초록 ▼

Disclosed is a method for preparing laminated thermoplastic composite structures comprised of at least one filler reinforced thermoplastic layer and at least one reinforcing layer of glass-fiber mat contiguous to at least one surface of said reinforced layer wherein an intermediate non-reinforced po

Disclosed is a method for preparing laminated thermoplastic composite structures comprised of at least one filler reinforced thermoplastic layer and at least one reinforcing layer of glass-fiber mat contiguous to at least one surface of said reinforced layer wherein an intermediate non-reinforced polymeric layer is applied between each glass-fiber mat/reinforced layer interface thereby achieving thorough impregnation of the glass-fiber mat with thermoplastic resin.

대표청구항 ▼

A method of continuously laminating a polyamide sheet comprised of at least one layer of filler reinforced polyamide resin contiguous to a resin impregnated reinforcing glass mat, comprising steps of: feeding at least one layer of filler reinforced polyamide resin between a pair of laminating rolls,

A method of continuously laminating a polyamide sheet comprised of at least one layer of filler reinforced polyamide resin contiguous to a resin impregnated reinforcing glass mat, comprising steps of: feeding at least one layer of filler reinforced polyamide resin between a pair of laminating rolls, said one layer heated to above its melt temperature; feeding a layer of fiberglass mat between the pair of laminating rolls with the at least one layer of filler reinforced polyamide; feeding a layer of unfilled polymer between the fiberglass mat and each filler reinforced polyamide layer, said unfilled polymer layer being heated to at least its melt temperature, less viscous than the filler reinforced layer, and compatible with the polyamide of the filler reinforced polyamide layer to the laminating rolls; and laminating the at least one layer of filler reinforced polyamide layer to the layer of glass mat, with layers of unfilled polymer between the fiberglass mat and each filler reinforced polyamide layer, between the laminating rolls, whereby the less viscous, heated, unfilled polymer layer is thoroughly impregnated into the glass mat and each filler reinforced polyamide layer adheres to the impregnated glass mat. A method of continuously laminating a thermoplastic sheet comprised of at least one layer of filler reinforced thermoplastic resin contiguous to a resin impregnated reinforcing glass mat, comprising the steps of: feeding at least one layer of filler reinforced thermoplastic resin between a pair of laminating rolls, said one layer heated to above its melt temperature; feeding a layer of fiberglass mat between the pair of laminating rolls with the at least one layer of filler reinforced thermoplastic; feeding a layer of unfilled polymer between the fiberglass mat and each filler reinforced thermoplastic layer, said unfilled polymer layer being heated to at least its melt temperature, less viscous than the filler reinforced thermoplastic layer, and compatible with the thermoplastic of the filler reinforced thermoplastic layer; and laminating the at least one layer of filler reinforced thermoplastic layer to the layer of glass mat, with layers of unfilled polymer between the fiberglass mat and each filler reinforced thermoplastic layer, between the laminating rolls, whereby the less viscous, heated, unfilled polymer layer is thoroughly impregnated into the glass mat and each filler reinforced thermoplastic layer adheres to the impregnated glass mat.