Basf Corporation

Foamseal, Inc.

Mark A Easterle

Richard C Rossio

Michael L Jackson

Norman K Merser

Jackson

The invention relates to energy absorbing, water blown, rigid polyurethane foams. The foams of the present invention are low density, predominantly open-celled foams which exhibit a relatively constant consistency of compressive strength over deflection. Such foams are suitable as light weight alternatives in traditional energy absorbing applications.

Energy absorbing, water blown, rigid polyurethane foam

The invention relates to water blown, low density, energy absorbing rigid polyurethane foam articles which exhibit minimal springback or hysteresis characteristics. The articles produced from the foams of the present invention maintain a constant crush strength of material up to about 70% deflection and are useful in appropriate automotive applications such as side impact bolsters.

Energy absorbing, water blown, rigid polyurethane foam articles

The invention relates to energy absorbing, water blown, rigid polyurethane foams. The foams of the present invention are low density, predominantly open celled foams which exhibit a relatively constant consistency of compressive strength over deflection. Such foams are suitable as light weight alternatives in traditional energy absorbing applications.

A method of substantially completely filling elongated channels with foam, such as the channels in an extruded lineal used by the window industry. The method includes first orienting the channel in an upwardly angled orientation preferably greater than 30 degrees and less than 90 degrees, with a preferred angle of about 60 degrees. Where the channel has open ends, the lower end may be temporarily sealed. A thin, relatively high-pressure high-velocity stream of liquid foamable resin is then directed into the elongated channel open end generally parallel to the inside walls, such that the high-pressure liquid stream is carried at least partially down the length of the elongated channel, prior to contacting the channel inside walls and creaming. The liquid foamable resin then rises upwardly through the elongated channel, substantially completely filling the channel with resin foam.

Growing community of inventors

Rochester, MI, United States of America

Mark A Easterle