Puncture-resistant corrugated board

Abstract

The utility model belongs to the technical field of corrugated boards, and particularly relates to a puncture-resistant corrugated board which comprises a first paper board layer, a second paper board layer and a third paper board layer which are sequentially stacked from bottom to top, the second paper board layer comprises an upper foam board and U-shaped corrugated paper, the U-shaped corrugated paper is provided with upper ridges and lower ridges which are arranged at intervals, and the upper foam board and the lower foam board are arranged at intervals. And the upper foam board is provided with an upper recess corresponding to the upper ridge peak and an upper bulge corresponding to the lower ridge peak. The top surface of the upper ridge peak is pasted and fixed with the upper recess, the bonding area with the upper ridge peak is increased through the recess design, the situation that the upper ridge peak is loosened is reduced, the side surface of the lower ridge peak is pasted and fixed with the upper protrusion, the bonding surface with the lower ridge peak is increased through the protrusion design, and the situation that the lower ridge peak is loosened is reduced. The first gaps are used for providing deformation spaces for the corrugations, so that the resilience characteristic of the U-shaped corrugated paper is reserved; and the thickness of the product is increased through the upper foam plate, so that the puncture resistance is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to corrugated paperboard technical field, especially relate to the puncture -resistant corrugated paperboard. BACKGROUND

[0002] Corrugated paperboard is a multilayer adhesive body, which is formed by bonding at least one layer of corrugated paper and one layer of boxboard paper, has good elasticity and extensibility, and is mainly used for manufacturing paper boxes, sandwichs of paper boxes and other packaging materials of fragile commodities. In the prior art, the U-shaped corrugated paper has the characteristics of high corrugation peak and good resilience, and the upper corrugation peak and the lower corrugation peak of the U-shaped corrugated paper are directly pasted and fixed to the paper surface by glue, however, the corrugation peak is arc-shaped, and is prone to loosening due to insufficient contact area with the paper surface. SUMMARY

[0003] The utility model discloses a puncture -resistant corrugated paperboard, which aims to solve the technical problems in the prior art.

[0004] To achieve the above-mentioned purpose, the puncture -resistant corrugated paperboard provided by the utility model embodiment comprises a first paperboard layer, a second paperboard layer and a third paperboard layer which are sequentially stacked from bottom to top, the second paperboard layer comprises an upper foam board and a U-shaped corrugated paper, the U-shaped corrugated paper has upper corrugation peaks and lower corrugation peaks arranged at intervals, the upper foam board is provided with an upper recess corresponding to the upper corrugation peaks and an upper protrusion corresponding to the lower corrugation peaks, the upper recess is pasted and fixed to the top surface of the upper corrugation peak, and the upper protrusion is pasted and fixed to the side surface of the lower corrugation peak and forms a first gap with the top surface of the lower corrugation peak.

[0005] Optionally, the second paperboard layer further comprises a lower foam board, the U-shaped corrugated paper is located between the upper foam board and the lower foam board, the lower foam board is provided with a lower protrusion corresponding to the upper corrugation peaks and a lower recess corresponding to the lower corrugation peaks, the lower protrusion is pasted and fixed to the side surface of the upper corrugation peak and forms a second gap with the bottom surface of the upper corrugation peak, and the lower recess is pasted and fixed to the bottom surface of the lower corrugation peak.

[0006] Optionally, the peak height of the upper corrugation peak is the sum of the depth of the upper recess and the height of the lower protrusion, and the peak height of the lower corrugation peak is the sum of the height of the upper protrusion and the depth of the lower recess.

[0007] Optionally, the upper foam board and the lower foam board are both made of EPE pearl wool.

[0008] Optionally, it further comprises a first middle paper, and the upper foam board is adhesively compounded with the first paperboard layer through the first middle paper.

[0009] Optionally, it further comprises a second middle paper, and the lower foam board is adhesively compounded with the second paperboard layer through the second middle paper.

[0010] Optionally, the first paperboard layer comprises a first A-shaped corrugated paper and a face paper, a top of the first A-shaped corrugated paper is fixedly attached to an inner surface of the face paper, and a bottom is fixedly attached to a top surface of the second paperboard layer.

[0011] Optionally, the third paperboard layer comprises a second A-shaped corrugated paper and a bottom paper, a bottom of the second A-shaped corrugated paper is fixedly attached to an inner surface of the bottom paper, and a top is fixedly attached to a bottom surface of the second paperboard layer.

[0012] The above one or more technical solutions in the puncture-resistant corrugated paperboard provided by the embodiments of the present application have at least one of the following technical effects: the top surface of the upper corrugated peak is fixedly attached to the upper recess, the bonding area with the upper corrugated peak is increased by the recess design, which is beneficial to reduce the loosening of the upper corrugated peak; the side surface of the lower corrugated peak is fixedly attached to the upper protrusion, the bonding surface with the lower corrugated peak is increased by the protrusion design, which is beneficial to reduce the loosening of the lower corrugated peak, and the first gap is used to provide a deformation space for the corrugated peak, thereby retaining the rebounding characteristics of the U-shaped corrugated paper; the thickness of the product is increased by the upper foam board, which is beneficial to improve the puncture resistance. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 The cross-sectional schematic view of the puncture-resistant corrugated paperboard provided by the embodiments of the present application.

[0015] Figure 2 For Figure 1 The local enlarged view of A in the middle.

[0016] In the drawings, various reference signs represent:

[0017] 1 - first paperboard layer 2 - second paperboard layer 3 - third paperboard layer

[0018] 11 - first A-shaped corrugated paper 12 - face paper 21 - upper foam board

[0019] 211 - upper recess 212 - upper protrusion 22 - U-shaped corrugated paper

[0020] 221 - upper corrugated peak 222 - lower corrugated peak 23 - lower foam board

[0021] 231 - lower recess 232 - lower protrusion 24 - first gap

[0022] 25 - second void 26 - first medium paper 27 - second medium paper

[0023] 31 - second A-shaped corrugated paper 32 - base paper. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components have the same reference numerals throughout the several views. The embodiments described below are exemplary and are intended to explain the embodiments of the present application, and should not be understood as limiting the present application.

[0025] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the embodiments of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0027] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] In one embodiment of the present application, as Figures 1-2As shown, a puncture-resistant corrugated cardboard is provided, comprising a first cardboard layer, a second cardboard layer, and a third cardboard layer stacked sequentially from bottom to top. The second cardboard layer includes an upper foam board and U-shaped corrugated paper. The U-shaped corrugated paper has upper and lower corrugations arranged at intervals. The upper foam board has upper depressions corresponding to the upper corrugations and upper protrusions corresponding to the lower corrugations. The upper depressions are bonded and fixed to the top surface of the upper corrugations, and the upper protrusions are bonded and fixed to the side surface of the lower corrugations, forming a first gap with the top surface of the lower corrugations. The top surface of the upper corrugated peak is bonded to the upper recess, and the recess design increases the bonding area with the upper corrugated peak, which helps to reduce the possibility of the upper corrugated peak loosening. The side surface of the lower corrugated peak is bonded to the upper protrusion, and the protrusion design increases the bonding area with the lower corrugated peak, which helps to reduce the possibility of the lower corrugated peak loosening. In addition, the first gap provides deformation space for the corrugated peak, thereby preserving the resilience of the U-shaped corrugated paper. The thickness of this product is increased by the upper foam board, which helps to improve the puncture resistance.

[0029] In one embodiment of this utility model, such as Figures 1-2 As shown, a puncture-resistant corrugated cardboard is provided, comprising a first cardboard layer 1, a second cardboard layer 2, and a third cardboard layer 3 stacked sequentially from bottom to top. The second cardboard layer 2 includes an upper foam board 21 and U-shaped corrugated paper 22. The U-shaped corrugated paper 22 has upper corrugations 221 and lower corrugations 222 arranged at intervals. The upper foam board 21 is provided with an upper recess 211 corresponding to the upper corrugation 221 and an upper protrusion 212 corresponding to the lower corrugation 222. The upper recess 211 is glued and fixed to the top surface of the upper corrugation 221, and the upper protrusion 212 is glued and fixed to the side surface of the lower corrugation 222, and forms a first gap 24 with the top surface of the lower corrugation 222. The top surface of the upper corrugated peak 221 is bonded and fixed to the upper recess 211. The recess design increases the bonding area with the upper corrugated peak 221, which helps to reduce the possibility of the upper corrugated peak 221 loosening. The side surface of the lower corrugated peak 222 is bonded and fixed to the upper protrusion 212. The protrusion design increases the bonding area with the lower corrugated peak 222, which helps to reduce the possibility of the lower corrugated peak 222 loosening. Furthermore, the first gap 24 provides deformation space for the corrugated peaks, thereby preserving the resilience of the U-shaped corrugated paper 22. The upper foam board 21 increases the thickness of the product, which helps to improve the puncture resistance.

[0030] In one embodiment of this utility model, such as Figures 1-2As shown, the second paperboard layer 2 further comprises a lower foam plate 23, the U-shaped corrugated paper 22 is located between the upper foam plate 21 and the lower foam plate 23, the lower foam plate 23 is provided with a lower protrusion 232 corresponding to the upper corrugation peak 221 and a lower recess 231 corresponding to the lower corrugation peak 222, the lower protrusion 232 is fixedly attached with the side surface of the upper corrugation peak 221 and forms a second gap 25 with the bottom surface of the upper corrugation peak 221, and the lower recess 231 is fixedly attached with the bottom surface of the lower corrugation peak 222. Specifically, the layered structure design of the double-layer foam plate further improves the puncture resistance of the application, the upper foam plate 21 increases the bonding area with the top surface of the U-shaped corrugated paper 22, and the lower foam plate 23 increases the bonding area with the bottom surface of the U-shaped corrugated paper 22, thereby improving the stability of the bonding of the U-shaped corrugated paper 22.

[0031] In an embodiment of the present application, as shown in Figures 1-2 The peak height of the upper corrugation peak 221 is the sum of the depth of the upper recess 211 and the height of the lower protrusion 232; and the peak height of the lower corrugation peak 222 is the sum of the height of the upper protrusion 212 and the depth of the lower recess 231. Specifically, by reasonable size design, deformation space is provided for the upper corrugation peak 221 and the lower corrugation peak 222 of the U-shaped corrugated paper 22, and the protrusion design provides support for the U-shaped corrugation to avoid the U-shaped corrugation from being unable to recover due to excessive deformation.

[0032] In an embodiment of the present application, as shown in Figures 1-2 The upper foam plate 21 and the lower foam plate 23 are both made of EPE pearl wool. The EPE pearl wool has the advantages of softness, good elasticity, environmental protection and recyclability, and when the U-shaped corrugation contacts the protrusion, the EPE pearl wool is used to achieve further buffering, which is conducive to improving the puncture resistance.

[0033] In an embodiment of the present application, as shown in Figures 1-2 Further comprising a first middle paper 26, the upper foam plate 21 is adhesively compounded with the first paperboard layer 1 through the first middle paper 26.

[0034] In an embodiment of the present application, as shown in Figures 1-2 Further comprising a second middle paper 27, the lower foam plate 23 is adhesively compounded with the second paperboard layer 2 through the second middle paper 27.

[0035] In an embodiment of the present application, as shown in Figures 1-2 The first paperboard layer 1 comprises a first A-shaped corrugated paper 11 and a face paper 12, the top of the first A-shaped corrugated paper 11 is fixedly attached with the inner surface of the face paper 12, and the bottom is fixedly attached with the top surface of the second paperboard layer 2. The first A-shaped corrugated paper 11 is used to improve the impact resistance of the corrugated paperboard surface layer.

[0036] In one embodiment of the present application, as shown in Figures 1-2 The third paperboard layer 3 comprises a second A-shaped corrugated paper 31 and a bottom paper 32, the bottom of the second A-shaped corrugated paper 31 is fixedly attached to the inner surface of the bottom paper 32, and the top is fixedly attached to the bottom surface of the second paperboard layer 2. The second A-shaped corrugated paper 31 improves the impact resistance of the bottom layer of the corrugated paperboard.

[0037] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A puncture resistant corrugated paperboard characterized by: The first paperboard layer, the second paperboard layer and the third paperboard layer are stacked from bottom to top, the second paperboard layer comprises an upper foam board and a U-shaped corrugated paper, the U-shaped corrugated paper has upper corrugation peaks and lower corrugation peaks arranged at intervals, the upper foam board is provided with upper recesses corresponding to the upper corrugation peaks and upper protrusions corresponding to the lower corrugation peaks, the upper recesses are fixedly attached to top surfaces of the upper corrugation peaks, and the upper protrusions are fixedly attached to side surfaces of the lower corrugation peaks and form first gaps with top surfaces of the lower corrugation peaks.

2. The puncture resistant corrugated paperboard of claim 1, wherein: The second paperboard layer further comprises a lower foam board, the U-shaped corrugated paper is located between the upper foam board and the lower foam board, the lower foam board is provided with lower protrusions corresponding to the upper corrugation peaks and lower recesses corresponding to the lower corrugation peaks, the lower protrusions are fixedly attached to side surfaces of the upper corrugation peaks and form second gaps with bottom surfaces of the upper corrugation peaks, and the lower recesses are fixedly attached to bottom surfaces of the lower corrugation peaks.

3. The puncture resistant corrugated paperboard of claim 2, wherein: A peak height of the upper corrugation peak is a sum of a depth of the upper recess and a height of the lower protrusion, and a peak height of the lower corrugation peak is a sum of a height of the upper protrusion and a depth of the lower recess.

4. The puncture resistant corrugated paperboard of claim 2, wherein: The upper foam board and the lower foam board are both made of EPE pearl wool.

5. The puncture resistant corrugated paperboard of claim 1, wherein: The upper foam board is adhesively compounded with the first paperboard layer through a first middle paper.

6. The puncture resistant corrugated paperboard of claim 2, wherein: The lower foam board is adhesively compounded with the second paperboard layer through a second middle paper.

7. The puncture resistant corrugated paperboard of claim 1, wherein: The first paperboard layer comprises a first A-shaped corrugated paper and a face paper, a top of the first A-shaped corrugated paper is fixedly attached to an inner surface of the face paper, and a bottom is fixedly attached to a top surface of the second paperboard layer.

8. The puncture resistant corrugated paperboard of claim 1, wherein: The third paperboard layer comprises a second A-shaped corrugated paper and a bottom paper, a bottom of the second A-shaped corrugated paper is fixedly attached to an inner surface of the bottom paper, and a top is fixedly attached to a bottom surface of the second paperboard layer.

Images