Scratch and crush resistant paperboard and packaging box

Abstract

The utility model discloses a kind of scratch-resistant and pressure-resistant paperboard, by face paper layer, corrugated paper layer and inner paper layer are pasted on tile line, wherein inner paper layer is compounded with scratch-resistant layer before pasting, the scratch-resistant layer has release layer, shower membrane layer, reinforcing layer and wear layer in turn from bottom to top and laminated.This utility model is compounded with scratch-resistant layer in advance on the outer surface of inner paper layer, then pasted into corrugated paperboard through tile line directly, relative to the production process that traditional corrugated paperboard is pasted with a layer of scratch-resistant film on the surface of forming, it has faster production efficiency, while the present application significantly improves the comprehensive performance of corrugated paperboard by multilayer composite structure, increases the scratch-resistant and pressure-resistant carrying capacity of packaging box.

Description

Technical Field

[0001] This utility model relates to the field of corrugated packaging technology, specifically to a scratch-resistant and pressure-resistant cardboard and packaging box. Background Technology

[0002] Corrugated packaging is a widely used form of packaging for the transportation, storage, and display of goods. Its core characteristics are its lightweight, durability, environmental friendliness, and versatility. This packaging material is made of corrugated cardboard and typically includes an inner liner and an outer layer, with a corrugated structure sandwiched in between to provide additional cushioning and protection.

[0003] When storing and transporting items such as compressor components, corrugated packaging uses a lamination process on the inside of the cardboard to prevent damage to the inner surface of the corrugated box from the internal compressor components, thus affecting the basic performance of the box. This process increases the scratch resistance and load-bearing capacity of the packaging. However, the lamination layer is difficult to peel off when recycling corrugated cardboard, which is not conducive to recycling. At the same time, a single film layer can only increase its scratch resistance by increasing its thickness, which is even more detrimental to environmental protection.

[0004] Therefore, it is necessary to develop a composite corrugated cardboard that is easy to recycle, easy to peel, and more scratch-resistant to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this utility model is to provide a scratch-resistant and pressure-resistant cardboard and a packaging box with scratch-resistant and pressure-resistant cardboard, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] A scratch-resistant and pressure-resistant paperboard is formed by laminating a face paper layer, a corrugated paper layer and a liner paper layer on a corrugated line. The liner paper layer is laminated with a scratch-resistant layer before lamination. The scratch-resistant layer consists of a release layer, a coating layer, a reinforcing layer and a wear-resistant layer stacked sequentially from bottom to top.

[0008] Furthermore, the release layer is specifically one of water-based silicone oil or wax coating, with a coating thickness of 1-3 μm.

[0009] Furthermore, the coating layer is a PLA / PBAT blend coating layer with a thickness of 10-20 μm.

[0010] Furthermore, the reinforcing layer is a directional fiber reinforced coating with a coating thickness of 3-7 μm.

[0011] Furthermore, the wear-resistant layer is a high wear-resistant nano-silica coating with a coating thickness of 1-4 μm.

[0012] The present invention also discloses a packaging box with scratch-resistant and pressure-resistant cardboard, which is made by die-cutting, creasing, folding and gluing the scratch-resistant and pressure-resistant cardboard of the present invention, wherein the scratch-resistant layer of the scratch-resistant and pressure-resistant cardboard is inside the packaging box.

[0013] The beneficial effects of this utility model are:

[0014] This invention pre-laminates a scratch-resistant layer on the outer surface of the inner linerboard before directly laminating it into corrugated cardboard using a corrugating line. This process offers faster production efficiency compared to the traditional method of laminating a scratch-resistant film onto the surface of the formed corrugated cardboard. Furthermore, the multi-layered composite structure significantly improves the overall performance of the corrugated cardboard, increasing the scratch resistance and compressive strength of the packaging boxes. In addition, the release layer facilitates the peeling of the coating layers from the linerboard surface, making the corrugated cardboard easier to recycle. The PLA / PBAT blended coating layer provides biodegradable barrier properties, the reinforcing layer enhances longitudinal tensile strength and ring crush strength, and the surface abrasion-resistant layer forms a dense protective network, improving abrasion resistance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the layer structure of Embodiment 1 of this utility model.

[0016] In the diagram: 1. Face paper layer, 2. Corrugated paper layer, 3. Inner paper layer, 4. Scratch-resistant layer, 41. Release layer, 42. Coating layer, 43. Reinforcing layer, 44. Abrasion-resistant layer. Detailed Implementation

[0017] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0018] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0022] like Figure 1 As shown, this embodiment discloses a scratch-resistant and pressure-resistant paperboard, which is formed by laminating a face paper layer, a corrugated paper layer and a liner paper layer on a corrugated line. This embodiment uses a three-layer corrugated paperboard production process, so the paperboard includes a face paper layer 1, a corrugated paper layer 2 and a liner paper layer 3. The liner paper layer 3 is laminated with a scratch-resistant layer 4 before lamination. The scratch-resistant layer 4 is composed of a release layer 41, a coating layer 42, a reinforcing layer 43 and a wear-resistant layer 44 stacked sequentially from bottom to top.

[0023] In this embodiment, the release layer 41 is specifically water-based silicone oil, which is uniformly coated on one side of the inner paper layer 3 using a gravure coating process. The coating thickness is 2μm. The release layer 41 is added to facilitate the peeling of the coating layer 42 and other materials from the surface of the inner paper layer 3, making it easier for the corrugated cardboard to be recycled and reused.

[0024] The coating layer 42 is a PLA / PBAT blend coating, with PLA:PBAT = 55:45-60:40, mainly to balance strength and toughness, and 7% compatibilizer is added. During coating, the extrusion section temperature is gradually increased from 150-160℃ in zone 1 to 170-180℃ in zone 4, and the die head temperature is controlled at 165-175℃. The coating is applied to the upper surface of the release layer 41, and the coating layer 42 has a thickness of 10μm.

[0025] The reinforcing layer 43 is a directional fiber reinforced coating, which is uniformly coated on the upper surface of the coating layer 42 using a gravure coating process. The coating thickness is 4μm, which can improve the longitudinal tensile strength by about 30%.

[0026] The wear-resistant layer 44 is a high wear-resistant nano-silica coating, which is uniformly coated on the upper surface of the reinforcing layer 43 using a gravure coating process, and the coating thickness is 2μm.

[0027] This invention also discloses a packaging box with scratch-resistant and pressure-resistant cardboard. The cardboard is formed by die-cutting, creasing, folding, and bonding, with the scratch-resistant layer located inside the packaging box. Adding a scratch-resistant layer inside the packaging box prevents damage to the inner surface of the box from contents such as compressor components during storage and transportation, thus affecting the basic performance of the packaging box. By adding a scratch-resistant layer to the inside of the cardboard, the scratch resistance and pressure-bearing capacity of the packaging are increased.

[0028] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A scratch-resistant and pressure-resistant cardboard, comprising an inner paper layer, a corrugated paper layer, and a facing paper layer laminated on a corrugated line, characterized in that, The inner paper layer is laminated with a scratch-resistant layer before lamination. The scratch-resistant layer consists of a release layer, a coating layer, a reinforcing layer, and a wear-resistant layer stacked sequentially from bottom to top.

2. The scratch-resistant and compression-resistant paperboard according to claim 1, characterized in that... The release layer is specifically one of water-based silicone oil or wax coating, with a coating thickness of 1-3 μm.

3. The scratch-resistant and compression-resistant paperboard according to claim 1, characterized in that... The coating layer is a PLA / PBAT blend coating with a thickness of 10-20 μm.

4. The scratch-resistant and compression-resistant paperboard according to claim 1, characterized in that... The reinforcing layer is a directional fiber reinforced coating with a thickness of 3-7 μm.

5. The scratch-resistant and compression-resistant paperboard according to claim 1, characterized in that... The wear-resistant layer is a high wear-resistant nano-silica coating with a thickness of 1-4 μm.

6. A packaging box with scratch-resistant and compression-resistant cardboard, characterized in that, The scratch-resistant and pressure-resistant cardboard as described in any one of claims 1-5 is folded and glued after die-cutting and creasing, wherein the scratch-resistant layer of the scratch-resistant and pressure-resistant cardboard is inside the packaging box.

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