阅读说明：本技术 一种果实运输用epe珍珠棉的制备方法 (Preparation method of EPE pearl cotton for fruit transportation ) 是由 徐笑笑 李烨 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种果实运输用EPE珍珠棉的制备方法,包括以下操作步骤：(1)将肉桂精油、甘油混合均匀后,制得肉桂精油溶液,将肉桂精油溶液与醋酸酯淀粉混合搅拌均匀后,制得抗菌醋酸酯淀粉；(2)将硅藻土、混晶二氧化钛加入至球磨机中,进行球磨处理后,制得成核剂；(3)将低密度聚乙烯、聚乙烯蜡、抗收缩剂、抗菌醋酸酯淀粉、成核剂混合均匀后,加入至发泡机中,加热至低密度聚乙烯完全融化后,向其中加入发泡剂,然后进行牵引定型、冷却、延展、收卷处理后,得到果实运输用EPE珍珠棉。本发明制得的EPE珍珠棉,具有优异的透气性能和抗菌效果,极大地延长了内部水果的保存时间。(The invention discloses a preparation method of EPE pearl cotton for fruit transportation, which comprises the following operation steps: (1) mixing cinnamon essential oil and glycerol uniformly to prepare a cinnamon essential oil solution, and mixing and stirring the cinnamon essential oil solution and acetate starch uniformly to prepare antibacterial acetate starch; (2) adding diatomite and mixed crystal titanium dioxide into a ball mill, and performing ball milling treatment to obtain a nucleating agent; (3) uniformly mixing low-density polyethylene, polyethylene wax, an anti-shrinkage agent, antibacterial acetate starch and a nucleating agent, adding the mixture into a foaming machine, heating until the low-density polyethylene is completely melted, adding a foaming agent into the mixture, and then carrying out traction shaping, cooling, extension and rolling treatment to obtain the EPE pearl cotton for fruit transportation. The EPE pearl cotton prepared by the invention has excellent air permeability and antibacterial effect, and greatly prolongs the storage time of internal fruits.)

1. A preparation method of EPE pearl cotton for fruit transportation is characterized by comprising the following operation steps:

(1) mixing cinnamon essential oil and glycerol uniformly to prepare a cinnamon essential oil solution, and mixing and stirring the cinnamon essential oil solution and acetate starch uniformly to prepare antibacterial acetate starch;

(2) adding diatomite and mixed crystal titanium dioxide into a ball mill, and performing ball milling treatment to obtain a nucleating agent;

(3) uniformly mixing 180-200 parts by weight of low-density polyethylene, 30-40 parts by weight of polyethylene wax, 1-5 parts by weight of anti-shrinking agent, 3-6 parts by weight of antibacterial acetate starch and 2-8 parts by weight of nucleating agent, adding the mixture into a foaming machine, heating until the low-density polyethylene is completely melted, adding 15-20 parts by weight of foaming agent, and after foaming is completed, carrying out traction shaping, cooling, extension and rolling treatment to obtain the EPE pearl cotton for fruit transportation.

2. The method for preparing EPE pearl wool for fruit transportation according to claim 1, wherein in the step (1), the mass ratio of cinnamon essential oil to glycerin is 1: 5-8.

3. The method for preparing EPE pearl wool for fruit transportation according to claim 2, wherein in the step (1), the mass ratio of the cinnamon essential oil solution to the acetate starch is 1: 15-20.

4. The method for preparing EPE pearl wool for fruit transportation according to claim 1, wherein in the step (2), the mass ratio of the diatomite to the mixed crystal titanium dioxide is 1: 3-6.

5. The method for preparing EPE pearl wool for fruit transportation according to claim 1, wherein in the step (2), the ball milling medium is 75% by weight of ethanol aqueous solution during ball milling treatment.

6. The method for preparing EPE pearl wool for fruit transportation according to claim 1, wherein in the step (3), the anti-shrinking agent is polyoxyethylene alkylolamide.

Technical Field

The invention relates to the technical field of preparation of packaging materials, in particular to a preparation method of EPE pearl cotton for fruit transportation.

Background

Because the EPE pearl wool foaming material is a novel environment-friendly packaging and filling material. Its superior characteristics are increasingly recognized, and its use is therefore expanding and innovative. Especially in the aspect of packaging and other industrial materials, the material has better performance, lower cost, higher grade, elegant appearance and better effect compared with the traditional materials. In addition, the method has wide application in the field of agricultural and sideline product packaging materials.

However, when the existing EPE pearl cotton is used as a packaging material for some fruits, the fruits have short shelf life due to poor air permeability and no antibacterial effect, and the fruits are often rotten due to plant diseases and insect pests in the EPE pearl cotton packaging material.

Disclosure of Invention

In order to solve the technical problems and prolong the fresh-keeping time of fruits in the EPE pearl cotton packaging material, the invention provides a preparation method of EPE pearl cotton for fruit transportation.

The invention is realized by the following technical scheme:

a preparation method of EPE pearl cotton for fruit transportation comprises the following operation steps:

(1) mixing cinnamon essential oil and glycerol uniformly to prepare a cinnamon essential oil solution, and mixing and stirring the cinnamon essential oil solution and acetate starch uniformly to prepare antibacterial acetate starch;

(2) adding diatomite and mixed crystal titanium dioxide into a ball mill, and performing ball milling treatment to obtain a nucleating agent;

(3) uniformly mixing 180-200 parts by weight of low-density polyethylene, 30-40 parts by weight of polyethylene wax, 1-5 parts by weight of anti-shrinking agent, 3-6 parts by weight of antibacterial acetate starch and 2-8 parts by weight of nucleating agent, adding the mixture into a foaming machine, heating until the low-density polyethylene is completely melted, adding 15-20 parts by weight of foaming agent, and after foaming is completed, carrying out traction shaping, cooling, extension and rolling treatment to obtain the EPE pearl cotton for fruit transportation.

Specifically, in the step (1), the mass ratio of the cinnamon essential oil to the glycerol is 1: 5-8.

Specifically, in the step (1), the mass ratio of the cinnamon essential oil solution to the acetate starch is 1: 15-20.

Specifically, in the step (2), the mass ratio of the diatomite to the mixed crystal titanium dioxide is 1: 3-6.

Specifically, in the step (2), during the ball milling treatment, the ball milling medium is an ethanol aqueous solution with a mass fraction of 75%.

Specifically, in the step (3), the antishrinking agent is polyoxyethylene alkylolamide.

According to the technical scheme, the beneficial effects of the invention are as follows:

the EPE pearl cotton prepared by the invention has excellent processing performance, is convenient to cut and process into packaging materials with various shapes, has excellent air permeability and antibacterial effect, and greatly prolongs the storage time of internal fruits. The antibacterial acetate starch prepared by the invention is non-toxic and environment-friendly, is easy to degrade in nature, especially has an excellent antibacterial effect, can obviously inhibit germs from multiplying and reproducing on the surface of the antibacterial acetate starch, and further effectively reduces the probability that fruits inside the packaging material are damaged by plant diseases and insect pests; meanwhile, the prepared antibacterial acetate starch can effectively improve the whiteness of the EPE pearl cotton, so that the appearance of the EPE pearl cotton packaging material is effectively improved, and the quality of the EPE pearl cotton packaging material is improved; the nucleating agent prepared by the invention can effectively improve the uniformity of bubble distribution in the EPE pearl cotton, can improve the oxygen permeability of the EPE pearl cotton, ensures that certain oxygen and carbon dioxide with higher concentration exist in the packaging material, enables fruits and vegetables to keep lower respiration in the packaging material, and further effectively improves the fresh-keeping effect of the fruits and vegetables.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.