A synthetic resin feeding apparatus to mold products by opening or closing, through a rotary valve, a bi-directional channel connected to a T-die. An extruding machine(P) has a breaker(20) arranged in a flow channel(10). The extruding machine has one side on which a pipe block equipped with a chilling pipe is joined through a bolt and the other side on which a pipe block equipped with chilling pipes and a heating pipe is joined through a bolt. The pipe block has one side on which a roller drum is installed through a supporter, and a filter screen is wound on the roller drum. The filter screen is discharged to the outside through a central through hole of the pipe block and a front end of the breaker. A joint block(J) is connected to a front end of the extruding machine, and has inner flow channels(10',10'') with centers on which rotary valves(60,60') are arranged. The rotary valves have resin feeding holes, and rear ends where bolts are tightened. The inner flow channels are connected to nozzles(70,70') of a T-die(T) such that synthetic resin molten solution is supplied from the extruding machine to the T-die. The chilling pipe arranged in the pipe block has a cooling temperature of 8 to 12 deg.C, and the heating pipe has a heating temperature of 120 to 200 deg.C.
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