JPH0538788A - Laminated composite film and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide a laminated composite film, in which a film composed of a material of a different kind to a film is bonded with the film consisting of various polymers with high strength. CONSTITUTION:A laminated composite film has a porous first film 173, through which a large number of fine through-holes are bored uniformly in density of 500number/cm<2> or more and which is made up of a polymer, second films 171 laminated on one surface or both surfaces of the first film 173 and adhesives layers 181 interposed among the first and second films 173, 171 and partially buried in a large number of the through-holes 180 of the first film 173.

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 polymer 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, packaging field, medical field,
Various polymer films are used in the electronic device field or the space industry field. However, due to the diversification of demands for films in the industrial field and the enhancement of functions, there has been a problem that the physical properties and functions of the film alone cannot meet the demands.

Under these circumstances, compounding with various materials is being promoted. For example, a laminated composite film in which a general-purpose polymer film is laminated on a high-performance polymer film has been developed.

In the above-mentioned laminated composite film, each polymer film is conventionally subjected to corona treatment, and then one polymer film is laminated with the other polymer film via an adhesive. However, since the general-purpose adhesive is difficult to adhere well to both different types of polymer films, there is a problem that the adhesive strength between the films becomes low and peeling easily occurs.

In addition, a laminated composite film is manufactured by vapor-depositing a metal thin film such as aluminum on a high heat-resistant polymer film (for example, polyester film) by vacuum vapor deposition. However, such a method not only requires a large-scale vacuum vapor deposition apparatus, but also deposits a metal by vapor deposition, so making the metal thin film thicker than μm is restricted in terms of productivity and cost.

An object of the present invention is to provide a laminated composite having a structure in which a porous first film made of a polymer is bonded to a second film made of a material different from the film with a general-purpose adhesive at high strength. It provides a film.

Another object of the present invention is to provide a method by which the above-mentioned laminated composite film can be produced simply and in mass production.

[0008]

A laminated composite film according to the present invention is a porous first film made of a polymer in which a large number of fine through holes are uniformly and perforated at a density of 500 holes / cm ² or more. And a second film laminated on one side or both sides of the first film, and an adhesive that is interposed between the first and second films and is partially buried in a large number of through holes of the first film. And an agent layer.

Examples of the first film include polyethylene, polypropylene, polyester, fluororesin,
A general-purpose polymer film such as polyamide, an engineering plastic film such as polycarbonate or polyimide, a super engineering plastic film such as polyetheretherketone or polyetherketone, an elastomer film, or another heat-fusible resin film can be used. ..

The fine through-holes formed in the first film need to have a diameter that allows the adhesive to enter and be buried therein. The diameter of the through hole is 5 to 50 μm.
m, more preferably 10 to 30 μm.

The reason for limiting the density of the fine through holes formed in the first film is that if the density is less than 500 holes / cm ² , the anchoring effect of the adhesive embedded in the through holes cannot be sufficiently exerted. This is because the second film cannot be bonded to the first film with high strength. The density of through holes in such a first film is
Depending on the pore size, a maximum of 200 can be obtained by the method described below.
It is possible to raise it to 000 pieces / cm ² . Therefore, the density of the through holes occupied in the first film to choose freely between 500 / cm ² ～200000 pieces / cm ² by material of relations and the second film with the pore size of the through hole Is possible.

The second film is, for example, a polymer film which is a different material from the first film, a polymer foam film, a film made of woven or non-woven fabric,
Examples thereof include paper, foamed paper, ceramics films, metal films, and other composite films obtained by mixing inorganic powders such as silica powder, carbon powder, and alumina powder with other polymer materials. As the polymer film, for example, polyethylene, polypropylene, polyester, fluororesin, general-purpose polymer film such as polyamide, polycarbonate, engineering plastic film such as polyimide, or polyether ether ketone, super engineering plastic film such as polyether ketone, Alternatively, an elastomer film or other heat-fusible resin film can be used. Examples of the metal film include Al foils, Al alloy foils such as Al-Mg, Cu foils, alloy foils thereof, soft iron foils, stainless steel foils, gold foils, and high melting point polymer foils such as Ti, Ta, and W. be able to. As the ceramic film, for example, an alumina film, a zirconia film, an aluminum nitride film, a carbon film or the like can be used.

As the adhesive, various types of polymer resin can be used.

Such a laminated composite film is a long polymer film between a first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners attached to the surface and a second roll having a smooth surface. Of the first roll surface by adjusting the pressing force to the long polymer film passing between the rolls to be uniform over the entire film surface in contact with the rolls. Producing a porous first film made of a polymer by perforating a plurality of fine through-holes at a density of 500 / cm ² or more in the long polymer film at sharp corners of a large number of particles; First
And a step of laminating a second film on one side or both sides of the 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 body are electrodeposited or attached by an organic or inorganic binder. Examples of the particles having a Mohs hardness of 5 or more include cemented carbide particles such as tung ten carbide, silicon carbide particles, boron carbide particles, sapphire particles, cubic boron nitride (CBN) particles, natural or synthetic diamond particles, and the like. Can be mentioned. In particular,
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 in particle size of 5% or less. The large number of particles has 500 through holes in a long polymer film.
From the viewpoint of forming with a density of cm ² or more, it is desirable to adhere 50% or more to the surface of the roll body.

As the second roll, for example, an iron roll, an iron-based alloy roll, an iron roll whose surface is plated with Ni or Cr, or a stainless roll can be used.

As a means for laminating the second film on the first film via an adhesive, a method of applying an adhesive on the first film, then stacking the second film on the adhesive and press-bonding the same. A method may be adopted in which a second film to which an adhesive has been applied in advance is superposed on the first film so that the adhesive is located on the side of the first film and pressure-bonded.

In addition to the above method, the laminated composite film may be obtained by pressing or thermocompressing a second film excluding a metal film and a ceramics film on one or both sides of a porous first film made of the polymer. Is also manufactured. As the second film, for example, a composite film obtained by mixing the above-mentioned various polymer film polymer materials with inorganic powder such as silica powder, carbon powder, and alumina powder can be used.

Another laminated composite film according to the present invention is
A porous first film made of a polymer in which a large number of fine unpenetrated pores are uniformly perforated at a density of 500 / cm ² or more; and a first film laminated on the surface of the first film where the unpenetrated pores are formed. Two films and an adhesive layer interposed between the first and second films and partly buried in a large number of non-penetrating holes of the first film. Is.

Examples of the first film include polyethylene, polypropylene, polyester, fluororesin,
A general-purpose polymer film such as polyamide, an engineering plastic film such as polycarbonate or polyimide, a super engineering plastic film such as polyetheretherketone or polyetherketone, an elastomer film, or another heat-fusible resin film can be used. ..

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

The reason why the density of the fine non-through holes perforated in the first film is limited is that if the density is less than 500 pieces / cm ² , the anchoring effect due to the adhesive embedded in the non-through holes cannot be sufficiently exhibited. , The second with respect to the first film
This is because the film cannot be bonded with high strength. The density of such non-through holes in the first film can be increased up to 200,000 holes / cm ² by the method described later, though it depends on the hole diameter. Therefore, the density of the non-through holes in the first film is 500 / cm ^{2 to} 200,000 / cm ² depending on the relationship with the hole diameter of the non-through holes and the material of the second film.
It can be arbitrarily selected within the range of ² .

The second film is, for example, a polymer film which is a different material from the first film, a polymer foam film, a film made of woven or non-woven fabric,
Examples thereof include paper, foamed paper, ceramics films, metal films, and other composite films obtained by mixing inorganic powders such as silica powder, carbon powder, and alumina powder with other polymer materials. As the polymer film, for example, polyethylene, polypropylene, polyester, fluororesin, general-purpose polymer film such as polyamide, polycarbonate, engineering plastic film such as polyimide, or polyether ether ketone, super engineering plastic film such as polyether ketone, Alternatively, an elastomer film, a heat-fusible resin film, or the like can be used. Examples of the metal film include Al foils, Al alloy foils such as Al-Mg, Cu foils, alloy foils thereof, soft iron foils, stainless steel foils, gold foils, and high melting point polymer foils such as Ti, Ta, and W. be able to. Examples of the ceramic film include an alumina film, a zirconia film,
An aluminum nitride film, a carbon film or the like can be used.

Such a laminated composite film is a long polymer film between a first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners attached to the surface and a second roll having a smooth surface. Of the first roll surface by adjusting the pressing force to the long polymer film passing between the rolls to be uniform over the entire film surface in contact with the rolls. A first porous polymer made of a polymer in which sharp corners of a large number of particles are embedded in the long polymer film to form a large number of non-through holes at a density of 500 / cm ² or more and uniformly. A step of forming a film,
Laminating the film with an adhesive agent.

The first roll has the same structure as that described above.

The second roll is, for example, an iron roll, an iron-based alloy roll, an iron roll having a surface plated with Ni or Cr, a stainless roll, or a relatively soft metal such as brass, aluminum or copper. It is possible to use a roll made of, or a metal roll body whose surface is coated with a polymer resin layer. As the polymer resin, various resins can be used, but urethane resin, silicone rubber, etc., which have a high buffering effect on the long polymer film, are particularly preferable.

The perforation of the non-penetrating holes in the long polymer film adjusts the pressing force to the long polymer film passing between the first and second rolls, and the second roll is used. This is achieved by forming the surface from a soft one.

Yet another laminated composite film according to the present invention is a porous first polymer film in which a large number of fine non-through holes are uniformly and uniformly perforated at a density of 500 / cm ² or more.
The film is laminated on the surface of the first film opposite to the opening side of the non-through holes, and 500 fine through holes are formed per cm ²
A porous second film made of a polymer that is perforated in a large number and uniformly at the above density, and is interposed between the first and second films, and a part of the film is in a large number of through holes of the second film. And an adhesive layer buried in.

As the first and second films, for example, general-purpose polymer films such as polyethylene, polypropylene, polyethylene terephthalate, fluororesin and polyamide, engineering plastic films such as polycarbonate and polyimide, or polyether ether ketone or polyether. A super engineering plastic film such as a ketone can be used.

The hole diameter of the non-through holes of the first film is 5
It is desirable that the thickness be 0 μm or less. Further, the reason for limiting the density of the fine non-through holes perforated in the first film is that if the density is less than 500 / cm ² , the permeation amount of gas such as oxygen becomes small. The density of such non-through holes in the first film can be increased up to 200,000 holes / cm ² as described in the above method, though it depends on the hole diameter. Therefore, the density of the non-penetrating holes in the first film is 500 / cm ² to depending on the relationship with the hole diameter of the non-penetrating holes and the material of the second film.
It is possible to arbitrarily select in the range of 200,000 pieces / cm ² .

It is necessary that the fine through holes formed in the second film have a diameter that allows the adhesive to enter and be buried therein. The diameter of the through hole is 5 to 50 μm.
m, more preferably 10 to 30 μm. Further, the reason for limiting the density of the fine through holes formed in the second film is that if the density is less than 500 / cm ² , the anchoring effect due to the adhesive embedded in the through holes cannot be sufficiently exerted. This is because the second film cannot be bonded to the film with high strength. The density of the through holes in such a second film is
Although it depends on the pore size, it is possible to increase the maximum to 200,000 holes / cm ² as described by the method described above. Therefore, the density of the through holes in the second film is 500 / cm ^{2 to} 200,000 / c depending on the relationship with the hole diameter of the through holes and the material of the second film.
It can be arbitrarily selected within the range of m ² .

Such a laminated composite film comprises a porous first film made of a polymer in which a large number of fine unpenetrated holes are uniformly and perforated at a density of 500 holes / cm ² or more by the above-mentioned method, A porous second film made of a polymer in which a large number of fine through holes are uniformly and perforated at a density of 500 / cm ² or more is prepared in advance, and the porous second film is formed on the opening side of the non-through holes of the first film. It is manufactured by laminating the second film on the opposite surface via an adhesive.

As the laminated composite film, in addition to the above method, a porous second film made of a polymer in which a large number of fine through holes are uniformly and perforated at a density of 500 / cm ² or more is prepared in advance. After laminating a non-perforated polymer film to be the first film with an adhesive on the second film, 500 fine non-through holes are formed on the polymer film by the same method as described above. It is also manufactured by perforating a large number and uniformly at a density of / cm ² or more.

[0034]

According to the laminated composite film of the present invention, a porous first film made of a polymer in which a large number of fine through holes are uniformly and perforated at a density of 500 holes / cm ² or more,
A second layer laminated on one side or both sides of the first film
Interposed between the film and the first and second films,
A part of the adhesive layer is embedded in the plurality of through holes of the first film, so that the anchor layer has an anchoring effect in the portion of the adhesive layer embedded in the plurality of through holes of the first film. The second film can be bonded to the first film with high strength. In addition, when the second film is laminated on both surfaces of the first film with the adhesive layer interposed therebetween, a part of the adhesive layer on both sides of the first film may be the first film.
The adhesive layers on both sides of the first film are embedded in the through holes of the film, and are bonded to each other through the embedded 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 arranged as an intermediate film and which has a higher adhesive strength. Therefore, since it is possible to bond the films to each other with high strength without using a special adhesive having good adhesion to both the first film and the second film (for example, different kinds of polymer films) made of a polymer, It is possible to obtain a laminated composite film that can be used for a wide variety of applications listed in.

(1) First with a large number of fine through holes
Second film composed of different polymers on one or both sides of the film
By laminating the films, a laminated composite film composed of two types of polymers having different physical properties can be obtained.

(2) By adhering the second film made of a metal to the first film, it is possible to obtain a conductive laminated composite film of the second film. Such a laminated composite film can be used as a material for flexible printed wiring boards and other carrier films used for manufacturing semiconductor devices.

(3) The first film is formed of an elastomer, the second film is formed of a non-woven fabric, and these films are laminated with an adhesive to obtain a rubber-like laminated composite film having water absorbency by the non-woven fabric. Obtainable.

(4) By laminating the second film made of a metal on both sides of the first film via the adhesive layer, a part of the adhesive layer on both sides of the first film is the same as the first film. The adhesive layers on both sides of the first film were buried in a large number of through holes and were bonded to each other through a large number of through holes, and a second film made of metal was adhered on both sides of the first film with high strength. A laminated composite film having a three-layer structure can be obtained. Such a laminated composite film can be effectively used as a vibration damping member used as a material for exterior parts of home electric appliances such as washing machines.

(5) First with a large number of fine through holes
A laminated composite film having oxygen permeability can be obtained by forming a film from, for example, polyethylene or polypropylene, forming a second film from a non-woven fabric, and laminating these films via an adhesive.
Such a laminated composite film can be effectively used as a low-cost packaging material for body warmers. That is, the conventional packaging material for body warmers is expensive because it is formed of a laminated composite film having a three-layer structure of polyethylene film / nonwoven fabric perforated by a needle punching method / polyethylene film perforated similarly, Since the laminated composite film of the present invention has a two-layer structure and shows good oxygen permeability, it can be used as a low-cost packaging material for body warmers.

According to the method for producing a laminated composite film, a long roll is provided between the first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners attached to the surface and the second roll having a smooth surface. While passing the polymer film, by adjusting the pressing force to the long polymer film passing between the rolls to be uniform over the entire film surface in contact with the rolls, the length The long polymer film has a large number of fine through-holes at a density of 500 / cm ² or more at the sharp corners of a large number of particles on the surface of the first roll without substantially impairing the original properties of the long polymer film. A porous first film made of a perforated polymer can be produced. Then, by laminating the second film on one side or both sides of the first film via an adhesive, it is possible to obtain good results for both the first film made of a polymer and the second film (for example, a different type of polymer film). It is possible to mass-produce the laminated composite film in which the films are bonded to each other with high strength without using a special adhesive having an adhesive property and which can be used for various purposes described above.

According to another laminated composite film of the present invention, a porous first polymer made of a polymer in which a large number of fine unpenetrated pores are uniformly and uniformly perforated at a density of 500 / cm ² or more.
A film, a second film laminated on the non-penetrating hole forming surface of the porous polymer film, and the first and second films, a part of which is not penetrated into the first film. And a second film with respect to the first film due to an anchoring effect in the adhesive layer portion buried in a large number of unpenetrated holes of the first film. Can be bonded with high strength. Therefore, since it is possible to bond the films to each other with high strength without using a special adhesive having good adhesion to both the first film and the second film (for example, different kinds of polymer films) made of a polymer, It is possible to obtain a laminated composite film that can be used for a wide variety of applications listed in.

(A) By laminating the second film made of different kinds of polymers on one surface of the first film, a laminated composite film made of two kinds of polymers having different physical properties can be obtained.

(B) By adhering the second film made of a metal to the first film, it is possible to obtain a conductive laminated composite film of the second film. Such a laminated composite film can be used as a material for flexible printed wiring boards and other carrier films used for manufacturing semiconductor devices.

According to the method for producing a laminated composite film, a long roll is provided between the first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners attached to the surface and the second roll having a smooth surface. While passing the polymer film, by adjusting the pressing force to the long polymer film passing between the rolls to be uniform over the entire film surface in contact with the rolls, the length without intends little loss of continuous polymer film original characteristics, the sharp corners of a number of particles of the first roll surface the length by bite into continuous polymer film blind pores 500 pieces / cm ² or more It is possible to perforate a large number and uniformly with a density, and it is possible to produce a porous first film made of a polymer. Then, by laminating the second film on one or both sides of the first film via an adhesive, good adhesion to both the first film made of a polymer and the second film (for example, a polymer film) is obtained. It is possible to mass-produce the laminated composite film which can be used for the above-mentioned various uses by adhering the films to each other with high strength without using a special adhesive having

According to yet another laminated composite film of the present invention, a porous first film made of a polymer in which a large number of fine unpenetrated holes are uniformly and perforated at a density of 500 / cm ² or more. And 500 fine through holes are laminated on the surface of the first film opposite to the opening side of the non-through holes,
A porous second film made of a polymer having a large number and uniformly perforated with a density of cm ² or more and the first and second films are interposed, and a part of the second film is penetrated by a large number of holes. And an adhesive layer embedded in the holes, the first film is attached to the second film due to an anchoring effect in the adhesive layer portion embedded in the plurality of through holes of the second film. Can bond with high strength.

In such a laminated composite film, the first film having a large number of non-through holes is formed of, for example, polyethylene or polypropylene, and the second film having a large number of through holes is formed of, for example, polyethylene terephthalate, so that the water pressure resistance ( Water resistance)
It can be used as a low-priced desiccant packaging material and oxygen-steam packaging material having high oxygen and water vapor permeability.

That is, when a bag-shaped oxygen scavenger packaging material is produced using the laminated composite film so that the first film having a large number of non-penetrating holes is on the inner side, the oxygen in the outside world is converted into the second oxygen Oxygen permeates by passing through a large number of through holes of the film, and further in the remaining ultrathin film portion corresponding to the non-through holes of the first film due to the dissolution and diffusion of the gas of the film material. Further, the oxygen permeation amount can be increased or decreased by adjusting the thickness of the remaining length thin film portion and the number of through holes. Therefore, when an oxygen absorber is stored in the packaging material and loaded in a closed container having a high gas barrier property together with contents such as confectionery, oxygen in the container permeates the packaging material and is absorbed by the oxygen absorber. Therefore, the inside of the container can be kept free of oxygen, and quality deterioration due to the oxidation of the contents can be prevented. Moreover, since the packaging material has high water permeation resistance, it is possible to prevent the content from entering the inside through the packaging material and deteriorating the oxygen scavenger therein even if the content is a liquid. You can As a result, the liquid and solid contents can be stored for a long period of time simply by preparing several kinds of packaging materials. On the other hand, the conventional oxygen scavenger packaging material is a polyethylene terephthalate film, a multi-layer film of polyethylene film is provided with a large number of through holes by a needle punching method, etc. Since the structure is such that not only the price increases due to the stacking of Washi paper, but when the contents are stored in a closed container together with the liquid contents, the contents penetrate inside through the through holes and the holes of the Washi paper. There is a problem that the oxygen scavenger stored inside deteriorates.

Further, when the desiccant packaging material is produced by using the laminated composite film in a bag shape so that the first film having a large number of non-penetrating holes is on the inner side, water vapor in the external environment becomes the second film. Through the large number of through holes, and further the water vapor permeates due to the dissolution and diffusion of the gas possessed by the film material in the remaining ultra-thin film portion corresponding to the non-through holes of the first film. Therefore, when a desiccant is stored in the packaging material and loaded with a content such as a confectionery in a closed container having a high gas barrier property, water vapor in the container is absorbed by the desiccant through the packaging material. The inside of the container can be dried, and the quality of the contents due to moisture can be prevented from being deteriorated.

[0049]

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

FIG. 1 is a front view showing the main part of the manufacturing apparatus for the laminated composite film used in this embodiment, FIG. 2 is a side view showing the main part of the manufacturing apparatus of FIG. 1, and FIG. 3 is III in FIG. -III
Sectional drawing which follows the line, FIG. 4 is a front view which shows a laminating mechanism.

Reference numeral 101 in the drawing is a bed. A table 102 is provided on the upper surface of the bed 101 except near the right end. Two hook-shaped frames 103 are installed on the table 102 at predetermined intervals in the width direction of the table 102. The frame 103 includes a lower plate 103a, side plates 103b and an upper plate 1.
It is formed from 03c. A first bearing having a bearing 104 is provided near the middle of the side plate 103b of each frame 103.
The boxes 105 are fixed. A first roll 106 is arranged between the frames 103. As shown in FIG. 2, the first roll 106 has a large number of particles having a Mohs hardness of 5 or more (for example, synthetic diamond particles) 10 having a grain size of 70 to 85 μm and sharp corners, for example.
7 is composed of an iron roll main body 108 electrodeposited on the surface at an area ratio of 70% or more, and a shaft 109 penetrating the center of the main body 108 and protruding from both end surfaces of the main body 108. Both projecting ends of the shaft 109 are respectively supported by bearings 104 in the first box 105. One end side of the first roll 106 (for example, the left end side)
The shaft 109 extends through the box 105, and a gear 111 that meshes with a gear of a drive shaft of a motor (not shown) is attached to the protruding portion of the shaft 109. Therefore, the first roll 106 is driven by driving the motor.
Is rotated clockwise, for example.
In addition, a gear 110 is attached to a protruding portion of the shaft 109 located between the gear 111 and the left side surface of the box 105.
Is pivoted.

Rails 112 and 113 are formed on the side plates 103b of the frames 103 located below and above the first box 105, respectively.
As shown in FIG. 3, sliders 114 (the other slider is not shown) are vertically movably arranged on the lower rails 112, respectively. Each slider 11
A second box 116 having a bearing 115 built therein is fixed to each of the rails 4, and can be moved vertically along the rail 112. A second roll 117 is disposed between the frames 103 so as to face the first roll 106 below the first roll 106. The second roll 117 is composed of a roll main body 118 made of, for example, stainless steel and having a hard surface, and a shaft 119 penetrating the center of the main body 118 and protruding from both end surfaces of the main body 118. Both projecting ends of the shaft 119 are axially supported by bearings 115 in the second box 116. One end side of the second roll 117 (for example, the left end side)
119 has a shaft 119 protruding through the second box 116, and a gear 120 that meshes with a gear 110 of the shaft 109 of the first roll 106 is attached to the protruding portion of the shaft 119. .. Therefore, the second roll 117 may include the second box 116 and the slider 1.
It is arranged by 14 so as to be vertically movable along the rail 112. The first roll 106 is driven by the motor.
By rotating the shaft 109 of the shaft 109 in the clockwise direction, the shaft 119 having the gear 120 meshing with the gear 110 of the shaft 109 rotates in the counterclockwise direction, and as a result, the second roll 117 is rotated counterclockwise. It is designed to rotate in a clockwise direction.

As shown in FIG. 3, sliders 121 (the other slider is not shown) are vertically movably arranged on the upper rails 113, respectively. A third box 123 having a bearing 122 built therein is fixed to each of the sliders 121, and can be vertically moved along the rails 113. In addition, the third roll 124 is provided between the frames 103, and the first roll 10
6 are disposed so as to face each other. The third roll 124 is an iron roll body 1 whose surface is coated with a polymer resin layer 125 such as urethane resin.
26 and the main body 126 through the center of the main body 126.
6 and shafts 127 protruding from both end surfaces of the shaft 6. Both projecting ends of the shaft 127 are axially supported by the bearings 122 in the third box 123. The shaft 12 on one end side (for example, the left end side) of the third roll 124
The seventh portion protrudes 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 attached to the protruding portion of the shaft 127. Therefore, the third roll 124 is 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 the shaft 109 clockwise,
Shaft 127 having said gear 128 meshing with said gear 110 rotates in a counterclockwise direction, resulting in said third
The roll 124 is adapted to rotate 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 second rolls. The three boxes 123 and the third roll 124 form a punching unit 129.

A cylindrical body 13 having upper and lower flanges 130 and 131 on the lower walls of the two second boxes 116.
2 are arranged respectively. Each of the cylindrical bodies 132 is
As shown in FIG. 3, from the upper flange 130 to the second
The plurality of screws 133 screwed to the lower wall of the box 116 are fixed to the second box 116. A disc 135 having a hole 134 in the center thereof is arranged on the lower flange 131 of each cylindrical body 132,
Further, each of the discs 135 is fixed by a plurality of screws 136 screwed to the lower flange 131 from each of the discs 135. A coil spring 137 is housed in each of the cylindrical bodies 132 so as to apply an elastic force in the 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 disc 135.
The pressure sensors 138 are in contact with the lower ends of the coil springs 137, and can detect the pressing force applied to the coil springs 137 due to the rising of the rods 139. A disk-shaped guide 140 for smoothly moving the rod 139 up and down is attached to the rod 139 portion below each sensor 138. A ball screw 14 is attached to the lower end of each rod 139.
1 is inserted respectively. Each ball screw 1
41 penetrates the lower plate 103a of the frame 103 and projects into the recesses (not shown) of the bed 102. A casing (the other casing is not shown) 142 having a threaded engagement plate (not shown) is provided in each of the recesses. The lower end protruding portion of the ball screw 141 is screwed into the engagement plate in each of the casings 142. Worm shafts (not shown) that engage with the lower end projections of the ball screws 141 are horizontally inserted into the respective casings 142, and a handle is provided at one end of each worm shaft (the other handle is a (Not shown) 143 are provided respectively. Therefore, when the handle 143 is rotated, the ball screw 141 engaged with the worm shaft of the handle 143 is rotated, and the rod 139 having the ball screw 141 inserted therein is moved up (or down). ing. In this case, when the rod 139 is lowered by a certain distance or more, the disc-shaped guide 140 attached to the rod 139 comes into contact with the inner surface of the disc 135 below the cylindrical body 132 to lower the cylindrical body 132 itself. Let Therefore, the second box 116 fixed to the upper end of the cylindrical body 132 is lowered by the slider 114 along the rail lower 112.

The two cylindrical bodies 132, the two discs 135, the two coil springs 137, the two pressure sensors 138, the two rods 139, the two discoid guides 140, and the two ball screws. 14
1, the first casing 142, the two worm shafts (not shown) and the two handles 143 adjust the pressing force to the film passing between the first and second rolls 106 and 117. The adjusting means 144 is configured.

A cylindrical body 14 having upper and lower flanges 145 and 146 is provided on the upper walls of the two third boxes 123.
7 are arranged. Each of the cylindrical bodies 147 is
As shown in FIG. 3, from the lower flange 146 to the third
The plurality of screws 148 screwed to the upper wall of the box 123 are fixed to the third box 123. On the upper flange 145 of each of the cylinders 147, there is arranged a disc 150 having a hole 149 in the center,
In addition, each of the disks 150 is fixed by a plurality of screws 151 screwed from the disks 150 to the upper flange 145. A coil spring 152 is housed in each of the cylindrical bodies 147 so as to apply an elastic force in the vertical direction. There is. A rod 154 having a pressure sensor 153 attached to the lower end thereof is provided in each of the cylindrical bodies 147.
It is inserted through 50 holes 149. The pressure sensors 153 are in contact with the upper ends of the coil springs 152, and the coil springs 152 are moved by lowering the rods 154.
It is possible to detect the pressing force to. A disc-shaped guide 155 for smoothly moving the rod 154 up and down is provided on the rod 154 portion above each sensor 153.
Are attached respectively. Ball screws 156 are inserted into the upper ends of the rods 154, respectively. Each of the ball screws 156 penetrates the upper plate 103c of the frame 103 and passes through the upper plate 103c.
Projecting above. On the upper surface of each of the upper plates 103c, a casing (the other casing is not shown) 157 having a threaded engagement plate (not shown) is provided. The upper end protrusion of the ball screw 156 is screwed into the engagement plate in each casing 157. Worm shafts (not shown) that engage with the upper end protrusions of the ball screws 156 are inserted into the casings 157 from the horizontal direction, and a handle is provided at one end of each worm shaft (the other handle is a (Not shown) 158 are provided respectively. Therefore, by rotating the handle 158, the ball screw 156 engaging with the worm shaft of the handle 158 is rotated, and the ball screw 15 is rotated.
6 descends (or ascends) the rod 154 with the inserted 6
It is supposed to do. In this case, when the rod 154 is raised above 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. Therefore, the third box 123 fixed to the lower end of the cylindrical body 147 is attached to the slider 12.
1 raises along the rail 113.

The two cylindrical bodies 147, the two discs 150, the two coil springs 152, the two pressure sensors 153, the two rods 154, the two discoid guides 155, and the two ball screws. 15
6, the second casing 157, the two worm shafts (not shown) and the two handles 158 adjust the pressing force to the film passing between the first and third rolls 106 and 124. The adjusting means 159 is configured.

A winding roll (not shown) of a long polymer film is arranged in front of the perforating unit 129, and the long polymer film 160 of the winding roll passes through two feed rolls 161. Then, it is supplied between the first and second rolls 106 and 117 of the unit 129 and between the first and third rolls 106 and 124. An electrostatic removing means 162 is arranged at the subsequent stage of the unit 129. The static electricity removing means 162 uses the table 102.
A container 163 installed above and containing pure water, and an ultrasonic wave generation member (not shown) for applying ultrasonic waves to the pure water.
It consists of and. Between the unit 129 and the static electricity removing means 162, inside the container 163 and at the subsequent stage of the container 163, the first and third rolls 106, 1 are provided.
5 for transporting the long film that has passed between 24
Two feed rolls 161 are arranged respectively. It should be noted that a contact roll 164 is arranged on each of the two feed rolls 161 positioned in the front and rear stages of the container 163. A plurality of hot air blowing members (not shown) for drying the film that has passed between the feed roll 161 and the contact roll 164 are provided at the subsequent stage of the static electricity removing means 162.
Are arranged.

A laminating mechanism 165 shown in FIG. 4 is arranged downstream of the hot air blowing member. The laminating mechanism 165 includes first and second tanks 167 and 168 containing an adhesive 166. Three coating rolls 169 are vertically arranged in the first tank 167. A part of the lowermost coating roll 169 is immersed in the adhesive 166 in the first tank 167. The joining roll 170 is arranged opposite to the uppermost coating roll 169. A long second film 171 is supplied between the coating roll 169 and the joining roll 170. A contact roll 172 is arranged opposite to the joining roll 170. These joining roll 170 and pad roll 172
In between, the porous first film 173 made of the perforated polymer and the second film 171 coated with an adhesive are supplied. The second tank 168 has 2
One coating roll 174 is arranged vertically. A part of the lower coating roll 173 is immersed in the adhesive 166 in the second tank 168. Top coating roll 1
A joining roll 175 is arranged to face 74. Another long second film 176 is supplied between the coating roll 174 and the joining roll 175. A contact roll 177 is arranged opposite 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 through a feed roll 178 via an adhesive and an adhesive are applied. The separated second film 176 is supplied. It should be noted that the contact roll 177 is disposed so as to be separable from and in contact with the joining roll 175, and in the mode in which the second film 176 is not used, the contact roll 177 is the joining roll 1.
Moved well away from 75.

At the subsequent stage of the laminating mechanism 165, a winding roll (not shown) is arranged.

Example 1 The first and second rolls 106, 1 of the perforating unit 129 in the laminated composite film manufacturing apparatus having the above-described structure.
A method for producing a laminated composite film in which a long film made of polyethylene terephthalate (PET) is perforated between 17 and a second film made of polyvinyl chloride (PVC) is bonded to one surface of the obtained porous first film. Figure 1
~ It demonstrates with reference to FIG. 4 and FIG.

First, by rotating the two handles 143 of the first pressure adjusting means 144, for example, in the counterclockwise direction, the second boxes 116 of the drilling unit 129 connected to the upper ends of the respective cylindrical bodies 132 are slid. 114
To lower the rails 112 of each frame 103 along the respective rails 112, so that the bearings 11 in the second boxes 116 are
The second roll 117, which is pivotally supported by 5, is separated from the first roll 106 thereon by a sufficient distance. Further, by rotating the two handles 158 of the second pressure adjusting means 159, for example, in the clockwise direction, the sliders 121 can be attached to the respective third boxes 123 connected to the lower ends of the respective cylindrical bodies 147.
To raise the rails 113 of the frames 103 along the rails 113 of the frames 103.
The third roll 124 pivotally supported by 2 is separated from the first roll 106 therebelow with a sufficient space. In such a state, a PE having a thickness of 12 μm is wound from a winding roll (not shown).
A long film 160 made of T and two feed rolls 16
1, the first and second rolls 1 of the unit 129
06, 117, between the feed roll 161, and between the first and third rolls 106, 124, and then through the inside of the container 163 of the static eliminator 162 by the four feed rolls 161 and further a plurality of hot air streams. An injection member (not shown),
The long film 16 is passed through a bonding roll 170 and a contact roll 172 of the laminating mechanism 165, a feed roll 178 and a contact roll 177, and then passed through a winding roll (not shown).
Wind the tip of 0.

Incidentally, in the case where the long film 160 is passed between the first and third rolls 106 and 124 in the step, as shown in FIG.
The 60 does not contact the surface of the first roll 106. In addition, since the second film is laminated only on one side of the first film in the first embodiment, the laminating mechanism 165 is used.
The second film 171 made of PVC having a thickness of 30 μm was passed through the space between the uppermost coating roll 168 and the bonding roll 170 arranged in the first tank 167, and was applied to the long film so as to be overlapped between the roll 172 and the bonding roll 170. In this state, the leading end of the long film 160 is wound around a winding roll (not shown) by passing 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 arranged above the second tank 166.

Then, after the leading end of the long film 160 is wound on a winding roll, the first pressure adjusting means 14 is used.
By rotating the two handles 143 of No. 4 in the clockwise direction, each of the second handles connected to the upper end of each of the cylindrical bodies 132.
Box 116 with slider 114 for each frame 1
No. 2 of each of the second boxes 116, which are respectively supported by the bearings 115 in the second boxes 116.
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. Due to the compression of each coil spring 137, a pressing force is applied to the lower wall of each second box 116, and the second roll 11 pivotally supported by the bearing 115 in the second box 116.
7 and the pressing force between the first roll 106 increase. At this time, the pressure sensor 138 causes the second roll 11 to move.
7 and the first roll 106 by detecting the pressing force (compressive force) and adjusting the rotation of each of the handles 143 in the forward and reverse directions, thereby the second and first rolls 117 and 106.
The pressing force on the long film 160 located between them is adjusted. By adjusting the pressing of the unit 129 by the first pressure adjusting unit 144, the film 16 in contact with the second and first rolls 117 and 106.
A uniform pressing force is applied to the entire 0 surface, and preparation for the punching operation is completed.

After the preparation for the punching operation is completed, ultrasonic waves are applied to the pure water contained in the container 163 of the static electricity removing means 162 by an ultrasonic wave generating member (not shown). Further, a polyisocyanate solvent type polyurethane adhesive 166 manufactured by Nisso Corporation is stored in the first tank 167 of the laminating mechanism 165. Subsequently, by rotating the take-up roll and the drive shaft of a motor (not shown) at the same time, the gear of the drive shaft and the first roll 1 are rotated.
The rotation of the gear 111 of the shaft 109 at 06 causes the first roll 106 to rotate in the clockwise direction. When the first roll 106 rotates, the gear 1 of the shaft 109
10 and the gear 1 of the shaft 119 of the second roll 117
By the rotation transmission of 20, the second roll 117 is rotated in the counterclockwise direction. In this case, the third roll 124
Are disposed above the first roll 106 sufficiently apart from each other, 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, and The roll 124 is not driven by the rotation of the motor and is free to rotate. By thus rotating the first and second rolls 106 and 117, 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 at an area ratio of 70% or more. The second roll 117 is structured to have a roll body 118 having a hard surface such as stainless steel.
In addition, the first and second rolls 10 are adjusted by adjusting the pressure applied to the unit 129 by the first pressure adjusting means 144.
A uniform pressing force is applied to the entire contact surface between the rolls 106 and 117 of the long film 160 that passes between 6 and 117. Therefore, the long film 160 made of PET is used for the first and second rolls 106 and 11.
When passing through between 7 and 7, due to the sharp corners of the large number of synthetic diamond particles 107 on the surface of the first roll 106, the P
The ET film is perforated uniformly in the width direction without substantially impairing the original properties of the ET film. As a result, as shown in FIG. 7, the fine through-hole 180 having a diameter of 10 to 20 μm is formed.
A first porous film 173 made of PET is prepared, which is made of a large number and uniformly perforated at a density of 5000 / cm ² .

Then, the first film 173 perforated by the unit 129 is fed to the five feed rolls 161.
And it passes through and conveys in the container 163 of the said electrostatic removal means 162 by the two contact rolls 164. Since the perforation of the long film 160 by the unit 129 is mainly based on the friction between the first and second rolls 106 and 117, the first film 173 after the perforation treatment is performed.
A large amount of static electricity is generated on the surface, and dust around it adheres. By passing the first film 173 after the perforation processing through the container 163 containing the pure water of the static electricity removing means 160, and applying ultrasonic waves to the pure water by an ultrasonic wave generation member (not shown), First film 173
Wash away the dust that has adhered to. Subsequently, the first film 173 is passed through a plurality of hot air jetting members (not shown) to volatilize and remove water on the surface.

Then, 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 coating roll 169 to pass through the first tank 167.
Adhesive 166 is applied to one side of P with a thickness of 30 μm
The long second film 171 made of VC is passed between the joining roll 170 and the contact roll 172. By 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 17 are formed.
3, 171 are laminated via the adhesive layer. Continuing,
The laminated film 179 has a feed roll 178 and a reliance roll 1
After being conveyed to a plurality of hot air jetting members (not shown) through 76 and dried, it is further wound by a winding roll.

By the method of the first embodiment as described above, FIG.
The laminated composite film having the structure shown in FIG. That is, 173 in the figure is a first film made of PET having a thickness of 12 μm in which a large number of through holes 180 having a diameter of 10 to 20 μm are perforated at a density of 5000 holes / cm ² . A second film 171 made of PVC and having a thickness of 30 μm is laminated on one surface of the first film 173 with a urethane adhesive layer 181 interposed therebetween. The adhesive layer 1
Part of 81 is embedded in a large number of through holes 180 of the first film 173.

A laminated composite film produced by the present Example 1 and a PET film having no through holes were laminated with a PVC film treated by corona discharge using the same adhesive as in Example 1 (Comparative Example 1). )about,
The adhesive strength between the films was measured. As a result, the laminated composite film of Comparative Example 1 had a weight of 400 g / 30 mm, while the laminated composite film of Example 1 had a thickness of 800 g / 30 mm.
It was confirmed to have an extremely high adhesive strength of g / 30 mm.

Example 2 In the same manner as in Example 1, perforation, dust washing,
First film 1 made of dried polyester
73 is conveyed to the laminating mechanism 165, and the joining roll 17
0 at the same time as passing between the contact roll 172 and the joining roll 170 and the coating roll 169.
Adhesive 166 in a tank 167 of 3
The long second film 171 made of 0 μm PVC is passed between the joining roll 170 and the contact roll 172. By this step, the first film 173 and the second film 171 coated with the urethane-based adhesive are pressed by the joining roll 170 and the contact roll 172 to bond the first and second films 173 and 171. It is laminated via the agent layer. 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 17
No. 5 and the coating roll 174 are passed and the urethane adhesive 166 in the second tank 168 is applied on one side to a thickness of 30.
Another long second film 176 made of PVC of μm is passed between the joining roll 175 and the contact roll 177. By this step, the laminated film 179 and the second film 176 coated with the adhesive are pressed by the joining roll 175 and the contact roll 177, and the films 179 and 176 are laminated via the adhesive layer. Then, after drying with a plurality of hot air blowing members (not shown), it is further wound around a winding roll.

By the method of the second embodiment as described above, FIG.
The laminated composite film having the structure shown in FIG. That is, 173 in the figure is a first film made of a polyester having a thickness of 12 μm in which a large number of through holes 180 having a diameter of 10 to 20 μm are perforated at a density of 5000 holes / cm ² . The first film 173 has a thickness of 30 μ, which is made of PVC, on both surfaces thereof with adhesive layers 181 and 182 interposed therebetween.
m second films 171 and 176 are laminated respectively. A part of the adhesive layer 181, 182 is formed on the first layer.
The film 173 is buried in a large number of through holes 180, and is connected to each other in the through holes 180.

Corona discharge treated P using the same adhesive as in Example 1 on both sides of the laminated composite film produced in Example 2 and the polyester film having no through holes.
Regarding the laminated composite film (Comparative Example 2) in which VC films were laminated, the adhesive strength of the film made of PVC on both sides to the film made of polyester in the middle was measured. As a result, it was confirmed that the laminated composite film of Comparative Example 2 had an adhesive strength of 400 g / 30 mm, whereas the laminated composite film of Example 2 had an extremely high adhesive strength of 1200 g / 30 mm.

Example 3 10 to 20 μm prepared by the same method as in Example 1
PVC with 30 μm thickness in which a large number of fine through holes having a diameter of 5,000 are uniformly perforated at a density of 5000 holes / cm ^2.
Made of Al-Mg type Al alloy with urethane adhesive on both sides of the porous first film made of
A laminated composite film was manufactured by laminating the m second films, respectively.

Regarding the laminated composite film of this Example 3 and the laminated composite film (Comparative Example 3) in which both sides of the PVC film having no through holes are laminated with a film made of an Al alloy through an adhesive in the same manner as in Example 3. The adhesive strength between the films was measured. As a result, it was confirmed that the laminated composite film of Comparative Example 3 had almost no adhesion of 200 g / 30 mm, whereas the laminated composite film of Example 3 had an extremely high adhesive strength of 1000 g / 30 mm.

Example 4 The first and third rolls 106, 1 of the perforating unit 129 in the laminated composite film manufacturing apparatus having the above-described structure.
A method for producing a laminated composite film in which a long film made of polyethylene terephthalate (PET) is perforated between 24 pieces and a second film made of polyethylene (PE) is adhered to one surface of the obtained porous first film This will be described with reference to FIGS. 1 to 4 and 6.

First, as in the first embodiment described above, the two handles 143 of the first pressure adjusting means 144 are rotated, for example, in the counterclockwise direction so that the second roll 117 is sufficiently removed from the first roll 106 above it. The two handles 15 of the second pressure adjusting means 159.
By rotating 8 in the clockwise direction, for example, the third
The roll 124 is separated from the first roll 106 therebelow by a sufficient distance, and the leading end of the long film 160 made of PET having a thickness of 12 μm is wound from a winding roll (not shown) as in Example 1. Each member is passed and wound on a winding roll (not shown). When passing the long film 160 between the first and second rolls 106 and 117, the long film 160 is prevented from coming into contact with the surface of the first roll 106 as shown in FIG.

Then, after the leading end of the long film 160 is wound on a winding roll, the second pressure adjusting means 15 is used.
By rotating the two handles 158 of 9 in the counterclockwise direction, each third box 123 connected to the lower end of each cylindrical body 147 is lowered by the slider 121 along each rail 113 of each frame 103, The third roll 124 pivotally supported by the bearing 122 in each of the third boxes 123 is brought into contact with the first roll 106 therebelow. Further, by rotating each of the handles 158 in the same direction, each sensor 152 at the lower end of each rod 154 compresses each coil spring 152 therebelow. Due to the compression of each coil spring 152, a pressing force is applied to the upper wall of each third box 124, and the third roll 12 pivotally supported by the bearing 122 in the third box 123.
4 and the pressing force between the first roll 106 increases. At this time, the pressure sensor 152 causes the third roll 12 to move.
4 and the first roll 106 are detected and the rotation of each handle 158 is adjusted in the forward and reverse directions to detect the pressing force (compressive force) between the third and first rolls 124 and 106.
The pressing force on the long film 160 located between them is adjusted. By the pressing adjustment of the unit 129 by the second pressure adjusting means 159, the pressing of the long film 160 located between the third and first rolls 124 and 106 is uniform over the entire width direction. Pressure is applied and the drilling operation is ready.

After the preparation for the punching operation is completed, ultrasonic waves are applied to the pure water contained in the container 163 of the static electricity removing means 162 by an ultrasonic wave generating member (not shown). In addition, the same urethane adhesive 166 as in the first embodiment is stored in the first tank 167 of the laminating mechanism 165. Subsequently, at the same time as rotating the winding roll, by rotating the drive shaft of the motor (not shown), the gear of the drive shaft,
The first roll 106 is rotated in the clockwise direction by the rotation transmission of the gear 111 of the shaft 109 in the first roll 106. When the first roll 106 rotates, the rotation of the gear 110 of the shaft 109 and the gear 128 of the shaft 127 of the third roll 124 causes the third roll 124 to rotate in the counterclockwise direction. In this case, since the second roll 117 is arranged sufficiently above the first roll 106, the gear 120 of the shaft 119 of the second roll 117 and the gear 110 of the shaft 109 of the first roll 106 are separated. The engagement is released and the second
The roll 117 is not driven by the rotation of the motor,
Free rotation. In this way, the first and third rolls 1
By rotating 06 and 124, these rolls 1
The long film 160 passing between 06 and 124 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 at an area ratio of 70% or more. The third roll 124 has a structure including a roll body 126 whose surface is coated with a polymer resin layer 125 such as urethane resin. Further, by adjusting the pressure applied to the unit 129 by the second pressure adjusting means 159,
A uniform pressing force is applied to the entire contact surface of the long film 160 passing between the first and third rolls 106 and 124 with the rolls 106 and 124. For this reason,
When the long film 160 made of PET passes between the first and third rolls 106 and 124, the first film
Many synthetic diamond particles 107 on the surface of the roll 106
The pressing force on the film 160 due to the sharp corners of the
The unpenetrated holes are uniformly formed without substantially impairing the original properties of the film. As a result, as shown in FIG.
A porous first film 173 made of PET in which a large number of fine through-holes 183 having a diameter of 20 μm and a depth of 9 to 10 μm are uniformly perforated at a density of 5000 holes / cm ² is produced. ..

Then, the first film 173 perforated by the unit 129 is fed to the five feed rolls 161.
And it passes through and conveys in the container 163 of the said electrostatic removal means 162 by the two contact rolls 164. Since the perforation of the long film 160 by the unit 129 is mainly based on the friction between the first and second rolls 106 and 117, the first film 173 after the perforation treatment is performed.
A large amount of static electricity is generated on the surface and dust around it is attached. By passing the first film 173 after the perforation processing through the container 163 containing the pure water of the static electricity removing means 160, and applying ultrasonic waves to the pure water by an ultrasonic wave generation member (not shown), First film 173
Wash away the dust that has adhered to. Subsequently, the first film 173 is passed through a plurality of hot air jetting 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 coating roll 169, and the first tank 167.
Adhesive 166 is applied to one side of P with a thickness of 30 μm
The long second film 171 made of E is passed between the joining roll 170 and the contact roll 172. Through this step, the first film 173 and the second film 171 arranged on the non-through hole forming surface side of the film 173 with an adhesive are used for the joining roll 170 and the contact roll 17
The films 173 and 171 are pressed by 2 and are laminated via the adhesive layer. Next, laminated film 17
9 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 taken up by a take-up roll.

According to the method of the fifth embodiment as described above, FIG.
A laminated composite film having the structure shown in 1 is manufactured. That is, 173 in the figure has a diameter of 10 to 20 μm and is 9 to 10 μm.
PET having a thickness of 12 μm, in which a large number of non-through holes 183 having a depth of 5,000 and a density of 5000 holes / cm ² are uniformly drilled
Is a first film consisting of. The first film 173
The urethane-based adhesive layer 18 is formed on the surface where the unpenetrated holes 183 are formed.
The second film 1 made of PE and having a thickness of 30 μm
71 are stacked. Part of the adhesive layer 184 is
The first film 173 is buried in a large number of non-through holes 183.

With respect to the laminated composite film produced in Example 4, the adhesive strength between the films was measured. As a result, it was confirmed to have an extremely high adhesive strength of 700 g / 30 mm.

In the above-mentioned Examples 1 to 4, the first film made of PET was used. However, even if one made of other polymer such as fluororesin, polyamide, elastomer is used, the first film is the same as those in Examples 1 to 4. A laminated composite film having similar excellent adhesiveness can be obtained.

Example 5 An unpenetrated hole having a diameter of 10 to 20 μm and a depth of 25 to 28 μm is obtained by perforating a long film of PE having a thickness of 30 μm by performing the same method as in Example 4. A first film was prepared in which a large number and perforations were uniformly formed at a density of 5000 / cm ² . Further, a long film having a thickness of 12 μm made of PET is subjected to the same method as in Example 1 to perforate the film to obtain 10 to 20.
A second film was produced in which a large number of through holes each having a diameter of μm were uniformly perforated at a density of 5000 holes / cm ² .

Next, a laminated composite film was produced by laminating the second film on the surface of the first film opposite to the opening side of the non-penetrating hole via a urethane adhesive.

The obtained laminated composite film had high water resistance, oxygen permeability, and had a two-layer structure, so that it could be used as a low-cost oxygen absorber packaging material.

[0090]

As described above in detail, according to the present invention, a film made of a material different from the above film is adhered to a film made of various polymers with high strength, and the packaging field,
It is possible to provide a laminated composite film useful in the fields of clothing and electronic devices, and a method for producing such a laminated composite film simply and in mass production.

[Brief description of drawings]

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

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

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

FIG. 4 is a schematic view showing a laminating mechanism incorporated in the latter 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 showing a first film manufactured according to Example 1.

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

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

FIG. 10 is a cross-sectional view showing a first film manufactured according to Example 4.

11 is a cross-sectional view showing a laminated composite film manufactured according to Example 4. FIG.

[Explanation of symbols]

101 ... Bed, 102 ... Table, 103 ... Frame, 105 ... First Box, 106 ... First Roll, 11
6 ... 2nd box, 117 ... 2nd roll, 123 ... 3rd
Box, 124 ... Third roll, 129 ... Punching unit, 132, 147 ... Cylindrical body, 137, 152 ... Coil spring, 151, 143, 158, 175 ... Handle, 1
44, 159 ... Pressure adjusting means, 160 ... Long film, 162 ... Electrostatic removing means, 166 ... Adhesive agent, 167,
168 ... Tank, 171, 176 ... Second film, 173 ...
First film, 180 ... Through hole, 181, 182, 18
4 ... Adhesive layer, 183 ... Unpenetrated hole.

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display area B29L 7:00 4F 9:00 4F

Claims (5)

[Claims] 1. A porous first film made of a polymer in which a large number of fine through holes are uniformly and perforated at a density of 500 holes / cm ² or more, and one side or both sides of the first film are laminated. Second
A film, and an adhesive layer interposed between the first and second films and partially embedded in a large number of through holes of the first film,
A laminated composite film comprising: 2. A long polymer film is passed between a first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners attached to the surface and a second roll having a smooth surface, and The pressing force applied to the long polymer film passing between the rolls is adjusted so as to be uniform over the entire film surface in contact with the rolls.
A step of producing a porous first film made of a polymer by perforating a plurality of fine through-holes at a density of 500 / cm ² or more in the long polymer film at sharp corners of a large number of particles on the roll surface. 2. The method for producing a laminated composite film according to claim 1, further comprising: laminating a second film on one surface or both surfaces of the first film with an adhesive. 3. A porous first film made of a polymer in which a large number of fine non-through holes are uniformly and perforated at a density of 500 holes / cm ² or more, and the non-through holes of the porous polymer film. A second film laminated on the formation surface; and an adhesive layer interposed between the first and second films and partially buried in a large number of unpenetrated holes of the first film. A laminated composite film characterized in that 4. A long polymer film is passed between a first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners attached to the surface and a second roll having a smooth surface, and The pressing force applied to the long polymer film passing between the rolls is adjusted so as to be uniform over the entire film surface in contact with the rolls.
A large number of particles on the surface of the roll are bitten into the long polymer film to form a large number of non-through holes at a density of 500 / cm ² or more, and to form a porous polymer film. The laminated composite film according to claim 3, further comprising: a step of producing a first film; and a step of laminating a second film on an unpenetrated hole forming surface of the first film via an adhesive. Manufacturing method. 5. A porous first film made of a polymer in which a large number of fine unperforated holes are uniformly and perforated at a density of 500 / cm ² or more, and an opening of the non-through holes of the first film. A porous second layer made of a polymer laminated on the surface opposite to the side and having a large number of fine through holes with a density of 500 / cm ² or more.
A film, and an adhesive layer interposed between the first and second films and partially embedded in a large number of through holes of the second film,
A laminated composite film comprising: