B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/656
B29C 44/46 (2006.01)
Patent
CA 1160011
Abstract of the Disclosure This invention is directed to a method and an apparatus for the preparation of a flexible poly- urethane foam. For the method, a polyurethane foam forming mixture is provided, passing said mixture to a dispensing trough wherein partial foaming takes place, the dispensing trough discharging to a moving trough wherein the foam forming mixture expands and cures to form a flexible polyurethane foam. The inventive method is characterized by providing means for maintaining a generally uniform temperature across the mixture as the mixture passes from the dispensing trough to the moving trough by altering the internal configurations of the dispensing trough. The apparatus comprises in cooperative combination means to supply a foamable foam forming mixture of polyurethane components to a dispensing trough wherein the foam forming mixture partially foams and is discharged to an open topped moving trough wherein the foam forming mixture foams and cures to a flexible polyurethane foam. The inventive apparatus is characterized by comprising a means within the dispensing trough to provide a generally 28,539A-F uniform temperature along a cross sectional con- figuration of the foaming mixture as the mixture passes to the moving trough. The flexible polyure- thane foam produced by the method and from the apparatus of this invention is useful in cushioning applications such as, for example, mattresses and seat cushions. 28,539A-F
388833
Bradford Larry L.
Jordan David R.
Williams Kenneth W.
Smart & Biggar
The Dow Chemical Company
LandOfFree
Method and apparatus for the preparation of foamed structures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for the preparation of foamed structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the preparation of foamed structures will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-284275