JPH11310248A - Self-supporting packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-supporting packaging bag easy to manufacture at low cost, and designed so that the upper part of a body is hardly bent in a self-supported state. SOLUTION: This self-supporting packaging bag comprises a bag-shaped body 2 and a pouring port 3 provided at the upper portion of the body. The body is formed in such a manner that side wall forming sheets are opposingly disposed so that their thermally adhesive resin layers face the inside of the body, while a bottom wall forming sheet 6 is folded so that its thermally adhesive resin layer faces the outside of a bottom and the folded portion is disposed between the side wall forming sheets so that its folded portion faces the inside of the body, thus effecting the thermal adhesion of these opposed circumferential portions. The pouring port is formed by superposing pouring port forming pieces formed to the side wall forming sheets on each other and effecting the thermal adhesion of these circumferential portions. In this self-supporting packaging bag thus formed, the side wall forming sheets have a shape retention ability and, when the pouring port forming pieces are axially crest-folded, the pouring port is formed into a three-dimentional shape, so that a fluid object in the body is designed so as to be pourable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-contained packaging bag (stand pack) applied to a packaging bag for a refillable liquid detergent or the like.

[0002]

2. Description of the Related Art FIG. 8 is a front view of a conventional packaging bag 101 of this kind, FIG. 9 is a sectional view taken along line DD of FIG. 8, and FIG.
FIG. 11 is a perspective view showing a use state of the packaging bag 101. As shown in FIGS.
1 is a bag-shaped body 102 in which a fluid L is accommodated.
And a cylindrical spout 1 provided at an upper portion of the body 102 so as to protrude outward and communicated with the inside of the body 102.
03, and the body 102 includes a pair of front and rear side wall forming sheets 104, 1 and 2 having a heat-adhesive resin layer on one side.
05 are arranged so that the heat-adhesive resin layer is on the inside,
Sheet 106 for forming bottom wall having a heat-adhesive resin layer on one side
Is folded between the side wall forming sheets 104 and 105 such that the thermally adhesive resin layer is on the outside and the bent portion is on the inside.
4 and 105 and the peripheral portion of the bottom wall forming sheet 106 facing each other are formed by heat bonding.

[0003] The spout 103 is provided with the side wall forming sheet 10.
It is formed by superimposing spout forming pieces 104a, 105a (see FIG. 10) formed on the upper portions of the upper portions 4 and 105 so as to project outward, and thermally bonding the peripheral portions thereof. , Fluid is spout 1
Spout 1 so that it can pass through 03 smoothly
Since it is necessary to keep 03 in a three-dimensional state, a cylindrical shape retaining member 107 made of synthetic resin is sandwiched between the spout forming pieces 104a and 105a.

The side wall forming sheets 104 and 105 are made of OP
P (stretched polypropylene), ONY (stretched nylon),
It is formed of a flexible sheet in which a heat adhesive resin layer is laminated on one side of a sheet made of PET (polyethylene terephthalate) or the like. Note that, in the drawing, a portion where a grid line is provided represents a heat bonding portion.

[0005] As shown in FIG. 11, the packaging bag 101 is displayed in a state where the bottom wall forming sheet 106 is flattened and self-standing at a store front. When the user who purchased the packaging bag 101 takes out the fluid inside, the tip of the spout 103 is cut and opened with scissors or the like, and the body 102 is held with one hand to hold the tip of the spout 103. Insert into the inlet of the container. Then, the body 102 is pressed with one hand to push out the fluid contained therein into the container.

[0006]

In the conventional self-standing packaging bag 101 described above, the shape retaining member 107 is connected to the spout forming piece 10.
4a and 105a, it takes a lot of time and effort to manufacture, and a mold for molding the shape-retaining member 107 is required, which increases the cost.

[0007] When displayed at a store, the body 1
Since there is no fluid at the upper part of the body 102, the upper part of the body 102 is easily bent, and the product name or design printed on the front of the body 102 becomes invisible, so that the product name cannot be confirmed or looks good. However, there was a problem that it became worse.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to make it easy and inexpensive to manufacture, and to make the upper part of a trunk hard to bend in an independent state. It is another object of the present invention to provide a self-contained packaging bag.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a first aspect of the present invention is to provide a bag-shaped body in which a fluid is accommodated, and an outwardly extending upper part of the body. A cylindrical spout that is provided so as to protrude and communicates with the inside of the body, wherein the body includes a pair of front and rear side wall forming sheets having a heat adhesive resin layer on one surface. The bottom wall forming sheet having a thermo-adhesive resin layer on at least one side is folded so that the thermo-adhesive resin layer is on the outside and the folded portion is on the inside so that the folded portion is on the inside. The pair of side wall forming sheets are disposed between the pair of side wall forming sheets, and the peripheral portions of the pair of side wall forming sheets and the bottom wall forming sheet facing each other are thermally bonded to each other. Outward on top of forming sheet In the self-supporting fluid packaging bag formed by overlapping the spout forming pieces formed so as to protrude with each other and thermally bonding the peripheral portions thereof, one of the side wall forming sheets is shaped. When the spout forming piece of the one side wall forming sheet is axially folded in the axial direction in a state where the tip of the spout is open, the spout becomes three-dimensional and a fluid can be poured out. It is characterized by having become.

According to a second aspect of the present invention, in the self-supporting packaging bag of the first aspect, the one side wall forming sheet is heat-adhesive to one surface of a base sheet made of paperboard or a rigid synthetic resin sheet. The resin layer is characterized by being laminated.

According to a third aspect of the present invention, in the self-standing packaging bag according to the first or second aspect, a crease extending in the axial direction of the spout is formed on the spout forming piece of the one side wall forming sheet. Is provided.

According to a fourth aspect of the present invention, in the self-standing packaging bag of the first to third aspects, the one side wall forming sheet is provided with a crease extending vertically. It is.

According to a fifth aspect of the present invention, in the self-standing packaging bag of the first to fourth aspects, one of the pair of side wall forming sheets and the bottom wall forming sheet are formed by a series of sheets. It is characterized by having done.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a self-supporting packaging bag 1 according to an embodiment of the present invention, and FIG.
3 is a developed view of the side wall forming sheet 4 and the bottom wall forming sheet 6 as viewed from the outer side, FIG. 4 is a developed view of the side wall forming sheet 5 as viewed from the outer side, and FIG. FIG. 6 is a perspective view showing a use state of the bag 1, FIG. 6 is a sectional view taken along line BB of FIG. 5, and FIG.
FIG. 6 is a sectional view taken along line CC of FIG. 5.

This packaging bag 1 is for replenishing a bottle containing a liquid detergent for washing dishes and the like with the liquid detergent, and as shown in FIGS. It comprises a bag-shaped body 2 accommodated therein, and a cylindrical spout 3 provided on one shoulder of the body 2 so as to protrude obliquely upward and communicating with the inside of the body 2. I have. The body 2 and the spout 3 are formed by thermally bonding a pair of front and rear side wall forming sheets 4 and 5 having a heat-adhesive resin layer on one side and a bottom wall forming sheet 6 having a heat-adhesive resin layer on one side. Is formed. Note that, in the drawing, a portion where a grid line is provided represents a heat bonding portion.

As shown in FIG. 3, the front side wall forming sheet 4 and the bottom wall forming sheet 6 are formed by a series of sheets. This sheet is formed by laminating a heat-adhesive resin layer on one surface of a synthetic resin film made of OPP (stretched polypropylene), ONY (stretched nylon), PET (polyethylene terephthalate) or the like. As the heat-adhesive resin, CPP (unstretched polypropylene), PE “LDPE or LLDPE” (polyethylene “low-density polyethylene or linear low-density polyethylene”) and the like are used. Further, a barrier layer made of aluminum foil, aluminum vapor deposition, silica vapor deposition or the like may be laminated between the synthetic resin film and the heat-adhesive resin layer.

The side wall forming sheet 4 has a spout forming piece 4a formed on the left shoulder so as to project diagonally upward.
have. Further, on the surface (outer surface) of the side wall forming sheet 4 opposite to the heat-adhesive resin layer, decorative printing such as a trade name and a design is applied. And the sheet 6 for bottom wall formation
On both sides of the bottom wall forming sheet 6 so as to be symmetrical with respect to a folding line 6a provided at the center in the vertical direction of the bottom wall forming sheet 6.
A pair of notches 6b, 6b are provided.

The side wall forming sheet 5 on the back side is 100 to
It is formed from a sheet of paperboard of about 200 g / m ² coated on one side with a polyethylene resin. FIG.
As shown in FIG. 5, the side wall forming sheet 5 has a spout forming piece 5 formed on the right shoulder so as to protrude obliquely upward.
The spout forming piece 5a is provided with a crease 7 extending in the axial direction. Also, the side wall forming sheet 5
Is provided with a pair of creases 8 and 9 extending vertically from the lower end to the substantially central portion in the vertical direction. On the surface (outer surface) of the side wall forming sheet 5 opposite to the heat-adhesive resin layer, decorative printing such as a method of use and a design is applied.

The side wall forming sheet 4, the bottom wall forming sheet 6, and the side wall forming sheet 5 are arranged such that the bottom of the side wall forming sheet 5 and the side wall forming sheet 4 are formed with the heat-adhesive resin layer inside. Are arranged so as to coincide with the boundary line 10 of the use sheet 6. And the sheet 6 for bottom wall formation is the boundary line 10
Is folded inward along the fold line 6a
(See FIG. 2). And
The side wall forming sheets 4 and 5 and the bottom wall forming sheet 6 are formed into a bag shape by heat-bonding the peripheral portions of the side wall forming sheets 4 and 5 except for the upper end sides, and after the inside is filled with a liquid detergent, The upper ends of the side wall forming sheets 4 and 5 are thermally bonded to each other, so that the liquid detergent is sealed.

Since the bottom wall forming sheet 6 has a heat-adhesive resin layer only on one side, the bottom wall forming sheet 6
Although the surfaces that become inside when folded in are not adhered to each other, cutouts 6 a,
Since the side walls 6a are provided, both side ends of the lower ends of the side wall forming sheets 4, 5 are bonded to each other via the notches 6a, 6a. Note that a hole may be provided instead of the notch 6a.

When the packaging bag 1 constructed as described above is displayed at a store, the bottom wall forming sheet 6 is made flat, and the side wall forming sheet 5 is piled up along the creases 8 and 9. Fold it up and display it on a display shelf in a state of being independent. When the user who has purchased the packaging bag 1 pours out the liquid detergent L inside, the tip of the spout 3 is cut with scissors or the like to open the spout 3, and the spout forming piece 5 a is cut along the crease 7. Make a mountain fold. Since the spout forming piece 5a has a shape-retaining property, the spout 3 is maintained in a bent state, and as shown in FIG. 7, the spout 3 has a three-dimensional shape with a triangular cross section. Then, holding the body 2 with one hand, the tip of the spout 3 is inserted into the inlet of the bottle, and the body 2 is pressed with one hand to push out the liquid detergent L contained therein into the bottle.

It should be noted that the present invention is not limited to the above embodiment, and various changes can be made without departing from the gist of the present invention.

For example, the sheet 4 for forming the side wall and the sheet 6 for forming the bottom wall may be formed separately. In this case, the sheet 6 for forming the bottom wall is formed instead of the cutout 6a and the hole. 6 may be provided with a heat-adhesive resin layer on both surfaces. In this case, the bottom wall forming sheet 6
In order to prevent parts other than both side ends on the inner surface when folded from being bonded to each other, heat bonding is performed with a jig inserted inside the bent bottom wall forming sheet 6.

Alternatively, the side wall forming sheet 4 and the bottom wall forming sheet 6 may be separately provided, and the side wall forming sheet 5 and the bottom wall forming sheet 6 may be formed by a series of sheets. In this case, first, a flexible sheet on which no paperboard is laminated is punched into the shape of the side wall forming sheet 5 and the bottom wall forming sheet 6, and thereafter, the paperboard is laminated only on the side wall forming sheet 5.

Further, the number of folds provided on the side wall forming sheet 5 to make the body 2 self-standing may be one or three or more. Moreover, you may make it provide in an inverted V-shape.

The base sheet of the side wall forming sheet 5 may be formed of a rigid synthetic resin sheet.
It may be a single layer or a plurality of layers.
Further, a barrier layer made of aluminum foil, aluminum vapor deposition, silica vapor deposition, or the like may be provided between the base sheet and the heat-adhesive resin layer.

[0027]

As described above, in the self-standing packaging bag of the present invention, one of the side wall forming sheets has a shape retaining property,
When the spout forming pieces of the side wall forming sheet are mountain-folded along the axial direction, the spouts become three-dimensional so that the fluid can be poured out, so that a separate shape retaining between the spout forming pieces is performed. Since there is no need to sandwich the member, the production is not troublesome. In addition, it can be manufactured with a general stand-pack manufacturing device without the need for a special device, and does not require a mold for molding a shape-retaining member, thereby reducing equipment costs and mold costs. And can be manufactured at low cost. Furthermore, since one of the side wall forming sheets has a shape retaining property, the upper part of the body portion is not easily bent in a self-standing state, and the product name is not easily seen or the appearance is not deteriorated.

According to the third aspect of the present invention, the spout forming piece of the side wall forming sheet having shape retaining properties is provided with a crease extending in the axial direction of the spout, thereby forming the spout forming piece. Is easy to bend, so that the handleability is improved.

In the case of the self-supporting packaging bag according to the fourth aspect, the side wall forming sheet having a shape retaining property is provided with a crease extending in the vertical direction, so that the side wall forming sheet can be easily bent in the vertical direction. This makes it easier to hold the packaging bag and makes it less slippery when pouring,
Handleability is improved.

[Brief description of the drawings]

FIG. 1 is a front view of a self-supporting packaging bag 1 according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a side wall forming sheet 4 and a bottom wall forming sheet 6;
FIG.

FIG. 4 is a developed view of the side wall forming sheet 5 viewed from the outer surface side.

FIG. 5 is a perspective view showing a use state of the packaging bag 1.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a sectional view taken along line CC of FIG. 5;

FIG. 8 is a front view of a conventional packaging bag 101.

FIG. 9 is a sectional view taken along line DD of FIG. 8;

FIG. 10 is a sectional view taken along line EE of FIG. 8;

FIG. 11 is a perspective view showing a use state of the packaging bag 101.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 self-supporting packaging bag 2 trunk 3 spout 4 side wall forming sheet 4 a spout forming piece 5 side wall forming sheet 5 a spout forming piece 6 bottom wall forming sheet

Claims (5)

[Claims] 1. A bag-shaped body in which a fluid is accommodated, and a cylindrical spout provided at an upper portion of the body so as to protrude outward and communicated with the inside of the body. Wherein the body has a pair of front and rear side wall forming sheets having a heat-adhesive resin layer on one side facing each other such that the heat-adhesive resin layer is on the inside, and a heat-adhesive resin layer on at least one side. Is folded so that the heat-adhesive resin layer is on the outside, and is disposed between the pair of side wall forming sheets so that the bent portion is on the inside. The sheet and the bottom wall forming sheet are formed by thermally bonding opposing peripheral portions, and the spout is formed so as to protrude outward at an upper portion of each of the side wall forming sheets. Spout forming pieces overlap each other In addition, in a self-supporting packaging bag formed by thermally bonding these peripheral portions, one of the side wall forming sheets has a shape retaining property, and the tip of the spout is open. The self-supporting packaging bag, wherein when the spout forming piece of the one side wall forming sheet is mountain-folded in the axial direction, the spout becomes three-dimensional so that a fluid can be poured out. 2. The method according to claim 1, wherein the one side wall forming sheet is formed by laminating a heat-adhesive resin layer on one surface of a base sheet made of paperboard or a rigid synthetic resin sheet. A self-contained packaging bag as described. 3. The self-supporting package according to claim 1, wherein a spout forming piece of the one side wall forming sheet is provided with a crease extending in an axial direction of the spout. bag. 4. The self-supporting packaging bag according to claim 1, wherein the one side wall forming sheet is provided with a crease extending vertically. 5. The sheet according to claim 1, wherein one of the pair of side wall forming sheets and the bottom wall forming sheet are formed by a series of sheets. Freestanding packaging bag.