JP2002059487A - Apparatus for manufacturing porous film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a porous film capable of forming a plurality of strip-like perforated regions at a desired interval along a widthwise direction on a long-sized film. SOLUTION: The apparatus for manufacturing the porous film comprises a perforating unit having a first roll including a sharp corner and many particles each having a Mohs' hardness of 5 or more and adhered to its surface, guide roll rings disposed near both ends, and a second roll including a strip-like protrusion formed on an outer peripheral surface between these guide rolls and including an actuate surface in plane with the outer peripheral surface of the guide roll, so that the first and second rolls are oppositely disposed at their outer peripheral surfaces, a long-sized film is passed, one of the rolls is fixed, and the other is movably disposed to the one roll; a pressure regulating means for pressing the movable roll toward the fixed roll; and a drive means for rotating the fist and second rolls.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a porous film, and in particular, a large number of non-perforated holes and / or through holes suitable for a material for easily tearable packaging bags, degassing packaging bags, and the like. The present invention relates to an apparatus for manufacturing a porous film.

[0002]

2. Description of the Related Art The applicant of the present invention has proposed a long film made of various materials including a polymer material and a metal in a range of sub-μm to tens of μm without substantially impairing the original characteristics of the film material. A manufacturing apparatus for a porous film capable of forming a large number of uniform through holes or non-through holes uniformly and densely (5000 to 200,000 per cm ² ) regularly (partially) has already been selected. An application was made and published as Japanese Patent Application Laid-Open No. Hei 7-164535, which was further examined and patented.

[0003] The apparatus for producing a porous film comprises a supply means for supplying a long film; a rotatable first roll having a number of particles having a Mohs hardness of 5 or more having sharp corners adhered to the surface thereof; A second roll having a desired convex pattern formed on an outer peripheral surface thereof and rotatable in a direction opposite to the roll, and an organic polymer sheet having elasticity coated on at least a convex pattern forming surface of the second roll; With
The first and second rolls are arranged to face each other so that the long film passes between them, one of the rolls is fixed, and the other is fixed to the one roll. A piercing unit movably disposed; the organic polymer provided near the both ends of the movable roll of the unit, the movable roll facing the fixed roll and corresponding to the convex pattern. Pressure adjusting means for pressing the sheet to a position where the distance between the surface of the sheet portion and the tip of the particle is smaller than the thickness of the long film.

In such an apparatus for producing a porous film, the first roll to which a number of particles having a Mohs hardness of 5 or more (for example, synthetic diamond particles) constituting the perforation unit are adhered, and a convex pattern are formed on the outer peripheral surface. The long film is passed between a second roll on which an organic polymer sheet having elasticity (for example, a lattice pattern) is formed. The distance between the surface of the sheet portion corresponding to the convex pattern and the tip of the particle is smaller than the thickness of the long film and smaller than zero by, for example, directing the second roll toward the first roll by the pressure adjusting means. Press to the position and rotate the rolls in opposite directions. At this time, the long film is sandwiched between the surface of the sheet portion corresponding to the convex pattern and the sharp corners of the large number of synthetic diamond particles. For this reason, the sharp corners of the synthetic diamond particles facing the convex pattern selectively penetrate the film to a certain depth due to the buffering action of the organic polymer sheet, thereby performing mechanical perforation. As a result, a large number of non-through holes in which the ultra-thin film portions corresponding to the gaps remain in the long film can be formed in a regular manner, for example, in a lattice shape corresponding to the convex pattern. In addition, since the perforation operation is performed by mechanical force of the synthetic diamond particles attached to the first roll, it is possible to reduce the number of fine dimensions in the long film without substantially impairing the inherent properties of the film material. Non-through holes can be formed regularly.

However, the above-described apparatus for manufacturing a porous film, when passing a long film between the second roll and the synthetic diamond particles of the first roll facing the convex pattern of the second roll, cleans the surface of the convex pattern. A low-strength organic polymer sheet is arranged so as to cover and a non-through hole is perforated in the long film by its buffering action. For this reason, the organic polymer sheet is damaged by a short-time perforating operation. As a result, it becomes necessary to frequently replace the damaged organic polymer sheet, which makes continuous operation of the apparatus difficult and increases the cost of processing a long film due to consumption of the organic polymer sheet. Was.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a long film made of various materials such as organic polymers and metals, which has a sub-micron to several tens of micrometer length without substantially impairing the inherent properties of the film material. It has a large number of through-holes and / or non-through-holes with fine dimensions, and it is possible to form a plurality of strip-shaped perforated areas along the width direction of the long film at desired intervals, and to perform the perforating operation. An object of the present invention is to provide a porous film manufacturing apparatus that can be continuously performed for a long time.

Further, the present invention is applicable to a long film made of various materials such as organic polymers and metals, with a sub-μm or less, without substantially impairing the inherent characteristics of the film material.
It has a large number of through-holes and / or non-through-holes having fine dimensions of several tens of μm, and it is possible to form one or more strip-shaped perforated regions along the length direction of the long film, and to perform the perforating operation. An object of the present invention is to provide a porous film manufacturing apparatus that can be continuously performed for a long time.

Further, the present invention is applicable to a long film made of various materials such as an organic polymer and a metal, with a sub-μm
It has a large number of through-holes and / or non-through-holes having fine dimensions of up to several tens of μm, it is possible to form a grid-like perforated region in the length direction of the long film, and the perforating operation can be performed for a long time. It is an object of the present invention to provide an apparatus for producing a porous film which can be continuously carried out over a period of time.

[0009]

According to the present invention, there is provided an apparatus for producing a porous film, comprising: supply means for supplying a long film; a plurality of particles having a sharp corner and having a Mohs hardness of 5 or more are adhered to the surface. Rotatable first roll and the first roll
A second roll rotatable in the opposite direction with respect to the first roll, the second roll having a surface, which is in contact with a large number of particles of the roll and partially sandwiching the long film therebetween, , The second rolls are arranged so that their outer peripheral surfaces face each other, the long film is passed between them, one of the rolls is fixed, and the other is moved with respect to the one roll. A perforating unit freely disposed; the movable roll faces the fixed roll, and the distance between the tip of the particles of the first roll and the contact surface of the second roll is greater than the thickness of the long film. A pressure adjusting means for pressing to a position where the rolls become smaller; and a driving means for rotating the first and second rolls; wherein the second rolls are guide rolls arranged near both ends, These guides Formed on the outer peripheral surface between Le and is characterized in that it comprises a convex portion forming a strip having an arcuate surface of the outer peripheral surface flush with the guide roll.

[0010] Another apparatus for producing a porous film according to the present invention is a supply means for supplying a long film; a rotatable roller having a large number of particles having a Mohs hardness of 5 or more having sharp corners adhered to the surface. A first roll, and a second roll rotatable in the opposite direction to the first roll, the outer periphery of which has a surface partially contacting a large number of particles of the first roll with the long film therebetween. Rolls, the first and second rolls are arranged so that their outer peripheral surfaces face each other, the long film passes between them, one of the rolls is fixed, and the other is fixed. A punching unit movably disposed with respect to the one roll; a distance between a particle tip of the first roll and the contact surface of the second roll with the movable roll facing the fixed roll; Is greater than the thickness of the long film A pressure adjusting means for pressing to a position to be lowered; and a driving means for rotating the first and second rolls, wherein the second roll has a cylindrical roll main body and a roll main body. Guide rings respectively fitted near both ends, and fitted at a desired interval with respect to the guide ring at the roll body portion located between these guide rings, and the outer periphery is the same as the outer periphery of the guide ring. At least one working ring having a diameter, and an adjusting ring fitted to the roll body portion located between the working ring and the guide ring, and having an outer periphery having a smaller diameter than an outer periphery of the guide ring. It is a feature.

[0011] Still another apparatus for producing a porous film according to the present invention is a supply means for supplying a long film;
A rotatable first roll having a large number of particles having a Mohs hardness of 5 or more having sharp corners adhered to the surface, and a plurality of particles of the first roll are partially contacted with the long film interposed therebetween. A second roll rotatable in a direction opposite to that of the first roll, the first and second rolls being arranged so that their outer peripheral surfaces face each other. A unit for perforation in which one of the rolls is fixed and the other is movably arranged with respect to the one roll, while the long film is passed between the rolls; Pressure adjusting means for pressing the first roll to a position where the distance between the particle tip of the first roll and the contact surface of the second roll is smaller than the thickness of the long film; Drive for rotating the roll Means, the second roll comprises a cylindrical roll main body, guide rings fitted near both ends of the roll main body, and the guide provided on the roll main body portion located at these guide rings. At least one first working ring fitted at a desired interval to the ring and having an outer circumference having the same diameter as the outer circumference of the guide ring; and the first working ring positioned between the first working ring and the guide ring. Fitted to the roll body,
A belt-shaped convex portion having an arc-shaped surface flush with the outer peripheral surface of the guide ring is provided with at least one second processing ring formed along its length direction. is there.

In the above-mentioned apparatus for producing a porous film, the particles having a Mohs hardness of 5 or more are preferably natural or synthetic diamond particles.

In each of the porous film manufacturing apparatuses, the perforating unit is configured such that the first and second rolls are arranged horizontally next to each other, the first roll is fixed, and the second roll is Preferably, it is movable with respect to the first roll.

In the apparatus for manufacturing a porous film having such a perforation unit, the pressure adjusting means may include a backup roll horizontally arranged on the opposite side of the first roll from the second roll, A roll arranged horizontally on the opposite side of the first roll from the roll, and at least one pressure roll arranged horizontally for pressing the roll toward the second roll; Is preferred.

In each of the porous film manufacturing apparatuses, the driving means includes a first rotation driving member for rotating the first roll, and a first angle detecting member for detecting a rotation angle of the first roll. A second rotation driving member for rotating the second roll; a second angle detection member for detecting a rotation angle of the second roll;
The rotation angle from the angle detection member and the detection signal of the second angle detection member are input, and the angular velocity of the second roll by the second rotation drive member is determined based on the rotation angle detection signals. And a control member for controlling the angular velocity to be equal to

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for producing a porous film according to the present invention will be described in detail with reference to the drawings.

(First Embodiment) FIG. 1 is a perspective view showing an apparatus for manufacturing a porous film according to the first embodiment, and FIG.
(A) is a partially cutaway front view showing a second roll incorporated in the manufacturing apparatus of FIG. 1, and (B) of FIG.
FIG. 3 is a cross-sectional view taken along a line B, FIG. 3 is a perspective view showing a driving mechanism of the manufacturing apparatus in FIG. 1, FIG. 4 is a schematic perspective view for explaining the operation of the manufacturing apparatus in FIG. 1, and FIG. FIG. 6 is a cross-sectional view showing a state in which a through-hole and a non-through-hole are partially perforated in a long film between the first and second rolls of FIG. It is sectional drawing which shows the non-perforation state of.

The main gantry 1 shown in FIG.
It has a U-shaped table composed of 2b and 2c. A pair of long guide members 3a and 3b are installed in parallel on the upper surfaces of the opposed table portions 2a and 2c. The pair of two rectangular support blocks 4 and 5 are sequentially engaged with the pair of guide members 3a and 3b from the near side in FIG. 1, respectively, and are movably disposed along the guide members 3a and 3b. Have been. A pair of first and second boxes 6 and 7 each having a built-in bearing are provided with the support blocks 4 and 5.
Each is fixed above.

The first roll 10 has shafts 11 protruding from both end surfaces thereof, and these shafts 11 are connected to the first pair of the pair.
It is rotatably disposed between the paired first boxes 6 by being supported by bearings (not shown) in the box 6. The first roll 10 has a structure in which a metal roll main body and a number of particles having a Mohs hardness of 5 or more having sharp corners on the surface of the roll main body are electrodeposited or adhered with an organic or inorganic binder. Having. The metal roll body is formed of, for example, iron and an iron alloy, or a surface coated with a nickel plating layer or a chromium plating layer. As the particles having a Mohs hardness of 5 or more,
For example, cemented carbide particles such as tongue ten carbide, or silicon carbide particles, boron carbide particles, sapphire particles,
Examples thereof include cubic boron nitride (CBN) particles, natural and synthetic diamond particles, and the like. In particular, synthetic diamond particles having high hardness and strength are desirable. The particles have a particle size of 10 to 100 μm and a particle size variation of 5%.
It is desirable to use the following. It is desirable that the large number of particles adhere to the roll body surface at 70% or more. Specifically, as shown in FIG. 5, the first roll 10 is composed of a nickel-based electrodeposition layer 14 having an area ratio of 70% or more of a large number of synthetic diamond particles 13 having sharp corners on the surface of an iron roll body 12. It is connected and fixed through.

The second roll 20 has shafts 201 protruding from both end surfaces thereof, and these shafts 201 are pivotally supported by bearings (not shown) in the paired second box 7. It is rotatably disposed between the paired second boxes 7 and is adjacent to the first roll 10. As shown in FIGS. 2A and 2B, the second roll 20 has a pair of cylindrical guide rolls 202a and 202b to which the shaft 201 is integrally attached. These guide rolls 202a and 202b are on the opposite side of the shaft 201,
That is, the small-diameter cylindrical portions 203a and 203
b is formed, thereby forming a ring-shaped step near the center. The sleeve 204 has small diameter cylindrical portions 203 of the guide rolls 202a and 202b near both ends thereof.
a, 203b. The sleeve 204
Are the guide rolls 202a, 2 on each shaft 201 side.
A plurality of screws (not shown) are fixed to the guide rolls 202a and 202b by screwing a plurality of screws (not shown) from the end surface of the sleeve 204 to the both end surfaces of the sleeve 204. The sleeve 204 is formed of, for example, the guide rolls 202a and 202b.
For example, four strips having an arc-shaped surface flush with the outer peripheral surfaces of the guide rolls 202a and 202b by cutting a cylindrical body having an outer periphery having the same diameter as the outer periphery of each of the end surfaces thereof in four lengthwise directions. Are formed at intervals of 90 °. The number of the convex portions is not limited to four, and may be formed on the sleeve at a desired angle of 1 to 3 or 5 or more.

The first roll 10 and the second roll 20 constitute a punching unit.

The first and second rolls 10 and 20 are rotated by a driving mechanism 30 shown in FIG. That is, the drive mechanism 30 includes the first motor 31. A gear 33 is axially mounted on the tip of the drive shaft 32 of the first motor 31. The gear 33 is meshed with a speed change gear 35 that is axially mounted on one end of a rotating shaft 34. The rotation shaft 34
A drive-side pulley 36 is mounted on the other end of the shaft. The pulley 36 is pivotally supported via a belt 38 on a driven pulley 37 located above the pulley 36. The driven pulley 37 has the shaft 11 positioned at one end (for example, right end) of the first roll 10 and protruding through the first box 6. The first angle detection encoder 39 pivotally supports, via a belt 41, a shaft 40 protruding from the right end face of the driven pulley 37, and detects the rotation angle of the driven pulley 37. Also,
The drive mechanism 30 includes a second motor 42. A gear 44 is axially mounted on a tip of a drive shaft 43 of the second motor 42. The gear 44 is meshed with a speed change gear 46 that is axially mounted on one end of a rotating shaft 45. The rotating shaft 4
A driving pulley 47 is mounted on the other end of the shaft 5. The pulley 47 is pivotally supported by a driven pulley 48 located above the pulley 47 via a belt 49.
A universal shaft 50 is attached to the driven pulley 48 so as to be connected to a shaft 201 at one end (for example, a right end) of the second roll 20 in the second box 9. The second angle detection encoder 51 pivotally supports, via a belt 53, a shaft 52 protruding from the right end face of the driven pulley 48, and detects the rotation angle of the driven pulley 48. The controller 54 is connected to the first angle detection encoder 39 and the second angle detection encoder 51, and receives detection signals from the encoders 39 and 51, respectively. The controller 54 is connected to the second motor 42.

In the driving mechanism 30 having such a configuration,
When the drive shaft 32 is rotated clockwise by the first motor 31, the transmission gear 35 meshed with the gear 33 at the tip of the drive shaft 31 is rotated counterclockwise. By the rotation of the transmission gear 35 in the counterclockwise direction, the rotation shaft 34 mounted on the transmission gear 35 is rotated in the same direction, and the driving pulley 36 mounted on the rear end thereof is rotated in the same direction,
The shaft 11 of the first roll 10 is transmitted via a belt 38 to a driven pulley 37 on which the shaft 11 is mounted.
Is rotated counterclockwise. At this time, the rotation speed of the first roll 10 is controlled by a first shaft pivotally supported by a shaft 40 protruding from an end surface of the driven pulley 37 via a belt 41.
The angle is detected by the angle detection encoder 39, and the detection signal is output to the controller 54. On the other hand, when the drive shaft 43 is rotated in the counterclockwise direction by the second motor 42, the speed change gear 46 meshed with the gear 44 at the tip of the drive shaft 43.
Is rotated clockwise. The rotation of the transmission gear 46 in the clockwise direction causes the rotation shaft 45 mounted on the transmission gear 46 to rotate in the same direction, and the driving pulley 47 mounted on the rear end of the rotation gear 45 rotates in the same direction. The universal shaft 50 connected to the shaft 201 of the second roll 20 is transmitted to the driven pulley 48 to which the shaft is attached, and the second roll 20 is rotated clockwise. At this time, the rotation speed of the second roll 20 is detected by a second angle detection encoder 51 pivotally supported via a belt 53 on a shaft 52 protruding from an end surface of the driven pulley 48,
The detection signal is output to the controller 54. The controller 54 controls the second motor 42 so that the angular velocity of the second roll 17 by the second motor 42 becomes equal to the angular velocity (feed speed) of the first roll 10 based on the detection signals of the rotation angles. A signal is output to control the rotation speed of the second motor 42.

The pressure adjusting mechanism 60 is disposed near the main frame 1 and an auxiliary frame described later. That is, the two rectangular support blocks 61, 62 forming a pair are sequentially engaged with the pair of guide members 3a, 3b from the second roll 20 side in FIG. 1 toward the back side in FIG. 1, respectively, and They are arranged movably along the guide members 3a, 3b. Two short guide members (not shown) are installed in the vicinity of the center of the table portion 2b at a fixed interval in parallel with the guide members 3a and 3b. Two rectangular support blocks (not shown) are respectively engaged with the short guide members (not shown) and are movably arranged along the short guide members. A pair of third boxes 63 each having a built-in bearing are fixed on the support block 61. 2 with built-in bearing
The paired fourth box 64 is provided with the support block 6.
2 and a support block (both not shown) engaged with the short guide member.

The second to fourth boxes 7, 63, 63 arranged side by side along the guide members 3a, 3b.
64 is a connecting plate (not shown) having a long hole disposed on the upper surface thereof and the boxes 7, 6 from the long hole.
3, 64 are connected by screws (not shown) screwed to the upper surface.

For example, the contact roll 65 whose surface is covered with a urethane rubber sheet has shafts (not shown) protruding from both end surfaces thereof as shown in FIG. The third box 6 is rotatably supported by a bearing (not shown) in the third box 63.
3 and is adjacent to the second roll 20.

For example, the two pressure rolls 66a and 66b whose surfaces are covered with a urethane rubber sheet have shafts (not shown) projecting from both end surfaces thereof as shown in FIG. The shafts are respectively supported by bearings (not shown) in the two pairs of fourth boxes 64, so that the two pairs of fourth boxes 6 can rotate freely.
4 and the contact roll 6
Adjacent to 5.

The two back plates 67a and 67b are provided with two left fourth boxes 6 out of the four fourth boxes 64.
The fourth box 64 is attached to the back of the four fourth boxes 64 on the right and the back. The U-shaped frame 68 is provided with the back plate 6.
7a and 67b are arranged at a desired distance on the back side. Two screw support boxes 69a, 69b
Is attached to the front surface of the U-shaped frame 68. Two screws 70a, 70b extending perpendicularly and horizontally to the surfaces of the back plates 67a, 67b are supported through the screw support boxes 69a, 69b, respectively. These screws 70a, 70
Pressing bodies 71a and 71b which are urged toward the back plates 67a and 67b by a coil spring (not shown) are attached to the front ends of the b at the side of the back plates 67a and 67b. The two variable motors 72a, 72b have their drive shafts 73a, 73b connected to the screw support box 69.
a, 69b penetrates through the upper surfaces of the drive shafts 73 in the boxes 69a, 69b.
A worm gear (not shown) axially mounted on the shafts a and 73b is engaged with a worm gear (not shown) axially mounted on the screws 70a and 70b. That is, when the variable motors 72a and 72b are rotated, the screws 70a and 70b are rotated via the worm gear meshed with each other.
b moves forward toward the back plates 67a and 67b while rotating, and the pressing body 71 at the tip of the screws 70a and 70b is rotated.
a, 71b are in contact with the back surfaces of the back plates 67a, 67b and press (press).

The auxiliary gantry 74 is arranged adjacent to the main gantry 1 where the first roll 10 is located as shown in FIG. The pair of short guide members 75a and 75b are installed in parallel on the upper surface of the auxiliary gantry 74 at regular intervals. A pair of rectangular support blocks 7
Numeral 6 is engaged with the pair of guide members 75a, 75b, respectively, and is disposed movably along the guide members 75a, 75b. A pair of boxes 77 with built-in bearings are fixed on the support block 76, respectively. For example, a backup roll 78 whose surface is covered with a urethane rubber sheet has shafts (not shown) projecting from both end surfaces thereof, and these shafts are connected to bearings (not shown) in the box 77 forming the pair. By pivoting on
It is rotatably arranged between the paired boxes 77. The two rectangular blocks 80 to which the blanket 79 is fixed on the upper surface are fixed on the auxiliary frame 74 so as to be adjacent to the left side of the box 77 located on the left side and the right side of the box 77 located on the right side. Have been. The two spring boxes 81 are fixed on the blanket 79 so that the coil springs 82 contained therein face the first roll 10. The two L-shaped frames 83 are attached to the left side surface of the box 77 located on the left side and the right side surface of the box 77 located on the right side such that the other frame surfaces abut on the coil spring 82.

A long film 90 supplied from a long film supply source, for example, a roll of long film (not shown), passes between the first and second rolls 10 and 20 to form a roll 10 between the first and second rolls 10 and 20. , 20 are passed upward from below.

Examples of the film include general-purpose organic polymer films such as polyethylene, polypropylene, polyethylene terephthalate, polyester, polyvinyl chloride, polyester, fluororesin, and polyamide; engineering plastic films such as polycarbonate and polyimide; and polyetheretherketone. ,
Elongated film of super engineering plastic such as polyetherketone; elastomer film, or polyethylene foam film, ethylene-vinyl acetate copolymer foam film, polystyrene foam film, mixed foam film of polyethylene and polyvinyl acetate,
Organic polymer foam film with countless closed cells such as polyurethane foam film, other heat-fusible organic polymer film, foamed paper; inorganic polymer such as silica powder, carbon powder, alumina powder mixed with organic polymer Composite film; laminated film in which two or three layers of organic polymer films of different materials are laminated, laminated film in which woven fabric, nonwoven fabric or paper is laminated on organic polymer film, organic polymer foam film having countless closed cells A laminated film obtained by laminating a woven fabric, a nonwoven fabric, or a paper, a laminated film obtained by laminating a metal foil such as an aluminum polymer or a copper foil on an organic polymer film; and a metal film such as an aluminum film or a copper film. .

The long film is usually 3.5 μm to 3.5 μm.
One having a thickness of 10 mm can be used.

As the supply means for supplying the long film, in addition to the roll on which the various films are wound, when the long film is made of an organic polymer, the supply means is an inflation method. A film manufacturing machine or a film manufacturing machine by a casting method can be used.

Next, a method for producing a porous film by the above-described apparatus for producing a porous film will be described.

The variable motors 72a and 72b of the pressure adjusting mechanism 60 shown in FIG. 1 are rotated in the reverse direction to be axially mounted on the drive shafts 73a and 73b and the screws 70a and 70b in the screw support boxes 69a and 69b, and engaged with each other. The screw 70 through a worm gear (not shown)
a, 70b while rotating the two back plates 67a, 67b
When the pressing members 71a, 71b at the tips of the screws 70a, 70b are separated from the back surfaces of the back plates 67a, 67b, the back plate 67a is repelled by a coil spring incorporated in the pressing members 71a, 71b. , 67b on the rectangular block (not shown) engaged with the short guide member (not shown) and two fourth boxes 64 on the rectangular block 62 engaged with the long guide members 3a, 3b. Retreat with the four fourth boxes 64, and the two pressure rolls 66a and 66b between the fourth boxes also retract. When the four fourth boxes 64 are retracted, the third and second boxes 63, 7 connected by a connecting plate (not shown) are connected to the long guide members 3a, 3b via rectangular blocks 61, 5 supporting them. And the contact roll 65 and the second roll 20 between the third and second boxes 63 and 7 are also retracted so that the desired roll is formed between the second roll 20 and the first roll 10 adjacent thereto. A gap is formed.
In the retreating operation of the second roll 20, since the universal shaft 50 is disposed at the connection portion with the drive mechanism 30 as shown in FIG.
It does not hinder the backward movement.

In this state, a long film 90 made of, for example, polyethylene terephthalate (PET) supplied from a roll of long film (not shown) is used as shown in FIG.
As shown in FIG. 4, between the first roll 10 and the area (sleeve 24) inside the guide rolls 202a and 202b of the second roll 20, the rolls 10, 2
0 is passed upward from below and wound up on a winding roll (not shown) above the main gantry 1. The long film 9
0 is passed between the first and second rolls 10 and 20, and then the variable motors 72a and 72b are rotated forward to rotate the screws 70a and 70b via the intermeshing form gears. The back plate 67a, 67b
, And the pressing members 71a, 71b at the tips of the screws 70a, 70b are brought into contact with the back surfaces of the back plates 67a, 67b to be pressed (pressed). By this operation, 4
Pressure rollers 66 located between the four fourth boxes
a and 66b advance toward the first roll 10, and the contact roll 65 between the adjacent third boxes 63 is pressed by the pressure rollers 66a and 66b. The pressing force of the contact roll 65 is transmitted to the second roll 20 between the adjacent second boxes 7 over the entire length thereof.
Furthermore, the second roll 20 presses against the fixed first roll 10 between the adjacent first boxes 6. At this time, a spring box 81 is provided on the back of the first roll 10.
Backup roll 7 urged by coil spring 82 inside
8, the first and second rolls 1
The long films 90 are uniformly pressed over their entire width direction without the 0 and 20 being bent. Specifically, the tips of a number of the synthetic diamond particles 13 electrodeposited on the surface of the first roll 10 and the surface of the convex portion 205 of the second roll 20 are brought close to a distance shorter than the thickness of the long film 90. The long film 90 is pressed uniformly over the entire width direction. The preparation of the punching operation is completed by applying the pressing force to the long film 90 located between the first and second rolls 20 by the pressure adjusting mechanism 60.

After the preparation for the drilling operation is completed, the drive shaft 32 is rotated clockwise by the first motor 31 of the drive mechanism 30 shown in FIG. The transmission gear 35 is rotated counterclockwise. The rotation of the transmission gear 35 in the counterclockwise direction causes the rotation shaft 34 attached to the transmission gear 35 to rotate in the same direction, and the driving pulley 36 attached to the rear end of the transmission gear 35 to rotate in the same direction. The shaft 11 of the first roll 10 via 38
Is transmitted to the driven pulley 37 on which the shaft is mounted, and the first roll 10 is rotated in the counterclockwise direction. At this time, the rotation speed of the first roll 10 is detected by a first angle detection encoder 39 pivotally supported via a belt 41 on a shaft 40 protruding from an end surface of the driven pulley 37, and the detection signal is Output to the controller 54. On the other hand, the drive shaft 43 is rotated in the counterclockwise direction by the second motor 42, and the transmission gear 46 meshed with the gear 44 at the end of the drive shaft 43 is rotated in the clockwise direction. The rotation of the transmission gear 46 in the clockwise direction causes the rotation shaft 45 attached to the transmission gear 46 to rotate in the same direction, and the drive pulley 47 attached to the rear end thereof to rotate in the same direction. The universal shaft 50 connected to the shaft 201 of the second roll 20 is transmitted to the driven pulley 48 on which the second roll 20 is axially mounted, and rotates the second roll 20 clockwise. At this time, the rotation speed of the second roll 20 is detected by a second angle detection encoder 51 pivotally supported via a belt 53 on a shaft 52 protruding from an end surface of the driven pulley 48,
The detection signal is output to the controller 54. The controller 54 outputs a signal to the second motor 42 based on the detection signals of the rotation angles so that the angular velocity of the second roll 17 by the second motor 42 becomes equal to the angular velocity of the first roll 12. , The second motor 42
To control the rotation speed of the. By rotating the first roll 10 in the counterclockwise direction and the second roll 20 in the clockwise direction, the long film 90 passing between the rolls 10 and 20 is partially perforated.

That is, as shown in FIGS. 5 and 6, the first roll 10 is made of an iron roll body 11 having a large number of synthetic diamond particles 13 having sharp corners electrodeposited on the surface at an area ratio of 70% or more. It has the structure provided with. As shown in FIG. 2, the second roll 20 is fitted with a pair of cylindrical guide rolls 202a and 202b and these guide rolls 202a and 202b.
For example, it has a structure having a sleeve 24 in which, for example, four belt-shaped convex portions 205 having arc-shaped surfaces flush with the outer peripheral surfaces of the a and 202b are formed at 90 ° intervals. As shown in FIG. 4, the second roll 20 is turned toward the first roll 10 by the
5 to the position where the distance between the surface and the front end of the synthetic diamond particles 13 is smaller than the thickness of the long film 90 and less than zero, and the rolls 10 and 20 are rotated in opposite directions to rotate the second roll 20. As shown in FIG. 5, when the belt-like convex portion 205 along the length direction is positioned so as to face the first roll 10 with the long film 90 interposed therebetween, the long film 90 becomes the convex portion. 2
05 and the sharp corners of the synthetic diamond particles 13. For this reason, the sharp corners of the synthetic diamond particles 13 facing the band-like convex portions 205 selectively and fixedly penetrate the long film 90 to perform mechanical perforation.

On the other hand, the region between the belt-like convex portions 205 along the length direction of the second roll 20 is opposed to the first roll 10 with the long film 90 interposed therebetween as shown in FIG. When positioned, the first rolls 10 are at their ends at the convex portions 2 at both ends of the second roll 20.
Since the long film 90 is rotated while being in contact with the guide rolls 202a and 202b flush with the surface of the first roll 10, the long film 90 has a convex portion 205 separated from the sharp corners of the large number of synthetic diamond particles 13 of the first roll 10. Pass through the area between. Therefore, the long film 90 passes between the first and second rolls 10 and 20 without being perforated by a large number of the synthetic diamond particles 13.

A perforating operation (shown in FIG. 5) and a non-perforating operation (shown in FIG. 6) on the long film 90 by sharp corners of a large number of synthetic diamond particles 13 electrodeposited on the surface of the first roll 10. In any case, the first roll 10 has guide rolls 20 at both ends thereof which are flush with the surface (arc surface) of the convex portion 205 of the second roll 20.
2a and 202b, these rolls 1
0, 20 can be rotated stably and smoothly. As a result, the long film 90 can be smoothly fed out from between the first and second rolls 10 and 20,
At the time of partial perforation of the long film 90, the roll 10,
It can be prevented from being broken by being engaged between the two.

4 and 7 by the above-described drilling operation.
As shown in FIG.
In addition, it is possible to manufacture a long porous film 94 in which band-shaped perforated regions 93 along the width direction of the film 90 in which the non-through holes 92 are perforated are formed at predetermined intervals.

The pressing force of the second roll 20 against the first roll 10 by the pressure adjusting mechanism 60 is weakened to mainly increase the distance between the first and second rolls 10 and 20 as compared with the above-described embodiment. This makes it possible to form a band-shaped perforated region consisting of only the non-through holes in the long film.

As described above, according to the first embodiment, a polymer material,
For a long film made of various materials including metals, the original characteristics of the film material (for example, in the case of an organic polymer film, softness and transparency, etc.) are hardly impaired, and short films as in the prior art are used. Having a large number of through-holes and / or non-through-holes having a sub-micrometer to several tens of micrometer micro-dimensions without interposing an organic polymer sheet having elasticity that breaks with time between the first and second rolls, Manufacture of a porous film capable of forming a plurality of strip-shaped perforated regions along the width direction of the long film at desired intervals and performing the perforating operation continuously for a long time An apparatus can be provided.

Further, a backup roll 78 is provided on the first roll 10 side and a contact roll 65 is provided on the second roll 20 side with the first and second rolls 10 and 20 disposed horizontally adjacent to each other therebetween. By using the pressure adjusting mechanism 60 in which the rolls 66a and 66b are arranged, the bending of the first and second rolls 10 and 20 can be suppressed or prevented. It is possible to make the depth of a large number of through holes or non-through holes drilled constant.

Further, by using the drive mechanism 30 including the first and second angle detection encoders 39 and 51 and the controller 54, the second roll having the belt-shaped convex portion can be separated into another belt-shaped convex roll. Even if it is replaced with a second roll having a diameter different from that of the second roll, the angular velocity (feed speed) of the replaced second roll and the Mohs hardness such as synthetic diamond 5
It is possible to make the angular velocity (feed speed) with the first roll to which the above particles are attached equal. As a result, it is possible to prevent the long film from being bitten or broken during the punching operation.

Such a porous film is, for example, shown in FIG.
Can be effectively used as a film material for easily tearable packaging bags. That is, the easily tearable packaging bag 101 folds a laminated film 102 obtained by laminating a sealant film, an aluminum foil, and, for example, a PET film, and folds the folded film 1.
03 and two sides adjacent thereto are heat-sealed to form a sealing portion 104.
a and 104b are formed into a bag shape, and after contents such as snacks are stored therein, the opening portion is heat-sealed to form a seal portion 104c. The PET film is formed by the above-described porous film manufacturing apparatus, and is formed such that a band-shaped perforated region 105 having a large number of through holes is parallel to the seal portion 104c to be opened. . A V-cut portion 106 is formed at an end (on the side of the seal portion 104a) of the band-shaped perforated region 105.

The easily tearable packaging bag 1 having the structure shown in FIG.
No. 01 can be easily torn along the band-shaped perforated area 105 from the location of the V-cut portion 106 as a tearing starting point. That is, the contents can be taken out by tearing open the package in parallel and linearly to the seal portion 104c. In addition, when a packaging bag is made from a long film, a film material cut in the length direction of the long film and further cut so that the side serving as an opening portion is in the width direction of the long film is used. For this reason, forming the band-shaped perforated region in the width direction of the long film by the above-described manufacturing apparatus requires the easily tearable packaging bag in which the band-shaped perforated region is arranged in parallel with the side of the opening as shown in FIG. It is useful in manufacturing.

Further, since the band-shaped perforated region 105 composed of a large number of through holes is formed only partially in the packaging bag 101, the strength of the packaging bag itself can be prevented from being reduced. In addition, it becomes possible to print a desired pattern or the like on a PET film as an outer layer film.

The layer structure of the laminated film in the easily tearable packaging bag is not limited to three layers, but may be a laminated film having a two-layer structure of a sealant film for accommodating a liquid product and a nylon film having a band-shaped perforated region (for example, A gusset-type bag material) may be used.

In the easily tearable packaging bag, the band-shaped perforated region is not limited to one, and may be formed in parallel with two or more opened seal portions.

Further, the porous film can be effectively used as a film material (outer layer film) of a packaging bag for storing contents that release carbon dioxide during fermentation and ripening, for example, kimchi and miso.

Further, the porous film can be effectively used as a film material (laminated film) of a packaging bag of a standing pouch type for storing contents compatible with a microwave oven, for example, instant curry and the like. In this packaging bag, a band-shaped perforated region comprising a large number of through-holes is formed on the upper side of a laminated film of a sealant film and a nylon film, for example, and steam is externally applied from the through-holes of the band-shaped perforated region to the microwave oven. Easily escapes, inflates the bag,
It is possible to prevent rupture.

Further, the porous film can be effectively used as a film material of a packaging bag for storing fruits and vegetables to be kept fresh.

(Second Embodiment) FIG. 9A is a partially cutaway front view showing a second roll incorporated in the porous film manufacturing apparatus according to the second embodiment, and FIG. FIG. 10A is a sectional view taken along the line BB of FIG. 10A, and FIG. 10 is a schematic perspective view for explaining the operation of the apparatus for manufacturing a porous film incorporating the second roll of FIG. In FIG. 10, the same members as those in FIGS. 1 and 4 described above are denoted by the same reference numerals, and description thereof will be omitted.

The second roll 20 rotatably arranged adjacent to the first roll is mounted on a pair of second boxes (not shown) each having a built-in bearing as shown in FIG. 9A. A cylindrical roll body 206 having shafts 201 to be supported at both ends.
It has. Two guide rings 207a and 207b each having a single-sided cylindrical shape are fitted near both ends of the roll body 206, and a plurality of screws are screwed into the roll body 2 from the single-sealed portions of the guide rings 207a and 207b.
06, it is fixed to the main body 206. For example, three processing rings 208a to 208c
The guide rings 207a, 207b are provided on the roll body 206 except for the guide rings 207a, 207b.
Are fitted at a desired interval from each other and at a desired interval from each other. Each processing ring 208a
To 208c, the outer circumference is the guide ring 207a, 20c.
7b has the same diameter as the outer circumference. Four adjustment rings 20
9a to 209d are the processing rings 208a to 208c.
And the roll main body 206 located between the guide ring 207a and the guide ring 207b. These adjustment rings 209a to 209d have outer diameters smaller than the outer circumferences of the guide rings 207a and 207b.

The outer peripheral surface of the roll body 206
(B), the arc-shaped groove 210 is formed along the axial direction. The processing rings 208a to 208
9B, an arc-shaped groove 2 is formed on the inner peripheral surface as shown in FIG.
11 are formed along the axial direction. The guide rings 207a and 207b and the adjustment ring 20
On the inner peripheral surfaces of 9a to 209d, arc-shaped grooves (not shown) are formed along the axial direction. Lock pin 212
Are arc-shaped grooves 210 on the outer peripheral surface of the roll main body 206, arc-shaped grooves (not shown) on the inner peripheral surfaces of the guide rings 207a and 207b, and arc-shaped grooves (not shown) on the inner peripheral surfaces of the adjustment rings 209a to 209d. ) And the working ring 208a
２０８208c are inserted into an elongated columnar portion formed by matching with the arc-shaped groove 211 on the inner peripheral surface. As described above, by inserting a plurality of screws into the roll body 206 from the one-side sealed portions of the guide rings 207a and 207b after the insertion of the detent pin 212,
The guide rings 207a and 207b are attached to the main body 206.
And the processing rings 208a to 208
c and the adjustment rings 209 a to 209 d can be fixed at predetermined positions without rotating with respect to the roll body 206.

The number of working rings fitted to the roll body is not limited to three, but may be one, two or four or more.

In the apparatus for manufacturing a porous film incorporating the second roll 20 having such a configuration, as shown in FIG. 10, for example, polyethylene terephthalate (PET) supplied from a roll of a long film (not shown) is used. ) Of the first film 10 and the second film 20 on the inner side of the guide rings 207a and 207b (the processing rings 208a to 208c and the adjustment ring 2).
09a to 09d), the rolls 10 and 20 are passed upward from below, and wound up on a winding roll (not shown). Subsequently, the second roll 20 is moved to the first roll 10 by the pressure adjusting mechanism in the same manner as in the first embodiment.
At a predetermined pressure. Thereafter, the drive mechanism is operated to rotate the first roll 10 in a counterclockwise direction and the second roll 20 in a clockwise direction.
Processing rings 208a to 208c fitted at predetermined intervals in the length direction of the second roll 20 have the first roll 1 sandwiching the long film 90 as shown in FIG.
0, the long film 9
0 is sandwiched between the processing rings 208a to 208c and the sharp corners of the synthetic diamond particles 13. For this reason, the sharp corners of the synthetic diamond particles 13 facing the processing rings 208a to 208c selectively penetrate the long film 90 to a certain depth to perform mechanical perforation. As a result, it is possible to manufacture a long porous film 94 in which strip-shaped perforated regions 95 along the length direction of the film 90 in which a large number of through holes and non-through holes are perforated are formed at predetermined intervals.

The first roll 10 is provided at both ends thereof with the processing rings 208a-208 of the second roll 20.
Since the rolls 10 and 20 are in contact with the guide rings 207a and 207b flush with the roll 208c, the rolls 10 and 20 can be rotated stably and smoothly. As a result, the long film 90 can be smoothly fed out from between the first and second rolls 10 and 20, so that the long film 90
Bite between the rolls 10 and 20 at the time of partial perforation,
Breaking can be prevented.

It is to be noted that the pressing force of the second roll 20 against the first roll 10 by the pressure adjusting mechanism is weakened to mainly increase the distance between the first and second rolls 10 and 20 as compared with the above-described embodiment. Thereby, it becomes possible to form a band-shaped perforated region consisting only of non-through holes in a long film.

As described above, according to the second embodiment, the polymer material,
For a long film made of various materials including metals, the original characteristics of the film material (for example, in the case of an organic polymer film, softness and transparency, etc.) are hardly impaired, and short films as in the prior art are used. Having a large number of through-holes and / or non-through-holes having a sub-micrometer to several tens of micrometer micro-dimensions without interposing an organic polymer sheet having elasticity that breaks with time between the first and second rolls, A porous film capable of forming a plurality of band-shaped perforated regions along the length direction of the long film at desired intervals and capable of continuously performing the perforating operation for a long time. A manufacturing apparatus can be provided.

Such a porous film is, for example, shown in FIG.
The film material of the easily tearable packaging bag, the contents that release carbon dioxide in the course of fermentation and ripening, such as the film material of the packaging bag containing kimchi and miso (outer layer film), the contents compatible with microwave oven, for example It can be effectively used as a film material (laminated film) of a standing pouch-type packaging bag for storing instant curries and the like, and a film material for a packaging bag for storing fruits and vegetables to be kept fresh.

(Third Embodiment) FIG. 11A is a partially cutaway front view showing a second roll incorporated in the porous film manufacturing apparatus according to the third embodiment, and FIG. 11A is a sectional view taken along line BB, FIG. 11C is a sectional view taken along line CC in FIG. 11A, and FIG. 12 incorporates the second roll of FIG. FIG. 4 is a schematic perspective view for explaining the operation of the porous film manufacturing apparatus. In FIG. 12, the same members as those in FIGS. 1 and 4 described above are denoted by the same reference numerals, and description thereof will be omitted.

The second roll 20 rotatably disposed adjacent to the first roll is mounted on a pair of second boxes (not shown) each having a built-in bearing as shown in FIG. Column-shaped roll body 20 having shafts 201 supported at both ends
6 is provided. Two guide rings 207a and 207b each having a single-sided cylindrical shape are fitted near both ends of the roll body 206, and a plurality of screws are screwed into the roll body 206 from the single-sided portions of the guide rings 207a and 207b. It is fixed to the main body 206 by wearing. For example, the three processing rings 208a to 208c, which are the first processing rings, are provided with the guide rings 207a and 207a.
The guide rings 207a and 207b are fitted in the roll main body 206 except for the part 07b at a desired distance from the guide rings 207a and 207b. The outer circumference of each of the processing rings 208a to 208c has the same diameter as the outer circumference of the guide rings 207a and 207b. Sleeves 204a-2 as four second processing links
04d is fitted to the roll main body 206 located between the processing rings 208a to 208c and the guide rings 207a and 207b. Each sleeve 2
For example, 04a to 204d are obtained by cutting a cylindrical body having an outer circumference having the same diameter as the outer circumferences of the guide rings 207a and 207b from four opposing end faces thereof in the length direction as shown in FIG. Guide ring 207a, 2
07b having an arc-shaped surface flush with the outer peripheral surface of
Two strip-shaped convex portions 205 are formed at intervals of 90 °. The number of the convex portions is not limited to four, but is
Three or five or more desired angles may be formed on each of the sleeves.

As shown in FIG.
As shown in FIGS. 1B and 1C, an arc-shaped groove 210 is formed along the axial direction. The processing ring 208
As shown in FIG. 11B, arc-shaped grooves 211 are formed on the inner peripheral surfaces of a to 208c along the axial direction thereof. An arc-shaped groove 213 is formed on the inner peripheral surface of each of the sleeves 204a to 204d along the axial direction. Further, on the inner peripheral surfaces of the guide rings 207a and 207b, arc-shaped grooves (not shown) are formed along the axial direction. The detent pin 212 is formed between the arc-shaped groove 210 on the outer peripheral surface of the roll body 206 and the guide ring 20.
7a and 207b are aligned with arc-shaped grooves (not shown) on the inner peripheral surface, arc-shaped grooves 213 on the inner peripheral surface of the sleeves 204a to 204d, and arc-shaped grooves 211 on the inner peripheral surface of the processing rings 208a to 208c. Is inserted into the elongated columnar portion formed by. After the insertion of the detent pin 212, as described above, a plurality of screws are removed from the sealed portions of the guide rings 207a and 207b.
6, the guide ring 207a,
207b can be fixed to the main body 206, and the processing rings 208a to 208c and the sleeve 204
a to 204d can be fixed at predetermined positions without rotating with respect to the roll main body 206.

The number of working rings fitted to the roll body is not limited to three, but may be one, two or four or more.

In the apparatus for manufacturing a porous film incorporating the second roll 20 having such a configuration, as shown in FIG. 12, for example, polyethylene terephthalate (PET) supplied from a roll of a long film (not shown) is used. ) Of the first film 10 and the second film 20 on the inner side of the guide rings 207a and 207b (the processing rings 208a to 208c and the sleeve 20).
4a to 204d) are passed upward from below the rolls 10 and 20 and wound up on a winding roll (not shown). Subsequently, the second roll 20 is moved to the first roll 10 by the pressure adjusting mechanism in the same manner as in the first embodiment.
At a predetermined pressure. Thereafter, the drive mechanism is operated to rotate the first roll 10 in the counterclockwise direction and the second roll 20 in the clockwise direction.

At this time, in each of the sleeves 204a to 204d of the second roll 20, the belt-like convex portion 205 extending along the length direction has the first roll sandwiching the long film 90 as shown in FIG. 10, the long film 90 is sandwiched between the convex portion 205 and the sharp corner of the synthetic diamond particles 13. For this reason, the sharp corners of the synthetic diamond particles 13 facing the band-like convex portions 205 selectively and fixedly penetrate the long film 90 to perform mechanical perforation.

On the other hand, each sleeve 2 of the second roll 20
When the region between the band-shaped convex portions 205 along the length direction in 04a to 204d is positioned so as to face the first roll 10 with the long film 90 interposed therebetween as shown in FIG. Since the one roll 10 is rotated by contacting the guide rolls 202a and 202b flush with the surfaces of the convex portions 205 at both ends of the second roll 20 at both ends thereof, the long film 90 is formed by the second roll 20. The synthetic diamond particles 13 of one roll 10 pass through a region between the convex portions 205 away from sharp corners. Therefore, the long film 90 passes between the first and second rolls 10 and 20 without being perforated by a large number of the synthetic diamond particles 13.

The first and second rolls 10, 20
During the rotation of the second roll 20, the processing rings 208a to 208 fitted with a predetermined interval in the length direction of the second roll 20 are attached.
When c is positioned so as to face the first roll 10 with the long film 90 interposed therebetween as shown in FIG. 12, the long film 90 is attached to the processing rings 208a to 208c.
And the sharp corners of the synthetic diamond particles 13. For this reason, the processing rings 208a to 208c
The sharp corners of the synthetic diamond particles 13 opposing to the hole selectively penetrate the elongate film 90 to a certain depth to perform mechanical perforation.

As a result, a long porous film 94 having a band-shaped perforated region in the width direction and the length direction of the film 90 in which a large number of through holes and non-perforated holes are perforated, that is, a lattice-shaped perforated region 96 is formed. Can be manufactured.

Further, the first roll 10 has the processing rings 208a-208 of the second roll 20 at both ends.
208c and each of the sleeves 204a-20
Since the surfaces (circular surfaces) of the convex portions 205 of 4d are in contact with the guide rings 207a and 207b, the rolls 10 and 20 can be rotated stably and smoothly. As a result, since the long film 90 can be smoothly sent out from between the first and second rolls 10 and 20, when the long film 90 is partially perforated, the long film 90 is bitten between the rolls 10 and 20, Breaking can be prevented.

It is to be noted that the pressing force of the second roll 20 against the first roll 10 by the pressure adjusting mechanism is weakened to mainly increase the distance between the first and second rolls 10 and 20 as compared with the above-described embodiment. Thereby, it is possible to form a grid-like band-shaped perforated region consisting of only the non-through holes in the long film.

As described above, according to the third embodiment, the polymer material,
For a long film made of various materials including metals, the original characteristics of the film material (for example, in the case of an organic polymer film, softness and transparency, etc.) are hardly impaired, and short films as in the prior art are used. A grid having a large number of through-holes and / or non-through-holes having a fine dimension of sub-μm to several tens of μm without interposing an organic polymer sheet having elasticity which breaks with time between the first and second rolls. It is possible to provide a porous film manufacturing apparatus capable of forming a perforated region and continuously performing the perforating operation for a long time.

Such a porous film is, for example, a film material (outer layer film) of a packaging bag for storing kimchi and miso, a film for a standing pouch-type packaging bag for storing contents compatible with a microwave oven, for example, instant curry and the like. It can be effectively used as a film material for packaging bags for storing raw materials (laminated films) and fruits and vegetables to be kept fresh.

Although the first and second rolls are arranged horizontally (arranged horizontally) in the first to third embodiments described above, the first and second rolls are arranged vertically. Is also good. In this case, it is preferable that the contact roll and the pressure roll are sequentially arranged on the second roll located on the upper side, and the backup roll is arranged below the first roll located on the lower side.

[0077]

As described above in detail, according to the apparatus for manufacturing a porous film according to the present invention, a long film composed of various materials such as a polymer material and a metal can be used for a long film. (For example, in the case of an organic polymer film, the organic polymer sheet having elasticity that can be broken in a short time as in the related art without substantially impairing the soft feeling and transparency, etc.) between the first and second rolls. Having a large number of through-holes and / or non-through-holes having sub-micrometer to several tens of micrometer fine dimensions without intervening in a strip-shaped perforated area along the width direction of the long film or a strip-shaped area along the length direction. A film material for an easily tearable packaging bag, which can be formed at a desired interval or a plurality of holes or a lattice-shaped perforated region can be formed, and the perforating operation can be continuously performed for a long time. A standing pouch-type container that stores contents that release carbon dioxide in the process of fermentation and ripening, such as kimchi, film material (outer layer film) for packaging bags containing miso, and microwave-compatible contents such as instant curry. A porous film effective as a film material (laminated film) for a packaging bag and a film material for a packaging bag for storing fruits and vegetables to be kept fresh can be produced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a porous film manufacturing apparatus according to a first embodiment.

FIG. 2 is a view showing a second roll incorporated in the manufacturing apparatus of FIG. 1;

FIG. 3 is a perspective view showing a driving mechanism of the manufacturing apparatus of FIG.

FIG. 4 is a schematic perspective view for explaining the operation of the manufacturing apparatus of FIG. 1;

FIG. 5 is a cross-sectional view showing a state where a through-hole and a non-through-hole are partially perforated in the long film between the first and second rolls of the manufacturing apparatus in FIG. 1;

FIG. 6 is a sectional view showing a non-perforated state between the first and second rolls of the manufacturing apparatus of FIG. 1;

FIG. 7 is a sectional view showing a porous film manufactured by the manufacturing apparatus according to the first embodiment.

FIG. 8 is a front view showing an easily tearable packaging bag.

FIG. 9 is a view showing another second roll incorporated in the manufacturing apparatus of FIG. 1;

FIG. 10 is a schematic perspective view for explaining the operation of the manufacturing apparatus in which the second roll of FIG. 9 is incorporated.

FIG. 11 is a view showing still another second roll incorporated in the manufacturing apparatus of FIG. 1;

FIG. 12 is a schematic perspective view for explaining the operation of the manufacturing apparatus in which the second roll of FIG. 11 is incorporated.

[Explanation of symbols]

 Reference Signs List 10: first roll, 13: synthetic diamond particles, 20: second roll, 202a, 202b: guide roll, 204, 204a to 204d: sleeve, 205: convex portion, 206: roll body, 207a, 207b: guide ring , 208a to 208c: processing ring, 209a to 209d: adjustment ring, 212: detent pin, 30: drive mechanism, 31, 42: motor, 39, 51: angle detection encoder, 54: controller, 60: compression adjustment mechanism, Reference numeral 65: roll, 66a, 66b: pressure roll, 70a, 70b: screw, 78: backup roll, 90: long film, 91: through hole, 92: non-through hole, 93, 95: band-shaped perforated area, 94 ...: porous film, 96: lattice-shaped perforated area.

Claims (7)

[Claims] 1. A supply means for supplying a long film; a rotatable first roll having a plurality of particles having Mohs hardness of 5 or more having sharp corners adhered to a surface; A second roll rotatable in a direction opposite to the first roll, the second roll having a surface that partially contacts the particles with the long film interposed therebetween;
Rolls are arranged so that their outer peripheral surfaces face each other and the long film passes between them, one of the rolls is fixed, and the other is movably arranged with respect to the one roll. A position where the distance between the particle tip of the first roll and the contact surface of the second roll is smaller than the thickness of the long film with the movable roll facing the fixed roll. Pressure adjusting means for pressing the first and second rolls; and driving means for rotating the first and second rolls. The second rolls include guide rolls arranged near both ends, and these guide rolls. An apparatus for manufacturing a porous film, comprising: a belt-shaped convex portion having an arc-shaped surface flush with an outer peripheral surface of the guide roll formed on an outer peripheral surface between the guide rolls. 2. A supply means for supplying a long film; a rotatable first roll having a plurality of particles having a Mohs hardness of 5 or more having sharp corners adhered to a surface thereof; A second roll rotatable in a direction opposite to the first roll, the second roll having a surface that partially contacts the particles with the long film interposed therebetween;
Rolls are arranged so that their outer peripheral surfaces face each other and the long film passes between them, one of the rolls is fixed, and the other is movably arranged with respect to the one roll. A position where the distance between the particle tip of the first roll and the contact surface of the second roll is smaller than the thickness of the long film with the movable roll facing the fixed roll. And a driving means for rotating the first and second rolls. The second roll is provided with a cylindrical roll body and near both ends of the roll body. Guide rings fitted respectively,
At least one working ring fitted to the roll body portion located between these guide rings at a desired interval with respect to the guide ring, and having an outer periphery having the same diameter as the outer periphery of the guide ring; An apparatus for producing a porous film, comprising: an adjusting ring fitted to a roll body portion located between a ring and the guide ring, and having an outer periphery having a smaller diameter than an outer periphery of the guide ring. 3. A supply means for supplying a long film; a rotatable first roll having a number of particles having a Mohs hardness of 5 or more having sharp corners adhered to a surface thereof; A second roll rotatable in a direction opposite to the first roll, the second roll having a surface that partially contacts the particles with the long film interposed therebetween;
Rolls are arranged so that their outer peripheral surfaces face each other and the long film passes between them, one of the rolls is fixed, and the other is movably arranged with respect to the one roll. A position where the distance between the particle tip of the first roll and the contact surface of the second roll is smaller than the thickness of the long film with the movable roll facing the fixed roll. And a driving means for rotating the first and second rolls. The second roll is provided with a cylindrical roll body and near both ends of the roll body. Guide rings fitted respectively,
At least one first working ring fitted on the roll body portion located between these guide rings at a desired interval with respect to the guide ring, and having an outer periphery having the same diameter as the outer periphery of the guide ring; A belt-shaped convex portion fitted to the roll body portion located between the first processing ring and the guide ring and having an arc-shaped surface flush with the outer peripheral surface of the guide ring has a lengthwise direction. And a second processing ring formed along at least one of the second processing rings. 4. The apparatus according to claim 1, wherein the particles having a Mohs hardness of 5 or more are natural or synthetic diamond particles. 5. The punching unit according to claim 1, wherein the first and second rolls are arranged horizontally next to each other, and the first roll is fixed, and the second roll is fixed to the first roll. 2. The apparatus according to claim 1, wherein the apparatus is movable.
4. The apparatus for producing a porous film according to any one of claims 3 to 3. 6. The pressure adjusting means comprises a backup roll horizontally arranged on the opposite side of the first roll from the second roll, and a backup roll horizontally arranged on the opposite side of the second roll from the first roll. The porous body according to claim 5, further comprising: a backing roll arranged side by side; and at least one horizontally arranged pressure roll for pressing the backing roll toward the second roll. Film production equipment. 7. The driving means includes: a first rotation driving member for rotating the first roll; a first angle detection member for detecting a rotation angle of the first roll;
A second rotation driving member for rotating the roll, a second angle detection member for detecting a rotation angle of the second roll, a rotation angle from the first angle detection member, and a rotation angle of the second angle detection member. Control means for controlling the angular velocity of the second roll by the second rotary drive member to be equal to the angular velocity of the first roll based on the detection signals of the rotational angles. The apparatus for producing a porous film according to any one of claims 1 to 3, wherein the apparatus is provided.