阅读说明：本技术 一种可降解环保袋及制备方法 (degradable environment-friendly bag and preparation method thereof ) 是由 蔡任文 于 2019-09-05 设计创作，主要内容包括：本发明提供了一种可降解环保袋及制备方法,一种可降解环保袋包括如下质量百分比的组分：30～60%碳酸钙,39～48%聚乙烯,0.5～1%降解添加剂,0.5～1%色种。本发明还提供了一种方法,用于制备上述的可降解环保袋,本发明在制备过程中,通过调节加入的聚乙烯的具体组分,在完全不用丙烯树脂的情况下得到了一种可以降解的环保材料,并在环保材料中加入了降解添加剂,使得降解速率显著的提升。(the invention provides a degradable environment-friendly bag and a preparation method thereof, wherein the degradable environment-friendly bag comprises the following components in percentage by mass: 30-60% of calcium carbonate, 39-48% of polyethylene, 0.5-1% of degradation additive and 0.5-1% of color seeds. The invention also provides a method for preparing the degradable environment-friendly bag, and in the preparation process, the degradable environment-friendly material is obtained under the condition of completely not using propylene resin by adjusting the specific components of the added polyethylene, and the degradation rate is obviously improved by adding the degradation additive into the environment-friendly material.)

1. The degradable environment-friendly bag is characterized by comprising the following components in percentage by mass:

30 to 60 percent of calcium carbonate,

39-48% of polyethylene,

0.5 to 1% of a degradation additive,

0.5-1% of color seeds.

2. The degradable reusable bag according to claim 1, comprising the following components in percentage by mass:

30 to 50% of calcium carbonate,

45-48% of polyethylene,

0.5 to 1% of a degradation additive,

0.5-1% of color seeds.

3. the degradable reusable bag according to claim 1, comprising the following components in percentage by mass:

50 percent of calcium carbonate,

48% of polyethylene, and (C) a polyethylene,

1 percent of a degradation additive, namely,

1% of color seeds.

4. The degradable reusable bag according to claim 1, 2 or 3, wherein the polyethylene comprises the following components in percentage by mass:

60 to 70% of linear low density polyethylene,

30-40% of high density polyethylene.

5. the degradable reusable bag according to claim 1, 2 or 3, wherein the degradation additive comprises the following components in percentage by mass:

20-50% of furanone

20-30% of valeric acid

5-10% of catalyst

20-50% acetic acid.

6. the degradable reusable bag according to claim 5, wherein the catalyst is polycaprolactone.

7. The degradable reusable bag according to claim 5, wherein said acetic acid is glycolic acid.

8. The degradable reusable bag according to claim 1, 2 or 3, wherein said color species is a colorant.

9. the preparation method of the degradable environment-friendly bag is characterized by comprising the following steps:

1) weighing calcium carbonate, linear low density polyethylene, high density polyethylene, degradation additive and colorant for later use,

2) adding the calcium carbonate, the linear low-density polyethylene, the high-density polyethylene, the degradation additive and the colorant in the step 1) into a stirrer, stirring for 10min,

3) Placing the mixed raw materials into a co-extrusion film blowing machine, heating to 150 ℃ and 170 ℃, and blowing the material film by using the film blowing machine at the constant temperature of 150 ℃ after 20 min;

4) after the step 3) is finished, cooling and edge pressing are carried out on the blown-out material film;

5) And after the step 4) is finished, adding the material film into a bag making machine according to the size of the recycle bags to make the recycle bags.

Technical Field

The invention relates to the technical field of degradable environment-friendly bags, in particular to a degradable environment-friendly bag and a preparation method thereof.

Background

the degradable plastic bag is a disposable shopping bag which is degradable and easy to degrade. The light degradable plastic bag is mainly made of polyethylene plastic and mineral powder such as light degradation agent, calcium carbonate and the like, and is also called as a light degradable plastic bag.

in the prior art, for example, publication numbers are: "CN 108570174A" discloses a green environment-friendly bag and a processing technology thereof, and the green environment-friendly bag comprises the following raw materials by mass percent: 20-30% of polyethylene, 10-20% of propylene resin, 10-15% of linear polyethylene, 10-13% of short-chain cellulose, 50-65% of calcium carbonate powder, 1-3% of inorganic powder, 1-3% of high-filling powder, 1-3% of setting agent and 1-5% of softening agent, wherein the calcium carbonate powder consists of 65% of calcium carbonate particles, 15% of tough particles, 2% of defoaming agent and 3% of filling particles.

the material comprises the propylene resin which is a thermoplastic or thermosetting resin coating, and in the preparation of the recycle bags, the propylene resin has good physical and mechanical properties, excellent weather resistance, chemical resistance and water resistance and high gloss and color retention, and is mainly used for preparing green recycle bags, but the propylene resin has certain harmfulness.

disclosure of Invention

in view of the above, the present invention provides a degradable reusable bag and a method for manufacturing the same.

The invention adopts the following technical scheme:

the degradable environment-friendly bag comprises the following components in percentage by mass:

30 to 60 percent of calcium carbonate,

39-48% of polyethylene,

0.5 to 1% of a degradation additive,

0.5-1% of color seeds.

Preferably, the composition comprises the following components in percentage by mass:

30 to 50% of calcium carbonate,

45-48% of polyethylene,

0.5 to 1% of a degradation additive,

0.5-1% of color seeds.

Preferably, the composition comprises the following components in percentage by mass:

50 percent of calcium carbonate,

48% of polyethylene, and (C) a polyethylene,

1 percent of a degradation additive, namely,

1% of color seeds.

preferably, the polyethylene comprises the following components in percentage by mass:

60 to 70% of linear low density polyethylene,

30-40% of high density polyethylene.

preferably, the degradation additive comprises the following components in percentage by mass:

20-50% of furanone

20-30% of valeric acid

5-10% of catalyst

20-50% acetic acid.

Preferably, the catalyst is polycaprolactone.

Preferably, the acetic acid is glycolic acid.

Preferably, the color species is a colorant.

The invention also provides a preparation method of the degradable environment-friendly bag, which comprises the following steps:

1) weighing calcium carbonate, linear low density polyethylene, high density polyethylene, degradation additive and colorant for later use,

2) Adding the calcium carbonate, the linear low-density polyethylene, the high-density polyethylene, the degradation additive and the colorant in the step 1) into a stirrer, stirring for 10min,

3) placing the mixed raw materials into a co-extrusion film blowing machine, heating to 150 ℃ and 170 ℃, and blowing the material film by using the film blowing machine at the constant temperature of 150 ℃ after 20 min;

4) after the step 3) is finished, cooling and edge pressing are carried out on the blown-out material film;

5) and after the step 4) is finished, adding the material film into a bag making machine according to the size of the recycle bags to make the recycle bags.

has the advantages that:

in the preparation process, the degradable environment-friendly material is obtained under the condition of completely not using propylene resin by adjusting the specific components of the added polyethylene, and the degradation additive is added into the environment-friendly material, so that the degradation rate is obviously improved.

Detailed Description

in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.