JP2004331169A - Wrap unsealing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wrap unsealing device with which an overlap wrapping body using a gas-barrier wrapping material can easily be unsealed. <P>SOLUTION: The wrap unsealing device is a resin formed body that is formed from a plastic material such as polypropylene or polyethylene and has a certain degree of stiffness. The wrap unsealing device is attached to the surface of the wrapping material of the overlap wrapping body and to a part where a space is defined between a wrapped item and the wrapping material. The device includes a pair of stiff pieces 11 and 12 that are continuous to each other via a hinge 13. The stiff pieces 11 and 12 have a pair of wrapping material breaking claws 11a and 11b and a pair of wrapping material breaking claws 12a and 12b, respectively, which face each other so that they mesh. An adhesive layer is formed in the projecting areas of the wrapping material breaking claws 11a and 11b and 12a and 12b over the entire width of the rear faces of the stiff pieces 11 and 12. When kept adhering to the wrapping material, the wrapping material breaking claws 11a and 11b and 12a and 12b are joined to the wrapping material with a certain degree of adhesive strength. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrap opening device attached to a surface of a packaging material in an overlap package to open the overlap package.
[0002]
[Prior art]
Conventionally, for products including cups such as instant noodles in cups and products such as lunchboxes stored in containers formed of plastic sheets, a state in which overlap packaging is performed using a packaging material formed of a shrink film. However, in such an overlapped package, it is difficult to easily break the packaging material and open it because the packaging material such as a shrink film is in close contact with the packaged object.
[0003]
Therefore, in such an overlap package, for example, as shown in FIG. 15, a "V" -shaped cut 61 is formed in advance on the packaging material S, and the adhesive layer is formed so as to cover the cut 61. When the opening tack label 70 having the knob 71 not formed is adhered to the packaging material S, and the overlap package is opened, the knob 71 of the tack label 70 is gripped and the tack label is removed. When the 70 is peeled off from the packaging material S, the packaging material S is broken at the V-shaped width while only the “V” -shaped cut portion is adhered to the tack label.
[0004]
[Patent Document 1]
JP-A-11-342975
[Problems to be solved by the invention]
By the way, in recent years, in the case of a product to be subjected to overlap packaging, which is likely to be degraded such as food, a shrink film having a gas barrier property is used as a packaging material, and the packaging material in the overlap packaging body is used. To prevent deterioration of the packaged object by filling the space formed between the packaging material and the packaged object with nitrogen gas, etc. when performing overlap packaging so that oxygen does not enter inside. Has been proposed.
[0006]
Therefore, in the overlap package using a shrink film having such a gas barrier property, from the viewpoint of preventing oxygen from entering, it is not possible to form a “V” -shaped cut in the packaging material in advance, There is a problem that the conventional opening method as described above cannot be adopted.
[0007]
In particular, shrink films having gas barrier properties usually have a multi-layer structure having a surface layer formed of a polyamide resin or the like having high mechanical strength so that pinholes and the like do not easily occur. It is expected that it will be more difficult to open the package as compared with a general overlap package using a shrink film as a packaging material.
[0008]
Therefore, an object of the present invention is to provide a wrap opening tool that can easily open an overlap package using a packaging material having gas barrier properties.
[0009]
Means for Solving the Problems and Their Effects
In order to solve the above-mentioned problem, the invention according to claim 1 is a wrap opening device that is attached to a surface of a packaging material in the overlap package to open the overlap package. And a pair of rigid pieces connected to each other via one of the rigid pieces, and one of the rigid pieces has a packaging material breaking claw projecting to the other rigid side, and the packaging material breaking claw and both sides thereof are formed of the packaging material. What provides a wrap opening tool characterized in that an adhesive layer is formed on at least the overhang area of the packaging material breaking claw on the back surface of both of the rigid pieces so as to be attached to the material. It is.
[0010]
The wrap opening device configured as described above, in a state where it is attached to the surface of the packaging material in the overlapped package, pulls up the end of one of the rigid pieces having the packaging material breaking claws, and When the piece is raised with the hinge as a fulcrum with respect to the other rigid piece, the packaging material breaking claw projecting to the other rigid one side pierces the packaging material, and the portion of the packaging material attached to the packaging material breaking claw is A part is cut off from the surroundings, thereby forming a cut in the packaging material. At this time, since both sides of the packaging material breaking claw in the other rigid piece are stuck to the packaging material, a portion of the packaging material where the packaging material breaking claw pierces is difficult to escape, and the packaging material breaking claw is securely attached to the packaging material. You will be pierced.
[0011]
Here, by switching from one rigid piece to the other rigid piece and moving the wrap opening tool to one rigid side while peeling off the wrapping opening from the surface of the packaging material, a state in which the wrapper is adhered to the back surface of the packaging material breaking claw The part of the packaging material that is partially separated from the surroundings is pulled by the packaging material breaking claw and moved without being peeled from the packaging material breaking claw, so that the packaging material is subsequently broken Will be.
[0012]
As described above, this wrap-opening device raises one rigid piece, and then moves to one rigid side while peeling off the wrap-opening device from the surface of the packaging material by holding the other rigid piece. By performing the opening operation, it is possible to easily open the overlap package using a gas barrier material that is difficult to open without forming a cut in the packaging material in advance.
[0013]
Further, as in the invention according to claim 2, in order to open the overlap package, a wrap opening device attached to a surface of a packaging material in the overlap package, wherein the wrap opening device is mutually connected via a hinge. A pair of rigid pieces provided in series, each of the rigid pieces having one or more packaging material breaking claws projecting toward the other rigid side so as to mesh with each other; A wrap opening tool in which an adhesive layer is formed on at least the overhang region of the packaging material breaking claw on the back surface of both of the rigid pieces so that the breaking claw and both sides thereof are attached to the packaging material. In the above, by raising a rigid piece having two or more packaging material breaking claws, a cut similar to that when the other rigid piece is raised is formed in the packaging material. By moving to the other rigid side as it is, Without Mochikaeru rigidity piece, it can be easily opened overlapping package.
[0014]
In particular, in the case where both of the rigid pieces each have two or more packaging material breaking claws as in the wrap opening device of the invention according to claim 3, either rigid piece may be raised. In addition, the overlap package can be easily opened without holding the rigid piece.
[0015]
Further, when one of the rigid pieces is raised with respect to the other rigid piece with the hinge as a fulcrum, as in the case of the wrap opening device of the invention according to claim 4, both rigid pieces are mutually connected. In what is to be separated, regardless of whether both rigid pieces have packaging material breaking claws, after raising the rigid piece having packaging material breaking claws, By moving the raised rigid piece in a direction away from the other rigid piece, the overlap package can be easily opened without changing the rigid piece.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. The wrap opening device 1 shown in FIGS. 1 to 4 is for opening an overlap package obtained by performing an overlap package on a package using a packaging material made of a shrink film. It is designed to be attached to the surface of the packaging material. As the shrink film, a polypropylene (PP) or polyethylene (PE) film (for example, PP / EVOH / PP) in which a gas barrier resin such as an ethylene vinyl alcohol copolymer (EVOH) or a polyamide resin having a gas barrier property is laminated. Laminated film) or the like, or a single-layer film of PP or PE can be used.
[0017]
The wrap opening device 1 is a resin molded body having a certain degree of rigidity formed of a plastic material such as polypropylene, polyethylene, or polystyrene, and is connected to each other via a hinge 13 as shown in FIGS. It has a pair of rigid pieces 11 and 12 provided.
[0018]
The rigid pieces 11, 12 have a thickness of about 0.3 to 2.0 mm, and have two pairs of packaging material breaking claws 11a, 11b, 12a, 12b facing each other so as to mesh with each other. ing. The minimum thickness of the hinge 13 is set to 0.02 to 0.5 mm.
[0019]
As shown in FIGS. 3 (a), 3 (b) and 4, the back surfaces of the rigid pieces 11, 12 are stretched over the entire width of the rigid pieces 11, 12 by the tension of the packaging material breaking claws 11a, 11b, 12a, 12b. An adhesive layer 14 coated with an adhesive is formed in the exit region, and in a state where the wrapper 1 is stuck to the packaging material, the packaging material breaking claws 11a, 11b, 12a, 12b and the packaging material It is designed to be adhered with adhesive strength. Note that the hatched portion in FIG. 4 indicates a region where the adhesive layer 14 is formed.
[0020]
As shown in FIG. 5, the wrap opening device 1 configured as described above is a surface of the packaging material R in the overlapped packaging body, and a space is formed between the packaged object and the packaging material R. Affixed to the part.
[0021]
In order to open the overlap package using the wrap opening device 1 stuck on the surface of the packaging material R as described above, first, as shown in FIGS. When one of the rigid pieces 11 and the rigid piece 12 is raised (hereinafter, the case where the rigid piece 11 is raised), the tips of the packaging material breaking claws 11a and 11b pierce the packaging material R, and the packaging material R The portions adhered to the material breaking claws 11a and 11b are partially cut off from the surroundings, and accordingly, a V-shaped cut is formed in the packaging material R along the outer edge of the packaging material breaking claw 12a.
[0022]
At this time, both sides (packaging material breaking claws 12a, 12b, etc.) of the packaging material breaking claws 11a and 11b on the other rigid piece 12 are attached to the packaging material R, so that the packaging material breaking claws of the packaging material R Since the portion where 11a and 11b pierce is held in a certain tension state and is hard to escape, the packaging material breaking claws 11a and 11b surely pierce the packaging material R.
[0023]
Subsequently, as shown by an arrow in FIG. 7, the entire wrap opening device 1 is moved toward the rigid piece 12 while the whole wrap opening tool 1 is peeled from the surface of the packaging material R in a state where the raised rigid piece 11 is pinched. A part of the packaging material R which is partially cut off from the surroundings while being attached to the back surface of the breaking claw 12a is pulled by the packaging material breaking claw 12a without being separated from the packaging material breaking claw 12a. As it moves, the packaging material R is subsequently broken into a strip, and the overlapped package is opened.
[0024]
As described above, the wrap opening device 1 forms a cut in the packaging material R by raising one of the rigid pieces 11 and 12, and then peels the wrap opening device 1 from the surface of the packaging material R. Meanwhile, by moving to the other rigid piece 12, 11 side, the overlap package can be easily opened, so that a cut is formed in the packaging material R in advance like a conventional overlap package. There is no need to keep it. Therefore, the present invention is particularly useful as a wrap-opening tool for an overlapped package using a packaging material having a gas barrier property that cannot form a cut in the packaging material R in advance.
[0025]
Further, the wrap opening device 1 has two pairs of packaging material breaking claws 11a, 11b, 12a, 12b opposed to each other so that the rigid pieces 11, 12 mesh with each other. In any case, a similar cut can be formed in the packaging material R, and the wrap opening device 1 is moved while peeling off the wrapping device 1 from the surface of the packaging material R while holding the raised rigid pieces 11 and 12. The opening operation is not complicated.
[0026]
In the above-described embodiment, the back surfaces of the rigid pieces 11 and 12 are in contact with the packaging material R in a state where the rigid pieces 11 and 12 are attached to the packaging material R. For example, as shown in FIG. It is desirable to make a notch in the packaging material, or to bend the rigid piece 11 operated to break the packaging material upward, so that the distal end side of the rigid piece 11 is lifted from the packaging material to make it easy to pick.
[0027]
Also, in the above-described embodiment, the rigid pieces 11 and 12 have the two pairs of packaging material breaking claws 11a, 11b, 12a and 12b facing each other so as to mesh with each other, but are not limited thereto. Instead, for example, as shown in FIG. 9, one rigid piece 21 has one packaging material breaking claw 21 a and the other rigid piece 22 is It is also possible to employ a wrap opening device 2 having two packaging material breaking claws 22a and 22b opposed to each other so as to mesh with the breaking claw 21a.
[0028]
However, in order to continuously perform the operation of forming a cut in the packaging material and the operation of breaking the packaging material with the wrap opening device 2, it is necessary to raise the rigid piece 22 having the two packaging material breaking claws 22a and 22b. When the rigid piece 21 having one packaging material breaking claw 21a is raised, the packaging material is replaced by the other rigid piece 22, as will be described in detail later, in another embodiment. Must be broken.
[0029]
In each of the above-described embodiments, at least one of the pair of rigid pieces has two packaging material breaking claws opposed to each other so as to mesh with the packaging material breaking claw of the other rigid piece. However, the present invention is not limited to this. For example, as shown in FIG. 10, only one rigid piece 31 connected to each other via a hinge 33 projects toward the other rigid piece 32. It is also possible to employ the wrapping opening device 3 having the packaging material breaking claw 31a. In this case, at least the packaging material breaking claw 31a portion of the rigid piece 31 and the both sides of the packaging material breaking claw 31a in the rigid piece 32 It is necessary to form an adhesive layer in advance.
[0030]
However, in order to open the overlap package using the wrap opening device 3, the wrap opening device 3 is attached to the surface of the packaging material R as shown in FIG. As shown in (b), by raising the rigid piece 31 having the packaging material breaking claw 31a, the tip of the packaging material breaking claw 31a is pierced into the packaging material R, and the V shape is formed on the packaging material R along the outer edge thereof. After forming the cut in the shape of a circle, the rigid piece 31 is changed to the rigid piece 32 as shown in FIG. 7C, and the entire wrap opening device 3 is moved to the rigid piece 31 side while peeling off the packaging material R. Accordingly, it is necessary to break the packaging material R into a belt shape. In FIG. 11, reference numeral 34 indicates an adhesive layer.
[0031]
Further, in each of the above-described embodiments, the case where the entire shape is a plane quadrangle has been described. However, the present invention is not limited to this. For example, as shown in FIG. If one of the rigid pieces 41 and 42 has a packaging material breaking claw 41a projecting toward the other rigid piece 42, the whole shape is an elliptical ring. It may be.
[0032]
In each of the above-described embodiments, the packaging material breaking claw of one rigid piece is surrounded by the other rigid piece, and both sides and the front portion of the packaging material breaking claw of the other rigid piece are attached to the packaging material. By doing so, the portion of the packaging material that pierces the packaging material breaking claw is kept in a tensioned state, but at least between both sides of the packaging material breaking claw, it is sufficient that the packaging material can be kept in a tensioned state, For example, as shown in FIG. 13, a rigid piece continuously provided on a rigid piece 51 having a packaging material breaking claw 51 a via a hinge 53 is disposed in a state where it is separated on both sides of the packaging material breaking claw 51 a. It is also possible to use a pair of left and right divided rigid pieces 52A, 52B. In this case, it goes without saying that an adhesive layer must be formed on the entire back surface of the divided rigid pieces 52A and 52B.
[0033]
Further, in each of the above-described embodiments, even if one of the rigid pieces is raised with the hinge as a fulcrum relative to the other rigid piece, the rigid The case in which the pieces are not separated from each other has been described, but the present invention is not limited to this. By opening one of the stiff pieces, the wrap is opened such that the rupture occurs at the hinge portion and the two stiff pieces are separated from each other. It is also possible to adopt a device, and such a wrap opening device can be formed of hard, easily broken polystyrene, acrylonitrile styrene copolymer, polyethylene terephthalate, acrylonitrile butadiene styrene copolymer, or the like.
[0034]
The operation of opening the overlap package with such a wrap opening device will be described by taking the wrap opening device 3 in the form shown in FIG. 10 as an example. As shown in FIG. In the state of being attached to the surface of the packaging material R, by raising the rigid piece 31 having the packaging material breaking claw 31a as shown in FIG. When a V-shaped cut is formed in the packaging material R along the outer edge thereof, a part of the packaging material partially cut off from the surroundings is pasted on the tip of the packaging material breaking claw 31a at that time. In the attached state, the rigid piece 31 and the rigid piece 32 are separated from each other, so that the raised rigid piece 31 is moved away from the other rigid piece 32 as shown in FIG. When it is moved, the packaging material breaks into a belt shape triggered by the formed cut It will be.
[0035]
Therefore, in this type of wrap opening device, only one of the rigid pieces has the packaging material breaking claw, as in the wrap opening devices 3, 4, and 5 shown in FIGS. 10, 12, and 13. Even if there is, after raising one rigid piece, it is possible to continuously open the overlapped package without switching to the other rigid piece.
[0036]
In addition, as the packaging material of the overlap package, it is preferable to use a shrink film having gas barrier properties as described above, but it is also possible to use another film, for example, a stretch wrap film having elasticity and elasticity. It is.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a wrap opening device according to the present invention.
FIG. 2 is a plan view showing the wrap opening device according to the first embodiment.
3A is a cross-sectional view taken along line XX of FIG. 2, and FIG. 3B is a cross-sectional view taken along line YY of FIG.
FIG. 4 is a rear view showing the wrap opening tool of the above.
FIG. 5 is a cross-sectional view showing a state in which the wrap opening device is attached to a surface of a packaging material in the overlap package.
6A is a cross-sectional view taken along the line XX in FIG. 2 showing a state where a rigid piece is raised, and FIG. 6B is a sectional view taken along a line ZZ in FIG. 2 showing a state where the rigid piece is raised. FIG.
FIG. 7 is an explanatory diagram (a cross-sectional view taken along the line ZZ in FIG. 2) for explaining a breaking operation of the packaging material by the wrap opening tool of the above.
FIG. 8 is a perspective view showing a modification of the above wrap opening device.
FIG. 9 is a perspective view showing a wrap opening device according to another embodiment.
FIG. 10 is a perspective view showing a wrap opening device according to another embodiment.
FIGS. 11 (a) to 11 (c) are explanatory diagrams for explaining an opening operation of the overlap package using the wrap opening device of the above.
FIG. 12 is a perspective view showing a wrap opening device according to another embodiment.
FIG. 13 is a perspective view showing a wrap opening device according to another embodiment.
FIGS. 14A to 14C are explanatory views for explaining an opening operation of an overlap package using a wrap opening tool according to another embodiment.
FIGS. 15A to 15C are explanatory diagrams for explaining a general opening method of the overlapped package.
[Explanation of symbols]
1, 2, 3, 4, 5 Wrap opening tool 11, 12 Rigid piece 11a, 11b, 12a, 12b Packaging material breaking claw 13 Hinge 14 Adhesive layer 21, 22 Rigid piece 21a, 22a, 22b Packaging material breaking claw 23 Hinge 31 , 32 Rigid piece 31a Packaging material breaking claw 33 Hinge 41, 42 Rigid piece 41a Packaging material breaking claw 43 Hinge 51 Rigid piece 52A, 52B Divided rigid piece 51a Packaging material breaking claw 53 Hinge R Packaging material

Claims (4)

A wrap opening device attached to a surface of a packaging material in the overlap package to open the overlap package,
With a pair of rigid pieces connected to each other via a hinge,
One of the rigid pieces has a packaging material breaking claw that projects to the other rigid side,
An adhesive layer is formed on at least the overhang region of the packaging material breaking claw on the back surface of both of the rigid pieces so that the packaging material breaking claw and both sides thereof are attached to the packaging material. A wrap opening device characterized by the above-mentioned. A wrap opening device attached to a surface of a packaging material in the overlap package to open the overlap package,
With a pair of rigid pieces connected to each other via a hinge,
Each of the rigid pieces has one or more packaging material breaking claws projecting toward the other rigid side so as to mesh with each other,
An adhesive layer is formed on at least the overhang region of the packaging material breaking claw on the back surface of both of the rigid pieces so that each of the packaging material breaking claws and both sides thereof are attached to the packaging material. A wrap opening device characterized in that: 3. The wrap opening device according to claim 2, wherein each of the rigid pieces has two or more packaging material breaking claws. The hinge according to claim 1, 2 or 3, wherein when one of the rigid pieces is raised with respect to the other rigid piece, the two rigid pieces are separated from each other. Wrap opening device as described.

Images