JP2022097384A - Bag-making guide, vertical type bag-making filling packaging machine, and manufacturing method of film packaging bag with content therein - Google Patents

Abstract

To provide a bag-making guide that allows manufacturing of film packaging bags that have no wrinkles or cracks in a functional layer.SOLUTION: A bag-making guide 10 that folds a band-like film F into a tube includes: a collar part 12 in a sailor-collar shape into which the film F is introduced; and a cylindrical part 13 that is connected to an inner edge of the collar part 12 and extends downward. The collar part 12 is provided on the upstream side and has a rear plate part 12a in a flat triangle shape that is slated against a horizontal surface, and an angle α of the rear plate part 12a against the horizontal surface is 5° or more and 40° or less, and an angle β of the apex of the rear plate part 12a is 80°or more and 140° or less.SELECTED DRAWING: Figure 3

Description

The present invention relates to a bag making guide that bends a strip-shaped film into a tube shape. In particular, the present invention relates to a bag making guide that bends a functional film such as an aluminum film into a tube shape.

As a material for the flexible packaging material, there is an aluminum film (aluminum laminated film, aluminum vapor-deposited film) in which an aluminum foil and a plastic film such as polyethylene or nylon are combined. Aluminum film is called a functional film because it has excellent light-shielding property, moisture-proof property, fragrance-retaining property, and gas barrier property.
By using the aluminum film, an aluminum film packaging bag having functions such as UV protection, anti-sensitivity, and anti-oxidation can be obtained. Aluminum film packaging bags are used in the fields of foods, cosmetics, pharmaceuticals, chemicals, electronic devices and the like.
There are also packaging bags made of functional films containing paper and non-woven fabrics.

International Publication No. 2006/0892920

The mainstream of aluminum film packaging bags is a three-way seal bag or a four-way seal bag in which an aluminum film is folded in half and heat-welded. However, in the three-way seal bag and the four-way seal bag, when the film is heat-welded and the bag is closed, the film is restrained in the vertical and horizontal directions, so that the bag is liable to wrinkle. Further, the three-way seal bag and the four-way seal bag have a small filling amount per film unit area and are not suitable for filling solid substances and the like.

Since the aluminum film has a high thermal conductivity, when it is heat-welded, the temperature rises sharply as compared with a normal resin film. Therefore, when a horizontal seal is formed on the aluminum film, if a liquid or the like adheres (residue) to the aluminum film, a steam explosion (foaming phenomenon) occurs and a seal failure occurs. Such a foaming phenomenon can be prevented by quantitatively filling the contents with an elongated straight nozzle pipe having a built-in on-off valve at the tip to avoid liquid adhesion to the film. However, when the aluminum film is folded in half using a plate-shaped bag making guide (triangular sailor) or a roller, the nozzle pipe with a built-in on-off valve cannot be used as it is. This is because the bag making guide and the roller are arranged directly above the content input port, so that the nozzle pipe needs to be bent and installed, and the on-off valve cannot be built in.

On the other hand, the so-called pillow-shaped packaging bag is less likely to wrinkle and has a large filling amount. In the pillow-shaped packaging bag, a strip-shaped film is first formed into a tube shape, and the mating surfaces thereof are heat-welded (vertically sealed) to form a tube-shaped film. Then, the contents are filled (charged) in this tubular film, and the film is heat-welded (horizontally sealed) in the width direction to form a bag body. Finally, when this bag body is separated from the tube film, it becomes a pillow-shaped packaging bag containing the contents.
Since the vertical bag filling and packaging machine that manufactures pillow-shaped packaging bags can have a large opening for the contents input port, it is easy to fill only a mixture of solids and liquids or solids as the contents. be. In addition, the vertical bag-making filling and packaging machine can also be equipped with an elongated nozzle pipe having a built-in on-off valve.

However, when the pillow-shaped packaging bag is formed from the aluminum film, scaly wrinkles and cracks are formed in the aluminum layer. When the aluminum film is three-dimensionally bent into a tube shape, uneven tension and stress concentration occur in the aluminum layer. This causes wrinkles and cracks in the aluminum layer.
If the aluminum layer is wrinkled or cracked, the appearance and functionality of the aluminum film packaging bag will deteriorate, and the commercial value will be lost.

Similarly, when a pillow-shaped packaging bag is formed from another functional film, wrinkles or the like are likely to form in a functional layer containing, for example, paper or a non-woven fabric. Therefore, the appearance and functionality of the packaging bag are deteriorated, and the commercial value is lost.

It is an object of the present invention to provide a bag making guide capable of manufacturing a film packaging bag without wrinkles and cracks, a vertical bag making filling and packaging machine, and a method for manufacturing a film packaging bag containing contents.

An embodiment of the bag-making guide according to the present invention is a bag-making guide that bends a strip-shaped film into a tube shape, and is connected to a sailor-colored collar portion into which the film is introduced and an inner edge of the collar portion to be downward. The collar portion is arranged on the upstream side and has a flat triangular rear plate portion inclined with respect to the horizontal plane, and the angle α of the rear plate portion with respect to the horizontal plane is 5. It is characterized in that it is not less than or equal to 40 °.

The angle α is characterized by being 10 ° or more and 30 ° or less. The angle α ° is characterized by being 12 ° or more and 20 ° or less.
The angle β of the apex angle of the rear plate portion is 80 ° or more and 140 ° or less. The angle β is 90 ° or more and 120 ° or less. The angle β is 100 ° or more and 110 ° or less.
The ratio H / R of the height H of the collar portion to the radius R of the cylindrical portion is 4 or more and 16 or less. The ratio H / R is 6 or more and 13 or less. The ratio H / R is 8 or more and 10 or less.

The collar portion has a pair of front plate portions connected to the rear plate portion and the cylindrical portion, and the front plate portion is formed by bending a bender.
It is characterized by comprising a driven roller which is arranged close to or closely along the bottom of the rear plate portion to introduce the film into the collar portion.
It is characterized by being provided inside the cylindrical portion with an auxiliary pipe that forms a gap between the cylindrical portion and the film so that the film can slide through the cylindrical portion.

The film is characterized by having a functional layer. The functional layer is characterized by containing aluminum. The functional layer is characterized by containing paper. The functional layer is characterized by containing a non-woven fabric. The film is characterized in that it comprises only a functional layer. The main material of the functional layer is characterized by having a higher Young's modulus than the ordinary flexible packaging film resin.

An embodiment of the vertical bag-making filling and packaging machine according to the present invention includes a film supply unit that supplies a strip-shaped film, a bag-making guide that bends the film into a tube shape and changes the transport direction downward, and the film. A vertical seal portion that heat-welds the side edges of the film, a film transport portion that transports the film downward, a filling portion that charges the contents inside the film, and the film is heat-welded in the width direction. A horizontal sealing portion for forming a bag body, a cutter for separating the bag body from the film, and a bag making guide according to the above embodiment are used as the bag making guide.

The filling portion is characterized by including a hopper pipe that is inserted into the bag making guide and into which a solid substance is charged as the content.
The filling portion is characterized by comprising a nozzle pipe that is inserted into the bag making guide and discharges a liquid or a fluid as the contents. The nozzle pipe has a shape extending straight from above the bag making guide to directly above the lateral seal portion, and has a built-in on-off valve at the lower end to quantitatively fill the contents.
A pre-seal that partially heat-welds the film, which is arranged directly under the filling portion and is handled by sandwiching the film in the lateral direction, and the film which is handled and adhered by the shigoki portion in the width direction. It is characterized by having a part and.

An embodiment of the method for manufacturing a film packaging bag containing contents according to the present invention includes a film supply step of supplying a strip-shaped film, a film bending step of bending the film into a tube shape, and a film bending step of changing the transport direction downward. A vertical sealing step of heat-welding the side edges of the film, a film transporting step of transporting the film downward, a filling step of charging the contents into the film, and a lateral heat welding of the film. It is characterized by having a horizontal sealing step of forming a bag body and a bag body cutting step of separating the bag body from the film, and using the bag making guide of the above embodiment in the film bending step. do.

The bag-making guide, the vertical bag-making filling and packaging machine, and the method for manufacturing a film packaging bag containing contents of the present invention can produce a film packaging bag without wrinkles or cracks. In particular, the packaging bag can be satisfactorily manufactured without causing wrinkles or cracks in the functional layer.

(A) A perspective view showing an aluminum film packaging bag G containing contents, and (b) a cross-sectional view showing an aluminum film F. It is a side view schematically showing the main part of the vertical bag making filling and packaging machine 1 which concerns on 1st Embodiment. It is a perspective view which shows the bag making guide 10. It is a figure which shows the former 11A, is (a) a perspective view, (b) a front view and a partially enlarged view. It is a figure which shows the former 11A, is (a) a rear view, (b) a plan view, (c) a bottom view. It is a figure which shows the former 11A, (a) the left side view, (b) the right side view. It is a figure which shows the former 11B, (a) a front view and a partially enlarged view, (b) a rear view, (c) a plan view. It is a figure which shows the former 11B, and is (a) bottom view, (b) left side view, (c) right side view. It is a figure which shows the former 11C, (a) a front view and a partially enlarged view, (b) a rear view, (c) a plan view. It is a figure which shows the former 11C, (a) bottom view, (b) left side view, (c) right side view. It is a side view schematically showing the main part of the vertical bag making filling and packaging machine 2 which concerns on 2nd Embodiment.

Hereinafter, a method for manufacturing the vertical bag-making filling and packaging machines 1 and 2 and the aluminum film packaging bag G containing the contents according to the embodiment of the present invention will be described.
The vertical bag-making filling and packaging machines 1 and 2 form a bag body from the aluminum film F, and manufacture an aluminum film packaging bag G in which the contents X are filled inside the bag body.

[Aluminum film packaging bag G]
FIG. 1A is a perspective view showing an aluminum film packaging bag G containing contents.
The vertical bag-making filling and packaging machines 1 and 2 manufacture a pillow-shaped aluminum film packaging bag G. The pillow-shaped packaging bag is a bag having a horizontal seal Y at the upper end and the lower end of the bag, and a vertical seal T extending in the vertical direction on the rear surface of the bag.
The pillow-shaped aluminum film packaging bag G is formed by bending a single strip-shaped aluminum film F into a tube shape, heat-welding (forming a vertical seal T), filling the contents X, and then heating to a specified length. It is formed by welding (forming a horizontal seal Y) and cutting.
In general, the pillow-shaped packaging bag has the advantages that the filling amount per film unit area can be maximized and wrinkles are less likely to occur. Pillow-shaped packaging bags are also called gassho-pasted bags and back-pasted bags. The vertical sticker on the pillow-shaped packaging bag is also called a back sticker.

[Aluminum film F]
FIG. 1B is a cross-sectional view showing the aluminum film F.
The aluminum film F is a functional film having a light-shielding property, a moisture-proof property, a fragrance-retaining property, and a gas barrier property.
The aluminum film F is an aluminum laminated film or an aluminum vapor-deposited film.
The aluminum laminated film is a film obtained by laminating other materials on aluminum foil. The dry laminating method is often used to laminate other materials on aluminum foil.
Typical laminate configurations include "PET / AL / PE", "NY / AL / PE", "PET / AL / NY / CPP" and the like. The material described first is the material placed on the outer surface of the bag, and the material described last is the material placed on the inner surface of the bag.
As shown in FIG. 1 (b), the film labeled "PET / AL / PE" has a three-layer structure of PET (polyethylene terephthalate) on the outer surface, AL (aluminum) in the middle, and PE (polyethylene) on the inner surface. It is a laminated film. The AL in the middle is an aluminum layer and is called a functional layer.

PET is excellent in tensile strength, tear strength, heat resistance, water resistance and the like. PE is excellent in cold resistance, waterproofness, insulation, chemical resistance, and oil resistance. NY (nylon) is excellent in tear strength and transparency. CPP (unstretched polypropylene) has excellent tear strength and transparency.

The aluminum-deposited film is a film in which aluminum is vacuum-deposited on the surface of a plastic film. PET is generally used as the material of this plastic film. Therefore, the aluminum-deposited film is described as aluminum-deposited PET, VMPET, or "PET / AL".

The aluminum layer (AL) has a higher Young's modulus (elastic modulus) than the resin layer (PET, PE, NY, PE, CPP, etc.). Therefore, when a pillow-shaped packaging bag is formed from the aluminum film F by using a conventional bag making method or method, scaly wrinkles or cracks are formed in the aluminum layer (AL).

[First Embodiment: Vertical bag making filling and packaging machine 1]
FIG. 2 is a side view schematically showing a main part of the vertical bag-making filling / packaging machine 1 according to the first embodiment.
The vertical bag-making filling and packaging machine 1 is controlled by a control unit (not shown) to form a pillow-shaped packaging bag from the aluminum film F, and at the same time, fills the packaging bag with the contents X to fill the contents with aluminum. Manufacture a film packaging bag G.

The content X is a solid, liquid, fluid or a mixture thereof. Specifically, the content X is not only beverages and foods, but also cosmetics such as shampoos and conditioners, industrial products such as paints (inks) and adhesives, and pharmaceuticals.

The vertical bag-making filling and packaging machine 1 includes a film supply unit 5 and a bag-making filling and packaging unit 8.
The film supply unit 5 is arranged at the rear, and the bag making / filling / packaging unit 8 is arranged at the front. The film supply unit 5 and the bag-making filling / packaging unit 8 are arranged inside the device frame (not shown), and are installed on the floor surface via the legs (not shown).

The longitudinal direction of the aluminum film F is also referred to as a transport direction. Of the transport directions, the direction closer to the film supply section 5 (the original fabric of the aluminum film F) is referred to as the upstream side, and the direction closer to the bag making filling / packaging section 8 (the content-containing aluminum film packaging bag G) is referred to as the downstream side. The width direction of the aluminum film F is also referred to as a lateral direction.
The longitudinal direction of the aluminum film F in the bag-making filling and packaging unit 8 is referred to as a vertical direction, a vertical direction, or a vertical direction. The lateral direction of the aluminum film F in the bag-making filling and packaging unit 8 is also referred to as a left-right direction. The thickness direction of the aluminum film F in the bag-making filling and packaging unit 8 is also referred to as a front-rear direction.

[Film supply unit 5]
The film supply unit 5 supplies the aluminum film F toward the bag-making filling / packaging unit 8. The film supply unit 5 includes a plurality of driven rollers and the like. The film supply unit 5 pivotally supports the aluminum film F (the original fabric of the aluminum film F) wound in a roll shape.
The film supply unit 5 feeds out the aluminum film F from the raw film (roll film) and passes it through a plurality of driven rollers. The film supply unit 5 sends out the aluminum film F with a constant tension so as not to loosen or meander.
The aluminum film F is fed upward from the film supply unit 5. The aluminum film F is conveyed from the film supply unit 5 toward the upper part of the bag-making filling and packaging unit 8 (the bag-making guide 10 described later).

[Bag-making filling and packaging unit 8]
The bag-making filling and packaging unit 8 bends the aluminum film F into a tube shape and feeds the aluminum film F downward to fill the inside of the tube-shaped aluminum film F with the contents X. Further, the bag-making filling and packaging unit 8 separates the bag body filled with the content X from the tubular aluminum film F to continuously manufacture the content-containing aluminum film packaging bag G.

The bag-making filling and packaging unit 8 includes a bag-making guide 10, a film transport unit 30, a vertical seal unit 20, a filling unit 40, a horizontal seal unit 50, a cutter unit 60, and the like.
A conveyor (not shown) for carrying out the aluminum film packaging bag G is attached below the bag-making filling and packaging unit 8.

<Bag making guide 10>
FIG. 3 is a perspective view showing the bag making guide 10.
4, 5, and 6 show the former 11A. 4 (a) perspective view, FIG. 4 (b) front view and partially enlarged view, FIG. 5 (a) rear view, FIG. 5 (b) plan view, FIG. 5 (c) bottom view, FIG. 6 (a). It is a left side view and FIG. 6B is a right side view.
7 and 8 show the former 11B. 7 (a) front view and partially enlarged view, FIG. 7 (b) rear view, FIG. 7 (c) plan view, FIG. 8 (a) bottom view, FIG. 8 (b) left side view, FIG. 8 (c). ) It is a right side view.
9 and 10 show the former 11C. 9 (a) front view and partially enlarged view, FIG. 9 (b) rear view, (c) plan view, FIG. 10 (a) bottom view, FIG. 10 (b) left side view, FIG. 10 (c) right side. It is a plan view.

The bag making guide 10 comes into close contact with the aluminum film F supplied from the film supply unit 5, and bends the aluminum film F into a tube shape. Further, the bag making guide 10 changes the transport direction from diagonally upward to downward.
That is, the aluminum film F is bent into a tube shape while sliding along the bag making guide 10. Then, the transport direction of the aluminum film F changes downward through the bag making guide 10.
The bag making guide 10 includes a former 11, a driven roller 14, an upper auxiliary pipe 15, a lower auxiliary pipe 16, and the like.
The bag making guide 10 or the former 11 is also called a shoulder, a sailor, a back guide, a forming collar, a forming shoulder, a tube former, or the like.

(Former 11)
The former 11 (formers 11A, 11B, 11C) is a member that bends the aluminum film F from a flat strip shape to a tubular shape, and includes a collar portion 12 and a cylindrical portion 13.
The collar portion 12 is a plate member obtained by bending a thin stainless steel plate into a sailor collar shape, and guides the aluminum film F. The collar portion 12 has a rear plate portion 12a on the upstream side and a pair of front plate portions 12b on the downstream side.
The rear plate portion 12a is a flat portion that is arranged on the upstream side and is inclined with respect to the horizontal plane. The rear plate portion 12a has an isosceles triangle shape having a base on the upstream side (rear-downward direction) and an apex angle arranged on the downstream side (front-upward direction).
The pair of front plate portions 12b are portions that are curved downward from the two hypotenuses of the rear plate portion 12a while facing forward. The front plate portion 12b has an elongated triangular shape whose width gradually narrows toward the bottom. The front plate portion 12b is formed by bending a bender.

The cylindrical portion 13 is a stainless steel cylindrical member connected to the inner edge (ridge line) of the collar portion 12. The cylindrical portion 13 extends along the vertical direction and has an opening cut so as to face diagonally forward. The collar portion 12 is connected without a gap along the opening edge (ridge line). The apex angle portion of the rear plate portion 12a is connected to the upper end of the opening edge of the cylindrical portion 13, and the pair of front plate portions 12b are further connected to the opening edge without a gap.
A slit extending in the vertical direction and connecting from the lower end to the opening is provided on the front surface of the cylindrical portion 13. Both sides of the aluminum film F are inserted into this slit in a state of being overlapped with each other.
A reinforcing member for preventing deformation of the cylindrical portion 13 is attached near the center of the outer peripheral surface of the cylindrical portion 13 in the vertical direction. A support member that supports the former 11 and is connected to the device frame is attached to the lower end of the cylindrical portion 13.

The shape and the like of the former 11 will be described in detail.
The former 11 (collar portion 12, cylindrical portion 13) has a symmetrical shape.
The collar portion 12 pulls in the aluminum film F from the bottom of the rear plate portion 12a. Since the rear plate portion 12a is flat and the base thereof is straight, the aluminum film F is introduced into the rear plate portion 12a without causing stress such as pulling or bending on the aluminum film F.
Then, the collar portion 12 slides the aluminum film F toward the cylindrical portion 13. The vicinity of the center in the width direction of the aluminum film F slides on the surface of the rear plate portion 12a, and the vicinity of both ends (side edges) in the width direction of the aluminum film F slides on the surface of the front plate portion 12b.
The vicinity of the center of the aluminum film F in the width direction is conveyed diagonally upward along the rear plate portion 12a. The vicinity of both ends of the aluminum film F in the width direction is conveyed while being gradually changed in direction from diagonally upward to downward along the front plate portion 12b.
First, the cylindrical portion 13 draws the vicinity of the center of the aluminum film F into the inner peripheral surface, and changes the transport direction from diagonally upward to downward. Further, the cylindrical portion 13 gradually pulls the aluminum film F into the inner peripheral surface and rolls it into a tube shape while changing its direction downward.
The aluminum film F is rolled into a tube shape while being transferred from the collar portion 12 to the cylindrical portion 13. The aluminum film F is gradually rolled into a tube shape while sliding the inner peripheral surface of the cylindrical portion 13 downward. The both side edges of the aluminum film F are inserted into the slits formed in the front surface of the cylindrical portion 13 in a state where the side edges overlap each other without being drawn into the cylindrical portion 13.

In the former 11, the opening shapes of the collar portion 12 and the cylindrical portion 13 are set (formed) so that the transport distance near the center in the width direction of the aluminum film F and the transport distance near both ends are the same. As a result, stress such as non-uniform tension, stress concentration, and bending hardly occurs on the aluminum film F. Therefore, the former 11 can prevent wrinkles and cracks from forming in the aluminum film F.

(Angle α)
In the former 11, the angle α of the rear plate portion 12a of the collar portion 12 with respect to the horizontal plane is set to be less than 45 °. In other words, the angle of the rear plate portion 12a of the collar portion 12 with respect to the central axis of the cylindrical portion 13 is set to 45 ° or more. By setting the angle α to less than 45 °, the aluminum film F can be smoothly transferred from the collar portion 12 to the cylindrical portion 13. Since the aluminum film F does not receive extra sliding resistance near the top of the former 11, it is possible to prevent wrinkles and cracks from forming in the aluminum layer.

Specifically, the former 11A has an angle α of 10 ° or more and 30 ° or less, and further has an angle α of 12 ° or more and 20 ° or less. The former 11B has an angle α of 15 ° or more and 40 ° or less, and particularly an angle α of 20 ° or more and 35 ° or less. The former 11C has an angle α of 5 ° or more and 15 ° or less, and further has an angle α of 8 ° or more and 12 ° or less.
That is, the angle α is 5 ° or more and 40 ° or less. Further, the angle α is preferably 10 ° or more and 30 ° or less. In particular, the angle α ° is preferably 12 ° or more and 20 ° or less.
Since the angle α is set in the above-mentioned range in this way, it is possible to prevent the aluminum film F from suddenly moving from the collar portion 12 to the cylindrical portion 13. Therefore, it is possible to realize good bag making of the aluminum film F.

(Angle β)
In the former 11, the angle β of the apex angle of the rear plate portion 12a of the collar portion 12 is set to 90 ° or more. By setting the angle β to 90 ° or more, the curvature of the front plate portion 12b becomes gentle, uneven tension and bending are less likely to occur in the aluminum film F, and wrinkles and cracks are prevented from forming in the aluminum layer. can.

Specifically, the former 11A has an angle β of 90 ° or more and 120 ° or less, and further has an angle β of 100 ° or more and 110 ° or less. The former 11B has an angle β of 100 ° or more and 140 ° or less, and particularly an angle β of 110 ° or more and 130 ° or less. The former 11C has an angle β of 80 ° or more and 100 ° or less, and further has an angle β of 85 ° or more and 95 ° or less.
That is, the angle β is preferably 80 ° or more and 140 ° or less, and the angle β is preferably 90 ° or more and 120 ° or less. In particular, the angle β is preferably 100 ° or more and 110 ° or less.
Since the angle β is set in the above-mentioned range in this way, the length of the rear plate portion 12a in the transport direction is shortened, and the aluminum film F is smoothly transferred from the collar portion 12 to the cylindrical portion 13. Therefore, it is possible to realize good bag making of the aluminum film F.

(Ratio H / R)
In the former 11, the ratio H / R of the height H of the collar portion 12 to the radius R (inner dimension) of the cylindrical portion 13 is set to 3 or more. The height H of the collar portion 12 is the same as the height of the opening edge (ridge line) of the cylindrical portion 13, and is substantially the same as the height of the front plate portion 12b. The former 11 is formed so that the cylindrical portion 13 is elongated and the pair of front plate portions 12b is greatly extended downward and the width thereof is gradually narrowed.
As a result, the aluminum film F is gradually transferred from the collar portion 12 to the cylindrical portion 13. Therefore, it becomes difficult for the aluminum film F to be pulled or bent unevenly, and it is possible to prevent wrinkles and cracks from forming in the aluminum layer.

Specifically, the former 11A has a ratio H / R of 6 or more and 13 or less, and further has a ratio H / R of 8 or more and 10 or less. The former 11B has a ratio H / R of 4 or more and 8 or less, and particularly a ratio H / R of 5 or more and 7 or less. The former 11C has a ratio H / R of 10 or more and 16 or less, and further has a ratio H / R of 12 or more and 14 or less.
That is, the ratio H / R is 4 or more and 16 or less. Further, the ratio H / R is preferably 6 or more and 13 or less. In particular, the ratio H / R is preferably 8 or more and 10 or less.
Since the ratio H / R is set in the above range in this way, the aluminum film F is slowly bent into a tube shape. Therefore, it is possible to realize good bag making of the aluminum film F.

(Driven roller 14)
A driven roller 14 is closely arranged or closely arranged at the rear end of the former 11 (rear plate portion 12a of the collar portion 12). The central axis of the driven roller 14 is arranged in parallel with the rear end (bottom of the rear plate portion 12a) of the collar portion 12.
The aluminum film F sent out from the film supply unit 5 is bridged over the driven roller 14. Then, the aluminum film F passes through the driven roller 14 so that the transport direction changes from the upward direction to the diagonally upward direction.
The aluminum film F is transferred from the driven roller 14 to the collar portion 12 of the former 11 without changing the transport direction, while remaining flat. That is, the aluminum film F is flatly and straightly transferred to the rear plate portion 12a without changing the direction at the rear end (bottom of the rear plate portion 12a) of the former. By passing through the driven roller 14, the aluminum film F is smoothly introduced into the former 11 without causing stress such as pulling or bending.

(Upper auxiliary pipe 15)
The upper auxiliary pipe 15 is a stainless steel cylindrical member having a diameter smaller than that of the cylindrical portion 13, and is fitted in the upper portion of the cylindrical portion 13. The upper end side of the upper auxiliary pipe 15 projects upward from the cylindrical portion 13. The upper auxiliary pipe 15 forms a slight gap with the cylindrical portion 13, and the aluminum film F is inserted through this gap. The aluminum film F slides through the gap between the upper auxiliary pipe 15 and the cylindrical portion 13.
The upper auxiliary pipe 15 may have a semi-cylindrical shape that opens in the front direction. The upper auxiliary pipe 15 can also function as the filling portion 40.

Since the upper auxiliary pipe 15 is fitted in the upper part of the cylindrical portion 13, the former 11 can smoothly convey the aluminum film F downward without causing bending (wrinkles) in the aluminum film F.
The upper auxiliary pipe 15 has a smaller diameter than the cylindrical portion 13, and a slight gap is formed between the upper auxiliary pipe 15 and the cylindrical portion 13. At the same time that the aluminum film F is transferred from the collar portion 12 to the cylindrical portion 13, it enters this gap. Therefore, when the aluminum film F is conveyed downward, the upper auxiliary pipe 15 prevents the aluminum film F from floating from the inner peripheral surface of the cylindrical portion 13. Therefore, it is possible to prevent wrinkles and the like from forming in the aluminum layer of the aluminum film F.

The lower auxiliary pipe 16 is a stainless steel cylindrical member having substantially the same diameter as the upper auxiliary pipe 15, and is fitted into the lower part of the cylindrical portion 13. The lower end side of the lower auxiliary pipe 16 projects below the cylindrical portion 13. The lower auxiliary pipe 16 forms a slight gap with the cylindrical portion 13, and the aluminum film F is inserted through this gap.
The lower auxiliary pipe 16 can also function as the filling portion 40.

<Vertical seal part 20>
The vertical seal portion 20 is arranged in front of the lower auxiliary pipe 16 of the bag making guide 10. The vertical seal portion 20 heat-welds the side edges of the aluminum film F folded into a tube shape through the former 11 along the transport direction (longitudinal direction).
The vertical seal portion 20 includes a pair of heater bars 22 and the like. The pair of heater bars 22 extend in the vertical direction, and are arranged in the left-right direction with the side edges of the aluminum film F interposed therebetween. The pair of heater bars 22 heat the side edges of the aluminum film F inserted in the gaps thereof. The pair of heater bars 22 heat-weld the side edges of the aluminum film F along the vertical direction to form a vertical seal T on the aluminum film F. As a result, the aluminum film F becomes a perfect tube shape.

<Film carrier 30>
The film transport unit 30 intermittently transports the aluminum film F downward. The film transport portion 30 is arranged below the vertical seal portion 20.
The film transport unit 30 includes four transport rollers 32 arranged on the front, back, left and right sides of the hopper pipe 42, which will be described later. The film transport unit 30 sandwiches the tubular aluminum film F in the front-rear direction with a pair of transport rollers 32. Then, the film transport unit 30 rotates the transport roller 32 to transport the tubular aluminum film F downward.

<Filling part 40>
The filling unit 40 charges (fills) the content X inside the tubular aluminum film F. The filling portion 40 includes a hopper pipe 42, a nozzle pipe 44, and the like.
The hopper pipe 42 is an elongated stainless steel cylindrical member having a diameter smaller than that of the upper auxiliary pipe 15 and the lower auxiliary pipe 16. The hopper pipe 42 is inserted into the upper auxiliary pipe 15 and the lower auxiliary pipe 16 of the bag making guide 10. A solid substance such as vegetables is put into the hopper pipe 42 as the content X. The content X is filled in the tubular aluminum film F via the hopper pipe 42.
The nozzle pipe 44 has an elongated straight shape, and is inserted along the central axis of the hopper pipe 42 to the lower side of the film transport portion 30. The nozzle pipe 44 is also inserted into the bag making guide 10, the upper auxiliary pipe 15, and the lower auxiliary pipe 16. The nozzle pipe 44 extends straight from above the bag making guide 10 to directly above the lateral seal portion 50.
The nozzle pipe 44 has an on-off valve (not shown) built in at the lower end. The nozzle pipe 44 is connected to a liquid feed pump (not shown) and discharges a liquid or fluid such as a beverage as the content X toward the tubular aluminum film F.
The filling unit 40 controls the on-off valve and the liquid feed pump to perform quantitative filling of the content X. Since the nozzle pipe 44 has an on-off valve (shutter), liquid dripping does not occur. Therefore, the content X is prevented from adhering to the film F (the portion where the horizontal seal Y is formed), and the sealing defect of the horizontal seal Y is prevented.
Since there is sufficient space above the bag making guide 10 (upper auxiliary pipe 15), the elongated straight nozzle pipe 44 can be installed in a vertical posture without bending.

<Horizontal seal part 50>
The horizontal seal portion 50 is arranged below the filling portion 40 (nozzle pipe 44), and the tubular aluminum film F is heat-welded in the lateral direction.
The horizontal seal portion 50 includes a pair of heater bars 52 and the like. The pair of heater bars 52 extend laterally and are arranged in the front-rear direction with the tubular aluminum film F interposed therebetween. The pair of heater bars 52 heat the tubular aluminum film F inserted in the gap.
The pair of heater bars 52 heat-weld the tubular aluminum film F over the lateral direction to form a horizontal seal Y on the aluminum film F. As a result, the aluminum film F becomes a complete bag. That is, the aluminum film packaging bag G is formed at the lower end of the tubular aluminum film F.

<Cutter part 60>
The cutter portion 60 is arranged downward of the horizontal seal portion 50 and cuts the horizontal seal Y formed on the tubular aluminum film F (aluminum film packaging bag G).
The cutter portion 60 is composed of a pair of cutter bars 62 extending in the lateral direction, and is arranged in the front-rear direction with the tubular aluminum film F interposed therebetween. The pair of cutter bars 62 cuts the horizontal seal Y in upper and lower halves after removing (cooling) the residual heat from the horizontal seal Y. As a result, the cutter portion 60 cuts off the aluminum film packaging bag G from the tubular aluminum film F.

[Manufacturing method of aluminum film packaging bag G containing contents]
Next, a process of manufacturing the aluminum film packaging bag G containing the contents by using the vertical bag-making filling and packaging machine 1 will be described.
The step of manufacturing the aluminum film packaging bag G containing the contents includes a film supply step S1, a film bending step S2, a vertical sealing step S3, a film transporting step S4, a filling step S5, a horizontal sealing step S6, and a bag body cutting step S7. ..

<Film supply process S1>
The film supply step S1 is a step in which the film supply unit 5 feeds out the aluminum film F from the raw fabric.
The film supply unit 5 conveys the aluminum film F upward toward the bag making guide 10.

<Film bending step S2>
The film bending step S2 is a step in which the bag making guide 10 bends the aluminum film F from a flat strip shape to a tube shape.
The aluminum film F supplied from the film supply unit 5 is first bridged over the driven roller 14. The driven roller 14 rotates smoothly as the aluminum film F is conveyed, and the aluminum film F is transferred straight onto the collar portion 12 of the former. The former 11 bends the aluminum film F into a tube shape while sliding the aluminum film F from the collar portion 12 to the cylindrical portion 13.
As described above, the shape of the former 11 is set (formed) so that non-uniform tension, stress concentration, and bending do not occur in the aluminum film F. Therefore, the aluminum film F is bent from a flat strip shape to a tube shape without wrinkles or cracks in the aluminum layer.

<Vertical sealing process S3>
The vertical sealing step S3 is a step of forming the vertical sealing T on the aluminum film F in which the vertical sealing portion 20 is folded into a tube shape.
The vertical seal portion 20 heat-welds the side edges of the aluminum film F inserted between the pair of heater bars 22. Then, the film transport portion 30 transports the aluminum film F downward, so that the vertical seal T is continuously formed without a gap.
The vertical sealing step S3 is performed when the aluminum film F is stopped. That is, the vertical sealing step S3 is performed at a different time from the film transport step S4. The vertical sealing step S3 is performed at the same time as the horizontal sealing step S6.

<Film transfer process S4>
The film transfer step S4 is a step in which the film transfer unit 30 intermittently conveys the tubular aluminum film F.
The film transport unit 30 rotates a plurality of pairs of transport rollers 32 to transport the aluminum film F downward.

<Filling step S5>
The filling step S5 is a step in which the filling portion 40 puts the content X into the inside of the tubular aluminum film F. The filling unit 40 discharges the liquid (content X) from the nozzle pipe 44 and supplies it to the inside of the aluminum film F.
Further, a solid substance (content X) is charged into the hopper pipe 42. The solid substance (content X) is supplied to the inside of the aluminum film F via the hopper pipe 42.
The inside of the aluminum film F is filled with the content X, which is a mixture of a liquid and a solid substance.
The filling step S5 is performed when the aluminum film F is being conveyed. That is, the filling step S5 is performed at the same time as the film transport step S4. The filling step S5 is performed when it is different from the vertical sealing step S3 and the horizontal sealing step S6. The filling step S5 is performed at the same time as the film transport step S4.

<Horizontal sealing process S6>
The horizontal sealing step S6 is a step in which the horizontal sealing portion 50 forms the horizontal sealing Y on the tubular aluminum film F filled with the contents X.
The horizontal seal portion 50 is formed by heat-welding a tubular aluminum film F over the lateral direction by a heater bar 52 to form a horizontal seal Y.
When the horizontal seal Y is formed, the tubular aluminum film F is sealed, and the lower side thereof becomes the aluminum film packaging bag G. The aluminum film packaging bag G is suspended from the lower end of the aluminum film F.

<Bag body cutting step S7>
The bag body cutting step S7 is a step in which the cutter portion 60 cuts off the aluminum film packaging bag G from the aluminum film F.
The cutter portion 60 cuts the lateral seal Y on the upper side of the aluminum film packaging bag G laterally by the cutter bar 62. That is, the horizontal seal Y is cut so as to be divided into two in the vertical direction. As a result, the aluminum film packaging bag G is separated from the lower end of the aluminum film F.

This completes the process of manufacturing the aluminum film packaging bag G containing the contents.
The vertical bag-making filling and packaging machine 1 repeats the process of manufacturing the aluminum film packaging bag G containing the contents. As a result, the vertical bag-making filling and packaging machine 1 continuously manufactures a plurality of aluminum film packaging bags G containing contents.

The vertical sealing step S3 may be performed at the same time as the film transport step S4 (that is, while transporting the aluminum film F downward). Then, when different from the vertical sealing step S3 and the film transporting step S4, the horizontal sealing step S6 is performed.
Further, the filling step S5 may be performed at a time different from that of the film transport step S4 (that is, the aluminum film F is stopped).
Further, the vertical sealing step S3, the filling step S5, and the horizontal sealing step S6 may be performed at the same time.
As described above, the timing of each step is appropriately changed and adjusted according to the type of the content X and the filling type (full filling, mixed filling, etc.).

[Second embodiment: vertical bag making filling and packaging machine 2]
FIG. 11 is a side view schematically showing a main part of the vertical bag-making filling / packaging machine 2 according to the second embodiment.
The same members and the like as in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The vertical bag-making filling and packaging machine 2 manufactures an aluminum film packaging bag G filled with contents X such as a liquid and a fluid (paste). The nozzle pipe 44 of the filling portion 40 does not have a built-in on-off valve, and the filling portion 40 may always continue to fill (load) the content X in the manufacturing process.
The vertical bag-making filling and packaging machine 2 (bag-making filling and packaging unit 8) includes a bag-making unit 70 and a pre-sealing unit 80 between the filling unit 40 and the horizontal sealing unit 50.

The shigoki portion 70 is arranged below (directly below) the tip (lower end) of the nozzle pipe 44.
The shigoki portion 70 includes a pair of driven rollers (shigoki roller 72) and the like. The shigoki roller 72 extends in the left-right direction and is arranged with the tubular aluminum film F sandwiched in the front-rear direction.
The pair of shigoki rollers 72 sandwich (handle) the aluminum film F into which the content X is charged from the front-rear direction and laterally. The pair of shigoki rollers 72 squeeze the aluminum film F to divide the contents X into upper and lower parts, and bring the aluminum films F into close contact with each other.
The pair of shigoki rollers 72 continue to hold the aluminum film F when the film transport unit 30 conveys the aluminum film F downward. That is, the pair of shigoki rollers 72 handle the aluminum film F relatively upward. As a result, the pair of shigoki rollers 72 create a portion where the aluminum films F are in close contact with each other in the front-rear direction.

The pre-seal portion 80 is arranged in the downward direction of the shigoki portion 70. A pre-seal P is formed at a portion where the aluminum films F are in close contact with each other.
The pre-seal P is formed by partially heat-welding a tubular aluminum film F over the lateral direction, and is later formed into the lateral seal Y by the lateral seal portion 50.
The pre-seal portion 80 includes a pair of preheater bars 82. The pair of preheater bars 82 extend laterally and are arranged in the front-rear direction with the tubular aluminum film F interposed therebetween. The pair of preheater bars 82 heat the tubular aluminum film F inserted in the gap. The preheater bar 82 has a lower heating temperature than the heater bars 22 and 52.
The preheater bar 82 forms a vertically striped preseal P on the aluminum film F. By forming the vertical striped thermal seal (pre-seal P) by bringing the aluminum films F into close contact with each other, the residual moisture can be pushed out in the vertical direction from the portion to be the horizontal seal Y.

When the pre-seal portion 80 forms the pre-seal P on the aluminum film F, the shigoki portion 70 separates the pair of shigoki rollers 72. Then, when the film transport portion 30 transports the aluminum film F and the pre-seal P moves downward, the horizontal seal portion 50 overlaps the pre-seal P to form the horizontal seal Y. The horizontal seal portion 50 can satisfactorily form the horizontal seal Y without being affected by the residual moisture.

As described above, since the vertical bag-making filling and packaging machines 1 and 2 use the bag-making guide 10, it is possible to manufacture a good aluminum film packaging bag G having no wrinkles or cracks in the aluminum layer.
The bag making guide 10 is set (formed) so that the former 11 does not cause uneven tension, stress concentration, or bending on the aluminum film F. Therefore, the aluminum film F can be bent from a flat strip shape to a tube shape without wrinkles or cracks in the aluminum layer.
Therefore, the vertical bag-making filling and packaging machines 1 and 2 and the bag-making guide 10 can manufacture an aluminum film packaging bag containing contents having good appearance quality and high functionality.

The film F may be a film having a plurality of aluminum layers. The film F may be made of only aluminum foil.
The film F is not limited to an aluminum film containing an aluminum layer, an aluminum foil, or the like. The film F may have another metal layer or other metal foil, or may be composed of only another metal foil.
The film F is not limited to the one including a metal layer or the like, and may have a layer in which wrinkles and cracks are easily formed. For example, the film F may be one containing a hard resin layer (that is, a film made of only plastic).

The layer (functional layer) that is prone to wrinkles and cracks is made of a material that is harder than the film material that is often used for food packaging. That is, the main material of the functional layer is a material having a higher Young's modulus than the film material often used for food packaging.
Film materials often used for food packaging are PE (polyethylene), ONY (biaxially stretched nylon), HDPE (high density polyethylene), LDPE (low density polyethylene), LLDPE (linear low density polyethylene), PET (PET). Biaxially stretched polyester), OPP (biaxially stretched polypropylene), CPP (non-stretched polypropylene). These film materials are referred to as "common flexible packaging film resin".

[Functional film]
Instead of the film F having an aluminum layer, another functional film may be used.
As a functional film, there is a film in which another material (resin or the like) is laminated on paper or non-woven fabric. That is, this functional film has a functional layer including paper and non-woven fabric, and is excellent in breathability, moisture retention and the like.

The functional layer includes materials other than film materials (commonly used flexible packaging film resin) that are often used in food packaging. That is, the functional layer contains a material different from PE, ONY, HDPE, LDPE, LLDPE, PET, OPP, CPP and the like.

Paper includes kraft paper, woodfree paper, pure white, hosho paper, glassine paper, synthetic fiber paper, and the like. The non-woven fabric (JIS-L0222, ISO9092, ISO / DIS 11224) is made of polypropylene, polyester, nylon, a composite material or the like.
Paper and non-woven fabric are often used for the purpose of giving the packaging bag a sense of quality and elasticity (toughness). In addition, it is often used for the purpose of reducing the resin usage fee.
For example, a cold insulating agent is enclosed in the packaging bag containing the non-woven fabric layer. Even if dew condensation occurs on the surface of the packaging bag, the dew condensation can be absorbed by the non-woven fabric layer. Further, for example, a packaging bag made of only a non-woven fabric layer is filled with chicken sardines, dried bonito flakes, and the like. You can boil the soup stock in the packaging bag and then throw it away.
For example, pharmaceutical products, sugar, salt, flour powder, confectionery, tea and the like are enclosed in the packaging bag containing the paper layer.

The functional film may be a film consisting only of paper or non-woven fabric. An adhesive layer is arranged on a part of the surface of the film, and the films are adhered to each other by the adhesive layer to make a bag.
The functional film may have another functional layer containing a metal such as aluminum in addition to the functional layer containing paper or a non-woven fabric.

Since the vertical bag-making filling and packaging machines 1 and 2 used the bag-making guide 10, a good packaging bag having no wrinkles or cracks in this functional layer can be manufactured from a functional film having a functional layer containing paper or non-woven fabric. can.

The present invention is not limited to the above-described embodiment, and includes various modifications of the above-mentioned embodiment without departing from the spirit of the present invention. That is, the specific shape, configuration, and the like given in the embodiment are merely examples, and can be appropriately changed.

For example, in the above-described embodiment, the case where the aluminum film packaging bag G is a pillow-shaped packaging bag has been described, but the present invention is not limited to this. It suffices that the aluminum film packaging bag G is made by the bag making guide 10, and the type of the seal or the like is arbitrary.

The content X may be a liquid, a fluid (paste), or a solid. The content X may be a case where the liquid or the fluid contains a solid. The content X may be a powder.

The former 11 (collar portion 12, cylindrical portion 13) is not limited to stainless steel, and may be formed of other metal, plastic, or the like. The surface of the collar portion 12 and the inner peripheral surface of the cylindrical portion 13 may have a plurality of irregularities, and the collar portion 12 and the cylindrical portion 13 may have a plurality of ventilation holes.

In the former 11, the values of the angle α, the angle β, and the ratio H / R may be appropriately changed / adjusted according to the characteristics of the aluminum film F and the like. The values of angle α, angle β, and ratio H / R are appropriately changed and adjusted according to the type and state (temperature) of the content X, the filling amount (weight), and the filling type (full filling, mixed filling, etc.). You may.

The upper auxiliary pipe 15 and the lower auxiliary pipe 16 may be connected to form a single pipe. This single pipe may be used as the hopper pipe 42.

1,2 Vertical bag filling and packaging machine
10 Bag making guide
11, 11A, 11B, 11C former
12 Collar
12a Rear plate
12b Front plate
13 Cylindrical part
14 driven roller
15 Upper auxiliary pipe (auxiliary pipe)
16 Lower auxiliary pipe
20 Vertical seal part
30 Film carrier
40 Filling part
42 hopper pipe
44 Nozzle pipe
50 Horizontal seal part
60 Cutter part
70 Shigoki part
80 Pre-seal part
F Aluminum film (film)
G Aluminum film packaging bag with contents (bag body)
T vertical sticker
Y horizontal sticker
P pre-seal
X contents

Claims (24)

A bag making guide that bends a strip of film into a tube.
The sailor-colored collar that introduces the film, and
A cylindrical portion that connects to the inner edge of the collar and extends downward,
Equipped with
The collar portion is located upstream and has a flat triangular rear plate portion that is inclined with respect to the horizontal plane.
A bag making guide having an angle α of the rear plate portion with respect to the horizontal plane of 5 ° or more and 40 ° or less. The bag making guide according to claim 1, wherein the angle α is 10 ° or more and 30 ° or less. The bag making guide according to claim 2, wherein the angle α ° is 12 ° or more and 20 ° or less. The bag making guide according to any one of claims 1 to 3, wherein the angle β of the apex angle of the rear plate portion is 80 ° or more and 140 ° or less. The bag making guide according to claim 4, wherein the angle β is 90 ° or more and 120 ° or less. The bag making guide according to claim 5, wherein the angle β is 100 ° or more and 110 ° or less. The bag making guide according to any one of claims 1 to 6, wherein the ratio H / R of the height H of the collar portion to the radius R of the cylindrical portion is 4 or more and 16 or less. The bag making guide according to claim 7, wherein the ratio H / R is 6 or more and 13 or less. The bag making guide according to claim 8, wherein the ratio H / R is 8 or more and 10 or less. The collar portion has a pair of front plate portions connected to the rear plate portion and the cylindrical portion.
The bag making guide according to any one of claims 1 to 9, wherein the front plate portion is formed by bending a bender. The bag making guide according to any one of claims 1 to 10, further comprising a driven roller that is closely arranged or closely arranged along the bottom of the rear plate portion to introduce the film into the collar portion. The bag making guide according to any one of claims 1 to 11, further comprising an auxiliary pipe arranged inside the cylindrical portion to form a gap between the cylindrical portion and the film so that the film can slide through the cylindrical portion. The bag making guide according to any one of claims 1 to 12, wherein the film has a functional layer. The bag making guide according to claim 13, wherein the functional layer contains aluminum. The bag making guide according to claim 13, wherein the functional layer includes paper. The bag making guide according to claim 13, wherein the functional layer includes a non-woven fabric. The bag making guide according to claim 13, wherein the film comprises only a functional layer. The bag making guide according to any one of claims 13 to 17, wherein the main material of the functional layer has a Young's modulus higher than that of a conventional flexible packaging film resin. A film supply unit that supplies strip-shaped film, and
A bag making guide that changes the transport direction downward while bending the film into a tube shape.
A vertical sealing portion that heat-welds the side edges of the film, and
A film transport section that transports the film downward, and
A filling part for putting the contents inside the film, and
A horizontal seal portion that heat-welds the film in the width direction to form a bag body,
A cutter that separates the bag from the film,
Equipped with
A vertical bag-making filling / packaging machine using the bag-making guide according to any one of claims 1 to 18 as the bag-making guide. The vertical bag-making filling and packaging machine according to claim 19, wherein the filling portion includes a hopper pipe that is inserted through the bag-making guide and into which a solid substance is charged as the content. The vertical bag-making filling and packaging machine according to claim 19 or 20, wherein the filling portion is inserted through the bag-making guide and includes a nozzle pipe that discharges a liquid or a fluid as the contents. The 21st aspect of the present invention, wherein the nozzle pipe has a shape extending straight from above the bag making guide to directly above the lateral seal portion, and has an on-off valve built in at the lower end to quantitatively fill the contents. Vertical bag filling and packaging machine. A shigoki portion that is arranged directly below the filling portion and handles the film by sandwiching it in the lateral direction.
A pre-seal portion that partially heat-welds the films that are handled and adhered to each other by the shigoki portion in the width direction.
The vertical bag-making filling and packaging machine according to any one of claims 19 to 22. The film supply process for supplying strip-shaped film and
A film bending step of bending the film into a tube shape and changing the transport direction downward.
A vertical sealing process in which the side edges of the film are heat-welded to each other,
The film transport process for transporting the film downward and
The filling process of charging the contents into the film and
A horizontal sealing step of forming a bag by heat welding the film in the lateral direction,
A bag body separating step of separating the bag body from the film,
Have,
A method for manufacturing a film packaging bag containing contents, using the bag making guide according to any one of claims 1 to 18 in the film bending step.

Images