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. 11, 2004
Filed:
Oct. 29, 2001
Michael Allman, Wilson, NC (US);
Eduardo Lauer, Zebulon, NC (US);
Nomacorc L.L.C., Zebulon, NC (US);
Abstract
A plastic foamed synthetic closure for use with liquid bearing containers which closely simulates natural cork products is realized by incorporating color concentrates into the polymer melt and forming the color concentrates into elongated streaks. The desired emulation is further enhanced by arcuately pivoting the foamed plastic material during the production to form curved or sinusoidal-shaped streaks. This invention also provides manufacturing methods for mass producing individual products in a continuous motion casting system wherein fully complete products are formed in polymer casting members, which receive foam material exiting from the die and allow the foamed material to be formed in a continuous operation in the casting members. Finally, the present invention also teaches a unique system for maintaining and delivering carbon dioxide in its supercritical phase for use as a blowing agent.