How Chemical Drums Are Manufactured: Blow Molding Process

2026-06-25

A 220-liter chemical drum is a large-capacity industrial container widely used for storing and transporting chemicals, lubricants, food ingredients, and hazardous liquids. These drums require high strength, chemical resistance, and durability to ensure safe handling in industrial environments.

220L chemical drums are mainly produced using extrusion blow molding technology, which allows efficient, consistent, and high-volume manufacturing.

Raw Materials Used in 220L Drum Production:

HDPE (High-Density Polyethylene)
Modified HDPE with UV stabilizers
Recycled HDPE blends (for cost-effective applications)

Manufacturing Process of 220L Chemical Drums:

Feeding and Melting Material

Workers feed HDPE pellets into the extruder. The machine heats and melts the pellets into a uniform molten plastic mass.

Forming the Parison

The extruder pushes the molten plastic through a die head. The system forms a tube-like structure called a parison.

Mold Clamping

The machine closes a two-part mold around the hot parison and positions it for shaping.

Inflating the Plastic

The system injects compressed air into the parison. The air expands the plastic until it matches the mold cavity and forms the drum shape.

Cooling and Solidification

Cooling channels inside the mold lower the temperature quickly. This step solidifies the structure and locks in the final shape.

Ejection and Trimming

The finished 220L drum is removed, and excess material (flash) is trimmed.

Quality Inspection

The machine releases the finished drum from the mold. Operators then remove excess material from the edges.

Chemical Drums Blow Molding Machine Features:

The production of 220L chemical drums relies on large-scale extrusion blow molding machines, which must provide:

How Chemical Drums Are Manufactured: Blow Molding Process-Kingplas Machinery Co., Ltd

Strong clamping force for large molds
Precise parison control for uniform walls
Efficient cooling systems for faster cycles
Stable extrusion output for consistent quality
Automation for reduced labor cost

Applications of 220L Chemical Drums:

Industries use 220L drums in many sectors:

How Chemical Drums Are Manufactured: Blow Molding Process-Kingplas Machinery Co., Ltd

Chemical Storage and Transport
Petrochemical Industry
Food and Beverage Bulk Packaging
Pharmaceutical Raw Material Handling
Agricultural Liquid Storage

Conclusion:

Manufacturers produce 220L chemical drums through advanced extrusion blow molding technology to ensure strength, safety, and efficiency. Each step of the process improves durability and consistency.

Kingplas Machinery provides reliable blow molding solutions that help manufacturers achieve stable production and high-quality industrial containers for global markets.

FAQ:

Q1: What material is used for 220L chemical drums?

A: Most drums are made from HDPE due to its chemical resistance and durability.

Q2: What process is used to manufacture chemical drums?

A: Extrusion blow molding is the most common production method.

Q3: Are 220L drums recyclable?

A: Yes, HDPE drums can be recycled and reused in industrial applications.

Q4: What industries use 220L drums?

A: They are used in chemical, petroleum, food, and agricultural industries.

Q5: What is the advantage of blow molding?

A: It creates seamless, strong, and lightweight containers suitable for industrial use.

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.