JP5225775B2 - Gusseted bag with fastener - Google Patents

Description

  The present invention relates to a gusseted bag with a fastener that can be filled in a short time when filling contents.

  In general, a gusset bag has a so-called “town” that is folded inwardly on both sides of the bag before filling the contents, but spreads in the thickness direction of the bag after filling the contents. Since the depth is formed in the bag, the bag has higher capacity efficiency than a flat bag or a standing bag having the same surface area.

  In addition, when filling the contents, the gusset bag has an opening area (filling port area) up to a substantially rectangular shape by pulling outward a pair of opposed flat portions constituting the front side and the back side of the bag. Therefore, the filling operation using a filling nozzle or the like can be performed in a short time.

  Further, in the gusset bag, when the contents filled in the bag are poured out, the spout once opened can be resealed in the vicinity of the opening that is opened and becomes the spout. There is known a gusseted bag with a fastener that is provided with a flexible fastener (sometimes called “zipper”) and has the property of storing the contents remaining in the bag.

  Normally, when installing a fastener near the opening of a gusset bag, the folds and fasteners on both sides of the bag overlap and interfere with fastener installation. Therefore, the folds may be cut off or folded back. Therefore, it is necessary to install a fastener so that eclectic is not an obstacle, and various studies have been made so far.

  For example, in Patent Document 1, the folding lines on both side surfaces from the opening end of the bag are folded and pulled out in the direction opposite to the original folding direction, and the inner surface of the bag is exposed to form an opening surface. There is disclosed a zippered gusset bag in which a male member and a female member of a zipper are respectively provided in the entire upper end portion at a position that does not overlap with an opening surface of a side surface portion.

  However, the gusseted bag with a zipper disclosed in Patent Document 1 is a flat bag or a standing bag even though it has a signature when filling the contents from the opening on the upper end side where the zipper is attached. Similarly, since the opening does not spread in the thickness direction of the bag, it can be opened only by the width of the flat portion of the bag, and the characteristic that the gusset bag originally has a wide filling port is There was a problem that it was lost and time was required for the filling work.

  In addition, in a gusset bag filled with contents, when the contents are poured out from the bag, it is possible to easily take out a desired amount of contents without dispensing more than necessary contents at a time. The characteristic which can be preserve | saved is calculated | required and the preservability of the content is also ensured by resealing a spout after the content is poured out.

  For example, in Patent Document 2, when the contents are poured out from the bag, a detachable male member and a female member are provided between a flat portion facing the upper end corner portion of the bag main body portion of the flat bag. There is disclosed a fastener-equipped packaging bag to which a pouring unit serving as a pouring outlet comprising a fastener is attached and attached.

  However, although the packaging bag with a fastener of patent document 2 is a packaging bag with a fastener which has the characteristic which can take out a desired amount of contents easily, and also has the characteristic which can re-seal a spout Further, the gusset bag does not have the characteristic of excellent capacity efficiency, and the characteristic of the gusset bag originally excellent in filling efficiency, and further investigation is required.

JP-A-7-24941 JP-A-2005-350104

  It is an object of the present invention to take a wide filling port when filling the contents and perform the filling operation in a short time, and at the time of dispensing (extracting) the contents, a desired amount of contents from the bag. It is an object of the present invention to provide a gusseted bag with a fastener from which an object can be easily taken out.

  The inventors of the present invention have intensively studied to achieve the above object, and have provided a pouring unit at a specific position of the upper end corner portion of the bag main body, and a side surface to which the pouring unit is not attached when filling the contents. By using the signatures that were folded inward of the part, it was found that the filling port could be widened and the filling operation could be performed in a short time, and the present invention was completed based on these findings. It was.

That is, the gusseted bag with a fastener of the present invention is formed so as to include at least a pair of opposed flat portions constituting the front side and the rear side of the bag, and a folding line folded inwardly in the bag shape. It has a bag body portion and a fastener that are open at the upper end portion and the lower end portion, and closes one of the open upper end portion and the lower end portion of the bag body portion. In the gusseted bag with fastener formed by
A pouring unit having wall portions facing each other is joined and attached between the inner surface of the signature at the upper corner portion of the bag body and the flat portion facing the inner surface of the signature,
At a position corresponding to the dispensing unit, a through hole is provided on the signature so that opposing signatures penetrate each other, and the outer surface of the wall surface portion of the dispensing unit that contacts the inner surface of the signature through the through hole. And the inner surface of the flat portion on the side where the pouring unit is not attached are bonded to each other so that the fold on the side where the pouring unit is attached and the other fold facing the fold Combine and
The pouring unit includes a fastener including a male fastener provided on one inner surface of the wall portion and a female fastener provided on the other inner surface and detachable from the male fastener. This is a gusseted bag with fastener.

  In the gusseted bag with fastener, it is preferable that the lower end portion is closed and the upper end portion is opened among the opened upper end portion and lower end portion of the bag main body portion.

  In the gusseted bag with the fastener, the bag main body portion to which the dispensing unit is attached has a gusset-shaped bottom portion with a folding line folded inwardly in a bag shape, and the bottom portion is provided with self-supporting property. It is preferable.

  In the gusseted bag with fastener, it is preferable that the contents are filled from the opened open end, and the opened open end is closed.

  According to the present invention as described above, when filling the contents, a wide filling port can be taken, and the filling operation can be performed in a short time. A gusseted bag with a fastener is provided, from which an amount of contents can be easily removed.

The fastener-equipped gusseted bag of the present invention has at least two side surfaces formed so as to have a pair of opposed flat portions constituting the front side and the rear side of the bag, and a fold line folded inwardly in the bag shape. A bag main body portion and a fastener having an upper end portion and a lower end portion opened, and one of the open upper end portion and the lower end portion of the bag main body portion is closed to form an open end portion. In gusseted bags with fasteners,
A pouring unit having wall portions facing each other is joined and attached between the inner surface of the signature at the upper corner portion of the bag body and the flat portion facing the inner surface of the signature,
The pouring unit includes a fastener including a male fastener provided on one inner surface of the wall portion and a female fastener provided on the other inner surface and detachable from the male fastener. It is a feature.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The bag main body part which comprises the gusset bag with a fastener concerning embodiment of this invention was folded inward of the pair of plane part 1 which comprises the front side and back side of a bag, and the bag inside It is not particularly limited as long as it is a bag main body portion composed of two side surface portions 3 formed so as to have the fold line 2 and an upper end portion and a lower end portion opened together. For example, the bag main body portion 101 shown in FIG. Can be mentioned.

  FIG. 1 is a perspective view of a bag body 101 that constitutes a gusseted bag with a fastener according to an embodiment of the present invention. As shown in FIG. 1, an upper opening corner portion 9 of the bag main body portion has an attachment opening 4 serving as an attachment portion of the extraction unit 7, a through-hole 5 serving as a fixed portion of a signature, and an extraction unit described later. 7 may be provided with an insertion port 6 that serves as an insertion site for the knob 19 formed on the outer surface of 7.

  FIG. 2 is a view showing a position at which the dispensing unit 7 is attached to the bag body 101, and FIG. 3 is a front view of the bag body 102 to which the dispensing unit 7 is attached. As shown in FIG. 2, the dispensing unit 7 has a mounting opening between the inner surface 10 of the fold of the upper end corner portion 9 of the bag body 101 and the inner surface of the flat portion 1 facing the inner surface 10 of the fold. In the part 4, it joins and is attached and the bag main-body part 102 of FIG. 3 is formed.

  The through hole 5 is provided on the signature so that the opposing signatures of the upper end corner portion 9 of the bag main body 101 shown in FIG. 1 pass through, and the inner surface 10 of the signature is connected to the signature through the through hole 5. The outer surface of the wall surface portion 15 of the pouring unit 7 in contact with the inner surface of the flat surface portion 1 on the side where the pouring unit 7 is not attached can be bonded and fixed.

A method for joining the outer surface of the wall surface portion 15 of the pouring unit 7 and the inner surface of the flat surface portion 1 to which the pouring unit 7 is not attached through the through hole 5 is not particularly limited. It is preferable that the material of the innermost layer of the packaging film constituting 1 and the material constituting the pouring unit 7 be the same material having heat sealability, so that joining by heat sealing becomes possible.
Note that the “heat-similar homogeneous material” refers to a material having a characteristic capable of being joined by heating.

  When the through hole 5 is not provided on the signature, the outer surface of the signature on the side where the pouring unit 7 is attached and the outer surface of the other signature facing the outer surface of the signature are variously changed. You may paste together by the method.

  The method for laminating the outer surfaces of the signatures is not particularly limited. For example, the method of pasting using an adhesive or the like and the material of the outermost layer of the packaging film constituting the signature of the side surface portion 3 are heated. By having sealing properties, a method of bonding by heat sealing, or the like can be given.

  When the contents are poured out by fixing the signature with the extraction unit 7 and the other signature in the side surface on the side where the extraction unit 7 is attached by the above-described method or the like, This is preferable because the other signature can be prevented from interfering.

The bag main body 102 shown in FIG. 3 has both an upper end 11 and a lower end 12 open.
In the gusseted bag with a fastener according to the embodiment of the present invention, in the bag main body portion 102, one of the upper end portion 11 and the lower end portion 12 opened together is closed, and the other open end portion is A gusseted bag with fasteners open.

  The fastener-equipped gusset bag 103 shown in FIG. 4 is a first embodiment of the present invention in which the opened lower end portion 12 of the bag body portion 102 is closed and the upper end portion 11 is opened, and is shown in FIG. The fastener-attached gusset bag 104 is a second embodiment of the present invention in which the opened upper end portion 11 of the bag body portion 102 is closed and the lower end portion 12 is opened.

  In the gusseted bag with a fastener according to the embodiment of the present invention, when filling the contents in the bag, in the first embodiment of the present invention, the opened upper end 11 side is opened and the filling port In the second embodiment of the present invention, the opened lower end 12 side can be opened to form a filling port.

  FIG. 6 is a view of the gusseted bag with fastener according to the embodiment of the present invention as seen from the outside of the filling port. FIG. 6A is a view of the open upper end 11 serving as a filling port when viewed from the outside of the filling port in the gusseted bag 103 with a fastener of the first embodiment, and FIG. 6B is a fastener of the second embodiment. In attached gusset bag 104, it is the figure which looked at the open lower end part 12 used as a filling port from the outside of a filling port.

  In the gusseted bag 103 with a fastener shown in FIG. 6A, the pair of opposed flat portions 1 and 1 are pulled outward so that the upper end side surface on the side where the pouring unit 7 is not attached is folded. Is spread in the thickness direction of the gusset bag, and on the other hand, the upper side surface portion on the side where the pouring unit 7 is attached is bent at the boundary areas X and X between the pouring unit 7 and the flat portions 1 and 1. The opening area (filling port area) can be widened to a substantially pentagonal shape.

  Moreover, in the gusset bag 104 with a fastener shown by FIG. 6B, in order to make the lower end part 12 which does not provide the pouring unit 7 into a filling port, a pair of opposing plane parts 1 and 1 are each pulled outward. As a result, the folds on both side surfaces of the lower end spread in the thickness direction of the gusset bag, so that it can take a substantially rectangular shape wider than the filling port of the fastener-equipped gusset bag 103 shown in FIG. 6A and take a wider filling port. It becomes easy.

  The gusseted bag with a fastener according to an embodiment of the present invention has a substantially pentagonal shape (shown in FIG. 6A) or a substantially rectangular shape (shown in FIG. 6B) when filling the contents without hindering the opening of the filling port when the fastener is filled. Since a wide filling port can be taken, a filling nozzle having a relatively large filling port diameter can be directly inserted into the filling port, and the filling operation can be performed in a short time.

The fastener-equipped gusset bag 103 according to the first embodiment of the present invention can take a wide filling port, and in addition, the closed lower end portion 12 side, for example, as shown in FIG. Sealing at an angle is preferable in that self-supporting property can be imparted to the gusseted bag 103 with fastener.
On the other hand, the fastener-attached gusset bag 104 according to the second embodiment of the present invention is preferable in that it can take a wider filling port at the opened lower end portion 12.

FIG. 8 shows a bag main body 102 shown in FIG. 3, which has a gusset-shaped bottom portion 14 provided with a folding line 13 folded inward of the bag on the opened lower end portion 12 side. It is a perspective view of the gusset bag 105 with a fastener of 3rd embodiment of this invention to which this was provided.
As shown in FIG. 8, the bottom portion 14 is attached by joining the peripheral edge of the bottom portion 14 and the lower ends of the inner surfaces of the flat surface portions 1, 1 and the side surface portions 3, 3.

9A and 10A are views showing a state in which the gusset-shaped bottom portion 14 including the folding line 13 folded inward of the bag is folded in the gusseted bag 105 with fastener shown in FIG.
As shown in FIG. 9A and FIG. 10A, the fold line 13 folded inward of the bag is folded and provided so as to face upward of the fastener-equipped gusset bag 105.

  Each joining method of the periphery of the bottom part 14 and the lower end of the inner surface of each plane part 1, 1 and each side part 3, 3 is not particularly limited. For example, the following two shapes (see FIGS. 9 and 10): The gusset bag 105 with a fastener to which the bottom portion 14 is joined is shown in FIG.

First, as a first shape of the bottom, there is a gusseted bag 105 with a fastener shown in FIG. 9A.
FIG. 9B is an exploded view of the side portions 3 and 3 and the bottom portion 14 shown in FIG. 9A from the plane portions 1 and 1. The shape of the bottom 14 shown in FIG. 9A will be described with reference to FIG. 9B.
9A, as shown in FIG. 9B, an arbitrary one point of the folding line 2 of the folds of the side surface parts 3 and 3 is set as a base point A, and the fold of the side surface part 3 is folded at the folding line 2 at the base point A. Folded so as to be perpendicular to the direction, a fold line L is formed, the fold line L of each side surface portion 3, 3 overlaps with the fold line 13 of the bottom portion 14, and each corner portion C 3 of each side surface portion 3, ₃ , C ₃ coincide with the corners C ₁₄ , C _{14 of} the bottom part 14 and the corners C ₁ , C ₁ of the planar parts 1, 1, respectively, and the periphery of the bottom part 14 corresponds to the planar parts 1, 1. And it is a gusset bag with a fastener joined in agreement with the lower end of the inner surface of each side part 3,3.

Next, as a second shape of the bottom, there is a gusseted bag 105 with a fastener shown in FIG. 10A.
FIG. 10B is an exploded view of the side surfaces 3 and 3 and the bottom 14 shown in FIG. 10A from the flat surfaces 1 and 1. The shape of the bottom 14 shown in FIG. 10A will be described with reference to FIG. 10B.
In FIG. 10A, as shown in FIG. 10B, an arbitrary one point of the folding line 13 of the bottom 14 is defined as a base point B, and the folding of the bottom 14 is perpendicular to the folding direction of the folding line 13 at the base point B. The fold line M is formed so that the fold line M of the bottom portion 14 overlaps the fold line 2 of each side surface portion 3, and each corner C ₁₄ , C _{14 of} the bottom portion ₁₄ is connected to each side surface portion 3, 3. Each corner C ₃ , C ₃ and each corner C ₁ , C ₁ of each plane part 1, ₁ , respectively, and the peripheral edge of the bottom 14 is each plane part 1, 1 and each side part 3, 3. It is a gusset bag with a fastener joined to the lower end of the inner surface of the fastener.

  The fastener-equipped gusset bag 105 of the third embodiment of the present invention shown in FIG. 8 has gussets with excellent capacity efficiency at the bottom in addition to the side surface portions 3 and 3, so that the capacity efficiency can be further improved. In addition, since the bottom portion 14 is provided with a self-supporting property, it has a high utility value such as excellent display suitability and is preferably employed.

  11 is a gusset bag with fastener 103 in FIG. 4 or a gusset bag with fastener 104 in FIG. 5 from a filling port formed on the opened upper end portion 11 side or lower end portion 12 side. FIG. 6 is a fourth embodiment of the present invention filled with contents and closed at the opened open end.

  The gusset bag with fastener 107 shown in FIG. 12 is filled with the contents from the filling port formed on the opened upper end portion 11 side in the gusset bag with fastener 105 of FIG. It is the 5th embodiment of the present invention which is closed and is provided with independence by the bottom.

  The contents filled in the gusseted bag with fastener according to the embodiment of the present invention are not particularly limited, and for example, liquid contents such as shampoo, rinse, liquid detergent, edible oil, and business seasoning; Grain-shaped contents such as pet food, coffee beans, and rice; Granular or powder-like contents such as wheat flour, powder detergent, and commercial seasonings; and the like.

  In the present invention, the dispensing unit 7 attached to the bag body 101 is configured to separate the closed end 50 to form the dispensing port 51, as shown in FIG. The characteristic that the desired amount of contents can be easily taken out, and the contents remaining in the bag can be stored by resealing (sealing) the spout after the contents are poured out. It is comprised so that it may have.

FIG. 13 is a diagram illustrating a configuration example of the dispensing unit 7.
Hereinafter, the configuration of the dispensing unit 7 will be specifically described with reference to FIGS.

  FIG. 13A is a front view of the dispensing unit 7 showing a state in which the inner surfaces of the wall surface portions 15 face each other and overlap each other, and FIG. 13B is a deployment of the dispensing unit 7 shown in FIG. 13A in the arrow direction. FIG. 13C is a diagram illustrating a state in which the dispensing unit 7 illustrated in FIG. 13B is viewed from the bottom 21 side of the wall surface portion 15.

  The pouring unit 7 shown in FIG. 13 includes a wall surface 15, a fastener 8 composed of a male fastener 8 </ b> A and a female fastener 8 </ b> B, a notch 16, an opening line 17, a center fold line 18, a knob 19, a top 20, and a bottom. 21, side edge portions 22 a, 22 b, 22 c, holding holes 23, and sealing margins 24, 25 are formed as a single member by injection molding.

  In the side edge portions 22a and 22b, the side edge portion 22a is formed as both end portions on the top 20 side of each wall surface portion 15 in a straight line so that the side edge portion 22b is an axis of symmetry. The edge part 22b is shape | molded as an edge part in which each wall surface part 15 is mutually connected. Further, the side edge portions 22a and 22b are formed so as to be perpendicular to each other.

As shown in FIGS. 13A and 13B, in the pouring unit 7, the top portion 20 of the wall surface portion 15 may indicate the upper end portion corresponding to the intersection of the side edge portion 22 a and the side edge portion 22 b, The bottom portion 21 of the portion 15 refers to a lower end portion corresponding to the intersection of the side edge portion 22b and the side edge portion 22c.
The pouring unit 7 shown in FIG. 13 is formed as a single member by injection molding in which wall portions 15 facing each other are connected by side edge portions 22b.
The pouring unit used in the present invention is not limited to the pouring unit 7 shown in FIG. 13. For example, the wall surface portions 15 facing each other are not connected by the side edge portion 22 b, and two members are used. It may be a dispensing unit comprised of:

In addition, as a material constituting the pouring unit used in the present invention, any material can be used as long as the shape of the desired pouring port can be formed and the shape can be maintained at the time of pouring the contents. There is no particular limitation.
Specifically, polypropylene, polyethylene, polystyrene, polyester, polyurethane, polybutadiene, polynorbornene, trans polyisoprene, styrene / butadiene rubber, polyamide, polycarbonate, and the like can be used as the material of the dispensing unit.

The center fold line 18 is formed so as to divide each wall surface portion 15 into two when the top portion 20 and the side edge portion 22c of each wall surface portion 15 are connected. When the contents are poured out, the central fold line 18 moves outward along the central fold line 18 so that each wall surface portion 15 moves outward so that the central fold lines 18 of the respective wall surface portions are separated from each other. It is possible to easily form a substantially diamond-shaped spout by folding it with fingers.
The processing means for providing the center fold line 18 is not particularly limited, and examples thereof include thin-wall processing with a thin thickness.

  In addition, although the center folding line 18 may be provided over the whole region which connects the top part 20 and the side edge part 22c of each wall surface part 15 (illustrated in FIG. 13), it is a closed end at the time of pouring the contents. It is not necessary to be provided in the area | region (area | region from the top part 20 to the intersection of the opening line 17) cut | disconnected as 50 (not shown).

The unsealing line 17 is formed so as to be orthogonal to the central folding line 18 between the top part 20 of each wall surface part 15 and the fastener 8. When the contents of the unsealing line 17 are to be dispensed, the unsealing end of the dispensing unit 7 is finally moved as shown in FIG. 50 can be separated from the bag body.
The processing means for providing the opening line 17 is not particularly limited, and examples thereof include thin-wall processing with a thin wall thickness, perforation processing, and rough surface processing.

  The sealing margin 24 is formed so as to project outward toward the outside with a certain width along the side edge portion 22a at the side edge portion 22a forming both ends on the top portion 20 side of each wall surface portion 15. The sealing margin 25 is formed so as to protrude outward with a constant width at the side edge portion 22b forming the end portion where the wall surface portions 15 are connected to each other, like the sealing margin 24.

The sealing margin 24 is aligned so as to coincide with the upper end seal portion when closing the opened upper end portion 11 of the fastener-attached gusset bag.
On the other hand, when the side edge seal part is provided in the upper end corner part 9 of the gusset bag with fastener, the sealing margin 25 is aligned so as to coincide with the side edge seal part.

  On the seal margin 24 formed and provided along the side edge portion 22 a, an opening facilitating means serving as a starting point for opening is provided on an extension line of the opening line 17. The means for facilitating opening is not particularly limited, and representative examples thereof include a notch 16 (shown in FIGS. 13A and 13B), a thin portion formed with a thin wall thickness, and a rough surface portion formed of an aggregate of fine holes. It is mentioned in.

  The knob 19 is outwardly moved to the outer surface of each wall 15 corresponding to the male fastener 8A and the female fastener 8B formed on the inner surface of each wall 15 or in the vicinity thereof. It is formed into a shape that can be easily picked with fingers so as to protrude toward the surface.

  When opening the gusseted bag with the fastener, the knob 19 can smoothly engage and disengage the fastener 8 by picking the knob 19 with fingers and pulling them outward. It has a function that can be opened. The knob 19 can be a particularly effective means when the spout 51 is relatively small and opening with only fingers is difficult.

  As shown in FIG. 13A, the holding hole 23 is provided so that the wall surface portions 15 pass through in the vicinity of the top portion 20 in a state where the inner surfaces of the wall surface portions 15 face each other and overlap each other. The holding hole 23 uses a parts feeder (part alignment supply device) to reliably determine the direction of the dispensing unit 7 when the dispensing unit 7 is attached to the bag body 101. This is a part used to hold in a predetermined orientation.

  The shape and number of the holding holes 23 are not particularly limited as long as the directionality of the dispensing unit 7 can be determined reliably. Examples of the shape of the holding holes 23 include a circular shape (shown in FIG. 13A), a square shape, and the like. The shape may be triangular, and the number of the holding holes 23 may be one (shown in FIG. 13A) in a state where the inner surfaces of the wall surface portions 15 are opposed to each other, Since the effect of ensuring directionality is high, two or more (not shown) may be used.

  The male fastener 8 </ b> A is formed so as to protrude from the inner surface of the wall surface portion 15, and the female fastener 8 </ b> B is formed so as to protrude from the inner surface of the other wall surface portion 15. The male fastener 8A and the female fastener 8B are bent at the center fold line 18 of each wall surface portion 15 and are formed so as to be parallel to the side edge portion 22c so as to maintain a certain distance from the side edge portion 22c. The

  In the present invention, the form of the male fastener 8A and the female fastener 8B is not particularly limited as long as the fasteners can be reliably engaged with each other and the engaged fasteners can be smoothly engaged and disengaged. For example, there are a generally used fastener 30 shown in FIG. 14 and a fastener 40 provided with a dust biting prevention function shown in FIG.

  The fastener 30 of the form shown in FIG. 14 is a fastener that shows the shape of a cross section of a commonly used fastener 30, and FIG. 14A is a cross sectional view showing a state in which the fasteners are engaged with each other, and FIG. FIG. 3 is a cross-sectional view showing a state where the fasteners of each other are detached.

  As shown in FIGS. 14A and 14B, the male fastener 31 is formed such that the engaging protrusion 32 protrudes from the inner surface of the wall surface portion 15. The base 33 of the engaging protrusion 32 is formed into a flat plate shape so as to be orthogonal to the wall surface portion 15, while the tip 34 of the engaging protrusion 32 is formed into a substantially circular cross section.

  14A and 14B, the female fastener 35 is formed such that a pair of opposing engagement walls 36 protrude from the inner surface of the wall surface portion 15. The engagement wall 36 is formed in an arc shape in cross section, and the cross section shape is formed in an arc shape also in a space between a pair of opposing engagement walls 36.

  In the fastener 30 shown in FIG. 14, as shown in FIG. 14A, the tip 34 of the engagement protrusion 32 of the male fastener 31 is fitted into the arc-shaped space portion of the engagement wall 36 of the female fastener 35. Thus, the fasteners can be reliably engaged with each other, while the engaged fasteners can be smoothly engaged and disengaged as shown in FIG. 14B.

  The fastener 40 of the form shown in FIG. 15 is a fastener showing the shape of the cross section of the fastener 40 to which the dust biting prevention function is given, and FIG. 15A is a cross sectional view showing a state in which the fasteners are engaged with each other. FIG. 15B is a cross-sectional view showing a state in which the fasteners of each other are detached.

  As shown in FIGS. 15A and 15B, the male fastener 41 is formed such that a pair of opposing engaging claws 42 are orthogonal to the wall surface portion 15 and protrude from the inner surface of the wall surface portion 15. The base 43 of the engaging claw 42 is formed with a depression on the outside thereof.

15A and 15B, the female fastener 45 is formed so that a pair of opposing engaging walls 46 are orthogonal to the wall surface portion 15 and protrude from the inner surface of the wall surface portion 15. And the nail | claw which protrudes toward the inner side is shape | molded at the front-end | tip 47 of the engaging wall 46, respectively.
The pair of engaging walls 46 are formed at intervals so as to be positioned outside the pair of engaging claws 42 of the male fastener 41, respectively.

  In the fastener 40 shown in FIG. 15, the recess on the outer side of the root 43 of the engaging claw 42 of the male fastener 41 is located on the inner side of the tip 47 of the engaging wall 46 of the female fastener 45, as shown in FIG. 15A. By engaging the claws, the fasteners can be reliably engaged with each other, while the engaged fasteners can be smoothly detached as shown in FIG. 15B.

  When the contents filled in the bag are powdered contents, the contents are likely to adhere to the surface of the fastener, the engagement of the fasteners becomes worse, and the engagement should be performed smoothly. May be difficult. In order to avoid such an inconvenience, the fastener 40 provided with the dust biting prevention function shown in FIG. 15 is preferably employed.

  As shown in FIGS. 15A and 15B, the male fastener 41 has a space between the groove wall 44 and the groove wall 44 of the pair of opposing engaging claws 42, so that the contents are formed on the surface of the fastener 40. When adhering, the contents adhering to the groove wall 44 are accommodated in the space, so that the engagement of the mutual fasteners can be prevented.

FIG. 16 is a diagram showing a procedure when the contents are poured out from the gusseted bag with fastener 106 according to the fourth embodiment of the present invention shown in FIG. 11.
Hereinafter, the content extraction procedure will be described in detail with reference to FIGS.

  16A is a view showing a state in which the closed end 50 of the dispensing unit 7 is cut off, FIG. 16B is a view showing a state in which the spout 51 is formed in a substantially rhombus shape, and FIG. It is a figure which shows the state at the time of the content being poured out from the exit 51, and FIG. 16D is a figure which shows the state in which the spout 51 was resealed.

  First, by applying an appropriate finger force to the notch 16 provided in the sealing margin 24 shown in FIG. 13, the notch 16 can be easily opened and opened along the opening line 17. Proceeding smoothly, finally, as shown in FIG. 16A, the closed end 50 of the dispensing unit 7 is completely separated from the bag body. Moreover, you may cut away using cutters, such as scissors.

  Next, as shown in FIG. 16B, the knob portion 19 provided so as to protrude from the outer surface of each wall surface portion 15 is picked with fingers in the direction of the arrow toward the outside, and the direction of the arrow is respectively outward. The male fastener 8A and the female fastener 8B engaged with each other are detached by being pulled, and are bent outward along the central fold line 18 to form a substantially diamond-shaped spout 51. .

  Since the spout 51 formed in a substantially rhombus shape is easy to maintain its shape even when the contents are poured out, the gusset bag with a fastener in FIG. 16B is used as the spout as shown in FIG. 16C. By tilting moderately to the side where 51 is provided, a desired amount of contents can be easily poured out (taken out) from the bag.

  After the contents are poured out, the spout 51 formed in a substantially rhombus shape is closed with fingers, and the male fastener 8A and the female fastener 8B that have been disengaged from each other can be easily moved with fingers. By engaging, the spout 51 is resealed as shown in FIG. 16D, and the preservability of the contents remaining in the bag can be ensured.

  The packaging film constituting the bag body portion and the bottom portion of the gusseted bag with fastener according to the embodiment of the present invention is not particularly limited as long as it is a packaging film generally used for manufacturing bags, for example, a single layer film. The laminated film which consists of three layers of a base material layer (outermost layer), an intermediate | middle layer, and an inner surface layer (innermost layer) may be sufficient.

The base material layer is preferably a layer that forms the outermost layer of the bag and has functions such as printability, pinhole resistance, and impact resistance. Examples of the material for the base material layer include uniaxial or biaxially stretched films such as polyethylene terephthalate, polypropylene, polyamide, and ethylene vinyl alcohol copolymer, and laminates of these stretched films.
When oxygen barrier properties and water vapor barrier properties are required for these stretched films as bags, for example, metals such as aluminum and inorganic oxides such as aluminum oxide and silicon oxide are vapor-deposited. It is also possible to use a vapor-deposited film; a coated film coated with polyvinylidene chloride, a polyacrylic acid resin, or the like (barrier coat); Further, paper, cellophane, or the like may be used.

  The intermediate layer is preferably a layer having functions such as oxygen barrier properties, water vapor barrier properties, and tearability. As the material of the intermediate layer, when oxygen barrier properties and water vapor barrier properties are required for the use of the bag, for example, metal foil such as aluminum foil; metal such as aluminum, aluminum oxide, and silicon oxide A film on which an inorganic oxide such as a film is deposited; a film on which a polyvinylidene chloride, a polyacrylic acid resin, or the like is coated (barrier coat);

The inner surface layer is preferably a layer that forms the innermost layer of the bag and can be heat sealed. As the inner layer, for example, an unstretched film made of low-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene vinyl acetate copolymer, ionomer resin, or the like, or those obtained by extruding these resins in layers Can be mentioned.
In addition, since the pouring unit 7 can be attached in one step by heat sealing, it can be attached between the inner surface of the signature of the upper end corner portion of the bag main body and the flat portion facing the inner surface of the signature. It is preferable to use a material that can be heat-sealed with the inner surface layer, for example, a homogeneous material.

  The method of laminating these layers to form a laminated film is not particularly limited as long as it is a laminating method generally used for forming a laminated film. For example, the film is laminated by a dry laminating method using an adhesive. The method of forming may be sufficient, and the method of laminating | stacking by the extrusion laminating method using thermoadhesive resin may be used. Moreover, the method of laminating | stacking by another lamination method and forming a film may be sufficient.

It is a perspective view of the bag main-body part 101 which comprises the gusset bag with a fastener concerning embodiment of this invention. It is the figure which showed the position where the extraction | pouring unit is attached to the bag main-body part. It is a front view of the bag main-body part 102 to which the extraction | pouring unit was attached. It is a front view of the gusset bag 103 with a fastener of 1st embodiment of this invention. It is a front view of the gusset bag 104 with a fastener of 2nd embodiment of this invention. It is the figure which looked at the filling port of the gusset bag with a fastener concerning an embodiment of the invention from the outside of the filling port. It is a front view of the gusset bag with a fastener by which the self-supporting property was given to the gusset bag with a fastener 103 of the first embodiment of the present invention. It is a perspective view of the gusset bag 105 with a fastener of 3rd embodiment of this invention. It is a front view of the gusset bag 105 with a fastener of 3rd embodiment of this invention. It is a front view of the gusset bag 105 with a fastener of 3rd embodiment of this invention. It is a front view of the gusset bag 106 with a fastener of 4th embodiment of this invention. It is a front view of the gusset bag 107 with a fastener of the 5th embodiment of this invention. It is a figure which shows the structural example of the extraction | pouring unit. It is a figure which shows the shape of the cross section of the fastener generally used. It is a figure which shows the shape of the cross section of the fastener to which the powder biting prevention function was provided. It is a figure which shows the procedure at the time of pouring the contents.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plane part 2 Folding line 3 Side face part 4 Mounting opening part 5 Through-hole 6 Insertion port 7 Outgoing unit 8 Fastener 8A Male fastener 8B Female fastener 9 Upper end corner part 10 Inner surface of signature 11 Upper end part 12 Lower end part 13 Folding line 14 Bottom part 15 Wall part 16 Notch 17 Opening line 18 Center folding line 19 Knob part 20 Top part 21 Bottom part 22a Side edge part 22b Side edge part 22c Side edge part 23 Holding hole 24 Seal margin 25 Seal margin 30 Commonly used fastener 31 Male mold Fastener 32 Engagement projection 33 Root of engagement projection 34 Tip of engagement projection 35 Female fastener 36 Engagement wall 40 Fastener 41 provided with anti-chucking function 41 Male fastener 42 Engagement claw 43 Engagement claw root 44 Groove wall 45 Female fastener 46 Engagement wall 47 End of engagement wall 50 Closed end 51 Spout X Boundary area A Base point B Reference point L Fold line M Fold line C ₁ Corner of flat part C ₃ Corner of side part C ₁₄ Corner of bottom part 101 Bag body part 102 Bag body part to which pouring unit is attached 103 Gusset bag with fastener of the present invention 104 Gusset bag with fastener of the invention 105 Gusset bag with fastener of the present invention 106 Gusset bag with fastener of the present invention 107 Gusset bag with fastener of the present invention

Claims (4)

The upper and lower ends are composed of at least a pair of opposing flat portions constituting the front and rear sides of the bag and two side portions formed so as to have a folding line folded inwardly in the bag. In the gusset bag with a fastener formed by closing either one of the opened upper end portion and the lower end portion of the bag body portion.
A pouring unit having wall portions facing each other is joined and attached between the inner surface of the signature at the upper corner portion of the bag body and the flat portion facing the inner surface of the signature,
At a position corresponding to the dispensing unit, a through hole is provided on the signature so that opposing signatures penetrate each other, and the outer surface of the wall surface portion of the dispensing unit that contacts the inner surface of the signature through the through hole. And the inner surface of the flat portion on the side where the pouring unit is not attached are bonded to each other so that the fold on the side where the pouring unit is attached and the other fold facing the fold Combine and
The pouring unit includes a fastener including a male fastener provided on one inner surface of the wall portion and a female fastener provided on the other inner surface and detachable from the male fastener. Characteristic gusseted bag with fastener. 2. The gusseted bag with fastener according to claim 1 , wherein, of the opened upper end portion and lower end portion of the bag main body portion, the lower end portion is closed and the upper end portion is opened. The bag main body portion to which the dispensing unit is attached has a gusset-shaped bottom portion including a fold line folded inwardly in a bag shape, and is provided with independence by the bottom portion. The gusseted bag with a fastener according to claim 1 or 2 . The gusseted bag with a fastener according to any one of claims 1 to 3 , wherein contents are filled from the opened open end, and the opened open end is closed.

Images