Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1989-12-28
1992-04-21
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
264 406, 264173, 264327, 4251311, 4251335, 425144, 425462, B29C 4706
Patent
active
051065622
ABSTRACT:
Methods and apparatus for reducing the impact of a higher temperature polymeric melt stream element on a lower temperature polymeric melt stream element, and vice versa. The methods include: supercooling the hotter melt stream element, exposing one or more melt stream elements to an undesirable thermal condition for a limited period of time, and/or using one or more layers as a heat sink. The apparatus is provided by a modified die in which one of the melt stream elements having the disparate temperatures traverses the die in a foreshortened path in the direction of extrusion of the extrudate.
REFERENCES:
patent: 3415920 (1968-12-01), Lee et al.
patent: 3635624 (1972-01-01), Nakakoshi et al.
patent: 3707590 (1972-12-01), Wiggins et al.
patent: 3933964 (1976-01-01), Brooks
patent: 3949042 (1976-04-01), Utz
patent: 3980744 (1976-09-01), Cogswell
patent: 4053270 (1977-10-01), Collier et al.
patent: 4216253 (1980-08-01), Bonnebat et al.
patent: 4379117 (1983-04-01), Baird, Jr. et al.
patent: 4484883 (1984-11-01), Honda et al.
patent: 4798526 (1989-01-01), Briggs et al.
patent: 4804510 (1989-02-01), Leucke et al.
patent: 4842791 (1989-06-01), Gould et al.
Blemberg Robert J.
Eckstein John P.
American National Can Company
Stenzel Robert A.
Thurlow Jeffery
LandOfFree
Extrusion methods and apparatus 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 methods and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion methods and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1584333