JP2009073042A - Laminated resin molded body, method and apparatus for producing laminated resin molded body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the hardness of a laminated resin molding in which a skin layer and resin foam are laminated different in accordance with a part. <P>SOLUTION: A cavity 20 is formed by a lower mold 12, a first horizontal mold 14, a second horizontal mold 16, and an upper mold 18 which constitute a molding machine 10. An injection machine 22 is installed so that a raw material 28 flows in the extension direction of the cavity 20 in relation to the first horizontal mold 14, and an air blow pipe 30 is set in the second horizontal mold 16. When the raw material 28 is injected from the injection machine 22, a gas such as compressed air is introduced into the cavity 20 through the air blow pipe 30, and the raw material 28 is pushed to the side of the injection machine 22 by the gas. That is, in a part close to the second horizontal mold 16 in the raw material 28 (the resin foam 42), the flow is retarded, so that bubbles 40 grow greatly as compared with a part close to the first horizontal mold 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a laminated resin molded body and an apparatus therefor, in which a laminated resin molded body is obtained by providing a resin foam on one end surface of a resin skin material that has been previously molded into a predetermined shape and disposed in a cavity of a mold. About.

  For example, an automotive instrument panel is composed of a base material layer made of a resin material, an intermediate layer made of a resin foam in which bubbles are dispersed substantially uniformly, and a laminate in which a skin layer made of a resin material is joined together in this order. Has been. This type of laminate is first a laminated resin molded body by laminating an intermediate layer on one end surface of the skin layer, and then the intermediate layer in this laminated resin molded body and a separately prepared base material layer, It is manufactured by being joined while being molded in a vacuum forming machine.

  Here, the laminated resin molded body is produced by providing an intermediate layer on one end surface of the skin layer inserted into the cavity of the molding die in a state of being molded in a predetermined shape (for example, Patent Documents). 1). Specifically, the main agent and the curing agent, which are raw materials for the resin foam, are simultaneously supplied to the cavity in which the skin layer is inserted. The main agent is cured by contacting the curing agent.

  The main agent contains a foaming agent. When the molding die filled with the main agent and the curing agent is heated, foaming occurs under the action of the foaming agent. The intermediate layer is formed by curing the foamed main agent.

  By the way, in an instrument panel or the like of an automobile, it may be desired that a predetermined portion has a higher hardness than another portion, in other words, the hardness varies depending on the portion. As a conventional technique for producing such an instrument panel, a technique described in Patent Document 2 is known.

Japanese Patent No. 3698660 JP-A-1-110913

  In the prior art described in Patent Document 2, polyurethanes with different addition amounts of curing agents are prepared, and walls are provided to avoid mixing them in the cavity. That is, the polyurethane that becomes the high-hardness resin foam is filled in a predetermined compartment, and the polyurethane that takes the low-hardness resin foam is filled in another compartment.

  However, it is not only complicated to prepare a plurality of types of raw materials in this way, but there is also a concern that an operator may mix the raw materials having high hardness with the raw materials having low hardness. In addition, a complicated mold is produced with the provision of the wall, which increases the capital investment.

  The present invention has been made to solve the above-described problems, and provides a method and apparatus for producing a laminated resin molded body capable of efficiently producing a laminated resin molded article having different hardness depending on the part. Objective.

In order to achieve the above-mentioned object, the present invention provides a laminated resin molded body obtained by providing a resin foam on one end face of a resin molded body that has been previously molded into a predetermined shape and disposed in a cavity of a mold. A method for producing a resin molded body, comprising:
While the raw material of the resin foam is supplied by a supply means, the gas is supplied to the cavity from the direction of suppressing the flow of the raw material to press the raw material.

  In this invention, gas is supplied so that the flow of the raw material (for example, main ingredient and hardening | curing agent) of a resin foam may be suppressed, and a raw material is pressed toward the supply means side under the effect | action of this gas. Accordingly, the flow is delayed at a portion of the raw material close to the gas supply means, and the bubbles generated by the foaming grow greatly.

  On the other hand, on the raw material supply means side, the time from when the raw material is introduced into the cavity through the supply means until it is cured is short. Therefore, as described above, the bubbles in the portion close to the gas supply means in the raw material grow large, while the bubbles in the portion close to the raw material supply means still remain small.

  That is, the bubbles in the raw material become smaller from the gas supply means toward the raw material supply means. Since the porosity is large at the site where the bubbles are greatly grown, the stiffness is small and soft. On the other hand, the porosity is small at the site where the bubbles are small, and thus the stiffness is increased and becomes hard. In other words, the portion where the bubbles have grown greatly has a low hardness, and the small portion has a high hardness.

  As can be understood from the above, according to the present invention, an extremely simple operation of supplying gas in a direction to suppress the flow of raw materials is performed. Thus, it is possible to efficiently mold a laminated resin molded body having different hardness. Note that the relationship between the supply pressure and the degree of bubble growth may be obtained in advance by performing various tests on the viscosity, supply pressure, and gas supply pressure of the raw material.

  In this case, the gas supply pressure may be changed (increased or decreased) stepwise or continuously while the cavity is filled with the raw material. When the gas supply pressure is reduced, the pressure of the gas against the raw material is reduced, and the filling of the raw material into the cavity is promoted. On the other hand, when the gas supply pressure is increased, the flow of the raw material is further suppressed, so that the filling rate is reduced, and the raw material is stopped in some cases. By increasing or decreasing the raw material filling speed in this way, the bubbles can be easily controlled to a desired size, and eventually it becomes easy to adjust the laminated resin molded body to a desired hardness. .

The present invention also relates to an apparatus for manufacturing a laminated resin molded body that obtains a laminated resin molded body by providing a resin foam on one end surface of a resin molded body that has been previously molded into a predetermined shape and disposed in a cavity of a mold. There,
Raw material supply means for supplying the raw material of the resin foam;
Gas supply means for supplying gas to the cavity from the direction of suppressing the flow of the raw material while the raw material is being supplied;
Gas pressure changing means for changing the pressure of the gas supplied from the gas supply means;
Control means for commanding the gas pressure changing means to change pressure;
It is characterized by providing.

  By adopting such a configuration, gas is supplied from the direction in which the flow of the raw material of the resin foam is suppressed, and as a result, it is possible to easily obtain a laminated resin molded body having a portion where bubbles generated by foaming have grown greatly. Is possible.

  According to the present invention, the gas is supplied so as to suppress the flow of the raw material of the resin foam to press the raw material, thereby delaying the flow of the portion of the raw material adjacent to the gas supply means, In addition, the bubbles in the part are grown greatly. For this reason, the degree of the growth of bubbles in the resin foam constituting the laminated resin molded body can be made different depending on the part, and eventually the hardness of the laminated resin molded body can be made different depending on the part. it can.

  Hereinafter, a preferred embodiment of the method for producing a laminated resin molded body according to the present invention will be described in detail in relation to a production apparatus for carrying out the method, with reference to the accompanying drawings.

  FIG. 1 is a vertical cross-sectional configuration diagram of a main part of a molding apparatus (manufacturing apparatus) 10 for carrying out the method for manufacturing a laminated resin molded body according to the present embodiment. The molding apparatus 10 includes a lower mold 12, a first horizontal mold 14, a second horizontal mold 16, and an upper mold 18 as molding molds. Each of the molds 12, 14, 16, and 18 has a displacement mechanism (not shown) (for example, , Fluid pressure cylinders, etc.) are attached. That is, the lower mold 12, the first horizontal mold 14, the second horizontal mold 16, and the upper mold 18 can be separated from and approached to each other under the action of the displacement mechanism. On the other hand, the molds are opened when they are separated from each other.

  In this case, the cavity 20 extends in the horizontal direction. The first horizontal mold 14 is provided with an injection machine 22 as a supply means for supplying a main agent and a curing agent as raw materials for the resin foam. That is, a main agent supply pipe 24 for supplying the main agent to the cavity 20 and a hardener supply pipe 26 for supplying a hardener added to the main agent are connected to the injector 22. The main agent and the curing agent are mixed in the injector 22 and supplied as a raw material 28 from the injector 22 to the cavity 20.

  Further, a through hole 29 extending along the extending direction of the cavity 20 is formed in the second horizontal mold 16, and an air supply pipe 30 is inserted into the through hole 29. The leading end of the air supply pipe 30 protrudes from the outside of the side surface of the second horizontal mold 16, and a gas supply pipe 34 is connected via a regulator 32. A valve 36 is interposed in the gas supply pipe 34 connected to a gas supply source (not shown).

  Among these, the regulator 32 is provided with an actuator (not shown) for operating the regulator 32 and an actuator control means (not shown) for controlling the actuator.

  On the other hand, the valve 36 is connected to valve opening degree control means (not shown) for controlling the opening degree of the valve 36 via electrical or optical communication means (not shown). The opening degree of the valve 36 can be changed stepwise or continuously by a command signal of the valve opening degree control means.

  The actuator control means and the valve opening degree control means are provided as a control circuit in the same control panel, and a series of operations of the molding apparatus 10 are controlled by this control panel.

  In the above configuration, a plurality of exhaust passages (not shown) are formed in each of the lower mold 12, the first horizontal mold 14, the second horizontal mold 16, and the upper mold 18. Further, a skin layer 38 made of a resin material and formed into a shape corresponding to the shape of the upper end surface of the lower mold 12 is inserted into the cavity 20.

  The manufacturing method of the laminated resin molded body according to the present embodiment is performed as follows using the molding apparatus 10 configured as described above.

  First, the main agent is supplied from the main agent supply pipe 24 to the injector 22 and the curing agent is supplied from the hardener supply pipe 26. The main agent and the curing agent mixed in the injector 22 are supplied from the injector 22 to the cavity 20 as a raw material 28. In addition, while the raw material 28 is filled in the cavity 20, the air remaining in the cavity 20 is discharged to the outside of the cavity 20 through the exhaust passage as it is pressed by the raw material 28.

  Here, in the present embodiment, immediately after starting the filling of the raw material 28 or after a predetermined amount of the raw material 28 has been introduced, as shown in FIG. Compressed air is introduced into the cavity 20 through the air supply pipe 30. Note that nitrogen, argon, or the like may be introduced instead of compressed air.

  The compressed air is introduced so as to flow in the direction opposite to the flow direction of the raw material 28. For this reason, the raw material 28 is pressed in the direction opposite to the flow direction of the raw material 28 by the compressed air, and as a result, the filling speed of the raw material 28 is reduced from the second horizontal mold 16 side.

  On the other hand, the foaming agent contained in the main agent in the raw material 28 is foamed to generate the bubbles 40, and the main agent begins to cure under the action of the curing agent. Thereby, the change to the resin foam 42 of the raw material 28 is started. This change starts to occur from a portion previously introduced into the cavity 20, that is, a portion adjacent to the second horizontal mold 16.

  As described above, in the present embodiment, compressed air is introduced from the second horizontal mold 16 side. For this reason, in the part close to the 2nd horizontal type | mold 16 in the raw material 28 (resin foam 42), since it is the state pressed by compressed air and the flow was delayed, the bubble 40 grows.

  On the other hand, the portion of the raw material 28 (resin foam 42) close to the first horizontal mold 14 has a short time after being introduced from the injector 22 into the cavity 20. Therefore, when the bubble 40 in the portion adjacent to the second horizontal mold 16 grows large, the bubble 40 in the portion adjacent to the first horizontal mold 14 still remains small. Accordingly, the bubbles 40 become smaller from the second horizontal mold 16 toward the first horizontal mold 14. In other words, the size of the bubbles 40 contained in the raw material 28 (resin foam 42) is different between the second horizontal mold 16 side and the first horizontal mold 14 side.

  In this manner, the raw material 28 is cured while the size of the bubbles 40 is different between the second horizontal mold 16 side and the first horizontal mold 14 side, and changes to the resin foam 42. Accordingly, the bubble 40 in the portion adjacent to the second horizontal mold 16 grows large, while the resin foam 42 in which the bubble 40 in the portion adjacent to the first horizontal mold 14 is small is formed.

  Finally, the cavity 20 is filled with the raw material 28 (resin foam 42). Of course, the resin foam 42 is bonded to the skin layer 38, whereby a laminated resin molded body 44 in which the resin foam 42 (intermediate layer) is laminated on the skin layer 38 is obtained. Thereafter, when the lower mold 12, the first horizontal mold 14, the second horizontal mold 16, and the upper mold 18 are displaced so as to be separated from each other under the action of the displacement mechanism, mold opening is performed, and the laminated resin molded body 44 is exposed. To do.

  In the laminated resin molded body 44, a base material layer is laminated on the resin foam 42 side in a vacuum molding machine, and at the same time, molding is performed together with the base material layer, whereby an end product such as an instrument panel of an automobile is obtained. Is manufactured. In this final product, the side on which the bubbles 40 are greatly grown is soft, and the side on which the bubbles 40 are small is hard. This is because the rigidity is reduced at a portion including the large bubble 40.

  In this way, a gas such as compressed air is introduced from the direction of suppressing the flow of the raw material 28 (resin foam 42) to delay the filling of the raw material 28 into the cavity 20, while the raw material 28 (resin foam) By greatly growing the bubble 40 at the part in contact with the gas in 42), it is possible to easily obtain the laminated resin molded body 44 having different hardness depending on the part.

  In addition, in this case, it is not necessary to perform a complicated operation of preparing a plurality of types of raw materials, and furthermore, it is not necessary to provide a wall portion, so that capital investment does not increase.

  On the other hand, when simply filling without suppressing the flow of the raw material 28, the raw material 28 (resin foam 42) reaches the second horizontal mold 16 in a relatively short time, and the cavity 20 is filled. The raw material 28, which is a mixture of the main agent and the curing agent, starts to cure under the action of the curing agent and finally finishes as the main agent and the curing agent are mixed and a predetermined time elapses. . Therefore, in this case where the filling is completed in a short time as described above, the amount of the raw material 28 filled in the cavity 20 is larger than that in the present embodiment that suppresses the flow. Further, since the time from the completion of filling to the end of curing is longer than that in the present embodiment, the bubble 40 adjacent to the injector 22 side grows greatly. Eventually, the bubbles 40 have substantially the same size throughout the cavity 20.

  The supply pressure of the compressed air may be increased or decreased by operating the regulator 32 via the command signal of the actuator control means while the raw material 28 is being filled into the cavity 20. As a result, the filling speed of the raw material 28 is increased or decreased. That is, when the supply pressure of the compressed air is reduced, the pressing force on the raw material 28 is reduced, so that the filling of the raw material 28 into the cavity 20 is promoted. On the other hand, when the supply pressure of the compressed air is increased, the flow of the raw material 28 is further suppressed, so that the filling speed can be reduced or the raw material 28 can be stopped in some cases.

  Accordingly, the bubble 40 can be controlled to a desired size. That is, by slowing down the filling speed of the raw material 28, the bubbles 40 at the part close to the second horizontal mold 16 can be further grown. Of course, when the raw material 28 is stopped, it is possible to further increase the size of the bubbles 40 on the side close to the second horizontal mold 16.

  This pressure increase / decrease may be performed stepwise or continuously.

  As described above, according to the present embodiment, it is possible to easily and inexpensively manufacture the laminated resin molded body 44 having different hardness depending on the part.

  In addition, as shown in FIG. 4, it may be a molding apparatus 50 in which the raw material 28 branches and flows in different directions starting from the place where the injector 22 is installed. Hereinafter, this embodiment will be described. Components corresponding to those shown in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The molding apparatus 50 includes a lower mold 52, a first horizontal mold 54, a second horizontal mold 56, and an upper mold 58 as molding molds. The molds 52, 54, 56, and 58 are the above molds 12, 14, 16, and 18, respectively. In the same manner, for example, they can be separated and approached by a displacement mechanism such as a fluid pressure cylinder not shown. Of course, the molds are closed when they approach each other to form the cavity 60, while the molds are opened when they are separated from each other.

  From the bottom surface of the upper mold 58 facing the cavity 60, a convex portion 62 is formed to project downward in the vertical direction so as to face the inner walls of the first horizontal mold 54 and the second horizontal mold 56 extending along the vertical direction. ing. Therefore, the cavity 60 formed by closing the mold includes a horizontal portion 64 extending along the horizontal upper end surface 52 a of the lower die 52, and the first horizontal die 54 or the second horizontal die 56 from the horizontal portion 64. A first vertical portion 66 and a second vertical portion 68 rising substantially vertically along each are formed.

  In this case, a step portion 70 is formed on the wall portion of the convex portion 62 facing the second horizontal mold 56, and the step portion 70 contacts the inner wall of the second horizontal mold 56. Since the step portion 70 exists, the vertical dimension of the second vertical portion 68 is shorter than that of the first vertical portion 66.

  The upper die 58 is connected to a main agent supply pipe 24 for supplying the main agent to the horizontal portion 64 of the cavity 60 and a curing agent supply pipe 26 for supplying a curing agent added to the main agent. 22 is installed. That is, in this case, the main agent and the curing agent mixed in the injector 22 are supplied from the injector 22 to the horizontal portion 64 as the raw material 28.

  Further, a through hole 72 is formed in the upper mold 58 from the upper end surface 58 a to the stepped portion 70, and the air supply pipe 30 is inserted into the through hole 72. The distal end portion of the air supply pipe 30 protrudes from the upper end surface 58 a of the upper mold 58, and the gas supply pipe 34 is connected via the regulator 32. A valve 36 is interposed in the gas supply pipe 34 connected to a gas supply source (not shown).

  Similarly to the above, the regulator 32 is provided with an actuator (not shown) for operating the regulator 32 and an actuator control means (not shown) for controlling the actuator.

  On the other hand, the valve 36 is connected to valve opening degree control means (not shown) for controlling the opening degree of the valve 36 via electrical or optical communication means (not shown). Of course, the opening degree of the valve 36 can be changed stepwise or continuously by a command signal of the valve opening degree control means.

  The actuator control means and the valve opening degree control means are provided as a control circuit in the same control panel, and a series of operations of the molding apparatus 50 are controlled by this control panel.

  In the above configuration, a plurality of exhaust passages (not shown) are formed in each of the lower mold 52, the first horizontal mold 54, the second horizontal mold 56, and the upper mold 58. In addition, the skin layer 38 made of a resin material and formed into a shape corresponding to the shape of the end surface 60a facing the cavity 60 in the horizontal portion 64, the first vertical portion 66, and the second vertical portion 68 is inserted into the cavity 60. Has been.

  In the molding apparatus 50 configured as described above, a laminated resin molded body is manufactured as follows. That is, first, the main agent is supplied from the main agent supply pipe 24 and the curing agent is supplied from the curing agent supply pipe 26 to the injector 22. The main agent and the curing agent mixed in the injector 22 are supplied from the injector 22 to the horizontal portion 64 as the raw material 28.

  The supplied main agent and curing agent (raw material 28) branch from the supply point supplied to the horizontal portion 64 via the injector 22 as indicated by arrows in FIG. The remaining raw material 28 flows toward the second vertical portion 68 while flowing toward the first vertical portion 66.

  When the raw material 28 is simply filled, the first vertical portion 66 and the second vertical portion 68 are filled with the raw material 28 against gravity. Therefore, in the first vertical portion 66 having a large vertical dimension, the filling rate of the raw material 28 is smaller than that in the second vertical portion 68. That is, the cavity 60 has a portion where the filling rate of the raw material 28 is high (second vertical portion 68) and a portion where the filling speed is low (first vertical portion 66).

  Although not shown in detail, even when the cavity 60 branches hierarchically, there is a portion having a small filling speed corresponding to the first vertical portion 66.

  In this case, immediately after starting the filling of the raw material 28 or after a predetermined amount of the raw material 28 is introduced, the gas is compressed from the gas supply source to the second vertical portion 68 through the gas supply pipe 34 and the air supply pipe 30. Air is introduced. Note that nitrogen, argon, or the like may be introduced instead of compressed air.

  The raw material 28 that has flowed to the second vertical portion 68 is pressed by compressed air introduced so as to flow in the direction opposite to the flow direction of the raw material 28. For this reason, it is suppressed that the raw material 28 flows into the 2nd vertical part 68, The filling speed | rate reduces.

  Thus, in the raw material 28 pressed from the second vertical portion 68 side to the first vertical portion 66 side, the flow toward the first vertical portion 66 is promoted. Therefore, in the first vertical portion 66, the flow rate of the raw material 28 is significantly increased as compared with the case where compressed air is not introduced from the second vertical portion 68 side. In addition, since the raw material 28 surely wraps around the first vertical portion 66, it becomes easy to fill the first vertical portion 66 with the raw material 28. In other words, the raw material 28 can be efficiently filled in the first vertical portion 66.

  After the first vertical portion 66 is filled with the raw material 28, the valve 36 is closed by the command signal of the valve opening control means to stop the introduction of compressed air. As a result, since the raw material 28 that has entered the second vertical portion 68 is not pressed, the interface of the raw material 28 in the second vertical portion 68 rises rapidly. This is because the filling speed of the raw material 28 in the second vertical portion 68 is increased.

  The supply pressure of the compressed air may be reduced by operating the regulator 32 while the raw material 28 is filled in the first vertical portion 66. In this case, since the pressing force with respect to the raw material 28 becomes small, the filling of the raw material 28 into the second vertical portion 68 is also promoted. That is, the raw material 28 can be efficiently filled into the second vertical portion 68 during the filling of the raw material 28 into the first vertical portion 66. This pressure reduction may be performed stepwise or continuously.

  As described above, when a gas such as compressed air is supplied to the cavity 60 from the direction in which the flow of the raw material 28 from the injector 22 is suppressed and the raw material 28 is pressed, the raw material 28 flows at a portion close to the gas supply means. , And for this reason, the bubbles 40 generated by foaming grow greatly.

  FIG. 5 is an overall schematic perspective view of the laminated resin molded body 80 manufactured as described above. Here, FIG. 5 shows a state in which the polyurethane foam as the resin foam 42 is exposed.

  In FIG. 5, the Asker C hardnesses of the approximately mid-belt portions (so-called core portions) in the thickness direction of the portions indicated by broken circles C <b> 1 to C <b> 4 were 26, 40, 26, and 23, respectively. From this result, it is apparent that according to the present embodiment, it is possible to easily provide portions having different hardnesses in the single laminated resin molded body 80.

  In the above-described embodiments, the cavities 20 and 60 having portions extending in the horizontal direction have been described as examples. However, the shape of the cavities is not particularly limited to this, and may be any shape. There may be.

  In addition, for example, in the case where a molded body having a branch such as a Y-shaped molded body is manufactured and the hardness of each branch branch is all different, supply of a gas such as compressed air to be supplied to the portion having the lowest hardness What is necessary is just to change supply pressure according to hardness, such as making the supply pressure to the site | part which makes the pressure the largest while decreasing the supply pressure to the site | part which makes hardness moderate.

  In this case, the supply pressure of gas such as compressed air supplied to the part where the hardness is desired to be medium and uniform, or the part which tends to be thin due to the low filling speed is minimized while the hardness is minimized. You may make it enlarge supply pressure of gas, such as compressed air supplied with respect to the site | part to do. This increases the supply speed of the raw material 28 to a portion where the hardness is moderate and uniform, or a portion that tends to be thin due to a low filling speed. Since it is satisfied, the hardness can be made moderate and uniform, and the lack of thickness can be avoided.

  In this way, when a gas such as compressed air is supplied to the cavity 20 from the direction in which the flow of the raw material 28 from the injector 22 is suppressed and the raw material 28 is pressed, the direction toward the cavity wall in the raw material 28 in the branched portion. Thus, the time until the curing of the raw material 28 is completed is relatively long. Accordingly, it is understood that the bubbles 40 are relatively large and grow substantially equally throughout the raw material 28 filled in the branched portion.

It is a principal part longitudinal cross-section block diagram of the shaping | molding apparatus for enforcing the manufacturing method of the laminated resin molding which concerns on this Embodiment. FIG. 2 is a vertical cross-sectional view of a main part showing a state in which compressed air is introduced from a second horizontal mold side while filling a resin foam raw material into a cavity of the molding apparatus of FIG. 1. It is a principal part longitudinal cross-section block diagram which shows the state which complete | finished filling of a raw material and formed the laminated resin molding. It is a principal part longitudinal cross-section block diagram of the shaping | molding apparatus which concerns on another embodiment. It is a whole schematic perspective view of the obtained laminated resin molding.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 50 ... Molding device 12, 14, 16, 18, 52, 54, 56, 58 ... Mold 20, 60 ... Cavity 22 ... Injection machine 28 ... Raw material 32 ... Regulator 34 ... Gas supply pipe 38 ... Skin layer 40 ... Air bubbles 42 ... Resin foam 44, 80 ... Laminated resin molded body 62 ... Convex part 64 ... Horizontal part 66 ... First vertical part 68 ... Second vertical part 70 ... Step part

Claims (3)

A method for producing a laminated resin molded body, which is formed in advance into a predetermined shape and obtains a laminated resin molded body by providing a resin foam on one end surface of a resin molded body disposed in a cavity of a mold,
A method for producing a laminated resin molded body, comprising: supplying a gas to the cavity from a direction in which flow of the raw material is suppressed while supplying the raw material of the resin foam by a supply unit.   The manufacturing method according to claim 1, wherein after the gas contacts the raw material, the supply pressure of the gas is changed stepwise or continuously. An apparatus for producing a laminated resin molded body that obtains a laminated resin molded body by providing a resin foam on one end surface of a resin molded body that has been previously molded into a predetermined shape and disposed in a cavity of a mold,
Raw material supply means for supplying the raw material of the resin foam;
Gas supply means for supplying gas to the cavity from the direction of suppressing the flow of the raw material while the raw material is being supplied;
Gas pressure changing means for changing the pressure of the gas supplied from the gas supply means;
Control means for commanding the gas pressure changing means to change pressure;
An apparatus for producing a laminated resin molded body comprising:

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