This standard specifies the technical requirements and test methods for packaging materials and fertilizer packages of solid chemical fertilizers. It is applicable to the packaging of solid chemical fertilizers such as nitrogen fertilizers, phosphate fertilizers, potash fertilizers, compound fertilizers, and mixed fertilizers. GB 8569-1997 Solid Chemical Fertilizer Packaging GB8569-1997 Standard Download Decompression Password: www.bzxz.net

GB85691997
This standard is a revision of GB8569-88 "Packaging of Solid Chemical Fertilizers" based on a large number of experiments. The test method of fertilizer packaging is carried out in accordance with the Chinese national standard that is equivalent to the international standard, and also refers to the dangerous goods transportation rules of the International Maritime Organization (MO).
When revising GB8569-88, the content of the standard that has been proven to be practical in practice is retained. The following modifications are made to some of the technical requirements for packaging:
1. For 40kg/bag, type B bags are used, and the upper seam strength is changed to 29.4MPa? For 50kg/bag, type C bags are used, and the upper seam strength is changed to 34.3MPa.
2. The thickness of the film bag used for inner packaging is appropriately adjusted. 3. The packaging materials of ammonium nitrate and ammonium bicarbonate are also appropriately modified. The drop test method for fertilizer packaging is carried out in accordance with the national standard of my country that is equivalent to the international standard, but in terms of inspection rules, specific provisions are made according to the special requirements of fertilizers. This standard replaces GB8569-88 from the date of implementation. Appendix A of this standard is the appendix of the standard. This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Shanghai Research Institute of Chemical Industry of the Ministry of Chemical Industry. Drafting units of this standard: Shanghai Research Institute of Chemical Industry of the Ministry of Chemical Industry, Fertilizer Plant of Jilin Chemical Industry Corporation. The main drafters of this standard: Liu Miao, Chu Yunlong, Cui Yuxiang. This standard was first issued in 1987.
1 Scope
National Standard of the People's Republic of China
Packing of solid chemical fertilizers
Packing of solid chemical fertilizersGB8569-1997
Replaces GB8569-88
This standard specifies the technical requirements and test methods for packaging materials and fertilizer packaging of solid chemical fertilizers. Applicable to the packaging of solid chemical fertilizers such as nitrogen fertilizer, phosphine fertilizer, potash fertilizer, compound fertilizer, and mixed fertilizer. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB190-90 Dangerous goods packaging mark
GB191--90 Pictorial mark for packaging, storage and transportation
GB1040--92 Test method for tensile properties of plastics GB4857.1-92 Method of marking various parts of packaging and transport packages during testing GB 4456-84
Polyethylene blown film for packaging
GB 8946---88
GB 8947--88
3 Technical requirements
Plastic woven bags
Composite plastic woven bags
Technical requirements for packaging materials
The packaging materials for solid chemical fertilizers should be selected according to the provisions of Table 1. Selection of solid chemical fertilizer packaging materials
Outer bag:
Outer bag:
Outer bag:
Outer bag:
Plastic woven bag Plastic woven bag Plastic woven bag Plastic woven bag Two-in-one bag powder
Inner bag:
Ammonium sulfate
Ammonium bicarbonate
Ammonium chloride
Superphosphate
High-density polyethylene film bag
Inner bag:
Inner bag:
Inner bag:
(Plastic woven
Modified polyethylene low-density polyethylene polyvinyl chloride thin cloth/film) film bag
Polyethylene film bag
State Bureau of Technical Supervision approved 20
Two-in-one Bottom
bag (plastic woven
woven cloth/film)
three-in-one bag
(plastic woven
cloth/film/cowhide
two-in-one bag
(plastic woven
cloth/kraft paper)
1998-02-01implementation
packaging material
calcium magnesium phosphate fertilizer
ammonium nitrate
ammonium phosphate
nitrophosphate fertilizer
compound fertilizer
potassium fluoride
outer bag:
outer bag:
GB8569—1997
table 1 (end)
outer bag:
outer bag:
plastic woven bag
plastic woven bag plastic Woven bag
Plastic woven bag
Inner bag:
High-density poly
ethylene film bag
Inner bag:
Modified polyethylenewww.bzxz.net
Low-density polyethylene
Film bag
Epene film bag
Two-in-one bag
Three-in-one bag
Two-in-one square bottom
bag (plastic woven
(plastic woven
Inner bag:
woven cloth/film)
PVC thin cloth/film)
Note: Those with "√" in the table are allowed to be used as packaging materials; those with "-" in the table are not allowed to be used as packaging materials (plastic woven
cloth/film/cowhide
All-in-one bag
Plastic woven
Cloth/kraft paper)
Plastic woven bags for packaging solid chemical fertilizers shall comply with the provisions of GB/T8946 standard; composite plastic woven bags shall comply with the provisions of 3.1.21
GB/T8947 standard.
3.1.3 Plastic film bags in multi-layer bags use polyethylene blown film for packaging, and their physical and mechanical properties shall comply with the technical requirements of Table 4 of GB4456 standard, with the film thickness less than (or equal to) 0.05mm. Its main technical indicators are tensile strength (longitudinal and transverse) greater than (or equal to) 9.8MPa, elongation at break (longitudinal and transverse) greater than (or equal to) 140%, and right-angle tear strength (longitudinal and transverse) greater than (or equal to) 3.92MPa. When using soft polyvinyl chloride film bags as inner bags, the thickness of the film bags shall be greater than (or equal to) 0.06mm. 3.1.4 It is not allowed to use plastic produced from recycled materials as inner or outer bags of multi-layer bags. The allowable tolerance of the dimensions of multi-layer bags and composite bags shall comply with the provisions of Table 2. 3.1.5
Table 2 Allowable tolerance of the dimensions of multi-layer bags and composite bags Items
Plastic woven bags
Plastic film bags
Composite plastic woven bags
Filling coefficient
(L+30)±10
(b+20)±10
80%~90%
3.2 Filling temperature and bag type selection
3.2.1 When filling a multi-layer bag composed of a plastic woven bag and a high-density polyethylene (including modified polyethylene) film bag, the material temperature should be less than 95℃.
3.2.2 When filling a multi-layer bag composed of a plastic woven bag and a low-density polyethylene film bag, the material temperature should be less than 80℃. 3.2.3 When filling with composite plastic woven bags, the material temperature should be less than 80℃. 3.2.4 When the material mass is 25kg, use type A bag; when the material mass is 40kg, use type B bag; when the material mass is 50kg, use type C bag.
3.3 Technical requirements for packaging
3.3.1 The packaging should comply with the requirements in Table 3. Item
Number of stitches at the upper seam
Needle/10cm
Strength of the upper seam
Heating force of polyethylene film bag mouth, N/5cm
Hemming width, mm
Distance from suture to seam edge, mm
GB8569--1997
Table 3 Technical requirements for fertilizer packaging
Industrial sewing machine
Civil sewing machine
Material weight of internal material 25 kg
Material weight of internal material 40 kg
Material weight of internal material 50 kg
Technical requirements
3.3.2 The upper seam must be folded (curled) and sewn. When the polyethylene film bag lined with the multi-layer bag is sealed or tied by heat sealing, the outer bag may not be folded.
3.3.3 The sutures shall be made of acid-resistant and alkali-resistant synthetic fiber threads or other threads of equivalent quality. 3.3.4 After the test according to the method specified in Article 4.4, the fertilizer packages shall not break and the contents shall not be lost. 4 Test methods
4.1 The seam strength of the fertilizer packages shall be tested in accordance with the provisions of GB1040. 4.2 The distance from the folded edge of the fertilizer package to the seam edge shall be measured with a ruler accurate to 1.mmrm, and three measurements shall be made in the middle or 100mm from the edge. The ruler shall be parallel to the edge of the bag, and the value with the largest difference from the standard size shall be taken as the measurement result. 4.3 The heat sealing force of the polyethylene film bag of the fertilizer package shall be tested in accordance with the provisions of GB1040. 4.4 Drop test
4.4.1 The marking of each part of the fertilizer package for the test shall comply with the provisions of GB4857.1. 4.4.2 When using a test stand or manual method to perform the drop test, the fertilizer package should be able to freely fall vertically and the falling surface should be able to touch the ground horizontally
4.4.3 The drop height of ammonium nitrate package is 0.8m and the drop height of other fertilizer packages is 1.2m. 4.4.4 The test conditions are normal temperature and pressure. The test site is a flat and smooth cement floor (thickness greater than 10cm) or steel plate (thickness greater than 10mm).
4.4.5 Test steps (using the same item): first drop on surface 1 or surface 3,
second drop on surface 2 or surface 4,
third drop on surface 5 or surface 6.
5 Inspection rules
5.1 Fertilizer manufacturers or fertilizer packaging plants shall ensure that the fertilizer packages leaving the factory meet the requirements of this standard. Users have the right to inspect and accept the fertilizer packages received at the fertilizer manufacturer or fertilizer packaging plant in accordance with the provisions of this standard. 5.2 Fertilizer packages shall be inspected batch by batch.
5.3 For each batch of fertilizer packages, except for the upper seam strength and drop test items, the tests of other items shall be carried out in accordance with the special inspection specified in Appendix A (Appendix to the standard). When the inspection is judged to be unqualified according to the qualified quality level, it shall be carried out according to the stricter sampling inspection. When the stricter sampling inspection still fails, the batch of fertilizer packages shall be measured as unqualified packaging. 22
GB8569—1997
5.4 Fertilizer manufacturers or fertilizer packaging plants shall carry out drop tests at least once a month. The sampling quantity for the drop test of fertilizer packages is three packages, and the packages are randomly selected from the batches judged as qualified by Article 5.3. When the inspection is judged to be unqualified, the batch of fertilizer packages is unqualified.
5.5 The upper seam strength test is conducted once a month. The batches judged as qualified by the inspection of Article 5.4 are sampled and the qualified quality level is judged according to Appendix A (Appendix of the Standard), inspection level S-2, and letter B. When it is judged to be unqualified, it should be sampled once more strictly. If it is still judged to be unqualified, the batch of fertilizer packages is unqualified. 6 Marking
The marking of fertilizer packages should be marked with relevant marks according to the nature of the materials inside. 6.1 When the materials inside are dangerous goods, the packaging marks specified in GB190 should be marked according to the provisions of the "Railway Dangerous Goods Transport Rules". 6.2 The packaging storage and transportation marks specified in GB191 should be marked according to the nature of the materials inside. 6.3 In the fertilizer product standards, the specific marking of the fertilizer package shall be specified in GB190 and GB191. 7 Transportation and storage
7.1 The transportation vehicles for fertilizer packages shall be clean, flat, and free of protruding sharp objects to avoid piercing or scratching the packages. Illegal loading and unloading is strictly prohibited. 7.2 Fertilizer packages shall be stored in a warehouse with a flat, cool, ventilated and dry site. Open-air storage is not allowed to prevent sun and rain. The storage of products with special requirements shall comply with the relevant product standards. The stacking height shall be less than 7 meters. 23
GB8569—1997
Appendix A
(Appendix to the standard)
Sampling table for fertilizer packages
The number of fertilizer packages sampled and the judgment of the qualified quality level given in Table A1 shall be judged according to the provisions of Table A1. Sampling number of fertilizer packages sampled and the judgment of the qualified quality level shall be judged according to the provisions of Table A1. Strict single sampling inspection
Special inspection
Qualified quality level||tt| |Sample size
Inspection level
Qualified quality level
Unqualified
S—3 letters
Sample size
Inspection level
Batch range
Unqualified
S—2 letters
91~150
151~500
501～1200
1201~10 000
1000135000
>35000
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