GH/T 1089-2013 Polyethylene bags for cotton packaging GH/T1089-2013 Standard compression package decompression password: www.bzxz.net
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for polyethylene bags for cotton packaging. This standard is applicable to Type I cotton bags with polyethylene resin as the main raw material.
This standard was drafted in accordance with the rules given in GB/T1.1-2009.
This standard was proposed by the All-China Federation of Supply and Marketing Cooperatives.
This standard is under the jurisdiction of the National Technical Committee for Cotton Processing Standardization (SAC/TC407).
The drafting units of this standard: Nantong Yufeng Plastic Steel Packaging Co., Ltd., Cotton Processing Branch of China Cotton Association, China Cotton Reserve Management Corporation, Zhengzhou Cotton and Linen Engineering Technology Design Institute, Beijing Zhongmian Machinery Complete Equipment Co., Ltd., Xinjiang Uygur Autonomous Region Fiber Inspection Bureau, Zhengzhou Commodity Exchange, Nantong Standardization Association, Changzhou University. The
main drafters of this standard: Cai Guangquan, Hu Chunlei, Hou Zhenwu, Li Yan, Li Boxi, Yin Qingyun, Wang Limin, Wang Fuzheng, Yang Sen, Li Jingchun, Li Jiang, Wu Jinping, Wei Bing.
The following documents are indispensable for the application of this document. For all dated references, only the dated version applies to this document. For all undated references, the latest version (including all amendments) applies to this document.
GB/T1040.3—2006 Determination of tensile properties of plastics Part 3: Test conditions for films and sheets
GB/T2828.1 Sampling procedures for inspection by attributes Part 1: Sampling plan for batch inspection indexed by acceptance quality limit (AQL)
GB/T2918 Standard environment for conditioning and testing of plastic specimens
GB/T5453 Determination of air permeability of textile fabrics
GB/T6672 Determination of thickness of plastic films and sheets by mechanical measurement
GB/T6673 Determination of length and width of plastic films and sheets
GB/T9639.1—2008 Test method for impact resistance of plastic films and sheets - Free falling dart method - Part 1: Step method
GB/T10006 Determination of coefficient of friction of plastic films and sheets
GB/T16422.2—1999 Plastics laboratory light source exposure test method Part 2: Xenon arc lamp
QB/T2358 Plastic film packaging bag heat seal strength test method

ICS55.020
Registration number: 41783-2013
People's Republic of China Supply and Marketing Cooperative Industry Standard GH/T1089-2013
Polyethylene bags for ginned cotton packaging
PE bags for ginned cotton packaging2013-10-25Release
All China Federation of Supply and Marketing Cooperatives
2014-03-01Implementation
This standard was drafted in accordance with the rules given in GB/T1.1-2009. This standard was proposed by the All China Federation of Supply and Marketing Cooperatives and is under the jurisdiction of the National Technical Committee for Standardization of Cotton Processing (SAC/TC407). GH/T1089—2013
The drafting units of this standard are: Nantong Yufeng Plastic Steel Packaging Co., Ltd., Cotton Processing Branch of China Cotton Association, China Cotton Reserve Management Corporation, Zhengzhou Cotton and Linen Engineering Technology Design Institute, Beijing Zhongmian Machinery Complete Equipment Co., Ltd., Xinjiang Uygur Autonomous Region Fiber Inspection Bureau, Zhengzhou Commodity Exchange, Nantong Standardization Association, Changzhou University. The main drafters of this standard are: Cai Guangquan, Hu Chunlei, Hou Zhenwu, Li Yan, Li Boxi, Yin Qingyun, Wang Limin, Wang Fuzheng, Yang Sen, Li Jingchun, Li Jiang, Hao Jinping, Wei Bing.
1 Scope
Polyethylene bags for cotton packaging
GH/T1089-—2013
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements of polyethylene bags for cotton packaging (hereinafter referred to as "cotton bale bags"). This standard applies to Type I cotton bale bags with polyethylene resin as the main raw material. 2 Normative references
The following documents are indispensable for the application of this document. For any dated reference, only the dated version applies to this document. For any undated reference, the latest version (including all amendments) applies to this document. GB/T1040.3-2006 Determination of tensile properties of plastics Part 3: Test conditions for films and sheets GB/T2828.1 Sampling inspection procedure by attributes Part 1: Sampling plan for batch inspection indexed by acceptance quality limit (AQL) GB/T2918
3 Standard environment for conditioning and testing of plastic specimens Determination of air permeability of textile fabricsbZxz.net
GB/T5453
GB/T6672
Determination of thickness of plastic films and sheets Mechanical measurement method GB/T6673 Length and width of plastic films and sheets Determination of degree GB/T9639.1-2008 Test method for impact resistance of plastic film and sheeting Free falling dart method Part 1: Step method GB/T10006
Determination method for friction coefficient of plastic film and sheeting GB/T16422.2-1999 Plastics Laboratory light source exposure test method Part 2: Xenon arc lamp QB/T2358
3 Technical requirements
3.1 Specifications
Test method for heat seal strength of plastic film packaging bags The length, width (folded diameter), thickness and deviation of cotton bale bags should comply with the provisions of Table 1. Table 1 Length, width (folded diameter), thickness and deviation of cotton bale bags Basic dimensions and deviations of cotton bale bags/mm
Basic dimensions
3.2 Appearance
Width (folded diameter)
Basic dimensions
3.21 The bag body of cotton bale bags should be translucent natural white or blue. Basic size
Applicable cotton bag type
3.2.2 The heat-sealed part should be free of empty seal and clear lines. The bag body of the cotton bag should be free of burns, scratches, fish eyes, poor plasticization, incompleteness, wrinkles and shape pollution, and foreign matter such as film scraps should not be left inside and outside the bag body. 1
GH/T1089—2013
3.2.3 The bag body of the cotton bag should be designed with ventilation holes according to the area shown in Figure 1. The ventilation holes should be designed with micro holes and strong pores that can be opened and closed freely. The maximum aperture of the micro hole should be less than 2mm. The chord length of the arc pore should be 20mm~35mm, and the arc height should be 5mm~15n. The number of distribution should be 100~120.
When the bottom is heat-sealed, two to three bag vents of 60mm100mm should be retained. 3.2.40
Non-porous area
·Breathable hole warm area·
Explanation:
a=（2100±20)mm
b=(1250±20)mm
c(200±20)mm
d=(200±20)mm.
3.3 Physical and mechanical properties
Arc-shaped pore area
Non-porous area
Schematic diagram of breathable hole distribution area
The physical and mechanical properties of cotton bale bagging shall comply with the requirements of Table 2. Table 2 Physical and mechanical properties of cotton bale bagging
Tensile strength (longitudinal and transverse)/MPa
Elongation at break (longitudinal and transverse)/%
Heat seal strength/(N/15mm)
Impact test, number of samples without rupture
Heat resistance
Non-porous area
Micro-porous area
Non-porous area
Non-porous heat seal area
Non-porous area
Non-porous area
No adhesion at 80C, no melting
Cold resistance
Table 2 (continued)
Broken after artificial accelerated aging test Crack elongation retention rate (longitudinal)/%Static friction coefficient/μs
Air permeability/(mm/s)
4 Test method
4.1 Sample
Non-porous area
Non-porous area
Micro-porous area
Micro-porous area
GH/T1089—2013
-35℃ Folding without cracks
The sample is first inspected for appearance and specifications, and then the sample is cut from the non-porous area and micro-porous area according to the provisions of Table 2 at a distance of 50mm from the port and both sides of the cotton bag (arc-shaped pores should be avoided). 4.2 Standard environment for sample state adjustment and testing The standard environment for sample state adjustment and testing should comply with the provisions of GB/T2918. 4.3 Length and width
Measure according to the method specified in GB/T6673, and the graduation value of the steel tape is 1mm. The length and width deviations shall be taken as their maximum deviation values, accurate to 1mm.
4.4 Thickness
Measured according to the method specified in GB/T6672, accurate to 0.001mm. 4.5 Appearance
4.5.1 Visual inspection of color and appearance quality under natural light. 4.5.2 The size of the vent holes and the vent openings of the bag shall be measured with a ruler with a graduation value of 1mm. 4.6 Tensile strength and elongation at break
According to the method specified in GB/T1040.3-2006, 5 types of specimens are used, and the test speed is (500±50) mm/min. The arithmetic mean of the test results of the 5 specimens is taken as the test result, and 1 decimal place is retained. 4.7 Impact test
Carried out according to the A method in GB/T9639.1-2008, the number of samples is 10 pieces. 4.8 Heat resistance
Take three 120mm×120mm samples, overlap them and place them on a flat glass, apply a load of 9.8N on them, and then put them horizontally into a blast drying oven at (80±2)℃, keep them for 48h, then take them out, and then peel off the three layers of samples, and check whether there are any abnormalities such as adhesion and melting marks on the surface.
4.9 Cold resistance
The temperature of the low temperature test box is controlled at (-35±2)℃, take three 120mm×120mm samples and place them in the low temperature box for 5h, open the door of the box to keep the samples in a low temperature state, fold each sample and take it out for observation immediately, and the whole process from opening the door to folding and observation should exceed 10s.
4.10 The retention rate of elongation at break after artificial accelerated aging test is carried out according to the method specified in GB/T16422.2-1999: xenon arc lamp, 340nm relative spectral irradiance 0.5W/Cm2·nm), silicon glass inner and outer filter cover, black standard thermometer temperature (65±3)℃, box temperature 40℃, relative humidity (50±5)%, water spray cycle 18min, stop 102min, test time 800h continuous irradiation. After aging, the sample is tested for the retention rate of elongation at break according to the provisions of 4.6. 4.11 Friction coefficient
is carried out according to the method specified in GB/T10006.
Air permeability
is carried out according to the method specified in GB/T5453.
3 Heat seal strength
is carried out according to the provisions of QB/T2358.
5 Inspection rules
5.1 Batch
Products produced continuously with the same raw materials, formula, specification and process are considered a batch, and the quantity of each batch shall not exceed 200,000 pieces. 5.2 Sampling
5.2.1 Specifications and appearance shall be carried out in accordance with GB/T2828.1, using a secondary normal sampling plan, general inspection level II, and acceptance quality (AQL) of 6.5, see Table 3.
Table 3 Secondary normal sampling plan
Batch/thousand
91~150
151~280
281-500
Sample size/piece
Cumulative sample size/piece
Acceptance number Ac/piece
Rejection number Re/piece
GH/T1089—2013
5.2.2 Physical and mechanical properties Sampling is based on batches, and samples are cut from any package of a batch according to the requirements of 4.1 for testing. 5.3 Inspection classification
5.3.1 Factory inspection
The factory inspection items are 3.1, 3.2 in the technical requirements and Item 1, Item 2 and Item 3 in Table 2. 5.3.2 Type inspection
The type inspection items are all the items specified in Chapter 4, and the xenon arc lamp aging test shall be carried out at least once every two years. Type inspection is required in any of the following situations: a) When there are major changes in raw materials, formulas, and processes that may affect product performance; b) When the product is discontinued for more than one year and then resumed; when the factory inspection results are significantly different from the last type inspection; d) When the national quality supervision agency makes a request. 5.4 Judgment rules
5.4.1 Judgment of qualified items
5.4.1.1 The specifications and appearance inspection results shall be judged according to Table 3. 5.4.1.2 If there are unqualified items in the physical and mechanical properties test results, double samples should be taken from the original batch to re-test the unqualified items. 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, and physical and mechanical properties are all qualified according to the specified test results, the batch of products is judged to be qualified. 6 Marking, packaging, transportation, and storage
6.1 Marking
6.1.1 Blank marks that conform to the GB1103 mark content should be printed on both ends of the cotton bale bag. 6.1.2 The name, address, contact information, and usage tips of the cotton bale bag manufacturer should be printed on the cotton bale bag. 6.2 Packaging
The cotton bale bag packaging should be marked with: product name, specification, quantity, production batch number, product implementation standard number, enterprise name, factory address, etc.
6.3 Transportation
During loading and unloading of cotton bales, the outer packaging should be kept intact to prevent mechanical collision, sun exposure and rain. 6.4 Storage
Cotton bales should be stored away from heat sources in a dry, ventilated and clean warehouse.
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