Grey board two-side offset paper

Abstract

The utility model discloses grey board two-side offset paper, which relates to the technical field of paper and comprises a wear-resistant layer, a buffer layer and a damp-proof layer, a first adhesive layer is arranged at the bottom of the wear-resistant layer, the buffer layer is arranged at the bottom of the first adhesive layer, a second adhesive layer is arranged at the bottom of the buffer layer, and the damp-proof layer is arranged at the bottom of the second adhesive layer. A third adhesive layer is arranged at the bottom of the damp-proof layer, and a grey board layer is arranged at the bottom of the third adhesive layer. By arranging the wear-resistant layer, the wear-resistant performance of the grey board two-side offset paper is improved, and printed patterns and characters on the surface of the paper are protected; the buffering layer of the honeycomb structure can effectively absorb impact of external force, and the anti-extrusion capacity of the paper is enhanced; due to the arrangement of the damp-proof layer, good damp-proof performance is achieved, and the application range is widened; all the layers are firmly bonded through hot melt adhesive, so that the stability of the paper structure is ensured.

Description

Technical Field

[0001] This utility model relates to the field of paper technology, specifically to a grey board double-sided offset paper. Background Technology

[0002] Grey cardboard is a product made by laminating low-grammage offset paper with high-grammage grey board. The offset paper is whiter and more environmentally friendly. The combination of offset paper and grey board achieves a complementary effect and is usually used to make paper box products, especially export packaging products.

[0003] However, traditional grey board offset paper is usually a simple composite of a grey board layer and an offset paper layer, which has relatively limited performance and many shortcomings in actual use. For example, when used for packaging box production, it is easily deformed by external pressure and cannot effectively protect the contents; in humid environments, the paper is prone to moisture absorption, resulting in blurred printing and reduced paper strength; and its abrasion resistance is poor, and the surface is easily scratched, affecting the appearance and usability. Therefore, we propose a grey board offset paper. Utility Model Content

[0004] In view of the problems existing in the current gray board double-sided offset paper, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a grey board double-sided offset paper, which solves the problem that traditional grey board double-sided offset paper is usually simply composed of a grey board layer and a double-sided offset paper layer. Its performance is relatively simple and has many shortcomings in actual use. For example, when used for packaging box production, it is easily deformed by external pressure and cannot effectively protect the contents; in humid environments, the paper is easily damp, resulting in blurred printing and reduced paper strength; and its abrasion resistance is poor, and the surface is easily scratched, affecting the appearance and use effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A type of grey board double-sided offset paper includes an abrasion-resistant layer, a cushioning layer, and a moisture-proof layer. The bottom of the abrasion-resistant layer is provided with a first adhesive layer, the bottom of the first adhesive layer is provided with a cushioning layer, the bottom of the cushioning layer is provided with a second adhesive layer, the bottom of the second adhesive layer is provided with a moisture-proof layer, the bottom of the moisture-proof layer is provided with a third adhesive layer, the bottom of the third adhesive layer is provided with a grey board layer, and the top of the abrasion-resistant layer is provided with a printed coating.

[0008] Preferably, the wear-resistant layer is a nano-silica composite resin layer.

[0009] Preferably, the buffer layer is honeycomb-shaped and is a biodegradable bio-based polyester layer.

[0010] Preferably, the moisture-proof layer is a polyvinyl alcohol-nanomontmorillonite composite film layer.

[0011] Preferably, the printed coating is a water-based ink printed coating.

[0012] Preferably, the first adhesive layer, the second adhesive layer, and the third adhesive layer are all hot melt adhesive layers.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] This invention improves the abrasion resistance of grey board offset paper by incorporating an abrasion-resistant layer, protecting printed patterns and text on the paper surface. The honeycomb-structured buffer layer effectively absorbs external impacts, enhancing the paper's resistance to compression. The moisture-proof layer provides excellent moisture protection, expanding its application range. The layers are firmly bonded together with hot melt adhesive, ensuring the stability of the paper structure. This invention features a novel grey board offset paper structure that significantly improves performance compared to traditional grey board offset paper, demonstrating high creativity and practicality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Wear-resistant layer; 2. Buffer layer; 3. Moisture-proof layer; 4. First adhesive layer; 5. Second adhesive layer; 6. Third adhesive layer; 7. Gray board layer; 8. Printed coating. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] This utility model discloses a gray board double-sided offset paper.

[0022] This utility model provides, for example Figure 1-2The gray board double-sided offset paper shown includes an abrasion-resistant layer 1, a buffer layer 2, and a moisture-proof layer 3. A first adhesive layer 4 is provided at the bottom of the abrasion-resistant layer 1, a buffer layer 2 is provided at the bottom of the first adhesive layer 4, a second adhesive layer 5 is provided at the bottom of the buffer layer 2, a moisture-proof layer 3 is provided at the bottom of the second adhesive layer 5, a third adhesive layer 6 is provided at the bottom of the moisture-proof layer 3, and a gray board layer 7 is provided at the bottom of the third adhesive layer 6. A printed coating 8 is provided on the top of the abrasion-resistant layer 1, which improves the performance of the gray board double-sided offset paper.

[0023] This utility model discloses a gray board double-sided offset paper, wherein the wear-resistant layer 1 is a nano-silica composite resin layer. This material has excellent hardness and wear resistance, and can effectively resist external scratches and protect the paper surface. The nano-silica particles are uniformly dispersed in the resin matrix to form a tight protective network, which greatly improves the wear resistance of the wear-resistant surface layer. At the same time, the wear-resistant layer 1 has good transparency and will not affect the display effect of the printed coating 8.

[0024] This utility model discloses a grey board double-sided offset paper, wherein the buffer layer 2 is honeycomb-shaped and is a biodegradable bio-based polyester layer. The honeycomb structure can absorb energy through its own deformation when subjected to external pressure, playing a good buffering role and effectively protecting the internal structure of the paper and the packaged items. The bio-based polyester material has environmental protection properties and meets the requirements of sustainable development. Furthermore, the honeycomb-shaped buffer layer 2 can reduce the weight of the paper while ensuring a certain strength.

[0025] This utility model discloses a gray board double-sided offset paper, wherein the moisture-proof layer 3 is a polyvinyl alcohol-nano montmorillonite composite film layer. Polyvinyl alcohol has good film-forming properties and moisture-proof properties. The addition of nano montmorillonite further improves the barrier performance of the moisture-proof layer 3, which can effectively prevent the intrusion of moisture and allow the gray board double-sided offset paper to maintain good performance in humid environments. At the same time, the composite film has good flexibility and will not affect the folding and processing performance of the paper.

[0026] This utility model discloses a gray board double-sided offset paper, wherein the printing coating 8 is a water-based ink printing coating 8. Water-based ink has the advantages of being environmentally friendly and non-toxic, and having a fast drying speed. It bonds well with the wear-resistant layer 1 and can present a clear and bright printing effect.

[0027] This utility model discloses a gray board double-sided adhesive paper, wherein the first adhesive layer 4, the second adhesive layer 5, and the third adhesive layer 6 are all hot melt adhesive layers. Hot melt adhesive has the characteristics of high bonding strength and fast curing speed, which can make the layers firmly bonded together and ensure the stability of the gray board double-sided adhesive paper structure.

[0028] In the actual production process, the materials of each layer are first prepared. The wear-resistant layer 1 is made by dispersing nano-silica in a resin matrix and then mixing, coating, and curing. The buffer layer 2 is made by using a mold to form a honeycomb structure from bio-based polyester material. The moisture-proof layer 3 is made by mixing polyvinyl alcohol and nano-montmorillonite and then casting the mixture into a composite film. Then, paper is laminated onto the gray board layer 7. The third adhesive layer 6 is evenly coated onto the gray board layer 7 using a hot melt adhesive coating machine. The moisture-proof layer 3 is then bonded onto the third adhesive layer 6 and hot-pressed to firmly bond the two together. Next, the second adhesive layer 5 is coated onto the moisture-proof layer 3. The buffer layer 2 is then bonded onto the second adhesive layer 5 and hot-pressed. The first adhesive layer 4 is coated onto the buffer layer 2. The wear-resistant layer 1 is then bonded onto the first adhesive layer 4 and hot-pressed. Finally, a water-based ink printing coating 8 is coated onto the wear-resistant layer 1 to complete the production of the gray board double-sided offset paper with a composite protective structure.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A type of grey board offset paper, comprising a wear-resistant layer (1), a cushioning layer (2), and a moisture-proof layer (3), characterized in that, The wear-resistant layer (1) has a first adhesive layer (4) at the bottom, a buffer layer (2) at the bottom of the first adhesive layer (4), a second adhesive layer (5) at the bottom of the buffer layer (2), a moisture-proof layer (3) at the bottom of the second adhesive layer (5), a third adhesive layer (6) at the bottom of the moisture-proof layer (3), a gray board layer (7) at the bottom of the third adhesive layer (6), and a printed coating layer (8) at the top of the wear-resistant layer (1).

2. The grey board double coated paper as claimed in claim 1 wherein, The wear-resistant layer (1) is a nano-silica composite resin layer.

3. The grey board double coated paper as claimed in claim 1 wherein, The buffer layer (2) is honeycomb-shaped and is a biodegradable bio-based polyester layer.

4. The grey board double coated paper as claimed in claim 1 wherein, The moisture-proof layer (3) is a polyvinyl alcohol-nanomontmorillonite composite film layer.

5. The grey board double coated paper as claimed in claim 1 wherein, The printed coating (8) is a water-based ink printed coating (8).

6. The grey board double coated paper as claimed in claim 1 wherein, The first adhesive layer (4), the second adhesive layer (5) and the third adhesive layer (6) are all hot melt adhesive layers.

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