Moisture-proof composite white cardboard

Abstract

The utility model relates to the technical field of ivory boards, and discloses a moisture-proof composite ivory board which comprises a moisture-proof inner core, a fiber layer is arranged on the outer surface of the moisture-proof inner core, a flame-retardant layer is arranged on the outer surface of the fiber layer, a reinforcing layer is arranged on the outer surface of the flame-retardant layer through a reinforcing assembly, raw paper is arranged on the outer surface of the reinforcing layer, and the moisture-proof composite ivory board is arranged on the outer surface of the raw paper. A waterproof layer is arranged on the outer surface of the body paper; the reinforcing assembly comprises a tough layer located on the outer surface of the flame-retardant layer, a reinforcing layer is arranged on the outer surface of the tough layer, and the reinforcing layer is located inside the body paper. According to the composite white cardboard disclosed by the utility model, excellent waterproof performance provided by the waterproof layer is matched with the waterproof performance of the damp-proof inner core and the reinforcing layer, so that the damp-proof capability of the composite white cardboard is greatly reduced, the white cardboard is prevented from being softened due to damp and losing toughness, the durability and the storage time of the white cardboard are greatly prolonged, and the occurrence probability of curling of the white cardboard is reduced; and the service life of the white cardboard is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of white cardboard, in particular to a moisture-proof composite white cardboard. Background Art

[0002] White cardboard is a thicker, firmer white cardboard made of pure high-quality wood pulp. It is calendered or embossed and is mainly used for printing substrates for packaging and decoration. It is divided into three grades: A, B, and C, with a basis weight of 210-400g / ㎡. It is mainly used for printing business cards, invitations, certificates, trademarks, packaging and decoration, etc.

[0003] Existing white cardboard is not waterproof and the strength of the cardboard is not high. Therefore, the white cardboard is easily moldy, discolored, damaged and torn due to moisture after transportation and use, or softened and rotted due to moisture after long-term storage, which greatly reduces the service life of the white cardboard. In this regard, to address this technical problem, the present application proposes a moisture-proof composite white cardboard. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a moisture-proof composite white card paper, aiming to improve the problem in the prior art that the white card paper has poor moisture resistance, resulting in easy mold, softening and even rot.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A moisture-proof composite white cardboard comprises a moisture-proof inner core, the outer surface of the moisture-proof inner core is provided with a fiber layer, the outer surface of the fiber layer is provided with a flame-retardant layer, the outer surface of the flame-retardant layer is provided with a reinforcement layer through a reinforcing component, the outer surface of the reinforcement layer is provided with base paper, and the outer surface of the base paper is provided with a waterproof layer.

[0007] Furthermore, the reinforcing component comprises a strong and tough layer located on the outer surface of the flame retardant layer, the outer surface of the strong and tough layer is provided with a reinforcement layer, and the reinforcement layer is located on the inner surface of the base paper.

[0008] Furthermore, the tough layer is prepared by using polyester resin as raw material, and the reinforcement layer is prepared by using polyvinyl chloride as raw material.

[0009] Furthermore, the moisture-proof inner core is prepared by using polypropylene as raw material.

[0010] Furthermore, the fiber layer is prepared by using pine wood pulp as raw material.

[0011] Furthermore, the flame retardant layer is prepared by fibers soaked in a flame retardant.

[0012] Furthermore, the waterproof layer is prepared using polyurethane as raw material.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the excellent waterproof performance provided by the waterproof layer, combined with the waterproofness of the moisture-proof inner core and the reinforcement layer, greatly reduces the moisture-proof ability of the composite white card paper, prevents the white card paper from softening and losing toughness due to moisture, and greatly prolongs the durability and storage time of the white card paper.

[0015] 2. In the utility model, the toughening layer, the reinforcement layer and the fiber layer made of long-fiber wood pulp can provide the white card paper with good durability and hardness, higher wear resistance and tensile strength as well as bonding and tensile strength, thereby reducing the probability of curling of the white card paper and extending the service life of the white card paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the cross-sectional structure of a moisture-proof composite white card paper.

[0017] Legend:

[0018] 1. Waterproof layer; 2. Base paper; 3. Reinforcement layer; 4. Strong layer; 5. Flame retardant layer; 6. Fiber layer; 7. Moisture-proof inner core. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1 The utility model provides an embodiment: a moisture-proof composite white cardboard, comprising a moisture-proof inner core 7, a fiber layer 6 is arranged on the outer surface of the moisture-proof inner core 7, a flame-retardant layer 5 is arranged on the outer surface of the fiber layer 6, a strong layer 4 located on the outer surface of the flame-retardant layer 5 and a reinforcement layer 3 arranged on the outer surface of the strong layer 4 together form a reinforcement component, the reinforcement layer 3 is located on the inner side of the base paper 2, the base paper 2 is arranged on the outer surface of the reinforcement layer 3, and the outer surface of the base paper 2 is provided with a waterproof layer 1;

[0021] Specifically, the white cardboard is formed by stacking and pressing multiple layers of materials including base paper 2, reinforcement layer 3, tough layer 4, flame retardant layer 5, fiber layer 6, and moisture-proof inner core 7 under high pressure, and finally the waterproof layer 1 is coated on the outermost surface of the white cardboard.

[0022] The tough layer 4 is made of polyester resin as a raw material, and the reinforcement layer 3 is made of polyvinyl chloride as a raw material. The polyester resin has high wear resistance and tensile resistance, thereby improving the overall toughness and tensile resistance of the white cardboard. The polyvinyl chloride provides good durability and hardness for the white cardboard, and the waterproofness of the polyvinyl chloride helps the white cardboard reduce the influence of moisture, reduces the probability of curling of the white cardboard, and prolongs the service life of the white cardboard.

[0023] The moisture-proof inner core 7 is made of polypropylene as a raw material. Polypropylene has a relatively closed molecular structure, which can effectively prevent the penetration of water, so that polypropylene has good water resistance and is not easily eroded and penetrated by water, thereby providing good moisture resistance;

[0024] The fiber layer 6 is made of pine pulp as raw material. The fibers of pine pulp, a coniferous tree, are relatively long. This long-fiber pulp has high strength and toughness for paper and is suitable for applications that require greater tensile and tearing forces. The fibers of the long-fiber pulp are more closely connected to each other, and the structure of the paper is more uniform and stable, providing better bonding and tensile resistance for white cardboard.

[0025] The flame retardant layer 5 is prepared by soaking the fiber in the flame retardant. The flame retardant layer 5 composed of the fiber soaked in the flame retardant can reduce the impact of high temperature weather on the white cardboard, avoid accidents such as spontaneous combustion of the white cardboard under high temperature conditions, and improve its safety;

[0026] The waterproof layer 1 is made of polyurethane as a raw material. The polyurethane has a highly cross-linked molecular structure, forming a dense network structure, which effectively prevents water penetration. This makes the polyurethane perform well in dealing with water erosion and has excellent sealing properties. The waterproof layer 1 can provide excellent waterproof performance for white cardboard, and cooperate with the waterproof properties of the moisture-proof inner core 7 and the reinforcement layer 3 to greatly reduce the moisture-proof ability of the composite white cardboard, thereby preventing the white cardboard from softening and losing toughness due to moisture.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A moisture-proof composite white cardboard, comprising a moisture-proof inner core (7), characterized in that: The outer surface of the moisture-proof inner core (7) is provided with a fiber layer (6), the outer surface of the fiber layer (6) is provided with a flame retardant layer (5), the outer surface of the flame retardant layer (5) is provided with a reinforcement layer (3) via a reinforcement component, the outer surface of the reinforcement layer (3) is provided with base paper (2), the outer surface of the base paper (2) is provided with a waterproof layer (1), the reinforcement component comprises a strong and tough layer (4) located on the outer surface of the flame retardant layer (5), the outer surface of the strong and tough layer (4) is provided with a reinforcement layer (3), and the reinforcement layer (3) is located on the inner surface of the base paper (2).

2. The moisture-proof composite white cardboard according to claim 1, characterized in that: The toughening layer (4) is prepared using polyester resin as a raw material, and the reinforcement layer (3) is prepared using polyvinyl chloride as a raw material.

3. The moisture-proof composite white cardboard according to claim 2, characterized in that: The moisture-proof inner core (7) is prepared using polypropylene as raw material.

4. The moisture-proof composite white cardboard according to claim 1, characterized in that: The fiber layer (6) is prepared using pine wood pulp as raw material.

5. The moisture-proof composite white cardboard according to claim 1, characterized in that: The flame retardant layer (5) is prepared by soaking fibers in a flame retardant.

6. The moisture-proof composite white cardboard according to claim 1, characterized in that: The waterproof layer (1) is prepared using polyurethane as a raw material.

Images