Craft bottle one-step forming technology

Abstract

The invention discloses a craft bottle one-step forming technology. The technology comprises the steps that a PET raw material is dehumidified and dried to prevent the PET raw material from being heated and hydrolyzed in the following technology because of too high humidity, the PET raw material is heated and uniformly plasticized at the appropriate temperature to prevent generation of too much acetaldehyde, appropriate pressure can ensure to obtain the ideal bottle green body transparency, rapid cooling can improve the production efficiency and prevent the cooling speed from being low to cause decreasing of the transparency of the bottle green body, bottle shaping can be ensured by using the correct extension ratio and air pressure at the correct bottle green body temperature, the shrinkage rate of the bottle is reduced, finally slow decompression is conducted to open the mold to take out the bottle, the safety in the mold opening process is ensured, the defective rate can be reducedby testing the bottle twice, the middle procedure that heating is conducted after cooling is omitted by adopting the one-step production technology in the injection molding process, accordingly the energy consumption is lowered, the logistics links are reduced, and meanwhile, the manpower labor intensity is relieved.

Description

technical field [0001] The invention specifically relates to a one-step forming process of a craft bottle. Background technique [0002] Plastic bottles are mainly made of materials such as polyethylene or polypropylene with the addition of various organic solvents. Polyester (PET), polyethylene (PE) and polypropylene (PP) are widely used as raw materials for plastic bottles. After adding corresponding organic solvents, after high temperature heating, they are blown, extruded, or injection molded through plastic molds. plastic container. It is mainly used for liquid or solid disposable plastic packaging containers for beverages, food, pickles, honey, dried fruits, edible oil, agricultural and veterinary drugs, etc. Plastic bottles have the characteristics of unbreakable, low cost, high transparency, and food-grade raw materials. Plastic bottles are a labor-intensive industry, and the current labor costs continue to rise. For plastic bottle companies, labor costs have beco...

AI Technical Summary

Problems solved by technology

Plastic bottles are a labor-intensive industry, and the current labor costs continue to rise. For plastic bottle companies, labor costs have become a huge pressure

Secondly, the price of raw materials continues to rise. Affected by the rise of various costs in the market, raw materials have risen significantly, which has caused another layer of pressure on plastic bottle companies.

Now the factory mostly adopts the traditional two-step (injection stretch-blowing) production process for bottle injection molding, and the traditional two-step production process needs to go through the steps of raw material drying, injection molding preform, cooling, oven heating preform, blowing and other steps. It is more complicated, consumes more energy, and requires more manpower, which is not conducive to the development of the factory

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