The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 1984
Filed:
Nov. 19, 1981
Applicant:
Inventor:
Thomas W Martinek, Covington, IN (US);
Assignee:
Teepak, Inc., Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
2642092 ; 264558 ; 264108 ; 264202 ; 264310 ; 264312 ; 4253 / ; 425380 ; 425381 ; 425466 ; 425467 ;
Abstract
This relates to a die assembly for extruding tubular casing films wherein there are counter-rotating die members. One of the die members is mounted for shifting relative to its base under the influence of hydrodynamic pressures of the flowing extrudate so as to be self-centering relative to the other die member. This provides for a high shear cylindrical area leading into the die orifice which is of uniform thickness and which will provide for uniform fiber orientation due to the zero runout of the rotating dies.