JP2753469B2 - Easy tearing device and method of manufacturing unsealed bag with easy tearing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for imparting easy tearing to an unsealed bag and a method for producing the easily sealed unsealed bag.

[0002]

2. Description of the Related Art In recent years, a wide variety of liquid products such as liquid soups, liquid detergents, instant curries and the like have been put on the market in sealed bags using an organic resin film as a base film. The gusset-type sealed bag is self-supporting and is therefore suitable for storing, for example, a liquid soup or a liquid detergent. Such a sealed bag is made of a laminated film of a heat-fusible film such as a polyethylene film and a rigid organic resin film such as a nylon film. Prepare a cylindrical packaging film in which the film is located on the inner surface side, heat seal the heat-fusible resin films of this packaging film with each other, and cut to a desired size the structure shown in FIG. Have. That is, the sealed bag 1 has a heat seal portion 2 formed on the peripheral edge, a gusset portion 3 formed on the bottom portion, and an elongated pouring portion 4 formed on the upper corner portion and sealed at the tip. A liquid injection part is opened at a part of the side on the side of the pouring part 4, and is heat-sealed after the liquid 5 is injected.

In the above-mentioned sealed bag, a heat-fusible resin such as a polyethylene film having good heat sealing properties is inevitably used as a base film in order to form a bag. However, the heat-fusible resin film has a property that it is hard to tear in both the vertical and horizontal directions, and particularly has a property that it is hard to tear in an oblique direction. For this reason, it cannot be opened by tearing diagonally with a finger so as to traverse the sealed elongated pouring portion 4 of the sealed bag 1 shown in FIG. In particular, the gusset-type sealed bag is almost impossible to tear with a finger because the nylon film, which is a material of the packaging film, is thick. Therefore, in order to open the gusset-type sealed bag 1, FIG.
As shown in (1), it is necessary to cut the gusset-type sealed bag 1 so as to traverse the elongated pouring portion 4 using scissors 6, and there is a problem that the opening operation is troublesome.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a corner portion of an unsealed bag in which a sealed liquid discharging section is located, with an easy tearing property capable of easily tearing in a diagonal direction. It is an object of the present invention to provide an easily tearable device.
An object of the present invention is to provide a method of manufacturing an unsealed bag provided with an easy tearing property capable of easily tearing a corner portion where a sealed liquid discharging portion is located.

[0005]

According to the present invention, there is provided a device for imparting easy tearability, comprising a heat-fusible resin film located on the inner surface side and a rigidity-adhering resin film.
From a laminated film with an organic resin film
The processing film is manufactured by heat-sealing a flat, cylindrical packaging film having both ends opened, and a plurality of unsealed bags having at least a part of one side opened. An apparatus for imparting fragility to a corner portion of the unsealed bag where the sealed liquid discharging portion is located, the device having a first perforated portion in a surface region, wherein the first perforated portion is provided in the surface region. A lower block formed by adhering a large number of particles having a Mohs hardness of 5 or more having sharp corners to the first block;
A second perforation in a surface area facing the perforation, the second perforation having a sharp Mohs hardness in the surface area;
An upper block formed by adhering a large number of particles as described above, and the distance between the particle tips of the first and second perforated portions of the upper block facing the lower block is set on the lower block. It is moved to smaller position than the thickness of the supplied processed film, thereby pre
In the first perforated portion on the lower block side,
Sharp corners of the particles form the unsealed bag of the processed film.
Penetrate the organic resin film on the outside to form
Press into the middle of the heat-fusible resin film
Sometimes the large number of holes in the second perforated portion of the upper block
Sharp corners of the particles form the unsealed bag of the processed film.
Penetrate the organic resin film on the outside to form
Press-fitting to near the middle of the heat-fusible resin film
A drive means for forming a large number of non-through holes on both sides of the corner portion of the unsealed bag is provided.

[0006] Production method of unsealed bag tearable is imparted according to the present invention, heat fusible resin film which is located on the inner surface side
Laminated film with a rigid organic resin film
Rannahli, by thermally sealing the tubular packaging film flat with both ends open, at least a portion of one side is opened, and a plurality of unsealed bag the liquid dispensing unit that is sealed is positioned at the corner portion Producing a processed film having: a first perforated portion in a surface region, wherein the first perforated portion is formed by adhering a large number of particles having a Mohs hardness of 5 or more having a sharp corner to the surface region. Supplying the processed film to the lower block such that the corner portion of the unsealed bag formed on the processed film is positioned on the first perforated portion; An upper block formed by adhering a large number of particles having a Mohs hardness of 5 or more having sharp corners on the surface region, the second block having a second perforated portion in a surface region facing the one perforated portion. To The first of them block toward the lower block,
The second perforated portion is moved to a position where the distance between the particle tips is smaller than the thickness of the processed film supplied on the lower block, whereby the first block on the lower block side is moved .
At the perforation, the sharp corners of the large number of particles
The organic resin film on the outer side constituting the unsealed bag of the film.
The heat-fusible resin film penetrating through the film
Of the upper block at the same time
At the perforation, the sharp corners of the large number of particles
The organic resin film on the outer side constituting the unsealed bag of the film.
The heat-fusible resin film penetrating through the film
Forming a large number of unpenetrated holes on both sides of the corner portion of the unsealed bag by press-fitting to the vicinity of the middle of the unsealed bag ; and separating the unsealed bag from the processed film. It is.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an apparatus for imparting tear resistance according to the present invention will be described in detail. A processed film in which a plurality of unsealed bags each having at least a part of one side opened and having a liquid pouring portion sealed in a corner portion is prepared. This processed film has a heat-fusible resin surface on the inner surface side, and is produced by heat-sealing a flat, tubular packaging film having both ends opened.

The device for imparting easy tearability according to the present invention is an apparatus for imparting easy tearability to a corner portion of the processed film in which the sealed liquid discharging portion of the unsealed bag is located. A lower block formed by adhering a large number of particles having a Mohs hardness of 5 or more having sharp corners to the surface region; and a first perforated portion disposed above the lower block. A second perforated portion in a surface region facing the first perforated portion, wherein the second perforated portion is formed by adhering a large number of particles having a Mohs hardness of 5 or more having a sharp corner to the surface region. And a position where the distance between the particle ends of the first and second perforated portions of the upper block and the upper block facing the lower block is smaller than the thickness of the processed film supplied on the lower block. Move to Allowed, thereby and a driving means for forming the processed film formed the plurality of non-through hole by press-fitting the sharp corners of the large number of particles on both sides of the corner portions of the unsealed pouch.

The cylindrical packaging film is made of, for example, a heat-fusible resin film alone or a laminated film of a heat-fusible resin film and a rigid organic resin film. Examples of the heat-fusible resin include polyethylene such as low-density polyethylene and linear low-density polyethylene, ethyl vinyl acetate copolymer (EVA), and unstretched polypropylene. Examples of the rigid organic resin include polyethylene terephthalate (PET), nylon, and oriented polypropylene film.

The first and second perforated portions formed in each block are formed by bonding a large number of particles having Mohs hardness of 5 or more having sharp corners by, for example, an electrodeposition method or an organic or inorganic binder. It is formed by adhering to a predetermined surface area by a method. Such first and second perforated portions are:
For example, it has a shape of an isosceles triangle. It is preferable that the large number of particles adhere to a predetermined surface area of each block by 70% or more.

A plurality of first and second perforated portions may be formed in each of the blocks. Examples of the particles having a Mohs hardness of 5 or more include cemented carbide particles such as tungsten carbide, silicon carbide particles, boron carbide particles, sapphire particles, cubic boron nitride (CBN) particles, and natural or synthetic diamond particles. Can be mentioned.
In particular, natural or synthetic diamond particles having high hardness and strength are desirable. It is desirable to use natural or synthetic diamond particles having a particle size of 10 to 100 μm and a variation of the particle size of 5% or less. In particular, when diamond particles are used as a large number of particles having a Mohs' hardness of 5 or more, it is preferable to attach the diamond particles to a predetermined surface region of each block made of a metal such as steel by electrodeposition. In the electrodeposition, the surface of each block to be electrodeposited in advance is plated with Ni by plating technique.
It is desirable to form a layer and a Cr layer.

Next, a method for producing an unsealed bag provided with easy tearing will be described. First, a liquid that has a heat-fusible resin surface on the inner surface and is heat-sealed to a flat, cylindrical packaging film having both ends opened, so that at least one side is opened and sealed in a corner portion Prepare a processed film having a plurality of unsealed bags in which the spout is located.

Next, a first perforated portion is provided in the surface region, and the first perforated portion is formed in the lower block formed by adhering a large number of particles having a Mohs hardness of 5 or more having sharp corners to the surface region. And supplying the processed film such that the corner portion of the unsealed bag formed on the processed film is positioned on the first perforated portion. Then, it is arrange | positioned above the said lower block and has a 2nd perforation part in the surface area | region facing the said 1st perforation part, and this 2nd perforation part has a sharp corner in the said surface area. The upper block formed by adhering a large number of particles to the lower block, the distance between the particle tips of the first and second perforations of the blocks toward the lower block, and the processed film supplied on the lower block To a position where it is smaller than the thickness of
As a result, sharp corners of the large number of particles are pressed into both surfaces of the corner portion of the unsealed bag formed in the processed film to form a large number of non-through holes.

Next, the processed film is cut to separate the unsealed bag having a large number of non-through holes formed on both sides of the corner where the sealed liquid discharging portion is located, thereby providing easy tearing. To produce unsealed bags.

The easy-tearability imparting device according to the present invention described above is manufactured by heat-sealing a flat, tubular packaging film having a heat-fusible resin surface on the inner surface side and both ends opened. For a processed film in which a plurality of unsealed bags with at least a part of one side opened are formed, the corner portion of the processed film where the sealed liquid discharging portion of the unsealed bag is located is easily tearable. A lower block having a first perforated portion formed by adhering a number of particles having a Mohs hardness of 5 or more having a sharp corner in a surface region, and a lower block disposed above the lower block, An upper block having a second perforated portion formed by adhering a large number of particles having a Mohs hardness of 5 or more having a sharp corner in a surface region opposed to the perforated portion, and driving the upper block to the lower block by driving means. To The distance between the particle tips of the perforated portions is moved to a position where the distance between the particle ends of the perforated portions is smaller than the thickness of the processed film having the plurality of unsealed bags supplied on the lower block. By press-fitting the sharp corners of the large number of particles on both sides, a large number of fine non-through holes can be formed on both sides of the corner portion of the unsealed bag.

The processed film treated by the tear-imparting device of the present invention is cut to separate an unsealed bag, and a desired liquid is accommodated through an opening (liquid injection portion) of the unsealed bag. A sealed bag is obtained by heat sealing the part.
In this sealed bag, a large number of fine non-through holes are formed on both sides of the corner where the sealed liquid outlet is located. That is, in the sealed bag, a non-through-hole forming region including a large number of non-through-holes is formed in the corner where the liquid discharge section is located.
In such a sealed bag, when the user grasps the bag with a finger of one hand and picks and pulls the non-through hole forming region with the finger of the other hand, the non-through hole forming region and the non-through hole are formed. On both sides of the boundary with the non-existent area, the large number of non-through holes sequentially act as tearing starting points. For this reason, the corner portion where the liquid discharge portion is located is easily torn and separated at the boundary. Therefore, when the liquid in the sealed bag is opened to be poured through the liquid discharging portion, without using scissors as in the related art, the corner portion can be torn to open the liquid discharging portion, The opening operation can be significantly simplified.

Further, according to the method of the present invention, it is possible to manufacture an unsealed bag in which a non-through-hole forming region including a large number of non-through holes is formed in a corner portion where a sealed liquid discharging portion is located. By storing a desired liquid through the opening (liquid injection part) of such an unsealed bag and heat sealing the injection part, the corner part can be easily torn without using scissors as in the related art. As a result, a sealed bag capable of opening the liquid outlet can be obtained.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing an easily tearable device according to an embodiment of the present invention, FIG. 2 is a plan view showing a table constituting the device shown in FIG. 1, and FIG. It is. For example, on a table 11 made of a steel material, there is formed a depression 12 which is depressed stepwise toward the center. The screw holes 13 a and 13 b are formed from the bottom surface of the table 11 to the left and right step surfaces of the recess 12. A post 14a that has been subjected to thread cutting;
14b is screwed into the screw holes 13a and 13b so that their tips protrude. A lower base 15 having a T-shaped cross section, in which a rectangular plate member 17 and a quadrangular prism 16 each made of a steel material are combined, is disposed in the recess 12. In the vicinity of both ends of the plate member 17 constituting the lower gantry 15, cylindrical holes 18a and 18b are formed from the lower surfaces thereof so as to engage with the projecting upper ends of the columns 14a and 14b. Spring 19a, 19b
Is interposed between the bottom surface of the recess 12 and the lower surface of the plate 17 to urge the lower gantry 15 upward. The quadrangular prism 16 has a cylindrical through hole 20 that is threaded in the vertical direction. A cylindrical lower block 21 whose outer peripheral surface is threaded is screwed into a cylindrical through-hole 20 of the quadrangular prism 16. The first perforated portion 22 having a right-angled isosceles triangle shape is formed on the surface of the lower block 21 as shown in FIG. The first perforated portion 22
3 is formed by adhering a number of particles having a Mohs hardness of 5 or more having sharp corners, for example, synthetic diamond particles 23 to the surface of the lower block 21 via an electrodeposition layer 24 as shown in FIG.

For example, an opening 25 is formed in the center made of steel.
The movable plate 26 having an elongated shape is disposed above the table 11. Rectangular plate 2 each made of steel
An upper pedestal 27 having an inverted T-shaped cross section combining the 9 and the quadrangular prism 28 is disposed above the lower pedestal 15. The movable plate 26 is moved up and down by a first hydraulic mechanism (not shown) constituting driving means. The upper mount 27
In the vicinity of both ends of the plate member 29 constituting the
a and 30b are formed respectively. The pillars 31a and 31b, which are threaded near the upper and lower ends, pass through the movable plate 26 on the left and right sides of the opening 25 and are screwed into the screw holes 30a and 30b of the plate 29. I have. The coil springs 32a and 32b are provided so as to surround the upper ends of the columns 31a and 31b protruding from the upper surface of the movable plate 26. Double nut 3
3a and 33b are screwed into the threaded portions at the upper ends of the columns 31a and 31b. Such columns 31a, 31b, coil springs 32a, 32b and double nut 33
The upper pedestal 27 is suspended from the movable plate 26 by a and 33b. The quadrangular prism body 28 that forms the upper pedestal 27 has a cylindrical through hole 34 that is vertically threaded. A cylindrical upper block 35 having an outer peripheral surface threaded is screwed into a cylindrical through hole 34 of the quadrangular prism 28. For example, a second perforated portion 36 having a right-angled isosceles triangle shape is formed on the lower surface of the upper block 35 so as to face the first perforated portion 22 on the upper surface of the lower block 21. The right isosceles triangular second
The perforated portion 36 has the same dimensions as the first perforated portion 22 on the upper surface of the lower block 21. The second perforated portion 36
3 is formed by adhering a number of particles having a Mohs hardness of 5 or more having sharp corners, for example, synthetic diamond particles 37 to the surface of the upper block 35 via an electrodeposition layer 38 as shown in FIG.

The lower end of the piston 39 is inserted into the upper block 35. The pressure detector 40 is attached to the lower end of the piston 39. The piston 39 is moved up and down by a second hydraulic mechanism (not shown) constituting a driving unit. By lowering the piston 39, the upper gantry 27 is lowered toward the lower gantry 15. At this time, the upper frame 27 has a plurality of unsealed bags in which the distance between the second perforated portion 36 of the upper block 35 and the first perforated portion 22 formed in the lower block 21 of the lower frame 15 is described later. It is moved to be less than the thickness of the film.

Next, a method of manufacturing an unsealed bag provided with an easy-tear property using the easy-teariness imparting device according to the present invention will be described with reference to FIGS. 1 to 3 and FIGS. I do. First, a plurality of folded portions serving as gusset portions to be described later are formed in a long laminated film composed of a nylon film and a polyethylene film over the length direction thereof, such that the polyethylene film is located inside. After being folded in two along the length direction, both ends along the length direction are heat-sealed to form a cylindrical long packaging film having open front and rear ends. By subjecting the long packaging film to heat sealing, a processed film 42 in which a plurality of gusset-type unsealed bags 41 symmetrical with each other in a line in the longitudinal direction are produced as shown in FIG.
Each of the unsealed bags 41 is made of a laminated film of a nylon film and a polyethylene film, and has a heat seal portion 43 formed on the periphery and a gusset portion 4 formed on the bottom.
4, an elongated pouring portion 45 formed at the upper corner portion, the tip of which is sealed, and a liquid pouring portion 46 opened at a part of the side on the pouring portion 45 side.

Next, the processed film 42 is supplied onto the table 11 as shown in FIG. At this time, the processed film 42 has an elongated liquid discharging portion 45 of two symmetrically-unsealed gusset-type unsealed bags 41 formed on the processed film 42 in an area of an upper surface of the lower block 21 of the table 11. It is arranged so as to be located on the first perforated portion 22 having a right isosceles triangular shape. In this state, the first hydraulic mechanism (not shown) of the driving means is operated to move the movable plate 26 downward, and the second hydraulic unit is formed on the upper block 35 of the upper base 27 suspended by the movable plate 26. The perforated portion 36 is brought close to the surface of the processed film 42. Thereafter, the second hydraulic mechanism (not shown) of the driving means is operated to lower the piston 39 and move the upper pedestal 27 toward the lower pedestal 15 of the table 11. At this time, the upper pedestal 27 is connected to the blocks 21 and 35 of the lower pedestal 15 and the upper pedestal 27.
Is moved to a position where the distance between the tips of the large number of synthetic diamond particles 23 and 37 constituting the first and second perforated portions 22 and 36 is smaller than the thickness of the processed film 42 supplied on the table 11. . Thereby, as shown in FIG. 5, in the first perforated portion 22 on the lower block 21 side, the sharp corners of the large number of diamond particles 23 form the outer nylon film 47 constituting the unsealed bag 41 of the processed film 42. It penetrates and is press-fitted to the vicinity of the middle of the polyethylene film 48 inside. At the same time, in the second perforated portion 36 on the upper block 35 side, the sharp corners of the large number of diamond particles 37 penetrate the outer nylon film 47 constituting the unsealed bag 41 and are intermediate between the polyethylene film 48 on the inner side. Pressed into the vicinity. As a result, as shown in FIG. 6, in the corner where the sealed elongated liquid pouring section 45 of the unsealed bag 41 made of a laminated film of the polyethylene film 48 and the nylon film 47 is located, a large number of A non-through hole 49 is formed.

By cutting the processed film processed by such an easy tearing device along a separation line shown by a two-dot chain line in FIG. 4, an elongated liquid discharging portion 45 as shown in FIG. A gusset-type unsealed bag 41 having a triangular-shaped non-through-hole forming region 50 composed of a large number of non-through holes at the corner where is located is manufactured.

A liquid detergent, for example, is injected into the obtained gusset-type unsealed bag 41 through the liquid injection portion 46 and heat-sealed to accommodate the liquid detergent 51 as shown in FIG. A gusset-type sealed bag 52 having a triangular non-through hole forming region 50 at the corner where the 45 is located is produced.

In the sealed bag 52 having the above-mentioned structure, as shown in FIG. 8, the bag 52 is grasped by the finger of one hand 53 and the non-through hole forming region 50 is pulled by the finger of the other hand 54 and pulled. On both sides of the boundary between the non-through hole forming region 50 and the region where no non-through hole is formed, the large number of non-through holes 49 are formed.
Act sequentially as tearing origins. For this reason, as shown in FIG. 9, the corner portion (triangular non-through-hole forming region 50) of the sealing bag 52 where the liquid discharging portion 45 is located is easily torn and separated at the boundary. Therefore, the liquid discharging section 4 in which the liquid detergent 51 in the sealing bag 52 is sealed.
5, when opening to pour through, without using scissors as in the prior art, the non-through hole forming region 50 of the corner portion can be easily torn by hand to open the liquid pouring portion 45, The opening operation can be significantly simplified.

On the other hand, in the above-described easy tearing device,
The second hydraulic mechanism (not shown) of the driving means is operated to lower the piston 39 and move the upper pedestal 27 to the table 1
When pressed toward the lower gantry 15, the lower gantry 15 and the upper gantry 27 are moved between the lower gantry 15 and the upper gantry 27 by springs 19 a and 19 b interposed between the bottom surface of the recess 12 and the lower surface of the plate 17 of the lower gantry 15. Excessive pressing force acting on the member can be reduced. As a result, even if the first and second perforated portions 22 and 36 formed in the blocks 21 and 35 of the lower frame 15 and the upper frame 27 are pressed together with the unsealed bag 41 interposed therebetween, Electrodeposition layers 24, 3 of perforated parts 22, 36
8 can be prevented from being cracked or damaged. Therefore, it is possible to prevent the large number of synthetic diamond particles 23 and 37 attached by the electrodeposition layers 24 and 38 from falling off due to the cracks or the like.

The lower block 21 having the first perforated portion 22 is screwed into a cylindrical through hole 20 formed in the quadrangular prism 16 of the lower base 15, and the upper block 35 having the second perforated portion 36. Is screwed into a cylindrical through hole 34 formed in the square pillar 28 of the upper pedestal 27. That is, each of the blocks 21 and 35 is
8 to be detachably attached. As a result, it is possible to easily change the shapes and dimensions of the perforated portions 22 and 36 only by replacing the respective blocks.

In the above embodiment, the shape of the perforated portion is a right-angled isosceles triangle, but is not limited to this. For example,
The perforated portion may be formed in a band shape or the like. Before supplying the processed film 42 to the table 11 as shown in FIG. 4, the polyethylene film disposed inside the processed film 42 is heat-sealed in the non-through hole forming area of each of the unsealed bags. Is also good. That is, in the gusset-type sealed bag separated from the processed film, the polyethylene film portion of the liquid pouring portion located at the boundary between the non-through hole region and the region where the non-through hole is not formed is heat-sealed. . When the user holds such a gusset-type sealed bag with one hand and pulls the non-through hole region with the other hand, the polyethylene film is easily torn without stretching. This is because the polyethylene film, that is, the inner layer of the gusset-type sealed bag, is sealed at the boundary between the non-through hole area and the area where no non-through hole is formed. Therefore, the non-through hole region can be easily torn as compared with the case of the gusset-type sealed bag shown in FIG.
The liquid outlet can be opened.

Prior to separating the unsealed bag by cutting the processed film processed by the tear-imparting device of the present invention, the boundary between the non-through hole forming region and the region where no non-through hole is formed is determined. By inserting V-cuts in the sides of the intersecting corners, a gusset-type unsealed bag 41 having a V-cut 55 as shown in FIG. 10 may be manufactured. The V-cut portion 55 may be put in an unsealed bag after being separated from the cutting. In a sealed bag obtained by storing a desired liquid through the liquid injection portion 46 of such an unsealed bag 41 and heat sealing the injection portion, the bag is inserted with one finger as described above. The V-cut portion acts as a tear starting point first when the finger is gripped and pulled with the finger of the other hand in the non-through hole forming region. The through-hole forming region) can be very easily torn apart along the boundary.

Further, when cutting the processed film processed by the easy tearing device of the present invention to separate the unsealed bag,
As shown in FIG. 11, the gusset-type unsealed bag 41 may be manufactured by forming a protruding piece 56 connected to the non-through hole forming region 50. A desired liquid is accommodated through the liquid injection section 46 of the unsealed bag 41, and the liquid injection sealed in the same manner as described above in the sealed bag obtained by heat-sealing the injection section 46. When tearing and separating the corner portion where the portion is located, it is possible to grasp the bag with the finger of one hand and to pinch the large-area non-through hole forming region including the protruding piece with the finger of the other hand. As a result, the non-through hole forming region can be pulled with a stronger force, so that the tearing and separating operations can be performed more easily. In the above embodiment, the gusset type unsealed bag is provided with easy tearability, but the present invention can be similarly applied to a normal unsealed bag without a gusset portion.

[0031]

As described above, according to the apparatus for imparting easy tearability according to the present invention, it is possible to easily tear obliquely at the corner of the unsealed bag where the sealed liquid outlet is located. It is possible to impart easy tearability. Therefore, by containing and sealing the desired liquid in the unsealed bag,
It is possible to obtain a sealed bag capable of easily tearing and opening the corner portion where the liquid discharging portion is located without using scissors as in the related art.

Further, according to the present invention, after the desired liquid is stored and sealed, it is possible to easily tear off the corner where the liquid discharge section is located by hand without using scissors as in the related art, and open it. It is possible to provide a method for producing an unsealed bag provided with possible tearability.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an easily tearable device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a table constituting the apparatus shown in FIG. 1;

FIG. 3 is an enlarged sectional view of a main part of the apparatus of FIG. 1;

FIG. 4 is a plan view showing a processed film having a plurality of unsealed bags conveyed on the table of FIG. 1;

FIG. 5 is a cross-sectional view showing a step of imparting easy tearability to a corner portion of an unsealed bag formed on a processed film.

FIG. 6 is a cross-sectional view showing a corner portion of an unsealed bag after imparting easy tearability.

FIG. 7 is a plan view showing an easily-sealed unsealed bag obtained according to an embodiment of the present invention.

FIG. 8 is a perspective view showing a state in which the sealed bag is opened after the liquid is stored in the unsealed bag obtained in the example.

FIG. 9 is a perspective view showing a state where the sealing bag of FIG. 8 is opened.

FIG. 10 is a plan view showing another form of an unsealed bag to which an easy tearing device according to the present invention has been provided with easy tearing.

FIG. 11 is a plan view showing still another form of the unsealed bag to which the easy-teariness imparting device of the present invention has imparted easy-tearability.

FIG. 12 is a perspective view showing a conventional sealed bag after liquid storage.

[Explanation of symbols]

11: Table, 15: Lower frame, 19a, 19b: Spring, 21: Lower block, 22, 36: Perforated portion,
23, 37: synthetic diamond particles, 24, 38: electrodeposition layer, 26: movable plate, 27: upper mount, 32a, 32b ...
Coil spring, 35 ... upper block, 39 ... piston, 41 ... gusset type unsealed bag, 42 ... processed film,
44 ... gusset part, 45 ... pouring part, 47 ... nylon film, 48 ... polyethylene film, 49 ... non-through hole,
50: non-through hole area; 51: liquid detergent; 52: gusset-type sealed bag.

Claims (6)

(57) [Claims] 1. A heat-fusible resin film located on the inner surface side
And laminated organic resin film
The processing film is produced by heat-sealing a flat and cylindrical packaging film having both ends opened, and a plurality of unsealed bags having at least a part of one side opened. An apparatus for imparting tearability to a corner portion of the unsealed bag in which a sealed liquid discharging portion is located, the device having a first perforated portion in a surface region, wherein the first perforated portion is provided in the surface region. A lower block formed by adhering a large number of particles having a Mohs hardness of 5 or more having sharp corners to a second perforated portion disposed above the lower block and facing a surface of the first perforated portion; An upper block formed by adhering a large number of particles having a Mohs hardness of 5 or more having sharp corners to the surface region, and the upper block facing the lower block. B First click, move the distance between particles leading end of the second piercing portion until the smaller position than the thickness of the processed film supplied onto the lower block, whereby said lower block
Sharp corners of the large number of particles at the first perforation on the
Part of the outer side constituting the unsealed bag of the processed film
Penetrating the organic resin film and heat-sealing the inside thereof
Press into the middle of the conductive resin film and at the same time
Sharp corners of the large number of particles at the second perforation of the block
Part of the outer side constituting the unsealed bag of the processed film
Penetrating the organic resin film and heat-sealing the inside thereof
And a drive means for press-fitting to the vicinity of the middle of the conductive resin film to form a large number of non-through holes on both sides of the corner portion of the unsealed bag . 2. A plurality of unsealed bags formed on the processed film have a liquid discharging portion sealed at an upper portion and a liquid injecting portion opened adjacent to the liquid discharging portion, and have a bottom portion. The easy-tearability imparting device according to claim 1, wherein the device is a gusset type having a gusset portion. 3. A large number of particles having a Mohs hardness of 5 or more having sharp corners are synthetic diamond particles, and the upper and lower blocks are made of metal, and the synthetic diamond is applied to the upper and lower blocks, respectively. The easy-tearability imparting device according to claim 1, wherein the device is worn. 4. The processed film forms a pair in the longitudinal direction.
A plurality of unsealed bags, and said pair of unsealed bags.
Are adjacent to each other at the corner where the sealed liquid
Are arranged symmetrically about the longitudinal direction so that they touch each other.
And the first and second perforations are formed in the pair
The easy-tearability imparting device according to claim 1, wherein each of the easy-tearability imparting devices has an isosceles triangular shape so as to abut both corner portions of the sealed bag . 5. A heat-fusible resin film located on the inner surface side
And laminated organic resin film
Will, by thermally sealing the tubular packaging film flat with both ends open, a plurality of unsealed pouch at least partially opened, and the liquid dispensing unit which is sealed to the corner portion of one side is located Producing a processed film having: a first perforated portion in a surface region, the first perforated portion being formed by attaching a large number of particles having a Mohs hardness of 5 or more having a sharp corner to the surface region. Supplying the processed film to the lower block such that the corner portion of the unsealed bag formed on the processed film is positioned on the first perforated portion; disposed above the lower block; An upper block formed by adhering a large number of particles having a Mohs hardness of 5 or more having sharp corners to the surface region has a second perforated portion in a surface region facing the perforated portion. , The first of them block toward the serial lower block,
The second perforated portion is moved to a position where the distance between the particle tips is smaller than the thickness of the processed film supplied on the lower block, whereby the first block on the lower block side is moved .
At the perforation, the sharp corners of the large number of particles
The organic resin film on the outer side constituting the unsealed bag of the film.
The heat-fusible resin film penetrating through the film
Of the upper block at the same time
At the perforation, the sharp corners of the large number of particles
The organic resin film on the outer side constituting the unsealed bag of the film.
The heat-fusible resin film penetrating through the film
Easy, characterized by comprising a; separating the unsealed bag from the processed film; press-fitted to the vicinity of the intermediate step of forming a plurality of non-through holes on both sides of the corner portions of the unsealed pouch A method for producing an unsealed bag provided with tearability. 6. A plurality of unprocessed sheets formed on the processed film.
The sealed bag is a liquid outlet that is sealed at the top and this liquid
It has a liquid injection part opened adjacent to the pouring part and a bottom part
It is a gusset type having a gusset part.
6. Production of an easily sealed unsealed bag according to claim 5.
Method.