Blow Molding Machine Basic Concept

April 26, 2022

Blow molding machines are divided into automatic and semi-automatic according to performance, and industrial and food and beverage use according to application. The raw materials for industrial use are generally PE, PC, etc., which generally produce oil pots, shampoo bottles, etc.; PET is generally used as the raw material for the Blow molding machine for food and beverages, which mainly produces mineral water bottles, beverage bottles, etc.

Bottle Blowing Machine, the most simple explanation is a machine that can blow the finished preforms into bottles through certain technological means.

At present, most of the blow molding machines are still two-step blow molding machines, that is, the plastic raw materials must be made into preforms and then blown. Nowadays, environmentally friendly plastics made of PET are generally used.

The bottle blowing process is divided into two parts:

1. Preheating, irradiating the preform through a high-temperature lamp to heat and soften the body of the preform. In order to maintain the shape of the bottle mouth, the preform mouth does not need to be heated, so a certain cooling device is required to cool it.

2. Blow molding, this stage is to place the preheated preform into the prepared mold, inflate it with high pressure, and blow the preform into the desired bottle.

The Automatic Bottle Blowing Machine completes the two blowing operations together through the operation of the manipulator, eliminating the process of manually placing the preheated preform into the mold in the middle. It greatly speeds up the production rate, and of course the price is higher than the semi-automatic one.

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