GB/T 6544-2008Corrugated fiberboard (English PDF)

Foreword

This standard replaces GB/T 6544-1999 "Corrugated fiberboard", GB/T 16718-1996 "Packing material - Heavy duty corrugated fiberboard" and GB/T 5034-1985 "Corrugated fiberboard for packaging of export product". This standard is a revision of GB/T 6544-1999, GB/T 16718-1996 and GB/T 5034-1985. The above three standards are integrated in the revision process.

As compared with GB/T 6544-1999, GB/T 16718-1996 and GB/T 5034-1985, the main changes of this standard are as follows.

- USE the normative reference instead of reference standards. DELETE

GB/T 6548 "Determination of ply adhesive strength for corrugated fiberboard". DELETE GB/T 4857.2-1992 "Packaging - Transport packages - Temperature and humidity conditioning". DELETE GB/T 16717-1996 "Packing containers - Heavy duty corrugated box" (clause 2 of the 1999 version; clause 2 of the 1996 version; clause 2 of this version);

- ADD the definition and code of fluted paper, triple-wall corrugated fiberboard. ADD the definition of minimum combined weight of facings including center facings of double-wall and triple-wall board. MODIFY the English expression of single-wall corrugated fiberboard and double-wall corrugated fiberboard. DELETE the definition and code of the heavy-duty corrugated fiberboard, composite corrugated fiberboard, tetra-wall, double-wall, six-wall, triple-wall composite/heavy-duty corrugated fiberboard (clause 3 of the 1999 version; clause 3 of the 1996 version; clause 1 of the 1985 version; clause 3 of this version);

- ADD the structure and classification of corrugated fiberboard (clause 4 of the 1999 version; clause 1 of the 1985 version; clause 4 and Appendix A of this version);

- ADD (MODIFY) the type of corrugated fiberboard. MODIFY the requirements for the index (Table 1 of clause 4 of the 1999 version; clause 5 of the 1996 version; clause 2 of the 1985 version; Table 1 of clause 4 of this version);

- ADD the structure and symbolic representation of the corrugation type of the corrugated fiberboard, both the number of corrugations and the width index of corrugation (Table 2 in clause 4 of the 1999 version; clause 5 of the 1996 version; clause 2 of the 1985 version; Figure 1 and Table 2 of this version);

- MODIFY the requirements for the ply adhesive strength of corrugated fiberboard (clause 5 of the 1999 version; clause 2 of the 1985 version; clause 5 of this version);

- MODIFY the appearance requirements of corrugated fiberboard (clause 5 of the 1999 version; clause 5 of the 1996 version; clause 2 of the 1985 version; clause 5 of this version);

- MODIFY the test method for ply adhesive strength (clause 6 of the 1999 version; clause 2 of the 1985 version; clause 6 and Appendix B of this version);

- ADD the test method for maximum warpage (clause 6 of the 1999 version; clause 2 of the 1985 version; clause 6 of this version);

- MODIFY the provisions on the handover inspection plan and acceptability (clause 7 of the 1999 version; clause 7 of the 1996 version; clause 3 of the 1985 version; clause 7 of this version).

Appendix A and Appendix B of this standard are normative appendixes.

1 Scope

This standard specifies the terms, definitions and codes, structures, classifications and grading, technical requirements, test methods, inspection rules and marking, packaging, transport and storage of corrugated fiberboard.

This standard applies to corrugated fiberboard for outer packaging.

2 Normative references

The provisions in following documents become the provisions of this standard through reference in this standard. For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this standard; however, parties who reach an agreement based on this standard are encouraged to study if the latest versions of these documents are applicable.

For undated references, the latest edition of the referenced document applies.

GB/T 450 Paper and board - Sampling for testing (GB/T 450-2002, eqv ISO 186:1994)

GB/T 462 Paper and board - Determination of moisture content (GB/T 462-2003, ISO 287:1985, MOD)

GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1:

Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (GB/T 2828.1-2003, ISO 2859-1:1999, IDT)

GB/T 6545 Corrugated fiberboard - Determination of bursting strength (GB/T 6545-1998, eqv ISO 2759:1983)

GB/T 6546 Corrugated fiberboard - Determination of edgewise crush resistance (GB/T 6546-1998, idt ISO 3070:1987)

3 Terms, definitions and codes

4 Structure, classification and grading

5 Technical requirements

6 Test methods

6.1 The thickness shall be measured in accordance with the provisions of GB/T 6547.

6.2 The length and width are measured by a steel tape measure or ruler which is accurate to 1 mm.

6.5 Ply adhesive strength shall be as specified in Appendix B.

6.6 The moisture of the corrugated fiberboard as delivered is in accordance with the provisions of GB/T 462.

6.7 The appearance quality of corrugated fiberboard shall be assessed by visual inspection. The test of maximum warpage shall be carried out after horizontal placement of corrugated fiberboard without external force, the distance from the highest point to the horizontal plane is taken as the measured value.

7 Inspection rules

7.1 The quantity of products as delivered for one time forms a batch, the unit of product is piece.

7.5 The purchaser has the right to carry out inspection according to this standard. If there is any objection to the quality of the batch, the supplier shall be notified to re-inspect it within one month after the arrival of the goods.

8 Marking, packaging, transport, storage

8.1 The packaging and marking of the product shall be in accordance with the requirements of GB/T 10342 or agreed between the supplier and the purchaser.

8.2 During transport, it shall use the rain-proof, moisture-proof and clean transport tools with awning.

8.4 The storage period of the product after exit-factory shall generally not exceed six months. […]