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:
Jan. 16, 1990
Filed:
Dec. 04, 1987
Peter Albrecht, Hamburg, DE;
Karl-Heinz Balkau, Oststeinbek, DE;
Vinco Cujic, Hamburg, DE;
Tilman Doring, Hamburg, DE;
Claus Horwege, Hamburg, DE;
Wolfgang Reymann, Hamburg, DE;
Klaus Vogel, Barbuttel, DE;
Walter Wiedenfeld, Hamburg, DE;
Krupp Corpoplast, Hamburg, DE;
Abstract
In a process for producing hollow bodies of oriented thermoplastic material, a hollow blank having a bottom portion and a substantially cylindrical wall portion with an opening at its end remote from its bottom portion is subjected to pre-expansion in the region of the opening and then thermofixing in a subsequent treatment step. The thermofixing operation may be preceded by a mechanical expansion operation for orienting the plastic material forming the wall portion of the blank.