JP2014189308A - Form-fill-sealing method and form-fill-sealing device using belt-like film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form-fill-sealing method and a form-fill-sealing device which can arrange a plurality of storage spaces in a thickness direction of a packaging bag.SOLUTION: One or a plurality of belt-like films 1, 2 are combined so that three or more film walls 1c, 1d, 2c, 2d are overlapped in a thickness direction by folding at fold lines 1b, 2b or by matching and overlapping side edge parts 1a, 2a. Two longitudinal seal parts 3a, 3b are formed on both sides in a width direction of the three or more film walls 1c, 1d, 2c, 2d by sealing overlapped parts of the fold lines 1b, 2b, or the side edge parts 1a, 2a respectively along a longitudinal direction. Two or more cylindrical storage spaces 5a, 5b, 5c structured by being surrounded by the three or more film walls 1c, 1d, 2c, 2d and the two longitudinal seal parts 3a, 3b are respectively filled with content.

Description

  The present invention relates to a bag making and filling method and a bag making and filling apparatus using a belt-like film.

As a method for producing a packaging bag having a plurality of storage spaces (multi-chamber packaging), Patent Document 1 discloses that a plurality of types of pharmaceuticals (powdered medicines) are formed on a portion of a continuous packaging sheet formed by sequentially forming a dividing partition. And tablet etc.) are sequentially supplied in an arbitrary arrangement, and a packaging method is described in which the required number of packages is cut for each dose.
Further, Patent Document 2 discloses a partition seal member that sequentially forms a partition chamber whose upper portion is opened in a long wrapping sheet, a split seal member that divides the partition chamber in the depth direction, and an upper portion before and after the split seal. A packaging device is described that includes a drug input member that inputs a drug from an opening and an aperture seal member that seals an upper opening.
Further, in Patent Document 3, a packaging film that is continuously transferred is vertically sealed, and the packaging film is formed in a cylindrical shape by the longitudinal seal portion, and the packaging film formed in the cylindrical shape is horizontally sealed and packaged. In a packaging machine that forms a bottom that becomes a bag, is filled with an article to be packaged, and is further continuously sealed as a packaging bag by laterally sealing the location on the side of the bag mouth, three locations on the left and right edges and in the middle Describes a filling and packaging machine in which a vertical seal portion is formed and two packaging bags are formed side by side.

JP 58-171310 A Japanese Utility Model Publication No. 62-179901 JP 2001-240008 A

  In the conventional multi-chamber packaging, a plurality of storage spaces arranged in parallel are arranged in the longitudinal direction or the width direction of the film (or paper), so the area of the packaging bag increases in proportion to the number of storage spaces.

  This invention is made | formed in view of the said situation, and makes it a subject to provide the bag making filling method and bag making filling apparatus which can arrange | position several accommodation space in the thickness direction of a packaging bag. .

In order to solve the above-mentioned problems, the present invention is such that one or more strip-shaped films are folded by folding lines or overlapped with the side edges so that three or more film walls overlap in the thickness direction. In combination with each other, on both sides in the width direction of the three or more film walls, the portions where the fold lines or side edges are overlapped are respectively sealed along the longitudinal direction to form two vertical seal portions, Each of the two or more cylindrical storage spaces, which is surrounded by the film wall and the two vertical seal portions and is one less than the number of the film walls, is filled with the contents, There is provided a bag making and filling method characterized in that the two or more cylindrical housing spaces are sealed by sealing a space between vertical seal portions in the width direction to form a horizontal seal portion.
Overlapping a plurality of belt-shaped films, forming a fold line in the center in the width direction, folding them on the same side and stacking them, the number of film walls double the number of belt-shaped films in the thickness direction. Such a combination is preferable.
It is preferable that three or more of the lateral seal portions are formed apart from each other in the longitudinal direction of the strip film while transporting the strip film in the longitudinal direction.

The present invention also provides a film wall in which one or a plurality of belt-like films are combined so that three or more film walls overlap in the thickness direction by folding by folding lines or by superimposing side edges. And a vertical seal that forms two vertical seal portions by sealing the portions where the folding lines or side edges overlap each other on both sides in the width direction of the three or more film walls along the longitudinal direction. Means, and the contents in each of the two or more cylindrical storage spaces, which is surrounded by the three or more film walls and the two vertical seal portions, and is one less than the number of the film walls. A bag making and filling apparatus comprising: filling means for filling; and horizontal sealing means for sealing the space between the two vertical seal portions in the width direction to seal the two or more cylindrical housing spaces. To provide.
The film wall combination means stacks a plurality of strip films, forms a fold line in the center in the width direction, folds them on the same side, and stacks them in the thickness direction to obtain 2 of the number of strip films. It is preferable to combine so that double the number of film walls overlap.
It is preferable to have a conveying means for conveying the belt-like film in the longitudinal direction, and to form three or more of the lateral seal portions separated in the longitudinal direction of the belt-like film.

  According to the present invention, since a plurality of accommodation spaces can be arranged in the thickness direction of the packaging bag, the area of the packaging bag can be suppressed.

It is drawing which shows an example of the bag making filling apparatus of this invention, (a) is a side view, (b) is a front view. FIG. 3 is a cross-sectional view corresponding to “step 1” and “step 2” in FIG. It is a side view explaining box motion operation of a horizontal seal device.

The present invention will be described below based on preferred embodiments with reference to the drawings.
FIG. 1 shows an example of the bag making and filling apparatus of the present invention. The schematic configuration of the bag making and filling device 10 is similar to a general vertical bag making and filling device in that the film is sealed along the longitudinal direction to form a vertical seal portion, and the film is wide. A horizontal sealing device 22 that forms a horizontal sealing portion by sealing in a direction, and a filling device 23 that fills the contents by inserting a nozzle into a cylindrical accommodation space constituted by a film are provided. Each film is a continuous belt-like film conveyed in the longitudinal direction.

  In the bag making and filling apparatus 10 of this embodiment, the two strip films 1 and 2 are conveyed from above. As conveying means for conveying the strip films 1 and 2 in the longitudinal direction, one or a plurality of conveying rolls 11a and 11b (see FIG. 1B) are provided for each film. The strip-shaped film 1 transported by the transport roll 11a is fed from above the strip-shaped film 1 transported by the transport roll 11b, and is overlapped on the alignment member 12 in the vertical direction.

The two belt-like films 1 and 2 that are overlaid are formed by forming folding lines 1b and 2b in the center in the width direction by the folding member 13, and the side edges 1a and 2a are folded and overlapped so as to face the same side. . As a result, as shown in FIG. 2, the film walls 1c, 1d, 2c, and 2d, which are twice the number of the strip films 1 and 2, overlap in the film thickness direction (vertical direction in FIG. 2). Combined.
In FIG. 2, the strip-shaped film 1 is the inside, the strip-shaped film 2 is the outside, and the film walls are stacked in order of 2c, 1c, 1d, and 2d from the bottom to the top.

The vertical sealing device 21 seals the portions where the folding lines 1b and 2b or the side edges 1a and 2a are overlapped on the both sides in the width direction of the film walls 1c, 1d, 2c and 2d, respectively, along the longitudinal direction. Two vertical seal portions 3a and 3b are formed.
In “step 2” in FIG. 2, a first vertical seal portion 3a is formed at a place where the pair of side edge portions 1a, 1a of the belt-like film 1 and the pair of side edge portions 2a, 2a of the belt-like film 1 are overlapped, A second vertical seal portion 3b is formed at a location where the folding lines 1b and 2b of the strip films 1 and 2 are overlapped.

The vertical seal device 21 includes a substantially cylindrical or cylindrical rotary body 21a (roll body) and a vertical seal roll provided with a convex vertical seal member 21b protruding from the outer peripheral surface of the rotary body 21a. The central axis of the rotating body 21a is arranged in parallel to the width direction of the belt-like films 1 and 2 to be conveyed (left and right direction in FIG. 1B). The vertical seal member 21b is formed in an annular shape along the circumferential direction on the outer peripheral surface of the rotating body 21a.
The film conveyed to the vertical sealing device 21 is heat-sealed by being heated while being sandwiched between the vertical sealing members 21b and 21b of the two vertical sealing rolls, as shown in FIG. Vertical seal portions 3a and 3b are formed. The vertical seal roll that forms the vertical seal portion 3a and the vertical seal roll that forms the vertical seal portion 3b may be connected together along the central axis, or may be configured separately.

The horizontal seal device 22 includes a horizontal seal roll including a substantially columnar or cylindrical rotary body 22a (roll body) and a convex horizontal seal member 22b protruding from the outer peripheral surface of the rotary body 22a. The central axis of the rotator 22a is arranged parallel to the width direction of the belt-like films 1 and 2 to be conveyed (the left-right direction in FIG. 1B). The horizontal seal member 22b is formed in parallel to the rotation axis of the rotating body 22a.
As shown in FIG. 3, the rotation axes of the horizontal seal rolls are parallel to each other, and the horizontal seal rolls can rotate in opposite directions around the rotation axis of the rotating body 22a. A plurality of (here, four) horizontal seal members 22b are formed at equal intervals along the circumferential direction of the rotating body 22a. Thereby, the horizontal seal | sticker part 4,4 ... is formed for every fixed pitch in the longitudinal direction of a film, and the packaging bag 5 is manufactured between the horizontal seal | sticker parts 4 and 4. FIG. The number of horizontal seal members 22b included in each rotating body 22a may be one or more, and can be set arbitrarily.

  The horizontal seal device 22 forms a horizontal seal portion 4 by sealing the space between the two vertical seal portions 3a and 3b in the width direction of the film walls 1c, 1d, 2c and 2d. In FIG. 1 (b), the horizontal seal portion 4 is schematically illustrated so as to be formed between the vertical seal portions 3a and 3b, but the formation range of the horizontal seal portion 4 is the vertical seal portions 3a and 3b. May overlap. In the case of this example, the film is sandwiched by the horizontal seal members 22b and 22b over the entire width direction from the side edge portions 1a and 2a of the film to the folding lines 1b and 2b, and the horizontal seal portion 4 is formed in the entire width direction. .

Of the two horizontal seal portions 4 and 4 above and below each packaging bag 5, the lower horizontal seal portion 4 is a bottom portion that is closed first, and the upper horizontal seal portion 4 is closed later. It is a filling port. The filling port is closed after filling the contents. The same horizontal seal portion 4 can serve as the filling port of the lower packaging bag 5 and the bottom of the upper packaging bag 5. When each packaging bag 5 is cut out, the lateral seal portion 4 is divided so that a sufficiently wide seal portion remains in both the packaging bags 5.
The bottom of each packaging bag may be closed before filling the contents, may be closed while filling the contents, or may be closed after filling the contents. It is preferable to close the bottom before filling the contents because the contents are unlikely to be sandwiched between the film walls when the bottom is sealed. If the bottom is closed during or after filling the contents, filling of the contents can be started without waiting for the bottom seal, and the process can be made faster.

As shown in FIG. 1A, the film conveyed to the horizontal sealing device 22 is heat-sealed by being heated while being sandwiched between the horizontal sealing members 22b and 22b of the two horizontal sealing rolls, A lateral seal portion 4 is formed. As shown in FIG. 3, it is preferable that the horizontal seal roll can be moved by a driving unit (not shown) along the film transport direction (from the top to the bottom in FIG. 3). The direction of movement indicated by the arrow F is that each horizontal seal roll is at a speed that does not exceed the film conveyance speed when the portion where the horizontal seal portion 4 of the film is formed is sandwiched between the horizontal seal members 22b and 22b. Represents falling. Thereby, compared with the case where a horizontal seal roll rotates in a fixed position, the horizontal seal members 22b and 22b can clamp a film for a longer time, and can ensure sufficient heating time even if the conveyance speed of a film is high. .
Further, the moving direction indicated by the arrow R moves away from the horizontal seal portion 4 after the heating of one horizontal seal portion 4 is finished, and moves in the direction opposite to the film conveyance direction (from the bottom to the top in FIG. 3). It means to go up. Since the descending distance of the arrow F and the ascending distance of the arrow R are equal, the movement of each horizontal seal roll becomes periodic. After moving along the arrow R, the location where the horizontal seal portion 4 is to be formed (the location one above) is sandwiched between the horizontal seal members 22b and 22b. After that, each horizontal seal roll descends along the arrow F again. When the movement of the arrows F and R is a path along a substantially rectangular circumference, it is generally called a box motion.
FIG. 3 shows a configuration in which not only the horizontal seal roll of the horizontal seal device 22 but also the cooling roll of the cooling device 25 (described later) of the horizontal seal unit 4 moves up and down (box motion) in the same manner. When the horizontal seal portion 4 is formed by a submerged seal, it is possible to seal more reliably by ensuring sufficient heating time and subsequent cooling time.

By sealing the strip films 1 and 2, two or more cylindrical storage spaces 5a, 5b, and 5c surrounded by the film walls 1c, 1d, 2c, and 2d and the two vertical seal portions 3a and 3b are formed. In the vertical seal portion 3a, the four side edge portions 1a, 1a, 2a, and 2a are bonded by a seal. In the vertical seal portion 3b, the two fold lines 1b and 2b are bonded by a seal. The number of storage spaces 5a, 5b, 5c is one less than the number of film walls 1c, 1d, 2c, 2d.
In “step 2” in FIG. 2, the accommodation space 5a is formed between the film walls 1c and 1d, the accommodation space 5b is formed between the film walls 1c and 2c, and the accommodation space 5c is located between the film walls 1d and 2d. It is formed.

  The filling device 23 can fill the contents by inserting the nozzles 23a, 23b, and 23c into the accommodation spaces 5a, 5b, and 5c, respectively. As shown in FIG. 1, the nozzles 23a, 23b, and 23c are formed between the film walls 1c, 1d, 2c, and 2d from the gaps between the side edges 1a and 2a of the belt-like films 1 and 2 that are not vertically sealed (see “ step 1)). Since the gap between the side edge portions 1a and 2a is held at the place where the nozzles 23a, 23b and 23c are inserted, the holding member 14 can be inserted into the belt-like films 1 and 2. The holding member 14 may be provided on the upstream side, the downstream side, or both of the locations where the nozzle intersects the side edges 1a and 2a.

The contents filled from the nozzles 23a, 23b, and 23c are not particularly limited, but preferably contain liquid or solid. When performing high-speed filling with a vertical device, fluid content that can be placed in a predetermined position (bottom of the packaging bag) by gravity after being discharged from the tip of the nozzle into the cylindrical storage space Is preferred. Examples of fluid contents include liquids, powders, and granules.
The filling device 23 is provided with different nozzles 23a, 23b, and 23c for the accommodation spaces 5a, 5b, and 5c. The contents supplied to each accommodation space by each nozzle may be the same or different. When a plurality of nozzles are prepared to be filled with the same contents, the nozzles may receive supply of contents from the same supply source (container, tank, hopper, etc.). The nozzle can be provided with a pump, a controller for filling amount, and the like.

  In the bag making and filling apparatus 10 of this embodiment, a pair of ironing rolls 24 and 24 are provided on the upper side of the horizontal sealing apparatus 22. The squeezing rolls 24 and 24 are provided so as to be in contact with and pressurize both sides of the tubular film formed into a tubular shape by the longitudinal seals of the strip films 1 and 2 and to be separated from the tubular film. Between just before performing the horizontal seal and during the horizontal seal, the squeezing roll 24 clamps the tubular film from both sides to block the flow of the contents discharged from the nozzle, and before the horizontal seal is formed. Reduces the amount of contents attached to the planned seal part. In addition, after the horizontal seal is completed, the distance between the squeezing rolls 24 and 24 is increased to be separated from the tubular film, and the content can be allowed to flow onto the horizontal seal portion.

If necessary, a liquid level sensor (not shown) may be provided above the ironing roll 24 so that the height of the content discharged from the nozzle is always kept within a certain range above the ironing roll. By sealing in this state, the horizontal seal is a so-called submerged seal that pushes and seals the contents between the film walls, and the contents are filled with a predetermined amount.
In this case, the filling amount of the contents into the packaging bag 5 (mass or volume per packaging bag) is determined by the timing at which the squeezing roll interrupts the liquid flow and the degree of swelling of the storage space, and is a constant filling amount. Can be easily obtained. The degree of swelling of the storage space is determined by the strength of the waist of the material of the film and is generally constant. However, a guide for regulating the degree of swelling may be provided if accuracy is expected. It is preferable to install the bulge regulating guide because it has an effect of reducing the load of the contents when the horizontal seal portion is hot.

In the bag making and filling apparatus 10 of this embodiment, the vertical seal portions 3a and 3b and the horizontal seal portion 4 formed by heating are cooled to promote the solidification of the film, so that a cooling means for the seal portion can be provided.
The cooling device 25 of the horizontal seal portion 4 is, like the horizontal seal device 22, a substantially columnar or cylindrical rotating body 25a (roll body) and parallel to the rotation axis of the rotating body 25a on the outer peripheral surface of the rotating body 25a. And a cooling roll provided with a convex cooling member 25b formed in the above. The horizontal seal portion 4 is cooled while being sandwiched between the cooling members 25b and 25b of the pair of cooling rolls.
As with the vertical sealing device 21, the cooling device 26 for the vertical sealing portions 3a and 3b is a substantially columnar or cylindrical rotating body 26a (roll body) and a circular shape along the circumferential direction on the outer peripheral surface of the rotating body 26a. A cooling roll including a convex cooling member 26b formed in an annular shape is provided. The vertical seal portions 3a and 3b are cooled while being sandwiched between the cooling members 26b and 26b of the pair of cooling rolls.

The packaging bag 5 that has been sealed and filled is manufactured in a state in which a plurality of (many) packaging bags 5 are connected to each other via the lateral seal portion 4. By the horizontal seal portion 4, the accommodation spaces 5a, 5b, 5c of the packaging bags 5 are separated from each other and the contents are sealed.
For a series of films, the number of horizontal seal portions 4 is at least one greater than the number of packaging bags 5 (for example, if there are two packaging bags, the number of horizontal seal portions is 3 or more). A cutter 15 can be provided in order to form a perforation in the horizontal seal portion 4 or to form a notch in a vertical seal portion in the vicinity thereof. Here, the cutter 15 includes a cutting device 15a having a blade and a cradle 15b, and performs processing by sandwiching a seal portion between the blade and the cradle. This cutter performs processing while the horizontal seal portion is connected. However, at this stage, the horizontal seal portion may be cut to separate the individual packaging bags 5, 5,.

As mentioned above, although this invention has been demonstrated based on suitable embodiment, this invention is not limited to the above-mentioned example, Various modifications are possible in the range which does not deviate from the summary of this invention.
In the present invention, a packaging bag is obtained by combining one or a plurality of belt-like films so that three or more film walls overlap in the thickness direction by folding them by folding lines or by superimposing side edges. Two or more cylindrical accommodation spaces can be formed in the thickness direction of the (film).
In regard to the transport direction of the combined film walls, FIG. 1 shows a vertical apparatus transported from top to bottom along the direction of gravity. However, the present invention is not limited to this, and the film is transported horizontally. It can also be applied to a horizontal type apparatus, and the film can be conveyed obliquely.

In the example shown in FIG. 2, each of the strip films 1 and 2 is folded so that a fold line is formed at one central portion so that the cross section is substantially “V” -shaped. A fold line may be formed as described above and folded into a substantially “N” shape, a substantially “W” shape, a substantially “M” shape, or the like. Moreover, two or more cylindrical accommodation spaces are formed in the thickness direction of the packaging bag (film) by a method of aligning both side edges of each belt-like film and overlapping them without folding three or more belt-like films. be able to.
In the example shown in FIG. 2, the folding lines of the belt-like films 1 and 2 folded in a substantially “V” shape are overlapped so that the inner surface of one belt-like film faces the outer surface of another belt-like film. However, two or more tubular shapes in the thickness direction of the packaging bag (film) can also be obtained by a method of superposing the outer surfaces of the substantially “V” -shaped belt-like films facing each other, such as “VV” or “VVV”. Can be formed.
As another method, a strip-shaped film having a substantially “I” -shaped cross section without a fold line is formed on the outside of one strip-shaped film folded in a substantially “V” shape, and is divided into “IV”, “IIV”, “ IVI "," VI ", a method of overlapping like" VII ", or by inserting a band-shaped film without a folding line inside the folded band-shaped film, one side edge of the band-shaped film without a folding line is For example, a method of abutting against the fold line of the folded belt-like film can be mentioned.

In the sealing device used for the vertical sealing means and the horizontal sealing means, it is preferable to provide heating means (not shown) such as a heater and temperature measuring means (not shown) for measuring the temperature of the sealing member inside the sealing member. Further, in the cooling device for the seal portion, a cooling means (not shown) such as a pipe through which a heat medium is flowed or a temperature measuring means (not shown) for measuring the temperature of the seal member may be provided inside the seal member.
The sealing device is not limited to the one provided with the seal roll rotating around the axis, and one provided with the seal bar that reciprocates can also be adopted.

The filling means of the contents is not limited to the nozzle, but the method of pouring between the film walls with a hopper, the method of placing the contents held by tongs between the film walls, the contents measured with a spoon, scissors, etc. Various filling means such as a method of putting between the film walls can be used.
The present invention can be used for manufacturing a package product in which a bag is hermetically filled with contents such as liquid, powder, granule, and solid.

DESCRIPTION OF SYMBOLS 1, 2 ... Strip-like film, 1a, 2a ... Side edge part, 1b, 2b ... Folding line, 1c, 1d, 2c, 2d ... Film wall, 3a, 3b ... Vertical seal part, 4 ... Horizontal seal part, 5 ... Packaging Bags, 5a, 5b, 5c ... accommodating space, 10 ... bag making and filling device, 11a, 11b ... conveying roll (conveying means), 21 ... vertical sealing device (vertical sealing means), 22 ... horizontal sealing device (horizontal sealing means) 23 ... Filling devices (filling means), 23a, 23b, 23c ... nozzles.

Claims (6)

Combine one or more strip-shaped films by folding them along the fold line, or by combining the side edges, so that three or more film walls overlap in the thickness direction,
On the both sides in the width direction of the three or more film walls, the portions where the fold lines or side edges are overlapped are respectively sealed along the longitudinal direction to form two vertical seal portions,
Filling each of the two or more cylindrical accommodation spaces, which is configured by being surrounded by the three or more film walls and the two vertical seal portions, one less than the number of the film walls,
A bag making and filling method characterized in that the two or more cylindrical storage spaces are sealed by sealing the space between the two vertical seal portions in the width direction to form a horizontal seal portion.   Overlapping a plurality of belt-shaped films, forming a fold line in the center in the width direction, folding them on the same side and stacking them, the number of film walls double the number of belt-shaped films in the thickness direction. The bag making and filling method according to claim 1, wherein the bag making and filling are combined as described above.   3. The bag making and filling method according to claim 1, wherein three or more of the lateral seal portions are formed apart from each other in the longitudinal direction of the belt-like film while the belt-like film is conveyed in the longitudinal direction. A film wall combination means for combining one or a plurality of strip-like films so that three or more film walls overlap in the thickness direction by folding by folding lines or by overlapping side edges;
Vertical sealing means for forming two vertical seal portions by sealing the portions where the folding lines or side edge portions are overlapped on both sides in the width direction of the three or more film walls, respectively, along the longitudinal direction;
Filling each of the two or more cylindrical storage spaces, which is surrounded by the three or more film walls and the two vertical seal portions, and is one less than the number of the film walls, with the contents. Means,
A bag making and filling apparatus comprising: a horizontal sealing means for sealing between the two vertical seal portions in a width direction to seal the two or more cylindrical accommodation spaces.   The film wall combination means stacks a plurality of strip films, forms a fold line in the center in the width direction, folds them on the same side, and stacks them in the thickness direction to obtain 2 of the number of strip films. 5. The bag making and filling apparatus according to claim 4, wherein the film walls are combined so that double the number of film walls overlap.   6. The bag making according to claim 4 or 5, further comprising a conveying means for conveying the belt-like film in the longitudinal direction thereof, wherein three or more lateral seal portions are formed apart from each other in the longitudinal direction of the belt-like film. Filling equipment.

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