摘要:
A method of controlling a molding system for fabricating a molded article from a settable mixture includes the steps of priming several discharge containers with different components of the settable mixture and evacuating the discharge containers through a conduit into a mixing head. The mixing head combines the components to form the settable mixture that is then injected into the mold. During the priming step, pressure within each of the discharge containers is monitored to detect air being drawn into the system. Pressure of the settable mixture is monitored at the mixing head and at the mold tool to detect any blockages that can cause damaging pressure fluctuations. To prevent built up of residual settable mixture within the settable mixture, all parts of the system that contact the settable mixture are flushed with a solvent and then air-dried to rid the system of the solvent.
摘要:
A process is described for the production of a curable multi-component reaction mixture (and, in particular, a polyurethane), containing filler in which the reaction components are premixed and then mixed with the dry filler in a friction mixer having a conically shaped screw rotatable in a conical mixing chamber. The friction mixer is preferably operated under a fractional load at a low rotational speed.
摘要:
This invention relates to a device and a method for introducing and mixing a relatively small flow of a liquid possessing a low viscosity into a quantity of a liquid having a high viscosity, the action being turbulent with the introduction of a current of pressurized gas into said high viscosity liquid.