JPH06155614A - Continuous molding engineering method of laminated sheet - Google Patents

Abstract

PURPOSE:To shorten the horizontal length of production line. CONSTITUTION:Resinous liquid is infiltrated in base material 1 in continuous form during the continuous feeding. A plurality of sheets of the resin- impregnated base material 1 are piled up during their continuous feeding so as to be continuously passed through a heating and curing oven 2 in order to thermally cure the resin and laminate a plurality of sheets of base material 1 for laminate-molding laminated sheet 3. In this case, in the heating and curing oven 2, the base material 1 is bent upwards for making a detour for passing the base material 1 in the heating and curing oven 2. Thus, the horizontal distance of the heating and curing oven 2 is shortened as compared with the length of the line of a heating and drying process in case that the base material 1 is fed horizontally in the heating and curing oven 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous molding method for continuously molding a laminated plate to produce it.

[0002]

2. Description of the Related Art A laminated board is manufactured by impregnating a base material such as glass cloth or paper with a varnish of a thermosetting resin and drying it to prepare a prepreg. Stack the sheets and, if necessary, stack metal foils such as copper foils on top and bottom of them, and then set the stacked ones between the hot plates and the press plates. Is done by doing. However, this method has a problem in productivity because the molding is a batch method.

Therefore, a continuous forming method has been proposed, and recently, research on this continuous forming method has progressed. The continuous molding method for laminated plates is such that a long base material is continuously fed while the base material is impregnated with a resin solution, and a plurality of base materials impregnated with this resin are continuously fed and passed through a laminating roll. And stack long metal foils on top of each other as necessary, continuously feeding them, and then, passing this stack continuously through a heating and curing furnace to heat-cure the resin and a plurality of sheets. The laminated plate is manufactured by laminating the base materials of (1) to form a laminated plate, and further cutting into a predetermined size.

[0004]

However, in manufacturing a laminated board by the continuous molding method as described above, it is necessary to cut a long base material from the resin liquid impregnation step to the laminating step and the heat drying step. In order to send without a product, a production line in which a series of processes is continuous becomes very long in the horizontal direction, and there is a problem that it is difficult to install the production line in a factory.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a continuous molding method for a laminated plate which can shorten the horizontal length of the manufacturing line.

[0006]

A method of continuously forming a laminated plate according to the present invention is a substrate 1 which continuously feeds a long substrate 1.
Is impregnated with a resin solution, and a plurality of base materials 1 impregnated with the resin are continuously fed and piled up, and then continuously passed through a heating and curing furnace 2 to heat and cure the resin and a plurality of base materials. When laminating the laminated plate 3 by laminating the materials 1, the base material 1 is bent upward in the heat curing furnace 2 so as to bypass the base material 1 while passing through the heat curing furnace 2. It is a feature.

[0007]

When the base material 1 is continuously passed through the heating and curing furnace 2 to heat and cure the resin, the base material 1 is bent in the heating and curing furnace 2 upward and bypasses the heating and curing furnace 2. Since 1 is passed, the horizontal distance of the heating and curing furnace 2 can be shortened and the line length of the heating and drying process can be shortened as compared with the case where the substrate 1 is fed horizontally.

[0008]

EXAMPLES The present invention will be described in detail below with reference to examples. As the base material 1, glass cloth (woven cloth or non-woven cloth), paper, or the like can be used, and a long material is used in a rolled state. Then, the resin material is impregnated into the base material 1 while continuously feeding and feeding the long base material 1. As this resin, a thermosetting resin such as an unsaturated polyester resin, an epoxy resin, or a vinyl ester resin can be used. In the continuous molding method, since pressure is not applied when the resin is cured, it is preferable to use these thermosetting resins that do not generate gas during the curing reaction.

A resin liquid supply pipe 10 is disposed above each substrate 1 as shown in FIG. 1, and the resin liquid supply pipe 10 is provided.
The resin liquid is made to flow down in a curtain flow manner from a large number of holes provided on the lower surface of the base material, and the resin liquid is made to flow down to the upper surface of the base material 1, whereby the base material 1 is impregnated with the resin liquid. When the resin liquid is supplied to the upper surface of the base material 1 in this manner, the resin liquid can be permeated into the base material 1 while allowing the air in the base material 1 to escape from the lower surface of the base material 1. The base material 1 can be impregnated with the resin liquid without air remaining inside. Further, the base material 1 is bent on the turn roll 11 to be bent obliquely in the vertical direction and fed, so that the length of the impregnation step in the horizontal direction is shorter than that in the case where the base material 1 is fed in a straight line. I am doing it.

After the base material 1 is continuously fed and impregnated with the resin liquid as described above, a plurality of base materials 1 are passed between the laminating rolls 4 and 4 while the base material 1 is continuously fed. By doing so, a plurality of base materials 1 are laminated by the adhesive force of the resin liquid. At this time, when the base material 1 passes between the laminating rolls 4 and 4, the excess resin liquid is squeezed and removed, so that the resin liquid contained in the base material 1 is regulated to a prescribed appropriate amount. Has become. If necessary, one or both of the upper and lower surfaces of the laminated base material 1 are laminated with a metal foil 13 such as a copper foil. The metal foil 13 is used in a state in which a long one is wound in a roll shape, and the laminating roll 14 is laminated while being continuously fed out and fed to the outer side of the laminated base material 1. , 14 and the metal foil 13 is laminated on the base material 1. The laminating roll 14 is only for stacking the metal foil 13 on the base material 1, and it is preferable not to apply a pressing force. Further, when the resin impregnated in the base material 1 is an epoxy resin, it is not necessary to apply an adhesive to the metal foil 13 because the adhesiveness with a metal is good, but an unsaturated polyester resin or a vinyl ester resin is required. In the case of, the metal foil 13 coated with an adhesive is used.
It is preferable to secure the laminated adhesive strength of.

After laminating the base material 1 and the metal foil 13 as described above, they are continuously fed and passed through the heating and curing furnace 2. The heating and curing furnace 2 can be formed by using a hot air circulation dryer, an infrared dryer, or any other heating dryer, and the inlet 2a enters the outlet 2b.
While exiting, the resin liquid impregnated in the base material 1 is heated to cause a curing reaction, and a laminated plate 3 in which a plurality of base materials 1 and metal foils 13 are laminated with the cured resin can be formed. . In this way, when the laminate is formed by heating in the heat curing furnace 2, the base material 1 is not particularly pressed, but since air does not remain in the base material 1 as described above, the laminated plate The voids contained in No. 3 can be reduced.

Here, the heat curing furnace 2 has a detour portion 6 formed by bending the rear part thereof upwardly and convexly.
The front end of is formed as a horizontal horizontal portion 7. Then, the base material 1 that has entered the heat curing furnace 2 through the entrance 2a at the front end is fed horizontally through the horizontal portion 7, and then is guided by the guide roller 8 to be fed obliquely upward through the bypass portion 6 and the bypass portion 6 of the bypass portion 6. At the top, the direction is changed, the detour 6 is sent obliquely downward, and the exit 2b at the rear end is led out. Immediately after being introduced into the heating and curing furnace 2 through the inlet 2a, the resin liquid with which the base material 1 is impregnated has not been dried yet.
In the above, the base material 1 is fed horizontally so that the resin liquid does not flow along the inclination of the base material 1. After the resin is heated and dried in the horizontal portion 7, the base material 1 can be allowed to pass through the heat curing furnace 2 for a long time by diverting the base material 1 upward in the bypass portion 6. The material 1 can be heated and dried for a long time. In this way, the base material 1 is bent upward in an inverted V shape or an inverted U shape, and is passed through the heating and curing furnace 2 through a route that bypasses the base material 1.
The horizontal length of the heating and curing furnace 2 can be remarkably shortened as compared with the case where the same distance is fed horizontally in a straight line, and the horizontal distance of the heating and drying step can be shortened. is there.

Next, the laminated plate 3 coming out of the outlet 2b of the heating and hardening furnace 2 is cut by a cutting device 15 into a required size. Since it is difficult to sufficiently cure the resin in the laminated plate 3 molded in this way in the heating and curing furnace 2, after cutting the laminated plate 3 into a required size, the laminated plate 3 is put into the after-curing furnace 16 and after-cured. To completely cure the resin. The after-curing furnace 16 can be formed by using a hot-air circulating heater, an infrared heater, or any other heating device, and the after-curing furnace 16 is provided with an elevator device 17 for vertically conveying. Therefore, while the laminated plate 3 supplied from the inlet 16a into the after-cure furnace 16 is sent upward by the elevator device 17 and then further downward, the laminated plate 3 is heated in the after-cure furnace 16 and after-sales is performed. I try to cure it. In this way, the elevator device 17 is used to move the laminated plate 3 to the after-curing furnace 1
By longitudinally feeding the inside of 6, the horizontal length of the after cure furnace 16 can be shortened as compared with the case where the laminated plate 3 is horizontally fed, and the horizontal distance in this step can be shortened. It is a thing.

The after-cured laminated plate 3 is taken out from the outlet 16b of the after-curing furnace 16, is further sent to the cooling tank 18, and is rapidly cooled in the cooling tank 18 to enhance the dimensional stability of the laminated plate 3. Perform. Cooling water 19 is supplied into the cooling tank 18, and an elevator device 20 for vertically conveying the water is provided.
The laminated plate 3 supplied from the inlet into the cooling tank 18 is rapidly cooled by being immersed in water 19 while being sent downward by the elevator device 20 and then sent further upward. By vertically feeding the laminated plate 3 in the cooling tank 18 by the elevator device 20 as described above, the horizontal distance of the cooling tank 18 can be shortened as compared with the case where the laminated plate 3 is horizontally fed. The horizontal distance can be shortened.

The laminated plate 3 thus cooled is the cooling tank 1
After being taken out from the outlet portion of 8, the water is wiped off with a sponge roll or the like and dried, and then loaded on the stock table 21 to be stocked and stored or shipped.

[0016]

As described above, according to the present invention, when the base material is continuously passed through the heating and hardening furnace to heat and cure the resin, the base material is bent upward in the heating and hardening furnace while being detoured. Since the base material is passed through the curing furnace, the horizontal distance of the heating and curing furnace should be shortened compared to when the base material is fed horizontally to the heating and curing furnace to shorten the line length of the heating and drying process. The entire length of the production line can be shortened.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Base Material 2 Heat Curing Furnace 3 Laminated Plate

Claims (1)

[Claims] 1. A long curing base material is continuously fed to impregnate a base material with a resin solution, and a plurality of base materials impregnated with the resin are continuously fed and stacked, and then placed in a heating curing furnace. In laminating and molding a laminated plate by laminating a plurality of base materials while continuously passing through to heat and cure the resin,
A continuous molding method for a laminated plate, characterized in that a base material is passed upward through a heat curing furnace while curving the base material upward in a heat curing furnace so as to bypass the base material.