Apparatus for producing a curable polyurethane froth

An apparatus for the continuous production of a curable polyurethane froth which apparatus comprises separate sources of a polyol, an isocyanate, a catalyst and an inert gas, means including separate conduits for feeding said polyol, isocyanate and inert gas separately and under pressure at controll...

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Bibliographische Detailangaben
Hauptverfasser:	MAYER, WALTER P, PINKSTON, BRUCE H. W, BARTH, BRUCE P, JOHNSON, ROBERT N
Format:	Patent
Sprache:	eng
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An apparatus for the continuous production of a curable polyurethane froth which apparatus comprises separate sources of a polyol, an isocyanate, a catalyst and an inert gas, means including separate conduits for feeding said polyol, isocyanate and inert gas separately and under pressure at controlled flow rates from said sources to a mixing device containing inlet openings to receive said polyol, isocyanate and inert gas, means for mixing said polyol, isocyanate and inert gas to produce a froth, and an outlet opening for the resulting froth, means for delivering the froth from said mixing device to a second mixing device, a conduit for feeding the catalyst under pressure at a controlled flow rate to the second mixing device, and means for mixing the froth and catalyst, said mixing device containing inlet openings to receive the froth and catalyst and an outlet opening for the resulting catalyzed froth and means for delivering the catalyzed froth from the mixing device onto a substrate.