JPH05116165A - Method and device for manufacturing laminate - Google Patents

Abstract

PURPOSE:To manufacture a laminate which prevents a heat medium from leaking from a pressing/heating unit of a double belt press and has required properties upto the end, using the double belt press. CONSTITUTION:A belt-type metal sheet 9 is arranged on both ends of a laminated material of a belt-type resin-impregnated base 1 and a belt-type metal foil 2 which is introduced into the effective pressing width of a continuous belt 5 on a double belt press 50. The belt-type metal sheet 9 is transported in the same direction and at the same speed as the continuous belt 5. As the belt-type metal sheet 9 is present at the position of a seal part 6a on a pressing/ heating unit 6, no clearance is created between the seal part 6a and the continuous belt 5, and thus no leakage of a heat medium occurs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a laminated sheet with a metal foil by a double belt press used in electronic equipment and the like.

[0002]

2. Description of the Related Art A method for manufacturing a metal foil-clad laminate used for electronic equipment is to stack a required number of prepregs and metal foils cut into a certain size in a multi-stage press and sandwich them with a smooth metal mirror plate. There are a batch method in which pressure and heating are performed for 2 to 3 hours, and a continuous method in which the resin-impregnated base material and the metal foil are overlapped and moved while being pressurized and heated.

The continuous method includes a roll pressing method and a double belt method, and in recent years, a method of manufacturing a laminated plate by the double belt pressing method which can secure a desired heating and pressing zone has been attracting attention.

As shown in FIG. 3, the double belt press system is a double belt press method in which a predetermined number of strip-shaped resin-impregnated base materials 1 wound in a roll shape and a strip-shaped metal foil 2 wound in a roll shape are superposed on each other. It is sent to 50, and these are continuously laminated to form one laminated plate in which the strip-shaped metal foil 2 is arranged on one side or both sides of the strip-shaped resin-impregnated base material 1. When manufacturing a laminated sheet without a metal foil, a release film is used instead of the strip-shaped metal foil, and the release film is peeled off after molding.

The double belt press 50 is formed by winding a stainless endless belt around a pair of rotary drums 4 and 4 to form a continuous belt 5, which is opposed to the upper and lower two stages, and a laminated material is fed between them to be integrated. Device. A pressure heating unit 6 is provided on the back side of the central portion of the continuous belt 5, and a heating medium of high pressure and high temperature is sent to this unit 6 to apply pressure and heat to the laminated material from the back side of the continuous belt 5. The laminated materials are integrated into a laminated plate, and the laminated plate 3 is cut into a predetermined size by a cutting machine 7 to obtain a product 8.

In the double belt press 50, the high-pressure and high-temperature heat medium is fed to the stationary heating unit 6 provided on the back side of the moving continuous belt 5, so that the sealing of the heat medium is the most important issue. Becomes Normally, the heat medium seal portion 6 a is provided on the outer peripheral portion of the pressurizing and heating unit 6. Therefore, pressurization and heating are insufficient in the seal portion 6a, and the curing is less likely to occur than in the central portion of the pressurizing and heating unit 6 (within the effective pressurizing range) that is molded at regular pressure and temperature. The degree tends to be insufficient, and various properties such as insufficient curing, insufficient strength, and dimensional instability deteriorate.

Therefore, various measures have been taken in order to reduce such deterioration of characteristics. For example, a method of simply narrowing the width of the laminated material and forming only in the central portion of the pressure heating unit 6, or a method of arranging strip-shaped cloth materials on both sides of the laminated material to prevent the heat medium from leaking from the seal portion 6a. There is.

[0008]

When the width of the laminated material is simply narrowed and molding is performed only in the central portion of the pressurizing and heating unit 6, the resin viscosity of the resin-impregnated base material 1 is lowered by heating, and the resin flows to both sides. As a result, the seal portion 6a of the pressurizing / heating unit 6 is not applied with sufficient pressure, and the heat medium leaks from the seal portion 6a. In the method of arranging the strip-shaped cloth material on both sides of the laminated material, the leakage of the heat medium from the seal portion 6a is reduced, but the cloth material is deformed by the pressure and heating, and the dimension of the laminated plate varies, and It has a short life and is cut, or lint in the cutting part gets in,
There are various problems such as a defective appearance of the laminated plate after molding.

The present invention has been made in view of the above circumstances, and a manufacturing method and a method for easily obtaining a laminated plate having little leakage of a heat medium from a seal portion and having excellent characteristics over the entire surface after molding and It is intended to provide the manufacturing apparatus.

[0010]

According to the present invention, a continuous belt 5 is formed by laminating a laminated material 3 composed of a predetermined number of belt-shaped resin-impregnated base materials 1.
In a method for manufacturing a laminated plate in which the two are fed to opposite double belt presses and heated under pressure, strip-shaped metal thin plates 9 are provided on both sides of the laminated material 3 inserted into the effective pressurizing width of the continuous belt 5 in the double belt press. Is a method of manufacturing a laminated plate.

Whether the strip-shaped metal thin plates 9 arranged on both sides of the laminated material 3 are inserted at the same time when the laminated material 3 is inserted into the double belt press and moved at the same speed as the laminated material 3 (FIG. 1). Alternatively, it is previously attached to the entire circumference of the continuous belt 5 of the double belt press (FIG. 2). The width of the strip-shaped thin metal plate 9 is preferably equal to or larger than the difference between the effective pressing width of the continuous belt 5 and the width of the laminated material 3. Specifically, 20-200m
m is good.

When the strip-shaped metal thin plate 9 is mounted on the entire circumference of the continuous belt 5, it is mounted on either or both of the upper side and the lower side. Further, the strip-shaped metal thin plate 9 and the continuous belt 5 are fixed by welding or double-sided adhesive tape.

The thickness of the strip-shaped metal sheet 9 is substantially equal to or slightly smaller than the thickness of the laminated material 3, and the variation thereof is 0.
It is preferably 1 mm or less. Further, the material is preferably softer than the material of the continuous belt 9, such as aluminum,
Gold, copper, lead, etc. are preferred. In particular, aluminum is the most preferable in terms of price and durability.

In order to insert the strip-shaped metal thin plate 9 at the same time when the laminated material 3 is inserted into the double belt press, it is necessary to adjoin the roll for supplying the laminated material 3 arranged on the inlet side of the continuous belt 5. A roll 90 for feeding the thin metal plate is arranged, a roll 91 for winding the thin metal plate is arranged on the exit side of the continuous belt 5, and the strip-shaped thin metal plates 9 are sequentially wound.

What is particularly important here is that the strip-shaped metal thin plate 9 arranged on the surface of the continuous belt has a uniform thickness and the positional deviation from the surface of the continuous belt is small. It is necessary to make the thickness thinner than the thickness of the laminated plate from which suitable characteristics after molding can be obtained. Usually, the thickness of the laminated plate after molding is 0.1 to 2.0 mm, so that the thickness of the strip-shaped metal thin plate 9 is also preferably 0.1 to 2.0 mm. Therefore, the plate thickness accuracy is preferably 0.1 mm or less.

In order to prevent the strip-shaped thin metal plate from shifting from the continuous belt, it is necessary to have an appropriate width, which is 20 to 200 m.
m is preferable, and when it is 20 mm or less, positional deviation easily occurs, and when it is 200 mm or more, it becomes difficult to handle. In order to firmly dispose the strip-shaped metal thin plate 9 on the continuous belt, both ends of the strip-shaped metal thin plate 9 may be connected by welding. By connecting the strip-shaped metal thin plate 9 by welding, deviation of the strip-shaped metal thin plate 9 can be prevented. Further, when the deviation easily occurs due to the difference in the material between the strip-shaped metal thin plate 9 and the continuous belt 5, the shift between the strip-shaped metal thin plate 9 and the continuous belt may be prevented with a double-sided adhesive tape or the like.

[0017]

Since the strip-shaped metal thin plates 9 are provided between the continuous belts 5 at the seal portions on both sides of the laminated material 3 inserted into the effective pressurizing width of the continuous belt 5 in the double belt press, the applied pressure is It is secured and the seal is not insufficient.
Therefore, the leakage of the heat medium from the seal portion of the pressurizing and heating unit is reduced, and a laminated plate having excellent properties over the entire surface after molding can be obtained.

[0018]

【Example】

Example 1 FIG. 1A is a plan view showing a main part of a manufacturing apparatus according to the present invention, and FIG. 1B is a side view showing a schematic configuration of the apparatus. As shown in the figure, the resin impregnation rate 4 obtained by impregnating glass cloth with epoxy resin and heating and semi-curing
Four strip-shaped resin-impregnated base materials 1 having a thickness of 0 wt%, a thickness of 0.2 mm, and a width of 500 mm are superposed, and strip-shaped copper foils 2 having a thickness of 35 μm are arranged on both surfaces thereof, which are continuously arranged as shown in FIG. Inserted between the upper and lower continuous belts 5 and 5 of the double belt press 50, heated under pressure at 4 MPa and 180 ° C., and the thickness is 0.8 mm.
The laminated plate of was molded.

At this time, the laminated material consisting of the resin-impregnated substrate 1 and the copper foil 2 has a thickness of 0.2 ± 0.01 mm and a width of 300 on both sides.
2 mm thin aluminum plates with a thickness of 0.15 ± 0.0
One thin aluminum plate having a width of 1 mm and one having a width of 300 mm was stacked and fed simultaneously from the metal thin plate feed roll unit 90. Then, these are continuously moved, the laminated plate 3 after forming is cut by a cutting machine 7 to obtain a product 8 having a length of 1000 mm, and a strip-shaped aluminum thin plate 9 is wound by a winding roll portion 91 for metal thin plate. I took it. The gap between the laminated material 3 and the aluminum thin plate 9 was set to about 10 mm. The pressure heating unit 6 has a width of 1100 mm and a length of 3500 m.
m, and the feed rate of the continuous belt 5 was 1500 mm / min. Thus, length 1000mm, width 500mm,
It was possible to continuously manufacture a laminated plate having a thickness of 0.8 mm and less variation in the width direction and a narrower width than the pressure heating unit 6 and good characteristics. Further, in this case, the leakage of the heat medium from the seal portion 6a was small. Moreover, in this case, the width of the laminated material including the resin-impregnated base material 1 and the copper foil 2 could be appropriately changed.

Example 2 A laminated board was manufactured in the same manner as in Example 1 using the apparatus shown in FIG. In FIG. 2, the continuous belt 5 of the double belt press 50 is made of stainless steel, and has a thickness of 0.7 ± 0.02 mm and a width of 100 mm at both end edges of the upper belt 5.
The strip-shaped aluminum thin plate 9 was attached. The aluminum thin plate 9 is provided on the entire circumference of the continuous belt 5, and both ends thereof are connected by welding so as not to be easily displaced. The distance between the aluminum thin plates 9 is 1000 mm. As shown in FIG. 2A, each aluminum thin plate 9 was provided at the position of the seal portion 6a of the pressure heating unit 6. The pressurizing and heating unit 6 had a width of 1100 mm and a length of 3500 mm, and the feeding speed of the continuous belt 5 was 1500 mm / min.

The resin-impregnated base material 1 is obtained by impregnating glass cloth with an epoxy resin, heating and semi-curing the resin so that the resin impregnation rate is 4
As shown in FIG. 2 (b), four strip-shaped resin-impregnated base materials 1 having a thickness of 0 wt%, a thickness of 0.2 mm, and a width of 1000 mm are stacked, and strip-shaped copper foils 2 having a thickness of 35 μm are arranged on both surfaces thereof. , Continuous upper and lower continuous belts 5 and 5 of double belt press 50
It was inserted between them and heated under pressure at 4 MPa and 180 ° C. to form a laminated plate having a thickness of 0.8 mm. Thus, width 1000
It was possible to continuously manufacture a laminated plate having a thickness of 0.8 mm and a thickness of 0.8 mm with little variation in the width direction and having good characteristics. Also,
In this case, the leakage of the heat medium from the seal portion 6a was small.

Comparative Example A laminated plate was manufactured in the same manner as in the above-described Example except that the thin aluminum plate 9 was not used. In this case, the leakage of the heat medium from the seal portion 6 was about 5 times larger than that in the example. Further, the laminated plate obtained in the comparative example had a thickness of 0.7 mm at both ends in the width direction of 80 mm, and when cut by the cutting machine 7, the glass cloth at both ends had poor machinability.

[0023]

As described above, according to the present invention, when a laminated material in which a strip-shaped metal foil is superposed on at least one side of a strip-shaped resin-impregnated base material is continuously manufactured by a double belt press, the surface of the continuous belt is By arranging thin metal strips on both sides in the width direction, leakage of heat medium from the seal part of the pressurizing and heating unit can be reduced compared to the conventional one, and the characteristics such as thickness characteristics can be improved over the entire surface of the laminated plate. You can

[Brief description of drawings]

FIG. 1 is a plan view showing a main part of a manufacturing apparatus according to an embodiment of the present invention, and FIG. 1 (b) is a side view showing a schematic configuration.

FIG. 2 is a plan view showing a main part of a manufacturing apparatus according to another embodiment of the present invention, and FIG.

FIG. 3 is a side view showing a schematic configuration of a conventional manufacturing apparatus.

[Explanation of symbols]

 1 band-shaped resin impregnated base material 2 band-shaped metal foil 3 laminated material 5 continuous belt 6 pressure heating unit 9 band-shaped metal thin plate

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display area B29L 9:00 4F 31:34 4F

Claims (5)

[Claims] 1. A method for manufacturing a laminated plate, comprising feeding a laminated material comprising a predetermined number of belt-shaped resin-impregnated base materials to a double belt press with continuous belts facing each other, and applying pressure and heating.
A method for producing a laminated plate, comprising: arranging strip-shaped metal thin plates on both sides of a laminated material to be inserted into an effective pressing width of a continuous belt in the double belt press. 2. The method for producing a laminated plate according to claim 1, wherein the strip-shaped metal thin plates arranged on both sides of the laminated material are fed into the double belt press at the same time as the laminated material. 3. The method for producing a laminated plate according to claim 1, wherein the strip-shaped metal thin plates arranged on both sides of the laminated material are fixed in advance to the entire circumference of the continuous belt of the double belt press. 4. An apparatus for feeding a laminated material between continuous belts of a double belt press, pressurizing and heating while moving this to form a laminated plate, and supplying the laminated material arranged at the starting end side of the continuous belt. And a metal thin plate feed roll part, which is arranged so as to be adjacent to the roll part and inserts and disposes the strip-shaped metal thin plates on both sides of the laminated material as the laminated material is inserted into the effective pressure width of the continuous belt. An apparatus for manufacturing a laminated plate, comprising: a metal thin plate winding roll portion that is arranged on the terminal end side of the continuous belt and that sequentially winds the metal thin plates that are inserted and arranged on both sides of the laminated material. 5. An apparatus for forming a laminated plate by feeding a laminated material between continuous belts of a double belt press and moving the laminated material to form a laminated plate, wherein a belt edge outside the effective pressure width of the continuous belt. An apparatus for manufacturing a laminated plate, characterized in that strip-shaped metal thin plates are mounted on both sides of the laminated material inserted between continuous belts all around.