JP2002002723A - Cartridge type bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cartridge type bag, in which viscous liquid such as ink is stored in a sealed state, and which can be attached, as a whole, to a printing machine or the like, by a method wherein the bag has a simple, compact and airtight construction and residues such as ink after usage can be eliminated, while improved usability, economical efficiency, and disposability can be provided. SOLUTION: The cartridge type bag 100 is formed from a bag made of a laminated film, to the upper part of which an openable pour port 20 made of plastics is joined, and a cover film 15 which is attached to the bag so as to cover the outer periphery of the side of the upper part of the bag. The cover film 15 is so adhered to the bag, through adhering parts 16, as to form a plurality of vertical, cylindrical spaces 17 over the outer periphery of the side of the upper part of the bag. Preferably, the cover film 15 is provided so as to extend from the upper part of the bag to the midpoint of the bag, while a bar like support may be held beforehand in the space 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge-type bag, for example, in order to supply ink having fluidity such as a liquid to an office printing machine, an information output printer, or the like, in a state where the ink is filled and printed. The present invention relates to a cartridge-type bag suitable for use by being attached to a printer, an information output printer, or the like. This cartridge-type bag is also suitable as a bag for suctioning and extracting a fluid substance other than ink.

[0002]

2. Description of the Related Art Conventionally, printing machines used in offices and the like,
In addition, information supply printers and the like mainly employ a cartridge-type ink container which is attached to a printing apparatus and used together with the container in terms of simplicity of handling when supplying ink. In such a cartridge type container, particularly when the ink to be filled is a liquid or viscous ink, the ink in the container does not come into contact with air during use,
In addition, it is preferable that the amount of ink finally remaining in the container can be reduced.For example, in accordance with the reduction in the amount of ink due to suction and discharge, the container is also reduced in volume by folding, shrinking, narrowing, and the like. The configuration is such that air is prevented from flowing into the ink, and the ink is easily sucked and discharged, so that the amount of remaining ink can be reduced.

[0003] As such a cartridge type container, for example, a flexible deep drawing container made of a laminated film or the like is provided in a small outer box such as a decorative cardboard, an opening of a plastic tray-like container provided with a spout. There is a cartridge type container equipped with an inner container formed by joining. In this case, when the ink filled in the inner container is sucked and discharged from the spout, the inner container is made flexible according to the weight loss. The volume of a deep drawn container is reduced by being sucked and depressed toward the plastic tray-shaped container, thereby preventing the inflow of air and reducing the amount of ink remaining.

[0004] In a bag-in-box (BIB) format, an inner bag with a plastic spout is mounted in a small outer box such as a cardboard box, and an inner bag is inserted from the side where the spout is mounted. There is a cartridge type container of a type that is attached to the inner surface of the outer box up to about half the length of the cartridge. In this case, the bottom side of the inner bag is gradually sucked and drawn into the spout portion in accordance with the reduction in the amount of the ink filled in the inner bag, whereby the volume of the inner bag is reduced, and air inside the inside is reduced. The ink can be sucked and discharged so as to reduce the residual ink while preventing the inflow.

[0005]

Although such a cartridge-type container is almost satisfactory in terms of simplicity of attachment to a printing device and the like, and functions during use, any of the above-mentioned cartridge-type containers requires an outer box and an inner container or inner bag. Due to the double structure, the ratio of container cost to the product is relatively high, and the container is bulky, so that after the container is manufactured, for example, the efficiency of storage and transportation until ink filling, and furthermore, the disposal treatment after use There was a problem in terms of volume reduction at the time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object the following.
For example, it is a cartridge-type bag that can be used by hermetically packaging ink having fluidity such as viscous liquid ink and attaching it to a printing apparatus as it is when used.The structure can be simplified and cost can be reduced. The empty bag is not bulky, the efficiency of storage and transportation is high, the volume can be reduced when disposing after use, the preservation of the ink is also good, the installation to the printing device is easy, An object of the present invention is to provide a cartridge-type bag excellent in performance, suitability for use, economy, disposal property, etc., in which air does not enter and the amount of ink remaining in the bag after use can be reduced. .

[0007]

The above objects can be attained by the present invention described below. That is, the invention described in claim 1 is a laminated film bag provided with an openable / closable spout made of a plastic molded body at an upper edge portion, and an outer periphery of a side portion is provided on the upper portion of the bag. A cartridge-type bag formed of a cover film attached so as to cover the bag, and the cover film is bonded so as to form a plurality of vertical cylindrical voids on an outer periphery of an upper portion of the bag. And a cartridge-type bag.

By adopting such a structure, the cartridge type bag of the present invention does not use an outer box made of a cardboard or the like outside the bag with a spout which can be opened and closed and is made of plastic. The bag covers the outer periphery of the upper side of the bag in the horizontal direction, and is bonded so as to form a plurality of vertical cylindrical voids, so that the empty bag can be folded. It is not bulky, has good storage and transportation efficiency, and can be reduced in volume when disposed after use. In addition, the bag has a plastic spout that can be opened and closed, so it can be used not only as a spout for ink and other contents, but also as an injection port, making it easy to attach to a printing machine. Can be done.

The bag filled with the ink swells to have a three-dimensional shape. Since the cover film is adhered to the outer periphery of the upper portion of the bag, the rigidity of at least this portion is increased, and the form is increased. Stabilized and appearance improved. Also, when used in a printing press, the mounting portion of the cartridge type bag on the printing press side should correspond to a plurality of vertical cylindrical voids provided on the outer periphery of the upper side of the bag. By providing the rod-shaped support, the cartridge-type bag can be attached to the printing machine such that the support is inserted into the cylindrical gap. By attaching in this way,
Since the upper part of the cartridge type bag, that is, the side where the spout is provided, is securely held in an expanded state, without being blocked, during use, the ink is sucked and discharged from the spout. Depending on the ink loss, the bag
The bottom is gradually drawn into the spout side and moves so as to fit inside the portion where the cover film is provided. Accordingly, no air flows into the interior to the end, and the ink can be used effectively so that the ink is stable and the residual amount of the ink is reduced.

[0010] The invention described in claim 2 is characterized in that the cover film is provided in a region extending from the upper part of the bag to the lower part thereof to a position corresponding to a half of the entire length thereof. Item 7. A cartridge type bag according to Item 1.

By adopting such a configuration, in addition to the operation and effect of the invention described in the first aspect, during use of the cartridge-type bag in the printing machine, the bottom of the bag is filled according to the reduction in the amount of ink. When the bent portion of the bag reaches a position corresponding to a half of the total length when the bag is drawn to the exit side, the advance is automatically stopped by the cover film (including the support). At this time, since the bottom of the bag is located just in contact with the upper side, the remaining amount of ink can be reduced more reliably.

In the invention described in claim 3, the laminated film bag is formed by folding the upper film inward between the upper and lower wall films at least between the upper and lower wall films. It is formed in a form having a gusset part formed by insertion, and one of the gusset parts before and after the gusset part is heat-sealed with a seal pattern in which the inside has a concave shape from both sides to the center part. ,
The other pleated portion is provided with protrusions on the upper portion thereof by extending the films on both sides, that is, the wall film and the upper surface film opposed thereto, and both end portions of the pleated portion including the protrusions are provided. An edge portion is heat-sealed to a shape extending from the base of the fold portion to an upper side of the protrusion, and an openable spout made of a plastic molded body is provided at an upper edge of the protrusion. The cartridge-type bag according to claim 1 or 2, which is formed.

By adopting such a configuration, in addition to the functions and effects of the invention described in claim 1 or 2, at least the upper portion of the cartridge type bag is formed in a gusset type using an upper surface film. The top of the bag filled with ink is greatly expanded in a tubular shape, and the shape is firmly maintained by the cover film. And
When attaching a cartridge type bag to a printing press and using it,
Since the top of the bag is larger than the bottom, the bottom of the bag is more easily drawn into the spout as the amount of ink is reduced, so that air does not flow into the interior to the end and ink remains. It can be sucked and discharged so as to reduce the amount.

According to a fourth aspect of the present invention, a plurality of rod-shaped columns are respectively inserted into a plurality of vertical cylindrical gaps formed by a cover film around the upper side of the cartridge type bag. The cartridge type bag according to any one of claims 1 to 3, wherein the cartridge type bag is held.

In the above, the method of holding the rod-shaped support in the cylindrical space is, for example, by bonding the rod-shaped support to either the cover film side or the bag side of the cylindrical space. The column may be held, and the upper and lower edges of the cylindrical gap may be sealed by heat bonding or the like, and the column may be sealed in the cylindrical gap.

By adopting such a configuration, in addition to the functions and effects of the invention described in any one of claims 1 to 3, the cartridge type bag is attached so as to cover the outer periphery of the upper side portion. The rod-shaped columns are inserted and held in advance in a plurality of vertical cylindrical voids formed by the cover film, so that the rigidity of this portion is increased and the shape of the bag after ink filling is stabilized. In addition, when installed on a printing press and used, even if there is no support provided on the machine side, the bottom part is drawn into the spout side in accordance with the reduction of ink, and the lower end of the cover film in the final stage As a result, the bag is turned inward, so that air can be sucked and discharged so that air does not flow into the bag and the amount of remaining ink is reduced.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The laminated film used for the cartridge-type bag of the present invention, the cover film adhered to the outside of the bag, the material of the spout and the like, and the manufacturing method of the cartridge-type bag are described below. An embodiment will be described. First, the laminated film used for the cartridge-type bag of the present invention is mainly a plastic-based laminated film, but is not particularly limited, and is a known laminated film used for a packaging bag for contents such as liquid. Any of the films can be used, and a laminated film having an appropriate configuration can be appropriately selected and used according to the components of the ink to be filled. As a typical example of the configuration of such a laminated film, the following configuration is given.

(1) ON film / adhesive / L·LDPE
Film (sealant layer) (2) ON film / adhesive / biaxially stretched HDPE film / adhesive / L / LDPE film (sealant layer) (3) ON film / adhesive / biaxially stretched PP film / adhesive / L・ LDPE film (sealant layer) (4) ON film (silica or alumina or aluminum deposited layer) / adhesive / biaxially stretched HDPE film / adhesive / L ・ LDPE film (sealant layer) (5) ON film (silica or Alumina or aluminum deposited layer) / adhesive / biaxially oriented PP film / adhesive /
L / LDPE film (sealant layer) (6) ON film / adhesive / aluminum foil / adhesive /
L / LDPE film (sealant layer) (7) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (sealant layer is L / LDPE layer) (8) ON film / anchor coat layer / Co-extrusion coat layer (HDPE layer / EVOH layer / L-LDPE layer) (Sealant layer is L-LDPE layer) (9) PET film / adhesive / ON film / adhesive /
L · LDPE film (sealant layer) (10) PET film (silica or alumina or aluminum deposited layer) / adhesive / ON film / adhesive / LL
DPE film (sealant layer) (11) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / L-LDPE film (sealant layer) (12) PET film / adhesive / EVOH film / adhesive / ON film / adhesive / L-LDPE film (sealant layer) However, the present invention is not limited to this, and laminated films having various structures can be used.

In the above structure, the ON film is a biaxially stretched nylon film, the L / LDPE is a linear low density polyethylene, the HDPE is a high density polyethylene, the LDPE is a low density polyethylene, the PP film is a polypropylene film, and the PET film is biaxial. Stretched polyethylene terephthalate film, EVOH, refers to saponified ethylene-vinyl acetate copolymer. In addition, the anchor coat is a kind of primer coat that is previously coated on the base film side in order to improve adhesiveness when laminating a resin by extrusion coating.

In the construction of the laminated film, ON
Films and PET films are used as base films to impart mechanical strength and printability to bags, and to provide biaxially stretched HD
The PE film and the biaxially stretched PP film are laminated to improve the moisture permeability (moisture proof) in addition to the mechanical strength. And silica or alumina or aluminum vapor deposition layer, aluminum foil, EVOH layer, EVOH film, etc., are mainly laminated to improve gas barrier properties, except for EVOH layer, EVOH film,
The water vapor permeability can also be reduced. By laminating these layers on the intermediate layer, the storage stability of the contents can be improved.

As the sealant layer, L·LDP
Although only the example of the E film is given, the L / LDPE film is excellent in heat sealing stability and content resistance, for example, stress cracking resistance to surfactants, water resistance, and the like. Suitable for packaging, etc.

In addition to the above, the sealant layer may be made of polypropylene, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, depending on the components of the ink to be filled and the material of the spout. A combination, an ethylene / acrylate copolymer, an ionomer, a polyester resin, and the like can also be appropriately selected and used.

In particular, the ethylene / α-olefin copolymer obtained by polymerization using a single-site catalyst such as a metallocene catalyst has a narrow molecular weight distribution and a stable copolymerization ratio, so that the low-temperature heat sealability and It is excellent in hot sealing property, and for example, as in the cartridge type bag of the invention described in claim 3, the film overlaps with the heat sealing portion, such as between the gusset portion such as the upper portion and the body sealing portion. It is suitable for bags with steps due to the difference in height, and for the sealant layer of bags in which a spout made of plastic molding is joined to the inner surface of the bag by thermal bonding, because pinholes due to missing seals can be prevented. ing. Further, by using the copolymer blended with an olefin-based elastomer, the heat fluidity of the sealant layer is improved, and the occurrence of pinholes due to the step or the like can be more effectively prevented.

The spout made of a plastic molded body attached to the cartridge-type bag of the present invention is formed by inserting the adhesive base between the films on both sides of the upper edge portion of the bag, and forming a sealant layer on the bag. It is preferable to perform thermal bonding using a thermo-sealing head or an ultrasonic sealing method using a heat seal head because of good productivity and excellent bonding performance. The spout itself can be easily manufactured by, for example, injection molding of plastic, and its shape may be a two-piece type in which the spout and the cap are separately molded. It may be a one-piece type integrally formed through a thin portion.

For such a spout, a spout having a shape in which an obstruction preventing rib (a cross-sectionally shaped bar-like rib) is provided below the adhesive base can be used, so that the ink remains more reliably. The amount can be reduced. When the spout is of the two-piece type, for example, after joining the spout to the bag, the contents are filled from the opening of the spout, and before the cap is closed, the opening is made of a laminated film. The sealing material can be thermally sealed so as to be securely sealed. The material of the spout needs to be able to be thermally bonded with the sealant layer of the bag, and for example, polypropylene, polyethylene such as medium density or high density, and polyester can be used.

Next, the cover film attached so as to form a plurality of vertical cylindrical voids on the outer periphery of the upper side of the bag is not particularly limited, but the rigidity of the cover film used for the bag is not limited. Is preferably higher than the laminated film,
In addition, anything that can be adhered to the outside of the bag and can be formed to be foldable can be used. For example, the thickness may be increased in the same configuration as the laminated film of the bag, or may be a single or composite film of a plastic such as polypropylene or polyethylene terephthalate. Processed paper having a plastic film laminated on the surface or resin-impregnated paper may be used. The method of attaching such a cover film to the surface of the bag may be, for example, bonded using an adhesive such as a hot melt adhesive, or a part coat agent, or a heat-sensitive adhesive such as a heat sealant. Necessary portions may be coated in a pattern in advance and then thermally bonded.

Also, a plurality of vertical cylindrical gaps formed by a cover film on the outer periphery of the upper side of the bag,
When inserting a rod-shaped column in advance and holding it, the column should have a rigidity that does not easily bend, especially when a vertical force is applied, and it is preferable that the column be as light and inexpensive as possible. A support made of a general-purpose resin (which may be a recycled resin) such as polypropylene, polyester, or ABS resin is suitable.

A method of manufacturing the cartridge-type bag of the present invention, which is manufactured using the above-described laminated film, spout, cover film, and the like, will be described. The type of the bag itself as the main body of the cartridge type bag of the present invention is not particularly limited. For example, a pillow type (the position of the back seal is shifted to the left or right so as not to overlap the joining position of the spout. Various types such as a three-sided seal type, a four-sided seal type, a tube type, a modified gusset pouch type provided with a gusset part at an upper part or an upper part and a lower part (see FIGS. 3 and 4) are preferable. Bags can be used.

In the case of a pillow type, a three-side seal type, a four-side seal type, etc., such a bag can be manufactured using an existing bag-making machine. In the case of the modified gusset pouch type in which gusset portions are provided in the upper portion or the upper and lower portions, for example, a conventional bag making machine for a standing pouch (in the case of a bag having a gusset portion in the upper and lower portions, 2 Using a bag making machine for line-to-line bag making for one-row bag making) requires addition or change of a heat sealing device or a trimming device, but bag making can be performed without any problem. For example, when extending one gusset of the gusset at the top of the bag to provide a protrusion and attaching a spout to that portion, the gusset on the side where the protrusion is provided, and the other gusset However, it is necessary to heat seal separately, but it is possible to make a bag without any problem by dividing into a plurality of sections and heat sealing.

In the case of a bag of a three-sided seal type or a four-sided seal type, the spout can be mounted in-line by incorporating a spout mounting device into a bag making machine. Prepare the device separately,
Off-line attachment after bag making is rather preferable in terms of overall productivity and quality stabilization. Regarding the attachment of the cover film, depending on the type of bag,
Although it is possible to attach in-line with bag making, it may be attached off-line after bag making.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below more specifically with reference to the drawings. However, unless the present invention exceeds the gist,
It is not limited to the following drawings. Further, the same reference numerals are used for the parts having the same names in different drawings. FIG. 1 is a plan view showing the configuration of a first embodiment of a cartridge type bag according to the present invention, and FIG.
FIG. 2 is a perspective view showing the shape of the cartridge-type bag shown in FIG. 1 after the contents are filled. FIG. 3 is a plan view showing the configuration of a second embodiment of the cartridge type bag according to the present invention. FIG. 4 is a plan view showing the configuration of the third embodiment of the cartridge type bag according to the present invention.

FIG. 1 shows a first embodiment of the cartridge type bag according to the present invention.
1 is a plan view showing a configuration of an embodiment of the present invention. The cartridge type bag 100 shown in FIG. 1 has a main body formed of a pillow type bag, a laminated film in which a sealant layer is laminated on the innermost layer, That is, both sides of the wall film 1 are folded back so that the sealant layer is on the inside, and the edge portions on both sides of the folded wall film are placed on the back seal portion 8 (in this case, the back seal portion 8) such that the sealant layers face each other. Seal part 8
Is moved to the side to avoid overlap with the spout) and heat-sealed, and the back seal portion 8 is folded down to one side (outward) to form a cylindrical body, When the upper edge portion is heat-sealed with the upper seal portion 13 to form a bag, an openable / closable spout 20 made of a plastic molded body is provided between the films on both sides by the adhesive base 2.
2 is inserted so as to be sandwiched, and bonded by thermal bonding at the upper seal portion 13. A cover film 15 is provided on the outer periphery of the upper side of the bag at a predetermined distance from the upper end (when the contents are filled in the bag). When the bag is inflated, cover the periphery in the horizontal direction from the position where the distance corresponding to the rising portion to be formed, see FIG. 2) is opened, to the position corresponding to approximately 1/2 of the entire length downward. Further, it is configured to be bonded by the bonding portion 16 so as to form a plurality of vertical cylindrical void portions 17.

The plurality of vertical cylindrical void portions 17 are provided.
Are preferably provided so as to be symmetrical on both front and rear surfaces of the bag. In the cartridge type bag 100 shown in FIG. 1, three are provided on the front side and three are also provided on the rear side (not shown). ) Is provided, and a total of six cylindrical void portions 17 are provided. However, such a cylindrical gap 17
When the cartridge type bag 100 is used by attaching it to a printing machine or the like, for example, if a rod-shaped support is provided at the mounting portion on the machine side, the cartridge-type bag 100 is inserted into the support and attached so as to correspond to the support. In addition, the number, interval and the like can be appropriately set and provided. In addition, for example, as shown in the perspective view of FIG.
It is preferable that the bulge has a moderate height such as a semicylindrical shape, but the bulge height may be smaller and almost flat.

In this case, the spout 20 has a cylindrical portion 21 as a main body, an adhesive base 22 provided at a lower portion, a flange 23 provided thereon as appropriate, and a separate screw type cap 24 at an upper portion. Is attached. Before the cap 24 is attached to such a spout 20, a sealing material made of a laminated film may be thermally bonded to the opening of the spout to improve the sealing property.

The filling of the bag 100 with the ink is performed by the cap 2
4 may be performed from the spout 20 with the bag removed, but in this case, since the bottom of the bag has a flat shape,
The bottom can be used as a filling port for ink. When the bottom is used as the filling port, the filling port is wider, the filling operation is easier, the filling speed can be increased, and the productivity can be improved. In that case, the bottom seal part 9
Before the ink is filled, the opening is unsealed, and after the ink is filled, the opening is heat-sealed.

By adopting such a configuration, the cartridge-type bag 100 is flat and not bulky in an empty bag state,
Storage and transportation can be performed efficiently, and the volume can be reduced when disposing after use. And the cartridge type bag 1
In the case of No. 00, since the ink filling portion is formed by a pillow-type bag made of a laminated film and the spout 20, the sealing property is good and the preservability of ink is good.

When the cartridge-type bag 100 is used in, for example, a printing machine, a spout 20 is provided on the top of the bag 100, and a cover film 15 is provided on the outer periphery of the upper side.
As a result, a plurality of vertical cylindrical void portions 1 as described above are formed.
7, the cartridge-type bag 100 is
If the bag can be easily attached to the printing press as it is, and at the same time a bar-shaped support is provided on the printing press side so as to correspond to the vertical cylindrical void portion 17 of the bag,
The bag 100 is inserted in such a manner that the column is inserted into the cylindrical gap 17.
Can be attached to the printing press.

By attaching the bag 100 to the printing machine in this manner, the upper half of the bag 100 is held in a wide open state, so that the upper portion is not blocked, and the ink in the bag is used during use. In accordance with the weight loss, the bottom of the bag is easily pulled into the bag and gradually moves to the spout side.
There is no air in the interior, and in the final stage of use, the bottom and upper sides of the bag are in contact with each other, so that the bag can be used effectively with almost no residual ink. Further, even in a case where the printing column is not provided with the rod-shaped columns, the cylindrical void portion 17 also has a rib function by increasing the rigidity by increasing the thickness of the cover film 15 or the like. Therefore, the same operation and effect as those in the case of using the pillar can be obtained.

FIG. 3 shows a second embodiment of the cartridge type bag according to the present invention.
It is a top view which shows the structure of Example of this. The cartridge-type bag 200 shown in FIG. 3 is different from the cartridge-type bag 100 shown in FIG. 1 in that the shape of the bag body is changed from the pillow type to the upper portion of the four-side seal type bag as described in detail below. And a cover film 15 provided on the outer periphery of the upper side of the bag.
Is configured such that only the upper side thereof is changed to a shape extended to near the upper end of the gusset portion 6.

That is, the bag body is composed of wall films 1 on both sides,
1 ′, an upper film having the same structure as the wall film is folded inward between the upper portion and the upper film folding portion 2 and inserted, and a gusset portion 6 is provided on the upper portion.
Near the upper end of both side edges of the folded top film,
The upper film cutouts 4 and 4 are provided, and among the folds on the front and rear sides of the gusset 6, the folds on the back side in the figure are seal patterns in which the inside is depressed from both sides to the center. Specifically, the inner side is depressed in a straight line inclined from both sides toward the center, and is formed into an inverted ship bottom-shaped seal pattern that is a horizontal straight line at the center, that is, heat-sealed with the upper gusset part back side seal part 14, and On the upper side of the front fold portion, the projecting portion 11 is formed by extending the films on both sides, that is, the wall film 1 and the upper surface film opposed thereto, so that the width decreases on both sides toward the upper direction.
The upper seal portion 12 has a shape in which both side edges of the front fold portion including the protrusion portion 11 are connected to the base line of the fold portion to the upper side of the protrusion portion 11 by an inner straight line connected by an inclined straight line. , 12 and a spout 20 made of a plastic molded body is joined to the upper part of the protruding part 11 by thermal bonding at an upper seal part 13 to form an upper part of the bag. The left and right side edges of the wall films 1, 1 'on both sides are sealed with the side seal portions 10, 1'.
0 and heat-sealed.

Incidentally, the bottom of the bag is formed on both side wall films 1,
1 'is formed by heat-sealing the lower edge portion with a bottom seal portion 9. In this case as well, like the cartridge type bag 100 shown in FIG. Since it can be used, the bottom seal part 9 is heat-sealed and sealed after filling the contents.

By adopting such a configuration, the upper portion of the cartridge type bag 200 is formed in a gusset form in comparison with the cartridge type bag 100 shown in FIG. Since the cover film 15 is provided so as to cover the outer periphery of the upper side of the bag from the vicinity to a position corresponding to approximately 1/2 of the entire length of the bag, for example, by filling the ink from the bottom of the bag, Bag 2
In the case of 00, the upper portion is largely spread in a hexagonal column shape together with the cover film, and the shape stability and shape retention are excellent.

Therefore, when the cartridge-type bag 200 is used by being attached to a printing press, the spout can be easily connected to the printing press by connecting the spout as it is, and the upper portion of the bag 200 can be placed on the printing press side. In the case where a rod-shaped support is provided so as to correspond to the plurality of vertical cylindrical voids 17 formed on the outer periphery of the side part, the support is inserted into the cylindrical void 17. Bag 200 can be attached to a printing press. By attaching the bag 200 to the printing machine in this manner, the upper half of the bag 200 is securely held in a state of being spread in a hexagonal column shape, so that when sucking and discharging ink, the upper portion of the bag may be closed. No, and during use,
As the amount of ink in the bag is reduced, the bottom of the bag is more easily drawn into the upper side of the widely spread bag and gradually moves to the spout, so that no air flows into the inside,
Further, in the final stage, the bottom portion and the inner surface of the upper portion of the bag are in contact with each other, so that the bag can be effectively used with almost no residual ink.

FIG. 4 shows a third embodiment of the cartridge type bag according to the present invention.
It is a top view which shows the structure of Example of this. The cartridge-type bag 300 shown in FIG. 4 is the same as the cartridge-type bag 200 shown in FIG. 3 except that the shape of the bag body is changed not only at the upper part of the bag but also at the lower part. A seal pattern in which the lower gusset part is depressed from both sides to the center, and in this case, the bottom is lower in the center, and rises linearly inclining toward both ends. And heat-sealed according to the seal pattern.

That is, in the cartridge type bag 300, the upper and lower portions of the bag body are disposed between the upper and lower portions of the wall films 1, 1 'on both sides, and each of the upper films has the same structure as the laminated film used for the wall film. Alternatively, the bottom film is folded inward, and in the case of the top film, the top film cutouts 4 and 4 are provided near the upper ends of both side edges, and in the case of the bottom film, both side edges are provided. Gusset portions 6 and 7 are provided by providing bottom film cutout portions 5 and 5 in the vicinity of the lower end, inserting the top film folded portion 2 and the bottom film folded portion 3 respectively, and heat-sealing with a predetermined seal pattern. The body is formed by heat-sealing both side edges of the wall films 1, 1 'with side seals 10, 10.

The lower gusset part 7 has
The center bottom is low, and the bottom bottom seal portion 9 is heat-sealed at the bottom seal portion 9, and the gusset portion 6 on the front side of the upper gusset portion 6 The upper side is provided with a protrusion 11 having a shape in which the film on both sides, that is, the wall film 1 and the upper surface film opposed thereto are extended, and the width is reduced on both sides toward the upper direction. Both side edges of the front pleats including the upper pleats are heat-sealed by upper seals 12, 12 having a shape in which the inner line is connected by an inclined straight line from the base of the pleats to the upper side of the protrusion 11.
A spout 20 made of a plastic molded body is joined to the upper part of the protruding part 11 by thermal bonding at an upper seal part 13, and a pleated part on the back side of the upper gusset part 6 is
The bottom seal portion 9 is formed by inverting the top and bottom of the bottom seal portion 9, that is, by heat sealing with the upper gusset portion rear side seal portion 14.

The structure of the spout 20 itself is as shown in FIG.
Since they are the same as those used for the cartridge-type bags 100 and 200 shown in FIG. 3, the description will be omitted. In addition, bag 30
Cover film 1 attached to the outer periphery of the upper part
5, the cover film attached to the cartridge-type bag 100 shown in FIGS.
Although the attachment range is slightly different, the operation and effect are substantially the same, and further, since the cover film attached to the cartridge type bag 200 shown in FIG. Omitted.

In this case, since it is difficult to fill the bag 300 with ink from the bottom, it is necessary to perform the filling from the spout 20 with the cap 24 removed. For this reason, the filling speed etc. slightly decreases, but after filling the ink,
Before attaching the cap 24, a sealing material made of a laminated film is thermally bonded to the opening of the spout 20 to improve the sealing property.

By adopting such a configuration, the cartridge-type bag 300 is flat and bulky in an empty bag state, and can be stored and transported in an empty bag state, like the cartridge-type bags 100 and 200 shown in FIGS. It can be carried out efficiently, and the volume can be reduced at the time of disposal after use. And the bag 30
The main body part 0 is made of a laminated film, and is formed in a deformed gusset pouch type having gusset parts 6 and 7 on the upper and lower sides, and the lower gusset part 7 has a lower inner central part toward the both end parts. Heat-sealed at the bottom seal portion 9 of a ship bottom shape which rises linearly, and the upper gusset portion 6
However, since the heat seal is performed with the inverted bottom seal pattern in which the top and bottom of the seal pattern of the substantially bottom seal portion 9 are inverted, the ink-filled bag 300 has a hexagonal prism shape over the entire body of the bag. It has better compatibility with the cover film, is compact and takes up little space for its capacity, and is excellent in appearance, similar to a shape-retaining container such as a bottle, even though it is a bag. Further, a ring-shaped leg portion is formed on the outer periphery of the bottom portion by the bottom seal portion 9, so that the leg portion is excellent in self-sustainability and easy to handle.

When the cartridge-type bag 300 is used in a printing machine, a spout 20 is attached to the upper portion of the bag, and a cover film 15 is provided around the upper side portion by a cover film 15.
Since the plurality of vertical cylindrical void portions 17 are formed, the spout 20 can be easily connected to the printing press side as a bag and used, and the printing press side includes In the case where a rod-shaped support is provided so as to correspond to the cylindrical gap 17 in the vertical direction of the bag, the bag 300 can be attached to the printing machine by inserting the support into the cylindrical gap 17. it can. Therefore, the upper half of the bag 300 is securely held in a widely opened state, so that the upper portion does not become blocked when the ink is sucked and discharged, and the amount of ink in the bag is reduced during use. The bottom of the bag is pulled into the bag,
Since it gradually moves to the spout side, the air is smoothly drawn into the spout side without air entering the inside. And
In the final stage of use, the top and bottom surfaces of the bag are almost perfectly in contact with each other, so that the bag can be used effectively with almost no residual ink. In addition, the cartridge type bag of the present invention has been described as an example in which the cartridge type bag is used for ink.
Suitable for a wide range of viscous liquids such as wasabi and mustard, as well as various liquids with good fluidity, and viscous liquids, as well as by adjusting the suction force. You can do it.

[0051]

As described above in detail, according to the present invention, ink having fluidity such as liquid and viscous liquid,
A cartridge-type bag that can be used for packaging other contents in a sealed package and attached to a printing machine or other processing equipment as it is when used.The structure can be simplified, cost can be reduced, and empty The bag is not bulky, has good storage and transportation efficiency, can reduce the volume when disposing after use, and has good preservability when ink is filled as a content, and is easy to attach to a printing machine. It can be used in a stable state without air flowing into the bag during use, and the amount of ink remaining in the bag after use can be reduced. In addition, it is possible to provide a cartridge-type bag that is generally excellent in terms of disposability and the like.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a first embodiment of a cartridge type bag according to the present invention.

FIG. 2 is a perspective view showing a shape of the cartridge type bag shown in FIG. 1 after the contents are filled.

FIG. 3 is a plan view showing a configuration of a second embodiment of the cartridge type bag according to the present invention.

FIG. 4 is a plan view showing a configuration of a third embodiment of the cartridge type bag according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Wall film 2 Top film folded part 3 Bottom film folded part 4 Top film cutout part 5 Bottom film notch part 6, 7 Gusset part 8 Back seal part 9 Bottom seal part 10 Side seal part 11 Projection part 12 Upper seal part 13 Upper seal part 14 Upper gusset part Rear seal part 15 Cover film 16 Adhesive part 17 Cylindrical void 20 Spout 21 Tube part 22 Adhesive base 23 Flange 24 Cap 100, 200, 300 Cartridge bag

Continued on front page F-term (reference) 2C056 EA24 KC10 KC14 2C250 DB24 3E064 AA13 BA17 BA27 BA28 BA29 BA30 BA36 BA46 BA54 BA55 BA60 BB03 BC04 BC07 BC08 BC18 BC20 EA01 EA30 FA05 GA01 HF01 HF10 HG03 HM01 HN65

Claims (4)

[Claims] 1. A bag made of a laminated film having an openable spout made of a plastic molded body at an upper edge portion, and a cover attached to an upper portion of the bag so as to cover an outer periphery of a side portion. A cartridge-type bag formed of a film and the cover film, wherein the cover film is adhered to form a plurality of vertical cylindrical voids on an outer periphery of an upper portion of the bag. And a cartridge bag. 2. A cartridge type bag according to claim 1, wherein said cover film is provided in a region from an upper portion of said bag toward a lower portion thereof to a position corresponding to a half of its entire length. . 3. A bag made of a laminated film, wherein at least one of the upper part and the lower part has a gusset part formed by folding an upper surface film inward and inserting it between upper parts of front and rear wall films. One of the gussets formed before and after the gusset portion is heat-sealed with a seal pattern in which the inside is depressed from both sides to the center, and the other fold is formed. At the upper part thereof, a projection is provided by extending the film on both sides, i.e., the wall film and the upper surface film opposed thereto, and both side edges of the pleats including the projection are formed by the pleats. Heat-sealed in a shape extending from the base of the protruding portion to the upper side of the protruding portion, and an opening / closing spout made of a plastic molded body is provided at the upper edge of the protruding portion. Cartridge bag according to claim 1 or 2, symptoms. 4. A plurality of rod-shaped columns are inserted and held in a plurality of vertical cylindrical gaps formed by a cover film on the outer periphery of the upper part of the cartridge-type bag. The cartridge type bag according to any one of claims 1 to 3, wherein: