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Foaming for thin-wall parts

Three new chemical foaming agents from Clariant Masterbatches are formulated to reduce or eliminate sink marks and warpage in thin-walled injection molded parts such as automotive, electronic and appl...


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August 1, 2002 by Canadian Plastics

Three new chemical foaming agents from Clariant Masterbatches are formulated to reduce or eliminate sink marks and warpage in thin-walled injection molded parts such as automotive, electronic and appliance housings. The new ITP Series of Hydrocerol foaming agents produce a micro-cellular foam that can reduce density by 5 to 10% with no adverse affect on surface appearance, Clariant reports.

“Allowing for flexible dosing, the ITP Series can be an alternative to the super critical gas processes that require expensive specialized equipment,” says Dennis Haff, product manager, Clariant Masterbatches.

In field tests with polypropylene, styrenics and nylon 6 resin, Haff reports that processing without any holding pressure (cushion) resulted in up to 30% shorter cycle times. Densities were reduced, which could result in lower resin consumption.

Clariant Masterbatches 800-265-3773