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:
Nov. 22, 1983
Filed:
Jun. 15, 1981
Thomas W Winstead, Baltimore, MD (US);
Maryland Cup Corporation, Owings Mills, MD (US);
Abstract
An apparatus for continuously extruding, biaxially orienting and intermittently forming molded products from a web of thermoplastic material and further, continuously separating the products from the web selvage, stacking and handling the products and recycling the web selvage for further extrusion. The apparatus uses intermittent molding and biaxial orientation devices into which configuration the continuously extruded web is interfaced by continuous-to-intermittent interfacing loop arrangement which preserves the dimensional and orientational integrity of the web and maintains sufficient thermal stability therein to provide molded products which are free from defects such as stretch marks and other inertial and thermal discontinuities normally anticipated in cases of intermittent web advance of thermoplastic material at thermoformalbe temperature levels.