METHOD OF PRODUCING A MAT CONSISTING OF FILAMENT LOOP AGGREGATIONS

摘要

In this method of producing a mat consisting of filament loop aggregations, against the step of forming a fisrt filament loop aggregation low in the filament density wherein wherein many filaments made by extruding a thermoplastic synthetic resin out of a die and arranged longitudinally and laterally at intervals are continuously molded, are present on a water surface boiling while keeping a filament temperature close to the temperature at the time of molding by heating while the filament bundle is vertically lowered toward a cooling water surface and are sunk into water in the vertical direction while being controlled to be at a speed lower than the filament extruding molding speed, while a high density thermoplastic synthetic resin layer is conveyed under heating by a conveyer controlled to be at a feeding speed equal to the sinking speed in water of the above mentioned filament loop aggregation and is sunk into the cooling water along the outside of the filament loop aggregation at the delivery end, said filament loop aggregation and thermoplastic synthetic resin layer are fused together on their contact surface.