JPH11255247A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package comprising a laminate in which a barrier layer having moisture permeability and a thermo-adhesive resin layer are sequentially laminated on one side of a paper layer, and which is compact, has good portability, and is easy to handle. Excellent,
Provide products that can be manufactured at low cost. SOLUTION: A laminated body 2 in which a barrier layer 5 having moisture impermeability and a thermo-adhesive resin layer 6 are sequentially laminated on one side of a paper layer 3 is heat-sealed so that the thermo-adhesive resin layer 6 becomes an inner surface. A pillow-shaped packaging bag, comprising edge seal portions 7, 8 provided along both upper and lower edges, and a back seal portion intersecting these edge seal portions 7, 8 and formed by bonding together. 9 and a cutting line 10 extending in the lateral direction, which is provided in the vicinity of the inside of the upper edge seal portion 7 over the entire circumference or almost the entire circumference.
And a fold line 11 provided on the front side wall 1a so as to extend in the vertical direction so as to face the back seal portion 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag which can be used by pouring water or the like therein.

[0002]

2. Description of the Related Art A powdery material such as powdered juice is sealed in a folding type packaging container formed by laminating a synthetic resin film layer on one side of a paper layer, and the packaging container is opened when used. A package which is made three-dimensional and which is filled with water or the like to take an enclosed substance is known (ex. JP-B-63-1909). This type of package can be carried around and carried, can take powdery materials even in places without cups, and is excellent in disposability. Therefore, it is particularly useful when going out or traveling.

In addition, instead of the above-mentioned foldable packaging container, one or two rectangular laminates in which a barrier layer having moisture permeability and a heat-adhesive resin layer are sequentially laminated on one side of a paper layer are used. A package using a packaging bag that is heat-sealed along the sides or four sides and provided with a cutting line along the inside of the upper edge sealing portion is also conceivable. In this package, the packaging bag is opened along the upper edge, and both side edges of the packaging bag are pressed inward with fingers to open the upper edge.

[0004]

However, in the case of the former foldable packaging container, there is a problem that the cost is high. That is, since the latter packaging bag can be manufactured by a continuous method in which the processing of the bag is continuously performed while feeding the web-like laminate in one direction, it can be manufactured efficiently and at low cost. Since the folding type packaging container requires shape retention when it is made three-dimensional, the paper layer of the laminate, which is a material, is thick, and it is very difficult to wind the laminate in a roll shape. In some cases, it cannot be manufactured by the above-described continuous method, but must be manufactured by a sheet-by-sheet method in which a synthetic resin layer is bonded to a paper layer punched in the shape of a container. Therefore, the manufacturing efficiency was poor and expensive.

Further, in the case of the latter packaging bag, since it can be made more flexible than the former packaging container, although the portability is better than the former packaging container, a band-shaped heat seal portion is formed along the side edge. Since it is formed, there is a problem that the lateral dimension is large and bulky. This problem can be solved by attaching both sides of the laminated body to the envelope on the back side. In this case, since the thickness of the portion to be enveloped is large, both sides of the packaging bag are inserted with fingers. There is a problem that the side wall on the back side hardly bends outward when pressed toward the upper side, and the upper end of the bag is hard to open.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a laminate in which a barrier layer having moisture impermeability and a heat-adhesive resin layer are sequentially laminated on one side of a paper layer. It is an object of the present invention to provide a packaging bag comprising: a compact package having good portability, excellent handling properties, and being inexpensive to manufacture.

[0007]

In order to achieve the above-mentioned object, a packaging bag according to claim 1 has a laminated structure in which a barrier layer having moisture permeability and a heat-adhesive resin layer are sequentially laminated on one side of a paper layer. Is a pillow-shaped packaging bag heat-sealed so that the heat-adhesive resin layer is on the inner surface, the edge seal portion provided along the upper and lower edges, and these edge seal portions Intersecting, a back seal part formed by pasting together,
A cutting line extending in the horizontal direction provided over the entire periphery or substantially the entire periphery near the inside of the upper edge sealing portion, and a folding line provided on the front side wall so as to extend in the vertical direction in opposition to the back seal portion. It is characterized by having.

[0008] According to the above configuration, since the enclosure, water, and the like can be accommodated over the entire length in the lateral direction, the outer dimensions can be reduced. In addition, since the back seal portion is formed by attaching the gasket, the back side wall is not thickened at the back seal portion as in the case of envelope attachment. Is easily deformed,
In addition, since the back side wall and the front side wall are bent at the base end of the back seal portion and at a fold line, respectively, the upper end of the packaging bag is easily opened. Further, the bag can be continuously processed by a general pillow-shaped bag manufacturing apparatus.

The packaging bag according to a second aspect of the present invention is the packaging bag according to the first aspect, wherein the cutting line is formed by a perforated line cut in the paper layer.

The packaging bag according to a third aspect of the present invention is the packaging bag according to the second aspect, wherein the perforated line is provided so that a cut portion thereof crosses a base end of the back seal portion. Things.

In this case, when the upper edge is cut off, the back seal portion is cut smoothly.

According to a fourth aspect of the present invention, there is provided the packaging bag according to the first to third aspects, wherein the base end of the back seal portion and the folding line are located at the center in the lateral direction of the packaging bag. It is characterized by the following.

In this case, when both side edges of the packaging bag are pressed with fingers, the front side wall and the rear side wall are easily bent.

According to a fifth aspect of the present invention, in the packaging bag of the first to fourth aspects, the folding line is provided from the cutting line to the vicinity of the center of the front side wall in the vertical direction. It is.

In this case, since the length of the folding line is almost the minimum necessary, the manufacturing efficiency is good.

According to a sixth aspect of the present invention, in the packaging bag of the first to fifth aspects, the folding line is provided so as not to intersect the cutting line.

In this case, it is possible to prevent the front side wall from breaking along the fold line at the time of opening.

According to a seventh aspect of the present invention, there is provided the packaging bag according to any one of the first to sixth aspects, wherein the tearing direction coincides with the lateral direction of the packaging bag between the barrier layer and the paper layer. It is characterized in that a uniaxially stretched film layer is provided.

In this case, the upper edge of the packaging bag is easily cut in the tearing direction.

The packaging bag according to claim 8 is the packaging bag according to claims 1 to 7, wherein the paper layer weighs 30 to 80 g.
/ M ² of thin paper.

In this case, the packaging bag is flexible and does not stretch even if it is put in a breast pocket or the like.

A ninth aspect of the present invention is the packaging bag according to the first to eighth aspects, wherein the back seal portion is adhered to the rear side wall in a state where the back seal portion is laid down to one side. It is.

In this case, the back seal does not interfere with packing or carrying.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The packaging bag 1 shown in FIGS. 1 and 2 is a pillow-shaped package in which a powdery analgesic / antipyretic agent to be taken by dissolving in water is enclosed.
It has an outer dimension of 65 mm in width and is formed by a laminate 2 as shown in FIG. This laminate 2 has a weighing weight of 64
g / m ² of art paper paper 3 is printed on one side and then perforated, and then on the other side of the paper layer 3 is a barrier layer 5 made of aluminum foil having a thickness of 19 μm. It is formed by extruding and coating a 30 μm thick polyethylene resin 6 on the opposite side of the barrier layer 5 from the paper layer 3 while bonding with an adhesive layer 4 formed by extrusion lamination of a 15 μm thick polyethylene resin. Have been. The laminate 2 is formed in a long web shape and supplied to a manufacturing site in a state of being wound in a roll shape, and is mounted on a general pillow-shaped packaging bag manufacturing apparatus to manufacture the packaging bag 1. Note that a uniaxially stretched polyolefin film layer may be provided between the adhesive layer 4 and the barrier layer 5. Further, in the present embodiment, the barrier layer 5 is laminated on the paper layer 3 by a polyethylene resin, but the barrier layer 5 may be laminated on the paper layer 3 by a dry lamination method using a urethane adhesive or the like. .

The packaging bag 1 is formed by forming the laminated body 2 so that the polyethylene resin layer 6 is on the inner surface, and the edge sealing portions 7, 8 having a width of 7.5 mm provided along both upper and lower edges.
And a width 7.5 m orthogonal to these edge seal portions 7 and 8.
m and a cutting line 10 formed by a perforated line extending in the lateral direction and engraved on the paper layer 3 near the inside of the upper edge sealing portion 7 over substantially the entire circumference.

The back seal portion 9 is formed by sticking together with a palm, and the base end portion 9a is located at the center of the packaging bag 1 in the lateral direction. The back seal portion 9 is in a state of falling down to the left in FIG.
Except for the cutting line 10 and its vicinity, the rear side wall 1b
Is spot bonded.

The cutting line 10 is provided so that the length of the cut portion 10a is 5 mm and the length of the non-cut portion 10b is 1 mm, and the cut portion 10a crosses the base end 9a of the back seal portion 9. It is provided to be. The ratio of the length of the cut portion 10a to the length of the non-cut portion 10b is preferably in the range of 3: 1 to 7: 1,
In particular, the case of 5: 1 is preferable.

The paper layer 3 on the front side wall 1a has a cutting line 10
A fold line 11 formed of a perforated line extending in the vertical direction is formed so as to face the back seal portion 9 from the front side wall 1a to the central portion in the vertical direction. The folding line 11 is formed such that its upper end does not intersect with the cut portion 10 a of the cutting line 10.

An arrow 12 indicating the tearing direction is printed on one end of the upper end edge of both sides of the packaging bag 1, and a display portion 1 on which a component, a use method, an effect, and the like of the medicine are described is provided on a rear side wall 1b.
3 is printed. In addition, an instruction line 14 serving as an index for pouring water is printed parallel to the cutting line 10 at a position about 8 mm inside the cutting line 10 on the front side wall 1a. The rear side wall 1b has been reached.

Next, a method of using the packaging bag 1 will be described with reference to FIG. As shown in FIG. 4A, when the user holds the upper edge of the packaging bag 1 with a finger and applies a force in the tearing direction, the upper edge is cut along the cutting line 10 as shown in FIG. Cut off. Next, when both side edges of the packaging bag 1 are pressed inward with a finger, as shown in FIG. 4C, the front side wall 1a is a fold line 11, and the rear side wall 1b is a base end of the back seal portion 9. 9a is bent in a chevron along each of the packaging bags 1
Is open at the top. Then, water is poured into the inside of the packaging bag 1 to the position of the indication line 14, and the medicine is dissolved in water and taken.

In the present embodiment, the case where the content is a powdery or granular drug has been described. However, the content may be any water-soluble powdery substance that can be dissolved by putting water or hot water in a packaging bag. It may be something.

[0032]

According to the present invention, the packaging bag of the present invention is capable of accommodating the enclosing material, water and the like over the entire length in the lateral direction, and therefore has a small outer size and is excellent in portability. In addition, since the back seal portion is formed by attaching the palm, the back side wall is not thickened at the back seal portion as in the case of envelope attachment. Is easily deformed,
In addition, since the back side wall and the front side wall are bent at the base end of the back seal portion and at a fold line, respectively, the upper end of the packaging bag is easily opened. Therefore, the handleability is excellent. Moreover, since the processing of the bag and the filling of the contents can be continuously performed by a general pillow-shaped bag manufacturing apparatus, the bag can be manufactured at low cost.

In the packaging bag according to the third aspect, the perforation line is provided so that the cut portion crosses the base end portion of the back seal portion, so that the back seal portion is smooth when the upper end edge is cut off. It is easy to open because it is cut into pieces.

According to the fourth aspect of the present invention, the back seal portion and the folding line are located at the center in the lateral direction of the packaging bag, so that when the both side edges of the packaging bag are pressed with fingers, the front side wall and the rear side wall are formed. Is easily bent, so that the upper end of the packaging bag is easily opened.

In the packaging bag according to the fifth aspect, since the length of the folding line is almost the minimum necessary, the manufacturing efficiency is high and the manufacturing cost can be reduced.

In the packaging bag according to the sixth aspect, since the folding line is provided so as not to cross the cutting line, it is possible to prevent the front side wall from being broken along the folding line at the time of opening.

According to a seventh aspect of the present invention, there is provided a packaging bag having a uniaxially stretched film disposed between the barrier layer and the paper layer such that the tearing direction is aligned with the lateral direction of the packaging bag. Since the upper edge is easily cut in the tearing direction, the opening property is good.

In the packaging bag according to the eighth aspect, the paper layer is weighed 3 times.
By making the thin paper of 0 to 80 g / m ² , the packaging bag is flexible and does not stretch even if it is put in a breast pocket or the like, so that portability is further improved.

In the packaging bag according to the ninth aspect of the present invention, the back seal portion is spot-bonded to the rear side wall in a state where the back seal portion is laid down to one side, so that the back seal portion does not become an obstacle during packing or carrying, so that it is manufactured. Workability at the time is good, and portability is even better.

[Brief description of the drawings]

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

FIG. 2 is a rear view of the packaging bag of FIG. 1;

FIG. 3 is a sectional view of a laminate constituting the packaging bag of FIG. 1;

FIG. 4 is an explanatory view showing a method of using the packaging bag of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Laminated body 3 Paper layer 5 Aluminum foil (barrier layer) 6 Polyethylene resin layer (thermal adhesive resin layer) 7 Upper edge seal part 8 Lower edge seal part 9 Back seal part 10 Cutting line 11 Folding line

Claims (9)

[Claims] 1. A pillow-shaped laminate obtained by heat-sealing a laminate in which a barrier layer having moisture permeability and a heat-adhesive resin layer are sequentially laminated on one side of a paper layer so that the heat-adhesive resin layer is on the inner surface. An edge seal portion provided along both upper and lower edges, a back seal portion intersecting with these edge seal portions and formed by attaching a palm, and an inner side of the upper edge seal portion. It has a cutting line extending in the horizontal direction provided in the vicinity of the entire circumference or substantially the entire circumference, and a folding line provided in the front side wall so as to extend in the vertical direction in opposition to the back seal portion. Packaging bag. 2. The packaging bag according to claim 1, wherein the cutting line comprises a perforated line cut in the paper layer. 3. The packaging bag according to claim 2, wherein the perforated line is provided so that a cut portion thereof crosses a base end of the back seal portion. 4. The packaging according to claim 1, wherein the base end of the back seal and the folding line are located at the center in the lateral direction of the packaging bag. bag. 5. The packaging bag according to claim 1, wherein the folding line is provided from the cutting line to a vicinity of a center in a vertical direction of the front side wall. 6. The packaging bag according to claim 1, wherein the folding line is provided so as not to intersect the cutting line. 7. A uniaxially stretched film layer is provided between the barrier layer and the paper layer such that the tearing direction coincides with the lateral direction of the packaging bag.
The packaging bag according to any one of claims 6 to 6. 8. The packaging bag according to claim 1, wherein the paper layer is made of thin paper having a basis weight of 30 to 80 g / m ² . 9. The packaging bag according to claim 1, wherein the back seal portion is spot-bonded to the rear side wall in a state where the back seal portion is laid down to one side.