阅读说明：本技术 一种利用废弃pe制备高性能可降解快递包装膜专用料的方法 (Method for preparing high-performance degradable express packaging film special material by utilizing waste PE ) 是由 孙卫东 于 2019-08-31 设计创作，主要内容包括：本发明公开了一种利用废弃PE制备高性能可降解快递包装膜专用料的方法,包括以下步骤：S1、回收处理；S2、称取添加剂；S3、混合料的制备；S4、包装膜的制作；S5、包装膜的检测；利用回收废弃PE进行生产制造包装膜,防止资源的浪费,节约材料,且制备的包装膜可降解,降低对环境的危害性。(The invention discloses a method for preparing a high-performance degradable express packaging film special material by using waste PE, which comprises the following steps: s1, recovery processing; s2, weighing the additive; s3, preparing a mixture; s4, manufacturing a packaging film; s5, detecting the packaging film; the waste PE is recycled to produce and manufacture the packaging film, so that the waste of resources is prevented, the material is saved, the prepared packaging film is degradable, and the harm to the environment is reduced.)

1. A method for preparing a high-performance degradable express packaging film special material by using waste PE is characterized by comprising the following steps: the method comprises the following steps:

s1, recycling, namely sorting the recycled waste PE materials to obtain sundries, weighing the sorted PE materials, adding the weighed PE materials into a cleaning machine for cleaning, adding the cleaned PE materials into a drying machine for drying, and crushing the dried PE materials into qualified particle sizes by using a crusher;

s2, weighing the additive, and respectively weighing the polybutylene succinate, the polyvinyl alcohol, the cross-linking agent, the antioxidant, the plasticizer and the lubricant in corresponding parts by weight according to the weight of the PE material for later use;

s3, preparing a mixture, namely sequentially adding the PE material, the polybutylene succinate, the polyvinyl alcohol, the crosslinking agent, the antioxidant, the plasticizer, the antibacterial agent and the lubricant into a high-speed mixing mill to be uniformly mixed to obtain a first mixture, adding the reinforcing agent and the lubricant in corresponding parts by weight into the first mixture to be stirred and mixed for the second time, and heating a mixing barrel while stirring for the second time to obtain a second mixture;

s4, manufacturing a packaging film, plasticizing the second mixed material, adding the plasticized second mixed material into a double-screw extruder for extrusion granulation, adding the obtained product into a film blowing machine, and carrying out inflation, traction roller traction, cooling and winding by a winding machine to obtain a degradable express packaging film;

and S5, detecting the packaging film, namely detecting the strength, heat sealability and water resistance of the packaging film.

2. The method for preparing the special material for the high-performance degradable express packaging film by using the waste PE as claimed in claim 1, wherein the method comprises the following steps: and S1, adding a disinfectant into the cleaning liquid conveyed into the cleaning machine when the selected PE material is cleaned by the cleaning machine, and cleaning and disinfecting the PE material.

3. The method for preparing the special material for the high-performance degradable express packaging film by using the waste PE as claimed in claim 1, wherein the method comprises the following steps: the PE material in S2 accounts for 40-50 parts by weight, and the additive accounts for 10-20 parts by weight of polybutylene succinate, 2-5 parts by weight of polyvinyl alcohol, 1-2 parts by weight of cross-linking agent, 0.1-0.4 part by weight of antioxidant, 12-18 parts by weight of plasticizer, 2-4 parts by weight of antibacterial agent and 0.2-0.6 part by weight of lubricant.

4. The method for preparing the special material for the high-performance degradable express packaging film by using the waste PE as claimed in claim 1, wherein the method comprises the following steps: the reinforcing agent in the S3 is a mixture of 1: 3, mixing the ethylene glycol and the glycerol.

5. The method for preparing the special material for the high-performance degradable express packaging film by using the waste PE as claimed in claim 1, wherein the method comprises the following steps: the rotation speed of the high-speed mixing mill in S3 is 3000-4000 revolutions per minute, and the stirring time is 15-25 minutes.

6. The method for preparing the special material for the high-performance degradable express packaging film by using the waste PE as claimed in claim 1, wherein the method comprises the following steps: the rotation speed of the second stirring in S3 is 5000-7000 rpm, and the stirring time is 5-10 minutes.

7. The method for preparing the special material for the high-performance degradable express packaging film by using the waste PE as claimed in claim 1, wherein the method comprises the following steps: the heating temperature of the mixing barrel in the S3 is 180-220 ℃, and the heating time is 20-30 minutes.

8. The method for preparing the special material for the high-performance degradable express packaging film by using the waste PE as claimed in claim 1, wherein the method comprises the following steps: the temperature of the twin-screw extruder in S4 is 160-170 ℃, the blow-up ratio is 2.0-3.0, and the drawing speed of the drawing roll is 10-50 m/min.

Technical Field

The invention relates to the field of PE recycling, in particular to a method for preparing a high-performance degradable express packaging film special material by using waste PE.

Background

The packaging film is mainly formed by the resin mixture extrusion of several kinds of different brands, has anti puncture, and super strength high performance twines the packing to the goods of stacking on the layer board, makes the packing material more firm clean and tidy, and superstrong waterproof effect is widely used, at foreign trade export, papermaking, five metals, plastics chemical industry, building materials, food and medicine trade.

The waste PE is treated in a landfill mode and an incineration mode, the environment is polluted, the waste PE cannot be degraded, and if the waste PE is not recycled, the waste PE causes material waste and environment pollution.

Disclosure of Invention

The invention aims to provide a method for preparing a high-performance degradable express packaging film special material by using waste PE, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a method for preparing a high-performance degradable express packaging film special material by using waste PE comprises the following steps:

s1, recycling, namely sorting the recycled waste PE materials to obtain sundries, weighing the sorted PE materials, adding the weighed PE materials into a cleaning machine for cleaning, adding the cleaned PE materials into a drying machine for drying, and crushing the dried PE materials into qualified particle sizes by using a crusher;

s2, weighing the additive, and respectively weighing the polybutylene succinate, the polyvinyl alcohol, the cross-linking agent, the antioxidant, the plasticizer and the lubricant in corresponding parts by weight according to the weight of the PE material for later use;

s3, preparing a mixture, namely sequentially adding the PE material, the polybutylene succinate, the polyvinyl alcohol, the crosslinking agent, the antioxidant, the plasticizer, the antibacterial agent and the lubricant into a high-speed mixing mill to be uniformly mixed to obtain a first mixture, adding the reinforcing agent and the lubricant in corresponding parts by weight into the first mixture to be stirred and mixed for the second time, and heating a mixing barrel while stirring for the second time to obtain a second mixture;

s4, manufacturing a packaging film, plasticizing the second mixed material, adding the plasticized second mixed material into a double-screw extruder for extrusion granulation, adding the obtained product into a film blowing machine, and carrying out inflation, traction roller traction, cooling and winding by a winding machine to obtain a degradable express packaging film;

and S5, detecting the packaging film, namely detecting the strength, heat sealability and water resistance of the packaging film.

Preferably, when the sorted PE material is washed in the washing machine in S1, a disinfectant is added to the washing liquid fed into the washing machine to perform a washing and disinfecting treatment on the PE material.

Preferably, the PE material in S2 accounts for 40-50 parts by weight, and the additive accounts for 10-20 parts by weight of polybutylene succinate, 2-5 parts by weight of polyvinyl alcohol, 1-2 parts by weight of cross-linking agent, 0.1-0.4 part by weight of antioxidant, 12-18 parts by weight of plasticizer, 2-4 parts by weight of antibacterial agent and 0.2-0.6 part by weight of lubricant.

Preferably, the reinforcing agent in the S3 is a mixture of reinforcing agents with the weight ratio of 1: 3, mixing the ethylene glycol and the glycerol.

Preferably, the rotation speed of the high-speed mixing mill in S3 is 3000-4000 rpm, and the stirring time is 15-25 minutes.

Preferably, the rotation speed of the second stirring in S3 is 5000-7000 rpm, and the stirring time is 5-10 minutes.

Preferably, the heating temperature of the mixing barrel in the S3 is 180-220 ℃, and the heating time is 20-30 minutes.

Preferably, the temperature of the twin-screw extruder in S4 is 160-170 ℃, the blow-up ratio is 2.0-3.0, and the drawing speed of the drawing roll is 10-50 m/min.

Compared with the prior art, the invention has the beneficial effects that: the waste PE is recycled to produce and manufacture the packaging film, so that the waste of resources is prevented, the material is saved, the prepared packaging film is degradable, and the harm to the environment is reduced.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.