Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Reexamination Certificate
2006-02-17
2009-12-08
Del Sole, Joseph S. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Forming continuous work followed by cutting
C264S177160, C264S177170, C264S167000, C264S175000, C264S210200, C264S211120, C264S293000, C264S316000, C264S294000, C264S296000, C425S375000, C425S297000, C425S394000, C425S397000, C425S403000, C425S377000, C425S380000, C425S382300
Reexamination Certificate
active
07628945
ABSTRACT:
Extruding radiused plastic articles with an extruding machine terminating in die defining a path of travel between upstream and downstream ends. The die has an outlet opening extending longitudinally in the direction of the path of travel, the opening oriented so a polymeric material is extruded therefrom in a direction approximately perpendicular to the path of travel through the die. Oppositely rotating rollers of tapered diameters are disposed side by side to receive the extrudate therebetween, the rollers arranged so their longitudinal axes intersect and their smaller diameters are oriented towards the downstream end of the die. Extrudate passing through the opening is characterized by a higher flow rate proximate the upstream end thereof to thereby form a radiused extrusion. The rollers draw the extrudate from the die outlet opening without significantly altering the radiused shape of the fluid plastic material.
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Internet Page—Lowe's, Fabrics and Wraps, United Rubber Recycling 24″ Mulch Mat Tree Ring, Item #80694, Model 24000.
Del Sole Joseph S.
Sultana Nahida
Young & Basile
LandOfFree
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