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Assignee3M Innovative Properties Company
InventorsMichael A. Johnson, Clayton A. George, Robert J. Boettcher
Estimating the term…
A multi-layer article which may be provided in the form of a tape comprises a conformable, compressible, melt flow-resistant core layer having first and second major surfaces, a sealant layer on the first major surface of the core layer, and optionally a bonding layer on the second major surface of the core layer. The sealant layer and the bonding layer each have a surface available for contacting a separate substrate. Various thermoset and foam core layers are disclosed as are thermosettable and thermoplastic sealant layers. The articles are useful for sealing two substrates together, particularly where one of the substrates is glass. Thus, the articles are especially adapted for sealing motor vehicle windshields to a frame. Various assemblies and methods for producing the same are also described.
An article comprising (a) a conformable, compressible, melt flow-resistant core layer having first and second major surfaces, and (b) a thermosettable sealant layer on said first major surface of said core layer, wherein said thermosettable sealant layer, upon curing, is not aggressively and permanently tacky at room temperature and can not firmly adhere to a wide variety of dissimilar surfaces upon mere contact and more than hand or finger pressure,
An article comprising (a) a conformable, compressible, melt flow-resistant thermoset core layer having first and second major surfaces, and (b) a thermosettable sealant layer on said first major surface of said core layer, wherein said thermosettable sealant layer, upon curing, is not aggressively and permanently tacky at room temperature and can not firmly adhere to a wide variety of dissimilar surfaces upon mere contact and more than hand or finger pressure,
An article comprising (a) a conformable, compressible, melt flow-resistant core layer having first and second major surfaces, and (b) a thermoplastic sealant layer on said first major surface of said core layer, said sealant layer having a surface available for contacting a substrate, and further wherein said sealant layer is formed from a thermoplastic polymer selected from the group consisting of polyurethanes, polyesters, polyaromatic-containing block copolymers, and silicones, wherein said thermoplastic sealant layer, as solidified upon cooling, is not aggressively and permanently tacky at room temperature and can not firmly adhere to a wide variety of dissimilar surfaces upon mere contact and more than hand or finger pressure.
An article comprising (a) a conformable, compressible, melt flow-resistant thermoset core layer having first and second major surfaces, (b) a sealant layer on said first major surface of said core layer and having a surface available for contacting a first substrate, wherein said sealant layer, upon either curing or solidification upon cooling, is not aggressively and permanently tacky at room temperature and can not firmly adhere to a wide variety of dissimilar surfaces upon mere contact and more than hand or finger pressure,
An article comprising (a) a conformable, compressible, melt flow-resistant core layer comprising a closed cell foam having first and second major surfaces and (b) a sealant layer provided on said first major surface,
Dependencies are inferred from the claim text.