JPH0471771B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention involves making a pouch from a sheet-like packaging material made by pasting together a plastic sheet, aluminum foil, etc. in a sterile state, and filling the pouch with objects one after another. The present invention relates to a pre-sterilization method and a pre-sterilization device for an aseptic bag making and filling device for filling.

[Conventional technology and problems]

Generally, an apparatus for automatically filling liquids such as soft drinks, juices, milk, or other viscous substances into pouches formed from film materials under aseptic conditions is vertically shaped as shown in FIG. That is, a filling liquid is supplied from a filling nozzle 2 into a cylindrical bag 1, an appropriate position of the bag 1 is adhered by an adhesive device 3, and then the adhesive part is cut with a cutter 4 to take out the filled product 5. I have to.

Such a vertical filling device is designed to adhere and cut the film with the liquid 6 filled in the cylindrical bag 1, so that the filling liquid gets into the adhesive part and the adhesion is sufficiently performed. In addition, it is impossible to fill with a liquid containing solids because the solids are caught in the bonded portion, making it impossible to bond.

Therefore, the applicant has developed an in-line bag-making type aseptic filling device that aseptically makes pouches from plastic sheets and then fills the pouches with a filling nozzle while holding the pouches in a conveying chain. are doing.

In this aseptic filling device, a continuous sheet wound into a roll is immersed in a sterilizing layer of two H _{2 O} liquids, and the continuous sheet is folded up in a sterile chamber and placed vertically in two layers. Either the so-called vertical method, in which pouches are made by bottom sealing, side sealing, and cutting, and then the pouches are automatically filled while being conveyed, or the continuous sheet is immersed in a H ₂ O ₂ sterilization bath, and then the pouch is filled. A so-called horizontal method is considered, in which a pouch is made by cutting the center longitudinally and overlapping the cut pieces horizontally, and then filling the pouch after turning the pouch from a horizontal state to a vertical state.

However, in these in-line bag making type aseptic filling devices, there are two
A stack of sheets remains, and this sheet is 2
Since the sheets are stacked one on top of the other, there is a problem in that it is difficult to completely pre-sterilize the joint surfaces.

[Purpose of the invention]

In view of the above, the present invention has been developed to completely pre-sterilize the bag-making section while easily discharging the two-ply continuous sheet remaining in the bag-making section of an in-line bag-making-type aseptic filling device. It is an object of the present invention to provide a pre-sterilization method and a pre-sterilization device for an aseptic bag-forming-filling device that can perform the following steps.

[Structure of the invention]

The purpose of this was to pass the continuous sheet through a sterilization tank, then feed it into the bag making section in two stacks to make a pouch, and then transport the pouch through the filling section while filling the pouch with the filler. In a pre-sterilization method for a bag-making type aseptic filling device, the bag-making section is joined to the filling section, the pouches made in the bag-making section are passed to the filling section, and a continuous sheet in the bag-making section is manufactured during pre-sterilization. A pre-sterilization method for pre-sterilizing the bag-making section while drawing out the sheet through the wall of the bag section, passing through the sterilization tank, and discarding the contaminated sheet located inside the bag-making section.
In a bag-making type sterile filling device which stacks and feeds pouches and fills the pouch with a filling material while conveying the pouch within a filling section, the bag-making section is joined to the filling section; This is achieved by a pre-sterilization device in which a take-up roll is provided outside the wall of the bag making section in the running direction of the continuous sheet, and an opening is provided in the wall for the continuous sheet to pass through.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 2 to 13.

2 to 4, the filling device M according to the present invention includes a bag making section 10 for making pouches from a continuous sheet wound into a roll, and a filling device M for filling the pouches made in the bag making section 10. Filling part 11,
and a sterilization tank 12 for sterilizing the continuous sheet.

A sterilization tank 12 is adjacent to the bag making section 10, and a support arm 1 extending in the horizontal direction is provided in the sterilization tank 12.
A continuous sheet S from a roll R rotatably supported by rollers 3 and 13 is fed through guide rollers 14, 14, and 14. The sheet S is immersed in a hydrogen peroxide solution (H ₂ O ₂ ) stored in the sterilization tank 12 , and extends vertically upward via a bottom roller 15 provided at the bottom of the sterilization tank 12 . It is dried by the provided drying device 16 and sent into the bag making section casing 17.

As shown in FIG. 5, the drying device 16 is provided with scraping nozzles 18, 18 for blowing cold air downward in order to scrape off the H ₂ O ₂ liquid on the sheet, and is provided above the nozzle 18 to blow hot air. It has drying nozzles 19, 19 for blowing out the water, and heating rollers 20, 20 provided above the nozzle 19. The drying device 16 is located in a sterile chamber 21, and the air in this chamber 21 is discharged through an outlet 22.
is discharged from.

Sterile chamber 2 inside the bag making unit casing 17
At the left end in FIGS. 2 and 3 of 3, there is a stacking device 24 for cutting the sheet (film) S fed from the sheet roll R in the longitudinal direction at the center in the width direction to form two sheets. It is provided.

In the overlapping device 24, as shown in FIGS. 6 and 7, two separating rolls 25, 2
5 are arranged in a chevron shape in a plan view, and a cutter ₂₆ is provided at the central joining part _of the sheets. The device 24 is wound again by winding the pull-out rollers 27, 27 disposed in the feeding direction.
leading to the center of The left and right shredded pieces S ₀ , S ₁
are overlapped by central overlapping rollers 28, 28, and then passed through drive rollers 29, 29 and then
The rollers pass through a dancer roller 31 provided between two guide rollers 30, 30, and further pass through a lowermost guide roller 32 so that they are guided horizontally in an overlapping state.

As shown in FIG. 8, bottom sealers 33, 3 are applied along the flow direction of the two stacked cut pieces S ₀ and S ₁ .
3. Bottom cooler 34, 34, side sealer 3
5, 35, side coolers 36, 36 and a notch punching member 37 are provided. The bottom sealer 33 and the side sealer 35 are equipped with a heater,
The cut pieces S ₀ and S ₁ are sandwiched from above and below to locally melt and bond them together, and the bottom cooler 34 and the side cooler 36 cool the bottom seal portion and the side seal portion, respectively, and peel them off again. Make sure that there are no

Further, the notch punching member 37 is a knife 37a.
As shown in FIG. 9, this knife 37a forms a notch n across the cutting line _l0 to form a cut when opening the pouch.

Next to _the notch punching member ₃₇ , as shown in FIG. Cutters ₃₉ , 39 extending in the width direction of the pieces S0 _{, S1} are provided, and when the horizontal pieces _S0 , _S1 are cut by the cutters 39, a pouch P is obtained.

An operation panel 40 is provided on the bag making unit casing 17.
The top plate of the casing 17 is provided with air supply ports 41, 41 for supplying sterile air into the chamber 23, and the bottom plate 42 inside the chamber 23 is provided with air discharge ports 43, 43 and a drain. Ports 44, 44 are provided.

The front end in the longitudinal direction of the bag making section 10 (FIGS. 2 and 3)
(right end of the figure), as shown in FIGS. 11 and 12, when pre-sterilizing the inside of the chamber 23,
A sheet winding roll 50 is provided for discharging contaminated sheets S ₀ and S ₁ that have passed through the sterilization tank 12 and are present in the chamber 23 to the outside of the chamber 23 .
This roll 50 is supported by left and right support arms 51 and can be manually rotated by a handle 52. A ratchet mechanism (not shown) is provided between the support arm 51 and a rotating shaft 53 to which the handle 52 is connected. The rotating shaft 53 is prevented from rotating in reverse. The ratchet mechanism also has a ratchet release handle 54 that allows the rotating shaft 53 to be reversed as required. The rotating shaft 5
Disk plates 50a, 50a are fixed to both ends of the disk 3, and sheets S ₀ and S ₁ are wound between these disk plates 50a.

A window 55 is provided in the front wall of the chamber 23, and a slit 56 is provided below the window 55 for discharging the sheets S ₀ and S ₁ , and this slit 56 is opened and closed by a closing plate 57. , this closing plate 57 is connected to the left and right guide members 58, 58.
The closing plate 57 is slidably held between the
A handle 59 is attached to the center of the closing plate 57 for holding the hand when moving the closing plate 57.

A guide roll 60 is provided below the slit 56.
is arranged horizontally, and this guide roll 60 is provided with an odometer 61, and this odometer 61 determines the rotation of the guide roll 60, that is, the sheet.
The discharge lengths of S ₀ and S ₁ are detected.

An opening/closing window 62 is provided on the front end side wall of the chamber 23.
is formed, and when this opening/closing window 62 is opened, the sheet S ₀ ,
Work such as discharging S ₁ out of the slit 56 is performed. The chamber 23 is located at the bottom of the opening/closing window 62.
A release handle 63 is provided for releasing the inner feed roll 38 from the sheets S ₀ , S ₁ , and the release handle 63 separates one of the feed rolls from the sheets S ₀ , S ₁ and releases the feed roll 38 from the sheets S 0 , S 1 . Twist the sheet so that it can be pulled out.

The bag making section 10 and the filling section 11 are arranged in parallel with each other, and a pouch delivery device 70 as shown in FIG. 10 is provided at the joint between the two sections 10 and 11. The pouch delivery device 70 includes a clip 7
1, the swing arm 72 rotates by a known mechanism to move the pouch p from the horizontal position to the vertical position and transfers the pouch to the claw 88 of the conveyance chain 90.

The filling section 11 has a casing 100 extending in the longitudinal direction as shown in FIGS. 2 and 3, and clean air inlets 102, 102 are attached to the top plate 101 of the casing 100,
An air outlet 10 is provided on the bottom plate of the casing 100.
3, 103 and drain ports 104, 104 are provided. A filling machine 105 is attached to the approximate center of the top plate 101, and the filling machine 105 has a front filling part 106 and a rear filling part 107, both of which are connected by a connecting pipe 108. 10
A filling nozzle 109 hangs down from 6 so as to be extendable and retractable in the vertical direction.

The conveyance chain 90 has left and right sprockets 1.
10, 111, and a drive device for driving these sprockets 110, 111 is installed in a machine room 112 on the rear side of the line where pouches P are conveyed. The pouch P held by the claw 88 of the conveyance chain 90
The suction cups 113, 113 are movable in the direction perpendicular to the conveyance direction during conveyance.
It is opened to the left and right by the . When the pouch P is opened and reaches the filling position, the filling nozzle 1
09 descends and fills the pouch P with a predetermined amount of filling from the opening. The opening of the filled pouch P is then impulse-sealed by top sealers 114, 114, and the pouch P is discharged to the outside through a chute port 115 provided on the side surface of the filled portion casing 100.

[Action of the invention]

In this apparatus, it is necessary to pre-sterilize the inside of the apparatus before filling the pouch P with the filler.
Release the roller located above the handle 63.
It is raised by operating the . Then,
The cutter located above the sheet cutting cutter 39 is raised to the top dead center and locked there.
In this state, the stacked sheets S 0 and S 1 are inserted through the opened window 62 and the closing plate 57 is raised to remove the stacked sheets S ₀ and S ₁ through the opened slit (opening) 56 .
and pull it out to the outside. Pulled out sheets S ₀ , S ₁
Then, the winding roller 50 is manually rotated while the window 62 is closed and the drive roller 29 below the overlapping device 24 is rotated.

The pre-sterilization device is equipped with an H ₂ O ₂ spray nozzle, a spray device for sterilizing each pipe, a heater and a blower for drying the chamber 23 with hot air, and the inside of the chamber 23 is sterilized with H 2 O 2 after sterilizing the pipes. Sterilize with ₂ O ₂ nozzles. While sterilizing the inside of the chamber 23 in this manner, the take-up roll 50 is rotated while watching the odometer 61 to discharge the sheet contaminated inside the chamber 23 past the sterilization tank 12 to the outside of the chamber 23. Further, in this embodiment, the sheet is manually discharged out of the chamber 23, but a motor may be connected to the take-up roll 50 to automatically rotate the take-up roll 50. When the contaminated sheet is discharged, the cutter 39 is unlocked to cut the sheet, and after the sheet preceding the cutting position is completely wound onto the winding roll 50, the closing plate 57 is lowered to close the slit 56. and begin normal bag making and filling operations.

In addition, at the same time as the pre-sterilization of the bag making section 10, the filling section 1
1 is also pre-sterilized by H ₂ O ₂ spray from the H ₂ O ₂ spray nozzle.

In this way, if the bag-making section 10 and the filling section 11 are connected in parallel with their ends overlapping each other, two stacked sheets can be exposed to the outside during pre-sterilization in the bag-making section 10. Since it can be easily discharged and contaminated sheets can be disposed of, a completely sterile state can be achieved.

In the above-mentioned embodiment, a horizontal method was described in which the sheet is fed _horizontally , but as shown in _FIG . The present invention can also be applied to the case of a rigid pouch in which the pouch is made using the bottom sealer 208, side sealer 209, and cutter 210 (having a blade 211) while feeding the pouch. In that case, during pre-sterilization, the vertical guide bar 212 and the horizontal guide bar 213
S ₂ is transferred to a horizontal state so that it can be wound around the winding roll 50.

Note that the continuous sheet may be taken out from the top plate of the bag making section 10. In this case as well, guide rolls and take-up rolls are installed in accordance with the flow of the continuous sheet.

〔Effect of the invention〕

As explained above, in the present invention, the filling section and the bag-making section are arranged in parallel with their ends overlapping each other, and a take-up roll is arranged outside the chamber on the end face of the bag-making section to prevent contamination. Since the sheet is wound around a take-up roll and discharged to the outside of the chamber, the contaminated sheet can be easily discharged to the outside and pre-sterilization can be completely performed.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a conventional vertical filling device, and FIG. 2 is a plan view of an aseptic bag-forming and filling device according to the present invention.
Fig. 3 is a front view of the same, Fig. 4 is a side view of the same, Fig. 5 is a schematic diagram of the drying device, Fig. 6 is a plan view of the sheet stacking device, Fig. 7 is a front view of the same, Fig. 8 9 is a schematic diagram of the inside of the bag making section, FIG. 9 is an explanatory diagram of the notch forming position, FIG. 10 is a perspective view of the delivery device, FIG. 11 is a perspective view of the joint between the bag making section and the filling section, and FIG. 12 is FIG. 13 is a diagram showing the rear configuration of the bag making section, and is a schematic diagram of the vertical bag making method. 10... Bag making section, 11... Filling section, 12... Sterilization tank, 16... Drying device, 24... Layering device, 23... Chamber, 50... Winding roll,
56...Slit, 70...Pouch delivery device,
90... Conveyance chain, 109... Filling nozzle.

Claims (1)

[Claims] 1. After the continuous sheet is passed through a sterilization tank, a pouch is made by feeding the continuous sheet in two layers into a bag making section, and the pouch is conveyed within a filling section while filling the pouch with a filling material. In the pre-sterilization method for the bag-making-type aseptic filling device, the bag-making section is joined to the filling section, and the pouches made in the bag-making section are passed to the filling section, so that the continuous sterilization inside the bag-making section is carried out during pre-sterilization. A pre-sterilization method for an aseptic bag-forming and filling apparatus, characterized in that the sheet is pulled out through the wall of the bag-making section, passed through a sterilization tank, and the contaminated sheet located inside the bag-making section is discarded while the bag-making section is pre-sterilized. 2. A bag-making type in which a continuous sheet is passed through a sterilization tank, then two sheets are stacked and sent into a bag-making section to make a pouch, and the pouch is transported within a filling section while filling the pouch with the filling material. In the aseptic filling device, the bag making section is joined to the filling section, a winding roll is provided outside the wall of the bag making section in the running direction of the continuous sheet, and an opening is provided in the wall for passing the continuous sheet. A pre-sterilization device for aseptic bag making and filling equipment featuring: