JP2003020028A - Paper container for beverage or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper container for beverage or like in which a used paper container is required to be folded flat for facilitating its recycle after the paper container is used, and at this time, a seal flap can be easily lifted up with fingers. SOLUTION: In the paper container for beverage or the like, a top surface seal flap is folded onto a side surface, and the top surface lateral seal is held by a holding member arranged at the side surface to form the top surface, resulting in that it becomes possible to provide the paper container in which, when the paper container is to be formed, the top surface seal flap folded at the side surface is not required to be fixed to the side surface. Since the paper container is folded flat and waisted, fingers are not damaged when the top surface seal flap is lifted up and the top surface seal flap can be easily lifted up.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper container for beverages and the like. 2. Description of the Related Art FIG. 7 is an explanatory view of a conventional paper container, and is a perspective view of a paper container main body viewed from a lateral direction. As shown in the figure, the seal flap of the horizontal line seal portion when forming the container is folded on the side surface of the container, and is fixed to the side surface of the container by glue or thermocompression (not shown). When using paper containers for beverages manufactured in this way during sports or outdoor activities, and once disposing of the paper containers after opening and drinking with straws, etc., it is easy for each person to recycle by hand. The paper container is folded and discarded. However, the tip portion SF1 of the seal flap
Are firmly attached to the side surface of the paper container. Therefore, when a container having such a shape is to be folded and flattened during recycling, it is necessary to pull up the seal flap fixedly formed on the side surface with a finger, but in this case, a load is applied to the nail and the nail is damaged. There was a possibility.
Also, because it is difficult to pull up the front seal flap, the container may be discarded without being folded completely flat because it has been abandoned, and used for recycling work. It was difficult to arrange used paper containers, which sometimes hindered recycling. SUMMARY OF THE INVENTION In view of the above circumstances, the present invention makes it possible to easily lift a seal flap of a paper container with a finger when recycling the paper container after use, thereby damaging a nail. It is an object of the present invention to provide a paper container for a beverage or the like that can be opened without opening. According to the first aspect of the present invention, a web-like packaging material is formed into a tube and filled with a liquid content, and both ends of the tube are sealed with a horizontal line seal and cut. In a paper container in which a wall surface is formed by folding the seal flaps at both ends of the horizontal line seal, by disposing a holding material on a wall portion of the paper container, the seal flap is folded on the wall surface and the holding material is A paper container for beverages or the like, wherein the wall surface is formed by holding a seal flap. Therefore, when a container having such a shape is recycled and the container is folded and flattened, it is necessary to pull up the seal flap formed on the wall surface with a finger, but in this case, the nail is not burdened and the nail may be damaged. It is characterized by being able to provide a paper container without any. FIG. 1 is an external view showing a state of a flap on a wall surface of a paper container according to an embodiment of the present invention. FIG. 2 is a perspective view showing various forms of the holding material when the seal flap is held by the holding material on the wall surface of the paper container according to the embodiment of the present invention. FIG. 3 is a plan view showing a folding line formed on the web-shaped paper packaging material at a stage before the paper container of the embodiment of the present invention is formed. FIG. 4 is a schematic view of a process before filling in a filling machine for forming a paper container according to the embodiment of the present invention. FIG. 5 is a schematic view of a filling machine for forming a paper container according to the embodiment of the present invention. FIG. 6 is a plan view and a sectional view showing a state in which the used paper container is flattened to facilitate recycling. Conventionally, in a filling machine for producing a packaging container filled with liquid food such as milk and soft drink, a web-like packaging material is continuously formed into a tube while being conveyed.
Liquid food is filled in a tubular packaging material. In the figure, reference numeral 11 denotes a packaging material, 30 denotes a sterile chamber disposed at a predetermined position of the filling machine, and the packaging material 11 is set on the filling machine in a state of a reel 12, and is fed by a feeding machine (not shown). And transported in a filling machine in a web-like shape. The wrapping material 11 is formed by cutting a wide base paper (not shown) at a plurality of positions in the vertical direction, and folds m1, m2, and m11 to m14 are formed in advance. The packaging material 11 fed out by the feeder is guided by rollers R1 to R5 (not shown) and supplied to the aseptic chamber 30.
6, guided by R7, subsequently conveyed upward in the aseptic chamber 30, guided by rollers 32, conveyed diagonally upward, and sent to the air knife section 33. Subsequently, the packaging material 11 is conveyed obliquely upward in the air knife section 33, during which the sterilizing agent and the like attached to the packaging material 11 are removed by hot air discharged from a nozzle (not shown). The packaging material 11 discharged from the air knife section 33
Is sent to the first guide roller 34, guided by the first guide roller 34, conveyed downward, and sent to the second guide roller 35. After being guided by the second guide roller 35, the packaging material 11 is conveyed obliquely upward, sent to the third guide roller 36, and guided by the third guide roller 36. Is conveyed downward, is gradually curved while being guided by a not-shown forming ring or the like as a packaging tube forming means, is formed into a tube shape, and is vertically sealed by a vertical sealing device (not shown). It becomes 41. [0010] While the packaging material tube 41 is transported downward, liquid food is supplied from above through the filling pipe 13 and is filled in the packaging material tube 41. In addition,
The first to third guide rollers 34 to 36 are used for the packaging material 11.
Is disposed rotatably on the upstream side of the forming ring in the conveying direction of the sheet and guides the packaging material 11. [0011] Thereafter, the packaging tube 41 is placed in the sterile room 30.
And is sent to a horizontal sealing device (not shown), where it is sandwiched from both sides and sealed in the horizontal direction at predetermined intervals to form a horizontal sealing portion.
Subsequently, in the horizontal seal portion, the packaging material tube 41 is cut by a cutting device (not shown), and the prototype container 14 having a pillow shape, a bag shape, or the like is separated. Then, each prototype container 14 is formed into a predetermined shape along the preformed folds m1, m2, m11 to m14 by a molding device (not shown), and the packaging container 15 is completed. Since the cross-section of the packaging tube 41 has a substantially circular shape, it is difficult to position the packaging tube 41 during the transportation of the packaging tube 41. Therefore, when the packaging material tube 41 rotates, for example, by receiving a force from the forming ring, the overlap portion S2 shifts from a predetermined position. And
When the packaging container 15 is completed by shaping the prototype container 14 into a predetermined shape while the overlap portion S2 is displaced from the predetermined position, the fold m
The position of 1, m2 does not match the actual position of the fold, and the appearance of the packaging container 15 deteriorates. In view of the above, a CCD as the light detecting unit 23 is disposed near the exit of the packaging tube 41 from the sterile chamber 30 so as to face the packaging tube 41, and the over-detection unit 23 is provided based on the sensor output of the CCD. Detecting the lap S2,
One end of the first guide roller 34 is moved in the transport direction of the packaging material 11 in the air knife section 33 based on the first detection data as a detection result of the overlap section S2. That is, when the packaging material 11 is transported between the roller 32 and the first guide roller 34 and reaches the first guide roller 34, the transport surface of the packaging material 11 and the first guide The direction in which one end of the roller 34 is moved is made parallel. In this case, while the packaging material 11 is guided by the first guide roller 34, the first guide roller 3
The first guide roller 34 is moved axially on the surface of the first guide roller 34 in accordance with the amount by which one end of the fourth guide 4 has moved. That is, the packaging material 11 can be moved in a direction perpendicular to the transport direction. Therefore, since the positions of the edges 11a and 11b of the packaging material 11 that are curved by the forming ring change, the overlap portion S2 can be moved, the position of the overlap portion S2 is adjusted, and the overlap portion S2 is moved. It can be put in place. As a result, when the prototype container 14 is formed and the packaging container 15 is completed, the positions of the folds m1 and m2 formed in advance on the packaging material 11 match the actual fold positions. 15 can be improved in appearance. Further, in order to adjust the position of the overlapping portion S2, the paper guide is connected to the edge portions 11a, 1a of the packaging material 11.
Since there is no need to press the package material 1b, the edges 11a and 11b of the packaging material 11 are not damaged. Further, since the conveying surface of the packaging material 11 sent to the first guide roller 34 and the direction in which one end of the first guide roller 34 is moved are made parallel, the overlapping portion S2 is moved to a predetermined position. , The transport state of the packaging material 11 can be prevented from greatly changing. Note that instead of moving one end of the first guide roller 34, one end of the second guide roller 35 is moved, or one end of the first and second guide rollers 34, 35 is moved mutually. You can also. When one end of the second guide roller 35 is moved, the packaging material 11 is transported between the first and second guide rollers 34 and 35 and reaches the second guide roller 35. And the direction in which one end of the second guide roller 35 is moved is set in parallel. The paper container is completed by the above-described method. As shown in FIGS. 1 and 2, the paper container body 15 is, for example, a rectangular box type molded of composite paper containing resin. In the manufacturing process of No. 15, one or more holding materials are provided at desired positions on both side surfaces of the container before or after filling of the contents by a method not shown. Therefore, when the holding material is placed before filling, the sealing flap on the top surface sealed with the horizontal line is attached to the side surface 1 of the paper container body 15.
When folded into 7, the top seal flap is inserted into the holding material, and the top seal flap can be easily held without being fixed to the side surface. In addition, when the holding material is provided after filling, the holding material is attached over the already formed top seal flap to cover the filling material. The shape of the holding material may be any shape as long as the seal flap on the top surface can be sandwiched. As shown in FIG. A band 50b that only secures the sides may be used. Further, the band shape is further narrowed to form a fibrous shape.
c may be used. The material of the holding member may be the same as that of the main container, or may be another simple material. FIG. 3 is a plan view showing the folding line formed on the web-shaped paper packaging material before the paper container is formed. According to the method of holding the seal flap on the top surface, the conventional folding line pattern is used. There is no need to change anything. As described above, when forming the paper container, the top surface is formed only by folding the top surface sealing flap on the side surface and holding the top surface with the holding material. The flap is a paper container for beverages or the like, characterized in that a paper container capable of holding a shape by a holding material without being fixed to the side surface portion can be provided. In the embodiment, the description has been given of the top seal flap. However, the same can be naturally applied to the bottom seal flap. Therefore, since the top seal flap can be easily pulled up, the paper container after use is flattened as shown in a plan view and a cross-sectional view showing a state in which the used paper container in FIG. It is easy to handle without bulk when recycled. The holding material can be attached by any method such as a heat-sealing glue method.
Compared to two-dimensional treatment, two-dimensional control is simpler, so that the amount of additional heat can be easily controlled, and there is no risk of pinholes or the like due to overheating. Therefore, it also leads to formation with low energy. Further, in the embodiment, a rectangular parallelepiped paper container has been described as an example. A column-shaped paper container having a rectangular top and bottom surface and an octagonal body.
Alternatively, the present invention is applicable to various shapes of paper containers such as a container having a seal flap on the top surface but a horizontal line seal at the bottom portion, and these are not excluded from the present invention. As described above, according to the first aspect of the present invention, the web-like packaging material is formed into a tube and filled with the content liquid, and both ends of the tube are sealed with a horizontal line seal and cut. Further, in a paper container in which the top surface is formed by folding both end seal flaps of one of the horizontal line seals, the seal flap is folded on the side surface by disposing pockets on both side portions of the paper container. A paper container for beverages or the like, wherein the top surface is formed by inserting and holding a tip portion of the seal flap in the pocket. Therefore, when the top seal flap is lifted for flattening and discarding the paper container, the seal flap is not fixed to the side surface, so that the finger can be easily lifted without damaging the finger. [0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view showing a state in which a seal flap on a wall surface of a paper container according to an embodiment of the present invention is held by a holding material. FIG. 2 is a perspective view showing various forms of the holding member when the seal flap is held by the holding member on the wall surface of the paper container according to the embodiment of the present invention. FIG. 3 is a plan view showing a folding line formed in a web-shaped paper packaging material at a stage before a paper container according to an embodiment of the present invention is formed. FIG. 4 is a schematic view of a process before filling in a filling machine for forming a paper container according to the embodiment of the present invention. FIG. 5 is a schematic view of a filling machine for forming a paper container according to the embodiment of the present invention. FIG. 6 is a plan view and a cross-sectional view showing a state where the used paper container is flattened to facilitate recycling. FIG. 7 is an explanatory view of a conventional paper container, and is a perspective view of a paper container main body viewed from a lateral direction. DESCRIPTION OF SYMBOLS 50 Holding material 10 Wall surface 11 Packaging material 12 Reel 13 Filling pipe 14 Prototype container 15 Paper container 17 Side surface 18 Top surface 20 Bottom seal flap 21 Top seal flap S1 Horizontal seal portion m2 Bottom surface Seal flap fold line m1 Top seal flap fold line m11-14 Vertical fold line SF1 Top seal flap tip

Claims (1)

Claims: 1. A web-like packaging material is formed into a tube, filled with a content liquid, and both ends of the tube are sealed with a horizontal line seal and cut, and both ends of at least one of the horizontal line seals are sealed. In a paper container in which a wall surface is formed by folding a flap, a holding material for holding the both end seal flaps on the wall surface is provided on a wall surface where the both end seal flaps are in contact, and a paper container for beverages and the like. .