阅读说明：本技术 一种加强型可降解的气泡膜及其制备方法 (Reinforced degradable bubble film and preparation method thereof ) 是由 张磊磊 沈绪中 于 2020-12-26 设计创作，主要内容包括：本发明公开了一种加强型可降解的气泡膜及其制备方法,气泡膜由以下重量份原料组成：生物降解添加剂70-80份、高压低密度聚乙烯15-20份、线性低密度聚乙烯10-15份、抗静电剂1-2份、增韧剂0.5-1份、色母粒0.1-0.3份；该制备方法包括以下步骤：步骤一：准备生物降解添加剂、高压低密度聚乙烯、线性低密度聚乙烯、抗静电剂、增韧剂和色母粒按重量份进行称料；步骤二：将高压低密度聚乙烯、线性低密度聚乙烯、抗静电剂、增韧剂和色母粒加入搅拌机中进行搅拌,在搅拌过程中加入生物降解添加剂,得到混合料；步骤三：将步骤二得到的混合料放到气泡膜机中先挤出再成型,制得气泡膜。本发明的有益效果是,提高了气泡膜的使用寿命,废弃后气泡膜的降解速度得到了提高。(The invention discloses a reinforced degradable bubble film and a preparation method thereof, wherein the bubble film is prepared from the following raw materials in parts by weight: 70-80 parts of biodegradable additive, 15-20 parts of high-pressure low-density polyethylene, 10-15 parts of linear low-density polyethylene, 1-2 parts of antistatic agent, 0.5-1 part of toughening agent and 0.1-0.3 part of color master batch; the preparation method comprises the following steps: the method comprises the following steps: preparing biodegradable additive, high-pressure low-density polyethylene, linear low-density polyethylene, antistatic agent, toughening agent and color master batch by weight; step two: adding high-pressure low-density polyethylene, linear low-density polyethylene, an antistatic agent, a toughening agent and color master batch into a stirrer for stirring, and adding a biodegradable additive in the stirring process to obtain a mixture; step three: and (5) putting the mixture obtained in the step two into a bubble film machine, extruding and then forming to obtain the bubble film. The invention has the advantages that the service life of the bubble film is prolonged, and the degradation speed of the abandoned bubble film is increased.)

1. The reinforced degradable bubble film is characterized by comprising the following raw materials in parts by weight: 70-80 parts of biodegradable additive, 15-20 parts of high-pressure low-density polyethylene, 10-15 parts of linear low-density polyethylene, 1-2 parts of antistatic agent, 0.5-1 part of toughening agent and 0.1-0.3 part of color master batch.

2. The reinforced degradable bubble film according to claim 1, wherein the biodegradable additive is an oxidative biodegradable additive.

3. The preparation method of the reinforced degradable bubble film is characterized by comprising the following steps of:

the method comprises the following steps: preparing biodegradable additive, high-pressure low-density polyethylene, linear low-density polyethylene, antistatic agent, toughening agent and color master batch by weight;

step two: adding the high-pressure low-density polyethylene, the linear low-density polyethylene, the antistatic agent, the toughening agent and the color master batch into a stirrer for stirring, and adding the biodegradable additive during stirring to obtain a mixture;

step three: and putting the mixture obtained in the step two into a bubble film machine, extruding and then forming to obtain the bubble film.

4. The method for preparing an enhanced degradable bubble film according to claim 3, wherein the stirring speed in the second step is 500-800r/min, and the stirring time is 35-55 min.

5. The method for preparing the reinforced degradable bubble film according to claim 3, wherein the forward rotation and the reverse rotation are alternately performed at a set time during the stirring by the stirrer in the second step.

6. The method for preparing the reinforced degradable bubble film according to claim 3, wherein the biodegradable additive is added 20min before the stirring in the second step.

7. The preparation method of the reinforced degradable bubble film according to claim 3, wherein the process temperature of each section during the extrusion of the bubble film machine in the third step is as follows: the charging section is 100 ℃ minus 120 ℃, the plasticizing section is 130 ℃ minus 150 ℃, and the homogenizing section is 160 ℃ minus 180 ℃.

8. The method for preparing the reinforced degradable bubble film according to the claim 3, wherein the molding temperature in the third step is 80-120 ℃.

Technical Field

The invention relates to the technical field of packaging materials, in particular to a reinforced degradable bubble film and a preparation method thereof.

Background

The Air Bubble Film (Air Bubble Film) is also called Air cushion Film, Air bead Film, Air Bubble cloth, Air Bubble paper, Air Bubble Film and Air cushion Film, is a pressure-proof, moisture-proof and shock-proof chemical product for packaging and filling, and has the advantages of good shock absorption, impact resistance, heat sealing property, no toxicity, no odor, moisture resistance, corrosion resistance, good transparency and the like; therefore, the bubble film is widely used for electronic product packaging, automobile part packaging, hardware product packaging and express product packaging.

The bubbles on the bubble film are used for preventing products from colliding in the transportation process, so that the buffering effect is achieved, but the existing bubble film is low in strength, when heavy objects are packaged, the bubbles are easily crushed by the heavy objects, the buffering effect is reduced, the transported products are likely to be damaged, and if the number of the bubble films is increased, the cost input is increased; meanwhile, the air bubble film needs longer degradation time after being discarded, pollution is generated, and the environment can be damaged;

in view of the above, there is a need for an improved method for preparing bubble membranes, which can meet the requirement of producing high-strength and degradable bubble membranes.

Disclosure of Invention

The invention aims to solve the problems and designs a reinforced degradable bubble film and a preparation method thereof.

The technical scheme of the invention is that the reinforced degradable bubble film is composed of the following raw materials in parts by weight: 70-80 parts of biodegradable additive, 15-20 parts of high-pressure low-density polyethylene, 10-15 parts of linear low-density polyethylene, 1-2 parts of antistatic agent, 0.5-1 part of toughening agent and 0.1-0.3 part of color master batch.

As a further illustration of the invention, the biodegradable additive is an oxidative biodegradable additive.

A preparation method of a reinforced degradable bubble film comprises the following steps:

the method comprises the following steps: preparing biodegradable additive, high-pressure low-density polyethylene, linear low-density polyethylene, antistatic agent, toughening agent and color master batch by weight;

step two: adding the high-pressure low-density polyethylene, the linear low-density polyethylene, the antistatic agent, the toughening agent and the color master batch into a stirrer for stirring, and adding the biodegradable additive during stirring to obtain a mixture;

step three: and putting the mixture obtained in the step two into a bubble film machine, extruding and then forming to obtain the bubble film.

As a further explanation of the invention, the stirring speed in the second step is 500-800r/min, and the stirring time is 35-55 min.

As a further explanation of the present invention, in the second step, the forward rotation and the reverse rotation are alternately performed for a set time while the stirrer stirs.

As a further illustration of the invention, in step two the biodegradable additive was added 20min before the end of the stirring.

As a further explanation of the invention, the process temperature of each section during the extrusion of the bubble film machine in the third step is as follows: the charging section is 100 ℃ minus 120 ℃, the plasticizing section is 130 ℃ minus 150 ℃, and the homogenizing section is 160 ℃ minus 180 ℃.

As a further illustration of the invention, the molding temperature in the third step is 80-120 ℃.

The preparation method has the advantages that the raw materials are biodegradable additive, high-pressure low-density polyethylene, linear low-density polyethylene, antistatic agent, toughening agent and color master batch, the bubble film is obtained by weighing, stirring and molding the raw materials in sequence during preparation, the preparation method is simple to operate, the practicability is high, the obtained bubble film is excellent in mechanical property and buffering property, the service life of the bubble film is prolonged, the packaged product is prevented from being damaged, the biodegradable additive is added during preparation of the bubble film, the bubble film can be better degraded, the degradation speed is increased, and the environment is protected to a certain extent.

Drawings

FIG. 1 is a schematic process flow diagram of the present invention;

Detailed Description

Because the requirement on packaging of the air bubble film is higher and higher at present, the air bubble film produced by the existing production process has low strength, is easy to crush and damage products, and meanwhile, the waste air bubble film is difficult to degrade and damage the environment, a reinforced degradable air bubble film and a preparation method thereof are designed, and the technical scheme of the invention is explained in detail according to the attached drawings;

a reinforced degradable bubble film and a preparation method thereof are disclosed, the preparation method comprises the following steps:

the method comprises the following steps: weighing raw materials by weight, specifically 70-80 parts of biodegradable additive, 15-20 parts of high-pressure low-density polyethylene, 10-15 parts of linear low-density polyethylene, 1-2 parts of antistatic agent, 0.5-1 part of toughening agent and 0.1-0.3 part of color master batch, wherein the biodegradable additive is optimally an oxidation type biodegradable additive;

step two: adding high-pressure low-density polyethylene, linear low-density polyethylene, an antistatic agent, a toughening agent and color master batch into a stirrer for stirring, wherein the stirring speed is 500 plus 800r/min, the stirring time is 35-55min, forward rotation and reverse rotation are alternately performed every five minutes during stirring, and a biodegradable additive is added 20min before the stirring is finished to obtain a mixture, wherein the forward rotation and the reverse rotation are alternately performed to make the ingredients more uniform, so that the toughness of the product is improved;

step three: putting the mixture obtained in the step two into a bubble film machine, extruding and then forming, wherein the process temperature of each section during extrusion is as follows: the charging section is 100-120 ℃, the plasticizing section is 130-150 ℃, the homogenizing section is 160-180 ℃, and the forming temperature is 80-120 ℃ to prepare the bubble film.

In order to facilitate the understanding of the invention by those skilled in the art, the invention will be further illustrated by the following examples.

Example 1.

The method comprises the following steps: weighing raw materials by weight, specifically 70 parts of oxidation type biodegradable additive, 15 parts of high-pressure low-density polyethylene, 10 parts of linear low-density polyethylene, 1 part of antistatic agent, 0.5 part of toughening agent and 0.1 part of color master batch;

step two: adding high-pressure low-density polyethylene, linear low-density polyethylene, an antistatic agent, a toughening agent and color master batch into a stirrer for stirring, wherein the stirring speed is 500r/min, the stirring time is 35min, forward rotation and reverse rotation are alternately performed every five minutes during stirring, and a biodegradable additive is added 20min before the stirring is finished to obtain a mixture;

step three: putting the mixture obtained in the step two into a bubble film machine, extruding and then forming, wherein the process temperature of each section during extrusion is as follows: the charging section is 100 ℃, the plasticizing section is 130 ℃, the homogenizing section is 160 ℃, and the forming temperature is 80 ℃ to prepare the bubble film.

Example 2.

The method comprises the following steps: weighing raw materials by weight, specifically 75 parts of oxidation type biodegradable additive, 18 parts of high-pressure low-density polyethylene, 13 parts of linear low-density polyethylene, 1.5 parts of antistatic agent, 0.8 part of toughening agent and 0.2 part of color master batch;

step two: adding high-pressure low-density polyethylene, linear low-density polyethylene, an antistatic agent, a toughening agent and color master batch into a stirrer for stirring, wherein the stirring speed is 700r/min, the stirring time is 40min, forward rotation and reverse rotation are alternately performed every five minutes during stirring, and a biodegradable additive is added 20min before the stirring is finished to obtain a mixture;

step three: putting the mixture obtained in the step two into a bubble film machine, extruding and then forming, wherein the process temperature of each section during extrusion is as follows: the charging section is 110 ℃, the plasticizing section is 140 ℃, the homogenizing section is 170 ℃, and the forming temperature is 100 ℃ to prepare the bubble film.

Example 3.

The method comprises the following steps: weighing raw materials by weight, specifically 80 parts of oxidation type biodegradable additive, 15 parts of high-pressure low-density polyethylene, 10 parts of linear low-density polyethylene, 1.5 parts of antistatic agent, 0.8 part of toughening agent and 0.2 part of color master batch;

step two: adding high-pressure low-density polyethylene, linear low-density polyethylene, an antistatic agent, a toughening agent and color master batch into a stirrer for stirring, wherein the stirring speed is 800r/min, the stirring time is 40min, forward rotation and reverse rotation are alternately performed every five minutes during stirring, and a biodegradable additive is added 20min before the stirring is finished to obtain a mixture, wherein the forward rotation and the reverse rotation are alternately performed to make the ingredients more uniform, so that the toughness of the product is improved;

step three: putting the mixture obtained in the step two into a bubble film machine, extruding and then forming, wherein the process temperature of each section during extrusion is as follows: the charging section is 110 ℃, the plasticizing section is 140 ℃, the homogenizing section is 170 ℃, and the forming temperature is 90 ℃ to prepare the bubble film.

Example 4.

The method comprises the following steps: weighing raw materials by weight, specifically 80 parts of oxidation type biodegradable additive, 20 parts of high-pressure low-density polyethylene, 15 parts of linear low-density polyethylene, 2 parts of antistatic agent, 1 part of toughening agent and 0.3 part of color master batch;

step two: adding high-pressure low-density polyethylene, linear low-density polyethylene, an antistatic agent, a toughening agent and color master batch into a stirrer for stirring, wherein the stirring speed is 800r/min, the stirring time is 55min, forward rotation and reverse rotation are alternately performed every five minutes during stirring, and a biodegradable additive is added 20min before the stirring is finished to obtain a mixture;

step three: putting the mixture obtained in the step two into a bubble film machine, extruding and then forming, wherein the process temperature of each section during extrusion is as follows: the charging section is 120 ℃, the plasticizing section is 150 ℃, the homogenizing section is 180 ℃, and the forming temperature is 120 ℃ to prepare the bubble film.

A bubble film was randomly purchased in the market, and the bubble films obtained as the comparative example and the above three examples were subjected to the performance test, and the results are shown in the following table:

	elongation (%)	Tensile Strength (MPa)	Tear Strength (kN/m)
				Example 1	12	23	56
Example 2	9	25	52
				Example 3	10	24	53
Example 4	11	22	54
				Comparative example	3	15	40

The table shows that the performances of the examples 1-3 are obviously higher than those of the comparative examples, the bubble film prepared by the invention has excellent mechanical property and excellent buffering property, the service life of the bubble film is prolonged, the damage of a packaged product is avoided, and the biodegradation additive is added when the bubble film is prepared, so that the bubble film can be better degraded, the degradation speed is increased, and the bubble film has a certain protection effect on the environment; the preparation method provided by the invention is simple to operate and high in practicability.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.