JPH10167355A - Packaged body and production method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it difficult for an opening piece to be separated from a packaging material and to eliminate the necessity to match position for joining the opening piece during use. SOLUTION: This package bag is so made that a packaging material Fa and a packaging material Fb are laminated by an adhesive layer 6 at it width measurement A part. An opening part 8 is formed in the inner packaging material Fb of the laminated part, and an opening flap 9 detachable by a cutting C is formed in the outer packaging material Fa. Because the opening flap 9 is integral with the packaging material Fa, the material cost for this package bag is less than that using a separate cover material. In addition, because the packaged body uses 2 packaging material sheets Fa and Fb laminated, the same can be formed in an ordinal packaging process, and the production is easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package for removably storing contents, such as a wet tissue or a dry tissue, and more particularly, to a conventional package which does not require a separately provided lid for opening. Also, the present invention relates to a package capable of opening and closing an opening for taking out contents, and a method of manufacturing the package.

[0002]

2. Description of the Related Art FIGS. 6A and 6B are perspective views showing a conventional package for storing a wet tissue in which a sheet-like fiber material is impregnated with a chemical or the like. FIG. (B) shows a state where the lid member is opened. The packaging material forming the package 1 is, for example, a laminate material in which a PET (polyethylene terephthalate) film, an aluminum foil, and a sealant layer are laminated in this order from the front side, and is a bottom surface side of the package 1 shown in FIG. In addition to being vertically sealed, horizontal sealing portions 1b and 1b are formed at both front and rear ends to form a substantially cubic soft sealing body. The wet tissue 3 is housed in the sealing body in an upright manner.

[0003] On the top surface of the package 1, an oval opening 1 is formed.
A perforation or the like is formed in the packaging material so that a is formed, and the lid material 2 having an adhesive layer is adhesively bonded thereon. The cover member 2 is made of a relatively rigid sheet material in which a surface layer such as a polypropylene-based resin or a polyethylene-based resin is laminated on both surfaces of a base material layer such as a polypropylene, and further a printing layer and a top coat layer are provided. An adhesive layer is formed on a portion facing the package body. When the lid material 2 is peeled off, the packaging material is cut at the perforated portion to form the opening 1a. After opening and once taking out the wet tissue 3 from the opening 1a, when the opening 1a is again covered with the lid 2, the lid 2
Adhesive layer adheres to the package around the opening 1a,
The opening 1a is closed. Opening 1 with lid 2 when not in use
By sealing a, the drying of the wet tissue 3 in the package 1 can be prevented.

[0006] In the package 1 shown in FIG. 6, a portion closer to the base than the notches 2 c, 2 c of the lid member 2 is a fixed end 2 a, and a portion sandwiched between the notches 2 c, 2 c is a hinge portion. It is working. Then, an adhesive layer is formed on the entire back surface of the lid member 2 and is adhesively bonded to the surface of the package 1. In this package 1, the knob 2 b at the tip of the lid 2 is gripped by hand, the lid 2 is peeled off, and the notch 2
When peeled off to the hinge portion sandwiched between c and 2c, FIG.
As shown in (B), the opening 1a of the lid 2 is opened while the fixed end 2a is fixed to the surface of the package 1. After the wet tissue 3 is taken out from the opening 1a, the lid 2 is dropped on the upper surface of the package 1 as it is, and the lid 2 is adhered around the opening 1a. As described above, when the lid 2 is adhered again, the lid 2 is adhered to the surface of the package 1 in a state where the lid 2 is returned to the original position, so that it is necessary to align the lid 2 with the opening 1a. And the lid 2 is always adhered to a predetermined position of the package 1.

[0005]

However, if the lid member 2 is formed of a sheet material different from the packaging material of the packaging body 1 as in the prior art, at the time before the packaging body 1 is formed, A step for adhesively bonding the lid material 2 to the packaging material is required. In this step, a step of supplying the lid material 2 one by one and a step of positioning the lid material 2 one by one at a portion to be the opening 1a of the packaging material and performing adhesive bonding are required. Work equipment that automatically performs the process is complicated.

[0006] The lid material 2 conventionally used has a surface layer made of a polypropylene-based resin or a polyethylene-based resin laminated on both sides of a base material layer made of, for example, polypropylene, and further provided with a printing layer and a top coat layer. Since it is formed of a relatively expensive sheet material, the material cost is increased by the provision of the lid material 2. Further, in the package 1, when the user grips the knob 2 b of the cover member 2 from the state of FIG. 6A and peels the package 2 away from the package 1, the peeling is caused by the notches 2 c and 2 c. The fixed end 2a does not always stop, and may be peeled off from the surface of the package 1 when the lid 2 is pulled vigorously, or the lid 2 may be closed by a hinge surrounded by the notches 2c and 2c. The material 2 may be cut. If the lid 2 is separated from the package 1, it is necessary to align the lid 2 with the opening 1a and join it again, which is inconvenient in use.

The present invention has been made to solve the above-mentioned conventional problems, and it is not necessary to prepare a lid material separately from the packaging material, the material cost can be reduced, and the lid material is positioned and joined to the packaging material. It is an object of the present invention to provide a package and a method of manufacturing the package, which can simplify the manufacturing process by eliminating the need for the package.

[0008] It is another object of the present invention to provide a package having a structure in which the opening piece is difficult to be separated from the packaging material, so that it is not necessary to align and join the opening pieces during use, and to provide a method of manufacturing this packaging body. And

[0009]

In the package of the present invention, a bag for storing contents is formed by a packaging material, and the bag has a bonding portion in which the packaging materials are overlapped and adhesively bonded. An opening for taking out the contents is formed in the packaging material inside the bonding portion, and an opening piece that covers the opening and opens and closes the opening is formed in the packaging material outside the bonding portion. It is characterized by having.

In the above, as shown in FIG.
The packaging material on the outer side of the bonded portion is provided with a cut portion that can separate the portion serving as the opening piece from another portion, and has a structure in which the opening piece is peeled off so as to be separated from the other portion. Is possible. Or, FIG. 2 (B)
As shown in (2), a portion to be an opening piece may be formed in a convex shape in advance on the packaging material outside the bonding portion.

The edge of the packaging material inside the bonding portion is welded and joined to the packaging material outside the bonding portion,
It is preferable that the unsealing piece formed on the packaging material outside the bonding portion can be opened to the welded and joined portion.

The welded joint is a portion indicated by reference numeral Sa in FIG. 4, and the outer wrapping material is partially folded so as to wrap (pinch) the edge of the inner wrapping material. This is a portion where the inner surface of the edge of the inner packaging material and the inner surface of the folded portion of the outer packaging material opposed thereto are welded and joined by heat welding or the like. With this structure, when the opening piece is peeled off to the boundary of the bonded portion, that is, the welded junction between the edge of the inner packaging material and the outer packaging material, the edge of the inner packaging material is removed. It can be prevented that the outer packaging material is peeled off from the part and a gap is formed between both packaging materials.

Further, the packaging material inside the bonding portion includes
A separation line surrounding a predetermined area is formed, a portion surrounded by the separation line is adhesively bonded to an outer packaging material, and a portion surrounded by the separation line is an inner packaging material when the opening piece is peeled off. And the opening may be formed in the separated portion. In this structure, when the opening is again covered with the peeled-off opening piece, a part of the packaging material adhered to the opening piece and separated from the inner packaging material covers the opening, and the adhesive layer is Touching the contents from the part can be prevented.

Alternatively, an opening for taking out the contents is formed in the inner packaging material in advance, and the adhesive layer is not formed on the inner surface of the outer packaging material at a portion facing the opening. It is also possible. In the example shown in the figure, the opening is open in an elliptical shape, but the opening may be in the form of a slit cut straight into the inner packaging material.

Further, according to the method for manufacturing a package of the present invention, the inner packaging material having a portion serving as an opening from which the contents are taken out is provided.
A step of stacking the outer packaging material having a part to be opened and forming a bonded portion by adhesively bonding both packaging materials,

[0016] After or before storing the contents in the connected packaging material in which the bonding portion is formed, the edge of the inner packaging material and the outer packaging material opposite to the bonding portion. A step of forming a vertical seal portion by welding and joining together to form a cylindrical body,

Dividing the cylindrical body by a length corresponding to the amount of the contents, and fusing and joining the packaging materials in a direction orthogonal to the vertical seal section to form a horizontal seal section. It is characterized by having.

Further, in the above, it is possible to include a step of welding and joining the edge of the inner packaging material and the outer packaging material at the bonding portion before or after forming the cylindrical body. is there.

The contents stored in the package of the present invention are wet tissue or dry tissue paper.

In this package, a lid for closing the opening is not separately provided as in the conventional case, but an opening piece for closing the opening is formed in a part of the packaging material. Therefore, as before,
There is no need to provide the packaging material separately from the lid material, so that the cost of material for forming the package can be reduced, and an operation step of aligning and joining the lid material to the packaging material becomes unnecessary.

The opening piece is formed integrally with the packaging material outside the bonding portion of the packaging material.
It is possible that the adhesive layer is not provided partially between the tip of the opening piece and the inner packaging material, and the tip of the opening piece can be used as a margin or a knob.

In the case where a cutout for separating the unsealing pieces is formed in the outer packaging material of the bonding portion, the cutout is provided only at the edge of the outer packaging material. The cut may be used as a trigger to separate the opening piece from the outer packaging material, or the cut line for separating the part to be the opening piece may be formed as a continuous line in the direction crossing the bonded portion. Or, it may be formed intermittently so as to form perforations or perforations.

In the manufacturing process, two long packaging materials are used, and a separation line such as a perforation or perforation for separating the opening is formed in one of the packaging materials, or the opening is formed in advance. In the other packaging material, the cuts for separating the opened pieces are formed in advance. Next, the two packaging materials are aligned so that the opening piece overlaps the opening portion, and an adhesive layer is formed on one of the packaging materials (preferably, the outer packaging material). Join the materials.

The contents are wrapped with the joined packaging material and vertically sealed to form a cylindrical body. Alternatively, the contents are stored in a vertically sealed cylindrical body. Then, the cylindrical body is divided according to the amount of the contents, and is horizontally sealed and separated into individual packages.

In this method of manufacturing a package, the process proceeds to a conventional packaging process as it is by using the bonded body of the packaging materials bonded at the bonding portion, and the vertical seal portion and the horizontal seal portion are formed. The packaging can be completed and the packaging process is simple. In particular, since there is no need to position and join the lid material as in the conventional case, the process is simplified.

In the package and the method of manufacturing the package described above, the edge of the packaging material bonded at the bonding portion opposite to the bonding portion is welded to the vertical seal portion. To form a cylindrical body. However, in the present invention, one packaging material is formed in a cylindrical shape, and the edges of the packaging material are bonded to each other with a predetermined width via an adhesive layer, and an opening is formed in the packaging material inside the bonded portion. Alternatively, an opening piece may be formed on the outer packaging material, and only the horizontal seal portion may be formed.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the package of the present invention. FIG. 1A shows a state in which an opening piece 9 which is a part of a packaging material Fa constituting the package H covers an opening 8. B)
FIG. 2 is a perspective view showing a state where the opening piece 9 is opened.
(A) (B) is a perspective view showing another embodiment of the package,
FIG. 3 is a perspective view illustrating a bonding portion of the packaging material, FIG. 4 is a cross-sectional view of the package shown in FIG. 1A, and FIG. 5 is an enlarged cross-sectional view of the packaging material.

As shown in FIG. 3, the packaging material F of the packaging body H of the present invention is formed by laminating two packaging materials Fa and Fb. As shown in FIG. 5, each of the packaging materials Fa and Fb has a polyethylene terephthalate (PET) layer f1 serving as an outer layer and an aluminum foil f serving as a core layer from the surface.
2, and the biaxially oriented polypropylene (OP
P) and a heat seal layer f3 called a sealant, and these layers are each formed of a laminated film (laminated sheet) laminated and bonded by dry lamination or the like. Alternatively, volume PE in which aluminum, silica, or alumina layer is deposited on PET
T may be one in which a heat seal layer is laminated. In order to improve the heat sealing strength,
What bonded two layers of P and polyethylene (PE) may be used as the heat seal layer f3.

The aluminum foil f2 does not transmit water or oxygen and is excellent in airtightness. Therefore, when the cosmetic or the wet tissue 3 impregnated with the medicine is put in the package, the aluminum foil f2 is not permeable to water or oxygen. Drying can be prevented. On the surface of the aluminum foil f2, a mark of a product, characters for handling explanation, and the like are printed, and the PET layer f1 also has a function as a protective layer for protecting the printing.

As shown in FIG. 3, the packaging material Fa and the packaging material Fb
Are superimposed on each other at a portion having a width A, and the portion having the width A is a bonding portion. Further, an adhesive layer 6 is formed over the width dimension B on the back surface (inner surface) of the packaging material Fa overlaid on the upper side, that is, on the surface of the heat sealing layer f3, and further, AB on the edge of the packaging material Fa. The portion 7 where the adhesive layer is not formed by the dimension is included. In the bonded portion having the width A, the polyethylene terephthalate layer f1 serving as the outer layer of the packaging material Fb and the heat seal layer f3 serving as the inner layer of the packaging material Fa are adhesively bonded to face each other.

A plurality of wet tissues 3 are formed by the packaging material F in which the packaging material Fa and the packaging material Fb are bonded together.
Is folded and the stacked contents are wrapped. As shown in FIG. 4, the edges 4 a and 5 a of the packaging materials Fa and Fb on the opposite side to the bonding portion are fitted together with the heat seal layer f <b> 3 as the inner layer facing each other, pressed and pressed. The vertical seal portion S1 is formed by heat welding. In the package H, the bonding portion is the upper surface, and the vertical sealing portion S
1 is directed to the bottom side. The packaging material F in which the vertical seal portion S1 is formed to form a cylindrical body has two ends in the longitudinal direction of the cylindrical body, that is, both ends 4b of the packaging material Fa, depending on the amount of the contents.
4b and both end portions 5b and 5b of the packaging material Fb are pressed and heat-welded with the heat seal layers f3 facing each other to form a horizontal seal portion S2.

As shown in FIG. 4, the sectional shape of the package H is substantially rectangular (rectangular). At each corner of the rectangular shape, the packaging material F is folded by a short dimension w, and The short sealing portions Sa, Sb, Sc, and Sd are formed by heat welding. In the short-width seal portions Sb and Sd, since the heat seal layers f3, which are the inner layers of the packaging material Fb, face each other, heat is applied by pressing and heating the packaging materials Fb in the short dimension w. It can be welded and joined. Similarly, also in the short width seal portion Sc, the heat sealing layers f3 of the packaging material Fa face each other, so that the packaging materials Fa are pressurized and heated at the portion of the short dimension w to perform heat welding bonding. Can be.

However, in the short width seal portion Sa, the outer packaging material Fa is folded so as to wrap (pinch) the edge 5c of the inner packaging material Fb at the bonding portion. The heat seal layer f3 of the edge 5c and the heat seal layer f3 of the short width portion 4c of the packaging material Fa facing the heat seal are sealed by heat welding. As shown in FIG. 4, the lower surface of the edge 5c is heat welded. It becomes a seal part (i). However, the upper surface of the edge 5c of the packaging material Fb and the facing portion (ii) of the packaging material Fa are not heat-welded, and this portion is adhesively joined by the adhesive layer 6.

As shown in FIG. 1 (B), an opening 8 for taking out contents such as a wet tissue 3 is formed in the inner packaging material Fb in the bonding portion having the width dimension A. Is formed. As shown in FIG. 3, a separating line P surrounding a predetermined area is formed in the packaging material Fb.
The separation line P is a perforation in which perforations or linear cuts are formed at a constant pitch, or holes are formed at a constant pitch, and a region surrounded by the separation line P is a separation piece 5d. As shown in FIG. 1B, when the separation piece 5d is separated from the part of the separation line P, the opening 8 opens in the packaging material Fb.

In the bonding portion, an unsealing piece 9 to be overlapped with the portion where the opening 8 is formed is integrally formed on the outer packaging material Fa. This opening piece 9
Is cut by the cuts C formed on both sides thereof, so that the packaging material Fa
Can be separated from other parts. In the example shown in FIG. 1, the cut C is perforated or perforated, but the cut C may be a continuous line. Alternatively, a short cut or a short perforation is formed at the edge of the packaging material Fa, and the opening piece 9 is pointed by an arrow α.
When pulled in the direction, triggered by a short cut,
You may comprise so that a cutting line may extend to the packaging material Fa.

As described above, the packaging material Fa is applied at the bonding portion.
Since the adhesive layer 6 is formed on the inner surface of the
It is adhered to the region of the packaging material Fb where the opening 8 is formed. Further, as described above, in the bonding portion, a portion 7 where the adhesive layer having a constant width is not formed on the edge side of the packaging material Fa.
Is provided. Therefore, the portion corresponding to the portion 7 of the opening piece 9 is not adhered to the packaging material Fb.
Is the knob 9a of the opening piece 9.

Next, a method of manufacturing the package H will be described. First, as shown in FIG. 3, two vertically long packaging materials Fa and Fb on which a PET layer f1, an aluminum foil f2, and a heat sealing layer f3 are laminated are used.
Separate pieces 5d are added to the packaging material Fb inside the
Is formed in advance, and a cut C for separating the unsealing piece 9 is formed in the packaging material Fa outside the bonding portion.

The adhesive layer 6 is formed on the inner surface of the packaging material Fa (the surface of the heat seal layer f3) in the region of the width B. The adhesive layer 6 is formed by applying an adhesive to the inner surface of the packaging material Fa. The wrapping materials Fa and Fb are overlapped with each other at a portion having a width dimension A, and are adhered to each other by the adhesive layer 6. At this time, both the packaging materials Fa and Fb are so arranged that the opening piece 9 surrounded by the cut C of the packaging material Fa overlaps with the separation piece 5d.
Are aligned and adhesively bonded. In addition, short width seal portions Sa, Sb, Sc, and Sd shown in FIG. 4 are formed on the packaging material F in which the packaging material Fa and the packaging material Fb are adhered to each other. This step is performed by partially folding and heat-sealing the packaging material F.

Next, the contents such as the wet tissue 3 are wrapped with the wrapping material F, and the edge 4a of the wrapping material Fa and the wrapping material F
The edge portion 5a of FIG. 2b is joined to the palm and joined by heat welding to form the vertical seal portion S1, and the packaging material F is formed into a cylindrical body. Further, the packaging material F is pressurized and thermally welded in a direction orthogonal to the vertical seal portion S1 in accordance with the amount of the contents, thereby forming a horizontal seal portion S2. Then, the packaging material F is cut at the horizontal seal portion S2, and separated into individual packages.

In the package H thus manufactured,
Since the opening piece 9 is a part of the packaging material Fa constituting the package H, the material cost can be reduced as compared with a conventional case in which a lid material is prepared separately from the packaging material F. Also, the packaging materials Fa and F
Since the contents can be packaged as it is using the packaging material F to which the “b” is pasted and the conventional packaging equipment, the packaging process is also easy.

When the package H is used for the first time, when the knob 9a without the adhesive layer 6 at the tip of the opening piece 9 is peeled off with the finger in the direction of the arrow α, the package C is wrapped at the cut C. The material Fa is cut, and the opening piece 9 is cut off from the other part of the packaging material Fa. At this time, since the separation piece 5d on the packaging material Fb side is adhered to the opening piece 9, the separation piece 5d
Is separated from the packaging material Fb while being adhered to the back surface of the packaging material Fb. As a result, the opening 8 is formed in the packaging material Fb.

The contents such as the wet tissue 3 are sequentially taken out from the opening 8. After the take-out is completed, when the opening piece 9 is turned down to the packaging material Fb side, the opening piece 9 is adhered to the packaging material Fb by the adhesive layer 6, the package H is sealed, and the contents can be prevented from drying. . When the opening 8 is closed again by the opening piece 9, the separation piece 5d adhered to the opening piece 9 is located in the opening 8, so that the opening 8 is covered by the separation piece 5d, and the wet tissue The contents such as 3 do not adhere to the adhesive layer 6 of the opening piece 9.

In the package H, the opening piece 9 can be repeatedly peeled off. Further, the opening piece 9 can be peeled off by pulling to the position of the short width seal portion Sa shown in FIG. However, since the opening piece 9 is a part of the packaging material Fa, the opening piece 9 is not completely separated from the package H, unlike the lid material 2 of the conventional example shown in FIG. In the short width seal portion Sa, the edge 5c of the packaging material Fb and the short width portion 4c of the packaging material Fa are heat-welded at the heat-sealing seal portion (i). When the film is peeled off for a long time, the peeling is reliably stopped by the heat-sealing seal portion (i). Further, since both the packaging materials Fa and Fb are welded and joined at the heat-sealing seal portion (i), a gap is formed in the packaging material at the base end portion of the opening piece 9 when the opening piece 9 is largely peeled off. Can be prevented. When a highly rigid reinforcing material such as a PET film is adhered to the periphery of the opening 8 of the packaging material Fb constituting the package H, and the packaging material Fb is partially thickened around the opening 8. In the periphery of the opening 8, the packaging material Fb is less likely to wrinkle or bend, and
Can be reliably adhered to the periphery of the opening 8, and the tightness of the opening 8 can be improved.

Next, another embodiment shown in FIGS. 2A and 2B will be described. In FIG. 2A, short cuts Ca are formed from the cuts C on both sides of the unsealing piece 9 in a direction perpendicular to the cuts C. This package H
Then, after peeling off the opening piece 9 as shown in FIG. 1 (B), the opening piece 9 can be cut from the portion of the cut Ca. Therefore, when this package H is used for refilling in a container, it can be put in a container in a state where the opening piece 9 is cut and removed. In the case where the package H is used as it is without being put in a container, the opening piece 9 is not cut at the cut Ca, and FIG.
As shown in (B), a usage method in which the peeling of the opening piece 9 is repeatedly performed is possible.

Next, as shown in FIG. 2B, the cutout C is not formed in the packaging material Fa outside the bonding portion, and the packaging material Fa is cut into a convex shape in advance, and this convex shape is cut. The part is an opening piece 9. In FIG. 2 (B), there is no need to cut the opening piece 9 by the cut C, and the opening 8 can be exposed by peeling the opening piece 9 from the knob 9a as it is. In the case shown in FIG.
As shown in (1), the problem that the cut edge (iii) of the packaging material Fa after the opening piece 9 is cut off does not occur, and the appearance during use is hardly impaired.

[0046]

As described above, in the present invention, since an opening piece for closing the opening is formed by a part of the lid material, it is necessary to separately provide a lid material for closing the opening as in the prior art. Not
Material cost can be reduced. In the manufacturing process, a complicated operation for positioning and joining the lid material to the packaging material is not required.

Further, when the opening piece is pulled, the opening piece does not separate from the package, which is convenient in use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a package according to the present invention, wherein (A) shows a state in which an opening is covered by an opening piece that is a part of a packaging material, and (B) shows an opening piece opened. Indicating that the opening is exposed,

FIGS. 2A and 2B are perspective views showing another embodiment of the package of the present invention;

FIG. 3 is a perspective view showing a bonded portion of two packaging materials;

FIG. 4 is a cross-sectional view of the package of the present invention;

FIG. 5 is an enlarged sectional view of a packaging material;

6A and 6B are perspective views of a conventional package, wherein FIG. 6A shows a state in which an opening is covered by a lid, and FIG. 6B shows a state in which the lid is opened and an opening is opened.

[Explanation of symbols]

 H Wrapping material F Wrapping material Fa Outer wrapping material Fb Inner wrapping material A Width of bonded part C Cut P Separation line S1 Vertical seal part S2 Horizontal seal part Sa, Sb, Sc, Sd Short width seal part 3 Wet tissue 5d Separation piece 8 Opening 9 Opening piece

Claims (6)

[Claims] 1. A bag body for storing contents is formed by a packaging material, and the bag body is provided with a bonding portion in which the packaging materials are overlapped and adhesively bonded to each other, and a package inside the bonding portion is provided. A package, wherein an opening for taking out the contents is formed in the material, and an opening piece that covers the opening and is capable of opening and closing the opening is formed in a packaging material outside the bonding portion. 2. The package according to claim 1, wherein a cutout portion is formed in the packaging material outside the bonded portion so that the portion serving as the opening piece can be separated from other portions. 3. An edge of the packaging material inside the bonding portion is welded and joined to a packaging material outside the bonding portion, and the unsealing piece formed on the packaging material outside the bonding portion is the same as the above. The package according to claim 1 or 2, wherein the package can be opened up to the welded portion. 4. A separating line surrounding a predetermined area is formed on the inner packaging material of the bonding portion, and a portion surrounded by the separating line is adhesively bonded to the outer packaging material, and the opening piece is peeled off. The package according to any one of claims 1 to 3, wherein a portion surrounded by the separation line is separated from the inner packaging material when the opening is formed, and the opening is formed in the separated portion. 5. An outer packaging material having a part to be an opening piece is superimposed on an inner packaging material having a part to be an opening for taking out the contents, and the two packaging materials are adhesively bonded to form a bonded part. After or before storing the content in the connected packaging material in which the bonding portion is formed and connected, the edge of the inner packaging material and the outer packaging material on the opposite side to the bonding portion. Forming a vertical seal portion by welding and joining together to form a cylindrical body; dividing the cylindrical body by a length corresponding to the amount of contents, and wrapping in a direction orthogonal to the vertical seal portion. And fusing and joining the materials to form a horizontal seal portion. 6. The method of manufacturing a package according to claim 5, further comprising a step of welding and joining an edge of the inner packaging material and an outer packaging material at the bonding portion before or after forming the cylindrical body. Method.