JP2019073312A - Ink storage pack - Google Patents

Abstract

To provide an ink storage pack that exhibits high sealability.SOLUTION: The ink storage pack in which two side films and a double-folded bottom film are sealed with a side seal and a bottom seal and which has a folded part folded by a bending line along the side seal is characterized in that the intersection point of a folding line of the bottom film and the bending line is positioned within a bottom seal.SELECTED DRAWING: Figure 1D

Description

  The present invention relates to an ink storage pack capable of storing ink.

  Conventionally, a liquid package composed of a film on the front and back and a film for the bottom has been known (see, for example, Patent Document 1). In the liquid package, the front and back films are heat sealed to each other, and in the lower part, the bottom film and the front and back films interposed between the front and back films are heat sealed.

JP, 2016-216046, A

  However, in the liquid package as described above, when the sealing property is low, there is a problem that the contents (for example, ink) leak out.

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

  Application Example 1 In the ink storage pack according to this application example, the two side films and the bottom film folded in half are sealed by the side seal portion and the bottom seal portion, and are folded back along a folding line along the side seal portion. An ink storage pack having a folded back portion, wherein an intersection of a fold line of the bottom film and the folding line is located in a bottom seal portion.

  According to this configuration, it is effective that the stress from the contents by the water hammer generated at the time of falling acts on the intersection point, for example, by the intersection point of the crease of the bottom film and the bending line being located in the bottom seal portion. It is prevented. That is, the sealability is improved, and the leakage of the contents can be prevented.

  Application Example 2 In the ink containing pack according to this application example, a gusset pouch main body in which a gusset part folded inward is inserted into both left and right sides of a pair of front parts and a side seal is formed; The Gazette pouch body is a half of the overall length from the upper end of the front portion and 1/1 of the lateral width thereof from the side end. The partial side seal in which the front face portion and the gusset portion are heat-sealed is formed in an area of 8 to 100% of the partial side seal formation range in the partial side seal formation range 4 .

  According to this configuration, it is possible to prevent breakage of the ink containing pack even in the case of being applied with an excellent pressing strength, in particular, even when an unbalanced pressing force such as squeezing from the bottom to the top is applied. Thereby, the leak etc. of the contents can be prevented.

  Application Example 3 In the ink storage pack according to this application example, the front and rear sheet portions of substantially rectangular resin films overlap each other, and the gusset sheet portions made of resin film are folded in half along the sides between the front and rear sheet portions. Between the front sheet and the gusset sheet at least on the side and both sides sandwiching the side, between the rear sheet and the gusset sheet and between the front and the rear sheet A non-sealed part was formed around the intersection by bonding with a band-shaped heat seal part and extending around the intersection where the seal edge of the heat seal part on the both sides tries to cross the broken line of the gusset sheet part It is characterized by

  According to this configuration, the seal edge is detoured around the intersection at the intersection where the seal edge is about to cross the broken line of the gusset seat portion, so that the non-sealed portion is provided around the intersection. When a force is applied to the ink storage pack from the outside or when the ink storage pack drops, stress that tends to concentrate on the intersection of the seal edge and the broken line even if a water hammer acts by the contents It can be dispersed. That is, the sealability is secured, and the leakage of the contents can be prevented.

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. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the 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 view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the 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 view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the 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 view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the second embodiment. FIG. 7 is a view showing the method of manufacturing the ink containing pack according to the 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. 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. 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. 11 is a schematic view showing the configuration of an ink storage pack according to a 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. 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. 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 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. 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.

  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 to 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 long sides of the substantially L-shaped outer shape face the −Y axis direction, and shorts of the substantially L-shaped outer The holder 3 is mounted with its 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 has 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 on the −X axial direction side in FIG. 1B). 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 1H show the configuration of the ink storage pack 100. FIG.

As shown in FIGS. 1D and 1E, both of the ink containing packs 100 are positioned with the bottom film 103 folded between the side films 102a and 102b at the fold line 108, and both ends of the side films 102a and 102b. A bottom seal portion 106 in which the side seal portions 104a and 104b and the side films 102a and 102b, which are joined together, and the bottom film 103 are joined is formed. A desired ink containing pack (standing) is formed by bending at the folding lines 107a and 107b along the side seal parts 104a and 104b, and an opening for filling the contents and a discharge port having a shape according to the application. (Pouch) 100 is formed.
The two side films 102a and 102b and the bottom film 103 that constitute the ink storage pack 100 are not limited to the case where they have independent film configurations, and these films consist of one film and become the bottom. It is also possible to use a W-folded version of the part.

  As shown in FIG. 1D, in the ink container pack 100, the contents (ink) are filled by positioning the intersection points 109a and 109b of the folding lines 107a and 107b and the folding lines 108 of the bottom film 103 in the bottom seal portion 106. Even if the ink storage pack 100 vertically falls after being dropped, the intersection points 109a and 109b are not in direct contact with the contents, and generation of a bag or pin hole due to stress concentration can be effectively prevented, and the drop impact resistance is remarkable. Can be improved. Thereby, the leak of the contents can be prevented.

In the ink storage pack 100, the side films 102a and 102b are joined as part of the bottom seal at the corners 111a and 111b on the storage section 110 side formed by the fold lines 108 and the inner edge of the side seal (hereinafter, 111a). , 111 b may be referred to as a seal portion).
The seal portions 111a and 111b constitute the bottom seal portion 106 continuously with the bottom seal portion 106 which joins the side films 102a and 102b and the bottom film 103, and the side seal portions 104a and 104b are continuous with each other. It is important that the portions 109, 109b be completely sealed by these seals.
The size of the seal portions 111a and 111b is not particularly limited as long as the intersection points 109a and 109b are positioned in the bottom seal portion 106, but in order to secure the capacity of the storage portion 110, from the intersection points 109a and 109b to the storage portion 110 It is desirable that the shortest distance of is in the range of 2 to 3 mm.

In the ink container pack 100, the intermediate pouch is bent along a bending line in order to improve the self-supporting property and to soften the touch when holding the hand.
In the ink container pack 100, the bending line extends in the axial direction along the side seal portion of the pouch, but is positioned on the pouch inner side (the storage portion side) with respect to the inner end edge of the side seal portion. Is desirable. This facilitates bending and improves the self-supporting property. Although the distance from the inner edge of the side seal portion of the bending line differs depending on the size of the pouch, the width of the side seal portion, etc., 1.5 to 2 from the inner edge of the side seal portion to the pouch inner side Preferably, it is .5 mm.
In the ink container pack 100, the folded portion is formed by bending the intermediate pouch, an example of which is shown in FIG. 1D, at bending lines 107a and 107b, and the side seal portion outside the bending lines 107a and 107b. The pouch width direction end portion including the forms a folded portion.
Further, from the viewpoint of improving the self-supporting property of the ink storage pack 100, 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. More preferably, the entire axial direction from the bottom to the top is It is desirable that the upper portion of the portion where the bottom film is located or the portion where the bottom film is located and the folded portion be fixedly joined to the side film.

In the ink container pack 100, it is particularly preferable to further perform the same bending process on the folded portion subjected to the bending process at the folding line so that the folded portion has a multiple structure. As a result, the rigidity of the folded portion is improved, and the self-supporting property of the ink containing pack 100 and the occurrence of buckling and wrinkling at the time of self-supporting are effectively prevented, and the cut edge of the side film is positioned inside the multiple structure. This makes it possible to soften the grip when grasping and effectively prevent catching.
The folded portion 112 which has been bent once at the folding lines 107a and 107b shown in FIG. 1D has a single-layer structure as shown in FIG. 1F.
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.

  In the ink containing pack 100, the discharge port of the content is formed above the containing portion 110, but the shape and location of the spout are for the use of the ink containing pack 100, such as the property and size of the contained content. Accordingly, conventionally known shapes and the like can be adopted. In the case where the discharge port is provided at the upper corner of the ink containing pack 100, it is desirable from the point of the pouring property that the above-mentioned folded portion is formed up to the lower part avoiding the discharge port.

The ink storage pack 100 is a single layer film made of a thermoplastic resin having heat sealability, or a thermoplastic resin film having these heat sealability as an inner layer of the pouch, and a layer structure of two or more layers laminated with other films. 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 can be used as the inner layer of the pouch, and various thermoplastic resins, metal foils such as aluminum foil, paper, cellophane, etc. can be used as the outer layer or the intermediate layer. . When a gas barrier property is given to the pouch, a layer comprising a gas barrier resin such as ethylene vinyl alcohol copolymer, nylon or cyclic olefin copolymer, a resin layer having a metal oxide deposited film such as aluminum or silicon oxide, clay A conventionally known laminated film including a resin layer containing a mineral and a metal foil such as aluminum can be used.

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

  When the intersection point of the folding line 108 of the bottom film 103 and the folding lines 107a and 107b is located in the bottom seal portion 106, for example, it is effective that the stress from the contents by the water hammer generated at the time of dropping acts on the intersection point. It is prevented. That is, the sealing performance is improved, and the leakage of the contents (ink) can be prevented.

Second Embodiment
Next, a second embodiment will be described. The configuration of the printing system is the same as that of the first embodiment, so the description will be omitted, and the configuration of the ink storage pack will be described in detail.
2A to 2V are schematic views showing the configuration of the ink storage pack.

  As shown in FIGS. 2A and 2B, the ink containing pack 200 is made of the laminated film folded inward on both left and right sides of a pair of front portions 210 made of laminated films having a heat fusion layer at least on the innermost layer. The adhesive part (Ba) of the spout (B) is inserted into the upper open end of the gusset pouch body (A) in which the gusset part 230 is inserted and the side seal 220 is formed from the upper end to the lower end of the front part 210 To be formed.

In the gusset pouch body (A), a partial side seal 220a is formed in the range of 1⁄2 of the total length (H) from the upper end of the front portion 210 and 1⁄4 of the lateral width (W) from the side end . In the ink containing pack 200, the shapes of the upper seal 250 and the lower seal 240 are not limited. However, in FIG. 2B, the upper seal 250 serves as the upper seal 250 at the upper open end of the gusset pouch body (A). The adhesive part (Ba) is inserted, the seal area of the both ends of the top seal 250 is enlarged, and what forms the linear bottom seal 240 as the bottom seal 240 is shown.
In the ink container pack 200, it is not clear why the partial pressure seal can be secured by forming the partial side seal 220a at a predetermined position in addition to the side seal 220 of the gusset pouch main body (A). However, it has been found that the formation of the partial side seal 220a changes the side shape of the ink storage pack 200 when a pressure is applied.

  Here, when the content (ink) is filled in the ink storage pack 200 in which the partial side seal 220a is formed at a predetermined position in addition to the side seal 220, as shown in the partial side view of FIG. Even when an unbalanced pressure is applied, substantially right angle bending does not occur. Rather, the pair of front portions 210 expand in an arc shape, and the spout (B) is fixed at the central top. For this reason, the partial pressure is dispersed in the upper portion of the ink storage pack 200, so that the film is prevented from being pulled outward in the vicinity of the lower end corner portion of the bonded portion (Ba) of the injection port (B), and the bag is prevented. It is thought that.

  The deformation of the above-described ink containing pack 200 is not limited to the shape of the upper seal 250 as long as it has the bonding portion (Ba) at the lower part of the spout (B), and both are similar. Furthermore, if the ink storage pack 200 has the partial side seal 220a described above, the depth of the gore portion 230, the shape of the bottom seal 240, etc. will be appropriately determined in consideration of the kind and filling amount of the filling, etc. It can be selected. Since the ink containing pack 200 of the present invention has no limitation on the folding depth of the gore portion 230, it is possible to manufacture a large capacity ink containing pack 200.

  In the ink containing pack 200, as shown in FIG. 2A, side seals 220 are formed on the left and right sides of the pair of front portions 210 in the gusset pouch body (A).

  In the present embodiment, the “side seal” refers to a gusset pouch main body to ensure liquid tightness of the end overlapping portion of the gusset portion 230 and the front portion 210 which are formed by overlapping heat fusion layers facing each other. The part heat-sealed with the same width over the entire length from the upper end to the lower end of (A).

  The upper seal 250 is a seal for inserting and sealing the spout (B) into the upper open end of the gusset pouch body (A). However, when calculating the area and size of the partial side seal 220 a, the narrowest width (longitudinal) of the upper seal 250 of the ink containing pack 200 and the lateral width (horizontal) of the upper end of the ink containing pack 200 are enclosed. This range is referred to as “calculation upper seal 250 ′”, which is used in place of the upper seal 250.

Further, the partial side seal formation range (X) refers to a range of 1⁄2 of the total length from the upper end of the front surface portion and 1⁄4 of the lateral width of the gusset pouch main body from the side end.
Further, the partial side seal 220a refers to a portion formed in the partial side seal formation range (X), in which the front portion and the gusset portion are heat-sealed. The partial side seal 220 a may be formed separately from the side seal 220 or the upper seal 250, or may be formed simultaneously with the side seal 220 or the upper seal 250. When separately formed, the partial side seal 220 a may overlap the side seal 220 or the upper seal 250. However, in the present invention, when calculating the area and size of the partial side seal 220a, the front portion 210 and the gusset portion 230 are heat-sealed portions, and the side seal 220 and the calculation upper seal 250 ' It is the part excluding the overlapping part of. In the present invention, the area of the partial side seal 220 a is an area of 8 to 100% of the partial side seal formation range (X). For the sake of convenience, the partial side seal 220a excluding the overlapping portion with the side seal 220 and the calculation upper seal 250 'is referred to as a substantial partial side seal 220a and used appropriately. Depending on the method of forming the partial side seal 220a, the partial side seal 220a and the substantial partial side seal 220a may be the same.
The partial side seal formation range (X) in the ink storage pack 200 of the present invention is shown in FIG. 2D. A half of the total length from the upper end of the front portion 210 constituting the gusset pouch main body (A) is represented by Xy, and a lateral width from the side end is represented by Xx. Further, planned locations of the side seal 220 and the bottom seal 240 are indicated by alternate long and short dashed lines. The description of the upper seal is omitted.

  Here, the length of the front surface portion 210 in the present invention refers to the longitudinal length (H) including the bottom seal and the top seal. In addition, as shown in the figure, in order to facilitate the formation of the bottom of the gusset pouch container, when the corners of the bottom seal are sealed at an inclination of 45 ° or when the corners of the bottom seal are further cut off, When the part is not square, the length (H) of the front part is the longest longitudinal length of the front part. Further, the lateral width (W) of the front portion 210 refers to the lateral length including the side seal. In the case where the front part is not square, the width (W) of the front part is the longest horizontal length of the front part.

Further, the partial side seal formation range (X) exists on the left and right of the front surface portion 210, and the gusset pouch main body (A) forms the pair of front surface portions 210 with the heat fusion layer facing each other. Therefore, in the ink storage pack 200, a total of four partial side seal formation ranges (X) may exist. In the present invention, the partial side seal 220a may be formed at at least one position in the four partial side seal formation ranges (X). The area percentage (%) of the partial side seal described above in the present invention means the area percentage (%) of the partial side seal in a partial side seal formation range (X), and in the ink containing pack 200, four partial sides Even when a substantial partial side seal 220a having an area percentage (%) of 8%, for example, is formed in one partial side seal formation range (X) within the seal formation range (X), the ink containing of the present invention Included in the pack. However, in the present invention, preferably, the partial side seals 220a are formed at all four places. As a result, the shape of the ink storage pack 200 after filling the contents can be controlled so as to be symmetrical in the left-right direction and in the front-rear direction, and pulling of the film can be uniformly avoided.
The partial side seal formation range (X) is 1/2 of the total length from the upper end of the front portion 210 and 1/4 of the lateral width from the left and right side ends. When the form of the gusset pouch container which secures the partial compressive strength was examined without restricting the folding width of the gusset 230, if it is the above-mentioned range, the upper deformation by the partial pressure is avoided without reducing the internal volume Because the actual bag breakage is prevented.

On the other hand, in the present invention, the folding depth of the gusset portion 230 is not limited. Since the substantial partial side seal 220a is limited to the heat fusion between the front face 210 and the gusset 230, depending on the folding depth of the gusset 230, as shown in FIG. 2E, the fold line 230a of the gusset 230 Is included in the partial side seal formation range (X). In this case, in the present invention, the partial side seal formation range (X) is the range surrounded by Xy and Xx shown in FIG. 2E, but the fold line 230 of the gusset portion 230 in the partial side seal formation range (X) When 230a is included, only the thermally fused portion formed in the range surrounded by the distances Xx 'and Xy to the fold line 230a becomes the substantial partial side seal 220a. The purpose of the present invention is to control the spread of the gusset by the partial side seal. Therefore, it is efficient to set the maximum width of the partial side seal formation range (X) to the fold line 230a of the gusset portion 230.
By forming the partial side seal 220 a in the partial side seal formation range (X) described above, it is possible to suppress the spread of the gore portion 230, and thus the pressure applied to the gore portion 230 can be efficiently reduced. However, it is thought that the above-mentioned bag breakage can be avoided.
In the ink containing pack 200 of the present invention, the substantial partial side seal 220a heats an area of 8 to 100%, more preferably 10 to 70%, particularly preferably 10 to 50% of the partial side seal formation range (X). It is obtained by fusion. If it is less than 8%, the effect of suppressing the spread of the gore portion 230 due to the formation of the partial side seal may be inferior.

  On the other hand, the substantial partial side seal 220a formed in the partial side seal formation range (X) has a length of 1/10 to 1/2 of the total length of the front portion 210 and a width of 1/1 of the lateral width of the front portion. It is preferably in the range of 12 to 1/4. If it is less than 1/10 of the total length of the front part 210, the increase in the partial compressive strength is not sufficient, while if it exceeds 1⁄2 of the total length, it may be difficult to secure a sufficient internal capacity. In addition, if the width is smaller than 1/12 of the width of the front part 210, the effect of the partial side seal may not be sufficient. On the other hand, if it exceeds 1/4, it may be difficult to secure a sufficient internal capacity. .

In the present invention, the shape of the partial side seal 220a is not particularly limited as long as it is formed in the partial side seal formation range (X) described above. It may be polygonal, circular, or other irregular shape. In this case, the length and width of the substantially partial side seal 220a are substantially the longest longitudinal and lateral lengths of the substantially partial side seal 220a from which the side seal 220 and the calculation upper seal 250 ′ are removed. The length and width of 220a. The substantial partial side seal 220a may be formed by being divided into two or more as long as it is a thermally fused portion existing in the partial side seal formation range (X).
In the present invention, the size of the ink storage pack 200 is not limited, and can be appropriately selected depending on the type of contents, the filling amount, and the like. Hereinafter, for the sake of convenience, the front part 210 is 170 mm in length, 80 mm in width, 26 mm in the folding width of the gusset 230, 6 mm in width at the upper end of the side seal 220, 10 mm in width at the upper end, width at the lower end The shape of the partial side seal 220a will be described with reference to the gusset pouch body (A) in which the bottom seal 240 is formed at 10 mm. In this gusset pouch main body (A), the partial side seal formation range (X) is 85 mm long and 20 mm wide, and the area is 1700 mm ² .
FIG. 2F is a front view of the ink storage pack 200 of the present invention of the above size, which is a partial side 50 mm long and 12 mm wide on both the left and right from the upper end of the front part 210. The seal 220a is shown. Thus, the partial side seal 220a in the present invention can be formed as a rod of uniform width. In FIG. 2F, the partial side seal 220a is formed to overlap with the side seal 220 formed with a width of 6 mm and the upper seal 250 with a width of 10 mm.

  In the present invention, when calculating the area of the substantial part side seal 220 a, the narrowest width (longitudinal) of the upper seal 250 of the ink containing pack 200 and the lateral width (horizontal) of the upper end of the ink containing pack 200 are used as the upper seal 250. The range enclosed in the vertical and horizontal directions is used as the upper seal 250 'for calculation. The range of the calculation upper seal 250 'in the ink containing pack 200 of FIG. 2F is shown in FIG. 2G.

In the ink containing pack 200 of FIG. 2G, the area of the substantial partial side seal 220a obtained by removing the overlap between the side seal 220 and the calculation upper seal 250 ′ from the area of the partial side seal 220a is 40 × 6 = 240 mm ² . There is 14.1% of the area of each partial side seal formation range (X).
FIG. 2H is a front view of the ink storage pack 200 of the present invention of the above size, wherein a partial side seal having a length of 52 mm and a width of 13 mm on both the left and right sides from the upper end of the front part 210. 220a is shown. Similar to FIG. 2F, the partial side seal 220a is formed to overlap with the side seal 220. The difference from FIG. 2G is that the width and length of the partial side seal 220a is larger than that of FIG. 2G, and the corner roundness is large. Because the width is wide, the spread of the gusset 230 can be efficiently suppressed, and the roundness of the corners is large, so that the contents can be moved smoothly.

  In the present invention, since the calculation upper seal 250 'is used as the upper seal 250 when calculating the area of the substantial partial side seal 220a, the range of the calculation upper seal 250' in the ink containing pack 200 of FIG. It is shown in FIG.

In the ink containing pack 200 of FIG. 2I, the area of the substantial partial side seal 220a obtained by removing the overlap between the side seal 220 and the calculation upper seal 250 ′ from the area of the partial side seal 220a is 37 × 7 + (7 × 13 2) about 305 mm ^2, which is 17.9% of the area of each partial side seal formation range (X).
FIG. 2J is a front view of the ink storage pack 200 of the above size according to the present invention, wherein the width 6 mm at a position 70 mm in length from the upper end to the lower end of the front part 210; The partial side seal 220a is inclined so as to have a width of 16 mm at a position of 14 mm, and is heat-sealed by a width of 16 mm above 14 mm from the upper end to the lower end of the front part. Even when the bottom of the gusset pouch container is gripped by the inclination, the contents can be moved smoothly to the pouring port (B) side. Partial side seals 220 a are formed on the left and right of the front portion 210.

  In the present invention, in order to use the upper seal 250 'for calculation as the upper seal 250 when calculating the area of the substantial partial side seal 220a, the range of the upper seal 250' for calculation in the ink containing pack 200 of FIG. It is shown in FIG. 2K.

In the ink containing pack 200 of FIG. 2K, the area of the substantial partial side seal 220a obtained by removing the overlap between the side seal 220 and the calculation upper seal 250 ′ from the area of the partial side seal 220a is 56 × 10 × 2 + 4 × 10. = 320 mm ^2, which is 18.8% of the area of each partial side seal formation range (X).
Further, FIG. 2L is a front view of the ink storage pack 200 of the present invention of the above size, and a partial side seal 220a of 25 mm in length and 13 mm in width is arranged 25 mm from the upper end to the lower end of the front portion 210. It is an aspect formed. The partial side seal is also formed overlapping with the side seal 220 formed to have a width of 6 mm. The partial side seals 220 a are formed on both the left and right of the front portion 210.

  In the present invention, in order to use the upper seal 250 'for calculation as the upper seal 250 when calculating the area of the substantial partial side seal 220a, the range of the upper seal 250' for calculation in the ink containing pack 200 of FIG. It is shown in FIG. 2M.

In the ink containing pack 200 of FIG. 2M, the area of the substantial partial side seal 220a obtained by removing the overlap between the side seal 220 and the calculation upper seal 250 ′ from the area of the partial side seal 220a is about 175 mm ² It is 10.3% of the area of the partial side seal formation range (X).
Furthermore, FIG. 2N is a front view of the ink storage pack 200 of the present invention of the above size, and is an aspect having a partial side seal 220a divided into two in the partial side seal formation range (X) described above. . A second partial side seal 220a of 15 mm long and 13 mm wide is formed at the upper end of the front portion 210, and a 10 mm gap is formed from the first partial side seal, and a second 25 mm long and 13 mm wide It is the aspect in which partial side seal 220a was formed. Partial side seals 220 a are formed on both the left and right of the front portion 210. The first and second partial side seals 220a are formed to overlap with the side seals 220 formed to have a width of 6 mm.

  In the present invention, in order to use the upper seal 250 'for calculation as the upper seal 250 when calculating the area of the substantial partial side seal 220a, the range of the upper seal 250' for calculation in the ink containing pack 200 of FIG. It is shown in FIG. 2P.

In the ink storage pack 200 of FIG. 2P, the area of the substantial partial side seal 220a obtained by removing the overlap between the side seal 220 and the calculation upper seal 250 ′ from the area of the partial side seal 220a is 35 + 175 = 210 mm ² . It is 12.3% of the area of each partial side seal formation range (X).

  In the ink storage pack 200 of the present invention, the side seal 220 and the partial side seal 220a may be formed on the gusset pouch main body (A), and they may be integrally formed even if they are separately formed. It may be done. An aspect in which the partial side seal 220a having the shape shown in FIG. 2H is integrally formed with the side seal 220 is shown in FIG. 2Q. When the partial side seal 220a is integrally formed with the side seal 220, the manufacturing efficiency is excellent in that the partial side seal 220a can also be formed in the step of forming the side seal 220. The partial side seal 220a may have any shape other than that shown in FIG. 2H.

  In the ink storage pack 200 of the present invention, the side seal 220 is a gusset in order to ensure the liquid tightness of the end overlapping portion of the gusseted portion 230 and the front portion 210 which are formed by overlapping heat fusion layers. The part heat-sealed with the same width covering the full length of the upper end to the lower end of a pouch body (A) is said.

  In the ink storage pack 200 of the present invention, the width of the side seal 220 is preferably 4 mm or more.

  In the ink containing pack 200 of the present invention, the shape of the upper seal 250 is not particularly limited. Similar to FIG. 2B, the shape of the upper seal 250 is such that the sealing area is widened at both ends of the bonding portion (Ba) of the spout (B) inserted into the upper open end of the gusset pouch body (A) It is also good. In this case, as shown in FIG. 2R, the seal line 250a forming the inner boundary of the upper seal 250 further has an angle with the fold line 230a on at least one side of the fold line 230a of the gusset 230. It is preferred to cross at 5-80 °. When the fold line 230a of the gusset 230 and the seal line 250a of the upper seal 250 are orthogonal, the pressure is concentrated at the intersecting point P, but the seal line 250a is inclined not perpendicular to the fold line 230a. And such concentration of pressure can be avoided. In the present invention, the inclination angle is preferably 5 to 80 °, preferably 15 to 60 °, and more preferably 30 to 60 °. Within this range, the pressure resistance can be secured, and pinholes and the like due to pressure concentration can be avoided.

  Moreover, in order to secure such an inclination angle, when the bonding portion (Ba) of the spout (B) is inserted into the gusset pouch main body and the upper seal 250 is formed, the gusset portion 230 and the spout (B) It is preferable not to overlap the bonding portion (Ba). Since the upper seal 250 is formed by the linear seal line 250a according to the shape of the spout (B), if the gusseted portion 230 and the spout (B) overlap, it becomes difficult to secure the above-mentioned inclination angle It is from.

The spout (B) is mounted so that its central axis substantially coincides with the central axis of the gusset pouch body (A), and the folding line 230a of the gusset portion 230 of the gusset pouch body (A) is a gusset pouch It is formed in parallel with the central axis of the main body (A).
In the present invention, as shown in FIG. 2R, the spout (B) inserted into the upper open end of the gusset pouch body (A) has a rectangular bonding portion (Ba) with a width Z in a front view at its lower end. doing. For convenience, the upper open end of the gusset pouch body (A),
(I) Width Z of bonded part (Ba) of pouring spout,
(Ii) crease line 230a of the gusset,
(Iii) Divide with the end of the gusset pouch body (A) as the boundary.

In addition, the seal line 250 a of the upper seal 250 corresponds to the above boundary,
(Iv) Distance between end of gusset pouch body (A) and crease line 230a of gusset part: seal line (250a1),
(V) A gap between the crease line 230a of the gusset and the end of the bonding portion (Ba) of the spout: seal line (250a2),
(Vi) Width Z of adhesive part (Ba) of pouring spout: Divide into seal lines (250a3).

  First, in the seal line 250a of the upper seal 250, the seal line 250a3 of the bonded portion (Ba) of the spout (B) is formed perpendicular to the central axis of the spout (Ba).

  On the other hand, seal lines 250a2 formed at both ends thereof are formed between the fold lines 230a of the gusset 230 and the seal lines 250a of the upper seal 250 in the gap between the creases 230a of the gusset and the bonding part (Ba) of the spout. In order to secure an inclination angle of 5 to 80 °, the inclination toward the side seal 220 side is gradually formed toward the bottom of the gusset pouch body (A).

  Furthermore, after the seal line 250a2 secures the inclination angle of 5 to 80 ° at the interval between the end of the gusset pouch main body (A) and the fold line 230a of the gusset, the seal line 250a1 facing the both ends of the front part 210 May be parallel to the upper end of the gusset pouch body (A) toward the side seal 220, and may form a slope toward the side seal 220 side and gradually toward the bottom of the gusset pouch body (A) .

  In FIG. 2R, the seal line 250a2 intersects with the fold line 230a at an inclination angle of 45 °, and the seal line 250a1 is formed parallel to the upper end of the front portion 210.

In the ink storage pack 200 according to the present invention, the intersection of the seal line 250a3 and the seal line 250a2 and the intersection of the seal line 250a2 and the seal line 250a1 may be arc-shaped to smoothly change the direction. Is preferable in that it can suppress
As described above, the bonding portion (Ba) of the spout (B) of the gusset pouch body (A) is inserted and fixed so as not to overlap with the gusset portion 230 in the upper seal 250. When manufacturing such an ink containing pack 200, various shakes (errors) occur due to dimensional error of the apparatus, backlash of the machine, etc. In particular, the adhesive portion (Ba) of the spout (B) is When the displacement of the bonding part (Ba) of the pouring spout (B) at the time of positioning at the top center of the pouch body (A) and the displacement of the fold position due to the meandering when forming the gusset 230 occur to an unignorable extent There is. Therefore, in designing the gusset pouch main body (A), the fold line 230a does not overlap and seal with the bonding portion (Ba) of the spout (B) even if blurring occurs at the time of production thereof. Define the dimensions of each part. As a result, even if the bonding portion (Ba) of the spout (B) and the folding line 230a both deviate in the direction toward each other to the maximum, the folding line 230a may contact one end of the bonding portion (Ba) Also, it does not overlap the bonding part (Ba). In the state where the fold line 230a is in contact with one end of the bonding portion (Ba), the seal line 250a of the upper seal 250 is orthogonal to the fold line 230a, but the opposite seal line 250a is 5 to 5 mentioned above. Since the intersection occurs at an angle of 80 °, this suppresses the stress concentration at the intersection and prevents the occurrence of pinholes and breakage.

The upper seal 250 forming the seal line 250a can be performed using the heat sealing heat plate having the above shape.
In the ink storage pack 200 of the present invention, the intersection of the upper seal 250 and the partial side seal 220a may be formed in an arc shape so as to change the direction smoothly. For example, as shown in FIG. 2S, the seal line 250a of the upper seal 250, in particular, between the end of the gusset pouch body (A) and the fold line 230a of the gusset is formed in a circular arc, You may set it.

Furthermore, as shown in FIG. 2T, the partial side seal 220a and the seal line 250a of the upper seal 250 may be integrated to form an arc shape.
As shown in FIG. 2U, a portion of the upper seal 250 shown in FIG. 2T is included in the partial side seal formation range (X), and the front seal 210 and the gusset portion 230 are heat-sealed by the upper seal 250. ing. The ink storage pack 200 shown in FIG. 2S is a seal line 250a that forms the inner boundary of the upper seal 250 on the ink storage pack 200 in which the side seal 220 and the partial side seal 220a shown in FIG. 2H are formed. However, on at least one side of the fold line 230a of the gusset portion 230, an upper seal 250 is formed which intersects the fold line 230a at an angle of 5 to 80 degrees.

  In the present invention, when calculating the area of the substantial part side seal 220 a, the narrowest width (longitudinal) of the upper seal 250 of the ink containing pack 200 and the lateral width (horizontal) of the upper end of the ink containing pack 200 are used as the upper seal 250. An upper seal 250 'is used to calculate the range surrounded by the vertical and horizontal directions. The range of the calculation upper seal 250 'in the ink containing pack 200 of FIG. 2U is shown in FIG. 2V. The calculation upper seal 250 ′ is a range surrounded vertically and horizontally by the narrowest width (vertical) of the upper seal 250 of the ink containing pack 200 and the width (horizontal) of the upper end of the ink containing pack 200, as shown in FIG. Is the range indicated by reference numeral 250 '. Therefore, as shown in FIG. 2V, in the ink storage pack 200, a part of the upper seal 250 is a partial side seal 220a '. In the ink containing pack 200 shown in FIG. 2V, the shape of the substantial partial side seal 220 a is surrounded by a thick line in the partial side seal formation range (X) on the left side of the front portion 210.

In the ink containing pack 200 of FIG. 2V, the area obtained by removing the overlap between the side seal 220 and the calculation upper seal 250 ′ from the partial side seal 220a is about 304 mm ² , and the portion formed by the upper seal 250 The area of the partial side seal 220a obtained by adding the area of the side seal (220a ') is 9 × 8 = 72 mm ² , and the total area of the substantial partial side seal 220 a is a total of 376 mm ² . It is 22.1% of the area of the formation range (X).

  In the present invention, as a film that can be used for the ink storage pack 200, a heat seal layer is laminated on at least the innermost layer.

More preferably, a gas barrier layer and a polyamide resin layer are laminated on the heat seal layer.
As the heat seal layer, it is possible to use polyolefin resin or the like having various heat seal properties that can be melted by heat and fused together. Specifically, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene -Ethyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-α-olefin copolymer polymerized using metallocene catalyst, polypropylene, ethylene-methyl methacrylate copolymer, ethylene-propylene copolymer Acid-modified polyolefin resins obtained by modifying polyolefin resins such as methyl pentene polymer, polybutene polymer, polyethylene or polypropylene with unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, etc. Vinyl acetate Resins, poly (meth) acrylic resin, one or more films made of a resin such as polyvinyl chloride resin or sheet or coated film and the like can be used.
As the gas barrier layer, various gas barrier substrates capable of limiting oxygen permeability and water vapor permeability can be used. Examples thereof include an aluminum foil, an ethylene-vinyl alcohol copolymer, and a vapor deposition film provided with a vapor deposition film formed by vapor deposition of an organic silicon compound, metal or metal oxide on a base film. In the case of using an aluminum foil, sufficient gas barrier properties can be imparted with a thickness of 6 to 20 μm.

  Also, ethylene / vinyl alcohol copolymer can be suitably used. The thickness of the gas barrier layer made of ethylene / vinyl alcohol copolymer is not limited, but preferably 12 to 25 μm. The ethylene / vinyl alcohol copolymer can be used as a single layer film, but may be a laminated film in which a coating film made of ethylene / vinyl alcohol copolymer is formed on a base film such as polyethylene terephthalate. The coating film made of ethylene / vinyl alcohol copolymer is preferably 0.5 to 3 μm. As such an ethylene-vinyl alcohol copolymer, Kuraray Co., Ltd. make, "Eval EP-F101 (ethylene content; 32 mol%)", Nippon Synthetic Chemical Industry Co., Ltd. make, "Soorol D2908 (ethylene content; 29 mol) %) Etc. can be illustrated.

  Furthermore, a vapor deposition film provided with a vapor deposition film formed by vapor deposition of an organic silicon compound, metal or metal oxide on a base film such as polyethylene terephthalate can be used as a gas barrier layer. The thickness of the vapor deposition layer is suitably in the range of 150 to 2000 Å. A commercial item can also be used suitably, for example, the brand name "IB-PET" by Dainippon Printing Co., Ltd., etc. can be illustrated.

  Moreover, as a base material layer, a polyamide-type resin layer, a polyethylene terephthalate resin layer, etc. can be illustrated. The base material layer is not limited to one layer, and two or more layers may be laminated.

  The polyamide resin layer is laminated to ensure mechanical strength. Preferably, it is a biaxially stretched polyamide film excellent in mechanical strength. For example, it may be an aliphatic polyamide, an aromatic polyamide, or a composition obtained by mixing these. Specific examples of preferred polyamides include polycaproamide (nylon 6), poly-.epsilon.-aminoheptanoic acid (nylon 7), poly-.epsilon.-aminononanoic acid (nylon 9), polyundecanamide (nylon 11), polylaurin Lactam (nylon 12), polyethylenediamine adipamide (nylon 2 · 6), polytetramethylene adipamide (nylon 4 · 6), polyhexamethylene adipamide (nylon 6 · 6), polyhexamethylene sebacamide (Nylon 6 · 10), polyhexamethylene dodecamide (nylon 6 · 12), polyoctamethylene dodecamide (nylon 6 · 12), polyoctamethylene adipamide (nylon 8 · 6), polydecamethylene adipamide (Nylon 10.6), polydecamethylene sebacamide (nylon 10.10), Polydodecamethylene dodecamide (nylon 12.12), metaxylene diamine-6 nylon (MXD6) and the like can be mentioned.

  Further, as the polyethylene terephthalate resin layer, a polyethylene terephthalate resin layer may be used alone, or another resin layer may be laminated. In particular, by laminating the polyethylene terephthalate resin layer as the outermost layer, the left and right sides can be folded inward to insert the gusseted part, and heat sealing of the gusseted part can be avoided when bottom sealing or top sealing is performed. .

  As a laminated film which can be used suitably in the present invention, a suitable thing can be suitably chosen according to use conditions, such as a kind of contents to be filled, and existence of heat processing after filling, and, specifically, outermost layer The following layer configurations can be exemplified from the inner layer to the innermost layer.

(1) Biaxially oriented polyethylene terephthalate film / adhesive / aluminum foil / adhesive / biaxially oriented nylon film / adhesive / polyethylene film,
(2) Biaxially oriented polyethylene terephthalate film / adhesive / biaxially oriented nylon film / adhesive / aluminum foil / adhesive / polyethylene film,
(3) Biaxially oriented polyethylene terephthalate film / adhesive / ethylene-vinyl acetate copolymer saponified film / adhesive / biaxially oriented nylon film / adhesive / PE film,
(4) Biaxially oriented polyethylene terephthalate film / adhesive / uniaxially oriented PP film / adhesive / aluminum foil / adhesive / polypropylene film,
(5) Biaxially oriented polyethylene terephthalate film / adhesive / biaxially stretched nylon film / adhesive / polypropylene film deposited with silica or alumina
(6) IB-PET / adhesive / biaxially stretched nylon film / adhesive / polypropylene film,
(7) IB-PET / adhesive / two axis stretched nylon film / adhesive / linear low density polyethylene film etc. may be mentioned.

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

  By forming a partial side seal 220a at a predetermined position in addition to the side seal 220 of the gusset pouch body (A), the pressure resistance is excellent, and in particular, a biased pressing force is applied to squeeze out from the bottom to the top Also in the case, the ink containing pack 200 can be prevented from being broken. Thereby, it is possible to prevent the leakage of the ink as the contents.

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

  As shown in FIGS. 3A to 3D, in the ink storage pack 300, the substantially rectangular front and rear sheet portions 301 and 302 made of resin film overlap and the resin is placed along the side 303a between the front and rear sheet portions 301 and 302. A gusset sheet portion 304 made of film is inserted in a folded state, and between the front sheet portion 301 and the gusset sheet portion 304 at least on the side 303a and both sides 303b and 303c sandwiching the side 303a, the back sheet 302 and the gusset A heat seal unit 305, 306, 307, 308, 309, 310, 311, 312 is adhered to the sheet 304 and between the front sheet 301 and the rear sheet 302, respectively.

  The resin film is, for example, a laminated film, and although not shown, a non-heat sealing material layer is disposed outside, a heat sealing material layer is disposed inside, and a gas barrier material layer is disposed in the middle. The resin film is desirably formed to be transparent.

  The front and rear sheet portions 301 and 302 are formed, for example, into a substantially rectangular shape having the same shape and size by punching or cutting the resin film. The front and rear sheet portions 301 and 302 are overlapped with the heat seal material layer inside. The gusset sheet portion 304 is formed into a substantially rectangular shape by punching or cutting the resin film. The gusset sheet portion 304 is folded in half with the non-heat seal material layer inside, and is inserted along the one side between the front and rear sheet portions 301 and 302 with the broken line 304 a first. The portion where the front sheet portion 301 and the gusset sheet portion 304 overlap is made the front gusset portion 313 by the insertion of the gusset sheet portion 304, and the portion where the back sheet portion 302 and the gusset sheet portion 304 overlap is the rear gusset portion 314. It is assumed.

  The heat seal parts 305, 306, 307, 308, 309, 310, 311 and 312 are formed by hot pressing the front and rear sheet parts 301 and 302 with the gusset sheet part 304 sandwiched therebetween by a heating plate not shown.

  The heat seal portions 305, 306, 307, 308, 309, and 310 are provided on one side 303a which is the upper side of the ink containing pack 300 and the front and rear gusset parts 313 and 314 on both sides 303b and 303c which are left and right sides of the ink containing pack 300. It is formed at the corresponding place. The heat seal portions 305, 306, 307, 308, 309, 310 close the front and rear gusset portions 313, 314 of the ink containing pack 300. The heat seal parts 311 and 312 are formed at locations other than the front and rear gusset parts 313 and 314 of the side parts 303 b and 303 c which are the left and right sides of the ink containing pack 300. The heat seal portions 311 and 312 close the left and right of the ink storage pack 300.

  As shown in FIG. 3B, the left and right heat seal portions 307, 308, 309, 310, 311, and 312 are divided into gusset portions and non-gusset portions, respectively, but in the non-gusset portions, two resin films overlap. On the other hand, since the four resin films overlap in the gusset, and there is a level difference at the boundary between the non-gusset and the gusset, the heat seal is performed by a wider and larger pressure by a separate heating plate. Is being done.

  The ink container pack 300 is closed by the heat seal portions 305, 306, 307, 308, 309, 310, 311, and 312 and the lower side is unsealed and opened, and the contents are contents from the opening of the lower side. Although it is possible to fill the ink and then close the lower side with a heat seal portion, in this embodiment, as shown in FIGS. 3A and 3B, the outlet / outlet portion 315 is a heat seal portion 316 at the lower side. It is adhered to the parts 301 and 302. The pouring spout portion 315 has a known structure, and thus the detailed description is omitted.

  A hanging hole 317 penetrating the front and rear gusset portions 313 and 314 is formed in the heat seal portions 305 and 306 on the upper side. The ink containing pack 300 is suspended at a desired location by passing a hook (not shown) through the suspension holes 317, and the content ink is poured out.

  Further, the ink containing pack 300 is provided with an easy opening means. That is, the front sheet portion 301 is formed along with the gusset sheet portion 304 so that the extending direction extends along one side 303 a which is the upper side, and the above side is away from the inner edge of the heat seal portion 305 opposite to the heat seal portion. Notches 321a and 321b are formed at locations where a straight line 320 indicated by a two-dot chain line extending along 303a intersects the both sides 303b and 303c. A tear line is set by these notches 321a and 321b. The notches 321a and 321b are formed in a narrow groove shape so as to penetrate the gusset sheet portion 304 and the front sheet portion 301 of the front gusset portion 313 in the thickness direction, but have desired shapes such as V groove shape and semicircular shape. It is possible.

  The above laminated film is used for the front sheet portion 301 and the gusset sheet portion 304. For example, the outer non-heat seal material layer of the laminated film is formed of a stretched film. The front sheet portion 301 and the gusset sheet portion 304 are cut out from the laminated film so that the stretching direction of the stretched film extends between the both sides 303 b and 303 c of the ink storage pack 300, that is, in the left and right direction.

  As shown in FIGS. 3A and 3C, the periphery of the notch 321a formed at the end of the straight line 320 is a non-heat seal area 322. By maintaining the extensibility of the non-heat-sealed area 322, tearing can be facilitated even when the notch 321a is not formed or when the notch is short.

  The straight line 320 indicated by the two-dot chain line is parallel to the stretching direction of the resin film constituting each of the front sheet portion 301 and the gusset sheet portion 304, so the front sheet portion 301 and the gusset sheet portion 304 are on the straight line 320. Resin film can be easily torn. Since the straight line 320 passes from the inner edge of the heat seal part 305 to a point on the opposite side to the heat seal part 305, when the heat seal part 305 is torn along the straight line 320, the ink containing pack 300 is unsealed.

  As shown in FIG. 3A, FIG. 3C and FIG. 3E, the seal edges 318 and 319 of the heat seal portions 307, 308, 309 and 310 on both sides 303b and 303c of the ink containing pack 300 An intersecting intersection is detoured in an arc shape, whereby a substantially semicircular non-sealed portion 324, 325 is formed around the intersection. For this reason, a force is applied from the outside to the ink containing pack 300 filled with the ink which is the content, or the ink containing pack 300 falls, and the water hammer by the ink acts on the front and rear gusset parts 313, 314. Also, the stress that tends to concentrate at the intersections of the seal edges 318 and 319 and the broken line 304a is dispersed, so that the occurrence of a bag and a pinhole in the gusset portion of the ink containing pack 300 is prevented.

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

  The ink containing pack 300 containing the ink is transported in a state where a large number of things are stacked. During transportation, load and vibration due to stacking are applied to the front and back gusset parts 313 and 314 of the ink storage pack 300, and when the ink storage pack 300 falls on the floor, a water hammer acts on the front and back gusset parts 313 and 314. At the intersection where the seal edges 318 and 319 of the heat seal portions 307, 308, 309 and 310 on both sides of the ink containing pack 300 intersect the broken line 304a of the gusset sheet portion 304, substantially semicircular non-sealed portions 324 and 325 are present. Because it is formed, stress that tends to concentrate at the intersection of the seal edges 318 and 319 and the polygonal line 304a is dispersed. Therefore, the occurrence of the bag breakage and the pin hole in the front and rear gusset portions 313 and 314 of the ink containing pack 300 is prevented. This can prevent ink leakage and the like.

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

  As shown in FIGS. 4A and 4B, the ink storage pack 400 blow-molds a synthetic resin bag body 411 including a body portion 412 and a bottom portion 413 into a three-dimensional shape (three-dimensional shape). The bag main body 411 is made foldable at the stage before the filling of the agent (ink).

  In the ink containing pack 400, a wide opening extending across or near the full width of the upper edge of the body 412 of the bag main body 411 can be used as the filling port 412A for the content agent. The filling port 412A becomes a sealed portion 412B which is pressurized and sealed by the seal bar so as to be heat-sealed or ultrasonic-sealed after the content agent is filled.

  The ink containing pack 400 can form the spout 414 in a part of the upper edge side of the body portion 412 when the bag body 411 is blow-molded. The spout 414 is opened by cutting.

  In the ink containing pack 400, the folded form of the bag body 411 can be obtained by superposing the bottom portion 413 on the body portion 412 as in the following (a) or (b).

  (A) A configuration in which the body portion 412 is flattened and the flat bottom portion 413 is bent with respect to the lower portion of the body portion 412.

  (B) A configuration in which the bottom portion 413 is formed into a dome shape, and the center portion of the bottom portion 413 is folded along the parting line of the blow molding die to the inside of the body 412 to make the body 412 flat.

  Here, the ink storage pack 400 can be manufactured by direct blow molding. In direct blow molding, the parison is extruded and blown circumferentially into the interior of the parison to form the bag body 411. Direct blow molding forms a bag body 411 consisting of a single layer or a laminated resin layer. As a resin material of the bag body 411 by direct blow molding, in the case of a single layer, LDPE (low density polyethylene) or L-LDPE (linear low density polyethylene) can be adopted, and in the case of lamination, the outer layer is HDPE (high density polyethylene) And the inner layer may be LDPE or L-LDPE.

  Further, the ink containing pack 400 is formed on the outer surface of the portion to be fused 421 which will form the sealed portion 412B sealed by pressing at least the filling port 412A by the seal bar as described above in the bag body 411. A material having a melting point higher than that of the component resin material (for example, LDPE or L-LDPE described above) of the fusion planned portion 421 (for example, PP (polypropylene) or PET (polyethylene terephthalate) having a melting point higher than PE) ) Is attached.

  The label 422 can be attached to the fusion planned portion 421 as an in-mold label at the time of blow molding of the bag body 411, or can be retrofitted as a tack label after blow molding of the bag body 411. The label 422 has an ethylene-vinyl acetate copolymer, an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, a styrene-butadiene-styrene block polymer, a styrene-ethylene copolymer on the adhesion surface with the fusion planned portion 421. · On the outer surface of the portion to be fused 421 via the adhesive layer 423 in a state of being previously coated with an adhesive layer 423 (see FIG. 4C) such as butylene-styrene block polymer or styrene-isobrene-styrene block polymer It is adhered and attached.

  The label 422 is attached to the outer surface (both outer surface of the front and back of the bag main body 411) of the fusion planned portion 421 which will form at least the seal portion 412B of the filling port 412A, and heat seals or ultrasonically seals the seal portion 412B. It prevents the molten resin of the to-be-fused portion 421 from adhering to the seal bar.

  The label 422 may be attached to a wide outer surface such as the entire surface including the filling port 412A of the bag body 411 (both outer surfaces of the front and back of the bag body 411), which contributes to securing the rigidity of the bag body 411 and securing the light shielding property. Do.

  The ink containing pack 400 is suitable for a container containing an ink as a content agent.

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

In the ink containing pack 400, a label 422 made of a material having a melting point higher than that of the constituent resin of the portion to be fused 421 is attached to the outer surface of the portion to be fused 421 for sealing the filling port 412A of the bag body 411. Accordingly, the seal bar of the heat seal or the ultrasonic seal pressurizes the portion to be fused 421 via the label 422, and the molten resin of the portion to be fused 421 does not adhere to the seal bar. For this reason, the appearance and sealing performance of the seal portion 412B in the bag main body 411 are not impaired, and the appearance and sealing performance of those can be improved.
Further, the body portion 412 and the bottom portion 413 of the bag main body 411 are integrally formed, so that they are strong against a drop impact and are not easily broken. Therefore, the leakage of ink can be prevented. In addition, by improving the rigidity of the bag body 411, it is possible to suppress the choke (choke) at the central portion of the ink storage pack 400 when the ink is supplied to the cartridge 50. Thus, the ink stored on the bottom side of the ink storage pack 400 can be efficiently discharged.

Moreover, since the spout 414 formed in the bag body 411 is three-dimensionally shaped at the time of blow molding of the bag body 411, it is difficult to close.
In addition, the spout 414 formed in the bag body 411 is within a range of 0 degrees to 90 degrees, preferably 30 degrees to 60 degrees, preferably 45 degrees with respect to the horizontal direction parallel to the bottom portion 413 of the bag body 411 It is easy to pour out by tilting it. Therefore, the pouring posture is stabilized, and ink dripping can be prevented.

Fifth Embodiment
Next, a fifth embodiment will be described.
5A to 5F are schematic views showing the configuration of the ink containing pack.

  As shown in FIG. 5A, the ink storage pack 500 includes a pair of opposing flat portions 511 and 511 that form the front and back sides of the bag, and fold lines 523 and 523 folded in a folding manner inside the bag. And a cylindrical bag body 510 open at both ends. The cylindrical bag main body 510 may be generally formed by bonding using a packaging material of the same material, or may be formed by a so-called double palm bonding method.

  In the bag body portion 510 thus formed, the folding angles θ1 are formed on the two side surfaces 521 and 521 by the folding lines 523 and 523. The folding angle θ1 is maintained within 180 degrees. However, in some cases it is also possible to completely open the two sides 521, 521.

  Next, as shown in FIG. 5B, at one opening of the bag body 510, each of the fold lines 523 of the two side surfaces 521, 521 takes an arbitrary and mutually opposing point P, P 'as a base point, By folding the fold lines 523 and 523 from the points P and P 'to one end of the respective fold lines 523 and 523 to the outside of the side faces 521 and 521, respectively, and pushing and expanding one opening of the bag body 510 A square bottom open surface 525 as shown in FIG. 5C is formed.

  On the other hand, as shown to FIG. 5C, the square-shaped flat bottom part formation sheet 530 is prepared, and this bottom part formation sheet 530 and the above-mentioned bottom part open surface 525 are piled up.

  The heat plate is pressed so that the periphery of the bottom forming sheet 530 and the bottom open surface 525 in a state of being stacked in this manner is sealed in a so-called four-way manner, as shown in FIG. The peripheral edge and the bottom portion forming sheet 530 are heat sealed (heat seal). In FIG. 5D, the heat-sealed portion is indicated by hatching. This heat fusion is usually performed by side heat sealing of the bag body 510.

  A state in which the ink storage pack 500 manufactured in this manner is inverted and the inside thereof is spread and made to stand is shown in FIG. 5E.

  In order to store the contents (ink) in the ink storage pack 500, the contents are usually filled from the opening of the bag in an open state, and then the opening is heat-sealed or a pouring member Or attach the Also, the opening may be left as it is, or it may be used as a mere bag as shown in FIG. 5E, omitting the heat sealing or attachment of the pouring member. Furthermore, bottom opening faces 525 are formed in the openings at both ends, and a flat square bottom part forming sheet is heat-sealed on each bottom opening face 525 to form a four-sided seal, and for example, it is poured into one flat part 511 It is also possible to provide a foldable bag-in-box bag by providing an outlet and attaching a suitable pouring device to this outlet.

  The tubular bag main body 510 as shown in FIG. 5A is provided with the flat sheet 541, 541 and the folding lines 553, 553 folded inward in the form of a fold as shown in FIG. 5F. The two side sheets 561 and 561 formed in may be bonded and formed so as to face each other. In that case, for example, the materials of the flat sheet 541 and the side sheet 561 can be appropriately changed.

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

  In the ink storage pack 500, a bottom open surface 525 is formed in at least one opening of the cylindrical bag main body 510, and the flat bottom forming sheet 530 is superimposed on the bottom open surface 525, and both are sealed at the periphery As the back portion does not exist in the bottom forming sheet 530, and such a crossing point of the back portion of the bag body 510 and the bottom forming sheet 530 does not occur. There is no problem that pinholes or wrinkles occur and sometimes the ink may leak from that portion. In addition, no stress concentration portion is generated, and the impact resistance in dropping or the like is excellent, and the self-supporting property is also excellent.

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

  As shown in FIG. 6A, the ink containing pack 600 has a wedge-shaped bottom seal shape. That is, the rod-like extension portions 607H are provided on both upper ends of the bottom seal 605H having a hook shape. By providing the extension portion 607H, even if the film is meandered or the cut position is displaced, it is possible to prevent the formation of an acute angle at the stress concentration portions at both ends of the inner portion of the pouch. Was found to be effective in preventing bag breakage. The width of the extension portion 607H may be equal to the width of the side seal of the pouch, and the length thereof is 5 to 20 mm from the tip of the fold of the bottom material folded in two and inserted between the front and back members. It is good if the upper side is reached. Further, the shape of the extension portion 607H is not limited to a bar.

  In addition, when making the ink storage pack 600 into a bag by using the wedge-shaped bottom seal 605H of the above-mentioned shape, it is possible to omit the point seal which is conventionally a post process, and shorten the overall length as a bag making machine. It became possible.

  The ink storage pack 600 often uses ink as its content, and a relatively thick film (laminated body) is used to ensure the strength as the pouch, but the front and back material and the doubled bottom material At the boundary between the four-sheet component where the two pieces overlap and the two-component component of only the front and back members, the seal omission (tunneling phenomenon) occurs at the top of the two fold due to the return immediately after heat sealing of the double-folded bottom material. There is. Heretofore, as a measure against return immediately after the heat seal, a point seal has been made on a portion which is likely to come off the seal. Therefore, in the heat seal type of the bottom seal shape of the wedge shape in the present invention, by making the seal surface of the rod-like extension portion 607H slightly protrude from the other surface, the crimping strength at the time of sealing is increased, It is possible to prevent the occurrence of the tunnel phenomenon at the boundary between the upper end of the bottom film and the side seal portion thereon. As shown in FIGS. 6E to 6H, the extension portion 607H is in the range of 1 to 10 mm above and below the fold 604T of the bottom material of the pouch, that is, 2 to 20 mm in length. If the length is less than 2 mm, the meandering of the film may cause deviation from the required pressure site. Moreover, the effect does not change even if it is provided in a length exceeding 20 mm. Further, as shown in FIGS. 6E to 6G, the shape of the protrusion may be parallel to the heat seal surface, may be inclined, or may be arc-shaped, or a combination thereof. It may be The height of the bar-like extension portion 607H is preferably 1.5 mm or less with respect to the other heat sealing surface. If the height is 1.5 mm or more, the film may be thinned by the pressure of the heat seal, and the seal may be broken.

  The material of the ink storage pack 600 of the present invention is designed in consideration of the type of contents, capacity, distribution method, and the like. In general, the material used is a material such as plastic film, paper, metal foil or the like, or these materials coated with other materials for the purpose of improving physical properties, processed by vapor deposition or the like, It is used as each single film or the laminated body which laminated these.

  Then, as shown in FIGS. 6I to 6K, extensions 607 are formed on the tops of the inclined seals 605k on both sides of the bottom seal of the wedge shape.

  As a basic material configuration of the laminate 620 forming the ink storage pack 600 of the present invention, as shown in FIG. 6L, it is composed of a base material layer 621, a barrier layer 622, and a heat seal layer 623. The base layer 621 is selected from materials having printability, strength, heat resistance and the like, and preferably a stretched film formed by forming a resin such as various thin paper, polypropylene, polyester, and polyamide. In addition, as the barrier layer 622, a metal foil such as aluminum, a polyacrylonitrile having a barrier property, a film obtained by forming a saponified product of polyvinyl alcohol or ethylene-vinyl acetate copolymer, a barrier coat such as vinylidene chloride on various films Or a film obtained by forming a vapor-deposited film showing a barrier property on various films. As the heat seal layer 623, a material which does not have a possibility of affecting the quality of the contents etc. and which can obtain the necessary heat seal strength as a pouch is selected. For example, low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, linear low density polyethylene, α-olefin copolymer polymerized using a single site catalyst, ionomer, ethylene-vinyl acetate copolymer, etc. are used. Be The material forming the heat seal layer 623 has heat sealability between the inner surfaces, and in the case where the outlet is attached to the edge of the pouch, select one that exhibits heat sealability to the material of the outlet as well. Do.

  In addition, as the material configuration of the pouch, each layer of the base material layer 621, the barrier layer 622, and the heat seal layer 623 may be multilayered, or as shown in FIG. 6M, the intermediate layer 624 may be formed in addition to the above three layers. Good. For example, the base layer 621 is a laminate film of polyester film and nylon film, or an intermediate layer 624 is provided between the barrier layer and the heat seal layer for reinforcement, and the layer configuration of the laminate 620 (602) is A four-layer structure consisting of the base layer 621, the barrier layer 622, the intermediate layer 624, and the heat seal layer 623 can also be used.

  Before forming the ink storage pack 600 of the present invention, the back members 602 and 603 and the bottom member 604 may use a laminate having the same layer configuration, or may use a laminate having different layer configurations. Good. In order to facilitate the formation of the bottom as the ink containing pack 600 and to improve the self-supporting property, it is preferable that the front and back members 602 and 603 have rigidity and the bottom member 604 be a soft laminate. .

  As the lamination of the base layer 621 forming the laminate 620, the barrier layer 622, and the heat seal layer 623, methods such as extrusion lamination, dry lamination, sandwich lamination, thermal lamination and the like can be used. For example, composite film PET12 / AL9 / ON15 / S-PE50 {abbreviated name PET: stretched polyester, AL: aluminum foil, ON: stretched nylon, S-PE: α polymerized using a single site catalyst. · Olefin copolymer, numbers after the abbreviation indicate thickness μm} As a lamination method, lamination of PET and AL, AL and ON is dry lamination, lamination of ON and S-PE is LDPE 20 The method of laminating | stacking by the sandwich lamination used as adhesive resin is mentioned. The constitution of the laminate obtained by this method is represented by an abbreviation: PET12 / DL / AL9 / DL / ON15 / LDPE20 / S-PE50 {abbreviation DL: dry laminate, LDPE: low density polyethylene}.

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

  By forming the extensions 607 on the top of the inclined seals 605k on both sides of the bottom seal 605H of the wedge shape, even if the film meanders or the shift of the cutting position occurs, the stress concentration at the stress concentration on both ends of the pouch It can be prevented from being formed. As a result, an effect of preventing the tearing of the ink storage pack 600 due to a drop impact can be obtained. And, the leakage of the ink can be prevented.

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, in the ink container pack 700, the contents (ink) 702 are sealed and packaged by a paper container 703.

  The paper container 703 is formed by bending a blank plate 710 (see FIG. 7B) into a box shape of a Gebel top type, and a trunk portion 706 is provided below the inclined roof portion 705. To the inclined roof portion 705 is attached a dispenser 704 for a resin molded product having a cylindrical portion (not shown) and a cap 704a. The cylindrical portion is thermally bonded to the inclined roof portion 705 to form a spout, and the cap 704a is screwed to the cylindrical portion to seal the spout. The cap 704 a is removed and the contents 702 are poured out of the paper container 703.

  A window 708 extending from the top to the bottom of the paper container 703 is formed on one surface of the body 706. The remaining amount of the contents 702 in the paper container 703 can be visually recognized through the window 708. In the figure, the window portion 708 is provided on the left side when the pouring device 704 is viewed from the front, but may be provided on the right side, the back or the front.

  FIG. 7B shows an exploded view of a blank plate 710 forming a paper container 703. In the blank plate 710, a plurality of rectangular side plates 712a, 712b, 712c, and 712d forming the trunk portion 706 (see FIG. 7A) are provided in parallel in one direction via the fold line 711. A window 708 is provided on one side plate 712 b.

  Inclined roof portion forming plates 713a, 713b, 713c, and 713d, which form the inclined roof portion 705, are provided above the side plates 712a to 712d via the fold line 711. In the inclined roof portion forming plates 713a to 713d, a fold 711 is provided at a predetermined position so as to seal the upper side of the trunk portion 706. One inclined roof portion forming plate 713c is provided with a through hole 707 for attaching a cylindrical portion (not shown) of the dispensing tool 704 (see FIG. 7A).

  Bottom plates 714a, 714b, 714c, and 714d, which form the bottom of the paper container 703, are provided below the side plates 712a to 712d, respectively, via the fold lines 711. A fold 711 is provided at a predetermined position in the bottom plates 714a to 714d so as to seal the lower side of the body 706.

  Further, an adhesive margin piece 715 is provided on the side of the inclined roof portion forming plate 713d, the side plate 712d and the bottom plate 714d. A box-shaped paper container 703 is formed by bending the blank plate 710 at the folds 711 and thermally bonding predetermined positions of the glue strip 715, the side plates 712a to 712d, and the bottom plates 714a to 714d.

  FIG. 7C shows a cross-sectional view on the window 708 of the blank plate 710. The blank plate 710 is formed of a laminate in which an interior material 730 made of a multilayer film is laminated on the entire inner surface of the paper base layer 720 via a urethane or acrylic adhesive (not shown). The window 708 is formed by covering the hole 708 a provided in the paper base layer 720 with the interior material 730. A polyimide anchor coating agent may be printed on the inner surface side of the paper base layer 720. Thereby, the adhesion between the paper base layer 720 and the adhesive can be improved.

The paper base layer 720 is formed of double-sided polyethylene coated paper in which coat layers 723 and 724 made of polyethylene film are disposed on both sides of the paper layer 722. The basis weight of the paper layer 722 is, for example, 250 g / m ² . The coat layer 723 on the outer surface of the paper layer 722 is formed to a thickness of, for example, 20 μm, and the coat layer 724 on the inner surface is formed to a thickness of, for example, 15 μm. A symbol such as a trade name is formed on the outer surface of the paper base layer 720 by UV offset printing or the like.

  The interior material 730 includes a polyamide layer 731, a barrier layer 732, a polyester layer 733, and a polyethylene layer 734 in this order from the outer surface side. The polyamide layer 731 is formed of, for example, a drawn nylon (ONY) film having a thickness of 15 μm. The polyamide layer 731 can improve the puncture resistance of the window portion 708.

  The polyester layer 733 is formed of, for example, a polyethylene terephthalate (PET) film having a thickness of 12 μm. The barrier layer 732 is formed by depositing silica, aluminum or the like on one surface of the polyester layer 733. The polyester layer 733 in which the barrier layer 732 is formed is adhered to the polyamide layer 731 by an adhesive (not shown). In addition, the barrier layer 732 can increase the gas barrier property, and oxygen and water vapor can be prevented from entering the paper container 703.

  The polyethylene layer 734 is formed of, for example, a polyethylene film having a thickness of 60 μm, and is laminated to the polyester layer 733 by an adhesive or extrusion lamination. In bending the blank plate 710 to form the paper container 703, the polyethylene layer 734 is thermally bonded to the opposing polyethylene layer 734 and the coat layer 723 of the paper base layer 720. Thus, the coat layer 723 and the polyethylene layer 734 form a thermal adhesive layer.

  The ink storage pack 700 configured as described above is attached to a paper container 703 formed in a box shape whose upper surface is opened by the bending of the blank plate 710 with the cylindrical portion (not shown) of the dispenser 704 attached. Next, after the paper container 703 is filled with the contents 702, the paper container 703 is sealed by heat bonding the upper surface. At this time, the contents 702 are filled in the paper container 703, and after sealing, the inside of the paper container 703 is decompressed by natural cooling. That is, the ink container pack 700 uses the paper container 703 to seal and package the contents 702 in a reduced pressure state, and distributes it as a product.

  FIG. 7D shows a left side view of the upper portion including the window portion 708 of the ink containing pack 700. FIG. With the ink containing pack 700 in a sealed state, the liquid level H 1 of the contents 702 is disposed above the upper end of the window 708.

  In the ink container pack 700, peeling of the thermal adhesive layer (coat layer 723, polyethylene layer 734) or pinholes of the thermal adhesive portion of the dispenser 704 during the circulation process, or the interior material during thermal adhesion after content filling Pin holes may occur at 730. In addition, there is a case in which it is detected that the piercing hole is formed in the paper container 703 by a needle or the like, or a case in which a foreign material is mixed in the paper container 703 by a syringe or the like.

  In these cases, when the sealed state of the paper container 703 is released, the liquid level H1 of the contents 702 is lowered by the atmospheric pressure, and the liquid level H2 after lowered is disposed in the window portion 708. A product provider or purchaser can visually recognize the liquid level H2 through the window 708 and detect the unsealing of the paper container 703. In other words, if the content 702 holds the liquid level H1, it can be easily confirmed that the sealability of the ink storage pack 700 is secured.

  As a result, it is possible to easily recover and stop the use of the ink containing pack 700 which may cause deterioration or contamination of the contents 702. Therefore, the security of the ink storage pack 700 can be improved, and the cost for recovery can be reduced.

  According to the present embodiment, when the paper container 703 is released from the sealed state by pin holes or peeling of thermal adhesion, the liquid level H2 after being dropped by the atmospheric pressure of the contents 702 is disposed in the window portion 708. Ru. As a result, the liquid level drop of the contents 702 can be visually recognized through the window 708, and the unsealing of the paper container 703 can be easily detected.

  Further, since the liquid level H1 of the contents 702 is disposed above the upper end of the window portion 708 in a sealed state of the paper container 703, the liquid level drop can be easily grasped by visual recognition of the liquid level H2. The liquid level H 1 of the contents 702 may coincide with the upper end of the window 708 in a sealed state of the paper container 703.

  Further, since the window portion 708 extends vertically and is provided from the upper portion to the lower portion of the paper container 703, the sealing release of the paper container 703 can be detected and the remaining amount of the contents 702 can be visually recognized. A plurality of windows 708 may be divided and provided from the upper part to the lower part of the paper container 703.

  Next, another ink storage pack 700a will be described. The ink storage pack 700a has the same paper container 703 and contents 702 as in the above embodiment, and the position of the liquid level H1 of the contents 702 is different from that in the above embodiment.

  FIG. 7E shows a left side view of the upper portion including the window portion 708 of the ink containing pack 700a. For convenience of explanation, the same parts as those in FIG. 7D described above are given the same reference numerals. With the ink containing pack 700 a in a sealed state, the liquid level H 1 of the contents 702 is disposed below the upper end of the window 708. Further, the paper container 703 is provided with a marking 709 indicating the position of the liquid level H1 adjacent to the window portion 708. The marking 709 may be provided on the window portion 708.

  When the sealed state of the paper container 703 is released, the liquid level H1 of the contents 702 is lowered by the atmospheric pressure, and the liquid level H2 after being lowered is disposed in the window portion 708. A product provider or purchaser can visually recognize the liquid level H2 through the window 708, and can detect the unsealing of the paper container 703 by comparison with the marking 709.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the marking 709 indicating the liquid level H1 disposed below the upper end of the window 708 in the sealed state of the paper container 703 is provided, the marking 709 and the liquid level H2 are compared to compare the liquid level of the contents 702 You can easily grasp the descent.

  Since the liquid levels H1 and H2 are different in distance from the upper end of the window portion 708, the liquid level drop can be grasped even if the marking 709 is omitted. Therefore, although the marking 709 may be omitted, the provision of the marking 709 is more desirable because the liquid level H2 can be easily detected by comparison with the marking 709.

  Next, another ink storage pack 700b will be described. The ink storage pack 700b has the same paper container 703 and contents 702 as in the above embodiment, and the layer configuration of the paper container 703 is different from that in the above embodiment.

  FIG. 7F shows a cross-sectional view on the window 708 of the blank plate 710 that forms the paper container 703. For convenience of explanation, the same parts as those in FIG. 7C described above are given the same reference numerals. The blank board 710 is formed of a laminate in which an interior material 730 made of a multilayer film is laminated on the entire surface of the paper base layer 720. The window portion 708 is formed by covering the inner surface side of the hole portion 708 a provided in the paper base layer 720 and the interior material 730 by the cover member 740.

  The paper base layer 720 is formed of single-sided polyethylene coated paper in which a coat layer 723 made of polyethylene film is laminated on the outer surface of the paper layer 722. A symbol such as a trade name is formed on the outer surface of the paper base layer 720 by UV offset printing or the like.

  In the interior material 730, a barrier layer 732, a polyester layer 733, and a polyethylene layer 734 are disposed in order from the outer surface side. Similar to the above, the polyester layer 733 is formed of a polyethylene terephthalate film or the like. The barrier layer 732 is formed by vapor deposition of silica, aluminum or the like on one surface of the polyester layer 733, and has gas barrier properties. The polyethylene layer 734 is formed of a polyethylene film and is adhered to the polyester layer 733 by an adhesive (not shown).

  In addition, the paper base layer 720 and the interior material 730 are extruded and sand-laminated by an adhesive layer 751 made of polyethylene or ethylene / methacrylic acid copolymer resin (EMAA).

  In the cover material 740, a polyethylene layer 741, adhesive layers 742, 743, a barrier layer 744, a polyester layer 745, a polyamide layer 746, and a polyester layer 747 are disposed in order from the outer surface. The polyethylene layer 741 is made of polyethylene film and is thermally bonded to the polyethylene layer 734 of the interior material 730.

  The polyester layer 745, the polyamide layer 746 and the polyester layer 747 are formed by a coextruded film. The polyamide layer 746 is formed of, for example, a stretched nylon film, and improves the puncture resistance of the window 708. The polyester layers 745 and 747 are formed of a polyethylene terephthalate film or the like. The barrier layer 744 is formed by vapor deposition of silica, aluminum or the like on one surface of the polyester layer 745, and has gas barrier properties.

  The adhesive layer 742 is made of polyethylene, and the adhesive layer 743 is made of ethylene-methacrylic acid copolymer resin. The coextruded film having the polyester layer 745, the polyamide layer 746 and the polyester layer 747 and the polyethylene layer 741 are extruded and sand laminated by coextrusion of the adhesive layers 742 and 743. Thus, the cover material 740 is formed of a laminated material in which a plurality of films are laminated without an organic solvent adhesive or an anchor agent. Therefore, the safety of the contents 702 in contact with the circumferential surface of the cover material 740 can be improved, and the delamination of the cover material 740 due to the contents 702 can be prevented.

  The blank board 710 having the above configuration is bent to form a paper container 703, and the liquid level H2 of the contents 702 and the remaining amount of the contents 702 can be visually recognized through the window portion 708.

  The polyester layer 745 may be omitted and the barrier layer 744 may be formed on the polyamide layer 746. When the thickness of the polyester layer 747 is large and the puncture resistance is high, the polyester layer 745 and the polyamide layer 746 may be omitted, and the barrier layer 744 may be formed on the polyester layer 747.

  According to this embodiment, the same effect as that of the above embodiment can be obtained. In addition, the cover material 740 is formed by extrusion sand lamination of a plurality of films 741, 745, 746, 747 without an adhesive or an anchor agent. Thus, the safety of the contents 702 in contact with the circumferential surface of the cover 740 can be improved, and the delamination of the cover 740 due to the contents 702 can be prevented. A paper container 703 having a layer configuration similar to that of this embodiment may be used for the ink storage pack 700a.

  Next, another ink storage pack 700c will be described. The present embodiment has the same paper container 703 and contents 702 as the above embodiment, and the layer configuration of the paper container 703 is different from the above embodiment.

  FIG. 7G shows a cross-sectional view on the window 708 of the blank plate 710 that forms the paper container 703. For convenience of explanation, the same parts as those in FIG. 7C described above are given the same reference numerals. The blank board 710 is formed of a laminate in which an interior material 730 made of a multilayer film is laminated on the entire inner surface of the paper base layer 720 and an exterior material 760 is laminated on the entire outer surface. The window 708 is formed by covering the hole 708 a provided in the paper base layer 720 with the interior material 730 and the exterior material 760.

  The paper base layer 720 is formed of single-sided polyethylene coated paper in which a coat layer 723 made of polyethylene film is laminated on the outer surface of the paper layer 722. A pattern such as a trade name is formed on the outer surface of the paper base layer 720 by gravure printing or the like. The covering material 760 is formed of a polyethylene film and is laminated on the paper base layer 720 by extrusion lamination.

  In the interior material 730, a barrier layer 732, a polyester layer 733, an adhesive layer 735, a polyamide layer 736, an adhesive layer 737, and a polyethylene layer 738 are disposed in order from the outer surface side. Similar to the above, the polyester layer 733 is formed of a polyethylene terephthalate film or the like. The barrier layer 732 is formed by vapor deposition of silica, aluminum or the like on one surface of the polyester layer 733, and has gas barrier properties.

  The polyamide layer 736 is formed of, for example, a stretched nylon film having a thickness of 15 μm, to increase the puncture resistance of the window 708. The polyethylene layer 738 is formed of, for example, a polyethylene film having a thickness of 60 μm.

  The film of the polyester layer 733 having the barrier layer 732, the film of the polyamide layer 736 and the film of the polyethylene layer 738 are extruded and sand-laminated through the adhesive layers 735 and 737 made of polyethylene or ethylene / methacrylic acid copolymer resin. Ru.

  In addition, the paper base layer 720 and the interior material 730 are extruded and laminated by an adhesive layer 751 made of polyethylene or ethylene / methacrylic acid copolymer resin. Note that the adhesive layer 751 and the exterior material 760 may be joined through the hole 708a.

  The paper board 703 is formed by bending the blank board 710 having the above-described structure and thermally bonding the heat adhesive layer consisting of the exterior material 760 and the polyethylene layer 738. Then, the liquid level H2 of the contents 702 and the remaining amount of the contents 702 can be visually recognized through the window portion 708.

  According to this embodiment, the same effect as that of the above embodiment can be obtained. Also, the paper container 703 having the same layer configuration as that of the present embodiment may be used for the ink storage pack 700a.

  In the ink storage packs 700, 700a, 700b, and 700c of the above-described embodiment, a shrink pack may be provided to cover the paper container 703 with a transparent film. At this time, when it is detected that the piercing hole by the needle etc. is formed in the paper container 703, since the sealing release of the paper container 703 can be detected by visual recognition of the liquid level H2, the sealed state can be inspected without peeling the shrink pack. . Therefore, the cost reduction effect concerning recovery becomes larger.

  Moreover, although the ink containing pack 700, 700a, 700b, 700c of the said embodiment has provided the pouring-out tool 704 in the paper container 703 of the goebel top type | mold, the pouring-out tool 704 may not be mounted, brick type or others The paper container 703 may be in the shape of

  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 has high sealing performance, the occurrence of ink leakage in the printer 2 does not occur, and the ink can be stably replenished from the ink storage pack 100.
Alternatively, the ink storage pack 100 may supply ink to the cartridge 50 through a flexible tube or the like. Even in this case, there is no leakage of the ink from the ink storage pack 100, and 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.
The same can be applied to the ink containing packs 200, 300, 400, 500, 600, 700, 700a, 700b, and 700c according to the other embodiments.

  DESCRIPTION OF SYMBOLS 1 ... printing system, 2 ... printer, 26 ... head, 50 ... cartridge, 51 ... housing | casing, 61 ... ink containing part, 100, 200, 300, 400, 500, 600, 700, 700, 700a, 700b, 700c ... ink containing pack.

Claims (3)

An ink storage pack having a folded portion in which two side films and a bottom film folded in half are sealed by a side seal portion and a bottom seal portion and folded back along a fold line along the side seal portion,
An ink storage pack characterized in that an intersection point of a fold line of the bottom film and the folding line is located in a bottom seal portion. Insert a spout into the Gazette pouch main body with the gusset parts folded inward on the left and right sides of the pair of front parts, and with the side seal formed, and insert the spout into the upper open end of the Gazette pouch main body The ink containing pack is
The gusset pouch main body is in a partial side seal forming range of 1/2 of the entire length from the upper end of the front part and 1/4 of the lateral width from the side end,
An ink storage pack characterized in that a partial side seal in which the front surface portion and the gusset portion are heat-sealed is formed with an area of 8 to 100% of the partial side seal formation range.   The front and rear sheet parts made of resin film overlap, and the gusset sheet parts made of resin film are inserted in half between the front and rear sheet parts along the one side, and at least the one side and both sides sandwiching this side Between the front sheet portion and the gusset sheet portion, between the rear sheet portion and the gusset sheet portion, and between the front sheet portion and the rear sheet portion by a band-shaped heat seal portion, respectively, An ink storage pack characterized in that a non-sealed portion is formed around an intersection by the seal edge of the portion extending around the intersection where the seal edge of the gusset sheet portion crosses the broken line.