JP2636976B2 - Laminated composite film and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated composite film in which a porous first film made of a metal is laminated with a second film made of the same or different material as the film, and a method for producing the same.

[0002]

2. Description of the Related Art Recently, the packaging field, the medical field,
Various polymer films and metal films are used in the field of electronic devices or the space industry. However, due to diversification of demands for films in the industrial field and enhancement of functions, there has been a problem that the physical properties and functions of the film itself cannot meet the demands.

[0003] For these reasons, compounding with various materials has been promoted. For example, a laminated composite film or the like has been developed in which a metal film (metal foil) is used as a reinforcing material, a conductive material, or a moisture-permeable material, and a polymer film is laminated thereon.

In the laminated composite film, a metal film is conventionally subjected to a corona treatment, and then a polymer film is laminated via an adhesive. However, since the general-purpose adhesive hardly adheres well to both the polymer film and the metal film, there is a problem that the adhesive strength between the respective films is reduced and peeling is likely to occur. Adhesives that adhere well to both polymer films and metal films have been developed, but are extremely expensive.

[0005] A laminated composite film is produced by depositing a thin metal film such as aluminum on a high heat-resistant polymer film (eg, a polyester film) by vacuum evaporation. However, such a method not only requires a large-scale vacuum vapor deposition apparatus, but also deposits a metal by a vapor deposition method. Therefore, thickening a metal thin film to the order of μm or more is restricted in terms of productivity and cost.

An object of the present invention is to provide a laminate having a structure in which a porous first film made of metal and a second film made of the same or different material from the film are bonded with high strength using a general-purpose adhesive. A composite film is provided. Another object of the present invention is to provide a method capable of easily and mass-producing the laminated composite film.

[0007]

The laminated composite film according to the present invention has 500 fine through holes / cm ^2. A porous first film made of a metal perforated in a large number and uniformly at the density described above, a second film laminated on one or both sides of the first film, and between the first and second films; An adhesive layer interposed and partially buried in a large number of through holes of the first film.

The first film may be any film as long as it can be formed into a film.
Foil, Al alloy foil such as Al-Mg, Cu foil if its alloy foil, soft iron foil, stainless steel foil, gold foil or Ti, Ta,
High melting point metal foils such as W can be used.

It is necessary that the fine through-hole formed in the first film has a diameter that allows the adhesive to enter and be buried. The diameter of such a through hole is 5 to 50 μm.
m, more preferably in the range of 10 to 30 μm.

Fine penetration perforated in the first film
The reason for limiting the hole density is that 500 holes / cm^Two Less than
In this case, the anchoring effect of the adhesive buried in the through hole is sufficient.
The second film with respect to the first film.
Because it will not be possible to adhere
You. The density of the through holes in such a first film is
Although it depends on the hole diameter, a maximum of 200
000 pieces / cm^Two Can be as high as this
Therefore, the density of the through holes in the first film is
Depending on the relationship with the hole diameter of the through hole and the material of the second film, etc.
500 pieces / cm^Two ~ 200,000 pieces / cm^Two In the range of
It is possible to choose at will.

As the second film, for example, a polymer film, a polymer foam film, a film made of woven or non-woven fabric, paper, foamed paper, ceramic film,
Other examples include a composite film in which an inorganic powder such as a silica powder, a carbon powder, and an alumina powder is mixed with a polymer material. Further, the second film is the first film.
A porous film made of the same metal as the film can be used. Examples of the polymer film include, for example, general-purpose polymer films such as polyethylene, polypropylene, polyvinyl chloride, polyester, fluororesin, polyamide, engineering plastic films such as polycarbonate and polyimide, and super-ethers such as polyetheretherketone and polyetherketone. An engineering plastic film, an elastomer film, or another heat-fusible resin film can be used. As the ceramic film, for example, an alumina film, a zirconia film, an aluminum nitride film, a carbon film and the like can be used. As the adhesive, various polymeric resin-based adhesives can be used. Such a laminated composite film is

A long metal film is passed between a first roll and a second roll made of a hard material having a large number of particles having Mohs hardness of 5 or more and having sharp corners. By adjusting the pressing force on the long metal film passing through the film so as to be uniform over the entire film surface in contact with each of the rolls, the sharp corners of a large number of particles on the surface of the first roll have the same length. 500 through holes / cm ² in fine metal film It is manufactured by a step of producing a porous first film made of metal by perforating a large number of holes at the above density, and a step of laminating a second film on one or both sides of the first film via an adhesive. .

The first roll has a structure in which a large number of particles having a Mohs hardness of 5 or more having sharp corners on the surface of a metal roll main body are electrodeposited or adhered with an organic or inorganic binder. Examples of the particles having a Mohs hardness of 5 or more include cemented carbide particles such as tungsten carbide, silicon carbide particles, boron carbide particles, sapphire particles, cubic boron nitride (CBN) particles, and natural or synthetic diamond particles. Can be mentioned. Especially,
Synthetic diamond particles having high hardness and strength are desirable. It is desirable to use particles having a particle size of 10 to 100 μm and a variation of the particle size of 5% or less. The large number of particles are provided with 500 through holes / c in a long metal film.
m ² From the viewpoint of forming at the above-mentioned density, it is desirable to make 50% or more adhere to the roll body surface.

As the second roll made of the hard material, for example, an iron roll, an iron-based alloy roll, an iron roll having a surface plated with Ni or Cr, or the like can be used.

As means for laminating the second film on the first film via an adhesive, an adhesive is applied to the first film, and then the second film is laminated on the adhesive and pressed. Alternatively, a method in which a second film to which an adhesive is applied in advance is overlapped on the first film such that the adhesive is located on the first film side and pressure-bonded may be adopted.

The laminated composite film is also produced by press-bonding or heat-pressing a second film excluding the metal film on one or both sides of the porous first film made of the metal, in addition to the above method. The second
Examples of the film include various polymer films described above, a ceramic green sheet in which ceramic fine particles are dispersed in an organic binder, a silica powder in a polymer material,
A composite film mixed with an inorganic powder such as a carbon powder and an alumina powder can be used. However, when a ceramic green sheet is used, baking is performed after the pressure bonding step. Still another laminated composite film according to the present invention has 500 fine non-through holes / cm ^2. A porous first film made of metal perforated in a large number and uniformly at the above density, a second film laminated on the non-through hole forming surface of the first film, and the first and second films And an adhesive layer partly buried in a large number of non-through holes of the first film.

The first film may be any film as long as it can be formed into a film.
Foil, Al alloy foil such as Al-Mg, Cu foil if its alloy foil, soft iron foil, stainless steel foil, gold foil or Ti, Ta,
High melting point metal foils such as W can be used.

It is necessary that the fine non-through holes formed in the first film have a diameter that allows the adhesive to enter and be buried. The hole diameter of such a non-through hole is 20 to
It is desirable that the thickness be in the range of 50 μm, more preferably 30 to 50 μm.

The reason for limiting the density of the fine non-through holes perforated in the first film is that 500 holes / cm ² If it is less than 2, the anchoring effect of the adhesive buried in the non-through hole cannot be sufficiently exerted, and the second film cannot be used with respect to the first film.
This is because the film cannot be bonded with high strength. The density of the non-through holes occupying the first film depends on the diameter of the holes, but the maximum density is 200,000 / cm ² by the method described later. Can be as high as For this reason, the density of the non-through holes in the first film is 500 holes / cm ² depending on the relationship with the hole diameter of the non-through holes and the material of the second film. ~ 200,000 pieces / cm
^Two Can be arbitrarily selected within the range.

As the second film, for example, a polymer film, a polymer foam film, a film made of woven or non-woven fabric, paper, foam paper, ceramic film,
Other examples include a composite film in which an inorganic powder such as a silica powder, a carbon powder, and an alumina powder is mixed with a polymer material. Further, the second film is the first film.
A porous film having many non-through holes made of the same metal as the film can be used. As the polymer film, for example, polyethylene, polypropylene,
General-purpose polymer films such as polyvinyl chloride, polyester, fluororesin and polyamide; engineering plastic films such as polycarbonate and polyimide;
Alternatively, a super-engineering plastic film such as polyetheretherketone or polyetherketone, an elastomer film, a heat-fusible resin film, or the like can be used. As the ceramic film, for example, an alumina film, a zirconia film, an aluminum nitride film, a carbon film and the like can be used. Such a laminated composite film is

A long metal film is passed between a first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners adhered to a surface thereof and a second roll having a surface made of a soft material. By adjusting the pressing force on the long metal film passing between the rolls so as to be uniform over the entire film surface in contact with each of the rolls, sharp corners of a large number of particles on the first roll surface are reduced. 500 holes / cm ² by passing through the long metal film A step of producing a porous first film made of a metal by perforating a large number and uniformly at the above density, and laminating a second film on the non-through hole forming surface of the first film via an adhesive; Process. The first roll has the same configuration as described above.

As the second roll having a surface made of a soft material, for example, a roll made of brass, aluminum, or copper, or a metal roll body having a surface coated with a polymer resin layer can be used. As the polymer resin, various resins can be used, particularly a urethane resin having a high buffering action on the long metal film,
Silicon rubber or the like is preferred.

[0023]

According to the present invention, the number of fine through holes is 500 / c.
m ² A porous first film made of a metal perforated in a large number and uniformly at the density described above, a second film laminated on one or both sides of the first film, and between the first and second films; An adhesive layer interposed and partially buried in the plurality of through holes of the first film, thereby anchoring at the adhesive layer portion buried in the plurality of through holes of the first film. By the effect, a laminated composite film in which the second film is bonded to the first film with high strength can be obtained. Further, when the second film is laminated on both sides of the first film via an adhesive layer, a part of the adhesive layer on both sides of the first film becomes the first film.
The adhesive layers on both sides of the first film are buried in a plurality of through holes of the film, and are bonded to each other through the buried adhesive portions. As a result, it is possible to obtain a laminated composite film having a three-layer structure in which the first film is used as an intermediate film and the second films are firmly bonded to both sides thereof. Accordingly, the first and second films made of metal (for example, a polymer film) can be bonded to each other with high strength without using a special adhesive having good adhesiveness. A laminated composite film that can be used for various applications can be obtained.

(1) By bonding a second film made of a polymer material to one or both sides of the first film, a high-strength laminated composite film using the first film as a reinforcing material can be obtained.

(2) By bonding a second film made of a heat-fusible resin to the first film, it has both conductivity by the first film and heat-fusibility by the heat-fusible resin film. A laminated composite film can be obtained.

(3) By bonding a second film made of a polymer foam material to the first film,
A laminated composite film having both conductivity by the film and cushion by the polymer foam film can be obtained.

(4) A second film made of a ceramic film (eg, alumina, zirconia, carbon) is
-Adhering to both sides of a first film made of an Al alloy such as an Mg alloy, has a lightweight and high-strength characteristic based on ceramics having excellent heat resistance, etc.
A laminated composite film suitable as a structural material for the marine industry can be obtained.

(5) A porous film made of the same metal as the first film is used as the second film, and a relatively thick adhesive layer is interposed between the first and second films and joined. It has a three-layer structure in which an adhesive layer (polymer layer) is interposed and a porous film made of metal on both sides, and is used for exterior parts of household appliances such as washing machines. It is possible to obtain a laminated composite film having good properties.

According to the method of manufacturing a laminated composite film, a long roll is formed between the first roll having a large number of particles having Mohs hardness of 5 or more having sharp corners adhered to the surface and the second roll made of a hard material. By passing the metal film, by adjusting the pressing force on the long metal film passing between the rolls so as to be uniform over the entire film surface in contact with each roll, the long metal without it intends little impairing the inherent characteristics films, the long metal film into fine through holes at sharp corners of a number of particles of the first roll surface 500 / cm ² A porous first film made of a metal having a large number of holes perforated at the above density can be produced.
Thereafter, by laminating a second film on one or both sides of the first film via an adhesive,
The films are bonded to each other with high strength without using a special adhesive having good adhesiveness to both the first film and the second film (for example, a polymer film) made of metal. An available laminated composite film can be mass-produced.

Further, according to the present invention, there are 500 fine non-through holes / cm ² A porous first film made of a metal perforated in a large number and uniformly at the density described above, a second film laminated on the non-through hole forming surface of the porous metal film, and the first and second films; An adhesive layer interposed between the films and partially buried in the plurality of non-through holes of the first film, whereby the adhesive buried in the plurality of non-through holes of the first film is provided. By the anchoring effect at the agent layer portion, a laminated composite film in which the second film is adhered to the first film with high strength can be obtained.
Accordingly, the first and second films made of metal (for example, a polymer film) can be bonded to each other with high strength without using a special adhesive having good adhesiveness. A laminated composite film that can be used for various applications can be obtained.

(A) By bonding a second film made of a polymer material to one or both surfaces of the first film, a high-strength laminated composite film using the first film as a reinforcing material can be obtained. Further, the first film made of a metal constituting such a laminated composite film has many non-through holes, and has excellent gas barrier properties, so that it can be used as a packaging material.

(B) By bonding a second film made of a polymer material (particularly, a heat-fusible resin) to the first film, the conductivity of the first film and the heat of the heat-fusible resin film are increased. It is possible to obtain a laminated composite film having both the fusibility. In particular, since the first film has a non-perforated hole, the conductivity of the first film is improved as compared with the case where a porous film made of a metal having a large number of through holes is used. It is possible to increase. Further, such a laminated composite film can be used as an electromagnetic shielding material by being attached to a wall surface of a computer room with the heat-fusible film.

(C) bonding the second film made of a polymer foam material to the first film to form the first film;
A laminated composite film having both conductivity by the film and cushion by the polymer foam film can be obtained.

According to the method for producing a laminated composite film, a large number of particles having Mohs hardness of 5 or more having sharp corners are provided between a first roll having a surface attached thereto and a second roll having a surface made of a soft material. By passing the long metal film, by adjusting the pressing force on the long metal film passing between the rolls so as to be uniform over the entire film surface contacting each roll, the length of the long metal film The first characteristic without substantially impairing the original characteristics of the shaku metal film.
Sharp corners of a large number of particles on the roll surface were cut into the long metal film to form 500 non-through holes / cm ^2. A large number of uniform holes can be formed at the above density, and a porous first film made of metal can be produced. Thereafter, by laminating a second film on one or both sides of the first film via an adhesive, good adhesion to both the first film and the second film (for example, a polymer film) made of metal is obtained. The laminated composite films can be mass-produced by bonding these films with a high strength without using a special adhesive having the laminated composite films, which can be used for the above-mentioned various applications.

[0035]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view showing a main part of a manufacturing apparatus for a laminated composite film used in this embodiment, FIG. 2 is a side view showing a main part of the manufacturing apparatus shown in FIG. 1, and FIG. −III
FIG. 4 is a front view showing the laminating mechanism.

In the figure, reference numeral 101 denotes a bed. A table 102 is provided on the upper surface of the bed 101 except for the vicinity of the right end. On the table 102, two key-shaped frames 103 are installed at predetermined intervals in the width direction of the table 102. The frame 103 includes a lower plate 103a, a side plate 103b, and an upper plate 1
03c. Near the center of the side plate 103b of each frame 103, a first
Boxes 105 are respectively fixed. A first roll 106 is arranged between the frames 103. As shown in FIG. 2, the first roll 106 includes a number of particles (for example, synthetic diamond particles) 10 having a particle diameter of 70 to 85 μm and having sharp corners and a Mohs hardness of 5 or more.
7 comprises an iron roll body 108 electrodeposited on the surface thereof at an area ratio of 70% or more, and shafts 109 penetrating the center of the body 108 and projecting from both end faces of the body 108. Both protruding ends of the shaft 109 are respectively supported by bearings 104 in the first box 105. One end side (for example, left end side) of the first roll 106
The shaft 109 passes through the box 105, and a gear 111 that meshes with a gear of a drive shaft of a motor (not shown) is mounted on a protruding portion of the shaft 109. Therefore, the first roll 106 is driven by the motor.
Is rotated, for example, clockwise.
A protruding portion of the shaft 109 located between the gear 111 and the left side surface of the box 105 includes a gear 110
Is mounted on the shaft.

Rails 112 and 113 are formed on the side plate 103b of each frame 103 located below and above the first box 105, respectively.
As shown in FIG. 3, a slider 114 (the other slider is not shown) is arranged on each of the lower rails 112 so as to be vertically movable. Each of the sliders 11
4, second boxes 116 each having a built-in bearing 115 are fixed, and can move up and down along the rails 112. A second roll 117 is arranged between the frames 103 so as to face each other so as to be located below the first roll 106. The second roll 117 includes a roll main body 118 made of, for example, stainless steel and having a hard surface, and a shaft 119 that penetrates the center of the main body 118 and protrudes from both end surfaces of the main body 118. Both protruding ends of the shaft 119 are supported by bearings 115 in the second box 116, respectively. One end side (for example, left end side) of the second roll 117
A shaft 119 portion projects through the second box 116, and a gear 120 meshing with the gear 110 of the shaft 109 of the first roll 106 is mounted on the projecting portion of the shaft 119. . Therefore, the second roll 117 is connected to the second box 116 and the slider 1.
By means of 14, it is arranged movably up and down along the rail 112. Further, the first roll 106 is driven by the motor.
By rotating the shaft 109 clockwise, the shaft 119 having the gear 120 meshing with the gear 110 of the shaft 109 rotates counterclockwise, and as a result, the second roll 117 rotates counterclockwise. It is designed to rotate clockwise.

As shown in FIG. 3, a slider 121 (the other slider is not shown) is disposed on each of the upper rails 113 so as to be vertically movable. A third box 123 containing a bearing 122 is fixed to each of the sliders 121 so as to be able to move up and down along the rail 113. In addition, a third roll 124 is provided between the respective frames 103 by the first roll 10.
6 so as to face each other. The third roll 124 is, for example, an iron roll body 1 having a surface coated with a polymer resin layer 125 such as urethane resin.
26 and the main body 12 through the center of the main body 126.
6 and a shaft 127 protruding from both end surfaces. Both protruding ends of the shaft 127 are supported by bearings 122 in the third box 123, respectively. The shaft 12 on one end side (for example, the left end side) of the third roll 124
The seven parts protrude through the third box 123, and a gear 128 that meshes with the gear 110 of the shaft 109 of the first roll 106 is mounted on the protruding part of the shaft 127. Therefore, the third roll 124 is arranged to be vertically movable along the rail 113 by the third box 123 and the slider 121. Further, the shaft 109 of the first roll 106 is driven by the motor.
By rotating clockwise, the shaft 109 is rotated.
The shaft 127 having the gear 128 meshing with the gear 110 rotates counterclockwise, and consequently the third gear
The roll 124 rotates counterclockwise.

The two frames 103, the two first boxes 105, the first roll 106, the two sliders 112 and 113, the two second boxes 116, the second roll 117, and the two The three boxes 123 and the third roll 124 constitute a perforation unit 129.

On the lower wall of the two second boxes 116, a cylindrical body 13 having upper and lower flanges 130 and 131 is provided.
2 are arranged respectively. Each said cylindrical body 132,
As shown in FIG.
The box 116 is fixed to the second box 116 by a plurality of screws 133 screwed to the lower wall. At the lower flange 131 of each of the cylindrical bodies 132, a disk 135 having a hole 134 at the center is arranged, respectively.
Each of the disks 135 is fixed to each of the disks 135 by a plurality of screws 136 screwed to the lower flange 131. In each of the cylindrical bodies 132, a coil spring 137 is housed so as to apply an elastic force in a vertical direction. A rod 139 having a pressure sensor 138 attached to the upper end thereof is inserted into each of the cylindrical bodies 132 through a hole 134 of the disk 135.
Each of the pressure sensors 138 is in contact with the lower end of each of the coil springs 137, and can detect a pressing force on the coil spring 137 due to the rise of each of the rods 139. A disc-shaped guide 140 for smoothly moving the rod 139 up and down is attached to the rod 139 below each of the sensors 138. The lower end of each rod 139 has a ball screw 14
1 are respectively inserted. Each ball screw 1
Reference numerals 41 penetrate the lower plate 103a of the frame 103 and project into recesses (not shown) of the bed 102, respectively. In the recessed portions, casings (the other casing is not shown) 142 each containing a threaded engagement plate (not shown) are provided. The lower end protrusion of the ball screw 141 is screwed to the engagement plate in each of the casings 142. In each of the casings 142, a worm shaft (not shown) that engages with a lower end protruding portion of the ball screw 141 is inserted from the horizontal direction, and a handle is provided at one end of each of the worm shafts. (Not shown) 143 are provided. Therefore, by rotating the handle 143, the ball screw 141 that engages with the worm shaft of the handle 143 rotates, and the rod 139 into which the ball screw 141 is inserted rises (or descends). ing. In this case, when the rod 139 is lowered to a certain distance or more, the disk-shaped guide 140 attached to the rod 139 comes into contact with the inner surface of the disk 135 below the cylindrical body 132 to lower the cylindrical body 132 itself. Let it. Therefore, the second box 116 fixed to the upper end of the cylindrical body 132 is lowered by the slider 114 along the lower part 112 of the rail.

The two cylindrical bodies 132, the two disks 135, the two coil springs 137, the two pressure sensors 138, the two rods 139, the two disk guides 140, and the two ball screws 14
1. A first pressure for adjusting a pressing force on a film passing between the first and second rolls 106 and 117 by the two casings 142, the two worm shafts (not shown), and the two handles 143. The adjusting means 144 is included.

On the upper wall of the two third boxes 123, a cylindrical body 14 having upper and lower flanges 145 and 146 is provided.
7 are arranged respectively. Each said cylindrical body 147,
As shown in FIG.
The box 123 is fixed to the third box 123 by a plurality of screws 148 screwed to the upper wall. Disks 150 each having a hole 149 in the center are arranged on the upper flange 145 of each of the cylindrical bodies 147, respectively.
The disks 150 are respectively fixed by a plurality of screws 151 screwed from the disks 150 to the upper flange 145. In each of the cylindrical bodies 147, a coil spring 152 is housed so as to apply an elastic force in a vertical direction, and a lower end of each of the coil springs 152 is in contact with an upper wall of the third box 123, respectively. I have. In each of the cylindrical bodies 147, a rod 154 having a pressure sensor 153 attached to a lower end thereof is provided on the disk 1 respectively.
It is inserted through 50 holes 149. Each of the pressure sensors 153 is in contact with the upper end of each of the coil springs 152, and the coil springs 152
Can be detected. A disc-shaped guide 155 for smoothly moving the rod 154 up and down is provided on the rod 154 above each of the sensors 153.
Are attached. A ball screw 156 is inserted into the upper end of each rod 154. Each of the ball screws 156 passes through the upper plate 103c of the frame 103, and
Projecting upwards. On the upper surface of each of the upper plates 103c, there is provided a casing (the other casing is not shown) 157 which incorporates a threaded engaging plate (not shown). An upper end protruding portion of the ball screw 156 is screwed to the engagement plate in each of the casings 157. In each of the casings 157, a worm shaft (not shown) that engages with an upper end protruding portion of the ball screw 156 is inserted from the horizontal direction, and a handle is provided at one end of each of the worm shafts. (Not shown) 158 are provided. Accordingly, by rotating the handle 158, the ball screw 156 that engages with the worm shaft of the handle 158 rotates, and the ball screw 15
6. Lower (or ascend) the rod 154 with the inserted 6
It is supposed to. In this case, when the rod 154 is raised over a certain distance, the disc-shaped guide 155 attached to the rod 154 causes the cylindrical body 147 to move.
The cylindrical body 147 itself is raised by contacting the inner surface of the upper disk 150. For this reason, the third box 123 fixed to the lower end of the cylindrical body 147 is
1 raises along the rail 113.

The two cylinders 147, the two disks 150, the two coil springs 152, the two pressure sensors 153, the two rods 154, the two disk guides 155, and the two ball screws Fifteen
6. The second pressure for adjusting the pressing force on the film passing between the first and third rolls 106 and 124 by the two casings 157, the two worm shafts (not shown), and the two handles 158. The adjusting means 159 is constituted.

In front of the perforating unit 129, a winding roll (not shown) of a long metal film is arranged.
The long metal film 160 of the winding roll is supplied between the first and second rolls 106 and 117 and between the first and third rolls 106 and 124 of the unit 129 via two feed rolls 161. Is done. Unit 1
In the subsequent stage of 29, a drilling dust removing means 162 is arranged. The drilling debris removing means 162 is provided on the table 102.
A container 163 installed on the top and containing pure water, and an ultrasonic generating member (not shown) for applying ultrasonic waves to the pure water
It is composed of The first and third rolls 106 are provided between the unit 129 and the perforated debris removing means 162, in the container 163, and at a subsequent stage of the container 163.
Five feed rolls 161 for transporting the long film that has passed between 124 are arranged respectively. In addition, a contact roll 164 is arranged on each of the two feed rolls 161 located at the front and rear stages of the container 163. A plurality of hot-air jet members (not shown) for drying the film that has passed between the feed roll 161 and the abutment roll 164 are disposed at the subsequent stage of the perforated dust removing means 162.

A laminating mechanism 165 shown in FIG. 4 is disposed downstream of the hot air jet member. The laminating mechanism 165 includes first and second tanks 167 and 168 containing an adhesive 166. In the first tank 167, three application rolls 169 are vertically arranged. A part of the lowermost application roll 169 is immersed in the adhesive 166 in the first tank 167. The joining roll 170 is arranged to face the uppermost application roll 169. A long second film 171 is supplied between the application roll 169 and the joining roll 170. A contact roll 172 is disposed opposite to the joining roll 170. These joining roll 170 and contact roll 172
In between, the porous first film 173 made of the perforated metal and the second film 171 coated with an adhesive are supplied. In the second tank 168, two application rolls 174 are arranged in a vertical direction. A part of the lower application roll 173 is immersed in the adhesive 166 in the second tank 168. Upper application roll 17
4, a joining roll 175 is disposed to face the joining roll 175. Another long second film 176 is supplied between the application roll 174 and the joining roll 175. A contact roll 177 is opposed to the joining roll 175. Between the joining roll 175 and the contact roll 177, a laminated film 179 in which the long second film 171 is adhered to the long first film 173 via an adhesive through a feed roll 178, and an adhesive is applied. The supplied second film 176 is supplied. In addition, the contact roll 177 is arranged so as to be able to freely contact and separate from the joining roll 175, and in a mode in which the second film 176 is not used, the contact roll 177 is connected to the joining roll 1.
Moved far enough from 75. A winding roll (not shown) is disposed downstream of the laminating mechanism 165. Example 1

The porous film obtained by piercing a long film made of an Al—Mg alloy between the first and second rolls 106 and 117 of the piercing unit 129 in the apparatus for manufacturing a laminated composite film having the above-described configuration. A method of manufacturing a laminated composite film in which a second film made of polyvinyl chloride (PVC) is adhered to one surface of the first film will be described with reference to FIGS.

First, by rotating the two handles 143 of the first pressure adjusting means 144 in, for example, a counterclockwise direction, each second box 116 of the drilling unit 129 connected to the upper end of each cylindrical body 132 is moved by a slider. 114
To move down along each rail 112 of each frame 103 so that the bearing 11 in each second box 116
5 is separated from the first roll 106 on the second roll 117 at a sufficient interval. Further, by rotating the two handles 158 of the second pressure adjusting means 159, for example, clockwise, each third box 123 connected to the lower end of each cylindrical body 147 is moved to the slider 121.
To raise each bearing along each rail 113 of each frame 103, so that the bearing 12 in each third box 123
The third roll 124 pivotally supported by 2 is separated from the first roll 106 thereunder at a sufficient distance. In such a state, a 20 μm-thick Al
A long film 160 made of a Mg-based Al alloy is transferred between the first and second rolls 106 and 117 of the unit 129 and between the first and third rolls 106 and 124 of the unit 129 by two feed rolls 161. After passing
The four feed rolls 161 are used to remove the perforated debris.
2 through a container 163, a plurality of hot-air jet members (not shown), a bonding roll 170 of the laminating mechanism 165, a passing roll 172, a feed roll 178, and a winding roll (177). The front end of the long film 160 is wound around a not shown).

When the long film 160 is passed between the first and third rolls 106 and 124 in the above step, as shown in FIG.
60 does not contact the surface of the first roll 106. In the first embodiment, since the second film is laminated on only one side of the first film, the laminating mechanism 165 is used.
A second film 171 made of PVC having a thickness of 30 μm is passed between the uppermost application roll 168 disposed in the first tank 167 and the bonding roll 170, and is applied to the long film, and is stacked between the roll 172 and the bonding roll 170. In this state, the leading end of the long film 160 is wound around a take-up roll (not shown) through the feed roll 178 and the contact roll 177. In this case, the contact roll 177 is sufficiently separated from the joining roll 175 disposed above the second tank 166.

Next, after winding the leading end of the long film 160 on a take-up roll, the first pressure adjusting means 14
By rotating the two handles 143 in a clockwise direction, the second handle 143 connected to the upper end of each cylindrical body 132 is rotated.
Box 116 is moved by slider 114 to each frame 1
03 are respectively raised along the rails 112 of the second box 116, and the second
The roll 117 is brought into contact with the first roll 106 thereon. Further, by rotating the respective handles 143 in the same direction, the respective coil springs 137 thereon are compressed by the respective sensors 138 at the upper ends of the respective rods 139. By the compression of each of the coil springs 137, a pressing force is applied to the lower wall of each of the second boxes 116, and the second roll 11 supported by a bearing 115 in the second box 116 is supported.
7 and the pressing force between the first roll 106 increase. At this time, the second roll 11 is detected by the pressure sensors 138.
By detecting the pressing force (compression force) between the first and second rolls 7 and 106 and adjusting the rotation of each handle 143 in the forward and reverse directions, the second and first rolls 117 and 106 are adjusted.
The pressing force on the long film 160 located therebetween is adjusted. By adjusting the pressing of the unit 129 by the first pressure adjusting means 144, the film 16 in contact with the second and first rolls 117 and 106 can be adjusted.
A uniform pressing force is applied to the entire zero plane, and preparation for the punching operation is completed.

After the preparation for the drilling operation is completed, ultrasonic waves are applied to the pure water contained in the container 163 of the drilling dust removing means 162 by an ultrasonic generating member (not shown). The first tank 167 of the laminating mechanism 165 contains a polyisocyanate solvent type polyurethane adhesive 166 manufactured by Nisso Corporation. Subsequently, by rotating the drive shaft of a motor (not shown) at the same time as rotating the winding roll, the rotation of the gear of the drive shaft and the gear 111 of the shaft 109 in the first roll 106 is transmitted by the first roll. 106 is rotated clockwise. When the first roll 106 rotates, the second roll 117 is rotated in a counterclockwise direction by the rotation transmission of the gear 110 of the shaft 109 and the gear 120 of the shaft 119 in the second roll 117. In this case, the third roll 12
Since the gears 4 are sufficiently separated from each other above the first roll 106, the gear 128 of the shaft 127 of the third roll 124 and the gear 110 of the shaft 109 of the first roll 106 are disengaged from each other. The three rolls 124 are not driven by the rotation of the motor and are free to rotate. By rotating the first and second rolls 106 and 117 in this manner, the long film 160 passing between the rolls 106 and 117 is perforated.

That is, as shown in FIG. 2, the first roll 106 has an iron roll body 108 on which a large number of synthetic diamond particles 107 having sharp corners are electrodeposited on the surface at an area ratio of 70% or more. The second roll 117 is provided with a roll body 118 having a hard surface such as stainless steel, for example. Further, the unit 1 by the first pressure adjusting means 144 may be used.
29, the first and second rolls 106,
A uniform pressing force is applied over the entire contact surface between the long film 160 and the rolls 106 and 117 passing through the space 117. For this reason, the long film 160 made of the Al alloy is used for the first and second rolls 106 and 117.
When passing through the gap, the sharp edges of the large number of synthetic diamond particles 107 on the surface of the first roll 106 uniformly pierce the Al alloy film in the width direction without substantially impairing the original characteristics. As a result, as shown in FIG.
2000 through-holes 180 with fine dimensions of 0 to 30 μm /
cm ² A porous first film 173 made of an Al alloy having a large number of holes and uniformly perforated is produced.

Next, the first film 173 perforated by the unit 129 is fed to five feed rolls 161.
And the two rolls 164 pass and convey into the container 163 of the perforated debris removing means 162. Since the perforation of the long film 160 by the unit 129 is mainly based on the friction of the first and second rolls 106 and 117, the first film 17 after the perforation processing is performed.
Drilling debris and the like are attached to the three surfaces. The first after the perforation process
The film 173 was passed through the container 163 of the perforated debris removing means 160 in which pure water was stored, and was attached to the first film 173 by applying ultrasonic waves to the pure water by an ultrasonic generating member (not shown). Rinse perforated debris. Subsequently, the first film 173 is passed through a plurality of hot air jet members (not shown) to volatilize and remove water on the surface.

Next, the first film 173 is conveyed to the laminating mechanism 165 and passes between the joining roll 170 and the contact roll 172, and at the same time, passes between the joining roll 170 and the application roll 169 to form the first tank 167.
30 μm thick P on which adhesive 166 is applied on one side
A long second film 171 made of VC is passed between the joining roll 170 and the contact roll 172. In this step, the first film 173 and the second film 171 coated with the adhesive are pressed by the joining roll 170 and the contact roll 172 to form the first and second films 17.
3, 171 are laminated via an adhesive layer. Then,
The laminated film 179 has a feed roll 178 and a contact roll 1
After being conveyed to a plurality of hot air jetting members (not shown) through 76 and dried, it is further taken up by a take-up roll.

According to the method of the first embodiment described above, FIG.
Is produced. That is, the reference numeral 173 in the figure denotes a through hole 180 of 20 to 30 μm.
000 pieces / cm ² A first film made of an Al alloy having a thickness of 20 μm and a large number of holes uniformly punched therein. On one surface of the first film 173, a 30 μm-thick second film made of PVC is provided via a polyurethane-based adhesive layer 181.
The film 171 is laminated. The adhesive layer 181
Is part of the large number of through holes 18 in the first film 173.
It is buried in 0.

The laminated composite film obtained by laminating a PVC film subjected to corona discharge treatment with the same adhesive as in Example 1 on the laminated composite film produced in Example 1 and an Al alloy film having no through-hole (Comparative Example) For 1), the adhesive strength between the films was measured. As a result, in the laminated composite film of Comparative Example 1, 800 g / 30 m
m, it was confirmed that the laminated composite film of Example 1 had an extremely high adhesive strength exceeding 1200 g / 30 mm. Example 2

The first film 173, which has been subjected to perforation and perforation debris washing and drying in the same manner as in Example 1, is transported to the laminating mechanism 165 and passed between the joining roll 170 and the contact roll 172. After passing between the joining roll 170 and the application roll 169, the first tank 16
The long second film 171 made of PVC having a thickness of 30 μm and having one side coated with the adhesive 166 in 7 is passed between the joining roll 170 and the contact roll 172. In this step, the first film 173 and the second film 171 coated with the adhesive are pressed by the joining roll 170 and the contact roll 172, and the first and second films 173 and 171 are bonded to the adhesive layer. Are laminated via
Subsequently, the laminated film 179 is passed between the joining roll 175 and the contact roll 177 through the feed roll 178, and at the same time, the joining roll 175 and the application roll 174 are passed.
Between the urethane-based adhesive 1 in the second tank 168
Another long second film 176 made of PVC having a thickness of 30 μm and coated on one side is bonded to the joining roll 175.
And between the contact rolls 177. In this step, the laminated film 179 and the second film 176 coated with the adhesive are bonded to the joining roll 175 and the contact roll 1.
Pressed at 77, the films 179 and 176 are laminated via an adhesive layer. Then, after drying with a plurality of hot air jetting members (not shown), it is further wound up on a winding roll.

According to the method of Embodiment 2 as described above, FIG.
Is produced. That is, the reference numeral 173 in the figure denotes a through hole 180 of 20 to 30 μm.
000 pieces / cm ² A first film made of an Al alloy having a thickness of 20 μm and a large number of holes uniformly punched at a density of 1 μm. Adhesive layers 181, 18 are provided on both sides of the first film 173.
2, second films 171 and 176 each having a thickness of 30 μm and made of PVC are laminated. Part of the adhesive layers 181 and 182 are embedded in a large number of through holes 180 of the first film 173 and are connected to each other in the through holes.

For the laminated composite film produced in Example 2, the adhesive strength of the second film made of PVC on both sides to the first film made of the intermediate Al alloy was measured. As a result, it was confirmed that the laminated composite film of Example 2 had higher adhesive strength than the laminated composite film of Example 1 exceeding 1200 g / 30 mm. Example 3

A 2 prepared by the same method as in Example 1
2000 through holes / cm ² with fine dimensions of 0 to 30 μm
Acrylic resin solvent (methylene dichloride) type adhesive (trade name: Acrylic Sunday) on both surfaces of a porous first film made of copper which is perforated in a large number and uniformly at a density of 1mm thick acrylic plate (2nd
Films) were each laminated to produce a laminated composite film.

The laminated composite film of Comparative Example 3 (Comparative Example 3) was prepared by laminating an acrylic plate on both sides of the laminated composite film of Example 3 and the copper film having no through holes via an adhesive in the same manner as in Example 3. The adhesive strength of the acrylic plates on both sides to the film consisting of was measured. As a result, in the laminated composite film of Comparative Example 3, 200 g / 30 m
It was confirmed that the laminated composite film of Example 3 had an extremely high adhesive strength of 2800 g / 30 mm, while the composite composite film was hardly adhered. Example 4

A 2 prepared by the same method as in Example 1
2000 through holes / cm ² with fine dimensions of 0 to 30 μm
Aron ceramics (adhesive) manufactured by Toa Gosei Chemical Co., Ltd. was uniformly applied to both surfaces of a porous first film made of copper, which was perforated with a large number of holes uniformly. In addition, thickness 1m
The above-mentioned Aron ceramics was uniformly applied to one side of an alumina ceramics sheet of m. Subsequently, the alumina ceramic sheets were adhered to both surfaces of the first film so that the adhesive of the sheets was located on the first film side, and they were lightly pressed and air-dried for 8 hours. Then, after dehydrating by heating at about 80 ° C. for 1 hour,
The adhesive was cured by heating at a temperature of not less than ℃, and then allowed to cool naturally to produce a laminated composite film.

The laminated composite film produced in Example 4 and a laminated composite film (Comparative Example 4) in which an alumina ceramic sheet was adhered to both surfaces of a copper film having no through holes by the same method as in Example 4
The adhesive strength of the alumina ceramic sheet to the copper film was measured. As a result, the laminated composite film of Comparative Example 4 was hardly adhered, whereas the laminated composite film of Example 4 was 100 kg / cm ^2. It was confirmed that it had an extremely high adhesive strength. Example 5

A long film made of an Al—Mg alloy was perforated between the first and third rolls 106 and 124 of the perforating unit 129 in the apparatus for manufacturing a laminated composite film having the above-described configuration, and the obtained porous material was obtained. A method of manufacturing a laminated composite film in which a second film made of polyester is adhered to one surface of a first film will be described with reference to FIGS.

First, by rotating the two handles 143 of the first pressure adjusting means 144 in, for example, a counterclockwise direction in the same manner as in the first embodiment, the second roll 117 is sufficiently separated from the first roll 106 thereon. Two handles 15 of the second pressure adjusting means 159
8 is rotated clockwise, for example,
The roll 124 is separated from the first roll 106 thereunder at a sufficient interval, and the leading end of a long film 160 made of an Al—Mg-based alloy having a thickness of 20 μm from a winding roll (not shown) is used as an example. Each member is passed through and wound on a take-up roll (not shown) in the same manner as in 1. When the long film 160 is passed between the first and second rolls 106 and 117, as shown in FIG.
60 does not contact the surface of the first roll 106.

Next, after winding the leading end of the long film 160 on a take-up roll, the second pressure adjusting means 15
9 by rotating the two handles 158 in the counterclockwise direction, the third boxes 123 connected to the lower ends of the respective cylindrical bodies 147 are respectively lowered by the sliders 121 along the respective rails 113 of the respective frames 103, The third roll 124 supported by the bearing 122 in each of the third boxes 123 is brought into contact with the first roll 106 thereunder. Further, by rotating the respective handles 158 in the same direction, the respective coil springs 152 thereunder are compressed by the respective sensors 152 at the lower ends of the respective rods 154. By the compression of the coil springs 152, a pressing force is applied to the upper wall of each of the third boxes 124, and the third rolls 12 supported by bearings 122 in the third boxes 123 are supported.
4 and the pressing force between the first roll 106 increase. At this time, the third roll 12 is detected by the pressure sensors 152.
By detecting the pressing force (compressive force) between the first and second rolls 4 and 106 and adjusting the rotation of each handle 158 in the forward and reverse directions, the third and first rolls 124 and 106 are adjusted.
The pressing force on the long film 160 located therebetween is adjusted. Due to the adjustment of the pressure applied to the unit 129 by the second pressure adjusting means 159, uniform pressing is performed over the entire width direction of the long film 160 located between the third and first rolls 124 and 106. The pressure is applied and the preparation for the drilling operation is completed.

After the preparation for the drilling operation is completed, ultrasonic waves are applied to the pure water contained in the container 163 of the drilling debris removing means 162 by an ultrasonic generating member (not shown). Further, the same urethane adhesive 166 as in the first embodiment is stored in the first tank 167 of the laminating mechanism 165. Then,
By rotating the drive shaft of a motor (not shown) at the same time as rotating the take-up roll, the gear of the drive shaft and the gear 11 of the shaft 109 of the first roll 106 are rotated.
By the rotation transmission of 1, the first roll 106 is rotated clockwise. When the first roll 106 rotates,
The rotation of the gear 110 on the shaft 109 and the gear 128 on the shaft 127 of the third roll 124 causes the third roll 124 to rotate counterclockwise. in this case,
Since the second roll 117 is sufficiently spaced above the first roll 106, the second roll 117
Gear 120 of the shaft 119 and the first roll 106
Is disengaged from the gear 110 of the shaft 109, and the second roll 117 is not driven by the rotation of the motor, and rotates freely. By rotating the first and third rolls 106 and 124 in this manner, the long film 160 passing between these rolls 106 and 124 is rotated.
Is perforated.

That is, as shown in FIG. 2, the first roll 106 has an iron roll main body 108 on which a large number of synthetic diamond particles 107 having sharp corners are electrodeposited on the surface at an area ratio of 70% or more. The third roll 124 has a structure having a roll body 126 whose surface is coated with a polymer resin layer 125 such as a urethane resin. Further, by adjusting the pressing of the unit 129 by the second pressure adjusting means 159,
A uniform pressing force is applied over the entire contact surface between the long film 160 and the rolls 106 and 124 passing between the first and third rolls 106 and 124. For this reason,
The long film 160 made of the Al alloy is the first film,
When passing between the third rolls 106 and 124, the large number of synthetic diamond particles 10 on the surface of the first roll 106
7, the pressing force on the film 160 due to the sharp corners is reduced by the polymer resin layer 125 and bites into the film 160.
The non-through holes are formed uniformly without substantially impairing the original properties of the alloy film. As a result, as shown in FIG.
2000 / cm ² non-through holes 183 with fine dimensions of 0 to 40 μm A porous first film 173 made of an Al alloy having a large number of holes and uniformly perforated is produced.

Next, the first film 173 perforated by the unit 129 is fed to five feed rolls 161.
And the two rolls 164 pass and convey into the container 163 of the perforated debris removing means 162. Since the perforation of the long film 160 by the unit 129 is mainly based on the friction of the first and second rolls 106 and 117, the first film 17 after the perforation processing is performed.
Drilling debris and the like are attached to the three surfaces. The first after the perforation process
The film 173 was passed through the container 163 of the perforated debris removing means 160 in which pure water was stored, and was attached to the first film 173 by applying ultrasonic waves to the pure water by an ultrasonic generating member (not shown). Rinse perforated debris. Subsequently, the first film 173 is passed through a plurality of hot air jet members (not shown) to volatilize and remove water on the surface.

Next, the first film 173 is conveyed to the laminating mechanism 165, passes between the joining roll 170 and the contact roll 172, and at the same time, passes between the joining roll 170 and the application roll 169 to form the first tank 167.
The long second film 171 made of polyester having a thickness of 12 μm and having the adhesive 166 applied on one side thereof is passed between the joining roll 170 and the contact roll 172. By this step, the first film 173 and the film 17
3 is pressed by the joining roll 170 and the contact roll 172 with the second film 171 disposed on the non-through hole forming surface side via an adhesive, and the films 173 and 17 are pressed.
1 are laminated via an adhesive layer. Subsequently, after the laminated film 179 is conveyed to a plurality of hot air jet members (not shown) through the feed roll 178 and the contact roll 176 and dried, it is further taken up by a take-up roll.

According to the method of the fifth embodiment described above, FIG.
A laminated composite film having the structure shown in FIG. 1 is manufactured. That is, 173 in the figure indicates 2,000 non-through holes 183 of 30 to 40 μm / cm ^2. A first film made of an Al alloy having a thickness of 20 μm and a large number of holes uniformly punched therein.
On the surface of the first film 173 where the non-through holes 183 are formed,
Thickness 12 made of polyester via adhesive layer 184
A second film 171 of μm is laminated. A part of the adhesive layer 184 is buried in the many non-through holes 183 of the first film 173.

A laminated composite film obtained by laminating a 12 μm-thick polyester film subjected to corona discharge treatment with a urethane-based adhesive on a laminated composite film produced in Example 5 and an Al alloy film having no through-hole (Comparative Example) For 5), the adhesive strength between the films was measured. As a result, in the laminated composite film of Comparative Example 5, 100
g / 30 mm and almost no adhesion, whereas the laminated composite film of Example 5 had an extremely high adhesive strength of 800 g / 30 mm.

In the first to fifth embodiments, an Al-Mg alloy or copper is used as the first film. However, the same as in the first to fifth embodiments can be used even if a film made of another metal such as brass foil is used. A laminated composite film having excellent adhesion can be obtained.

[0074]

As described in detail above, according to the present invention, a film made of the same or different material from the above-mentioned film is adhered to a film made of various metals with high strength, and the metal film is reinforced with a reinforcing material. The present invention can provide a laminated composite film useful as a conductive material in the fields of packaging, clothing, electronic equipment, the space industry or the marine industry, and a method for easily and mass-producing such a laminated composite film.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of an apparatus for manufacturing a laminated composite film used in an embodiment of the present invention.

FIG. 2 is a side view showing a main part of the manufacturing apparatus of FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a schematic view showing a laminating mechanism incorporated at a subsequent stage of the apparatus.

FIG. 5 is a front view for explaining the manufacturing process of the first embodiment.

FIG. 6 is a front view for explaining the manufacturing process of the fifth embodiment.

FIG. 7 is a cross-sectional view illustrating a first film manufactured according to the first embodiment.

FIG. 8 is a sectional view showing a laminated composite film manufactured according to Example 1.

FIG. 9 is a cross-sectional view showing a laminated composite film manufactured according to Example 2.

FIG. 10 is a cross-sectional view illustrating a first film manufactured from Example 5.

FIG. 11 is a sectional view showing a laminated composite film manufactured according to Example 5.

[Description of Signs] 101: bed, 102: table, 103: frame, 105: first box, 106: first roll, 11
6 ... second box, 117 ... second roll, 123 ... third
Box, 124: Third roll, 129: Perforating unit, 132, 147: Cylindrical body, 137, 152: Coil spring, 151, 143, 158, 175: Handle, 1
44, 159: Pressure adjusting means, 160: Long film, 162: Perforated debris removing means, 166: Adhesive, 16
7, 168 ... tank, 171, 176 ... second film, 17
3 ... first film, 180 ... through hole, 181, 182,
184: adhesive layer, 183: non-through hole.

Claims (2)

(57) [Claims] 1. A porous first film made of a metal in which a large number of fine non-through holes are uniformly and perforated at a density of 500 or more / cm ² or more, and a non-through hole forming surface of the porous metal film. And an adhesive layer interposed between the first and second films and partially buried in a number of non-through holes of the first film. The laminated composite film characterized by the above. 2. A long metal film is passed between a first roll having a large number of particles having Mohs hardness of 5 or more having sharp corners adhered to a surface thereof and a second roll having a surface made of a soft material, The sharp angle of the large number of particles on the first roll surface is adjusted by adjusting the pressing force on the long metal film passing between the rolls so as to be uniform over the entire film surface in contact with the rolls. Part into the long metal film to form 500 holes / cm ²
A step of producing a porous first film made of metal by piercing a large number of holes uniformly at the above density; and a step of laminating a second film on the non-through hole forming surface of the first film via an adhesive. The method for producing a laminated composite film according to claim 1, comprising: