Sgl Technik Gmbh

Mike R&ouml;mmler

Oswin &Ouml;ttinger

Silvia Mechen

Bernd Schellenberger

Alfred Hirschvogel

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.

Packing yarn made of graphite foil and plastic foil and method of manufacturing a packing yarn

A multilayer sheet having high compressive strength, high heat resistance and low permeability relative to fluids, includes layers of graphite foils and metal foils disposed alternating one upon another and parallel, with the graphite foils joined to the metal foils. Each of two layers forming an upper and a lower boundary of the multilayer sheet is a metal foil having a flat outwardly-directed surface completely covered with and joined to a gas-tight foil made of an organic polymer having a long-term temperature stability of at least 150&deg; C. Preferably, no adhesives are used for joining the foils. The multilayer sheet is preferably used for producing flat gaskets.

Growing community of inventors

Los Angeles, CA, United States of America

Mike Römmler

Growing community of inventors

Los Angeles, CA, United States of America

Mike R&ouml;mmler

Mike Römmler