Packaging material for pouch containers and pouch container package

Abstract

The present invention provides a pouch-container packaging material and a pouch-container packaging body with which a packaged object can be more reliably poured out through pressurization.　Provided is a pouch-container packaging material A1 that includes: a pair of body sheets 1A, 1B that define a containment space 19 for containing 《MK2》an object 6 to be packaged《 / MK2》; an opening section 18 that is provided at one side of the pair of body sheets 1A, 1B in the z-direction; an outlet part 5 that is provided at the other side of the pair of body sheets 1A, 1B in the z-direction with respect to the opening section 18; and, at a position closer to the other side in the z-direction than the opening section 18 is, an opening and closing part 2 that puts the containment space 19 in a closed state and in an open state. The pouch-container packaging material A1 includes: a locking band part 3 that is fixed to the pair of body sheets 1A, 1B at a pair of fixing sections 31 apart from each other in the width direction (x-direction) perpendicular to the y-direction, in which the pair of body sheets 1A, 1B face, and the z-direction and that forms an insertion space 39 between the locking band part 3 and an outer surface of one of the pair of body sheets 1A, 1B; and locking parts 11 that are formed of at least one of the pair of body sheets 1A, 1B and that are locked to the locking band part 3 when the pair of body sheets 1A, 1B are inserted into the insertion space 39 in a state of being folded.

Description

[Technical field]

[0001] The present invention relates to a packaging material for a pouch container and a pouch-container package. [Background technology]

[0002] Pouch containers are widely used not only for food products and toiletry products, but also for enteral nutritional supplements, intravenous nutritional supplements, infusions, etc., because of their excellent sealing properties and ease of handling. Percutaneous Endoscopic Gastrostomy (hereinafter referred to as PEG) is a method for administering nutritional supplements to patients. In PEG, the nutritional supplement is administered to a patient by pressurizing a pouch container package containing the nutritional supplement. Patent Document 1 discloses an example of a pouch container package that is pressurized. The pouch container package disclosed in the document includes a pair of main body sheets that define a storage space, a zipper that closes the storage space, the nutritional supplement that is the packaged item contained in the storage space, and an extraction section that pours out the nutritional supplement from the storage space. It is proposed that the pair of main body sheets be folded back when pressurized during use. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-127021 A Summary of the Invention [Problem to be solved by the invention]

[0004] The pouch container package is pressurized to a level that ensures that the nutrient can be reliably poured out of the extraction section. If the pouch container package is in an inappropriate condition, the nutrient may leak from the zipper. For example, in recent years, many large hospitals often administer nutrient to many patients via PEG. In this case, if the condition of the fold or the zipper is insufficient, problems such as leakage are likely to occur.

[0005] The present invention has been devised in light of the above-mentioned circumstances, and an object of the present invention is to provide a packaging material for a pouch container and a pouch-container package that enable the packaged contents to be poured out by applying pressure more reliably. [Means for solving the problem]

[0006] A packaging material for pouch containers provided by a first aspect of the present invention comprises a pair of main body sheets defining a storage space for storing a packaged item, an opening provided on one side of the pair of main body sheets in a first direction, a pouring portion provided on the other side of the pair of main body sheets in the first direction relative to the opening, and an opening / closing portion that switches between a state in which the storage space is sealed and a state in which the storage space is opened on the other side of the first direction relative to the opening, and is characterized in that it comprises a locking belt portion fixed to the main body sheet at a pair of fixing portions spaced apart in a width direction that is a direction in which the pair of main body sheets face each other and a direction perpendicular to the first direction, and which forms an insertion space between the main body sheet and an outer surface thereof, and a locking portion constituted by at least one of the pair of main body sheets and which is locked to the locking belt portion when the pair of main body sheets are inserted into the insertion space in a folded-over state.

[0007] In a preferred embodiment of the present invention, the engaging portion includes a constricted portion whose minimum dimension in the width direction is smaller than the width direction dimension between the pair of fixing portions, and a wide portion located on one side of the constricted portion in the first direction and whose width direction dimension is larger than the width direction dimension between the pair of fixing portions.

[0008] In a preferred embodiment of the present invention, the opening / closing portion and the constricted portion overlap each other in the first direction.

[0009] In a preferred embodiment of the present invention, the constriction portion has a bottom edge located inward in the width direction, a first side located on one side of the bottom edge in the first direction, and a second side located on the other side of the bottom edge in the first direction, and the inclination angle of the first side with respect to the first direction is greater than the inclination angle of the second side with respect to the first direction.

[0010] In a preferred embodiment of the present invention, the pair of fixing portions are arranged on both outer sides in the width direction with the accommodation space therebetween.

[0011] In a preferred embodiment of the present invention, the opening and closing portion comprises a first chuck sheet and a second chuck sheet separately joined to the inner surfaces of the pair of main body sheets, each of the first chuck sheet and the second chuck sheet has a chuck portion which performs an opening and closing function, the joint portion between the first chuck sheet and the inner surface of one of the pair of main body sheets is formed only on one side in the first direction relative to the chuck portion of the first chuck sheet, and the joint portion between the second chuck sheet and the inner surface of the other of the pair of main body sheets is formed on both sides which sandwich the chuck portion of the second chuck sheet in at least the first direction.

[0012] A pouch-container package provided by a second aspect of the present invention is characterized by comprising the pouch-container packaging material provided by the first aspect of the present invention and an item to be packaged accommodated in the accommodation space. Effect of the Invention

[0013] According to the present invention, the contents to be packaged can be more reliably poured out by applying pressure.

[0014] Other features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0015] [Figure 1]FIG. 1 is a perspective view showing a pouch-container packaging material according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is a front view showing a pouch-container packaging material according to a first embodiment of the present invention. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 1 is an enlarged cross-sectional view of a main portion showing a packaging material for pouch containers according to a first embodiment of the present invention. [Diagram 5] FIG. 3 is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 1 is a front view showing a state in which a pouch-container packaging material according to a first embodiment of the present invention is used. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 1 is a cross-sectional view showing a state in which a pouch-container packaging material according to a first embodiment of the present invention is used. [Figure 9] FIG. 1 is a perspective view showing a state in which a pouch-container packaging material according to a first embodiment of the present invention is used. [Figure 10] FIG. 1 is a front view showing a pouch-container package according to a first embodiment of the present invention. [Figure 11] 1 is an enlarged front view of a main part showing a pouch-container package according to a first embodiment of the present invention. [Figure 12] 11 is a cross-sectional view taken along line XI-XI in FIG. [Figure 13] FIG. 1 is a cross-sectional view showing a state in which the pouch-container package according to the first embodiment of the present invention is used. [Figure 14] FIG. 1 is a cross-sectional view showing a state in which a pouch-container packaging material according to a first embodiment of the present invention is used. [Figure 15] FIG. 1 is an enlarged cross-sectional view of a main portion showing a state in which a pouch-container packaging material according to a first embodiment of the present invention is used. [Figure 16] FIG. 2 is a front view showing a first modified example of the pouch-container packaging material according to the first embodiment of the present invention. [Figure 17] FIG. 2 is a front view showing a first modified example of the pouch-container package according to the first embodiment of the present invention. [Figure 18]FIG. 2 is a front view showing a second modified example of the pouch-container packaging material according to the first embodiment of the present invention. [Figure 19] FIG. 4 is a cross-sectional view showing a pouch-container packaging material and a pouch-container package according to a second embodiment of the present invention. [Figure 20] FIG. 11 is a cross-sectional view showing a first modified example of a pouch-container packaging material and a pouch-container package according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0017] The terms "first," "second," "third," etc. in this disclosure are used merely as labels and are not intended to dictate any ordering of their objects.

[0018] First Embodiment 1 to 15 show a pouch-container packaging material and a pouch-container package according to a first embodiment of the present invention. The pouch-container packaging material A1 of this embodiment includes a pair of main body sheets 1A, 1B, a locking portion 11, an opening / closing portion 2, a locking belt portion 3, a bottom seal portion 41, a pair of side seal portions 42, and a pouring portion 5. The pouch-container package B1 is a package in which a packaged item 6 is accommodated in the pouch-container packaging material A1. The applications of the pouch-container packaging material A1 and the pouch-container package B1 are not limited in any way, and the following description will be given by taking as an example a case where they are used to administer nutrition to a patient by the PEG technique.

[0019] FIG. 1 is a perspective view showing a pouch-container packaging material A1. FIG. 2 is a front view showing the pouch-container packaging material A1. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 4 is an enlarged cross-sectional view of a main part of the pouch-container packaging material A1. FIG. 5 is a cross-sectional view taken along line VV in FIG. 2. FIG. 6 is a front view showing a pouch-container packaging material A1 in use. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. FIG. 8 is a cross-sectional view showing a pouch-container packaging material A1 in use. FIG. 9 is a perspective view showing a pouch-container packaging material A1 in use. FIG. 10 is a front view showing a pouch-container package B1. FIG. 11 is an enlarged front view of a main part of the pouch-container package B1. FIG. 12 is a cross-sectional view taken along line XI-XI in FIG. 10. FIG. 13 is a cross-sectional view showing a pouch-container package B1 in use. Fig. 14 is a cross-sectional view showing the pouch-container packaging material A1 in use. Fig. 15 is an enlarged cross-sectional view of a main part of the pouch-container packaging material A1 in use.

[0020] In these figures, the z direction corresponds to the first direction in the present invention. The y direction is the direction in which the pair of main body sheets 1A, 1B face each other. The x direction is a direction perpendicular to the y direction and the z direction, and corresponds to the width direction in the present invention. Depending on the usage state of the pouch-container packaging material A1 and the pouch-container package B1, the z direction may coincide with the vertical direction (up-down direction), but is not limited to this. In this embodiment, the z direction coincides with the vertical direction of the pouch-container package B1.

[0021] As shown in Fig. 2, the front view shape of the illustrated pouch-container packaging material A1 is generally substantially rectangular, but the shape of the pouch-container packaging material A1 is not limited to this. For example, the front view shape of the pouch-container packaging material A1 may be various shapes such as a circle, an ellipse, an oval (egg), a triangle (preferably an inverted triangle), a polygon, etc. In the illustrated example, the outer edges of the pair of main body sheets 1A, 1B are configured to substantially coincide with each other, but they may be configured to be partially offset from each other.

[0022] The pair of main body sheets 1A, 1B are overlapped with each other in the y direction, which is the front-back direction, and constitute most of the outer surface of the pouch container packaging material A1. As shown in Figs. 1 to 3, the bottom seal portion 41 is formed by joining the lower ends of the pair of main body sheets 1A, 1B, including the lower edges and the portions near the lower edges. In the illustrated example, the pouring portion 5 is sandwiched between the lower edges of the pair of main body sheets 1A, 1B, and the lower edges of the pair of main body sheets 1A, 1B and the pouring portion 5 are joined by the bottom seal portion 41, but this is not limited thereto, and the pouring portion 5 may be fixed to the pair of main body sheets 1A, 1B at the side seal portion 42, or may be fixed to the pair of main body sheets 1A, 1B at the intersection (corner portion) of the bottom seal portion 41 and the side seal portion 42 in an attitude inclined with respect to the x direction and the z direction.

[0023] 1, 2 and 5, the pair of side seal portions 42 are formed by joining a pair of side end portions including a pair of side edges and portions near the pair of side edges of the pair of main body sheets 1A, 1B. The bottom seal portion 41 and the pair of side seal portions 42 are preferably joined by, for example, heat sealing.

[0024] An accommodation space 19 is defined by the pair of main body sheets 1A, 1B, the bottom seal portion 41, and the pair of side seal portions 42. The accommodation space 19 is a space for accommodating the packaged article 6. An opening 18 is formed on one side in the z direction of the pair of main body sheets 1A, 1B. The opening 18 is an opening provided between one side ends in the z direction of the pair of main body sheets 1A, 1B.

[0025] As shown in Figs. 1 to 4, the opening / closing part 2 is provided on the other side (inner side) in the first direction than the opening 18. The opening / closing part 2 can be in a state where it closes the storage space 19 or a state where it opens it. The specific configuration of the opening / closing part 2 is not limited in any way, and in this embodiment, the opening / closing part 2 is made of a first zip sheet 21 and a second zip sheet 22 fixed to the inner surfaces of the pair of main body sheets 1A, 1B, and is specifically a zipper.

[0026] The first chuck sheet 21 is fixed to the inner surface of the main body sheet 1A and has a support portion 211 and a chuck portion 212. The support portion 211 is a flat band-shaped portion. The chuck portion 212 is supported by the support portion 211 and is formed as a so-called male chuck in the illustrated example. In the illustrated example, two chuck portions 212 each extending long in the x direction are provided parallel to each other and spaced apart from each other in the z direction. The number of chuck portions 212 is not particularly limited and may be one or may be three or more.

[0027] The second chuck sheet 22 is fixed to the inner surface of the main body sheet 1B and has a support portion 221 and a chuck portion 222. The support portion 221 is a flat band-shaped portion. The chuck portion 222 is supported by the support portion 221 and is formed as a so-called female chuck in the illustrated example. In the illustrated example, two chuck portions 222 each extending long in the x direction are provided parallel to each other and spaced apart from each other in the z direction. The number of chuck portions 222 is not particularly limited, and may be one, or may be three or more. The chuck portion 212 and the chuck portion 222 are engaged with and disengaged from each other to realize the closed state and the open state of the opening / closing portion 2.

[0028] The method of fixing the first chuck sheet 21 and the second chuck sheet 22 is not limited, and in this embodiment, a fixing method using heat sealing is used as an example. In this case, the first chuck sheet 21 and the second chuck sheet 22 are made of a resin material that can be heat sealed.

[0029] As shown in FIG. 4, the first chuck sheet 21 and the main body sheet 1A are fixed at the first chuck seal portion 43. The first chuck seal portion 43 is a portion where the support portion 211 of the first chuck sheet 21 and the inner surface of the main body sheet 1A are fixed by heat sealing. In the illustrated example, only a portion of the first chuck seal portion 43 located on one side in the z direction (the side where the opening 18 is provided) of the two chuck portions 212 of the support portion 211 of the first chuck sheet 21 is joined to the inner surface of the main body sheet 1A. That is, the portion of the support portion 211 where the two chuck portions 212 are provided and the portion located on the other side in the z direction of the two chuck portions 212 are not directly fixed to the main body sheet 1A, and can be separated from the inner surface of the pouch-container packaging material A1 within the range where the support portion 211 is bent. The specific form of the first chuck seal portion 43 that fixes the first chuck sheet 21 and the main body sheet 1A is not limited in any way. For example, substantially the entire support portion 211 of the first chuck sheet 21 may be fixed to the main body sheet 1A. In order to realize such a configuration, the first chuck seal portion 43 may be formed at least on both sides of the first chuck sheet 21 in the z direction. In other words, only both end portions of the first chuck sheet 21 in the z direction may be fixed to the main body sheet 1A.

[0030] As shown in FIG. 4, the second chuck sheet 22 and the main body sheet 1B are fixed at the second chuck seal portion 44. The second chuck seal portion 44 is a portion where substantially the entire support portion 221 of the second chuck sheet 22 and the inner surface of the main body sheet 1B are fixed by heat sealing. That is, the second chuck seal portion 44 is provided across the second chuck sheet 22 at a position where it overlaps with at least two chuck portions 222. Therefore, the two chuck portions 222 are prevented from separating from the inner surface of the main body sheet 1B. The specific form of the second chuck seal portion 44 that fixes the second chuck sheet 22 and the main body sheet 1B is not limited at all. In order to fix substantially the entire second chuck sheet 22 to the main body sheet 1B, the second chuck seal portion 44 may be formed at least on both sides of the second chuck sheet 22 in the z direction. That is, only both end portions of the second chuck sheet 22 in the z direction may be fixed to the main body sheet 1B. Furthermore, for example, when substantially the entire first chuck sheet 21 is fixed to the main body sheet 1A, the second chuck seal portion 44 may be formed only on one side of the chuck portion 212 of the second chuck sheet 22 in the z direction (the side on which the opening 18 is provided), so that the chuck portion 222 can be separated from the main body sheet 1B.

[0031] As shown in Figs. 1 to 3, the pouring portion 5 is provided on the other side of the pair of main body sheets 1A and 1B in the z direction with respect to the opening 18. The pouring portion 5 is for pouring out the packaged item 6 from the storage space 19 in the pouch-container package B1 using the pouch-container packaging material A1. The specific configuration of the pouring portion 5 is not limited, and in this embodiment, the pouring portion 5 is composed of a main body portion 51 and a cap portion 52. The pouring portion of the present invention is not limited to being formed separately from the main body sheet 1A and the main body sheet 1B, and may be formed by a part of the main body sheet 1A or the main body sheet 1B. The main body portion 51 is a portion in which a through hole for pouring out the packaged item 6 is formed. A part of the main body portion 51 is sandwiched and joined between the main body sheet 1A and the main body sheet 1B at the bottom seal portion 41 as described above. In this case, the main body portion 51 (pour-out portion 5) is made of a heat-sealable resin such as PP (polypropylene).

[0032] The cap portion 52 closes the through hole of the main body portion 51, and is removed from the main body portion 51 when pouring out the packaged item 6. In the illustrated example, a fin-shaped portion is formed in the cap portion 52. The cap portion 52 can be removed from the main body portion 51 by twisting the cap portion 52 by hooking a finger on the fin-shaped portion, for example.

[0033] As shown in Figs. 1 to 3 and 5, the fastening belt portion 3 is fixed to the pair of main body sheets 1A, 1B at a pair of fastening portions 31, and has a shape that extends long in the x direction. The fastening belt portion 3 forms an insertion space 39 between the outer surface of the main body sheet 1A, which is one of the pair of main body sheets 1A, 1B. The material of the fastening belt portion 3 is not particularly limited, and various materials such as a resin sheet, a cloth material, and a paper material can be used. In the following, the fastening belt portion 3 will be described as being made of a heat-sealable resin sheet, similar to the main body sheets 1A, 1B. In addition, in the formation and use of the pouch container package B1 described later, when the pouch container packaging material A1 or the pouch container package B1 is used in a hanging state by fastening the fastening belt portion 3 to a hook or the like (not shown), it is preferable to select the fastening belt portion 3 from one having a strength sufficient to support the weight of the pouch container package B1 including the packaged item 6.

[0034] In this embodiment, the pair of fixing parts 31 are arranged on both sides of the storage space 19 in the x direction. The fixing method of the fixing part 31 is not limited at all, and heat sealing, adhesion, etc. are appropriately used. In this embodiment, an example will be described in which the fixing part 31 is formed together with the pair of side seal parts 42 by heat sealing. Note that both or one of the pair of fixing parts 31 may be arranged inside the pair of side seal parts 42 in the x direction. In the illustrated example, as shown in Figs. 2 and 5, both ends of the main body sheet 1A in the x direction are cut out in a semicircular shape, and the inner surface of the main body sheet 1B and the inner surface of the locking belt part 3 are joined by heat sealing through the cutout parts. The shape of the fixing part 31 is not particularly limited, and various shapes such as a semicircular shape, a circular shape, an elliptical shape, an oval shape, a square shape, and other polygonal shapes as viewed from the y direction as shown in Figs. 2 and 5 can be adopted. Note that the fixing part 31 may be provided over the entire length of the locking belt part 3 in the z direction, or may be provided in a partial area in the z direction. In this embodiment, the fixing portion 31 is provided in the center region of the fastening belt portion 3 in the z direction. The portions of the fastening belt portion 3 located above and below the fixing portion 31 in the z direction are not joined to the surface of the main body sheet 1A. The specific fixing manner of the pair of fastening portions 31 is not limited in any way. In addition to the above-mentioned individual manners, for example, the ends of the fastening belt portion 3 may be joined to the surface of the main body sheet 1A or the main body sheet 1B by a method such as adhesion. The ends of the fastening belt portion 3 may be further joined to the surface of the main body sheet 1A by a method such as adhesion in addition to the inner surface of the main body sheet 1B. The ends of the fastening belt portion 3 may be joined to the surfaces of both the main body sheet 1A and the main body sheet 1B by a method such as adhesion so as to wrap around from the main body sheet 1A to the main body sheet 1B. Furthermore, the fixing manner of one of the pair of fastening portions 31 and the other may be different from each other.

[0035] The locking portion 11 is a portion formed by at least one of the pair of main body sheets 1A, 1B. The locking portion 11 is a portion that is locked to the locking band portion 3 by inserting the pair of main body sheets 1A, 1B in a folded-over state into the insertion space 39. The specific configuration of the locking portion 11 is not limited in any way, and in this embodiment, as shown in Figs. 1 and 2, the locking portion 11 includes a constricted portion 12 and a wide portion 13. Note that, in this embodiment, the locking portion 11 is formed by a portion of each of the pair of main body sheets 1A, 1B, but is not limited thereto, and may be formed by a portion of only one of the pair of main body sheets 1A, 1B.

[0036] The constricted portion 12 is a part of at least one of the pair of main body sheets 1A, 1B, and is a portion in which the width W1, which is the minimum dimension in the x direction, is smaller than the distance W0 in the x direction between the pair of fixing portions 31. In this embodiment, the constricted portion 12 is formed by a part of each of the pair of main body sheets 1A, 1B, and has a bottom side 120, a first side 121, and a second side 122. The bottom side 120 is a side located inward in the x direction. The first side 121 is a side provided on one side in the z direction (the side where the opening 18 is located) with respect to the bottom side 120. The second side 122 is a side provided on the other side in the z direction with respect to the bottom side 120. The bottom side 120, the first side 121, and the second side 122 may be various shapes such as straight lines, curved lines, and bent lines as appropriate. For example, the bottom side 120, the first side 121, and the second side 122 may be continuously curved. In the illustrated example, the inclination angle of first side 121 with respect to the z direction is larger than the inclination angle of second side 122 with respect to the z direction, for example, the inclination angle of first side 121 with respect to the z direction is about 90°, whereas the inclination angle of second side 122 with respect to the z direction is about 45°. In the illustrated example, two each of base sides 120, first sides 121, and second sides 122 are formed on both sides in the x direction of constricted portion 12, but the configuration of constricted portion 12 is not limited to this, and for example, base side 120, first side 121, and second side 122 may be provided on only one side in the x direction.

[0037] The wide portion 13 is formed of a part of at least one of the pair of main body sheets 1A, 1B, and in this embodiment, is formed of a part of each of the pair of main body sheets 1A, 1B. The wide portion 13 is provided on one side in the z direction (the side where the opening 18 is located) of the constricted portion 12, and is a portion whose width W2, which is the x-direction dimension, is greater than the distance W0 in the x direction between the pair of fixing portions 31. In the illustrated example, the wide portion 13 is shaped to protrude on both sides in the x direction from the constricted portion 12. Note that the wide portion 13 may be shaped to protrude only on one side in the x direction from the constricted portion 12.

[0038] As shown in FIG. 2, in this embodiment, the opening / closing portion 2 is provided at a position overlapping the waist portion 12 when viewed from the y direction. The pair of main body sheets 1A, 1B are intended to be folded back at the planned folding line 17 when forming the pouch container package B1 described later. In the illustrated example, the planned folding line 17 is located between the opening / closing portion 2 and the locking belt portion 3 in the z direction, and is set at a position overlapping the waist portion 12. More specifically, the planned folding line 17 is set at a position overlapping the bottom side 120. The position of the planned folding line 17 is not particularly limited as long as it is on the other side of the z direction from the opening / closing portion 2 and between the locking belt portion 3, and may be at a position where the pair of main body sheets 1A, 1B can be appropriately folded back when forming the pouch container package B1 described later.

[0039] In the present embodiment, the pouch-container packaging material A1 has a pair of inclined sides 15. The pair of inclined sides 15 is provided on one side in the z direction with respect to the wide width portion 13. The pair of inclined sides 15 are inclined so that the distance between them in the x direction becomes smaller toward one side in the z direction (closer to the opening 18). Note that the packaging material A1 may not have a pair of inclined sides 15, or may have only one inclined side 15.

[0040] Each sheet constituting the pouch container packaging material A1 is usually composed of a resin film. The resin film constituting the sheet is required to have basic performance as a package, such as impact resistance, abrasion resistance, and heat resistance. In addition, since the above-mentioned sealing parts and the above-mentioned joint parts are usually formed by heat sealing, the sheet is also required to have sealant properties. As the sheet, a multilayer sheet having a base film layer and a sealant layer that imparts sealant properties is suitable, and when high gas barrier properties or light blocking properties are required, it is suitable to provide a barrier layer between the base film layer and the sealant layer. Note that the base film layer itself may be given barrier properties. In this case, the barrier layer is used as the base film layer, and the multilayer sheet has a barrier layer and a sealant layer. In addition, when the sealant property is to be imparted to both sides of the sheet, a monolayer film forming a sealant layer described later may be used, or in the case of a multilayer sheet, a sheet having two sealant layers of the same or different types (in this case, one of the sealant layers is formally used as a base film layer), or a sheet having a sealant layer on both sides of a base film layer may be used. In this embodiment, a pair of main body sheets 1A, 1B and the fastening belt portion 3 are used as multilayer sheets whose outer surface is made of a base film layer and whose inner surface is made of a sealant layer.

[0041] Here, examples of the materials constituting the base film layer, the sealant layer, and the gas barrier layer are given below. The lamination of each of these layers can be performed by a conventional lamination method, such as dry lamination using an adhesive, lamination using a solventless adhesive, or thermal lamination in which a thermally adhesive layer is sandwiched and bonded by heat, or extrusion lamination in which a resin that will become the sealant layer is melt-extruded onto the base film layer.

[0042] Examples of films constituting the base film layer include single-layer or double-layer or more stretched or unstretched films made of polyester (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), etc.), polyolefin (polyethylene (PE), polypropylene (PP)), polyamide (nylon-6, nylon-66, etc.), polyacrylonitrile (PAN), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), etc., and particularly preferred are biaxially oriented PET films and biaxially oriented polyamide films having a thickness of 9 to 30 μm.

[0043] Examples of the resin layer constituting the sealant layer include a single layer or two or more layers of film or extrusion laminated resin composed of low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), ethylene-propylene copolymer (EP), unoriented polypropylene (CPP), ethylene-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-vinyl acetate copolymer (EVA), etc. The thickness of the sealant layer is 20 to 150 μm, preferably 40 to 120 μm.

[0044] Examples of the gas barrier layer include a thin metal film such as aluminum, a resin film such as polyvinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or a film obtained by vapor-depositing (or sputtering) aluminum, aluminum oxide, silica, or other inorganic oxides onto any synthetic resin film (which may be, for example, a base film layer).

[0045] The pair of main body sheets 1A, 1B may be provided with, for example, a scale (not shown) for measuring the liquid volume of a nutrient as the packaged item 6. In addition to the scale, a printed layer may be provided that displays the product name, ingredients, precautions for use, etc. The printed layer can be provided on the base film layer by gravure printing or flexo printing.

[0046] 6 to 15 show the pouch-container packaging material A1 in use, and show the formation of a pouch-container package B1 using the pouch-container packaging material A1.

[0047] First, as shown in Figures 6 and 7, the opening / closing part 2 is opened and the opening 18 is expanded. In the illustrated state, the first direction, or z direction, is aligned vertically. Next, the packaged item 6 is filled into the storage space 19 through the opening 18. In this embodiment, the packaged item 6 is a liquid nutrient. The amount of the packaged item 6 to be filled is not particularly limited, but is at least the amount at which the liquid level is located below the opening / closing part 2 in the z direction.

[0048] 8, the chuck portion 212 of the first chuck sheet 21 and the chuck portion 222 of the second chuck sheet 22 are fitted together to close the opening / closing portion 2. This closes the storage space 19 with the packaged item 6 contained therein. In this state, the packaged item 6 is sealed within the storage space 19.

[0049] Next, as shown in FIG. 9, the upper end portions of the pair of main body sheets 1A, 1B in the z direction are grasped, and the pair of main body sheets 1A, 1B are folded back at the planned folding lines 17. At this time, the pair of main body sheets 1A, 1B are folded back so that the main body sheet 1A is on the inside (valley side) and the main body sheet 1B is on the outside (mountain side). Next, the leading ends of the pair of main body sheets 1A, 1B are inserted into the insertion space 39. The leading ends of the pair of main body sheets 1A, 1B are passed between the pair of fixing parts 31 in order, and the wide width part 13 is passed through. Then, the insertion is completed with the constricted part 12 positioned between the pair of fixing parts 31. As a result, the locking part 11 is locked to the locking band part 3 with the pair of main body sheets 1A, 1B folded back at the fold-back part 170, as shown in FIG. 10 and FIG. 12. As a result, the pouch container package B1 is completed.

[0050] 10, in this embodiment, the locking portion 11 and the locking band portion 3 are locked together by positioning the wide portion 13 below in the z direction of the pair of fixing portions 31. More specifically, the pair of first sides 121 abut against the pair of fixing portions 31 from below in the z direction, thereby achieving a more reliable locking.

[0051] FIG. 13 shows an example of use of the pouch container package B1. The cap part 52 of the pouring part 5 is removed from the main body part 51, and a pouring nozzle 71 is mounted on the main body part 51. A pouring pipe 72 is connected to the pouring nozzle 71. The pouring pipe 72 is for guiding the packaged article 6 poured out from the main body part 51 to the PEG of the patient. In addition, a pressurizing means 75 is disposed on both sides of the pouch container package B1 (accommodation space 19) in the y direction. The pressurizing means 75 is for applying pressure to the pouch container package B1 to pour out the packaged article 6. In the illustrated example, the pressurizing means 75 is configured to apply pressure to an area including the locking band part 3 and the locking part 11.

[0052] The pressure of the pressurizing means 75 is adjusted so that the packaged item 6 can be dispensed at a desired speed. By applying pressure from the pressurizing means 75, the packaged item 6 is dispensed from the storage space 19 of the pouch-container packaging material A1 through the main body 51 of the dispensing part 5. The packaged item 6 is guided to the patient's PEG via the dispensing pipe 72 and administered into the patient's body.

[0053] Next, the functions of the pouch-container packaging material A1 and the pouch-container package B1 will be described.

[0054] According to this embodiment, as shown in Fig. 10 and Fig. 12, in the pouch-container package B1 formed using the pouch-container packaging material A1, the pair of main body sheets 1A, 1B are folded back at the fold-back portion 170, and the locking portion 11 is locked to the locking belt portion 3. Therefore, for example, as shown in Fig. 13, when the pouch-container package B1 is pressurized by the pressurizing means 75, it is possible to more reliably maintain the folded back state of the pair of main body sheets 1A, 1B. This makes it possible to prevent the packaged item 6 from reaching the opening / closing portion 2 due to the pressure from the pressurizing means 75, and to prevent the sealed state of the opening / closing portion 2 from being released due to the pressure of the packaged item 6. Therefore, it is possible to reduce leakage of the packaged item 6 due to pressure, and the packaged item 6 can be more reliably poured out.

[0055] 13, by applying pressure to the area including the fastening belt portion 3 and the fastening portion 11 with the pressure means 75, the pair of main body sheets 1A, 1B can be more reliably maintained in the folded-back state at the fold-back portion 170. This is preferable for preventing leakage of the packaged article 6 and for properly pouring the packaged article 6.

[0056] As shown in Figs. 1 and 2, the locking portion 11 has a narrowed portion 12 and a wide portion 13. The width W1 of the narrowed portion 12 is smaller than the distance W0 between the pair of fastening portions 31. Therefore, in the pouch-container package B1 shown in Figs. 10 and 12, the narrowed portion 12 can be positioned between the pair of fastening portions 31 so as to overlap with the locking band portion 3. Furthermore, the width W2 of the wide portion 13 is larger than the distance W0 between the pair of fastening portions 31. Therefore, when the wide portion 13 is passed between the pair of fastening portions 31 from the leading ends of the pair of main body sheets 1A, 1B to the other side in the z direction, as shown in Fig. 10, the wide portion 13 is caught by the pair of fastening portions 31. This makes it possible to more firmly lock the locking portion 11 and the locking band portion 3, which is preferable for maintaining the folding at the folded-back portion 170.

[0057] As shown in FIG. 2, the waist portion 12 has a first side 121. The first side 121 has a larger inclination angle with respect to the z direction than the second side 122. Therefore, as shown in FIG. 10, when the locking portion 11 (wide portion 13) is locked to a pair of fixing portions 31, the first side 121 can be more reliably abutted against the fixing portions 31 from the other side in the z direction. This is suitable for more firmly locking the locking portion 11 and the locking belt portion 3. In addition, the portions of the locking belt portion 3 located above and below the fixing portions 31 in the z direction are not joined to the surface of the main body sheet 1A. As shown in FIG. 11, the first side 121 of the waist portion 12 is accommodated in this non-jointed portion, so that the first side 121 can be prevented from getting caught when the pouch-container package B1 is used (for example, when the pouch-container package B1 is inserted into or removed from a holder (pressure means 75, etc.)).

[0058] 1, 2 and 10, the pair of fixing parts 31 are located on both sides of the accommodation space 19 in the x direction. This allows the dimension of the insertion space 39 in the x direction to be set larger, and the width W1 of the narrowed part 12 of the locking part 11 to be larger. This is therefore preferable for realizing and maintaining a state in which the pair of main body sheets 1A, 1B are folded back over the entire width in the x direction by the locking part 11 and the locking band part 3.

[0059] The fastening portion 11 (the narrowed portion 12 and the wide portion 13) is formed by a part of each of the pair of main body sheets 1A, 1B, which makes it possible to increase the rigidity of the fastening portion 11. This is preferable for more firmly fastening the fastening portion 11 and the fastening band portion 3.

[0060] Furthermore, the pair of fixing parts 31 are heat-sealed between both x-direction ends of the fastening belt part 3 and the main body sheet 1B at a pair of side seal parts 42. In this manner, the fixing parts 31 are formed to form part of the side seal parts 42, thereby further increasing the fixing strength of the fastening belt part 3 to the pair of main body sheets 1A, 1B.

[0061] As shown in FIG. 4, the first chuck seal portion 43 that fixes the first chuck sheet 21 and the main body sheet 1A is formed only on one side in the z direction with respect to the chuck portion 212 of the first chuck sheet 21. On the other hand, the second chuck seal portion 44 that fixes the second chuck sheet 22 and the main body sheet 1B is provided over the entire area of ​​the support portion 221 so as to overlap with the chuck portion 222. For example, as shown in FIG. 14 and FIG. 15, when forming the pouch-container package B1 using the pouch-container packaging material A1, a strong pressure may be unintentionally applied to the storage space 19 before folding back the pair of main body sheets 1A, 1B at the planned folding line 17. At this time, since the above-mentioned folded portion 170 has not yet been formed, the pressure of the packaged item 6 is transmitted to the opening / closing portion 2. This pressure acts to push open the main body sheet 1A and the main body sheet 1B.

[0062] 15, the portion of the support portion 211 of the first chuck sheet 21 where the two chuck portions 212 are provided and the portion located on the other side of the two chuck portions 212 in the z direction are not directly fixed to the main body sheet 1A, and can be separated from the inner surface of the pouch-container packaging material A1 within the range where the support portion 211 is bent. As a result, a portion of the first chuck sheet 21 is separated from the main body sheet 1A, and pressure from the packaged item 6 is applied to this portion. This pressure is received by the first chuck seal portion 43, which is the joint portion between the main body sheet 1A and the first chuck sheet 21. The first chuck seal portion 43 is formed by heat sealing, and is stronger and has better sealing properties than, for example, the engagement between the first chuck sheet 21 and the second chuck sheet 22. On the other hand, the pressure of the packaged item 6 is prevented from being applied to the fitting portion between chuck portion 212 of first chuck sheet 21 and chuck portion 222 of second chuck sheet 22, and the first chuck sheet 21 and second chuck sheet 22 are less likely to be pushed open. Therefore, even if such unintended pressure is applied, leakage of the packaged item 6 can be prevented.

[0063] 16 to 20 show modified examples and other embodiments of the present invention. In these figures, elements that are the same as or similar to those in the above embodiment are given the same reference numerals as those in the above embodiment.

[0064] <First Modification of First Embodiment> 16 and 17 show a first modified example of the pouch-container packaging material A1 and the pouch-container package B1. In this example, the pouch-container packaging material A11 is provided with a first display portion 81 and a second display portion 82.

[0065] As shown in Fig. 16, the first display portion 81 is provided so as to be visible from the outer surface of the main body sheet 1A. The second display portion 82 is provided so as to be visible from the outer surface of the main body sheet 1B. In the illustrated example, the first display portion 81 is provided on the other side of the main body sheet 1A in the z direction relative to the fastening band portion 3, and is provided with a pattern representing a part of a star shape by printing or the like. The second display portion 82 is provided near one end of the main body sheet 1B in the z direction, and is provided with a pattern representing the other part of the star shape by printing or the like.

[0066] As shown in Fig. 17, in the pouch-container package B11 formed using the pouch-container packaging material A11, a pair of main body sheets 1A, 1B are folded at a folding portion 170 to form a combined display portion 80 in which a first display portion 81 and a second display portion 82 are combined. In the illustrated example, the combined display portion 80 is a star-shaped pattern formed by combining the first display portion 81 and the second display portion 82 having the above-mentioned shapes. The shape of the combined display portion 80 is not particularly limited, and a shape that is more familiar to users or that calls their attention is appropriately adopted by combining the first display portion 81 and the second display portion 82, rather than the first display portion 81 and the second display portion 82 being visually recognized individually.

[0067] This modified example also provides the same effects as the pouch-container packaging material A1 and the pouch-container package B1. In addition, when the pouch-container package B11 is formed, if the folding is not performed along the planned folding line 17, the first display portion 81 and the second display portion 82 can be visually recognized alone, giving the user a sense of incongruity and incompleteness, and encouraging folding along the planned folding line 17. This is preferable for avoiding erroneous use in a state where the pouch-container package B11 is not folded along the planned folding line 17 and the locking portion 11 and the locking band portion 3 are not locked.

[0068] <Second Modification of First Embodiment> 18 shows a second modified example of the pouch-container packaging material A12. In this example, the shape of the waist portion 12 and the fixing portion 31 of the pouch-container packaging material A12 is different from that of the above-mentioned examples.

[0069] The constricted portion 12 in this example has a bent base 120 and a central portion in the z direction that protrudes outward in the x direction. The fixed portion 31 in this example has a bent inner edge in the x direction and a central portion in the z direction that is recessed outward in the x direction.

[0070] This modified example also provides the same effects as the pouch-container packaging material A1 and the pouch-container package B1. When the locking portion 11 is locked to the fixing portion 31 of the locking belt portion 3, the bent bottom edge 120 fits into the bent portion of the fixing portion 31. This further enhances the locking effect between the locking portion 11 and the fixing portion 31.

[0071] <Second embodiment> Fig. 19 shows a pouch-container packaging material and a pouch-container package according to a second embodiment of the present invention. In the pouch-container packaging material A2 of this embodiment, the locking portion 11 is formed only by the main body sheet 1B, and does not include the main body sheet 1A. For example, only the main body sheet 1B has the shapes of the waist portion 12 and the wide portion 13 as shown in Fig. 2. In this embodiment, the locking portion 11 is provided at a position that does not overlap with the opening / closing portion 2, and is provided on one side of the opening / closing portion 2 in the z direction in the pouch-container packaging material A1.

[0072] In the pouch-container package B2, a pair of main body sheets 1A, 1B are folded back at a fold-back portion 170, and a fastening portion 11 formed by the main body sheet 1B is fastened to a fastening band portion 3.

[0073] This embodiment also allows the packaged article 6 to be poured out more reliably by applying pressure. As can be seen from this embodiment, the locking portion 11 may be formed only of the main body sheet 1B. It is sufficient that the locking portion 11 and the locking belt portion 3 can be appropriately locked together depending on the material and thickness of the main body sheet 1B, the shapes of the locking portion 11 and the locking belt portion 3 (the pair of fixing portions 31), and the like. In the usage state shown in FIG. 13, even if the locking portion 11 is formed only of the main body sheet 1B, it is possible to maintain the folded-up state of the folded-up portion 170 by being pressed down by the pressure means 75.

[0074] <First Modification of Second Embodiment> Fig. 20 shows a first modified example of the pouch-container packaging material A2 and the pouch-container package B2. In the pouch-container packaging material A21 of this modified example, the locking portion 11 is formed only by the main body sheet 1A, and does not include the main body sheet 1B. For example, only the main body sheet 1A has the shape of the waist portion 12 and the wide portion 13 as shown in Fig. 2. In this embodiment, the locking portion 11 is provided at a position that does not overlap with the opening / closing portion 2, and is provided on one side of the opening / closing portion 2 in the z direction in the pouch-container packaging material A1.

[0075] In the pouch-container package B21, a pair of main body sheets 1A, 1B are folded back at a fold-back portion 170, and a fastening portion 11 formed by the main body sheet 1A is fastened to a fastening band portion 3.

[0076] This embodiment also allows the packaged article 6 to be poured out more reliably by applying pressure. As can be understood from this embodiment, the locking portion 11 may be composed of only the main body sheet 1A. It is sufficient that the locking portion 11 and the locking belt portion 3 can be appropriately locked together depending on the material and thickness of the main body sheet 1A, the shapes of the locking portion 11 and the locking belt portion 3 (the pair of fixing portions 31), and the like. In the usage state shown in FIG. 13, even if the locking portion 11 is composed of only the main body sheet 1A, it is possible to maintain the folded-up state of the folded-up portion 170 by being pressed down by the pressure means 75.

[0077] The pouch-container packaging material and the pouch-container package according to the present invention are not limited to the above-mentioned embodiment. The specific configurations of the respective parts of the pouch-container packaging material and the pouch-container package according to the present invention can be freely designed in various ways. [Explanation of symbols]

[0078] A1, A11, A2, A21: Packaging material for pouch containers B1, B11, B2, B21: Pouch container packaging 1A, 1B: Main sheet 2: Opening and closing section 3: Locking belt part 5: Pour part 6: Item to be packaged 11: Locking part 12 : part 13: Wide section 15: Inclined edge 17: Scheduled turnaround line 18: Opening 19: Containment space 21: First zipper sheet 22: Second zipper sheet 31:Fixed part 39: Insertion space 41: Bottom seal 42: Side seal part 43: First zipper seal part 44: Second zipper seal part 51: Main body 52: Cap part 71: Pouring nozzle 72: Injection pipe 75: Pressurizing means 80: Union display section 81: 1st display section 82:Second display 120: Bottom 121: Side 1 122: Side 2 170: Folded part 211,221: Support part 212, 222: Chuck part W0 :Distance W1, W2: Width

Claims

1. A pair of main sheets defining a storage space for storing the packaged item; an opening provided on one side of the pair of main body sheets in a first direction; a pouring portion provided on the other side of the pair of main body sheets in the first direction with respect to the opening; An opening / closing part that closes and opens the storage space on the other side of the opening in the first direction, a locking band portion fixed to the main body sheet at a pair of fixing portions spaced apart in a width direction, which is a direction in which the pair of main body sheets face each other and a direction perpendicular to the first direction, and which forms an insertion space between the pair of fixing portions and an outer surface of the main body sheet; a locking portion that is formed by at least one of the pair of main body sheets and that is locked to the locking band portion when the pair of main body sheets are inserted into the insertion space in a folded state; A packaging material for a pouch container, comprising:

2. 2. The packaging material for pouch containers according to claim 1, wherein the engaging portion includes a narrowed portion whose minimum dimension in the width direction is smaller than the width direction dimension between the pair of fixed portions, and a wide portion located on one side in the first direction of the narrowed portion and whose width direction dimension is larger than the width direction dimension between the pair of fixed portions.

3. The packaging material for pouch containers according to claim 2 , wherein the opening / closing portion and the waist portion overlap each other in the first direction.

4. the constricted portion has a bottom side located on the inside in the width direction, a first side located on one side in the first direction with respect to the bottom side, and a second side located on the other side in the first direction with respect to the bottom side, The packaging material for pouch containers according to claim 2 or 3, wherein an inclination angle of the first side with respect to the first direction is larger than an inclination angle of the second side with respect to the first direction.

5. 5. The packaging material for pouch containers according to claim 1, wherein the pair of fixing parts are arranged on both outer sides in the width direction with the storage space therebetween.

6. The opening and closing portion includes a first zipper sheet and a second zipper sheet which are respectively joined to the inner surfaces of the pair of main body sheets, Each of the first chuck sheet and the second chuck sheet has a chuck portion that performs an opening and closing function, a joint portion between the first chuck sheet and one of the inner surfaces of the pair of main body sheets is formed only on one side in the first direction relative to the chuck portion of the first chuck sheet, A packaging material for pouch containers as described in any one of claims 1 to 4, wherein the joint portion between the second chuck sheet and the other inner surface of the pair of main body sheets is formed on both sides of the chuck portion of the second chuck sheet at least in the first direction.

7. A packaging material for a pouch container according to any one of claims 1 to 6, and an item to be packaged accommodated in the accommodation space.

Images