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:
Aug. 07, 2001
Filed:
Jun. 28, 1999
Alfred Hirschvogel, Langweid, DE;
Oswin Öttinger, Meitingen, DE;
Bernd Schellenberger, Gersthofen, DE;
Mike Römmler, Los Angeles, CA (US);
SGL Technik GmbH, Meitingen, DE;
Abstract
A packing yarn and a method of manufacturing a packing yarn utilize at least two bands that are at most 5 mm wide and are joined together by a yarn manufacturing method. The bands are formed of a laminate having at least one layer of flexible graphite foil and at least one layer of a plastic foil with a tensile strength of at least 25 MPa and an elastic modulus of at least 0.4 GPa. The layers of graphite foil and plastic foil are joined by adhesive bonding, by a non-adhesive-like coupling agent or by welding. The bands are produced from the laminates by cutting, which is preferably effected continuously. The advantages thereof are that strips or bands of flexible graphite which have a tensile strength totally inadequate for the manufacture of packing yarns are altered in terms of their mechanical properties in such a way that they may be processed by known methods in an efficient manner into packing yarns, solely through reinforcement with a plastic foil and without using further reinforcing agents such as, for example, yarns, fibers or wires.