News
News

Types of Blow Molding Machines

Jul 29, 2026

Blow molding machines are widely used to manufacture hollow plastic products, including bottles, containers, drums, tanks, and industrial parts. Different blow molding technologies are designed for different materials, product shapes, and production requirements.

The main types of blow molding machines include Extrusion Blow Molding (EBM) Machines, Injection Blow Molding (IBM) Machines, Stretch Blow Molding (SBM) Machines, Reciprocating Blow Molding Machines, Co-Extrusion Blow Molding Machines, and Continuous Extrusion Blow Molding Machines.

1. Extrusion Blow Molding (EBM) Machines

Extrusion Blow Molding Machines are one of the most commonly used blow molding solutions. The machine extrudes molten plastic into a hollow tube (parison), which is then clamped into a mold and inflated with compressed air.

EBM machines are suitable for producing HDPE, PP, PVC, and other plastic containers, such as bottles, jerry cans, chemical containers, drums, and automotive parts.

For a detailed explanation of the working process, you can read: What Is an Extrusion Blow Molding Machine and How Does It Work?

As a manufacturer specializing in Extrusion Blow Molding Machines, Yi Sunda provides customized solutions for different production requirements, including container size, material selection, mold design, and output capacity.

2. Injection Blow Molding (IBM) Machines

Injection Blow Molding Machines combine injection molding and blow molding processes. A plastic preform is first injection molded, then transferred to a blow mold for final shaping.

IBM machines offer high precision and excellent surface quality, making them suitable for small bottles used in pharmaceutical, cosmetic, and medical industries.

3. Stretch Blow Molding (SBM) Machines

Stretch Blow Molding Machines are mainly used for PET bottle production. During the process, a preform is heated, stretched vertically, and inflated inside a mold.

SBM technology improves bottle strength, transparency, and material distribution, making it ideal for beverage bottles, water bottles, and carbonated drink containers.

4. Reciprocating Blow Molding Machines

Reciprocating Blow Molding Machines use a moving extrusion system that produces multiple parisons and improves production efficiency.

They are commonly used for high-speed production of medium and large plastic containers where stable output and flexibility are required.

5. Co-Extrusion Blow Molding Machines

Co-Extrusion Blow Molding Machines use multiple extruders to combine different plastic materials into a multi-layer structure.

This technology allows manufacturers to produce containers with better barrier properties, chemical resistance, and improved performance. It is commonly used for fuel tanks, food packaging, and chemical containers.

6. Continuous Extrusion Blow Molding Machines

Continuous Extrusion Blow Molding Machines continuously produce parisons during operation, improving production efficiency and reducing downtime.

They are suitable for large-scale production of plastic bottles, containers, and industrial packaging products that require high productivity.

Blow Molding Machine Types Comparison

Machine Type Main Process Common Materials Typical Applications
Extrusion Blow Molding (EBM) Extruded parison + air blowing HDPE, PP, PVC Bottles, drums, jerry cans, industrial containers
Injection Blow Molding (IBM) Injection preform + blow molding PE, PP, PET Medical bottles, cosmetic bottles
Stretch Blow Molding (SBM) Preform stretching + blowing PET Beverage bottles, water bottles
Reciprocating Blow Molding Moving extrusion system HDPE, PP Medium and large containers
Co-Extrusion Blow Molding Multi-layer extrusion HDPE, PP, EVOH Barrier containers, fuel tanks
Continuous Extrusion Blow Molding Continuous parison production HDPE, PP High-volume container production

Choosing the Right Blow Molding Machine

Selecting the right blow molding machine depends on several factors:

  • Product type and size: Small bottles, large containers, drums, or industrial parts require different machine configurations.

  • Plastic material: Different materials such as HDPE, PP, PET, and PVC require suitable molding technology.

  • Production capacity: High-volume production may require continuous extrusion or multi-station machines.

  • Product requirements: Consider wall thickness, strength, appearance, and barrier performance.

For manufacturers looking for reliable and flexible production solutions, Extrusion Blow Molding Machines are an ideal choice for a wide range of hollow plastic products. Yi Sunda offers professional Plastic Extrusion Blow Molding Machines with customized options to meet different industry requirements.