JPS602185B2 - Method and device for manufacturing metal foil laminates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing a single-sided or double-sided metal foil-clad laminate suitable as a printed wiring board.

Conventionally, metal foil-clad laminates have a thickness of 0.5 to 5. Prepreg or thermoplastic resin is obtained by impregnating the base material with a thermosetting resin as an adhesive between the two press plates using clean and untarnished press plates made of stainless steel or the like with a smooth side surface. A predetermined number of adhesive sheets obtained by impregnating a resin are stacked together (hereinafter, this prepreg or a predetermined number of stacked adhesive sheets are referred to as "laminating prepreg") and bonded to one or both sides of the outermost layer of the laminating prepreg. With adhesive or thickness 5-20 without adhesive
A clean and dust-free metal foil having a diameter of 0 m is then hot-press molded after overlapping a release film if necessary, and after the hot-press molding, the press plate is separated from the metal foil. Here, the press plates are used in circulation to obtain metal foil-clad laminates, but when manufacturing the above-mentioned laminates, the press plates and metal foils are cleaned and dematerialized before hot-pressing. Dust floating in the air in the environment and fiber waste generated from workers' clothes can adhere between the press plate and the metal foil, and this dust can cause dents on the surface of the metal foil after hot-pressing. This is to prevent this from occurring.

However, in this conventional method, the metal foil is manually cut to a size slightly larger than the size of the press plate and then the metal foil is placed on the press plate, so the metal foil may wrinkle due to slight carelessness on the part of the worker. There was a drawback that dust could get in there, and dust could fly through it.

Recently, two metal foil rolls have been used, one of which is unwound, a press plate is placed on top of this metal foil, and the other metal foil roll is placed on top of this press plate. is unraveled, the top and bottom surfaces of the press plate are continuously coated, the coated metal foil is bonded under pressure on at least two sides of the press plate, and the press plate is cut at the same time. A method for manufacturing foil-clad laminates was published in the Japanese Patent Publication No. 52-22.
No. 380, this method automates the coating process of the press plate, thereby producing a metal foil-clad laminate with a smooth surface without minute scratches.
The manufacturing equipment has become larger due to the use of adhesive coating equipment, metal foil pressure bonding/cutting equipment, etc., which has the drawback of requiring a large equipment area and large capital investment. The present invention aims to improve this, and provides a method and apparatus for producing a metal foil-clad laminate that is economical and requires a small number of devices, and can produce a laminate with a smooth metal foil surface and no minute dents. The purpose is to provide

The present invention continuously supplies clean and dust-free metal foil to an automatic or manual loading device for clean and dust-free press plates, which is the final process of a press plate clean and dust-free line, and presses the press plate. It is characterized by being integrated by folding and wrapping it around.

In this case, the metal foil folded portion can be cut at the same time as the metal foil is wound, or it can be cut all at once after a certain number of units have been wound.

That is, the first feature of the present invention is that the metal foil supplied from one metal foil roll is continuously folded onto a press plate loading device, and the press plate is folded into the metal foil at each folding cycle. The manufacturing method involves feeding it by sandwiching it between the two.

A second feature of the present invention is a conveyor layer for conveying press plates, and a layer adjacent to this conveyor which inherits the press plates conveyed from this conveyor and is configured so that the entire conveyor moves forward or backward. A belt conveyor, a loading device adjacent to the belt conveyor and configured to load press plates carried from the belt conveyor so that the height from the horizontal surface can be raised and lowered, and on this loading device - a metal foil roll. a folding device for successively folding the metal foil by unwrapping the folding device; A manufacturing apparatus includes a folding device and a control device for controlling the folding device.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a diagram showing the basic structure of a press plate sandwiched between metal foils according to an embodiment of the present invention.

FIG. 1A is a plan view of this basic configuration, and FIG. In FIGS. 1A to 1C, 1 is a press plate, 2 is a metal foil, and 3 is an adhesive part.

The press plate 1 is a stainless steel plate with a thickness of about 1 mm, smooth on both sides, and cleaned and dust-free. The metal foil 2 is smooth on one side and roughened on the other side, and has an area twice as large as that of the press plate 1 so that it can completely cover both sides of the press plate 1, which is clean and dust-free. It is a copper foil with a thickness of 50 French meters and a rather large area. In order to sandwich the press plate 1 between the metal foils 2, use the etched surface (
The press plate 1 is sandwiched so that the upper and lower ends of the metal foil 2 are aligned at the adhesive part 3, with the surface to be attached to the loading prepreg facing outward. The adhesive part 3 is a stapler paper binder, and several places are simply adhered. FIG. 2 is a configuration diagram of an apparatus for sandwiching a press plate between metal foils according to an embodiment of the present invention.

In FIG. 2, each symbol corresponds to each symbol in FIG. 1, respectively. The conveyance device 5 conveys the clean and dust-free press plate 1 to an adjacent belt conveyor 6. In this belt conveyor 6, not only the driving rollers 7 and 8 rotate to drive the belt 9, but also the conveyor 6 itself moves forward and backward by a certain distance. Adjacent to the rollers 8 of this belt conveyor 6 is a stacking layer 10 .

The loading device 10 loads the sandwiched press plate 1,
The height of the press plate 1 rises and falls from the horizontal plane depending on the loading capacity of the press plate 1. Further, in the loading device 101, a husband plate 11 which is slightly larger in size than the press plate 1 is placed. Also, the loading device 10
A folding ring 12 for folding the metal foil 2 is provided above the metal foil 2. This folding device 12 is provided with a take-up roller 13, a pair of feed rollers 15, 16, and a swing arm 17 that connects the take-up loaf 13 and the feed rollers 15, 16.

The pair of feed rollers 15 and 16 rotates as the take-up roller 13 rotates. Further, the feed rollers 15 and 16 are oscillated by a oscillating arm 17 while rotating in opposite directions. Further, at the rear of the loading device 10, a clean, non-oxidized metal foil roll 18 is installed.

The metal foil 2 unwound from the metal foil roll 18 is passed between the feed rollers 15 and 16 from the upper surface of the take-up roller 13. This metal foil roll 18 is passively rotated by the drive of the take-up roller 13, and is designed to apply a certain degree of tension to the metal foil 2 spread on the husband plate 11 of the loading device 10 to prevent wrinkles from occurring. In addition, each drive of the said conveyance device 5, belt conveyor 6, loading device 10, and folding device 12 is controlled by the control device 19. That is, the control device 19 is electrically connected to the drive motor 21 of the conveying device 5, the drive motor 22 of the belt conveyor 6, the lifting motor 23 of the loading device 10, and the drive motor 24 of the folding device 12. has been done. Further, a light emitter 26 and a light exposure converter 27 are provided between the conveyor 5 and the belt conveyor 6, and a light emitter 28 and a photoelectric converter 29 are provided between the belt conveyor 6 and the loading device 10. The outputs of the photoelectric converters 27 and 29 are connected to the control device 19. To explain the operation of the apparatus of this embodiment with such a configuration, first, the conveying device 5 is driven to move the press plate 1 onto the belt conveyor 6.
move it to

When the press plate 1 blocks the light from the light emitter 26, the belt conveyor 6 starts to be driven, and the whole moves forward while driving the belt 9, and at the same time the take-up roller 13 of the folding device 12 and the feeder. While the rollers 15 and 16 rotate, the turbulence arm 17 is swung to unravel the metal foil roll 18, and the metal foil 2 is transferred to the loading device 10.
Spread it on the husband board 1 1. Note that during the above operation, the press plate 1
When the light from the light emitter 26 is blocked and the light is transferred to the belt conveyor 6, the conveying device 5 stops. Next, when the roller 8 of the belt conveyor 6 blocks the light from the light emitter 28, the belt conveyor 6 reduces its forward speed, and when the roller 8 reaches the desired position above the husband plate 11 after a certain period of time has elapsed since the light was blocked. Stop (Figure 2 A).

After the belt conveyor 6 has stopped, the belt 9 is driven while moving backward, and the press plate 1 that has been carried is placed on the metal foil 2 on the husband plate 11.

Following the retreat of the belt conveyor 6, the folding device 12
is driven, and a new metal foil 2 is spread on the pressed plate 1 which has been coated with a layer of metal. A round bar 30 with a diameter longer than the width of the metal foil 2 is moved onto the upper surface of the expanded metal foil 2, and the metal foil 2 is wound around the press plate 1. When the swinging arm 17 is swung to its maximum extent, the round bar 30 is stopped at a predetermined metal foil folded portion 2a. Furthermore, when the belt conveyor 6 retreats and the light from the light emitter 28 enters the photoelectric converter 29, the belt conveyor 6 stops, and at the same time the height of the loading device 10 is lowered by the thickness of the press plate 1. The transport device 5 is driven again (second
Figure mouth).

Thereafter, each belt and device are driven repeatedly in the same manner, and the press plate 1 is sent out while being sandwiched between the folded metal foils 2. FIG. 3 is a diagram showing a state in which the sandwiched press plates 1 are stacked in multiple stages. 4 to 6 are diagrams showing a specific embodiment in which the metal foil 2 is wrapped around the press plate 1 using the round bar 30, and the press plate 1 is sandwiched and stacked.

FIG. 4 is a diagram showing a method of stopping the round bar 30 at a predetermined metal foil folding part 2a and extracting the round bar 30 from the metal foil folding part 2a after the next press plate 1 is sent out. .

With this method, it is not necessary to have a large number of Maruhane 30.

FIG. 5 is a diagram showing a method of stopping the round shape 30 at a predetermined metal foil folding part 2a and immediately cutting it at the metal foil folding part 2a after the next press plate 1 is loaded.

With this method, the cutting operation of the metal foil 2 in the next step can be omitted.

FIG. 6 shows a method in which the round bar 30 is stopped at a predetermined metal foil folded part 2a, and after the next press plate 1 is reloaded, the round bar 30 is left on the metal foil folded part 2a.

By this method, the press plate 1 can be quickly wrapped and loaded with the metal foil 2, and furthermore, the metal foil folded portion 2a can be easily cut in the next step.

FIG. 7 shows a method in which perforations or the like are applied to one or both of the metal foil 2 at the corresponding locations of the metal foil folded portion 2a during continuous supply of the metal foil 2, without using the wrapper 30, and the metal foil 2 is wound. It is a figure which shows the method of attaching.

With this method, the press plate 1 can be
can be quickly wrapped with metal foil 2 and loaded.

After cutting the metal foil folded portion 2a, the metal foil 2 is simply glued using a stapler so as to wrap around the press plate 1, or the prepreg for lamination is pressed in the next step without simple gluing. It can be inserted between the plates 1.

This can be easily achieved by wrapping one end of the press plate 1 with the metal foil 2 and by making the working direction of the press plate 1 in the direction in which it is wrapped with the metal foil 2. FIG. 8 shows an example of the manufacturing process after the press plate 1 is sandwiched between the metal foils 2 and the metal foil folded portions 2a are cut.

In FIG. 8, the metal foil 2 is folded, and the metal foil folded part 2
The press plate 1 that has been cut at point a is stacked alternately with prepregs for lamination 32, which are obtained by impregnating a base material 31 with a thermosetting resin and stacking a predetermined number of prepregs (8th
Figure A). Next, as an example, a release film 33 and a press plate la are superimposed on both sides of the outermost layer in which the press plate 1 and the laminating prepreg 32 are stacked alternately, and the press plate 34
(Figure 8).

After molding, the metal foil 2 is stuck to the laminating prepreg 32, so the folded portion 2b of the metal foil 2 is cut and the press plate 1 is separated to obtain a metal foil-covered laminate 35. Separated press plate 1
is cleaned and dust-free and used for circulation. In the above example, the thickness of the press plate was 2, but the thickness was 0.5 to 5.
．． Including those as thick as the proboscis.

Furthermore, the material of the press plate includes metals other than stainless steel. In addition, an example of the metal foil with a thickness of 50 meters was shown, but
Including those with a thickness of 5 to 200 m. Further, the material of the metal foil is not limited to copper, but includes nickel, aluminum, Kovar alloy, and the like. Further, the surfaces of the metal foil include those whose surfaces are smoothed on both sides. Further, the folding device may be configured to reciprocate in the same direction as the driving direction of the belt conveyor while rotating the feed roller without using the swing arm. As described above, according to the present invention, by continuously stacking the press plates on the continuously supplied metal foil, it is possible to reduce the adhesion of dust, etc. to the press plate 1 and the metal foil. This prevents this and produces a laminate without even the slightest dents.

'Wrapping and folding the metal foil around the press plate can be done with very little manual effort. The device is compact and can be easily incorporated into existing production lines, improving work efficiency and providing excellent economic effects.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the basic structure of a sandwiched press plate according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a device for sandwiching a press plate according to an embodiment of the present invention. FIG. 3 is a diagram showing a state in which sandwiched press plates according to an embodiment of the present invention are stacked in multiple stages. FIG. 4 to FIG. 7 are detailed explanatory views of the winding and folding of the metal foil around the press plate according to the embodiment of the present invention. FIG. 8 is a manufacturing process diagram of a metal foil-clad laminate according to an embodiment of the present invention. 1...Press plate, 2...Metal foil, 2a, 2b・
... Metal foil folded part, 3... Adhesive part, 5... Conveying device, 6... Belt conveyor, 7... Drive roller, 8...
...Roller, 9...Belt, 10...Loading device, 1
DESCRIPTION OF SYMBOLS 1... End plate, 12... Folding device, 13... Take-up roller, 15, 16... Feed roller, 17... Swinging arm, 18... Metal foil roll, 19...・Control device, 21
~24...Motor, 26,28...Light emitter, 27,
29... Photoelectric converter, 30... Maruhane, 31... Base material, 32... Prepreg for lamination, 33... Release film, 34... Press, 35... Metal foil lining Laminated board. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. The press plate is pressed so that when the metal foil is attached to the prepreg for lamination, the surface of the metal foil is in close contact with the press surface of the clean and dust-free press plate. In the method for manufacturing a metal foil-clad laminate including the step of coating with the metal foil, the metal foil supplied from one metal foil roll is continuously folded onto a press board laminating device, and the A method for manufacturing a metal foil-clad laminate, characterized in that a press plate is supplied so as to be sandwiched between the metal foils. 2. The method of manufacturing a metal foil-clad laminate according to claim 1, wherein the metal foil folded portion is defined by placing a round bar longer than the width of the metal foil on the metal foil folded portion each time the metal foil is folded. 3. The method for manufacturing a metal foil-clad laminate according to claim 1, wherein the metal foil folded portion is defined by forming a crease in advance on the metal foil folded portion. 4. A conveying device that conveys a press plate, a belt conveyor adjacent to the conveying device and configured to take over the press plate carried from the conveying device and move the entire conveyance forward or backward, and a belt conveyor adjacent to the belt conveyor and configured to move the entire conveying device forward or backward. A loading device is configured to load press plates carried from a conveyor and move up and down in height from the horizontal surface, and a folding device that unwraps a single metal foil roll and continuously folds the metal foil on this loading device. a folding device; and a control device that controls the conveying device, the belt conveyor, the loading device, and the folding device so that the press plate is sandwiched between the metal foils for each cycle of operation of the folding device. Manufacturing equipment for metal foil-clad laminates.