CN213767472U

CN213767472U - 7-layer composite corrugated board

Info

Publication number: CN213767472U
Application number: CN202022679345.8U
Authority: CN
Inventors: 徐汉华
Original assignee: Hangzhou Xiaoshan Lianfa Packaging Co ltd
Current assignee: Hangzhou Xiaoshan Lianfa Packaging Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-23
Anticipated expiration: 2030-11-18

Abstract

The utility model provides a 7 layer composite corrugated board includes at least: the composite corrugated board comprises a first outer paperboard layer, a first reinforcing layer, a first corrugated core paper layer, a dehumidification moisture-proof layer, a second corrugated core paper layer, a second reinforcing layer and a second outer paperboard layer which are sequentially arranged from top to bottom, wherein drying agents are arranged at intervals in the dehumidification moisture-proof layer, the first outer paperboard layer and the second outer paperboard layer are made of waterproof materials, and the 7-layer composite corrugated board can absorb moisture and reduce the phenomenon of paperboard moisture regain as much as possible; meanwhile, the mechanical structure of the 7-layer composite corrugated board is also optimized.

Description

7-layer composite corrugated board

Technical Field

The utility model relates to a corrugated container board field, in particular to 7 layers of compound corrugated container board that humidity resistance is good.

Background

Corrugated board, also called corrugated board, is formed by bonding at least one layer of corrugated paper and one layer of cardboard paper, and is mainly used for manufacturing paper boxes, sandwich of the paper boxes and other packaging materials of fragile goods.

The special corrugated corrugations of the corrugated board enable the corrugated board to have strong mechanical strength and can resist various collisions and falls in the carrying process, so that the corrugated board is widely used in various packaging scenes. However, since the cardboard itself is a moisture-regaining and flammable material, there are still many technical problems in the actual use process.

For example, cartons made of corrugated cardboard are not easily placed in humid and dark storage spaces for a long time. Once the corrugated board is affected with damp in a damp space, the mechanical strength of the corrugated board is greatly affected, and various problems such as box body breakage, moisture infiltration, box body inclination and the like occur. Similarly, current corrugated cardboard is not suitable for storing aquatic foods or quick-frozen products, and once such products are thawed, the water can also cause the corrugated cardboard to be broken, so that the corrugated cardboard loses the packaging effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a 7-layer composite corrugated board with good moisture resistance, the 7-layer composite corrugated board can absorb moisture, and the phenomenon of paper board moisture regain is reduced as much as possible; meanwhile, the mechanical structure of the 7-layer composite corrugated board is also optimized.

In order to achieve the above object, the present technical solution provides a 7-layer composite corrugated cardboard, at least comprising: the first outer paperboard layer, the first enhancement layer, the first corrugated core paper layer, the dehumidification dampproof layer, the second corrugated core paper layer, the second enhancement layer and the second outer paperboard layer are sequentially arranged from top to bottom, wherein a drying agent is arranged in the dehumidification dampproof layer at intervals, and the first outer paperboard layer and the second outer paperboard layer are made of waterproof materials.

In some embodiments, the first and second outer paperboard layers are prepared from a composite kraft material.

In some embodiments, the first and second reinforcement layers are carbon fiber layers.

In some embodiments, the first and second reinforcement layers are sugar cane fiber layers.

In some embodiments, the moisture and moisture barrier layer includes vertical plates vertically spaced between the first and second corrugated medium layers, sloping plates obliquely connecting the vertical plates, and desiccant filled between the sloping plates (42) and the vertical plates.

In some embodiments, the desiccant is selected to be activated carbon particles.

In some embodiments, the swash plate is made of carbon fiber.

In some embodiments, a low density polyethylene film is laminated between the first outer paperboard layer and the first reinforcing layer, and between the second outer paperboard layer and the second reinforcing layer.

Compared with the prior art, the technical scheme has the following characteristics and beneficial effects:

1. a dehumidifying and moisture-proof layer is arranged between the first corrugated medium paper layer and the second corrugated medium paper layer, and a plurality of drying agents are arranged at intervals in the dehumidifying and moisture-proof layer to absorb moisture near the 7-layer composite corrugated board and reduce the moisture regain possibility of the 7-layer composite corrugated board. In addition, this dehumidification dampproof course design has riser and swash plate, and then promotes 7 layers of compound corrugated container board's of whole structural strength.

2. First outer cardboard layer and second outer cardboard layer choose for use compound kraft paper material preparation to obtain, can block inside external moisture gets into corrugated container board, and can lay the water proof membrane in the outside on first outer cardboard layer and second outer cardboard layer to play further separation aqueous vapor and get into in the 7 compound corrugated container board of layer.

Drawings

Fig. 1 is a schematic cross-sectional view of a 7-layer composite corrugated board according to an embodiment of the present invention.

In the figure: 10-a first outer paperboard layer, 20-a first reinforcing layer, 30-a first corrugated core paper layer, 40-a dehumidifying and moisture-proof layer, 41-a vertical plate, 42-a sloping plate, 43-a desiccant, 50-a second corrugated core paper layer, 60-a second reinforcing layer and 70-a second outer paperboard layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

As shown in fig. 1, the utility model provides a 7 layers of compound corrugated container board, this 7 layers of compound corrugated container board are different from the biggest technical characterstic of prior art's corrugated container board and lie in having good humidity resistance, and then can make the packing box that obtains by this 7 layers of compound corrugated container board preparation also can be good at humid environment.

Specifically, the 7-layer composite corrugated board at least comprises:

the outer paperboard layer comprises a first outer paperboard layer 10, a first reinforcing layer 20, a first corrugated core paper layer 30, a dehumidifying and moistureproof layer 40, a second corrugated core paper layer 50, a second reinforcing layer 60 and a second outer paperboard layer 70 which are sequentially arranged from top to bottom, wherein a drying agent 43 arranged at intervals is arranged in the dehumidifying and moistureproof layer 40, and the first outer paperboard layer 10 and the second outer paperboard layer 70 are made of waterproof materials.

The first outer paperboard layer 10, the first reinforcing layer 20, the first corrugated core paper layer 30, the moisture and moisture proof layer 40, the second corrugated core paper layer 50, the second reinforcing layer 60 and the second outer paperboard layer 70 are adhesively bonded.

Specifically, the first outer paperboard layer 10 and the second outer paperboard layer 70 are made of composite kraft material, and the composite kraft can well prevent moisture from entering the interior of the corrugated paperboard and can play a flame retardant role to a certain extent.

The first reinforcing layer 20 and the second reinforcing layer 60 are carbon fiber layers or sugarcane fiber layers, and if the carbon fiber layers are selected, the 7-layer composite corrugated board has good toughness. The first reinforcing layer 20 and the second reinforcing layer 60 are arranged to reinforce the strength and impact resistance of the 7-ply composite corrugated board, and increase the mechanical strength of the 7-ply composite corrugated board.

The first outer paperboard layer 10 is adhered to the top side of the first reinforcing layer 20 and the second outer paperboard layer 70 is adhered to the bottom side of the second reinforcing layer 60, and since the composite kraft has a certain flexibility, it is better adhered to the surface of the reinforcing layer in a compressed state.

A dehumidifying moisture-proof layer 40 is arranged between the first corrugated medium paper layer 30 and the second corrugated medium paper layer 50, and specifically, the dehumidifying moisture-proof layer 40 comprises a vertical plate 41 vertically arranged between the first corrugated medium paper layer 30 and the second corrugated medium paper layer 50 at intervals, a sloping plate 42 obliquely connecting the two vertical plates 41, and a desiccant 43 filled between the sloping plate 42 and the vertical plate 41. In some embodiments, the desiccant 43 is disposed within a desiccant tube that is secured to the swash plate 42. Wherein a triangular supporting structure is formed among the vertical plates 41, the inclined plates 42 and the corrugated medium paper layer 50 to further improve the mechanical strength of the 7-layer composite corrugated board; the drying agent 43 can absorb moisture around the 7-layer composite corrugated board, and effectively prevents the composite corrugated board from moisture regain.

In some embodiments, the desiccant 43 is selected to be activated carbon particles, which not only can absorb water, but also can absorb odor.

In some embodiments, the sloping plates 42 are made of carbon fiber, which can reduce the weight of the 7-ply composite corrugated board.

In some embodiments, a low density polyethylene film is laminated between the first outer paperboard layer 10 and the first reinforcing layer 20, and between the second outer paperboard layer 70 and the second reinforcing layer 60, and further functions to prevent moisture from entering the 7-ply composite corrugated paperboard by virtue of the water resistance and moisture resistance of the low density polyethylene film.

In summary, the 7-layer composite corrugated board utilizes the first outer paperboard layer 10 and the second outer paperboard layer 70 at the outermost layers to play the role of blocking moisture from entering the interior of the board, utilizes the first reinforcing layer 20 and the second reinforcing layer 60 to play the role of enhancing the mechanical strength of the board, utilizes the dehumidifying and moisture-proof layer 40 to play the role of absorbing moisture entering the interior of the board, reduces the moisture from inside to outside to directly damage the board body, and improves the moisture resistance of the 7-layer composite corrugated board.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. A 7-ply composite corrugated board, comprising at least:

the waterproof and moistureproof composite board comprises a first outer paperboard layer (10), a first reinforcing layer (20), a first corrugated core paper layer (30), a dehumidifying and moistureproof layer (40), a second corrugated core paper layer (50), a second reinforcing layer (60) and a second outer paperboard layer (70) which are sequentially arranged from top to bottom, wherein drying agents (43) arranged at intervals are arranged in the dehumidifying and moistureproof layer (40), and the first outer paperboard layer (10) and the second outer paperboard layer (70) are prepared from waterproof materials.

2. The 7-ply composite corrugated paperboard according to claim 1, characterized in that the first (10) and second (70) outer paperboard plies are made of a composite kraft material.

3. The 7-ply composite corrugated paperboard according to claim 1, characterized in that the first (20) and second (60) reinforcing plies are carbon fiber plies.

4. The 7-ply composite corrugated paperboard according to claim 1, characterized in that the first (20) and second (60) reinforcing plies are sugar cane fiber plies.

5. The 7-ply composite corrugated cardboard of claim 1, wherein the moisture and moisture proof layer (40) comprises vertical plates (41) disposed at intervals between the first corrugated medium layer (30) and the second corrugated medium layer (50), a slant plate (42) connecting the vertical plates (41) in an inclined manner, and a desiccant (43) filled between the slant plate (42) and the vertical plates (41).

6. 7-ply composite corrugated cardboard according to claim 5, characterised in that the drying agent (43) is selected as activated carbon particles.

7. The 7-ply composite corrugated cardboard of claim 5, wherein the sloping plates (42) are made of carbon fibers.

8. The 7-ply composite corrugated paperboard according to claim 1, characterized in that a low density polyethylene film is laminated between the first outer paperboard layer (10) and the first reinforcing ply (20), and between the second outer paperboard layer (70) and the second reinforcing ply (60).