How much is the price of purchasing food plastic packaging bottles?


Author: mgg-Plastic bottle manufacturer

How much is the price of purchasing food plastic packaging? MGG specializes in producing quality of food plastic bottles, transparent food plastic bottles, liquid food plastic bottles, PET food plastic bottles, food plastic packaging bottles, and manufacturers provide new quotations, please call Consultation, + 86-15916785363. Currently, the molding method mainly producing plastic bottle equipment has the following: (1) Extrusion blow molding, (2) injection blow molding, (3) pulling blow molding, (4) injection blow Plastic; these four methods have different performance. Small pharmaceutical plastic bottles use injection molding equipment pharmaceutical factories, because in the process of injection molding bottle, pay attention to the injection molding equipment of the bottle mouth, thereby ensuring the accuracy bottle, then mechanical configuration by the mandrel The blow molding bottle ensures the accuracy of the shape size of the plastic bottle, and the drug can effectively prevent the bottle from volatilizing and external gas penetration. Since the injection molding machine requires a pair of semi-finished molds, blow molds, the cost of the device is a relatively high extrusion blow mold.

Blowing polyester (PET) is a linear thermoplastic saturated polyester, a feature viscosity (IV) 70 - 80 l / g for blowing grade, is used to make the plastic blow molded bottle size. (1) Cylinder temperature parameters: General cylinder before the Cylcurde temperature 265 ° C to 275 ° C, and the cylinder temperature is from 280 ° C to 290 ° C, and the cylinder temperature 260 ° C to 255 ° C. The hygroscopic polymer material must be wet and dried, drying temperature of 150 ° C to 163 ° C, time is 5 hours, the temperature should be reduced to about 120 ° C, about 0.05% water content, heat preservation.

The particle drying has a large effect on forming properties, and the air in contact with the outer surface should be avoided because the dry raw material rapidly absorbs moisture in the air. (2) Injection type blank temperature: In order to ensure the transparency of the semi-finished product, when the melt filling type blank is cold? 45 ° C, more high glass transition temperature (82 ° C), closer to the raw material, glass transition temperature Transparency of the blow molding bottle. (3) Core temperature: In order to ensure uniform temperature distribution of the mandrel, the temperature of the mandrel section is: core bar head 45 ° C and 55 ° C, 40 ° C - 50 ° C, the tail is 25 ° C to 35 ° C.

In the billet injection station, due to the high melting temperature, the core temperature should be limited to the range, and when the mandrel is released, the lower limit of the cold internal core temperature range is defined. 5 Blow molding temperature, the cooling water temperature of the cooling bottle at 5 ° C - 10 ° C, and the temperature can be controlled at 10 ° C to 35 ° C. Blowing pressure 1 - 1.2 Penny, injection pressure is 60 - 100 mp.

About 80% injection pressure, pressure retention time should not be too long. Since PET crystallization speed is fast, high injection speed is required during production.

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