JPH10175646A - Standing pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a standing pouch wherein an opening having a discharging guide can be provided by a simple operation, and the content can be safely and smoothly replaced. SOLUTION: This standing pouch 20 is constituted by providing an upper heat-seal pattern 2 wherein a non-sealed protruding part 3 is provided in the pouch at the top part of the pouch, a notch 6 which is made an opening 1 by cutting off in a manner to go across the non-sealed protruding part 3, or the notch 6 and a half-cut line 7 as auxiliary means for opening, which are provided at the peripheral edge of the top of the pouch, and engaging parts 8a, 8b in order to fixedly form a valley-shaped part, which is formed by doubly folding the opening 1 in the lateral direction, which are provided on the pouch end edges on right and left both sides of the opening 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standing pouch used for hermetic packaging of fluid contents such as liquids and powders, and more particularly, to a pouch or other container for opening contents when opened. The present invention relates to a standing pouch in which a simple type spout is provided so that it can be easily transferred.

[0002]

2. Description of the Related Art Conventionally, standing pouches are self-supporting and have the characteristics of a three-dimensional container despite being formed of a soft packaging material such as a plastic film. Also widely used as containers. However, regarding the opening, a method of removing and opening the entire upper portion from the notch provided on the upper part of the standing pouch, a method of cutting off the corner of the upper seal portion with scissors and opening it, and using this as a spout, Has been adopted in which a spout with a cap made of a plastic molded product or the like is attached to the upper opening in advance by thermal bonding or the like, and the cap is removed to open the cap.

[0003]

However, the method of removing and opening the entire upper portion of the standing pouch is problematic in that, especially when the contents are liquid, the pouch is soft and easily overflows from the upper portion when held by hand. There is.
Also, the method of cutting off the corner of the upper seal portion and opening it and using it as a spout can reduce the risk of accidentally overflowing the contents as compared with the above method in that the opening can be narrowed. However, when the opening is narrower, the film on both sides of the opening is more likely to adhere to each other on the inner surface, so it is difficult to continuously pour the film to the end with a stable flow. It is necessary to squeeze and push out, and when squeezed by hand, it instantaneously and vigorously flows out. Therefore, when transferring to another container or the like, there is a problem that the contents are easily spilled.

[0004] In addition, a method in which a spout with a cap or the like is attached to the upper opening in advance by heat bonding or the like and the cap is removed to open the opening is performed in advance by adjusting the size of the opening or the like to determine the properties of the contents or the like. Since a stable shape can be set so as to be suitable for the pouring condition, the safety and stability of pouring are superior to those of the above method. But,
When the spout of such a plastic molded product is attached to the standing pouch, the packaging bag becomes bulky,
The filling of the contents usually requires a small filling hole, so a special filling device is required.In addition, the cost of the filling port is extra, and the cost of packaging is greatly increased. is there.

The present invention has been made to solve such a problem, and an object of the present invention is to eliminate the need for a separate spout of a molded product or the like, and to easily fill the contents. In addition, it is possible to provide a standing pouch which can easily open a part of the upper part of the pouch, and can be safely and smoothly poured out from the opening to the end, and which is excellent in usability such as transfer. is there.

[0006]

The above objects can be attained by the present invention described below. That is, the invention described in claim 1 includes an opening auxiliary means for providing an opening in a part of the upper part of the pouch on the periphery of the upper part of the pouch,
A standing portion provided with locking portions for fixedly forming a valley portion formed by folding the opening into two as a guide for pouring, on the left and right side edges of the pouch on both sides of the opening. Consists of a pouch.

[0007] By adopting such a configuration, the pouch before filling with the contents has the full width opening at the upper part similarly to the ordinary standing pouch, so that the contents such as liquid can be easily opened from the large opening. Can be filled and sealed. When using a standing pouch in which the contents are hermetically sealed, first, a part of the upper part of the pouch is opened by using the opening assisting means provided on the upper part of the pouch, and then the opening is left and right. By folding the pouches and fixing the both side edges by locking portions provided on the left and right side edges of the pouch, a valley-shaped pouring guide is formed in the opening. Therefore, by simply holding the pouch body with one hand and tilting the pouch, the film in the opening is opened up and down by the internal pressure, and the contents can be easily poured out through the valley-shaped discharging guide. Then, since the film at the opening once opened is fixed at the side edges of the pouch by the locking portions, it does not close halfway, and the contents can be poured safely and smoothly to the end.

According to a second aspect of the present invention, the opening auxiliary means includes a heat seal pattern for forming a non-sealable convex portion in the pouch in the pouch upper region, and the opening auxiliary means crosses the non-sealable convex portion. The standing pouch according to claim 1, characterized in that the standing pouch is constituted by a notch or notch for cutting into a single piece, or a combination of a notch or notch and a half-cut line.

By adopting such a configuration, in addition to the above-mentioned functions and effects, when using a standing pouch in which the contents are sealed and packaged, the pouch can be more easily handled by hand without using tools such as scissors. Starting from the notch or notch provided in the upper peripheral portion, cut out so as to cross the non-seal convex portion formed by the seal pattern,
Part of the upper part of the pouch can be opened.

According to a third aspect of the present invention, the opening auxiliary means includes any one of a cutout portion, a half-cut line portion, and a perforated line portion forming an opening, and a pull tab sealed to cover the cutout portion. The standing pouch according to claim 1, characterized in that: The shape of the cutout portion forming the opening, the half-cut line portion, or the perforated line portion is not particularly limited, but for example, a shape formed by a curve such as an ellipse, a semi-ellipse, and a circle may be a pull tab. When peeling off, there is no risk that the extra part will be torn and the opening will be larger than necessary,
This is preferable in that a predetermined shape can be maintained.

The cutout portion, the half-cut line portion, and the perforated line portion forming the opening portion are formed by punching a film forming a pouch into a shape of an opening portion, and the cutout portion is opened. The half cut line portion is a film forming a pouch, for example, a cut line is formed in the shape of the opening to leave a part of the sealant layer thin from the surface side, and when the pull tab is peeled off by this, Since the sealant layer portion having no cut line is thin and has no strength, it is adhered to the pull tab together with the base film on the pouch surface, cut into the same shape as the half cut line portion, and opened. Further, the perforated line portion is formed by alternately arranging the cut line and the connecting portion to form the shape of the opening. In this case, since the strength of the connecting portion is weak, the connecting portion is removed by peeling off the pull tab. Cut along with the pull tab, according to the shape of the perforation line,
The film forming the pouch is cut open.

Therefore, by adopting the structure of the invention described in the third aspect, in addition to the operation and effect described in the first aspect of the invention, when using a standing pouch in which the contents are hermetically sealed and packaged, a hand is used. It is possible to more easily open the opening having a predetermined shape simply by peeling off the pull tab that is covered and sealed with the opening.

According to a fourth aspect of the present invention, the locking portion has a lock structure formed by an insertion portion and a receiving portion provided at a heat seal portion at an edge of the pouch. 4. The standing pouch according to any one of claims 1 to 3.

By adopting such a configuration, in addition to the functions and effects described in the first to third aspects of the present invention, a part of the upper part of the pouch is opened when a standing pouch in which the contents are sealed is used. After that, the opening is folded right and left, and the insertion portion having the lock structure is inserted into the receiving portion, which is automatically fixed, and a valley-shaped ejection guide is formed in the opening. By simply holding the pouch body with one hand and tilting the pouch, the contents can be safely and smoothly poured out to the end through the valley-like pouring guide.

According to a fifth aspect of the present invention, the locking portion is formed of a pressure-sensitive adhesive layer with a release film or release paper provided in a spot shape on the edge of the pouch, or a double-sided pressure-sensitive adhesive layer. 4. The method according to claim 1, wherein
A standing pouch according to any one of the above.

By adopting such a configuration, in addition to the functions and effects described in the first to third aspects of the present invention, a part of the upper part of the pouch is opened when using a standing pouch in which the contents are sealed and packaged. After that, when the locking portion provided in a spot shape at the edge of the pouch is a release film or an adhesive layer with release paper, peel off the release film or release paper, and Is a double-sided pressure-sensitive adhesive layer, as it is, the opening is folded right and left, and the adhesive layer surfaces at the edges of the pouches on both sides are bonded and fixed, and the valley-shaped opening is formed. Since the pouring guide is formed, the contents can be safely and smoothly poured out to the end simply by holding the pouch body with one hand and tilting the pouch.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention, such as a method for manufacturing a standing pouch, will be described below. First, the material used for producing the standing pouch of the present invention is not particularly limited, and any of the materials used for known standing pouches can be used as they are, and the types of contents to be packaged and the heat treatment after filling are used. A suitable material can be freely selected and used according to use conditions such as presence or absence. Usually, a laminated film mainly composed of plastic is used for the standing pouch, and specific examples of the configuration include the following.

(1) ON film / adhesive / L·LDPE
Film (sealant layer) (2) ON film / adhesive / uniaxially stretched HDPE film / adhesive / L / LDPE film (3) ON film / adhesive / uniaxially stretched PP film / adhesive / L / LDPE film (4) ON film / Adhesive / Uniaxially stretched PP film / Adhesive / Aluminum foil / Adhesive / L·LDPE film (5) ON film (silica vapor deposition layer) / Adhesive / Uniaxially stretched HDPE film / Adhesive / L·LDPE film (6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (7) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / LDPE layer) / adhesive / L ・LDP
E film (8) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (10) PET films / adhesives / EVOH films / adhesives / ON films / adhesives / CPP films, and the like, but are not limited thereto, and various combinations of laminated films can be used.

In the above description, the ON film is a biaxially stretched nylon film, the L / LDPE is a linear low density polyethylene, the HDPE is a high density polyethylene, the LDPE is a low density polyethylene, the PP film is a polypropylene film, and the PET film is 2 The axially stretched polyethylene terephthalate film and the EVOH film indicate a saponified ethylene-vinyl acetate copolymer film, and the CPP film indicates a non-stretched polypropylene film. Also,
The anchor coat is a kind of primer coat which is pre-coated on the base film side in order to improve adhesiveness when laminating a resin by extrusion coating.

In the construction of the laminated film, ON
Films and PET films are used as base films to impart mechanical strength and printability to pouches,
By using the film and the uniaxially stretched PP film so that the stretching direction matches the tearing direction when opening the pouch, the directionality of the tearing can be further stabilized. Then, an aluminum foil, a silica vapor-deposited layer, an EVOH film, and the like are laminated to provide gas barrier properties. In addition, as the sealant layer, two examples of an L-LDPE film and a CPP film have been described. However, the L-LDPE film has heat sealing stability and content resistance, such as stress cracking resistance to a surfactant. The CPP film is excellent in heat resistance and low odor, and is suitable for packaging of contents requiring these properties.

In the sealant layer, in addition to the above, depending on the content to be filled, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic ester copolymer may be used. Polymers, ionomers, polyester resins and the like can also be appropriately selected and used. In particular, ethylene-α-olefin copolymers polymerized using metallocene catalysts have excellent low-temperature heat sealability and hot sealability because the molecular weight distribution is narrow and the copolymerization ratio is stable. This is preferable in that a stable seal can be obtained.

Next, a method for manufacturing a standing pouch of the present invention, which is manufactured using the above-described laminated film, will be described. As described above, the standing pouch of the present invention can be safely and smoothly transferred to a cup or other container when opening and using a standing pouch in which contents such as liquid are hermetically sealed and packaged. ,
Rather than opening the top of the pouch in full width, an opening assisting means is provided so that an opening is provided in a part of the pouch, and a valley formed by folding the opened opening into two is used for pouring out a valley. It is characterized in that locking portions for fixedly forming a guide are provided at the edges of the pouch on both left and right sides of the opening.

Therefore, a processing operation for providing the opening auxiliary means and the locking portion is added. However, the basic bag making itself can be carried out using a conventional standing pouch bag making machine. it can. Then, the opening auxiliary means, a heat seal pattern forming a non-sealable convex portion in the pouch in the pouch upper region, and a notch or notch alone for cutting off the non-sealable convex portion, or In the case of using a combination of a notch or a notch and a half-cut line, first, a heat seal pattern for forming a non-sealable convex portion is obtained by changing a seal head of a filling and sealing machine into a predetermined shape and sealing. Can be formed.

The notch and the notch are provided at the end of the pouch and serve as a starting point of tearing when a part of the pouch is cut out to form an opening. Any shape can be used as long as it has a shape, for example, in the case of a notch, an I-shape, a V-shape, or a modified type thereof can also be used. These are also different in processing time depending on the position where they are provided, after the bag making when provided in the body heat seal portion on the side of the pouch, and after filling and sealing the contents when provided in the upper heat seal portion of the pouch, respectively, the bag making, Or it can be provided in-line or off-line with the filling seal.

The half-cut line is obtained by cutting, for example, only a base film layer having a surface having excellent strength among all layers of a laminated film forming a pouch by a mechanical method or irradiation of a laser beam. , Tearing along the half-cut line. Such a half-cut line can be provided before or after bag making, but is preferably provided in-line with bag making from the viewpoint of productivity.

In the case where the opening auxiliary means is constituted by any of a cutout portion forming an opening portion, a half-cut line portion and a perforated line portion, and a pull tab sealed over the cutout portion, the cutout portion , Half-cut line portion, perforated line portion, as described above, elliptical, semi-elliptical,
In the shape of a circle, etc., near the heat seal part on the top of the pouch,
Provided in-line or off-line with the bag making, and then, on top of that, by pulling a pull tab to cover it
In the same manner as described above, it is only necessary to peel and join in-line or off-line with the bag making and seal.

The pull tab is formed by laminating, for example, a heat-adhesive resin layer on one surface of a base sheet. The base sheet needs to have excellent heat resistance and mechanical strength such as tensile strength. Although not particularly limited, a PET film or an ON film is suitable, and a single film or a laminated film thereof can be used. In addition, the heat-adhesive resin layer needs to be bonded to the surface of the pouch by thermocompression bonding, and a known heat-adhesive resin, for example, a heat sealant, a hot melt material, etc. A suitable one can be selected and used.

In the method of laminating the thermo-adhesive resin layer on the base sheet, the thermo-adhesive resin may be formed into a coating solution such as a solution, which may be coated on the base sheet and dried for lamination. The adhesive resin may be laminated on the substrate sheet by a melt extrusion coating method. When a hot-melt material is used as the heat-adhesive resin, they can be laminated by a melt gravure coating method or the like. Such a pull tab is provided by being heat-sealed so as to cover an opening formed by any of the cutout portion, the half-cut line portion, and the perforated line portion. And a non-sealable knob is provided so that it can be peeled off.

Next, in the standing pouch of the present invention, the locking portions provided at the edges of the pouch on both the left and right sides of the opening are provided in the heat seal portion at the edge of the pouch by a lock structure formed by an insertion portion and a receiving portion. Is formed on one side with a return piece (hook) formed by a notch line to provide an insertion portion, and the other is provided with a slit-shaped cutout portion or a receiving portion formed by a notch line to constitute a locking type locking portion. be able to. At this time, if the dimensions of the insertion part and the receiving part do not fit within the width of the normal heat seal part,
The pattern of the heat seal portion can be appropriately changed to cope with the problem.

When the locking portion is formed of a release film or a pressure-sensitive adhesive layer with release paper provided in a spot shape at the edge of the pouch, a predetermined portion of the pressure-sensitive adhesive is applied, and an adhesive is applied thereon. The locking portion may be formed by attaching a release film or release paper, or more simply, a double-sided adhesive tape with a release film may be attached. When an adhesive is used for the locking portion as described above, the locking portion does not necessarily have to be provided on the left and right side edges of the pouch, and may be provided only on one edge. .

As still another method, the locking portion may be constituted by a double-sided pressure-sensitive adhesive layer. In this case, the double-sided pressure-sensitive adhesive is applied to predetermined positions of the edges of the pouch on both the left and right sides of the opening to be joined and dried, so that the pressure-sensitive adhesive applied surfaces of the double-sided pressure-sensitive adhesive are brought together and pressed. Only when this is done, the two adhere to each other, and a valley-like pouring guide can be formed at the opening.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more specifically below with reference to drawings and test examples. However, the present invention is not limited to these drawings,
It is not limited to test examples. In the different drawings, the same reference numerals are used for the parts having the same names.

FIGS. 1, 2 and 3 are front views showing the structure of one embodiment of the standing pouch of the present invention, respectively, showing the form after the contents are filled and sealed. FIG. 4 is a perspective view showing a state when using the standing pouch of the type shown in FIG. 1 (when the contents are poured out), and FIG. 5 is a view when using the standing pouch of the type shown in FIG. It is a perspective view which shows the state of (at the time of content pouring out).

In FIG. 1, a standing pouch 20 is shown.
Is formed by heat-sealing the bottom portion and the body portion with the heat-sealing portion 4, respectively, filling the opening with an upper portion with a liquid or the like, and then heat-sealing the upper portion into the shape of the heat-sealing pattern 2 and sealing the upper portion. Have been. As an opening auxiliary means for providing an opening 1 for discharging contents in a part of the upper part of the pouch, a non-seal convex part 3 is provided below the central part of the upper heat seal pattern 2. Further, a notch 6 and a half-cut line 7 for cutting out the non-seal convex portion 3 are provided on the upper part of the pouch.

Further, the upper part of the pouch is cut off by the notch 6 and the half-cut line 7, and the opening 1 is opened. Then, the valley formed by folding the opening 1 right and left is formed into a guide for pouring. Locking parts (8a, 8
b) is a lock structure formed by the insertion portion 8a and the receiving portion 8b, and is provided at the edge of the pouch on both the left and right sides of the opening 1. The shapes of the insertion portion 8a and the receiving portion 8b are as follows.
The shape is not limited to the drawings, and any shape can be freely used as long as one can be inserted into the other and locked. Further, the heat seal pattern 2 on the upper part of the pouch has a non-seal projection 3 for forming a partial opening 1 at a lower portion of a center portion thereof, and the non-seal projection 3 is formed on both side surfaces thereof. Are formed from the lower ends on both sides of the pouch toward the diagonally lower ends on both sides of the pouch. By heat sealing with a heat seal pattern having such a slope,
When the contents are poured out, an effect is obtained in which the contents can be poured smoothly without remaining until the end.

The standing pouch 20 having the above-mentioned shape is used.
Prepares a standing pouch having an opening at the top by heat-sealing the bottom and the body, filling the contents from the top, and then heat-sealing the opening at the heat-sealing pattern 2, and thereafter, The auxiliary means for opening (notch 6 and half-cut line 7) and the locking portion (8
a, 8b) may be provided. Alternatively,
At the time of heat sealing of the bottom and the trunk, the trunk is heat-sealed only one of the left and right trunk heat-sealed parts,
The other is opened in an unsealed state, the upper part is heat-sealed first with the heat seal pattern 2, and the opening auxiliary means and the locking portion are provided in this portion to produce an empty standing pouch. Thereafter, the contents may be filled from the unsealed body heat-seal portion which is opened, and finally the unsealed body heat-seal portion may be heat-sealed. Such a method can be similarly applied to a standing pouch having a form as shown in FIG.

In FIG. 2, the tundling pouch 30 comprises
An opening 1 for pouring out the contents is provided at an upper corner portion, and the opening auxiliary means is constituted by a notch 6 provided at an upper heat seal portion, and is provided in the direction of the cutout line 11. The pouch is cut out to open the opening 1. In this case, the cut line 11 may be displayed by printing. When the opening 1 is located at the upper corner in this way, one of the locking portions provided on the pouch in order to form the valley-shaped pouring guide by folding the opened opening 1 right and left is formed. It is necessary to provide the upper part of the pouch at a corner opposite to the opening 1, and to provide the other at a corresponding position of the body heat seal part below the opening 1. Also,
When the locking portions (8a, 8b) have a lock structure including the insertion portion 8a and the receiving portion 8b, the locking portions (8a, 8b) need to be provided in the heat seal portion of the pouch because they are constituted by cut lines and cutout portions.

Accordingly, in the standing pouch 30 shown in FIG. 2, the body heat-seal portion on the left side in the figure is heat-sealed with a heat-seal pattern in which the position where the receiving portion 8b is provided is expanded, and the right-hand upper corner is formed. Regarding the heat seal portion, heat is applied using a heat seal pattern in which either the upper edge portion of the right body heat seal portion or the right edge portion of the upper heat seal portion is expanded so that the insertion portion 8a is provided. After the sealing, an insertion portion 8a or a receiving portion 8b is provided at each corresponding position. Also in this case, the shapes of the insertion portion 8a and the receiving portion 8b can be freely used as long as they have a lock function, and the positional relationship between the insertion portion 8a and the receiving portion 8b may be reversed.

In the standing pouch 40 shown in FIG. 3, the bottom, torso, and upper heat seal portions are formed by heat sealing in the same heat seal pattern as a normal standing pouch. As an opening auxiliary means provided on the upper portion of the pouch, a cutout portion 9 is provided in the vicinity of an upper heat seal portion in the upper central portion of the pouch, and a pull tab 10 for sealing the cutout portion 9 is provided thereon.
Is heat-sealed so that it can be peeled off by the heat seal portion 5. In addition, the locking portion for folding the opening formed by the cutout portion 9 right and left to form a valley-shaped pouring guide includes pouch edge portions on both left and right sides of the cutout portion 9. Each is provided with a pressure-sensitive adhesive layer 8c with a release film.

FIG. 4 is a perspective view showing the state of the standing pouch 20 of the type shown in FIG. 1 when the contents are poured out. The half cut line 7 starting from the notch 6 shown in FIG.
By cutting off the upper part of the pouch along, the non-seal projection 3 is cut in the lateral direction, and the opening 1 is opened. next,
The opening 1 is folded right and left in two, and the insertion portions 8a of the engaging portions (8a, 8b) provided on both side edges of the pouch are received in the receiving portions 8b.
, The side edges of the pouch are locked, and a valley-shaped pouring guide is formed in the opening 1. Therefore, by holding the body of the standing pouch 50 (FIG. 4) in this state with one hand and tilting it as shown in the figure, the contents can be safely and smoothly poured out to the end through the valley-like pouring guide. You can do it.

FIG. 5 is a perspective view showing the state of the standing pouch 30 of the type shown in FIG. 2 when the contents are poured out. The pouch extends from the notch 6 shown in FIG. The opening 1 is opened by cutting off the upper corner. Next, the opening 1 is folded right and left into two, and the insertion portion 8a provided at the upper corner of the pouch on the opposite side of the opening 1 is provided on the left body heat seal portion below the opening 1. By being inserted into the receiving portion 8b, both are locked, and a valley-shaped pouring guide is formed in the opening 1. Therefore, by holding the body of the standing pouch 60 (FIG. 5) in this state with one hand and tilting it as shown in the figure, the contents can be safely and smoothly poured through the valley-like pouring guide to the end. Can be.

[Test Example 1] A base film having a thickness of 15
A 130 μm-thick L·LDPE film as a sealant layer is bonded to the ON film of a μm ON film by a dry lamination method using a polyester / isocyanate-based two-component curable adhesive to form a laminated film for a standing pouch ( (Commonly used for the trunk and the bottom). Using the laminated film, a standing pouch having the configuration shown in FIG. 1 was prepared. The dimensions of each part were set as follows, and a standing pouch of Test Example 1 was prepared.

The outer dimensions of the pouch are 135 mm in width and 250 mm in length, and the length of the folded portion of the bottom material film is 35 mm.
mm, and the bottom heat seal pattern has a downwardly curved portion (the height of the curved portion is 30 mm) at the top, similar to a normal standing pouch, and a 5 mm long seal from the bottom of the curved portion to the lower end of the pouch. Part, and
The width of the body heat seal portion was 5 mm. The heat-sealing pattern for heat-sealing the upper part has a length of 30 mm on both sides and the same size as the pouch, and a width of 20 mm and a length of 12 mm at a position 5 mm from the center of the pouch.
The pouch was heat-sealed in a shape having a rectangular non-seal convex portion having a width of 30 mm from the lower ends on both sides of the convex portion toward the position 30 mm from the upper end on the left and right ends of the pouch.
Further, auxiliary means for opening (notch and half cut line) having the shape shown in FIG.
And a locking portion (insertion portion and receiving portion). The half cut line was provided by mechanical means. In actual bag making, the bottom heat seal portion, one of the right and left body heat seal portions, and the upper heat seal portion are heat-sealed first, and the upper heat seal portion is provided with the heat seal portion. An opening assisting means and a locking portion were provided, and the other body heat-sealed portion was left unsealed, and a bag was formed by a method of forming an opening for filling contents.

Next, after filling 500 ml of a kitchen liquid detergent through the opening of the standing pouch which was not sealed, the opening was sealed by heat sealing.
Was prepared. (The number of packages is 10)

Test Example 2 In Test Example 2, a standing pouch having the structure shown in FIG. 2 was manufactured. The same laminated film as in Test Example 1 was used as a material for forming the pouch. The outer dimensions and the formation of the bottom were processed in the same manner as in Test Example 1. The right and left body heat seal patterns were formed with rectangular bulges having a width of 25 mm and a length of 15 mm at the upper end of the right body heat seal. The lower part is heat-sealed with a heat-seal pattern in a shape that can heat-seal the right edge of the pouch with a seal width of 5 mm to the bottom. In the left body heat-seal part, the upper end line of the pouch is the left end line of the pouch. When the upper right corner is folded obliquely in the lower left direction so that the bulge provided at the upper end of the right body heat seal portion overlaps, It is a 25 mm, a bulge rectangular width 14 mm, was heat sealed by a heat seal pattern of the heat seal can form a left edge portion of each of the upper and lower pouch width 5 mm. In the bulging portion of the right body heat seal portion, an insertion portion is provided as a locking portion, and in the bulge portion of the left body heat seal portion,
A receiving portion was provided as a locking portion.

As an opening auxiliary means for forming an opening for use at the left end corner of the upper part of the pouch, a cut line for cutting the corner part obliquely downward and leftward from above is printed on the pouch, An apparatus was prepared so that a V-shaped notch was provided at a predetermined position at the upper end of the pouch serving as the starting point after filling and sealing the content, and a standing pouch of Test Example 2 was produced.

The standing pouch prepared as described above was filled with 500 ml of kitchen liquid detergent from the upper opening, and the opening was heat-sealed with a seal width of 5 mm, and V was placed at a predetermined position in the upper heat-sealing portion. The standing pouch package of Test Example 2 was provided with a letter-shaped notch. (The number of packages is 10)

Test Example 3 In Test Example 3, a standing pouch having the structure shown in FIG. 3 was manufactured. The same laminated film as in Test Example 1 was used as a material for forming the pouch. The bottom and the bottom were also formed in the same dimensions as in Test Example 1. In addition, one of the wall films before and after the pouch had a vertically long elliptical shape as an opening auxiliary means in the vicinity of the upper heat seal portion at the upper center. (Short diameter 12m
m, a long diameter of 15 mm), and a 20 mm wide, 32 mm long pull tab is provided thereon to cover the cutout.
Heat seal part width 20 mm, length 24 mm, unsealed knob part width 20 mm, length 8 mm, using a film sealed by heat seal, this is the body heat seal part on the left and right sides of the pouch Was heat-sealed with a seal width of 5 mm to produce a standing pouch having an upper opening.

For the pull tab, a single-sided corona-discharge treated PET film having a thickness of 25 μm was used as a base film, and the heat-sealing agent for a nylon film was dried on the corona-discharge treated surface to a thickness of 6 μm. Applied to
A dried and laminated film was used. In addition, in order to provide an adhesive layer with a release film, a double-sided pressure-sensitive adhesive tape with a release film having a width of 6 mm was used to provide an adhesive layer with a release film on the locking portions provided on the left and right pouch edges of the opening. Length 1
The pouch was cut into 5 mm and attached to both side edges of the pouch to produce a standing pouch of Test Example 3.

From the opening at the top of the standing pouch prepared as described above, 500 ml of a kitchen liquid detergent was filled, and the opening was heat-sealed with a seal width of 5 mm to prepare a standing pouch package of Test Example 3. . (The number of packages is 10)

Each of the standing pouch packages of Test Example 1, Test Example 2, and Test Example 3 prepared as described above did not hinder independence even after storage for 3 months, and leakage of the contents was observed. Did not. In addition, when the standing pouch package of each test example was manually opened using the opening auxiliary means, a predetermined opening could be opened without any problem. Furthermore, each opening is folded right and left into two parts, and a locking part provided on the edge of the pouch is used to fix both side edges, so that a valley-like pouring guide is formed in the opening. Was formed, the contents could be safely and smoothly transferred to the other container through the pouring guide by simply holding the body of the pouch with one hand and tilting the pouch.

[0052]

As is apparent from the above description, according to the present invention, there is no need to attach a separate spout made of a molded article or the like, and the contents can be easily filled from the top of the wide pouch. Can be filled and sealed, and at the time of use, by utilizing the opening auxiliary means provided on the upper part of the pouch, it is possible to easily open a part of the upper part of the pouch,
Furthermore, the opening is folded right and left, and the locking portions provided at the edges of the pouch on both the left and right sides of the opening are fixed at the both edges, so that a valley-like pouring is performed at the opening. The guide is formed so that the contents can be safely and smoothly poured to the end through the valley-shaped pouring guide simply by holding and tilting the body of the pouch. It is effective in providing an excellent standing pouch with high productivity.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of an embodiment of a standing pouch according to the present invention, and is a view showing a state after contents are filled and sealed.

FIG. 2 is a front view showing the configuration of another embodiment of the standing pouch of the present invention, showing the form after the contents are filled and sealed.

FIG. 3 is a front view showing a configuration of still another embodiment of the standing pouch of the present invention, showing a form after the contents are filled and sealed.

FIG. 4 is a perspective view showing a state when the standing pouch of the type shown in FIG. 1 is used (when contents are discharged).

FIG. 5 is a perspective view showing a state when the standing pouch of the type shown in FIG. 2 is used (when contents are discharged).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening part 2 Heat seal pattern (upper part) 3 Non-seal convex part 4 Heat seal part (for pouch) 5 Heat seal part (for pull tab) 6 Notch 7 Half cut line 8a Lock part (insertion part) 8b Lock part (Receiving part) 8c Locking part (adhesive layer with release film) 9 Cutout part (for opening) 10 Pull tab 11 Cutout line 20, 30, 40, 50, 60 Standing pouch

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hidehiko Masaki 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd.

Claims (5)

[Claims] 1. An opening auxiliary means for providing an opening in a part of the upper part of the pouch is provided on the periphery of the upper part of the pouch, and a valley formed by folding the opening into two parts is fixed as a guide for pouring. A standing pouch, characterized in that locking portions are formed on the left and right side edges of the pouch for forming the opening. 2. The method according to claim 1, wherein the opening assisting means includes a heat seal pattern for forming a non-sealable convex portion in the pouch in an upper area of the pouch, and a notch or notch for cutting out the non-sealable convex portion. 2. The standing pouch according to claim 1, wherein the standing pouch is constituted by one or a combination of a notch or notch and a half-cut line. 3. The opening assisting means comprises any one of a cutout portion, a half-cut line portion, and a perforated line portion forming an opening, and a pull tab sealed to cover the cutout. The standing pouch according to claim 1, wherein 4. The standing device according to claim 1, wherein the locking portion has a lock structure formed by an insertion portion and a receiving portion provided in a heat seal portion at an edge of the pouch. Pouch. 5. The method according to claim 1, wherein the locking portion is formed of a pressure-sensitive adhesive layer with a release film or release paper provided on the edge of the pouch in a spot shape, or a double-sided pressure-sensitive adhesive layer. The standing pouch according to claim 1.