Sponge Rubber Extrusion Process
Rubber profiles are extruded from the die and cured in a series of microwave units to hold their finished form. The Ballotini curing process is a very different one. On a Ballotini line the natural rubber is fed from the extruder through the die plate and then passed through a Ballotini bath. Ballotini are small pure soda lime glass balls that are heated up to approximately 220 degrees, the heat control and heat transfer makes it a perfect partnership for use with sponge compounds due to the chemical composition. This curing process results in a sponge profile that can then be packaged to the customer’s requirements.
Custom Sponge Rubber Extrusions
Material: EPDM – 0.8 Sponge
Capability: Co-Extrusion
Sector: Marine
Material: EPDM – 0.4 Sponge
Capability: Single Extrusion
Sector: Drainage
Material: EPDM – 0.3 Sponge
Capability: Single Extrusion
Sector: Automotive
Sponge Densities
The following are examples of the most common sponge densities that we extrude. If you have a specific density requirement we are able to source specific for your application.
- 0.30-g/cc
- 0.40-g/cc
- 0.55-g/cc
- 0.80-g/cc
Key Market Sectors
RIGID PLASTIC
Rigid profiles can be either single material types or co-extruded using a combination of rigid and flexible material types. The rigid profiles we extrude are commonly used in automotive, partitioning, glazing, display and roofing market sectors.
FLEXIBLE PLASTIC
We provide co-extrusion and triplex extrusion providing combinations of material types and colours. The Flexible plastic profiles that we extrude are commonly used for sealing systems or connecting sections between two components.
SOLID RUBBER
We can extrude single or co-extruded rubber profiles combining various material types and colours. We provide cording to reduce shrinkage and silicone application. The profiles we extrude in rubber are commonly used in glazing and curtain walling.
