This standard specifies the product classification, technical requirements, test methods and inspection rules, marking, packaging, transportation, storage and instructions for use of environmentally friendly asphalt flexible packaging bags. This standard applies to various types of asphalt flexible packaging bags. BB/T 0021-2001 Environmentally friendly asphalt flexible packaging bags BB/T0021-2001 Standard download decompression password: www.bzxz.net
This standard specifies the product classification, technical requirements, test methods and inspection rules, marking, packaging, transportation, storage and instructions for use of environmentally friendly asphalt flexible packaging bags. This standard applies to various types of asphalt flexible packaging bags.

ICS55.080
Packaging Industry Standard of the People's Republic of China
BB/T 0021—2001
Environmentally friendly asphalt flexible packaging bags
2001-12-12 Issued
Issued by China National Packaging Corporation
2002-01-01 Implementation
BB/T 0021—2001
Environmentally friendly asphalt flexible packaging bags specified in this standard have the characteristics of anti-bitumen adhesion, high temperature resistance, and the bag body is easy to recycle and reuse, which fully meets the requirements of environmental protection. Asphalt packaged with this product can be stored for a long time: the appearance is neat, the storage and transportation space is saved, especially the transportation by train and ship is more suitable and cheap. The formulation of this standard can play a due role in improving the quality of this type of product and standardizing the production of the industry. This standard was proposed by China National Packaging Corporation. This standard is under the jurisdiction of the National Packaging Standardization Technical Committee. This standard was drafted by: National Packaging Product Quality Supervision and Inspection Center (Tianjin) Dalian Xinke Packaging Materials Co., Ltd. The main drafters of this standard are: Li Hua, Niu Chemei, Feng Yong, Hong Deren, Liu Ying, 1 Scope
Environmentally friendly asphalt flexible packaging bags
BB/T 0021 2001
This standard specifies the product classification, technical requirements, test methods and inspection regulations, marking, packaging, transportation storage and instructions for use of environmentally friendly asphalt flexible packaging bags.
This standard applies to various types of asphalt flexible packaging bags (hereinafter referred to as packaging bags). 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. The references are dated documents, and all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any un-dated referenced document, its latest version shall apply to this standard. GB/T191 Small symbol for packaging, storage and transportation GB/T4857.5-1992 Drop test method for packaging and transportation G139774-1036 Cement packaging bag 3 Product classification 3.1 The product is divided into V-shaped folding bag and folding bag. (Figure 1, Figure 2). 3.2 V-shaped folding bag is suitable for holding 40 kg asphalt. Non-folding bag is suitable for holding 25 kg asphalt. cr2 Length, in millimeters (mm), Width, in millimeters (mm): folding width, in millimeters (mm) Figure 1 √-shaped folding bag 4 Technical requirements See Table 1 for the size and deviation of the packaging bag.
Figure 2 Bag without folding edge
Table 1 Dimensions and deviations of packaging bags
Nominal ruler
Nominal dimension
Width L
Degree is mm
Analysis width (
Nominal dimension
BB/T 0021—2001
4.2 Appearance: The bag is flat, without cracks, without sticking, and the printing is clear. 4.3 The physical performance indicators of packaging bags shall meet the requirements of Table 2 Table 2 Physical performance indicators of packaging bags
Material high temperature tensile strength
N/50mm
Bottom high temperature tensile strength/(N/50mm）
Anti-stickiness, 25±5 C:
Medium solidity/times (25C)
Bottom heat resistance
5 Test method
5.1 Appearance
Visual inspection under natural light.
5.2 Dimensional deviation
Parts performance index
Peelable
Test details: After 80C.30min treatment, there should be no abnormal conditions such as debonding and melting marks. Use a steel ruler with an accuracy of 1mm to measure the parts shown in Figure 1 and Figure 2. Each part has 3 points, and the average value is taken to calculate the deviation. 5.3 Sample pretreatment conditions
The sample is treated in an environment of 23℃=2℃ and humidity change to 50%=2: L5.4 High temperature tensile strength
5.4.1 Material tensile strength
|5.4.1.1 Detailed method: Cut two samples of 300mm in length and 50mm in width along the length direction (longitudinal direction) and width direction (transverse direction) of the bag body, and cut them from two sample bags, for a total of six samples. 5.4.1.2 Place the sample in an oven at 180°C = 2°C for 20 minutes. Test it in the temperature control box of the tensile testing machine. The temperature in the control box is 180°C ± 2°C, the distance between the tools of the tensile testing machine is 200mm, and the test speed is 200mm/min. The test should be done 10 minutes after the sample is taken out.
5.4.1.3 Record the maximum force of the sample during the stretching process. The test results are expressed as the arithmetic mean value, accurate to N. 5.4.2 Bottom tensile strength
5.4.2.1 Sampling method: Take two samples of 150mm long and 5mm wide along the direction perpendicular to the bottom seam. The width of the seam part should be the same as the width of the bag body, and one more stitch should be added on the left and right. Cut from three sample bags, a total of six samples. 5.4-2.2 After the sample is treated in an oven at 180C and 2℃ for 15min, The test is carried out in the temperature control box of the test machine. The temperature in the control box is 180: ± 2°C, the distance between the clamps of the pulling test machine is 200mm, and the test speed is 200mm/mil. 5.4.2.3 Record the maximum value of the sample during the pulling process. The test results are expressed as arithmetic mean. Accurate to 1N. 5.5 Anti-adhesiveness
5.5.1 Cut a sample strip with a length of 110mm and a width of 59mm from the sample bag. 5.5.2 Apply an appropriate amount of heat-melted to 180℃2°C evenly on three sample strips 1, with a thickness of about 2mm, and leave 10mm at the end of the sample strip for coating.
5.5.3 Place the coated sample in a 25℃+5℃ environment to cool for 21h, then peel it off by hand. During the peeling process, observe whether the peeled sample can be completely separated from the asphalt.
5.6 Bottom heat resistance
Take a sampling bag, cut off the bottom of the sample bag, and the width is 10cm. Put the sample into a drying oven at 180℃=2℃, take it out after 301min, and observe the sample.
5.7 Firmness bzxz.net
5.7.1 The test environment is normal temperature and humidity.
5.7.2 The test drop height is 1m.
5.7.3 The test method shall be in accordance with the provisions of Appendix B of G39774-1990. 6 Inspection rules
6.1 Batch
Products with the same raw materials, formula and model are called batches, and each batch shall not exceed 50,000 pieces. 6-2 Sampling
BB/T 0021—2001
6.2.1 The samples for appearance inspection shall be traced according to the normal sampling plan specified in GB/T2828. The batch quality shall be expressed by the number of unqualified products per 100 units. The general sampling level is 1, and the qualified quality level (AQL) is 6.5, see Table 3, Table 3
501 ---1 200
1 201~-3 2C0
3 201~coco
10 001--35 000
35001-150000
Sample size
Qualified judgment number A
6.2.2 Physical performance sampling is based on batches, and 15 samples are randomly thrown out of each batch, of which 5 are for backup samples. 6.3 Inspection classification
6.3.1 Factory inspection items include external specifications, dimensional deviation and fastness. 6.3.2 Type inspection
Type inspection items include all technical requirements. Type inspection should be carried out in the following cases: a) When a new product is successfully developed and mass-produced; h) When there is a significant change in raw and auxiliary materials that may affect product quality during normal production; c) When production is suspended for more than half a year and then resumed; d) When the national quality supervision and inspection department makes an inspection request. 6.4 Judgment rules
6.4.1 Quality judgment of sample units
Number of unqualified judgments R
The appearance and deviation of the packaging bag shall be inspected in accordance with the requirements of Articles 4.1 and 4.2, and each packaging bag shall be a sample unit. If all inspection items are If the items are qualified, the sample unit is qualified.
6.4.2 Determination of qualified batches
6.4.2.1 Appearance and size deviation of packaging bags are determined according to Table 3. 6.4.2.2 Physical properties If there are small qualified items, double sampling should be done in the original batch. And the unqualified items should be retested. If the retest results are still unqualified, the batch is unqualified.
7 Marking, packaging, transportation, storage
7.1 Marking
Product packaging should be printed with the manufacturer's name, product name, specification, standard number, trademark, ex-factory date, etc. BB/T 0021—2001
7.2 Packaging
7.2.1 The packaging of the packaging bag should be firm, flat and suitable for transportation. 7.2.2 Different varieties, models and specifications of products are not allowed in each package. 7.2.3 Each package is generally divided into 30 or 50 pieces, or as agreed by the supply and demand parties. 7.2.4 Each package should have a product certificate. 7.3 Transportation and storage
During transportation and storage, the packaging bag should not be close to fire or heat sources, and should not be exposed to moisture. The shelf life of the packaging bag is 1 year. Copyright is proprietary and infringement must be investigated
Book number: 185066: 214912
BB/T 0021-2001
Pricing:
People's Republic of China Packaging
Industry standard
Environmentally friendly asphalt flexible packaging bag
BB/T 9C21—2001
Edition of China Standards Press
No. 1G, Sanguo Hebei, Fuxingmenwai, Beijing
Postal code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Huangdao Printing Factory, and distributed by Beijing Distribution Office of Xinhua Bookstore
Format 880×12301/16
First edition in February 2003
Sold by Xinhua Bookstores in various places
Printed sheets 172
Number of words 1? Thousand words
First printing in January 2003
Print run 1-8C0
Book number: 155066·214012
Price 8.00 yuan
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