Working principle and application of bottle blowing machine

Blowing machine is a kind of equipment used to produce plastic bottles, which is widely used in beverage, food, cosmetics and medicine industries. This article will introduce the working principle, process flow and application of bottle blowing machine in detail.

1. Introduction
Blowing machine makes plastic raw materials into bottle embryos through blow molding process, and then heats and blows them into the final bottle. This equipment can efficiently produce plastic bottles of various specifications and shapes to meet the needs of different industries.

2. Working principle
The working principle of bottle blowing machine mainly includes the following steps:

2.1 Preheating
First, the bottle embryo (embryo) is irradiated by infrared high-temperature lamp tube to heat and soften the body of the bottle embryo (embryo). In order to maintain the shape of the bottle mouth, the bottle embryo (embryo) mouth does not need to be heated, so a certain cooling device is required to cool it down1.

2.2 Bottle blowing molding
Then, the preheated bottle embryo (embryo) is placed in the prepared blow mold and inflated with high pressure. The bottle embryo (embryo) is blown and stretched into the required bottle. The fully automatic bottle blowing machine combines the two operations of bottle blowing through the operation of the manipulator, eliminating the process of manually placing the preheated preform into the blow mold. It greatly speeds up the production rate1.

2.3 Cooling and shaping
Finally, the blown bottle is cooled and shaped to keep it in a stable shape and size. This process is usually completed in the blow mold, and is achieved by cooling water or other cooling media.

3. Process flow
The process flow of the bottle blowing machine mainly includes the following links:

Preheating: Heat the bottle preform to an appropriate temperature to give it good ductility and plasticity.
Blowing: The bottle preform is blown and shaped by high-pressure gas to make it close to the inner wall of the mold.
Cooling and shaping: The blown bottle is cooled and shaped to keep it in a stable shape and size.
Demolding: The cooled and shaped bottle is removed from the mold to complete the entire bottle blowing process.
4. Application areas
Blowing machines are widely used in the following areas:

Beverage industry: used to produce various beverage bottles, such as mineral water bottles, carbonated beverage bottles, etc.
Food industry: used to produce various food packaging bottles, such as juice bottles, cooking oil bottles, etc.
Cosmetics industry: used to produce various cosmetic packaging bottles, such as shampoo bottles, skin care bottles, etc.
Pharmaceutical industry: used to produce various pharmaceutical packaging bottles, such as medicine bottles, disinfectant bottles, etc.
5. Technological development
With the advancement of science and technology, the technology of bottle blowing machines is also developing continuously. Modern bottle blowing machines adopt intelligent control systems, which can realize automatic production and precise control. In addition, multi-layer blow molding technology and stretch blow molding technology have been developed to further improve the performance and quality of bottles2.

6. Conclusion
As an efficient plastic bottle production equipment, bottle blowing machines are widely used in various industries. By understanding its working principle and process flow, we can better master the use and maintenance skills of bottle blowing machines and improve production efficiency and product quality.