JP5437762B2 - Lid member welding method and manufacturing apparatus thereof - Google Patents

Description

The present invention relates to a lid member welding method for a container in which a lid member is thermally welded to the inside of a tubular film cut to a certain size, and an apparatus for manufacturing the same.

When pasting a mayonnaise, ketchup, mustard, or other paste-like material on food, fast food stores such as hamburgers and hot dogs need to be processed in a short time. It is designed to increase the efficiency by discharging a proper amount from the container by a dispenser. Moreover, many cartridge type containers are used for the dispenser. (Patent Document 1) Since these cartridge-type containers are disposable, they are easy to use, but the influence on the environment is not necessarily good, and improvements are required in terms of cost, and various proposals have been made. (Patent Document 2) Although a proposal using an inner bag instead of a cartridge has been made, a method and an apparatus for efficiently producing a cylindrical inner bag have not been satisfactory. Therefore, in order to solve these problems, the applicant has applied for a method for manufacturing a cylindrical bottomed bag and a manufacturing apparatus therefor. (Japanese Patent Application 2009-004622)
Japanese Patent Publication No. 3-23436 Japanese Patent No. 2944116

The problem to be solved by the present invention is a container having the convenience of a cartridge-type container, in particular a container used as a paste-like food container, and a method for efficiently producing a container comprising a tubular film and a lid member And providing an improved apparatus.

The lid member welding method according to the present invention is a lid member welding method for a container in which a lid member is thermally welded inside a tubular film cut to a certain size, and the lid member is mounted on a tiltable lid member receiver. A step of placing and holding the lid member receiver with a suction pad facing the cylindrical film, and a step of holding the lid member receiver at a right angle to the cylindrical film. A step of positioning the welded portion on the lid member, a first heat welding step of sandwiching the welded portion of the lid member placed on the lid member receiver with a pair of heater blocks from the outside of the cylindrical film, and heat welding, The lid of the container in which the lid member is thermally welded to the inner side of the cylindrical film by the second thermal welding process in which the angle of the place to be welded is approximately 90 degrees and the step of taking out the container in which the lid member is thermally welded to the inner side of the cylindrical film Lid member welding designed to weld members How to wear.

Further, the lid member welding device is a lid member welding device for a container in which a lid member is thermally welded inside a tubular film cut to a certain size, and the lid member receiving device holds the lid member and is tiltable. And a covering device that opens and covers the lid member receiver with a suction pad that opposes the cylindrical film, and holds the lid member receiver at a right angle to the cylindrical film to cover the welded portion of the cylindrical film to the lid member A first heat welding device for sandwiching and thermally welding a welded portion of the lid member placed on the lid member receiver from the outside of the tubular film by a pair of heater blocks, and an angle of the place for thermal welding Is a lid member welding device in which a second thermal welding device having a difference of about 90 degrees and a take-out device for taking out a container having a lid member thermally welded to the inside of a cylindrical film are provided.

A container using these methods or the apparatus thereof is a container having the convenience of a cartridge-type container. In particular, the container can be used as a paste-like food container in a dispenser, and is a simple and environmentally friendly container.

According to the lid member welding method of the present invention, the inner surface of the tubular film and the outer periphery of the lid member can be efficiently heat-sealed without any problem. Further, by using the lid member welding apparatus, a self-standing bag container made of a cylindrical film and a lid member can be manufactured very efficiently without generating wrinkles in the seal portion. In addition, if the lid member is provided with an opening valve and the container is filled with a paste-like material and the opening of the tubular film is sealed, the opening of the container can be removed from the opening valve of the container by removing the opening. Since it can be made to dispense by an appropriate amount with a dispenser, efficiency can be further improved.

It is a description top view which shows the cover member welding apparatus of one Example which concerns on this invention. It is explanatory drawing explaining the constant pitch feed process of the fixed dimension of the cylindrical film of one Example of this invention. It is explanatory drawing explaining the tiltable lid member receiving apparatus of one Example which concerns on this invention. It is a description perspective view of the covering apparatus which opens and covers a cylindrical film on the cover member receiver of one Example which concerns on this invention. It is explanatory drawing explaining the heat welding apparatus pinched | interposed and heat-welded with a pair of heater block of one Example of this invention. It is explanatory drawing which shows one Example of the container which heat-welded the cover member inside the cylindrical film which concerns on this invention.

The container of one embodiment according to the present invention is a molded product mainly made of polypropylene, and a disk-shaped lid member and a cylindrical film of nylon and polypropylene are thermally welded to the periphery of the lid member and the inside of the cylindrical film. ing.

The present invention will be described below with reference to the drawings.
First, as shown in FIG. 6, a container in which the peripheral edge 3 of the lid member 2 is thermally welded to the inside of the tubular film 1. As the tubular film 1 used in the present invention, a nylon-polypropylene co-extruded blown film can be used, but the resin composition of the film is not particularly limited, and a conventionally used resin such as polyethylene or polyester should be selected. Can do. In addition, the tubular film 1 is a film obtained by cutting an inflation film into a desired length as it is, but it is convenient to use, but a film formed into a flat shape by an inflation molding method or a T-die extrusion molding method having different sizes. The ends may be molded into a cylindrical shape by heat sealing or the like. The lid member 2 includes a peripheral edge 3 that is continuous with a flat lid portion 15. In addition, it is preferable that the internal diameter of the cylindrical film 1 and the external shape of the peripheral edge 3 of the cover member 2 are substantially the same distance.
As the material, polypropylene can be mainly selected because the peripheral edge 3 of the lid member 2 and the inner surface of the tubular film 1 are thermally welded.

Next, the lid member welding method and apparatus according to the present invention will be described with reference to FIGS.
First, in a state where the roll-shaped tubular film 1 is folded, a fixed dimension is fed while the both ends thereof are held by the U-shaped film guides 9 by the constant pitch feed roller 7. A pair of opposing suction pads 11 are arranged in the vicinity of the lower end of the cylindrical film 1, and the cylindrical film 1, which has been fed out a certain dimension, is cut into a certain dimension by the cutter 8 while being held by the suction pad 11. Is done. The cylindrical film 1 cut to a certain size is opened at the lower end by the suction pad 11, and the suction pad 11 is lowered so that the opening 5 of the cylindrical film 1 is placed on the inclined lid member receiver 10. The lid member 2 can be covered. Moreover, when the suction pad 11 is plural, the cylindrical film 1 can be reliably held.
The lid member 2 is supplied to and placed on the lid member receiver 10 in the previous step of the covering step.

The tilted lid member 2 changes the angle of the lid member receiver 10 at a right angle to the cylindrical film 1 when the lid member 2 can be completely inserted into the cylindrical film 1 during the covering process. And the welding position of the lid member 2 can be matched. Next, the tubular film 1 is further lowered so that the planned welding position at the upper end of the tubular film 1 is aligned with the peripheral edge 3 of the lid member 2. In this state, a first heat welding is performed in which the planned welding position at the upper end of the tubular film 1 and the peripheral edge 3 of the lid member 2 are sandwiched by a pair of heater blocks 14 from the outside of the tubular film 1 and heat-welded. Next, a second heat welding is performed in which the first heat welding and the heat welding position are sandwiched by a pair of heater blocks 14 from the outside of the tubular film 1 at a position rotated approximately 90 degrees. In the second heat welding, the position where the welding cannot be performed on the mating surface of the heater block 14 in the first heat welding is changed, and the heat welding is performed. The lid member 2 and the entire circumference of the tubular film 1 can be reliably heat-welded. The means for changing the heat welding position can change the arrangement direction of the heater block 14 by approximately 90 degrees. Alternatively, a means for rotating the lid member receiver 10 by approximately 90 degrees can be selected. Next, after cooling a heat welding part, a container is completed by taking out the container with which the tubular film 1 and the cover member 2 were heat-welded from an apparatus.

The lid member 2 is a polypropylene molded product having a diameter of 78 mm and a peripheral edge 3 having a width of 15 mm. The lid portion 15 is provided with an opening valve, and has a structure in which the opening portion is covered with a cover so as to be removable.

Next, the cylindrical film 1 was a nylon / polypropylene co-extruded blown film having a thickness of 70 microns, a folding diameter of 122 mm, and a length of 200 mm.
Next, a sealing method will be described using the lid member 2 and the lid member welding device 4 for the tubular film 1.
The lid member welding device 4 incorporates the operations of the 10 steps using the cylindrical film 1 supply device and the index. That is, the first step is to supply the lid member 2 and place it on the lid member receiver 10, and the third step is to use the suction pad 11 to remove the cylindrical film 1 sent from the cylindrical film 1 supply device. 1 is opened and the lid member 2 is placed on the lid member receiver 10 on which the tilted lid member 2 is placed. In the fourth step, the lid member 2 that is tilted with the tubular film 1 placed thereon is placed. The step of inserting the tubular film 1 with the lid member receiver 10 at a right angle to the tubular film 1, the fifth step is the insertion of the tubular film 1 for positioning the welded portion 16 of the tubular film 1 on the peripheral edge 3 of the lid member 2. The height adjusting step and the sixth step are a first heat welding step in which the welding portion 16 of the lid member 2 placed on the lid member receiver 10 is sandwiched between the pair of heater blocks 14 from the outside of the tubular film 1 and thermally welded. In the seventh step, the angle of the place where heat welding is performed is approximately 90 degrees different. The second thermal welding process, the eighth process is a process for cooling the thermal welding part 16, and the ninth process is a process for taking out the container in which the lid member 2 is thermally welded to the inside of the tubular film 1, and the container taken out is a conveyor. At the outside of the machine.

The second step and the tenth step are empty steps, and the lid member receiver 10 has a structure in which the lid member 2 is fixed by vacuum, and the apparatus in each process does not interfere with the lid member receiver 10 when the index rotates. In this way, the structure is retracted to the top or side, but details are omitted.
The lid member welding apparatus 4 is the above process, but the process of covering the lid member in the third process, the process of inserting the film in the fourth process, and the step of adjusting the height of the thermal welding in the fifth process are continuously performed. It is possible to design in one process.

In the lid member welding device 4, the lid member 2 is placed on the inclined lid member receiver 10, covered with the tubular film 1, and the lid member receiver 10 is changed to a right angle with the tubular film 1 by changing the angle to the lid member 2. The tubular film 1 can be adhered. Further, in the first heat welding process in which the welding portion 16 of the lid member 2 placed on the lid member receiver 10 is sandwiched between the pair of heater blocks 14 from the outside of the tubular film 1 and heat-sealed, the shape is adjusted to the lid member. The temperature-controlled heater block 14 </ b> A can be sandwiched from the outside of the tubular film 1 to heat-seal the peripheral edge 3 of the lid member and the inner surface of the tubular film 1. After releasing the heater block 14A, the process is moved, and the heater block 14B rotated by 90 degrees is again sandwiched and sealed from the outside of the tubular film 1, and after the heater block 14B is opened, the process is moved and the heat welded portion 16 is moved. After cooling, the process can be moved again to obtain a finished container.

Next, 540 g of mayonnaise was filled from the opening 5 of the food container in which the lid member 2 was welded to the tubular film 1 so that bubbles would not be mixed as much as possible.
The opening 5 was folded flat to eliminate bubbles as much as possible and heat sealed to produce a paste-like food container. When used in a gun dispenser, these paste-like food containers can be smoothly dispensed from the opening valve by simply removing the cover that can be removed outside the opening valve. Could be used.

DESCRIPTION OF SYMBOLS 1 Cylindrical film 2 Lid member 3 Periphery 4 Lid member welding apparatus 5 Opening part 6 Tube reel 7 Constant pitch feed roller 8 Cutter 9 Film guide 10 Lid member receiver 11 Adsorption pad 12 Lid member supply 13 Container extraction 14 Heater block 14A 1st Heat-welding heater block 14B Second heat-welding heater block 15 Lid portion 16 Welding portion

Claims (2)

A lid member welding method for a container in which a lid member is thermally welded to the inside of a tubular film cut to a certain size, the step of placing and holding the lid member on a tiltable lid member receiver, and the lid A step of opening and covering the tubular member with a suction pad facing the tubular film; a step of holding the cover member retainer at a right angle to the tubular film and positioning the welded portion of the tubular film on the cover member; The first heat welding step in which the welded portion of the lid member placed on the lid member receiver is sandwiched between a pair of heater blocks from the outside of the tubular film and thermally welded is different from the angle at which the heat welding is performed by 90 degrees . The lid member of the container in which the lid member is thermally welded to the inside of the tubular film is welded by the heat welding step 2 and the step of taking out the container in which the lid member is thermally welded to the inside of the tubular film. Lid member welding method A lid member welding device for a container in which a lid member is thermally welded to an inside of a cylindrical film cut to a certain size, the lid member holding device holding the lid member, and a tiltable lid member receiving device; A covering device that is opened by a suction pad that faces the cylindrical film, a device that holds the lid member receiver at a right angle to the cylindrical film and positions the welded portion of the cylindrical film on the lid member, and a lid member A first heat welding device for heat welding by sandwiching the welded portion of the lid member placed on the receiver with a pair of heater blocks from the outside of the tubular film, and a second heat at which the angle of the heat welding location differs by 90 degrees A lid member welding device, comprising: a welding device; and a take-out device for taking out a container having a lid member thermally welded to the inside of a tubular film.

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