Blow Moulding
The Importance of Blow Moulding
Blow moulding is a widely used manufacturing process for producing hollow plastic parts such as bottles, containers, tanks, and ducts. It plays a vital role in packaging, automotive, consumer goods, and industrial applications.
The advantages of blow moulding include:
• High-volume production of lightweight, hollow parts
• Cost-efficient tooling for medium to large runs
• Design flexibility for complex shapes and integrated features
• Fast cycle times for packaging and structural components
Why Blow Moulding Tool Steel Selection Matters
Blow moulding tooling, such as moulds, neck inserts, and cutting components, must perform reliably in environments where abrasion, heat, and corrosive gases are common. The choice of tool steel directly impacts:
• Mould durability and longevity
• Surface finish and product consistency
• Resistance to wear and erosion
• Downtime and tool maintenance costs
What Makes an Excellent Blow Moulding Tool Steel?
Whether from Uddeholm or BÖHLER, blow moulding tool steels must balance mechanical performance with resistance to wear and corrosion. Ideal properties include:
• Abrasion resistance for filled or recycled plastics
• Corrosion resistance to handle aggressive polymers and gases (e.g., PVC, halogenated compounds)
• High toughness to withstand impact and pressure from the moulding process
• Thermal conductivity to support efficient cooling
• Good machinability for ease of mould fabrication and repair
• Surface finish quality suitable for consumer and industrial-grade products
Available in large block sizes and custom configurations for mould frames, inserts, and ancillary tooling: