CN203237499U - Heavy corrugated case - Google Patents

Abstract

The utility model relates to a heavy corrugated case. The heavy corrugated case mainly solves the problem that heavy objects can easily crack when being packaged in the prior corrugated cases. The heavy corrugated case is characterized in that a case bottom is integrated with the front surface, the rear surface, the left surface and the right surface, and four transverse pressing lines and four longitudinal pressing lines at the bottom are in the shapes of circular arcs; buffering layers are arranged on four corners of the inner side of the bottom of the case; PP layers adhere to the inner wall of the case body and the inner wall of a case cover. The buffering layers on the four corners of the inner side of the bottom and the PP layers adhering to the inner walls greatly increase strength of the corrugated case body, and therefore the heavy objects can not easily crack when being packaged in the heavy corrugated case.

Description

heavy corrugated box

technical field

The utility model relates to the technical field of packaging, in particular to a heavy corrugated box.

Background technique

Cartons are widely used in daily life and industrial production. In order to improve the mechanical strength of cartons, people have carried out long-term exploration and proposed various solutions. For example, some people use paper with higher strength or thicker thickness as raw material. Obviously, this solution has the disadvantage of high cost.

Corrugated paper is a plate made of liner paper and corrugated corrugations formed by processing corrugated sticks. It is generally divided into two types: single corrugated cardboard and double corrugated cardboard. It is pressed into a corrugated shape during the production process. After being made into corrugated cardboard, it will provide cardboard elasticity, parallel strength, and affect the vertical compressive strength and other properties. For corrugated paper, the surface of the paper should be flat, the thickness should be consistent, and there should be no paper defects such as wrinkles, cracks, and holes, otherwise it will increase the number of broken ends in the production process and affect product quality. Corrugated cardboard is die-cut, creased, nailed or glued to make corrugated boxes. Corrugated carton is the most widely used packaging product, and its consumption has always been the first among all kinds of packaging products.

When corrugated boxes pack heavy objects, they often break because the box cannot bear the weight.

Utility model content

In order to overcome the deficiency of the background technology, the utility model provides a heavy-duty corrugated box, which mainly solves the problem that the existing corrugated box is easy to break when packing heavy objects.

The technical solution adopted by the utility model is: a heavy corrugated box, including a box body, a box cover and a box bottom. It is integrated with the front, rear, left and right sides, and the four horizontal pressure lines on the bottom and the four vertical pressure lines on the side are arc-shaped; the four inner corners of the bottom of the box are provided with buffer layers ; The PP layer is attached to the inner wall of the box body and the box cover.

The buffer layer is made of polystyrene.

The buffer layer has two right-angled sides, and the right-angled sides are adjacent to two sides of the box respectively.

The box cover is bonded with the box bodies on the front, back, left and right sides by glue.

The box body and box bottom are 5-layer or 7-layer corrugated cardboard.

The beneficial effects of the utility model are: due to the adoption of the above-mentioned technical scheme, the buffer layer at the four corners inside the bottom and the PP layer attached to the inner wall greatly increase the strength of the corrugated box, making it less likely to occur when packing heavy objects. rupture.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a half sectional view of the utility model.

In the figure, 1-box body, 2-box cover, 3-box bottom, 4-horizontal pressure line, 5-longitudinal pressure line, 6-buffer layer, 7-PP layer.

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is further described:

As shown in Figure 1 in combination with Figure 2, a heavy corrugated box includes a box body 1, a box cover 2, and a box bottom 3. The box body 1 is square and includes front, rear, left, right, and four sides. The bottom of the box 3 is integrated with the front, rear, left and right sides, and the four horizontal pressure lines 4 on the bottom and the four vertical pressure lines 5 on the side are arc-shaped; the four inside the bottom of the box body 1 A buffer layer 6 is provided at each corner; a PP layer 7 is attached to the inner wall of the box body 1 and the box cover 2 . The box bottom 3 is integrated with the box body 1 to avoid cracking and falling off under the action of heavy objects after glue bonding or binding, and the four horizontal pressure lines 4 and the four vertical pressure lines 5 are arc-shaped , greatly reducing the phenomenon of stress concentration, with the buffer layer 6 provided at the four corners and the PP layer 7 attached to the inner wall, the strength of the corrugated box is greatly increased, so that it is not easy to break when packing heavy objects.

The buffer layer 6 is made of polystyrene. The cushioning layer 6 made of polystyrene has a better cushioning effect and is very economical.

The buffer layer 6 has two right-angled sides, and the said right-angled sides are adjacent to two sides of the box body 1 respectively. After inspection, the buffering effect of this buffer layer 6 is the best.

The box cover 2 is bonded with the box body 1 on the front, back, left and right sides by glue. Because there is no heavy object between the case cover 2 and the case body 1, it is convenient and economical to adopt glue bonding.

The box body 1 and box bottom 3 are 5-layer or 7-layer corrugated cardboard. The corrugated box has been further strengthened to support heavier items.

Notes to all technical personnel: Although the utility model has been described according to the above-mentioned specific embodiments, the inventive idea of the utility model is not limited to this utility model, and any modification using the inventive idea will be included in the protection scope of the patent right Inside.

Claims (5)

1. A heavy-duty corrugated box, including a box body (1), a box cover (2) and a box bottom (3), the box body (1) is square, including front, back, left, right, and four sides, It is characterized in that: the bottom of the box (3) is integrated with the front, rear, left and right sides, and the four horizontal pressure lines (4) on the bottom and the four vertical pressure lines (5) on the side are arc-shaped ; The four inner corners of the bottom of the box (1) are provided with a buffer layer (6); the inner walls of the box (1) and the box cover (2) are attached with a PP layer (7). the 2. The heavy-duty corrugated box according to claim 1, characterized in that: the buffer layer (6) is made of polystyrene. the 3. The heavy-duty corrugated box according to claim 1 or 2, characterized in that: the buffer layer (6) has two right-angle sides, and the two sides of the box body (1) respectively Lean on. the 4. The heavy-duty corrugated cardboard box according to claim 1, characterized in that: the box cover (2) is bonded to the box body (1) on the front, back, left and right sides by glue. the 5. The heavy-duty corrugated cardboard box according to claim 1, characterized in that: the box body (1) and box bottom (3) are made of 5-layer or 7-layer corrugated cardboard. the

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