JP2537820Y2 - Sealed paper carton - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a sealed paper carton made of paperboard such as processed paper.

[Related Art] Conventionally, paper cartons represented by folding boxes have been widely used as individual packaging containers for selling long raw confectioneries such as castella and cakes to consumers. In addition, individual confections such as individual cakes and oil confections are generally arranged on trays and sold together with the trays in cartons as described above at retail stores.

[Issues to be solved by the invention] By the way, recently, confectionery manufactured at a confectionery factory is packed directly in a carton at the factory, distributed with the carton, and sold directly at retail stores such as supermarkets and convenience stores. However, the conventional carton as described above has a problem that the preservation period is limited to a very short time due to lack of hermeticity. Further, it is also practiced to extend the storage period by wrapping the periphery of the carton in a sealed state. However, in this case, there is a problem that the wrapping and opening operations are troublesome.

In addition, the conventional carton as described above is mainly a rectangular parallelepiped, and the only way to differentiate it from other products at stores is to devise printing or change the dimensions. On the other hand, in the recent confectionery industry, there is a strong demand for the emergence of cartons with novel designs.

The present invention has been made in view of the above-described problems and background, and provides a sealed paper carton that has a large display effect at a store or the like, has excellent sealing properties, and can easily and reliably perform an opening operation. It is intended to be.

Means for Solving the Problems In order to achieve the above object, the present invention provides a rectangular top surface by bending a blank plate having fold lines parallel to each other, winding the blank plate at each fold line, and bonding both ends. panel,
The vertical cross-sectional shape consisting of the lower panel and the pair of side panels constitutes a rectangular body, and rectangular inclined panels are respectively connected to both ends of the upper panel and the lower panel, and each of the inclined panels is Outer rib panels are connected to each other, and at both ends of each of the side panels, an isosceles triangular in-fold panel whose apex angle is an acute angle is connected to the bottom side thereof, and each oblique side of each in-fold panel is provided. A pair of right-angled triangular inwardly-folded small panels respectively provided on the long sides sandwiching a right angle with the adjacent inclined panel are continuously provided on the sides opposed to the right angles, respectively. An inner rib panel connected to the outer rib panel adjacent to the outer rib panel adjacent to the shorter side sandwiching the right angle is connected to each other, and the pair of inner folded panels are bent inward and connected to the pair. At the same time as folding the inwardly folded small panel, each of the inclined panels is inclined inward, and each of the inner rib panels is sandwiched and adhered by the respective outer rib panels to form a horizontal rib portion. In a sealed paper carton assembled by forming side closures of the same shape, the blank plate is made of a wrapping material mainly composed of a paper layer, and a strip-shaped synthetic resin film having tearability in the length direction is further provided. When the blank plate is wound, it is laminated on the inner side of the paper layer so that the start end and the end coincide with each other, and further straddles the two regions of the band-like region where the synthetic resin film is laminated and the region of only the packaging material. It is characterized in that a grip portion having a protruding portion is provided.

Further, in order to make the contents visible from the outside of the carton, a mode may be adopted in which a window hole is formed in the upper panel and a transparent film member for closing the window hole is provided.

[Operation] The sealed paper carton having the above-described configuration has a three-dimensional shape having a horizontally-long body portion having a rectangular cross-sectional shape and a roof-type side closure on both sides of the body portion. Make people recognize new shapes visually. The horizontal rib at the end of the side closure acts as a handle when holding the carton.

Then, a strip-shaped synthetic resin film having tearability in the length direction is laminated on the inside of the paper layer in a state where the start end and the end coincide with each other when the blank plate is wound, and the synthetic resin film is laminated. By providing a gripping portion formed by projecting a portion extending over two regions, that is, a band-shaped region and a region of only the packaging material, when the gripping portion is pinched and pulled, the side end of the synthetic resin film is opened. The opening is performed straight so as to define one side edge.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of one embodiment of a sealed paper carton according to the present invention. A sealed paper carton C shown in FIG. 1 is formed by cutting a blank plate B shown in FIG. a,
The body 1 is bent at b, c, d and wound, and the both ends are adhered to each other to form the body 1 having a rectangular longitudinal cross-section. It was created by forming side closures 4,5 of the same shape with portions 2,3.

As shown in FIG. 2, the blank plate B is composed of upper panel portions P1 and lower panel portions P1 by mountain fold lines a, b, c, d parallel to each other.
2. It is largely divided into an adhesive flap portion F and horizontal panel portions P3 and P4 located therebetween.

The upper panel portion P1 is composed of a rectangular upper panel 11, rectangular inclined panels 12, 12 and outer rib panels 13, 13, and each inclined panel 12 is provided at both ends of the upper panel 11 via mountain fold lines e, f. The outer rib panels 13, 13 are respectively connected to the inclined panels 12, 12 via valley fold lines g, h. On the side of the upper panel 11 opposite to the mountain fold line a, grips 14 used for opening are provided, and notches 15, 15 are formed on both sides of the grips 14.

The lower panel portion P2 is composed of a rectangular lower panel 21, rectangular inclined panels 22, 22, and outer rib panels 23, 23.Each inclined panel 22 is provided at both ends of the lower panel 21 via mountain fold lines i, j. The outer rib panels 23 are respectively connected to the inclined panels 22, 22 via the valley fold lines k, l.

The horizontal panel portion P3 has a rectangular side panel 31 as a center, an apex angle of which is an isosceles triangular inward folding panel 32, a pair of right triangular inward folding small panels 33 and a pair of inner rib panels 34. It is provided at each end. And
Each inward fold panel 32 has its bottom side connected to both ends of the side panel 31 via the mountain fold lines m and n, and each inward fold panel 32 has a pair of inward fold small panels 33 and a pair of inner folds. The rib panel 34 is similarly connected in a symmetrical manner. In other words, the upper part in the drawing will be described. A pair of inwardly folded small panels 33 are respectively provided on the oblique sides of the inwardly folded panel 32 via the valley fold lines o and p on the sides facing the right angle, and sandwich the right angle. On the long side, they are connected to the inclined panels 12, 22 via the mountain fold lines a, b, respectively,
Further, the inner rib panels 34 are respectively connected to the short sides of the small inner panels 33 across the right angle via the mountain fold lines q and r. And each inner rib panel 34 has a valley fold line s
And are connected to the outer rib panels 13 and 23 via the mountain fold lines a and b, respectively.

Similar to the horizontal panel portion P3, the horizontal panel portion P4 has a rectangular side panel 41 as a center, an isosceles triangular inward folding panel 42 having an acute apex angle, and a pair of right triangular inward folding small panels 43. And a pair of inner rib panels 44 at both ends thereof. Each in-fold panel 42 has its bottom side connected to both ends of the side panel 41 via the mountain fold lines t and u, respectively.
In the same manner as in the horizontal panel portion P3, a pair of in-fold small panels 43 and a pair of inner rib panels 44 are similarly connected in a targeted state.

The adhesive flap portion F is composed of an elongated central flap 51, inclined flaps 52, 52 and rib flaps 53, 53. Each inclined flap 52 is connected to the central flap via a mountain fold line e ', f'.
Each rib flap 53
Are connected to the respective inclined flaps 52 via valley fold lines g 'and h'.

On the other hand, as shown in the sectional view of FIG. 3 (a), the blank plate B has a thickness of 20
μ heat-fused resin layer 61 made of polyethylene, paper layer 62, adhesive layer 63 made of polyethylene having a thickness of 20μ, thickness of 7-9μ
And a packaging material 60 formed of a barrier layer 64 made of aluminum foil, an adhesive layer 65 made of polyethylene having a thickness of 20 μm, and a heat-sealing resin layer 66 made of polyethylene having a thickness of 40 μm. In the embodiment shown in FIG.
As shown in the cross-sectional view of FIG. 3B, a band-shaped synthetic resin film 67 having tearability (in the direction of the arrow in the figure) is provided at the position indicated by the dotted line in FIG. It is laminated so as to be sandwiched between 66.

Further, in the blank plate B shown in FIG.
The grip portion 14 is formed at one end of the protrusion 11 so as to project with a width smaller than the width of the synthetic resin film 67. Therefore, this gripping portion 14 is a packaging material 60 including a synthetic resin film 67.
Has been extended.

The strip-shaped synthetic resin film 67 having tearability in the length direction is a uniaxially stretched thermoplastic synthetic resin film, or a biaxially stretched thermoplastic synthetic resin film having extremely large orientation in the other direction as compared with one direction. And the like, and is preferably mainly composed of a polyolefin-based film such as polyethylene or polypropylene, and its thickness is appropriately determined to such an extent that it can be torn by hand.

Further, in the packaging material 60, as the barrier layer 64, in addition to the aluminum foil, a material composed of a polyvinylidene chloride film, a polyvinylidene chloride coated polyester film, an ethylene / vinyl alcohol copolymer resin film, or the like is generally used. Used for In addition, the heat-sealing resin layer 6
For the layers 1, 66 and the adhesive layers 63, 65, synthetic resins such as ionomers and polypropylene may be used in addition to polyethylene.

In order to assemble the sealed paper carton C shown in FIG. 1 from the blank plate B shown in FIG. 2, first, the upper panel part P1,
The lower panel portion P2, the adhesive flap portion F and the horizontal panel portions P3, P4 located therebetween are folded at the mountain fold lines a, b, c, d,
The center flap 51 and the inclined flap 5 of the adhesive flap portion F
2, 52 and the rib flaps 53, 53 are bonded to the inner surface of the end of the upper panel portion P1. At this time, the mountain fold lines e and e ', f and f', the valley fold lines g and g ', and h and h' are overlapped at the bonding portion of both. In this way, after forming the body 1 having a rectangular cross section, the contents are stored in the body 1, and then the left and right side closing parts 4, shown in FIG.
Form 5 The procedure for forming these side closures 4, 5 is as follows. First, fold each in-fold panel 32 along the mountain fold lines m and n.
Further, each in-fold panel 42 is bent inward at the mountain fold lines t and u, respectively, and a pair of in-fold small panels 33 connected to them are connected.
And at the same time folding the pair of small folding panels 43, each inclined panel 12 at the mountain fold line e, f, and each inclined panel 2
2 is inclined inward at the mountain fold lines i and j, respectively. Each inner rib panel 34 is formed by the outer rib panels 13 and 23.
And each inner rib panel 44 is sandwiched and glued to horizontal ribs
By setting them to 2, 3, the side closing portions 4, 5 having the same shape are formed on both sides of the body portion 1, respectively.

At the start of opening the sealed paper carton C configured as described above, the grasping portion 14 is raised by a finger and is pinched. When the gripper 14 is pinched and the opening is started, the packaging material 60 is opened.
Starts to be cut from the notches 15 and 15, the strip-shaped synthetic resin film 67 provided in the packaging material 60 having tearability in the length direction is torn by the width of the grip portion 14 and the entire packaging material 60 is gripped. The carton C will be torn at the body 1, as it will be torn at the same width as the part 14.

The grip portion 14 may be provided at the position as described above.However, in order to effectively use the synthetic resin film 67 and reliably open the package to the end, the band-shaped region where the synthetic resin film 67 is laminated and the packaging material 60 are used. It is preferable to form a grip portion by protruding a portion that straddles two regions of only the region. If you do this,
The opening is performed such that the side end of the synthetic resin film 67 defines one side edge of the opening portion.

FIG. 4 is a perspective view showing another embodiment of the sealed paper carton according to the present invention. The sealed paper carton C 'shown in FIG. 4 is assembled with a blank plate B' shown in FIG. It was created. In these figures, the same reference numerals are given to the corresponding parts under the previous embodiment.

Sealed paper carton C 'is the sealed paper carton C of the previous embodiment.
The appearance is substantially the same as that of the first embodiment except that a window hole S is formed in the upper panel 11 and a transparent film member is provided to close the window hole S. I have. In order to form the window hole S having such a configuration, the blank plate B 'is devised in this embodiment. That is, as shown in FIG. 6 (a), the packaging material 70 constituting the blank plate B 'is composed of a heat-fused resin layer 71 made of polyethylene having a thickness of 20 μm, a paper layer 72, and polyethylene having a thickness of 20μ. At the stage of laminating the adhesive layer 73 and the barrier layer 74 made of aluminum foil having a thickness of 7 to 9μ, the window hole S is punched out,
A transparent film member covering the window hole S from inside.
It was created by providing 75. Specifically, after the window holes S are formed as described above, an adhesive layer 76 made of polyethylene having a thickness of 20 μ, and a barrier layer 7 made of a polyvinylidene chloride-coated polyester film having a thickness of 12 μ are formed.
7, adhesive layer 78 made of polyethylene with a thickness of 20μ, thickness 40
It is made by laminating a heat-sealing resin layer 79 made of μ μ polyethylene. Therefore, the adhesive layer 7 is provided in the window S.
6.A portion of the transparent film member 75 including the barrier layer 77, the adhesive layer 78, and the heat-sealing resin layer 79 is in an exposed state, and this portion is transparent and has barrier properties and strength. ing. Also in this blank plate B ', the strip-shaped synthetic resin film 80 having tearability in the length direction (the direction of the arrow in FIG. 5) is positioned at the position shown by the dotted line in FIG. Position), the sixth
As shown in the cross-sectional view of FIG. 9B, the laminated layers are sandwiched between the adhesive layer 78 and the heat-sealing resin layer 79.
Further, similarly to the case of the previous embodiment, a grip portion 14 protruding with a width smaller than the width of the synthetic resin film 80 is formed at one end of the upper panel 11.

In addition, as the transparent film member 75, a member having an appropriate layer configuration having a barrier property and strength required according to the contents and the shape of the window hole S can be adopted.
For example, the transparent film member 75 may be constituted by using an ethylene / vinyl alcohol copolymer resin film, a stretched nylon film, a stretched polypropylene film, a polyester film, or the like for at least one layer thereof,
In the case of contents that do not require much barrier properties, a layer structure composed of only a polyethylene film without providing these films may be used.

Further, in order to form the window hole S closed by the transparent film member, instead of devising the layer configuration of the blank plate B 'as described above, the blank plate B made of the packaging material 60 of the previous embodiment is used. A transparent film member formed through the window hole S and cut to a size larger than the window hole S, and may be bonded to the window hole S with an adhesive so as to cover the window hole S from the inside. It is.

Then, assembling the sealed paper carton C 'of this embodiment from the blank plate B' is performed in the same manner as in the case of the sealed paper carton C of the previous embodiment. Further, the manner of opening the assembled sealed paper carton C is the same as in the previous embodiment. In addition, in order to effectively use the synthetic resin film 80 and reliably open it straight, it is good to shift the position of the gripping portion 14 so as to cover the part of the packaging material 70 where the synthetic resin film 80 is not present. This is the same as in the embodiment.

Although two embodiments have been described, each sealed paper carton
Since each of the packaging materials 60 and 70 constituting C and C 'is mainly composed of the paper layers 62 and 72, there is a possibility that moisture or gas may enter and exit through the end faces of the paper layers. Therefore, in order to make the sealing property of the carton more complete, it is preferable to adopt an end face treatment configuration as shown in FIG. 7 in the bonding portion between the upper panel portion P1 and the adhesive flap portion F.

That is, at the side end of the adhesive flap portion F,
A thin portion is formed by cutting off half of the thickness of the packaging material (substantially the middle of the paper layer becomes half the thickness of the packaging material because the thickness of the paper layer is relatively large) from the front side, and this thin portion is formed. After processing to the original thickness by inverting at the half, the back side of the upper panel part P1 and the front side of the adhesive flap part F are overlapped as shown in the figure and adhered by heat sealing to form a sealed paper carton. The paper layer is not exposed on the inner surface of the. By performing such an end face treatment, the sealing property of the carton becomes more complete. Further, it is possible to avoid that the thickness of the bonding portion becomes three times as thick as the packaging material as in the case where the edge of the blank plate is simply folded back, and furthermore, since the paper layer is not exposed, the used paper is not used. It can also be used.

1 and 2 show an example in which the width of the side panels 31 and 41 is considerably smaller than the width of the upper panel 11 and the lower panel 21. These dimensional ratios can be determined appropriately according to the shape of the contents. Therefore, in some cases, the width of each of the panels 11, 21, 31, 41 may be the same, and the longitudinal section of the body may be square.

[Effects of the Invention] Since the sealed paper carton of the present invention is configured as described above, the following effects can be obtained.

The carton has a new three-dimensional shape that has a roof-shaped side closure on both sides of a horizontally long body that has a rectangular vertical cross-sectional shape. It has a better display effect at stores and other places than paper cartons. In particular, in the case where the window hole is provided, the contents can be seen from the outside, so that the display effect is further excellent. Further, since the rib portion at the end of the side closing portion serves as a handle, the contents can be carried horizontally without disturbing the contents. Further, since the carton itself has a sealing property, the fresh confectionery can be stored for a longer time than the conventional paper carton.

And, in the packaging material forming the carton, a band-shaped synthetic resin film having tearability in the length direction is laminated on the inside of the paper layer in a state where the start end and the end coincide when the blank plate is wound, Furthermore, by providing a grip portion formed by protruding a portion that straddles two regions of a band-shaped region where the synthetic resin film is laminated and a region of only the packaging material,
If you hold the grip with your fingers and pull it while turning the carton,
Opening is performed in a state where the band-shaped area is one side edge of the unsealed portion and the area of only the packaging material is the other side edge, but tearing in the area of only the packaging material is defined by the side edge of the synthetic resin film. Therefore, even if the opening portion gradually narrows, the tearing does not end in the middle of the trunk wall, and the opening can be reliably opened to the end in the circumferential direction.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of one embodiment of a sealed paper carton according to the present invention, FIG. 2 is an exploded view of a blank plate forming the sealed paper carton shown in FIG. 1, FIG. ) Is a partial cross-sectional view showing the layer structure of the packaging material constituting the blank plate shown in FIG. 2, and FIG. 3 (b) is a strip having a tearing property in the length direction in the packaging material of FIG. 3 (a). FIG. 4 is a partial cross-sectional view showing a layer structure of a portion provided with the synthetic resin film of FIG. 4, FIG. 4 is a perspective view showing another embodiment of the sealed paper carton according to the present invention, FIG. 6 (a) is a partial cross-sectional view showing a layer structure of a boundary portion of a window hole in a packaging material forming the blank plate shown in FIG. 5, and FIG. FIG. 6 (b) shows a strip-shaped synthetic resin film having tearability in the length direction in the packaging material of FIG. 6 (a). FIG. 7 is a partial cross-sectional view showing a layer configuration of a portion where the lum is provided. FIG. 7 is a cross-sectional view showing a layer configuration for explaining an example of a bonding portion at both ends of a blank plate. C, C '... Sealed paper carton, B, B' ... Blank plate, S ...
... Window, P1 ... Top panel, P2 ... Bottom panel, P
3, P4 ... horizontal panel, F ... adhesive flap, 1 ...
... Body, 2,3 ... Rib, 4,5 ... Side closure, 11 ...
Top panel, 12 ... Slope panel, 13 ... Outside rib panel, 14 ... Grip, 21 ... Bottom panel, 22 ... Slope panel, 23 ... Outside rib panel, 31 ... Side panel, 32 ...
Inward fold panel, 33 …… Inner fold small panel, 34 …… Inner rib panel, 41 …… Side panel, 42 …… Inward fold panel, 43…
… Inner fold small panel, 44 …… Inner rib panel, 51 …… Center flap, 52 …… Inclination flap, 53 …… Rib flap,
60 ... packaging material, 61 ... heat fusion resin layer, 62 ... paper layer, 63 ...
... Adhesive layer, 64 ... Barrier layer, 65 ... Adhesive layer, 66 ... Heat-fused resin layer, 67 ... Synthetic resin film (having tearability in the length direction), 70 ... Packaging material, 71 ... ... heat-fused resin layer, 72 ... paper layer, 73 ... adhesive layer, 74 ... barrier layer, 75
... transparent film member, 76 ... adhesive layer, 77 ... barrier layer, 78 ... adhesive layer, 79 ... heat sealing resin layer, 80 ... synthetic resin film (having tearing properties in one direction), a , b, c, d,
e, e ', f, f', i, j, m, n, q, r, t, u ... mountain fold, g, g ', h,
h ′, k, l, o, p, s …… valley fold line

Claims (2)

(57) [Scope of request for utility model registration] 1. A blank plate having a folding line parallel to each other is bent at each folding line, wound and adhered at both ends to form a rectangular cross section formed of a rectangular upper panel, a lower panel, and a pair of side panels. The upper panel and the lower panel each have a rectangular inclined panel connected to both ends of the upper panel and the lower panel, and an outer rib panel is connected to each of the inclined panels. At both ends, an isosceles triangular in-fold panel having an acute angle at the apex angle is continuously provided on the bottom side, and each oblique side of each in-fold panel has a long side sandwiching a right angle with the adjacent inclined panel. A pair of right-angled triangular inwardly-folded small panels respectively connected to each other are continuously provided on the sides facing the right angles, and the outer ribs adjacent to the short sides sandwiching the right-angled sides of the inwardly-folded small panels are provided. An inner rib panel connected to each of the inner panels is connected to each of the inner panels, and each of the inwardly folded panels is bent inward, and the pair of inwardly folded small panels connected thereto is folded at the same time as each of the inclined panels faces inward. A sealed paper carton that is assembled by forming the same-shaped side closures on both sides of the body by forming the horizontal ribs by sandwiching and bonding the inner rib panels with the outer rib panels. In, the blank plate is made of a packaging material mainly comprising a paper layer, and furthermore, a band-shaped synthetic resin film having tearability in the length direction, in a state where the start end and the end coincide with each other when the blank plate is wound. It is laminated on the inner side of the paper layer, and further protrudes from a portion extending over two regions of a band-like region where the synthetic resin film is laminated and a region of only the packaging material. Sealed paper carton, characterized in that a gripping portion comprising by. 2. The sealed paper carton according to claim 1, wherein a window hole is formed in the upper panel and a transparent film member for closing the window hole is provided.