阅读说明：本技术 一种生物全降解材料及其纸张淋膜工艺 (Fully biodegradable material and paper laminating process thereof ) 是由 穆猛 苏小智 苏植敏 张云 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种生物全降解材料及其纸张淋膜工艺,所述生物全降解材料包括竹粉、木薯粉、生物树脂、PLA、PBS以及滑石粉,各组分混合后经生物酶催化制得；所述生物全降解材料的纸张淋膜工艺包括：将待淋膜处理的纸张预热,将所述的生物全降解材料加热至120-150℃,至熔融状态,将熔融状态下的生物全降解料均匀的流延分布到已经预热好的纸张表面,用辊轮将流延分布在纸张表面的薄膜层和纸张紧密压在一起。本发明的生物全降解材料成本低,在不影响性能的前提下采用混合加入性价比更高的其他多种成分,从而更利于降解材料的推广应用；本发明工艺的淋膜温度低,只需120-150℃,消耗的能源更少,节能环保。(The invention discloses a fully biodegradable material and a paper laminating process thereof, wherein the fully biodegradable material comprises bamboo powder, cassava powder, biological resin, PLA, PBS and talcum powder, and is prepared by mixing the components and then carrying out biological enzyme catalysis; the paper laminating process of the fully biodegradable material comprises the following steps: preheating paper to be subjected to film coating treatment, heating the fully biodegradable material to the temperature of 120-150 ℃ to a molten state, uniformly casting and distributing the fully biodegradable material in the molten state to the surface of the preheated paper, and tensioning and closely pressing a thin film layer and the paper which are cast and distributed on the surface of the paper together by using a roller. The fully biodegradable material has low cost, and other various components with higher cost performance are mixed and added on the premise of not influencing the performance, so that the popularization and the application of the biodegradable material are facilitated; the film spraying temperature of the process is low, only 120-150 ℃, less energy consumption, energy conservation and environmental protection.)

1. A fully biodegradable material, comprising: bamboo powder, starch, biological resin, PLA, PBS and talcum powder, and the components are mixed and then catalyzed by biological enzyme to prepare the bamboo powder.

2. The fully biodegradable material according to claim 1, wherein the components are, by mass: 10-15 parts of bamboo powder, 16-20 parts of starch, 18-24 parts of biological resin, 20-25 parts of PLA, 20-30 parts of PBS and 10-25 parts of talcum powder.

3. The fully biodegradable material as claimed in claim 1, wherein the particle size of the bamboo powder is 800-1200 mesh.

4. The fully biodegradable material according to claim 1, characterized in that said starch comprises: tapioca flour, sweet potato flour or potato flour.

5. A paper laminating process for a fully biodegradable material is characterized by comprising the following steps:

s1: preheating paper to be subjected to laminating treatment to 70-90 ℃;

s2: heating the fully biodegradable material of any one of claims 1 to 4 to a temperature of 120 ℃ to 150 ℃ to a molten state;

s3: uniformly casting and distributing the fully biodegradable material in a molten state to the surface of the preheated paper to form a thin film layer;

s4: and tensioning and pressing the thin film layer and the paper which are cast and distributed on the surface of the paper together by a roller.

6. The paper laminating process of fully biodegradable material according to claim 5, wherein the thickness of the formed film is 5-30 μm.

7. The paper laminating process of fully biodegradable material according to claim 5, wherein all steps are performed using a casting machine.

Technical Field

The invention relates to a paper laminating process for a fully biodegradable material.

Background

For a paper laminating process, the laminating temperature of common materials on the market at present is about 300 ℃, the temperature is high, the energy consumption is high, the environment is not protected, and the paper laminating process is in a half-elimination trend; if the degradable material is adopted, the economic cost is high when the degradable material is popularized because the degradable material is very expensive and is limited by the cost.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a fully biodegradable material and a paper laminating process thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: a fully biodegradable material comprising: bamboo powder, starch, biological resin, PLA, PBS and talcum powder, and the components are mixed and then catalyzed by biological enzyme to prepare the bamboo powder.

The components are as follows according to the mass ratio: 10-15 parts of bamboo powder, 16-20 parts of starch, 18-24 parts of biological resin, 20-25 parts of PLA, 20-30 parts of PBS and 10-25 parts of talcum powder.

The particle size of the bamboo powder is 800-1200 meshes.

The starch comprises: tapioca flour, sweet potato flour or potato flour.

Another technical scheme adopted by the invention for solving the technical problems is as follows: a paper laminating process for a fully biodegradable material comprises the following steps:

s1: preheating paper to be subjected to laminating treatment to 70-90 ℃;

s2: heating the fully biodegradable material to the temperature of 120-150 ℃ to a molten state;

s3: uniformly casting and distributing the fully biodegradable material in a molten state to the surface of the preheated paper to form a thin film layer;

s4: and tensioning and pressing the thin film layer and the paper which are cast and distributed on the surface of the paper together by a roller.

The thickness of the formed film layer is 5-30 μm.

All steps were done using a casting machine.

Compared with the prior art, the invention has the beneficial effects that:

the film spraying temperature of the process is low, only 120-150 ℃ is needed, the consumed energy is less, and the process is energy-saving and environment-friendly;

the adopted fully biodegradable material has low cost, and other components with higher cost performance are mixed and added on the premise of not influencing the performance, so that the popularization and application of the biodegradable material are facilitated;

the paper adopts a film-coated fully biodegradable material as a film layer, and the film layer can prevent water and oil stains and can be used as disposable paper cups, lunch boxes and the like; the paper and the film layer on the surface of the paper can be completely degraded in natural environment, are green and environment-friendly, and cannot pollute the environment.

Detailed Description

The present invention will be further described with reference to specific embodiments.

The paper laminating process for the fully biodegradable material, which is designed by the preferred embodiment of the invention, mainly comprises the following steps:

s1: preheating paper to be subjected to laminating treatment to 70-90 ℃;

s2: heating the fully biodegradable material to the temperature of 120-150 ℃ to a molten state;

s3: uniformly casting and distributing the fully biodegradable material in a molten state to the surface of the preheated paper to form a thin film layer;

s4: and tensioning and pressing the thin film layer and the paper which are cast and distributed on the surface of the paper together by a roller.

The biological full-degradable material comprises the following components in percentage by mass: 10-15 parts of bamboo powder, 16-20 parts of cassava powder, 18-24 parts of biological resin, 20-25 parts of PLA, 20-30 parts of PBS and 10-25 parts of talcum powder, and mixing the components and then carrying out biological enzyme catalysis to obtain the composite material. Wherein, the main component of the biological resin is PPC, namely polymethyl ethylene carbonate, PLA is polylactic acid, also called polylactide, and PBS is poly butylene succinate. The film coating temperature of the process is low because the melting point of the completely biodegradable material is low, PLA is a novel biodegradable material in recent years, but in the actual production and manufacturing process, due to the restriction of foreign countries, the cost of PLA is high, the melting point of PLA is 180 ℃, in order to reduce the film coating temperature of common materials, in order to reduce the production cost, PBS is added on the basis of PLA, bamboo powder, cassava powder, biological resin and the like are added, a plurality of materials are mixed, and through a plurality of experimental trials and comparisons, the melting point of the mixed material in the process is lower than that of the PLA and other materials, and the mixed and added materials are completely biodegradable materials, so that the cost is greatly reduced compared with the single use of PLA or PBS.

Furthermore, the particle size of the bamboo powder needs to be controlled to be 800-1200 meshes, the fully biodegradable material adopting the particle size has good fluidity in a molten state, the smaller the particle size, the better the fluidity, the better the performance of the finally obtained film layer, and the excellent strength, flexural modulus and elastic modulus. The cassava flour can also be replaced by sweet potato flour, potato flour and other starches.

The thickness and the material of the paper used in the process have no special requirements, the preheating temperature can reach 70-90 ℃, no special requirement on duration exists, and the paper is preheated in a casting machine; the fully biodegradable material is also heated to a molten state in a casting machine; then, the film spraying operation is carried out through a casting machine, and the thickness of a film layer formed by casting the fully biodegradable material is about 5-30 mu m; and finally, performing rolling operation on a roller of the casting machine.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any indirect modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention by those skilled in the art are within the technical scope of the present invention.