JP2000109047A - Conical packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable unsealing to be done excellently at a predetermined position as tear is carried out along an unsealing means from a lateral end part by forming an unsealing means ranging straight from one lateral end part to another lateral end part in a blank plate state. SOLUTION: A folding fan-shaped blank plate having lateral end parts 2a, 2b is formed by punching out a laminated body comprising an exterior surface plastics layer, a paper layer, and an interior surface plastics layer, and a tab 4 is provided in a manner projecting outward to one lateral end part 2a, followed by forming two-straight cut lines 5 in substantially parallel to an arcuate end periphery reaching from both the ends of the tab 4 to the lateral end part 2b. Then, it is wrapped conically so that one lateral end part 2a is overlapped on the other lateral end part 2b to subsequently be adhered between the lateral end part 2a and lateral end part 2b by an adhesion part 3. In this way, when the tab 4 formed at the lateral end part 2b is nipped and pulled laterally, a laminated body can be teared along the cut lines 5, and unsealing can be performed in a state where a part above the cut lines 5 is cut away excellently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a conical packaging container used for packaging frozen desserts, confectionery and the like.

[0002]

2. Description of the Related Art Heretofore, as a blank plate used for producing a conical packaging container, for example, a laminated plate composed of a printing layer / aluminum foil / paper / polyethylene has been generally used. In the case of this configuration, it is easy to tear the blank plate, so that the blank plate can be torn from any side end and opened.However, there is a disadvantage that the tearing position is shifted and it cannot be opened cleanly. In addition, because of the laminated structure including the aluminum foil, there is a disadvantage that a metal detector for preventing foreign matter from being mixed cannot be used when filling and packaging the contents. In addition, there is a drawback in that since it contains aluminum foil, there is a problem in the disposal of used packaging materials. As a configuration of the blank plate not using the aluminum foil, for example, a configuration in which the aluminum foil is replaced with a biaxially stretched plastic film such as a biaxially stretched plastic film / printing layer / paper / polyethylene is considered. In the case of a blank plate using an axially stretched plastic film, since the biaxially stretched plastic film has high strength, it is difficult to tear and the tearing position is shifted, so that it is difficult to cleanly open at a predetermined position. was there.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a conical packaging container which can be neatly opened at a predetermined position by tearing from a side end.

[0004]

Means for Solving the Problems One side end and the other side end of a fan-shaped blank plate made of a laminate having an outer plastic layer, a paper layer, and an inner plastic layer are overlapped and bonded. In the conical packaging container, the conical packaging container has a configuration in which the unsealing means is formed so as to extend linearly from one side end to the other side end in the state of a blank plate. , The laminate can be torn along the opening means, and the laminate above the opening means can be cut out and opened.

[0005] In the above conical packaging container, the opening means is formed by two continuous cuts or dashed cuts formed at predetermined intervals in the paper layer and parallel to each other, so that the paper layer is straightened during the manufacturing process. Since the operation of forming continuous cuts or broken cuts is facilitated, it is possible to efficiently manufacture.

In the above conical packaging container, a tab is formed at a position corresponding to the opening means on one side end of the blank plate, so that the tab is grasped and the laminated body is formed along the opening means. Can be easily opened by tearing.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a plan view showing a blank plate of the embodiment, FIG.
FIG. 4 is a sectional view taken along the line II in FIG. 2, FIG. 4 is a perspective view showing the unsealing state of the embodiment, FIG. 5 is a view showing the shape of a cut for forming the unsealing means, and FIG. FIGS. 2A and 2B are plan views showing wide-width paper for explaining
Is a side end, 3 is an adhesive part, 4 is a knob, 5 is a cut, 6 is a punching position, 10 is a laminated body, 11 is an outer plastic layer, 12 is an adhesive layer, 13 is a paper layer, and 14 is an inner plastic layer. , 15 each represent a printed layer.

FIG. 1 shows an embodiment of a conical packaging container of the present invention.
FIG. 2 comprising the laminate shown in FIG.
1 is manufactured using the blank plate 1 shown in FIG.
As shown in FIG. 1, the conical packaging container
The side plate 2 shown in (1) is wound in a conical shape with the side end 2a superimposed on the upper surface of the side end 2b, and has a conical shape in which the side end 2a and the side end 2b are bonded by the bonding part 3. Side end 2a and side end
Opening means consisting of two parallel cuts 5 formed at a predetermined interval and formed in a linear shape connecting between 2b is formed,
The knob 4 is provided at a position corresponding to the cut 5 of the side end 2a. The cut 5 is a straight continuous cut or a broken cut.

A blank plate for manufacturing the conical packaging container according to the embodiment has a shape shown in FIG. 2, has a fan shape having a side end 2a and a side end 2b, and has one side end 2a. A knob 4 protruding outward is provided on the rim, and two linear cuts 5 substantially parallel to an arc-shaped edge reaching the side end 2b from both ends of the knob 4 are formed.

As shown in FIG. 3, the cross section of the blank plate where the cut 5 is formed has a structure in which an outer plastic layer 11, an adhesive layer 12, a paper layer 13, and an inner plastic layer 14 are laminated in this order from the outer surface. The paper layer 13 has a cut 5 penetrating therethrough, and the print layer 15 is formed on the inner surface of the outer plastic layer 11. In the present embodiment, the cut 5
Is the paper layer constituting the laminate 10 for producing a blank plate
13 is provided so as to penetrate the paper layer 13
And the inner plastic layer 14 may be formed. In that case, it is easy to adjust the curl state of the laminate 10 in the step of manufacturing the laminate 10 for producing a blank plate.

[0011] The blank plate shown in FIG.
Is wound conically so as to overlap the other side end 2b,
By bonding the side end 2a and the side end 2b with the bonding portion 3, the conical packaging container of the embodiment shown in FIG. 1 is obtained.
In order to bond the side end 2a and the side end 2b, they are bonded using a hot melt adhesive, or a heat adhesive resin is applied to the inner surface of the side end 2a or the outer surface of the side end 2b. It can be performed by a method of bonding by thermal bonding. In the state shown in FIG. 1, the notch 5 is formed continuously from the knob 4 formed on the side end 2a to the side end 2b. Since the laminate can be torn along the cut 5 from the upper and lower edges of the portion 4, the laminate can be opened neatly.

The state in which the conical packaging container of the embodiment is opened is as shown in FIG. 4. The grip 4 formed on the side end 2a is gripped and pulled in the lateral direction to cut the laminate into the cut 5 Can be torn along, so that the portion above the cut 5 can be opened with a clean cut. In FIG. 4, the conical packaging container is illustrated with the mouth opened, but in reality, the conical packaging container is filled with contents, and the conical packaging container is thermally bonded in a state where the mouth is folded in a Y-shape. It has been sealed.

The shape of the cut is not particularly limited as long as it is formed in a linearly continuous state, but the cut shown in FIG. 5 can be used. FIG. 5 (a) is a linear continuous cut,
It can be formed by making a cut in a roll-shaped paper as a paper layer in the flow direction with a razor blade or the like. FIG.
(B) is a linear broken line cut line, which can be formed by a disk-shaped sewing blade having a cutting edge formed intermittently at the outer peripheral end. FIG. 5 (c) shows a shape in which the front end portions of the straight dashed cut lines in the opening direction are bent inward, and can be formed by a disk-shaped blade having a cutting edge formed intermittently at the outer peripheral end. it can. Regardless of the shape of the cuts, the cuts are formed linearly in the flow direction of the rolled paper as the paper layer, so that the workability in manufacturing is extremely improved. As the shape of the cut, the shape shown in FIGS. 5A to 5B is particularly preferable in view of workability.

External plastic layer constituting blank plate
A biaxially oriented plastic film such as biaxially oriented polyethylene terephthalate and biaxially oriented polypropylene is used as 11, and a polyolefin such as polyethylene and polypropylene is used as the inner plastic layer 14.
As the adhesive layer 12, a urethane-based adhesive is used when the outer plastic layer 11 and the paper layer 13 are laminated by dry lamination, and a polyethylene is used when the outer plastic layer 11 and the paper layer 13 are laminated by extrusion lamination. The printing layer 15 is provided by gravure printing or the like on the inside of the biaxially stretched plastic film to be the outer plastic layer 11. The lamination structure of the blank plate is, for example, 9 to 12 μm of biaxially stretched polyethylene terephthalate / printing layer / urethane adhesive or 15 to 20 μm of polyethylene / 50 to 85 g of paper / 15 to 40 μm of extruded polyethylene.

A blank plate is prepared by printing a predetermined pattern on one surface of a biaxially stretched polyethylene terephthalate film or the like to be an outer plastic layer, and then printing the printed surface of the biaxially stretched polyethylene terephthalate film and a paper such as coated paper. The layers are laminated by dry lamination using a urethane-based adhesive as an adhesive layer, or extrusion lamination using polyethylene as an adhesive layer.
At the time of feeding the paper layer in the laminating step, as shown in FIG. 6, a predetermined position corresponding to the punching position 6 which is finally punched into a fan shape on a roll-shaped wide paper serving as the paper layer, A cut is formed linearly in the paper flow direction by using a cutter blade or a disk-shaped cutting blade, and the cut is formed in the laminating step. Next, an inner plastic layer made of polyethylene or the like is laminated on the surface of the paper opposite to the surface on which the biaxially stretched polyethylene terephthalate film is laminated by extrusion lamination to produce a laminate for a blank plate.
In the case of forming a cut through the paper layer and the inner plastic layer, when the inner plastic layer made of polyethylene or the like is extruded on the paper layer,
The outer plastic layer is formed on the paper surface while forming a cut through the laminate of the paper layer and the inner plastic layer.
It can be manufactured by laminating an axially stretched polyethylene terephthalate film or the like. A blank plate is prepared by punching the obtained laminate into a fan shape at a predetermined position. As shown in FIG. 6, the cuts can be formed at predetermined positions in a state where the blanks are punched into a fan-shaped blank plate only by forming the cuts in a straight line by imposing the blank plate.

[0016]

According to the present invention, one side end and the other side end of a fan-shaped blank plate made of a laminate having an outer plastic layer, a paper layer, and an inner plastic layer are overlapped and bonded to form a cone. In the packaging container, since it is a conical packaging container having a configuration in which the opening means that is linearly continuous from one side end to the other side end in the state of the blank plate is formed, the side end to the opening means The laminate can be torn along, and the laminate above the opening means can be cut clean and opened. In the above-mentioned conical packaging container, the opening means is a continuous continuous cut or a broken cut at a predetermined interval formed in the paper layer and parallel to the paper layer. Since the operation of forming the broken line cuts is facilitated, it is possible to manufacture efficiently. In the above-mentioned conical packaging container, a tab is formed at a position corresponding to the opening means on one side end of the blank plate, so that the stack is torn along the opening means by grasping the tab. It can be easily opened.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view showing a blank plate of the embodiment.

FIG. 3 is a sectional view taken along the line II in FIG. 2;

FIG. 4 is an exemplary perspective view showing an opened state of the embodiment;

FIGS. 5A, 5B, and 5C are views showing shapes of cuts forming opening means. FIGS.

FIG. 6 is a plan view showing a wide-width paper for explaining a method of forming the opening means.

[Explanation of symbols]

 2a, 2b side end 3 Adhesive part 4 Knob part 5 Cut 6 Punching position 10 Laminate 11 External plastic layer 12 Adhesive layer 13 Paper layer 14 Internal plastic layer 15 Print layer

Claims (3)

[Claims] 1. A conical shape formed by laminating and bonding one side end and the other side end of a fan-shaped blank plate made of a laminate having an outer plastic layer, a paper layer, and an inner plastic layer. A conical packaging container characterized in that, in the packaging container according to the present invention, the blank plate is provided with an opening means that is linearly connected from one side end to the other side end. 2. The conical packaging container according to claim 1, wherein the opening means comprises two continuous cuts or broken cuts formed at predetermined intervals in the paper layer and parallel to each other. 3. The conical packaging container according to claim 1, wherein a knob is formed at a position corresponding to the opening means on one side end of the blank plate.