19 is connected to said pipe 21 which is also connected through a valve 25 to a water pressure passageway 26 said water pressure passageway 26 is also connected through a valve 27 to an air compressor 28 with an outlet 29 of said passageway 26 being connected to the cooling water passageway 14 of the rotary shaft 8 of said rotary supporting stand 9 numeral 30 denotes a covering for preventing resin pellets from scattering in any directions being mounted on the outer periphery of the cutter means 7 and provided with an outlet 31 for draining resin pellets and water in the lower portion of the covering 30 said die 5 is bored radially with a plurality of holes 32 wherein sheathed heater means 33 are buried respectively so that said die 5 is not cooled down by the cooling water w whereby a quantity of resin material streaming from the mold holes 6 toward an outlet thereof being adapted to prevent the quantity from beihg hardened to block therein said heater means 33 is controllably adjustable by electricity incidentally 34 is an extruding screw and 35 is a strand mounted at the side of an extruding portion of said barrel 3 referrence will now.