초록 ▼

A composite synthetic leather sheet material and method of manufacture thereof is disclosed. The composite sheet material comprises outer thermoplastic polymeric layers bonded to opposite faces of a reinforcing textile fabric, preferably a porous woven fabric of high strength material, by an interme

A composite synthetic leather sheet material and method of manufacture thereof is disclosed. The composite sheet material comprises outer thermoplastic polymeric layers bonded to opposite faces of a reinforcing textile fabric, preferably a porous woven fabric of high strength material, by an intermediate polymeric layer which fills the interstices of the fabric and has opposite surfaces disposed adjacent the fabric surfaces to engage and firmly secure the outer thermoplastic polymeric layers in the composite sheet. One of the outer thermoplastic layers is foamed to a relatively high degree and the outer surface of the foam is mechanically abraded or buffed to provide a suede-like leather appearance thereto. The other outer thermoplastic layer may be foamed and provided with an embossed leather-like surface appearance. The sheet material product is reversible in use, completely heat-sealable, flow-moldable, and printable on both sides for subsequent manufacture of synthetic leather good articles. The polymeric layers of the composite sheet are preferably applied to the reinforcing fabric in plastisol form, and all of the layers may be foamed in varying degrees, if desired. The sheet material is produced by applying a first thermoplastic polymeric layer to an embossed release paper, heating the first layer to a tacky state, applying a reinforcing fabric to the surface of the tacky layer, and impregnating the fabric with a second polymeric composition to fill the interstices and contact the lower polymeric layer on the release paper. The sheet is heated to gel the two polymeric layers and a third foamed or foamable thermoplastic polymeric layer is applied to the exposed surface of the sheet. The resultant composite is heated to foam, cure and fusion bond the polymeric layers, and the unembossed foamed polymeric layer is thereafter mechanically abraded to impart a suede-like leather appearance thereto.

대표청구항 ▼

A fabric-reinforced composite sheet material having opposite surfaces of leather-like appearance comprising: (a) a textile fabric having a first polymeric layer disposed within and filling the interstices of the fabric to the extent that it is present adjacent opposite faces of the fabric; (b) a sec

A fabric-reinforced composite sheet material having opposite surfaces of leather-like appearance comprising: (a) a textile fabric having a first polymeric layer disposed within and filling the interstices of the fabric to the extent that it is present adjacent opposite faces of the fabric; (b) a second thermoplastic polymeric layer on one face of the fabric bonded to said first polymeric layer and having an outer leather-like surface appearance; (c) a third thermoplastic essentially fiber-free polymeric foam layer on the opposite face of said fabric bonded to said first polymeric layer and having an outer suede leather-like surface appearance; and wherein (d) said fabric faces are completely covered with the polymeric layers, and both leather-like outer surfaces of the composite sheet are heat-sealable, flow-moldable and reversible for subsequent manufacture of products having a natural leather-like appearance. A method of producing a composite, fabric-reinforced sheet material having a leather-like surface appearance on both faces thereof comprising the steps of providing a release paper, applying a first layer of thermoplastic polymeric material to the surface of the paper, heating the first polymeric layer to a tacky state, applying a porous textile reinforcing fabric to the exposed surface of the tacky polymeric layer on the release paper to adhere one surface thereof to the layer, applying a second layer of polymeric material to the exposed surface of the textile fabric to substantially fully impregnate the interstices thereof and contact said first layer of thermoplastic polymeric material on the release paper, heating said first and second layered textile fabric to substantially gel the first and second layers thereon, applying a third layer of fiber-free foamed or heat-foamable thermoplastic polymeric material to the surface of the reinforcing fabric to contact the second polymeric layer disposed within the interstices thereof, heating the resultant composite layered product to cure and solidify the polymeric material layers and bond the same into a composite structure, and to foam the third thermoplastic layer, if heat-foamable, and mechanically contacting the foamed third polymeric layer surface to impart a suede leather-like appearance thereto.