Foreword

This standard refers to Japanese Industrial Standard Z1516-1997 "Corrugated Cardboard for Packaging" and German Standard DIN 55468-1987 "Corrugated Cardboard for Packaging Materials", in which the burst strength index is JIS Z1516-1997 and the edge pressure strength index is DIN 55468-1987. This standard is the first revision of GB/T6544-1986 "Corrugated cardboard".
This standard is prepared in accordance with GB/T1.3-1997 "Standardization Work Guide, Part 1: Drafting of the Standards and Part 3 of the Rules: Preparation of Product Standards."
This standard replaces GB/T6544-1986 "Corrugated cardboard" from the date of implementation.
This standard was proposed by the State Light Industry Bureau.
This standard is under the jurisdiction of the National Paper Industry Standardization Technical Committee.
This standard is drafted by: China Pulp and Paper Industry Research Institute; participated in the drafting: Changzhou Changfeng Packaging Co., Ltd., China Export Commodity Packaging Research Institute, Chongqing Huaya Paper Co., Ltd.
The main drafters of this standard: Li Lanfen, Chen Hao, Zhang Shaoling, Zhang Jianlan.

The People's Republic of China national standard packaging materials corrugated paper GB/T6544-1999
Replace GB/T6544-1986 Packign material-Corrugated fibreboard

1 Scope This standard specifies the definition of corrugated board, code, product classification, technical requirements, test methods, inspection rules and signs, packaging, transportation and storage.
This standard applies to corrugated cardboard for packaging.
2 Citation Criteria The clauses included in the following standards are incorporated into this standard and constitute the provisions of this standard. At the time of publication, the editions indicated were valid. All standards will be revised and all parties using this standard should explore the possibility of using the latest version of the following standards.
GB/T450-1989 Adoption of paper and cardboard samples (equISO186:1985)
GB/T462-1989 Determination of moisture in paper and board (equISO287:1978)
GB/T2828-1987 inspection count sampling procedures and sampling tables (applicable to continuous batch inspections)
Determination of burst strength of GB/T6545-1998 corrugated board (equISO2759:1983)
GB/T6546-1998 Determination of edge-to-side strength of corrugated board (itd IS03070:1987)
GB/T6547-1998 Determination of the thickness of corrugated board (itd ISO3040; 1991)
GB/T6548-1998 Determination of adhesive strength of corrugated board (equJIS Z0402:1988)
GB/T10342-1989 Paper Packaging and Marking (neq OCT1641:1975)
GB/T10739-1989 Standard atmospheres for the treatment and testing of pulp, paper and paperboard specimens (equ IS0 187:1984)
Corrugated paper (neqJISP3904:1985) GB/T13023-1991
GB/T13024-1991 cardboard (neqJISP3902:1985)
3 Definitions and Codes
3.1 Definitions This standard uses the following definitions.
3.1.1 corrugated fiberboard
A composite board made of cardboard and corrugated corrugated paper that is used to make corrugated boxes.
3.1.2 Single wall corrugated fiberboard
2. Corrugated cardboard made by bonding two layers of corrugated board and a layer of corrugated corrugated paper.
3.1.3 double wall corrugatde fiberboard
A corrugated cardboard made of two layers of cardboard, two corrugated corrugated base papers and a corrugated core paper.
3.2 Codes for coded corrugated cardboard are as follows:
S1.1-S1.4 are the first 1-4 kinds of double-sided single corrugated cardboard of superior products.
S2.1-S2.4 are the first 1-4 kinds of double-sided single corrugated cardboard of first-class products.
S3.1-S3.4 are respectively the first 1-4 kinds of double-sided single corrugated cardboard of the qualified product.
D1.1-D2.4 are the first 1-4 kinds of double-corrugated cardboard with excellent quality.
D2.1-D2.4 are the first 1-4 kinds of double-corrugated double-corrugated cardboard.
D3.1-D3.4 are the first 1-4 kinds of double-corrugated cardboard with a good quality.
4 Product Category
4.1 Classification According to physical strength, single and double corrugated cardboard are divided into 4 types (see Table 1). According to the purpose and quality of raw materials, each corrugated board is divided into superior products, first-class products and qualified products. Among them, premium products are corrugated cardboard for export goods and valuables; first grade products are corrugated cardboard for domestic sales, and qualified products are corrugated cardboard for short-distance, low-cost packaging.
Table 1

Type superior products First-class products Qualified product code Burst degree Side pressure strength code Rupture degree Side pressure strength code Rupture degree Side pressure strength Single corrugated cardboard S-1.1
S-1.2
S-1.3
S-1.4 638
785
1177
1570 4.5
5.0
6.0
7.0 S-2.1
S-2.2
S-2.3
S-2.4 410
686
980
1373 4.0
4.5
5.0
6.0 S-3.1
S-3.2
S-3.3
S-3.4 392
588
784
1177 3.5
4.0
4.5
5.0 double corrugated cardboard D-1.1
D-1.2
D-1.3
D-1.4 785
1177
1570
1960 6.5
7.0
8.0
9.0 D-2.1
D-2.2
D-2.3
D-2.4 686
980
1373
1765 6.0
6.5
7.5
8.0 D-3.1
D-3.2
D-3.3
D-3.4 588
784
1177
1570 5.5
6.0
6.5
7.0

4.2 楞-type structure and its size
4.2.1 The corrugated structure and size requirements of corrugated board should meet the requirements of Table 2. The corrugated shape is UV type.
Table 2

楞 type 楞 high, mm 楞 number, one/300mm A 4.5-5.0 34±2 C 3.5-4.0 28±2 B 2.5-3.0 50±2 E 1.1-2.0 96±4

4.2.2 Corrugated board thickness: The thickness of a single corrugated board shall be higher than the lower limit of the corresponding height specified in Table 2. The thickness of the double corrugated cardboard should be higher than the sum of the corresponding two lower values ​​of the enthalpy height specified in Table 2.
4.2.3 The width and length of the corrugated board shall be determined through negotiation between the supply and demand sides.
5 Technical requirements
5.1 Materials
5.1.1 Boxboards shall comply with the provisions of G/T 13024.
5.1.2 Corrugated (or core) paper shall comply with the provisions of G/T 13023.
5.1.3 use starch adhesives or other equivalent adhesives.
5.2 Corrugated cardboard
5.2.1 The technical indicators of corrugated board shall not be less than the requirements in Table 1.
5.2.2 The adhesive strength of corrugated board should not be lower than 588N/m.
5.2.3 The delivery moisture (in line moisture) of corrugated board is (14 ± 2)%.
5.2.4 Appearance of corrugated cardboard: The surface should be smooth and clean. No material or thin edges are allowed. The trimming edges should be neat and firmly bonded. The sum of the degumming parts should not exceed 20 cm2 per square meter.
6 Test methods
6.1 The sample taken and processed according to the provisions of GB/T450 and GB/T10739.
6.2 Determination of thickness according to GB/T 6547 regulations.
6.3 Length and width dimensions are measured with a 1mm precision steel tape or ruler.
6.4 side pressure strength according to the provisions of GB/T 6546.
6.5 burst strength according to the provisions of GB/T 6545.
6.6 Adhesion strength According to the provisions of GB/T 6548.
6.7 The moisture content of the corrugated board can be measured with a quick moisture meter or according to GB/T462

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