Packing yarn made of graphite foil and metal foil and method of manufacturing a packing yarn
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United States of America Patent
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May 14, 2002
Grant Date -
N/A
app pub date -
Jun 28, 1999
filing date -
Jun 27, 1998
priority date (Note) -
Expired
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Abstract
A packing yarn and a method of manufacturing a packing yarn composed of at least two bands which are at most 5 mm wide and are joined together by a yarn manufacturing method, include forming the bands of a laminate having at least one layer of flexible graphite and at least one layer of a metal foil with a tensile strength of at least 250 MPa. The layers of graphite foil and metal foil are joined by adhesion or through the use of a non-adhesive-like coupling agent. The bands are produced from the laminates by cutting, which is preferably effected continuously. Advantages thereof are that strips or bands of flexible graphite, which have a tensile strength that is totally inadequate for the manufacture of packing yarns, are altered in terms of their mechanical properties. That is performed solely through reinforcement with a metal foil and without using further reinforcing agents such as, for example, yarns, fibers or wires, in such a way that they may be processed by known methods into packing yarns in an efficient manner.
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