B - Operations – Transporting – 29 – F
Patent
B - Operations, Transporting
29
F
18/697
B29F 1/02 (1980.01)
Patent
CA 1147918
COMBINATION THERMOPLASTIC AND GLASS LOADED THERMOSETTING INJECTION MOLDING MACHINE AND METHOD FOR OPERATING SAME ABSTRACT OF THE DISCLOSURE: An injection molding machine which is capable of inject- ing both thermoplastic compounds and glass loaded thermosetting polyester compounds, wherein the machine is capable of rapid conversion from its thermoplastic configuration to its thermosetting configuration, and vice versa. The machine comprises an elongated charge forming barrel having a rearward thermoplastic feed opening, which is customarily supplied by pelletized thermoplastic material from a vertical feed hopper, and a thermosetting material feed opening extending into the barrel at a position forwardly of the thermoplas- tics feed opening. When processing thermoplastics materials, a conventional, fully flighted plasticizing screw is installed in the barrel so that the pelletized material is conveyed forwardly from the rear feed opening, and plasticized for subsequent injection. During thermo- plastics processing, the thermosetting feed opening is plugged. To convert the machine to process the aforementioned thermosetting materials, the second feed opening is unplugged, and the plasticizing screw is exchanged fox a deeper flighted conveying screw having flights extending from the forward end thereof to just behind the unplugged, second opening. A stuf- fer unit is then attached to the unplugged feed opening and dough-like glass loaded thermosetting material is forced through the second opening into the barrel by means of a reciprocating plunger, or the like. The thermosetting material is conveyed forwardly and mixed slightly as the screw rotates.
367824
Hpm Corporation
Macrae & Co.
LandOfFree
Combination thermoplastic and glass loaded thermosetting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combination thermoplastic and glass loaded thermosetting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combination thermoplastic and glass loaded thermosetting... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-268485