Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1989-04-03
1990-06-05
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
2643286, 425130, 425145, 425543, 222134, 222136, 222137, 222138, B29C 4120, B29C 4513, B67D 560
Patent
active
049312499
ABSTRACT:
An apparatus and process are provided for mixing and dispensing high viscosity, multiple component reactive liquids into a mold. The apparatus and process are particularly suitable for mixing and dispensing highly viscous intumescent fireproofing materials. Each reactive liquid component is stored in a separate pressure tank. The liquid components flow through separate conduits leading from each pressure tank, and are metered by a gear pump located in each component conduit. A gear linkage synchronously links the gear pumps together, and a self-locking motor is adapted to drive the linked gear pumps. When the motor is turned off, the gear pumps act as a valve to stop flow of the component liquids. The metered components flow into a common conduit, which has therein a static mixer for thoroughly mixing the components. The mixed components are then dispensed through an orifice. This orifice can be directed to the bottom of the mold so that the mold can be filled with the highly viscous material from the bottom to reduce the formation of air voids.
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Novo.RTM., "Metering and Mixing Systems", Brochure 100, Series Spiral Mixer Brochure.
Gearchem Pump Brochure.
Geariron Pump Brochure.
Dirkin, II Jeremiah F.
Thermal Designs, Inc.
Woo Jay H.
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