Flat sealing material in the form of a reinforced composite...

Details Flat sealing material in the form of a reinforced composite... Flat sealing material in the form of a reinforced composite...

2011-03-29

2011-03-29

Ruthkosky, Mark (Department: 1783)

Stock material or miscellaneous articles

Structurally defined web or sheet

Weight per unit area specified

C428S212000, C428S220000

Reexamination Certificate

active

07914882

ABSTRACT:
The invention relates to a stable high-performance flat sealing material for application at a temperature up to 330° C. which is compacted by heat and pressure in such a way that a composite film, i.e. a reinforced (fibrous) film is obtainable by compressing one or several non-woven fabrics or one or several non-woven mat weaves at a predetermined pressure and temperature. The inventive flat sealing material is suitable for highly stressed joints, in particular for cylinder head gaskets. The thus produced composite film or the (fiber and/or binder) reinforced film has the layer thicknesses ranging from 0.01 to 3.0 mm obtainable in one operation from one or several non-woven fabric layers, thereby making it possible for the first time to obtain the layer thicknesses of 0.01 mm using the inventive materials.

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