Blow Molding

Blow moulding is the most cost-effective process for producing hollow plastic parts at volume. Parison or preform is inflated inside a closed mould to produce seamless hollow parts. Our tooling team designs aluminium moulds optimised for wall thickness control, material selection, and volume flexibility.

NICE Rapid operates extrusion and injection blow moulding equipment for hollow plastic parts. The right process and wall thickness are matched to your container geometry, material performance needs, and production volume.

What Sets Us Apart

Hollow Plastic Parts at Volume

Extrusion & injection blow

EBM for larger containers; IBM for precision neck finishes and tight dimensional control.

Multi-layer options

Co-extrusion with EVOH barrier layers for food, pharmaceutical, and chemical packaging.

Rapid aluminium tooling

Blow moulds produced in 2–4 weeks for fast time-to-first-article and low tooling investment.

FDA-compliant materials

Food-contact and pharmaceutical-grade materials available across all blow moulding processes.

Our Blow Moulding Capabilities

Extrusion Blow Moulding (EBM)

Molten parison extruded into open mould, mould closes and compressed air inflates part to mould shape. For bottles, containers, ducting, and non-round cross-sections.

Injection Blow Moulding (IBM)

Preform injection moulded then blow-moulded for accurate neck finishes and tight dimensional control — ideal for pharmaceutical and precision packaging.

Multi-Layer Co-Extrusion

EVOH barrier layers co-extruded for food, pharmaceutical, and chemical packaging requiring extended shelf life and chemical resistance.

Our Process

STEP 1

Part & Tool Design

Wall thickness, neck finish, and parting line designed. Aluminium blow mould CNC machined with cooling channels and pinch-off geometry.

STEP 2

Parison or Preform Production

EBM: molten parison extruded from die head. IBM: preform injection-moulded to precise weight and neck geometry.

STEP 3

Mould Close & Inflation

Mould halves close around parison. Compressed air (6–10 bar) inflated to expand plastic against mould wall.

STEP 4

Cooling

Mould cooling channels remove heat. Part solidifies in 10–60 seconds depending on wall thickness and material.

STEP 5

Demould & Flash Trim

Mould opens; part removed. Pinch-off flash at top and base removed by knife or automated trimming station.

STEP 6

Inspection & Labelling

Wall thickness gauge, drop test, and leak testing as required. Label application, cap assembly, and packing for dispatch.

Materials

Polyolefins

Material	Key Properties	Suitable Applications
HDPE	Chemical resistant, tough, recyclable	Bottles, drums, tanks, piping
LDPE	Flexible, soft, good clarity	Squeeze bottles, film liners
PP	Higher temp resistance, living hinges	Automotive reservoirs, food containers

Transparent & Specialty

Material	Key Properties	Suitable Applications
PET	Crystal clear, excellent barrier properties	Carbonated beverage bottles, food packaging
PETG	High clarity, easy to process	Cosmetic bottles, medical packaging
PC	Optical clarity, high impact	Headlamp lenses, protective containers
PVC	Flexible, chemical resistant	Medical tubing, industrial ducting
EVOH (co-extrusion)	Excellent barrier layer	Long shelf-life food and pharmaceutical packaging