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blowing

You wish to have large hollow plastic parts made in small series or prototypes ?

The extrusion blow molding process is probably the most suitable. Widely used for bottling, this process is three times faster than rotational molding and allows to obtain hollow parts in PP or PE whose shape corresponds to the impression of a mold.

Blow molding is commonly used to make many everyday objects: packaging bottles, watering cans, tanks, etc.

Moderate tooling investment

medium-sized series
of production

Moderate unit price

moderate dimensions of parts

Before starting your production, ask our R&D team for advice

schedule an appointment to study your project

Our blowing site in figures

7,000 m² located in the Ain, in the Auvergne-Rhône-Alpes region
A machine park of 8 blow molding machines
1 5-head blow-moulding machine with a fast production rate
Parts from 0.25 to 300 liters
Light enough parts (10g to 16kg)
Production in 3x8
ISO 9001 certification

Blowing in Auvergne-Rhône-Alpes

A wide range of finishes

In blow molding, the external appearance of the parts depends on the surface of the mold. On the other hand, the inside of the parts is always smooth, due to the plating of the material under the effect of the pressure.

Smooth

Industrial polishing
Visible but reduced machining or sanding marks
Very economical
For non visible surfaces

transparence

Use of transparent plastic materials

Microbilling

Industrial post-polishing
Removes machining marks
Matte or satin appearance

Roughening

Surface with previously developed 3D patterns
Very high freedom in appearance for a specific look or touch

A few examples of plastic pieces

A choice of materials available according to your needs

Our R&D team will advise you on the choice of materials available for extrusion blow moulding:

HDPE: the most common, for all applications
LDPE and EVA : for flexible parts
PP : for appearance parts
PETG : for transparency
etc

Discover our r&d team

Download our guide to blow molding

Our expertise in blow molding

How does it work ?

The extrusion blow molding process consists of 5 steps:

Introduction of plastic granules and extrusion of a tube called "parison"
Closing of the mold around the parison which becomes a hermetic hollow body
Blowing of the parison: the material sticks to the walls of the mold to take its shape
Deflating and opening the mold
Finishing operations (Cutting, deburring, flaming, drilling, assembling)

Reserved for hollow rooms

Freedom of shape
Extremely large size range
Small to medium series

Control of thicknesses and dimensional tolerances

More delicate than injection molding, the control of thicknesses is very satisfactory, thanks to simulation tools
Thickness and tolerances are much better controlled than in rotomolding

Attractive production times

Make your parts faster and with higher quantities than in rotational molding because the production rates are 10 times higher in blowing than in rotational molding.