Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Measuring a weight or volume
Patent
1997-09-23
1998-11-10
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Measuring a weight or volume
2642972, 2643288, 26432819, 264245, 425130, 425558, 425561, 425572, B29C 4516, B29C 4522
Patent
active
058338993
ABSTRACT:
One or several molten materials are extruded at low pressure from one or several continuous plasticizers through central stationary nozzles via individually circumferential flow passages of common distribution spools directly into individual extendable transfer reservoirs. From there, the molten materials are transferred in a continuous cascading manner into secondary transfer reservoirs to be subsequently transferred and condensed within mold cavities into finished molded articles. The central stationary nozzles and stationary primary displacement plugs are grooved with lateral longitudinal melt-flow channels to allow the conveyance of molten materials across intersecting molten material passage ways during the extending movement of the manifold assembly. The molten materials are conveyed through secondary displacement plugs into secondary transfer reservoirs by external cylinders, retracting the manifold assembly on adjustable-length spacer rods in unison against the stationary primary displacement plugs. Compensation rods, built into the stationary distribution plugs regulate the volume relative to each transfer reservoir and can monitor the sequence of different molten material transfers. The cylinder strokes are variable to create finished articles at different weights. Multiple molten materials are united during the tertiary transfer phase by passing across multilayer die crowns and die cones, embedded in tertiary distribution spools of a tertiary manifold assembly.
REFERENCES:
patent: 3020591 (1962-02-01), Breher et al.
patent: 3241192 (1966-03-01), Nouel
patent: 3245115 (1966-04-01), Ecklund
patent: 4080147 (1978-03-01), Dumortier
patent: 4256689 (1981-03-01), Gardner
patent: 4808101 (1989-02-01), Schad et al.
patent: 5221507 (1993-06-01), Beck et al.
patent: 5227181 (1993-07-01), Knudsen
patent: 5229144 (1993-07-01), Kuntz
patent: 5403178 (1995-04-01), Steger
patent: 5662856 (1997-09-01), Wunderlich
Fink Edward M.
Heitbrink Jill L.
LandOfFree
Method for the preparation of method articles by single and mult does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the preparation of method articles by single and mult, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the preparation of method articles by single and mult will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1513477