This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of calcium plastic corrugated boxes. This standard applies to calcium corrugated boxes made of polyethylene resin as raw material, calcium carbonate as filler, various additives, and calendered and hot-bonded to form calcium plastic double-sided single corrugated boards and nails. GB/T 6980-1995 Calcium plastic corrugated boxes GB/T6980-1995 standard download decompression password: www.bzxz.net
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of calcium plastic corrugated boxes. This standard applies to calcium corrugated boxes made of polyethylene resin as raw material, calcium carbonate as filler, various additives, and calendered and hot-bonded to form calcium plastic double-sided single corrugated boards and nails.

National Standard of the People's Republic of China
Calcium Plastic Corrugated
Calpbox
Subject Content and Scope of Application
GB/T6980—1995
Replaces GB6980-86
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of calcium plastic corrugated boxes. This standard applies to calcium plastic corrugated boxes (hereinafter referred to as calcium plastic boxes) made of polyethylene resin as raw material, calcium carbonate as filler, various additives, and calendered and hot-glued calcium plastic double-sided single corrugated board (hereinafter referred to as calcium plastic board) and nailed together. 2 Reference standards
GB191 Packaging storage and transportation pictorial mark
GB/T1040 Test method for tensile properties of plastics GB/T 1041 Test method for compression properties of plastics GB2828 Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) GB2918 Standard environment for state adjustment and testing of plastic specimens GB/T4857.4 Packaging and transportation package pressure test method GB4892 Rigid rectangular transport packaging size series QB/T1130 Plastic right-angle tearing performance test method 3 Technical requirements
3.1 Specifications
3.1.1 Specifications of calcium plastic boxes
3.1.1.1 Length and width
According to GB4892, 6 sizes (box external dimensions) are generally used, see Table 1. Table 1
3.1.1.2 Height
Agreed by both the supply and demand parties, with a limit deviation of +5mm. Approved by the State Bureau of Technical Supervision on December 8, 1995 Length×Width
600X400
500×400
400×300
400×200
300×200
200×200
Limit Deviation
Implemented on August 1, 1996
3.1.2 The specifications of calcium plastic board shall comply with the provisions of Table 2. Item
Thickness of calcium plastic board, mm
Number of corrugated ribs, root/100mm
3.2 Appearance
The appearance of calcium plastic box shall comply with the provisions of Table 3.
Box surface and color
Delamination area
Corrugated ribs are skewed
Box cover bottom joint
Box nail spacing
Distance between head and tail nails and pressure line mark
GB/T 6980--1995
Outer surface is flat, and the same specification and the same batch of products have basically the same color. No more than 15cm* per square meter, and no more than 4cm2 per place
In a square area with a side length of 300mm, the difference in the number of corrugated ribs does not exceed 1 mark
No more than 10 holes with a diameter of 1mm per square meter on the outer surface, and no more than 10 holes with a diameter of 2mm per square meter on the inner surface
The gap is no more than 5mm, and the difference between left and right is no more than 10 mm pattern labels should comply with the provisions of GB191, with clear handwriting and no obvious falling off. Single nails should not exceed 55mm, double nails should not exceed 75mm10±5mm
Note: The spacing between box nails refers to the parallel distance between the closest two adjacent nails. 3.3 Physical and mechanical properties
3.3.1 The pressure resistance of empty calcium plastic boxes should comply with the provisions of Table 4. Table 4
Empty box pressure resistance, N
Superior products
≥5 000
3.3.2 The physical and mechanical properties of calcium plastic boards should comply with the provisions of Table 5. 26
First-class products
≥4 000
Qualified products
≥3000
Tensile strength, N
Elongation at break, %
Plane compression force, N
Vertical compression force, N
Tear force, N
Low temperature folding resistance
4Test method
GB/T6980—1995
Superior products
≥350
≥1200||tt ||≥700
—No crack at 40℃
First-class products
≥300
≥900
≥550
No crack at 20℃
Qualified products
≥220
≥700
≥450
—No crack at 20℃
4.1 Samples
Specifications and appearance samples shall be carried out in accordance with the inspection rules in this standard. Physical and mechanical properties samples Four samples are randomly selected from the samples for testing, of which three are used for empty box compression test and one is used for sample preparation of calcium plastic board. 4.2 The standard environment for sample state adjustment and testing shall be carried out in accordance with the standard environment and normal deviation range specified in GB2918, and the test shall be carried out under this condition, and the state adjustment time shall not be less than 4h.
4.3 Specifications
4.3.1 Calcium plastic box
Use a steel ruler with an accuracy of 0.5mm to measure the parallel distance of each side of the length, width and height of each sample box, and take the maximum or minimum value. 4.3.2 Thickness of calcium plastic board
Use a vernier caliper with an accuracy of 0.02mm to measure the thickness of each calcium plastic board of each sample box perpendicular to the direction of the corrugated ribs, measure 5 points at random, and take the minimum value.
4.3.3 Number of corrugated ribs
Use a steel ruler with an accuracy of 0.5mm to measure any position on the surface of each sample box, counting from the first corrugated rib as the starting point to 100mm, record the number of corrugated ribs, and take the minimum value. 4.4 Appearance
Visually inspect under natural light and measure with corresponding measuring tools. 4.5 Physical and mechanical properties
4.5.1 Calcium plastic box empty box pressure resistance
Perform according to GB/T4857.4.
Seal the upper cover and lower bottom of the box to be tested with tape, and then place it flat between the two pressure plates of the testing machine, so that the center line of the sample coincides with the vertical line of the center of the two pressure plates of the testing machine. The test speed is 10±2mm/min. Record the maximum value of the compression bending of the empty box around, and take the average value of the test results of 3 boxes, accurate to 1N.
4.5.2 Calcium plastic board
4.5.2.1 Sample preparation
Cut it on the sample box with the specified punch as shown in Figure 1. 27
GB/T 6980--1995
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Figure 1 Schematic diagram of sample cutting
1-Tear force sample, 2-Low temperature folding test sample, 3-Tear force sample, 4-Plane compression test sample; 5-Vertical compression test sample 4.5.2.2 Breaking force and elongation at break
Perform the test in accordance with the provisions of GB/T1040.
Wall reinforcement direction
The test sample is dumbbell-shaped (see Figure 2), with a gauge length of 70mm and a test speed of 50±5mm/min. It is expressed as the arithmetic mean of the test results of 5 samples, accurate to 1N.
Figure 2 Breaking force sample
4.5.2.3 Plane compression
Perform the test in accordance with the provisions of GB/T1041.
Cut 5 circular specimens with a diameter of 80±0.5mm (area of ​​50cm2), the test speed is 10±2mm/min, the first peak value on the recorder is taken as the compression load, and the test results are expressed as the arithmetic mean of the 5 specimens, accurate to 1N. 4.5.2.4 Vertical compression force
Perform in accordance with the provisions of GB/T1041.
Cut 5 100mm×60mm notched specimens (see Figure 3), place the specimens vertically between the two pressure plates of the testing machine in the direction of the corrugated ribs so that the center line of the specimens coincides with the center line of the two pressure plates, the test speed is 10±2mm/min, take the maximum load when the middle part of the specimen (notch) is compressed and bent as the vertical compression force, expressed as the arithmetic mean of the test results of the 5 specimens, accurate to 1N. ST*009
100±0.25
Figure 3 Vertical compression force specimen
4.5.2.5 Tearing force
Perform according to the provisions of QB/T1130.
Cut 5 right-angle tearing specimens, align the right-angle mouth of the specimen with the corrugated ribs, so that the tearing direction is consistent with the direction of the corrugated ribs, and the test speed is 200±50mm/min. The arithmetic mean of the test results of 5 specimens is expressed, accurate to 1N. 4.5.2.6 Low-temperature folding resistance
The specimen is a long strip with a length of 100mm and a width of 25mm, 3 pieces per group. Place the specimen in industrial ethanol at a specified temperature, and the temperature fluctuation is allowed to be ±2℃. Take it out after 15 minutes, clamp it with two wooden boards, and immediately bend the pressure line part 90°, and then bend it 180° in the opposite direction. The bending should be completed within 30s, and observe whether there is a crack at the bending part. All three samples are qualified if they are not cracked.
5 Inspection rules
5.1 batch
Calcium plastic boxes are inspected and accepted in batches. The calcium plastic boxes produced with the same brand of raw materials, the same formula and the same process conditions shall not exceed 40,000 pieces per batch.
5.2 Inspection classification
5.2.1 Factory inspection
Factory inspection includes 1, 2, 3, 4 and 5 items of Table 5 in 3.1, 3.2 and 3.3.2. 5.2.2 Type inspection
Type inspection items are all items in the technical requirements. Type inspection should be carried out in the following situations: 29
GB/T 6980--1995
Trial production and identification of new products or old products transferred to the factory; after formal production, if there are major changes in structure, raw materials, process, and formula, which may affect product performance; during normal production, inspection shall be carried out every six months; c.
When the product is resumed after a long-term suspension; when the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. 5.3 Sampling
Random sampling method is adopted. Each calcium plastic box is a sample unit, and the specifications and appearance are carried out in accordance with GB2828. A secondary normal sampling plan is adopted, the general inspection level is I, and the qualified quality level (AQI.) is 6.5, see Table 6.
Physical and mechanical properties are randomly selected from the sampled samples for inspection. 5.4 Judgment rules
5.4.1 Judgment of qualified items
5.4.1.1 Judgment of specifications and appearance
The test results of specifications and appearance shall be judged according to Table 6. Table 6
26~50
91~150
151~280wwW.bzxz.Net
281~500
501~1200
1201~3200
5.4.1.2 Judgment of physical and mechanical properties
Sample size
Cumulative sample size
Number of qualified judgments
Number of unqualified judgments
If there are unqualified items in the test results of physical and mechanical properties, double samples shall be taken from the original batch again, and the unqualified items shall be re-tested. If all the re-test results are qualified, the physical and mechanical properties are qualified. 5.4.2 Determination of qualified batches
If the specifications, appearance, physical and mechanical properties are all qualified according to the specified test results, the whole batch is judged to be qualified. 5.4.3 Determination of product quality level
Determine according to the lowest level of all test results30
6 Marking, packaging, transportation, storage
6.1 Marking
GB/T6980-1995
Calcium plastic boxes are generally packed in 10 to 30 pieces. Each package should have a certificate of conformity and indicate the product name, manufacturer name and address, specifications, quantity, quality grade, product standard number, trademark, production date or batch number, inspector's seal, etc. 6.2 Packaging
The packaging materials shall be agreed upon by the supply and demand parties, and each package of products shall be tied firmly. 6.3 Transportation
Calcium plastic boxes should be loaded and unloaded gently during transportation to prevent mechanical collision, avoid sun and rain, and keep the packaging intact. 6.4 Storage
Calcium plastic boxes should be stored in a clean, dry, cool warehouse, neatly stacked and away from heat sources. The storage period shall not exceed one year from the date of production.
Additional remarks:
This standard is proposed by the China Light Industry General Association.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Plastic Products. This standard was drafted by the Plastic Processing and Application Science Research Institute of the Ministry of Light Industry and Shanghai Caitlin Packaging Co., Ltd. The main drafters of this standard are Li Deying and Chen Haiyang. 31
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