Supavent

Soft technology that hits scrap hard!

Supavent is a one-way vent that fits into venting holes in moulds. It replaces the need for other materials usually inserted in these holes and gives better, more consistent results.

The vent is made of a heat-resistant flexible polymer with a blind ended “dome”™ at one end, and an open-ended “mushroom”™ at the other. A carefully-designed slit down one side turns it into a one-way valve, enabling air to enter the mould but preventing it from leaving.

Supavent is currently available to fit into 13mm (1/2”), 19mm (3/4”) and 25mm (1”) vent holes. Some of the super features of our Supavents are described in US Patent 11/033969.

 

Why Supavent?

  • Makes production of rotational mouldings easier

  • Reduces scrap rate, cycle time and cost per production cycle

  • Improves surface quality and finish

  • Makes part-line blowholes a thing of the past

  • Simple to use and install

  • Gives repeatable results: because Supavent is a manufactured product designed specifically to fit into venting holes in moulds, its performance is consistent

  • Does not restrict part shrinkage

  • Easily incorporated into current pressurisation systems

For further information contact La Plastecnica here or at info@laplastecnica.com.

 

FAQ

Supavent has been designed to fit into an open hole that measures 13mm, 19mm or 25mm in diameter and 4mm to 8mm in depth. In a cast aluminium mould, this simply requires a hole to be drilled through the mould in the appropriate location. In a sheet metal mould, the placement hole may require a collar to provide sufficient depth.

The location of the vent placement hole will be governed by standard vent hole considerations. Supavent requires a minimum space clearance of 33, 40 or 45mm in diameter around the vent and 10mm of space beyond the vent dome in order to function at its best. The vent will perform better if it is located near a wall or some other feature that will provide some protection from the powder movement.

Fit Supavent by inserting the closed end of the tube through the placement hole from the outside of the mould until the collar butts up against the outer wall of the mould.

The life expectancy of Supavent may be increased significantly by mounting it in a PTFE (Teflon ®) collar. Please contact us for further details.

If you want to use Supavent in an existing vent tube with an appropriately sized internal diameter please cut the mushroom off the Supavent. This can then be fitted into the end of the existing vent tube so that the dome extends into the mould.

For further information contact La Plastecnica here or at info@laplastecnica.com.