JPH07187202A - Self-standing pack with poring stopper, and method and device for its manufacture - Google Patents

Abstract

PURPOSE:To obtain a self-standing pack having a pouring stopper in the center at the top, which is easy to handle, by a method wherein a self-standing bag with a filling opening stop is held upright, the bag is opened at the filling opening and, filled with material, the filling opening is provided with a pouring stopper, and the side of a flange of the pouring stopper is fused to the inner surface at the filling opening. CONSTITUTION:A self-standing bag on a magazine 4 is gripped by grippers 5 with the filling opening atop, brought to a specified position, and held upright. Then the rotation of a table moves the self-standing bag to an opening process, where, after opening the self-standing bag a little by applying vacuum suction cups 6 to the two sides, air is blown from an air-blowing nozzle 7 into the self-standing bag to open the filling opening. The self-standing bag with the filling opening now open is filled with material by a measuring feeder 8 at the filling process. After the filling, the filling opening, which is now open, is provided with a pouring stopper 9 and the side of a flange of the pouring stopper 9 is fused to the filling opening by the use of a fusing device 10. Through cooling of the fused part by a cooling device 11 the resulting self-standing pack with a pouring stopper is discharged. This method enables the filling to be carried out speedily and hence improves the productivity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-supporting package with a pouring plug filled with a liquid substance, a method for producing the package, and an apparatus for producing the same.

[0002]

2. Description of the Related Art Products conventionally sold in glass or hard plastic bottles, for example, liquid or slurry products such as milk, soy sauce, oil, cosmetics, etc.
Recently, it has come to be packaged and sold in a paper carton, a thin plastic sheet bottle, and a plastic film bag (pouch). Paper cartons and thin plastic bottles are provided with a pouring stopper, and after each time the required amount is used from the pouring outlet, the pouring stopper is closed and stored. In addition, pouch bags with outlet plugs are also used, and in order to facilitate handling at the time of use, a package in which the contents are filled in the bag stands on a flat surface such as a table is manufactured. There is. As a self-supporting package with a pouring plug, a package having a plug in the center right above the package is preferred, and at present, it is shown in Fig. 1 (Japanese Utility Model Publication No. 60-139754) and Fig. 2 (Actual model Sho 63-76653). A self-supporting package with a spout is manufactured. However, FIG. 1 and FIG.
In the case of the self-supporting package, the bulkiness of the pouring stopper 1 causes a problem in the self-supporting bag feeding process, and the opening 2 of the pouring stopper 1 is usually small and the speed of filling the contents from this opening is remarkable. There is a problem that it is difficult to increase productivity late. In order to increase the filling speed and improve the productivity, a method is also provided in which a large filling port 3 is provided separately from the spout 1 as shown in FIGS. 3 and 4, and after filling the contents, the filling port is welded and hermetically sealed. Has been done. However, in this case as well, the bulkiness of the pouring plug poses a problem in the supply process of the self-supporting bag, and the pouring cap cannot be provided right above the self-supporting package, thus limiting the shape. Occurs.

[0003]

SUMMARY OF THE INVENTION The present invention is intended for consumers who have good workability, high filling speed and high productivity, and whose spout is located at the center right above the container like a normal glass bottle. An object of the present invention is to provide an easy-to-handle self-supporting package, and a method and apparatus for manufacturing the self-supporting package.

[0004]

[Means for Solving the Problems] The present inventors have diligently studied a method for efficiently producing a self-supporting package with a pouring stopper that is easy to handle, and filled the contents from a large filling port just above the bag. After that, it was found that by attaching a pouring plug to the filling port, a self-supporting package which can be easily handled without impairing the productivity can be produced, and the present invention has been completed. That is, the present invention comprises the following items. (1) In the method for producing a self-supporting package with a pouring stopper, (a)
Supplying and vertically holding a self-supporting bag having a filling port for the contents, (b) opening the filling port of the self-supporting bag, (c) filling the self-supporting bag with the contents And (d) supplying a pouring plug having a pouring outlet with a plug on a boat-shaped flange to a filling port, and (e) welding the side surface of the pouring flange to the inner surface of the filling port. , And the order of each process is (a),
(b), (c), (d), the manufacturing method of the self-supporting package with a pouring stopper which has the content which is (e). (2) A self-supporting package with a pouring stopper having the content according to item 1, which has a step of continuously producing a self-supporting bag having a filling port for the content directly above from a long material web. Body manufacturing method. (3) The self-supporting bag has a constricted portion on the upper part or the constricted part and a linear rib on the surface of the bag body, so that the bag is self-supporting up to the upper part. Of manufacturing self-supporting package with a cover. (4) (a) A mechanism for supplying and vertically holding a self-supporting bag having a filling port for the contents, (b) A mechanism for opening the filling port of the self-supporting bag, (c) The self-supporting bag A mechanism for filling the contents into
(d) a mechanism for supplying a pouring spout having a spout with a plug on a boat-shaped flange to a filling port, (e) a mechanism for welding the side surface of the spout flange to the inner surface of the filling port, and Each mechanism
The manufacturing apparatus of the self-supporting package with a pouring stopper which has the content which combined in order of (a), (b), (c), (d), (e). (5) Self-supporting package with pouring plug in which the self-standing bag having the filling port directly above is filled with contents, and then the pouring stopper is supplied to the filling port and the side surface of the pouring stopper flange is welded to the inner surface of the filling port. . (6) The self-supporting bag with a spout according to item 5, wherein the self-supporting bag is self-supporting up to the upper part by providing a constricted part at the upper part or a constricted part and a linear rib on the bag surface. body.

In the self-supporting package of the present invention, the self-supporting bag is filled with the contents from the filling port right above, and then the outlet plug is supplied to the filling port so that the side face of the outlet flange is welded to the inner face of the filling port. It is composed of a self-supporting package with a tap, and is characterized in that the tap is attached after filling the contents. Since the self-supporting package of the present invention can be filled from the filling opening right above the large opening, the contents can be filled at the same filling speed as that of the conventional pouch without a plug or the bag with the plug shown in FIGS. Can be filled. As the self-supporting bag used here, a self-supporting bag can be preferably used by providing a constricted portion on the upper part or the constricted part and a linear rib having unevenness on the surface of the bag body.

The self-supporting bag used in the present invention comprises a body forming part and a bottom forming part made of a plastic film. The plastic film is not particularly limited and various ones can be used, for example, polyolefins such as polyethylene and polypropylene, chlorine-containing polyolefins such as polyvinyl chloride, aromatic vinyl polymers such as polystyrene, and polyurethane. Polyester such as polyethylene terephthalate, polyamide such as nylon, polycarbonate, polyarylate, polyether, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer and the like, copolymerization with a monomer copolymerizable with ethylene Examples include coalescing and ionomers. These substances can be used alone or in combination of two or more. When the side part and the bottom part of the bag are different, the plastic films may be the same kind of plastic or different plastics, but the same kind is adhered. It is preferable because it is easy to do. The plastic film may have a single layer, but it is preferable that it has a multi-layer structure of two or more layers in terms of processing of the self-supporting bag. As the multi-layer plastic film having two or more layers, a multi-layer film in which various plastic films such as the above-mentioned materials are laminated can be used, but a multi-layer plastic film in which plastic films having different melting points are laminated is preferable. In a multi-layer plastic film having different melting points, a plastic film having a low melting point is welded to the inner layer side of the package. The difference in melting point is not particularly limited, but preferably has a difference of 10 ° C or more, particularly preferably has a difference of 20 ° C or more, and further 30 ° C.
Those having the above differences are preferable. Examples of the plastic film having a low melting point include polyolefin films such as polyethylene and polypropylene, and examples of the plastic film having a high melting point include engineering plastic films such as oriented nylon 6-6 and oriented polyethylene terephthalate.

In order to impart a barrier property to the plastic film, the intermediate layer is saponified with aluminum foil or a copolymer of ethylene and vinyl acetate (EVO).
H), a plastic film using vinylidene chloride or the like can also be used. It is also possible to use a flexible laminated film in which a film made of a material other than plastic such as aluminum or paper is laminated on a plastic film. Further, a printed plastic film can also be used. The self-supporting bag used in the present invention is composed of a body forming portion and a bottom forming portion, and the bottom forming portion is bent and is superposed in a substantially W shape by the body forming portion and the bottom forming portion,
It has a side seal line that forms a bag side part so that the width of the upper part of the bag is narrower than the width of the bag of the bent part of the bottom forming part,
The side seal line has a constricted part in the middle of the height of the package when it is self-supporting, the height is almost the same as the constricted part, and the position inside the side seal line is more than 10% of the bag width. It is preferable that the body forming portion is provided with a linear groove and a linear rib each having an inwardly protruding substantially arcuate curved portion. The size of the filling port is preferably 60 mm or more in a normal self-supporting bag in order to increase the filling speed and increase the productivity.

An example of the shape of the self-supporting bag preferably used in the present invention will be described. In FIG. 7, a side seal line 12 that constitutes a side portion of the self-supporting package is provided by heat welding on a flat body forming portion. The side seal line 12 on the side portion of the self-supporting bag is provided with a constricted portion sandwiched between points B and C at the intermediate portion thereof. The width of the bag is narrower at the point A at the constricted portion than at the point C, and the point A is deviated to the inside of the bag from the straight line connecting the points B and C, and the deviation is 4 bag widths. ~ 12%. This self-supporting bag has a height that is about 10% lower than the height of the bag from the constricted portion A point,
In addition, a pair of linear grooves and linear ribs 16 having a substantially arc-shaped curved portion projecting inward are provided symmetrically inward from the side seal line 12 at a position of about 30% of the bag width. ing. The pair of linear grooves and the linear ribs are provided on both the front and back trunks, respectively. Since the linear groove and the linear rib 16 are easily bent, when the self-supporting bag is filled with the contents, the linear groove is bent to form an end portion of the concave portion due to the constricted portion, and the constricted portion is formed. The resulting recess can be reliably formed in a predetermined shape, and extremely excellent self-sustaining stability can be obtained. Further, since the concave portion can be formed at a predetermined position in a predetermined shape, it is possible to obtain extremely excellent shape retention.

On the other hand, the bottom component folded in the W shape has a heat seal line 1 in addition to the side seal line 12 so that the bottom is substantially hexagonal when the self-supporting bag is filled with contents.
3 and the heat seal wire 14 are welded together. The length between the bent portion 15 and the bottom end may be appropriately selected according to the required characteristics of the self-supporting package, but is 10 to 10 times the width of the self-supporting bag.
40% is preferable. A filling port is provided at the upper end of the self-supporting bag, and the width of the opening is about 5 times the width of the bent portion at the bottom.
It is 0%. In FIG. 5, the self-supporting bag on the magazine 4 is moved to a predetermined position on the table by the bag feeding device and held substantially vertically. The self-supporting bag means a bag which becomes a packaging body which maintains a constant shape when filled with the contents and is self-supporting on a flat surface. The method of holding the self-supporting bag is not particularly limited, and it can be held by sandwiching both ends of the upper part of the bag with the gripper 5, for example. If necessary, a step of printing on the bag may be added before or after this supplying step. The freestanding pouch is then moved to the opening process by rotating the table. The opening step of the present invention can be performed, for example, by slightly opening both sides of the self-supporting bag using the vacuum suction cups 6 and then blowing air into the air blowing nozzle 7. The self-supporting bag with the filling port opened then moves to the filling process. The filling process of the present invention can be provided in multiple stages as required. The liquid material used in the present invention is not particularly limited to a low-viscosity liquid to a high-viscosity paste material, and examples thereof include detergents, salad oils, cosmetics, tomato ketchup, mayonnaise, honey, and adhesives. A solid may be added as long as it can be uniformly dispersed or dissolved in the liquid to be filled at the same time. In the filling step, if necessary, a predetermined amount of liquid, paste, solid or the like is filled using a generally known quantitative supply device 8. The self-supporting package that has been filled is sent to the spout plug supply step.

In the pouring plug supplying step of the present invention, a pouring plug 9 having a spout with a plug on the boat-shaped flange is supplied to the opened filling port and held at a predetermined position. The material of the pouring plug of the present invention is not particularly limited as long as it can be welded to the innermost layer material of the package, and for example, polyethylene, polypropylene, polyester or the like can be used. The same material as the inner layer material is preferable. The shape of the pouring plug of the present invention preferably has a boat-shaped flange shown in FIG. 6 having a wide welding area with the filling port. The package filled with the contents and the pouring plug move to the next welding step while maintaining the positional relationship. In the welding process of the present invention, the inner surface of the filling port of the packaging bag and the side surface of the spout flange are welded using a welding device 10 such as heat welding, high frequency welding, or ultrasonic welding. If ultrasonic welding is used, the contents adhering to the filling port can be blown off, and the package and the pouring plug can be completely welded, which is preferable. In the last step, the welded portion is cooled by a cooling device 11 such as a cooling seal or air blowing, and the self-supporting package with a pouring plug filled with the contents is discharged from the table. In the present invention, the operation of each step can be carried out by intermittently moving the self-supporting bag and the self-supporting package by one pitch motion between the respective steps, and in some cases, the mechanism of each step is operated by the self-supporting bag and the self-supporting bag. It can be performed in synchronization with the continuous movement of the sex package. Next, an embodiment of the present invention including a step of continuously producing a self-supporting bag from a long raw material for packaging material will be described. In FIG. 8, the original film 18 unwound from the roll 17 is perforated by the bottom punching step 19, and is over-folded via the original feed step 20 and at the same time the bottom folding step 21.
Causes the bottom component material to be folded. After that, the film is heat-sealed in the bottom sealing step 22 and the side sealing step 23, punched into the shape of a self-supporting bag in the punching step 24, and supplied to a table similar to that shown in FIG. 5 for holding, opening, filling, and pouring. Are supplied and welded and discharged as a self-supporting package with a pouring plug. As another embodiment of the present invention, as shown in FIG. 9, the steps from punching of self-supporting bag, supply to holding, opening, filling, supply of pouring plug, welding, and discharging may be arranged linearly. it can. The device of the present invention is a device for manufacturing a self-supporting package, which is obtained by combining the mechanisms having the functions of the above-described steps of the manufacturing method of the present invention in the order of steps.

[0011]

EXAMPLE A multilayer film made of polypropylene film as the inner layer and stretched nylon 6-6 film as the outer layer, has a height of 26 cm and a width of 14 cm at the bent portion 15.
According to the present invention by the manufacturing apparatus of FIG. 5, a self-supporting bag in which the width of the filling port portion just above the bag is 8 cm and the length between the bent portion 15 and the bottom end portion is 4 cm is used. Was carried out. The self-supporting bag loaded in the magazine 4 was fed to a predetermined position on the table using a bag feeding device and held substantially vertically by the gripper 5. Both sides of the self-supporting bag were slightly separated using a vacuum suction cup 6 to open the bag by blowing air with an air blowing nozzle 7 from a slit formed, and then 800 ml of salad oil was filled from a constant quantity supply device. Then, a pouring plug having a spout with a plug on a polypropylene boat-shaped flange was supplied to the filling port, and the flange portion of the pouring plug and the inner surface of the filling port were welded by an ultrasonic welding device. At this time, the salad oil adhering to the inner surface of the filling port was repelled by ultrasonic waves, and strong welding was achieved.

[0012]

According to the present invention, a self-supporting package with a spout having contents can be manufactured with the same productivity as a self-supporting package without a spout having contents and a self-supporting package. The shape of the body can be freely selected, and it is possible to manufacture an easy-to-handle self-supporting package having a pouring plug in the center right above.

[Brief description of drawings]

FIG. 1 is a side view of a conventional self-supporting bag with a spout plug.

FIG. 2 is a side view of a conventional self-supporting bag with a spout plug.

FIG. 3 is a side view of a conventional self-supporting bag with a spout plug.

FIG. 4 is a side view of a conventional self-supporting bag with a pouring plug.

FIG. 5 is an explanatory view showing a method for producing a self-supporting package of the present invention.

FIG. 6 is a perspective view of a spout having a boat-shaped flange.

FIG. 7 is a side view of the self-supporting package.

FIG. 8 is an explanatory view showing the method for producing the self-supporting package of the present invention.

FIG. 9 is an explanatory view showing a method for producing a self-supporting package of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 spout 2 opening 3 filling port 4 magazine 5 gripper 6 opening device 7 air blowing nozzle 8 quantitative supply device 9 spout 10 welding device 11 cooling device 12 side seal line 13 heat seal line 14 heat seal line 15 bent part 16 Linear Grooves and Linear Ribs 17 Roll 18 Raw Film 19 Bottom Punching Process 20 Raw Fabric Feeding Process 21 Bottom Folding Process 22 Bottom Sealing Process 23 Side Sealing Process 24 Punching Process

Claims (6)

[Claims] 1. A method of manufacturing a self-supporting package with a pouring plug, comprising the steps of (a) supplying and vertically holding a self-supporting bag having a filling port for the contents directly above, (b) the self-supporting bag. Opening a filling port of (c) filling the self-supporting bag with contents,
(d) a step of supplying a spout having a spout with a plug on a boat-shaped flange to a filling port, (e) a step of welding the side surface of the spout flange to the inner surface of the filling port, and A method for producing a self-supporting package with a pouring plug, wherein the order of each step is (a), (b), (c), (d), (e). 2. The self-supporting package with a pouring plug according to claim 1, further comprising the step of continuously producing a self-supporting bag having a filling port for contents directly above it from a long material web. Production method. 3. The contents according to claim 1, wherein the self-supporting bag is self-supporting up to the upper part by providing a constricted part or a constricted part on the upper part and a linear rib having irregularities on the surface of the bag body. A method for producing a self-supporting package with a stopper. 4. (a) A mechanism for supplying and vertically holding a self-supporting bag having a filling port for filling contents, (b) a mechanism for opening the filling port of the self-supporting bag, and (c) the self-standing device. Mechanism for filling the contents into a flexible bag, (d) a mechanism for supplying a spout having a spout with a plug on a boat-shaped flange to a filling port, (e) a side face of the spout flange for the inner surface of the filling port An apparatus for producing a self-supporting package with a pouring plug, which has a mechanism for welding to a sheet and is combined with each mechanism in the order of (a), (b), (c), (d), and (e). 5. A self-supporting bag with a pouring plug in which a self-supporting bag having a filling port directly above is filled with contents and then a pouring plug is supplied to the filling port and a side face of the pouring plug flange is welded to an inner surface of the filling port. Packaging. 6. The self-supporting bag with a spout according to claim 5, wherein the self-supporting bag is self-supporting up to the upper part by providing a constricted part or a constricted part on the upper part and a concave and convex linear rib on the surface of the bag body. Sex packaging.