CN210657789U

CN210657789U - Composite corrugated board

Info

Publication number: CN210657789U
Application number: CN201921242937.4U
Authority: CN
Inventors: 刘朋
Original assignee: Jinhua Magic Packaging Co Ltd
Current assignee: Jinhua Magic Packaging Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-06-02
Anticipated expiration: 2029-08-02

Abstract

The utility model provides a composite corrugated board, composite corrugated board includes: the outer cladding layer is a metal layer, and a first structural layer, a second structural layer and a core layer clamped between the first structural layer and the second structural layer are wrapped in the outer cladding layer, wherein a plurality of spaced supporting rib parts are arranged between the first structural layer and the outer cladding layer; the sandwich layer comprises a middle plate, a first sandwich layer and a second sandwich layer, wherein the first sandwich layer and the second sandwich layer are positioned on two sides of the middle plate, the first sandwich layer comprises a central area and a peripheral area surrounding the central area, the central area comprises a plurality of annular grooves, elastic members are arranged in the annular grooves, and the peripheral area comprises a plurality of strip-shaped bulges.

Description

Composite corrugated board

Technical Field

The utility model relates to a corrugated container board technical field, in particular to composite corrugated container board.

Background

The corrugated board is a multi-layer adhesive body, which at least consists of a corrugated paper core layer and a paper board layer. Corrugated container board has very high mechanical strength, can withstand the collision among the cargo handling and fall, mainly used makes the core of carton, carton and the extranal packing of breakable commodity. Corrugated board is little influenced by temperature, and shading performance is good, and generally influenced by humidity also less, therefore corrugated board is widely used in various product packaging.

At present, the mainstream corrugated board is mainly formed by compounding 250g of yellow surface paper and a corrugated paper core, and the strength, the appearance, the processing technology and the like of the main flow corrugated board are basically used as packaging materials, so that the use of the corrugated board is very limited, and the corrugated board is generally limited in the packaging industry. The corrugated paper has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, convenient storage and transportation, and the like, and has reproducibility. Corrugated paper is widely used, for example, as packaging for food or digital products.

In the related art, a composite corrugated cardboard is disclosed, which comprises an outer layer cardboard, an outer waterproof glue applying layer, a composite corrugated paper core, an inner waterproof glue applying layer and an inner layer cardboard, wherein the outer waterproof glue applying layer contains a fire retardant, and the composite corrugated cardboard has waterproof and fireproof effects.

However, the conventional corrugated cardboard has low strength and low impact resistance during use, so that the packaged objects are damaged during transportation. In addition, the conventional corrugated cardboard has a too short service life. Thus, there is still much room for improvement in corrugated board.

Disclosure of Invention

In order to solve the above problem, the utility model provides a composite corrugated board, composite corrugated board includes: the outer cladding layer is a metal layer, and a first structural layer, a second structural layer and a core layer clamped between the first structural layer and the second structural layer are wrapped in the outer cladding layer, wherein a plurality of spaced supporting rib parts are arranged between the first structural layer and the outer cladding layer; the sandwich layer comprises a middle plate, a first sandwich layer and a second sandwich layer, wherein the first sandwich layer and the second sandwich layer are positioned on two sides of the middle plate, the first sandwich layer comprises a central area and a peripheral area surrounding the central area, the central area comprises a plurality of annular grooves, elastic members are arranged in the annular grooves, the peripheral area comprises a plurality of strip-shaped bulges, and the strip-shaped bulges protrude from the first sandwich layer to the second sandwich layer.

Preferably, a plurality of spaced apart support ribs are provided between the second structural layer and the outer cladding layer, the plurality of support ribs being arranged in parallel.

Preferably, the central region is circular, rectangular or polygonal, and the sectional length of the central region is 1/4 to 1/2 of the length of the composite corrugated cardboard.

Preferably, the central region is provided with a plurality of annular grooves at equal intervals from the center outwards, and the diameters of the plurality of annular grooves gradually increase from the center outwards.

Preferably, the first core layer is a structural layer formed by a plurality of protrusions and grooves alternately, and the support ribs are disposed in the grooves.

Preferably, the second core layer has the same structure as the first core layer.

Preferably, the intermediate sheet is a hollow plastic sheet or a high density paperboard, the intermediate sheet having a thickness less than 1/3 the thickness of the first core layer.

Preferably, the elastic member is an elastic body having a stretching force, and a gap is formed between the elastic member and the middle plate.

Preferably, the first structural layer is provided with a porous adsorption layer on the surface close to the outer cladding layer, and the second structural layer is provided with a porous adsorption layer on the surface close to the outer cladding layer.

Preferably, the first structural layer is a plastic sheet or a high density paperboard.

The beneficial effects of utility model are that:

compared with the prior art, the utility model discloses simple structure, and have waterproof performance, improved corrugated container board's tensile and shock resistance, provided bulk strength, still prolonged life.

Advantageous effects

Drawings

Fig. 1 is a schematic structural section view of the composite corrugated board of the present invention;

fig. 2 is a schematic structural diagram of the core layer of the composite corrugated cardboard of the present invention.

Detailed Description

The invention will be described in further detail below with reference to specific embodiments and with reference to the drawings in order to better understand the solution of the invention and its advantages in various aspects. In the following embodiments, the horizontal direction on the drawing sheet is taken as the horizontal direction, and the vertical direction on the drawing sheet is taken as the vertical direction. Furthermore, the following detailed description is provided to facilitate a more thorough understanding of the present invention and is not intended to limit the invention.

In order to further improve the intensity, the impact resistance of compound corrugated container board, the utility model discloses the structure to compound corrugated container board has improved, and concrete scheme is as follows.

Referring to fig. 1 and 2, the present invention provides a composite corrugated cardboard 100, the composite corrugated cardboard 100 includes an outer cladding 10, the outer cladding 10 includes a first frame 11 and a second frame 12 which are embedded with each other, the outer cladding 10 is a metal layer, and the inner cladding of the outer cladding 10 includes a first structural layer 20, a second structural layer 40, and a core layer 30 sandwiched between the first structural layer 20 (located at the upper side) and the second structural layer 40 (located at the lower side).

As shown in fig. 2, the core layer 30 includes an intermediate plate 31, and a first core layer 32 (on the lower side) and a second core layer 33 (on the upper side) on both sides of the intermediate plate 31, wherein the intermediate plate 31 is preferably a hollow plastic plate or a high-density paperboard, and the thickness of the intermediate plate 31 is less than 1/3 of the thickness of the first core layer 30; the first core layer 32 includes a central region 35 and a peripheral region 36 surrounding the central region 35, specifically, the central region 35 includes a central pillar 351 and a plurality of annular grooves 352 extending outward from the central pillar 351 (preferably, a plurality of annular grooves 352 are provided at equal intervals outward from the center, in other words, the diameters of the plurality of annular grooves 352 gradually increase outward from the center), an elastic member 353 is provided in the annular groove 352, and a gap exists between the elastic member 353 and the middle plate 31; the peripheral region 36 includes a plurality of stripe-shaped protrusions 361, the stripe-shaped protrusions 361 are preferably arranged in a dispersed manner, and the stripe-shaped protrusions 361 protrude from the first core layer 32 toward the middle plate 31. In the case of being subjected to a strong pressure, both groove walls of the annular groove 352 come into contact with each other while resisting the pressure together with the elastic member 353, and thus, the above-described structure improves tensile and impact resistance of the core layer 30.

In the present embodiment, the first core layer 32 and the second core layer 33 have the same structure, and the tensile and impact resistance properties are further improved by the dual core layer structure. However, in other embodiments, the second core layer 33 may also be a planar plate structure or other structural forms.

Further, as shown in fig. 2, the central region 35 is preferably circular, but is not limited thereto, and may be rectangular or polygonal, and the sectional length D of the central region 35 is 1/4 to 1/2 of the length L of the composite corrugated cardboard.

Therefore, the structural improvement of the core layer 30 enhances the structural strength of the core layer 30 and improves the compression resistance, thereby enhancing the overall strength of the corrugated board and prolonging the service life.

In the present embodiment, referring to fig. 1 and 2, preferably, a plurality of first supporting ribs 50 are disposed between the first structural layer 20 and the outer cladding layer 10 at intervals, the first structural layer 20 includes a plurality of first grooves 21 disposed continuously along the length direction thereof, the first grooves 21 are recesses formed by being recessed from top to bottom, the shape of the supporting ribs 16 matches the shape of the first grooves 21 and are matched with each other, and the disposition of the above structures enhances the strength of the first structural layer 20.

In addition, an elastic member 23 is further disposed in the first groove 21, and the elastic member 23 is an elastic body having a stretching force to play a role of buffering, and can effectively resist stretching or pressure pressing.

Further, the first structural layer 20 is further provided with a porous adsorption layer 60 between the plurality of support ribs 50 and the outer cladding layer 10, and the porous adsorption layer 60 is filled with a desiccant, so that the first structural layer has a waterproof function. The porous adsorbent layer 60 is bonded to the surface of the first structural layer 20 near the outer cladding layer 10 (i.e., the upper surface) by, for example, adhesive bonding.

It should be noted that the above description is only for illustrative purpose and should not be construed as limiting the present invention. In other embodiments, the first structural layer 20 may also be a structural layer formed by a plurality of protrusions and grooves alternately.

In this embodiment, a plurality of spaced apart support ribs are disposed between the second structural layer 40 and the outer cladding layer 10, and a plurality of second support ribs 70 are disposed in parallel. In other embodiments, they may also be arranged obliquely or crosswise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. A composite corrugated paperboard, said composite corrugated paperboard comprising:

the outer cladding layer is a metal layer, a first structural layer, a second structural layer and a core layer clamped between the first structural layer and the second structural layer are wrapped in the outer cladding layer,

wherein a plurality of spaced apart support ribs are disposed between the first structural layer and the outer cladding layer;

the sandwich layer comprises a middle plate, a first sandwich layer and a second sandwich layer, wherein the first sandwich layer and the second sandwich layer are positioned on two sides of the middle plate, the first sandwich layer comprises a central area and a peripheral area surrounding the central area, the central area comprises a plurality of annular grooves, elastic members are arranged in the annular grooves, the peripheral area comprises a plurality of strip-shaped bulges, and the strip-shaped bulges protrude from the first sandwich layer to the second sandwich layer.

2. The composite corrugated paperboard of claim 1, wherein a plurality of spaced apart support ribs are disposed between said second structural layer and said outer cover, said plurality of support ribs being disposed in parallel.

3. The composite corrugated cardboard of claim 1 or 2, wherein the central region is circular, rectangular or polygonal, and the cross-sectional length of the central region is 1/4 to 1/2 of the length of the composite corrugated cardboard.

4. The composite corrugated paperboard of claim 3, wherein said central region is provided with a plurality of annular flutes spaced equally outwardly from the center, said plurality of annular flutes increasing in diameter outwardly from the center.

5. The composite corrugated paperboard of claim 4, wherein said first core layer is a structural layer having a plurality of alternating projections and recesses, said support ribs being disposed within said recesses.

6. The composite corrugated paperboard of claim 4, wherein said second core layer is of the same construction as said first core layer.

7. The composite corrugated paperboard of claim 6, wherein said middle board is a hollow plastic board or a high density paperboard, said middle board having a thickness less than 1/3 the thickness of said first core layer.

8. The composite corrugated paperboard of claim 1, wherein said resilient member is an elastic body having a stretching force, and a gap is present between said resilient member and said middle plate.

9. The composite corrugated paperboard of claim 1, wherein said first structural layer is provided with a porous adsorbent layer on a surface adjacent said outer cover layer and said second structural layer is provided with a porous adsorbent layer on a surface adjacent said outer cover layer.

10. The composite corrugated board of claim 9, wherein said first structural layer is a plastic sheet or a high density paperboard.