High-density paperboard with multi-layer composite structure

Abstract

The utility model discloses a high-density paperboard with a multilayer composite structure, and relates to the technical field of corrugated paperboards, corrugated medium paper layers are arranged on the upper side and the lower side of a reinforcing core paper layer, protective layers are arranged on the sides, far away from each other, of the two corrugated medium paper layers, an upper paper surface and a lower paper surface are respectively bonded with one protective layer through an adhesive, and the upper paper surface and the lower paper surface are respectively bonded with the other protective layer through an adhesive. More than two first supporting strips are uniformly arranged at the bottom of the upper connecting layer, more than two second supporting strips are uniformly arranged at the top of the lower connecting layer, the first supporting strips and the second supporting strips are arranged in a staggered manner, and the sections of the first supporting strips and the second supporting strips are parallelograms; x-shaped reinforcing strips are further arranged on the inner sides of the first supporting strip and the second supporting strip. According to the high-density paperboard with the multi-layer composite structure, through the arrangement of the composite sandwich layer, the bearing capacity of the paperboard can be improved, the paperboard is not prone to being pressed and deformed, and the paperboard can have good damping and buffering performance so as to fully protect objects loaded in the paperboard.

Description

TECHNICAL FIELD

[0001] The utility model relates to corrugated paperboard technical field more specifically, it relates to a kind of high-density paperboard of multilayer composite structure. BACKGROUND

[0002] Corrugated paper is by glazed paper and the board-shaped object formed by the corrugated paper adhered by the wave shape of corrugated roll processing, with easy to process, good cushioning compression resistance etc., paper box made of corrugated paper has been widely used in product packaging.However, in the actual use process, due to the gap between corrugated paper and inner and outer layer glazed paper is larger, when being subjected to larger pressure, corrugated paper is prone to irreversible deformation, leading to the load capacity of paperboard is poor. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a kind of high-density paperboard of multilayer composite structure, by the composite sandwich layer being set, not only can improve the load capacity of paperboard, not easy to be compressed deformation, and still can make paperboard have good shock absorption buffering performance, to fully protect the goods loaded inside.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] The utility model provides a kind of high-density paperboard of multilayer composite structure, including upper paper face, composite sandwich layer and lower paper face, the lower paper face is provided with composite sandwich layer below upper paper face, the lower paper face is provided with composite sandwich layer below, composite sandwich layer includes protective layer, corrugated core paper layer and reinforced core paper layer, the upper and lower sides of reinforced core paper layer are provided with corrugated core paper layer, the side of two corrugated core paper layers away from each other is provided with protective layer, and upper paper face and lower paper face are adhered with one of protective layer by adhesive, and reinforced core paper layer includes upper connecting layer, first support strip, second support strip, X type reinforcing strip and lower connecting layer, the bottom of upper connecting layer is uniformly provided with more than two first support strips, and the top of lower connecting layer is uniformly provided with more than two second support strips, and first support strip and second support strip are staggered arrangement, the section of first support strip and second support strip is parallelogram, and X type reinforcing strip is further provided in the inside of first support strip and second support strip.

[0006] In the preferred technical scheme of the utility model, two or more rubber support tubes are provided in the inside of corrugated core paper layer.

[0007] In the preferred technical scheme of the utility model, buffer block is further provided at the both ends of the top of lower connecting layer, and the bottom end of buffer block is connected with lower connecting layer, and the top end of buffer block is connected to the bottom of upper connecting layer.

[0008] In the preferred technical scheme of the utility model, fire-retardant layer is provided above upper paper face.

[0009] In the preferable technical scheme of the utility model, the lower paper surface is provided with a foam buffer layer below.

[0010] The utility model discloses the beneficial effect that:

[0011] The utility model discloses a kind of high-density paperboard of multilayer composite structure, by being provided with composite sandwich layer, when being subjected to jolt or external force impact, upper paper surface or lower paper surface will be extruded, in turn make corrugated core paper layer and rubber support tube occur elastic deformation, to play the role of shock absorption and buffering, simultaneously, external force will also extrude first support bar and second support bar, make it relatively slide and deform, to realize secondary shock absorption and buffering, so that paperboard has good shock absorption and buffering performance, to fully protect the goods loaded in interior, and composite sandwich layer can also improve the carrying capacity of paperboard, make it not easy to be pressed deformation, and when losing external force effect, corrugated core paperboard, rubber support tube and other components will automatically restore, so that paperboard is more durable. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic diagram of the high-density paperboard of multilayer composite structure provided in the specific embodiment of the utility model.

[0013] In the drawing:

[0014] 1, upper paper surface;2, composite sandwich layer;21, protective layer;22, corrugated core paper layer;23, reinforced core paper layer;231, upper connecting layer;232, first support bar;233, second support bar;234, X-shaped reinforcing strip;235, lower connecting layer;236, buffer block;24, rubber support tube;3, lower paper surface;4, fire-retardant layer;5, foam buffer layer. DETAILED DESCRIPTION

[0015] The technical scheme of the utility model is further illustrated in the specific embodiment below in conjunction with the drawings.

[0016] As Figure 1As shown, the embodiment provides a high-density paperboard of a multi-layer composite structure, which comprises an upper paper surface 1, a composite sandwich layer 2 and a lower paper surface 3, the upper paper surface 1 is provided below the composite sandwich layer 2, the composite sandwich layer 2 is provided below the lower paper surface 3, the composite sandwich layer 2 comprises a protective layer 21, a corrugated core paper layer 22 and a reinforced core paper layer 23, the upper and lower sides of the reinforced core paper layer 23 are both provided with the corrugated core paper layer 22, the sides of the two corrugated core paper layers 22 away from each other are both provided with the protective layer 21, the upper paper surface 1 and the lower paper surface 3 are adhered to one of the protective layers 21 through an adhesive respectively, the reinforced core paper layer 23 comprises an upper connecting layer 231, a first supporting strip 232, a second supporting strip 233, an X-shaped reinforcing strip 234 and a lower connecting layer 235, the bottom of the upper connecting layer 231 is uniformly provided with two or more first supporting strips 232, the top of the lower connecting layer 235 is uniformly provided with two or more second supporting strips 233, and the first supporting strips 232 and the second supporting strips 233 are arranged in a staggered manner, the cross sections of the first supporting strips 232 and the second supporting strips 233 are parallelogram, and the X-shaped reinforcing strips 234 are further arranged in the first supporting strips 232 and the second supporting strips 233. In the embodiment, the upper paper surface 1 and the lower paper surface 3 are both hard paperboards.The composite sandwich layer 2 is a core layer of the paperboard, which can ensure the overall mechanical strength of the paperboard. The protective layer 21 is made of glass fiber material, which can prevent puncture and improve the durability of the paperboard. The upper paper surface 1 is adhered to the top end surface of the upper protective layer 21 by adhesive, and the lower paper surface 3 is adhered to the bottom end surface of the lower protective layer 21 by adhesive. The corrugated core paper layer 22 is corrugated paperboard, which has a certain buffering and shock absorbing capacity, and the protective layer 21 is adhered to the corrugated core paper layer 22 by adhesive. The reinforcing core paper layer 23 can play a role in compression support and shock absorption and buffering, and will elastically deform when subjected to external compression, and will automatically recover after the external force disappears. The upper connecting layer 231 and the lower connecting layer 235 are both hardboard, and the upper connecting layer 231 is located above the lower connecting layer 235 and is arranged in parallel. The upper corrugated core paper layer 22 is adhered to the top end surface of the upper connecting layer 231 by adhesive, and the lower corrugated core paper layer 22 is adhered to the bottom end surface of the lower connecting layer 235 by adhesive. The inclined surface of the first support strip 232 is in contact with the inclined surface of the adjacent second support strip 233, so that the first support strip 232 and the second support strip 233 can slide relative to each other when subjected to external force, thereby achieving the effect of shock absorption and buffering. A gap is reserved between the bottom of the first support strip 232 and the lower connecting layer 235, and between the top of the second support strip 233 and the upper connecting layer 231, to allow the first support strip 232 and the second support strip 233 to move up and down. The X-shaped reinforcing strip 234 is an elastic rod, and two or more X-shaped reinforcing strips 234 are arranged inside each first support strip 232 and each second support strip 233. The X-shaped reinforcing strip 234 can support the first support strip 232 and the second support strip 233 to improve their load capacity, and can promote the recovery of the first support strip 232 and the second support strip 233 after losing external force.

[0017] Specifically, two or more rubber support tubes 24 are arranged inside the corrugated core paper layer 22. In this embodiment, the corrugated core paper layer 22 includes corrugated paper, and the corrugated paper has a trough groove on the upper side and a peak groove on the lower side. The rubber support tube 24 is arranged in the trough groove and the peak groove. The rubber support tube 24 is provided with an elastic ball inside, which plays a role in auxiliary buffering and shock absorption. The rubber support tube 24 and the elastic ball will deform when subjected to external pressure, and will automatically recover after losing external force.

[0018] Specifically, the two ends of the top of the lower connecting layer 235 are also provided with buffer blocks 236, and the bottom end of the buffer block 236 is connected with the lower connecting layer 235, and the top end of the buffer block 236 is connected to the bottom of the upper connecting layer 231. In this embodiment, the buffer block 236 is made of flexible rubber material, which is used to connect the upper connecting layer 231 and the lower connecting layer 235, so as to make the paperboard elastically deform when it is subjected to external force, and assist in shock absorption. And the buffer block 236 is located at the two sides of the first supporting strip 232 and the second supporting strip 233, which can limit the lateral freedom degree of the upper connecting layer 231 and the lower connecting layer 235, and prevent the first supporting strip 232 and the second supporting strip 233 from being out of contact.

[0019] Specifically, the upper paper surface 1 is provided with a fire-retardant layer 4. In this embodiment, the fire-retardant layer 4 is made of asbestos material, which will not burn when it meets fire, so as to play a role in protecting the paperboard.

[0020] Specifically, the lower paper surface 3 is provided with a foam buffer layer 5. In this embodiment, the foam buffer layer 5 is made of foam material, which can elastically deform when subjected to extrusion, so as to play a role in assisting shock absorption.

[0021] The utility model is described through the preferred embodiment, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. The utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of the present application all belong to the scope of protection of the utility model.

Claims

1. A high density paperboard of a multi-layered composite structure, characterized by: The application relates to a corrugated paper box, which comprises an upper paper surface (1), a composite sandwich layer (2) and a lower paper surface (3), the composite sandwich layer (2) is arranged below the upper paper surface (1), the lower paper surface (3) is arranged below the composite sandwich layer (2), the composite sandwich layer (2) comprises a protective layer (21), a corrugated core paper layer (22) and a reinforced core paper layer (23), the upper and lower sides of the reinforced core paper layer (23) are both provided with the corrugated core paper layer (22), the side, away from each other, of the two corrugated core paper layers (22) is both provided with the protective layer (21), the upper paper surface (1) and the lower paper surface (3) are adhered to one of the protective layers (21) through adhesive, the reinforced core paper layer (23) comprises an upper connecting layer (231), a first supporting strip (232), a second supporting strip (233), an X-shaped reinforcing strip (234) and a lower connecting layer (235), the bottom of the upper connecting layer (231) is uniformly provided with two or more first supporting strips (232), the top of the lower connecting layer (235) is uniformly provided with two or more second supporting strips (233), the first supporting strips (232) and the second supporting strips (233) are arranged in a staggered mode, the cross sections of the first supporting strips (232) and the second supporting strips (233) are parallelograms, and the X-shaped reinforcing strips (234) are arranged in the first supporting strips (232) and the second supporting strips (233).

2. A high density paperboard of a multi-layered composite structure according to claim 1, characterized by: Two or more rubber supporting tubes (24) are arranged in the corrugated core paper layer (22).

3. A high density paperboard of a multi-layered composite structure according to claim 1, characterized by: Buffer blocks (236) are arranged at the two ends of the top of the lower connecting layer (235), the bottom ends of the buffer blocks (236) are connected with the lower connecting layer (235), and the top ends of the buffer blocks (236) are connected with the bottom of the upper connecting layer (231).

4. A high density paperboard of a multi-layered composite structure according to claim 1, characterized by: A fire-retardant layer (4) is arranged above the upper paper surface (1).

5. A high density paperboard of a multi-layered composite structure according to claim 1, characterized by: A foam buffer layer (5) is arranged below the lower paper surface (3).

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