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Plastic food box preparation method

A food box and plastic technology, applied in the field of food packaging, can solve the problems of high temperature resistance and difficult degradation of plastic food boxes, and achieve the effect of good high temperature stability and environmental protection.

Inactive Publication Date: 2015-08-05
柳州蔚园塑料彩印包装有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for preparing a plastic food box, which can solve the problem that the existing plastic food box is not resistant to high temperature and difficult to degrade

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This plastic food box preparation method adopts the raw material of following weight to make:

[0020] Polypropylene: 56 kg; Bagasse Fiber: 32 kg; Corn Starch: 5 kg; Nanoclay: 5 kg; Calcium Oxide: 10 kg; Calcium Carbonate: 12 kg; Sodium Bicarbonate: 12 kg;

[0021] Including the following steps:

[0022] A. Cutting and grinding the bagasse fiber to obtain 70 mesh bagasse powder for use;

[0023] B. Mixing: put polypropylene, bagasse powder, cornstarch, and nano clay into a mixer, and stir for 5 minutes at a speed of 6000 rpm to obtain a mixture;

[0024] C. Plasticizing and kneading: Put the mixture prepared in step B and calcium oxide, calcium carbonate, and sodium bicarbonate into the hopper of the plastic extruder, first turn on the power supply of the heating unit of the plastic extruder, and extrude the plastic The temperature of the machine was raised to 160°C, and then the screw was started to rotate for 70 minutes to obtain the molten material;

[0025] D....

Embodiment 2

[0029] This plastic food box preparation method adopts the raw material of following weight to make:

[0030] Polypropylene: 65 kilograms; Bagasse fiber: 45 kilograms; Cornstarch: 12 kilograms; Nano clay: 12 kilograms; Calcium oxide: 20 kilograms; Calcium carbonate: 25 kilograms; Sodium bicarbonate: 25 kilograms; All the other are with embodiment one same.

Embodiment 3

[0032] This plastic food box preparation method adopts the raw material of following weight to make:

[0033] Polypropylene: 59 kilograms; Bagasse fiber: 36 kilograms; Cornstarch: 8 kilograms; Nano clay: 8 kilograms; Calcium oxide: 13 kilograms; Calcium carbonate: 18 kilograms; Sodium bicarbonate: 18 kilograms; same.

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Abstract

The invention discloses a plastic food box preparation method, and relates to the technical field of food packaging. Raw materials include, by weight, 56-65 parts of polypropylene, 32-45 parts of bagasse fibers, 5-12 parts of corn starch, 5-12 parts of nano-clay, 10-20 parts of calcium oxide, 12-25 parts of calcium carbonate and 12-25 parts of sodium hydrogen carbonate. The method includes the steps: A, grinding the bagasse fibers into powder; B, mixing the polypropylene, the bagasse powder, the corn starch and the nano-clay into mixed materials; C, placing the mixed materials, the calcium oxide, the calcium carbonate and the sodium hydrogen carbonate into a plastic extruding machine for plasticizing and mixing to obtain molten materials; D, filling carbon dioxide gas into the molten materials to obtain foaming materials; E, extruding the foaming materials from the plastic extruding machine, and pressing the foaming materials into a plate; F, performing heating and plastic molding. The plastic food box preparation method can solve the problem that an existing plastic food box cannot resist high temperature and is difficultly degraded.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a method for preparing a plastic box for food. Background technique [0002] With the acceleration of the pace of life, disposable plastic food boxes are widely used. The existing plastic food boxes are made of polystyrene, which is foamed by adding ethane after high-temperature melting, but this material The disposable tableware made has the following problems: 1. It is not resistant to high temperature. When the temperature reaches 65°C, the harmful substances in this plastic tableware will penetrate into the food, which is harmful to the human liver, kidney and central nervous system. 2. It is difficult to degrade and causes white pollution to the environment. Therefore, it is an urgent problem for those skilled in the art to provide a non-toxic, harmless, high temperature resistant, easily degradable and environmentally friendly plastic food box. Contents of the inve...

Claims

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Application Information

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IPC IPC(8): C08J9/12C08L23/12C08L97/02C08L3/02C08K3/00C08K3/34C08K3/22C08K3/26
Inventor 李国华
Owner 柳州蔚园塑料彩印包装有限责任公司
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