B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
50/2, 222/69.1,
B08B 7/00 (2006.01) B01F 3/08 (2006.01) B01F 13/10 (2006.01) B01F 15/02 (2006.01) B01F 15/04 (2006.01) B29B 7/72 (2006.01) B29B 7/74 (2006.01)
Patent
CA 1165123
21343 TITLE OF THE INVENTION SYSTEM FOR DISPENSING CURABLE COMPOSITIONS ABSTRACT OF THE DISCLOSURE A system is provided for dispensing curable compositions formed by a mixture of first and second materials which, when mixed in prescribed ratio, interact with each other to provide a relatively rapidly curable composition, such as a polymerizable epoxy resin or the like. The materials are individually pumped and metered through a first mixer and a dispensing valve to a dispensing nozzle. During start-up, the dispensing nozzle is closed, and the initial mixed composition is diverted through a bypass valve for dilution and mixture with a diluent stream of the first material in a second mixer and for return of the diluted mixture to the supply reservoir of the first material. When a homogeneous mixture of prescribed ratio is achieved at the outlet of the first mixer, the bypass valve is closed and the dispensing valve can be opened to allow dispensing of the composition. Upon shut-down, supply of the second material to the first mixer is ceased, and the dispensing valve and bypass valve are closed and opened, respectively, the first material is supplied to the first mixer and through the bypass valve to flush the composition therefrom and for dilution of the composition with the diluent stream in the second mixer.
396810
Gowling Lafleur Henderson Llp
Hutter Charles G.
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