Provided is a production method of an FRP precursor. The method includes: a pre-coating step of applying a resin varnish having a filler content of 5 vol % or less in a solid content thereof, to a sheet-shaped aggregate, and a melt-pasting step of melt-pasting a pair of resin films, each having a filler content of 30 vol % or more, to both surfaces of the aggregate, after the pre-coating step.

The present invention relates to a method for producing a unidirectional tape with a surface polymer layer, the method comprising the steps of a) providing an impregnation slurry comprising particles of a polymer, water, optionally a surfactant, optionally an organic carrying medium, optionally organic compounds and optionally surface active compounds, and providing a pressing tool having a surface profile structure, the surface profile structure having a surface roughness Ra of 1 to 20 μm, preferably of 2 to 10 μm, more preferably 3 to 7 μm, b) impregnating a unidirectional fiber layer comprising unidirectional fibers with the impregnation slurry to obtain an impregnated unidirectional fiber layer comprising the particles of the polymer, c) pressing at a surface of the impregnated unidirectional fiber layer with the surface profile structure to move at least some of the particles of the polymer within the impregnated unidirectional fiber layer onto the surface to form a surface polymer layer on the unidirectional fiber layer, and d) obtaining a unidirec

Floor panel for forming a floor covering, where the floor panel includes a carrier on the basis of a thermoplastic material and a top layer provided on the carrier. The thermoplastic material is free from plasticizers or includes a plasticizer in an amount up to maximum 20 phr, where the thermoplastic material is foamed or expanded, and where the carrier is provided with a reinforcement layer.

Floor panel for forming a floor covering, where the floor panel includes a carrier on the basis of a thermoplastic material and a top layer provided on the carrier. The thermoplastic material is free from plasticizers or includes a plasticizer in an amount up to maximum 20 phr, where the thermoplastic material is foamed or expanded, and where the carrier is provided with a reinforcement layer.

In the method for adhering a resin film with an aggregate under an atmospheric pressure in which workability is excellent and spouting of the resin from an edge portion of the aggregate can be suppressed, the present invention provides a method for producing an FRP precursor with excellent resin filling property into bulk voids of the aggregate as well as a method for producing an FRP. Specifically, provided is the method for producing the FRP precursor by adhering a thermosetting resin film to one surface of an aggregate that is in a form of a sheet under an atmospheric pressure, wherein the method includes a process in which the thermosetting resin film and the aggregate are press-adhered by heating by means of a pressure roll having a temperature in a range of +5° C. to +35° C. relative to a temperature at which a minimum melt viscosity of the film is exhibited.

A method of producing a composite material including carbon fiber and a melt-fabricable fluororesin, the method including: (1) preparing a prepreg by heating and compressing a stack of opened carbon fiber and a film of a melt-fabricable fluororesin at a temperature not lower than a melting point of the fluororesin, the film having a back tension set to 3.0 N/cm.sup.2 or less; and (2) preparing a composite material by heating and compressing one or more sheets or pieces of the prepreg stacked in a thickness direction at a temperature not lower than the melting point of the fluororesin.

A panel for forming a floor covering has a substrate including at least a layer of thermoplastic material, where the panel, above the layer, has at least also a printed decor and a translucent or transparent wear layer. The layer also includes at least individual fibers having a length greater than 1 millimeter, where the individual fibers are loose and freely distributed with the layer of thermoplastic material.

A panel for forming a floor covering, where this panel includes a substrate including at least a layer of thermoplastic material, where the panel, above the layer, comprises at least also a printed décor and a translucent or transparent wear layer. The layer also includes at least individual fibers having a length greater than 1 millimeter, where the individual fibers are loose and freely distributed within the layer of thermoplastic material.

A chopped roving thermoplastic composite sheet includes a web or mesh of chopped rovings and a thermoplastic resin that fully saturates the web or mesh of chopped rovings. The web or mesh of chopped rovings is not mechanically bonded and does not include a binder that bonds or adheres the chopped rovings together other than thermoplastic resin. As such, the thermoplastic resin and the web or mesh of chopped rovings are able to flow and conform to a mold or cavity when the chopped roving thermoplastic composite sheet is pressed within the mold or cavity and when the chopped roving thermoplastic composite sheet is heated to above the melting temperature of the thermoplastic resin.

Prepreg tapes suitable for automated placement process are formed by slitting a sheet of partially impregnated prepreg. The partially impregnated prepreg is composed of unidirectional fiber tows partially embedded in a resin layer and has a continuous resin surface only on one side. In some embodiments, one or two nonwoven veil(s) is/are incorporated into the partially impregnated prepreg.