GB/T 6543-2025 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 6543-2025 | English | 380 |
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Single and double corrugated boxes for transport packages
| Valid |
| GB/T 6543-2008 | English | 125 |
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Single and double corrugated boxes for transport packages
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| GB/T 6543-1986 | English | 479 |
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Corrugated box
| Obsolete |
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GB/T 6543-2025: Single and double corrugated boxes for transport packages---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT6543-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 55.160
CCS A 82
Replacing GB/T 6543-2008
Single and double corrugated boxes for transport packages
Issued on: MAY 30, 2025
Implemented on: DECEMBER 01, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 7
4 Classification... 7
5 Requirements... 8
6 Test methods... 10
7 Inspection rules... 13
8 Marks, packaging, transportation and storage... 14
Annex A (informative) Basic box type and box type code... 16
Annex B (informative) Accessory types and codes... 20
Annex C (informative) The relationship between the unfolded dimensions, outer
dimensions, and inner dimensions of the 0201 box... 22
Annex D (informative) Calculation method of compressive strength of empty
corrugated box... 25
Bibliography... 26
Single and double corrugated boxes for transport packages
1 Scope
This document provides classification of single and double corrugated boxes for
transport packages (hereinafter referred to as "corrugated boxes"). It specifies
requirements, inspection rules, marking, packaging, transportation and storage, and
describes test methods.
This document applies to the design, production and inspection of corrugated boxes
with a content mass not exceeding 55 kg.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 191, Packaging and storage marks
GB/T 462, Paper, board and pulps -- Determination of moisture content of analytical
sample
GB/T 2828.1-2012, Sampling procedures for inspection by attributes -- Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 4857.4, Packaging -- Basic tests for transport packages -- Part 4.
Compression and Stacking tests using a compression tester
GB/T 6544-2008, Corrugated fiberboard
GB/T 6545, Corrugated board. Determination of bursting strength
GB/T 6546, Corrugated fibreboard -- Determination of edgewise crush resistance
GB/T 6547, Corrugated fiberboard. Determination of thickness
GB/T 6548, Corrugated board -- Determination of adhesion
GB/T 10739, Paper, board and pulps -- Standard atmosphere for conditioning and
testing
GB/T 17497.3-2012, Decorative products by flexographic printing -- Part 3.
Corrugated board
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 corrugated fiberboard
A composite fiberboard consisting of one or more layers of corrugated paper bonded
between several layers of paper or fiberboard.
[Source. GB/T 6544-2008, 3.1.2, modified]
3.2 corrugated box
A box made of corrugated fiberboard (3.1) as the main material.
3.3 inside dimension of length plus width and depth
The sum of the length, width and height of the inner dimensions of the box.
[Source. GB/T 16717-2013, 3.1]
3.4 hole of box corner
Holes at the corners of a corrugated box (3.2) after it is formed.
3.5 prime section
The part of the printed image that reflects the theme.
3.6 subprime section
Any part of the printed image or text other than the prime section (3.5).
4 Classification
4.1 Types of corrugated boxes
Corrugated boxes are divided into 2 categories and 20 types based on the maximum
mass of the contents, the inside dimension of length plus width and depth, the
distribution environment, and the type of corrugated fiberboard used. See Table 1.The
performance of the corrugated fiberboard used in each type of corrugated box must not
be lower than the specified values in Table 1 of GB/T 6544-2008.Category 1 boxes are
primarily used in relatively harsh distribution environments, while Category 2 boxes
are primarily used in more favorable distribution environments.
4.2 Basic box type and code
The basic types and codes of corrugated boxes are listed in Annex A. Depending on the
contents, other types of corrugated boxes may be used. Corrugated boxes may contain
accessories such as partitions, padding, and bases. Their types and codes are listed in
Annex B.
5 Requirements
5.1 Appearance
5.1.1 The outer surface of the corrugated box should be smooth and free of obvious
defects such as dirt, scratches, and corner wrapping. The outer surface of the box should
not have obvious color differences within the same batch of boxes.
5.1.2 The content of printed labels on corrugated boxes should comply with the
requirements of the drawings confirmed by both the customer and the supplier, with
clear patterns and texts and no obvious color difference.
5.1.3 The nails on the corrugated boxes should be firmly nailed and fully nailed. There
should be no defects such as overlapping nails, warped nails, or poor corners.
5.1.4 There should be no defects such as glue overflow and glue see-through when
bonding corrugated fiberboard boxes.
5.2 Dimensions and deviations
The external dimensions of rigid rectangular corrugated boxes should comply with
GB/T 4892.The dimensional tolerances for length, width, and height should be ±3 mm
for single corrugated boxes and ±5 mm for double corrugated boxes. The unfolded
dimensions, internal dimensions, external dimensions, extension, and their
relationships for 0201 boxes are shown in Annex C. Other boxes may refer to this guide.
5.3 Squareness
For boxes with an inside dimension of length plus width and depth not exceeding 1000
mm, the difference between the lengths of the top and bottom diagonals should not
exceed 5 mm. For boxes with an inside dimension of length plus width and depth
exceeding 1000 mm, the difference should not exceed 8 mm.
5.4 Hole of box corner
When the box is stretched and formed, the maximum size of the hole of box corner of
the box should not be greater than 5 mm.
5.5 Nailing
When nailing, the spacing between nail lines should be no more than 80 mm for a single
nail and no more than 110 mm for a double nail. Nail along the centerline of the
overlapping portion, using diagonal nails (at approximately a 45° angle to the vertical
edge of the box) or horizontal nails. The distance between the top end of the head nail
and the centerline of the top indentation and the bottom end of the tail nail and the
centerline of the bottom indentation should be no more than 25 mm. The width of the
tongue edge of the nailed overlap of corrugated boxes should be no less than 30 mm for
single corrugated boxes and no less than 35 mm for double corrugated boxes.
5.6 Bonding
5.6.1 Overlapping tongue width
For single corrugated boxes, the width should not be less than 20 mm. For double
corrugated boxes, the width should not be less than 30 mm.
5.6.2 Bond strength
The bond strength is expressed as the peel rate. When tested according to the method
in 6.7, no less than 70% of the bonded surface should be damaged during peeling.
5.7 Fold-resistant swing cover
When tested according to method 6.8, the face paper should not have any cracks, and
the total length of the cracks in the lining paper should not be greater than 25% of the
flap length.
5.8 Properties of fiberboard after processing
After corrugated fiberboard is processed into corrugated boxes, its thickness and edge
6 Test methods
6.1 Appearance
Conduct visual inspection under natural light, at a distance of 1 m.
6.2 Dimensions and deviations
To measure the inside dimensions, stretch the box to form a square. After the two
adjacent non-overlapping surfaces form a right angle, measure the length and width at
the lap joint, 50 mm from the flap indentation. Measure the height as the distance
between the inner flaps at the bottom and top. To measure the unfolded dimensions,
unfold the box and fully flatten it. If it doesn't flatten, place a heavy object on top. After
flattening, measure the length and width between the two adjacent vertical indentations.
Measure the height as the distance between the upper and lower corresponding flap
indentations. To measure the outside dimensions, stretch the box to form a square. Fold
the inner and outer flaps inward, sealing the box. Measure the length and width at the
center of the top. Measure the height at the center of the box side, between the outer
flaps at the bottom and top.
Using a measuring tool with an accuracy of at least 1 mm, measure the length, width,
and height using the above method. Take the maximum deviation for each dimension,
accurate to 1 mm.
6.3 Squareness
Stretch the box so that adjacent, non-overlapping surfaces form right angles. Fold the
inner and outer flaps inward to seal the box. Measure the lengths of the top and bottom
diagonals using a measuring tool with an accuracy of at least 1mm. Calculate the
difference between the top and bottom diagonals. Take the maximum value, accurate to
the nearest 1 mm.
6.4 Hole of box corner
Stretch the box so that its two adjacent, non-overlapping surfaces form right angles.
Fold the inner and outer flaps inward to seal the box. Measure the maximum dimension
of the hole of box corner using a measuring tool with an accuracy of at least 1 mm. Take
the maximum value, accurate to the nearest 1 mm.
6.5 Nailing
Stretch the box to form it. Using a measuring tool with an accuracy of at least 1 mm,
measure the minimum distance between each pair of adjacent nails on the outer surface
of the nail joint. Take the maximum value of these results, accurate to 1 mm. Also, using
a measuring tool with an accuracy of at least 1 mm, measure the distance from the top
end of the head nail to the centerline of the top indentation and the distance from the
bottom end of the tail nail to the centerline of the bottom indentation, accurate to 1 mm.
6.6 Overlap tongue width
After disassembling the box along the joint, use a measuring tool with an accuracy of
at least 1 mm to measure the distance from the edge of the lap joint to the lap joint
pressure line. The minimum value is used as the lap joint width, accurate to 1 mm.
6.7 Bond strength
Use a knife to completely cut the bonded joint from the corrugated box. Peel the bond
vertically along the bond line. After peeling, calculate the bond peel rate.
6.8 Fold-resistant swing cover
After pre-treating the sample according to GB/T 10739, expand the box to form the
desired shape. Fold the flap inward 90°, then open and close it 180°. Repeat this cycle
three times. Visually inspect the front and back paper for cracks. If cracks are present
in the back paper, measure the length of all cracks with a measuring tool with an
accuracy of at least 1 mm. Sum the lengths of all cracks to the nearest 1 mm. Calculate
the percentage of the crack length to the total press line length.
6.9 Properties of processed corrugated fiberboard
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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