A nozzle and a method for feeding thermosetting plastic

B - Operations – Transporting – 05 – B

Patent

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B05B 7/08 (2006.01)

Patent

CA 2232619

A nozzle for feeding a mixture of thermosetting plastic and hardener from a mixing chamber, to which feed lines for supply of thermosettable plastic as well as the hardener are connected. The mixing chamber communicates with at least two beam channels (14) having a diameter (b) of 0.5-1.5 mm, which converge in an angle (a) of 70-140° towards a point outside the nozzle. By feeding a mixture of thermosetting plastic and hardener via the nozzle, the mixture has a viscosity of between 150 and 75.000 cpois, and that the mixture is extruded from the nozzle with a pressure of 75 to 100 bar.

L'invention concerne une buse d'alimentation pour un mélange de plastique thermodurcissable et de durcisseur contenu dans une chambre de mélange à laquelle sont connectées des conduits d'alimentation du plastique thermodurcissable et du durcisseur. La chambre de mélange communique avec au moins deux canaux à jet (14) d'un diamètre (b) compris entre 0,5 et 1,5 mm, qui convergent vers un point extérieur à la buse en formant un angle ( alpha ) compris entre 70 et 140 DEG . L'alimentation du mélange de plastique thermodurcissable et de durcisseur par la buse, est caractérisée en ce que le mélange présente une viscosité comprise entre 150 et 75,000 cpois et est extrudé par la buse avec une pression de 75 à 100 bar.

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