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AssigneesHonda Giken Kogyo Kabushiki Kaisha, Nippon Leakless Ind. Co., Ltd.
InventorsHiromi Kitayama, Tsutomu Tomizawa, Ken Fujiwara, Fumiya Shigeta, Hiroyuki Nakano
Estimating the term…
A compressed sheet comprises: base fibers constituted by inorganic fibers other than asbestos, or organic fibers, or a combination of both; a rubber; rubber chemicals; and fillers. In the compressed sheet a material with both smoothing and reinforcing effects is exposed at least to one of the surfaces of the compressed sheet. A method of manufacturing a compressed sheet comprises the steps of processing a composition for forming the compressed sheet by feeding it into a pair of rolls comprising a hot roll and a cold roll, thereby laminating the composition into a sheet-shaped material on the hot roll, and then peeling off the sheet-shaped laminated material. In this method the composition is fed into the rolls such that a material with both smoothing and reinforcing effects is exposed at least to that surface of the sheet-shaped laminated material which faces the cold roll.
A compressed sheet comprising a base layer having first and second sides and comprising organic fibers and/or inorganic fibers other than asbestos, said base layer further comprising a rubber, vulcanizing agent, vulcanizing accelerator, and fillers;
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
With solid packing compressed between sealing surfaces: with non-metallic packing
Layered products comprising a layer of natural or synthetic rubber: with fibres or particles being present as additives in the layer
Characterised by non-chemical features of one or more of its constituents: fibres
Inorganic compounds: oxides, hydroxides, carbonates
Term ended 12 Jun 2011 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
This invention relates to a compressed sheet to be used as a gasket base material, for example, in a motorcar, a ship, various kinds of apparatuses or the like.
2. Description of the Prior Art
The drawing shows characteristic curves of creep relaxation of a compressed sheet of this invention and that of a comparative example, respectively.
This invention will now be described by way of an embodiment with reference to a comparative example.
In this embodiment, an explanation is made about a compressed sheet in which a material with both smoothing and reinforcing effects is exposed only to one side thereof.
First, those compositions I and II of forming the compressed sheet which do not contain the material with smoothing and reinforcing effects and a composition III of forming the compressed sheet which contain the material with both smoothing and reinforcing effects were prepared.