SYSTEM AND METHOD FOR FORMING A POLYURETHANE FOAM INCLUDING ON DEMAND INTRODUCTION OF ADDITIVE TO RESIN COMPONENT

• Main Authors: HUNTER, MARCUS J, JEAN-REJOUIS, MARIO, CARTER, GREGORY BRYAN, LONGTIN, PETER NOEL, WISHNESKI, TODD WILLIAM
• Format: Patent
• Language: English; French
• Published: 25.09.2014
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; NOZZLES; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

A system (10) and method for forming a polyurethane foam includes supplying an isocyanate component from a source (12) of isocyanate to a proportioner (20). A resin component from a source (14) of resin is supplied to a metering unit (18) and an additive having an unstable state from a source (16) of additive is supplied to the metering unit (18). The resin component and the additive form a reactive mixture when combined. The system and method includes delivering the reactive mixture by the metering unit (18) to an accumulator (24) and storing the reactive mixture in the accumulator (24). The system and method further includes demanding a supply of the reactive mixture with the proportioner (20) and supplying the reactive mixture by the accumulator (24) to the proportioner (20) and mixing the reactive mixture with the isocyanate component by the proportioner (20) to form the polyurethane foam.