Wear-resistant crack-resistant high-toughness composite paperboard

Abstract

The utility model discloses a wear-resistant crack-resistant high-toughness composite paperboard which comprises a middle fiber reinforced interlayer, the top face of the middle fiber reinforced interlayer is connected with the bottom face of an upper supporting paperboard layer, the bottom face of the middle fiber reinforced interlayer is connected with the top face of a lower supporting paperboard layer, and a bamboo fiber sheet reinforced layer is fixedly installed on the bottom face of the lower supporting paperboard layer. An inner waterproof covering layer is pasted and fixed to the bottom face of the bamboo fiber sheet reinforcing layer, a top net covering layer is fixedly installed on the top face of the upper supporting paperboard layer, and a wear-resistant coating is arranged on the surface of the top net covering layer. According to the wear-resistant, crack-resistant and high-toughness composite paperboard, a novel structural design is adopted, on the premise that the production cost is slightly increased, the overall toughness of the paperboard is obviously improved, the water resistance and the wear resistance of the paperboard are improved, meanwhile, the surface is not prone to cracking when being repeatedly extruded and bent, and the paperboard can be stably used for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite paperboard technical field, concretely is a kind of high toughness composite paperboard of wear resistance and crack resistance. BACKGROUND

[0002] Composite paperboard is different from corrugated paperboard, is composed of multiple materials, has very high strength and impact resistance, can effectively protect the packaged goods, usually does not contain harmful substances, and can be recycled, meet environmental protection requirements, while composite paperboard has lighter mass, and better durability, is suitable for various packaging needs.

[0003] The overall structure of existing composite paperboard is simple, is only made by multiple layers of paper or other materials through pasting and compounding, and the overall toughness is insufficient, cracks are easily generated when bending under stress during use, and it is also more easily worn than corrugated paperboard.For the above problems, it is urgent to make innovative design on the basis of original composite paperboard. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of high toughness composite paperboard of wear resistance and crack resistance to solve the problem that the overall structure of existing composite paperboard is simple in the above background art, is only made by multiple layers of paper or other materials through pasting and compounding, and the overall toughness is insufficient, cracks are easily generated when bending under stress during use, and it is also more easily worn than corrugated paperboard.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high toughness composite paperboard of wear resistance and crack resistance, including middle fiber reinforced interlayer, the top surface of middle fiber reinforced interlayer is connected with the bottom surface of upper support paperboard layer, the bottom surface of middle fiber reinforced interlayer is connected with the top surface of lower support paperboard layer, the bottom surface of lower support paperboard layer is fixedly installed with bamboo fiber sheet reinforcing layer, the bottom surface of bamboo fiber sheet reinforcing layer is pasted with inner waterproof coating, the top surface of upper support paperboard layer is fixedly installed with top net coating, and the surface of top net coating is provided with wear-resistant coating.

[0006] Preferably, the upper support paperboard layer and the lower support paperboard layer are symmetrically distributed about the center of the middle fiber reinforced interlayer, the thickness of the upper support paperboard layer is the same as that of the lower support paperboard layer, and the thickness of the middle fiber reinforced interlayer is less than that of the upper support paperboard layer.

[0007] Preferably, the thickness of the bamboo fiber sheet reinforcing layer is greater than that of the middle fiber reinforced interlayer, and the spacing of the bamboo fiber sheets in the bamboo fiber sheet reinforcing layer is not greater than the width of the bamboo fiber sheets.

[0008] Preferably, the thickness of the inner waterproof coating is less than that of the bamboo fiber sheet reinforcing layer, and the thickness of the inner waterproof coating is greater than half the thickness of the middle fiber reinforced interlayer.

[0009] Preferably, the top net covering layer is composed of polypropylene anti-tension fiber interlacing, and the thickness of the top net covering layer is not greater than the thickness of the inner waterproof covering layer.

[0010] Preferably, the thickness of the wear-resistant coating is greater than the thickness of the top net covering layer, the material of the wear-resistant coating is resin, and the wear-resistant coating is densely provided with penetrating holes.

[0011] Compared with the prior art, the paperboard has the advantages that: the novel structure design is adopted, the overall toughness of the paperboard is obviously increased under the premise of less increase in production cost, the waterproofness and wear resistance of the paperboard are improved, the surface is not prone to cracking when repeatedly extruded and bent, and the paperboard can be stably used for a long time.

[0012] 1. The middle fiber reinforced interlayer and the bamboo fiber sheet reinforcing layer are combined with the upper support paperboard layer and the lower support paperboard layer which are symmetrically distributed relative to the middle fiber reinforced interlayer, so that the overall toughness of the composite paperboard is increased, and the overall structural strength of the composite paperboard is improved.

[0013] 2. The inner waterproof covering layer, the top net covering layer and the wear-resistant coating increase the protection of the two sides of the upper support paperboard layer and the lower support paperboard layer, so that the paperboard is prevented from being damp and the surface is prevented from being excessively worn, and the wear-resistant coating which is densely provided with penetrating holes is used to prevent cracks from being generated on the surface of the paperboard during bending. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a cross-sectional structure schematic view of the utility model;

[0015] Fig. 2 It is a bamboo fiber sheet reinforcing layer structure schematic view of the utility model;

[0016] Fig. 3 It is a top net covering layer structure schematic view of the utility model.

[0017] In the drawing: 1, middle fiber reinforced interlayer; 2, upper support paperboard layer; 3, lower support paperboard layer; 4, bamboo fiber sheet reinforcing layer; 5, inner waterproof covering layer; 6, top net covering layer; 7, wear-resistant coating. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figs. 1-3The utility model provides a technical scheme: a kind of high toughness composite paperboard of wear resistance and crack resistance, including middle fiber reinforced interlayer 1, upper support paperboard layer 2, lower support paperboard layer 3, bamboo fiber sheet reinforcing layer 4, inner waterproof coating 5, top net coating 6 and wear-resistant coating 7, the top surface of middle fiber reinforced interlayer 1 is connected with the bottom surface of upper support paperboard layer 2, the bottom surface of middle fiber reinforced interlayer 1 is connected with the top surface of lower support paperboard layer 3, and bamboo fiber sheet reinforcing layer 4 is fixedly installed on the bottom surface of lower support paperboard layer 3, and inner waterproof coating 5 is pasted and fixed on the bottom surface of bamboo fiber sheet reinforcing layer 4, top net coating 6 is fixedly installed on the top surface of upper support paperboard layer 2, and wear-resistant coating 7 is provided on the surface of top net coating 6.

[0020] The upper support paperboard layer 2 and the lower support paperboard layer 3 of the example are symmetrically distributed about the center of the middle fiber reinforced interlayer 1, and the thickness of the upper support paperboard layer 2 is the same as that of the lower support paperboard layer 3, and the thickness of the middle fiber reinforced interlayer 1 is less than that of the upper support paperboard layer 2. The above structural design makes the overall structural strength of the paperboard sufficient and has strong toughness.

[0021] The thickness of the bamboo fiber sheet reinforcing layer 4 is greater than that of the middle fiber reinforced interlayer 1, and the spacing of the bamboo fiber sheets in the bamboo fiber sheet reinforcing layer 4 is not greater than the width of the bamboo fiber sheets. The above structural design further improves the toughness of the paperboard, and the materials used are environmentally friendly and renewable.

[0022] The thickness of the inner waterproof coating 5 is less than that of the bamboo fiber sheet reinforcing layer 4, and the thickness of the inner waterproof coating 5 is greater than half the thickness of the middle fiber reinforced interlayer 1. The above structural design can avoid the moisture of the paperboard structure and ensure the stable use of the paperboard for a long time.

[0023] The top net coating 6 is composed of polypropylene anti-tension fibers, and the thickness of the top net coating 6 is not greater than that of the inner waterproof coating 5. The above structural design can protect the surface of the paperboard and improve the wear resistance.

[0024] The thickness of the wear-resistant coating 7 is greater than that of the top net coating 6, and the material of the wear-resistant coating 7 is resin. The wear-resistant coating 7 is densely provided with through holes. The above structural design releases the surface stress of the paperboard when it is bent and avoids the easy cracking of the surface of the paperboard.

[0025] Working principle: the core layer structure composed of the middle fiber reinforced interlayer 1, the upper support paperboard layer 2 and the lower support paperboard layer 3 has sufficient structural strength, cooperates with the bamboo fiber sheet reinforcing layer 4, greatly improves the overall toughness of the paperboard structure, avoids the entry of water vapor through the inner waterproof coating 5, improves the wear resistance of the outer surface of the paperboard through the top net coating 6 and the wear-resistant coating 7, and releases the surface stress of the paperboard when it is bent through the through holes on the wear-resistant coating 7, avoiding the easy cracking of the surface of the paperboard. This is the working principle of the high toughness composite paperboard of wear resistance and crack resistance.

[0026] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-toughness, wear-resistant, crack-resistant composite paperboard comprising a central fiber-reinforced interlayer (1), characterized in that: The middle fiber reinforced interlayer (1) top surface is connected with the upper support paperboard layer (2) bottom surface, the middle fiber reinforced interlayer (1) bottom surface is connected with the lower support paperboard layer (3) top surface, the lower support paperboard layer (3) bottom surface is fixedly installed with the bamboo fiber sheet reinforcing layer (4), the bamboo fiber sheet reinforcing layer (4) bottom surface is pasted and fixed with the inner waterproof covering layer (5), the upper support paperboard layer (2) top surface is fixedly installed with the top net covering layer (6), and the top net covering layer (6) surface is provided with the wear-resistant coating (7).

2. A high toughness, wear and tear resistant, crease resistant paperboard as claimed in claim 1, wherein: The upper support paperboard layer (2) and the lower support paperboard layer (3) are symmetrically distributed about the center of the middle fiber reinforced interlayer (1), the upper support paperboard layer (2) and the lower support paperboard layer (3) have the same thickness, and the thickness of the middle fiber reinforced interlayer (1) is less than the thickness of the upper support paperboard layer (2).

3. A high toughness, wear and tear resistant, crease resistant paperboard composite according to claim 1, wherein: The thickness of the bamboo fiber sheet reinforcing layer (4) is greater than the thickness of the middle fiber reinforced interlayer (1), and the spacing of the bamboo fiber sheets in the bamboo fiber sheet reinforcing layer (4) is not greater than the width of the bamboo fiber sheets.

4. A high toughness, wear and tear resistant, crease resistant paperboard composite according to claim 1, wherein: The thickness of the inner waterproof covering layer (5) is less than the thickness of the bamboo fiber sheet reinforcing layer (4), and the thickness of the inner waterproof covering layer (5) is greater than half the thickness of the middle fiber reinforced interlayer (1).

5. A high toughness, wear and tear resistant, crease resistant paperboard composite according to claim 1, wherein: The top net covering layer (6) is composed of polypropylene tensile fibers, and the thickness of the top net covering layer (6) is not greater than the thickness of the inner waterproof covering layer (5).

6. A high toughness, wear and tear resistant, crease resistant paperboard composite according to claim 1, wherein: The thickness of the wear-resistant coating (7) is greater than the thickness of the top net covering layer (6), the material of the wear-resistant coating (7) is resin, and a plurality of through holes are densely arranged on the wear-resistant coating (7).

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