JP5239538B2 - Gobeltop paper container - Google Patents

Description

  The present invention relates to a gobeltop paper container used for packaging liquor, wine, coffee, etc., which is easily folded when discarded to reduce the bulk.

  Conventionally, as the gobeltop type paper container V as shown in FIG. 5, generally, high pressure method low density polyethylene (LDPE) / paper / LDPE / aluminum foil / adhesive / biaxially stretched polyethylene terephthalate (PET) / LDPE or A structure composed of medium density polyethylene (MDPE) or linear low density polyethylene (LLDPE) is used, and in the above structure, the lamination step of aluminum foil and PET is omitted, LDPE / paper / LDPE / An aluminum vapor deposition layer / PET / LDPE or LDPE / paper / LDPE / silica vapor deposition layer / PET / LDPE is used.

  And since the govel top type | mold paper container V as shown in FIG. 5 consists of an above-described structure, it is thick and rigid, and the top part of the roof type | mold formed by heat-bonding surfaces completely, and a square bottom part Is difficult to disassemble and extremely difficult to fold, and it is difficult to reduce the bulk when disposing of the gobeltop paper container after use. Various proposals have been made (for example, see Patent Document 1).

  The technique disclosed in Patent Document 1 facilitates folding and disassembling the roof-shaped top portion or the square bottom portion. As shown in FIG. The side plate 12, the front plate 13, the side plate 14, and the adhesive plate 15 are connected to each other via a crease, and upper and lower ends of the rear plate 11, the side plate 12, the front plate 13, and the side plate 14. The top forming plates 11a, 12a, 13a, and 14a and the bottom forming plates 11b, 12b, 13b, and 14b are connected to the edges through creases, respectively, and the side plates 12 and the center portions of the side plates 14 are vertically connected to each other. Folding lines 16 are respectively provided in the directions, and folding lines 17 are provided in the longitudinal direction at the center portions of the top forming plates 12a and 14a and the bottom forming plates 12b and 14b, respectively, and the side plates 12 and 14 and the top shape. Plate 12a, is obtained by 14a or the bottom forming plate 12b, a structure is formed in a state excluding the upper and lower predetermined dimensions Orikei articulating the 14b. In this way, the folding lines 16 and 17 are provided so as to be easily folded.

  Furthermore, a partial adhesive strength adjusting layer 7 and an adhesive layer are bonded to a region where the surfaces of the bottom forming plates 12b, 13b, and 14b are thermally bonded and a region where the surfaces of the top forming plates 12a and 14a are bonded to each other. Strength adjustment layer 8 is ethylene-vinyl acetate copolymer, chlorinated ethylene-vinyl acetate copolymer, chlorinated polyethylene, chlorinated polypropylene, cyclized rubber, polyamide resin, urethane resin, acrylic resin, cellulose resin A region where the surfaces of the bottom forming plates 12b, 13b, and 14b are thermally bonded to each other, and the surfaces of the top forming plates 12a and 14a. A portion where the adhesive strength adjusting layer 7 and the adhesive strength adjusting layer 8 are printed and formed in a region where the two are thermally bonded ( By adjusting the area of the adhesive not part) and unprinted portion (heat bondable portion), and configured to heat the adhesive portion of the top and bottom made peelable. The area for forming the adhesive strength adjusting layer 7 and the adhesive strength adjusting layer 8 is such that the surfaces of the bottom forming plates 12b, 13b, and 14b are thermally bonded and the surfaces of the top forming plates 12a and 14a are heated. Each of the regions to be bonded has an area of 10% or more.

  The above-configured Gebel top type paper container V is partially bonded to each region where the surfaces of the bottom forming plates 12b, 13b, 14b and the top forming plates 12a, 14a are thermally bonded to each other. Since the adjustment layer 7 and the adhesive strength adjustment layer 8 are formed, the adhesive strength adjustment layers 7 and 8 allow the outer surfaces of the bottom forming plates 12b, 13b, and 14b and the top forming plates 12a and 14a to be connected to each other. Since the area of the part to be thermally bonded is reduced and the adhesive strength is weakened, it can be easily peeled off and the top and bottom parts can be disassembled. The folding line 16 is formed in the vertical direction, and the folding line 17 is formed in the vertical direction at the center of the top forming plates 12a, 14a and the bottom forming plates 12b, 14b. To consisting with the structure, it can be easily folded, it is possible to reduce the volume. Further, the folding lines 16 and 17 are formed in a state in which the side plates 12 and 14 and the top forming plates 12a and 14a or the bottom forming plates 12b and 14b are formed in a state excluding a predetermined dimension above and below the crease that connects them. Therefore, the deformation of the paper container during use can be prevented, and the side plates 12 and 14 can be easily folded inward in the longitudinal direction after use, and can be easily folded to reduce the bulk. It can be done.

However, the above-described Gebeltop-type paper container V is much easier to disassemble after use and can be easily folded and reduced in volume as compared with the conventional one without any means for disassembling and folding. As shown in FIG. 7, the square bottom B is formed by aligning the bottom forming plate 11b and the bottom forming plate 13b and the bottom forming plate 12b as compared with the roof-shaped top. , 14b are folded in a triangular shape, and the bottom forming plate 11b is folded so as to cover the bottom forming plate 13b, and the whole is folded flat, and the bottom forming plate 11b and the bottom forming plate 13b form a bottom surface. As shown in FIG. 8, predetermined regions between the surfaces of the bottom forming plates 12b, 13b, and 14b and the top forming plates 12a and 14a are thermally bonded. Since the square bottom B is formed, the top of the roof mold can be inserted into the triangularly folded portion, so that the surfaces of the top forming plates 12a and 14a are thermally bonded to each other. Can be peeled off, but the rectangular bottom B is folded flat between the bottom forming plates 11b and 13b and the bottom forming plates 12b and 14b are folded in a triangular shape. Since the folded part is tightly folded to such an extent that fingers cannot be inserted, it is difficult to peel off the triangularly folded part compared to the roof top. It was.
Japanese Patent Laid-Open No. 10-218169

  Therefore, the present invention is different from the top of the roof mold and the bottom of the square, specifically, the top of the roof mold has a triangular folded portion where fingers can be inserted, whereas the square has a square shape. Paying attention to the fact that this part does not exist at the bottom, if you can provide a place that corresponds to the triangularly folded part where you can insert fingers like the roof top on the square bottom, The present invention has been found by finding that it can be easily dismantled in the same manner as the top of the roof mold. In other words, a means for inserting a finger into the bottom of the square is provided, and after use, the finger can be easily inserted using this means, and the square bottom can be easily disassembled. It is to provide a gobeltop paper container that can be made.

In order to achieve the above object, the inventor of the present invention is characterized in that at least a thermoplastic resin layer, a paper layer, an adhesive resin layer, a gas barrier layer, and a thermoplastic resin layer are laminated in order from the outer surface. A body portion formed by a front plate, a rear surface plate, and both side surface plates, a roof portion formed by a top forming plate at an upper end edge of the body portion, and a bottom portion formed at a lower end edge of the body portion. It is a Gobel top type paper container which consists of a bottom part formed with a board, and the region including the lower end edge of the both side plates is a virtual lower end edge when assuming the lower end edge, the front plate and the rear plate. Two creases connecting two intersecting intersections are configured to form a connecting plate having a shape that is symmetrical or asymmetric with respect to the virtual lower end edge, and the virtual plates of the both side plates are configured. The connecting plate formed in a region including a lower end edge In order to make the bottom forming plate connected via a square bottom, two diagonal creases provided on the bottom forming plate for folding in a triangular shape are formed in a circular arc shape with the connecting plate side convex. It is characterized by being.

The bottom formation for folding in a triangular shape so that the bottom forming plate connected via the connecting plate formed in a region including the virtual lower edge of the both side plates according to claim 1 is formed into a square bottom. When the diagonal crease provided on the plate is formed in an arc shape with the connecting plate side convex, when the bottom forming plate is folded into a triangular shape to form a square bottom In addition, since the folded triangular tip part is molded and heat-bonded so as not to overlap, it can be made into a beautiful rectangular bottom, for example, leakage of contents such as liquid The bottom can be without .

According to a second aspect of the present invention, there is provided the bevel-top type paper container according to the first aspect, wherein the connecting plate has any one of a substantially convex lens shape, a substantially rhombus shape, and a substantially trapezoidal shape. .

Further, the present invention described in claim 3 is the gable top-type paper container according to any one of claims 1 and 2 , wherein the outer surfaces of the top forming plate and the bottom forming plate are partially bonded to a region to be thermally bonded. An adhesive strength adjusting layer is formed.

Further, the present invention according to claim 4, in gable top type paper container according to any one of claims 1-3, wherein both side plates and the both sides formed by connecting the upper and lower plate top forming plate and the bottom forming plate A vertical folding line is formed at the center of each of the above.

The present invention comprises a laminate in which at least a thermoplastic resin layer, a paper layer, an adhesive resin layer, a gas barrier layer, and a thermoplastic resin layer are laminated in order from the outer surface, and is formed of a front plate, a rear plate, and both side plates. A top part of the body part, a roof part formed of a top part forming plate on the upper edge of the body part, and a bottom part formed of a bottom part forming plate on the lower end edge of the body part. In the region including the lower edge of the both side plates, two creases that connect two intersection points where the virtual lower edge when the lower edge is assumed and the front plate and the rear plate intersect are formed on the virtual lower edge. In contrast,
Alternatively, it is configured to form a connecting plate having an asymmetric shape, and the connecting plate has any one of a substantially convex lens shape, a substantially rhombus shape, and a substantially trapezoid shape. By pressing the part of the connecting plate in the shape or the substantially trapezoidal shape with fingers with the fingers toward the inner side of the paper container, the heat-bonded predetermined area between the surfaces of the square bottoms can be easily peeled off and the roof The top part of the top part can also be easily peeled off the heat-bonded predetermined region between the top parts from the part folded in a triangular shape, and the goblet top type paper container can be easily folded to reduce the bulk. it can.

  In the present invention, an adhesive strength adjusting layer is partially formed in a region where the outer surfaces of the top forming plate and the bottom forming plate are thermally bonded to each other, and upper and lower sides of the both side plates and both side plates. By forming a vertical folding line at the center of each of the top forming plate and the bottom forming plate connected to each other, it can be folded more easily with the intention to fold after use, thereby reducing the bulk. If you do not intend to fold it when in use, the folding plate is formed in the center of each plate, so that the side plates bend inward at the upper and lower corners of the paper container. Therefore, deformation of the paper container during use can be prevented.

The above-described present invention will be described in detail below with reference to the drawings.
FIG. 1 is a diagram schematically showing the layer structure of a laminate used in a gobbel top paper container according to the present invention, FIG. 2 is a plan view showing the state of the surface of a blank plate of the gobel top paper container according to the present invention, and FIG. FIG. 4 is a perspective view showing a bottom state of the gobeltop-type paper container according to the present invention, FIG. 4 is a perspective view showing a folded state of the gobeltop-type paper container according to the present invention, and FIG. 5 is a perspective view showing a conventional gobeltop-type paper container. 6 is a plan view showing a state of the surface of a blank plate of a conventional gobber top type paper container, FIG. 7 is a view for explaining a molding method of the bottom part of the gobber top type paper container, and FIG. Is a polyethylene layer, 2 is a paper layer, 3 is an adhesive resin layer, 4 is a gas barrier layer, 7 and 8 are adhesive strength adjusting layers, 11 is a rear plate, 12, 1 Is a side plate, 13 is a front plate, 15 is an adhesive plate, 11a, 12a, 13a and 14a are top forming plates, 11b, 12b, 13b and 14b are bottom forming plates, 16 and 17 are folding lines, and 18 is a spout attachment. Hole 19 is a bottom edge bonding portion, 21, 22, 23, 24, 31, 32, 33, 34, 41, 42, 43, 44, 42 ', 42 ", 44', 44" are creases, 12c , 14c is a connecting plate, B is a rectangular bottom, F is a virtual lower end edge, S is a laminate, and V is a gobeltop paper container.

  FIG. 1 is a diagram schematically showing a layer structure of a laminate used in a gobbel top type paper container according to the present invention. A laminate S used in a gobeltop type paper container V includes a polyethylene layer 1 and a paper layer 2 in order from the outer surface. It is composed of an adhesive resin layer 3, a gas barrier layer 4, and a polyethylene layer 5, and the printed pattern is usually provided on the outer surface of the polyethylene layer 1, but if necessary, the printed pattern on the paper layer 2 and polyethylene layer 1 side is provided. It may be provided on the surface.

  The polyethylene layer 1 is low-density polyethylene, and the polyethylene layer 5 is low-density polyethylene, medium-low density polyethylene, linear low-density polyethylene, and ethylene-α-olefin copolymer polymerized using a single site catalyst. A polymer or the like is used. Moreover, as the paper layer 2, a paperboard having a basis weight of 250 to 450 g / m 2 is used. The adhesive resin layer 3 includes low density polyethylene, ionomer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl acrylate copolymer (EMA), An ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl methacrylate (EMMA), or the like is used. The gas barrier layer 4 may be a laminate of an aluminum foil having a thickness of 6 to 9 μm and a biaxially stretched polyethylene terephthalate film or a biaxially stretched nylon film, a metal such as aluminum, or a metal such as aluminum oxide or silicon oxide. A biaxially stretched polyethylene terephthalate film or a biaxially stretched nylon film deposited with an oxide is used.

  FIG. 2 is a plan view showing the state of the surface of the blank plate of the gobeltop type paper container according to the present invention. The gobeltop type paper container V includes the rear plate 11, the side plate 12, the front plate 13, the side plate 14, and the adhesive plate. 15 are connected via the creases 21, 22, 23, and 24, and the top plate 11a, 12a, 13a, and the upper and lower edges of the rear plate 11, the side plate 12, the front plate 13, and the side plate 14 are provided. 14 a and bottom forming plates 11 b, 12 b, 13 b, 14 b are connected via creases 31, 32, 33, 34 and creases 41, 42, 43, 44, and the crease 42 and crease 44 are Symmetrically with respect to the virtual lower edge F connecting two intersections where the virtual lower edge F and the rear surface plate 11 and the front plate 13 intersect when the lower edge of the side plates 12 and 14 is assumed, and The central part is In order to form the connecting plates 12c, 14c having a maximum deviation width with respect to the imaginary lower end edge, each is composed of two creases 42 ', 42 "and creases 44', 44", Further, folding lines 16 are vertically folded at the center portions of the side plate 12 and the side plate 14, respectively, and folded vertically at the center portions of the top forming plates 12a, 14a and the bottom forming plates 12b, 14b. A curved line 17 is formed in a state excluding predetermined dimensions above and below the creases 32 and 34 and a condition excluding predetermined dimensions above and below the connecting plates 12c and 14c, and the bottom forming plates 12b and 14b include the above-mentioned Inclined creases provided on each of the bottom forming plates 12b and 14b for folding the bottom forming plates 12b and 14b into a triangular shape so as to form a square bottom are formed in an arc shape with the connecting plate side convex. Is In addition, partial adhesion strength is provided in the region where the surfaces of the bottom forming plates 11b, 12b, 13b and 14b are thermally bonded and the region where the surfaces of the top forming plates 11a, 12a, 13a and 14a are thermally bonded. The blank plate T on which the adjustment layer 7 and the adhesion strength adjustment layer 8 are formed is thermally bonded to the rear plate 11 and the adhesive plate 15 and formed into a cylindrical shape, and the bottom forming plates 11b, 12b, 13b, and 14b are formed in a predetermined shape. The bottom is formed by bending and heat bonding in a manner, and then the top forming plates 11a, 12a, 13a, and 14a are bent and heat-bonding in a predetermined manner to form a top portion to be a finished product. In FIG. 2, the connecting plates 12c and 14c have substantially convex lens shapes. However, the two folding lines 42 provided symmetrically with respect to the virtual lower end edge F such as a substantially rhombus shape and a substantially trapezoid shape. A connecting plate of any shape composed of ', 42 "and 44', 44" may be used, and although not shown, the two folds are not symmetrical and are asymmetrical. Further, the connecting plate may be formed of the asymmetric crease, and the connecting plates 12c and 14c may have the same shape as shown in FIG. The shape may be different.

  As shown in FIG. 3 (a), the Gobeltop paper container V according to the present invention configured as described above has a connecting plate 12c and a side plate 12 and 14 (not shown) between the connecting plate 12c and the side plate 12 and 14 (not shown). By providing 14c, it is possible to insert fingers from the connecting plates 12c to 14c, thereby easily peeling a predetermined region where the surfaces of the bottom forming plates 12b, 13b, 14b are thermally bonded to each other. 3 (b), and although not shown in the figure, the bottom forming plates 12b and 14b are bent inward at the folding line 17 at the center in the width direction, and then the roof-shaped plate is formed. As for the top portion, fingers are inserted into the portion folded in a triangular shape to peel off a predetermined region where the surfaces of the top portion forming plates 12a and 14a are thermally bonded to each other, and the top forming plates 12a and 14a are separated from the center portion in the width direction. of Bent inwardly at the curve 17, it may be a folded state shown in FIG. 4 by further folding the side plates 12 and 14 inward at widthwise central portion of the folding line 16.

It is a figure showing the layer composition of the layered product used for the gable top type paper container concerning the present invention diagrammatically. It is a top view which shows the state of the surface of the blank board of the gable top type paper container concerning this invention. It is a perspective view which shows the bottom part state of the gable top type paper container concerning this invention. It is a perspective view which shows the state which the govel top type paper container concerning this invention folded. It is a perspective view which shows the conventional gable top type paper container. It is a top view which shows the state of the surface of the blank board of the conventional gable top type paper container. It is a figure explaining the shaping | molding method of the bottom part of a gobeltop type paper container. It is a perspective view which shows the square bottom part of the conventional gable top-type paper container.

Explanation of symbols

1,5 Polyethylene layer 2 Paper layer 3 Adhesive resin layer 4 Gas barrier layer 7, 8 Adhesive strength adjustment layer 11 Rear plate 12, 14 Side plate 13 Front plate 15 Adhesive plate 11a, 12a, 13a, 14a Top forming plate 11b, 12b , 13b, 14b Bottom forming plate 16, 17 Folding line 18 Outlet attachment hole 19 Bottom edge adhering part 21, 22, 23, 24 Folding line 31, 32, 33, 34 Folding line 41, 42, 43, 44 Folding line 42 ', 42 ", 44', 44" Folded crease 12c, 14c Connecting plate B Square bottom S Laminate V Gable top paper container

Claims (4)

A body formed of a laminate in which at least a thermoplastic resin layer, a paper layer, an adhesive resin layer, a gas barrier layer, and a thermoplastic resin layer are laminated in order from the outer surface, and a body formed by a front plate, a rear plate, and both side plates; A top part of the trunk portion formed by a top forming plate and a bottom part formed by a bottom portion forming plate at the lower end edge of the trunk portion. In the region including the lower end edge, two creases connecting two intersections where the virtual lower end edge, the front plate and the rear plate intersect when the lower end edge is assumed are symmetrical with respect to the virtual lower end edge. Alternatively, the bottom forming plate is configured to form a connecting plate having an asymmetric shape and is connected via the connecting plate formed in a region including the virtual lower edge of the both side plates. Triangle to make the bottom of the square It said bottom oblique Orikei provided two each forming plate is characterized in that it is formed in a circular arc shape which is convex to the connecting plate side gable top paper containers for folding. The gobeltop-type paper container according to claim 1, wherein the connecting plate has a substantially convex lens shape, a substantially rhombus shape, or a substantially trapezoidal shape. The adhesive strength adjusting layer is partially formed in a region where the outer surfaces of the top forming plate and the bottom forming plate are thermally bonded to each other. Container . 4. A folding line in the vertical direction is formed at the center of the top forming plate and the bottom forming plate connected to the upper and lower sides of the both side plates and the both side plates, respectively. The above-described gobeltop paper container .

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