Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1995-01-31
1996-06-18
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264 407, 26417312, 26417719, 4251311, 425145, 425197, 4253824, 425462, B29C 4792
Patent
active
055274994
ABSTRACT:
An extrusion apparatus and method for producing a composite profile strip characterized by an extrusion head having plural flow channels extending to an extrusion die and at least two extruders for feeding respective components at respective different pressures into the flow channels for passage to the extrusion die. The extrusion die has a common die outlet from which the components are discharged to form the composite profile strip, and respective flow restriction devices are disposed in the flow channels between the extruders and the extrusion die. The flow restriction devices are operative to decrease the difference in pressure between the components before being brought together at the extrusion the extrusion die and further to dampen the effect changes in extruder speed has on the profile of the composite profile strip.
REFERENCES:
patent: 2566854 (1951-09-01), Rhodes
patent: 3863001 (1975-01-01), Thumudo, Jr.
patent: 4075265 (1978-02-01), McClung et al.
patent: 4097566 (1978-06-01), Bertin et al.
patent: 4410477 (1983-10-01), Claude
patent: 4416605 (1983-11-01), Kondo et al.
patent: 4515738 (1985-05-01), Anders
patent: 4680152 (1987-07-01), Capelle
patent: 4693855 (1987-09-01), Herbert
patent: 4719071 (1988-01-01), Capelle
patent: 4728279 (1988-03-01), Bellmer
patent: 4754413 (1988-06-01), Koster et al.
patent: 4832882 (1989-05-01), Moylan
patent: 4892473 (1990-01-01), Elia et al.
patent: 4944903 (1990-07-01), Nilsson
patent: 5071604 (1991-12-01), Tsujikura et al.
patent: 5128077 (1992-07-01), Stevenson et al.
patent: 5147195 (1992-09-01), Cloeren
Bridgestone/Firestone Inc.
Maria Carmen Santa
Thurlow Jeffery R.
LandOfFree
Extrusion apparatus and method with pressure equalization does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extrusion apparatus and method with pressure equalization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion apparatus and method with pressure equalization will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-220945