JPH08253239A - Semi-solid paper container - Google Patents

Abstract

PURPOSE: To provide an inexpensive paper container for a semisolid made easy to take out content from the gable roof part of a gabled top carton and made re-sealable. CONSTITUTION: The upper folded side panel 3A of a gable top carton is drawn out forwardly by the pull tab T attached to the upper part of the side panel 3A to open the carton and further cut off from the adjacent roof parts 2A, 4A to obtain a triangular opening part M and the bottom side of the opening part is bent into a dogleg shape to be fixed and, after content is taken out, the upper folded side panel 3A is folded in a container to re-seal the container and the pull tab T is used to reopen the container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-cost paper container which facilitates taking out a semi-solid material having low fluidity.

[0002]

2. Description of the Related Art Taking a gel yogurt as an example of a semi-solid material, a conventional yogurt container has a gently tapered paper in consideration of the ease of taking out with a spoon or the like and the appearance as tableware. A container made of a three-piece member in which a top of a cup made of plastic or plastic is sealed, and a lid is covered with a plastic from the top is generally used. Also, in consideration of the ease of use after opening a product such as a water-based paint, it is often filled in a container having a large opening into which a brush is inserted and which is composed of at least a body and a lid.

[0003]

However, the container with a lid as described above has a large opening, which makes it easy to take out the contents and has a good appearance, but it is at least two pieces, and the manufacturing cost of the material is also high. There is a problem that it takes too much time. Containers made of plastic or metal have excellent protection of the contents, but the problem of difficulty in disposal after use is becoming more prominent. Therefore, for these semi-solid products, it is desired to use a liquid paper container (hereinafter referred to as a gable top carton) having a gable roof which is used for milk, juice, etc., which has a low economic cost. However, the opening of the gable top carton is too small for the above product, and there is a problem that the contents cannot be easily taken out after opening. The present invention has been made in view of such problems, and an object of the present invention is to provide a semi-solid paper container based on a gable top carton that has a large opening and can easily take out contents.

[0004]

Means for Solving the Problems The gist of the present invention made in order to solve the above-mentioned problems is as follows: (1) A gabled gable via a fold line at the upper end of a quadrangular prism-shaped body composed of four body side wall panels. Shaped roof parts are connected to each other, and the gabled roof parts fold inwardly the opposite upper folding side walls inward along diagonal fold lines, respectively, and bend the remaining opposing upper side walls inward, and the upper end ribs of the upper folding side walls In a paper container formed by polymerizing by sandwiching upper end folding ribs and heat-sealing this polymerized portion, a weak line that can be torn between one surface of the upper folded side wall and the adjacent upper side wall. Be provided. (2) An inverted Y-shaped fold line is formed in the central portion of the body side wall panel that is connected to the upper folded side wall sandwiched by the weakening lines through the fold line. (3) A pull tab region having a shape in which the lower portion is closed and the upper portion is opened is formed on the upper folded side wall sandwiched by the weakening lines or across the uppermost portion of the body side wall panel connected to the upper folded side wall via the folding line. A half cut is formed from the front side of the paper container laminate so as to be partitioned, and a pull tab is formed that can be peeled from the lower part of the pull tab region and has a peeling stop means provided on the upper part.

[0005]

According to the present invention, both side edges of the upper folding side wall of the gable top carton are torn, the upper folding side wall is folded back to the outside of the container, folded on the body panel, and pulled toward the front to make a large opening. Since it can be fixed as it is and the opening position can be lowered, it is easy to take out the contents with a spoon, a brush or the like as in the conventional cup-shaped container. In addition, the upper folding side wall can be resealed by folding it in a diagonal fold line and storing it in a container, and when reopening, it is provided with a half cut in advance in the central portion of the upper folding side wall. By using the pull tab that is provided as an auxiliary and pulling the pull tab toward you, reopening can be easily and cleanly performed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a development view of a carton blank 20 for a semi-solid paper container according to the present invention. As shown in FIG. 1, first, in the paper container body portion D, four side wall panels 1D to 4D and a heat seal portion 5D are connected to each other through folding lines 6 to 9.
The upper side wall that forms the gable roof is the fold line 1 at the upper edge of the body
It is connected via 0, and is composed of roof portions 2A, 4A and upper folding side walls 1A, 3A corresponding to gables (the portions of the mountain-shaped walls at both ends of the gable roof). The bottom portion B is composed of portions 1B to 5B which are connected to the lower side of the body portion D via the fold lines 11.

To form the paper container from the above blank, first fold the blank along the fold lines 6 and 6A and the fold lines 8 and 8A, and heat seal the faces where the heat seal portions 5A, 5D, 5B and 5H face each other. Stick it on the tube. The pasted blank is supplied to a molding machine, raised in a prismatic shape, the bottom B is first molded, and after filling the contents, top sealing is performed. This top seal,
First of all, the upper folded side walls 1A and 3A have diagonal fold lines 1
When it is folded inward by the folding lines 2 and 13 and the folding lines 6A and 9A and the weakening lines 7A and 8A, the top seal portions 1H and 3H, which are the ribs on the upper side, are folded in two at the central folding line and remain in conjunction therewith. The top seal portions 2H and 4H, which are ribs, also fall inward at the same time, and the top seal portions 1H and 3H, in which H2 and H4 are folded in double, are sandwiched between them to form a seal, and the top seal is completed. A gable top carton as shown in (a) is finished.

The gable top carton is opened by peeling off only one side of the top seal portion of the rib portion,
Although this is sufficient as a liquid spout, it is too small and too high for a semi-solid material outlet,
The closer the contents are to the bottom, the harder it is to take them out. Therefore, the first point of the present invention is that the upper folded side wall 3A is opened at the first opening.
By weakening lines 7A and 8A provided at both ends of the
This is so that it can be separated from the adjacent roof portions 2A and 4A. This method results in a large opening in the lower position. The weakening lines 7A and 8A are provided by deeply half-cutting from the surface of the laminated material. However, for contents having low penetrability into paper, half-cutting may be performed from the inner surface, and FIG. 5 (a-a 'in FIG. 1).
As shown in the cross-sectional view), the phase may be slightly shifted from both surfaces of the laminated material to be half-cut. The second point is a method of fixing the entire paper container in a state where it is widely opened. In this method, the upper folded side wall 3A has a fold line 1
A fold line 15 perpendicular to the center of the body side wall panel 3D connected through 0 and two fold lines 1 branched from the middle
An inverted Y-shaped fold line consisting of 6 is provided, and further a horizontal fold line 17 is provided at the bottom so as to form an isosceles triangle with the fold line 16, and further, the vertical fold line 15 is extended to the upper part, A fold line 18 is also vertically formed in the center of the folded side wall 3A.
Is to be provided. These folding lines function in conjunction with each other, and have a function of temporarily fixing the opening opening opened in the procedure described later. The fold line forming the inverted Y-shape may be an I-shape in which the fold line 15 is simply extended downward.

A third point is to make it easier to pull the upper folded side wall 3A and the upper top seal portion 3H toward you not only when the gable top carton is opened for the first time but also when the gable top carton is opened again for the second time and thereafter. As a means for opening cleanly, a pull tab T as shown in FIG. 6 is provided. The pull tab T may be provided in the central portion of the upper folded side wall 3A or over the upper folded side wall 3A and the upper end of the body portion 3D. As shown in FIGS. 1 and 6, the pull tab T defines the pull tab region into a shape in which the lower part is closed and the upper part is opened. As shown in FIG. A half cut 14 is added, and when the first opening is performed, the delaminated thin film made of paper and polyethylene can be easily peeled off from the lower end thereof, and it can be pulled. As a stopper means for stopping the peeling at the upper part of the pull tab T, a tape 19 is stuck as shown in FIG. 6 (a), or the upper part of the half cut 14 is made into 19 'as shown in FIG. 6 (b). The shape may be rounded as shown in. The pull tab T is extremely effective for opening the gable top carton, and in the case of the present invention, it can be effectively used not only for the initial opening but also for reopening. As shown in FIG. 5, the half cut 14 of the pull tab T may have such a depth that the paperboard is separated from the intermediate layer. Further, the processing may be performed simultaneously with the processing of the weakening lines 7A and 8A at the time of carton blank molding, or a half-cutting device may be attached to the molding and filling machine to perform the half-cutting on each paper container.

FIG. 2 is an explanatory view of the opening procedure of the semi-solid paper container according to the present invention, and the effect and function of the present invention due to the configuration of each part described above will be further described with reference to this drawing. FIG. 2A is a perspective view of a paper container completed by molding, filling and sealing the carton blank 20 of the semi-solid paper container according to the present invention, and the appearance is the same as that of the conventional gable top carton. However, short gable top cartons are more suitable for the present invention. A half of the top seal portion of the gable top carton on the body side wall panel 3D side is peeled and opened as shown in FIG. 2 (b). That is, the top seal portion 3H that is folded in two and heat-sealed on the upper folded side wall 3A is peeled off, and the top seal portions 2H and 3H, and 3H and 4H are peeled off to open. This second peeling can be done by pulling the central part of 3H to the front, but there is no clue, and even if the top seal strength coats the anti-sealant on the seal part, it still shows a considerable peeling resistance. It takes time and effort. Therefore, in order to open and close this easily and without touching the inside of the top seal, the above-mentioned pull tab T is attached so that the fixed portion thereof is located as high as possible on the upper folded side wall 3A. In the present invention, when the pull tab T is further strongly pulled toward you or the weakening lines 7A and 8A are torn with both fingers, the upper folding side wall 3A is pulled away from the adjacent roof portions 2A and 4A, and as shown in FIG. As shown in (), the triangular opening M having the diagonal folding line 12 'as two sides and the width of the body side wall panel 3D of the folding line 10 as the bottom side is obtained. Next, when the torn upper folded side wall 3A is folded back onto the body side wall panel 3D, the center portion of the folding line 10 is pulled toward you, whereby the inverted Y-shaped folding lines 15 and 16, and further the folding lines 17 and 18 are formed. As a result, the base of the triangular opening M is bent into a dogleg as shown in FIG. At this time, pull it slightly toward you or use the side wall panel 3
Push the left and right sides of D a little strongly, and the two folded lines 1 that overlap
Fold 5 and 18 into a peculiar shape, and let go of them.
A and the body part side wall panel 3D can be fixed in a bent state toward the front as shown in FIG. 2 (d). This is because the repulsive force of the carton paper at the folding line 10 is suppressed by this front folding.

FIG. 3 is an explanatory view of the resealing procedure of the semi-solid paper container according to the present invention. In the state shown in FIG. 2 (d), the paper container in which some of the contents have been taken out is returned to the original final folding, and the upper folding side wall 3A is once shown in FIG. 3 (e).
3f, and then, as shown in FIG. 3 (f), fold back in the opposite direction at the diagonal folding line 12 and push into the interior of the paper container, and after the state of FIG. ) Can be resealed as shown.

FIG. 4 is an explanatory view of the procedure for reopening the semi-solid paper container according to the present invention. 4 (i), (j),
It can be easily opened by following the procedure in (k). When resealing the once resealed paper container according to the present invention shown in FIG. 4 (i), the upper folding side wall 3A once pushed into the container is pulled out to the front, but it is difficult for the fingers to catch it.
It is preferable to use the pull tab T as a supplement.

FIG. 5 shows a cross section of a paper container laminate with the same specifications as the simplest and most economical milk carton for use in the semi-solid paper container according to the present invention. That is, polyethylene is extrusion coated on both sides of the bleached kraft paper layer 21 to form the polyethylene layer 22. This laminated structure is not limited to three layers and can be freely changed according to the contents. Providing a gas barrier layer such as an ethylene-vinyl alcohol copolymer and an aluminum foil has no technical problem. Absent. However, it is necessary to consider the cost.

The equipment for the manufacturing, molding, filling and sealing steps of the blank of the semi-solid paper container according to the present invention can be used as it is, except for the filling, for the equipment of the gable top carton for liquid which has been conventionally used.

The semi-solid paper container according to the present invention is suitable for foods such as yogurt, soft ice cream, soft margarine, etc., but can also be sufficiently used for industrial applications such as medicine, medical care and water-based paint. .

The semi-solid paper container according to the present invention, which is mainly composed of paper, can be crushed after use to reduce its volume and then can be disposed of as burning dust, thus having an effect of reducing environmental load. Side wall panel 3
The inverted Y-shaped fold line provided in D has the effect of facilitating the crushing of the paper container.

(Example) The semi-solid paper container according to the present invention was applied to yogurt to have an internal volume of 500 ml. As the laminated material used in this example, a laminated material having the following laminated structure manufactured by Weyerhaeuser Co., which has been used as a milk carton so far, is used as it is. That is, in order from the surface, polyethylene 15 μm / bleached kraft paper 450 μ
m / polyethylene 29 μm. The total basis weight is 400 g / m ² . Gravure printing of 5 colors was performed on the surface side polyethylene layer 22 of this laminated material, and half cut 7 was performed in the next blank punching step.
A, 8A, and 14 were performed at the same time as other folding line processing. After the blank 20 obtained by performing the above-mentioned processing is cylinder-bonded by the same cylinder-bonding machine as the conventional one, molding, filling, and sealing are performed by the milk molding-filling machine in which only the filling portion is changed to yogurt. The yogurt could be filled into the semi-solid paper container according to. When this product was randomly extracted and opened, resealed, and reopened according to the procedure described above, all of them could be easily performed. Further, in the opened state, the yogurt could be easily taken out with a spoon or the like like the conventional cup-shaped container.

The semi-solid paper container according to the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the gist of the present invention. For example, the horizontal cross section of the paper container is drawn as a square, but it may be rectangular, and the pull tab may have any shape as long as it has peeling and pulling functions.

[0019]

According to the present invention, the opening of the gable top carton can be largely opened and the position thereof can be lowered so as to be in the opened state even though it has the same shape as the one-piece liquid paper container. Since it can be fixed with, it becomes easy to take out the contents with a spoon or the like like a conventional cup-shaped container. Further, the once opened opening can be pushed inside the container to be resealed, and reopening can be easily performed. Further, the container can be carried by holding the top seal portion which is a rib. In this way, it is not necessary to separately prepare a lid, and the pull tab that is an auxiliary means for opening is also a part of the carton blank.
Since it is not necessary to incorporate other members or to process them in advance, and the conventional blank manufacturing method for liquid paper containers, molding, filling, and sealing methods can be used as they are,
The manufacturing cost can be reduced as compared with a conventional two-piece or three-piece container including a lid or a body, a seal, and a lid. Further, since it is made of a material mainly composed of paperboard, it is easy to dispose of it after use, and it has an effect of reducing the environmental load.

[Brief description of drawings]

[Figure 1] Blank development view

FIG. 2 is an explanatory diagram of an opening procedure.

FIG. 3 is an explanatory diagram of a resealing procedure.

FIG. 4 is an explanatory diagram of a reopening procedure.

FIG. 5 is a sectional view of a laminated material.

FIG. 6 is an explanatory diagram of a pull tab.

[Explanation of symbols]

 1A, 3A Upper folding side wall (upper side wall) 2A, 4A Roof part (upper side wall) 1 to 4B Bottom part 1 to 4D Body part side wall panel 1H to 4H Rib (top seal part) 5A, 5B Heat sealing part for tube attachment 5D, 5H Heat sealing part for tube attachment 7A, 8A Weak line 6-11 Folding line 12 Diagonal folding line 12 'Diagonal folding line forming opening 13 Diagonal folding line 14 Half cut 15-18 Folding line 19 Tape 19' Stopper 20 Carton blank 21 Paperboard layer 22 Polyethylene layer A Gable roof molding part B Bottom molding part D Body molding part M Opening part T Pull tab

Claims (3)

[Claims] 1. A gable roof part is connected to an upper end of a quadrangular prism-shaped body part composed of four body part side wall panels via a fold line,
The gable-shaped roof part folds the opposite upper folding side walls inward along diagonal fold lines, respectively, and folds the remaining opposing upper side walls inward so that the upper end ribs sandwich the upper folding ribs of the upper folding side wall. In a paper container formed by polymerizing and heat-sealing this polymerized portion, a tearable weakening line is provided between one surface of the upper folded side wall and the adjacent upper side wall. Characteristic semi-solid paper container. 2. An inverted Y-shaped fold line is formed in a central portion of a body side wall panel that is connected to the upper folded side wall sandwiched by the weakening lines via the fold line. Semi-solid paper container. 3. A pull tab having a shape in which a lower portion is closed and an upper portion is opened, on an upper folding side wall sandwiched by the weakening lines or straddling an uppermost portion of a body side wall panel connected to the upper folding side wall via a folding line. To divide the area
A half-cut is formed from the front side of the paper container laminate, a pull tab is formed which can be peeled from the lower part of the pull tab region, and a peel stop means is provided on the upper part of the pull tab region. Item 3. A semi-solid paper container according to item 2.