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
Moderate unit price
moderate dimensions of parts
Before starting your production, ask our R&D team for advice
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.
Visible but reduced machining or sanding marks
For non visible surfaces
Use of transparent plastic materials
Removes machining marks
Matte or satin appearance
Surface with previously developed 3D patterns
Very high freedom in appearance for a specific look or touch
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
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.
Our references in plastics processing
Interested in our expertise in plastic materials ?
SITE INJECTION & DÉVELOPPEMENT
38, route de Louhans
71 370 St Germain du Plain
+33 (0)3 85 42 12 00
20 Route de Bourg
+33 (0)4 74 30 62 66