CN2631965Y - Composite packing board with environmental protection paper - Google Patents

Abstract

An environmentally friendly paper composite packaging board, comprising an upper board (1), a lower board (2) and a cardboard (3) between the two, the upper board (1) and the lower board (2) using cardboard are respectively connected with the A layer of bonding glue (4) is coated on the combined inner surfaces of the cardboards (3), and a layer of kraft paper (5) is coated on the outer surfaces of the upper board (1) and the lower board (2). Since the inner surfaces of the upper plate (1) and the lower plate (2) are fully coated with a layer of bonding glue (4), so the gap between the upper plate (1), the lower plate (2) and the cardboard (3) The bonding strength is strong enough to prevent degumming and cracking. In addition, the bonding glue layer (4) forms a solid supporting layer after being cured, effectively improving the pressure bearing capacity of the upper plate (1) and the lower plate (2). The outermost kraft paper (5) can play a waterproof role and can effectively improve the overall pressure bearing capacity.

Description

Environmentally friendly paper composite packaging board

Technical Field The utility model relates to packaging materials, in particular to cardboard packaging boards used for packaging large items.

Background technology In the prior art, paper packaging boards for bulky items generally use composite packaging boards with a honeycomb paper core structure sandwiched between two cardboards, and paper corners are used to reinforce the packaging boards at the corners. In the production process of this kind of packaging board, glue is applied to the end of the paper core and combined with the cardboard. During use, due to its weak bonding strength, it often causes degumming and cracking. Therefore, the packaging board of this structure bears Insufficient pressure capacity causes damage to articles; and its manufacturing process is complicated and wastes materials.

SUMMARY OF THE INVENTION The utility model provides an environmentally friendly paper composite packaging board, which aims to solve the shortcomings of the existing technology and improve the pressure bearing capacity of the packaging board.

The utility model achieves the purpose of the invention by implementing the following technical solutions: making an environmentally friendly paper composite packaging board, including an upper board, a lower board, and a vertically placed paper core between the two; the upper board using a cardboard 1. The inner surface of the lower board is coated with a layer of adhesive glue layer to be combined with the paper core respectively, and the outer surfaces of the upper board and the lower board are covered with a layer of kraft paper. Since the inner surfaces of the upper board and the lower board are fully coated with a layer of adhesive glue, the bonding strength between the upper board, the lower board and the paper core is strong enough to prevent degumming and cracking. In addition, the adhesive layer forms a solid support layer after curing, which effectively improves the pressure bearing capacity of the upper and lower plates, and enhances the strength of the entire packaging plate.

Because the utility model adopts the above technical scheme, it has the characteristics of firm bonding without cracking, greatly improved pressure bearing capacity, simple manufacturing process and material saving.

Description of drawings

Fig. 1 is a schematic cross-sectional front view of an environmentally friendly paper composite packaging board of the present invention.

Fig. 2 is a schematic diagram of unfolding of the whole paper jam in the utility model.

Fig. 3 is a schematic diagram of unfolding of the entire kraft paper 5 in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

It can be seen from Fig. 1 that an environmentally friendly paper composite packaging board includes an upper board 1, a lower board 2 and a paper core 3 between them; A layer of adhesive glue layer 4 is coated on the surface to bond with the paper core 3 respectively, and a layer of kraft paper 5 is adhered on the outer surfaces of the upper board 1 and the lower board 2 . Since the inner surfaces of the upper plate 1 and the lower plate 2 are fully coated with a layer of adhesive glue layer 4, the bonding strength between the upper plate 1, the lower plate 2 and the paper core 3 is strong enough to prevent degumming cracking phenomenon. In addition, the adhesive layer 4 forms a solid support layer after curing, which effectively improves the pressure bearing capacity of the upper plate 1 and the lower plate 2, and enhances the strength of the entire packaging plate. The kraft paper 5 wrapped on the outermost surface can play a role of waterproofing to a certain extent, and can also play the role of integrating the various components of the above-mentioned packaging board into one body, which can effectively improve the overall pressure bearing capacity.

As can be seen from Fig. 1, a layer of cardboard 6 surrounds the upper plate 1 and the lower plate 2, and the cardboard 6 is bonded to the upper plate 1 and the lower plate 2 respectively, and the cardboard 6 is bonded to the paper core 3 The combined inner surface is coated with a layer of adhesive glue layer 4, and the outer surface of the cardboard 6 is covered with a layer of kraft paper 5. Cardboard 6 is added to the side of the packaging board, on the one hand, it can protect the side of the packaging board to withstand impact and keep it clean; on the other hand, it can effectively support the upper board 1 and the lower board 2 .

According to different loading conditions and user requirements, the paper core 3 is a honeycomb paper core or a corrugated paper core, and the corrugated paper core is bonded into one body with multiple layers. The cardboard 6 can be selected from kraft cardboard, gray cardboard or corrugated paper.

As can be seen from FIG. 1 , the cardboard 6 is embedded between the upper plate 1 and the lower plate 2 , and its upper and lower end surfaces are bonded to the inner surfaces of the upper plate 1 and the lower plate 2 respectively. Such a structural design can further strengthen the support for the upper plate 1 and the lower plate 2, and further improve the overall pressure bearing capacity.

As can be seen from Figures 2 and 3, the cardboard 6, the upper board 1 and the lower board 2 are cut from a whole piece of cardboard, and the inner surface is coated with an adhesive layer 4 to cover the outside of the paper core 3. An integral packaging board is formed; the kraft paper 5 is cut and formed as a whole and wrapped on the outside of the hard cardboard. The way of cutting and forming the whole sheet can make the connection between the boards better and the pressure bearing capacity stronger.

As can be seen from Fig. 2 and Fig. 3, the paperboard 61 of the margin is left at the side corner of the cardboard packaging board in the cardboard of the whole sheet of hard cutting; There is a margin of paper 51 at the corner of the side wrapping. During the manufacturing process, the paper ends 61 and 51 are wrapped around the corners of the packaging board, so that no gaps are left in the corners, and the performance of anti-corrosion and anti-rot is better.

According to the weight of the specific loaded items and the requirements of the user, the upper plate 1 or the lower plate 2 is made of at least two layers of multi-layer cardboard bonded together; it can also be made of cardboard of different quality from 400 to 1200G. Upper plate 1 or lower plate 2.

Claims (10)

1. A kind of environment-friendly paper composite packaging board, comprises upper board (1), lower board (2) and the vertically placed paper core (3) between the two, it is characterized in that: the described upper board that adopts cardboard core The inner surfaces of the board (1) and the lower board (2) are all coated with a layer of adhesive layer (4) to be bonded with the paper core (3) respectively, and the outer surfaces of the upper board (1) and the lower board (2) are A layer of kraft paper (5) is glued and covered on the surface. 2. The environmentally friendly paper composite packaging board according to claim 1, characterized in that: the upper board (1) and the lower board (2) are surrounded by a layer of cardboard (6), and the cardboard (6) is respectively Bonded with the upper board (1) and the lower board (2), the inner surface of the cardboard (6) combined with the paper core (3) is coated with a layer of adhesive glue (4), the cardboard (6) ) is covered with a layer of kraft paper (5) on its outer surface. 3. The environmentally friendly paper composite packaging board according to claim 1, characterized in that: the paper core (3) is a honeycomb paper core or a corrugated paper core, and the corrugated paper core is bonded into one body with multiple layers. 4. The environmentally-friendly paper composite packaging board according to claim 2, characterized in that: the cardboard (6) is constructed of kraft cardboard, gray cardboard or corrugated paper. 5. The environmentally-friendly paper composite packaging board according to claim 2, characterized in that: the cardboard (6) is embedded between the upper board (1) and the lower board (2), and its upper and lower end surfaces are respectively connected to the The inner surfaces of the upper plate (1) and the lower plate (2) are bonded. 6. The environmentally friendly paper composite packaging board according to claim 2, characterized in that: the cardboard (6), the upper board (1) and the lower board (2) are formed by cutting a whole piece of cardboard, and the inner surface Coating adhesive glue layer (4), wrapping the outside of paper core (3) forms an integral packaging board. 7. The environmentally-friendly paper composite packaging board according to claim 1, characterized in that: the kraft paper (5) is cut and formed as a whole and wrapped on the outside of the hard cardboard. 8. The environmentally-friendly paper composite packaging board according to claim 6, characterized in that: the whole piece of hard-cut cardboard has a surplus paper head (61) at the corners of the side of the cardboard packaging board. 9. The environmentally-friendly paper composite packaging board according to claim 7, characterized in that: the kraft paper (5) leaves a surplus paper head (51) at the corners of the sides of the cardboard packaging board. 10. The environmentally friendly paper composite packaging board according to claim 1, characterized in that: the upper board (1) or the lower board (2) is made of at least two layers of multi-layer cardboard bonded together.

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