JPH05220863A - Laminated board manufacturing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the energy efficiency of continuous production equipment for laminated plates and reduce the variation of the obtained products. A vertical type equipped with a device 2 for stacking and laminating continuous strip-shaped laminated materials 1, a device 3 for cutting the laminated continuous strip-shaped laminated materials to a predetermined size, and a device for transferring the cut laminated material upwards. The curing furnaces 4 are arranged in this order.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a laminated board used for electric equipment and the like.

[0002]

2. Description of the Related Art The following is a continuous manufacturing apparatus for laminated plates. A continuous strip-shaped fiber base material or prepreg wound in a roll shape and a continuous strip-shaped thermoplastic resin film also wound in a roll shape, by a roll so that the fiber base material or prepreg is sandwiched by this thermoplastic resin film. They are laminated (the fiber base material is impregnated with a liquid resin before being laminated with a roll), and the mixture is sent to a double belt press. The laminated fiber base material or prepreg is heated in a double belt press to cure the resin. Then send it to the curing oven,
Heat to completely cure the resin. The continuous laminated body thus obtained is cut into a product by a cutter. A metal foil may be used instead of the thermoplastic resin film to form a metal foil-clad laminate.

[0003]

In such a conventional manufacturing apparatus, the laminated body has a continuous strip shape and the curing furnace is horizontally long. Therefore, there is a drawback that heat is radiated to the upper surface of the furnace by convection of air in the furnace, which not only deteriorates thermal efficiency but also makes the temperature distribution in the furnace non-uniform, resulting in large variation in product size. It is an object of the present invention to provide a laminated plate manufacturing apparatus that does not have such drawbacks.

[0004]

The present invention provides an apparatus 2 for stacking and laminating continuous strip-shaped laminated materials 1, an apparatus 3 for cutting the laminated continuous strip-shaped laminated materials to a predetermined size, and a cut laminated material. Vertical curing furnace 4 equipped with a device for transferring upward
Are arranged in this order.

The manufacturing apparatus of the present invention will be described below with reference to FIG. Note that FIG. 1A is a schematic view showing the entire laminated plate manufacturing apparatus, and FIG. 1B is an enlarged view of the cutting device 3 and the vertical curing furnace 4. The B-staged prepreg 1a of the impregnated resin and the thermoplastic resin film 1b are superposed by a laminating roll 2a. The laminated material 11 that has been overlapped is sent to the double belt press 2b and heated and pressed. The laminated material 11 is pulled out from the press by the pull-out roll 5 and cut into a predetermined size by the cutting device 3. The cut laminated material 11a is placed on the pallet 4a of the vertical curing furnace 4 by a pusher (not shown). The pallet 4a moves up in the vertical curing furnace 4 on the inlet side, then moves down, and circulates. The resin of the laminated material is completely cured by the time the pallet 4a rides down the vertical curing furnace and reaches the outlet. The laminated material coming to the outlet of the vertical curing furnace is pushed out of the furnace by a pusher (not shown) and cooled to be a product.

[0006]

The heat is transmitted upward in the hardening furnace by convection, and the laminated material to be heated rises in the hardening furnace. Therefore, the temperature distribution in the furnace becomes uniform. Further, since the area of the upper surface of the curing furnace can be reduced, the upward heat radiation occupying the largest weight is reduced.

[0007]

【Example】

Example 1 Eight prepregs (60% resin content, 2% volatile content) dried by impregnating epoxy resin (catalyst content 3%) with a plating catalyst into kraft paper having a basis weight of 125 g / m ² and having a thickness of 50 μm
It was sandwiched by the triacetate film of 1 and heated with a continuous belt press having a width of 1 m. The heating temperature is 150 ° C. and the pressure is almost pressureless. Molding speed of continuous belt press is 1.2m /
In minutes The laminated material discharged from the continuous belt press was cut into a length of 1 m and passed through a vertical curing furnace at 170 ° C. The transit time was set to 30 minutes. The thickness of the obtained laminated plate is about 1.6 mm.

Example 2 In addition to the heating condition of 180 ° C. in the vertical curing furnace, Example 1
A laminated plate was prepared in the same manner as in.

Comparative Example 1 The same as Example 1 except that a horizontal curing furnace was used in place of the vertical curing furnace, a continuous belt press having a width of 1 m was used for molding, and then the mixture was charged into the horizontal curing furnace without being cut. To produce a laminate. The conveying speed in the horizontal curing furnace was 0.2 m / min, and the material was passed in 30 minutes.

Comparative Example 2 In addition to the heating condition of 180 ° C. in the horizontal curing furnace, Comparative Example 1
A laminated plate was prepared in the same manner as in.

Table 1 shows the energy efficiency, heat resistance and dimensional stability of the laminated plates in Examples 1 and 2 and Comparative Examples 1 and 2.

[0012]

[Table 1]

[0013]

According to the manufacturing apparatus of the present invention, the continuous strip-shaped laminated material is cut before being put into the curing furnace, and the curing furnace is of a vertical type, so that quality variation is reduced and energy efficiency can be improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. (A) is an overall schematic view, and (b) is an enlarged view of a curing furnace and a cutting device.

[Explanation of symbols]

 1 Laminating Material 2 Laminating Device 3 Cutting Device 4 Vertical Curing Furnace

Claims (1)

[Claims] 1. Vertical curing comprising a device for stacking and laminating continuous strip-shaped laminated materials, a device for cutting the laminated continuous strip-shaped laminated materials to a predetermined size, and a device for transferring the cut laminated material upward. An apparatus for manufacturing a laminated plate, characterized in that furnaces are arranged in this order.