JP4139507B2 - Packaging container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-supporting packaging container having a rigid body and excellent gas barrier properties and openability.
[0002]
[Prior art]
Conventionally, as a packaging container having a rigid body, for example, as described in Japanese Utility Model Laid-Open No. 55-123477, the outer periphery of a flexible synthetic resin bag container is rigid. 2. Description of the Related Art A bag-like self-supporting container having a configuration in which a bi-folded cylindrical outer container having an adhesive is integrated around the periphery is known. However, the bag-like self-supporting container having this structure is a structure in which a flexible synthetic resin bag container is bonded to the inner surface of a folded cylindrical outer container, and is folded in two. Since the cylindrical outer container and the flexible synthetic resin bag container are separately manufactured and then integrated, the synthetic resin bag container manufacturing process is folded in two. The manufacturing process of the cylindrical outer container and the process of integrating them are required, so that the manufacturing process becomes very complicated and the production efficiency is not good. Moreover, since it is not manufactured using a continuous roll-shaped film, there exists a fault that an automatic filling packaging cannot be performed.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a packaging container composed of a laminated film and paperboard that has a rigid body portion and thus has excellent shape retention and self-supporting properties, and excellent gas barrier properties and openability.
[0004]
[Means for Solving the Problems]
The area excluding the joint thermal bonding part and the upper and lower edge thermal bonding part on the outer surface of the body of the pillow type bag made of the laminated film having the thermoplastic resin layer on the inner surface and having the thermal bonding part and the upper and lower edge thermal bonding part. The paperboard is laminated on almost the entire surface, and an inward incision is formed at a position near the top edge of the thermal bonding portion at the side edge of the jointed thermal bonding portion, and it is continuous over the entire circumference of the paperboard in correspondence with the cutting. Because it is a structure that forms an opening line, it has a rigid body with laminated paperboard, it has excellent shape retention and is suitable for packaging fragile products such as snack foods, and it has self-sustainability A packaging container having an excellent display effect can be obtained. At the time of use, it can be easily opened by tearing the laminated film from the notch provided in the jointed heat-bonding part and then tearing the paperboard and laminated film laminated on the body part along the opening line. Further, since a roll-like laminated film having a configuration in which a paperboard on which an opening line is formed is adhered and laminated at a predetermined position on the outer surface can be used for bag making or automatic filling and packaging, efficient production becomes possible.
[0005]
In the packaging container described above, by forming a plurality of creases parallel to the vertical direction of the container for folding the paperboard into a paperboard at a predetermined position to make the cross-sectional shape of the body part a polygonal shape, Since it becomes possible to make the cross-sectional shape of a trunk | drum into polygonal shape, it can be set as the container excellent in the design property. By providing the creases at predetermined four locations, the cross-sectional shape of the body portion can be made to be a quadrangle, so that it is possible to have an external shape similar to a rectangular parallelepiped paper box.
[0006]
In the packaging container described above, the upper and lower end edge thermal bonding portions are heat bonded in a state where the upper and lower end portions of the pillow type bag are folded in a V shape with both side ends inwardly, It is possible to provide a self-supporting rigid packaging container having an excellent design and having a circular or polygonal cross-section of the body portion, the portion of which does not protrude outside the body portion.
[0007]
In the packaging container described above, the upper and lower edge thermal bonding portions are thermally bonded with the upper and lower ends of the pillow-type bag open and bent at right angles along the top or bottom surface of the container, and both ends are further folded. By being bent along the body part and bonded to the paperboard surface of the body part, a rectangular parallelepiped rigid and self-supporting packaging container can be obtained as in the case of the paper container.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II of FIG. 1, and FIG. 3 is a paperboard at a predetermined position on the outer surface for producing the packaging container of the first embodiment. FIG. 4 is a perspective view showing a second embodiment of the present invention, FIG. 5 is a sectional view taken along line II of FIG. 4, and FIG. 6 is a packaging container according to the second embodiment. FIG. 7 is a perspective view showing a third embodiment of the present invention, and FIG. 8 is a perspective view showing a state in the middle of manufacturing of the third embodiment. FIGS. 9A and 9B are perspective views showing a fourth embodiment of the present invention, in which 1,1 ′ is a body portion, 2 is a paperboard, 3 is a laminated film, 4 is a jointed heat bonding portion, and 5,5 ′ is an upper end. Thermal bonding part, 5a is the edge of the upper end thermal bonding part, 6, 6 'is the lower end thermal bonding part, 6a is the lower edge thermal bonding part edge, 7 is the notch, 8 is the opening line, 9 is the inner edge of the jointed thermal bonding part, 11 is a crease , 12 is a cutting position, 14 is a palm thermal bonding region, 15 is an upper end thermal bonding region, and 16 is a lower end thermal bonding region.
[0009]
The first embodiment of the present invention is as shown in FIGS. 1 and 2, and is manufactured using the continuous sheet shown in FIG. As shown in FIG. 1, the shape of the first embodiment is such that a laminated film 3 having a thermoplastic resin layer on the inner surface is formed into a cylindrical shape at a palm-to-wall thermal bonding portion 4 and both ends at the upper and lower ends are V-shaped inward. The outer surface of the laminated film 3 is formed of a gusset pillow type bag which is sealed by forming an upper edge thermal adhesive portion 5 and a lower edge thermal adhesive portion 6 by being folded and thermally bonded to each other, and forming the trunk portion 1 of the gusset pillow type bag In addition, the paperboard 2 is laminated over the entire circumference of the body portion 1 over substantially the entire area excluding the jointed thermal adhesive portion 4, the upper edge thermal adhesive portion 5, and the lower edge thermal adhesive portion 6. Two inward incisions 7 are formed at predetermined positions at a position closer to the upper end edge thermal bonding portion 5 than the center in the vertical direction of the paper board, and continuous over the entire circumference so as to correspond to the incisions 7 in the paperboard 2 It consists of a structure in which two opening lines 8 are formed.
[0010]
As shown in FIG. 2, the cross-sectional shape of the body portion of the first embodiment is a circular shape having a configuration in which the paperboard 2 is laminated on the outer surface of the laminated film 3. The packaging container of 1st Embodiment is produced using the continuous sheet shown in FIG. The continuous sheet shown in FIG. 3 has a configuration in which a rectangular paperboard 2 having an opening line 8 formed at a predetermined position is bonded and laminated to the outer surface of the laminated film 3 at a predetermined interval. The laminated film 3 is joined to the inner surface of the laminated film 3 at the jointed thermal bonding regions 14 on both sides of the continuous paperboard 2 to form a jointed thermal adhesive part 4 and formed on the paperboard 2 at the side edge of the jointed thermal adhesive part 4. A cut 7 is formed at a position corresponding to the opened line 8, and the laminated film 3 is thermally bonded at the upper end thermal bonding region 15 and the lower lower end thermal bonding region 16 of the paperboard 2 to thermally bond the upper edge. It is produced by forming the part 5 and the lower edge thermal bonding part 6. When the inner heat of the laminated film 3 is joined and heat-bonded at the joint heat bonding regions 14 on both sides of the paperboard 2 to form the joint heat-bonding portion 4, the paperboard 2 is bent into a curved surface and has a circular body. 1 is formed.
[0011]
In the case of the packaging container according to the first embodiment, the body portion 1 has a configuration in which a paperboard 2 and a laminated film 3 are laminated and has rigidity and excellent shape retention. Even in this case, it is possible to protect the product and to have excellent independence because it is excellent in independence. At the time of use, the laminated film 3 of the part divided by the two notches 7 provided in the palm-clad thermal bonding part 4 is grasped and pulled in the direction opposite to the direction in which the palm-clad thermal bonding part 4 is bent. Tearing 3 and tearing one laminated film 3 at the inner end 9 of the heat-bonding part, and then tearing the paperboard 2 laminated on the body 1 along the opening line 7 together with the laminated film 3 for easy opening can do. In the case where the tear strength of the laminated film 3 to be used is strong, the laminated film 3 can be easily broken by forming fine scratches on the laminated film 3 at the inner end 9 of the jointed thermal bonding portion shown in FIG. . Since the contents can be automatically filled and packaged using the continuous sheet shown in FIG. 3, a packaging container can be produced very efficiently.
[0012]
The second embodiment of the present invention is as shown in FIGS. 4 and 5, and basically the first embodiment except that the cross-sectional shape of the body portion 1 ′ is a quadrangle as shown in FIG. It is the same structure as 1 embodiment. Also in the packaging container of the second embodiment, the same effect as that of the first embodiment is obtained, and the cross-sectional shape of the body portion 1 ′ becomes a square shape, so that a design effect different from that of the first embodiment is obtained. is there. The packaging container of 2nd Embodiment is produced using the continuous sheet shown in FIG. The continuous sheet shown in FIG. 6 is different from the continuous sheet shown in FIG. 3 in that four creases 11 are formed on the paperboard 2. When the continuous sheet is used to thermally bond the inner surfaces of the laminated film 3 together in the palm heat bonding regions 14 on both sides of the paper board 2 to form the palm heat bonding portion 4, The body 1 'is folded at the crease 11 to have a quadrangular cross section. The upper edge thermal bonding part 5 and the lower edge thermal bonding part 6 are formed in the same manner as in the first embodiment.
[0013]
Instead of forming the creases 11 one by one at the position where the paperboard 2 is folded as in the continuous sheet shown in FIG. 6 for producing the packaging container according to the second embodiment, the gap is narrow at the position where the paperboard 2 is folded. By forming a plurality of each, a packaging container having rounded corners without bending the corners at right angles as in the second embodiment. By forming a plurality of creases in the bent portion as described above, it is possible to obtain a packaging container having different corners and rounded corners. Moreover, in the packaging container of 1st, 2nd embodiment, the packaging container which hangs and displays by widening the vertical width of the upper edge thermal bonding part 5 and forming a hole in the upper edge thermal bonding part 5; can do.
[0014]
The third embodiment of the present invention is as shown in FIG. 7, and the shape of the body 1 'is a square shape as in the second embodiment, but the upper edge thermal bonding portion 5' and the lower edge thermal bonding portion 6 are the same. The shape of 'is different. A laminated film 3 having a thermoplastic resin layer on the inner surface is formed into a cylindrical shape by a palm-to-wall thermal bonding portion 4 and is thermally bonded in a state where both ends are opened at the upper and lower end portions, and an upper edge thermal bonding portion 5 'and a lower edge thermal bonding portion On the outer surface of the laminated film 3 of the body portion 1 ′ of the flat pillow type bag sealed by forming 6 ′, the palm heat-bonding portion 4, the upper edge heat bonding portion 5 ′, and the lower edge heat bonding portion 6 ′ are removed. The paperboard 2 is laminated over the entire circumference of the body 1 'over almost the entire area, and the upper edge thermal adhesive part 5' and the lower edge thermal adhesive part 6 'are bent along the top and bottom surfaces of the container and the upper end The thermal bonding portion edge 5a and the lower end thermal bonding portion edge 6a are bent along the body portion 1 ′ and bonded to the two paperboard surfaces of the body portion 1 ′. Even in the third embodiment, since the rigid body portion 1 ′ is provided, the product can be protected even when a snack food or the like that is excellent in shape retention and easily cracked is packaged, and the outer shape is the same as that of the paper box. Since it has a rectangular parallelepiped shape, it has excellent independence and excellent display effect at stores. At the time of use, it can be easily opened by tearing the paperboard 2 and the laminated film 3 of the trunk portion 1 ′ from the cut portion of the joint heat-bonding portion 4 as in the first and second embodiments.
[0015]
3rd Embodiment is produced using the film which narrowed the space | interval between the adjacent paperboards 2 in the continuous sheet shown in FIG. When the inner surface of the laminated film 3 of the continuous heat bonding area 14 on both sides of the continuous paper board 2 is heat bonded to form the combined heat bonding portion 4, the paper board 2 is bent by four creases 11. As a result, the body 1 'having a quadrangular cross section is formed. In this state, the laminated film 3 is opened to the outside in the upper end thermal bonding region 15 on the upper side of the paperboard 2 and the lower end thermal bonding region 16 on the lower side. By forming the upper edge thermal bonding portion 5 ′ and the lower edge thermal bonding portion 6 ′ by bonding, the shape shown in FIG. 8 is obtained. Next, the upper edge thermal bonding portion 5 ′ and the lower edge thermal bonding portion 6 ′ are bent along the top and bottom surfaces of the container, and the upper edge thermal bonding portion edge 5a and the lower edge thermal bonding portion edge 6a are further bent to the body portion 1 ′. Can be made into a rectangular parallelepiped packaging container by being bent along the line and adhered to the paperboard 2 surface of the body 1 ′.
[0016]
The fourth embodiment is as shown in FIG. 9, and the cross-sectional shape of the body portion 1 ′ is quadrangular, and basically has the same configuration as the second embodiment. In terms of external shape, the body 1 'is substantially cubic and is not shown, but is different in that the lower edge thermal bonding portion is bent and adhered along the bottom surface. The packaging container according to the fourth embodiment has the same effects as those of the second embodiment, and a different design effect. In the first to third embodiments, the outer shape is a vertically long form, but the body portions 1 and 1 'can be a substantially cubic shape or a horizontally long form as in the fourth embodiment.
[0017]
The laminated film 3 is a laminate of a base material layer and a thermoplastic resin layer, or a laminate of a base material layer, a gas barrier layer, and a thermoplastic resin layer. As the substrate layer, a biaxially stretched film such as biaxially stretched polyethylene terephthalate, biaxially stretched polypropylene, or biaxially stretched nylon is used, and a thickness of 12 to 20 μm is appropriate. As the thermoplastic resin layer, low density polyethylene, linear low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-propylene copolymer or the like is used, and a thickness of 20 to 40 μm is appropriate. As the gas barrier layer, an aluminum foil having a thickness of 7 to 9 μm, a metal vapor deposition layer such as aluminum, and a metal oxide vapor deposition layer such as silicon oxide can be used. If the thermoplastic resin layer in the laminated film 3 is too thick, it is not preferable because it becomes difficult to tear.
[0018]
The laminated film 3 is preferably one that is easy to tear and has excellent moisture resistance and gas barrier properties. The configuration of the laminated film 3 is as follows: biaxially stretched polyethylene terephthalate / aluminum deposited layer / low density polyethylene, biaxially stretched polyethylene terephthalate / aluminum foil / low density polyethylene, biaxially stretched polyethylene terephthalate / aluminum deposited layer / polypropylene, biaxially stretched Polyethylene terephthalate / aluminum foil / polypropylene, biaxially stretched polypropylene / aluminum deposition layer / polypropylene, biaxially stretched polypropylene / polypropylene, biaxially stretched polyethylene terephthalate / polypropylene, and the like.
[0019]
【The invention's effect】
The area excluding the joint thermal bonding part and the upper and lower edge thermal bonding part on the outer surface of the body of the pillow type bag made of the laminated film having the thermoplastic resin layer on the inner surface and having the thermal bonding part and the upper and lower edge thermal bonding part. The paperboard is laminated on almost the entire surface, and an inward incision is formed at a position near the top edge of the thermal bonding portion at the side edge of the jointed thermal bonding portion, and it is continuous over the entire circumference of the paperboard in correspondence with the cutting. Because it is a structure that forms an opening line, it has a rigid body laminated with paperboard, and it has excellent shape retention and is suitable for packaging fragile products such as snack foods. A packaging container having an excellent display effect can be obtained. At the time of use, it can be easily opened by tearing the laminated film from the notch provided in the jointed heat-bonding part and then tearing the paperboard laminated on the trunk part along the opening line. Further, since a roll-like laminated film having a configuration in which a paperboard on which an opening line is formed is adhered and laminated at a predetermined position on the outer surface can be used for bag making or automatic filling and packaging, efficient production becomes possible.
In the above packaging container, by folding the paperboard at a predetermined position to form a polygonal cross-sectional shape of the body part, a plurality of creases parallel to the vertical direction of the container are formed, Since it becomes possible to make the cross-sectional shape of a trunk | drum into polygonal shape, it can be set as the container excellent in the design property. By providing the creases at predetermined four locations, the cross-sectional shape of the body portion can be made to be a quadrangle, so that it is possible to have an external shape similar to a rectangular parallelepiped paper box.
In the packaging container described above, the upper and lower edge thermal adhesive portions are configured to be thermally bonded in a state where both sides of the pillow type bag are folded inwardly in a V shape so that the upper and lower edge thermal adhesive portions are the trunk portions. It is possible to provide a self-supporting and rigid packaging container having a circular or polygonal cross section that does not protrude outward and has a circular or polygonal cross section.
In the packaging container described above, the upper and lower edge thermal adhesive portions are thermally bonded with the upper and lower ends of the pillow-type bag open, and then folded at right angles along the top or bottom surface of the container. By being bent and bonded to each other so as to overlap the paperboard surface of the body portion, it is possible to obtain a packaging container having a rectangular parallelepiped shape and rigidity, like a paper container.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of the present invention.
2 is a cross-sectional view taken along the line II of FIG.
FIG. 3 is a plan view showing a continuous sheet in which paperboard is laminated at a predetermined position on the outer surface for producing the packaging container of the first embodiment.
FIG. 4 is a perspective view showing a second embodiment of the present invention.
5 is a cross-sectional view taken along the line II of FIG.
FIG. 6 is a plan view showing a continuous sheet in which paperboards are laminated at predetermined positions on the outer surface for producing the packaging container of the second embodiment.
FIG. 7 is a perspective view showing a third embodiment of the present invention.
FIG. 8 is a perspective view showing a state in the middle of manufacturing of the third embodiment.
FIG. 9 is a perspective view showing a fourth embodiment of the present invention.
[Explanation of symbols]
1,1 'body 11 crease 2 paperboard 12 cutting position 3 laminated film 14 joint thermal bonding area 4 joint thermal bonding area 15 upper thermal bonding area 5, 5' upper thermal bonding area 16 lower thermal bonding area
5a Edge 6 and 6 'upper edge thermal bonding part
6a Lower edge of the thermal bonding part 7 Cut 8 Opening line 9 Inner edge of the jointed thermal bonding part

Claims (4)

The outer surface of the body of a pillow-type bag made of a laminated film having a thermoplastic resin layer on the inner surface and having a heat-bonding joint between upper and lower edges and a heat-bonding section on the upper and lower edges, excluding the heat-bonding joint and upper and lower-edge thermal bonding sections. A paper board is laminated on substantially the entire surface, and an inward-facing cut is formed at a position near the top edge thermal bonding part of the side edge of the joint thermal bonding part. A packaging container comprising a structure in which an open line continuous over the entire circumference is formed. The paperboard comprises a configuration in which a plurality of creases parallel to the vertical direction of the container are formed in order to fold the paperboard at a predetermined position to make the cross-sectional shape of the body portion a polygonal shape. The packaging container according to 1. The upper and lower edge thermal adhesive portions are configured by thermally bonding the upper and lower end portions of the pillow type bag with both side ends folded inward in a V shape. Packaging containers. The upper and lower edge thermal adhesive portions are thermally bonded with the upper and lower ends of the pillow-type bag opened, bent at right angles along the top or bottom of the container, and further, both end portions are along the trunk. The packaging container according to claim 2, wherein the packaging container is configured to be bent to a side and adhered to the paperboard surface of the body portion.

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