JP2000095250A - Packaging bag and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make less bulky, to improve outer appearance and to simplify production process by providing a butt seam part. SOLUTION: This relates to a packaging bag which is made able to store an article to be stored in the inside of a bag main body 1 made by adhering the inner face sides of both end parts of a flatly folded tube body. The bag main body 1 of the tube body is provided with a base material 2 formed in a tube shape from a sheet body and a tape body 3 provided in an axial direction of the tube body 1 for connecting one side edge of the base material 2 with another side edge.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag capable of accommodating articles such as foodstuffs and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, as a packaging bag capable of accommodating objects such as foodstuffs, a packaging bag composed of a substantially rectangular sheet body is known. Such a packaging bag is shown in FIG. In addition, a sheet body having at least one side heat-sealable is formed on the cylindrical body 1 'with the heat-sealable side facing inward, and the side edges 5', 5 'are attached to each other with a palm and then flattened. It is folded and the inner surfaces of both ends 6 ', 6' are heat-welded to form a hermetically sealed shape.

[0003]

However, in the above-mentioned conventional packaging bag, the thickness of the packaging bag becomes thick and bulky at the abutting portion where both side edges 5 'and 5' of the sheet member are attached to each other, so that the distribution process is difficult. For example, there is a problem that the work is complicated and the appearance is not good.

[0004] Further, the steps of attaching the both sides 5 ', 5' of the sheet body to each other and thermally welding the both ends 6 ', 6' of the tubular body 1 'are not always simple.

[0005] In view of the above problems, the present invention is not bulky,
An object of the present invention is to provide a packaging bag which has a good appearance and is easy to manufacture, and a method for manufacturing the same.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In a packaging bag according to the present invention, the inner surfaces of both ends of a flat cylindrical member 1 are bonded together. In a packaging bag capable of storing an object to be accommodated inside a bag body formed as described above, the tubular body 1 includes a base material 2 formed in a tubular shape from a sheet body, and one side edge of the base material 2. And a tape body 3 provided in the axial direction of the tubular body 1 to connect side edges.

[0007] The packaging bag of the present invention has the above-described structure, and the both side edges of the base material 2 are connected via the tape body 3. There is no.

In particular, if both side edges of the base material 2 are bonded to both side portions of the tape body 3 as described in claim 2, the portion where the tape body 3 and the base material 2 overlap is formed on both sides. Only the edges.

Further, if one of the side portions of the tape body 3 is not adhered to a position on the inner surface side of the base member 2 and separated from the side end, the base member may be provided. One side edge of the packaging bag 2 is a free edge not bonded to the tape body 3, and the free edge is formed on the outer surface side of the packaging bag.

[0010] The method for producing a packaging bag according to the present invention comprises:
In a method of manufacturing a packaging bag capable of accommodating an object to be accommodated therein by bonding the inner surfaces of both ends of a cylindrical body 1 folded flat, a tubular base formed from a sheet body is provided. The one side edge and the other side edge of the material 2 are connected by a tape body 3 provided in the axial direction of the cylindrical body 1 to form the cylindrical body 1 to manufacture a packaging bag. .

The method for manufacturing a packaging bag according to the present invention comprises the above-described structure, and connects both side edges of the base material 2 with the tape body 3 therebetween. In addition, the cylindrical body 1 can be formed by supplying the tape body at the same time as making the base material 2 cylindrical.

In particular, if both sides of the base material 2 are adhered to both sides of the tape body 3, both sides of the base material 2 are adhered to both sides of the tape body 3. Thus, the cylindrical body can be formed.

Further, if any one side of the tape body 3 is adhered to a position on the inner surface side of the base material 2 and separated from the side end, the outer surface side of the packaging bag can be obtained. In addition, a free edge that is not bonded to the tape body 3 can be easily formed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the packaging bag of the present embodiment has both ends 6, 6 of a tubular body 1 folded flat.
6 are configured so that an object to be accommodated can be accommodated inside a bag body formed by heat-welding the inner surfaces of the bag 6.

The cylindrical body 1 has a sheet body such as a synthetic resin laminated film having a heat-sealable surface on one side, and the heat-sealable surface is defined as an inner surface, and both side edges 5a, 5a are not joined. A base member 2 formed in a cylindrical shape in a state where the base members 5 and 5 are separated from each other, and a tape member 3 provided in an axial direction of the cylindrical member 1 to connect one side edge and the other side edge of the base member 2. Consists of

The tape body 3 is a strip-shaped synthetic resin laminated film having a length substantially the same as the length of the sheet body in the longitudinal direction (axial direction of the cylindrical body 1), and both sides have heat welding properties. Outside (the side opposite to the surface that comes into contact with the object)
Are heat-welded to the inner surfaces of the side edges 5 and 5 of the base material 2 in a band with a desired width.

Next, a method of manufacturing a packaging bag having the above structure will be described. The sheet member is formed into a cylindrical shape with both side edges 5, 5 separated from each other to form a base material 2, and the inner surface of the base material 2 is formed. The tape body 3 is interposed between both side edges 5 and 5 on both sides, and both side portions 7 and 7 of the tape body 3 and both side edges 5 and 5 of the base material 2 are provided.
Is thermally welded to form the cylindrical body 1.

In the step of forming the tubular body 1, the work of supplying the tape body 4 while forming the base material 2 by bending the sheet body into a tubular shape and performing heat welding to each other are performed in a flow operation.
It can be done easily and smoothly.

Thereafter, the cylindrical body 1 is folded flat, and both ends 6, 6 which are open ends are closed by heat welding to form a packaging bag having an accommodation chamber capable of accommodating contents therein. To manufacture.

In the packaging bag of the present embodiment, since the joining portions of the side edges 5 and 5 of the base material 2 are not bulky and the inner and outer surfaces have little unevenness, it can be smoothly put in and taken out without damaging the object. Good appearance.

The overlapping portion between the base material 2 and the tape body 3 is formed on both side edges 5 and 5 of the base material 2 and both side portions 7 and 7 of the tape body 3.
Since only the space is used, it is possible to form a packaging bag having a large accommodation room by efficiently using the materials to be used. As a result, the manufacturing cost is low.

The packaging bag of the present invention is not limited to the above embodiment. For example, as shown in FIGS. 3 and 4, one side of the tape body 3 is the inner side of the base material 2. Side end 5a
The base material 2 is adhered to a position away from the base material 2.
If one side edge becomes the free edge portion 9 having the thickness of one base material 2, it is easy to open the packaging bag from the free edge portion 9. In particular,
It is preferable to provide a notch 8, which is a V-shaped notch, at a desired position on the free edge 9 because the notch 8 can be more easily opened as a starting point of opening.

Further, in the above embodiment, the tape body 3 is bonded to the inner surface of the base material 2, but the tape body 3 may be bonded to the outer surface of the base material 2. In short, it is only necessary that the cylindrical body 1 be formed by bonding the side portions 7, 7 of the tape body 3 and the side edges 5, 5 of the base material 2 to each other. In the present embodiment, at least one side of the tape body 3 (the base material 2
It is only necessary that the heat-adhesive side is configured to be heat-weldable.

Further, in the above embodiment, both side edges 5 and 5a of the base material 2 are separated without being brought into contact with each other, but the two side edges 5a and 5a are in contact with each other. Also, the one in which both side edges 5 and 5 overlap is also the intended range of the present invention. In short, it is only necessary that one side edge and the other side edge of the base material 2 be connected by the tape body 3 provided in the axial direction of the tubular body 1. However, as in the above embodiment,
Both side edges 5, 5 of the base material 2 without overlapping
If a and 5a are separated from each other, the overlapping portion between the materials (the base materials 2 or the base material 2 and the tape body 3) can be reduced, so that it is not bulky, the production cost is not required, and the appearance is reduced. It becomes a good packaging bag.

As shown in FIGS. 5 and 6, a flat cylindrical body 1 having both sides formed in a gusset shape (portion indicated by B in the drawings) is also intended to be intended by the present invention. Range. According to the present embodiment, the object storage chamber can be formed large, so that the packaging bag can cope with a thick object or the like.

Further, one side of the sheet 4 and the tape 3
It is not an essential requirement of the present invention that at least one side of the sheet body 4 is heat-weldable. Lumber 2
And the base member 2 and the tape body 3 may be bonded via an adhesive. However, if the inner surfaces of the base material 2 or the base material 2 and the tape body 3 can be thermally welded as in the above embodiment, the manufacturing process is simple.

Further, the material of the sheet member 4 and the tape member 3 constituting the base material 2 is not limited to the above-mentioned synthetic resin laminated film, but may be paper or synthetic paper.

[0029]

As described above, since the packaging bag of the present invention does not have a portion attached to the palm, it is not bulky and has a good appearance and appearance.
Moreover, the manufacturing process is simple, and if the both side edges of the base material are bonded to both side portions of the tape body as described in claim 2, the bulk is not further increased.

If one of the side portions of the tape body is not adhered to the inner surface of the base material and is separated from the side end, the base member is formed on the outer surface side of the packaging bag. The free edge of the material protrudes, resulting in a packaging bag that is easy to open from the free edge.

Further, in the method for manufacturing a packaging bag according to the present invention, it is not necessary to attach both side edges of the base material to each other, and at the same time the base material is formed into a cylindrical shape and the tape is supplied to form the cylindrical shape. Since it can be formed, a bulky packaging bag can be manufactured by a simple manufacturing process. In particular, if both side edges of the base material are adhered to both sides of the tape body as described in claim 5, the packaging bag will be even less bulky. Can be easily manufactured.

Further, if one of the side portions of the tape body is adhered to a position on the inner surface side of the base material and separated from the side end, a packaging bag which can be easily opened is easily manufactured. can do.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention.

FIG. 2 is an end view taken along the line PP of FIG. 1;

FIG. 3 is a schematic perspective view showing another embodiment of the present invention.

FIG. 4 is an end view taken along line QQ of FIG. 3;

FIG. 5 is a schematic perspective view showing another embodiment of the present invention.

FIG. 6 is an end view taken along line RR of FIG. 5;

FIG. 7 is a partially cutaway perspective view showing an example of a conventional packaging bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cylindrical body 2 ... Base material 3 ... Tape body

[Procedure amendment]

[Submission date] August 25, 1999 (1999.8.2
5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] packaging Fukuro及 benefactor method of manufacturing

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag capable of accommodating articles such as foodstuffs and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, as a packaging bag capable of accommodating objects such as foodstuffs, a packaging bag composed of a substantially rectangular sheet body is known. Such a packaging bag is shown in FIG. In addition, a sheet body having at least one side heat-sealable is formed on the cylindrical body 1 'with the heat-sealable side facing inward, and the side edges 5', 5 'are attached to each other with a palm and then flattened. It is folded and the inner surfaces of both ends 6 ', 6' are heat-welded to form a hermetically sealed shape.

[0003]

However, in the above-mentioned conventional packaging bag, the thickness of the packaging bag becomes thick and bulky at the abutting portion where both side edges 5 'and 5' of the sheet member are attached to each other, so that the distribution process is difficult. For example, there is a problem that the work is complicated and the appearance is not good.

[0004] Further, the steps of attaching the both sides 5 ', 5' of the sheet body to each other and thermally welding the both ends 6 ', 6' of the tubular body 1 'are not always simple.

[0005] In view of the above problems, the present invention is not bulky,
An object of the present invention is to provide a packaging bag which has a good appearance and is easy to manufacture, and a method for manufacturing the same.

[0006]

Means for Solving the Problems The present invention has been made to solve the above problems, the packaging bag according to the present invention, the tubular folded into a flat shape tubular bag the body 1 from the sheet material One side edge and the other side edge of the base material 2 formed in
Adhering to both sides of the tape body 3 provided in the hand direction
In a packaging bag formed so that it can accommodate
And one side of the tape body 3 is the base material.
2 is characterized in that it is adhered to the inner surface side and at a position separated from the side end .

[0007] The packaging bag of the present invention has the above-described structure, and the both side edges of the base material 2 are connected via the tape body 3. There is no.

[0008] In particular, if it is pre-Symbol the side edges of the substrate 2 on both sides of the tape body 3 is adhered, the portion with the tape body 3 and the base 2 overlap each other is only both side edge portions of both .

Further, one side of the front Symbol tape body 3, if it is adhered to a inner surface side of the substrate 2 in a position separated from the side end, one side edge of the substrate 2 part becomes a free edge not bonded to said tape member 3, and the free-acquaintance portion is formed on the outer surface side of the packaging bag.

[0010] The method for producing a packaging bag according to the present invention comprises:
A cylindrical base material 2 is formed with both side edges of the sheet body separated from each other.
The sheet is then formed between both side edges on the inner surface side of the substrate 2.
A tape body 3 is interposed in the longitudinal direction of the body, and then the tape body 3
When bonding both side portions of the body 3 and both side edges on the inner surface side of the base material 2,
Either one side of the tape body 3 is attached to the inner surface of the base material 2.
Side and separated from the side edge.
By folding the material 2 into a flat shape, the object to be stored is
Characterized in that to produce a packaging bag closed containers capable tubular bag the body 1.

According to the method for manufacturing a packaging bag of the present invention, since both side edges of the base material 2 are connected via the tape body 3, both side edges of the base material 2 do not need to be bonded together. it is possible to form a tubular bag the body 1 by supplying simultaneously said tape member when the base member 2 in a cylindrical shape.

[0012] In particular, when bonding the opposite side edges of the substrate 2 on both sides of the front Symbol tape body 3, the tubular bag by simply adhering the side edges of the substrate 2 on both sides of the tape body 3 it is possible to form the present body 1.

Further, the pre-Symbol either side of the tape body 3, if adhered to a inner surface side of the substrate 2 in a position separated from the side end, the tape body 3 on the outer surface side of the packaging bag A free edge that is not adhered to the substrate can be easily formed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

The packaging bag of the present embodiment, as shown in FIGS. 1 and 2, contained object to the internal end portions 6, 6 of the tubular bag the body 1 is folded into a flat shape is heat-welded Can be accommodated.

[0016] The tubular bag the body 1, a sheet material such as synthetic resin laminated film one side has a heat weldability, and both side ends 5a of the surface of the heat-fusible as the inner surface side, without 5a is keep company a substrate 2 formed in a cylindrical shape in a state where both side edges 5, 5 are separated from each other, provided in the axial direction of the tubular bag the body 1 to connect the one side edge and the other side edge of the substrate 2 Tape body 3.

[0017] The tape body 3 is a belt-like synthetic resin laminate film having a longitudinal direction (axial direction of the tubular bag Body 1) length substantially the same length of the sheet, the double-sided thermal weldability Both sides 7, 7 on the outer surface side (opposite to the surface in contact with the object) are heat-welded to the inner surfaces of both side edges 5, 5 of the base material 2 in a desired width in a band shape. ing.

Next, a method of manufacturing a packaging bag having the above structure will be described. The sheet member is formed into a cylindrical shape with both side edges 5, 5 separated from each other to form a base material 2, and the inner surface of the base material 2 is formed. The tape body 3 is interposed between both side edges 5 and 5 on both sides, and both side portions 7 and 7 of the tape body 3 and both side edges 5 and 5 of the base material 2 are provided.
To form a tubular bag the body 1 is thermally welded.

[0019] The cylindrical bag Body 1 forming step is to flex the sheet to the cylindrical supply tape body 4 while forming the base material 2, the task of heat welding is performed in an assembly line with each other Therefore, it can be performed easily and smoothly.

[0020] Thereafter, the packaging having the tubular bag folding the body 1 into a flat shape, which can accommodate housing chamber contained goods inside the both end portions 6, 6 which is the open end and closed by thermal welding Manufacture bags.

In the packaging bag of the present embodiment, since the joining portions of the side edges 5 and 5 of the base material 2 are not bulky and the inner and outer surfaces have little unevenness, it can be smoothly put in and taken out without damaging the object. Good appearance.

The overlapping portion between the base material 2 and the tape body 3 is formed on both side edges 5 and 5 of the base material 2 and both side portions 7 and 7 of the tape body 3.
Since only the space is used, it is possible to form a packaging bag having a large accommodation room by efficiently using the materials to be used. As a result, the manufacturing cost is low.

As shown in FIGS. 3 and 4 , the packaging bag of the present invention is bonded to a position where one side of the tape body 3 is on the inner surface side of the base material 2 and is separated from the side end 5a. As a result, if one side edge of the base member 2 becomes the free edge portion 9 having the thickness of one base member 2, the packaging bag can be easily opened from the free edge portion 9. In particular, if a notch 8 such as a V-shaped notch is provided at a desired position of the free edge 9, the notch 8
Is preferred as the starting point of the opening of the package because it is easier to open the package.

Further, in the above embodiment, the tape body 3 becomes adhered to the inner surface of the base 2, the tape body 3 may be bonded to the outer surface side of the substrate 2. The point is if the tubular bag the body 1 is formed by the side portions 7, 7 and the side edges 5,5 of the base 2 of the tape body 3 is adhered. In the present embodiment, it is sufficient that at least one surface of the tape body 3 (adhesion side with the base material 2) is configured to be heat-weldable.

Further, in the above embodiment, both side edges 5 and 5a of the base material 2 are separated without being brought into contact with each other, but the two side edges 5a and 5a are in contact with each other. Also, the one in which both side edges 5 and 5 overlap is also the intended range of the present invention. In short, the tape body 3 in which one side edge and the other side edge of the base member 2 is provided in the axial direction of the tubular bag Body 1
It is not connected by the both sides 7,7. However, as in the above embodiment, if both side edges 5 and 5a of the base material 2 do not overlap with each other and the two side edges 5a and 5a are separated from each other, the material (the base material 2
Since it is possible to reduce the number of polymerization portions between each other or between the base material 2 and the tape body 3), the packaging bag is not bulky, does not require manufacturing cost, and has a good external appearance.

Further, as shown in FIGS. 5 and 6, but the present invention shall both sides of the flat which is formed in a tubular bag the body 1 is formed in a gusset (indicated by B in the drawing) Is the intended range. According to the present embodiment, the object storage chamber can be formed large, so that the packaging bag can cope with a thick object or the like.

Further, one side of the sheet 4 and the tape 3
The at least one side of a thermally fusible, not an essential requirement in the present invention, one side or the like of the sheet body 4 does not have the thermal adhesiveness, both end portions 6, 6 of the tubular bag Body 1 (The inner surfaces of the base material 2) and the base material 2 and the tape body 3 may be bonded together via an adhesive. However, if the inner surfaces of the base material 2 or the base material 2 and the tape body 3 can be thermally welded as in the above embodiment, the manufacturing process is simple.

Further, the material of the sheet member 4 and the tape member 3 constituting the base material 2 is not limited to the above-mentioned synthetic resin laminated film, but may be paper or synthetic paper.

[0029]

As described above, since the packaging bag of the present invention does not have a portion attached to the palm, it is not bulky and has a good appearance and appearance.
And the manufacturing process is simplified, particularly if it both side edges of the base on both sides of the tape member is bonded, not more bulky.

[0030] In addition, it is one of the side of the tape body,
If it is adhered to the inner side of the base material and at a position separated from the side edge, the free edge of the base material protrudes to the outer surface side of the packaging bag,
From the free edge, the packaging bag can be easily opened.

Furthermore, the manufacturing method of the packaging bag of the present invention
According, it is possible to have to stick twofold both side edges portions of the substrate without, and the substrate by supplying a tubular to simultaneously said tape member to form a tubular bag the body, simplified production can produce a packaging bag is not bulky in step, in particular, if adhered to both side edges of the base on both sides of the tape body can be easily produced a more bulky packaging bag.

[0032] In addition, any one side of the tape body,
If the adhesive is adhered to the inner surface of the base material at a position separated from the side end, a packaging bag that can be easily opened can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention.

FIG. 2 is an end view taken along the line PP of FIG. 1;

FIG. 3 is a schematic perspective view showing another embodiment of the present invention.

FIG. 4 is an end view taken along line QQ of FIG. 3;

FIG. 5 is a schematic perspective view showing another embodiment of the present invention.

FIG. 6 is an end view taken along line RR of FIG. 5;

FIG. 7 is a partially cutaway perspective view showing an example of a conventional packaging bag.

[Description of Reference Numerals] 1 ... tubular bag Body 2 ... substrate 3 ... tape body

Claims (6)

[Claims] 1. A packaging bag capable of storing an object to be accommodated in a bag body in which inner surfaces of both ends of a tubular body (1) folded flat are adhered to each other. )
A base material (2) formed in a tubular shape from a sheet body, and a tape body (1) provided in the axial direction of the tubular body (1) to connect one side edge and the other side edge of the base material (2). 3) A packaging bag comprising: 2. The packaging bag according to claim 1, wherein both sides of said base material (2) are adhered to both sides of said tape body (3). 3. The packaging bag according to claim 1, wherein one of the side portions of the tape body (3) is adhered to a position on the inner surface side of the base material (2) and separated from the side end. . 4. A method of manufacturing a packaging bag for manufacturing a packaging bag capable of accommodating an object to be accommodated therein by bonding inner surfaces of both ends of a tubular body (1) folded flat.
The tubular body is formed by connecting one side edge and the other side edge of the base material (2) formed in a tubular shape from the sheet body by a tape body (3) provided in the axial direction of the tubular body (1). A method for manufacturing a packaging bag, comprising: forming the packaging bag by forming (1). 5. The method for manufacturing a packaging bag according to claim 4, wherein both side edges of said base material (2) are adhered to both side portions of said tape body (3). 6. The production of a packaging bag according to claim 4, wherein one side of the tape body (3) is adhered to a position on the inner surface side of the base material (2) and separated from the side end. Method.