Apparatus for recycling resin scrap

An apparatus for recycling resin scrap, the apparatus having an upstream side and a downstream side and comprising:

• a cylinder having opposite first and second ends and an intermediate portion therebetween, the cylinder including an inlet port for supplying resin material, comprising thermosetting resin and thermoplastic resin, disposed at the first end, an outlet port for discharging recycled resin composition disposed at the second end, a passage in the cylinder connecting the inlet port and the outlet port, a supply port for supplying a hydrolyzing agent to the passage disposed at the intermediate portion, and degassing means for discharging vapors from the passage to outside the cylinder disposed downstream with respect to the supply port;
• delivering means disposed in the passage of the cylinder for delivering the resin material through the passage, and including a plurality of delivering members, kneading members and resistors;
• thereby defining a melting region, a hydrolysis region, and a degassing region in the passage of the cylinder in this order from the upstream side to the downstream side;
• said apparatus further including means for maintaining a pressure of 10 to 100 kgf/cm.sup.2 in the hydrolysis region during the recycling of the resin scrap which means includes one of the resistors positioned at each of an upstream side and a downstream side of the hydrolysis region, and that portion of the cylinder along the hydrolysis region being free of a vent for discharging vapors to the outside of the cylinder.