stop the machine after reaching the specified number of times. Visual inspection shows that there should be no breakage.
6. 2.2 Temperature resistance
Put the sample at 40℃ and -10℃ for 2h each, and visual inspection shows that there is no deformation. 6.2.3 Pressure resistance
Put the sample flat, put a wooden board on the sample (the thickness of the board is 1cm, and each side is 2cm larger than the sample), and put the weight specified in the standard on the board. It is visually observed that there is no deformation.
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6.3 For items without data indicators, they are all inspected by visual inspection and touch, and the items with dimensions are inspected with calipers. 6.4 Test conditions
Bending resistance should be tested at a temperature of (23±2)℃, and other items should be tested at room temperature. 7 Inspection rules
7.1 Product inspection is divided into delivery inspection and routine inspection. 7.2 This inspection adopts the piece method, and the unit product is one piece. 7.3 The delivery inspection of each batch of products shall be in accordance with the provisions of the special inspection level S-4 or general inspection level 1 of GB/T2828, and the sampling plan for normal inspection.
7.4 The items for acceptance inspection are No. 1, 23, 4, 7, and 8 in Table 1. The categories of nonconforming products, technical requirements, test methods, and acceptable quality level (AQL) values are as specified in Table 2.
Classification of nonconforming products
Injection molded parts
Technical requirements
Test methods
Acceptable quality level (AQL)
First-class products
Note: No. 5.2.1 in Table 2 refers to the technical requirements of No. 1 in Table 1 in Article 5.2. The following numbers are similar. 7.5 Routine inspection
Accepted productsWww.bzxZ.net
7.5.1 Routine inspection is carried out in accordance with the discrimination level 1 and the one-time sampling plan in GB/T2829. 7.5.2 The samples for routine inspection must be randomly sampled from the samples that have passed the acceptance inspection, and all of them must be accepted according to the items in Table 1. If nonconforming products are found, they should be replaced with acceptable products.
7.5.3 Routine inspections shall be conducted every six months. They shall also be conducted when the design, key process, main raw materials are changed or when production is stopped for more than three months and then resumed.
7.6 The items of routine inspections and the RQL values shall be as specified in Table 3. Table 3
Rejected products
Inspection group
Technical requirements
Test methods
Rejected quality level (RQL)
First-class products
Note: No. 5.2.5 (4) in Table 3 refers to the technical requirement of item (4) of No. 5 in Table 1 of Article 5.2. The following numbers are similar. 8 Marking, packaging, transportation and storage
8.1 Marking: The outer packaging shall have relevant packaging marks and the product shall have trademarks. 8.2 Export packaging: The outer packaging and the intermediate packaging shall comply with the export requirements of each export port. Standard authorized network wmg.bzs050.2om China industry science and technology division fee one-load qualified products
QB/T 1587 --1992
8.3 Domestic sales packaging: The outer packaging box should have the product name, article number, trademark, quantity, weight, volume, factory name, factory address, factory date, standard number or according to the requirements of local commercial units.
8.4 During storage and transportation, it should be protected from sunlight, heat, drop, heavy pressure and moisture. During storage and transportation, it should be 2 meters away from heat sources above 40℃. 5 Store the product under the above conditions, and the shelf life is one year from the date of leaving the factory. 8.5
Additional instructions:
This standard was proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Sports and Cultural Products Standardization Center. This standard was drafted by Shanghai Plastic Packaging Factory and Tianjin Haihe Cultural and Educational Products Factory. The main drafters of this standard are Luo Husheng, Zhang Zizhong and Song Zhongan. 162
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