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. 05, 1981
Filed:
Feb. 01, 1979
Donald G Sauer, Harwinton, CT (US);
National Can Coporation, Chicago, IL (US);
Abstract
A process and apparatus for forming a laminated plastic article, especially a container. In one formation sequence, a flattened preform of desired perimeter configuration is formed, which preferably is multilayered, directly from thermoplastic materials. In another formation sequence, a preform is positioned in a thermoforming apparatus wherein, with edge portions of the preform is clamped and the midportions are mandrel-formed into a body having continuous integral side and bottom wall portions. This body is then trimmed and blow-molded to produce a desired product article. Residual portions of the starting preform can be trimmed away from the lip portions of the product article if desired.