Oil-proof and water-proof coated paper

Abstract

The utility model discloses oil-proof and water-proof coated paper which comprises base paper and a first protective layer, the first protective layer is connected to two ends of the base paper, a reinforcing layer is arranged at one end of the first protective layer, and a second protective layer is arranged at one end of the reinforcing layer. The waterproof performance of the base paper is enhanced through the upper moisture-proof layer and the lower moisture-proof layer, the upper moisture-proof layer is a filter paper water-resistant agent so that the strength and the water-resistant performance of the coated paper can be improved conveniently, the lower moisture-proof layer is composed of the resin and the ultra-low density polyethylene, the resin is generally insoluble in water, and the ultra-low density polyethylene has impact resistance, tear resistance and low water absorption, so that the water-resistant performance of the coated paper is improved. The resin and the extremely low density polyethylene are synthesized, so that the waterproof performance of the base paper is improved, that is, the waterproof performance of the coated paper is improved, the coated paper is prevented from being wetted by water and cannot be used, and the reinforcing layer is made of acetic bacteria and agrobacterium under different conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of coated paper, and particularly relates to a coated paper capable of preventing oil and water. Background Art

[0002] Coated paper is coated with a layer of coating on the base paper to endow the paper with good optical properties and printing performance, etc. Its main uses are: printing publication papers such as magazines and books, and printing papers such as trademarks, packaging, and catalogs, and the ratio between the two is about 1:3. Coated paper can be roughly divided into: coated art paper, coated paper, and lightweight coated paper. In addition, there are also special coated papers such as calendered coated paper. The manufacture of coated paper simply refers to coating the coating on the base paper and then using a calender to smooth its surface after drying. Therefore, the base paper and the coating are important factors affecting the quality of coated paper;

[0003] Chinese Patent Grant Publication No. CN214245124U discloses an oil-proof paper; which includes a base paper substrate and a coating layer, and there is a PVDF coating layer on the surface of the base paper substrate; the oil-proof paper provided by the utility model, according to different types of base paper substrates and different coating amounts of the PVDF coating layer, because PVDF has excellent high temperature resistance, corrosion resistance, weather resistance, oil resistance, and good radiation resistance, so the oil-proof grade of the oil-proof paper of the utility model can reach up to KIT20 level at most, and it is used in the outer packaging fields of food, medicine, instrument and equipment, etc.;

[0004] The above-mentioned existing technical solutions have the following deficiencies: in the use of the technical solution, the base paper substrate lacks a waterproof mechanism, which is inconvenient to endow the base paper substrate with waterproof performance, and makes the base paper substrate easy to be soaked and swollen during use, thus affecting the normal use of the base paper substrate. Therefore, it is necessary to design a coated paper capable of preventing oil and water to solve the above-mentioned problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a coated paper capable of preventing oil and water to solve the problem of inconvenient waterproofing of the coated paper proposed in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a coated paper capable of preventing oil and water, including a base paper and a first protective layer, and the first protective layer is connected to both ends of the base paper;

[0007] One end of the first protective layer is provided with a strengthening layer, and one end of the strengthening layer is provided with a second protective layer.

[0008] Preferably, the first protective layer is composed of a moisture-proof upper layer and a moisture-proof lower layer, the moisture-proof lower layer is arranged below the moisture-proof upper layer, and one end of the moisture-proof lower layer is connected to the base paper.

[0009] Preferably, the moisture-proof upper layer is a filter paper water repellent, and the moisture-proof lower layer is composed of resin and very low density polyethylene.

[0010] Preferably, bacterial cellulose is incorporated inside the reinforcing layer.

[0011] Preferably, the base paper is ordinary release paper.

[0012] Preferably, the second protective layer is composed of an oil-proof layer and an outer layer. The outer layer is coated above the oil-proof layer, and the oil-proof layer is connected to one end of the reinforcing layer.

[0013] Preferably, the oil-proof layer is glassine paper and the outer layer is a fluorosurfactant.

[0014] Preferably, two sets of the reinforcing layer and the second protective layer are provided, which are respectively connected above or below the base paper and the first protective layer.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The oil-proof and waterproof coated paper realizes the performance of the coated paper having oil-proof and waterproof properties, which is convenient for improving the service life of the coated paper, strengthening the internal structure of the coated paper, increasing the use strength of the coated paper, and prolonging the service life of the coated paper;

[0016] 1. The waterproof performance of the base paper is enhanced by the moisture-proof upper layer and the moisture-proof lower layer. The moisture-proof upper layer is a filter paper water repellent, which is convenient for improving the strength and water resistance of the coated paper. The moisture-proof lower layer is composed of resin and very low density polyethylene. Resin is generally insoluble in water, and very low density polyethylene has impact resistance, tear resistance, and very low water absorption. By synthesizing resin and very low density polyethylene, the waterproof performance of the base paper is improved, that is, the waterproof performance of the coated paper is improved, preventing the coated paper from being soaked by water and becoming unusable;

[0017] 2. Since the reinforcing layer is a general term for cellulose synthesized by certain microorganisms such as Acetobacter, Agrobacterium, Rhizobium, and Sarcina under different conditions, by incorporating bacterial cellulose inside the reinforcing layer, that is, adding acetic acid bacteria cellulose to the base paper, the strength and durability of the coated paper can be improved, and it is also convenient for recycling;

[0018] 3. The oil-proof layer is glassine paper, which gives the outside of the base paper moisture-proof and oil-proof properties. And an outer layer is added outside the oil-proof layer. Since the outer layer is a fluorosurfactant, by processing the outside of the coated paper, a water-repellent and oil-repellent layer with fluorine alkyl groups arranged outwardly is formed on the outer surface to achieve the effect of waterproof and oil-proof, which is convenient for improving the oil-proof performance of the coated paper. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic perspective view of the front view of the present invention;

[0021] Figure 2 It is a schematic perspective view of the partial cross-section of the front view of the present invention;

[0022] Figure 3 It is a schematic perspective view of the cross-section of the first protective layer of the present invention;

[0023] Figure 4 It is a schematic perspective view of the partial cross-section of the strengthening layer of the present invention.

[0024] Explanation of the reference numerals in the drawings: 1, base paper; 2, first protective layer; 201, upper moisture-proof layer; 202, lower moisture-proof layer; 3, strengthening layer; 4, second protective layer; 401, oil-proof layer; 402, outer layer. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1-4 , the present invention provides the following technical solutions: Embodiment

[0027] To solve the problem that coated paper in the prior art is inconvenient for waterproof and oil-proof, the following solutions are disclosed. Specifically, please refer to Figure 1 , Figure 3, including base paper 1 and a first protective layer 2. The first protective layer 2 is connected to both ends of the base paper 1. One end of the first protective layer 2 is provided with a reinforcing layer 3, and one end of the reinforcing layer 3 is provided with a second protective layer 4. The first protective layer 2 is composed of a moisture-proof upper layer 201 and a moisture-proof lower layer 202. The moisture-proof lower layer 202 is arranged below the moisture-proof upper layer 201, and one end of the moisture-proof lower layer 202 is connected to the base paper 1. The moisture-proof upper layer 201 is a filter paper water repellent, and the moisture-proof lower layer 202 is composed of resin and very low density polyethylene. The base paper 1 is ordinary release paper. The second protective layer 4 is composed of an oil-proof layer 401 and an outer layer 402. The outer layer 402 is coated on the upper side of the oil-proof layer 401. The oil-proof layer 401 is connected to one end of the reinforcing layer 3. The oil-proof layer 401 is glassine paper, and the outer layer 402 is a fluorosurfactant.

[0028] In this embodiment, during use, the moisture-proof upper layer 201 is a filter paper water repellent and has water resistance. The moisture-proof lower layer 202 is composed of resin and very low density polyethylene. Resin is generally insoluble in water, and very low density polyethylene has impact resistance and tear resistance and very low water absorption. By synthesizing resin and very low density polyethylene, it is convenient to improve the waterproof performance of the base paper 1, that is, to improve the waterproof performance of the coated paper. The oil-proof layer 401 is glassine paper, which strengthens the oil-proof property of the base paper 1. And an outer layer 402 is added outside the oil-proof layer 401. Since the outer layer 402 is a fluorosurfactant, through processing the coated paper, a water-repellent and oil-repellent layer with fluorine alkyl arranged outwardly is formed on the outer surface to achieve the effect of waterproof and oil-proof, which is convenient to improve the oil-proof performance of the coated paper. Embodiment

[0029] This embodiment is different from Embodiment 1. In order to solve the problem of adjusting the poor self-hardness of the coated paper in the prior art and improve the pore stability, the following scheme is disclosed. For details, please refer to Figure 2 , Figure 4 , bacterial cellulose is fused inside the reinforcing layer 3. There are two groups of the reinforcing layer 3 and the second protective layer 4, which are respectively connected above or below the base paper 1 and the first protective layer 2.

[0030] In this embodiment, during use, the reinforcing layer 3 is a general term for cellulose synthesized by a certain microorganism among Acetobacter, Agrobacterium, Rhizobium, and Sarcina under different conditions. By fusing bacterial cellulose inside the reinforcing layer 3, that is, adding acetic acid bacteria cellulose to the base paper 1, the strength and durability of the coated paper can be improved, and it is convenient for subsequent recycling.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil- and water-proof coated paper, comprising a base paper (1) and a first protective layer (2), wherein the first protective layer (2) is connected to both ends of the base paper (1); It is characterized in that: One end of the first protective layer (2) is provided with a reinforcing layer (3), and one end of the reinforcing layer (3) is provided with a second protective layer (4).

2. The oil- and water-proof coating paper according to claim 1, wherein: The first protective layer (2) is composed of a moisture-proof upper layer (201) and a moisture-proof lower layer (202). The moisture-proof lower layer (202) is arranged below the moisture-proof upper layer (201), and one end of the moisture-proof lower layer (202) is connected to the base paper (1).

3. The oil- and water-proof coating paper according to claim 2, characterized in that: The moisture-proof upper layer (201) is a filter paper water repellent, and the moisture-proof lower layer (202) is composed of resin and very low density polyethylene.

4. The oil- and water-proof coating paper according to claim 1, characterized in that: Bacterial cellulose is incorporated into the reinforcing layer (3).

5. A grease- and water-proof coating paper according to claim 1, characterized in that: The base paper (1) is ordinary release paper.

6. A grease- and water-proof coating paper according to claim 1, characterized in that: The second protective layer (4) is composed of an oil-proof layer (401) and an outer layer (402). The outer layer (402) is coated on the upper side of the oil-proof layer (401), and the oil-proof layer (401) is connected to one end of the reinforcing layer (3).

7. The oil- and water-proof coating paper according to claim 6, characterized in that: The oil-proof layer (401) is glassine paper, and the outer layer (402) is a fluorosurfactant.

8. A grease- and water-proof coating paper according to claim 1, characterized in that: There are two sets of the reinforcing layer (3) and the second protective layer (4), which are respectively connected above or below the base paper (1) and the first protective layer (2).

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