阅读说明：本技术 一种可生物降解复合薄膜的制备方法 (Preparation method of biodegradable composite film ) 是由 陈春辉 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种可生物降解复合薄膜的制备方法。本发明包括S1、将聚乙烯、可降解助剂进行均速搅拌,得到复合料,聚乙烯的含量为98-99.5％,可降解助剂的含量为0.5-2％,S2、搅拌后的复合料加入到螺杆挤出机内进行挤出,S3、将挤出后的复合料通过吹塑机进行吹塑成型,吹塑成型的膜的宽度为1-2m,S4、将吹塑成型后的膜放入收卷机上进行收卷,S5、利用印刷机对收卷好的膜进行单面或双面印刷,S6、利用裁切机对印刷好后的膜进行裁切,S7、将裁切后的膜进行检测,合格的进行包装。本发明通过该工艺制作的薄膜易于生物降解,减少了塑料原料对环境的污染,更环保。(The invention discloses a preparation method of a biodegradable composite film. The method comprises the steps of S1, stirring polyethylene and a degradable auxiliary agent at a uniform speed to obtain a composite material, wherein the content of the polyethylene is 98-99.5%, the content of the degradable auxiliary agent is 0.5-2%, S2, adding the stirred composite material into a screw extruder for extrusion, S3, carrying out blow molding on the extruded composite material through a blow molding machine, the width of a blow molded film is 1-2m, S4, winding the blow molded film on a winding machine, S5, carrying out single-side or double-side printing on the wound film through a printing machine, S6, cutting the printed film through a cutting machine, S7, detecting the cut film, and packaging qualified. The film prepared by the process is easy to biodegrade, reduces the pollution of plastic raw materials to the environment, and is more environment-friendly.)

1. A preparation method of a biodegradable composite film is characterized by comprising the following steps:

s1, uniformly stirring the polyethylene and the degradable additive to obtain a composite material, wherein the content of the polyethylene is 98-99.5%, and the content of the degradable additive is 0.5-2%;

s2, adding the stirred composite material into a screw extruder for extrusion;

s3, carrying out blow molding on the extruded composite material through a blow molding machine; the width of the blow-molded film is 1-2 m;

s4, placing the film subjected to blow molding on a winding machine for winding;

s5, printing the rolled film on one side or two sides by using a printer;

s6, cutting the printed film by using a cutting machine;

and S7, detecting the cut film, and packaging the film qualified.

2. The method of claim 1, wherein the stirring time in S1 is 40min, and the stirring speed is 60 r/min.

3. The method of claim 2, wherein the screw extruder in S2 is rotated at 30 r/min.

4. The method of claim 3, wherein the take-up speed in S4 is 25 m/min.

5. The method of claim 4, wherein the content of the polyethylene is 98% and the content of the degradable additive is 2%.

6. The method of claim 5, wherein the polyethylene is 99.5% and the degradable additive is 0.5%.

7. The method of claim 5, wherein the polyethylene is 99% and the degradable additive is 1%.

Technical Field

The invention relates to a preparation method of a biodegradable composite film.

Background

The plastic packaging bag is made of a film, and the traditional film is made of a plastic material and cannot be naturally degraded, so that a preparation method of the biodegradable composite film is needed.

Disclosure of Invention

The invention aims to provide a preparation method of a biodegradable composite film, the film prepared by the process is easy to biodegrade, the pollution of plastic raw materials to the environment is reduced, the film is more environment-friendly, and the problems in the prior art are solved.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a preparation method of a biodegradable composite film comprises the steps of S1, stirring polyethylene and a degradable auxiliary agent at a uniform speed to obtain a composite material, wherein the content of the polyethylene is 98-99.5%, the content of the degradable auxiliary agent is 0.5-2%, S2, the stirred composite material is added into a screw extruder to be extruded, S3, the extruded composite material is subjected to blow molding through a blow molding machine, the width of the blow molded film is 1-2m, S4, the blow molded film is placed on a winding machine to be wound, S5, single-side or double-side printing is carried out on the wound film through a printing machine, S6, the printed film is cut through a cutting machine, S7, the cut film is detected, and qualified packaging is carried out.

Optionally, the stirring time in S1 is 40min, and the stirring speed is 60 r/min.

Optionally, the rotation speed of the screw extruder in S2 is 30 r/min.

Optionally, the winding speed in S4 is 25 m/min.

Optionally, the content of the polyethylene is 98%, and the content of the degradable additive is 2%.

Optionally, the content of the polyethylene is 99.5%, and the content of the degradable additive is 0.5%.

Optionally, the content of the polyethylene is 99%, and the content of the degradable additive is 1%.

The embodiment of the invention has the following beneficial effects:

according to one embodiment of the invention, the film prepared by the process is easy to biodegrade, reduces the pollution of plastic raw materials to the environment, and is more environment-friendly.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Detailed Description

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

In this embodiment, a method for preparing a biodegradable composite film is provided, which includes: s1, stirring polyethylene and a degradable additive at a uniform speed to obtain a composite material, wherein the content of the polyethylene is 98-99.5%, the content of the degradable additive is 0.5-2%, S2, adding the stirred composite material into a screw extruder for extrusion, S3, performing blow molding on the extruded composite material through a blow molding machine, the width of a blow molded film is 1-2m, S4, placing the blow molded film on a winding machine for winding, S5, performing single-side or double-side printing on the wound film through a printing machine, S6, cutting the printed film through a cutting machine, and S7, detecting the cut film, and packaging qualified.

The application of one aspect of the embodiment is as follows: s1, stirring polyethylene and a degradable additive at a uniform speed to obtain a composite material, wherein the content of the polyethylene is 98-99.5%, the content of the degradable additive is 0.5-2%, S2, adding the stirred composite material into a screw extruder for extrusion, S3, performing blow molding on the extruded composite material through a blow molding machine, the width of a blow molded film is 1-2m, S4, placing the blow molded film on a winding machine for winding, S5, performing single-side or double-side printing on the wound film through a printing machine, S6, cutting the printed film through a cutting machine, and S7, detecting the cut film, and packaging qualified.

The film prepared by the process is easy to biodegrade, reduces the pollution of plastic raw materials to the environment and is more environment-friendly.

In this example, the stirring time in S1 was 40min, and the stirring rotation speed was 60 r/min.

The rotation speed of the screw extruder in the S2 of this example was 30 r/min.

The take-up speed in S4 of this embodiment was 25 m/min.

In this embodiment, the content of the polyethylene is 98% and the content of the degradable additive is 2%.

In this embodiment, the content of the polyethylene is 99.5%, and the content of the degradable additive is 0.5%.

In this embodiment, the content of the polyethylene is 99%, and the content of the degradable additive is 1%.

The above embodiments may be combined with each other.