Preparation method for plastic packing box

Abstract

The invention discloses a preparation method for a plastic packing box. The preparation method comprises the following steps that 1) polylactic acid, hydrolyzed starch, polyvinyl chloride, kieselguhr,nanometer calcium carbonate, a coupling agent, sodium bicarbonate, borax, calcium stearate and clear water are stirred and mixed for 20-30 minutes, and then the mixture is added into a reaction stilland stirred for 30-35 minutes at the temperature of 50-55 DEG C; 2) after stirring, the mixture is subjected to standing for 10 minutes, then pentaerythritol, epoxidized soybean oil, talcum powder, agar, an anti-aging agent and an auxiliary agent are added and continuously stirred for 30-40 minutes; 3) after stirring, the mixture is subjected to standing for 10 minutes, then the auxiliary agent is heated to 60-65 DEG C, and the mixture is stirred and mixed for 2-2.5 hours; 4) the stirred mixed mixture is taken out and placed in a water groove for cooling shaping, then demolding is conducted,and the environmentally friendly plastic packing box is obtained. The preparation method has the advantages that the packing box is safe and non-toxic, meets the green and environmentally friendly concept and is quite suitable for food packaging, and the method is simple and practical, improves the production rate and reduces cost.

Description

technical field [0001] The invention relates to a preparation method of a plastic packaging box, belonging to the technical field of plastic packaging boxes. Background technique [0002] With the rapid development of the food processing industry, the required packaging is increasing day by day. The food packaging is in direct contact with the food. Whether the material is selected properly or not is directly related to people's health. There are still improper phenomena in the production, processing and use of packaging materials in our country. Food packaging materials sold in the market include paper, plastic, metal, ceramics, etc. Among them, paper and plastic are the most used, and their safety is worth exploring. Nowadays, many plastic packaging boxes are disposable, and some plastic packaging boxes often contain toxins because their ingredients are too simple, so when packaging food and other products that can directly contact with the human body, there will often be...

AI Technical Summary

Problems solved by technology

Nowadays, many plastic packaging boxes are disposable, and some plastic packaging boxes often contain toxins because their ingredients are too simple, so when packaging food and other products that can directly contact with the human body, damage to the human body often occurs. Longevity is a very serious issue for businesses

Moreover, the preparation of the prior art plastic packaging box is more complicated, more time-consuming and laborious, and the cost is higher