Polyurethane foam decomposition and regeneration system, polyurethane foam decomposition method, method for producing reaction products, and polyurethane foam decomposition apparatus.

Claims

1. A cylinder having a raw material input port and a discharge port for discharging decomposed material, The cylinder comprises a screw housed within the cylinder, A polyurethane foam decomposition apparatus is provided, wherein the raw material inlet is equipped with an input mechanism for pushing a mixture of crushed polyurethane foam made from polyether polyol and a decomposition agent into the raw material inlet, A apparatus for producing recycled polyurethane foam, using polyether polyol and a reaction product obtained from the polyurethane foam decomposition apparatus as raw materials, A polyurethane foam decomposition and recycling system equipped with the following features.

2. A method for decomposing polyurethane foam using an extruder having a cylinder, A mixture of crushed polyurethane foam and a decomposition agent is introduced into the raw material inlet of the cylinder while being pushed in. The polyurethane foam is decomposed by heating the mixture while transferring it within the cylinder. A method for decomposing polyurethane foam, wherein the cylinder is arranged such that the inner space of the cylinder slopes downward from the raw material inlet side to the discharge side.

3. A method for producing a reaction product of polyurethane foam and a decomposition agent, This is done using an extruder having a cylinder. The mixture of the crushed polyurethane foam and the decomposition agent is pushed into the raw material inlet of the cylinder. The reaction product is obtained by heating the mixture while transferring it in the cylinder. The feeding mechanism for feeding the aforementioned mixture is: It is equipped with a pair of rotors arranged parallel to each other, The rotor has a plurality of teeth arranged in the circumferential direction on its outer surface, A method for producing a reaction product, wherein, between a pair of rotors, the teeth of one rotor face the teeth and grooves between the teeth of the other rotor, so that the pair of rotors are configured to press the mixture alternately between the teeth of one rotor and the teeth of the other rotor.

4. A method for producing a reaction product for manufacturing recycled polyurethane foam, comprising obtaining a reaction product of polyurethane foam and a decomposition agent, This is done using an extruder having a cylinder. The mixture of the crushed polyurethane foam and the decomposition agent is pushed into the raw material inlet of the cylinder. The reaction product is obtained by heating the mixture while transferring it in the cylinder. The mixture is introduced using an introduction mechanism equipped with a pair of rotors arranged parallel to each other. A method for producing a reaction product for manufacturing recycled polyurethane foam, comprising rotating each of the rotors in opposite directions to draw the mixture between a pair of rotors and to push the mixture into the raw material inlet.

5. A cylinder having a raw material input port and a discharge port for discharging decomposed material, The cylinder comprises a screw housed within the cylinder, The aforementioned raw material inlet is equipped with an input mechanism that pushes a mixture of crushed polyurethane foam and a decomposition agent into the raw material inlet. The aforementioned feeding mechanism is It is equipped with a pair of rotors arranged parallel to each other, The rotor has a plurality of teeth arranged in the circumferential direction on its outer surface, A polyurethane foam decomposition apparatus, wherein, between a pair of rotors, the teeth of one rotor face the teeth and grooves between the teeth of the other rotor, so that the pair of rotors press the mixture alternately between the teeth of one rotor and the teeth of the other rotor.