Working Principle of Plastic Blow Moulding Machine

2024-11-11

The working principle of the plastic blow moulding machine involves forming a tubular parison through the extrusion process of thermoplastic plastics, and then injecting compressed air into the parison to expand and fit to the inner wall of the mold, and then cooling to obtain the desired hollow plastic product.

Working Principle of Plastic Blow Moulding Machine-Kingplas Machinery Co., Ltd

First, the plastic particles are melted under the heating of the extruder and the push of the screw, and are extruded through the die head to form a tubular parison.

At this time, the parison is in a thermoplastic state and can be formed by blowing compressed air into it through the blowing system. The injection of compressed air causes the parison to expand and fit closely to the inner wall of the mold to form a hollow product of the desired shape.

Subsequently, the temperature of the parison is reduced by the cooling system, so that the plastic solidifies and maintains its shape.

Finally, the mold is opened to take out the molded plastic product, completing the entire blow molding process.

Advantages of Blow Moulding Machine

The advantage of blow moulding machine is that they can be produced continuously, suitable for large-scale production, and can produce hollow plastic products of various shapes and sizes. In addition, since the parison is formed in a thermoplastic state during its production process, many different types of thermoplastics can be used, such as polyethylene (PE), polypropylene (PP) and polyethylene terephthalate (PET). These materials have good chemical stability and low temperature resistance, so that the final product can be used in a variety of environments.

Working Principle of Plastic Blow Moulding Machine-Kingplas Machinery Co., Ltd

Blow Moulding Machine Application

Plastic blow moulding machines are widely used, from small medical containers to large storage tanks, which can be manufactured by this technology.

Working Principle of Plastic Blow Moulding Machine-Kingplas Machinery Co., Ltd

Why Choose Kingplas Machinery?

Has 30 years blow molding experience. Our blow molding machine portfolio is designed to handle a wide range of thermoplastic materials, including HDPE, PP, PE, PVC, PC, and PETG, for containers ranging from 10ml to 1250L.

Automatic Extrusion Blow Molding Machines: High-speed continuous extrusion systems (Single/Double Station) for cosmetics, lubricants, and household chemicals.
Accumulator Head Blow Molding Machine: Robust solutions for large-scale industrial parts, such as 200L drums, IBC tanks, and automotive components.
Multi-Layer Co-Extrusion Technology: Advanced 2-to-6 layer systems that provide superior barrier properties for agrochemical and fuel tank applications.
Turnkey Solutions: Integrated production lines including precision mold design and auxiliary equipment.