EP1431207B1 - Gusset bag - Google Patents

Gusset bag Download PDF

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Publication number
EP1431207B1
EP1431207B1 EP03028507A EP03028507A EP1431207B1 EP 1431207 B1 EP1431207 B1 EP 1431207B1 EP 03028507 A EP03028507 A EP 03028507A EP 03028507 A EP03028507 A EP 03028507A EP 1431207 B1 EP1431207 B1 EP 1431207B1
Authority
EP
European Patent Office
Prior art keywords
portions
folding
bag body
gusset bag
flat surface
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP03028507A
Other languages
German (de)
English (en)
French (fr)
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EP1431207A1 (en
Inventor
Toshikazu Kenmotsu
Kazuhiro Umenaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hosokawa Yoko KK
Original Assignee
Hosokawa Yoko KK
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Filing date
Publication date
Application filed by Hosokawa Yoko KK filed Critical Hosokawa Yoko KK
Publication of EP1431207A1 publication Critical patent/EP1431207A1/en
Application granted granted Critical
Publication of EP1431207B1 publication Critical patent/EP1431207B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/16—Bags or like containers made of paper and having structural provision for thickness of contents of special shape

Definitions

  • the present invention relates to a gusset bag of a self-standing structure according to the preamble of independent claim 1.
  • a self-standing packaging or package bag a standing pouch or flat-bottom type gusset bag, and some techniques have been applied to such packaging bags to ensure a high standing ability.
  • a bottom portion of the bag is formed with a flat member or like.
  • a gusset bag which is not provided with a flat bottom member, in which a bottom portion of the bag is folded so as to provide a flat bottom portion (having flat bottom surface area) and, hence, ensure the self-standing property.
  • a gusset bag in Japanese Patent Laid-open (KOKAI) Publication No.
  • a flat surface portion and side surface portion are heat sealed , i.e., thermally sealed with heat, so as to provide a triangular shape, and score lines extending laterally are formed to these heat-sealed portions as portions to be bent therealong so as to easily bent the bottom portion of the gusset bag.
  • the present invention was conceived by taking the above matters into consideration and an object of the present invention is therefore to substantially eliminate defects or drawbacks encountered in the prior art mentioned above and to provide a gusset bag having an improved stable self-standing property or structure by folding a bottom portion of the gusset bag without giving any damage thereto.
  • a gusset bag comprising:
  • the folding auxiliary portion may be formed as a recessed portion by reducing a thickness of the bottom portion of the gusset bag body.
  • the recessed portion is formed in a manner that a through hole is formed to the side surface portion and the through hole is then covered up by bonding the flat surface portion to the side surface portion.
  • the folding auxiliary portion may be formed as a coarse surface portion composed of aggregation of a number of fine holes formed to at least one of the flat surface portion and the side surface portion.
  • the folding auxiliary portion may be formed to at least one of the flat surface portion and the side surface portion and composed of a linear cut-out formed so as to extend in a width direction of the gusset bag body and a crack-spreading prevention portions formed to both end portions of the linear cut-out.
  • Each of the crack-spreading prevention portions is a circular-arc continuous to the end portion of the linear cut-out.
  • the folding auxiliary portion may be formed to at least one of the flat surface portion and the side surface portion positioned on one side in the thickness direction of the gusset bag body with the folding line formed to the side surface portion being boundary thereof.
  • the folding auxiliary portion may be formed to one of the flat surface portion and to a portion of the side surface portion on the other side flat surface portion side from the folding line formed to the central portion of the side surface portion.
  • the bottom portion may have a portion positioned inside the folding line when the bottom portion is folded and the folded line having a recessed shape is overlapped with the folding auxiliary portion at the folding auxiliary portion forming portion.
  • the folding auxiliary portion to the bottom portion of the gusset bag body, the rigidity of this portion is reduced, thus easily folding the bottom portion and then forming it to be flat, whereby the gusset bag having an improved self-standing structure can be provided.
  • the folding auxiliary portion is composed of the linear cut-out and the crack-spreading prevention portions, preferably in shape of circular-arc, formed to both ends of the linear cut-out extending in the width direction of the bag body
  • the generation and the spreading of the crack can be effectively prevented.
  • the spreading of the crack can be further prevented by forming the circular-arc portion so that the tangential line at this portion directs downward of the gusset bag body.
  • the spreading of the crack towards the inner content accommodation portion of the bag body can be also prevented.
  • the folding auxiliary portion is formed to at least one of the flat surface portion and the side surface portion positioned on one side in the thickness direction of the gusset bag body with the folding line formed to the side surface portion being boundary thereof, the direction along which the bottom portion is folded can be easily determined, thus being advantageous.
  • the folding auxiliary portion is formed from the recessed portion, a good outer appearance of the gusset bag can be provided.
  • the bottom portion has a portion positioned inside of the folding line when the bottom portion is folded and the folded line having a recessed shape is overlapped with the folding auxiliary portion at the folding auxiliary portion forming portion, since the folding line is independently formed, the folding direction along which the bottom portion of the gusset bag body is folded can be easily determined with the recessed surface being the inside thereof.
  • the take-out portion may be composed of a take-out device which comprises a take-out tube and a cap engaged with the take-out tube, one end of the take-out tube being inserted into the bag body and the other one end projecting outward therefrom, and the take-out tube is clamped between the one (top) edge portions of the flat surface portions and then tightly sealed thereto at a peripheral portion thereof.
  • a take-out device which comprises a take-out tube and a cap engaged with the take-out tube, one end of the take-out tube being inserted into the bag body and the other one end projecting outward therefrom, and the take-out tube is clamped between the one (top) edge portions of the flat surface portions and then tightly sealed thereto at a peripheral portion thereof.
  • opposing flat surface portions and side surface portions are connected through a fusing treatment, thereby forming triangular heat-seal portions.
  • the bottom portion of the gusset bag body can be also easily folded in the predetermined direction and the folded state, i.e., flat bottom shape, can be surely maintained.
  • the self-standing ability of the gusset bag body can be also obtained.
  • the gusset bag having a good outer appearance can be provided.
  • a gusset bag 1A comprises a bag body 2A composed of a pair of opposing flat portions (flat surface portions) 3, 3 and a pair of side portions (side surface portions 4, 4) connecting both side edges of the flat portions 3, 3, respectively.
  • the thus formed bag body 2A has an upper (top) end edge to which a take-out device 20 for taking the inner content out of the gusset bag body 2A is mounted or provided.
  • the flat surface portions 3, 3 of the bag body 2A are formed from film members each in rectangular shape, and these rectangular film members are opposed to each other so as to constitute the front and back surfaces of the bag body 2A.
  • each of the side surface portions 4, 4 is formed from a film member in rectangular shape, and the rectangular side surface film member 4 is folded along its longitudinal central line 5 so as to form a gusset in the manner that when both the side surface portions 4, 4 are joined to both the flat surface portions 3, 3, the inwardly folded center lines 5, 5 of both the side surface portions 4, 4 are opposed to each other.
  • the side edges of the respective flat surface portions 3, 3, and the side edges of the respective side surface portions 4, 4 are thermally fused and joined to each other so as to form heat-seal portions 6, 6 on both the side portions of the bag body 2A.
  • an upper heat seal portion 7 and a lower heat-seal portion 8 are respectively formed to the upper and lower edge portions of the bag body 2A by thermally fusing the flat surface portions 3, 3 and the side surface portions 4, 4 to each other.
  • thermally fusing i.e., heat sealing processes, the peripheral portions of the flat and side surface portions 3 and 4 are fused and sealed to provide a tubular bag body 2A which define an inner accommodation portion 10 which can be filled up with the inner content.
  • laminate films composed of a plurality of film materials which are laminated are utilized.
  • the following laminate films may be utilized. PET(12 ⁇ )/DL/Al(9 ⁇ )/DL/ON (15 ⁇ )/DL/CPP (50 ⁇ ) and PET(12 ⁇ )/DL/ON(15 ⁇ )/DL/AL(15 ⁇ )/DL/CPP(50 ⁇ ) (Layers from the outer side of the bag body 2A in the described order).
  • the outer layer is formed from a film material formed of synthetic resin such as polyester type (series), polyamide type, polypropylene type, polycarbonate type, polyacetal type, or like type synthetic resin.
  • synthetic resin such as polyester type (series), polyamide type, polypropylene type, polycarbonate type, polyacetal type, or like type synthetic resin.
  • non-oriented, uniaxially oriented or biaxially oriented film may be utilized as such film material, and the thickness of the film is not specifically limited to 12 ⁇ m and will be determined in consideration of the minimally required strength, manufacturing cost and like, usually in a range of 12 ⁇ m to 25 ⁇ m.
  • the synthetic resin as the outer layer may be printed on its inner surface, so that it may be required for such outer layer to have a property or performance suitable for printing, and in this meaning, the use of the uniaxially or biaxially oriented film may be preferably utilized.
  • Synthetic paper, cellophane, paper, unwoven fabric or like may be utilized alternately as occasion demands.
  • the inner layer there are utilized one or more kinds of resins such as for example, low density polyethylene, intermediate (middle) density polyethylene, high density polyethylene, straight-chain (linear) low density polyethylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-acrylic acid methyl copolymer, ethylene-metacrylic acid copolymer, polypropylene, ethylene-propylene copolymer, which are utilized in form of film sheet having thickness of 30 to 200 ⁇ m.
  • resins such as for example, low density polyethylene, intermediate (middle) density polyethylene, high density polyethylene, straight-chain (linear) low density polyethylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-acrylic acid methyl copolymer, ethylene-metacrylic acid copolymer, polypropylene, ethylene-propylene copolymer,
  • a barrier layer is generally formed from aluminium foil and may be formed, for example, from metal foil such as iron, copper or tin, polyethylene terephthalate (PET), polyaimde, polyvinyl chloride, polycarbonate, polyvinyl alcohol, or saponified ethylene-vinyl acetate copolymer, or a film on which polyvinyliden chloride is coated, or a film on which inorganic material such as aluminium, silicon oxide, aluminium oxide, indium oxide, tin oxide, zirconium oxide, magnesium oxide, or a film of polyvinyliden chloride.
  • metal foil such as iron, copper or tin, polyethylene terephthalate (PET), polyaimde, polyvinyl chloride, polycarbonate, polyvinyl alcohol, or saponified ethylene-vinyl acetate copolymer, or a film on which polyvinyliden chloride is coated, or a film on which inorganic material such as aluminium, silicon oxide, aluminium oxide,
  • the thickness of the above material for the barrier layer may be set properly in consideration of functions required for gusset bag. Furthermore, it may be generally required for such barrier film to have gas shut-off property, mechanical stiffness, anti-bending property, anti-sticking property, impact-proof property, abrasion-proof property, anti-cold property, heat resisting property, anti-chemical property or like, and the barrier film is hence disposed for suitably attaining such properties or performance for the barrier layer of the gusset bag.
  • a deposit (evaporated) layer there may be utilized aluminium, silicon oxide, indium oxide, tin oxide, zirconium oxide, magnesium oxide or like.
  • the take-out device 20 may be mounted to the bag body 2A after the heat-sealing process to the side edges and lower (bottom) end edge 8 of the bag body 2A and before the heat-sealing process to the upper (top) end edge 7 thereof.
  • the take-out device 20 comprises a take-out tube or like member 21 and a cap 22 screw-engaged with the take-out tube 21.
  • the take-out tube 21 has one end inserted into the bag body through an upper end opening of the bag body 2A and the other one end projecting outward therefrom and the cap 22 screw-engaged with the upper end of the take-out tube 21 to close a take-out end opening of the take-out tube 21.
  • the take-out tube 21 is clamped between the upper edge portions of the flat surface portions 3, 3 and then tightly sealed thereto at its peripheral portion by means of heat-seal portion 7 so as not to create any gap between the outer peripheral surface of the take-out tube 21 and the inner surfaces of the flat surface portions 3, 3.
  • an inner content is supplied into the bag body 2A, i.e., inner content accommodation portion 10 thereof , and then the mouth portion of the take-out tube 21 is screwed with the cap 22.
  • the take-out device 20 also acts as take-in device through which the inner content is supplied into the bag body 2A.
  • the bottom portion of the bag body 2A is provided with the heat-seal portion 8, which has a middle portion 8a having a constant width along the lower edge of the bag body 2A, and on the other hand, whichhas sideendportions 8b, 8bextendingobliquelytowards the heat seal portions 6, 6 so as to form oblique boundaries to the inner content accommodation portion 10 so as to each provide a triangular shape as shown.
  • the lower end of the content accommodation portion 10 provides an upwardly opened shape from the lower edge portion of the bag body 2A.
  • the bottom portion of the bag body 2A is further formed, on the side of the outer edge of the accommodation portion 10 of the bag body 2A, with portions 11 for assisting easy folding ofthebottomportion, which will be called herein folding auxiliary portions 11, 11.
  • these folding auxiliary portions 11, 11 are through holes formed to the side surface portions 4, 4 folded towards inside between the flat surface portions 3, 3 at both the side portions 8b, 8b of the heat seal portion 8.
  • Each through hole of the folding auxiliary portions 11, 11 has an elliptical (slot) shape having long axis direction along the lower edge of the bag body 2A. That is, as shown in Fig.
  • the folding auxiliary portions 11, 11 have upper and lower edges extending substantially linearly in the width direction of the gusset bag 1A and arcuate side ends connected to the linear edges. As shown in Fig. 2 , the folding auxiliary portions 11, 11 thus formed to the folded side surface portions 4, 4 are covered up or hidden from appearance by the outer flat surface portions 3, 3.
  • the opposed flat surface portions 3, 3 may be bonded to each other by utilizing the folding auxiliary portions 11, 11.
  • the folding auxiliary portions 11, 11 can be utilized as bonded portions of the flat surface portions 3, 3, so that it is not necessary to additionally form a bonding portion as in a conventional gusset bag.
  • a folding (folded) line 12 is formed to the portion corresponding to the folded portion of the bottom portion of the bag body 2A so as to extend laterally in the width direction thereof.
  • the folding line 12 is a line to determine the folding direction of the bottom portion of the bag body 2A.
  • the folding line 12 is formed by putting and then pressing the bag body 2A in a die so as to provide a recessed shape 12a on the flat surface portion side in the bottom portion folding direction and a protruded shape 12b on the side opposing to the above-mentioned side of the flat surface portion 3.
  • the folding line 12 accords with the upper edge of the folding auxiliary portion 11.
  • Fig. 5 shows the gusset bag 1A of this embodiment of the state that the bottom portion thereof is folded.
  • the rigidity of the bottom portion of the bag body 2A is reduced by the folding auxiliary portions 11, 11 formed to both the lateral sides of the bottom portion, and in addition, the bottom portion can be easily folded to thereby provide a flat structure by the preliminarily formed folding line 12.
  • the folding line 12 is formed, as mentioned before, so as to provide the recessed shape 12a on the flat surface portion side in the bottom portion folding direction and the protruded shape 12b on the opposing side of the flat surface portion 3. Further, in the example of Fig. 1 , it is possible to fold the bottom portion such that the surface to which the recessed portion 12a is formed is positioned inside the folding line 12. When once folded along such folding line 12, it can be prevented for the bottom portion of the bag body 2A to return to its original shape before the folding because of folding habit formed by the folding line 12, thus maintaining the flatness of the bag 1A and, hence, its standing ability.
  • the folding auxiliary portions 11, 11 may be formed in a manner other than the above-mentioned ones with reference to Fig. 2 .
  • Figs. 6A to 6F are examples showing the folding auxiliary portion formingpositions, in which the folding auxiliary portions are all formed on the outer edge side of the bag body 2A from the content accommodation portion 10 of the bag 1A.
  • Fig. 6A shows a state in which slot has a (i.e., elliptical) shape of through holes 11a, 11a formed only to both flat surface portions 3a and 3b to thereby form the folding auxiliary portion 11, and the side surface portion 4 is thermally fused to the inner surfaces of the flat surface portions 3a and 3b.
  • slot has a (i.e., elliptical) shape of through holes 11a, 11a formed only to both flat surface portions 3a and 3b to thereby form the folding auxiliary portion 11, and the side surface portion 4 is thermally fused to the inner surfaces of the flat surface portions 3a and 3b.
  • Fig. 6B shows a state in which the slot-shaped through holes 11a, 11a are formed only to the side surface portion 4 to thereby form the folding auxiliary portion 11.
  • This portion 11 is formed as the through hole 11a formed on one of the flat surface sides 3a with the folding line 5 being boundary.
  • the bottom portion of the bag body 2A can be easily bent and folded in a direction in which this flat side surface side 3a is folded inward. That is, by forming the folding auxiliary portion 11, the function for determining the folding direction to the arrowed direction can be attained. Further, the bottomportion will be further easily foldable by positioning the recessed portion 12a of the folding line 12 on the flat surface side 3a at which the folding auxiliary portion 11 is formed.
  • Fig. 6C shows a state in which the slot-shaped through hole 11a is formed only to one of the flat surface portions to thereby form the folding auxiliary portion 11.
  • the bottom portion of the bag body 2A can be easily bent and folded in a direction in which this flat side surface side 3a is folded inward.
  • the bottom portion will be further easily foldable by positioning the recessed portion 12a of the folding line 12 on the flat surface side 3a at which the through hole 11a is formed, thus also achieving the function for determining the folding direction to the arrowed direction.
  • Fig. 6D shows a state in which the slot-shaped through holes 11a, 11a, as folding auxiliary portions 11, 11, are formed to the other one 3b of the flat surface portions and a portion 4b of the side surface portion 4 positioned on the side of the one flat surface portion 3a other than the folding line 5 formed to the central portion of the side surface portion 4 in an asymmetrical shape with respect to the folding line 5.
  • Such asymmetrical arrangement of the through holes 11a, 11a will contribute to easy folding of the bottom portion of the bag body 2A to one flat surface side.
  • the function for determining the folding direction to the arrowed direction can be attained, and in addition, the bottom portion will be further easily foldable by positioning the recessed portion 12a of the folding line 12 on the flat surface side 3a at which the folding auxiliary portion 11 is formed.
  • Fig. 6F shows a state in which the slot-shaped through holes 11a, 11a, as folding auxiliary portions 11, 11, are formed to both the flat surface portions 3a and 3b and both portions 4a and 4b of the side surface portion 4 in the thickness direction of the bag body 2A with the folding line 5 being the boundary thereof.
  • the through holes are formed through the thickness direction of the bag body 2A, so that the rigidity of these portions is weakened.
  • the through hole(s), i.e., the folding auxiliary portion(s) 11, can be formed at least in one of the flat and side surface portions.
  • the through hole 11a is defined so as to have a slot (or elliptical) shape expanded in the lateral direction of the bag body 2A, the shape thereof is not limited to such shape and other shape, such as circular or rectangular shape, may be adopted.
  • a gusset bag of the present invention will be represented by Fig. 7 , showing a plan view of the gusset bag 1B.
  • the gusset bag 1B comprises a bag body 2B composed of a pair of opposing flat portions (flat surface portions) 3, 3 and a pair of gusset-shaped side portions (side surface portions 4, 4) connected to both side edges of the flat portions 3, 3, respectively.
  • the thus formed bag body 2B also has the upper (top) end edge to which the take-out device 20 for taking the inner content out of the gusset bag body 2B is mounted or provided, the take-out device 20 composed of the take-out tube 21 and the cap 22 screwed thereto.
  • the detailed explanation of the constructional elements or portions of the gusset bag 1B of this second embodiment corresponding to those of the gusset bag 1A of the first embodiment are omitted herein by adding the same reference numerals.
  • the gusset bag 1B is also provided with auxiliary portions 30, 30 for assisting the folding of the bottom portion of the bag body 2B on both lateral sides thereof on the outer edge side of the inner content accommodation portion 10 of the bag body 2B.
  • Each of these folding auxiliary portions 30, 30 is composed of, as shown in Fig. 8 , linear cut-outs formed to the flat surface portions 3, 3 in the lateral (width) direction of the bag body 2B and portions preventing crack-spreading provided at both ends of the linear cut-outs.
  • the folding auxiliary portion 30 is composed of a linear cut-out portion 31 as linearly extending cut-out and circular-arc portions 32, 32 as crack-spreading prevention portions formed to both ends of the linear cut-out 31 so as to provide a downwardly curved shape as viewed.
  • the linear portion 31 is formed, as shown in Fig. 7 , so as to accord with the forming position of the folding line 12, and by synergistically attaining both the functions of the linear portion 31 and the folding line 12, the bottom portion of the bag body 2B is extremely easily foldable.
  • the folding line 12 is formed by putting and then pressing the bag body 2B in a die so as to provide a recessed shape 12a on the flat surface portion side in the bottom portion folding direction and a protruded shape 12b on the side opposing to the above-mentioned side of the flat surface portion 3.
  • the circular-arc portions 32, 32 are formed to be continuous to both the ends of the linear portion 31 so as to be curved in the downward direction of the bag body 2B.
  • These circular-arc portions 32, 32 have end edge portions 33, 33 on which tangential lines 45, 45 extend in a direction perpendicular (at right angle) to the extension of the linear portion 31.
  • the bottom portion of the bag body 2B is folded with the linear line 31 of the folding auxiliary portion 30 being the reference or base line. Moreover, at the linear line forming position, the rigidity of the film member constituting the bag body 1B is weakened by the formation of the folding auxiliary portion 30, so that the bottom portion of the bag body 2B becomes extremely easily foldable by the synergistic effect and function of the folding auxiliary portion 30 and the folding line 12.
  • the direction along which the bottom portion is folded is decided by the direction along which the recessed portion 12a and the protruded portion 12b are formed. That is, the bottom portion is folded in the direction along which the recessed portion side is folded inward, and when once folded, according to the folded habit formed to the folding line 12, it is effectively prevented for the bottom portion of the bag body 2B to return to the original shape, and the flatness (state of flatness) of the bag body 2B can be maintained, thus ensuring high performance of self-standing ability.
  • the circular-arc portions 32, 32 formed as crack-spreading prevention portion formed to both the ends of the linear portion 31 attain the function for effectively preventing the crack from being generated at or spread from the folding auxiliary portion 30.
  • the folding auxiliary portion 30 is formed only from the linear portion 31, when the bottom portion of the bag body 2b is folded, there is a possibility of causing the concentration of stress on the end edges of the linear portion 31 and spreading the crack therefrom.
  • the formation of the circular-arc portions 32, 32 to the end edges of the linear portion 31 as in the present embodiment positively prevents the concentration of the stress on the end edge portions of the linear portion 31.
  • the tangential lines 45, 45 at these portions are directed to the downward direction of the bag body 2B, so that the crack will spread downward and not spread towards the content accommodation portion 10 of the bag body 2B, thus being effective and advantageous.
  • the folding auxiliary portion 30 may have a pattern such as shown in Fig. 11 , in which each of the folding auxiliary portions 30, 30 is composed of, a linear cut-out portion 31 as linearly extending cut-out formed on the folding line 12 and circular-arc portions 34, 34 as crack-spreading prevention portions formed to both ends of the linear cut-out portion 31 so as to be curved downward from both ends of the linear cut-out portion 31.
  • These circular-arc portions 32, 32 have end edge portions 35, 35 on which tangential lines 46, 46 extend in a circumferential direction so as to cross the extension of the linear cut-out portion 31 at an angle of ⁇ , which is an acute angle.
  • the stress concentration can be effectively prevented by the formation of such circular-arc portions 34, 34, thus preventing the cracks from being generated and spread.
  • the folding auxiliary portion 30 is not limited to the continuous cut-out line and, as shown in Fig. 12 , it may be formed as score line.
  • the folding auxiliary portion 30 is composed of the linear portion 31a formed on the folding line 12 and circular- arc portions 36, 36 formed to both ends thereof so as to be curved in the downward direction of the bag body 2B.
  • the positions to which the end edges 37, 37 are formed extend to portions on which tangential lines 47, 47 extend in a circumferential direction so as to cross the extension of the linear portion 31 at a right angle or an acute angle ⁇ .
  • crack-spreading prevention portions are formed in shape of circle or like, any other shape may be adopted.
  • Fig. 13 shows an example of the folding auxiliary portion 30 in which a linear cut-out 38 provides a circular-arc shape having a large curvature so as to substantially accord with the position of the folding line 12.
  • the crack-spreading prevention portions 39, 39 are formed by cutting off the bottom portion of the bag body 2B in the shape of a circle at both ends of the linear cut-out 38. According to this example, substantially the same function and effect as those mentioned with reference to the above examples may be attained.
  • the folding auxiliary portion 30 may be further formed in form of illustration of Fig. 14 .
  • the folding auxiliary portion 30 is composed of a linear cut-out 40 providing a circular-arc shape having a large curvature and the circular-arc portions formed as crack-spreading prevention portions 41, 41 formed to both end portions of the linear cut-out 40.
  • the circular-arc portions 41, 41 are curved in an upward direction of the bag body 2B as shown with respect to the linear cut-out 40, and the distal end portions 42, 42 of the circular-arc portions 41, 41 extend in the circumferential directions till the extensions of the tangential lines at the end edge portions 42, 42 directed downward with respect to the bag body 2B.
  • the folding auxiliary portions are formed to both the flat surface portions 3, 3, are described and explained.
  • the other examples may be further provided.
  • the folding auxiliary portion may be formed to at least one of the flat surface portions 3a, 3b and the side surface portion 4.
  • the folding auxiliary portion 30 is formed only to one flat surface side 3a with respect to the folding line 5 formed to the side surface portion 4 with respect to the thickness direction of the bag body, and such folding auxiliary portion can attain the function of determining the folding direction of the bottom portion of the bag body.
  • such function may be advantageously attained by forming the folding auxiliary portions 30 to the one flat surface portion 3b and to a portion 4a of the side surface portion 4 on the other one flat surface portion side 3b with respect to the folding line 5. That is, the folding auxiliary portions 30 in this example are formed to be asymmetric with respect to the folding line 5 in the thickness direction of the bag body 2B.
  • the gusset bag 1C of this embodiment comprises a bag body 2C composed of a pair of opposing flat portions (flat surface portions) 3, 3 and a pair of gusset-shaped side portions (side surface portions 4, 4) connected to both side edges of the flat portions 3, 3, respectively.
  • the thus formed bag body 2C also has the upper (top) end edge to which the take-out device 20 for taking the inner content out of the gusset bag body 2C is mounted orprovided, the take-out device 20 being provided with the take-out tube 21 and the cap 22 screwed thereto.
  • the detailed explanation of the constructional elements or portions of the gusset bag 1C of this third embodiment corresponding to those of the gusset bag 1A or 1B of the first or second embodiment are omitted herein by adding the same reference numerals.
  • Folding auxiliary portions 50, 50 of this third embodiment are formed to portions on the outer edge side than the inner content accommodation portion 10 of the bag body 2C on both lateral sides of the bottom portion thereof.
  • the folding auxiliary portions 50, 50 have coarse or rough surface portions on the surface of the flat surface portions 3, 3 at positions corresponding to both the side portions 8b, 8b of the heat seal portion 8 at the bottom of the bag body 2C.
  • the folding (folded) line 12 is formed, as shown in Fig. 18 , by placing and then pressing the bag body 2C in a die to form the recessed portion 12a on the side of the flat surface portion 3 in the direction along which the bottom portion of he bag body 2C is folded and the protruded portion 12b on the opposing side.
  • each of the folding auxiliary portions 50, 50 is formed as aggregation of a number of fine holes, and as shown in Fig. 19 , these holes are formed by forming a number of fine blind holes (not through holes) of a PET layer 70 outside an aluminium foil layer 71 being the barrier layer.
  • Such folding auxiliary portion 50 will be formed, for example, by passing the film material (member) through pressing roller unit on the surface of which sand paper having a predetermined roughness is attached.
  • reference numeral 72 is the ON layer and 73 is the CCP layer of the laminate film forming the flat surface portion of the bag body.
  • the folding auxiliary portions 50, 50 are formed as coarse or rough surface portions
  • the portions at which the folding auxiliary portions 50, 50 are formed are weakened in their rigidity, andhence, the bottom portion of the bag body 2C can be easily folded at these positions.
  • the folding line 12 has already been formed to the portion to be folded, the bottom portion of the bag body 2C can be further easily folded by the synergistic effects of the folding line 12 and the folding auxiliary portions 50, 50.
  • the direction along which the bottom portion is folded is determined by the direction of the formation of the recessed portion 12a and protruded portion 12 of the folding line 12. That is, the bottom portion of the bag body 2C is folded in the direction so as to accord inward folding direction of the recessed portion 12a. Once the bottom portion is folded, the bottom portion is prevented from returning to take the original shape because of folded habit and the flat condition of the bag body 2C can be maintained, thus ensuring the improved self-standing ability or performance.
  • folding auxiliary portions 50A, 50A may be formed so as to reach to a layer inside the outer layer or to penetrate the layer inside the outer layer.
  • the blind or through holes forming the coarse surfaces may be formed so as to reach or penetrate the layer inside the aluminium foil layer.
  • the folding auxiliary portions 50A, 50A are formed to the positions outside the content accommodation portion of the gusset bag body 2C, the formation of such folding auxiliary portions never adversely influence to the inner content.
  • reference numeral 74 denotes an evaporated PET layer
  • 72 denotes an ON layer
  • 73 is a CCP layer.
  • the folding auxiliary portions are formed to both the flat surface portions 3, 3, but in modified embodiments or examples, various forms may be adopted as shown in Fig. 21A to 21F , in which the folding auxiliary portion may be formed to at least one of the flat surface portions 3a, 3b and the side surface portion 4.
  • the folding auxiliary portion 50 is formed only to one flat surface side 3a with respect to the folding line 5 formed to the side surface portion 4 with respect to the thickness direction of the bag body, and such folding auxiliary portion can attain the function of determining the folding direction of the bottom portion of the bag body.
  • such function may be advantageously attainedby forming the folding auxiliary portions 30 to the one flat surface portion 3b and to a portion 4a of the side surface portion 4 on the other one flat surface portion side 3a with respect to the folding line 5. That is, the folding auxiliary portions 50 in this example are formed to be asymmetric with respect to the folding line 5 in the thickness direction of the bag body.
  • the surface roughing working will be effected from the outer layer side of each film material.
  • the folding auxiliary portions which are formed to the triangle shape portions of both side portions 8b, 8b of the heat seal portion 8 sealing the lower edge portions of the bag body, but the present invention is not limited to these embodiments, and in a modification, they may be formed to portions of both the side portions 8b, 8b corresponding to the lower end portion of the content accommodation portion 10 or portions lower than these portions.
  • thesefolding auxiliary portions may be formed otherwise to the central portion 8a of the heat seal portion 8 or to the entire portion of the heat seal portion 8.
  • the gusset bag body is formed from a film material forming a pair of flat surface portions 3 and another film material forming a pair of side surface portions 4 which are independently formed from the flat surface portions 3 and then bonded or joined together, but in a modification, these surface portions 3 and 4 may be formed from a single film materialhavingbothsideedgeswhicharebondedorjoinedtogether.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP03028507A 2002-12-17 2003-12-10 Gusset bag Expired - Lifetime EP1431207B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002383343A JP3460999B1 (ja) 2002-12-17 2002-12-17 ガゼット袋
JP2002383343 2002-12-17

Publications (2)

Publication Number Publication Date
EP1431207A1 EP1431207A1 (en) 2004-06-23
EP1431207B1 true EP1431207B1 (en) 2011-04-27

Family

ID=29398075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03028507A Expired - Lifetime EP1431207B1 (en) 2002-12-17 2003-12-10 Gusset bag

Country Status (5)

Country Link
EP (1) EP1431207B1 (ko)
JP (1) JP3460999B1 (ko)
KR (1) KR101051675B1 (ko)
CN (1) CN100430302C (ko)
HK (1) HK1066202A1 (ko)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4526816B2 (ja) * 2003-12-24 2010-08-18 株式会社フジシールインターナショナル パウチ容器
EP1947023B1 (en) * 2007-01-19 2010-10-20 Daiwa Gravure Co., Ltd. Storage bag
JP5244375B2 (ja) * 2007-01-19 2013-07-24 大和グラビヤ株式会社 収納袋
JP5593165B2 (ja) 2009-08-26 2014-09-17 株式会社細川洋行 ガゼット袋及び口部材付ガゼット袋、並びにそれらの製造方法
JP5588886B2 (ja) * 2011-01-26 2014-09-10 株式会社細川洋行 積層フィルムの融着構造、袋体、および袋体の製造方法
US9612230B2 (en) 2011-06-21 2017-04-04 Miura Co., Ltd. Water quality measuring device
WO2015111736A1 (ja) * 2014-01-24 2015-07-30 株式会社細川洋行 ガゼット袋、ガゼット袋の製造方法、及び積層体の接合方法
CN103786973A (zh) * 2014-01-27 2014-05-14 朱双海 用于包装食品的包装材料
CN104291003A (zh) * 2014-10-17 2015-01-21 大连竹菱包装工业有限公司 一种风琴拉链包装袋
CN105173341B (zh) * 2015-09-17 2017-12-05 罗仕泽 具有可隐藏信息图案的软包装袋及隐藏图文信息的方法
EP3593984A4 (en) * 2017-03-07 2020-12-30 Fuji Seal International, Inc. PROCESS FOR MANUFACTURING INTERMEDIATE MATERIAL FOR SOFT PACKAGING CONTAINER, PROCESS FOR MANUFACTURING SOFT PACKAGING CONTAINER, AND METHOD FOR MANUFACTURING SOFT PACKAGING CONTAINER PACKAGING BODY
CN111094141B (zh) * 2017-06-13 2023-05-02 凸版印刷株式会社 包装容器及其制造方法
AU2019301511B2 (en) * 2018-07-11 2024-08-29 Boehringer lngelheim Vetmedica GMBH Stand alone dispensing pouch
JP7514691B2 (ja) 2020-08-11 2024-07-11 株式会社フジシール ガセットパウチ
CN116829343B (zh) * 2021-02-18 2024-07-30 织宽工程株式会社 立式制袋填充包装机、装有内容物的薄膜包装袋的制造方法、装有内容物的薄膜包装袋

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1076006A (en) * 1964-11-05 1967-07-19 Automatic Bag Corp A method of making bags having internally coated surfaces
JPS5149210Y2 (ko) * 1972-03-31 1976-11-27
JPS53164522U (ko) * 1977-05-30 1978-12-23
JPS613798Y2 (ko) * 1981-11-27 1986-02-05
JP3056842B2 (ja) * 1991-07-09 2000-06-26 大日本印刷株式会社 易カット性包材の製造方法
DE4203798C2 (de) * 1992-02-10 1999-07-15 Rovema Gmbh Verfahren und Vorrichtung zur Herstellung eines Schlauchbeutels
JPH1059382A (ja) * 1996-08-19 1998-03-03 Dainippon Printing Co Ltd ファスナ−付きガゼット型包装用袋
JP3336878B2 (ja) * 1996-09-27 2002-10-21 花王株式会社 ガゼット袋
JP3043651B2 (ja) * 1997-03-26 2000-05-22 株式会社細川洋行 自立性容器およびこの自立性容器を用いた液体充填容器
US6095687A (en) * 1998-06-09 2000-08-01 Bob Dematteis Co. Flat bottomed plastic bag
JP4549472B2 (ja) * 1999-11-12 2010-09-22 大日本印刷株式会社 ガセット袋及び注出具付きガセット袋
JP2002211588A (ja) * 2001-01-19 2002-07-31 Dainippon Printing Co Ltd 自立袋

Also Published As

Publication number Publication date
JP2004196414A (ja) 2004-07-15
HK1066202A1 (en) 2005-03-18
KR101051675B1 (ko) 2011-07-26
JP3460999B1 (ja) 2003-10-27
EP1431207A1 (en) 2004-06-23
CN1513732A (zh) 2004-07-21
KR20040055619A (ko) 2004-06-26
CN100430302C (zh) 2008-11-05

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