WO2014196071A1 - Bag - Google Patents

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Publication number
WO2014196071A1
WO2014196071A1 PCT/JP2013/065742 JP2013065742W WO2014196071A1 WO 2014196071 A1 WO2014196071 A1 WO 2014196071A1 JP 2013065742 W JP2013065742 W JP 2013065742W WO 2014196071 A1 WO2014196071 A1 WO 2014196071A1
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WO
WIPO (PCT)
Prior art keywords
opening
bag body
easy
bag
open
Prior art date
Application number
PCT/JP2013/065742
Other languages
French (fr)
Japanese (ja)
Inventor
真理 西岡
Original Assignee
NISHIOKA Mari
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NISHIOKA Mari filed Critical NISHIOKA Mari
Priority to PCT/JP2013/065742 priority Critical patent/WO2014196071A1/en
Publication of WO2014196071A1 publication Critical patent/WO2014196071A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855Peelable seals

Definitions

  • the present invention relates to a bag for storing contents such as food, medical products, and cosmetics. Specifically, the present invention relates to a bag body having an easy-open structure that is easy to open without separating a part of the bag body as garbage. The present invention also relates to a bag body having an easy-to-open structure that is easy to open without separating a part of the bag body as dust even if a fastener is provided so that it can be repeatedly opened and closed.
  • bags for housing food, medical products, cosmetics, and the like bags with four or three sides sealed around the bag and bags such as self-supporting gusset bags are provided. Some of these bags are provided with a cut portion that becomes a starting point of opening in a part of the bag so that the bag can be easily opened. However, when the bag body is cut along the cut portion, there is a problem that the cut piece is separated from the bag body and easily generates dust.
  • the bag body when the bag body is cut open, the bag body is deformed, and for example, if the contents such as potato chips confectionery are the contents, a part of the contents collapses.
  • the slit opening when the slit opening is larger than expected, the contents are easily spilled from the bag, and when the opening is smaller than expected, the contents are difficult to be taken out.
  • important display portions such as the cooking method display column and the campaign application column are broken.
  • the back-sealed seal bag body where both side edges of the bag body are bonded so as to be in the position of the back surface of the bag body, the back-sealed seal portion is picked with the fingertip of one hand, and the side opposite to the back-sealed seal portion
  • the sheet surface may be picked with the fingertip of the other hand and pulled outward to be opened.
  • Patent Document 1 discloses a packaging bag technology in which a plurality of line-like horizontal seal portions formed as opening portions of a bag body are provided with a plurality of linear vertical stripe seal portions extending in a direction intersecting therewith. It is disclosed. Thereby, when opening, it cuts along a vertical bar seal, the opening direction will follow the direction of a vertical bar seal, and it is supposed that the opening direction of a bag body will be stabilized.
  • the opening direction of the bag body is stable and easy to open by this technique, the problem that the important display portion and the like are easily broken to generate dust pieces has not been solved. Further, at the stage of tearing the contents-accommodating portion beyond the vertical seal portion, there is a problem that the opening direction is not always stable and the contents such as potato chips confectionery are easily broken. Furthermore, the bag body provided with the fastener so that it can be repeatedly opened and closed has a problem that the vertical stripe seal cannot be arranged in the direction intersecting with the fastener.
  • Patent Document 2 discloses a technique relating to a heat sealing device that performs sealing so that contents can be easily taken out.
  • Patent Document 2 discloses a bag body in which a first seal region portion having a high tear strength and a second seal region portion having a low tear strength are provided on a part of a pressure-bonding surface of a packaging bag.
  • Patent Document 3 discloses a technique of a bag body with good opening workability that can widen the opening opening and easily take out contents such as a wet sheet from the bag body.
  • a non-seal in which a difficult-to-open seal part having a peel strength that is difficult to peel off and an easy-open seal part having a peel strength that is easy to peel off are included, and the starting point of the peel is formed at the corner of the package It is said to be an area. Starting from the non-sealed region at the corner, the corner is peeled off from the corner to the easy-open seal portion to facilitate peeling and widen the opening.
  • Patent Document 4 discloses a technique of a bag body that can be opened reliably and easily in a state where a packaging bag is held with one hand without separating the opening pieces.
  • a packaging bag technology with a three-layer sheet having a support base material layer as a central layer, a sealant layer on the inner surface side, and an easy peel adjustment layer whose peelability is adjusted on the outer surface side. It is disclosed. And, the sealant layer on the inner surface side and the easy peel adjustment layer on the outer surface side are overlapped as the overlapping portion and heat sealed, so that it can be opened easily even with one hand and the opened piece should not be made garbage Has been.
  • Patent Document 5 discloses a technique for easily opening an opening seal portion of a pillow type package.
  • the opening seal portion is formed so as to be an oblique seal orthogonal to the peeling line.
  • the both sides of the sheet at a position within 40 mm downward from the opening seal part are taken as the holding position O, and the part is picked and opened, so that the part with the low opening strength is increased. It can be opened toward the front and is easy to open.
  • Patent Document 1 Japanese Patent Laid-Open No. 2006-347587
  • Patent Document 2 Japanese Patent Laid-Open No. 2012-184032
  • Patent Document 3 Japanese Patent Laid-Open No. 2013-6616
  • Patent Document 4 Japanese Patent Laid-Open No. 2013-52919
  • Patent Document 5 Japanese Patent Laid-Open No. 2013-52919 2008-162664
  • the problem to be solved by the present invention is to provide a bag body having an easy-open structure that is easy to open without separating a part of the bag body as garbage. Furthermore, even if it is provided with a fastener so that it can be repeatedly opened and closed, it is to provide a bag body having an easy-open structure that is easy to open without separating a part of the bag body as garbage.
  • a bag body is a bag body for containing contents, and includes a linearly extending opening portion that seals the first sheet inner surface and the second sheet inner surface, An easy-to-open portion that is sealed by thermal welding and that is the starting point of opening is included, and the easy-to-open portion has an area density of the heat-welded portion per unit length along a line along which the opening portion extends. It is characterized by being made smaller than the area density of the heat-welded part per unit length at a position adjacent to the easy part.
  • the state of the contents accommodated in the bag is not limited to a solid or granular body, but may be a powder, a fluid, or the like, and the type of the contents is not limited.
  • the shape of the bag body is not limited, and may be a cylindrical shape, a planar shape, a gusset bag shape, or the like, and the number of sheets constituting the bag body is not limited.
  • the material of the bag body is preferably a resinous material or a resin-coated paper.
  • the opening part may be connected linearly to form a sealing part, may be connected in an annular shape, may extend along a straight line, may form a curved line, a bent line, and a back-sealed seal It may be the position of the part.
  • the position of the easy-to-open portion may be either the center position of the opening portion, the position separated from the end portion of the opening portion, or any position. Further, the heat-sealing of the opening portion may be performed by any of heat sealing, hot melt adhesive, and the like. When the content is food, it is preferable for hygiene to use a heat seal as a sealing means.
  • the opening portion means a portion provided along the opening of the bag body.
  • the welding of the opening part may be a spot-like welded part, a line-like welded part, or a welded part formed by mixing them.
  • the area density of the heat-welded portion per unit length along the line along which the unsealed portion extends is made smaller than the area density of the heat-welded portion per unit length at the adjacent position.
  • the change in the area density may be due to the change in the density of the heat-welded portion, that is, the number of welding points in the case of spot welding and the length and thickness in the case of linear welding.
  • the easy-opening structure in which the area density of the heat-welding part is reduced from both sides of the easy-opening part to the easy-opening part along the opening part is formed in steps from both sides of the easy-opening part,
  • the density of the part may be reduced, or the density of the heat welded part may be gradually reduced.
  • the easy-to-open structure may be provided on the entire opening part or may be provided on a part thereof.
  • the first sheet inner surface and the second sheet inner surface are separated from the position of the easy opening portion, and the opening portion is peeled off and opened.
  • the bag is not cut from the notch for opening, and a part of the bag is cut and not separated.
  • the bag according to the first aspect wherein the opening portion includes at least one continuous closing line along a line extending the opening portion. It is a feature.
  • the easy-opening portion includes at least one continuous closing line along the line along which the opening portion extends, so that the airtightness of the opening portion is maintained. As a result, the contents are not dampened during transfer and display by external moisture, and the quality of the contents is maintained.
  • the third invention of the present invention is the bag body of the second invention, characterized in that the closing line is provided on the side of accommodating the contents in the opening portion.
  • the closing line is provided on the side of accommodating the contents in the opening portion.
  • a fourth invention of the present invention is the bag body of the first to third inventions, wherein the back-sealed seal portion in which both edges of the first sheet inner surface and the second sheet inner surface are bonded is a back surface portion.
  • the bag is formed in a substantially central part of the bag, and the easy-to-open part is provided in the vicinity of the substantially central part.
  • both side edges of the bag body are bonded together to form a back-sealed seal portion.
  • a back sticking seal part is formed in the approximate center of the back part of a bag, and located in the outside of either the 1st sheet or the 2nd sheet, it can be used as a knob part. is there.
  • the fifth invention of the present invention is the bag body of the first to fourth inventions, characterized in that the opening portion is formed by being bent into a substantially U-shape.
  • the bag body can be formed into a cylindrical body having a large opening by folding the folding start point. Thereby, it becomes easy to take out the contents.
  • 6th invention of this invention is a bag body of 1st-5th invention, Comprising: A streaky convex part and a streaky recessed part are occluded by the contents accommodating part side of the said opening part, and a sealing part It is characterized by being equipped with a zipper.
  • the fastener may be closed or open. When the fastener is closed, the contents are not easily clogged, and if the fastener is open, the opening is easy to open.
  • the opening part is easily opened, it is possible to isolate the contents of the bag from the outside, and repeatedly seal and open while keeping moisture-sensitive contents in a good state. It is possible. Furthermore, if the fifth invention is applied to the fourth invention, it is possible to return the bent starting point and take out the contents so as not to be caught by the fastener.
  • it is suitable for a bag body in which powder or moist food is taken as a content and is repeatedly taken out without clogging the zipper. Even if the content is a granular material containing moisture, such as a wet sprinkle for rice, there is an advantageous effect that it can be repeatedly sealed and opened without clogging the fastener.
  • the seventh invention of the present invention is the bag body of the first to sixth inventions, characterized in that an open end portion that is opened is provided on the outer side of the opening portion.
  • the opening part of a bag body is peeled by picking and separating an open end part, and a bag body is opened.
  • the eighth invention of the present invention is the bag body of the first to seventh invention, comprising a protruding end on the outer side of the unsealing portion of each of the first sheet and the second sheet, Each of the protruding end portions is formed in a different shape.
  • a semicircular knob is adjacent to and formed at a different position at a substantially central position of the protruding end portion of each sheet, inward from the protruding end portion.
  • a knob may be formed by protruding in the direction. Further, the leading ends of the respective sheets may be formed in steps. The outer edge of the protruding end portion may be open or may be easily opened by a perforation. Since each projecting end is formed in a different shape, it becomes easier to pick the knob with the fingertips of both hands, and the first sheet and the second sheet of the unsealed part are separated on both sides. It becomes easy to open it.
  • the easy-to-open portion can be It is possible to avoid a situation in which the bag body is naturally opened by deformation, and the heat-sealed part of the easy-to-open part can be easily opened if even the closing line is picked and opened by the finger.
  • a folding origin is turned up, it is possible to make a bag body into a cylinder with a big opening. Thereby, it becomes easy to take out the contents.
  • the bag body can be sealed and isolated from the outside, and can be repeatedly sealed and opened. It is possible to take out the folding start point and take out the contents so as not to be caught by the fastener, and it is possible to take out the contents such as powder and damp food without clogging the fastener.
  • it is easy to pinch the sheet surfaces on both sides of the opening portion by providing an open end portion that is opened outward from the opening portion of the bag body, It becomes easy to open the bag.
  • each protrusion edge part is formed in the different shape, it becomes easy to pick the said knob
  • Explanatory drawing (Example 1) of the easy-open structure of the bag body provided with a back sticker seal part Explanatory drawing of structure for easy opening (Example 1)
  • Explanatory drawing (Example 2) of the bag body by which an easy-open structure is provided in a back sticker seal part Explanatory drawing of the easy-open structure of the bag body provided with a fastener
  • Explanatory drawing (Example 4) of the easy-opening structure of the bag body provided with the bent corner and the fastener Explanatory drawing of the bag body with which the open end part open
  • Explanatory drawing of the bag body by which a protrusion edge part is provided in the outward side of an opening part Example 6
  • the bag body from Example 1 to Example 6 includes a bag body including an easy-to-open structure provided with an easy-to-open portion having a small area density of the heat-welded portion that is the starting point of opening at the opening portion of the bag body. It is. In any of the embodiments, it is needless to say that the strength of the welding and the closing means are not limited for the closed portion of the bag body other than the opening portion.
  • the bag body 1 is provided with an opening 10 at the upper edge of the bag body 1, and the back side of the bag body 1 is provided with a back-sealed seal section 20.
  • the bag 1 is suitable for use in, for example, potato chips confectionery.
  • FIG. 1 is an explanatory view of the bag body 1 as viewed from the back side
  • FIG. 2 is an explanatory view of another example of the easy-to-open structure 40.
  • the bag body 1 is provided with a substantially linear opening portion 10 at the upper edge of the bag body 1, and an opening easy portion 30 that is the starting point of opening is provided at the approximate center of the opening portion 10.
  • the starting point of opening refers to a position where peeling of the opening portion 10 is started when the bag body 1 is opened.
  • a back-sealed seal portion 20 is provided in the approximate center of the back side of the bag body 1 (see FIG. 1).
  • the back-sealed seal portion 20 is formed by heat-sealing the inner surfaces of both end edges of the sheet body forming the bag body 1.
  • the opening part 10 is a heat seal composed of a closing line 11 and a dot-like heat seal 12.
  • the closing line 11 provided on the outer side of the opening portion 10 is located on the content accommodating portion 50 side so that the height of the opening portion 10 becomes the smallest from the both end portions 13 toward the opening easy portion 30. It is bent and formed in a substantially V shape. As a result, the bag body 1 is sealed, and foreign substances such as dust are prevented from being mixed. Further, since the linear closure line 11 is provided on the content container 50 side, the airtightness of the opening part 10 is maintained, and the easy opening part is deformed by the pressure inside the bag body 1, The situation where the bag 1 is naturally opened can be avoided.
  • the dot-shaped heat seals 12 are provided between the closed lines 11 provided inside and outside, and are formed so that the number thereof is gradually reduced from the both end portions 13 toward the easy-to-open portions 30.
  • the thickness, number, interval, shape, etc. of the closing line 11 and the size, number, interval, etc. of the dot-shaped heat seal 12 are not limited, and are adjusted according to the opening strength required for the easy opening portion. Just do it. In addition, you may provide the closing line 11 only in the content storage part side of a bag.
  • the opening strength required for opening the opening portion 10 can be adjusted by the closing line 11 and the dot heat seal 12.
  • the area density of the heat-welded part of the opening part 10 can be reduced by reducing the thickness of the closing line 11 or reducing the density of the dot-shaped heat seal 12.
  • the easy-to-open structure 40 with less force required for peeling the opening portion 10 per unit length than the adjacent positions is formed.
  • the number of dot-like heat seals 12 is gradually reduced from the both end portions 13 side of the opening portion 10 toward the center, and the area density of the heat-welded portion per unit length is small compared to the adjacent positions.
  • An easy portion 30 is formed.
  • the number of dot-like heat seals 12 is increased toward both sides of the opening part 10. Accordingly, the area density of the heat welded portion is gradually increased from the easy-to-open portion 30 toward both sides, the heat seal is gradually peeled from the easy-open portion 30 to both sides, and the bag body is not detached from the open portion 10. Is opened. In addition, since the contents storage portion 50 is not cut open at the time of opening, the important display portions 60 such as the cooking method display column, the component display column, the inquiry display column, and the campaign application column are not damaged.
  • the easy-open structure 40 may be provided in the whole opening part 10, and may be provided in one part.
  • the edge part of the opening part of a bag is shown with a dashed-dotted line, and the opening easy structure 40 in the opening part 10 is divided with a double wavy line, and the principal part is demonstrated.
  • the easy-open structure 40 is not limited to the example shown below that changes the density per unit length along the line along which the open portion extends.
  • FIG. 2 (A) is a diagram showing an easy-to-open structure 41 in which dot-like heat seals 12 are provided on both sides of the easy-to-open portion 30.
  • this easy-to-open structure 41 the number of dot-like heat seals 12 is reduced stepwise toward the easy-open portion 30, and the area density of the heat-welded portion per unit length along the line where the open portion extends is changed. ing.
  • the opening part 10 is not provided with the closing line 11, and the content accommodating part is not completely sealed.
  • This example is suitable for use in packaging bread that is not suitable for sealing, or for packaging items that do not require sealing.
  • the stepped shape may be bilaterally symmetric.
  • FIG. 2 (B) is a diagram showing an easy-to-open structure 42 provided with a closing line 11 along the opening 10 on the inner side of the dot-shaped heat seal 12.
  • the dot-shaped heat seal 12 on the outer side of the bag body is formed in a substantially V shape toward the inner side of the bag body, and the dot-shaped heat seal 12 is formed along the opening portion 10 on the inner side. Is provided.
  • the V shape may be symmetrical.
  • the number of dot-like heat seals 12 in the opening part 10 is gradually reduced toward the opening easy part 30 in a substantially V shape, and is along a line where the opening part extends compared to the adjacent position.
  • the area density of the heat-welded portion per unit length is reduced toward the easy-to-open portion 30.
  • the linear closure line 11 is provided in the inner side of the opening part 10, the situation where the opening easy part 30 deform
  • FIG. 2 (C) is a diagram showing an easy-to-open structure 43 in which the opening portion 10 includes a plurality of transverse linear heat seals 14 having different lengths from the closing line 11.
  • the linear heat seal 14 is gradually shortened toward the inner side of the bag body, and the area density of the heat-welded portion per unit length along the line in which the opened portion extends is adjacent to the position. As compared with the above, it is made small toward the easy-to-open portion 30.
  • the linear closure line 11 is provided in the outward side, it is suitable in the case of the content which needs airtightness.
  • FIG. 2 (D) is a diagram showing an easy-open structure 44 in which the closing line 11 is provided on both the outer side and the inner side of the opening portion 10.
  • the outer closing line 11 is formed to be bent in a substantially V shape toward the inner side of the bag body.
  • the inner closing line 11 is formed linearly along the opening 10.
  • a dot-like heat seal 12 is provided between the closed lines 11. As the number of dot-shaped heat seals 12 is gradually reduced toward the easy-opening portion 30, the area density of the heat-welded portion per unit length along the line along which the openable portion extends is reduced toward the easy-opening portion 30.
  • the opening strength has been changed. Since the closing line 11 is provided on both the outer side and the inner side of the opening part 10, opening the bag body of contents that need to be airtight and prevent foreign matters from being mixed in. It is preferable to apply to the part.
  • FIG. 2 (E) is a diagram showing an easy-to-open structure 45 provided with a plurality of longitudinal linear heat seals 15 having different lengths.
  • the linear heat seal 15 By reducing the length of the linear heat seal 15 per unit length along the line along which the opening portion extends toward the opening easy portion 30, the area density of the heat welded portion is changed, and the opening strength is changed. Yes.
  • the opening part 10 By allowing air to pass between the linear heat seals 15, it is suitably used for packaging contents that are not suitable for sealing.
  • the opening part 10 may be provided with a closing line 11 to seal the bag.
  • FIG. 2 (F) is a diagram showing an easy-to-open structure 46 composed of a plurality of longitudinal linear heat seals 16 having the same length and different intervals.
  • the interval between the linear heat seals 16 in the vertical direction is gradually increased toward the easy opening portion 30 along the line where the opening portion extends, so that the unit length is longer than the position where the easy opening portion 30 is adjacent.
  • the area density of the heat welded portion is reduced.
  • the opening part 10 may be provided with a closing line 11 to seal the bag.
  • FIG. 2 (G) is a diagram showing an easy-to-open structure 47 in which the lengths and the intervals are the same, and the thickness of the plurality of linear heat seals 17 in the vertical direction is changed.
  • the thickness of the linear heat seal 17 in the vertical direction is gradually reduced toward the easy-to-open portion 30, the area density of the heat-welded portion per unit length compared to the position where the easy-open portion 30 is adjacent.
  • the opening part 10 may be provided with a closing line 11 to seal the bag.
  • the material of the bag body provided with the easy-open structure described in FIG. 1 or FIG. 2 is not limited, and may be by any means such as cohesive peeling, delamination, and interface peeling.
  • cohesive peeling a sheet in which polypropylene and polyethylene are mixed so as to be easily opened may be used.
  • delamination a laminated film made of polypropylene or the like may be used.
  • interfacial peeling an easily adhesive resin such as EVA may be used.
  • Example 2 with reference to FIG. 3 in which a confectionery bread is housed in a bag body, a bag body 2 in which an opening portion 10 is provided on a back-sealed seal portion 20 of the bag body 2 extending in a cylindrical shape will be described (FIG. 3A (See the figure).
  • the easy-to-open portion 30 is provided at a position closer to one end portion 22 than the central portion 21 of the back-sealed seal portion 20.
  • the position where the easy-to-open portion 30 is provided is not limited, but the bag body 2 is not opened unnecessarily large by opening from the position close to the end side, and the cylindrical body
  • the end opening portion is also preferable in that it is easy to open.
  • the confectionery bread 51 To eat the confectionery bread 51, the confectionery bread 51 must be pulled out of the bag 2. However, since the confectionery bread 51 is damp, it was difficult to draw out due to friction with the inner surface of the bag body 2. Further, in the conventional heat seal, since the break line of the bag body is warped from the back-sticking seal portion 20 and the bag body is torn, it is difficult to open the bag body along the back-sticking seal portion 20. Therefore, it was necessary to pick out the confectionery bread directly with a finger, which was unsanitary.
  • the bag body 2 of Example 2 is suitable for a food or the like that is elongated and damp like the confectionery bread 51 and is difficult to be pulled out from the bag body.
  • Example 3 a bag body 3 in which three sides are sealed and one side is heat-sealed as an opening will be described with reference to FIG.
  • the upper edge 80 of the bag 3 is the opening part 10, and an opening easy structure 40 provided with the opening easy part 30 is provided, and a fastener 70 is provided on the inner side thereof.
  • the shape and the like of the fastener 70 are not limited as long as the line-shaped convex part and the line-shaped concave part are engaged and the bag body 3 can be repeatedly sealed and opened. Since the bag body 3 can be repeatedly sealed and opened, the contents are protected from insects, moisture, dust and the like. Therefore, it is suitable to be used for foods that cannot be eaten at one time, such as rice cake and flour.
  • Example 4 a bag body 4 in which a folded corner portion 18 is provided in the opening portion 10 of the bag body will be described with reference to FIG.
  • the opening portion 10 is provided with two bent corner portions 18 to form a substantially U-shaped opening portion.
  • a substantially U-shaped bent fastener 71 is provided on the inner side of the opening portion 10 along the opening portion 10 (see FIG. 5A).
  • the easy-open structure 40 is provided on the opening side of the bag body.
  • the content is a wet sheet 53
  • the bag body 4 is opened from the end side of the opening portion 10 that is substantially U-shaped from the opening easy portion 30, and is folded and opened at the starting point of the opening portion.
  • the smooth part 55 of the inner surface of the bag body 4 is used as the opening end part 56 which takes out the wet sheet 53 (refer FIG.5 (B) figure).
  • the bag body 4 according to the fourth embodiment is also suitable for flat-shaped contents such as a mask.
  • the opening portion 10 is folded outward from the fastener base end 72, and the inner surface of the bag body provided with the convex portion 73 and the concave portion 74 of the bent fastener 71 is folded outward (FIG. 5C). (See figure). Then, it is possible to sprinkle the sprinkling 57 outside with the sprinkling 57 not touching the convex portion 73 and the concave portion 74 of the bending fastener 71. Thereby, the bending fastener 71 is brought into close contact with the convex portion 73 and the concave portion 74 of the bending fastener 71 without being clogged. Further, foreign matters are not mixed in the bag body 4, and mold is prevented from being generated in the bag body 4.
  • the bag body 4 of Example 4 is also suitable for powdered materials such as wheat flour.
  • Example 5 a bag body 5 provided with an open end 90 on the outer side of the opening 10 will be described with reference to FIG.
  • the bag body 5 is a gusset bag having a bottom surface, and the opening portion 10 is provided with an easy opening structure 40 provided with an opening easy portion 30, and an open end 90 is provided on the outer side of the opening portion 10. Is provided.
  • the bag body 5 may be opened by picking the open end 90 with a finger and separating it.
  • the open end 90 on the outer side of the opening part 10 the top sheet 91 and the back sheet 92 can be easily picked and separated by the fingertips, and the bag body 5 can be easily opened. It becomes.
  • Example 6 with reference to FIG. 7, a bag body 6 is described in which a protruding end portion is provided on the outer side of the opening portion and the shape of the topsheet 101 and the backsheet 102 is different.
  • An opening portion 10 is provided on the upper edge side of the bag body 6, and a protruding end portion 100 is provided on the outer side of the opening portion 10.
  • a semicircular knob portion 103 is formed adjacent to and inward of the protruding end portion at a different position. Thereby, only one sheet surface of the bag body 6 can be easily picked.
  • the easy-to-open part 30 is peeled off and the bag body 6 is opened by picking the place where the knob 103 is provided with the fingertip 104 and separating the top sheet 101 and the back sheet 102.
  • the opening portion is provided on the upper edge of the bag body.
  • the present invention is not limited thereto, and the opening portion is provided on the lower edge or side edge of the bag body. Also good.
  • FIG. 2 various examples of the opening portion are shown, but it is needless to say that the present invention is not limited to these examples and can be modified without departing from the spirit of the present invention.
  • Example 6 an example of a bag body provided with a notch in the vicinity of the easy-to-open portion has been described.
  • the bag body may be overlapped on the top sheet and the back sheet so as to be stepped, and may be picked by a protruding tongue piece. You may form a momi part.
  • an example of a bag body sealed by heat sealing has been described.
  • the present invention is not limited to this, and a bag body sealed using an adhesive or the like may be used.
  • the embodiment disclosed this time should be considered as illustrative in all points and not restrictive.
  • the technical scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.
  • fasteners 71 ... bent fasteners, 72 ... Fastener base end, 73 ... Convex part, 74 ... Concave part, 80 ... Upper edge, 81 ... Both sides, 82 ... Lower edge, 90 ... Open end, 91, 101 ... Top sheet, 92, 102 ... Back sheet, 100 ... protruding end, 103 ... notch, 104 ... fingertip

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  • Bag Frames (AREA)

Abstract

The present invention addresses the problem of providing a bag with an easy-open structure that is easy to open without separating a portion of the bag as trash. In this bag (1), the seal-opening section where the inner surface of a first sheet is sealed to the inner surface of a second sheet by heat-sealing comprises an easy-open section (30). The easy-open section (30) serves as the starting point for the seal-opening and the area density per unit length of the heat-sealed section in the easy-open section (30) is less than the areas adjacent to the easy-open section (30).

Description

袋体Bag
 本発明は、食料品、医療品又は化粧品等の内容物を収容する袋体に関する。詳細には、袋体の一部をゴミとして分離させることなく、開封容易とされている開封容易構造を備えた袋体に関する。また、繰り返し開閉できるようにファスナーを備えていても、袋体の一部をゴミとして分離させることなく、開封容易とされている開封容易構造を備えた袋体に関する。 The present invention relates to a bag for storing contents such as food, medical products, and cosmetics. Specifically, the present invention relates to a bag body having an easy-open structure that is easy to open without separating a part of the bag body as garbage. The present invention also relates to a bag body having an easy-to-open structure that is easy to open without separating a part of the bag body as dust even if a fastener is provided so that it can be repeatedly opened and closed.
 食料品、医療品、又は化粧品等を収容するための袋体として、袋体周縁の四方又は三方をシールした袋、自立式のガゼット袋等の袋体が提供されている。これらの袋体には、開封が容易とされるように、袋体の一部に切り開きの起点となる切れ込み部が設けられているものがある。しかし、切れ込み部に沿って袋体を切り開いた場合には、切り開き片が袋体本体から分離して、ゴミを発生させやすいという課題があった。 As bags for housing food, medical products, cosmetics, and the like, bags with four or three sides sealed around the bag and bags such as self-supporting gusset bags are provided. Some of these bags are provided with a cut portion that becomes a starting point of opening in a part of the bag so that the bag can be easily opened. However, when the bag body is cut along the cut portion, there is a problem that the cut piece is separated from the bag body and easily generates dust.
 また、袋体の切り開きの際に、袋体がいびつに変形し、例えばポテトチップス菓子のような物が内容物である場合には、内容物の一部が崩れてしまう。また、切り開き口が、想定よりも大きくなってしまった場合には内容物が袋体からこぼれやすく、想定よりも小さくなってしまった場合には内容物が取り出しにくい。切り開き位置が想定位置からずれてしまった場合には、調理方法表示欄、キャンペーン応募欄等の重要表示部分が破れる。 Also, when the bag body is cut open, the bag body is deformed, and for example, if the contents such as potato chips confectionery are the contents, a part of the contents collapses. In addition, when the slit opening is larger than expected, the contents are easily spilled from the bag, and when the opening is smaller than expected, the contents are difficult to be taken out. When the opening position is shifted from the assumed position, important display portions such as the cooking method display column and the campaign application column are broken.
 切り開いた部分が、袋体本体から分離され、切り開き片となった場合には、切り開き片がゴミ片となって風に飛ばされ易く、登山やキャンプ等の際に風致・環境を害しやすい。また、幼児やペットが、ゴミ片を誤って口にした場合には、事故となる可能性がある。 When the cut part is separated from the bag body and becomes a cut piece, the cut piece is easily thrown into the wind as garbage, and the weather and environment are liable to be damaged when climbing or camping. Also, if an infant or pet accidentally puts a piece of garbage into the mouth, there is a possibility of an accident.
 一方で、袋体の背面部の位置になるように、袋体の両側縁が貼り合わされた背貼りシール袋体は、背貼りシール部を片手の指先で摘み、背貼りシール部とは反対側のシート面を他方の手の指先で摘まんで、外方に引っ張って開封されることもある。しかし、開封口を封鎖しているヒートシールの溶着が強い場合には、指先が滑りやすい場合や、力の弱い幼児や高齢者等には、指先で摘まんで引っ張る開封作業が困難であるという課題があった。 On the other hand, the back-sealed seal bag body where both side edges of the bag body are bonded so as to be in the position of the back surface of the bag body, the back-sealed seal portion is picked with the fingertip of one hand, and the side opposite to the back-sealed seal portion The sheet surface may be picked with the fingertip of the other hand and pulled outward to be opened. However, when the heat seal that seals the opening is strong, the fingertips are slippery, and it is difficult for infants and elderly people with weak power to open and pull with their fingertips. was there.
 特許文献1には、袋体の開封部として形成された複数の筋目状の横シール部に、それと交差される方向に伸びる複数の線状の縦筋シール部が備えられた包装袋の技術が開示されている。これにより、開封の際に、縦筋シールに沿って切り開くことで、その開封方向が縦筋シールの方向に沿うこととなり、袋体の開封方向が安定するとされている。 Patent Document 1 discloses a packaging bag technology in which a plurality of line-like horizontal seal portions formed as opening portions of a bag body are provided with a plurality of linear vertical stripe seal portions extending in a direction intersecting therewith. It is disclosed. Thereby, when opening, it cuts along a vertical bar seal, the opening direction will follow the direction of a vertical bar seal, and it is supposed that the opening direction of a bag body will be stabilized.
 しかし、この技術によって袋体の開封方向が安定して開封が容易になっても、重要表示部分等を破断させ、ゴミ片を発生させやすいという課題は解決されていなかった。また、縦筋シール部分を超えて内容物収容部分を引裂く段階では、必ずしも開封方向が安定せず、崩れやすい内容物、例えばポテトチップス菓子等の内容物が崩れやすいという課題があった。更に、繰り返し開閉できるようにファスナーを備えた袋体には、ファスナーと交差する方向に縦筋シールを配置できないという課題があった。 However, even if the opening direction of the bag body is stable and easy to open by this technique, the problem that the important display portion and the like are easily broken to generate dust pieces has not been solved. Further, at the stage of tearing the contents-accommodating portion beyond the vertical seal portion, there is a problem that the opening direction is not always stable and the contents such as potato chips confectionery are easily broken. Furthermore, the bag body provided with the fastener so that it can be repeatedly opened and closed has a problem that the vertical stripe seal cannot be arranged in the direction intersecting with the fastener.
 また、特許文献2には、内容物を容易に取り出すことができるようなシールを行うヒートシール装置についての技術が開示されている。特許文献2には、包装袋の圧着面の一部に引裂き強度が強い第1シール領域部分と、引裂き強度が弱い第2シール領域部分とが設けられた袋体が開示されている。 Further, Patent Document 2 discloses a technique relating to a heat sealing device that performs sealing so that contents can be easily taken out. Patent Document 2 discloses a bag body in which a first seal region portion having a high tear strength and a second seal region portion having a low tear strength are provided on a part of a pressure-bonding surface of a packaging bag.
 しかし、この技術により袋体の開封が容易になり、内容物の取り出しが容易になっても、特許文献1の技術と同様に、重要表示部分等を破断させ、ゴミ片を発生させやすい。また、内容物収容部分を引裂く段階では、ポテトチップス菓子等の内容物が崩れやすい。更に、繰り返し開閉できるようにファスナーを備えた袋体には適用できないという課題もあった。 However, even if the opening of the bag body is facilitated by this technique and the contents can be easily taken out, as in the technique of Patent Document 1, the important display portion and the like are easily broken to easily generate dust pieces. Further, at the stage of tearing the contents-accommodating portion, contents such as potato chips confectionery are liable to collapse. In addition, there is a problem that it cannot be applied to a bag body provided with a fastener so that it can be repeatedly opened and closed.
 また、特許文献3には、開封口を大きく広げて、ウェットシート等の内容物を、袋体から容易に取り出すことができる開封作業性のよい袋体の技術が開示されている。具体的には、剥離し難い剥離強度を有する難開封シール部と、剥離し易い剥離強度を有する易開封シール部とが含まれ、さらに剥離の起点が包装体の角部に形成される非シール領域であるとされている。角部の非シール領域を起点として、角部から易開封シール部へと剥離させ、剥離が容易であると共に開封口を広くしている。 Also, Patent Document 3 discloses a technique of a bag body with good opening workability that can widen the opening opening and easily take out contents such as a wet sheet from the bag body. Specifically, a non-seal in which a difficult-to-open seal part having a peel strength that is difficult to peel off and an easy-open seal part having a peel strength that is easy to peel off are included, and the starting point of the peel is formed at the corner of the package It is said to be an area. Starting from the non-sealed region at the corner, the corner is peeled off from the corner to the easy-open seal portion to facilitate peeling and widen the opening.
 しかし、角部の非シール片を起立させて摘まむことが困難であり、非シール片を摘まんで引きはがす際に、剥がれ始めている易開封シール部の近傍では第1のシートと第2のシートが接近するため、内容物がシートに挟まれやすく、この技術は崩れやすい内容物には適用できないという課題が想定される。また、この技術による袋体を、繰り返し開閉できるようにファスナーを備えた袋体に適用すると、角部の非シール片が捲れ上がりやすいため、不用意に捲れ上がって、開封口が開いてしまう可能性があるという課題があった。 However, it is difficult to stand and grip the non-seal piece at the corner, and when the non-seal piece is picked and peeled off, the first sheet and the second sheet are in the vicinity of the easy-open seal part that has begun to peel off. Therefore, the content is likely to be sandwiched between sheets, and there is a problem that this technology cannot be applied to the content that is easily broken. In addition, if this bag is applied to a bag with a zipper so that it can be opened and closed repeatedly, the non-seal pieces at the corners can easily be rolled up, so that they can be rolled up inadvertently and open the opening. There was a problem that there was sex.
 特許文献4には、開封片を分離させないで、片手で包装袋を保持した状態で、確実かつ容易に開封可能とされる袋体の技術が開示されている。具体的には、支持基材層を中心層として、内面側にはシーラント層、外面側には剥離性が調整されたイージーピール調整層とを備えた三層からなるシートによる包装袋の技術が開示されている。そして、内面側のシーラント層と外面側のイージーピール調整層とが、重ね合わせ部として重ねられてヒートシールされることで、片手でも開封容易な開封部とされると共に開封片をゴミとしないとされている。 Patent Document 4 discloses a technique of a bag body that can be opened reliably and easily in a state where a packaging bag is held with one hand without separating the opening pieces. Specifically, there is a packaging bag technology with a three-layer sheet having a support base material layer as a central layer, a sealant layer on the inner surface side, and an easy peel adjustment layer whose peelability is adjusted on the outer surface side. It is disclosed. And, the sealant layer on the inner surface side and the easy peel adjustment layer on the outer surface side are overlapped as the overlapping portion and heat sealed, so that it can be opened easily even with one hand and the opened piece should not be made garbage Has been.
 しかし、ファスナーが備えられた繰り返し開閉できる袋体に、この技術を適用すると以下の課題が発生する。袋体の端部近傍位置に重ね合わせ部を形成させて、その内方にファスナーを設けた開封部構造とした場合には、開封した後には、端部近傍位置で重ね合わせ部が開かれた状態となり、重ね合わせられていた部分が袋体の外側に突出して伸び、埃等の異物が溜まって混入しやすくなる。重ね合わせ部を袋体縁部から離間させて内方に形成させた場合には、ファスナーの外方に、折れ曲がった状態の袋体が長く突出することとなり、この場合にも異物が混入しやすく、内容物が取り出しにくくなり、繰り返し開閉できるようにファスナーを備えた袋体には、この技術は適用できなかった。 However, when this technology is applied to a bag body that can be repeatedly opened and closed with a fastener, the following problems occur. When the overlapping part is formed in the vicinity of the end of the bag body and the opening part structure is provided with a fastener on the inside thereof, the overlapping part is opened in the vicinity of the end after opening. As a result, the overlapped portion protrudes to the outside of the bag body and extends, so that foreign matters such as dust are accumulated and easily mixed. If the overlapping part is formed inwardly away from the bag edge, the folded bag will protrude long outside the fastener, and in this case also foreign matter is likely to enter. This technique cannot be applied to a bag body provided with a zipper so that the contents are difficult to take out and can be repeatedly opened and closed.
 特許文献5には、ピロータイプの包装体の開封シール部分を開封容易とする技術が開示されている。具体的には、開封シール部分を、剥離線と直交する斜めのシールとなるように形成したものである。そして、開封部の略中央部で、開封シール部分から下方に40mm以内までの位置のシートの両側を、持ち位置O点として、そこを摘まんで開封することにより、開封強度が小さい部分から大きい部分に向けて開封可能であり、開封が容易とされている。 Patent Document 5 discloses a technique for easily opening an opening seal portion of a pillow type package. Specifically, the opening seal portion is formed so as to be an oblique seal orthogonal to the peeling line. And in the substantially central part of the opening part, the both sides of the sheet at a position within 40 mm downward from the opening seal part are taken as the holding position O, and the part is picked and opened, so that the part with the low opening strength is increased. It can be opened toward the front and is easy to open.
 しかし、この技術による場合には、収容部が窒素封入等により加圧された場合には、両側のフィルムが離間するように加圧され、斜めシール部分が剥離されるという課題が発生する可能性がある。また、開封シール部分の幅を高くとれない場合には、シール下辺の2つの接点の間隔が短くなり、持ち位置O点が開封シールに接近し、両側フィルムが摘まみにくく、開封容易とならないという課題がある。 However, in the case of this technique, when the accommodating part is pressurized by nitrogen sealing or the like, there is a possibility that the film on both sides is pressurized so as to be separated and the oblique seal part is peeled off. There is. In addition, when the width of the opening seal portion cannot be increased, the distance between the two contacts on the lower side of the seal is shortened, the holding point O approaches the opening seal, and the films on both sides are not easily picked, and the opening is not easy. There is.
特許文献1:特開2006-347587号公報
特許文献2:特開2012-184032号公報
特許文献3:特開2013-6616号公報
特許文献4:特開2013-52919号公報
特許文献5:特開2008-162664号公報
Patent Document 1: Japanese Patent Laid-Open No. 2006-347587 Patent Document 2: Japanese Patent Laid-Open No. 2012-184032 Patent Document 3: Japanese Patent Laid-Open No. 2013-6616 Patent Document 4: Japanese Patent Laid-Open No. 2013-52919 Patent Document 5: Japanese Patent Laid-Open No. 2013-52919 2008-162664
 本発明が解決しようとする課題は、袋体の一部をゴミとして分離させることなく、開封容易とされている開封容易構造を備えた袋体を提供することである。更に、繰り返し開閉できるようにファスナーを備えていても、袋体の一部をゴミとして分離させることなく、開封容易とされている開封容易構造を備えた袋体を提供することである。 The problem to be solved by the present invention is to provide a bag body having an easy-open structure that is easy to open without separating a part of the bag body as garbage. Furthermore, even if it is provided with a fastener so that it can be repeatedly opened and closed, it is to provide a bag body having an easy-open structure that is easy to open without separating a part of the bag body as garbage.
 本発明の第1の発明の袋体は、内容物を収容する袋体であって、第1のシート内面と第2のシート内面を封鎖させる線状に伸びる開封部を含み、前記開封部は熱溶着により封鎖されると共に、開封の起点とされる開封容易部が含まれ、前記開封容易部は、前記開封部が伸びる線に沿う単位長さあたりの熱溶着部の面積密度が、前記開封容易部に隣接する位置の単位長さあたりの熱溶着部の面積密度よりも小さくされていることを特徴としている。 A bag body according to a first aspect of the present invention is a bag body for containing contents, and includes a linearly extending opening portion that seals the first sheet inner surface and the second sheet inner surface, An easy-to-open portion that is sealed by thermal welding and that is the starting point of opening is included, and the easy-to-open portion has an area density of the heat-welded portion per unit length along a line along which the opening portion extends. It is characterized by being made smaller than the area density of the heat-welded part per unit length at a position adjacent to the easy part.
 袋体に収容される内容物の状態は、形状のある固体、粒状体に限定されず、粉体、流動体等であってもよく、内容物の種類も限定されない。袋体の形状も限定されず、円柱形状、平面状、ガゼット袋形状等であってもよく、袋体を構成するシートの数も限定されない。袋体の材質は、樹脂質、樹脂コーティング処理された紙質が好適である。また、開封部は、線状に繋がって密封部をなせばよく、環状に繋がっていてもよく、直線に沿って伸びてもよく、曲線、折れ曲がった線をなしていてもよく、背貼りシール部の位置であってもよい。開封容易部の位置は、開封部の中央位置でも、開封部端部から離間した位置でも、いずれの位置であってもよい。また、開封部の熱溶着は、ヒートシール、ホットメルト接着剤等のいずれによってもよい。内容物が食品の場合には、ヒートシールを密閉手段とすることが衛生上好適である。 The state of the contents accommodated in the bag is not limited to a solid or granular body, but may be a powder, a fluid, or the like, and the type of the contents is not limited. The shape of the bag body is not limited, and may be a cylindrical shape, a planar shape, a gusset bag shape, or the like, and the number of sheets constituting the bag body is not limited. The material of the bag body is preferably a resinous material or a resin-coated paper. In addition, the opening part may be connected linearly to form a sealing part, may be connected in an annular shape, may extend along a straight line, may form a curved line, a bent line, and a back-sealed seal It may be the position of the part. The position of the easy-to-open portion may be either the center position of the opening portion, the position separated from the end portion of the opening portion, or any position. Further, the heat-sealing of the opening portion may be performed by any of heat sealing, hot melt adhesive, and the like. When the content is food, it is preferable for hygiene to use a heat seal as a sealing means.
 ここで、開封部とは、袋体の開口部に沿って設けられるものをいう。開封部の溶着は、点状の溶着部、筋状の溶着部、あるいはそれらが混合して構成された溶着部であってもよい。開封容易部では、前記開封部が伸びる線に沿う単位長さあたりの熱溶着部の面積密度が、隣接する位置の単位長さあたりの熱溶着部の面積密度よりも小さくされている。面積密度の変化は、熱溶着部の密度の変化、すなわち点状溶着による場合には溶着点数、線状溶着による場合には、その長さ・太さの変化によればよい。 Here, the opening portion means a portion provided along the opening of the bag body. The welding of the opening part may be a spot-like welded part, a line-like welded part, or a welded part formed by mixing them. In the easy-to-open portion, the area density of the heat-welded portion per unit length along the line along which the unsealed portion extends is made smaller than the area density of the heat-welded portion per unit length at the adjacent position. The change in the area density may be due to the change in the density of the heat-welded portion, that is, the number of welding points in the case of spot welding and the length and thickness in the case of linear welding.
 開封部に沿って前記開封容易部の両側から前記開封容易部に向けて、熱溶着部の面積密度が小さくされている開封容易構造は、開封容易部の両側から段状をなして、熱溶着部の密度が小さくされてもよく、緩やかに熱溶着部の密度が小さくされてもよい。なお、開封容易構造は、開封部の全体に設けられてもよく、一部に設けられてもよいことは勿論のことである。 The easy-opening structure in which the area density of the heat-welding part is reduced from both sides of the easy-opening part to the easy-opening part along the opening part is formed in steps from both sides of the easy-opening part, The density of the part may be reduced, or the density of the heat welded part may be gradually reduced. Needless to say, the easy-to-open structure may be provided on the entire opening part or may be provided on a part thereof.
 第1の発明によれば、開封容易部の位置から、第1のシート内面と第2のシート内面とが離間されて、開封部が剥がされて開封される。開封のための切れ込み部から、切り開かれるということがなく、袋体の一部が切り開き片とされて分離されない。これにより、袋体の一部をゴミとして分離させることなく、幼児や高齢者であっても袋体の開封が容易である。更に、内容物が開封によって崩れず、袋体に印刷された重要表示部分についても破損されることがない。 According to the first invention, the first sheet inner surface and the second sheet inner surface are separated from the position of the easy opening portion, and the opening portion is peeled off and opened. The bag is not cut from the notch for opening, and a part of the bag is cut and not separated. Thereby, even if it is an infant or an elderly person, opening a bag body is easy, without separating a part of bag body as garbage. Further, the contents are not broken by opening, and the important display portion printed on the bag is not damaged.
 本発明の第2の発明は、第1の発明の袋体であって、前記開封部には、前記開封部が伸びる線に沿って少なくとも一本の連続した閉鎖線が含まれていることを特徴としている。第2の発明によれば、開封容易部には開封部が伸びる線に沿って少なくとも一本の連続した閉鎖線が含まれ、開封部の気密性が保たれるようになっている。これにより、外部の湿気により、移送中、陳列中に内容物が湿気ることがなく、内容物の品質が保たれる。 According to a second aspect of the present invention, there is provided the bag according to the first aspect, wherein the opening portion includes at least one continuous closing line along a line extending the opening portion. It is a feature. According to the second aspect of the invention, the easy-opening portion includes at least one continuous closing line along the line along which the opening portion extends, so that the airtightness of the opening portion is maintained. As a result, the contents are not dampened during transfer and display by external moisture, and the quality of the contents is maintained.
 本発明の第3の発明は、第2の発明の袋体であって、前記閉鎖線が、開封部において内容物を収容する側に設けられていることを特徴としている。第3の発明の袋体によれば、内部が窒素の封入等により加圧されている場合であっても、内容物の収容部側に閉鎖線が設けられていることにより、開封容易部が圧力により変形して、袋体が自然に開封されるという事態を回避することが可能であり、閉鎖線さえ指で摘まんで開封すれば、開封容易部の熱溶着部の開封は容易である。 The third invention of the present invention is the bag body of the second invention, characterized in that the closing line is provided on the side of accommodating the contents in the opening portion. According to the bag of the 3rd invention, even if it is a case where the inside is pressurized by enclosure of nitrogen etc., since the closure line is provided in the storage part side of the contents, the easy-to-open part It is possible to avoid a situation in which the bag body is naturally opened by deformation due to pressure, and if the closure line is pinched with a finger and opened, the heat-sealed portion of the easy-to-open portion can be easily opened.
 本発明の第4の発明は、第1から第3の発明の袋体であって、第1のシート内面と第2のシート内面との両縁が貼り合わされた背貼りシール部が、背面部の略中央部に形成された袋体とされ、前記略中央部の近傍に前記開封容易部が設けられていることを特徴としている。 A fourth invention of the present invention is the bag body of the first to third inventions, wherein the back-sealed seal portion in which both edges of the first sheet inner surface and the second sheet inner surface are bonded is a back surface portion. The bag is formed in a substantially central part of the bag, and the easy-to-open part is provided in the vicinity of the substantially central part.
 第4の発明では、袋体の両側縁が貼り合わされて、背貼りシール部が形成されている。そして、背貼りシール部が袋体の背面部の略中央に形成され、第1のシート又は第2シートのいずれかの外側に位置しているため、そこを摘まみ部とすることが可能である。これにより、背貼りシール部と、その反対側のシート面を摘まんで開封部を開封することが容易であり、袋体をいびつに変形させないで開封することが可能であり、より内容物を破損させにくい。 In the fourth invention, both side edges of the bag body are bonded together to form a back-sealed seal portion. And since a back sticking seal part is formed in the approximate center of the back part of a bag, and located in the outside of either the 1st sheet or the 2nd sheet, it can be used as a knob part. is there. As a result, it is easy to open the unsealed part by pinching the back-sealed seal part and the sheet surface on the opposite side, and it is possible to unseal the bag body without deforming it, and damage the contents more It is hard to let you.
 本発明の第5の発明は、第1から第4の発明の袋体であって、前記開封部が、略コ字形状に折れ曲がって形成されていることを特徴としている。第4の発明によれば、折れ曲がり起点を折り返せば、袋体を開口の大きな筒体とすることが可能である。これにより、内容物を取り出すことが容易となる。 The fifth invention of the present invention is the bag body of the first to fourth inventions, characterized in that the opening portion is formed by being bent into a substantially U-shape. According to the fourth aspect of the present invention, the bag body can be formed into a cylindrical body having a large opening by folding the folding start point. Thereby, it becomes easy to take out the contents.
 本発明の第6の発明は、第1から第5の発明の袋体であって、前記開封部の内容物収容部側に、筋状の凸部と筋状の凹部が咬合されて密封部をなすファスナーが備えられていることを特徴としている。ここで、開封前には、ファスナーが閉じていても、開いていてもいずれでもよい。ファスナーが閉じている場合には、ファスナーに内容物が詰まりにくく、ファスナーが開いていれば、開封部が開封しやすい。 6th invention of this invention is a bag body of 1st-5th invention, Comprising: A streaky convex part and a streaky recessed part are occluded by the contents accommodating part side of the said opening part, and a sealing part It is characterized by being equipped with a zipper. Here, before opening, the fastener may be closed or open. When the fastener is closed, the contents are not easily clogged, and if the fastener is open, the opening is easy to open.
 これにより、開封部を容易に開封させたとしても、袋体の内容物を外部と隔離させることが可能であり、湿気を帯びやすい内容物を良好な状態に保ったまま、繰り返し密封・開封することが可能である。更に、第4の発明に第5の発明を適用すれば、折れ曲がり起点を折り返して、ファスナーに引っ掛からないように内容物を取り出すことが可能である。特に、紛体や湿気っている食品等を内容物として、それをファスナーに詰まらせないで繰り返して取り出す袋体に好適である。内容物が湿気を含んだ粒状体、例えばごはん用の湿ったふりかけ等であっても、ファスナーを目詰まりさせないで、繰り返し密封・開封することが可能となるという有利な効果がある。 Thereby, even if the opening part is easily opened, it is possible to isolate the contents of the bag from the outside, and repeatedly seal and open while keeping moisture-sensitive contents in a good state. It is possible. Furthermore, if the fifth invention is applied to the fourth invention, it is possible to return the bent starting point and take out the contents so as not to be caught by the fastener. In particular, it is suitable for a bag body in which powder or moist food is taken as a content and is repeatedly taken out without clogging the zipper. Even if the content is a granular material containing moisture, such as a wet sprinkle for rice, there is an advantageous effect that it can be repeatedly sealed and opened without clogging the fastener.
 本発明の第7の発明は、第1から第6の発明の袋体であって、前記開封部の外方側に、開放された開放端部が備えられていることを特徴としている。第7の発明では、開放端部を摘まんで離間させることで、袋体の開封部が剥離され、袋体が開封される。袋体の開封部から外方側に、開放された開放端部が備えられていることにより、開封部の両側のシート面を摘まむことが容易になり、袋体を開封することが容易になる。 The seventh invention of the present invention is the bag body of the first to sixth inventions, characterized in that an open end portion that is opened is provided on the outer side of the opening portion. In 7th invention, the opening part of a bag body is peeled by picking and separating an open end part, and a bag body is opened. By providing an open open end on the outer side from the opening of the bag body, it becomes easy to pick up the sheet surfaces on both sides of the opening portion, and it is easy to open the bag body Become.
 本発明の第8の発明は、第1から第7の発明の袋体であって、第1のシートと第2のシートの各々の前記開封部の外方側に突出端部が備えられ、前記各々の突出端部が異なった形状に形成されていることを特徴としている。 The eighth invention of the present invention is the bag body of the first to seventh invention, comprising a protruding end on the outer side of the unsealing portion of each of the first sheet and the second sheet, Each of the protruding end portions is formed in a different shape.
 ここで、各々のシートの突出端部の略中央位置に、突出端部より内方に、半円状の摘まみ部が隣接されて異なった位置に形成されていると好適であるが、外方に突出されて摘まみ部が形成されていてもよい。また、各々のシートの先方が段違いに形成されていてもよい。突出端部の外縁は、開放されていてもよく、ミシン目により切り開き容易とされていてもよい。各々の突出端部が異なった形状に形成されているため、両手の夫々の指先で前記の摘まみ部が摘まみやすくなり、前記開封部の第1のシートと第2のシートを両側に離間させて開封することが容易となる。 Here, it is preferable that a semicircular knob is adjacent to and formed at a different position at a substantially central position of the protruding end portion of each sheet, inward from the protruding end portion. A knob may be formed by protruding in the direction. Further, the leading ends of the respective sheets may be formed in steps. The outer edge of the protruding end portion may be open or may be easily opened by a perforation. Since each projecting end is formed in a different shape, it becomes easier to pick the knob with the fingertips of both hands, and the first sheet and the second sheet of the unsealed part are separated on both sides. It becomes easy to open it.
・第1の発明によれば、袋体の一部をゴミとして分離させることなく、幼児や高齢者であっても袋体の開封が容易である。更に、内容物が開封によって崩れず、袋体に印刷された重要表示部分についても破損されることがない。
・第2の発明によれば、開封部の気密性が保たれ、外部の湿気により、移送中、陳列中に内容物が湿気ることがなく、内容物の品質が保たれる。
・第3の発明によれば、内部が窒素の封入等により加圧されている場合であっても、内容物の収容部側に閉鎖線が設けられていることにより、開封容易部が圧力により変形して、袋体が自然に開封されるという事態を回避することが可能であり、閉鎖線さえ指で摘まんで開封すれば、開封容易部の熱溶着部の開封は容易である。
・第4の発明によれば、背貼りシール部と、その反対側のシート面を摘まんで開封部を開封することが容易であり、袋体をいびつに変形させないで開封することが可能であり、より内容物を破損させにくい。
-According to 1st invention, even if it is an infant or an elderly person, it is easy to open a bag body, without separating a part of bag body as garbage. Further, the contents are not broken by opening, and the important display portion printed on the bag is not damaged.
-According to 2nd invention, the airtightness of an opening part is maintained, the content does not damp during transfer and display by external moisture, and the quality of the content is maintained.
-According to the third invention, even if the inside is pressurized by nitrogen sealing or the like, the easy-to-open portion can be It is possible to avoid a situation in which the bag body is naturally opened by deformation, and the heat-sealed part of the easy-to-open part can be easily opened if even the closing line is picked and opened by the finger.
-According to the fourth invention, it is easy to open the opening portion by pinching the back-sealed seal portion and the sheet surface on the opposite side, and it is possible to open the bag body without deforming it into an irregular shape. , More difficult to damage the contents.
・第5の発明によれば、折れ曲がり起点を折り返せば、袋体を開口の大きな筒体とすることが可能である。これにより、内容物を取り出すことが容易となる。
・第6の発明によれば、開封部を開封させてからでも、袋体を密封させて外部と隔離させて、繰り返し密封・開封することが可能である。折れ曲がり起点を折り返して、ファスナーに引っ掛からないように内容物を取り出すことが可能となり、紛体や湿気っている食品等の内容物を、ファスナーに詰まらせないで取り出すことが可能になる。
・第7の発明によれば、袋体の開封部から外方側に、開放された開放端部が備えられていることにより、開封部の両側のシート面を摘まむことが容易になり、袋体を開封することが容易になる。
・第8の発明によれば、各々の突出端部が異なった形状に形成されているため、両手の夫々の指先で前記の摘まみ部が摘まみやすくなり、前記開封部の第1のシートと第2のシートを両側に離間させて開封することが容易となる。
-According to 5th invention, if a folding origin is turned up, it is possible to make a bag body into a cylinder with a big opening. Thereby, it becomes easy to take out the contents.
-According to the sixth invention, even after the opening portion is opened, the bag body can be sealed and isolated from the outside, and can be repeatedly sealed and opened. It is possible to take out the folding start point and take out the contents so as not to be caught by the fastener, and it is possible to take out the contents such as powder and damp food without clogging the fastener.
-According to the seventh invention, it is easy to pinch the sheet surfaces on both sides of the opening portion by providing an open end portion that is opened outward from the opening portion of the bag body, It becomes easy to open the bag.
-According to 8th invention, since each protrusion edge part is formed in the different shape, it becomes easy to pick the said knob | pinch part with each fingertip of both hands, and the 1st sheet | seat of the said opening part And the second sheet can be easily separated and opened on both sides.
背貼りシール部が備えられる袋体の開封容易構造の説明図(実施例1)Explanatory drawing (Example 1) of the easy-open structure of the bag body provided with a back sticker seal part 開封容易構造の説明図(実施例1)Explanatory drawing of structure for easy opening (Example 1) 背貼りシール部に開封容易構造が備えられる袋体の説明図(実施例2)Explanatory drawing (Example 2) of the bag body by which an easy-open structure is provided in a back sticker seal part ファスナーが備えられる袋体の開封容易構造の説明図(実施例3)Explanatory drawing of the easy-open structure of the bag body provided with a fastener (Example 3) 折れ曲がった隅部とファスナーとが備えられる袋体の開封容易構造の説明図(実施例4)Explanatory drawing (Example 4) of the easy-opening structure of the bag body provided with the bent corner and the fastener 開封部の外方側に開放された開放端部が備えられる袋体の説明図(実施例5)Explanatory drawing of the bag body with which the open end part open | released by the outward side of the opening part is provided (Example 5) 開封部の外方側に突出端部が備えられる袋体の説明図(実施例6)Explanatory drawing of the bag body by which a protrusion edge part is provided in the outward side of an opening part (Example 6)
 以下、本発明の実施の形態を、実施例を参照して説明する。実施例1から実施例6までの袋体は、袋体の開封部に、開封の起点とされる熱溶着部の面積密度が小さい開封容易部を備えた開封容易構造が含まれている袋体である。また、いずれの実施例においても、開封部以外の袋体の閉鎖部分については、その溶着等の強度、閉鎖手段は限定されないことは勿論のことである。 Hereinafter, embodiments of the present invention will be described with reference to examples. The bag body from Example 1 to Example 6 includes a bag body including an easy-to-open structure provided with an easy-to-open portion having a small area density of the heat-welded portion that is the starting point of opening at the opening portion of the bag body. It is. In any of the embodiments, it is needless to say that the strength of the welding and the closing means are not limited for the closed portion of the bag body other than the opening portion.
 まず、実施例1では、袋体1の上縁に開封部10が備えられ、袋体1の背面には背貼りシール部20が備えられる三方がシールされた袋体1を、図1および図2を参照して説明する。袋体1は、例えばポテトチップス菓子等に使用されると好適である。図1は、袋体1を背面側から見た説明図であり、図2は開封容易構造40の他の例についての説明図である。 First, in the first embodiment, the bag body 1 is provided with an opening 10 at the upper edge of the bag body 1, and the back side of the bag body 1 is provided with a back-sealed seal section 20. This will be described with reference to FIG. The bag 1 is suitable for use in, for example, potato chips confectionery. FIG. 1 is an explanatory view of the bag body 1 as viewed from the back side, and FIG. 2 is an explanatory view of another example of the easy-to-open structure 40.
 袋体1は、袋体1の上縁に略直線状の開封部10が備えられ、開封部10の略中央に開封の起点とされる開封容易部30が備えられる。ここで、開封の起点とは、袋体1が開封される際に開封部10の剥離が開始される位置をいう。また、袋体1の背面側(図1参照)の略中央には、背貼りシール部20が備えられている。背貼りシール部20は、袋体1をなすシート体の両端縁の内面同士が重ねられてヒートシールされて形成される。 The bag body 1 is provided with a substantially linear opening portion 10 at the upper edge of the bag body 1, and an opening easy portion 30 that is the starting point of opening is provided at the approximate center of the opening portion 10. Here, the starting point of opening refers to a position where peeling of the opening portion 10 is started when the bag body 1 is opened. Further, a back-sealed seal portion 20 is provided in the approximate center of the back side of the bag body 1 (see FIG. 1). The back-sealed seal portion 20 is formed by heat-sealing the inner surfaces of both end edges of the sheet body forming the bag body 1.
 また、開封部10は閉鎖線11と、ドット状ヒートシール12とからなるヒートシールとされる。開封部10の外方側に備えられている閉鎖線11は、両端部13側から開封容易部30に向かって、開封部10の高さが最も小さくなるように、内容物収容部50側に向かって略V字形状に屈曲されて形成されている。これにより袋体1が密封されて、埃等の異物の混入が防がれる。また、内容物収容部50側に直線状の閉鎖線11が備えられていることで、開封部10の気密性が保たれると共に、開封容易部が袋体1内部の圧力により変形して、袋体1が自然に開封されるという事態を回避できる。 Further, the opening part 10 is a heat seal composed of a closing line 11 and a dot-like heat seal 12. The closing line 11 provided on the outer side of the opening portion 10 is located on the content accommodating portion 50 side so that the height of the opening portion 10 becomes the smallest from the both end portions 13 toward the opening easy portion 30. It is bent and formed in a substantially V shape. As a result, the bag body 1 is sealed, and foreign substances such as dust are prevented from being mixed. Further, since the linear closure line 11 is provided on the content container 50 side, the airtightness of the opening part 10 is maintained, and the easy opening part is deformed by the pressure inside the bag body 1, The situation where the bag 1 is naturally opened can be avoided.
 また、ドット状ヒートシール12は、内外に備えられる閉鎖線11の間に備えられ、両端部13側から開封容易部30に向かって、その数が漸減されるように形成されている。ここで、閉鎖線11の太さ、数、間隔、形状等およびドット状ヒートシール12の大きさ、数、間隔等は限定されず、開封容易部に必要とされる開封強度に合わせて調整されればよい。なお、閉鎖線11は袋体の内容物収容部側のみに設けてもよい。 Further, the dot-shaped heat seals 12 are provided between the closed lines 11 provided inside and outside, and are formed so that the number thereof is gradually reduced from the both end portions 13 toward the easy-to-open portions 30. Here, the thickness, number, interval, shape, etc. of the closing line 11 and the size, number, interval, etc. of the dot-shaped heat seal 12 are not limited, and are adjusted according to the opening strength required for the easy opening portion. Just do it. In addition, you may provide the closing line 11 only in the content storage part side of a bag.
 また、開封部10の開封に必要とされる開封強度は、閉鎖線11とドット状ヒートシール12によって調整可能とされる。例えば、閉鎖線11の太さが細くされる、ドット状ヒートシール12の密度が小さくされる等によって、開封部10の熱溶着部の面積密度を小さくできる。単位長さあたりの熱溶着部の面積密度が小さくされることで、隣接する位置に比べて単位長さあたりの開封部10の剥離に必要な力が小さい開封容易構造40が形成される。この実施例では、開封部10の両端部13側から中央に向かってドット状ヒートシール12の数が漸減されて、隣接する位置に比べて単位長さあたりの熱溶着部の面積密度が小さい開封容易部30が形成されている。 Further, the opening strength required for opening the opening portion 10 can be adjusted by the closing line 11 and the dot heat seal 12. For example, the area density of the heat-welded part of the opening part 10 can be reduced by reducing the thickness of the closing line 11 or reducing the density of the dot-shaped heat seal 12. By reducing the area density of the heat-welded portion per unit length, the easy-to-open structure 40 with less force required for peeling the opening portion 10 per unit length than the adjacent positions is formed. In this embodiment, the number of dot-like heat seals 12 is gradually reduced from the both end portions 13 side of the opening portion 10 toward the center, and the area density of the heat-welded portion per unit length is small compared to the adjacent positions. An easy portion 30 is formed.
 また、開封時には、袋体1の表側シートの開封容易部30近傍を一方の手の指先24で摘まみ、他方の手の指先25で背貼りシール部20を摘まんで引っ張って離間させることで、開封容易部30から剥離が始まる。さらに袋体1を引っ張って離間させることで、開封部10の開封容易部30から両端部13までが開封される。 Further, at the time of opening, by picking the vicinity of the easy-to-open portion 30 of the front sheet of the bag body 1 with the fingertip 24 of one hand, by picking and pulling the back-sticking seal portion 20 with the fingertip 25 of the other hand, Peeling starts from the easy-to-open portion 30. Further, by pulling and separating the bag body 1, the portion from the easy-to-open portion 30 to both end portions 13 of the opening portion 10 is opened.
 ここで、ドット状ヒートシール12の数は開封部10の両側に向かって増加されている。したがって、熱溶着部の面積密度が開封容易部30から両側に向かって次第に大きくされ、開封容易部30から両側に向かって徐々にヒートシールの剥離が広がり、開封部10から外れない状態で袋体が開封される。また、開封の際に内容物収容部分50が切り開かれないため、調理方法表示欄、成分表示欄、問い合わせ表示欄、キャンペーン応募欄といった重要表示部60が破損されることもない。 Here, the number of dot-like heat seals 12 is increased toward both sides of the opening part 10. Accordingly, the area density of the heat welded portion is gradually increased from the easy-to-open portion 30 toward both sides, the heat seal is gradually peeled from the easy-open portion 30 to both sides, and the bag body is not detached from the open portion 10. Is opened. In addition, since the contents storage portion 50 is not cut open at the time of opening, the important display portions 60 such as the cooking method display column, the component display column, the inquiry display column, and the campaign application column are not damaged.
 次に、開封容易構造40の複数の例を、図2(A)図から図2(G)図を参照して説明する。開封容易構造40は、開封部10の全体に備えられていてもよく、一部に備えられていてもよいことは勿論のことである。図2では、袋体の開封部の縁部を一点鎖線で示し、開封部10における開封容易構造40を、二重波線で区画して要部を説明している。開封容易構造40は、開封部が伸びる線に沿う単位長さあたりの密度を変化させる下記に示した例に、限定されるわけではない。 Next, a plurality of examples of the easy-open structure 40 will be described with reference to FIGS. 2 (A) to 2 (G). Of course, the easy-opening structure 40 may be provided in the whole opening part 10, and may be provided in one part. In FIG. 2, the edge part of the opening part of a bag is shown with a dashed-dotted line, and the opening easy structure 40 in the opening part 10 is divided with a double wavy line, and the principal part is demonstrated. The easy-open structure 40 is not limited to the example shown below that changes the density per unit length along the line along which the open portion extends.
 図2(A)図は、開封容易部30の両側に、段状にドット状ヒートシール12が備えられた開封容易構造41を示す図である。この開封容易構造41では、開封容易部30に向けて、ドット状ヒートシール12の数が段状に少なくされ、開封部が伸びる線に沿う単位長さあたりの熱溶着部の面積密度が変化されている。また、開封部10には、閉鎖線11を備えておらず、内容物収容部が完全に密封されていない。この例は、密封が適さないパンや、密封が必要とされない物の包装に使用されると好適である。段状の形状は、左右対称としてもよいことは勿論のことである。 FIG. 2 (A) is a diagram showing an easy-to-open structure 41 in which dot-like heat seals 12 are provided on both sides of the easy-to-open portion 30. In this easy-to-open structure 41, the number of dot-like heat seals 12 is reduced stepwise toward the easy-open portion 30, and the area density of the heat-welded portion per unit length along the line where the open portion extends is changed. ing. Moreover, the opening part 10 is not provided with the closing line 11, and the content accommodating part is not completely sealed. This example is suitable for use in packaging bread that is not suitable for sealing, or for packaging items that do not require sealing. Of course, the stepped shape may be bilaterally symmetric.
 図2(B)図は、ドット状ヒートシール12の内方側に、開封部10に沿って閉鎖線11を備えている開封容易構造42を示す図である。袋体の外方側のドット状ヒートシール12が、袋体の内方側に向かって略V字形状に形成されており、その内方側には開封部10に沿ってドット状ヒートシール12が備えられている。V字形状を左右対称としてもよいことは勿論のことである。この場合には、開封部10のドット状ヒートシール12の数が、略V字状に開封容易部30に向けて徐々に少なくされて、隣接する位置に比べて、開封部が伸びる線に沿う単位長さあたりの熱溶着部の面積密度が、開封容易部30に向けて小さくされている。また、開封部10の内方側には、直線状の閉鎖線11が備えられるため、開封容易部30が内部の気圧により変形して、袋体が自然に開封されるという事態が回避される。 FIG. 2 (B) is a diagram showing an easy-to-open structure 42 provided with a closing line 11 along the opening 10 on the inner side of the dot-shaped heat seal 12. The dot-shaped heat seal 12 on the outer side of the bag body is formed in a substantially V shape toward the inner side of the bag body, and the dot-shaped heat seal 12 is formed along the opening portion 10 on the inner side. Is provided. Of course, the V shape may be symmetrical. In this case, the number of dot-like heat seals 12 in the opening part 10 is gradually reduced toward the opening easy part 30 in a substantially V shape, and is along a line where the opening part extends compared to the adjacent position. The area density of the heat-welded portion per unit length is reduced toward the easy-to-open portion 30. Moreover, since the linear closure line 11 is provided in the inner side of the opening part 10, the situation where the opening easy part 30 deform | transforms with an internal atmospheric pressure and a bag body is naturally opened is avoided. .
 図2(C)図は、開封部10が、閉鎖線11と長さが異なる複数の横方向の線状ヒートシール14を備えている開封容易構造43を示す図である。開封容易構造43では、線状ヒートシール14が、袋体の内方側に向かって徐々に短くされ、開封部が伸びる線に沿う単位長さあたりの熱溶着部の面積密度が、隣接する位置に比べて、開封容易部30に向けて小さくされている。また、外方側に直線状の閉鎖線11が備えられているため、気密性を必要とする内容物の場合に好適である。 FIG. 2 (C) is a diagram showing an easy-to-open structure 43 in which the opening portion 10 includes a plurality of transverse linear heat seals 14 having different lengths from the closing line 11. In the easy-to-open structure 43, the linear heat seal 14 is gradually shortened toward the inner side of the bag body, and the area density of the heat-welded portion per unit length along the line in which the opened portion extends is adjacent to the position. As compared with the above, it is made small toward the easy-to-open portion 30. Moreover, since the linear closure line 11 is provided in the outward side, it is suitable in the case of the content which needs airtightness.
 図2(D)図は、開封部10の外方側と内方側のいずれにも閉鎖線11が備えられた開封容易構造44を示す図である。外方側の閉鎖線11は、袋体の内方側に向かって略V字形状に屈曲されて形成されている。内方側の閉鎖線11は開封部10に沿って直線状に形成されている。また、閉鎖線11同士の間には、ドット状ヒートシール12が備えられている。ドット状ヒートシール12の数が開封容易部30に向けて徐々に少なくされることにより、開封部が伸びる線に沿う単位長さあたりの熱溶着部の面積密度が開封容易部30に向けて小さくされ、開封強度が変化されている。閉鎖線11が開封部10の外方側と内方側の両方に備えられているため、気密性を必要とすると共に、外部からの異物の混入を防ぐ必要のある内容物の袋体の開封部に適用すると好適である。 FIG. 2 (D) is a diagram showing an easy-open structure 44 in which the closing line 11 is provided on both the outer side and the inner side of the opening portion 10. The outer closing line 11 is formed to be bent in a substantially V shape toward the inner side of the bag body. The inner closing line 11 is formed linearly along the opening 10. A dot-like heat seal 12 is provided between the closed lines 11. As the number of dot-shaped heat seals 12 is gradually reduced toward the easy-opening portion 30, the area density of the heat-welded portion per unit length along the line along which the openable portion extends is reduced toward the easy-opening portion 30. The opening strength has been changed. Since the closing line 11 is provided on both the outer side and the inner side of the opening part 10, opening the bag body of contents that need to be airtight and prevent foreign matters from being mixed in. It is preferable to apply to the part.
 図2(E)図は、長さが異なる複数の縦方向の線状ヒートシール15が備えられる開封容易構造45を示す図である。開封部が伸びる線に沿う単位長さあたりの線状ヒートシール15の長さが、開封容易部30に向けて短くされることにより、熱溶着部の面積密度が変化され、開封強度が変化されている。各々の線状ヒートシール15の間を通気可能とすることにより、密封に適さない内容物の包装に好適に使用される。開封部10に閉鎖線11が備えられて袋体が密封されてもよいことは勿論のことである。 FIG. 2 (E) is a diagram showing an easy-to-open structure 45 provided with a plurality of longitudinal linear heat seals 15 having different lengths. By reducing the length of the linear heat seal 15 per unit length along the line along which the opening portion extends toward the opening easy portion 30, the area density of the heat welded portion is changed, and the opening strength is changed. Yes. By allowing air to pass between the linear heat seals 15, it is suitably used for packaging contents that are not suitable for sealing. Of course, the opening part 10 may be provided with a closing line 11 to seal the bag.
 図2(F)図は、長さが同じで、各々の間隔を変更した複数の縦方向の線状ヒートシール16からなる開封容易構造46を示す図である。縦方向の線状ヒートシール16同士の間隔が、開封部が伸びる線に沿って開封容易部30に向けて徐々に広くされることにより、開封容易部30が隣接する位置に比べて単位長さあたりの熱溶着部の面積密度が小さくされている。開封部10に閉鎖線11が備えられて袋体が密封されてもよいことは勿論のことである。 FIG. 2 (F) is a diagram showing an easy-to-open structure 46 composed of a plurality of longitudinal linear heat seals 16 having the same length and different intervals. The interval between the linear heat seals 16 in the vertical direction is gradually increased toward the easy opening portion 30 along the line where the opening portion extends, so that the unit length is longer than the position where the easy opening portion 30 is adjacent. The area density of the heat welded portion is reduced. Of course, the opening part 10 may be provided with a closing line 11 to seal the bag.
 図2(G)図は、長さも各々の間隔も同じとし、複数の縦方向の線状ヒートシール17の太さを変化させた開封容易構造47を示す図である。縦方向の線状ヒートシール17の太さが、開封容易部30に向けて徐々に細くされることにより、開封容易部30が隣接する位置に比べて単位長さあたりの熱溶着部の面積密度が小さくされている。開封部10に閉鎖線11が備えられて袋体が密封されてもよいことは勿論のことである。 FIG. 2 (G) is a diagram showing an easy-to-open structure 47 in which the lengths and the intervals are the same, and the thickness of the plurality of linear heat seals 17 in the vertical direction is changed. As the thickness of the linear heat seal 17 in the vertical direction is gradually reduced toward the easy-to-open portion 30, the area density of the heat-welded portion per unit length compared to the position where the easy-open portion 30 is adjacent. Has been made smaller. Of course, the opening part 10 may be provided with a closing line 11 to seal the bag.
 図1又は図2で説明した開封容易構造が備えられる袋体の材質は限定されず、凝集剥離、層間剥離、界面剥離等いずれの手段による場合であってもよい。凝集剥離の場合には、ポリプロピレンとポリエチレン等を開封容易となるように混合させたシートが使用されればよい。層間剥離の場合には、ポリプロピレン等からなる積層フィルムが使用されればよい。界面剥離の場合には、EVA等の易接着性樹脂が使用されればよい。 The material of the bag body provided with the easy-open structure described in FIG. 1 or FIG. 2 is not limited, and may be by any means such as cohesive peeling, delamination, and interface peeling. In the case of cohesive peeling, a sheet in which polypropylene and polyethylene are mixed so as to be easily opened may be used. In the case of delamination, a laminated film made of polypropylene or the like may be used. In the case of interfacial peeling, an easily adhesive resin such as EVA may be used.
 実施例2では、菓子パンを袋体に収容した図3を参照して、筒状に伸びる袋体2の背貼りシール部20に開封部10が備えられる袋体2を説明する(図3(A)図参照)。開封容易部30は、背貼りシール部20の中央部21よりも一方の端部22側に寄った位置に、備えられている。ここで、背貼りシール部20において、開封容易部30が備えられる位置は限定されないが、端部側に寄った位置から開封されることで、袋体2が不要に大きく開封されず、筒体の端部開封部も開封しやすくなる点で好適である。 In Example 2, with reference to FIG. 3 in which a confectionery bread is housed in a bag body, a bag body 2 in which an opening portion 10 is provided on a back-sealed seal portion 20 of the bag body 2 extending in a cylindrical shape will be described (FIG. 3A (See the figure). The easy-to-open portion 30 is provided at a position closer to one end portion 22 than the central portion 21 of the back-sealed seal portion 20. Here, in the back-sealed seal portion 20, the position where the easy-to-open portion 30 is provided is not limited, but the bag body 2 is not opened unnecessarily large by opening from the position close to the end side, and the cylindrical body The end opening portion is also preferable in that it is easy to open.
 袋体2を開封させる際には、開封容易部30近傍の背貼りシール部20を挟んだ両側のシート面23を摘まんで、引っ張って離間させて開封させる(図3(A)図中の矢印方向)。背貼りシール部20から開封されることで、袋体2が背貼りシール部20に沿って大きく開封されるため、細長く伸びた菓子パン51の一方側が、袋体2から露出される(図3(B)図参照)。 When the bag body 2 is opened, the sheet surfaces 23 on both sides sandwiching the back-sealed seal portion 20 in the vicinity of the easy-to-open portion 30 are picked and pulled apart to be opened (arrows in FIG. 3A). direction). Since the bag body 2 is greatly opened along the back-sealed seal portion 20 by being opened from the back-sealed seal portion 20, one side of the elongate confectionery bread 51 is exposed from the bag body 2 (FIG. 3 ( B) See figure).
 菓子パン51を食するには、菓子パン51を袋体2から引出さなければならない。しかし、菓子パン51は湿気を帯びているため、袋体2の内面との摩擦によって引き出しにくかった。また、従来のヒートシールでは、袋体の破断線が背貼りシール部20から反れて、袋体が破れてしまうため、背貼りシール部20に沿って大きく開封することは困難であった。そこで、菓子パンを指で直接摘み出すことが必要となり、不衛生な状態となっていた。 To eat the confectionery bread 51, the confectionery bread 51 must be pulled out of the bag 2. However, since the confectionery bread 51 is damp, it was difficult to draw out due to friction with the inner surface of the bag body 2. Further, in the conventional heat seal, since the break line of the bag body is warped from the back-sticking seal portion 20 and the bag body is torn, it is difficult to open the bag body along the back-sticking seal portion 20. Therefore, it was necessary to pick out the confectionery bread directly with a finger, which was unsanitary.
 一方で、図3(B)図のように、背貼りシール部20から大きく開封すれば、細長く伸びた菓子パンの端部52が袋体2から露出され、菓子パンの食する部分に応じて、袋体2を開いていけばよい。この実施例によれば、指先が汚れている場合であっても、指先で菓子パンに触れることなく、菓子パン51を食することができて衛生的である。さらに、開封時に小さなゴミが袋体2から分離されることもない。したがって、実施例2の袋体2は、菓子パン51のように細長く湿気を帯び、袋体から引出されにくい食品等の場合に好適である。 On the other hand, as shown in FIG. 3 (B), when the bag is opened largely from the back-sealed seal portion 20, the end 52 of the elongated confectionery bread is exposed from the bag body 2, and depending on the portion that the confectionery bread eats, Just open body 2. According to this embodiment, even if the fingertip is dirty, the sweet bun 51 can be eaten without touching the sweet bun with the fingertip. Furthermore, small garbage is not separated from the bag 2 at the time of opening. Therefore, the bag body 2 of Example 2 is suitable for a food or the like that is elongated and damp like the confectionery bread 51 and is difficult to be pulled out from the bag body.
 実施例3では、図4を参照して三辺が密封状態とされると共に、一辺が開封部としてヒートシールされた袋体3を説明する。袋体3の上縁80は開封部10とされ、開封容易部30が設けられた開封容易構造40が備えられ、その内方側にはファスナー70が備えられる。また、ファスナー70は、筋状の凸部と筋状の凹部が咬合されて、袋体3が繰返し密封・開封可能であればその形状等は限定されない。袋体3は、繰返し密封、開封可能とされるため、虫や湿気、埃等から内容物が保護される。よって、飴や小麦粉等の一度に食べきれない食品に使用されると好適である。 In Example 3, a bag body 3 in which three sides are sealed and one side is heat-sealed as an opening will be described with reference to FIG. The upper edge 80 of the bag 3 is the opening part 10, and an opening easy structure 40 provided with the opening easy part 30 is provided, and a fastener 70 is provided on the inner side thereof. Further, the shape and the like of the fastener 70 are not limited as long as the line-shaped convex part and the line-shaped concave part are engaged and the bag body 3 can be repeatedly sealed and opened. Since the bag body 3 can be repeatedly sealed and opened, the contents are protected from insects, moisture, dust and the like. Therefore, it is suitable to be used for foods that cannot be eaten at one time, such as rice cake and flour.
 実施例4では、図5を参照して、袋体の開封部10に、折れ曲がった隅部18が備えられた袋体4を説明する。開封部10には2か所の折れ曲がった隅部18が備えられて、略U字形状の開封部とされている。開封部10の内方側には、開封部10に沿って、略U字形状の屈曲ファスナー71が備えられる(図5(A)図参照)。ここで、開封容易構造40は袋体の開放側に設けられると好適である。 In Example 4, a bag body 4 in which a folded corner portion 18 is provided in the opening portion 10 of the bag body will be described with reference to FIG. The opening portion 10 is provided with two bent corner portions 18 to form a substantially U-shaped opening portion. A substantially U-shaped bent fastener 71 is provided on the inner side of the opening portion 10 along the opening portion 10 (see FIG. 5A). Here, it is preferable that the easy-open structure 40 is provided on the opening side of the bag body.
 内容物が、ウェットシート53とされる例を説明する。袋体4が開封される際には、開封容易部30から略U字形状とされた開封部10の端辺から開封され、開封部の起点で折り返されて開封される。そして、袋体4の内面の平滑な部分55が、ウェットシート53を取り出す開口端部56とされる(図5(B)図参照)。袋体4の開封により、ウェットシート53の端部54が外部に露出されて、ウェットシート53を摘まんで取り出すことが容易とされる。実施例4の袋体4は、マスク等の平坦な形状の内容物にも好適である。 An example in which the content is a wet sheet 53 will be described. When the bag body 4 is opened, the bag body 4 is opened from the end side of the opening portion 10 that is substantially U-shaped from the opening easy portion 30, and is folded and opened at the starting point of the opening portion. And the smooth part 55 of the inner surface of the bag body 4 is used as the opening end part 56 which takes out the wet sheet 53 (refer FIG.5 (B) figure). By opening the bag body 4, the end 54 of the wet sheet 53 is exposed to the outside, and the wet sheet 53 can be easily picked and taken out. The bag body 4 according to the fourth embodiment is also suitable for flat-shaped contents such as a mask.
 ここで、内容物がふりかけ57とされる例を説明する。開封部10が、ファスナー基端72から外方に向かって折られ、屈曲ファスナー71の凸部73と凹部74が設けられた袋体の内面が外方に向かって折り返される(図5(C)図参照)。そして、ふりかけ57を屈曲ファスナー71の凸部73と凹部74に触れない状態として、ふりかけ57を外部にふり出すことが可能になる。これにより、屈曲ファスナー71の凸部73や凹部74に、ふりかけが目詰まりすることがなく、屈曲ファスナー71が密着して閉鎖される。また、袋体4内に異物が混入せず、袋体4内にカビが発生されることも防がれる。実施例4の袋体4は、小麦粉等の粉状物にも好適である。 Here, an example in which the contents are sprinkled 57 will be described. The opening portion 10 is folded outward from the fastener base end 72, and the inner surface of the bag body provided with the convex portion 73 and the concave portion 74 of the bent fastener 71 is folded outward (FIG. 5C). (See figure). Then, it is possible to sprinkle the sprinkling 57 outside with the sprinkling 57 not touching the convex portion 73 and the concave portion 74 of the bending fastener 71. Thereby, the bending fastener 71 is brought into close contact with the convex portion 73 and the concave portion 74 of the bending fastener 71 without being clogged. Further, foreign matters are not mixed in the bag body 4, and mold is prevented from being generated in the bag body 4. The bag body 4 of Example 4 is also suitable for powdered materials such as wheat flour.
 実施例5では、図6を参照して、開封部10の外方側に開放端部90が備えられる袋体5を説明する。この袋体5は、底面が備えられるガゼット袋であり、開封部10には開封容易部30が設けられた開封容易構造40が備えられ、開封部10の外方側には開放端部90が備えられている。この場合には、開放端部90を指で摘まんで離間させて袋体5を開封させてもよい。開封部10の外方側に開放端部90が備えられることで、表面シート91と裏面シート92を、容易に指先で摘まんで離間させることができ、袋体5を容易に開封することが可能となる。 In Example 5, a bag body 5 provided with an open end 90 on the outer side of the opening 10 will be described with reference to FIG. The bag body 5 is a gusset bag having a bottom surface, and the opening portion 10 is provided with an easy opening structure 40 provided with an opening easy portion 30, and an open end 90 is provided on the outer side of the opening portion 10. Is provided. In this case, the bag body 5 may be opened by picking the open end 90 with a finger and separating it. By providing the open end 90 on the outer side of the opening part 10, the top sheet 91 and the back sheet 92 can be easily picked and separated by the fingertips, and the bag body 5 can be easily opened. It becomes.
 実施例6では、図7を参照して、開封部の外方側に突出端部が設けられ、その表面シート101と裏面シート102の形状が異なるように形成された袋体6を説明する。袋体6の上縁側に開封部10が備えられ、その開封部10の外方側に突出端部100が備えられている。各々のシートの突出端部100の開封容易部30近傍には、突出端部より内方に、半円状の摘まみ部103が隣接されて異なった位置に形成されている。これにより、袋体6のいずれか一方のシート面のみを容易に摘まむことができる。開封の際には、摘まみ部103が備えられる箇所を指先104で摘まんで表面シート101と裏面シート102を離間させることで、開封容易部30が剥離され、袋体6が開封される。
(その他)
In Example 6, with reference to FIG. 7, a bag body 6 is described in which a protruding end portion is provided on the outer side of the opening portion and the shape of the topsheet 101 and the backsheet 102 is different. An opening portion 10 is provided on the upper edge side of the bag body 6, and a protruding end portion 100 is provided on the outer side of the opening portion 10. In the vicinity of the easy-to-open portion 30 of the protruding end portion 100 of each sheet, a semicircular knob portion 103 is formed adjacent to and inward of the protruding end portion at a different position. Thereby, only one sheet surface of the bag body 6 can be easily picked. At the time of opening, the easy-to-open part 30 is peeled off and the bag body 6 is opened by picking the place where the knob 103 is provided with the fingertip 104 and separating the top sheet 101 and the back sheet 102.
(Other)
・上記の実施例では、袋体の上縁に開封部が備えられた例を説明したが、本発明はこれに限定されず、袋体の下縁又は側縁に開封部が備えられるものとしてもよい。
・図2では、各種の開封部の実施例を示したが、これらに限定されず本発明の趣旨を逸脱しない範囲での変更が認められることは勿論のことである。
In the above embodiment, the example in which the opening portion is provided on the upper edge of the bag body has been described. However, the present invention is not limited thereto, and the opening portion is provided on the lower edge or side edge of the bag body. Also good.
In FIG. 2, various examples of the opening portion are shown, but it is needless to say that the present invention is not limited to these examples and can be modified without departing from the spirit of the present invention.
・実施例6では、開封容易部近傍に切り欠きが備えられる袋体の例を説明したが、表面シートと裏面シートに段違いができるように重ねられて袋体としてもよく、突出舌片により摘まみ部を形成してもよい。
・上記の実施例では、ヒートシールにより封鎖されている袋体の例を説明したが、本発明はこれに限定されず、接着剤等を用いて封鎖される袋体であってもよい。
・今回開示された実施の形態はすべての点で例示であって、制限的なものではないと考えられるべきである。本発明の技術的範囲は、上記した説明に限られず特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
In Example 6, an example of a bag body provided with a notch in the vicinity of the easy-to-open portion has been described. However, the bag body may be overlapped on the top sheet and the back sheet so as to be stepped, and may be picked by a protruding tongue piece. You may form a momi part.
In the above embodiment, an example of a bag body sealed by heat sealing has been described. However, the present invention is not limited to this, and a bag body sealed using an adhesive or the like may be used.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The technical scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.
1,2,3,4,5,6…袋体、
10…開封部、11…閉鎖線、12…ドット状ヒートシール、
13…両端部、14,15,16,17…線状ヒートシール、
18…折れ曲がった隅部、
20…背貼りシール部、21…中央部、22…端部、
23…両側のシート面、24,25…指先、
30…開封容易部、40…開封容易構造、
41,42,43,44,45,46,47…開封容易構造、
50…内容物収容部分、51…菓子パン、52…パンの端部、54…端部、
53…ウェットシート、55…平滑な部分、56…開口端部、
57…ふりかけ、60…重要表示部、
70…ファスナー、71…屈曲ファスナー、
72…ファスナー基端、73…凸部、74…凹部、
80…上縁、81…両側縁、82…下縁、
90…開放端部、91,101…表面シート、92,102…裏面シート、
100…突出端部、103…切り欠き、104…指先
1, 2, 3, 4, 5, 6 ... bags,
10 ... opening part, 11 ... closing line, 12 ... dot heat seal,
13 ... Both ends, 14, 15, 16, 17 ... Linear heat seal,
18 ... Folded corner,
20 ... Back-sealed seal part, 21 ... Center part, 22 ... End part,
23 ... Sheet surfaces on both sides, 24, 25 ... Fingertips,
30 ... easy opening part, 40 ... easy opening structure,
41, 42, 43, 44, 45, 46, 47 ... easy opening structure,
50 ... Contents storage part, 51 ... Sweet bread, 52 ... End of bread, 54 ... End,
53 ... Wet sheet, 55 ... Smooth portion, 56 ... Open end,
57 ... Sprinkle, 60 ... Important display area,
70 ... fasteners, 71 ... bent fasteners,
72 ... Fastener base end, 73 ... Convex part, 74 ... Concave part,
80 ... Upper edge, 81 ... Both sides, 82 ... Lower edge,
90 ... Open end, 91, 101 ... Top sheet, 92, 102 ... Back sheet,
100 ... protruding end, 103 ... notch, 104 ... fingertip

Claims (8)

  1.  内容物を収容する袋体であって、
    第1のシート内面と第2のシート内面を封鎖させる線状に伸びる開封部を含み、
    前記開封部は熱溶着により封鎖されると共に、開封の起点とされる開封容易部が含まれ、
    前記開封容易部は、前記開封部が伸びる線に沿う単位長さあたりの熱溶着部の面積密度が、前記開封容易部に隣接する位置の単位長さあたりの熱溶着部の面積密度よりも小さくされている、
    ことを特徴とする袋体。
    A bag for containing contents,
    A linearly extending opening that seals the first sheet inner surface and the second sheet inner surface;
    The opening portion is sealed by thermal welding, and includes an easy opening portion that is the starting point of opening,
    In the easy-opening portion, the area density of the heat-welded portion per unit length along the line along which the opening portion extends is smaller than the area density of the heat-welded portion per unit length in a position adjacent to the easy-opening portion. Being
    A bag characterized by that.
  2.  前記開封部には、前記開封部が伸びる線に沿って少なくとも一本の連続した閉鎖線が含まれている、
    ことを特徴とする請求項1に記載の袋体。
    The opening includes at least one continuous closing line along a line along which the opening extends.
    The bag according to claim 1.
  3.  前記閉鎖線が、開封部において内容物を収容する側に設けられている、
    ことを特徴とする請求項2に記載の袋体。
    The closing line is provided on the side that accommodates the contents in the opening portion,
    The bag according to claim 2.
  4.  前記袋体は、第1のシート内面と第2のシート内面との両縁が貼り合わされた背貼りシール部が、背面部の略中央部に形成された袋体とされ、前記略中央部の近傍に前記開封容易部が設けられている、
    ことを特徴とする請求項1乃至請求項3のいずれか一項に記載の袋体。
    The bag body is a bag body in which a back-sealed seal portion in which both edges of the first sheet inner surface and the second sheet inner surface are bonded is formed in a substantially central portion of the back surface portion, The opening easy part is provided in the vicinity,
    The bag according to any one of claims 1 to 3, wherein the bag body is characterized.
  5.  前記開封部が、略コ字形状に折れ曲がった線状に形成されている、
    ことを特徴とする請求項1乃至請求項4のいずれか一項に記載の袋体。
    The opening part is formed in a line shape bent in a substantially U shape,
    The bag body according to any one of claims 1 to 4, wherein the bag body is characterized.
  6.  前記開封部の内容物収容部側に、筋状の凸部と筋状の凹部が咬合されて密封部をなすファスナーが備えられている、
    ことを特徴とする請求項1乃至請求項5のいずれか一項に記載の袋体。
    On the content storage part side of the unsealing part, a streak-like convex part and a streaky concave part are engaged to form a sealing part,
    The bag according to any one of claims 1 to 5, wherein
  7.  前記開封部の外方側に、開放された開放端部が備えられている、
    ことを特徴とする請求項1乃至請求項6のいずれか一項に記載の袋体。
    The open end is provided on the outer side of the opening portion,
    The bag body according to any one of claims 1 to 6, wherein the bag body is characterized.
  8.  第1のシートと第2のシートの各々の前記開封部の外方側に突出端部が備えられ、
    前記各々の突出端部が異なった形状に形成されている、
    ことを特徴とする請求項1乃至請求項7のいずれか一項に記載の袋体。
    Protruding end portions are provided on the outer sides of the opening portions of the first sheet and the second sheet,
    Each protruding end is formed in a different shape,
    The bag body according to any one of claims 1 to 7, wherein the bag body is characterized.
PCT/JP2013/065742 2013-06-06 2013-06-06 Bag WO2014196071A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016049978A (en) * 2014-08-28 2016-04-11 株式会社川島製作所 Bag package having easy-to-open structure and packaging machine for manufacturing the same
JP7171111B1 (en) 2022-08-12 2022-11-15 株式会社W Frozen food storage bag and manufacturing method thereof

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Publication number Priority date Publication date Assignee Title
US3163288A (en) * 1962-02-09 1964-12-29 Astra Apotekarnes Kem Fab Package
JPS5623466A (en) * 1979-07-25 1981-03-05 Mitsubishi Plastics Ind Packed vessel having easy unsealing property
JPS61501842A (en) * 1984-04-16 1986-08-28 マ−チン アンドリユ− マツグ Easy-to-open and reclosable packages and their manufacturing equipment
JPS6238920Y2 (en) * 1980-12-19 1987-10-03
DE3705591A1 (en) * 1987-02-21 1988-09-01 Sengewald Karl H Bag made of thermoplastic film
EP1081059A2 (en) * 1999-09-04 2001-03-07 CFS GmbH Kempten Package, especially for medical use, and machine for its manufacture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163288A (en) * 1962-02-09 1964-12-29 Astra Apotekarnes Kem Fab Package
JPS5623466A (en) * 1979-07-25 1981-03-05 Mitsubishi Plastics Ind Packed vessel having easy unsealing property
JPS6238920Y2 (en) * 1980-12-19 1987-10-03
JPS61501842A (en) * 1984-04-16 1986-08-28 マ−チン アンドリユ− マツグ Easy-to-open and reclosable packages and their manufacturing equipment
DE3705591A1 (en) * 1987-02-21 1988-09-01 Sengewald Karl H Bag made of thermoplastic film
EP1081059A2 (en) * 1999-09-04 2001-03-07 CFS GmbH Kempten Package, especially for medical use, and machine for its manufacture

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016049978A (en) * 2014-08-28 2016-04-11 株式会社川島製作所 Bag package having easy-to-open structure and packaging machine for manufacturing the same
JP7171111B1 (en) 2022-08-12 2022-11-15 株式会社W Frozen food storage bag and manufacturing method thereof
WO2024034510A1 (en) * 2022-08-12 2024-02-15 株式会社W Frozen-food-preserving bag body, and method for producing same
JP2024025447A (en) * 2022-08-12 2024-02-26 株式会社W Frozen-food-preserving bag body, and method for producing the same

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