Section 1 Visual Inspection of Corrugated Boxes

First, classification

According to the maximum internal size, the maximum quality of the contents and the type of corrugated board, the corrugated boxes are divided into eight types (see Table 22).

Table 22

Type Contents Maximum Weight (kg) Maximum Overall Size (mm) Single

watt

楞

Box 1

The second kind

The third kind

The fourth kind 10

20

30

40 1000

1400

1450

2000 double

watt

楞

Box 1

The second kind

The third kind

The fourth kind 20

30

40

50 1400

1750

2000

2500

Note: When the maximum internal size and the maximum mass of the tiled carton are not the same type, the higher one should be selected.

Second, test items and technical requirements

The appearance inspection items are stipulated as eleven. Among them, eight are light defects and three are heavy defects. The items with light defects are: marking, printing, indentation lines, Knife edges, box nails, bonding, twisting, and rolling cover folding; the items of heavy defects are inner size, thickness, and moisture content (see Table 23).

Table twenty-three

Project Technical Requirements Remarks Mark According to the provisions of GB 191, the code specified by the commodity inspection department shall be printed on the carton, and the code shall be printed on the surface of the printing box. The text shall be clear and correct, the depth shall be the same, and the position shall be indented. The indentation line width shall be: the single corrugated box shall not be larger than 12mm; The double corrugated carton shall not be larger than 17mm and the fold line shall be centered. There shall be no defects such as splits, broken lines, heavy threads, etc. There shall be no extra indentation line on the box. No incision may be made at the edge of the knife edge. The edge distance of the paper in the incision of the cutter shall not exceed 8mm or The length shall not exceed 12mm, and the hole diameter of the stacking corner shall not exceed 5mm after the box is used. Box nails shall be coated with low-carbon flat steel with coating, and shall not have rust, peeling, cracking or other defects in use. Evenly spaced, single nail distance is not more than 55mm, double nail distance is not more than 75mm. The distance from the end to the end of the indentation line is 13±7mm. Nailed joints shall be nailed and nailed thoroughly. No stacking nails, dowels, or nails shall be allowed. Spacing of the distance between the two nails shall be the distance between the two nails and the width of the staple joints. The width of the joint shall be 35-50 mm. The box nails should be stapled along the midline of the lap joints. The arrangement should be neat and the skew should not exceed 5mm. The adhesive lap width is not less than 30mm, the adhesive should be coated uniformly, fully, without spillage, and the release paper should not be separated when the adhesive surface is peeled off. Carton two pieces of joints aligned, the Scissors; large box is not greater than 7mm; medium box is not more than 6mm; small box is not greater than 4mm, box square scissors: measure the difference between the distance between the upper and lower ends of the indentation line at the joint Box paper is not allowed to splicing, lack of material, dew, wrinkle, glue, stains. The paper splice inside the box shall not exceed two stitches. The indentation line at the stitching head shall not be less than 30mm from the cover; the degumming surface shall be no more than 20cm2 per square meter; the large box shall not be skewed by more than 3, and the medium and small boxes shall not be skewed by more than 2 Adhesives are starch adhesives or other equivalent adhesives. Sodium silicate must not be used. The degumming area refers to the unbonded or false-bonded part of the board. The roll-folding box is supported or typed, and the swing cover is opened and closed 270 degrees, and reciprocated three times. The front paper and the inner paper have no cracks.

Box

The large, medium and small cartons are supported and shaped. The angle between adjacent surfaces is 90°. The box length and the box width are measured on the lap joint tongue at a distance of 50 mm from the box mouth with the inner diameter ruler; the distance between the bottom and the top of the box is measured. Take the box high long, wide, high single limit deviation mm +5

-3 +4

-3 +3

-2 Thickness Single corrugated board board Double corrugated box board thickness refers to the distance between corrugated board upper and lower plates. It is measured according to GB6547. A ≥ 4.5 AA ≥ 9.0 C ≥ 3.5 AC ≥ 8.0 B ≥ 2.5 CB ≥ 6.0 E ≥ 1.1 CC ≥ 7.0 AB ≥ 7.0

Moisture content corrugated box moisture content should be 12% ± 4% using rapid moisture measurement or oven test

Note: The integrated dimensions of large, medium and small are respectively greater than or equal to 2000mm, less than 2000mm and greater than 1000mm and less than or equal to 1000mm.

Third, the inspection method

According to the technical requirements in the appearance inspection project, the inspection shall be carried out one by one and must be stipulated in the regulations. The tester used in the inspection includes: steel tape measure, inner diameter ruler, wooden ruler, ruler, special sampler (Figure 24) and cutting paper cutter.

The following is a brief description of the inspection of the corrugated box's inner diameter, inspection of the moisture content, and inspection of the corrugated board thickness.

Inner diameter size