Cell structure of a flexible polyurethane foam.
October 28, 2014 12:40
Title: PUR FOAM WITH ENLARGED CELL STRUCTURE
Number/Link: WO2014/170198 (German)
Applicant/Assignee: Evonik
Publication date: 23-10-2014
“Gist”: The cell size of PU flexible foam is enlarged by using microcrystalline wax.
Why it is interesting: Enlarging the cell size of flexible foams can improve comfort properties by enhancing ‘breathabibility’, that is by enhancing airflow and moisture- and heat transport. According to this invention the cell size of flex foams can be increased without affecting foam density or hardness by using a specific type of wax. The wax (preferably) is a microcrystalline wax (as opposed to a paraffinic wax) with a congealing temperature of between 60 and 75°C. The wax is used as a dispersion in a solvent (e.g. a sorbitan ester) in an amount of about 0.05 to 2.0 php.
Cell structure of a flexible polyurethane foam.
Posted by Gerhard Bleys
Categories: dispersions, Flexible Foams
Tags: acoustics, automotive, cell opening, cell structure, comfort, cushioning, dispersions, mattress, seating
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