MXPA00000634A - Method and device for multilayer molding of resin - Google Patents

Abstract

Tgs (where Tsm is the maximum temperature of the resinous decoration layer), and forming a pneumatic heat-insulating layer in a gap formed between the resinous decoration layer and the mold cavity surface facing the decoration layer at an arbitrary time preset within a temperature range wherein the temperature (Tcc) of the core resin material being molded satisfies the relation of Tcc³Tgs. This method ensures a stable supply of multilayer resin moldings of very high quality at a low cost without impairing the surface decoration performance at all.

Description

METHOD FOR MOLDING MULTIPLE LAYERS OF RESIN AND DEVICE FOR MOLDING MULTIPLE LAYERS TECHNICAL FIELD The present invention relates to a method for molding multiple layers of resin and with a device for molding multiple layers, in which a film material - having a layer of decorative resin on a surface and a resin of core material they are molded integrally in a mold.

Prior Art Recently, for resin molded products for use in automobiles, home appliances, building materials and the like, to improve surface decorative quality by applying added values such as decorative properties, good feel, cushioning, and the like and To reduce costs saving molding processes, the molding of multiple layers of resin has been developed in which a decorative film material has the function of decorating surfaces, such as decorative properties, good touch feeling, cushioning and the like, it is integrally formed on a surface of a core or core resin using injection molding or press molding as described below, in a mold simultaneously with the molding of the core resin. After the decorative film material is placed between the pieces of the open mold, in a fixed state in which a clamping force is exerted by closing the mold or in a fixed state in which a certain specific mold opening is maintained between the parts of the mold, a space of the mold cavity formed by the decorative film material and the mold is filled with a core material or molten resin by an injection device, a resin supply unit or the like. After filling the resin of the core material, the mold is loaded with a filling pressure with the injection device or the clamping device to integrally mold the decorative film material and the resin of the core material, and the mold is opened after a predetermined cooling time has elapsed to remove the molded product therefrom. However, the decorative film material is damaged to a large extent due to the high temperature and pressure loading by the resin of the core material when the mold is filled with the core material or when the mold still with the molten resin is Open to remove the molded product. One problem that is caused is that even when using a decorative film material with a layer of foam laminated on its back surface, in, for example, the softness and cushioning properties, the foam layer collapses during molding, and the properties of softness, cushioning or other expected decorative surface functions can not be obtained. Another problem that is caused even when the decorative film material used is provided with a carded layer on its surface mainly for, for example, the good feeling to the touch and high graduation, the carded layer fails during the molding, and the good feeling to the Touch, and greater graduation, and other expected surface decorative functions can not be obtained. An additional problem that is caused even when use the decorative film material with a printed or painted layer laminated on its surface mainly for, for example, the decorative or painting properties, microfine cracks made in the manufacturing process of microfine film or stretch material made to the surface can not be avoided. moment of deformation along the • mold configuration during molding, which results in surface defects such as stains, discolorations, and the like. Decorative and painting properties, or other superficial decorative functions expected can not be obtained.

As mentioned earlier, even when decorative film material is used for the purposes of increasing added values such as decorative, feel, feel, cushioning and the like properties, the original objective surface decorative performance can be obtained. Means for solving the aforementioned problems include a method, in which a decorative film material is used with a film having heat / pressure resistance or another protective layer laminated thereon. The method is designed to moderate the influences of the heat and pressure loads of the resin of the core material during molding with the protective layer, but the cost of manufacturing the decorative film material is increased, the decorative film material is only incompletely protected, and the objective surface decorative operation can not be satisfied. As other means to solve the aforementioned problem, in the case where the printed or painted layer is laminated on the surface of the decorative film material, mainly for decorative and painting properties, the decorative film material is plotted / preformed in the configuration of a product molded at high temperature before molding. In this method, in the high-temperature pre-forming process, microfine cracks made in the process of manufacturing the film material or microfine stretches made at the time of deformation along the mold configuration during molding can be avoided in some degree, but not incompletely. In addition, since the pre-forming process is added and a separate pre-forming installation is necessary, the costs of molding multiple layers of resin and space to effect molding are increased. As new means to solve problems mentioned above, the Japanese Patent Application Laid-open No., 150740/1984 proposes a method of low molding ^ pressure in which the pressure charged to the decorative film material is minimized during the molding of multiple layers of resin using the press molding. Further, for example, Japanese Laid-open Patent Application No. 297489/1994 proposes a molding method in which the temperature of the molten resin of the core material is lowered, the pressure loaded on the decorative film material is reduced and the product of the pressure loaded on the decorative film material during the hours of • molding and operation are further reduced. Both proposals are designed to suppress the damage of the decorative film material that is being molded by reducing the influences of the pressure and heat loaded on the decorative film material.

However, even if the damage of the decorative film material can not be suppressed by reducing the pressure loaded on the decorative film material or by reducing the product of pressure and time, there is a minimum, moldable, necessary pressure to mold the resin of the decorative film material. core material. Consequently, a reduction of the molding pressure of the resin of the core material causes deformation, warping, short molding cycles, or other molding defects in view of the products. 10 Furthermore, in the method in which the temperature of the molten resin in the core material is lowered, ^ that the resin fluidity of the core material decreases too much, the pressure at the time of resin molding the core material decreases too much, the pressure at the At the time of molding the molten resin from the core material (filling and flow pressures) it inevitably increases, and the pressure loaded on the decorative film material does not fall. As a result, the molding method is a contradictory proposal (really not valid). Even if the method could be done, the decrease in • resin molding pressure of the core material causes deformation, warping, short molding cycles, or other molding defects in view of the products. To effect the molding by reducing the minimum It is certainly desirable to control the damage of the decorative film material during molding, but this is a molding condition in which the molding can not be carried out in view of the molding ability of the resin of the material. of the nucleus. Specifically, in the molding of multiple layers of resin using the decorative film material, contradictory molding controls have to be carried out simultaneously to prevent the decorative film material from being damaged and to increase the molding capacity of the resin of the core material. during molding. Not only in the case where molding is used • injection molding and conventional pressing molding, but also in molding control using simply the proposed low pressure molding, the molding can not be done with both controls being compatible. Therefore, an object of the present invention is to provide a method for molding multiple layers of resin and a device for molding multiple layers, which can solve the conventional problems described above. Another object of the present invention is to provide a method for molding multiple layers of resin and a device for molding multiple layers, which can provide highly stable, stable, low cost resin multilayer resin products at low cost. Without damaging the surface decorative performance.

Description of the Invention According to the present invention there is provided a method for molding multiple layers of resin in which a film material having a decorative layer of resin on a surface and a resin of core material are integrally molded in a mold , comprising the steps of: establishing a ratio of a vitreous transition point (Tgs) of the decorative resin layer of the film material and the supply temperature (Tc) of the molten resin forming all the core material to satisfy Tgs <Tc, and effecting the molding with the proviso that the maximum temperature (Tsm) of the decorative resin layer of the film material during molding satisfies Tsm > Tgs; and within a temperature range in which a temperature (Tcc) of the resin of the core material during molding satisfies Tcc > Tgs at a prearranged arbitrary time, making a space between the decorative resin layers of the film material and one face of the molding cavity opposite the decorative resin layer to form and retain an air insulating layer. In the present invention it is further preferable that within a temperature range in which the temperature (Tcc) of the resin of the core material during molding satisfies Tcc > Tsm and Tcc > Tgs at a prearranged arbitrary time, a gap is formed between the decorative resin layer of the film material and the molding cavity facing away from the decorative resin layer to form and retain an air insulating layer. Further, in the present invention, after the insulating layer is formed, within a temperature range in which the temperature (Tsc) of the decorative layer of resin of the film material satisfies Tcc > Tgs in a prearranged arbitrary time, the mold is closed to eliminate the insulating layer of retained air. In addition, according to the present invention, a method for molding multiple layers of resin is provided in which a film material having a decorative resin layer on a surface and a resin of the core material is integrally molded in a mold, comprising the steps of: at a prearranged arbitrary time then a molten resin is supplied which forms a core material, using heating means incorporated within the mold or heating means attached outside the mold, and heating the decorative resin layer of the film material to a glass transition point (Tgs) or a Higher temperature and subsequently making a gap between the decorative resin layer of the film material and one face of the molding cavity opposite the decorative resin layer to form an air-insulating layer, or forming an air-insulating layer and subsequently heating the layer Decorative resin film material to Tgs or a • higher temperature, or simultaneously heating and forming the insulating layer of air, to retain the insulating layer of air. In the method for molding multiple layers, after the air-insulating layer is formed, within a temperature range at which a temperature (Tsc) of the decorative resin layer of the film material ^^ satisfies Tsc = Tgs at a prearranged arbitrary time, the mold preferably closes to remove the insulating and retained air layer. In addition, in the case where injection molding is used as the molding method, after being made by the operator the molding and the visual quality determination for an injection filling condition to fill by injection the molten resin that forms the core material in a space of the cavity of the • mold and fill a countable amount by cooling / thermosetting, a clamping condition determined by injection, the thickness of the air insulating layer, a synchronization condition of change to form The air insulating layer, and a change synchronization condition to remove the insulating air layer are initially set as the molding conditions. In a case where the molding conditions need to be changed based on the results of the visual determination of the quality, the molding conditions are preferably corrected using a correction program prepared to set the optimum molding conditions to prevent the decorative layer resin of the film material being molded is damaged. Further, the present invention, after the operator has performed the test molding, the visual determination of the quality of the injection-filled condition to fill by injection the molten resin which forms the core material the space of the cavity of the mold and fill the shrinkage amount by cooling / thermosetting, the clamping condition during injection filling, the thickness of the air insulating layer, the synchronization of the change to form the air insulating layer, the synchronization of the change to remove the layer air insulation, and a heating condition for using heating means for heating the decorative resin layer of the film material are initially set as the molding conditions. In a case where the molding conditions need to be changed based on the results of the visual determination of the quality, the molding conditions are preferably corrected using a correction program prepared to set the optimum molding conditions to prevent the decorative layer Resin of the film material being molded will be damaged. Further, in the present invention, it is preferable that it is preferable that it is minimum thickness (Lm) of the decorative resin layer of the film material being molded, a thickness (Lf) of the decorative resin layer after the molding which satisfies that the required decorative performance of a molded product of multiple layers ^^ and a thickness of the insulating layer of air have a ratio Lf-Lm < The > 0. In addition, the present invention, the material of The film is preferably a sheet of a decorative resin layer which is formed by laminating a portion of decorative surface layer consisting of a resin film, a resin-woven fabric, a non-woven resin fabric, and a woven or non-woven fabric. with resin relief only or in ^^ a combined form and a portion of intermediate decorative layer consisting of a foamed resin or a supporting surface of the portion of the decorative surface layer as necessary according to a decorative surface purpose, and a base layer consisting of a resin film, a woven resin fabric or a non-woven resin fabric or a combination thereof, as required. Additionally, it is preferable that the resin temperature of the core material and the temperature of the decorative resin layer of the film material during the process are detected, at the same time as the synchronization of the change to form the air insulating layer and the Change synchronization to eliminate the insulating layer of air are controlled with a detected temperature signal. In addition, control of the timing of the change ^^ to form the air insulating layer and control the synchronization of the change to remove the insulating layer of air are preferably carried out with a delay signal of a timer, which starts at an arbitrary time during molding. In addition, still, the correction program is preferably provided with a function to select a point that is required to be corrected from the values of the molding conditions initially set on the basis of • the correction address present and the quantity corresponding to an item of defective quality and a defective quality grade obtained by the results of the visual determination of the quality of the operator; a function to correct the fixed value of the selected fixed point; and a function for issuing an operation command to change supplementary molding conditions consisting of a mold temperature, a resin temperature of the core material and the like, when the corrected fixed values reach a pre-set critical correction value. In the present invention, the mold is preferably used with an insulating cavity layer formed from the face of the mold cavity opposite the decorative resin layer 10 of the film material. The . present invention also provides a ^^ device for molding multiple layers of resin in which a film material having a decorative layer of resin on a surface and a resin of material of The core is molded integrally in a mold, comprising: support means for supporting and fixing the film material in a predetermined position of the mold cavity and supporting a molded product in a predetermined position after molding, and means of delivery. 0 to supply a molten resin that forms a core material in the space of the mold cavity; and a section that fixes the clamping condition to fix / introduce a clamping condition and a thickness of an air insulating layer during the supply and after the supply of the molten resin, a section for fixing the synchronization of the change for a synchronization condition to form the air insulating layer and a change synchronization condition for removing the air insulating layer, a temperature detection section for detecting a resin temperature of the core material and a temperature of the decorative resin layer of the film material during molding, a comparison control section for comparing / determining a detection signal of the temperature detection section and a fixed value of the fixing section of the change synchronization, and one. clamping control section to control ^^ the clamping means based on a signal of the comparison control section and a fixed value of the fixing section of the clamping condition. In addition, the present invention provides a device for molding multiple layers of resin in which a film material having a decorative layer of resin on the surface and a resin of material of the core are integrally molded in a mold, comprising: support means for supporting / fixing the film material in a predetermined position of the cavity of a mold and supporting a molded product in a predetermined position after molding, and supply means for supplying a molten resin forming a material of core in a space of the mold cavity; and a fastening condition fixing section for fixing / introducing a clamping condition and a thickness of an air insulating layer during the supply and after the supply of the molded resin, a fixing section of the heating temperature condition for setting a temperature at which the decorative resin layer of the film material is heated, a section for detecting the heating temperature for detecting the heating temperature of the decorative resin layer of the film material 10, heating means for warm the decorative layer of. resin of the film material based on a fixed value of the fixing section of the heating temperature condition and a detection signal of the heating temperature detecting section, and a clamping control section for controlling the clamping means based on a fixed value of the fixing section of the clamping condition. The aforementioned multi-layer molding device preferably uses a & amp; injection molding device. The device for molding multiple layers using a molding injection device preferably includes an initial fixed entry section for initially setting / entering values of the conditions of molding an injection-filled condition to fill by injection the molten resin that forms the core material in the space of the mold cavity and fill a shrinkage amount by cooling / thermosetting, a clamping condition during injection filling a thickness of the air insulating layer, a change synchronization condition for forming the air insulating layer and a change synchronization condition for removing the air insulating layer; a control section of the molding device for operating / controlling the device for molding 10 multiple layers to effect the molding of multiple layers of resin in bas.e at fixed values of the inlet section of ^^ initial fixation; an input section for quality determination to enter the results of the visual determination of the quality; and a storage section of the correction program for storing a correction program to correct the values of the initially set molding conditions based on the values entered from the input section of the quality determination to set the optimum molding conditions for ^ Or prevent the decorative resin layer of the film material being molded from being damaged. In addition, the device for molding multiple layers preferably includes an initial setting input section for initially setting / entering as values of the conditions of the molding an injection-filled condition for filling by injection the molten resin which forms the core material in the space of the mold cavity and filling a shrinkable quantity with cooling / thermosetting, a clamping condition during filling by injection, a thickness of the air-insulating layer, a condition of synchronization of the change to form the air-insulating layer, a condition of synchronization of the change to remove the insulating layer of air, and a heating condition for heating the decorative layer of air. resin of the film material using heating means; a control section of the molding device for operating / controlling the device for molding multiple layers to effect the molding of multiple layers of resin based on fixed values of the initial setting input section; an input section for quality determination to enter the results of the visual determination of the quality; and a storage section of the correction program for storing a correction program to correct the values of the molding conditions initially set on the basis of the values entered from the input section of the quality determination to set the optimum molding conditions for preventing the decorative resin layer of the film material being used from being damaged.

In addition, the device for molding multiple layers preferably includes a timer which starts at an arbitrary time during molding, and a timing setting section of the change is preferably incorporated into the mold to set the condition of the timing point of the change for forming the air insulating layer and timing condition of the change to remove the air insulating layer in response to a delay signal from the timer, and means for forming the air insulating layer. Additionally, preferably a layer in the insulating cavity is formed on a cavity oriented opposite the decorative resin layer of the film material. Further, in the present invention, a conventional known method such as the molding method can be applied, and injection molding, pressure molding, blow molding, vacuum molding and other different molding methods can be used. Among the methods, injection molding and press molding are preferable.

Brief Description of the Drawings Figure 1 is a block diagram of the entire constitution of an injection molding machine of the direct pressure clamping system.

Figure 2 is a block diagram of the entire constitution of an injection molding machine according to another embodiment of the present invention. Figure 3 is a block diagram of the entire constitution of an injection molding machine according to an embodiment of the present invention. Figure 4 is an explanatory view showing the shape of the insulating layer of air in the mold to effect the molding of multiple layers. Figure 5 is a vertical sectional view showing that the mold cavity opposite a resin layer of a film material has an insulating cavity structure. Figure 6 is an explanatory view showing the heating state by the heating means that are incorporated within the mold according to the present invention. Figure 7 is an explanatory view showing the heating state of the heating means outside the mold according to the embodiment of the present invention. Figure 8 is a flow diagram for effecting the molding of a first embodiment using a resin molding device shown in Figures 1 and 2. Figure 9 is a flow diagram for effecting the molding of a third embodiment using the device of resin molding shown in Figure 1.

Figure 10 is a flow diagram for effecting the molding of a fourth embodiment using the resin molding device shown in Figure 2. Figure 11 is a flow diagram for effecting the molding of a fifth embodiment using a molding device of resin shown in Figure 2. Figure 12 is a flow diagram for effecting the molding of a sixth embodiment using the resin molding device shown in Figure 3. Figure 13 is a flow chart for effecting the molding a seventh embodiment using a resin molding device shown in Figure 3. Figure 14 is a flow diagram for effecting the molding of an eighth embodiment using a device of resin molding shown in Figure 1.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail. For convenience of the description, the invention gK) will be described based on a case where injection molding was used as a molding method. When the injection filling of a molten resin that forms a core material begins, a decorative layer of resin in a film material is heated simultaneously by the amount of heat of the molten resin of the core material. Here, since the vitreous transition point Tgs of the decorative resin layer of the film method and the supply temperature Tc of the molten resin of the core material are present to have a ratio of Tgs <Tc, the heating continues until the maximum temperature Tsm of the decorative resin layer of the film material satisfies Tsm > Tgs. Subsequently, after the integration of the film material and the resin of the core material and the molding of the resin of the core material are substantially complete, in a temperature range in which the temperature Tcc of the resin of the core material is being molded satisfies Tcc = Tgs at an arbitrary present time, a space is formed between the decorative resin layer of the film material and one face of the mold cavity opposite the decorative resin layers to form an air insulating layer, and this state is retained for a predetermined period of time. As mentioned above, in the condition of temperature which satisfies Tcc = Tgs, the decorative resin layer of the film material is a temperature region in which elasticity similar to that of rubber is exhibited, and the decorative resin layer of the Film material damaged by external forces (influences of heat and pressure) during molding can be restored to itself by means of an elastic force. In addition, by making a gap between the decorative resin layer of the resin material and the face of the opposite mold cavity the decorative resin layer, the space will give the restoration space of the decorative resin layer of the film material. Additionally, since the insulating layer of air is formed, the synergistic effect of the elongation with time of the temperature region in which elasticity similar to that of rubber is indicated, ie the lengthening of time to allow restoration), it allows the decorative resin layer of the film material to be restored to itself, so that a molded product of multiple layers of resin can be obtained without being damaged even after molding. As a result, contradictory mold controls can be achieved simultaneously for the resin molding of the core material and for the prevention of damage of the decorative film material in a series of molding processes, and a stable supply of molded layers can be obtained. Multiple high-quality resin without deteriorating the objective surface decorative performance. Furthermore, in the case where within the temperature range at which the temperature Tcc of the resin of the core material being molded satisfies Tcc = Tsm and Tcc = Tgs at the present arbitrary time, a space is produced between the decorative resin layer of the film material and the face of the mold cavity opposite the decorative resin layer to form and retain for a predetermined time the air-insulating layer, since the restoration capacity of the decorative resin layer of the film material can further improved, remarkable high quality resin multi-layer molded products can be obtained without deteriorating the original decorative performance of the decorative resin layer of the film material. Further, in the case where after forming the air insulating layer, the mold is closed again within the temperature range in which the temperature Tsc of the decorative resin layer of film material Tsc = Tgs at the present time, then of facing the transfer of the face of the mold cavity in a state of temperature of Tgs or more in which the decorative resin layer of the film material exhibits elasticity similar to that of the rubber, the cooling / thermosetting is carried out with the state of transfer of the face being maintained. In this case, for example, in the combination of the film material having the decorative resin layer of a printed or painted resin film and the mold having the face of its cavity finished specularly, the cracks generated in the manufacturing process of the Film material or surface defects such as stretches generated in the deformation process during molding, and the like can be completely removed, so that a multi-layered resin product having high surface gloss without any discoloration can be obtained. Also, for For example, in the combination with the mold having the face of its stamped cavity, the pattern stamped on the face of the cavity can be transferred exactly to the decorative resin layer of the film material. Therefore, a molded multi-layered resin product which is stamped uniformly over all its surface can be obtained. ^^ surface and has no changes to the patterned pattern even in the portion of its corners, compared to the molded product obtained with the multi-layer molding method that uses the film material to which a patterned pattern was applied beforehand. Additionally, in a case where the decorative resin layer of the film material is forced to be heated to the vitreous transition point Tgs or a higher temperature ^) Using the heating means, while forming the air-insulating layer, after the integration of the film material and the resin of the core material and the molding of the pressure of the core material are completely concluded, the process of heating and the formation of the air insulating layer. Therefore, the molding ability of the resin of the core material can be further improved, and the self-restoration of the decorative resin layer of the film material can be achieved. In this case, even in the molding conditions in which the temperature condition satisfies the ratio of Tcc = Tsm and Tcc = Tgs between the temperature Tcc of the resin of the core material and the maximum temperature Tsm of the decorative resin layer of the film material during molding can not be fixed, a molded product 10 of multiple layers of high quality resin can be obtained without deteriorating the objective decorative surface operation. a ^. Further, in the case where after the decorative resin layer of the film material is heated to Tgs or greater by the heating means and the air insulating layer, the mold is again closed within the temperature range in which the temperature Tsc of the decorative resin layer of the film material satisfies Tsc = Tgs at the present time, and a molded product of multiple layers can be obtained of resin that has high ^ surface gloss without any discoloration or a molded product of multiple layers of resin having its entire surface uniformly stamped. In addition, in the method for molding multiple layers of resin described above, but also using a The mold having one face of the insulating cavity on the cavity of the face mold opposite to the decorative resin layer of the film material, the effect of the lengthening of the time of the temperature region in which the decorative resin layer of the Film material exhibits elasticity similar to that of rubber at the time of formation of the air-insulating layer (ie, lengthening the time to allow restoration) can be further promoted. Especially, in the molding method in which the mold is closed again after the air-insulating layer is formed, since the drop in temperature dp- the decorative resin layer of the material of ^^ film by the face of the insulating cavity can be prevented, the quality of the molded product can improve significantly and effectively. In addition, in the method for molding multiple layers of resin described above, initially setting the substantial molding conditions necessary for the molding and introducing the result of quality determination after the test molding, the fixed value to be corrected ^ ß can be selected from initial fixed values present according to the quality determination results entered, and the amount and direction of the correction can be corrected automatically by means of the correction program so that a product can be obtained molded of good quality. Thus, even an operator with little experience can easily fix the optimal molding conditions, there is no dispersion in the quality of the molded product by the difference of skill of the operator, and the improvement of productivity or other effects can be obtained by automating the optimal molding conditions fixing and reducing the conditioning time. As a result, products can be stably supplied. molding of multiple layers of high quality resin, remarkably, without impairing the performance decorative surface objective, and costs can be reduced by increasing productivity. ^^ Furthermore, in addition to the method for molding multiple layers of resin described above, the present invention provides a device for molding layers multiple resin which can perform the previous molding method. Therefore, for any film material in which a decorative resin layer formed by laminating a portion of the decorative resin layer consisting of a resin film, a resin-woven fabric, a non-woven fabric of resin and A fabric • woven or non-woven in relief, in resin, alone or in combination and a portion of intermediate decorative layer consisting of a foamed resin or a support surface of the portion of the decorative layer surface as needed, according to the surface decorative purpose, and a base layer consisting of a resin film, a woven resin fabric or a non-woven resin fabric or a combination thereof as needed are laminated, can simultaneously achieving contradictory molding controls for molding the resin of the core material to prevent the decorative film material from being damaged in a series of molding processes. The stable supply of layered molded products multiple of remarkable high quality resin can be obtained without deteriorating the surface decorative performance ^^ objective. The present invention will be described in detail based on the modalities shown in the accompanying drawings.

Figure 1 is a block diagram showing an entire injection molding device of the direct pressure clamping type and, as shown in Figure 1, a device for molding multiple layers of resin 100 of the present invention utilizes a injection molding machine for general purposes and consists of a • mold device 10, a clamping device 20, an injection device 30 and a control device 60. The mold device 10 is constituted by a fixed mold 3 attached to a fixed board 1 and a mobile mold 4 attached to a mobile board 2, and the mobile board 2, and the mobile board 4 can be advanced or retracted by a clamping cylinder 22 of the clamping device 20. The clamping device 20 is provided with a clamping cylinder 22 for opening or closing the mold 3 and 4 of the mold device 10, and the movable mold 4 can be guided by some tension (not shown) and be advanced and retracted in relation to the fixed mold 3. In the injection device 30, a screw 34 provided with a spirally attached screw slat 36 it can rotate and advance or retract freely in a barrel 32. When the screw 34 is operated by a hydraulic motor 42 for turning, the resin granules supplied to a hopper 38 are fed to the front of the screw 34. During this operation, the resin granules are heated by a heater (not shown) attached to an outer peripheral face of the barrel 32 while melting under the kneading action of the rotating screw. orio The molten resin fed to the front of the screw 34 is pushed outward towards a nozzle 39 by the screw 34 operated by an injection cylinder 40 to advance, and be injected into the mold cavity 5 formed between the molds 3 and 4 Next, the control device 60 will be described. As shown schematically in FIG. 1, the control device 60 is constituted by an injection controller 62, a holding controller 64, a controller of the molding device. 66, a fixing condition fixing section 68, a position sensor 70, a change synchronization setting section 72, a comparison controller 74, a temperature sensor 76 and a timer 78. The injection cylinder 40 and the forward / reverse hydraulic motor 42 are controlled by a hydraulic control valve 52 that receives an operating command from the injection controller 62 to advance and rotate the screw. The controller of the molding device 66 connected to the injection controller 62 is also connected to the holding controller 64. The temperature information of a resin of the core material Q measured by a temperature sensor 8 is connected to the comparison controller 74 via the temperature detector 76. In addition, the comparison controller 74 is connected to the holding controller 64 and also to the adjustment section of the shift synchronization 72 and the timer 78. Additionally, to obtain temperature information of a decorative resin layer of a film material S , the temperature sensor 8 is also attached on the side of the decorative resin layer.

The information measured by the position sensor 70 attached to the moving board 2 is connected via the holding controller 64 to give an operation order to the driver of the molding device 66, and also connected to the fixing section of the holding condition 68. In addition, the clamping controller 64 transmits a signal to the clamping cylinder 22 of the clamping device 20 via a hydraulic control valve 82. Additionally, the number 50 denotes a hydraulic supply on one side of the injection circuit, and the 80 denotes a hydraulic supply on one side of the clamping circuit. In addition, in the embodiment shown in Figure 1, the injection molding machine including the direct pressure type clamping device is used, although an injection molding machine including a clamping device of the type of injection can be used. Oscillating condition, a vertical injection molding machine or an injection molding machine including an electromotive clamping device.

[First Mode] A molding method for a first embodiment shown in Figure 8 using the device for molding multiple layers of resin of Figure 1 will be described.

The combination of the film material S and the core material Q is present in such a way that the glass transition point Tgs of the decorative resin layer of the film material S and the supply temperature Tc of resin molded in the core material Q have a relation of Tgs < Tc. The film material S satisfies the objective decorative decorative operation, and is constituted by laminating a decorative layer of resin which is form by laminating a portion of decorative resin layer constituted of a resin film, a woven fabric of ^ resin, a non-woven fabric of resin, and a woven or non-woven fabric in resin relief alone or in combination and a portion of intermediate decorative layer consisting of a foamed resin on the supporting surface of the surface decorative layer portion as necessary in accordance with the decorative surface purpose, and a base layer consisting of a resin film, a woven resin fabric or a non-woven resin fabric or a combination of? or the same as necessary. For the resin of the core material Q, a resin material is selected that satisfies the mechanical properties required for a molded product, for example, when a polypropylene resin is used (PP) as the resin of the core material, Q and the film material S is decorated using a polyethylene terephthalate (PET) resin as the decorative resin layer, the supply temperature Tc of the PP resin is molded from approximately 200 to 230 ° C, while the Tg of the PET resin of approximately 70 ° C. Therefore, sufficient Tgs < Tc. The film material S is fixed at a predetermined position within the mold cavity 5 using a section of the carrier device as the carrier means (not shown) using, for example, bolt-on, spring-loaded, vacuum suction or other means. The supplied film material S has a configuration selected from a configuration cut in sheet form to laminate configuration of a delineated product 5, to be fed like this, and a configuration preliminarily molded according to a product configuration. After fixing the film material S, the hydraulic control valve 82 is controlled by the clamping controller 64 on the basis of the initial clamping condition O fixed / introduced in advance in the clamping condition fixing section 68 to effect Initial support For the initial fixed state, for example, in the case of the film material S including the decorative resin layer formed by the portion of the decorative surface layer 5 consisting of a resin film, a resin-woven fabric, a non-woven resin fabric, and a relief-woven fabric and a non-woven resin fabric alone or in combination, the molds 3 and 4 are in a fully fixed state in which the molds are loaded with a full clamping / clamping force, or in a fixed state at low pressure in which the molds are loaded with a relatively small clamping force and allowed to open slightly by means of the resin pressure of the core material Q when the molds are filled with the resin of the core material Q injected. Furthermore, for example, in the case of the film material S which is formed by laminating the portion of the decoratively formed layer of a foamed resin on the support surface of the portion of the decorative layer Surface, at the time of filling by injection of the resin of the material of the core Q, prevents the molten resin injected from coming into direct contact with the foamed resin or melting / loosening the foamed resin. For this purpose, the molds are placed in an initial fixed state in which the molds are kept open so that they have a space of such a degree that the molten resin injected does not come into direct contact with the foamed resin. Additionally, the initial fixed state is selected from the state of retention of the open mold, the fully fixed state and the fixed state at low pressure according to a mold gate structure (direct gate or side gate). In the initial fixed state, the molten resin that forms the molten resin of the core material Q is injected / filled into the space formed by the film material S and the mold cavity 5. Subsequently, for the purpose of compensating for a shrinkage by cooling / thermosetting the molten resin, clamping or filling the resin of the Q core material continues as required. Additionally, during the process of filling by injection or the pressing / filling process of the resin of the core material Q, the initial fixed state can continue. If necessary, the clamping force or the retention amount of the open mold can be controlled in multiple stages based on the control condition of the pre-set multiple clamping pattern or clamping section of the clamping condition 68. As an alternative By injecting / filling the amount of resin with the amount contracted by cooling / thermosetting the resin added to it in the injection-filling process, the pressure retention can be carried out on the clamping side by the multi-step control of the subjection.

Simultaneously with the injection filling and the pressure retention / filling of the resin of the core material Q, the temperature Tcc of the resin of the core material Q and the temperature Tsc of the decorative resin layer of the film material S are detected by the temperature sensor 76. The decorative resin layer of the film material S is heated by the amount of heat of the resin of the material of the core Q. Here, in the condition of temperature at which the maximum temperature Tsm of the layer The decorative resin of the film material S being molded is equal to or less than the vitreous transition point Tgs (Tsm = Tgs), the decorative layer of damaged resin being molded can not be restored using the capacity of self-restoration by medium of the rubber-like elasticity described below. In this case, for example, the resin supply temperature of the core material Q rises further, the temperature of the mold rises, the material of the decorative resin layer of the film material S changes, or the other Molding conditions need to be checked. Therefore, the molding condition of Tsm > Tgs is a prerequisite. Additionally, if the molding condition of Tsm > Tgs is confirmed in advance, the temperature sensor 8 fixed to the film material on the side of the decorative resin layer is unnecessary.

The integration of the film material S and the resin of the material of the core Q and the cooling / thermosetting of the resin of the material of the core Q is carried out a cooling retention process, and the controller is compared 74 detects the signal of the temperature detector 76 coincides with the condition of synchronization of the preset change in a temperature range which satisfies Tcc = Tgs for the section that fixes the timing of the change 72. Subsequently, the clamping controller 64 operates the hydraulic control valve 82 to effect the operation of the mold opening in such a way that a space is formed between the decorative resin layer of the film material S and the mold cavity of the face opposite the decorative resin layer. Specifically, in the condition of temperature that satisfies Tcc = Tgs, the decorative resin layer of the film material S is reheated due to the amount of heat of the resin of the core material Q in a region of temperature at which the elasticity Similar to rubber Tgs or more is indicated. Therefore, the decorative resin layer of the film material S damaged by external force (influence of heat and pressure) during the molding can be established by itself due to the elastic force. In addition, through the operation of opening the mold, the decorative resin layer of the film material S a restoration space.

Additionally, the formation of the air insulating layer produces the synergistic elongation effects of the temperature region in which rubber-like elasticity is indicated (ie, the elongation of time allows restoration), and the decorative resin layer of the film material S restores itself. Therefore, the minimum thickness Lm of the decorative resin layer of the film material S being molded, the thickness Lf of the decorative resin layer which satisfies the objective decorative surface operation after molding and the thickness of the Air insulation layer have an Lf-Lm < The > 0. The formed air-insulating layer is retained until the cooling time Ct preset by the fixing section of clamping condition 68 elapses. Specifically, when the state in which the decorative resin layer of the skin material S damaged during molding is restored itself is retained until the decorative resin layer reaches Tgs or a lower temperature, through the molecular movement of the resin in the decorative resin layer, the film material S is restored to a stable molecule state before molding in what will be provided as original decorative performance. Since the retention of subsequent cooling stops molecular movement, the restored state can be maintained. After the cooling time Ct has elapsed, the mold opening operation is performed to remove the molded product using the support device section (not shown). Before making5 the method for molding multiple layers of resin described ^ P above, contradictory molding controls for molding the resin of the core material Q and preventing damage to the decorative film material being molded in a series of molding processes, and the stable supply of the products. Multi-layer castings of high quality resin can be made without deteriorating the objective decorative surface performance.

[Second Modality] In the same manner as in the first embodiment, a method of molding a second embodiment shown in Figure 8 will be described using the device for molding multiple layers of resin shown in Figure 1. The device for molding layers multiple of • resin, the combination of the film material S and the resin of the core material Q, the type of film material S, and the method for fixing the film material S are the same as those of the first mode. After that the film material S is fixed in the open state of the mold and the initial clamping is effected, the filling by injection and the pressure retention / filling of the resin of the core material Q are effected. The initial fixed state, the multi-step control of the clamping, and the temperature condition ratio (Tsm> Tgs) during molding are also the same as those of the first mode. The integration of the film material S and the resin of the core material Q and the cooling / thermosetting of the resin of the material of the core Q are carried out in the cooling retention process,, and the comparison controller 74 detects that the signal of the temperature detector 76 matches the timing condition of the preset change in a temperature range which satisfies Tcc = Tgs and Tcc = Tsm by the setting section of the shift timing 72. Subsequently, the holding controller 64 operates the valve of hydraulic control 82 to effect a mold opening operation such that a space is formed between the decorative resin layer of the film material S and the face of the opposite molding cavity, forms the air insulating layer that satisfies the condition of Lf-L = La > 0. Additionally, the definition and effect of the thickness of the insulating layer of air are the same as those of the first mode.

The formed air-insulating layer is retained until the cooling time Ct preset by the fastening section in clamping condition 68 elapses. Subsequently, by performing the mold opening operation, a molded product is removed. In the method, for example, in a case where the decorative resin layer of the film material S is constituted of a crystalline resin, the decorative resin layer is heated by the amount of heat of the resin of the core material Q to Tgs or a higher temperature during molding, the low melting microcrystals in the resin composition melt, and the melting amount reaches its maximum at the temperature of Tsm. In the conventional molding method, since the molten microcrystals are recrystallized during cooling and act as a pseudo-crosslinking point to restrict molecular movement, the damage suffered during molding remains as such (frozen as a permanent stretch). In the molding method of the embodiment, however, the microcrystals of the decorative resin layer melt again in the process of forming the insulating layer of air. Further, in the temperature condition of T cc = Ts m, the decorative resin layer is heated again to Ts m or a higher temperature. Therefore, the microcrystals are completely melted again, and the point of pseudo-crosslinking that has restricted molecular movement is completely dissipated (the stretch caused by the deformation during molding is released). By cooling below Tgs or a lower temperature in the state, the molecular movement of the resin is shifted back to the stable molecular state before molding in which the film material has its original decorative performance. By cooling in the state, the molecular movement is stopped, and the damage of the decorative resin layer can be completely eliminated.

[Third Mode] In the same manner as in the first embodiment, a method of molding a third embodiment shown in Figure 9 will be described using the device for molding multiple layers of resin shown in Figure 1. In the method for molding layers multiple of resin described in the first and second embodiments, after the insulating layer of air is formed and retained, in an arbitrary time in a temperature range in which the temperature Tsc of the decorative resin layer of the film material S satisfies Tsc = Tgs, the mold is closed to remove the insulating layer of air in it, and the molding process continues. For example, when the molding method of the first embodiment is used, the air insulating layer is formed in the condition of change synchronization (1) in the same manner as in the first embodiment. In the state, the comparison controller 74 detects that the signal of the temperature sensor 76 coincides with the synchronization condition of the change (2) preset in a temperature range which satisfies by the fixing section Tsc = Tsm of the synchronization of the 72. Subsequently, the clamping controller 64 operates the hydraulic control valve 84 to perform the clamping operation in such a way that the space between the decorative resin layer of the film material S and the face of the mold cavity is eliminated. opposite. The fixed state is retained until the cooling time Ct preset by the fixing section of clamping condition 68 elapses. Subsequently, by performing the mold opening operation, a molded product is retained. Additionally, in the fixed state, the clamping force can be controlled to be changed in multiple stages. In the method, for example, the combination of the film material S including the decorative resin layer of a printed or painted resin film and the molds 3 and 4 including a cavity face of the specularly finished mold, since it is formed the air insulating layer, the decorative resin layer of the film material S being molded has a temperature Tgs or a higher temperature. In the temperature condition, the front transfer of the face of the mold cavity is effected. By cooling the decorative resin layer to Tgs or a lower temperature, a good transfer state of the face or frontal is frozen. As a result, the cracks produced in the manufacturing process of the film material S, the stretches generated in the deformation process during molding, and other surface defects can be completely eliminated. A molded multi-layer resin product having a highly glossy surface without any discoloration can be obtained. Further, for example, in combination with the molds 3 and 4 including a stamped mold cavity face, the formation of the air insulating layer and the subsequent clamping process, the exact stamped pattern transferred to the face can be frozen. the face of the mold cavity. Therefore, a molded multi-layer resin product can be obtained in which the entire surface is stamped uniformly and even a portion of the corner does not change in the patterned pattern. Next, Figure 2 will be described. As shown in Figure 2, a device for molding multiple layers of resin 100A of the present invention utilizes an injection molding machine for general purposes, and is constituted by a mold device 10, a holding device 20, and an injection device 30 and a control device 60A. The mold device 10 is constituted of a fixed mold 3 attached to a fixed board 1 and a mobile mold 4 attached to a mobile board 2, and the mobile board 2 and the mobile mold 4 can be advanced or retracted by a cylinder of holding 22 of the holding device 20. The holding device 20 is provided with a holding cylinder 22 for opening or closing the mold 3 and 4 of the mold device 10, and the movable mold 4 can be guided by some tie rod (not shown) and be advanced and retracted in relation to the fixed mold 3. In the injection device 30, a screw 34 provided with a spirally attached screw slat 36 can rotate and advancing or retracting freely in a barrel 32. When the screw 34 is operated by a hydraulic motor 42 for turning, the resin pellets supplied to a hopper 38 are fed to the front of the screw 34. During this operation, the resin granules they are heated by a heater (not shown) attached to an outer peripheral face of the barrel 32 while melting under the kneading action of the rotating screw. The molten resin fed to the front of the screw 34 is pushed outward towards a nozzle 39 by the screw 34 operated by an injection cylinder 40 to advance, and be injected into the mold cavity 5 formed between the molds 3 and 4 via the nozzle 39. Next, the control device 60A will be described. As shown schematically in Figure 2, the control device 60A is comprised of an injection controller 62, a holding controller 64, a molding device driver 66, a timer 78, a heating means controller 84, a heating temperature sensor 86 and a fixing section of the heating temperature condition 88. The injection cylinder 40 and the forward / reverse hydraulic motor 42 are controlled by a hydraulic control valve 52 that receives an order of operation of the injection controller 62 to advance and rotate the screw. The controller of the molding device 66 connected to the injection controller 62 is also connected to the holding controller 64. The temperature information of a decorative layer of the core material by a temperature sensor 8 is connected to the heating means controller 84 via the heating temperature detector 86. The controller of the heating means 84 is also connected to the fixing section of the heating temperature condition The information measured by the position sensor 70 attached to the moving table 2 is connected via the holding controller 64 for giving an operation order to the driver of the molding device 66, and also connected to the fixing condition fixing section 68. And the timer 78. In addition, the holding controller 64 transmits a signal to the holding cylinder 22 of the holding device 20 via a hydraulic control valve 82. Adicion Finally, the number 50 denotes a hydraulic supply on one side of the injection circuit, and 80 denotes a hydraulic supply on one side of the clamping circuit.

[Fourth Mode] A method of molding a fourth embodiment shown in Figure 10 will be described using a device for molding multiple layers of resin 100A shown in Figure 2. The combination of the film material S and the resin of the core material Q , the type of film material S, the fixing method for the film material S, the initial fixed state and the multi-stage clamping control are the same as those of the first mode. After the film material S is fixed and placed in the open state of the mold, the hydraulic control valve 82 is operated by the clamping controller 64 on the basis of the initial clamping condition preset by the clamping section of the condition. 68 for holding the initial fastening. Subsequently, the filling by injection and the retention / filling of the resin of the material of the core Q is effected. Here, figures 6 and 7 will be described. Figure 6 shows that the heating means of the decorative resin layer of the material of S film are incorporated into the mold. The mold device includes the heating means shown in Figure 6 constituted of the heating means 59, the holding controller 64, the controller of the heating means 84, the temperature detector of the heating means 86 and the section for fixing the condition of the heating temperature 88. As shown in Figure 6, heating by the heating means incorporated in the mold indicates that the face of the mold cavity is heated by a conductive heating element which it is positioned along a configuration of the mold cavity inside the closed mold to heat the decorative layer of the resin of the film material S. Simultaneously with the heating, the temperature of the decorative resin layer of the film material S is detected by the temperature sensor 8. At a point when the temperature of the decorative resin layer of the film material S reaches a pre-established temperature within the temperature region in which elasticity similar to that of rubber is indicated, the mold is opened and retained only for a fixed time. In addition to the heating means by the conductive heating element, placed inside the mold, even when, for example, heating the mold by means of circulating heating, the heating of the thin film by the coating of the face of the ^^ mold cavity with a thin film of conductive heating, heating the mold using magnetic, high frequency or other kind of heating induction heating, heating and radiation of a magnetic or microwave power plant, induction heating means mixing conductive substances in the decorative resin layer and direct heating of the decorative resin layer of the film material S, the heating means by hot air jet or the like of the decorative resin layer of the film material S, or other heating means used, can obtain the same effects. In addition, Figure 7 shows a case where the Heating means of the decorative resin layer of the film material S are incorporated outside the mold. As shown in Figure 7, moving the heating means 59 between the fixed mold 3 and the moving mold 4, the decorative resin layer of the film material S is ^ Warms up. Simultaneously with the heating, the temperature of the decorative resin layer of the film material S is detected by the temperature sensor incorporated in the heating means 59. After The temperature of the decorative resin layer of the film material S reaches a pre-set temperature within the temperature region in which the elasticity similar to that of the rubber is indicated, the temperature is retained only for a predetermined period.

In addition, examples of heating means 59 include a heater, a hot air sprinkler, irradiation by a halogen lamp or other methods of direct or indirect heating. Upon receipt of the synchronization command (1.) preset by the controller of the heating means 84 in the cooling retention process in which the integration of the film material S and the core material Q and the resin molding of the Q core material can be completely finished, the layer The decorative resin of the film material S is heated using the heating means 59 shown in FIGS. 6 and 7. After the controller of the heating means 84 detects that the detector signal of the heating temperature 86 matches the condition of the pre-set heating temperature in a temperature range which satisfies Tsc = Tgs of the setting section of the heating temperature condition 88, the holding controller 64 operates on the valve of the controller 82 to effect the operation of opening of the mold in such a way that a space is formed between the layer. decorative resin film material S ^^ and the face of the opposite mold cavity. It is formed from the insulating layer of air that satisfies the condition of Lf-Lm = La > 0. The definition and effect of the thickness of the layer air insulation are the same as the first mode. Subsequently, after reception of the synchronization command (2) preset by the fastening condition fixing section 68, the mold opening operation is performed to remove a product ^ M shaped. In the method, for example, even in the molding conditions in which the temperature conditions at which the temperature Tcc of the resin of the material of the core Q that is being molded into the The maximum temperature Tsm of the decorative resin layer of the film material S have a ratio Tcc = Tsm and Tcc = Tgs, a molded product of multiple layers of high quality resin can be obtained without deteriorating the objective decorative surface operation. In addition, the integration process of the film material S and the resin of the core material Q and the molding of the resin of the core material Q can be carried out separately from the process of self-restoration (damage prevention process. the decorative resin layer of the film material S. Therefore, a high dimensional accuracy without any deformation or warping is compatible with a high surface decorative performance.In addition, the air insulating layer is formed after heating in the embodiment, but the insulating layer of air can be formed simultaneously with the heating.Alternatively, after the insulating layer of air is formed, the heating can be carried out.In addition, the heating can continue even after the formation of the insulating layer of air , or interrupted or made intermittently.

[Fifth Mode] Successively after the process of forming the air insulating layer of the fourth embodiment, as shown in Figure 11, upon receipt of the pre-set synchronization command (3) within a temperature range of Tsc = Tgs by the fixing section in clamping condition 68, the mold is closed to remove the insulating layer of air and obtain a fixed state. Subsequently, upon receipt of the synchronization command (4) preset by the fastening condition fixing section 68, the mold opening operation is performed to remove a molded product. Additionally, the clamping force can be controlled to change in multiple stages in the fixed state. In the method, the effect described in the third modality is obtained in a more remarkable way. Specifically, a molded product of ^ Multiple layers of resin that has a high surface gloss without any discoloration or a molded product of multiple layers of resin uniformly stamped all its surface. Next, Figure 3 will be described. As shown in Figure 3, a device for molding multiple layers of resin 100B of the present invention utilizes an injection molding machine for general purposes, and is comprised of a device for • mold 10, a holding device 20, an injection device 30 and a control device 60B. The mold device 10 is constituted of a fixed mold 3 attached to a fixed board 1 and a mobile mold 4 attached to a mobile board 2, and the movable panel 2 and the mobile mold 4 can be advanced or retracted by a clamping cylinder 22 of the clamping device 20. The clamping device 20 is provided with a clamping cylinder 22 for opening or closing the molds 3. and 4 of the mold device 10, and the mobile mold 4 can be ^ guided by a strut (not shown) to advance or retract in relation to the fixed mold 3. In an injection device 30, a screw 34 is provided with a spiral strip screwed together 36 that can rotate and advance or retract freely in a barrel 32. When the screw 34 is operated by a hydraulic motor 42 for turning, the resin pellets supplied to a hopper 38 are fed to the front of the screw 34. During this operation, the granules of resin are heated by a heater (not shown) attached to the outer peripheral face of the barrel 32 while melting under the kneading action of the rotating screw. The molten resin fed to the front of the screw 34 is pushed out towards a nozzle 39 by the 0 screw 34 operated by an injection cylinder 40 to advance them and inject them into the cavity of a mold 5 formed between the molds 3 and 4 via the nozzle 39. Next, the control device 60B will be described. As shown schematically in Figure 3, The control device 60B is constituted by an injection controller 62, a holding controller 64, a molding device controller 66, a position sensor 70, a timer 78, an initial setting input section 90, a section quality determination input 92 and a storage section of a correction program 94. The injection cylinder 40 and the forward / reverse forward hydraulic motor 42 are controlled by the hydraulic control valve 52 which having received a The operation order of the injection controller 62 advances or rotates the screw. The controller of the molding device 66 connected to the injection controller 62 is also connected to the holding controller 64. The temperature information of the resin of the core material Q measured by the temperature sensor 8 is connected to the storage section of the program of correction 94 via the temperature sensor 76. The initial setting input section 90 is also connected to the storage section of the correction program 94, and in the storage section of the correction program 94 is connected to the input section. of quality determination 92 and timer 78. The information measured by the position sensor 70 attached to the mobile board 2 is connected via the holding controller 64 to give an operation order to the driver of the molding device 66, and also connected to the fixing condition fixing section 68 and the timer 78. In addition, the controller d The clamping 64 transmits a signal to the clamping cylinder 22 of the clamping device 20 via the hydraulic control valve 82. Additionally, the number 50 denotes a hydraulic supply on one side of the injection circuit, and the 80 denotes a hydraulic supply on a side of the clamping circuit.

[Sixth Mode] The molding of a sixth embodiment shown in Figure 12 will be described using the multi-layer resin molding device 100B shown in Figure 3. To effect the molding of multiple resin layers of the first to third embodiments, the molding factor data constituted from the configuration of the mold cavity, the physical properties of the resin of the core material, the constitution of a film material, the physical properties of the decorative resin layer, and the like are introduced from beforehand. The fixed values of the supplementary molding conditions consisting of the mold temperature, the resin temperature of the core material and the like are also fixed and introduced. Additionally, the molding conditions such as the filling condition by injection (filling by injection, retention / pressure filling), the clamping condition (initial fixed state, pattern of multi-step control of the clamping during molding), the Thickness of the air-insulating layer, the thickness of the decorative resin layer of the film material S after molding satisfying the target decorative decorative operation, and the synchronization condition of the change are initially set and introduced into the inlet section of the initial parameters 90. In addition, the setting of the initial parameters of the molding conditions, the approximate values recognized by an operator in a range of common sense in the operation can be set. The values are automatically corrected to the values of the optimum molding conditions through the subsequent correction operation by a correction program described below. Therefore, special knowledge, experience or skill are unnecessary, and anyone can make the adjustment. In addition, for the types and degrees of defects obtained from the results of the visual determination of the quality and the operator, a correction program was prepared in advance based on the pre-established direction and amount of correction and was introduced in the storage section of the correction program 94. The correction program is provided with a function to select a point that needs to be corrected from the values of the initially set molding conditions; a function that will lead to correcting the fixed value of the selected fixed point; and a function for issuing an operation command to change the supplementary molding conditions constituted of the mold temperature, the resin temperature of the core material and the like when the corrected fixed value reaches the pre-established critical correction value. The test molding by punch is carried out using any of the molding methods of the first to third embodiments. During molding, the resin temperature of the core material Q or the temperature of the decorative resin layer of the film material S (in this case, the temperature sensor 8 is also placed on the side of the decorative resin layer of the film material S) is detected by the temperature sensor 76, and is input to the storage section of the correction program 94. Additionally, the operator visually determines the quality of the resulting molded prototype after molding, and enters a result of quality determination (no defects or defective, type and degree of defect in case it is defective). Based on the result of the determination of the quality introduced, in the event that it is defective, the fixed value of the initially set molding condition is corrected according to the correction program, and the punch molding test is carried out again using the fixed value of the corrected molding condition (corrected comparison reference value). The operation is repeated as many times as necessary until defects are obtained as a result of the quality determination by the operator. When the quality determination gives a result of no defects, the fixed value of the molding condition corrected at that time becomes a fixed value of the optimum molding condition. The adjustment operation is completed in this way and is diverted to a real operation. Additionally, for which defective points of the quality determination results, for example, points can be introduced which indicate mold defects in the resin of the core material such as the generation of flash, short molding cycles, cambering and the like, and points that indicate deterioration of surface decorative performance such as damage to the film material. The correction program absorbs what you think of the molding principle according to the present invention that the damaged resin decorative layer of the film material S is restored by forming the air-insulating layer or that the transfer properties of the film face the cavity can be improved by a subsequent clamping. Accordingly, the optimum molding conditions for the contradictory and remarkably difficult molding controls for molding the resin of the core material Q and the prevention of the film material S from damage can be easily fixed. The correction point of the fixed value of the initial molding condition is selected and the direction of the correction (increase or decrease) and the quantity are calculated based on the correction program. In a case where the. method for molding multiple resin layers of the second embodiment, for example, for "damage of the film material" at the defective spots, by correcting the temperature setting in the synchronization condition of the change to form the air insulating layer and raising the resin temperature of the core material Q or the decorative resin layer of the film material S, the restoration capacity of the damage is improved. On the other hand, since the state of cooling / thermosetting (molding capacity) of the resin of the core material deteriorates, the correction is made in a direction in which the holding force / pressure filling is increased to compensate for the deterioration of molding capacity. Furthermore, by making the correction in a direction in which the thickness of the air-insulating layer is increased, the total balance of the molding is finely adjusted, and the restoration space of the decorative resin layer of the film material S increases. Additionally, for example, for the "generation of 5 burr", related to the capacity of resin molding • of the material of the core Q, the amount of filling by injection of the resin of the core material is corrected in a decreasing direction, and the condition of filling by injection (direction, velocity or the like) and the force of restraint in the state initial fixed are corrected in an increasing direction, to make a fine adjustment. ^^ In addition, the correction program is provided with a function for calculating the critical correction amount on the basis of an initial fixed value which is set simultaneously with the setting or initial setting / input of the values of the molding condition , and avoiding an error of conditioning an infinite cycle by repeating the correction. Specifically, in a case where the correction is repeated until the correction amount ^ reaches the critical correction amount, for example, since the temperature of the mold or the resin of the core material Q as the fixed value of the supplementary molding condition is set extremely low, the reduction of the temperature region in which elasticity is indicated similar to that of rubber (excessive reduction of the optimum molding condition range) is assumed to be caused by insufficient heating of the decorative resin layer of the film material S during molding. It is judged that the fixation of the fixed value of the supplementary molding condition instead of the fixed value of the molding condition is incorrect, and an order of increase / decrease correction is issued. In this case, the fixed value of the supplementary molding condition is corrected, so that the error of the condition by infinite cycle is avoided. In the method, even an operator with insufficient experience can easily set the optimum molding conditions, and dispersion of the quality of the molded product will not be generated by a difference in the operator's dexterity. In addition, the automation of the fixation of the optimum molding condition and the reduction of the conditioning time improve the productivity or produce other defects. As a result, a more stable supply of high-quality, high-quality resin multilayer molded products can be obtained without impairing the target surface decorative performance, and saving costs due to increased productivity.

[Seventh Mode] A seventh embodiment will be described with reference to Figure 13. When molding multiple resin layers of the fourth or fifth embodiment, the molding data is pre-set at fixed values of the molding condition supplementary, and the fixed values of the molding condition are initially set and entered. The device for molding multiple layers of resin, the content of the fixed values, the method of fixation and the content of the correction program are the same as those of the sixth embodiment, except that the means and conditions of heating are added as points 10. fixed to the values of the initial fixation condition. He . molding with punch test was carried out ^ using the method of molding the fourth or fifth W modalities. The subsequent determination of the quality and results introduced by an operator, the rule of correction, and the like are the same as those of the sixth embodiment, except that the correction program includes correction conditions for the heating means and conditions. The correction point is selected from the fixed values of the initial molding condition and the direction of the • correction (increase or decrease) and the quantity are calculated based on the correction program. In a case where the multi-layer resin molding method of the fourth embodiment was used, for example, for the "damage of the film material "at the defective spots, correcting the temperature setting in the heating condition by the heating means and raising the heating temperature of the decorative resin layer of the film material S, the damage restoration capacity is improved. Furthermore, by making the correction in a direction in which the thickness of the insulating layer increases, the restoration space of the decorative resin layer of the film material S increases, and the entire molding equilibrium is finely adjusted. In addition, for example, for the "deformation / warping" related to the molding ability of the resin of the core material Q, the synchronization condition of the change to form the insulating air layer was corrected in a lagging direction to increase the mobility of the resin of the core material Q (all the molded product). Additionally, the injection filling condition (pressure, velocity, or the like) and clamping force in the initial fixed state were corrected in one direction of an increment to make fine adjustments. In the method, in the same manner as in the sixth embodiment, the optimum molding conditions can be easily fixed regardless of the skill of the operator, and without generating dispersion of the quality of the molded product. In addition, the automation of the fixation of the optimum molding condition and the reduction of the conditioning time increase the productivity or produce other effects. In the embodiment, after completing the integration of the film material S and the resin of the material of the core Q and the molding of the resin of the material of the core Q, the complete self-restoration of the decorative layer can be obtained resin of the S film material by the process of ^) Heating and the formation of the insulating layer of air. Therefore, the optimum molding conditions can be set easily and quickly, and the selection interval of the combination of the film material S and the resin of the Q core material can be expanded.

[Eighth Mode] An eighth modality will be described with reference to Figure 14. When multi-layer molding is performed of resin from the first to the seventh embodiment, the hysteresis of the resin temperature of the core material Q and the decorative resin layer of the film material S during the molding is obtained in advance, for example, by measuring the changes in molding temperature at the time of punch molding or by calculation using the • CAE analysis method (Computer Aided Design) or similar. Based on the hysteresis, the synchronization condition of the change is set to form or remove the insulating layer of air with a delay signal of a timer that starts at an arbitrary time during molding.

The method of molding the fourth embodiment will be described illustrating a case where the method for molding multiple resin layers of the fourth embodiment is used. After fixing the film material S in the open state of the mold and effecting the initial clamping, filling by injection and retention / filling the resin pressure of the material of the core Q was effected. In the mode, for example, the timer 78 which starts at the moment of completing the initial subjection is used as a reference. The device for molding multiple layers of resin, the combination of a film material S and the resin of the core material Q, the type of film material S, the method for fixing the film material S, the initial fixed state and the The control of the multiple layers of the fastening are the same as those of the third embodiment, but with the premise that the establishment of the relationship of the temperature condition (Tsm> Tgs) during the molding is confirmed in advance. When the setting of the preset timer (1) is reached in the cooling retention process, the mold opening operation is performed to form a space between the decorative resin layer and the film material S and the cavity face of the opposite mold, and the air insulating layer is formed which satisfies the condition of Lf-Lm < The > 0. Here, the setting of the timer (1) indicates a point when the integration of the film material S and the resin of the material of the core Q and the cooling / thermosetting of the resin of the material of the core Q are substantially complete and the condition of temperature which satisfies Tcc = Tgs or Tsc = Tgs. Additionally, the definition and effect of the thickness of the insulating layer of air are the same as those of the third embodiment. When a fixation of the preset timer (2) is reached while forming the air insulating layer 10, the mold is closed to remove the air insulating layer and obtain a fixed state. The fixed state is A holds until the pre-set cooling time Ct. Subsequently, the opening operation of the mold is carried out to give a molded product. Here the The timer setting (2) indicates a point when the decorative resin layer of the film material S reaches its maximum temperature within the temperature range of Tcc = Tgs. In the method, the timing to form the layer D air insulator can be controlled with a simple control device only from the timer delay signal and, as a result, complicated contradictory molding controls can be used for molding the resin of the Q core material and preventing the damage of the S-film material. Further, by controlling the timing to close the mold to remove the air-insulating layer, the mold can be controlled to provide a high transfer capacity of the face of the mold cavity. Accordingly, the molding of multiple layers of resin in which the device is simplified, the operability and maintenance capacity are improved and the manufacturing costs are reduced.

[Ninth Mode] To effect the molding of multiple layers of resin of the first to seventh embodiments, the insulating layer of air can be formed, it can be obtained in the initial fixed state and the fastening control can be carried out in multiple stages of the molding using, for example , a mold device shown in Figure 4. Figure 4 shows a case where the means forming the air insulating layer are placed in a mold. For example, a guide rod 7 is fixed on the same axis as the hydraulic cylinder 45 on the rear face of the hydraulic cylinder 45 connected to a slidable cavity core 9 in the mold 4. A position sensor 70 is provided for detecting the stroke of the hydraulic cylinder 45 and a pressure sensor 56 to detect a supply of hydraulic pressure (clamping force). The clamping force during molding and the air insulating layer are formed by controlling the pressure and position of the hydraulic cylinder 45. The hydraulic cylinder 45 is advanced or retracted by connecting a hydraulic control valve 54. In addition, a controller is connected to the hydraulic cylinder 45. mold clamping 58 to the position sensor 70, the pressure sensor 56 and the molding device driver 66. In the case where multi-layer molding is performed using the mold device in Figure 4, the conditions for synchronization of change to form and remove the air insulating layer, the initial clamping condition, the condition of the multi-stage clamping control pattern, and the like are fixed by means of the mold clamping controller 58 via the mold device driver 66 In the method, for example, even if the molding device is not provided with means to form the insulating layer of air, obtaining the state f Initially controlling the multi-stage clamping during molding, contrary controls can be achieved for the formation of the resin of the core material Q and the prevention of damage of the film material S, simultaneously, in a series of molding processes. The stable supply of multi-layered products of high quality resin can be realized without deteriorating the objective decorative decorative operation. Additionally, the core of the cavity 9 with the face of the mold cavity formed therein is advanced or retracted by the hydraulic cylinder or the like incorporated within the mold, but the movable mold 4 can be fully operated, e.g. to a pressure block or the like that includes an advance / retract unit out of the mold.

[Tenth Modality] When molding multiple layers of resin from the first to the seventh embodiment, a mold structure can be used in which, as shown in Figure 5, an insulating cavity layer 48 is formed on the face of the mold cavity opposite the decorative resin layer of the film material S. Figure 5 shows an example in which the face of the mold cavity opposite the decorative resin layer of the film material S has a structure of insulating cavity, and in the structure of the insulating cavity, the insulator is formed of, for example, a metal having a low thermal conductivity, a resin, a ceramic or the like.

In the method, the decorative resin layer of the film material S during molding is retained very effectively in a stable temperature condition of Tgs or greater for a prolonged time, and can be further increased to the restoration capacity. Especially in the molding method in which the mold is closed again after the air-insulating layer is formed, since the temperature of the decorative resin layer of the resin material S can be prevented from decreasing by means of the face of the insulating cavity, this remarkable effect, contributes to the improvement of the quality of the molded product. Furthermore, even when the temperature of the face of the mold cavity opposite the decorative resin layer of the film material S is retained by inserting a hot tube into the mold to heat the mold, the heating means circulating through a circulation hole of hot medium formed inside the mold to heat the mold, the same effect of induction heating of the mold, induction heating means placed outside, or by other means can be obtained .

[Other Modifications] In addition to the multilayer resin molding methods shown in the first to tenth embodiments described above, the following molding methods can be performed with the mode or alone. For example, by using a plurality of injection devices which can inject / fill a plurality of resin types of the core material Q simultaneously, the film material S having decorative performance can be integrally molded simultaneously on the surface of the resin of Q core material laminated in multiple layers. In this method, a multi-layered product of resin provided with multifunctional characteristics can be obtained which can not be satisfied by a resin of core material Q of a single layer. In addition, in a case where a resin of multi-layer material Q including a foamed resin is used, restoring the decorative layer of resin damaged by the film material S simultaneously controlling the thickness of the insulating layer of air in a forming process of the air-insulating layer, the magnification of the foam of the foamed resin can be controlled, and foamed molding of the foamed resin can be effected in a series of molding processes. In the first to tenth embodiments mentioned above, the film material S is integrally molded on a resin surface of the core material Q, but can be molded integrally on the opposite surfaces or the resin surface of the core material Q, additionally In addition to the resin, for example, a metal film or paint agent can be applied to the surface or portion of the intermediate decorative layer of the decorative resin layer of the film material S as needed. The decorative resin layer of the material S is heated / processed by heating means 59 in a series of molding processes in the molding method of the fourth mode but, for example, still using an air-heating oven and other fans heating means for heating / processing the molded product after the ^ molding and separate from the molding processes, the self-restoration effect of the decorative layer can be obtained resin of the film material S in the same manner. This case, however, has the disadvantage that a heating device separated from the molding device is necessary and that it wears out because the completely cold molded product needs to be heated at a temperature It is normal at a predetermined temperature, but has the advantage that a number of molded products can be stocked to be heated / batch-processed. Additionally, after carrying out the heating process in a separate process, the molded product can be molded or pressed, for example, with a similar separate pressing device. In this case, the effect described in the molding method of the fifth embodiment can be expected. In the above molding methods of the first to tenth embodiment, for example, an oxidation-proof lubricant could be applied in advance to the face of the cavity. mold opposite to the decorative resin layer of the film material S. In this case, the oxidation-proof lubricant enters the cavities on an irregular microscopic surface of the face of the mold cavity, and the face of the mold cavity it can be completely smoothed as if there were no irregularities. Therefore, the formation of fissures causing friction due to deformation / slippage of the film material being molded is effectively avoided. Especially in the molding methods of the third and fifth modes, by applying an oxidation-proof lubricant in the clamping process after the formation of the air-insulating layer to effectively smooth the face of the cavity, it can be improved even more the cavity of the molded product. Additionally, the oxidation-proof lubricant is an oil such as a mineral oil, a vegetable oil and the like; glycerin or alcohol; or water or aqueous solution, and it is a liquid or a mixed liquid which may exist in the cavities of the irregular microscopic surface of the face of the mold cavity as liquid without evaporating due to the temperature during molding.

Industrial Applicability To use the multi-layer resin method the device according to the present invention, for any type of film material in which the decorative resin layer formed by lamination according to the decorative surface purpose of the portion of the decorative surface layer consisting of a resin film, a woven resin fabric, a non-woven resin fabric, a woven or non-woven fabric of resin alone or in combination and the intermediate decorative layer portion consisting of a foamed region on the support surface of the portion of the decorative surface layer as required, and the base layer consisting of a resin film, a resin-woven fabric, a non-woven resin fabric or a combination thereof as needed laminated , contradictory molding controls can be achieved simultaneously for the resin molding of the core material and the prevention of damage of decorative film material in a series of molding processes. Additionally, such high quality multilayer castings can be provided in a stable manner at low cost without deteriorating the objective decorative surface performance. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (11)

CLAIMS Having described the invention as above, the content of the following claims is claimed as property:

1. A method for molding multiple layers of resin in which a film material having a decorative layer of resin on a surface and a resin of core material is integrally molded in a mold, characterized in that it comprises the steps of: presetting a relationship of a vitreous transition point (Tgs) of the decorative resin layer of the film material and a supply temperature (Tc) of a molten resin that forms a core material to satisfy Tgs < Tc, and effect the molding on the condition that a maximum temperature (Tsm) of the decorative resin layer of the film material during molding satisfies Ts' > Tgs; and where within a temperature range in which a temperature (T cc) of the resin of the core material being molded satisfies T cc = T gs at the pre-established arbitrary time, which produces a space between the decorative resin layer of the material of film and face of the mold cavity opposite the decorative resin layer to form and retain the air insulating layer.

2. The method for molding multiple layers of resin according to claim 1, characterized ^ p because within a temperature range in which the temperature (Tcc) of the resin of the core material being molded satisfies Tcc = Tsm and Tcc = Tgs at the pre-established arbitrary time, a gap is formed between the layer 10 decorative resin film material and the face of the mold cavity opposite the decorative resin layer to form and retain the air insulating layer. •

3. The method for molding multiple layers of resin according to claim 1 or 2, 15 characterized in that after the insulating layer of air is formed, within the temperature range in which the temperature (Tsc) of the decorative resin layer of the film material satisfies Tcc = Tgs at a pre-established arbitrary time, the mold is closes to remove and retain the insulating layer of air.

4. A method for molding multiple layers of resin in which a film material having a decorative layer of resin on a surface and a resin of the core material is integrally molded in a mold, Characterized in that it comprises the steps of: at an arbitrary preset time after a molten resin forming a core material is supplied, using heating means incorporated within the mold or joining them outside the mold, and heating the decorative resin layer of the film material to a vitreous transition point (Tgs) or a higher temperature and subsequently form a space between the decorative resin layer of the film material and one face of the mold cavity opposite the decorative resin layer to form a 10 air-insulating layer, or forming the air-insulating layer and subsequently heating the decorative resin layer of the film material to Tgs or a higher temperature, or heating and simultaneously forming the air-insulating layer, to retain the air-insulating layer .

5. The method for molding multiple layers of resin according to claim 4, characterized in that after the insulating layer of air is formed, in a temperature range in which a temperature (Tsc) of JThe decorative resin layer of the film material • ^) satisfies Tsc = Tgs at a prearranged arbitrary time, closes the mold to remove and retain the insulating layer of air.

6. The method for molding multiple layers of resin in accordance with any of the 25 claims 1-3, characterized after an injection filling condition to fill by injection the molten resin that forms the core material in a space of the mold cavity and fill an amount that shrinks by cooling / thermosetting, a condition of clamping during injection filling, a thickness of the air insulating layer, a condition of synchronization of the change to form the air insulating layer, and a synchronization condition of the change to eliminate the 10 air insulating layer are initially set as the molding conditions, ^ the test molding and visual quality determination are carried out by an operator, in a case where it is necessary to change the molding conditions based on the 15 results of the visual quality determination, a correction program prepared to correct the molding conditions is used, and the optimum molding conditions are set to prevent the decorative resin layer of the film material being molded from being damaged .

7. The method for molding multiple layers of • resin according to any of claims 4 or 5, characterized after a condition of filling by injection to fill by injection molten resin that forms the core material in a space of the cavity of the 25 mold and fill an amount of shrinkage of cooling / thermosetting, a clamping condition during the filling by injection, a thickness of the insulating layer of air, a synchronization change condition to form the insulating air layer, a condition of change of synchronization to remove the insulating air layer, and heating to heat the decorative resin layer of the film material using the heating means which are initially set as the molding conditions, the test molding and the visual determination of the quality are performed by an operator, in a case where it is necessary, to change the molding conditions based on the results of the visual determination of the quality, a correction program prepared to correct the molding conditions is used, and the conditions of optimal molding to prevent the decorative resin layer of the film material being molded be damaged The method for molding multiple layers of resin according to any of claims 1-7, characterized in that a minimum thickness (Lm) of the decorative resin layer of the film material being molded, a thickness (Lf) of the decorative resin layer after molding satisfying a required decorative surface operation as a multi-layer molded product, and a thickness (La) of the air insulating layer have a ratio Lf-Lm < The > 0. 9. The method for molding multiple layers of resin according to any of the claims 1-5, characterized in that the film material is a The lamination of a decorative resin layer which is formed by laminating a portion of decorative surface layer consisting of a resin film, a woven resin fabric, a non-woven resin fabric, and a woven or non-woven fabric. 10 woven with resin relief alone or in combination and a portion of intermediate decorative layer consisting of a ^ foamed resin on a support surface of the portion of the decorative surface layer as necessary according to a decorative surface purpose, and a layer 15 base consisting of a resin film, a woven resin fabric or a non-woven resin fabric or a combination thereof, as required. 10. The method for molding multiple layers of resin according to any of claims 1-7, characterized in that the temperature of the resin of the # core material and the temperature of the resin decorative layer of the film material are detected during molding, and the synchronization control of the change to form the air insulating layer and the synchronization control of the change to remove the insulating layer of air are made in response to a signal of the detected temperature. The method for molding multiple layers of resin according to any of claims 1-7, characterized in that the control of the synchronization of the change to form the insulating layer of air and the control of the synchronization of the change to eliminate the insulating layer of air are made in response to a delay signal of a timer which starts at an arbitrary time during molding. 12 .. The method for molding multiple layers of resin according to claim 6 or 7, characterized in that a function for selecting a point that needs to be corrected from the values of the initially set molding conditions is based on the direction of the correction and the amount of the preset correction corresponding to the defective points of quality and the degrees of quality defects obtained by the results of the visual determination of the quality of the operator, a correction function of a fixed value of the selected fixed point, and a function to issue an operation order to change the supplementary molding conditions constituted by a mold temperature, a resin temperature of the core material, and the like when the corrected fixed value reaches a pre-set critical correction value given by the correction program. 13. The method for molding multiple layers of resin according to any of the claims 1-5, characterized in that it uses the mold in which a layer of the insulating cavity forms on the face of the face of the mold cavity to the decorative resin layer of the film material. 14. A device for molding multiple layers of resin in which a film material having a decorative layer of. resin on a surface and a resin of the core material are molded integrally in a mold, characterized in that it comprises: support means for supporting and fixing the material 15 of film in a predetermined position of a cavity of a mold and supporting a molded product in a predetermined position after molding, and supply means for supplying a molten resin forming a core material in a space of the mold cavity; and a fastening condition fixing section • to fix / introduce a fixing condition and a thickness of an air insulating layer during the supply and after supply of the molten resin, a fixing section of the synchronization of the change for a condition of 25 synchronization to form the air insulating layer and a synchronization condition of the change to remove the air insulating layer, a temperature detection section to detect a resin temperature of the core material and a temperature of the decorative resin layer of the film material during molding, a comparison control section for comparing / determining a detection signal of the temperature sensing section and a fixed value of the fixing section of the change synchronization, and a control section of subject to control 10 the clamping means based on a signal of the comparison control section and a fixed value of the clamping condition fixing section. 15. A device for molding multiple layers of resin in which a film material having a layer The decorative resin on a surface and a resin of core material are integrally molded in a mold, characterized in that it comprises: support means for supporting / fixing the film material in a predetermined position of the mold cavity and supporting a molded product in a position • predetermined after molding, and supply means for supplying a molten resin that forms a core material in a space of the mold cavity; and a fastening condition fixing section 25 for fixing / introducing a clamping condition and a thickness of an air insulating layer during the supply and after the supply of the molten resin, a fixing section of the heating temperature condition to set a temperature at which the decorative layer of resin of the film material is heated, a section of detection of the heating temperature to detect the heating temperature of the decorative resin layer of the film material, heating means to heat the decorative resin layer of the material of film based on a fixed value of the fixing section of the heating temperature condition and a detection signal of the heating temperature detection section, and a clamping control section for controlling the clamping means in the base to a fixed value of the fixing section of the clamping condition. The device for molding multiple layers of resin according to claim 14 or 15, characterized in that the device for molding multiple layers uses an injection molding device. The device for molding multiple layers according to claim 16, characterized in that it comprises: an initial adjustment input section for initially setting / introducing as a values of the molding conditions a filling condition for filling by injection the molten resin which forms the core material in the space of the mold cavity and fill a number of contractions by cooling / thermosetting, a clamping condition during injection filling, the thickness of the air insulating layer, the synchronization condition of the change for forming the insulating layer of air, and the synchronization condition of the change to remove the air insulating layer; a control section of the molding device for operating / controlling the device for molding multiple layers to effect the molding of multiple layers of resin based on fixed values of the initial setting input section, an input section for determining the cavity to enter the results of the visual determination of the quality; and a correction program storage section for correcting the values of the molding condition initially set on the basis of the entered values of the input section of the quality determination to a fixed optimum molding condition to prevent the decorative layer from forming. resin of the film material being molded is damaged. The device for molding multiple layers according to claim 16, characterized in that it comprises: an initial adjustment input section for initially setting / introducing as values of the molding condition an injection-filled condition for injection molding the resin melt that forms the core material in the space of the mold cavity fill an amount of shrinkage by cooling / thermosetting, a clamping condition during injection filling, the thickness of the air insulating layer, the synchronization of the change to form the air insulating layer, the synchronization of the change to remove the insulating layer of air, a heating condition for heating the decorative resin layer ^^ of the film material using the heating means; a control section of the molding device 15 for operating / controlling the multi-layer molding device for effecting the molding of multiple layers of resin based on fixed values in the initial setting input section, an input section for determining quality to introduce results of visual quality determination; and a storage section of the correction program for correcting the values of the initial setting molding condition based on the input values of the quality determination input section for 25 setting the optimum molding conditions to prevent damage to the decorative resin layer of the film material being molded. The device for molding multiple layers of resin according to any of claims 14-18, characterized in that it comprises a timer which starts at an arbitrary time during the molding, and a section of the synchronization of the change to fix the condition of synchronization of the change to form the air insulating layer, and the condition of change synchronization to remove the air insulating layer in response to a timer delay signal. The device for molding multiple layers of resin according to any of claims 14-18, characterized in that the means for forming the air insulating layer are incorporated in the mold. The device for molding multiple layers of resin according to any of claims 14-18, characterized in that the layer of the insulating cavity forms on the decorative resin layer of the film material and the face of the cavity of the opposite mold the decorative layer of resin.