This standard specifies the dimensions, weight, packaging requirements, marking and inspection methods of cotton bales. This standard applies to cotton packaging and also to cotton linter packaging. GB/T 6975-2001 Cotton Packaging GB/T6975-2001 Standard download decompression password: www.bzxz.net
This standard specifies the dimensions, weight, packaging requirements, marking and inspection methods of cotton bales. This standard applies to cotton packaging and also to cotton linter packaging.

GB/T6975—2001
This standard adopts ISO8115:1986 "Cotton Bales - Size and Density" in a non-equivalent manner. The main technical differences are as follows: 1. The cotton bale density range is removed, and the cotton bale quality and quality deviation are added. 2. The cotton bale height range is removed, and the lower limit of the height is selected as the height of the first and second type cotton bales in my country. 3. The 800mmX400mm×600mm bale type is added. 4. In terms of standard content, the cotton bale wrapping cloth, binding materials, markings, inspection methods and other contents are added. This standard is a revision of GB/T6975-1986 "Cotton Packaging". The main revisions are as follows: 1. The 1400mm×530mm×700mm bale type is mentioned from the standard appendix to the standard text and is used as the I type cotton bale. 2. The 800mm×400mm×600mm cotton bale is changed from the original type 1 bale to the type I bale. 3. The three-dimensional diagram of cotton bale size marking has been removed, and the plane diagram of cotton bale shape, size and code have been added with reference to ISO8115:1986. 4. The diagram of the marking method of the six sides of the cotton bale has been removed. 5. The specifications of steel wire with diameters of 3.2mm and 4.0mm have been added. 6. The specifications of steel wire with diameters of 4.5mm have been removed.
7. Wrap cloth: No. 101 coarse plain cloth and No. 128 medium plain cloth have been removed. White pure cotton wrap cloth with Fu brand yarn has been adopted. 8. The inspection method has been added.
This standard will replace GB/T6975-1986 from the date of implementation. This standard is proposed by the All-China Federation of Supply and Marketing Cooperatives. This standard is under the jurisdiction of the Cotton and Linen Bureau of the All-China Federation of Supply and Marketing Cooperatives. The responsible drafting units of this standard are: China Cotton Industry Co., Ltd., Zhengzhou Cotton and Linen Engineering Technology Design Institute of the All-China Federation of Supply and Marketing Cooperatives; participating drafting units: Nantong Cotton Machinery Co., Ltd. The main drafters of this standard are Wang Yuchun, Wang Yi, Kang Yuguo, Yang Guizhi and Yu Yong. 7
1 Scope
National Standard of the People's Republic of China
Cotton baling
Cotton baling
This standard specifies the dimensions, weight, packaging requirements, marking and inspection methods of cotton bales. This standard applies to cotton packaging and also to cotton linter packaging. 2 Cited standards
GB/T6975—2001Www.bzxZ.net
Replaces GB/T6975-1986
neq IsO 8115:1986
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 are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T228—1987 Metal tensile test method GB1103—1999 Cotton fine linter
GB/T 4667--1995 Determination of width of woven fabrics GB/T4668--1995 Determination of density of woven fabrics SB/T10240--1994
3 Technical requirements
Test method of hydraulic cotton baler
3.1 After seed cotton is processed, the loose cotton fibers are compressed and packaged. 3.2 The shape and size code of the cotton bale are shown in Figure 1. Pressing direction
Compression direction
L—Bale length, W-Bale width, H-Bale height Figure 1
Approved by the State Administration of Quality and Technical Supervision on April 17, 2001 and implemented on June 1, 2001
GB/T 6975—2001
Bale dimensions, quality and quality deviation shall comply with the provisions of Table 1. 3.3
Bale model
3.4 ​​Bale cloth
3.4.1 Cotton bales shall be packed with pure white cloth made of branded yarn. 3.4.2 Specifications of cotton cloth: Width: 91.5cm
Count of warp and weft yarns: (-10)×(-10)*Warp and weft density: Warp yarns not less than 120/10cmWeft yarns not less than 120/10cm
3.5 Binding materials
Quality deviation
3.5.11. The molded bag shall be bound with high-carbon anti-corrosion galvanized steel wire with a diameter of 3.2mm or 4.0mm or with carbon steel strips and high-strength steel strips with a cross-section of 1mm×(19~20)mm(0.7~1)mm×(19～20)mm. It is allowed to use low-carbon galvanized steel wire with a diameter of 4.0mm for binding. The molded bag shall be bound with low-carbon galvanized steel wire with a diameter of 2.8mm. It is allowed to use low-carbon galvanized steel wire or high-carbon galvanized steel wire with a diameter of 2.5mm for binding.
The mechanical properties of the bundling materials are shown in Table 2.
Mechanical properties
Bundling materials
Galvanized steel wire
Carbon steel strip
High-strength steel strip
US, US
1mm×(19-20)mm
(cross section)
(0. 7-~1) mmX(19~20)mm
(cross section)
The number of bundled ropes shall comply with the requirements of Table 3.
Low carbon steel wire (diameter)
Tensile strength
1400~~1650
400~510
>390590
>590780
Number of roots
High magnetic steel wire (diameter)
2.5mm2.8mm
4.0mm2.5mm|3.2mm
10--12/1011
10～11
Carbon steel strip (section)
1 mmX(19~~20)mm
Elongation
High strength steel strip (cut surface)
(0.7~1)mm ×(19~-20)mm
GB/T6975—2001
3.6 After the cotton bale is tied, the seams should be tightly sewn with pure cotton rope, and the stitch length should not exceed 25mm. Other packaging methods (such as sleeve method and bag method) shall not have cotton exposure, damage or pollution.
3.7 The ropes of the cotton bale should be arranged evenly and parallel to each other, and the rope knots should be firm and reliable. The double loop knot method is usually used for steel wire knotting. The mother-child knot method is usually used for steel belt knotting. 3.8 Marking
3.8.1 The content of the cotton bale marking includes: cotton origin (province, autonomous region, municipality and county), cotton processing unit, cotton quality mark, batch number, bale number, cotton bale quality (gross weight), and production date. 3.8.2 The cotton quality mark shall comply with the provisions of 9.3.1 of GB1103-1999. 3.8.3 The cotton quality label shall be consistent with the internal quality of the cotton bale. 4 Inspection methods
4.1 The external dimensions and quality of the cotton bale shall be inspected in accordance with 6.3 and 6.4 of SB/T10240-1994. 4.2 Mechanical properties of the strapping material
4.2.1 Tensile strength: in accordance with 8.8 of GB/T228-1987. 4.2.2 Elongation: in accordance with 8.1 of GB/T228-1987. 4.3 Cloth measurement
4.3.1 Cloth width: in accordance with GB/T4667. 4.3.2 Warp and weft density of the cloth: in accordance with GB/T4668.
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