Pressure-resistant multi-layer composite corrugated paperboard

Abstract

The utility model discloses a multilayer composite corrugated paperboard of pressure resistance, including corrugated paperboard paper core, the upper and lower end surface of corrugated paperboard paper core all are fixed with one wavy line reinforced hard paper, the upper and lower end surface of wavy line reinforced hard paper all is equipped with a plurality of arc grooves, the inside of every arc groove all is equipped with one oval reinforcing hard paper cover that is oval in whole, and the inside fixed of oval reinforcing hard paper cover has cross -shaped reinforcing support, preferably, the wavy line reinforced hard paper upper end surface located above corrugated paperboard paper core and the wavy line reinforced hard paper lower end surface located below corrugated paperboard paper core all are fixed with first outer layer paperboard, the utility model discloses through the cavity area of every wavy line reinforced hard paper also that is the inside embedding of arc groove oval reinforcing hard paper cover, to form closed ring support structure, can promote the local compression rigidity of paper cup through above -mentioned technical scheme, prevent arc groove collapse, to improve paperboard overall compression strength and structural stability.

Description

Technical Field

[0001] This utility model relates to the field of paperboard technology, specifically to a pressure-resistant multi-layer composite corrugated paperboard. Background Technology

[0002] Corrugated cardboard is a multi-layered adhesive, consisting of at least one layer of corrugated core paper and one or more layers of linerboard. This structural design gives corrugated cardboard good mechanical strength and cushioning properties, enabling it to withstand certain pressure and impact. Therefore, it is widely used in commodity packaging, transport packaging and other fields.

[0003] Multi-layer composite corrugated cardboard refers to multi-layer composite corrugated cardboard made of two or more layers of corrugated core paper and multiple layers of linerboard through an adhesive bonding process. This type of cardboard is more complex in structure than common single-wall or double-wall corrugated cardboard, and has higher strength, rigidity and cushioning performance, making it suitable for transport packaging of heavy or high-value products.

[0004] However, existing multi-layer composite corrugated cardboard generally relies on the corrugated cardboard inside for compression resistance, which has low compressive strength. Therefore, it does not meet the current requirements. In response, we propose a pressure-resistant multi-layer composite corrugated cardboard. Utility Model Content

[0005] The purpose of this invention is to provide a pressure-resistant multi-layer composite corrugated cardboard to solve the problems mentioned in the background art, such as the fact that existing multi-layer composite corrugated cardboard generally relies on the corrugated cardboard located inside for compression resistance, resulting in low compression strength.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressure-resistant multi-layer composite corrugated cardboard, comprising a corrugated cardboard core, characterized in that: a wavy line reinforcing cardboard is fixed to the upper and lower end faces of the corrugated cardboard core, and multiple arc-shaped grooves are provided on the upper and lower end faces of the wavy line reinforcing cardboard, and an elliptical reinforcing cardboard sleeve is provided inside each arc-shaped groove, and a cross-shaped reinforcing bracket is fixed inside the elliptical reinforcing cardboard sleeve.

[0007] Preferably, a first outer cardboard is fixed to both the upper end face of the corrugated cardboard reinforcing liner above the corrugated cardboard core and the lower end face of the corrugated cardboard reinforcing liner below the corrugated cardboard core, and a second outer cardboard is fixed to one side of the outer surface of the first outer cardboard.

[0008] Preferably, both sides of the outer surface of the elliptical reinforced cardboard sleeve are coated with fixing adhesive. The fixing adhesive on the upper surface of the first elliptical reinforced cardboard sleeve (from top to bottom) is bonded to the first outer cardboard layer above the corrugated cardboard core. The fixing adhesive on the lower surface of the second elliptical reinforced cardboard sleeve (from top to bottom) is bonded to the first outer cardboard layer below the corrugated cardboard core. The fixing adhesive applied to the elliptical reinforced cardboard sleeve facing the wavy reinforced cardboard is bonded to the wavy reinforced cardboard. The fixing adhesive applied to the elliptical reinforced cardboard sleeve facing the corrugated cardboard core is bonded to the corrugated cardboard core.

[0009] Preferably, an anti-deformation bracket is provided on both sides of the fixing adhesive, and the anti-deformation bracket is made of cardboard as a whole.

[0010] Preferably, an insert plate is fixed on one side of the outer surface of the anti-deformation bracket, and a slot is provided on the outer side of the insert plate located on the outer side of the corrugated reinforcing cardboard. The insert plate is made of plastic as a whole, and the outer surface of the insert plate is in contact with the inner wall of the slot.

[0011] Preferably, the surface of the anti-deformation bracket facing the wavy line reinforcing cardboard is an arc-shaped reinforcing cardboard contact surface, and the surface of the wavy line reinforcing cardboard facing the anti-deformation bracket is an arc-shaped bracket contact surface, and the arc-shaped bracket contact surface and the arc-shaped reinforcing cardboard contact surface are in contact with each other.

[0012] Preferably, the surface of the anti-deformation bracket facing the elliptical reinforced cardboard sleeve is a first arc-shaped surface, and the surface of the elliptical reinforced cardboard sleeve facing the anti-deformation bracket is a second arc-shaped surface, and the first arc-shaped surface and the second arc-shaped surface are in contact with each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model provides an elliptical reinforcing cardboard sleeve inside each arc groove on the upper and lower ends of the corrugated reinforcing cardboard, which is mainly used for compression resistance. Through the above technical solution, the elliptical reinforcing cardboard sleeve can be embedded in the cavity area of ​​each corrugated reinforcing cardboard, that is, inside the arc groove, to form a closed ring support structure, improve local compression stiffness, prevent the arc groove from collapsing, and improve the overall compression strength and structural stability of the cardboard.

[0015] 2. This utility model provides a cross-shaped reinforcement bracket inside each oval reinforced cardboard sleeve. The cross-shaped reinforcement bracket increases the compressive strength of the oval reinforced cardboard sleeve itself, thereby preventing deformation of the oval reinforced cardboard sleeve supporting the wavy line reinforcement. The above technical solution further improves the overall compressive strength of the cardboard. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front view of the entire utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 This utility model Figure 3 Enlarged view of the structure at point B.

[0020] In the diagram: 1. Corrugated cardboard core; 2. Wavy reinforcing cardboard; 3. Arc-shaped groove; 4. Oval reinforcing cardboard sleeve; 5. Fixing adhesive; 6. Cross-shaped reinforcing bracket; 7. First outer cardboard layer; 8. Second outer cardboard layer; 9. Anti-deformation bracket; 10. First arc-shaped surface; 11. Second arc-shaped surface; 12. Slot; 13. Insert plate; 14. Arc-shaped reinforcing paper contact surface; 15. Arc-shaped bracket contact surface. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] The corrugated cardboard core 1 (model 06), fixing adhesive 5 (model 6005), and insert plate 13 (model PVC) mentioned in this utility model can be obtained from the market or through private customization.

[0023] Please see Figures 1 to 4 This utility model provides an embodiment of a pressure-resistant multi-layer composite corrugated cardboard, comprising a corrugated cardboard core 1, with a wavy-line reinforcing cardboard 2 fixed to both the upper and lower ends of the corrugated cardboard core 1. The upper and lower ends of the wavy-line reinforcing cardboard 2 are provided with multiple arc-shaped grooves 3. Each arc-shaped groove 3 contains an elliptical reinforcing cardboard sleeve 4, and a cross-shaped reinforcing bracket 6 is fixed inside the elliptical reinforcing cardboard sleeve 4. Through the above technical solution, the elliptical reinforcing cardboard sleeve 4 can be embedded in the cavity area of ​​each wavy-line reinforcing cardboard 2, i.e., inside the arc-shaped groove 3, to form a closed-loop support structure, thereby improving local compressive strength, preventing the arc-shaped groove 3 from collapsing, and improving the overall compressive strength and structural stability of the cardboard.

[0024] Each oval reinforced cardboard sleeve 4 has a cross-shaped reinforcing bracket 6 inside. The cross-shaped reinforcing bracket 6 can increase the compressive strength of the oval reinforced cardboard sleeve 4 itself, so as to prevent the oval reinforced cardboard sleeve 4 supporting the wavy line reinforced cardboard 2 from deforming. The above technical solution further improves the overall compressive strength of the cardboard.

[0025] The upper end face of the corrugated reinforcing cardboard 2 above the corrugated cardboard core 1 and the lower end face of the corrugated reinforcing cardboard 2 below the corrugated cardboard core 1 are both fixed with a first outer cardboard 7. A second outer cardboard 8 is fixed to one side of the outer surface of the first outer cardboard 7. The first outer cardboard 7 and the second outer cardboard 8 can form the outer shell of the cardboard to increase the overall surface resistance of the cardboard.

[0026] Both sides of the outer surface of the oval-shaped reinforced cardboard sleeve 4 are coated with fixing adhesive 5. The fixing adhesive 5 on the upper end of the oval-shaped reinforced cardboard sleeve 4, located on the top surface of the first wavy line reinforced cardboard 2 from top to bottom, is bonded to the first outer cardboard 7 located above the corrugated cardboard core 1. The fixing adhesive 5 on the lower end of the oval-shaped reinforced cardboard sleeve 4, located on the bottom surface of the second wavy line reinforced cardboard 2 from top to bottom, is bonded to the first outer cardboard 7 located below the corrugated cardboard core 1. The adhesive 5 applied to the side of the elliptical reinforced cardboard sleeve 4 facing the corrugated cardboard core 1 is bonded to the corrugated cardboard core 2. The adhesive 5 applied to the side of the elliptical reinforced cardboard sleeve 4 facing the corrugated cardboard core 1 is bonded to the corrugated cardboard core 1. By applying the adhesive 5 to the outer surface of the elliptical reinforced cardboard sleeve 4, the corrugated cardboard core 1, the corrugated cardboard core 2, the elliptical reinforced cardboard sleeve 4 and the first outer cardboard 7 can be bonded together to improve the overall structural stability of the cardboard.

[0027] Both sides of the fixing glue 5 are provided with an anti-deformation bracket 9, and the anti-deformation bracket 9 is made of cardboard in one piece. An insert plate 13 is fixed on one side of the outer surface of the anti-deformation bracket 9. The outer side of the insert plate 13 is provided with a slot 12 located on the outer side of the corrugated reinforcing cardboard 2. The insert plate 13 is made of plastic in one piece, and the outer surface of the insert plate 13 is in contact with the inner wall of the slot 12. By inserting the insert plate 13 into the slot 12 on the outer surface of the corrugated reinforcing cardboard 2, the strength of the connection area between different arc grooves 3 on the outer surface of the corrugated reinforcing cardboard 2 can be enhanced, so as to prevent the cardboard from deforming due to the tensile force.

[0028] The surface of the anti-deformation bracket 9 facing the corrugated reinforcing cardboard 2 is an arc-shaped reinforcing paper contact surface 14, and the surface of the corrugated reinforcing cardboard 2 facing the anti-deformation bracket 9 is an arc-shaped bracket contact surface 15, and the arc-shaped bracket contact surface 15 and the arc-shaped reinforcing paper contact surface 14 are in contact with each other; the arc-shaped reinforcing paper contact surface 14, which is in contact with the corrugated cardboard core 1 or the first outer cardboard 7, can prevent deformation of the position on the corrugated reinforcing cardboard 2 that is directly fixed to the corrugated cardboard core 1 or the first outer cardboard 7.

[0029] The surface of the anti-deformation bracket 9 facing the elliptical reinforced cardboard sleeve 4 is a first arc-shaped surface 10, and the surface of the elliptical reinforced cardboard sleeve 4 facing the anti-deformation bracket 9 is a second arc-shaped surface 11, and the first arc-shaped surface 10 and the second arc-shaped surface 11 are in contact with each other; by the first arc-shaped surface 10 located on the outer surface of the anti-deformation bracket 9 and in contact with the elliptical reinforced cardboard sleeve 4, deformation can be prevented from occurring on the surface of the elliptical reinforced cardboard sleeve 4 that is in direct contact with the corrugated cardboard core 1 or 17.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure-resistant multi-layer composite corrugated cardboard, comprising a corrugated cardboard core (1), characterized in that: The corrugated cardboard core (1) has a wavy line reinforcing cardboard (2) fixed on both the upper and lower ends. The wavy line reinforcing cardboard (2) has multiple arc grooves (3) on both the upper and lower ends. Each arc groove (3) has an elliptical reinforcing cardboard sleeve (4) that is elliptical in shape, and a cross-shaped reinforcing bracket (6) is fixed inside the elliptical reinforcing cardboard sleeve (4).

2. The pressure-resistant multi-layer composite corrugated cardboard according to claim 1, characterized in that: The upper end face of the corrugated cardboard core (1) and the lower end face of the corrugated cardboard core (1) are both fixed with a first outer cardboard (7), and a second outer cardboard (8) is fixed on one side of the outer surface of the first outer cardboard (7).

3. The pressure-resistant multi-layer composite corrugated cardboard according to claim 2, characterized in that: Both sides of the outer surface of the elliptical reinforced cardboard sleeve (4) are coated with fixing glue (5). The fixing glue (5) on the upper surface of the elliptical reinforced cardboard sleeve (4) located on the upper surface of the first wavy line reinforced cardboard (2) from top to bottom is bonded to the first outer cardboard (7) located above the corrugated cardboard core (1). The fixing glue (5) on the lower surface of the elliptical reinforced cardboard sleeve (4) located on the lower surface of the second wavy line reinforced cardboard (2) from top to bottom is bonded to the first outer cardboard (7) located below the corrugated cardboard core (1). The fixing glue (5) applied to the elliptical reinforced cardboard sleeve (4) facing the wavy line reinforced cardboard (2) is bonded to the wavy line reinforced cardboard (2). The fixing glue (5) applied to the elliptical reinforced cardboard sleeve (4) facing the corrugated cardboard core (1) is bonded to the corrugated cardboard core (1).

4. The pressure-resistant multi-layer composite corrugated cardboard according to claim 3, characterized in that: Both sides of the fixing adhesive (5) are provided with an anti-deformation bracket (9), and the anti-deformation bracket (9) is made of cardboard as a whole.

5. The pressure-resistant multi-layer composite corrugated cardboard according to claim 4, characterized in that: A plate (13) is fixed on one side of the outer surface of the anti-deformation bracket (9). The outer side of the plate (13) is provided with a slot (12) located on the outer side of the wavy line reinforced cardboard (2). The plate (13) is made of plastic as a whole, and the outer surface of the plate (13) is in contact with the inner wall of the slot (12).

6. The pressure-resistant multi-layer composite corrugated cardboard according to claim 5, characterized in that: The surface of the anti-deformation bracket (9) facing the wavy line reinforced cardboard (2) is an arc-shaped reinforced paper contact surface (14), and the surface of the wavy line reinforced cardboard (2) facing the anti-deformation bracket (9) is an arc-shaped bracket contact surface (15), and the arc-shaped bracket contact surface (15) and the arc-shaped reinforced paper contact surface (14) are in contact with each other.

7. The pressure-resistant multi-layer composite corrugated cardboard according to claim 6, characterized in that: The surface of the anti-deformation bracket (9) facing the elliptical reinforced cardboard sleeve (4) is the first arc surface (10), and the surface of the elliptical reinforced cardboard sleeve (4) facing the anti-deformation bracket (9) is the second arc surface (11), and the first arc surface (10) and the second arc surface (11) are in contact with each other.

Images