JP2019059196A - Ink storage pack - Google Patents

Abstract

To provide an ink storage pack that has excellent self-standing property.SOLUTION: An ink storage pack has a folding back part that is folded back by a folding line along a side seal part. The folding line is positioned on a pack inner side relative to an inner end edge of the side seal part. The ink storage pack has a multiple structure in which the folding back part is further folded back.SELECTED DRAWING: Figure 1D

Description

  The present invention relates to an ink storage pack.

  Conventionally, a gusset pouch having a hanging or handle hole in a heat seal portion is known (see, for example, Patent Document 1).

JP 2005-212884 A

However, when the above-described gusset pouch is used, for example, as a container for supplying ink to an ink tank of a printer, there is a problem that the container itself is difficult to stand.
If the container is difficult to stand on its own, the pouring attitude to the ink tank becomes unstable and the ink drips. In addition, even when the container is directly attached to the printer, the posture of the container becomes unstable and the workability is reduced.
The present invention has been made to solve such problems, and aims to improve the self-supporting property of the ink storage pack.

  The present invention can be realized as the following forms or application examples.

  [Application Example 1] The ink storage pack according to this application example is an ink storage pack having a folded portion formed by being folded back along a fold line along the side seal portion, wherein the fold line is an inner end of the side seal portion. Located on the inner side of the pack than the edge, the folded portion has a multiple structure further folded back.

According to this configuration, since the folded back portion has a multiple structure, the rigidity is enhanced, and the self-supporting property of the ink storage pack can be enhanced. Furthermore, the pouring attitude to the ink tank is stabilized, and the dripping of the ink can be suppressed.
In addition, crushing (choke) at the central portion of the ink storage pack can be suppressed. Thus, the ink stored on the bottom side of the ink storage pack can be efficiently discharged.

  Application Example 2 The ink storage pack according to this application example is an ink storage pack including a seal portion obtained by sealing the front side film and the rear side film, and an unsealed portion which is not sealed. Between a first unsealed portion positioned between a pair of first side seal portions extending in a direction, and a pair of second side seal portions extending away from the first unsealed portion and spaced from the first unsealed portion A second unsealed portion located in the second portion, the first unsealed portion being a portion to be filled with the ink, and the second unsealed portion being a shape-retaining portion for enhancing the shape retention of the pack It is a portion to be filled with a substance, and the pair of second side seal portions face an inner second side seal portion located on the first unsealed portion side and the inner second side seal portion An outer second side seal portion; The side second side seal portion extends along the side edge of the ink containing pack and does not reach the upper edge of the bag, and the second unsealed portion is a portion of the outer second side seal portion. The upper unsealed portion is located above the upper edge and the upper unsealed portion extends to the upper and side edges of the bag.

According to this configuration, the portion to be filled with the shape-retaining substance is formed, and the shape-retaining property of the ink storage pack can be enhanced. Thereby, the self-supporting property of the ink containing pack can be enhanced. Furthermore, the pouring attitude to the ink tank is stabilized, and the dripping of the ink can be suppressed.
In addition, crushing (choke) at the central portion of the ink storage pack can be suppressed. Thus, the ink stored on the bottom side of the ink storage pack can be efficiently discharged.

  Application Example 3 The ink storage pack according to this application example is an ink storage pack in which the bottom member folded in half is sandwiched between the lower ends of the front and back films with the folding portion up, and the peripheral portion is sealed. It is characterized in that the material is provided with an independent filling chamber separate from the content storage unit.

  According to this configuration, since the independent filling chamber is provided, the self-supporting property of the ink containing pack can be enhanced. In addition, the pouring attitude to the ink tank is stabilized, and the dripping of the ink can be suppressed.

FIG. 1 is a perspective view showing a configuration of a printing system according to a first embodiment. FIG. 5 is a perspective view showing a state in which the cartridge is attached to the holder according to the first embodiment. FIG. 6 is a perspective view showing how the ink cartridge is attached to the holder according to the first embodiment. FIG. 1 is a schematic view showing the configuration of an ink storage pack according to a first embodiment. FIG. 1 is a schematic view showing the configuration of an ink storage pack according to a first embodiment. FIG. 1 is a schematic view showing the configuration of an ink storage pack according to a first embodiment. FIG. 1 is a schematic view showing the configuration of an ink storage pack according to a first embodiment. FIG. 1 is a schematic view showing the configuration of an ink storage pack according to a first embodiment. FIG. 5 is a schematic view showing the configuration of an ink storage pack according to a second embodiment. FIG. 5 is a schematic view showing the configuration of an ink storage pack according to a second embodiment. FIG. 5 is a schematic view showing the configuration of an ink storage pack according to a second embodiment. FIG. 5 is a schematic view showing the configuration of an ink storage pack according to a second embodiment. FIG. 7 is a schematic view showing the configuration of an ink storage pack according to a third embodiment. FIG. 7 is a schematic view showing the configuration of an ink storage pack according to a third embodiment. FIG. 7 is a schematic view showing the configuration of an ink storage pack according to a third embodiment. Schematic which shows the structure of the ink containing pack concerning 4th Embodiment. Schematic which shows the structure of the ink containing pack concerning 4th Embodiment. Schematic which shows the structure of the ink containing pack concerning 4th Embodiment. Schematic which shows the structure of the ink containing pack concerning 4th Embodiment. Schematic which shows the structure of the ink containing pack concerning 4th Embodiment. Schematic which shows the structure of the ink containing pack concerning 4th Embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fourth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fourth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fourth embodiment. FIG. 11 is a schematic view showing the configuration of an ink storage pack according to a fifth embodiment. FIG. 11 is a schematic view showing the configuration of an ink storage pack according to a fifth embodiment. FIG. 11 is a schematic view showing the configuration of an ink storage pack according to a fifth embodiment. FIG. 11 is a schematic view showing the configuration of an ink storage pack according to a fifth embodiment. FIG. 11 is a schematic view showing the configuration of an ink storage pack according to a fifth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fifth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fifth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fifth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fifth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fifth embodiment. FIG. 14 is a schematic view showing the configuration of another ink containing pack according to the fifth embodiment. Schematic which shows the structure of the ink containing pack concerning 6th Embodiment. Schematic which shows the structure of the ink containing pack concerning 6th Embodiment. Schematic which shows the structure of the ink containing pack concerning 6th Embodiment. Schematic which shows the structure of the ink containing pack concerning 6th Embodiment. Schematic which shows the structure of the ink containing pack concerning 6th Embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the sixth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the sixth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the sixth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the sixth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the sixth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the sixth embodiment. Schematic which shows the structure of the ink containing pack concerning 7th Embodiment. Schematic which shows the structure of the ink containing pack concerning 7th Embodiment. Schematic which shows the structure of the ink containing pack concerning 7th Embodiment. Schematic which shows the structure of the ink containing pack concerning 7th Embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the seventh embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the seventh embodiment. FIG. 18 is a schematic view showing the configuration of an ink storage pack according to an eighth embodiment. FIG. 18 is a schematic view showing the configuration of an ink storage pack according to an eighth embodiment. FIG. 18 is a schematic view showing the configuration of an ink storage pack according to an eighth embodiment. FIG. 18 is a schematic view showing the configuration of an ink storage pack according to an eighth embodiment. FIG. 18 is a schematic view showing the configuration of an ink storage pack according to an eighth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the eighth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the eighth embodiment. FIG. 14 is a schematic view showing the configuration of an ink storage pack according to a ninth embodiment. FIG. 14 is a schematic view showing the configuration of an ink storage pack according to a ninth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the ninth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the ninth embodiment. FIG. 16 is a schematic view showing the configuration of an ink storage pack according to a tenth embodiment. FIG. 16 is a schematic view showing the configuration of another ink containing pack according to the tenth embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each member or the like is different from the actual scale in order to make each member or the like to be recognizable.

First Embodiment
First, the configuration of a printing system to which the ink storage pack according to the present embodiment can be applied will be described.
FIG. 1A is a perspective view showing the configuration of the printing system 1. The printing system 1 includes a printer 2 and a cartridge 50. In the printing system 1, the cartridge 50 supplies ink (printing material) to the printer 2 in a state where the cartridge 50 is attached to the holder 3 provided in the printer 2, and the printer 2 supplies the ink supplied from the cartridge 50. Execute printing using.

  The holder 3 of the printer 2 is a holding device for holding the cartridge 50. The holder 3 is formed with a slot SL which is an area for receiving the insertion of the cartridge 50. In the present embodiment, one slot SL is configured to be capable of receiving the insertion of one cartridge 50. In the present embodiment, the holder 3 is provided with one engaging portion 31 for one slot SL. The engaging portion 31 of the holder 3 is configured to be engageable with the cartridge 50 inserted into the slot SL, and prevents the cartridge 50 from being accidentally removed from the slot SL.

  In the present embodiment, in the holder 3, four cartridges 50 corresponding to four color (black, yellow, magenta, cyan) inks are mounted one by one, that is, four cartridges 50. The number of cartridges 50 that can be attached to the holder 3 is not limited to four, and can be changed to any number, and may be less than four or more than four. The ink of the cartridge 50 is not limited to four colors, may be less than four colors, may be five colors or more, inks of other colors (for example, light magenta, light cyan, etc.) and special gloss colors It may be an ink (metallic luster, pearl white, etc.). Further, the cartridge is not limited to the cartridge separated one by one for each color, but may be a cartridge in which plural colors of ink are contained in one cartridge. For example, a cartridge containing ink of one color (black) and a cartridge containing three colors (yellow, magenta, cyan) may be combined and mounted on the holder 3. In another embodiment, the holder 3 may be capable of mounting two or more cartridges 50 corresponding to the same type of ink. When two or more cartridges 50 of the same type are mounted, not only the cartridges 50 may be arranged in the X-axis direction, but a plurality of rows may be configured in the Z-axis direction, the Y-axis direction, etc. . The detailed configuration of the holder 3 will be described later.

  The printer 2 of the printing system 1 is a printing device that prints using ink, and in the present embodiment, is an inkjet printer. The printer 2 includes a control unit 22, a carriage 25, and a head 26 in addition to the holder 3. The printer 2 prints information such as characters, figures, and images on the print medium M by causing the head 26 to eject ink to the print medium M such as paper or a label.

  In the printer 2, the holder 3 is provided at a site different from the carriage 25, and the holder 3 on which the cartridge 50 is mounted is attached to the head 26 provided on the carriage 25 via the flexible tube 39. Is supplied. Thus, the mechanism of the printer 2 in which the holder 3 is provided at a portion different from the carriage 25 is also called an off-carriage type.

  The control unit 22 of the printer 2 controls each unit of the printer 2. In the present embodiment, the control unit 22 has a control circuit formed using an application specific integrated circuit (ASIC). The carriage 25 of the printer 2 is configured to move the head 26 relative to the print medium M. The head 26 of the printer 2 receives the supply of the ink from the cartridge 50 mounted on the holder 3 and discharges the ink to the print medium M. In the present embodiment, the control unit 22 and the carriage 25 are electrically connected via a flexible cable (not shown), and the head 26 discharges ink based on a control signal from the control unit 22. Run.

  In the present embodiment, in order to relatively move the carriage 25 and the print medium M to realize printing on the print medium M, the printer 2 is configured to be capable of reciprocating the carriage 25 along the main scanning direction Dms. The printing medium M can be transported along the sub scanning direction Dss. In the present embodiment, the main scanning direction Dms and the sub-scanning direction Dss are orthogonal to each other and orthogonal to the gravity direction. The printer 2 realizes the movement of the carriage 25 and the conveyance of the print medium M based on the control by the control unit 22.

  The XYZ axes are illustrated in FIG. 1A. The XYZ axes in FIG. 1A correspond to the XYZ axes in the other figures. In this embodiment, in the used state of the printing system 1, an axis along the main scanning direction Dms in which the carriage 25 is reciprocated is set as an X axis, and an axis along the subscanning direction Dss transporting the print medium M is set as a Y axis. The axis along the gravity direction is taken as the Z axis. These X, Y and Z axes are orthogonal to one another. The use state of the printing system 1 is the state of the printing system 1 installed on a horizontal surface, and in the present embodiment, the XY plane parallel to the X axis and the Y axis is a horizontal surface.

  In the present embodiment, the arrangement direction of the plurality of cartridges 50 mounted on the holder 3 is a direction along the X axis. In another embodiment, the arrangement direction of the plurality of cartridges 50 may be along the Y axis or along the Z axis, or in the X, Y, and Z axes. It may be inclined relative to at least one axis.

  In this embodiment, the right side surface of the printing system 1 is in the + X axis direction from the right side surface to the left side surface, and the opposite direction of the + X axis direction is the −X axis direction. In the present embodiment, the + Y axis direction is taken in the sub scanning direction, and the opposite direction to the + Y axis direction is taken as the −Y axis direction. In this embodiment, the direction toward the opposite side to the gravity is taken as the + Z-axis direction, and the gravity direction to which the gravity is directed is taken as the −Z-axis direction. In the present embodiment, the + Y axial direction side is the front of the printing system 1.

  The cartridge 50 of the printing system 1 is an ink supply device that supplies ink to the printer 2, and in the present embodiment, the ink supply device is capable of refilling the ink (refillable). As shown in FIG. 1A, in the present embodiment, the cartridge 50 has a substantially L-shaped outer shape, and the long side in the substantially L-shaped outer shape faces in the −Y axis direction, and the short in the substantially L-shaped outer shape. The holder 3 is mounted with the side directed in the −Z axis direction.

  The cartridge 50 is configured to be removable from the holder 3. FIG. 1A illustrates the state in which the cartridge 50 on the −X axial direction side of the four cartridges 50 is detached from the holder 3. FIG. 1B is a perspective view showing the cartridge 3 mounted on the holder 3. FIG. 1B illustrates the state in which all four cartridges 50 are attached to the holder 3.

  In the present embodiment, the user of the printing system 1 can mount the cartridge 50 on the holder 3 by moving the cartridge 50 in the −Y axis direction with respect to the slot SL of the holder 3. In the present embodiment, the user of the printing system 1 receives the cartridge 50 in a state in which the engagement with the cartridge 50 by the engagement portion 31 is released (for example, the state of the engagement portion 31 in the −X axial direction in FIG. The cartridge 50 can be removed from the holder 3 by moving in the + Y axis direction.

  The cartridge 50 includes a housing 51, a slider (sliding member) 60, and a circuit member 58. As shown in FIG. 1A, the housing 51 of the cartridge 50 is a box in which an ink storage portion 61 for storing ink is provided.

FIG. 1C is a perspective view showing how the cartridge 50 mounted on the holder 3 is refilled with ink.
When refilling the ink storage portion 61 of the cartridge 50 with the ink, the user opens the lid portion 62 of the slider 60 as shown in FIG. 1C, and then the lid 69 from the ink inlet 68 of the housing 51. Remove Thereafter, the user prepares the ink storage pack 100 as an ink storage container for storing the replenishment ink, and the ink S from the discharge port S of the ink storage pack 100 until the ink storage portion 61 is sufficiently filled with the ink. Ink is injected into the ink injection port 68. Thereafter, the user seals the ink inlet 68 with the lid 69 and closes the lid 62. This completes the replenishment of the ink.

Next, the configuration of the ink storage pack 100 will be described.
1D to 1F are schematic views showing the configuration of the ink storage pack.

  The ink containing pack 100 is positioned with the bottom film 103 folded between the side films 102a and 102b at the folding line 108, and the side seal portions 104a and 104b and the side film are formed by bonding both ends of the side films 102a and 102b. A bottom seal portion 106 in which the bottom film 103 is bonded to the bottom film 103 is formed.

  In the present embodiment, the bending process along the bending lines 107a and 107b is performed from the viewpoint of improving the self-supporting property of the ink storage pack 100 and softening the hand when gripping. The bending lines 107a and 107b extend in the axial direction along the side seal portions 104a and 104b, and are positioned on the inner side (the side of the storage portion 110) of the ink storage pack 100 than the inner end edges of the side seal portions 104a and 104b. This facilitates bending and improves the self-supporting property.

In addition, as shown in FIG. 1D, the folded portion is formed by bending at bending lines 107a and 107b, and the width direction end portion including the side seal parts 104a and 104b outside the bending lines 107a and 107b is folded. Make up the department.
Then, the ink storage pack 100 further performs the same bending process on the folded portion subjected to the bending process at the bending lines 107a and 107b to make the folded portion into a multiple structure. As a result, the rigidity of the folded portion is significantly improved, and the cut edge of the side film can be positioned inside the multiple structure, so that the contact is soft when grasped, and catching is effectively prevented. Furthermore, the self-supporting property of the ink containing pack 100 and the occurrence of buckling and wrinkles at the time of self-supporting are more effectively prevented.

In order to explain the multiple structure of the folded back portion of the ink storage pack 100, the folded back portion 112 which has been bent once at the folding lines 107a and 107b shown in FIG. 1D will be described with reference to FIG. As shown, it has a single structure.
In addition, the distance from the inner seal of the side seal parts 104a, 104b from the inner seal of the side seal parts 104a, 104b is, for example, 1.5 to 2.5 mm from the inner seal of the side seal parts 104a, 104b. Is preferred.
Next, as shown in FIG. 1G, the portion of the folded portion 112 obtained by one bending process shown in FIG. 1F is further bent with the second bending line 113 shown in FIG. 1F as an axis. The portion 112 'is formed in a double structure.
Further, as shown in FIG. 1H, the folded-back portion 112 ′ ′ is further folded by further bending with the second bending line 114 formed in the folded-back portion 112 by the one-time bending processing shown in FIG. 1F as an axis. It is formed in a triple structure.

  Further, the ink storage pack 100 has an ink discharge port formed above the storage unit 10, but the shape and location of the discharge port depend on the properties of the ink to be stored, the size of the storage section 10, etc. A conventionally known shape etc. can be adopted according to the application of the above.

Furthermore, in the ink container pack 100, from the viewpoint of improving the self-supporting property, it is desirable that the folded portion be joined and fixed to the side film at least at the portion where the bottom film is located. It is desirable that the entire direction, or the portion where the bottom film is located, and the upper end of the folded portion be fixedly joined to the side film.
Although the ink storage pack 100 has been described by exemplifying a standing pouch, it is also applicable to a flat pouch in which a resin film is sealed in three directions and four directions.

The ink storage pack 100 according to the present embodiment can use a resin film used in a conventionally known pouch, and is not limited thereto, but a single layer film made of a thermoplastic resin having heat sealability, or a film thereof A thermoplastic resin film having heat sealability is used as the inner layer of the pouch, and a laminated film having a layer structure of two or more layers in which other films are laminated can be used.
As a thermoplastic resin having heat sealability, for example, low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene-ethylene copolymer, ethylene-vinyl acetate copolymer, ethylene-based non-ethylene resin Examples thereof include olefin resins such as olefin resins grafted and modified with a saturated carboxylic acid or an anhydride thereof, ionomer resins, polyamide to copolyamide resins having a relatively low melting point to a low softening point, polyesters to copolyester resins, and the like.
As the laminated film, the film made of the heat sealable thermoplastic resin is used as the inner layer of the ink containing pack 100, and various thermoplastic resins, metal foils such as aluminum foil, paper, cellophane, etc. are used as the outer layer or intermediate layer. be able to. In addition, when providing gas barrier properties to the ink storage pack 100, a resin having a layer made of a gas barrier resin such as ethylene vinyl alcohol copolymer, nylon or cyclic olefin copolymer, or a metal oxide deposited film such as aluminum or silicon oxide A conventionally known laminated film containing a layer, a resin layer containing a clay mineral, and a metal foil such as aluminum can be used.

  As described above, according to this embodiment, the following effects can be obtained.

Since the folded portion 112 ′ ′ has a triple structure (multiple structure), the rigidity is enhanced, and the self-supporting property of the ink containing pack 100 can be enhanced.
Furthermore, the pouring posture to the cartridge 50 is stabilized, and the dripping of the ink can be suppressed.
In addition, crushing (choke) in the central portion of the ink storage pack 100 can be suppressed. Thus, the ink stored on the bottom side of the ink storage pack 100 can be efficiently discharged.

Second Embodiment
Next, a second embodiment will be described.
2A to 2D are schematic diagrams showing the configuration of the ink storage pack.

  As shown in FIG. 2A, the ink storage pack 200 includes a first filling portion 211 filled with ink and a second filling portion (shape retaining material filling portion) 212 filled with a shape-retaining substance. The first filled portion 211 is a portion obtained by filling the first unsealed portion described later with ink, and then sealing the first unsealed portion to seal the ink. The second filled portion 212 is a portion obtained by filling a shape retention material in a second unsealed portion described later, and then sealing the second unsealed portion to seal the shape retention material. It is.

The type and pressure of the shape-retaining substance filled in the second filling portion 212 are not particularly limited as long as the shape retention property of the ink storage pack 200 can be improved. For example, a gas such as air or nitrogen or a liquid such as water can be used as the material for shape retention. Further, in order to appropriately suppress the deformation of the second filling portion 212 and thereby make it easy to hold the ink storage pack 200, the shape-retaining material may be a gel-like material such as glycerin or ethylene glycol, or an elastic material such as rubber. You may use the body.
In the following description, an example in which a gas is used as a material for shape retention will be described.

  In the ink storage pack 200 shown in FIG. 2A, the self-supporting property and the shape retention property of the ink storage pack 200 are enhanced by providing the second filling portion 212. Such an effect brought about by the second filling unit 212 is particularly remarkable when the volume of the ink filled in the first filling unit 211 is large, for example, when the volume is in the range of 500 ml to 5000 ml. More preferably, when the volume of the ink filled in the first filling unit 211 is in the range of 900 ml to 3000 ml, the effect of improving the self-supporting property and the shape retention property based on the second filling unit 212 is particularly expected. Can.

The ink containing pack 200 is formed by sealing the front side film 201 and the back side film 202 using heat welding or the like. In this case, the above-described ink or gas is filled in the unsealed portion (unsealed portion) of the front side film 201 and the back side film 202 and sealed.
The type of the ink containing pack 200 is not particularly limited as long as the ink and the gas can be appropriately sealed. For example, the ink storage pack 200 may be configured as a so-called gusset bag in which a gusset is provided between the front side film 201 and the back side film 202. Such a gusset may be provided at the bottom of the ink containing pack 200 or at the side of the ink containing pack 200. For example, the bottom film 203 folded in half may be sandwiched between the front film 201 and the back film 202, and the bottom film of the ink storage pack 200 may be configured by the bottom film 203. The gusset type bag may be configured by folding and sealing one sheet of film.
Alternatively, the ink containing pack 200 may be configured as a three-sided sealed bag sealed along three edges, or as a four-sided sealed bag sealed along four edges. May be

  As shown in FIG. 2A, the filled ink storage pack 200 may be formed with an opening planned portion 218 for opening the ink storage pack 200. The opening scheduled portion 218 is configured, for example, as a perforation formed in the front side film 201 and the back side film 202. In this case, the discharge port S is formed by breaking the filled ink storage pack 200 along the opening scheduled portion 218, and the ink filled in the first filling portion 211 is discharged from the discharge port S. Can.

2B and 2C show the configuration of another ink containing pack 200a.
The ink storage pack 200a is different only in that a spout 245 including a discharge port S for discharging the ink filled in the first filling portion 211 is provided, and the other configuration is the ink described above. It is the same as the form of the containing pack 200, and the same parts as those of the form of the ink containing pack 200 are denoted with the same reference numerals and the detailed description will be omitted.

  As shown in FIGS. 2B and 2C, the spout 245 including the discharge port S is attached to the upper edge 214 of the ink containing pack 200a. The spout 245 has, for example, an opening and closing means (such as a cap 249). By providing such a spout 245, the flow rate at the time of pouring can be stabilized and resealed. The spout 245 is composed of members separate from the front side film 201 and the back side film 202, and is formed, for example, by injection molding of a thermoplastic resin.

  The specific configuration of the spout 245 is not particularly limited, and various configurations may be employed. For example, as shown in FIG. 2B, the spout 245 may include a hollow cylindrical portion 247, a flange portion 246 provided on the cylindrical portion 247, and an adhesive portion 248 provided on the cylindrical portion 247. Good. The cylindrical portion 247, the flange portion 246 and the bonding portion 248 may be integrally formed. In addition, a cap 249 for closing the opening at the upper end of the cylindrical portion 247 may be attached to the cylindrical portion 247. When such a spout 245 is used, for example, as shown in FIG. 2C, the spout 245 may be provided to the filled ink storage pack 200a by fixing the bonding portion 248 of the spout 245 by the first upper seal portion 227. it can.

FIG. 2D shows the configuration of another ink containing pack 200b.
The ink containing pack 200b is different only in that a spout 245 including the discharge port S is provided at a corner of the ink containing pack 200b, and the other configuration is the same as the form of the ink containing pack 200 described above. , And the same parts as those of the ink containing pack 200 are denoted by the same reference numerals and the detailed description thereof is omitted.

  As described above, according to this embodiment, the following effects can be obtained.

In the ink storage pack 200 (200a, 200b), a second filling portion (shape retaining material filling portion) 212 is formed. Thereby, the shape retention property of the ink containing pack 200 is enhanced, and the self-supporting property of the ink containing pack 200 can be enhanced. Furthermore, the pouring posture to the cartridge 50 is stabilized, and the dripping of the ink can be suppressed.
In addition, crushing (choke) at the central portion of the ink storage pack 200 can be suppressed. Thus, the ink stored on the bottom side of the ink storage pack 200 can be efficiently discharged.

Third Embodiment
Next, a third embodiment will be described.
3A to 3C are schematic views showing the configuration of the ink containing pack.

  As shown in FIGS. 3A and 3B, in the ink storage pack 300, the bottom member 303 folded in half is sandwiched between the lower end of the overlaid front film 301 and back film 302 with the folding portion facing up, and the peripheral portion is It is sealed.

  The bottom portion of the ink container pack 300 into which the bottom member 303 is inserted is sealed at the peripheral portion thereof to the bottom of the ship to form a bottom seal portion 304, which is a standing pouch type. In addition, the notch part 305 is provided in the both ends of the bottom member 303 folded in half, The front film 301 and the back film 302 are mutually sealed by this notch part 305, and the both ends of a bottom part are not opened. It has become.

  The bottom member 303 is made of a laminated film consisting of at least an outer surface side film 303a and an inner surface side film 303b, and an unlaminated portion is provided at a position to be the bottom of the ink containing pack 300. An independent filling chamber 306 separate from the content storage unit is provided. The independent filling chamber 306 of the present embodiment is provided on substantially the entire surface of the bottom member 303 excluding the peripheral seal.

  Although the independent filling chamber 306 is provided substantially on the entire surface of the bottom member 303 except for the peripheral seal, it may be provided on the portion other than the peripheral seal of the bottom member 303, not necessarily on the entire surface. For example, as in the bottom member 331 of FIG. 3C, even if a plurality of elongated bars and a bar in the orthogonal direction connecting them are combined in the extending direction of the bottom member 331 in the portion excluding the peripheral seal of the bottom member 331 good.

  Further, the bottom seal portion 304 is provided with a communication passage 307 in communication with the independent filling chamber 306, and a filling port 308 for connecting the communication passage 307 to the outside and filling the independent filling chamber 306 with a filler. There is. The communication path 307 is unstacked as in the independent filling chamber 306. In addition, the filling port 308 may be sealed by attaching a sealing label provided with an adhesive or a sealant layer after filling the independent filling chamber 306 with a filling material.

  In this manner, by filling and expanding the independent filling chamber 306 with the filling material, the half-folded bottom member 303 is opened to form the bottom of the ink containing pack 300 to ensure the self-supporting property. it can.

  A gas such as air or nitrogen gas can be used for the filling for expanding the independent filling chamber 306. Also, liquids such as water and oil can be used. Furthermore, solid particles such as inorganic powder and foamed resin can also be filled with these.

  In particular, when the independent filling chamber 306 is filled with a gas, the pressure generated by the impact in the case of liquid is directed to all directions as it is when the contents are impacted by a drop or the like. The filled gas can change its volume to relieve pressure. Therefore, the resistance to impact such as falling is improved.

  The side seal portion 309 of the seal of the peripheral portion is provided with a notch 310 for opening the ink storage pack 300. Although the notch 310 is provided in one side seal part 309 in this example, you may provide in the side seal part 309 on both right and left. In addition, half cut lines for opening may be provided from one side seal portion to both ends of the other side seal portion.

  The bottom seal 304 is also provided with a notch 311 for cutting and opening the independent filling chamber 306. Although a notch is provided in this example, another easy cutting mechanism such as a half cut line may be provided. Thereby, when discarding the used ink containing pack 300, the independent filling chamber can be crushed, and the volume can be reduced to discard the ink containing pack 300.

  The front film 301 and the back film 302 are composed of a laminated film of an outer substrate layer and an inner sealant layer. A barrier layer can also be provided between the substrate layer and the sealant layer. Other intermediate layers can also be provided.

  The bottom member 303 is composed of at least an outer surface side film 303 a and an inner surface side film 303 b, and the outer surface side film 303 a is composed of a base material layer. Moreover, a barrier layer can be provided in a base material layer. Other intermediate layers can also be provided.

  The inner film 303b may be a single sealant layer, but the second backing layer is preferably provided and laminated with the sealant layer because the sealant layer may be expanded when inflated. . Moreover, a barrier layer can be provided in a 2nd base material layer. Other intermediate layers can also be provided.

  As the base material layer, the second base material layer, and other intermediate layers, polyester such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP) ) Polyolefins such as polystyrene (PS), polyamide (PA) such as nylon-6, nylon-66, polycarbonate (PC), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride Stretched or unstretched films such as (PVDC), polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyether sulfone (PES), polymethyl methacrylate (PMMA) can be used.

  For the sealant layer, low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (LLDPE), polypropylene resin (PP), ethylene-propylene co Polymer (EP), ethylene-α-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methacrylic acid ester copolymer, ethylene-acrylic acid ester A copolymer, an ionomer resin, a resin such as ethylene-vinyl acetate copolymer (EVA), or a film obtained by forming a film of such a resin can be used.

  The barrier layer can be provided with a metal foil such as aluminum foil, a metal deposition layer such as aluminum, or an inorganic oxide deposition layer such as aluminum oxide, silicon oxide, tin oxide or magnesium oxide.

  The method for laminating these layers is not particularly limited. It can be laminated by usually used dry lamination or extrusion lamination (including sandwich lamination).

  In the lamination between the outer film 303a and the inner film 303b of the bottom member 303, an unlaminated portion is provided to provide the independent filling chamber 306 and the communication path 307, so the adhesive is patterned except for the unlaminated portion. It is easy and preferred to apply by and dry lamination.

  Also, the print layer can be provided on the front surface of the laminated film or between the layers. The printing method is also not particularly limited, and gravure printing, flexographic printing, silk printing, ink jet printing, or the like can be used.

  As described above, according to this embodiment, the following effects can be obtained.

  The ink containing pack 300 is provided with an independent filling chamber 306, and the self-standing property of the ink containing pack 300 can be enhanced by filling the independent filling chamber 306 with a filler such as air and expanding it.

Fourth Embodiment
Next, a fourth embodiment will be described.
4A to 4I are schematic views showing the configuration of the ink storage pack.

  As shown in FIGS. 4A to 4D, the pouch container 402 constituting the ink storage pack 400 has a biaxial structure in which a gas barrier sheet or the like is laminated on the outer surface of a synthetic resin film having thermal adhesiveness such as polyethylene or polypropylene. A container body 410 which can be folded into a flat state and which is formed into a bag shape by a flexible sheet having a thickness of about 80 to 200 μm laminated with a stretched polyamide film, a biaxially stretched polyester film, etc. The spout 420 includes a discharge port S formed of a heat adhesive resin.

  As shown in FIGS. 4E and 4F, the container main body 410 is folded inward from both side portions of the front and back pair of exterior sheets 411 and 411 and both exterior sheets 411 and 411 formed by the above-described flexible sheet, and left and right. The inner peripheral edge of the folded gusset sheets 412 and 412 is heat-sealed to the inner surface of the exterior sheets 411 and 411 and the exterior sheet 411. , 411 are heat-sealed with each other on the inner surface of the upper edge and the lower edge to form a bag. The hatched display portions in FIG. 4B to FIG. 4F indicate the heat seal portions of the container main body 410.

  Further, as shown in FIG. 4E, a notch 412a is formed at the upper corner on the joint edge side of the gusset sheet 412 in a half-folded state, and a pair of front and back exteriors is formed via the notch 412a. The sheets 411 and 411 are mutually point sealed (heat sealed). As described above, the notch 412a is formed in the gusset sheet 412 because the container body 410 is filled with the ink by fixing the both ends of the upper edge of the front and back pair of exterior sheets 411 and 411 to each other. In order to maintain the shape (see FIG. 4A).

  Further, as shown in FIG. 4E, in the side edge seal portion SS in which the side edges of the pair of exterior sheets 411 and 411 and the side edges of the gusset sheets 412 and 412 are heat-sealed, as shown in FIG. As shown, the upper end position (lower end position of the shoulder SP) of the body portion BP in a state of being filled with ink, that is, a recessed portion CP where the outer edge is recessed inward at a height position where the depth starts to narrow upward. Is formed. As shown in FIG. 4E, the side edge seal portion SS has a fixed width in which the upper edges of the exterior sheets 411 and 411 and the upper edge of the exterior sheet 411 and the upper edge of the gusset sheet 412 are heat sealed. Upper edge seal portion (including the mounting portion of the spout 420) of the lower edge portion of the outer covering sheet 411, 411 and the lower edge portion of the outer covering sheet 411 and the gusset sheet 412 from the height position of the inner edge (lower edge) of US. A seal portion in which the exterior sheet 411 and the gusset sheet 412 are heat-sealed in an area r between the lower edge and the height position of the inner edge (upper edge) of the lower edge seal DS having a fixed width heat sealed. The side edge seal portion SS also includes a large seal width portion and a lower sloped edge portion in which the inner edge partially protrudes inward.

  In addition, in order to facilitate bending of the side edge seal portion SS to the outer side in the depth direction of the side gusset portion, the outer sheet 411 and 411 along the inner edge of the straight portion in the side edge seal portion SS A creased line CL from the upper edge to the lower inclined edge is formed at a position slightly inward of SS, and in this creased line CL, the lower side of the recessed portion CP in the side edge seal portion SS is inward A fold is attached in advance by folding it back.

  The spout 420 is formed of a heat-adhesive resin such as polyethylene or polypropylene, and as shown in FIGS. 4E and 4F, the spout 420 is placed on the exterior sheets 411 and 411 in a state of being sandwiched by the upper end edges of the exterior sheets 411 and 411. A heat-sealed flat wedge-shaped mounting portion 422 and a main body 421 having a mouth projecting to the outside of the container main body 410 continuously provided to the mounting portion 422, and a screw for opening and closing the mouth in the main body 421 A cap 423 and an outlet pipe 424 provided at a lower part of the mounting portion 422 for sucking the ink filled in the container body 410 are provided.

  When the pouch container 402 configured as described above is filled with ink from the opening of the spout 420, the folded gusset sheets 412 and 412 spread to form the body portion BP, and the pair of exterior sheets 411, The lower part of 411 goes around the lower side of the body portion BP inside in the depth direction, and the overhanging direction of the portion below the depression portion CP in the side edge seal portion SS is the width direction of the body portion BP from the body portion The lower portion of the pair of left and right gusset sheets 412, 412, while changing in the depth direction of the BP, is the lower portion of the lower portion of the pair of exterior sheets 411, 411 that has turned around inward in the depth direction of the trunk portion BP. And the bottom edge seal portion DS is formed along the extension line of the inclined inner edge of the side edge seal portion SS of one of the exterior sheets 411 to form the bottom portion. It is, when closed by a screw cap 423 after completion ink filling mouth of the spout 420 (discharge port S), is completed ink storage pack 400 as shown in Figure 4A.

  As described above, in the ink storage pack 400, as shown in FIG. 4D, a pair of exteriors in which the lower portions of the pair of left and right gusset sheets 412 and 412 wrap around inside in the depth direction of the body portion BP of the pouch container 402. The lower side of the lower portions of the sheets 411 and 411 extends around the inside of the body portion BP of the pouch container 402 in the direction of the depth of the body portion BP of the pouch container 402, so that the body portion of the pouch container Since the lower portions of the pair of exterior sheets 411 and 411 that do not have a symmetrical shape in the depth direction (front-rear direction) of the cover contact the mounting surface, the conventional side gusset type pouch package is prone to tipping in the front-rear direction 4B and 4C, a pair of exterior sheets 411, 41 that do not have a symmetrical shape in the depth direction of the body portion BP of the pouch container 402. Under the lower part of the lower part of the gusset sheet 412, the lower part of the pair of gusset sheets 412, 412 will function as a support leg of symmetrical shape in the width direction (left and right direction) of the body portion BP of the pouch container 402 , It is hard to tip over in the left and right direction, and self-supporting stability is good.

  In particular, at the lower part of the pair of left and right gusset sheets 412 and 412 functioning as symmetrical shaped support legs, the side edge seal portion SS heat-sealed to the side edge part of the exterior sheet 411 By extending outward in the depth direction (longitudinal direction), the width becomes wider in the front-rear direction, and the area of the bottom portion becomes larger than that of the conventional pouch package, so that the self-standing stability is further improved.

  Moreover, in the side gusset type pouch container, since printing is usually performed on the lower part of the exterior sheet forming the bottom surface, in the conventional pouch packaging in which the lower part of the pair of exterior sheets is in contact with the mounting surface There is also a problem that the portion rubs off and printing is likely to disappear, but in this ink storage pack 400, the lower part of the gusset sheet 412 not printed is in contact with the mounting surface, and the lower part of the exterior sheet 411 is located above As a result, the print portion applied to the lower portion of the exterior sheet 411 is less likely to contact the placement surface, and the print is less likely to disappear.

  In the pouch container 402, the side edge seal portion SS in which the side edge portions of the pair of exterior sheets 411 and 411 and the side edge portion of the gusset sheet 412 are heat sealed has a recessed portion CP, and the recessed portion CP is Since it is arranged in a portion to be the body portion BP in a state of being filled with ink, the side edge seal on the lower side thereof is triggered by the depression portion CP as the body portion BP is formed by filling the ink. The extension direction of the portion SS is easily changed from the width direction (left and right direction) of the body portion BP to the depth direction (front and back direction) of the body portion BP, and the above-described ink containing pack 400 can be easily manufactured.

  In particular, in the pouch container 402, since the depression portion CP is disposed at the upper end portion of the trunk portion BP (a height position where the depth starts to narrow upward) in a state of being filled with the ink, Since the side edge seal portion SS located in the holding portion overhangs in the depth direction (longitudinal direction) of the trunk portion BP, when the pouch container is held by hand, the edge portion of the side edge seal portion SS is flat It has the effect of being hard to touch and having a good touch.

  Further, in the ink storage pack 400, as shown in FIG. 4C, the body portion BP in a state in which the portion on the side gusset portion of the pouch container 402 below the depressed portion CP is substantially flat including the side edge seal portion SS. Unlike the conventional pouch packaging in which the side edge seal portion protrudes outward in the width direction of the body, the side gusset portion can be used as a display area, and the display variation is different. It also has the effect of spreading.

  In the embodiment described above, the creased line CL is formed only on the exterior sheet 411. However, the present invention is not limited to this, and the same creased line is also formed at the corresponding position of the gusset sheet 412. It is also good.

  Further, in the embodiment described above, the creased line CL extends from the upper edge to the lower inclined edge of the container body 410, but the invention is not limited to this. The creased line is only in the region below the recess CP. May be formed. For example, as in the pouch container 402A shown in FIG. 4G, when the creases CL1 are formed along the inner edge of the inclined portion from the inner edge of the straight portion below the depressed portion CP in the side edge seal portion SS Since the lower part of the gusset sheet 412 which forms the bottom face part is easy to wrap around inside in the width direction of the body part BP, it can be said that it is a more preferable form. When forming the creased line CL1 in this manner, a protrusion for forming the creased line CL1 is provided on the seal bar, and when heat sealing the exterior sheet 411 and the gusset sheet 412, the creased line CL1 is simultaneously formed. It is conceivable to form

  Furthermore, as shown in the same figure, along the extended line of the inclined inner edge of the side edge seal portion SS, in the portion where the lower edges of the pair of exterior sheets 411 and 411 in the lower edge seal portion DS are heat sealed. When the fold creases CL2 are formed, the lower portion of the gusset sheet 412 wraps inward in the width direction of the body portion BP to form the bottom portion, the lower portion of the lower edge seal portion DS under the pair of exterior sheets 411 and 411 Both ends of the heat-sealed portion are reliably folded back at the formation position of the fold line CL2, and the lower portions of the pair of gusset sheets 412 and 412 functioning as symmetrical supporting legs tend to be flat. The effect of further improving the self-supporting stability is obtained. Further, it goes without saying that the fold creases CL2 formed in the lower edge seal portion DS may be provided in the pouch container 402 in which the fold creases CL extend from the upper edge to the lower inclined edge of the container body 410.

  Further, in the embodiment described above, the depressed portion CP of the side edge seal portion SS is formed at the upper end portion of the trunk portion BP (at the height position where the depth starts to decrease upward) in the state of being filled with the ink. However, the invention is not limited to this, and the depression portion CP may be provided at any position as long as it is from the upper end to the lower end of the body portion BP.

  In the embodiment described above, the pouch containers 402 are used in which both lower end portions in the width direction of the exterior sheet 411 and lower end portions in the depth direction of the gusset sheet 412 are inclined, but the invention is not limited thereto. As in the pouch container 402B shown in FIG. 4H, it is possible to use a pouch container 402B having corners at both lower ends in the width direction of the exterior sheet 411 and in lower ends in the depth direction of the gusset sheet 412. When the pouch container 402B is used, as in the case of the ink storage pack 400a shown in FIG. 4I, the contact area with the lower setting surface of the gusset sheet 412 is increased, so that there is an advantage that self-standing stability is improved.

  Moreover, in the embodiment mentioned above, although the pouch container 402 with which the container main body 410 was mounted | worn with the spout 420 which opens and closes an opening by the screw cap 423 as a pouring-out member is not limited to this It is also possible to replace with 420 and to adopt the form of a spout member, and it is also possible to use a pouch container to which the spout member such as the spout 420 is not attached.

  Further, in the pouch container 402 described above, the recessed portion CP and the creased line CL of the side edge seal portion SS are formed, and a portion on the lower side of the recessed portion CP in the side edge sealed portion SS in the folded line CL As a fold is attached in advance by folding back inside, when ink is filled from the opening of the spout 420 as in the conventional side gusset pouch, the side edge seal portion SS has a lower side than the depressed portion CP. The extension direction of the portion naturally changes from the width direction of the body portion BP to the depth direction of the body portion BP, but the portion on the lower side of the depression portion CP in the side edge seal portion SS is the body portion When ink is filled in a state where it is regulated to be directed to the outer side in the depth direction of BP, the portion on the side edge seal portion SS lower than the depressed portion CP is protruded in the depth direction of the body portion BP more reliably. It can be.

  Further, in the embodiment described above, both the recess CP and the creased line CL of the side edge seal SS are formed, but it is sufficient if at least the side edge seal SS has the recess CP, and the fold The ruled line CL can be omitted, and in that case, as described above, the side edge seal portion SS is regulated so that the portion below the depression portion CP is directed to the outside in the depth direction of the body portion BP. It is desirable to fill the ink in the closed state.

  Moreover, the exterior sheet 411 and the gusset sheet 412 which comprise the container main body 410 of pouch container 402, 402A, 402B mentioned above may each be formed of an individual flexible sheet, and are formed of one flexible sheet. You may

  As described above, according to this embodiment, the following effects can be obtained.

In the ink containing pack 400, since the lower part of the gusset sheets 412 and 412 wraps inward in the width direction of the body portion BP of the pouch container 402 below the lower part of the exterior sheets 411 and 411, it is difficult to fall over, Self-standing stability can be improved. Furthermore, the pouring posture to the cartridge 50 is stabilized, and the dripping of the ink can be suppressed.
Further, since the shape of the bottom of the ink containing pack 400 is maintained, the plural ink containing packs 400 can be placed in a space-saving manner.

Fifth Embodiment
Next, a fifth embodiment will be described.
5A to 5E are schematic diagrams showing the configuration of the ink storage pack.

  As shown in FIG. 5A, the ink containing pack 500 is folded inward from a pair of main surface members 502 consisting of a front surface member 502a and a back surface member 502b and both side edges of the main surface members 502 to form side gusset portions. And a pair of side surface members 503 which are combined with the right side surface member 503c and the left side surface member 503d.

  The main surface member 502 and the side surface member 503 are made of a flexible film or sheet, and a sealant layer is formed on at least one side. For example, it is a laminated film consisting of a polyethylene film of several μm to 25 μm, a nylon film of several μm to 30 μm, and a polyethylene film of several tens of μm to 200 μm from the outermost layer.

  The flexible film or sheet may further be provided with a metal foil or a vapor-deposited thin film of metal or inorganic oxide as a barrier layer. As metal foil, aluminum, copper, iron, stainless steel etc. can be used. Aluminum, chromium, zinc, gold, silver, platinum, nickel or the like can be used as the metal-deposited thin film layer. Silicon oxide (SiOx), alumina or the like can be used as the vapor-deposited thin film layer of the inorganic oxide.

  The configuration and thickness of the flexible film or sheet are not particularly limited, and a design having an oxygen barrier property, a water vapor barrier property, and the like can be appropriately made according to the properties of the contents.

  The main surface members 502 are superimposed such that the sealant layers of the front surface member 502a and the back surface member 502b face each other. The side member 503 is folded in two along the height direction by the fold line 530 so that the sealant surface faces the sealant surface of the main surface member 502, and from both side edges of the main surface member 502, the surface member 502a and the back surface member It is inserted between 502b. The two side edges of the main surface member 502 are heat-sealed with the peripheral edge of the side surface member 503, so that four side edge seal portions 504 are formed along the height direction.

  At the central portion of the lower edge portion of the main surface member 502, a bottom seal portion 505 is formed by heat sealing the lower edge portions of the surface member 502a and the back surface member 502b constituting the main surface member 502 with each other. Furthermore, on both sides in the longitudinal direction of the bottom seal portion 505, diagonal seal portions 506 which extend obliquely upward to the side edge seal portion 504 are formed. The oblique seal portion 506 is formed to heat seal the main surface member 502 and the side surface member 503.

  The oblique seal portion 506 is preferably formed to form an angle α of 30 to 50 degrees with respect to the bottom seal portion 505. In the range of 30 to 50 degrees, when the content (ink) is contained and dropped, it is possible to prevent the impact of the drop from concentrating on a specific part of the gusset bag, so it becomes difficult to tear the bag. The oblique seal portion 506 is not limited to a straight line, and may be in a curved shape or the like.

  The inner edge of the bottom seal portion 505 may be provided with a crease to suppress the repulsive force of the bottom seal portion 505. The creases can also be formed by thermoforming or simply by bending.

  A top seal portion 507 is formed on the upper edge portion of the main surface member 502 by heat sealing the upper edge portions of the surface member 502 a and the back surface member 502 b constituting the main surface member 502 to each other.

  Furthermore, on both sides in the longitudinal direction of the top seal portion 507, shoulder seal portions 508 which extend obliquely downward to the side edge seal portion 504 may be formed. Shoulder seal portion 508 is formed to heat seal main surface member 502 and side surface member 503. The shoulder seal portion 508 is not limited to a straight line, and may have a rounded shape.

  The ink containing pack 500 can be provided with a discharge port S. The discharge port S can use a pouring member 511 such as a plastic spout. The pouring member 511 is fixed by heat sealing the seal portion provided on the lower half with the main surface member 502. The lid 512 can be attached to the upper portion of the pouring member 511 by a screw.

  It is preferable from the viewpoint of self-supporting stability that the dispensing member 511 is provided at the longitudinal center of the top seal portion 507 which is the center of the ink storage pack 500 in the width direction. However, there is no particular limitation, and the shoulder seal portion 508, the side edge seal portion 504, the main surface member 502, and the side surface member 503 may be provided by fusion, adhesion, or other methods.

  The inner volume of the ink containing pack 500 is not particularly limited, but is suitable for relatively small volumes of 50 cc to 3000 cc, where it is difficult to suppress the repulsive force of the bottom seal by the weight of the gusset bag.

  As shown in FIG. 5C, a connecting portion 509 formed by connecting the side edge seal portion 504 of one main surface member 502 to the side edge seal portion 504 of the other main surface member 502 accommodates the ink in the ink containing pack 500. In this state, a pair is formed on the left and right of the ink containing pack 500 along the side surface.

  As shown in FIGS. 5A and 5B, in the state where the ink storage pack 500 is folded, the inner edge W of the side edge seal portion 504 to the inner end X of the inward side of the bent portion X0 formed in the connecting portion 509. The distance L1 in the width direction is shorter than the distance L2 in the height direction from the inner edge Y of the bottom seal portion 505 to the intersection point Z between the inner edge W of the side edge seal portion 504 and the inner edge V of the diagonal seal portion 506. It is done. As shown in FIG. 5D, when ink is stored in the ink storage pack 500 and made to stand on a horizontal surface, the bent portion formed in the connecting portion 509 so that the connecting portion 509 is in a stretched state without slack. The position of the inner end X on the inner side of X0 is designed.

  The connection portion 509 may be formed of the main surface member 502 and the side surface member 503, or the main surface member 502 or the side surface member 503, or another member may be attached. Other members include, but are not particularly limited to, flexible films and sheets, paper, metals, and the like, and they may be attached by fusion, adhesion, or other methods.

  As shown in FIG. 5E, when ink is stored in the ink storage pack 500 and the ink storage pack 500 is made to stand on a horizontal surface, connection is made even if the main surface member 502 is not expanded to the inner edge of the bottom seal portion 505. Since the surface member 502 a and the back surface member 502 b are mutually connected in the thickness direction of the ink storage pack 500 by the portion 509, the ink storage pack in the vicinity of the four corners of the bottom surface 513 compared to the width direction center vicinity of the ink storage pack 500. Bulge in the thickness direction of 500 can be suppressed. As a result, the center of the bottom ridgelines 514c and 514d of the side surface member 503 is pushed up slightly in the vicinity of the folding line 530, and all four corners of the bottom surface 513 of the ink containing pack 500 project downward. Here, the vicinity of the four corners of the bottom surface 513 means a region closer to four corners than one third of the total length in the width direction of the bottom surface 513 and closer to four corners than one third of the total length in the thickness direction of the bottom surface 513.

  Furthermore, when the ink storage pack 500 is made to stand on a horizontal surface by the connecting portion 509, the expansion in the thickness direction in the vicinity of the four corners of the bottom surface 513 of the ink storage pack 500 is suppressed, whereby the tension of the bottom surface 513 is relaxed and softened. Thus, the bottom seal portion 505 can easily bite upward (in the housing portion side) with respect to the bottom surface 513, and the downward protrusion near the bottom seal portion 505 can be reduced.

  The connection portion 509 is provided at a height of 50% or less with respect to the height from the bottom surface 513 to the outer edge of the top seal portion 507 in a state where the ink is stored in the ink storage pack 500 and is made to stand alone. . The main surface members are connected by the connecting portion 509, and the shape of the lower half of the ink containing pack 500 is stabilized, whereby the self-supporting property of the ink containing pack 500 is stabilized. Furthermore, it is preferable to be provided at a height of 25% or less with respect to the height from the bottom surface 513 to the outer edge of the top seal portion 507. It is because self-supporting stability improves more notably. Furthermore, it is more preferable to provide the lower edge of the connection portion 509 in contact with a horizontal surface in a self-supporting state. The four corners of the bottom surface 513 and the lower edge of the connection portion 509 are in contact with the horizontal surface, and the shape near the bottom ridge lines 514c and 514d is stabilized, thereby further improving self-supporting stability.

  Therefore, all four corners of the bottom surface 513 can be always kept in contact with the horizontal surface, so that stable self-sustaining ability can be obtained even if the repulsive force of the bottom seal portion 505 is strong.

  Also, although the case where the seal portion is formed by heat sealing has been described, it may be formed by an adhesive, an adhesive or other means.

  5F to 5I show the configuration of another ink containing pack 500a. In the following description, components different from those of the ink containing pack 500 will be described, and the same components will be denoted by the same reference numerals and descriptions thereof will be omitted.

  The connection portion 509 is a first connection member 509a extending from the front surface member 502a side, a second connection member 509b extending from the back surface member 502b side, and a connection between the first connection member 509a and the second connection member 509b near their tips. The inner end of the connecting portion 590 is an inner end X on the inner side of the bent portion X0 in a state where the ink storage pack 500a is folded. In the connecting portion 590, the inner surfaces of the first connecting member 509a and the second connecting member 509b are connected by joining together so that they overlap when the ink storage pack 500a is folded. The bonding method may be fusion, adhesion or other methods. However, it is preferable to bond by point seal because the bag making process is easy and inexpensive to manufacture. Further, the shape of the connecting portion 590 is not particularly limited, such as linear, round, semicircular, polygonal or the like, and the inner end thereof is X.

  As shown in FIG. 5F, when the ink storage pack 500a is folded, the distance L1 in the width direction from the inner edge W of the side edge seal portion 504 to the inner end X of the joint portion 590 is from the inner edge Y of the bottom seal portion 505. It is formed to be shorter than the distance L2 in the height direction to the intersection point Z between the inner edge W of the side edge seal portion 504 and the inner edge V of the oblique seal portion 506. As shown in FIG. 5I, when ink is stored in the ink storage pack 500a and made to stand on a horizontal surface, the first connecting member 509a and the second connecting member 509b of the connecting portion 509 are stretched without slack. The position of the inner end X of the coupling portion 590 is designed.

  Even when the main surface member 502 is not expanded to the inner edge of the bottom seal portion 505 when the ink is stored in the ink storage pack 500 and the ink storage pack 500 is made to stand on a horizontal surface, the connecting portion 509 And the back surface member 502b are mutually connected in the thickness direction of the ink storage pack 500, the expansion in the thickness direction of the ink storage pack 500 in the vicinity of the four corners of the bottom surface 513 It can be suppressed. As a result, the center of the bottom ridge lines 514c and 514d of the side surface member 503 is pushed up slightly in the vicinity of the folding line 530, and all four corners of the bottom surface 513 of the ink containing pack 500a project downward.

  5J and 5K show the configuration of another ink containing pack 500b. In the following description, components different from those of the ink containing pack 500 will be described, and the same components will be denoted by the same reference numerals and descriptions thereof will be omitted.

  As shown in FIGS. 5J and 5K, the intersection of the inner edge W of the side edge seal portion 504 of the ink containing pack 500b and the inner edge V of the diagonal seal portion 506 is formed in a rounded shape. The intersection of the tangent m1 at the start of the rounded shape at the inner edge of the side edge seal portion 504 and the tangent m2 at the start of the rounded shape at the inner edge of the diagonal seal portion 506 is the inner edge W of the side edge seal portion 504 and the diagonal seal The point of intersection Z with the inner edge of the part.

  The ink containing pack 500, 500a, 500b has been described as being constituted by four separate members including the main surface member 502 and the side surface member 503 in combination. However, the present invention is not limited to the embodiment, and may be constituted by one, two, three, five or more members.

  As described above, according to this embodiment, the following effects can be obtained.

In the ink containing pack 500 (500 a, 500 b), the self-standing stability can be improved by the formation of the connecting portion 509. Furthermore, the pouring posture to the cartridge 50 is stabilized, and the dripping of the ink can be suppressed.
In addition, since the shape of the bottom of the ink containing pack 500 (500a, 500b) is maintained, the plural ink containing packs 500 (500a, 500b) can be placed in a space-saving manner.

Sixth Embodiment
Next, a sixth embodiment will be described.
6A to 6E are schematic views showing the configuration of the ink storage pack.

  As shown in FIG. 6A, the ink containing pack 600 is folded inward from a pair of main surface members 602 consisting of the front surface member 602a and the back surface member 602b and both side edges of the main surface members 602 to form side gusset parts. And a pair of side surface members 603 which are combined with the right side surface member 603c and the left side surface member 603d.

  The main surface member 602 and the side surface member 603 are made of a flexible film or sheet, and a sealant layer is formed on at least one side. For example, it is a laminated film consisting of a polyethylene film of several μm to 25 μm, a nylon film of several μm to 30 μm, and a polyethylene film of several tens of μm to 200 μm from the outermost layer.

  The flexible film or sheet may further be provided with a metal foil or a vapor-deposited thin film of metal or inorganic oxide as a barrier layer. As metal foil, aluminum, copper, iron, stainless steel etc. can be used. Aluminum, chromium, zinc, gold, silver, platinum, nickel or the like can be used as the metal-deposited thin film layer. Silicon oxide (SiOx), alumina or the like can be used as the vapor-deposited thin film layer of the inorganic oxide.

  The configuration and thickness of the flexible film or sheet are not particularly limited, and a design having an oxygen barrier property, a water vapor barrier property, and the like can be appropriately made according to the properties of the content (ink).

  The main surface members 602 are superimposed such that the sealant layers of the front surface member 602a and the back surface member 602b face each other. The side member 603 is folded in two along the height direction so that the sealant surface faces the sealant surface of the main surface member 602, and between the surface member 602a and the back surface member 602b from both side edges of the main surface member 602. It is inserted. The side edge seal portions 604 are formed in four places in the height direction by heat sealing both side edges of the main surface member 602 with the peripheral edge of the side surface member 603.

  At the central portion of the lower edge portion of the main surface member 602, a bottom seal portion 605 is formed by heat sealing the lower edge portions of the surface member 602a and the back surface member 602b constituting the main surface member 602 with each other. Further, on both sides in the longitudinal direction of the bottom seal portion 605, diagonal seal portions 606 extending obliquely upward to the side edge seal portion 604 are formed. The oblique seal portion 606 is formed to heat seal the main surface member 602 and the side surface member 603.

  The oblique seal portion 606 is preferably formed to form an angle α of 30 to 50 degrees with respect to the bottom seal portion 605. In the range of 30 to 50 degrees, when the ink is contained and dropped, the impact due to the drop can be prevented from concentrating on a specific part of the gusset bag, so it becomes difficult to break the bag and the safety is excellent. The oblique seal portion 606 is not limited to a straight line, and may be curved or the like.

  The inner edge of the bottom seal portion 605 may be provided with a crease to suppress the repulsive force of the bottom seal portion 605. The creases can also be formed by thermoforming or simply by bending.

  A top seal portion 607 is formed on the upper edge portion of the main surface member 602 by heat sealing the upper edge portions of the surface member 602 a and the back surface member 602 b constituting the main surface member 602 to each other.

  Furthermore, on both sides in the longitudinal direction of the top seal portion 607, shoulder seal portions 608 extending obliquely downward to the side edge seal portion 604 can be formed. Shoulder seal portion 608 is formed to heat seal main surface member 602 and side surface member 603. The shoulder seal portion 608 is not limited to a straight line, and may have a rounded shape.

  The ink containing pack 600 can be provided with a discharge port S. The discharge port S can use a pouring member 611 such as a plastic spout. The pouring member 611 is fixed by heat sealing the seal portion provided on the lower half with the main surface member 602. A lid 612 can be attached to the top of the pouring member 611 by a screw.

  It is preferable from the viewpoint of self-supporting stability that the dispensing member 611 is provided at the center in the longitudinal direction of the top seal portion 607 which is the center in the width direction of the ink storage pack 600. However, it is not particularly limited, and it may be provided on the shoulder seal portion 608, the side edge seal portion 604, the main surface member 602, and the side surface member 603 by fusion, adhesion, or other methods.

  The internal capacity of the ink containing pack 600 is not particularly limited, but it is difficult to suppress the repulsive force of the bottom seal portion 605 by the weight of the ink containing pack 600, which is suitable for 50cc to 3000cc with relatively small capacity. There is.

  In the vicinity of the four corners of the bottom surface 613 of the ink containing pack 600, as shown in FIG. 6C, connecting parts 609 connecting the front surface member 602a and the back surface member 602b of the main surface member 602 in the thickness direction of the ink containing pack 600 A pair is formed. Here, the vicinity of the four corners of the bottom surface 613 means a region closer to four corners than one third of the total length in the width direction of the bottom surface 613 and closer to four corners than one third of the total length in the thickness direction of the bottom surface 613. The connection portion 609 is formed along the diagonal seal portion 606 and the bottom surface 613 in a state where the ink is stored in the ink storage pack 600.

  As shown in FIGS. 6A and 6B, the upper end X on the inward side of the bent portion X0 formed in the connecting portion 609 is the inner edge Y of the bottom sealing portion 605 in the state where the side member 603 of the ink containing pack 600 is folded. It is formed to be located above the upper side. As shown in FIG. 6D, when the ink is stored in the ink storage pack 600 and is allowed to stand on a horizontal surface, the upper end on the inner side of the bent portion X0 is in a stretched state without slack in the connecting portion 609. The position of X is designed.

  The connection portion 609 may be formed of the main surface member 602 and the side surface member 603, or the main surface member 602 or the side surface member 603, or another member may be attached near four corners of the bottom surface 613. Other members include, but are not particularly limited to, flexible films and sheets, paper, metals, and the like, and they may be attached by fusion, adhesion, or other methods.

  Further, as shown in FIG. 6A, a notch 610 is formed upward from the lower edge between the bottom seal portion 605 of the main surface member 602 and the connecting portions 609 on both sides in the width direction of the ink containing pack 600. . The notch portion 610 can be formed by the outer edge of the oblique seal portion 606 and the inner edge of the connecting portion 609, or may be a score line from the lower edge portion to the upper side, and is not particularly limited.

  When the ink storage pack 600 is folded, the upper end 610a of the notch 610 is formed to be equal to or above the upper end X on the inward side of the bent portion X0. By this, even when the main surface member 602 does not expand to the inner edge of the bottom seal portion 605, the connecting portion 609 is not affected by the expansion condition of the main surface member 602, and the effect can be exhibited.

  As shown in FIG. 6E, when the ink is contained in the ink containing pack 600 and the ink containing pack 600 is made to stand on a horizontal surface, even if the main surface member 602 does not expand to the inner edge of the bottom seal portion 605, Since the front surface member 602a and the back surface member 602b are mutually connected in the thickness direction of the ink storage pack 600 by the connection portions 609 in the vicinity of the four corners of the bottom surface 613, swelling in the thickness direction of the gusset bag in the vicinity of the four corners of the bottom surface 613 is suppressed. Ru. As a result, the vicinity of the center fold line 630 of the bottom ridgelines 614 c and 614 d of the side surface member 603 is pushed up slightly, and all four corners are projected downward.

  Furthermore, when the ink storage pack 600 is made to stand on a horizontal surface by the connecting portion 609, the expansion in the thickness direction in the vicinity of the four corners of the bottom surface 613 of the ink storage pack 600 is suppressed, whereby the tension of the bottom surface 613 is relaxed and softened. Thus, the bottom seal portion 605 can easily bite in the upper direction (the housing portion side) with respect to the bottom surface 613, and the downward protrusion near the bottom seal portion 605 can be reduced.

  Therefore, the vicinity of all the four corners of the bottom surface 613 can always be kept in contact with the horizontal surface, so that stable self-sustainability can be obtained even if the repulsive force of the bottom seal portion 605 is strong.

  Also, although the case where the seal portion is formed by heat sealing has been described, it may be formed by an adhesive, an adhesive or other means.

  6F to 6I show the configuration of another ink containing pack 600a. In the following description, components different from those of the ink containing pack 600 will be described, and the same components will be denoted by the same reference numerals and descriptions thereof will be omitted.

  The connection portion 609 is composed of the main surface member 602 and the side surface member 603 or the main surface member 602 or the side surface member 603, and is formed outward from the outer edge of the oblique seal portion 606. The connecting portion 609 is formed by connecting the first connecting member 609a extending from the front surface member 602a, the second connecting member 609b extending from the back surface member 602b, and the first connecting member 609a and the second connecting member 609b near their tips. The upper end of the connecting portion 690 is the upper end X on the inward side of the bent portion X0 when the ink storage pack 600a is folded. In the connecting portion 690, the inner surfaces of the first connecting member 609a and the second connecting member 609b are connected by joining together so that they overlap when the ink storage pack 600a is folded. The bonding method may be fusion, adhesion or other methods. It is not particularly limited. However, it is preferable to bond by point seal because the bag making process is easy and inexpensive to manufacture. Further, the shape of the connecting portion 690 is not particularly limited, such as a linear shape, a round shape, a semicircular shape, or a polygonal shape, and the upper end thereof is X. The connecting portion 609 may be attached to another member by fusion bonding, adhesion, or other method.

  The connection portion 609 is preferably formed on a downward extension of the four side edge seal portions 604. That is, the connection portion 609 is preferably formed by extending the side edge seal portion 604 below the diagonal seal portion 606. This is because the design of the gusset bag and the bag making process are easy.

  As shown in FIG. 6F, the upper end X of the connection portion 690 of the connection portion 609 is formed above the inner edge Y of the bottom seal portion 605 when the ink storage pack 600a is folded. As shown in FIG. 6I, when ink is stored in the ink storage pack 600a and is allowed to stand on a horizontal surface, the first connection member 609a and the second connection member 609b of the connection portion 609 are stretched without slack. The position of the upper end X of the coupling portion 690 is designed.

  As shown in FIG. 6H, the connecting portion 609 is formed in a substantially T shape when viewed from the side by stretching the first connecting member 609a and the second connecting member 609b in the thickness direction of the ink storage pack 600a. . Also, when the ink storage pack 600a is allowed to stand, as shown in FIG. 6I, the connecting portion 690 slightly pushes up the vicinity of the center fold line 630 of the bottom ridgelines 614c and 614d of the side surface member 603. The vicinity of all four corners of the bottom surface 613 of the ink containing pack 600a is more likely to protrude downward.

  In addition, the ink containing pack 600, 600a demonstrated the thing comprised by the main body member 602 and the side member 603, and being comprised of four separate members. However, the present invention is not limited to the embodiment, and may be constituted by one, two, three, five or more members.

  In the above embodiment, although the connection portion 609 is formed on the downward extension of the four side edge seal portions 604, the connection portion 609 is not limited to this. As in the case of the ink containing pack 600 b shown in FIG. 6J, the connecting part 609 may be provided downward from near the longitudinal middle of the diagonal seal part 606.

  Furthermore, as in the case of the ink storage pack 600c shown in FIG. 6K, the connecting portion 609 is provided wider than the side edge seal portion 604 by narrowing the width of the notch portion 610. Good.

  As described above, according to this embodiment, the following effects can be obtained.

In the ink storage pack 600 (600a, 600b, 600c), the self-standing stability can be improved by the formation of the connecting portion 609. Furthermore, the pouring posture to the cartridge 50 is stabilized, and the dripping of the ink can be suppressed.
Further, since the shape of the bottom of the ink containing pack 600 (600a, 600b, 600c) is maintained, the plural ink containing packs 600 (600a, 600b, 600c) can be placed in a space-saving manner.

Seventh Embodiment
Next, a seventh embodiment will be described.
7A to 7D are schematic diagrams showing the configuration of the ink storage pack.

  As shown in FIG. 7A, the ink storage pack 700 is a pair of vertically long, substantially rectangular trunk-formed front and back sheets 720 and 721 that are vertically folded inward from the longitudinally-folded line 710. The self-standing package is formed by sealing the left and right sides and the upper and lower sides of the substantially rectangular left and right side gussets 722 and 723 with a predetermined width to form a vertical seal portion 730 and an upper and lower seal portion.

  For example, as shown in FIG. 7C, first, the ink containing pack 700 has a narrow, height-long, substantially rectangular trunk-forming surface sheet 720 and a trunk of the same shape as the trunk-forming surface sheet 720. Between the formed back sheet 721, a vertically elongated, substantially rectangular left gusset 722 having a narrow width and a height, which is folded inward from the longitudinal fold 710, and a right gusset 723 identical to the left gusset 722 are overlapped. .

  7C, the right side 720a of the body forming surface sheet 720 viewed from the front and the left side 723a of the right gusset 723 viewed from the right side are aligned, and the body forming back sheet 721 viewed from the back side. The left side 721 b and the right side 723 b of the right side gazette 723 viewed from the right side are put together. The left side 720b of the body forming surface sheet 720 seen from the front and the right side 722a of the left gusset 722 seen from the left side are aligned, and the right side 721a of the body forming back sheet 721 seen from the back and the left gusset 722 seen from the left side And the lower sides 720c and 721c of the two body forming front and back sheets 720 and 721 and the lower sides 722c and 723c of the two left and right side gussets 722 and 723 coincide with each other. .

  Subsequently, as shown in FIG. 7D, for example, as shown in FIG. 7D, the body forming surface sheet 720 and the left side gusset 722, the right side gusset 723, the opposing sides 720a of the body forming back sheet 721, An ink storage pack 700 is formed by forming a vertical seal portion 730 and a lower side seal portion 732 by sealing the members 720b, 720c, 721a, 721b, 722c, 722b, 722c, 723a, 723b, 723c with a predetermined width (W). It is formed.

  As shown in FIG. 7D, the lower side 720c of the body forming surface sheet 720 and the lower side 721c of the body forming back sheet 721 have a flat top (A) at the center, and from both ends of the flat top (A) A mountain shape having a ridge line (B) extending obliquely downward is formed.

  Furthermore, the ink storage pack 700 is obliquely inclined upward toward the left and right sides 720b, 721b, 720a, 721a of the body-formed front and back sheets 720, 721 from near both insides of both ends of the flat top (A) forming the chevron. The folding ruled line 712 is extended.

  Thus, the lower side 720c of the body forming surface sheet 720 and the lower side 721c of the body forming back sheet 721 have a mountain shape having a flat top (A) and ridges (B) extending obliquely downward from the both ends at the center. It is formed, and furthermore, the bending ruled line 712 which extends diagonally upward from the both ends of this flat top (A) to the right and left sides 720b, 720a, 721b, 721a of the body forming front and back sheets 720, 721 is provided Thus, for example, as shown in FIG. 7A, when the ink containing pack 700 is filled with the ink and the bag is expanded, for example, as shown in the bottom view of FIG. Bent creased lines 712 extending obliquely upward from lower sides 720c and 721c toward left and right sides (not shown), the lower sides below lower sides 720c and 721c. Since the seal portion 732 is bent to the outside of the body-formed front and back sheets 720 and 721, as shown in FIG. 7A, the ink storage pack 700 can have a stable sitting position and stable self-sustaining ability. Can.

  Also, for example, as shown in FIG. 7A, the vertical seal portion 730 having a predetermined width along the left and right sides of the body forming surface sheet 720, the body forming back sheet 721, and the left and right side gussets 722, 723 Since the bag itself becomes convex, it is possible to make the ink storage pack 700 that is more stable in itself and that it is possible to have a stable self-supporting property even with a narrow one having a narrow height and a high height.

  FIG. 7E shows the configuration of another ink containing pack 700a. As shown in FIG. 7E, bottom portions of lower sides 720c and 721c formed of ridges (B) forming the mountain shape of the body forming surface sheet 720 and the body formed back sheet 721 are lower sides 720c formed of the ridges (B). , 721 c to the fold ruled line 712 to form wide lower side seal portions 733 at the four corners of the bottom.

  In this manner, the lower side seal portion of the bottom portion is sealed from the lower sides 720c and 721c consisting of ridge lines (B) forming a chevron to the fold ruled line 712 to make four corners of the bottom portion a wide lower side seal portion 733. Since the contents (ink) do not enter from the ruled line 712 to the lower part thereof, the lower sides 720c and 721c of the body-formed front and back sheets 720 and 721 are more easily bent from the bent ruled line 712, and as a result It can be made more stable.

  As a packaging material used for the ink containing pack 700, 700a, at least the innermost layer may be a sealant layer having a heat sealability, and thus may be a single layer film made of a thermoplastic resin having a heat sealability. A thermoplastic resin film having properties is used as the inner layer of the bag, and a laminated film having a layer structure of two or more layers in which other films are laminated can be used. Examples of the thermoplastic resin film having the heat sealability include polypropylene (PP), propylene-ethylene copolymer, crystalline polybutene-1, crystalline poly 4-methylpentene-1, low density polyethylene (LDPE), Medium density polyethylene, high density polyethylene (HDPE), linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ionic crosslinked olefin copolymer Polyolefins such as coalesced (ionomers); aromatic vinyl copolymers such as polystyrene and styrene-butadiene copolymer; halogenated vinyl polymers such as polyvinyl chloride and vinylidene chloride resin; acrylonitrile-styrene copolymer, acrylonitrile- Styrene-Butadiene Coweight Nitrile polymers such as: nylon 6 (Ny 6), nylon 66, polyamides such as para or metaxylylene adipamide; polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytetramethylene terephthalate, poly-1 Examples thereof include thermoplastic resins such as polyesters such as 4-cyclohexanedimethylene terephthalate and polyethylene naphthalate; various polycarbonates; and polyacetals such as polyoxymethylene.

  Particularly preferable materials as the thermoplastic resin include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), polypropylene (PP), and propylene-ethylene copolymer. Polymer, ethylene-vinyl acetate copolymer, olefin resin such as olefin resin graft modified with ethylenic unsaturated carboxylic acid or its anhydride, ionomer resin, relatively low melting polyamide resin, polyester resin, etc. Be done.

  When a laminated film is used as the plastic film constituting the ink storage pack 700, 700a, the thermoplastic resin film having the above heat sealability is used as the inner layer of the bag, and if necessary, through the adhesive layer, The laminated film which laminated the film of 4 is used. As the material for forming the adhesive layer, adhesiveness selected from polyethylene imine resin, alkyl titanate resin, polyester-isocyanate resin, urethane resin, epoxy resin, polyether resin, olefin resin introduced with polar group, etc. Resin can be used.

  There is no restriction | limiting in particular as a film laminated | stacked with heat sealable resin, What is normally used for bags, such as a pouch, can use all. As a material suitable for such a film, any of the materials used as the heat sealable resin described above can be used, and a material of the same or different type as the resin to be the inner layer is appropriately selected. Moreover, what laminated | stacked 1 type (s) or 2 or more types of said plastic film with metal foil, such as aluminum, paper, cellophane etc. as said other film can also be used. In particular, in the case of contents requiring gas barrier properties, resin layers such as polyvinylidene chloride resin, saponified EVA, nylon or cyclic olefin copolymer may be mentioned.

  Also, in recent years, a barrier made of a laminated film of metal oxide such as aluminum oxide or silicon oxide on a polyethylene terephthalate film, which is transparent in recent years and in consideration of environmental problems (by using polyvinylidene chloride resin, EVA saponified or aluminum foil). Films are preferably used. Furthermore, in order to impart thermal insulation and rigidity to the film constituting the bag, a film made of a foam of various synthetic resins can also be used, and inorganic substances such as titanium oxide, calcium carbonate, carbon, talc, etc. It is also possible to use films made of various synthetic resins obtained by kneading fibers and the like.

  Also, as the creased ruled line 712 applied to the body forming front and back sheets 720 and 721 formed of the laminated film, for example, even when the inner side (the sealant layer side) of the body forming front and back sheets 720 and 721 is subjected to scoring. Alternatively, a ridge may be formed so as to protrude on the outer surface side of the body-formed front and back sheets 720 and 721, and the inner side (the sealant layer side) may be sealed.

  Further, as shown in FIG. 7A, a spouted ink storage pack 700 is formed by sandwiching and sealing a spout 706 including a discharge port S between upper end center edges of the body forming surface sheet 720 and the body forming back sheet 721. The ink can be poured from the spout 706 at the top while holding and pressing the body portion of the ink containing pack 700, 700a with a finger or the like.

  FIG. 7F shows the configuration of another ink containing pack 700b. As shown in FIG. 7F, an inclined seal portion 734 inclined inward above the vertical seal portion 730 is formed, the upper end protrudes upward, and both sides and the upper side are sealed to form a discharge port S. It can also be done.

  As described above, according to this embodiment, the following effects can be obtained.

In the ink containing pack 700 (700a, 700b), the lower side 720c, 721c of the body forming front and back sheets 720, 721 has a mountain with a flat top (A) at the center and a ridgeline (B) extending obliquely downward from the end. The self-standing stability can be improved by providing the bent ruled lines 712 which extend obliquely upward from the inner sides of both ends of the flat top portion (A) to the left and right sides.
Further, since the shape of the bottom of the ink containing pack 700 (700a, 700b) is maintained, the plural ink containing packs 700 (700a, 700b) can be placed in a space-saving manner.

Eighth Embodiment
An eighth embodiment will now be described.
8A to 8E are schematic views showing the configuration of the ink storage pack. In addition, in order to show the area | region of a seal | sticker part clearly in the drawing, the cross parallel hatching (cross hatching) may be used.

  As shown in FIG. 8A, the ink storage pack 800 according to the present embodiment is a columnar reinforcing member 811 formed by injection molding of a bag main body 801 and a resin and joined only to the side seal parts 804 and 804 of the bag main body 801. , 811. The ink storage pack 800 can be manufactured, for example, by inserting the bag main body 801 into a mold and simultaneously performing the formation of the columnar reinforcing member 811 and the bonding to the bag main body 801 by injection molding of resin. It is.

  Here, as shown in FIG. 8C, the bag body 801 is composed of a pair of side films 802, 802 and a bottom film 803 sandwiched by the lower portions of the side films 802, 802. Also, the bottom film 803 is folded in two along the folding line 803a, and the lower side 801a of the bag body 801 and the folding line 803a in FIG. 8C so that the folding line 803a faces inward (upward in FIG. 8C). It is piled up in between.

  The two side films 802, 802 have the same shape, and in order to bond the two, side seal portions 804, 804 are formed on both the left and right sides by fusion. Further, in order to join the side films 802 and 802 and the bottom film 803, a bottom seal portion 806 is formed on the lower portion of the bag body 801 by fusion. The bottom seal portion 806 is formed in a substantially arc shape in which the seal width in the vertical direction becomes larger toward the left and right side seal portions 804, 804, and it becomes possible to greatly widen the bottom in the width direction central portion of the bag ing. An opening 808 is formed in the upper portion of the bag body 801 by unfusing the side films 802 and 802 along the upper side 801 b of the bag body 801.

Films used as the side film 802 and the bottom film 803 are substrates such as a plastic film having heat fusion bonding on at least one side, and a laminate film formed by laminating these plastic films with aluminum foil, paper, etc. It can be used. The bottom film 803 may be the same type of substrate as the side film 802 or may be a different substrate.
As the substrate, a single-layer plastic film having heat fusion property, a coextruded multilayer film provided with a resin layer having heat fusion property on the outer layer, a metal layer such as a resin layer having heat fusion property and aluminum foil And laminated films obtained by laminating paper and various plastic films.
The resin layer and the plastic film are not particularly limited, but polyolefin resins such as polyethylene and polypropylene are suitably used as the material having heat fusion property and being able to be a sealant layer. Examples of the resin for reinforcing the strength of the film include polyamide resins such as nylon, polyester resins such as polyethylene terephthalate, and the above-mentioned polyolefin resins. The reinforcing resin layer is preferably a film stretched uniaxially or biaxially because of its excellent strength and dimensional stability.

  Both of the films used as the side film 802 and the bottom film 803 may be a single-layer plastic film, but it is preferable that a reinforcing resin layer be laminated. In particular, when the side film 802 is a laminated film provided with a heat-fusible resin layer on both sides, it can be used as a sealant layer on one side and can be heat-fused firmly with the reinforcing member 811 on the opposite side (outside surface) So preferred. The bottom film 803 is provided with a sealant layer made of a thermoplastic resin having heat fusion property on one side which becomes the outer surface when folded at the folding line 803a, and the opposite surface of the sealant layer Under the conditions to be worn, those composed of a stretched film or the like which does not show heat fusion property are preferable for the bag making operation.

The base material may be provided with a gas barrier layer in order to impart a function of blocking a gas such as oxygen or water vapor as required. The gas barrier layer can be formed by coextrusion of an ethylene-vinyl alcohol copolymer (EVOH) layer or a polyvinylidene chloride resin layer, coating or lamination, or vapor deposition of metal or ceramic.
Although the thickness of the substrate is not particularly limited, it is preferably, for example, 20 to 900 μm. Although thicker substrates are suitable in terms of shape retention and self-supporting properties of the bag body, thin substrates are preferred in terms of flexibility, lightness and resource saving. In particular, in the present invention, by providing the reinforcing members 811 on both sides of the pouch, it is possible to secure shape retention and self-supporting properties even with thin substrates. The particularly desirable thickness from the formability and the handleability is preferably in the range of 100 to 200 μm.

  As shown in FIGS. 8A and 8B, the reinforcing member 811 is formed in a shape along the side seal portion 804 of the bag main body 801, and is joined so as to cover at least the end face 804a of the side seal portion 804 by injection molding. ing. The resin constituting the reinforcing member 811 may be formed by injection molding. The reinforcing member 811 and the bag main body 801 are joined, for example, by forming the reinforcing member 811 in a U-shaped cross section so as to sandwich the side seal portion 804 from both sides, and the groove having a U-shaped cross section It may be bonded. Preferably, a resin capable of fusing with at least one resin layer (for example, a sealant layer or a resin layer on the outer surface) constituting the side film 802 is used as a resin constituting the reinforcing member 811, and melting for injection during injection molding. Preferably, the resin layer of the side film 802 is melted by the heat of the resin, and the reinforcing member 811 is fused to the end surface 804 a and / or the outer surface of the side seal portion 804.

  Specifically, when the reinforcing member 811 is fused to the end face 804a of the side seal portion 804, for example, the reinforcing member 811 is formed of a resin capable of fusing with the sealant layer of the side film, and the reinforcing member 811 is formed of the sealant layer. It can be fused with the end face. When the reinforcing member 811 is fused to the resin layer on the outer surface of the side film, the outer surface of the side film 802 is made of a resin layer capable of fusing, and the reinforcing member 811 is fused to the outer surface of the side film 802 The reinforcing member 811 can be fused with the outer surface of the side film 802 by molding with a bondable resin. It is more preferable to fuse the reinforcing member 811 with the outer surface of the side film 802 because a high bonding strength can be obtained.

  Examples of the thermoplastic resin constituting the reinforcing member 811 include polyolefin resins such as polyethylene and polypropylene, polyamide resins such as nylon, and polyester resins such as polyethylene terephthalate. In particular, when the same kind or the same resin as the thermoplastic resin forming the sealant layer and / or the outer surface of the side film 802 is selected as the thermoplastic resin forming the reinforcing member 81, high bonding strength can be obtained by heat fusion. So preferred.

  The upper end surface 811 b of the reinforcing member 811 is located below the upper side 801 b of the bag body 801. For this reason, when sealing and fusing the upper opening 808 after filling, or when attaching a spout to the upper opening 808, since the sealing die does not hit the reinforcing member 811, the operation is easy and reliable. The lower end surface 811 a of the reinforcing member 811 is located above the lower side 801 a of the bag body 801. Therefore, when the lower portion of the bag main body 801 is inflated and made to stand, the reinforcing member 811 does not protrude downward from the lower side 801 a of the bag main body 801, and the self-supporting property and the stability can be improved. The thickness of the reinforcing member 811 is not particularly limited, but in terms of improving shape retention and self-supporting property of the bag body 801, for example, 0. It can be about 1 to 5.0 mm.

  A first notch 805a is provided in the lower portion of the side seal portion 804, and a lower end surface 811a of the reinforcing member 811 protrudes into the first notch 805a. In addition, a second notch 805b is provided in the upper portion of the side seal portion 804, and the upper end surface 811b of the reinforcing member 811 protrudes into the second notch 805b. Therefore, when the reinforcing member 811 is formed by injection molding and simultaneously joined to the bag main body 801, the molds for forming the lower end surface 811a and the upper end surface 811b of the reinforcing member 811 through the notches 805a and 805b at the time of mold clamping The side films 802, 802 or they can be in direct contact with each other without interposing the bottom film 803. Therefore, a cavity without looseness can be formed between the molds, and the generation of burrs from the lower end surface 811 a and the upper end surface 811 b of the reinforcing member 811 can be suppressed.

  The outer corners 809a and 809b (see FIG. 8C) of the end faces of the side films 802 and 802 located at the periphery of the notches 805a and 805b are also covered with the injected resin, and the upper end and lower end of the reinforcing member 811 are notched. It joins over the periphery of 805a and 805b. As a result, since the lower end surface 811 a and the upper end surface 811 b of the reinforcing member 811 are unlikely to be the start points of bonding and peeling with the side films 802 and 802, the bonding strength of the reinforcing member 811 to the side seal portion 804 is improved.

  In the case of the ink containing pack 800, as shown in FIG. 8C, the corner portions 807 and 807 on both sides of the lower side 801a of the bag body 801 are cut in an arc shape and rounded. Thereby, as shown in FIG. 8E, when the standing pouch filled and sealed with the contents (ink) is allowed to stand on the flat surface F, the space between the corner portions 807 and 807 on the front side and the back side of the bag body 801 is by its own weight. It bends in the direction to open. Therefore, since the lower side 801 a of the bag body 801 does not protrude downward from the other portion, the entire lower side 801 a of the bag body 801 can uniformly abut on the plane F, and the entire lower side 801 a of the bag body 801 can be supported. , It can improve the stability when it is made independent.

  In order to package contents using the ink containing pack 800, a method may be used in which the contents are filled from the opening 808 at the top of the bag body 801 and then the opening 808 is fused and sealed. Further, in order to facilitate removal of the contents, it is preferable to attach a spout 821 between the upper sides 801 b and 801 b of the bag body 801 as in the spouted ink storage pack (standing pouch) 820 shown in FIG. 8D.

  The spout 821 is preferably a spout 821 having at least a layer of a thermoplastic resin that can be fused with the sealant layer of the side films 802, 802 in order to fuse the spout 821 to the bag body 801. In particular, a spout molded of a thermoplastic resin capable of being fused to the side film 802 is preferable. The material for forming the spout 821 is polyethylene (PE), polypropylene (PP), ethylene-vinyl acetate copolymer (EVA), polyester such as polyethylene terephthalate (PET), polyamide such as nylon, cyclic polyolefin, polybutylene Thermoplastics, such as, can be used. When the spout 821 is made of resin, it may be the same or the same resin as the reinforcing member 811.

  Joining of the spout 821 to the bag main body 801 may be performed simultaneously when forming the top seal portion 823 by fusion on the upper part of the bag main body 801 for joining the side films 802 and 802 to each other. In addition to the heating for forming the top seal portion 823, heating for joining the spout 821 may be additionally performed. The fusion bonding base 821a in which the spout 821 is sandwiched and joined between the two side films 802 and 802 seals the fusion bonding base 821a more reliably to the bag body 801 by forming a boat-shaped flange. Because it can be An adhesive or the like can also be used to fix the spout 821.

  Spout 821 can be sealed by closure means such as cap 822 for sealing. A releasably attachable cap 822 is preferred as a closure means so that repeated sealing is possible after partial removal of the contents. In addition, it is also preferable that the closing means, once opened, have a trace and be provided with a tamper proof function.

  When manufacturing the ink storage pack 820 with the spout 821, after inserting the bag main body 801 into a mold and providing a columnar reinforcing member 811 by injection molding of resin, the spout 821 is attached to the upper part of the bag main body 801. The order is preferred. In particular, after the bag main body 801 is inserted into a mold and a columnar reinforcing member 811 is provided by injection molding of resin, the ink storage pack 800 with the reinforcing member 811 is set in a filling machine to fill the contents. The order of attaching the spout 821 to the top of the bag body 801 after filling is preferable. This enables the filling of the contents before attaching the spout 821 and the opening 808 at the top of the bag body 801 can be largely opened at the time of filling, so that the filling speed can be increased.

  The ink storage pack 800 is flexible and has excellent self-sustainability by spreading the bottom film 803 and expanding the lower part. In addition, since the spout 821 is provided on the upper portion of the bag body 801, it is also possible to temporarily store the contents left after opening. If it becomes empty after using the contents, it can be easily folded and rolled to reduce the volume, so it is excellent in discardability and suitable for environmental protection. By arranging the reinforcing members 811 on both sides of the bag main body 801, the shape retention and the self-supporting property are improved, and the bag main body 801 is unlikely to be bent at an intermediate height, so the remaining amount is small. Even in this case, the bag can be inclined to pour out the contents or the bag can be made to stand alone, and the leakage or spill of the contents can be suppressed.

8F and 8G show other ink containing packs 800a and 800b.
In the ink containing packs 800a and 800b shown in FIGS. 8F and 8G, the bag main bodies 801A and 801B are composed of a pair of side films 802 and 802 and a bottom film 803 sandwiched below the side films 802 and 802. There is. Also, the bottom film 803 is folded in two along the folding line 803a, and the lower side 801a of the bag bodies 801A and 801B in FIGS. 8F and 8G so that the folding line 803a faces inward (upward in FIG. 8F). And a folding line 803a.

The two side films 802, 802 have the same shape, and in order to bond the two, side seal portions 804, 804 are formed on both the left and right sides by fusion. At the upper portion of the bag, the side seal portion 804 reaches the upper side 801 b of the bag body 801A, 801B. Further, extending seal portions 812 are extended toward the center from both ends of the upper side 801b of the bag main bodies 801A and 801B, and the upper side 801b of the bag main bodies 801A and 801B is provided between the left and right extending seal portions 812 and 812 An opening 808 is formed unfused between the side films 802 and 802.
Further, in order to join the side films 802 and 802 and the bottom film 803, a bottom seal portion 806 is formed by fusion at the lower part of the bag main bodies 801A and 801B. The bottom seal portion 806 is formed in a substantially arc shape in which the seal width in the vertical direction becomes larger toward the left and right side seal portions 804, 804, and it becomes possible to greatly widen the bottom in the width direction central portion of the bag ing.

Column-shaped reinforcing members 811 and 811 are joined to the side seal portions 804 and 804 and the extended seal portions 812 and 812 of the bag main bodies 801A and 801B by injection molding of resin.
In the case of the ink storage pack 800a shown in FIG. 8F, the reinforcing members 811 and 811 are joined to cover at least the end surface 804a of the side seal portion 804 and the end surface of the extended seal portion 812 It has a shape that is bent at both ends and has an extending portion 811c along the upper side 801b. Further, the upper end surface 811 b of the reinforcing member 811 is located on the extended seal portion 812 at a distance from the left and right ends of the opening 808. Further, the length of the extended seal portion 812 along the upper side 801 b of the bag body 801 A is longer than the length of the extended portion 811 c of the reinforcing member 811.

  In the case of the ink storage pack 800b shown in FIG. 8G, the reinforcing members 811 and 811 are joined so as to cover at least the end surface 804a of the side seal portion 804 and the end surface of the seal portion on the upper side 801b of the bag body 801B. The upper end surface 811b of the bag body projects from the upper side 801b of the bag body 801B.

A method of simultaneously forming the columnar reinforcing member 811 and joining the bag main bodies 801A and 801B by injection molding of resin by inserting the ink containing packs 800a and 800b, for example, the bag main bodies 801A and 801B into a mold. It is possible to manufacture with
A notch 805a is provided at a lower portion of the side seal portion 804, and a lower end surface 811a of the reinforcing member 811 protrudes into the notch 805a. Thus, when the reinforcing member 811 is formed by injection molding and simultaneously joined to the bag body 801A, 801B, the molds for forming the lower end surface 811a of the reinforcing member 811 through the notch 805a when the mold is clamped are side films It can be made to abut directly without passing through 802, 802 or them and the bottom film 803. Therefore, a cavity without loosening can be formed between the dies, and generation of burrs from the lower end surface 811 a of the reinforcing member 811 can be suppressed. The outer corner 809a (see FIG. 8C) of the end face of the side film 802 located at the periphery of the notch 805a is also covered with the injected resin, and the lower end of the reinforcing member 811 is joined across the periphery of the notch 805a. Be done. As a result, since the lower end surface 811a of the reinforcing member 811 is unlikely to be the start point of bonding and peeling with the side films 802, 802, the bonding strength of the reinforcing member 811 to the side seal portion 804 is improved.

  As described above, according to this embodiment, the following effects can be obtained.

According to the ink containing packs 800a and 800b, since the reinforcing member 811 is extended to a position along the upper side 801b of the bag body 801, 801A, 801B, the upper portion of the bag body 801, 801A, 801B is long Can also be reinforced. As a result, the shape retention property and the self-supporting property can be improved, and the bag body 801, 801A, 801B can be prevented from being bent at an intermediate height. Thus, the ink stored on the bottom side of the ink storage packs 800a and 800b can be efficiently drained.
In addition, it is possible to prevent the spout 821 from being bent from the height of the lower end portion of the fusion bonding base 821a at the upper part of the bag main bodies 801, 801A, 801B. Therefore, even when the remaining amount is small, it is possible to easily pour out the contents (ink) by letting the bag incline and make the bag stand on its own, and it is possible to suppress leakage and spillage of the contents. . In addition, since the lower end surface 811a of the reinforcing member 811 is positioned above the lower side 801a of the bag body 801, 801A, 801B, the reinforcing member 811 does not protrude downward from the lower side 801a of the bag body 801, 801A, 801B. Because of this, it is possible to improve the stability when standing on its own.

The ninth embodiment
Next, a ninth embodiment will be described.
9A and 9B are schematic views showing the configuration of the ink storage pack.

  As shown in FIG. 9B, the ink containing pack 900 is formed by using the three-sided sealed bag shown in FIG. 9A, and the laminated film 901 is formed at the lower part of the bag, that is, at the inside of the folded part 902. Three-way seal type folded back to fold, heat-seal the end edges on both sides with side seal parts 903, 903, and the upper part, that is, the part of upper seal part 904, opens before filling with contents (ink) The bag is made, and a jig is inserted from the opening at the top of the bag, and the body is expanded in a square tube shape to form a rectangular flat bottom at the bottom, and at this time, on both sides of the bottom The formed protrusion (in this case, a triangular protrusion) is flatly heat-sealed by the heat seal portion 905 to form a plate-like piece 906 protruding in the lateral direction.

  As mentioned above, according to the said embodiment, the following effects can be acquired.

  The filling of the contents can be easily performed from the opening at the top, and after the filling of the contents, the upper seal portion 904 can be heat-sealed to form the ink containing pack 900 having the configuration shown in FIG. 9B. In such an ink containing pack 900, since a rectangular flat bottom is surely formed at the bottom, good self-supporting property is provided, and the protrusions formed on both sides of the bottom are heat-sealed. Since it is heat-sealed flat at 905 and has a shape projecting laterally as the plate-like piece 906, the self-supporting property is assisted at this portion, and a more stable self-supporting property is provided. In addition, since the outer shape of the ink storage pack 900 is reversely tapered from the bottom to the top, ease of holding is added, for example, the contents such as a beverage are filled and the top is opened. Even when drinking, you can hold it safely.

  In the configuration of the ink containing pack 900, when it is not necessary to make the plate-like piece 906 protrude in the lateral direction to support the self-supporting property, the plate-like piece 906 is folded below the bottom or folded up. It is also possible to use an adhesive such as hot melt on the bottom or side of the ink containing pack 900, or if heat bonding is possible, heat bonding and fixing. In that case, since the shape of the bottom part becomes a clear shape, the appearance and handleability can be further improved. Such a configuration of the bottom portion can be similarly adopted in the ink containing pack 900a shown in FIGS. 9C and 9D described below.

  In addition, the laminated film used for the ink storage pack 900 is, for example, a laminated film based on a plastic film as used in a bag for ordinary liquid packaging, a thin film at least as described above in the intermediate layer A laminated film laminated with relatively thick paper can be used. When using the laminated film which makes a plastic film a base, the following structures are mentioned as a typical structural example.

  (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 oriented PP film / adhesive / L · LDPE film (sealant layer) (4) ON film / adhesive / aluminum foil / adhesive / L · LDPE film (sealant layer) (5) ON film / adhesive / Biaxially oriented PP film / adhesive / aluminum foil / adhesive / L · LDPE film (sealant layer) (6) ON film (silica or alumina or aluminum deposited layer) / adhesive / biaxially oriented HDPE film / adhesive / L · LDPE film (sealant layer) (7) ON film / adhesive / (silica or alumina or aluminum deposited layer) PET film / Adhesive / L · LDPE film (sealant layer) (8) ON film / anchor coat layer / coextrusion coat layer (HDPE layer / L · LDPE layer) (Sealant layer is L · LDPE layer) (9) ON film / Anchor coat layer / co-extrusion coat layer (HDPE layer / LDPE layer) / adhesive / L · LDPE film (sealant layer) (10) PET film / adhesive / L · LDPE film (sealant layer) (11) PET film / Adhesive / Aluminum foil / Adhesive / ON film / Adhesive / L · LDPE film (Sealant layer) (12) PET film / Adhesive / Aluminum foil / Adhesive / ON film / Adhesive / CPP film (Sealant layer) ) (13) PET film / adhesive / ON film / adhesive / aluminum foil / adhesive / L · LDPE film (sealant) ) (14) PET film / adhesive / ON film / adhesive / (4) aluminum foil / adhesive / CPP film (sealant layer) (15) PET film / adhesive / EVOH film / adhesive / ON film / adhesive An agent / CPP film (sealant layer) and the like can be mentioned, however, it is not limited to these and various combinations of laminated films can be used.

  In the construction of the laminated film, ON film is biaxially stretched nylon film, PET film is biaxially stretched polyethylene terephthalate film, PP is polypropylene, L. LDPE is linear low density polyethylene, HDPE is high density polyethylene, LDPE is low Density polyethylene, CPP film refers to non-oriented polypropylene film, and EVOH film refers to ethylene-vinyl acetate copolymer saponified film.

  And since the adhesive between each film layer usually performs the lamination | stacking by the dry lamination method, well-known adhesives for dry laminations, such as a 2 liquid hardening-type polyurethane adhesive, can be used. The anchor coat is a kind of primer coat which is previously coated on the side of the base film in order to improve the adhesion when laminating the resin by extrusion coating.

  In the case of using the ON film and the PET film as the outermost layer in the configuration of the laminated film, they are used as a base film to give mechanical strength, heat resistance, printability and the like to the bag, and used in the intermediate layer Is mainly used to reinforce mechanical strength. When a biaxially stretched HDPE film or a biaxially stretched PP film is used for the intermediate layer, the thickness of the laminated film can be increased to increase the rigidity and mechanical strength, and at the same time, the water vapor permeability can be decreased.

  In addition, aluminum foil, silica or alumina or a vapor deposited layer of aluminum, EVOH film and the like are mainly laminated to impart gas barrier properties, and besides these, a coating layer of polyvinylidene chloride, or a polyacrylonitrile film And the like can be laminated.

  As the sealant layer of the innermost layer, two examples of L. LDPE film and CPP film were mentioned, but the L. LDPE film is heat-seal stability and content resistance, for example, stress cracking resistance to surfactant It is particularly suitable for the packaging of beverages and other liquids because of its excellent properties. In addition, CPP films are excellent in heat resistance and low odor, and are suitable for packaging contents requiring these properties.

  In addition to the above, the high pressure method LDPE, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic acid ester in addition to the above in the sealant layer Copolymers, ionomers, polyester resins and the like can be appropriately selected and used.

  In particular, an ethylene / α-olefin copolymer polymerized using a single site catalyst such as a metallocene catalyst has a narrow molecular weight distribution and a stable copolymerization ratio, so low temperature heat sealability and hot temperature In addition to excellent sealing properties, it is also excellent in low odor, and has good workability and stability in heat sealing, and is suitable for packaging of contents for which low odor is required.

  When a laminated film in which at least paper is laminated to the intermediate layer is used as the laminated film, for example, a thin paper such as a label paper is additionally laminated on the inner side of the outermost layer of the laminated film having the above configuration Alternatively, the paper itself may be used as a base material and polyethylene or other plastic material may be laminated on both sides thereof. As a configuration example of a laminate film based on paper, for example, a configuration in which LDPE layer / paper / LDPE layer are laminated sequentially from the outside, or LDPE layer / paper / LDPE layer / aluminum foil / adhesive / PET film / The structure etc. which laminated | stacked the anchor-coat layer / LDPE layer in order are mentioned.

  Since the laminated film having such a configuration is provided with the LDPE layer (the sealant layer) in the outermost layer, for example, a hole for the spout and a knob for sealing the hole are provided on the upper part of the freestanding bag. In the case where the sealing tape is provided, by providing a heat adhesive resin layer such as an LDPE layer in the innermost layer of the sealing tape, the hole for the spout can be easily sealed by the heat sealing method. Is suitable. In this case, when the sealing strength of the sealing tape is too strong, the sealing strength can be adjusted by applying an anti-heat sealing agent or the like to the bonding portion of the sealing tape. In addition, the sealing tape is likely to be broken not only on the outer surface of the hole for the spout but also on the inner surface, for example, a relatively thin film of LDPE or aluminum foil laminated with LDPE. A sealing tape of the above configuration may be provided.

  9C and 9D show the configuration of another ink containing pack 900a. The ink storage pack 900a is formed by using the pillow type bag shown in FIG. 9C, and both left and right sides of the laminated film 901 are folded inward with a predetermined width, and the folded edge portions are folded together. After heat sealing with the back seal portion 907 in a sealed manner, and placing the back seal portion 907 on one side, the lower edge portion is heat sealed with the bottom seal portion 908 to form the upper portion, that is, a portion of the top seal portion 904 However, prepare a pillow-type bag that opens before filling with the contents (ink), and from the opening at the top of this bag, use the jig as in the case of the three-way seal-type bag shown in FIG. 9A. The body is inserted and spread in a square tube shape to form a rectangular flat bottom at the bottom, and at this time, the protrusions formed on both sides of the bottom (also in this case, the triangular protrusions) are flat. Heat seal unit 905 And Toshiru, which is constituted of plate-like pieces 906 projecting laterally to form.

  As mentioned above, according to the said embodiment, the following effects can be acquired.

  The filling of the contents can be easily performed from the opening at the top, and after the filling of the contents, the upper seal portion 904 can be heat-sealed to form the ink containing pack 900a having the configuration shown in FIG. 9D. Similar to the ink storage pack 900 shown in FIG. 9A, such an ink storage pack 900a is provided with a rectangular flat bottom at the bottom, so that good self-supporting property is provided, and The protrusions formed on both sides of the bottom surface are heat sealed flatly by the heat seal portion 905 and have a shape projecting laterally as the plate-like piece 906, so that the self-supporting property is assisted at this portion, and the stability is further enhanced. Autonomy is granted. In addition, the ink containing pack 900a is also reverse tapered from the bottom to the top in the same manner as the ink containing pack 900 shown in FIG. Even when filling the contents, etc. and opening the top and drinking, it is easy to hold and can be held by hand safely.

Tenth Embodiment
Next, a tenth embodiment will be described.
FIG. 10A is a schematic view showing the configuration of the ink storage pack.

  As shown in FIG. 10A, the lower part of the ink storage pack 1100 is folded back toward the bottom film between the lower parts of the front and rear two wall films 1101 and 1101 ', and the vicinity of the lower ends of both side edge parts The bottom film cutouts 1104 and 1104 are provided in the form of a gusset portion 1105 formed by inserting the bottom film folding portion 1103. The gusset portion 1105 is a curved line with the inside directed from both sides toward the center. Bottom-shaped seal pattern having a concave shape, that is, formed by heat sealing with the bottom seal portion 1102, the body portion is a bag with the end edges on both sides of the front and rear two wall films 1101 and 1101 ' A seal pattern having a shape in which the width is narrowed to a shape that is tapered with a slope from both sides near the middle portion in the lengthwise direction, and from there to the top, The heat seal is performed by the side seal portions 1106 and 1106, and the outside of the heat seal portion at the portion where the width is narrowed is notched at the notch portions 1107 and 1107 leaving the heat seal portion having a predetermined width. It is formed. In addition, a spout 1120 including a discharge port S made of a plastic molding is joined to the upper edge of the bag by an ultrasonic seal or the like, and the edge on both sides thereof is heat sealed by the upper seal portion 1108 It is configured.

  In this case, the outlet 1120 mainly includes the cylindrical portion 1121 and the adhesive base 1122 is provided at the lower part, the flange 1123 is appropriately provided thereon, and the separate screw type cap 1124 is attached at the upper part It has a two-piece type configuration. To attach the spout 1120 to the bag, insert the adhesive base 1122 of the spout 1120 between the films on both sides of the upper edge of the ink containing pack 1100 and use ultrasonic or other heating means from the outside It can be thermally bonded and joined by a method of heat and pressure bonding.

  The material of the outlet 1120 is required to be heat-bonded to the sealant layer of the laminated film of the bag, and for example, polyester, etc. can be used besides polypropylene, polyethylene such as medium density or high density. In addition, filling of the contents (ink) into the ink storage pack 1100 is performed from the spout 1120 in a state where the cap 1124 is removed, but after filling the contents, the opening of the spout 1120 before closing the cap 1124 The sealing property can be further improved by thermally bonding the laminated film sealing material.

  In addition, as for the shapes of the side seal portions 1106 and 1106 on both sides of the ink storage pack 1100, the shape is vertical from the upper portion to the upper portion after being narrowed with an inclination from both sides near the middle portion in the lengthwise direction of the bag. Although it does not necessarily have to be vertical after it has a slope from both sides, it is not necessary to be vertical, and both sides have a parallel shape, or both sides slope inward from there to the top unless the width is increased again. The shape may be further narrowed toward the top.

  As a representative example of the configuration of the laminated film used for the ink storage pack 1100, the following configuration may be mentioned. (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 Agent / biaxially oriented PP film / adhesive / L · LDPE film (sealant layer) (4) ON film / adhesive / biaxially oriented PP film / adhesive / aluminum foil / adhesive / L · LDPE film (sealant layer) ) (5) ON film (silica or alumina deposited layer) / adhesive / biaxially stretched HDPE film / adhesive / L · LDPE film (sealant layer) (6) ON film / adhesive / (silica or alumina deposited layer) PET film / adhesive / L · LDPE film (sealant layer) (7) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L · · LDPE layer) (Sealant layer, L · LDPE layer) (8) ON film / anchor coat layer / coextrusion coat layer (HDPE layer / LDPE layer) / adhesive / L · LDPE film (sealant layer) (9) PET Film / adhesive / aluminum foil / adhesive / ON film / adhesive / L · LDPE film (sealant layer) (10) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (sealant) Layer) (11) PET film / adhesive / ON film / adhesive / aluminum foil / adhesive / L · LDPE film (sealant layer) (12) PET film / adhesive / ON film / adhesive / aluminum foil / adhesive Agent / CPP film (sealant layer) (13) PET film / adhesive / EVOH film / adhesive / ON film / adhesive CPP film (sealant layer), etc., may be used a laminated film of various combinations without being limited thereto.

  In the above configuration, the ON film is a biaxially stretched nylon film, the PET film is a biaxial stretched polyethylene terephthalate film, PP is polypropylene, L·LDPE is linear low density polyethylene, HDPE is high density polyethylene, and LDPE is low density polyethylene CPP films are non-oriented polypropylene films, and EVOH films are ethylene-vinyl acetate copolymer saponified films.

  And, since an adhesive between the respective film layers is usually laminated by a dry lamination method, an adhesive for dry lamination such as a two-component curable polyurethane adhesive can be used. The anchor coat is a kind of primer coat which is previously coated on the side of the base film in order to improve the adhesion when laminating the resin by extrusion coating.

  In the case of using the ON film and the PET film as the outermost layer in the configuration of the laminated film, they are used as a base film to give mechanical strength, heat resistance, printability and the like to the bag, and used in the intermediate layer Is mainly used to reinforce mechanical strength. When a biaxially stretched HDPE film or a biaxially stretched PP film is used for the intermediate layer, the thickness of the laminated film can be increased to increase the rigidity and mechanical strength, and at the same time, the water vapor permeability can be decreased.

  And, aluminum foil, silica or alumina deposited layer, EVOH film, etc. are mainly laminated to impart gas barrier properties, and besides these, metal deposited layer such as aluminum, coated layer of polyvinylidene chloride, Alternatively, a gas barrier material such as a polyacrylonitrile film can be laminated.

  As the sealant layer of the innermost layer, two examples of L. LDPE film and CPP film were mentioned, but the L. LDPE film is heat-seal stability and content resistance, for example, stress cracking resistance to surfactant CPP film is excellent in heat resistance and low odor, and is suitable for packaging of contents requiring these properties.

  In the sealant layer, in addition to the above, according to the contents to be filled, an ethylene · α-olefin copolymer, an ethylene · vinyl acetate copolymer, an ethylene · acrylic acid copolymer, an ethylene · acrylic acid ester copolymer, An ionomer, a polyester resin, etc. can also be selected suitably and can be used.

  In particular, an ethylene / α-olefin copolymer polymerized using a single site catalyst such as a metallocene catalyst has a narrow molecular weight distribution and a stable copolymerization ratio, so low temperature heat sealability and hot temperature The sealant layer of the bag is excellent in sealability and has a step due to the difference in overlapping of the films in the heat seal portion, such as between the lower gusset portion and the body seal portion, like the free standing bag of the present invention It is suitable at the point which can prevent generation | occurrence | production of the pinhole by seal omission. Furthermore, by using a blend of an olefin-based elastomer with the copolymer, the thermal flowability of the sealant layer is improved, and the occurrence of pinholes due to the step or the like can be more effectively prevented.

  As described above, according to this embodiment, the following effects can be obtained.

  The ink storage pack 1100 is lightweight and not bulky, and the storage property of the contents is good, and disposal after use is easy. And, the filling of the contents can be easily done from the upper outlet, and after filling, the cap can be closed and sealed.

  Since the lower gusset portion 1105 is heat-sealed by the bottom seal portion 1102 whose inner side is formed by a curved line, the ink storage pack 1100 filled with contents is near the middle portion in the longitudinal direction of the bag. Since the lower side spreads like a cylinder greatly on the bottom side and the ring shaped leg part is formed by the heat seal part joined on both sides by the bottom face film notch parts 1104 and 1104 on the outer periphery of the bottom surface, excellent self-supporting property is imparted. As it is easy to handle, and compactly packed for capacity, it is possible to reduce distribution costs and to reduce the display space at the store.

  In addition, with regard to the overall shape of the ink storage pack 1100, the width of the both sides of the bag is narrowed to a shape in which the both sides are inclined from both sides in the vicinity of the middle portion in the length direction (height direction) of the bag. The heat seal is performed by the side seal portions 1106 and 1106 which are vertical to the top, and the outside of the heat seal portion of the narrowed portion is cut away leaving the heat seal portion having a predetermined width, The lower part becomes cylindrical from the vicinity of the middle part, and the width of the upper part is narrow, and it does not become like an involuntary shoulder like the conventional standing pouch, and occurs at a position slightly above the middle part of the trunk. Because it has a small amount of broken creases and has a spout on the top joined with a molded plastic body, it looks like a shape-retaining container such as a bottle and it is smart, and the display effect at the store is excellent There.

  Then, when the contents (ink) are to be injected into the cartridge 50, the cap 1124 is removed and the spout 1120 is opened, and the upper and lower portions of the ink containing pack 1100 are supported by hand from the lower side. By lightly pressing the heat seal parts on both sides of the upper part toward the central part from both sides, the upper part is easily spread, and in this state, the discharge port S is directed to the cartridge 50 and the ink is discharged by tilting the ink containing pack 1100. It is dispensed from the exit S. Therefore, the pouring posture of the ink storage pack 1100 into the cartridge 50 is stabilized, and the dripping of the ink can be suppressed. In addition, the shape retention property of the pouring passage in the ink containing pack 1100 is good, the pouring passage is not blocked in the middle of the pouring, and the width of the upper part is formed narrow even if the bag has a relatively large volume. Because it is easy to hold, the ink can be poured out safely and easily to the end. Moreover, since the opening 1120 of the pouring spout 1120 is easy to open and close the cap 1124, even when the ink is used by dividing it into a plurality of times, it can be safely stored until the next time of use. can do.

FIG. 10B shows the configuration of another ink containing pack 1100a.
In the configuration of the ink containing pack 1100, the ink containing pack 1100a shown in FIG. 10B has a crease-like embossed portion 1109 in the upper area of the bag below the outlet 1120, and the lower part from the under the outlet 1120. A total of three lines on both sides and a central portion are additionally provided toward the image forming apparatus, and the other structure is formed and formed in the same manner as the ink containing pack 1100. The embossed portion 1109 may be provided only on one of the wall films 1101 and 1101 ′ on both sides, but is more preferably provided on the films on both sides.

  As mentioned above, according to the said embodiment, the following effects can be acquired.

  When the contents (ink) filled in the ink storage pack 1100a are poured out to the cartridge 50, since a crease-like embossed portion 1109 is provided from the bottom of the discharge port S downward, Since the front and rear wall films 1101 and 1101 'are not in close contact with each other, the upper part of the bag spreads more easily to form the pouring passage, and the formed shape of the pouring passage is also improved. The contents can be poured out more safely and easily to the end with a stable flow without blocking the pouring path.

  The present invention is not limited to the above-described embodiment, and various modifications, improvements, and the like can be added to the above-described embodiment. A modification is described below.

(Modification 1) In the first embodiment, the ink storage pack 100 is inclined to pour the ink into the cartridge 50 by way of example, but the invention is not limited thereto. For example, the ink storage pack 100 may be directly attached to the printing system 1 or the printer 2 and the ink stored in the ink storage pack 100 may be replenished. Even in this case, since the ink storage pack 100 is highly self-supporting, the ink can be stably replenished from the ink storage pack 100 when the ink storage pack 100 is attached to the printer 2 or after the attachment.
Alternatively, the ink storage pack 100 may supply ink to the cartridge 50 through a flexible tube or the like. In this case, ink is replenished through the flexible tube in a state where the ink containing pack 100 is made to stand on its own. Even in this case, since the ink storage pack 100 is highly self-supporting, the ink can be stably replenished.
Further, the cartridge 50 is not limited to the form that can be detached from the printer 2 separately from the printer 2, and may be integrally fixed to the printer 2.
Also, the cartridge 50 is not limited to a so-called off-carry type cartridge disposed separately from the carriage 25, but may be a so-called on-carry type cartridge provided on the carriage 25.

  DESCRIPTION OF SYMBOLS 1 ... printing system, 2 ... printer, 3 ... holder, 22 ... control part, 26 ... head, 50 ... cartridge, 100, 200, 200a, 200b, 300, 400, 400a, 500, 500a, 500b, 600, 600a, 600b, 600c, 700, 700a, 700b, 800, 800a, 800b, 820, 900, 900a, 1100, 1100a ... ink containing pack.

Claims (3)

What is claimed is: 1. An ink containing pack having a folded portion formed by being folded back at a bending line along a side seal portion, comprising:
An ink storage pack having a multiple structure in which the folding line is positioned more inward than the inner edge of the side seal portion, and the folded portion is further folded back. What is claimed is: 1. An ink containing pack comprising: a seal portion obtained by sealing a front side film and a rear side film; and an unsealed portion not sealed.
A first unsealed portion positioned between a pair of vertically extending first side seal portions;
A second unsealed portion provided apart from the first unsealed portion and positioned between a pair of vertically extending second side seal portions;
The first unsealed portion is a portion to be filled with ink, and the second unsealed portion is a portion to be filled with a shape-retaining material for enhancing the shape retention of the pack,
The pair of second side seal portions includes an inner second side seal portion positioned on the first unsealed portion side, and an outer second side seal portion opposed to the inner second side seal portion. Consists of
The outer second side seal portion extends along the side edge of the ink containing pack and does not reach the upper edge of the bag.
The second unsealed portion includes an upper unsealed portion positioned above an upper edge of the outer second side seal portion,
The ink containing pack, wherein the upper unsealed portion extends to upper and side edges of the bag. An ink storage pack in which a bottom member folded in half is sandwiched between the lower ends of the front and back films with the folding portion up, and the peripheral portion is sealed,
An ink storage pack characterized in that the bottom member is provided with an independent filling chamber different from the content storage portion.