JP2020015507A - Package - Google Patents

Abstract

To provide a package used for conically wrapping the content, wherein the package is capable of being opened conveniently for taking out the wrapped content without causing only the surface of the wrapping paper peeled off when it is ripped open from a tip side extending from an adhered part running along the outer end.SOLUTION: A conical package (1) is constituted of a laminated sheet (2) which at least includes a base paper layer (21), an outermost front sealant layer (23) and an innermost back sealant layer (22). The laminated sheet is fan-shaped with an arc (3) and two radii (4) thereof. The front sealant surface of one radius and the back sealant surface of the other radius are overlapped along the two radii of the arc and adhered to each other to constitute a back sealed part (5) of the conical package (1). Beside the back sealed part, there is formed a half-cut part (6) running in parallel therewith.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a conical package for packaging ice cream and the like, for example.

A fan-shaped laminated sheet is rolled up, the two radial ends are overlapped, fused or glued together to form a conical package, and ice cream containers, popcorn, french fries It is also used as a container.
Especially in the case of ice cream, the laminated sheet and the contents are packaged in close contact, so when the food is consumed and the contents are running low, the upper laminated sheet must be cut off to make it easier to take out. There is.
In addition, if the upper end is opened, if it is to be sealed, if the package is fused or bonded with the upper end faces, or if the contents are eaten, be sure to cut open the vicinity of the upper and lower ends. It is necessary to open the upper part so that it can be taken out.

For example, in Patent Document 1,
After winding a substantially fan-shaped packaging material including a base film layer, which is the outermost layer, a paper layer, and a thermoplastic resin layer, which is the innermost layer, into a conical shape, a paste formed along the outer side edge portion. A conical package formed by overlapping and attaching the attachment portion to an adhesion portion formed along the inner side end portion,
A plurality of bent cutting lines are formed radially around the apex of the cone, at the seal end portion of the sticking portion constituting the conical tip,
In a state in which all the bending cut lines formed in the seal end portion are mountain-folded and the adhesive portion is rolled up along the adhesive portion, the adhesive portion and the adhesive portion are adhered,
A conical package is proposed in which the angle between the adjacent bending cut lines is smaller on the tip end side of the seal end portion than on the upper side of the seal end portion.

However, when such a conical package is opened, if the user grips the side end on the side of the sticking portion and opens it, as shown in FIG. 4, the inner side end has heat inside the outer side end. Along with the plastic resin layer, the paper layer peeled between the paper layers also tends to cause long paper peeling remaining at the inner side edge.
That is, at the time of fusion, the fan-shaped radial portions are fused to each other at the back seal portion 5 as shown in FIG.
When the unsealing knob formed by the notch in the unfused portion beside the back seal portion is pulled up, as shown in FIG. The upper back sealant layer 22 is easily broken at the boundary with the attachment portion 52. When the back sealant layer 22 breaks, the inside of the paper base material layer 21 of the upper laminated sheet 2 is delaminated, so that the delamination starts. When the opening knob 7 is further pulled up, the delamination of the paper base layer 21 proceeds more easily than the sealant layer that is hard to break as shown in FIG. 4-3.
When the delamination of the outer paper base layer 21 proceeds over a long distance, as shown in FIG. 4-4, the delamination progresses longer than the inner end face, and in some cases, becomes large enough that the paper cannot be sufficiently opened. This was a major problem, for example, paper members could remain.

Japanese Patent No. 5810523

  Therefore, the present invention, after winding up in a conical shape, grasping the end side from the sticking portion formed along the outer side end, when tearing open, do not peel off the paper, so that it is easy to take out It is an object of the present invention to obtain an openable package.

The package of the present invention,
At least a paper base material layer, an outermost surface sealant layer, and an innermost back sealant layer, a package comprising a laminated sheet having:
The laminated sheet has a circular arc and a sector shape including two radii of the circular arc,
A conical package formed by overlapping a front sealant surface of one radius and a back sealant surface of another radius along two fan-shaped radii to form a fused back seal portion. hand,
A package body characterized in that a half cut is provided parallel to the back seal portion at the back seal portion.

  The package of the present invention is provided with a half-cut along the radius at the time of the back seal, so that when peeling and opening while tearing from the overlapped outer end face, the paper is not peeled off and is stably opened. A possible package can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is the external appearance perspective view of the package which concerns on this invention, and the development view which shows the blank of a package. It is an expanded sectional view in a back seal part in a 1st embodiment of a package concerning the present invention before peeling, a peeling process, and after peeling. It is an expanded sectional view in a back seal part in a back seal part in a 2nd embodiment of a package concerning the present invention before peeling, a peeling process, and after peeling. It is an expanded sectional view in the back seal part in the example of the conventional embodiment of a package before exfoliation, the exfoliation process, and after exfoliation.

An embodiment of the package of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of a package according to the present invention and a developed view showing a blank of the package.
The package 1 of the present invention is composed of a laminated sheet 2 having at least a paper base material layer, an outermost surface sealant layer, and an innermost back sealant layer.
As shown in FIG. 1-2, the blank 20 made of the laminated sheet 2 is formed of a circular arc 3 and a sector surrounded by two radii 4 of the circular arc.
Furthermore, the package body of the present invention winds a fan-shaped blank around three arcs, and along the two radii 4, the front sealant surface of one radius 4 and the back sealant surface of the other radius 4 are formed. The overlapped sealants are welded to each other to form a back seal portion 5. When the sealant layers are fused together in this manner, a conical package 1 as shown in FIG. 1-1 is formed.

A half cut 6 parallel to the back seal 5 is provided near the back seal of the package.
FIG. 2-1 is a cross-sectional view of the back seal portion in the first embodiment, showing a state before peeling.
In the first embodiment, a half cut 6 parallel to the back seal 5 is provided along the inside of the back seal 5 on the back surface of the end of the laminated sheet 2 fused to the outer surface of the back seal. .

In the package of the first embodiment, when the unsealing knob 7 formed by the notch is pulled up at the unfused portion beside the back seal portion, the sealant layer 22 is formed at the end of the back seal portion 5.
The sealant layer 22 is easily broken at the boundary between the fused portion 51 and the non-fused portion 52.
When the lower front face side sealant layer 23 is broken, there is little problem, but as shown in FIG. 2-2, the upper inner face side sealant layer 22 may be broken.
When the upper inner surface side sealant layer 22 is broken, the inside of the paper base layer 21 of the upper laminated sheet is delaminated, so that the separation starts.

However, as shown in FIG. 2-3, since the half cut 6 is provided along the inside of the back seal portion 5 on the back surface of the end of the laminated sheet fused to the outer surface side of the back seal portion 5, The back sealant layer 22 at the end of the laminated sheet is not connected. For this reason, when the paper base layer 21 that has been delaminated reaches half-cut, the separation ends there.
For this reason, as shown in FIG. 2-4, no larger paper peeling 211 occurs from the half cut 6 position.

  FIG. 3-1 is a second embodiment example, in which a half cut 6 parallel to the back seal portion 5 is provided on the outer surface of the end of the laminated sheet 2 fused to the inner surface side of the back seal portion, and on the outside of the back seal portion 5. It is provided along.

In the package according to the second embodiment, when the unsealing knob 7 formed by the notch in the unsealed portion beside the back seal portion 5 is pulled up, the outer back sealant is formed at the end of the back seal portion 5. The front sealant layer 23 of the laminated sheet 2 fused to the inner surface side is pulled by the fusion portion 51 with the layer 22.
At this time, the back sealant layer 22 of the outer laminated sheet and the front sealant layer 23 of the inner laminated sheet are pulled, but the front sealant layer 23 of the inner laminated sheet is cut by the half cut 6 at the time of the fused back seal portion. Is already cut.
For this reason, as shown in FIG. 3B, the paper base material layer 21 below the inner (lower) front sealant layer 23 is pulled by the front sealant layer 23, and peeling between layers starts.

However, as shown in FIG. 3C, the laminated sheet 2 fused to the inner surface has almost no extra length from the fused portion, and the paper base layer 21 ends at the inner end surface. Then, when the paper base material layer 21 that has been delaminated reaches the end face, the delamination ends.
For this reason, as shown in FIG. 3D, no larger paper peeling 211 occurs from the half-cut 6 position.

  The laminated sheet constituting the package of the present invention includes at least an outermost surface film layer, a paper base material layer, and an innermost sealant layer.

As the paper base layer, paper such as art paper or coated paper having a basis weight of 50 to 200 g / m ² and a density of 0.6 to 1.1 g / cm ³ is used. If possible, short-fiber paper is preferred because it must be torn. The basis weight is adjusted according to the amount of the contents.
A desired printing pattern such as a character, a figure, a symbol, and a pattern may be formed on the surface of the paper base material layer using a normal coating method, a printing method, or the like.
In printing, a desired printing pattern can be printed on the front side of the paper base material by a printing method such as gravure printing, offset printing, letterpress printing, screen printing, transfer printing, flexographic printing, or the like.

A barrier layer may be provided between the paper base material layer and the back sealant layer. The barrier layer imparts a high water vapor barrier property and a high gas barrier property to the conical package 1 when the enclosed content is easily changed by moisture or oxygen. Basically, as the barrier layer 23, a metal vapor-deposited film or a metal oxide vapor-deposited film can be provided in combination with a metal foil such as aluminum or an undercoat.
In the case of a metal foil, it is formed in the range of 5 to 30 μm, and in the case of a vapor-deposited film, for example, in the range of about 50 to 2000 °, preferably about 100 to 1000 °, although it varies depending on the type of metal or metal oxide used. .

  Sealant layers such as a front sealant layer and a back sealant layer are made of a thermoplastic resin having a high fusibility. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, ethylene / α-olefin copolymer, polypropylene, ethylene / vinyl acetate copolymer, ionomer resin, ethylene / ethyl acrylate copolymer One or two or more mixed resins selected from coalesced coal, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, polymethylpentene and the like can be used.

As a method of manufacturing a laminated sheet, the laminated sheets may be bonded by an extruder lamination machine using a T-die. Further, the sealant layer formed into a film by an inflation extruder may be bonded by a dry lamination machine or an extruder lamination machine.
The thickness of the sealant layer is preferably from 12 μm to 100 μm, particularly preferably from 20 μm to 60 μm.

Next, a method for manufacturing the conical package 1 of the present invention will be described. First, a wide rolled laminated sheet material is manufactured. Next, the blanks 20 as shown in FIG. 1-2 are imposed so as to be arranged linearly in the flow direction of the raw material, and are punched out with a big blade or a roll blade or a press die.
The punched blank laminated sheet 2 is rolled along a conical jig so that both ends of an arc portion and two radius portions are overlapped, and the overlapped back seal portion is pressed with a heat seal bar or the like. It is manufactured by fusion.
The filling of the package is performed by filling the contents from the opening 8 formed by the arc 3 and quenching, and covering the opening 8 with a cap formed by vacuum forming a polyethylene terephthalate sheet or the like, or The formed laminated sheet is formed into a lid, and the periphery of the opening 8 is sealed by a method such as fusion.

A method of opening the conical package 1 manufactured as described above will be described with reference to FIG.
In order to open, the tip of the opening knob 7 composed of the unfused portion 72 and the cut 71 is raised from the periphery along the radius 4 fused to the outer surface side of the back seal portion 5 in FIG. The grip 7 is grasped by hand, and first, the outer laminated sheet end is peeled off from the welded back seal 5, and the contents are exposed while tearing the side surface of the package 1 as it is. When the side surface is cut circumferentially, the contents are exposed and the contents can be eaten.
In order to cut the side surface neatly and circumferentially, a rupture line 73 formed by a perforation or a half-cut line may be provided spirally starting from the cut 42.
Also, the cuts 71 and the break lines 73 may be provided at a plurality of locations so that the surface to be opened can be enlarged by sequentially tearing.

The package of the present invention is as described above, and by simply providing a half cut along the back seal portion, it is possible to prevent a paper tear and to obtain a package that can be easily opened.
It can be manufactured simply by adding the added half-cut blade to the punching blade when pressing and pulling the outer shape without changing the manufacturing process, so it is highly productive and manufactured with general-purpose inexpensive packaging equipment The advantages of the present invention, such as being possible, are great.

1 Package 2 Laminated film 20 Blank 21 Paper base layer 211 Paper peeling 22 Back sealant layer 23 Front sealant layer 3 Arc 4 Radius 5 ... Back seal part 51 ... Welding part 52 ... Unwelded part 6 ... Half cut 7 ... Opening knob part 71 ... cut 72 ... unwelded part 73 ... break line 8 ... opening

Claims (4)

At least a paper base material layer, an outermost surface sealant layer, and an innermost back sealant layer, a package comprising a laminated sheet having:
The laminated sheet has a circular arc and a sector shape including two radii of the circular arc,
A conical package formed by overlapping a front sealant surface of one radius and a back sealant surface of another radius along two fan-shaped radii to form a fused back seal portion. hand,
A package body provided with a half cut parallel to the back seal at the back seal portion.   The package according to claim 1, wherein the half cut is provided along the inside of the back seal portion on the back surface of the end of the laminated sheet fused to the outer surface side of the back seal portion.   2. The package according to claim 1, wherein the half cut is provided along an inner surface of the back seal portion on a front surface of an end portion of the laminated sheet fused to an inner surface side of the back seal portion. 3.   The package according to any one of claims 1 to 3, further comprising a knob portion including an unfused portion and a cut along a radius fused to an outer surface of the back seal portion.

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