JP4960696B2 - Laminate production method - Google Patents

Description

  The present invention relates to a method for manufacturing a laminated board in which a laminated board in which a metal foil is bonded to a film-like base material is continuously produced by laminating the metal foil and the film-like base material using a double belt press machine. .

Conventionally, the manufacturing process of a laminated board using a double belt press machine includes: (1) preparing a roll-like long laminated board material; and (2) a plurality of sheets provided in front of the insertion opening of the double belt press machine. Laminated plate materials are individually set on the shaft. (3) Laminated plate materials are individually unwound from the shaft in accordance with the line speed of the double belt press machine. (4) The individually unrolled laminated plate materials are vertically symmetrical. It was performed by inserting continuously between the continuous belts of the double belt press machine arrange | positioned in (refer patent document 1).
JP-A-5-42555

  By the way, when manufacturing the laminated board by which metal foil was adhere | attached on the film-form base material using the above-mentioned double belt press machine, the process by which metal foil and a film-form base material are inserted in the insertion port of a double belt press machine. When the film-like base material, which is easily charged with static electricity, partially sticks to the adjacent metal foil, the positional deviation may occur or the interference may cause damage. Therefore, when manufacturing a laminated sheet in which a metal foil is bonded to a film-like substrate using a double belt press machine, the process in which the metal foil and the film-like substrate are inserted into the insertion port of the double belt press machine In order not to interfere with each other, it is necessary to sufficiently separate the transport paths of the metal foil and the film-like substrate from each other. However, when the metal foil and the film-like substrate are sufficiently separated from each other, a wide space area is required around the metal foil and the film-like substrate. Furthermore, when a wide space area is formed around the conveyance path of the metal foil and the film-like substrate, a large number of laminated plates are simultaneously formed using a double belt press machine, or multiple laminated plates are manufactured. At this time, it becomes difficult to secure a space area, and it becomes impossible to manufacture substantially.

  The present invention has been made to solve the above-described problems, and its purpose is to provide interference between the metal foil and the film-like substrate without increasing the space area around the transport path between the metal foil and the film-like substrate. It is providing the manufacturing method of the laminated board which can prevent.

In order to solve the above-mentioned problems, in the method for producing a laminate of the present invention, the metal foil is bonded to the film-like substrate by laminating the metal foil and the film-like substrate using a double belt press machine. A method for producing a laminated plate for continuously producing a laminated plate, the step of individually unwinding the metal foil and the film-shaped substrate from the roll-shaped metal foil and the film-shaped substrate, respectively, and the unrolled metal foil and a step of pre-bonding the film-shaped substrate so as not to separate, and a step of supplying a pre-bonded metal foil and the film-shaped substrate in a double-belt press, in the process of the preliminary adhesive, the Reserve the metal foil on both sides of the film substrate by charging one surface and the other surface of the film substrate and bringing the metal foil into contact with one surface and the other surface of the charged film substrate. While wearing, a plurality of sets each other prebonded metal foil and the film-form substrate and prebonded, the step of supplying said double-belt press, continuous supply of the plurality of sets with each other which is pre-bonded And the manufacturing method of the laminated board characterized by carrying out the lamination molding process of the said metal foil and the said film-form base material.

  According to the method for producing a laminate according to the present invention, since the metal foil and the film-like substrate are preliminarily bonded to such an extent that they are not separated, they are supplied to the double belt press machine. The interference between the metal foil and the film-like substrate can be prevented without increasing the space area.

  The manufacturing method of the laminated board which concerns on this invention is the process of manufacturing simultaneously the double-sided copper foil laminated board which pinched | interposed polyimide films with adhesives, such as thermocompression bonding property or an epoxy resin, using copper foil simultaneously, for example. Can be applied to. Hereinafter, a laminated plate manufacturing system according to an embodiment of the present invention will be described with reference to the drawings. The copper foil may be a metal foil other than a copper foil such as an aluminum foil or a stainless steel foil, and the polyimide film may be a film-like substrate other than a polyimide film such as a liquid crystal polymer or an aramid film. .

  A laminated board manufacturing system 1 according to an embodiment of the present invention includes an unwinding device 2 and a double belt press device 3 as shown in FIG. The unwinding device 2 includes shafts 4a, 4c, 4d, and 4f on which a copper foil 5 prepared in the form of a roll-shaped long object is set, and a polyimide film 6 prepared in the form of a roll-shaped long object. Are provided with shafts 4b and 4e, and charging rolls 7a and 7b made of glass or nylon arranged in the conveyance path of the polyimide film 6, and the copper foil 5 and the polyimide film 6 unwound from each shaft are provided. It is supplied to the workpiece insertion port of the double belt press device 3. The double belt press device 3 is constituted by a known double belt press device 3, and a plurality of double belt press devices 3 are formed by subjecting the copper foil 5 and the polyimide film 6 supplied from each shaft of the unwinding device 2 to lamination molding (thermocompression treatment). A double-sided copper foil laminate is manufactured simultaneously. In addition, it is desirable to perform the said thermocompression-bonding process within the range of pressure 20-80 [bar], temperature 180-250 [degreeC], and time 1-10 [min].

  In the laminate manufacturing system 1 having such a configuration, the double-sided copper foil laminate (1) unwinds the copper foil 5 and the polyimide film 6 individually from each shaft in accordance with the line speed of the double belt press device 3, (2) One surface of the polyimide film 6 is brought into contact with the charging rolls 7a and 7b to bring one surface of the polyimide film 6 into contact with friction, and (3) the surface of the charged polyimide film 6 and the copper foil. 5 is preliminarily bonded to one side of the polyimide film 6 so as not to separate the copper foil 5 (see FIG. 2), and (4) the prebonded copper foil 5 and the polyimide film 6 are continuously bonded. It is manufactured by inserting between the continuous belts of the double belt press device 3 and (5) laminating the copper foil 5 and the polyimide film 6. In addition, the charging amount of the polyimide film 6 can be easily obtained by using the charging rolls 7 a and 7 b as a material in which the charging row is separated from the polyimide film 6.

  Thus, in the laminated board manufacturing system 1 according to the embodiment of the present invention, the copper foil 5 and the polyimide film 6 are brought into contact with each other by bringing the surface of the polyimide film 6 charged by the charging rolls 7a and 7b and the copper foil 5 into contact with each other. Since it is supplied to the double belt press device 3 after being pre-bonded so as not to be separated, interference between the copper foil 5 and the polyimide film 6 is prevented without increasing the space area around the transport path of the copper foil 5 and the polyimide film 6. be able to.

  In the above embodiment, the copper foil 5 is pre-adhered to one surface of the polyimide film 6 by bringing the charging rolls 7a and 7b into contact with one surface of the polyimide film 6. However, as shown in FIG. By further disposing charging rolls 7c and 7d that are in contact with the other surface of the film 6, the other surface of the polyimide film 6 is also charged so that the copper foil 5 is preliminarily bonded to both surfaces of the polyimide film 6. Good.

  When a plurality of double-sided copper foil laminates are manufactured simultaneously, the double-sided copper foil laminates may be preliminarily bonded with an adhesive sheet 11 interposed therebetween as shown in FIG. When the adhesive surfaces of the double-sided copper foil laminates are difficult to adhere to each other such as the copper foils 5, the adhesive sheet 11 is a resin that is easily charged by the charging rolls 7e and 7f or is easily charged with surface tension (details will be described later). It is desirable to use a sheet.

  In the present embodiment, the copper foil 5 and the polyimide film 6 are preliminarily bonded using electrostatic force. However, as shown in FIG. The liquid 22 (for example, water or alcohol) may be sprayed, and the copper foil 5 and the polyimide film 6 may be pre-bonded by the surface tension of the liquid 22. In addition, since the inside of the double belt press apparatus 3 is sufficiently high temperature, even if the liquid 22 is sprayed onto the polyimide film 6, the liquid evaporates during the laminate molding process.

  As mentioned above, although the embodiment to which the invention made by the present inventors was applied has been described, the present invention is not limited by the description and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on the above embodiments are all included in the scope of the present invention.

It is a schematic diagram which shows the structure of the manufacturing system of the laminated board used as embodiment of this invention. It is the elements on larger scale of the manufacturing system of the laminated board shown in FIG. It is a schematic diagram which shows the structure of the application example of the manufacturing system of the laminated board shown in FIG. It is a schematic diagram which shows the structure of the application example of the manufacturing system of the laminated board shown in FIG. It is a schematic diagram which shows the structure of the manufacturing system of the laminated board which becomes other embodiment of this invention.

Explanation of symbols

1: Laminate board manufacturing system 2: Unwinding device 3: Double belt press devices 4a, 4b, 4c, 4d, 4e, 4f: Shaft 5: Copper foil 6: Polyimide films 7a, 7b: Charging roll

Claims (2)

A laminate manufacturing method for continuously manufacturing a laminate in which a metal foil is bonded to a film substrate by laminating a metal foil and a film substrate using a double belt press,
A step of individually unwinding the metal foil and the film-shaped substrate from the roll-shaped metal foil and the film-shaped substrate, respectively, a step of pre-adhering the unrolled metal foil and the film-shaped substrate so as not to separate, A step of supplying the pre-bonded metal foil and the film-like substrate to a double belt press machine,
In the pre-adhering step, one surface and the other surface of the film-like substrate are charged, and a metal foil is brought into contact with one surface and the other surface of the charged film-like substrate. While pre-bonding the metal foil on both sides of the material, pre-bonding a plurality of sets of pre-bonded metal foil and film substrate,
In the step of supplying to the double belt press, the plurality of pre-adhered sets are continuously supplied to each other, and the metal foil and the film-like substrate are laminated and processed. Production method. The method for producing a laminated board according to claim 1, wherein when a plurality of sets of pre-bonded metal foil and film-like substrate are pre-bonded, an adhesive sheet is interposed between the sets. Manufacturing method.

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