Degradable coating paper for environment-friendly mulching film

Abstract

The degradable coating paper comprises a paper layer and a water-based coating, a coating smooth surface is arranged on one side of the paper layer, a rough surface is arranged on the side, away from the coating smooth surface, of the paper layer, and the water-based coating covers the side, away from the coating smooth surface, of the paper layer. The surface of the paper layer, which needs to be coated with the coating, is smoothed to form a coating smooth surface structure, so that the problem that the thickness of the coating is not uniform due to the uneven surface of the paper layer can be effectively solved, and the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of ground films, in particular to a degradable coating paper for environmentally friendly ground films. Background Art

[0002] Ground film is a ground covering film used for ground covering to increase soil temperature, retain soil moisture, maintain soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, and promote plant growth. Traditional ordinary plastic ground film is mainly made of polyethylene or polyvinyl chloride, which is extremely stable and can be degraded in 200-300 years.

[0003] The utility model patent with application number CN01244441.3 in the prior art discloses a non-woven ground film, which is made of pulp pressed into non-woven fabric at one time, and the coating on the surface of the non-woven fabric contains waterproofing agent and insect repellent. It can be used for overhead covering of crops and ground covering, can effectively prevent and control pests and diseases, and improve the yield and quality of crops. The utility model is degradable and recyclable, has the characteristics of good air permeability and waterproofness, and can be naturally decomposed and absorbed by the soil after about 60 days of use, effectively solving environmental pollution. However, the utility model simply applies a layer of coating on the paper layer. Although the processing is simple, due to the rough and uneven surface of the paper non-woven fabric, when applying the coating, it may cause the problem of uneven coating thickness, and there is further room for improvement. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a degradable coated paper for an environmentally friendly mulch film, thereby solving the above problem.

[0005] To achieve the above-mentioned purpose, a biodegradable coated paper for environmentally friendly mulch is provided, comprising a paper layer and a water-based coating, wherein a coating glossy surface is provided on one side of the paper layer, a rough surface is provided on the side of the paper layer away from the coating glossy surface, and the coating glossy surface of the paper layer is covered with a water-based coating.

[0006] According to the degradable coated paper for environmentally friendly ground film, when the composite layer of the paper layer and the water-based coating is rolled up, the rough surface is located on the outside and the water-based coating is located on the inside.

[0007] According to the degradable coated paper for environmentally friendly ground film, the water-based coating is an propylene polymer coating modified by a special monomer.

[0008] According to the environmentally friendly degradable coated paper for ground film, the main components of the propylene polymer modified by special monomers are copolymers of butyl acrylate and acrylic acid, octadecyl alcohol polyoxyethylene ether, and sodium lauryl alcohol sulfate.

[0009] The above solution has at least one of the following beneficial effects:

[0010] 1. The paper layer of the utility model is smoothed on the side where the coating is required to be applied to form a coating smooth surface structure, which can effectively reduce the problem of uneven coating thickness caused by the uneven surface of the paper layer, thereby enhancing the practicality of the device.

[0011] 2. When the utility model is wound, by placing the rough surface on the outside, the damage to the outermost coating of the wound roll can be effectively reduced during packaging and transportation, thereby reducing the ineffective loss of the product before use and enhancing the practicality of the device.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a schematic diagram of the coating separation side structure of a degradable coated paper for an environmentally friendly mulch film according to the utility model;

[0015] Figure 2 This is a top view of a three-dimensional structure of a coating separation of a degradable coated paper for an environmentally friendly mulch film according to the utility model;

[0016] Figure 3 This is a schematic diagram of a three-dimensional structure of coating separation of a degradable coated paper for an environmentally friendly mulch film according to the utility model when viewed from above;

[0017] Legend:

[0018] 1. Paper layer; 2. Water-based coating; 3. Glossy coating surface; 4. Rough surface. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] Reference Figure 1-3The embodiment of the utility model provides a degradable coated paper for environmentally friendly ground film, comprising a paper layer 1 and a water-based coating 2. A coating smooth surface 3 is provided on one side of the paper layer 1, and a rough surface 4 is provided on the side of the paper layer 1 away from the coating smooth surface 3. The coating smooth surface 3 of the paper layer 1 is covered with a water-based coating 2, which can effectively reduce the problem of uneven coating thickness caused by the uneven surface of the paper layer. The water-based coating 2 is a propylene polymer coating modified by a special monomer, and the main component of the coating is a copolymer of butyl acrylate and acrylic acid. The test results of cadmium, lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs), phthalates such as dibutyl phthalate (DBP), butyl benzyl phthalate (BBP), di (2-ethylhexyl) phthalate (DEHP) and diisobutyl phthalate (DIBP) in the coating all meet the limit requirements of the amendment directive (EU) 2015 / 863 of Annex II of the EU RoHS Directive 2011 / 65 / EU;

[0021] When the composite layer of the paper layer 1 and the water-based coating 2 is wound, the rough surface 4 is located on the outside and the water-based coating 2 is located on the inside. During packaging and transportation, the damage to the outermost layer of the winding coating can be effectively reduced, thereby reducing the ineffective loss of the product before use.

[0022] Working principle: During production of the utility model, the paper layer 1 needs to be polished by a polishing roller on the side where the coating is required, which can not only form a coating polished surface 3 structure, but also simultaneously flatten and frictionally heat the paper raw material, which can not only effectively reduce the problem of uneven coating thickness caused by the uneven surface of the paper layer, but also utilize the increased temperature of the paper raw material to better allow the coating molecules to infiltrate the paper surface, which is beneficial to the coating. During packaging and transportation, by placing the rough surface 4 on the outside, the damage to the outermost layer of the winding coating can be effectively reduced, thereby reducing the ineffective loss of the product before use.

[0023] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A degradable coated paper for environmentally friendly mulch film, comprising a paper layer (1) and a water-based coating (2), characterized in that: A coated smooth surface (3) is provided on one side of the paper layer (1), a rough surface (4) is provided on the side of the paper layer (1) away from the coated smooth surface (3), and a water-based coating (2) is covered on one side of the coated smooth surface (3) of the paper layer (1).

2. The degradable coated paper for environmentally friendly mulch film according to claim 1, characterized in that: When the composite layer of the paper layer (1) and the water-based coating (2) is rolled up, the rough surface (4) is located on the outside and the water-based coating (2) is located on the inside.

3. The degradable coated paper for environmentally friendly mulch film according to claim 1, characterized in that: The water-based coating (2) is an propylene-based polymer coating modified by a special monomer.

Images