Angel Rodríguez Guitart, Joaquim Serra Pica, Productos Concentrol
Mould release agents play a vital role in the moulded polyurethane foam sector, but their choice involves balancing a number of factors including environmental impact, cost and efficiency in use.
There are many factors to consider when deciding on the right release system for a moulded polyurethane part. The mould-release agent industry has been working hard to reduce the environmental impact, improve in-use economics and maintain the efficiency of mould release agents for the sector.
One of the most difficult and challenges of recent years has been to reduce the greasy finish which water-based release agents can give to parts.
The pressure to move away from solvent to water-based release agents has been strong: OEMs have put pressure on the industry to eliminate VOCs.
Additionally, worker exposure to solvents, measured through TLV/DNEL values related to solvents used in mould release, together with an improvement in the working area environment have helped drive the change from solvent-based to water-based release agents.
The mould-release industry has developed systems which offer improved finish of parts produced with water-based and co-solvent release agents. The finish of parts has become drier making it possible to glue on surface pieces, heating-pads and textiles auxiliaries without sacrificing release capacity.
It is not an either/or situation, between…