JP2007015384A - Extrusion molding equipment of refuse for manufacturing coke raw material and method for manufacturing molding using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a molding in an extrusion molding machine in which a molding can secure the quality used as a coke raw material even if the range of fluctuation of such as a composition, moisture or the like of refuse to be molded become large and economical and safe process automation is possible. <P>SOLUTION: The method for manufacturing a massive molding product 13 which can be used as a coke raw material comprises the steps of: feeding the crushed refuse mainly consisting of plastics into an extrusion molding machine 14; extruding from a nozzle 25 of a leading section in the state of heating to make a molding 38; and furthermore cutting the molding 38. The extrusion molding machine 14 is provided with a molding temperature sensor 29 which measures the molding temperature of the molding 38 and a heater which heats the refuse. When a measurement value t by the molding temperature sensor 29 exceeds a setting temperature ta, a specific volume of water is automatically sprayed to the loaded refuse, and further the heater is turned on/off by monitoring the molding temperature sensor 29 to maintain the processing temperature of the molding 38. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention provides, for example, a waste extrusion molding facility for producing coke raw material by molding plastic general waste such as sorted household waste so that it can be used as a coal substitute raw material for a coke oven facility. The present invention relates to a method for producing a molded product used .

Plastics that are produced in large quantities today are not decomposed by microorganisms, are stable in air and water, and generate a high heat when burned, causing problems such as damaging the incinerator. have. Therefore, for example, the volume of waste is reduced as a treatment of plastic waste such as sorted household waste, and the waste is reduced to pellets by an extrusion molding machine to reduce the volume of waste. It is molded into. In the method of manufacturing a molded product, for example, the plastic in a compressed package is unpacked, crushed, sorted, and crushed, and then the crushed plastic is supplied to a screw-type extrusion molding machine that rotates at a constant speed. It is melted by compression by the extrusion of the screw of the molding machine, frictional heat, frictional heat between plastics, manufactures a molded product through a nozzle, and cuts the molded product to a predetermined length to manufacture a massive molded product Yes.

However, in the method of manufacturing a molded product in the conventional extruder, the quality control (size, bulk specific gravity, mass ratio, etc.) of the molded product is not performed because the purpose is to reduce the landfill disposal capacity of waste. In addition, there was no means for continuously measuring the moisture content even if the moisture content was adjusted according to the water content of the waste in order to perform a certain quality control. For this reason, for example, when the amount of water contained in the waste is small, the processing temperature rises to an appropriate moldable temperature or more due to overheating, and the thermoplastic resin is extruded from the nozzle in an excessively melted state. It becomes difficult to cut the molded product, and it adheres to the periphery of the apparatus after extrusion and solidifies, which causes failure of the apparatus. On the other hand, when the amount of water contained in the waste is large, the processing temperature does not rise to an appropriate moldable temperature, and as a result, a lot of powder is generated in the molded product and it tends to collapse, or for size adjustment. There is a problem that a large amount of powder is generated during the cutting treatment, and when the molded product is reclaimed, it has not been a major problem, but it is difficult to effectively use the molded product as a coke raw material. The extruder is equipped with a heater, which is used only to melt the plastic at start-up (at the start of operation), but is stopped during normal operation to prevent overheating. Yes.

JP 2002-178388 A

In order to solve the above-mentioned problems, the applicant can maintain a molding temperature at an appropriate processing temperature in Patent Document 1 (Japanese Patent Application No. 2000-377825), thereby producing a molded product that can be effectively used as a coke raw material. In order to achieve this, a method for producing a molded product in an extrusion molding machine has been proposed, in which a predetermined amount of water is automatically injected into the waste put into the extrusion molding machine. However, in this method of manufacturing a molded product, the heater is used only at startup, and the temperature of the molded product is controlled only by water injection. , There is a limit to the controllable temperature range and responsiveness, especially when molding plastics with a lot of moisture, even if the amount of water injection is 0 (zero), the temperature of the molded product does not reach the predetermined temperature, coke There was a fear that a molded product with satisfactory performance as a raw material could not be produced. In addition, it is a method that maintains the moldable temperature only by compression by screw extrusion, frictional heat, and frictional heat between plastics. Therefore, it is a method that converts electrical energy into mechanical energy and then heat energy, and is more economical. An ideal molding method was desired.
The present invention has been made in view of such circumstances, and even if the fluctuation range of waste components, moisture, etc. to be molded increases, the quality of the molded product that can be used as a coke raw material can be ensured, and it is economical. An object of the present invention is to provide a waste extrusion molding facility capable of safely processing and a method for producing a molded product using the same.

Extrusion equipment waste producing shaped products available bulk as a coke raw material according to the present invention along the object, a casing having an opening in the upper waste of crushed plastic principal is turned on,
A heating plate provided at the downstream end of the casing and a die plate connected to the downstream side of the heating plate;
A screw that is horizontally disposed inside the casing, rotates and pushes into the hole of the die plate while semi-melting the thermoplastic resin in the waste supplied from the opening,
Nozzles provided on the downstream side of the die plate and each having an extrusion port communicating with a hole of the die plate;
A rotary blade that is provided on the downstream side of the die plate, and that cuts the molded product extruded from the nozzle every predetermined length;
A jet nozzle capable of pouring water toward the opening, and a flow rate adjusting valve for adjusting the amount of water poured from the jet nozzle;
Comparing _a measured value t by a molded product temperature sensor that is provided in the nozzle and measures the temperature of the molded product and a preset temperature t _{a of the} molded product that is input in advance, a required water injection amount is calculated, and temperature indicating controllers that control such molding temperature of the molded product becomes the set temperature t _a to open and close the flow control valve,
A heater embedded in the heating plate for heating the die plate and a temperature sensor for measuring the temperature of the heating plate;
When the measured value T of the temperature sensor detects the upper limit temperature T _H of the heating plate, the heater is turned off, and the measured value t of the molded product temperature sensor is set to the set temperature t _b (for example, the heater on / off). If a temperature lower than the set temperature t _a of the molding, when it is equal to the set temperature t _a of the molding, or molding the set temperature t when the temperature is higher than _a) compared with the set temperature t _The heater is turned on and off at _b .

When the thermoplastic resin contained in the waste is melted and solidified, the composition of the thermoplastic resin is not constant, for example, the difference in the composition of materials such as polyethylene and polystyrene, the difference in the thickness of the plastic, etc. Further, the amount of water contained is usually not constant. Furthermore, for example, when the amount of water contained in the waste is large, the frictional heat between the screw and the waste is insufficient, and the waste cannot be hardened, resulting in a powdery molded product. Conversely, when extrusion molding is performed when the amount of water contained in the waste is small, the frictional heat between the screw and the waste becomes excessive, which may exceed the upper limit of the proper molding temperature range. is there. When molding is performed in a state exceeding the upper limit, the thermoplastic resin is discharged from the extrusion molding machine in a semi-solid or liquid state, so that it is difficult to secure a predetermined shape, and molding Products may stick to each other. Such a molded product cannot be used as a product in which quality is important like a coke raw material. However, in the present invention, water injection is controlled so that the processing temperature of the molded product becomes a set value, and the heater is turned on and off while monitoring the processing temperature of the molded product. Since the molding temperature of the product can be maintained and molding is performed within an appropriate temperature range, the quality of the product can be ensured. In addition, water is automatically sprinkled according to the temperature and the heater is automatically turned on and off, so that the moisture content of the waste put into the extruder can be adjusted without depending on the operator's intuition. Accordingly, the molding conditions can be reliably and easily controlled.

In the present invention, the control for turning on and off the heater while monitoring the molded product temperature sensor can be performed by making a difference between the set temperature of the molded product and the temperature of turning on and off the heater. Accordingly, the usage rate of the heater can be freely changed. For example, when the heater turning-on / off temperature is set higher than the set temperature of the molded product, an operation with a high heater usage rate can be achieved. In the present invention, the nozzle is provided on the die plate, the molded product temperature sensor is provided on the nozzle so as to be in direct or indirect contact with the molded product, and the processing temperature of the molded product is in the range of 100 to 140 ° C. It can also be configured. Thus, the temperature of the molded product can be measured more accurately under the condition that the molded product temperature sensor is in direct contact with the molded product. On the other hand, when the molded product temperature sensor is in indirect contact with the molded product, the molten thermoplastic resin or the molded product after extrusion cannot move and the temperature of the molded product cannot be measured stably. Even when measuring the temperature of the nozzle that forms the outer shape of the molded product, the temperature of the molded product can be measured indirectly, and the temperature of the fixed nozzle is measured instead of the moving molded product. Can measure temperature stably. Here, the reason why the processing temperature of the molded product is in the range of 100 to 140 ° C. is that if the processing temperature is less than 100 ° C., the quality of the molded product is deteriorated, while the processing temperature exceeds 140 ° C. This is because the molded product is not formed, and there is a risk of fire, increasing the danger.

In the present invention, the heater is embedded in a heating plate connected to the die plate, and the heating plate has a temperature sensor. When the temperature of the heating plate measured by the temperature sensor becomes an abnormal temperature, the heater is turned off. . As a result, the die plate with the nozzle can be heated via the heating plate, and when the heating plate reaches an abnormal temperature, the heater can be turned off to prevent overheating of the heating plate. In the present invention, the heater can be turned on and off at a temperature higher than the molding temperature (set temperature of the molded product) . This increases the usage rate of the heater.

The waste extrusion molding equipment for producing a lump-shaped molded product that can be used as a coke raw material according to claims 1 and 2 and the method for producing a molded product using the equipment according to claims 3 and 4 are: Since the molding temperature can be controlled by controlling the amount of water injected and by turning the heater on and off, the processing temperature of the molded product can be maintained, molding can be performed within the appropriate temperature range, and product quality can be ensured. be able to. In addition, watering is automatically performed according to the temperature of the molded product, and the heater is automatically turned on and off, so according to fluctuations in the moisture content, components, etc. of the crushed material to be charged, Moreover, highly responsive control can be performed. Furthermore, the inefficient ratio of converting electrical energy from the screw into thermal energy via a mechanical product (gear, etc.) is reduced, and the electrical energy can be directly and efficiently converted into thermal energy by the heater. Because you can, you can drive economically.

Since the die plate with the nozzle can be heated through the heating plate, only the die plate with the nozzle that needs to be worn and replaced can be replaced regardless of the heater.
The heater usage ratio can be changed freely. For example, if the heater on / off temperature is set higher than the set temperature of the molded product, the heater usage ratio can be set to be higher, so that the operation is more economical. Driving. Further, when the heating plate reaches an abnormal temperature, the heater can be turned off so that the processing temperature of the molded product is not too high, thereby eliminating the risk of ignition.
In the method for manufacturing a molded product according to claim 3, since the processing temperature of the molded product is set in the range of 100 to 140 ° C., the quality of the molded product is not deteriorated and the risk of ignition is eliminated.

In the method for producing a molded product according to claim 4 , since the heater usage rate is increased, the rate of conversion of heat energy by the heater is increased, which is more economical.

Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. FIG. 1 is a schematic explanatory view of a method for producing a molded product in an extrusion molding machine according to an embodiment of the present invention, and FIG. 2 is a configuration of a waste extrusion equipment to which the method for producing the molded product in the extrusion molding machine is applied. FIG. 3 and FIG. 3 are detailed sectional views of the extrusion portion of the extrusion molding machine.
As shown in FIGS. 1 and 2, a waste extrusion molding apparatus 10 to which a manufacturing method of a molded article in an extrusion molding machine according to an embodiment of the present invention applies a crushed plastic-based waste. The coke raw material is cut by the rotary blade 37 by the rotating blade 37, the feed conveyor 11, the fixed quantity feeder 12 disposed below the conveying end of the feed conveyor 11, and having a hopper function. And an extrusion molding machine 14 for producing a molded product 38 before being formed into a massive molded product 13 that can be used. Hereinafter, it will be described in detail with reference to the drawings.

As shown in FIG. 2, the waste mainly composed of plastic that has been separately crushed is transported to a quantitative feeder 12 by a supply conveyor 11. The fixed-quantity feeder 12 includes a hopper 15 having a flat cross-sectional area that is made smaller along the lower side, a screw feeder 16 that is disposed horizontally at the bottom of the hopper 15, and a bridge breaker 17 that is attached to the top of the hopper 15. It has. The bridge breaker 17 is spanned on both side walls inside the hopper 15 in parallel with the axis of the screw feeder 16 and scrapes off the accumulated waste. For example, the bridge breaker 17 is a rotating shaft that rotates at a predetermined speed by a motor. A structure with a plurality of scraping arms attached is used. With this configuration, the waste thrown into the hopper 15 from the supply conveyor 11 is stably transferred by the screw feeder 16 without forming a bridge by the bridge breaker 17, and the extrusion disposed below the metering feeder 12. A certain amount is continuously sent out toward the molding machine 14.

As shown in FIG. 2, an opening 19 through which waste can be thrown is formed in the upper part of the casing 18 of the extrusion molding machine 14, and a pair of screws 21 of a screw feeder 20 are axially centered inside the casing 18. Are parallel to each other. As also shown in detail in FIG. 3, the downstream end of the axial casing 18 of the pair of screws 21 is provided with a heating plate 22 and a die plate 23 connected to the downstream side of the heating plate 22. ing. On the downstream side of the die plate 23, a number of nozzles 25 each having an extrusion port 24 penetrating in the waste flow direction are formed in the circumferential direction around the axis of the pair of screws 21. As an example, the nozzle 25 has a hole diameter of 25 to 50 mm. As shown in detail in FIG. 3, a hole 26 communicating with the extrusion port 24 of the nozzle 25 is formed in the die plate 23. Inside the downstream end of the heating plate 22 and the casing 18, replaceable liners 27 and 28 having wear resistance are provided. As shown in FIG. 2, thermocouples 29 as an example of a molded product temperature sensor are provided in the nozzle 25 at a plurality of locations, and the molding temperature of the molded product 38 can be measured.

As shown in detail in FIG. 3, a plurality of heater elements 31 mainly constituting a heater for heating the die plate 23 are embedded and attached to the heating plate 22 detachably connected to the die plate 23 with bolts or the like. ing. Further, the temperature of the heating plate 22 can be measured by a thermocouple 30 which is an example of a temperature sensor embedded in the heating plate 22. During normal operation, the thermoplastic resin contained in the plastic in the waste put in from the opening 19 of the extrusion molding machine 14 generates frictional heat due to the rotation and compression of the pair of screws 21 and the molding temperature of the molded product 38. It is melted by heating with a heater that is used as needed for control. Further, as shown in FIG. 1, a measured value t of the molding temperature (molded product temperature) of the molded product 38 by the thermocouple 29, and a preset value (preset temperature t for turning on / off the heater) input to the control panel. Compared with _b ), heater on / off control is automatically controlled. That is, when t <t _b , the heater is “ON”, and when t ≧ t _b , the heater is “OFF”. Further, the heating plate 22 is provided with a thermocouple 30 that also functions to prevent overheating. When the heating plate 22 detects an abnormal temperature (the upper limit temperature T _H of the heating plate 22) by the thermocouple 30, The power is controlled to turn off automatically.

As shown in FIG. 2, an ejection nozzle 32 capable of pouring a predetermined amount of water toward the opening 19 is provided above the extrusion molding machine 14. A flow rate adjustment valve 33 that adjusts the amount of water injected from the ejection nozzle 32 and a thermocouple 29 provided in the nozzle 25 are connected to a temperature indicating controller (TIC) 34 via electric wiring. As shown in FIG. 1, the temperature indicating controller 34 has a PID control function, and a measured value t of the molding temperature of the molded product 38 by the thermocouple 29 and a preset value ( The required water injection amount is calculated by comparing with the molding temperature set value t _a ), the flow rate adjusting valve 33 is opened and closed via the water injection amount controller (FIC) 35, and the molding temperature (processing temperature) of the molded product 38 is determined. It is controlled so as to supply the set value (set temperature) becomes t _a such water injection requirements.

As shown in FIG. 2, a rotary blade 37 connected to a motor 36 is provided on the downstream side of the die plate 23 of the extrusion molding machine 14, and a molded product 38 extruded from the nozzle 25 is cut at predetermined lengths. As a result, the molded product 13 is dropped below the rotary blade 37, collected, and conveyed to the next process. With this configuration, the molded product 38 extruded from the nozzle 25 of the extrusion molding machine 14 can be efficiently manufactured into the molded product 13 having a predetermined shape.

Next, a procedure of a method for manufacturing a molded product in the extrusion molding machine according to the embodiment of the present invention to which the waste extrusion molding equipment 10 including the extrusion molding machine 14 is applied will be described with reference to the drawings.
(1) First, as shown in FIGS. 2 and 3, current is passed through a number of heater elements 31 to turn on the heaters, and the die plate 23 is heated via the heating plate 22 and the heating plate 22.
(2) As shown in FIGS. 1 and 2, when the heating plate 22 reaches a predetermined temperature, the screw feeder 16 of the metering feeder 12 rotates at a predetermined speed, and the plastic-based crushed material is transferred to the extrusion molding machine 14. Continuously supplied. The thermoplastic resin contained in the plastic in the supplied crushed material is semi-molten by the supply heat from the heating plate 22 and the die plate 23 and the frictional heat due to the rotation, compression, etc. of the screw 21, and the die plate 23. It is pushed into the hole 26.

(3) As shown in FIG. 1 and FIG. 2, temperature indication adjustment is performed on the crushed material introduced into the screw feeder 20 of the extrusion molding machine 14 so that the molding temperature of the molded product 38 becomes a preset temperature. The automatic addition by the meter 34 controls the addition of moisture from the ejection nozzle 32 and the heater on / off.
(4) The molded product 38 that is controlled to an appropriate molding temperature and is extruded from the nozzle 25 at the tip is cut into a molded product 13 having a predetermined length by the rotary blade 37.
(5) The molded product 13 is sent to the next step in order to perform a process that can be used as a coke raw material.

The control of the processing temperature of the molded product 38 by the automatic control by the temperature indicating controller 34 and the heater on / off control in the step (3) will be described in detail with reference to FIGS. The control panel, below the temperature, that is, keep the input molding temperature of the molded article as a target t _a, the set temperature t _b of the heater on-off, and the maximum temperature T _H of the heating plate 22 in advance. Here, in order to simplify the description, it is assumed that t _a = t _b .

The temperature indicating controller 34 compares the measured value t of the temperature of the molded product 38 measured through the thermocouple 29 with a preset temperature t _a (target molding temperature of the molded product). Te calculates the required injection amount, via the water injection amount adjusting meter 35 is opened and closed the flow control valve 33 by PID control, thereby, it is controlled so that the molding temperature of the molded product 38 becomes the set temperature t _a . At the same time, the measured value t of the molded product 38 is compared with the heater on / off set temperature t _b to perform heater on / off (ON / OFF) control. That is, it is less than the measured value t is set temperature t _b, the heater is always ON cities, whereas, in the measurement value t set temperature t _b or more, the heater is always a switching. In this way, by applying heat with a heater during the molding process, it is possible to automatically produce molded products of a predetermined quality even for crushed materials with a composition that cannot be molded unless the molding temperature is raised, and crushed materials with a high water content. Can be manufactured. Further, not only heat is applied to the crushed material by the frictional heat of the screw 21 and the die plate 23 rotating via the motor and the speed reducer, but also electric energy is directly applied to the crushed material by the heating wire of the heater. High automatic operation is possible. And continuing the ON state of the heater, moreover if the measured value T of the heating plate 22 was measured via a thermocouple 30 is a temperature sensor attached to the heating plate 22 exceeds the upper limit temperature T _H of the heating plate 22, Turn off the heater. The heater, even if the temperature of the molded product 38 does not reach the set temperature t _a, if it exceeds the upper limit temperature T _H, the automatic switching. As a result, the heating plate 22 and the die plate 23 are prevented from becoming abnormally high temperature, and safe operation is possible.

In terms of the above t _b = t _a, but the heater will be repeated ON-OFF as a boundary the molding temperature t _a, when a t _b> t _a, the heater is slightly than the molding temperature t _a Repeated turning on and off at high temperatures. For example, if t _a = 120 ° C. and t _b = 122 ° C., the heater is in the “on” state until the measured value t reaches 122 ° C., and the usage rate of the heater increases. On the other hand, when a t _b <t _a, the heater will be repeated input and off at a temperature lower than the molding temperature t _a, the proportion of the heater is reduced. By performing such control, in the case of crushed materials that tend to have a high amount of moisture, the heater usage rate is increased (operation that emphasizes heating by the heater) to ensure the quality of the molded product and crushing tends to be low in moisture. In the case of a thing, it becomes an economical driving | operation which reduced the usage rate of the heater (operation which emphasized cooling by water injection), and an appropriate driving | operation is attained according to the composition of a crushed material.

In the present embodiment, the thermocouple 29, which is a molded product temperature sensor, is provided in the nozzle 25 so as to be in direct contact with the molded product 38. However, the present invention is not limited to this, and the thermocouple is not directly in contact with the molded product 38. The processing temperature of the molded product 38 can be estimated by indirectly providing the nozzle 25 and correcting the temperature accordingly. Furthermore, although the molding temperature of the molded product 38 has been described as 120 ° C., the present invention is not limited to this. It can also be made into the range of 140 degreeC.

A number of heater elements 31 constituting a heater were embedded in the heating plate 22, and a temperature sensor was provided on the heating plate 22. Further, the heater can be configured by means other than the heater element. Although the PID control is used as the water injection control method for maintaining the treatment temperature at an appropriate temperature, the present invention is not limited to this, and other control methods such as proportional control and PI control can also be applied.

Although the screw feeder 20 is provided with a pair of screws 21, the present invention is not limited to this, and a single screw may be provided. A radiation thermometer is used in place of the thermocouple 30 attached to the heating plate 22 as a temperature sensor for measuring the temperature of the molded product, and the temperature of the molded product 38 coming out from the extrusion port 24 is contactless. It is also possible to configure so as to measure with. It is also possible to use an injection molding machine instead of the extrusion molding machine.

It is a schematic explanatory drawing of the manufacturing method of the molded article in the extrusion molding machine concerning one embodiment of the present invention. It is a block diagram of the extrusion molding equipment of the crushed material which applies the manufacturing method of the molded article in the extrusion molding machine. It is detail sectional drawing of the extrusion part of an extrusion molding machine.

Explanation of symbols

10: Waste extrusion equipment, 11: Feeding conveyor, 12: Metering feeder, 13: Molded product, 14: Extruder, 15: Hopper, 16: Screw feeder, 17: Bridge breaker, 18: Casing, 19 : Opening, 20: Screw feeder, 21: Screw, 22: Heating plate, 23: Die plate, 24: Extrusion port, 25: Nozzle, 26: Hole, 27, 28: Liner, 29: Thermocouple (molded product temperature Sensor), 30: thermocouple (temperature sensor), 31: heater element, 32: jet nozzle, 33: flow rate adjusting valve, 34: temperature indicating controller, 35: water injection amount controller, 36: motor, 37: rotary blade , 38: Molded product

Claims (5)

The crushed plastic-based waste is put into an extrusion molding machine, extruded in a heated state through a nozzle at the front part to form a molded product, and then the molded product is cut to obtain a massive molded product that can be used as a coke raw material. In the manufacturing method,
The extrusion molding machine is provided with a molded product temperature sensor for measuring the molding temperature of the molded product and a heater for heating the waste, so that the measured value by the molded product temperature sensor becomes a set temperature, A predetermined amount of water is automatically injected into the waste that has been added, and the heater is turned on and off while monitoring the temperature sensor of the molded product to maintain the processing temperature of the molded product. A method for producing a molded product in an extrusion molding machine. The method for manufacturing a molded product in the extrusion molding machine according to claim 1, wherein the control for turning on and off the heater while monitoring the molded product temperature sensor is performed by: setting temperature of the molded product and temperature of turning on and off the heater; A method for producing a molded product in an extrusion molding machine, characterized in that the method is performed with a difference between the two. 3. The method of manufacturing a molded product in an extrusion molding machine according to claim 1 or 2, wherein the nozzle is provided on a die plate, and the molded product temperature sensor is in direct or indirect contact with the molded product. Or it is provided in the said die plate provided with the hole connected to the said nozzle, The process temperature of the said molded article exists in the range of 100-140 degreeC, The manufacturing method of the molded article in the extrusion molding machine characterized by the above-mentioned. 4. The method of manufacturing a molded product in an extrusion molding machine according to claim 3, wherein the heater is embedded in a heating plate connected to the die plate, and the heating plate has a temperature sensor, and is measured by the temperature sensor. A method for producing a molded product in an extrusion molding machine, wherein the heater is turned off when the temperature of the heated plate becomes an abnormal temperature. The method for producing a molded product in the extrusion molding machine according to any one of claims 1 to 4, wherein the heater is turned on and off at a temperature higher than the molding temperature. Product manufacturing method.

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