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:
Jun. 17, 1997
Filed:
Sep. 27, 1995
Applicant:
Inventors:
Michael Meier-Kaiser, Pfungstadt, DE;
Horst Greb, Reinheim, DE;
Assignee:
Roehm GmbH Chemische Fabrik, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 401 ; 264412 ; 264 407 ; 264175 ; 2642102 ; 425140 ; 425327 ;
Abstract
The height of the bulge in the glazing roll gap of a supercalender in the extrusion of plates or films of a thermoplastic material smoothed on both sides may be controlled by measuring the location of the edges of the plastic sheet by means of measuring sensors and regulating the speed of the roll or the rate of extrusion of the polymer melt based on the width of the sheet so that the height of the bulge is always kept within tight tolerances.