WO2012094917A1

WO2012094917A1 - Preparation method for degradable packaging material

Info

Publication number: WO2012094917A1
Application number: PCT/CN2011/081345
Authority: WO
Inventors: 杨辉雄
Original assignee: Yang Huixiong
Priority date: 2011-01-14
Filing date: 2011-10-26
Publication date: 2012-07-19
Also published as: CN102220024B; CN102220024A

Abstract

Provided is a preparation method for a degradable packaging material; the method comprises using rice hulls, corn bones and recycled plastics as base materials, and then manufacturing the finished product by the steps of providing materials, grinding, mixing and sterilizing, kneading, granulating, extrusion moulding, and plastic-suction and forming, etc. The degradable packaging material prepared by this method has many advantages, such as low cost, full use of resources, and being environmentally friendly. In addition, during the preparation process, chemical changes will occur, so that a highly mixed microstructure is formed in the finished product, which gives the finished product a relatively good mechanical strength, flexibility and thermal resistance properties.

Description

Method for preparing degradable packaging material

Technical field

The invention relates to the field of materials, in particular to a degradable material.

Background technique

With the continuous spread of the concept of environmental protection and resource conservation, the disposal of plastic waste is very problematic.

Great concern, technology in the field of plastic waste disposal has also been strongly supported, especially since it can be

The boundary absorbs the digested biodegradable plastic material. Biodegradable resinous material, according to its violence

It is divided into several types depending on the action of microorganisms in soil or water: microbial fermentation product type, starch

Doped type, chemically synthesized type, and polylactic acid type.

technical problem

Generally used for packaging, whether it is electrical appliances, home appliances, items that need to be supported by boxes, or beverage containers.

Etc., it is necessary to make a material that can support the packaging of goods, such materials are plastic materials, paper

Quality or other materials, some of which can be reused but costly, such as paper;

Some are inexpensive, but they cannot be decomposed in the soil, which can cause environmental pollution and are not environmentally friendly.

Plastic material. Therefore, inventing a low cost and degradable packaging material has a very high price.

value.

Technical solution

In view of the above problems, the present invention provides a natural food waste portion and recycled plastic.

A method of preparing a packaging material having degradability.

The technical solution of the present invention for achieving the above object:

A method for preparing a degradable packaging material, which is based on rice husks, corn bones and recycled plastics.

Includes the following steps:

= 1 \* roman i . Grinding the rice husk, corn bone and recycled plastic substrate into granules;

= 2 \* roman ii . The above granular husk, corn bone and recycled plastic were respectively weight ratio 3:1:1

Mixing and adding a fungicide for sterilization;

= 3 \* roman iii . Add in mixed and sterilized rice husk, corn bone and recycled plastic mixed substrate

Add lubricant and knead into a dough;

= 4 \* roman iv . Putting the above-mentioned pellet substrate into a granulator to form a strip, and then cutting into pellets;

= 5 \* roman v . Will step i = 5 \* roman v . The granules made in the mold are heated in a molding machine

Extruded into a substrate;

= 6 \* roman vi . The shape is blister-shaped when the substrate is in a soft state.

You can also have the following steps:

= 7 \* roman vii . Print the pattern on the surface of the product.

The recycled plastic substrate is made of polyethylene terephthalate.

Step = 1 \* roman i . The medium particle size after grinding is 200 mesh.

An aperture groove is arranged in the center of the substrate, and the aperture is 1 mm.

Beneficial effect

Advantageous effects and advantages of the present invention:

The invention provides a method for preparing a degradable packaging material, which utilizes rice husk, corn bone and back

Plastic is used as a substrate, in which rice husks and corn bones are inedible parts of natural foods, in life.

It is waste and is often treated as garbage. Such substrates are easy to obtain and low in cost.

And it is easy to decompose in soil or water, and it will not pollute the environment; the recycled plastic is poly-p-phenylene

Ethylene glycolate (PET), which has the characteristics of easy degradation, low melting point and good strength.

The degradable packaging material of the present invention made of the three substrates has low cost and sufficient profit

Use resources, environmental friendliness and many other advantages; in addition, chemical changes will occur during the preparation process,

Forming a highly mixed microstructure in the finished product to give the finished product better mechanical strength, softness and resistance

Thermal properties.

DRAWINGS

Figure 1. Schematic diagram of the process of the present invention.

Figure 2. Schematic representation of the finished product 1 produced by the process of the invention.

Figure 3. Schematic representation of the finished product 2 produced by the process of the invention.

BEST MODE FOR CARRYING OUT THE INVENTION

In order to make the objects, technical solutions and advantages of the present invention more clear, the following is described in conjunction with the accompanying drawings.

For example, the present invention will be described in detail in this embodiment. It should be understood that the specific implementation described herein

The examples are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a preparation method of a degradable packaging material, which adopts rice husk, corn bone and recycled plastic

The material is a substrate.

Traditionally, rice husks are regarded as garbage. After rice is ground into rice, rice husks are burned or buried due to rice.

The shell contains a large amount of antimony, by removing inorganic substances, fibers and impurities, and burning to remove carbon components.

Formula, extracting cerium oxide from rice husk, which accounts for about one-fifth of the rice husk, while cerium oxide is produced.

An indispensable additive for rubber and plastics, which increases the strength and transparency of plastics;

In addition, corn bone contains starch, cellulose, etc., while starch is a decomposable substance, and its cellulose is in the knot.

The strength of the joint can be increased in the structure, and the recycled plastic is mainly composed of PET having a low melting point and a good strength.

Please refer to Figure 1, the production steps are as follows:

i. Grinding. The rice husk, corn bone and recycled plastic substrate are ground and ground to a particle size of 200 mesh.

under.

Ii. Mixed sterilization. The above-mentioned granular rice husk, corn bone and recycled plastic are ratio of 3:1:1 by weight.

Mixing is carried out, and a sterilizing agent is added to sterilize the mixed substrate.

Iii. Kneading. Add lubricant to the mixed and sterilized rice husk, corn bone and recycled plastic so that

It is kneaded and bonded into a dough.

Iv. Granulation. The base material of the above kneaded mass is placed in a granulator to form a strip, which is then cut into pellets.

v. Extrusion molding. The granules produced in the granulation step are placed in a molding machine and heated and extruded to form a base.

The plate is formed with the substrate formed according to the mold, and a plurality of holes having a hole diameter of 1 mm are arranged in the center. The slot

In addition to reducing weight, it also has the function of increasing or decreasing strength. The hole groove can be circular or rectangular

Or other irregular shapes as shown in the finished product 1 in Fig. 2 and the finished product 2 in Fig. 3.

Vi. Blister shaping. When the substrate is in a hot soft state, the substrate is molded by a mold and a vacuum suction method.

The shape is shaped to produce a finished product of a degradable packaging material of a predetermined shape.

In addition to the above steps, you can also have vii. Step: printing the pattern on the surface of the above finished product to increase the finished product

Aesthetic.

The following chemical changes occur during the production process: rice ash is ashed into cerium oxide compounds, corn bones and recycling

The plastic will deteriorate into organic compounds of different molecular weights, which contain a highly unsaturated group -C=C-,

In a high temperature environment, the two are further combined into an organic (polymer) inorganic (cerium oxide) mixed material.

Material, the structure of the material contains organic microstructure and inorganic microstructure, forming a highly mixed microstructure, with

The superiority of the organic-inorganic hybrid material, such as high mechanical strength, high softness, and good heat resistance.

The above is only the preferred embodiment of the present invention and is not intended to limit the invention, and is in the present invention.

Any modifications, equivalent substitutions and improvements made within the spirit and principles shall be included in the present invention.

Within the scope of protection.

Embodiments of the invention

Industrial applicability

Sequence table free content

Claims

A method for preparing a degradable packaging material, which comprises rice husk, corn bone and recycled plastic

The substrate is characterized in that it comprises the following steps:

i. Grinding the rice husk, corn bone and recycled plastic substrate into granules;

Ii. The above granular rice husks, corn bones and recycled plastics were respectively carried out at a weight ratio of 3:1:1.

Mixing and adding a fungicide for sterilization;

Iii. Add in mixed and sterilized rice husk, corn bone and recycled plastic mixed substrate

Lubricant and kneaded into a dough;

Iv. Putting the above-mentioned pellet substrate into a granulator to form a strip, and then cutting into pellets;

v. Step iv. The granules prepared in the mold are placed in a molding machine and heated and extruded into a substrate;

Vi. The shape is blister-shaped when the substrate is in a soft state.
The method for preparing a degradable packaging material according to claim 1, characterized in that

In: the step vi. It also includes the following steps:

Vii. Print the pattern on the finished surface.
The method for preparing a degradable packaging material according to claim 1, characterized in that

Wherein: the recycled plastic substrate is made of polyethylene terephthalate.
The method for preparing a degradable packaging material according to claim 1, characterized in that

In: Step i. The medium particle size after grinding was 200 mesh.
The method for preparing a degradable packaging material according to claim 1, characterized in that

The hole is arranged in the center of the substrate, and the hole diameter is 1 mm.