Injection Molding, Methods & Apparatus Patents

4850851	Anti-backflow valve for injection molding machines
4643665	Check valve assembly for injection molding machine
5318357	Extruder injection apparatus
4752136	Extruder injection apparatus and method
6059556	Injection apparatus for injection molding machine
5540495	Injection assembly for an injection molding machine
4744746	Injection molding apparatus
3930600	Injection molding device with back pressure control of screw movement
6062294	Injection molding machine and injection molding method
3985349	Injection molding machine and method of operation thereof
5470514	Injection molding method for a shot of determined mass
4395376	Injection moulding machines
4289408	Marbleization of plastic materials
4247501	Marbleization of plastic materials
4832883	Method and apparatus for controlling screw positions in injection molding
4363768	Method of injection molding employing multichannel wave screw
4563324	Method of injection moulding
6149846	Method of mixing components in a non-intermeshing twin screw compounder for injection molding
6152592	Mixing devices having an array of spaced apart mixing elements for intercepting a flowing stream of material and contoured to mix constituents in the stream
5340304	Mold for injection molding perform with undercut lip
5028226	Multi-cavity, co-injection molding apparatus
4349044	Non-return device at the screwhead of screw injection molding machines
4062479	Non-return valve assemblies in injection molding machines
4377180	Non-return valve for plastic injection molding
5035605	Nozzle shut-off valve for an injection molding machine
4099904	Nozzle shut-off valve for injection molding machine
5304051	Plasticising unit for a screw injection moulding machine having improved volume adjustment means
4112516	Plasticizing device of an injection molding machine for plastics
4592712	Plastification and injection device for an injection molding machine
5258158	Positive-type non-return valve and method of using valve
5246660	Process and apparatus for injection molding with melt filtration and mixing
5932154	Process of making a plastic part with a retrofitted screw machine
4074362	Vented injection molding machine
4112519	Vented injection molding machine and method