JP2003011907A - Method for manufacturing packaging product, apparatus for forming folding line used for this and packaging product manufactured by the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a packaging product by which its shaping properties can be improved while production efficiency of the packaging product is ensured. SOLUTION: In the method for manufacturing the packaging product of the present invention by which a packaging bag is formed from a flexible sheet 20 and a fluid product raw material 12 is filled into the packaging bag and after gas in the packaging bag is sucked, the opening part 25 for suction is stuck together and then, it is folded to manufacture the packaging product 10 with an outer shape of the packaging bag being made into an approximately rectangular parallelepiped, the packaging product 10 is manufactured by forming folding lines in advance on the flexible sheet 20 before the packaging bag 11 is formed and then, folding them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention forms a packaging bag from a flexible sheet, fills the inside of the packaging bag with a fluid product material, sucks gas inside the packaging bag, and then attaches a suction port. A method of manufacturing a packaged product which is combined and folded to improve the formability of the packaged product in which the outer shape of the packaging bag is a substantially rectangular parallelepiped, a fold line forming device used for the same, and a package manufactured by the manufacturing method. Regarding the product.

[0002]

2. Description of the Related Art Conventionally, a packaged product in which a fluid product material is enclosed in a packaging bag made of a flexible sheet has been sold as a product. In these packaging products, in order to maintain the quality of the fluid product material enclosed in the packaging bag, for example, to prevent quality deterioration due to oxidation by oxygen in the air, the fluid product material is packaged. After filling the inside of the bag, remove the air inside the packaging bag to create a vacuum,
After removing the air inside the packaging bag, an inert gas such as nitrogen gas is sealed inside the packaging bag.

It is considered that removing the air present inside the packaging bag and making the inside of the packaging bag a vacuum is advantageous in terms of distribution and storage space because the bulk volume of the product can be reduced. In recent years, vacuum-packed products such as household items and food items have been increasing.

By the way, it is also true that the appearance of a product has a great influence on the sales of the product. For example, it is a daily experience that the sales of a product are reduced if the appearance of even a part of the packaging of the product is unsightly.

In particular, consumers in Japan have a keen eye to see the products, and when the products sold overseas are imported into Japan as they are and sold, the quality of the product material, which is the content of the packaged product, is also pointed out. However, it is often the case that we receive suggestions for defective packaging of products.

Therefore, producers and sellers of products are required to pay close attention not only to the quality of the fluid product material, which is the content of the product, but also to the appearance of the packaging of the product. ing.

[0007]

However, in the conventional method for manufacturing a packaged product in which the air inside the packaging bag is simply removed to reduce the bulk volume, the form of the packaged product is shaped nicely into a uniform shape. It is difficult to deliver a packaged product shaped into a fixed shape to a consumer's hand while holding the packaged product in a fixed shape.

For example, in a packaging product (commodity) such as regular coffee, a packaging bag made of a flexible sheet is formed into a substantially rectangular parallelepiped shape, and the lower end opening of the rectangular parallelepiped shape cylinder is bonded to the packaging bag. After filling the roasted and ground regular coffee (coffee powder) as a fluid product material from the upper opening end surface inside, after sucking the air inside the packaging bag from the upper opening end surface to make the inside of the packaging bag a vacuum state, The packaging bag is sealed by sticking and bending the suction port and adhering it to the side surface of the rectangular parallelepiped using tape.

That is, as shown in FIG. 7, a conventional method for manufacturing a regular coffee packaged product includes a step 1 of supplying a flexible sheet and a step of bending the flexible sheet into a cylindrical shape to form a cylinder. Then, the back-seal sealing step 2 in which both curved end surfaces are bonded together, the molding step 3 in which a rectangular parallelepiped tube is molded from the cylinder, and the bottom seal in which the lower end surface opening of the rectangular parallelepiped cylinder is bonded to form the bottom of the packaged product Step 4, filling step 5 for filling the inside of the rectangular parallelepiped with the fluid product material from the upper opening end surface of the rectangular parallelepiped tube, and cutting step for cutting the upper opening end surface of the rectangular parallelepiped tube filled with the fluid product material 6, a trimming step 7 for sucking the gas remaining in the rectangular parallelepiped cylinder to attach the suction port portions of the rectangular parallelepiped cylinder to each other, and bending the suction port portion to the side surface portion of the rectangular parallelepiped cylinder. It consists of attaching process 8 which is pasted by-loop, thereby manufactures continuously packaging products.

This type of manufacturing method has been adopted in high-speed filling and packaging machines and various improvements have been made (for example, US
PATENT No.5,339,604, EP1 057 729
A1, EP0 836 997A1, etc.), in the case of a packaged product in which a packaging bag made of a flexible sheet is formed into a rectangular parallelepiped shape and vacuum-packaged, a bent portion of the flexible sheet, that is, a side surface portion and an upper surface portion of the packaging bag ( It was difficult to shape the shape of the bent portion with the top surface portion), the bent portion between the side surface portions and the side surface portion, the bent portion between the bottom surface portion and the side surface portion, and the backing seal portion of the packaging bag with good appearance.

In particular, the bent portion between the top surface and the side surface of the rectangular parallelepiped shape is the most important portion for finishing the appearance of the product with a good appearance, and the quality of shaping of this bent portion is important for the sales of the product. Although it is one of the elements, the conventional method for manufacturing a packaged product has a problem that it is difficult to improve the formability of the bent portion between the top surface portion and the side surface portion.

[0012] Further, the larger the mass and the higher the rate of manufacturing packaged products, the more generally the packaging ability and the formability are in inverse proportion to each other.
It is known from experience that the higher the high speed and the higher the production capacity, the lower the formability of the packaged product. We are taking visual inspections to remove bad-looking defective products and provide products that have a uniform appearance, but the quality of the inspections varies from person to person due to human labor, and it also costs money. There is a point.

The present invention has been made in view of the above circumstances, and is a method for manufacturing a packaged product which can improve the shaping property while ensuring the production efficiency of the packaged product, and a fold line formation used for the method. An object is to provide a packaged product manufactured by the device and the manufacturing method thereof.

[0014]

A method of manufacturing a packaged product according to claim 1, wherein a packaging bag is formed from a flexible sheet, a fluid product material is filled in the packaging bag, and the inside of the packaging bag is filled. In the method for producing a packaged product in which the suction port is pasted and the post-bending is performed to produce a packaged product in which the outer shape of the package is a substantially rectangular parallelepiped after sucking the gas, After forming the folding line in advance on the flexible sheet,
It is characterized in that the packaged product is manufactured by folding.

The method for manufacturing a packaged product according to claim 2 is
The method for manufacturing a packaged product according to claim 1, wherein the step of supplying the flexible sheet and the flexible sheet are curved into a cylindrical shape to form a cylinder, and both curved end surfaces are bonded together. A fold line forming step of forming the fold line is provided between the step and the step.

The method for manufacturing a packaged product according to claim 3 is
A step of supplying a flexible sheet, a step of back-bonding and sealing the flexible sheet into a cylindrical shape and bonding both curved end surfaces to form a cylinder, and a forming of a rectangular parallelepiped cylinder from the cylinder And a bottom sealing step of bonding the lower end face opening of the rectangular parallelepiped cylinder to form the bottom surface of the packaged product, and a fluid product material from the upper end face opening of the rectangular parallelepiped cylinder to the inside of the rectangular parallelepiped cylinder. And the filling step of filling the fluid product material, after cutting the upper end face opening of the rectangular parallelepiped cylinder filled with the fluid product material, the gas remaining in the rectangular parallelepiped cylinder is sucked from the upper end face opening to form a suction port of the rectangular parallelepiped cylinder. Manufacture of packaged products that includes a trimming process of sticking each other and a sticking process of bending the suction port parts that are stuck together and sticking them to the side surface of the rectangular parallelepiped cylinder with tape. In the method, the suction port part is provided between a step of supplying the flexible sheet and a back-paste sealing step of bending the flexible sheet into a cylindrical shape to attach a curved end surface to form a cylinder. It is characterized in that a folding line forming step of forming a folding line for bending is provided.

In the folding line forming apparatus according to the present invention, a packaging bag is formed from a flexible sheet, a fluid product material is filled in the packaging bag, and gas inside the packaging bag is sucked,
The flexible sheet is used in a method for producing a packaged product in which the suction port is laminated and bent to produce a packaged product in which the outer shape of the packaging bag is a substantially rectangular parallelepiped, and in the previous step of forming the packaging bag. A folding line forming device for forming a folding line in advance, wherein the projecting member disposed on one surface side of the flexible sheet and the flexible sheet forming the folding line on the other surface side of the flexible sheet for forming the folding line. It is characterized in that it is provided with a concave member arranged to face the projecting member with the flexible sheet interposed therebetween.

According to a fifth aspect of the invention, in the folding line forming apparatus according to the fourth aspect, the protrusion-shaped member and the concave portion are provided to adjust the folding line forming position of the flexible sheet. The shaped member is integrally reciprocable in the extending direction of the flexible sheet.

A folding line forming apparatus according to a sixth aspect is the folding line forming apparatus according to the fifth aspect, wherein the flexible sheet has a heat melting layer, and the projecting shaped member has the flexibility. It is characterized in that a heater for heating the folding line forming portion of the sheet is provided.

A method for manufacturing a packaged product according to claim 7 is
The method for manufacturing a packaged product according to any one of claims 1 to 3, wherein the fluid product material is a food or drink material.

The folding line forming apparatus according to claim 8 is the folding line forming apparatus according to any one of claims 4 to 6, wherein the fluid product material is a food or drink material. And

A method for manufacturing a packaged product according to claim 9 is
The method for manufacturing a packaged product according to claim 7, wherein the food and drink material is coffee powder. The folding line forming apparatus according to a tenth aspect is the folding line forming apparatus according to the eighth aspect, wherein the food material is coffee powder.

In the packaged product according to claim 11, a packaging bag is formed from a flexible sheet, a fluid product material is filled in the packaging bag to suck gas in the packaging bag, and then a suction port portion is formed. Is a packaged product in which the outer shape of the packaging bag is a substantially rectangular parallelepiped that is laminated and bent, and after forming a folding line in advance on the flexible sheet before forming the packaging bag,
It is characterized by being manufactured by folding.

[0024]

1 is a view showing an external shape of a packaged product according to the present invention, and FIG. 2 is a process diagram for explaining a manufacturing process of the packaged product according to the present invention.

In FIG. 1, reference numeral 10 denotes a rectangular parallelepiped packaged product, and the rectangular parallelepiped packaged product 10 has a fluid bag material 12 enclosed in a packaging bag 11. The packaging bag 11 includes a bottom surface portion 13, side surface portions 14 to 17, and an upper surface portion (top surface portion) 18. Side part 1 of the packaging bag 11
A back-adhered seal portion 19 is formed at 7.

The fluid product material 12 is a food and drink material (food and drink, favorite food) here, for example, regular coffee powder, instant coffee powder, cocoa powder, tea leaves, and creaming powder, but not limited thereto. Is.

The packaged product 10 is formed by using the flexible sheet 20 shown in FIG. The flexible sheet 20 includes, but is not limited to, roll plastics, paper, and a multilayer sheet in which these are combined.

Here, as shown in FIG. 3, the flexible sheet 20 has a three-layer structure in which a printing layer 20A, a blocking layer 20B, and a fusing layer 20C are adhered to each other, and the printing layer 20A is of the packaging bag 11. It is formed on the outermost layer side, and the fusion bonding layer 20C is formed on the innermost layer side. The printing layer 20A is made of a material such as polyethylene terephthalate, oriented polypropylene, orientated nylon, and the blocking layer 20B is made of a material such as aluminum foil, various vapor-deposited polyethylene terephthalate, ethylene vinyl alcohol copolymer, and a fusion layer. 20C is composed of materials such as cast polypropylene and various polyethylenes.

In this method for manufacturing a packaged product, a process 30 of pulling out and supplying the roll-shaped flexible sheet 20 and a folding line forming device, which will be described later, are used to form the folding lines 21.
The folding line forming step 31 which is preformed at 0, and the flexible sheet 20 is wound around a cylindrical shaping mold (not shown) to form the cylinder 22, and the flexible sheet 20 is curved into a cylindrical shape. A back sticking seal step 32 of forming the back sticking seal portion 19 by sticking the curved end surfaces 23 together with a seal bar 23A, and a rectangular parallelepiped cylinder shaping not shown in the cylinder 22 for transforming the cylinder 22 into a rectangular parallelepiped cylinder 24. Molding step 33 for molding the rectangular parallelepiped cylinder 24 by inserting the mold
And a bottom sealing step 34 of attaching the lower end face opening 24A of the rectangular parallelepiped tube 24 with the seal bar 23B to form the bottom surface portion 13 of the packaged product 10, and the upper end face opening 24B of the rectangular parallelepiped tube 24 to the rectangular parallelepiped tube 24. A filling step 35 for filling the fluid product material 12 into the interior of the container, a cutting step 36 for cutting the upper opening end surface 24B of the rectangular parallelepiped tube 24 filled with the fluid product material 12 with a cutter member 23C, and a rectangular parallelepiped tube 24. The remaining gas is sucked to bring the suction port portions 25 of the rectangular parallelepiped tube 24 into close contact with each other and to attach them together, and the excess portion is cut by the cutter member 23D, and the suction port portion 25 is bent to wrap the packaging bag 11 Tape 2 on the side surface 17
6, and a sticking step 38 for sticking.

In the folding line forming step 31, a folding line forming device 40 shown in FIG. 4 is provided. This folding line forming device 4
0 is attached to a column 41 of a high-speed filling and packaging machine, and a support bracket 42 is attached to the column 41. A drive motor 43 is attached to the support bracket 42.
And a support frame body 45 is provided on the output shaft 44 of the drive motor 43. An air cylinder device 46 is supported on the support frame 45, and a heater device 48 is provided on an advancing / retreating rod 47 of the air cylinder device 46, and a projecting member 49 having a wedge-shaped cross section is provided. The protruding member 49 faces one surface of the flexible sheet 20 to form the folding line 21. Support frame 4
5, a concave member 50 is attached to the other surface side of the flexible sheet 20 so as to face the protruding member 49 with the flexible sheet 20 interposed therebetween. Air is supplied from the air supply source 52 to the air cylinder device 46 by opening and closing the solenoid valve 51, whereby the advancing / retreating rod 47 moves away from and approaches the concave member 50.

The protruding member 49 and the concave member 50 are shown in FIG.
As shown in FIG. 5, the projecting shape member 49 and the concave shape member 50 cooperate with each other due to the advancing / retreating rod 47 approaching and separating while the flexible sheet 20 is being supplied. Based on the above, the flexible sheet 20 is pressed and heated so that the folding lines 21 are formed at regular intervals in the direction traversing the flexible sheet 20.

Iron, copper, aluminum, and stainless steel can be used as the material used for the protruding member 49 and the recessed member 50. However, when the product material is a food or drink material, it is suitable for food. It is desirable to use the protrusion-shaped member 49 and the recess-shaped member 50 made of aluminum as a material from the viewpoint of reduction in weight and weight. Because aluminum is a soft metal material compared to other metal materials, the folding line 2
This is because the flexible sheet 20 is less likely to be scratched when forming 1.

The width of the tip of the protruding member 49 is 0.1 m.
The range of m to 5 mm is desirable, and correspondingly, the width of the groove 50a of the concave member 50 is preferably 0.2 mm to 10 mm. Here, the flexible sheet 20 is prevented from being scratched. In order to efficiently form the folding lines (folding lines) 21 on the flexible sheet 20, the tip angle of the protrusion-shaped member 49 is about 20 degrees, and the width of the tip is about 1 mm. The groove 50a has a width of about 1.5 mm and a depth of about 1 mm, and aluminum is used as a metal material forming both members 49 and 50.

The heater device 48 has a function of heating the projecting member 49 and melting the fusion layer 20C while pressing the flexible sheet 20. As a result, the folding line (folding line) 21 is formed.
Since the state with is kept stable, heater device 4
8 is more preferable, and it is even more preferable if the temperature of the folding line forming portion of the flexible sheet 20 can be set in the range of about 100 ° C. to 500 ° C. Here, Since it is necessary to continuously form the folding lines 21 on the flexible sheet 20 at intervals of about 50 to 100 times per minute, it is necessary to form the folding lines 21 having a length of about 300 mm. As the electric capacity of 48, one having a capacity of 1 kW was used. At that time, the temperature of the tip portion of the protruding member 49, that is, the temperature of the folding line forming portion of the flexible sheet 20 was about 140 ° C.

The drive motor 43 has a role of reciprocating the support frame 45 in the direction in which the flexible sheet 20 extends, whereby the projection-shaped member 49 and the concave-shaped member 50 of the flexible sheet 20 are formed. The folding line forming position of the flexible sheet 20 is adjusted by integrally reciprocating in the extending direction.

This is because the fold line forming portion of the flexible sheet 20 is automatically adjusted in response to changes in the internal volume of the fluid product material 12, variations in bulk specific gravity, changes in packaging bag height, and variations. Therefore, the drive motor 43 is appropriately driven based on the information based on the change of the internal capacity, the variation of the bulk specific gravity, and the change of the height of the packaging bag so that the position of the support frame body 45 is changed in the vertical direction. Flexible sheet 2
The 0 fold line formation location is appropriately adjusted.

In the embodiment of the present invention, the suction port portion 25
I decided to form the folding line 21 at the place corresponding to
Folded into the bent portion 19 ′ (see FIG. 2) of the back-stick seal portion 19 such as the bent portion 14 ′ between the side surface portion 14 and the side surface portion 15 and the bent portion 16 ′ between the side surface portion 15 and the side surface portion 16. The line 21 may be provided.

In the packaged product 10 manufactured by the conventional packaged product manufacturing method, as shown in FIG.
8 is a bent portion 18 ′ between the side surface portion 15 and the flatness of the upper surface portion 18 is also unsightly, but according to the method for manufacturing a packaged product of the present invention, as shown in FIG.
As shown in FIG.
And the bent portion 18 ', the flatness of the upper surface portion 18, the side surface portion 1
Bottom part 1 such as a bent part 14 ′ between 4 and the side part 15
The linearity of the bent portion 13 ′ between 3 and the side surface portion 15 was good, and a good-looking packaged product could be manufactured.

[0039]

According to the method of manufacturing a packaged product and the folding line forming apparatus used for the same according to the present invention, it is possible to improve the formability of the packaged product while ensuring the production efficiency.

The packaged product according to the present invention has the effect of having a good appearance. That is, the top surface of the packaged product is almost flat, the side surface is almost rectangular, and the bent portion between the side surface and the top surface is a substantially horizontal straight line, which dramatically improves the appearance of the packaged product and causes appearance defects. The rate is greatly reduced.

[Brief description of drawings]

FIG. 1 is an external view of a packaged product manufactured by the manufacturing method of the present invention.

FIG. 2 is a process flow diagram of a method for manufacturing a packaged product of the present invention.

FIG. 3 is a partial view showing a cross-sectional shape of a flexible sheet.

FIG. 4 is a schematic view of a folding line forming device of the present invention.

5 is a perspective view showing a projection-shaped member and a concave-shaped member shown in FIG. 4. FIG.

FIG. 6 is an external view of a packaged product manufactured by a conventional manufacturing method.

FIG. 7 is a process flow diagram of a conventional packaged product manufacturing method.

[Explanation of symbols]

10 ... Packaged products 11 ... Packaging bag 12 ... Fluid product material 20 ... Flexible sheet 21 ... Folding line 25 ... Suction port

Claims (11)

[Claims] 1. A packaging bag is formed from a flexible sheet, a fluid product material is filled in the packaging bag, gas inside the packaging bag is sucked, and then a suction port is stuck and bent. In the method of manufacturing a packaged product in which the outer shape of the packaging bag is a substantially rectangular parallelepiped, the flexible sheet before the packaging bag is formed with a folding line in advance, and then the packaged product is folded. A method for producing a packaged product, comprising: 2. The folding is performed between a step of supplying the flexible sheet and a back-paste sealing step of bending the flexible sheet into a cylindrical shape and bonding both curved end surfaces to form a cylinder. The method for producing a packaged product according to claim 1, further comprising a folding line forming step of forming a line. 3. A process of supplying a flexible sheet, a process of bending the flexible sheet into a cylindrical shape to form a cylinder and attaching both curved end faces to each other, and a step of sealing the cylinder from the cylinder. A forming step of forming a tube, a bottom sealing step of attaching a lower end surface opening of the rectangular parallelepiped tube to form a bottom portion of a packaged product, and an inside end of the rectangular parallelepiped tube from an upper end opening of the rectangular parallelepiped tube. A filling step of filling the fluid product material, and after cutting the upper end face opening of the rectangular parallelepiped cylinder filled with the fluid product raw material, the gas remaining in the rectangular parallelepiped cylinder is sucked from the upper end face opening of the rectangular parallelepiped cylinder. A package consisting of a trimming step of attaching the suction port portions to each other, and a step of bending the suction port portions attached to each other and attaching the tape to the side surface of the rectangular parallelepiped cylinder with tape. In the method of manufacturing an article of manufacture, between the step of supplying the flexible sheet and the back-sticking step of bending the flexible sheet into a cylindrical shape to form a cylinder and bonding the curved end surfaces together, A method for manufacturing a packaged product, comprising a folding line forming step of forming a folding line for bending the suction port portion. 4. A packaging bag is formed from a flexible sheet, a fluid product material is filled inside the packaging bag, gas inside the packaging bag is sucked, and then a suction port is stuck and bent. A fold line forming device used in a method of manufacturing a packaged product for producing a packaged product in which the outer shape of the packaging bag is a substantially rectangular parallelepiped, and forming a fold line in advance on the flexible sheet in a step before forming the packaging bag. The projecting member disposed on one surface side of the flexible sheet to form the folding line and the projecting member sandwiching the flexible sheet on the other surface side of the flexible sheet. A folding line forming device, comprising: 5. The protrusion-shaped member and the concave-shaped member are integrally reciprocable in the extending direction of the flexible sheet in order to adjust the folding line forming position of the flexible sheet. The folding line forming device according to claim 4, wherein the folding line forming device is provided. 6. The flexible sheet has a heat melting layer, and the projecting member is provided with a heater for heating a folding line forming portion of the flexible sheet. The folding line forming device according to claim 5. 7. The method of manufacturing a packaged product according to claim 1, wherein the fluid product material is a food or drink material. 8. The folding line forming apparatus according to claim 4, wherein the fluid product material is a food or drink material. 9. The method for producing a packaged product according to claim 7, wherein the food and drink material is coffee powder. 10. The folding line forming apparatus according to claim 8, wherein the food material is coffee powder. 11. A packaging bag is formed from a flexible sheet, a fluid product material is filled into the packaging bag to suck gas inside the packaging bag, and then the suction port is stuck and bent. A packaged product in which the outer shape of the packaging bag is a substantially rectangular parallelepiped, which is produced by forming folding lines in advance on the flexible sheet before forming the packaging bag and then folding it. Product.