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Used Injection Blow Molding in China

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Overview

Injection blow molding combines injection molding and blow molding to produce hollow plastic parts such as bottles, containers, and medical components. The process injects a thermoplastic preform, then transfers and inflates it in a blow mold to form precise, thin-walled shapes. Machines range from lab-scale units to high-speed multi-station lines with automated handling, trimming, and quality controls for consistent wall thickness and repeatable high-volume production.

FAQ

What should I inspect when buying a used injection blow molder?

Check machine hours, electrical and hydraulic systems, screw and barrel wear, mold condition, preform handling and transfer mechanisms, control panels, and maintenance records. Ask for recent test runs and spare parts inventory.

How do I verify the machine meets my production needs?

Confirm cycle time, cavities per cycle, compatible preform sizes, target output, part tolerances, and whether existing tooling fits. Request sample parts or a production trial on your preforms.

What are key shipping and installation considerations?

Plan for crating, skidding, weight and height constraints, rigging and crane access, customs paperwork, and local electrical, air and chiller hookups. Consider supplier-led installation and commissioning to reduce risk.

What routine maintenance is required?

Regularly inspect and clean molds, check and change hydraulic oil and filters, monitor heater bands and thermocouples, lubricate moving parts, and keep common spares like seals, valves and sensors on hand.