Efficient continuous dryer for flexible polyurethane foam and cleaning apparatus

Patent · 31 December 1998

OSTI ID:872188

Jody, Bassam ^[1]; Daniels, Edward ^[2]; Libera, Joseph A ^[3]

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1. Chicago, IL
2. Oak Lawn, IL
3. Clarendon Hills, IL

A method of cleaning polyurethane foams where the material is transported through a wash station while alternately soaking the polyurethane foam in an organic solvent and squeezing solvent from the polyurethane foam a number of times. Then the polyurethane foam is sent through a rinse or solvent transfer station for reducing the concentration of solvent in the foam. The rinsed polyurethane foam is sent to a drying station wherein the foam is repeatedly squeezed while being exposed to hot air to remove wet air from the foam.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: University of Chicago (Chicago, IL)
• Patent Number(s): US 5882432
• OSTI ID: 872188
• Country of Publication: United States
• Language: English

Related Subjects

/134/
air
alternately
apparatus
cleaning
cleaning apparatus
concentration
continuous
dryer
drying
efficient
exposed
flexible
foam
foams
hot
hot air
material
method
organic
organic solvent
polyurethane
polyurethane foam
polyurethane foams
reducing
remove
repeatedly
rinse
rinsed
soaking
solvent
squeezed
squeezing
station
times
transfer
transported
wash
wet
wet air