Degradable corrugated board

Abstract

The utility model belongs to the technical field of corrugated board application, and particularly discloses a degradable corrugated board. Comprising an outer paper layer, a plurality of outer paper layer viscose blocks, an outer core paper layer, an inner paper layer, a plurality of inner paper layer viscose blocks, an inner core paper layer, a first middle paper layer, a plurality of first middle paper layer through grooves, a middle viscose layer, a second middle paper layer, a plurality of second middle paper layer through grooves, a plurality of middle supporting parts, a biodegradable coating and the like. Compared with the prior art, the degradable corrugated board has the advantages that the overall structural design is combined with degradable boric acid cross-linked polyvinyl alcohol (PVA), on one hand, the degradable corrugated board is high in strength and durable, on the other hand, the degradable corrugated board is degradable, and the environment-friendly and pollution-free use requirements are met; and 2, the outer paper layer viscose block, the inner paper layer viscose block and the middle viscose layer are respectively made of degradable viscose, so that the degradability of the corrugated board is also realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrugated carton applications, and specifically relates to degradable corrugated board. Background Art

[0002] Corrugated board has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, convenient storage and handling, etc. It can be used as packaging for food or digital products, and is relatively environmentally friendly and widely used.

[0003] Plastic pollution is an urgent challenge faced globally. Especially packaging, which accounts for 30 - 50% of the total plastic consumption. Although paper packaging is environmentally friendly, it lacks key functions such as moisture resistance and strength. Traditional coating materials have exacerbated plastic pollution, prompting the need for sustainable alternatives.

[0004] Polyethylene (PE) and ethylene - vinyl alcohol (EVOH) are usually used as coating materials to improve the low barrier properties of paper packaging. However, these substances do not decompose when treated in the natural environment and will exacerbate micro - plastic pollution. In response to this problem, packaging materials made from bio - based substances and biodegradable plastics have been developed, but in most cases, as the packaging performance improves, the biodegradability will rapidly decrease.

[0005] How to design a corrugated board with high strength and coated with biodegradable plastic to improve the biodegradability and barrier properties of corrugated board boxes is what needs to be studied and solved currently.

[0006] Based on the above problems, the utility model provides a degradable corrugated board. Content of the Utility Model

[0007] Purpose of the Utility Model: The purpose of the utility model is to provide a degradable corrugated board, which solves the pollution problems existing when using the packaging boxes made of current corrugated board, ensures the packaging performance, and at the same time maintains sustainability to solve the shortcomings of the packaging boxes made of corrugated board.

[0008] Technical solution: The degradable corrugated board provided by the present utility model includes an outer paper layer, several outer paper layer adhesive blocks, an outer core paper layer, an inner paper layer, several inner paper layer adhesive blocks, an inner core paper layer, a first intermediate paper layer, several first intermediate paper layer through slots, an intermediate adhesive layer, a second intermediate paper layer, several second intermediate paper layer through slots, several intermediate support parts, and a biodegradable coating; the several outer paper layer adhesive blocks and several inner paper layer adhesive blocks are respectively evenly coated on the opposite surfaces of the outer paper layer and the inner paper layer, the outer core paper layer and the inner core paper layer are respectively fixed on the opposite surfaces of the outer paper layer and the inner paper layer through the outer paper layer adhesive blocks and the inner paper layer adhesive blocks, the first intermediate paper layer and the second intermediate paper layer are fixed through the intermediate adhesive layer, and the several first intermediate paper layer through slots and the several second intermediate paper layer through slots correspond one by one. The intermediate support parts are respectively arranged on the first intermediate paper layer and the second intermediate paper layer through the first intermediate paper layer through slots and the second intermediate paper layer through slots, and both ends are respectively fixed to the outer core paper layer and the inner core paper layer. The biodegradable coating is respectively coated on the surfaces of the intermediate support parts.

[0009] In the technical solution of the present utility model, the degradable corrugated board further includes a first arc-shaped limiting part and a second arc-shaped limiting part which are respectively arranged at both end faces of the intermediate support part and are respectively fixed to the inner wall of the outer core paper layer and the inner core paper layer.

[0010] In the technical solution of the present utility model, the biodegradable coating includes but is not limited to boric acid cross-linked polyvinyl alcohol (PVA).

[0011] In the technical solution of the present utility model, the outer paper layer adhesive blocks, the inner paper layer adhesive blocks, and the intermediate adhesive layer include but are not limited to polyester (PET) biodegradable binders and polyurethane (PU) biodegradable binders.

[0012] In the technical solution of the present utility model, the outer core paper layer and the inner core paper layer are respectively arranged in a wavy structure with the same size.

[0013] Compared with the prior art, the beneficial effects of the degradable corrugated board of the present utility model are as follows: 1. The overall structural design combines the biodegradable boric acid cross-linked polyvinyl alcohol (PVA). On the one hand, it has high strength and durability, and on the other hand, it is biodegradable, meeting the requirements of environmental protection and pollution-free use; 2. The outer paper layer adhesive blocks, the inner paper layer adhesive blocks, and the intermediate adhesive layer respectively adopt biodegradable adhesives, which also realizes the degradability of the corrugated board. Brief description of the drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is the front view structural schematic diagram of the degradable corrugated board of the present utility model;

[0016] Figure 2 It is the front view split structural schematic diagram of the degradable corrugated board of the present utility model;

[0017] Among them, the drawing serial numbers are as follows: 100 - outer paper layer, 101 - outer paper layer adhesive block, 102 - outer core paper layer, 103 - inner paper layer, 104 - inner paper layer adhesive block, 105 - inner core paper layer, 106 - first intermediate paper layer, 107 - first intermediate paper layer through slot, 108 - intermediate adhesive layer, 109 - second intermediate paper layer, 110 - second intermediate paper layer through slot, 111 - intermediate support part, 112 - biodegradable coating, 113 - first arc-shaped limiting part, 114 - second arc-shaped limiting part, 115 - first adhesive layer, 116 - second adhesive layer. Specific implementation manners

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "rear", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] Embodiment 1

[0021] Such as Figure 1 And Figure 2The degradable corrugated board shown includes an outer paper layer 100, several outer paper layer adhesive blocks 101, an outer core paper layer 102, an inner paper layer 103, several inner paper layer adhesive blocks 104, an inner core paper layer 105, a first intermediate paper layer 106, several first intermediate paper layer through slots 107, an intermediate adhesive layer 108, a second intermediate paper layer 109, several second intermediate paper layer through slots 110, several intermediate support parts 111, and a biodegradable coating 112;

[0022] Several outer paper layer adhesive blocks 101 and several inner paper layer adhesive blocks 104 are evenly coated on the opposite surfaces of the outer paper layer 100 and the inner paper layer 103 respectively.

[0023] The outer core paper layer 102 and the inner core paper layer 105 are respectively fixed to the opposite surfaces of the outer paper layer 100 and the inner paper 103 through the outer paper layer adhesive blocks 101 and the inner paper layer adhesive blocks 104.

[0024] The first intermediate paper layer 106 and the second intermediate paper layer 109 are fixed to each other through the intermediate adhesive layer 108, and several first intermediate paper layer through slots 107 and several second intermediate paper layer through slots 110 correspond to each other one by one.

[0025] The intermediate support parts 111 are respectively arranged on the first intermediate paper layer 106 and the second intermediate paper layer 109 through the first intermediate paper layer through slots 107 and the second intermediate paper layer through slots 110, and both ends are respectively fixed to the outer core paper layer 102 and the inner core paper layer 105.

[0026] The biodegradable coating 112 is respectively coated on the surfaces of the intermediate support parts 111.

[0027] In the above design structure, the biodegradable coating 112 changes the physical and chemical properties of the overall corrugated board. That is, the biodegradable coating 112 can enhance the hydrophilicity and hygroscopicity of the corrugated board, making it easier to be decomposed by microorganisms. At the same time, it can also provide a place for microorganisms to attach and reproduce, accelerating the decomposition speed of the packaging box made of the corrugated board.

[0028] Embodiment 2

[0029] On the basis of Embodiment 1, the degradable corrugated board further includes a first arc-shaped limiting part 113 and a second arc-shaped limiting part 114 which are respectively arranged at both end faces of the intermediate support part 111 and are respectively fixed to the inner walls of the outer core paper layer 102 and the inner core paper layer 105.

[0030] Among them, the middle support part 111, the first middle paper layer through groove 107, and the second middle paper layer through groove 110 are respectively set as circular structures or polygonal structures that are used in cooperation. The first arc-shaped limiting part 113 and the second arc-shaped limiting part 114 are respectively in close contact with the inner walls of the outer core paper layer 102 and the inner core paper layer 105, enhancing the strength of the outer paper layer 100, the outer core paper layer 102, the inner paper layer 103, and the inner core paper layer 105, realizing rapid reset and no deformation after bearing pressure, and ensuring the safety of the packaged items.

[0031] In addition, preferably, the biodegradable coating 112 includes, but is not limited to, boric acid cross-linked polyvinyl alcohol (PVA), and has good biodegradability.

[0032] In addition, preferably, the outer paper layer adhesive block 101, the inner paper layer adhesive block 104, and the middle adhesive layer 108 include, but are not limited to, polyester (PET) biodegradable binders and polyurethane (PU) biodegradable binders, and also have good biodegradability while having good adhesiveness.

[0033] In addition, preferably, the outer core paper layer 102 and the inner core paper layer 105 are respectively set as wavy structures with the same size, and have a certain reset function after bearing pressure and a certain buffering function during use.

[0034] Embodiment 3

[0035] In addition, in order to improve the degradability of the corrugated board produced as a whole, a biodegradable coating 112 can be evenly coated on the surfaces of the outer paper layer 100, the outer core paper layer 102, the inner paper layer 103, the inner core paper layer 105, the first middle paper layer 106, the second middle paper layer 109, the first arc-shaped limiting part 113, and the second arc-shaped limiting part 114 (not marked in the figure, which does not affect the disclosure of the technical solution of the present application).

[0036] The working principle or structural principle of the biodegradable corrugated board of this structure:

[0037] (1) Coat the biodegradable coating 112 on the surface of the middle support part 111, coat several outer paper layer adhesive blocks 101 and several inner paper layer adhesive blocks 104 on the opposite surfaces of the outer paper layer 100 and the inner paper layer 103 respectively, and then bond the outer core paper layer 102 and the inner core paper layer 105 to the opposite surfaces of the outer paper layer 100 and the inner paper 103 respectively through the outer paper layer adhesive blocks 101 and the inner paper layer adhesive blocks 104 (several outer paper layer adhesive blocks 101 and several inner paper layer adhesive blocks 104 are respectively arranged horizontally in a straight line on the opposite surfaces of the outer paper layer 100 and the inner paper layer 103);

[0038] (2) The first intermediate paper layer 106 and the second intermediate paper layer 109 are fixed by the intermediate adhesive layer 108, and then the intermediate support portion 111, the first arc-shaped limiting portion 113 and the second arc-shaped limiting portion 114 are fixed on the first intermediate paper layer 106 and the second intermediate paper layer 109 through the first intermediate paper layer through groove 107 and the second intermediate paper layer through groove 110 (the second arc-shaped limiting portion 114 at one end of the intermediate support portion 111 is horizontally inserted into the first intermediate paper layer through groove 107 and the second intermediate paper layer through groove 110);

[0039] (3) The opposite surfaces of the outer core paper layer 102 and the inner core paper layer 105 are respectively coated with the first adhesive layer 115 and the second adhesive layer 116 (see Figure 1 , and degradable adhesives are respectively used). At this time, the first arc-shaped limiting portion 113 and the second arc-shaped limiting portion 114 are respectively fixed to the inner walls of the opposite surfaces of the outer core paper layer 102 and the inner core paper layer 105 through the first adhesive layer 115 and the second adhesive layer 116.

[0040] It should be noted that in this article, terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. Degradable corrugated cardboard, characterized in that: It includes an outer paper layer (100), several outer paper layer adhesive blocks (101), an outer core paper layer (102), an inner paper layer (103), several inner paper layer adhesive blocks (104), an inner core paper layer (105), a first intermediate paper layer (106), several first intermediate paper layer through slots (107), an intermediate adhesive layer (108), a second intermediate paper layer (109), several second intermediate paper layer through slots (110), several intermediate support parts (111), and a biodegradable coating (112); The several outer paper layer adhesive blocks (101) and several inner paper layer adhesive blocks (104) are respectively evenly coated on the opposite surfaces of the outer paper layer (100) and the inner paper layer (103); The outer core paper layer (102) and the inner core paper layer (105) are respectively fixed to the opposite surfaces of the outer paper layer (100) and the inner paper layer (103) through the outer paper layer adhesive blocks (101) and the inner paper layer adhesive blocks (104); The first intermediate paper layer (106) and the second intermediate paper layer (109) are fixed through the intermediate adhesive layer (108), and several first intermediate paper layer through slots (107) and several second intermediate paper layer through slots (110) correspond to each other one by one; The intermediate support parts (111) are respectively arranged on the first intermediate paper layer (106) and the second intermediate paper layer (109) through the first intermediate paper layer through slots (107) and the second intermediate paper layer through slots (110), and both ends are respectively fixed to the outer core paper layer (102) and the inner core paper layer (105); The biodegradable coating (112) is respectively coated on the surfaces of the intermediate support parts (111).

2. The degradable corrugated cardboard according to claim 1, characterized in that: The biodegradable corrugated board further includes a first arc-shaped limiting part (113) and a second arc-shaped limiting part (114) which are respectively arranged at both end faces of the intermediate support part (111) and are respectively fixed to the inner walls of the outer core paper layer (102) and the inner core paper layer (105).

3. The degradable corrugated cardboard according to claim 1, wherein: The biodegradable coating (112) includes but is not limited to boric acid cross-linked polyvinyl alcohol (PVA).

4. The degradable corrugated cardboard according to claim 1, wherein: The outer paper layer adhesive blocks (101), the inner paper layer adhesive blocks (104), and the intermediate adhesive layer (108) include but are not limited to polyester (PET) biodegradable binders and polyurethane (PU) biodegradable binders.

5. The degradable corrugated cardboard according to claim 1 or 2, characterized in that: The outer core paper layer (102) and the inner core paper layer (105) are respectively arranged in a wavy structure with the same size.

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