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US 6,610,771 B1Granted
Gaskets
AssigneeFlexitallic Investments, Inc.
InventorsJohn R. Hoyes, Alan W. Atkinson, Stephen P. Bond, Adam M. West
Life of this patent
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AssigneeFlexitallic Investments, Inc.
InventorsJohn R. Hoyes, Alan W. Atkinson, Stephen P. Bond, Adam M. West
Estimating the term…
A gasket is described. The gasket comprises a sealing layer and a support layer. The sealing layer is formed from a resilient material which comprises a CEV component in a proportion of at least 25% w/w of the sealing layer. The CEV component is at least partially derived from dry CEV. A hydrolysis resistant polymer to improve the water resistance of the sealing layer is also provided in the proportion of less than 20% w/w of the sealing layer. Generally, the level of CEV falls within the range 25-80% w/w of the sealing layer. A method of producing a gasket is also described. The method involves applying a wet sealing layer dough to a support material, and drying the wet sealing layer dough on the support material. The solids content of the wet sealing layer dough prior to the drying step is in the range 30-80% w/w of the dough material.
A gasket comprising a sealing layer and a support layer the sealing layer being formed from a resilient material which comprises a chemically exfoliated vermiculite (CEV) component in a proportion of at least 25% w/w of the sealing layer, said CEV component being at least partially derived from dry CEV, and a hydrolysis resistant polymer to improve the water resistance of said sealing layer wherein the proportion of said polymer does not exceed 20% of the sealing layer, and wherein said chemically exfoliated vermiculite component includes sufficient dry CEV to provide a wet sealing layer dough with a reduced water content which is capable of being dried before substantial skinning has occurred.
A gasket comprising a sealing layer and a support layer the sealing layer being formed from a resilient material which comprises a chemically exfoliated vermiculite (CEV) component in a proportion of at least 25% w/w of the sealing layer, said CEV component being at least partially derived from dry CEV, and a hydrolysis resistant polymer to improve the water resistance of said sealing layer wherein the proportion of said polymer does not exceed 20% of the sealing layer, wherein the level of CEV is within the range of 25% to 80% w/w of said sealing layer, and wherein said chemically exfoliated vermiculite component includes sufficient dry CEV to provide a wet sealing layer dough with a reduced water content which is capable of being dried before substantial skinning has occurred.
A gasket comprising a sealing layer and a support layer the sealing layer being formed from a resilient material which comprises a chemically exfoliated vermiculite (CEV) component in a proportion of at least 25% w/w of the sealing layer, said CEV component being at least partially derived from dry CEV, and a hydrolysis resistant polymer to improve the water resistance of said sealing layer wherein the proportion of said polymer does not exceed 20% of the sealing layer, wherein the proportion of said polymer is less than 15% w/w of said sealing layer, and wherein said chemically exfoliated vermiculite component includes sufficient dry CEV to provide a wet sealing layer dough with a reduced water content which is capable of being dried before substantial skinning has occurred.
A gasket comprising a sealing layer and a support layer the sealing layer being formed from a resilient material which comprises a chemically exfoliated vermiculite (CEV) component in a proportion of at least 25% w/w of the sealing layer, said CEV component being at least partially derived from dry CEV, and a hydrolysis resistant polymer to improve the water resistance of said sealing layer wherein the proportion of said polymer does not exceed 20% of the sealing layer, wherein the level of CEV is within the range of 25% to 80% w/w of said sealing layer, wherein the proportion of said polymer is less than 15% w/w of said sealing layer, and wherein said chemically exfoliated vermiculite component includes sufficient dry CEV to provide a wet sealing layer dough with a reduced water content which is capable of being dried before substantial skinning has occurred.
A method of manufacturing a gasket comprising the steps of:
Dependencies are inferred from the claim text.