WO2017195240A1

WO2017195240A1 - Gable top packaging container

Info

Publication number: WO2017195240A1
Application number: PCT/JP2016/004190
Authority: WO
Inventors: 佐々木　規行
Original assignee: 凸版印刷株式会社
Priority date: 2016-05-11
Filing date: 2016-09-14
Publication date: 2017-11-16
Also published as: JP2017202850A; JP6759694B2; TWI707807B; CN107364624B; TW201739669A; CN107364624A

Abstract

The purpose of the present invention is to provide a gable top packaging container that can be easily folded with minimal stress on the fingers when folded. Provided is a gable top packaging container comprising roof panels, foldback panels that are folded in below the roof panels, side surface panels connected to the lower edge of the foldback panels, and ruled lines formed in prescribed areas on the boundary lines between the foldback panels and the side surface panels, wherein for a prescribed length in the center in the longitudinal direction of the boundary lines, no ruled line is provided.

Description

Gavel-top packaging container

The present invention relates to a gable top type packaging container.

A paper-belt-type paper packaging container is known in which a sheet material including a paper base material layer is folded into a box shape and the ends are overlapped and sealed, and the top is formed into a gable roof shape (patent) Reference 1).

In addition, a paper packaging container that reduces the volume of trash by making it easier for the user to fold the packaging container when the packaging container is disposed of by placing a folding ruled line on the paper-belt type paper packaging container. Known (see Patent Documents 2 and 3).

Japanese Patent Laying-Open No. 2015-85945 Japanese Utility Model Publication No. 56-43717 Japanese Utility Model Publication No. 61-137516

When the side plate 111 of the packaging container body 102 is to be folded into the packaging container when folding the paperbelt-type paper packaging container, as shown in FIG. There is a method of pushing the corner 120 where the folded plate 108 and the side wall 111 are in contact with the finger toward the inside of the packaging container. However, a certain amount of force is required for the operation of pushing the corner portion of the packaging container with a finger, and the folding operation may be hindered by the corner portion biting into the finger during the folding operation.

The present invention has been made in view of such problems, and an object of the present invention is to provide a gobeltop-type packaging container that can be easily folded in a folding operation with less burden on the finger.

One aspect of the present invention for solving the above problems is a roof plate, a folded plate folded under the roof plate, a side plate connected to the lower end of the folded plate, and a boundary line between the folded plate and the side plate. And a ruled line formed in a predetermined range, wherein the ruled line is not provided with a predetermined length at the center in the length direction of the boundary line.

According to the present invention, it is possible to provide a gobeltop-type packaging container that can be easily folded in a folding operation with little burden on the fingers.

FIG. 1 is a perspective view of a gobeltop packaging container according to an embodiment of the present invention. FIG. 2 is a front view and a cross-sectional view of a folded plate and a side plate according to an embodiment of the present invention. FIG. 3 is a plan view of a blank according to an embodiment of the present invention. FIG. 4 is a cross-sectional view schematically showing a laminated structure of sheet materials according to an embodiment of the present invention. FIG. 5A is a diagram showing a method for disassembling a gobbel top packaging container according to an embodiment of the present invention. FIG. 5B is a diagram showing a method for disassembling a gobbel top packaging container according to an embodiment of the present invention. FIG. 5C is a diagram showing a method for disassembling a gobble top packaging container according to an embodiment of the present invention. FIG. 5D is a diagram showing a method for disassembling a gobbel top packaging container according to an embodiment of the present invention. FIG. 6 is a plan view of a blank according to a modification of the present invention. FIG. 7 is a plan view of a blank according to a modification of the present invention. FIG. 8 is a plan view of a blank according to a modification of the present invention. FIG. 9 is a diagram illustrating a method for disassembling a gobeltop packaging container according to a conventional technique.

(Packaging container)
FIG. 1 is a perspective view of a gobeltop-type packaging container 100 (hereinafter simply referred to as a packaging container 100) according to an embodiment of the present invention, and FIG. Indicates. In the following description, for convenience, the vertical direction when the packaging container 100 is set upright is defined as the vertical direction.

The packaging container 100 is formed by bending a blank 110 processed from a sheet material into a box shape and overlapping and sealing the end portions. The packaging container 100 includes a top portion 101 that becomes an upper portion, a trunk portion 102 that becomes a side surface, and a bottom portion 103 that becomes a lower portion when standing upright. The top portion 101 includes two roof plates 106 (106 a and 106 b), and a folding plate 107 and a folded plate 108 that are folded between the roof plates 106. A side plate 111 a is connected to the lower end of each roof plate 106. Further, a side plate 111 b is connected to the lower end of each folded plate 108. As an example, the

side plates

111a and 111b are formed so that a weakened portion 105 whose strength is weakened wraps around the body portion 102 in the width direction that is the left-right direction when the packaging container 100 is erected. . Note that the fragile portion 105 may not be formed.

As shown in FIG. 2, a ruled line 121 is formed on a boundary line 125 between the folded plate 108 and the side plate 111b. The ruled line 121 is not provided with a predetermined length at the center in the length direction of the boundary line 125. Hereinafter, a portion where the ruled line 121 is not provided with a predetermined length is referred to as a dividing portion 116 for convenience. The dividing portion 116 is preferably provided on each of the boundary lines 125 of the two folded plates 108 and the side plate 111b, but may be provided only on one side. The ruled line 121 can be formed by a known technique, for example, by pressing the blank 110 from both sides with a roller or the like.

As shown in the cross-sectional view of FIG. 2, the dividing portion 116 does not form the corner portion 120 having a small radius of curvature between the folded plate 108 and the side plate 111b, and the position becomes a gently curved arc shape.

(blank)
In FIG. 3, the top view of the blank 110 which is an example of the blank used as the raw material of the packaging container 100 is shown. The blank 110 includes

roof plates

106a and 106b that constitute the top portion 101, folding plates 107 and folded plates 108,

side plates

111a and 111b that constitute the trunk portion 102, a bottom plate 112 that constitutes the bottom portion 103, and end portions. And a formed seal portion 113. At the center in the longitudinal direction on the boundary line 125 between the folded plate 108 and the side plate 111b connected to the lower end of the folded plate 108, a dividing portion 116 having no ruled line 121 is formed. In the

side plates

111 a and 111 b, the fragile portion 105 is formed so as to go around the trunk portion 102.

The width of the dividing portion 116 is preferably 7 mm or more, and may be formed over the entire width direction of the side wall portion 111b. This is because, when the width of the dividing portion 116 is less than 7 mm, when the packaging container 100 is folded, the fingers cannot be fully settled in the dividing portion 116 and the effect cannot be obtained sufficiently.

(Sheet material)
FIG. 4 is a cross-sectional view schematically showing an example of the laminated structure of the sheet material 200 that is a laminated body used for the blank 110 and the structure of the fragile portion 105. The sheet material 200 includes a printing layer 208 / thermoplastic resin layer 201 / paper base material layer 202 / adhesive resin layer 203 / barrier layer 204 / adhesive layer 205 / sealant layer in order from the outside to the inside of the packaging container 1. 206.

The thermoplastic resin layer 201 can be formed on the paper base layer 202 by extrusion lamination or the like using a low density polyethylene resin (LDPE), a linear low density polyethylene resin (LLDPE), or the like.

A print layer 208 may be provided outside the thermoplastic resin layer 201 to display a pattern or product information. The printing layer 208 can be formed by a method such as gravure printing or offset printing using a known ink. Adhesiveness such as corona treatment can be applied to the thermoplastic resin layer 201 to enhance the adhesion with the printing layer 208. An overcoat layer may be provided outside the printed layer 208 in order to improve wear resistance or surface decoration.

For the paper base layer 202, paperboard such as milk carton base paper can be used. The basis weight and density can be appropriately selected depending on the capacity and design of the container. For example, those having a basis weight of 200 g / m ^{2 to} 500 g / m ² and a density of 0.6 g / cm ^{3 to} 1.1 g / cm ³ can be used.

The adhesive resin layer 203 is a layer made of a polyolefin resin having a function of adhering the paper base material layer 202 and the base material film layer 204. Specifically, high density polyethylene resin (HDPE), medium density polyethylene resin (MDPE), LDPE, LLDPE, ethylene / methacrylic acid copolymer (EMAA), ethylene / acrylic acid copolymer (EAA), ionomer, polypropylene (PP) or the like can be used. In order to increase the adhesive strength, the surface of the paper base material layer 202 or the barrier layer 204 may be subjected to corona treatment, ozone treatment, anchor coating, or the like. Alternatively, instead of the adhesive resin layer 203, an adhesive layer using a dry laminate adhesive or the like may be used. The thickness is preferably 10 μm or more and 60 μm or less. Sufficient adhesive strength can be obtained by setting it as 10 micrometers or more.

The barrier layer 204 is a vapor-deposited film including a vapor-deposited layer 204b obtained by vapor-depositing a metal such as aluminum, silica, or alumina, and a base film 204a, or a laminated film obtained by dry-laminating a metal foil 204c such as aluminum on the base film 204a. Can be used. The thickness of the vapor deposition layer 204b can be 5 nm or more and 100 nm or less, and when polyethylene terephthalate is used as the base film 204a, the thickness can be 6 μm or more and 25 μm or less.

As the barrier layer 204, a barrier-coated polyethylene terephthalate film obtained by applying a barrier coating to a polyethylene terephthalate film or a barrier film made of a barrier material such as EVOH can be used. When a film obtained by dry laminating aluminum foil as the metal foil 204c and polyethylene terephthalate film as the base film 204a is used, the thickness of the aluminum foil can be 5 μm or more and 15 μm or less, and the thickness of the polyethylene terephthalate layer is It can be 6 μm or more and 25 μm or less. The thickness of the polyethylene terephthalate layer is preferably about 12 μm from the viewpoint of ease of processing by laser light described later.

In any case, a resin film such as nylon or polypropylene (PP) can be used for the base film 204a in addition to polyethylene terephthalate (PET). In particular, a biaxially stretched film of PET is suitable because it has little expansion and contraction during vapor deposition and bonding.

For the adhesive layer 205, a dry laminating adhesive or a non-solvent laminating adhesive may be used, or an extruding process may be used to adhere with a polyolefin resin. The coating amount is preferably 0.5 g / m ² or more and 7.0 g / m ² or less.

HDPE, MDPE, LDPE, LLDPE, etc. can be used for the sealant layer 206. There may also be a layer partially containing polybutene. Among the above materials, LLDPE is particularly preferable. In particular, those having a density of 0.925 g / cm ³ or less and MI (melt index) of 4 or more are preferable. The sealant layer 26 is preferably an unstretched film formed by a T-die method or an inflation method.

The fragile portion 105 is constituted by groove-shaped scratched

portions

207a and 207b formed at a predetermined depth on at least the paper base layer 202 and the base film layer 204. The scratch processing portion 207a only needs to be formed on at least the paper base material layer 202. As shown in FIG. 4, the thermoplastic resin layer laminated on the outside of the paper base material layer 202 together with the paper base material layer 202. 201 and the printing layer 208 may be formed. The scratched portion 207b is desirably formed at a depth that does not penetrate the base film layer 204, but even if it penetrates in a narrow range, the barrier property is less affected. May be penetrated. The scratched

portions

207a and 207b can be formed using a known technique such as laser light or a blade shape.

The laminated structure of the sheet material 200 is not limited to this structure, and the thickness, order of lamination, and material of each layer can be arbitrarily changed according to necessary functions.

(Dismantling method)
5A to 5D show an example of a method for disassembling the packaging container 100. FIG. With reference to FIGS. 5A to 5D, each step of the method for disassembling the packaging container 100 will be described.

<Crushing process>
5A and 5B show a process of crushing the packaging container 100. As shown in FIG. 5A, in this step, the user of the packaging container 1 crushes the trunk portion 102 by pushing the two opposing side plates 111a in a direction in contact with each other. At this time, the side plate 111 b is folded in the inner direction of the packaging container 100.

In this step, the user can use the dividing part 116. Specifically, as shown in FIG. 5B, by pushing the dividing portion 116 inward of the packaging container 100 with the thumb 119 or the like, the entire dividing portion 116 is gradually deformed, and the folded plate 108 and the side plate 111b. Can be easily folded inside the packaging container 100 with a small force.

<Bending process>
FIG. 5C shows a process of bending the packaging container 100 along the fragile portion 105. In this step, the user first bends the side plate 111 in one direction along the fragile portion 105 (left diagram in FIG. 5C). Thereafter, the side plate 111 is bent along the fragile portion 105 in the direction opposite to the previous direction (the right diagram in FIG. 5C). Bending may be performed multiple times in each direction. By this process, the fracture of the fragile portion 105 proceeds.

<Roofing plate separation process>
FIG. 5D shows a process of separating a part of the top portion 101 and the side plate 111 from the packaging container 100 along the fragile portion 105. In this step, the user tears and separates a part of the side plate 111 from the packaging container 100 along the fragile portion 105 (left diagram in FIG. 5D). In the previous step, since the fragile portion 105 is at least partially broken, the user can separate the upper portion of the side plate 111 from the fragile portion 105 with a slight force. The separated packaging container 100 is separated into a state in which the upper portion and the top portion 101 of the trunk portion 102 and the lower portion of the trunk portion 102 are separately separated as shown in the right diagram of FIG. 5D.

(Modification)
Folding can be made easier by adding auxiliary ruled lines to the folded plate 108 and the side plate 111b. 6 to 8 show partial plan views of the blanks 111 to 113 provided with auxiliary ruled lines.

FIG. 6 shows a blank 111 including an auxiliary ruled line 122 composed of one arcuate curve and two straight lines surrounding the dividing portion 116. FIG. 7 shows a blank 112 including a diamond-shaped auxiliary ruled line 123 composed of four straight lines surrounding the dividing portion 116. FIG. 8 shows a blank 113 including four auxiliary ruled lines 124 formed in a predetermined range on a virtual line extending from the dividing portion 116 toward the outer edge of the folded plate 108 or the side plate 111b.

If the auxiliary ruled line surrounds the dividing portion 116 or is formed within a predetermined range on an imaginary line extending from the dividing portion 116 toward the outer edge of the folded plate 108 or the side plate 111b, the shape and number of the auxiliary ruled lines are as described above. The form is not limited.

By adding each auxiliary ruled line, the folded plate 108 and the side plate 111b can be bent from the auxiliary ruled line, so that the folding from the pushing of the folded plate 108 and the side plate 111b proceeds smoothly. For this reason, folding work becomes easier.

¡Packaging containers according to Examples 1 to 4 and Comparative Example were prepared, and sensory evaluation was performed on the ease of folding. A blank for producing a packaging container having a capacity of 2 liters was prepared to produce the following packaging container.

Example 1
The width of the dividing part 116 was set to 30 mm.

(Example 2)
The width of the dividing part 116 was set to 30 mm, and the auxiliary ruled line 122 was formed.

(Example 3)
The width of the dividing part 116 was set to 30 mm, and the auxiliary ruled line 123 was formed.

Example 4
The width of the dividing part 116 was set to 30 mm, and the auxiliary ruled line 124 was formed.

(Comparative example)
The dividing part 116 was not provided.

A sensory evaluation of the ease of folding each manufactured packaging container was performed by 30 adult men and 30 adult women. More than 80% of the subjects determined that the packaging container that could be easily folded was a folding packaging container.

As a result of the evaluation, the packaging containers according to Examples 1 to 4 were easily folded by 80% or more of the subjects. On the other hand, since the dividing part 116 is not formed in the packaging container according to the comparative example, less than 80% of the subjects were able to easily fold the packaging container.

From this evaluation result, it was confirmed that a packaging container that can be easily folded can be provided by forming the dividing portion 116 and the auxiliary ruled line shape.

As described above, according to the present invention, the user can fold the packaging container 100 by placing a finger or the like on the dividing portion 116 that has an arc shape with a gently curved cross section during the folding operation. Therefore, it is possible to provide a gable-top type packaging container that can be easily folded with little burden on the finger.

The present invention is useful for paper packaging containers that contain liquids and the like.

DESCRIPTION OF SYMBOLS 100 Govel top type packaging container 101 Top part 102 Body part 103 Bottom part 105

Fragile part

106a, 106b Roof board 107 Folding board 108 Folding board 110

Blank

111a, 111b Side board 112 Bottom board 113 Seal part 116 Dividing part 117 Convex part 118 Concave part 119 Thumb 120 Corner portion 121 Ruled line 122 to 124 Auxiliary ruled line 125 Boundary line 200 Sheet material 201 Thermoplastic resin layer 202 Paper substrate layer 203 Adhesive resin layer 204 Barrier layer

204a Base film

204b Deposition layer

204c Metal foil 205 Adhesive layer 206 Sealant layer 207a 207b Scratched part

Claims

With roofing boards,
A folded plate folded under the roof plate;
A side plate connected to the lower end of the folded plate;
A gobeltop type packaging container including a ruled line formed in a predetermined range on a boundary line between the folded plate and the side plate,
The ruled line is a gobel-top type packaging container in which a predetermined length is not provided at the center in the length direction of the boundary line.
The gobel top type packaging container according to claim 1, wherein the folded plate and the side plate are formed with auxiliary ruled lines surrounding a region where the ruled lines are not provided with a predetermined length.
An auxiliary ruled line formed in a predetermined range on an imaginary line extending from an area where the ruled line is not provided in a predetermined length to an outer edge of the folded plate or the side plate is formed on the folded plate and the side plate. The gable-top type packaging container according to claim 1.