JP2014148348A - Paper made liquid container - Google Patents

Abstract

The present invention provides a paper liquid container that can hook a peeled tab material onto a container body, does not disturb the contents, and does not scatter waste.
A container body 100 including a bottom plate, a side wall plate 10 and a top plate 20 made of a laminated material having a paper layer, and a tab material 200 that covers and seals an opening 22 provided on the top plate. A paper liquid container comprising: a sealing portion 201 in which a tab material covers and seals the opening; and a knob portion 202 for pinching with a finger when opening the tab. After peeling from the main body, hook portions 204 that hook the container main body were provided on both the left and right sides.
[Selection] Figure 5

Description

  The present invention relates to a paper liquid container. In particular, the present invention relates to a paper liquid container made of a laminated material mainly composed of a paper layer for storing contents such as beverages. Furthermore, the present invention relates to a paper liquid container having a drinking mouth portion suitable for drinking using a straw or the like, and the drinking mouth portion is sealed with a tab material having easy-openability.

  In recent years, paper liquid containers with a mouthpiece covered with an easily openable tab material have been used in the liquid food field as an alternative to conventional can containers because of their ease of disposal after use. . Examples of the shape of the paper liquid container include a cylindrical shape and a rectangular tube shape.

  These paper liquid containers are filled with the contents by filling sterilized fruit juice and liquid drinks from the opening serving as the mouth opening provided on the top plate, and then sealing the opening with a tab material. A paper liquid container is obtained.

  Such a tab material that seals the mouth portion of a paper liquid container includes, for example, a synthetic resin synthetic paper having a folding property and a synthetic resin film having a barrier property laminated. The tab material is long provided so that one end is sealed at the center of the top plate, the mouth portion is sealed and sealed, and the other end is hooked on the joint portion of the top plate and the side wall plate (Patent Document 1).

  This tab material has a problem that the knob portion is short and narrow, and the easy-openability is poor. Further, when the tab material is peeled off from the top plate during use, there is a problem that the tab material is completely separated from the top plate and dust is scattered.

  There is also a tab material having a steion function. This tab material is a substantially strip-shaped tab material that reaches the side wall plate beyond the edge of the top plate, and the portion that is in close contact with the side wall plate of the tab material is a knob portion, and an adhesive layer is formed on the inner surface of the knob portion. The periphery of the opening is sealed to the top plate as a peripheral seal portion, and the tab material fixing portion is formed on the edge closer to the center than the opening of the top plate by the seal with the top plate continuously to the peripheral seal portion. ing.

  In this tab material, an adhesive layer is formed inside the vicinity of the tip of the knob portion, so that the tip portion of the tab material peeled off leaving the tab material fixing part is turned over and attached to the top plate. Can be fixed to the top plate and steioned (Patent Document 2).

  However, since this tab material is fixed in a large arc shape when it is stained, the contents attached to the tab material or the tab material may become a problem when drinking the contents.

  Another tab material is substantially strip-shaped, and is attached to the top plate with a peripheral seal portion that seals the periphery of the opening of the drinking mouth, and a tab portion is formed at a location other than the peripheral seal portion of the tab material. A hole is provided so that a notch is provided from the hole to the outer edge, and a seal is provided in a part other than the peripheral seal and the knob, and is attached to the top plate.

  When opening, first hold the knob, pull up to the top so as to cut along the notch, open along the notch from the hole to the outer edge, and further pull the knob to the top, the periphery of the opening The seal portion is peeled off to expose the opening.

  Finally, the tab portion of the tab material is fixed to a place where it does not obstruct the drinking mouth by hooking the tip portion of the tab portion to a seal portion provided other than the peripheral seal portion and the knob portion (Patent Document 3).

  This tab material has a steionic function and does not get in the way when drinking, it is excellent, but because it has a hole and a notch, it is complicated to manufacture and has careful handling when filling and sealing, etc. Manufacturing is complicated and can lead to increased costs.

  Known documents are shown below.

Japanese Patent Laid-Open No. 10-324361 JP 2005-178830 A JP 2010-235120 A

  The present invention has been made in view of the circumstances described above, and is a paper liquid that can hook the peeled tab material onto the container body, does not get in the way of drinking the contents, and does not scatter waste. The challenge is to provide a container.

  The invention according to claim 1 of the present invention includes a bottom plate, a side wall plate, and a container body provided with a top plate made of a laminated material having a paper layer, and a tab that covers and seals an opening provided in the top plate. A liquid container made of paper, wherein the tab material covers and seals the opening, and a knob for pinching with a finger when opening, After the tab material is peeled off from the container main body, a hook for hooking the container main body is provided on both the left and right sides.

  The invention according to claim 2 of the present invention is characterized in that a crease in the direction toward the sealing portion is provided at the center of the hook portions on both the left and right sides of the tab material. It is a liquid container.

  The paper liquid container of the present invention is provided with the tab material as described above, and the tab material that has been peeled off can be hooked on the container body, so that it does not get in the way without getting on the face when drinking the contents, Moreover, the waste is not scattered.

It is explanatory drawing which showed typically an example of the paper-made liquid container of this invention by the perspective view. It is XX sectional drawing of FIG. It is explanatory drawing which showed typically the tab material of an example of the paper-made liquid container of this invention with the plane. It is explanatory drawing which showed typically an example of the paper liquid container of this invention with the plane. It is explanatory drawing which showed typically the state which hooked the tab material peeled in the example of the paper liquid container of this invention on the container main body by the perspective view.

Hereinafter, embodiments for carrying out the present invention will be described.
FIG. 1 is an explanatory view schematically showing an example of a paper liquid container of the present invention in perspective, and FIG.
-X sectional view, FIG. 3 is an explanatory view schematically showing a tab material of an example of the paper liquid container of the present invention in a plan view, and FIG. 4 is a schematic plan view of an example of the paper liquid container of the present invention. It is explanatory drawing shown by.

  The paper liquid container of this example includes a container body 100 and a tab material 200 as shown in FIG. As shown in the cross-sectional view of FIG. 2, the container body 100 is provided with a side wall plate 10, a top plate 20 at the upper end, and a bottom plate 30 at the lower end.

  The side wall plate 10 is provided with an overlapping portion 11 which is sealed by overlapping both end portions, and is wound in a cylindrical shape. The top plate 20 has an upper bent portion 21 whose peripheral edge portion is bent upward, is inserted into the upper end portion of the side wall plate 10, and the upper end of the side wall plate 10 is folded inward to provide the upper end folded portion 12. The upper bent portion 21 of the top plate 20 is covered and sealed.

  The bottom plate 30 has a lower bent portion 31 whose peripheral portion is bent downward, is inserted into the lower end portion of the side wall plate 10, is folded back at the lower end of the side wall plate 10, and is provided with a lower end folded portion 13. The lower bent portion 31 of 30 is covered and sealed.

  An opening 22 serving as a drinking mouth is provided in the central portion of the top plate 20. And the tab material 200 is sealed so that peeling is possible so that this opening part 22 may be covered, and the opening part 22 is sealed.

  As shown in FIG. 3, the tab member 200 includes a sealing portion 201 that covers and seals the opening 22 of the container body 100, and a knob portion 202 that is pinched with a finger when the container is opened. A notch portion 203 is provided between both sides, and a hook portion 204 for hooking the container body 100 is provided on the knob portion 202.

  Further, a crease 205 in the direction toward the sealing portion 201 is provided at the center of the hook portions 204 on both the left and right sides of the tab member 200. In this example, the crease 205 is continuously provided from the knob portion 202 to the sealing portion 201.

  Then, as shown in FIG. 4, the opening 22 serving as a drinking mouth provided on the top plate 20 of the container body 100 is closely attached and sealed so as to be covered with the sealing portion 201 of the tab material 200 to seal the container body 100. doing.

  FIG. 5 is an explanatory view schematically showing a state in which the tab material peeled off in the example of the paper liquid container of the present invention is hooked on the container body.

  In order to open the paper liquid container, the tab portion 200 of the tab member 200 is grasped with a finger and lifted to peel off the sealing portion 201 and open the opening 22. As shown in FIG. 5, the tab material 200 that has been peeled is fixed to the upper end folded portion 12 at the upper end of the side wall plate 10 of the container body 100 by hooking the hook portion 204.

  Since the knob portion 202 is provided large, it is easy to pinch, and by having the knob portion, the tab material 200 can be easily peeled off from the top plate 20 of the container body 100 and opened.

  Moreover, since the hook part 204 is provided in the tab material, the hook part 204 can be hooked on the upper end folding part 12 at the upper peripheral edge of the container body 100 and can be stably fixed. For this reason, the contents are not attached to the face when the drink is taken, and the waste is not scattered.

Further, since the tab material 200 is provided with a crease 205, it is easy to bend the crease 205,
It can be bent and easily hooked to the upper end folding portion of the upper edge of the container body. Moreover, it can adhere | attach along a curved side wall board by bending. Furthermore, the end folding portion can be sandwiched with a force to return the bending and stably fixed.

  Each of the side wall plate 10, the top plate 20, and the bottom plate 30 is made of a laminated material in which a paper layer is a main component and a heat-sealable resin layer is provided on the front and back. If necessary, a barrier layer can be provided between the paper layer and the front and back heat-sealable resin layers.

Paperboard is used for the paper layer. Particularly preferably, a milk carton base paper is used. The basis weight is 140 to 400 g / m ² .

  As the barrier layer, a vapor deposition film of an inorganic compound or metal, or a resin film having a high gas barrier property is used.

  As the resin for the vapor deposition base film of the vapor deposition film, polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), polystyrene (PS) ), Polyolefins such as nylon-6, nylon-66, etc. (PA), polycarbonate (PC), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyvinyl Alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyether sulfone (PES), polymethyl methacrylate (PMMA), and the like can be used. Of these, polyester films and polyamide films are preferred from the viewpoints of heat resistance, strength, suitability for vapor deposition, and the like. Moreover, although the thickness of these films is not specifically limited, The thickness of 6-25 micrometers is preferable.

  As the inorganic compound to be deposited, aluminum oxide, silicon oxide, tin oxide, magnesium oxide, or a mixture thereof can be used. Moreover, aluminum, tin, etc. can be used as a metal to vapor-deposit.

  The vapor deposition base film of the vapor deposition film may be provided with a vapor deposition anchor layer by applying a vapor deposition anchor coating agent in order to improve adhesion to an inorganic compound or metal to be vapor deposited. Moreover, you may provide a protective layer in the outer surface of the vapor deposition layer which vapor-deposited. A protective layer may be provided by applying a mixed solution of a water-soluble polymer and a metal alkoxide or a hydrolyzate thereof.

  As the resin film having a high gas barrier property, a biaxially stretched film of a resin such as MXD-nylon, polyvinyl alcohol (PVA), or ethylene-vinyl alcohol copolymer (EVOH) can be used.

  An unstretched film of low density polyethylene (LDPE) or linear low density polyethylene (LLDPE), or an unstretched film of polypropylene (CPP) can be used for the heat-sealable resin layers on the front and back sides.

  Furthermore, a layer such as another base film layer can be provided between the heat-sealable resin layers on the front and back sides. Examples of the base film layer include polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT), and polyamides (PA) such as nylon-6, nylon-66, and MXD nylon. A stretched or unstretched film can be preferably used.

The laminated material which comprises the tab material 200 consists of a surface base material and an easy peel resin layer.
Moreover, a barrier layer can be provided as needed. For example, it is good also as a layer structure which laminated | stacked the paper layer, the barrier layer, and the easy peel resin layer one by one on the surface base film using the surface base film as a surface base material.

  As a front substrate film, a resin such as a polyester such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyamide (PA) such as nylon-6, nylon-66, MXD nylon, etc. Film can be used.

For the paper layer, paper of about 40 to 100 g / m ² is used instead of paperboard. As the barrier layer, a vapor deposited film of an inorganic compound or metal similar to the barrier layer used for the side wall plate 10, the top plate 20, and the bottom plate 30, or a resin film having a high gas barrier property is used.

  As the easy peel resin layer, a resin that can be heat-sealed so as to be peelable from the heat-sealable resin layer on the front side of the top plate 20 is used. It may be provided by extruding as a molten resin by an extrusion lamination method, or may be provided by laminating a film formed in advance using a polyester two-component curable adhesive by a dry lamination method.

  The resin used for the easy peel resin layer is a mixed resin containing the same type of resin as the resin of the heat-sealable resin layer on the front side of the top plate 20, for example, if the resin of the heat-sealable resin layer 46 is polyethylene. In addition, polyethylene as one component can be selected from mixed resins with other polyolefins.

  Alternatively, a copolymer having the same monomer as the resin monomer of the heat-sealable resin layer 46 as one component, for example, if the resin of the heat-sealable resin layer 46 is polyethylene, a copolymer of ethylene and propylene is used. can do.

  Hereinafter, the manufacturing method of the paper liquid container of this invention is demonstrated.

  In order to manufacture a paper liquid container, first, the side wall plate 10 is rolled into a cylindrical shape, both end portions are overlapped, heated with hot air, each heat-sealable resin layer is melted, pressure-bonded and heat-sealed. The overlapping portion 11 is provided to make a cylinder.

  The upper bent portion 21 is provided by bending the peripheral portion of the top plate 20 upward in the same manner as forming the bottom of a conventional paper cup. The top plate 20 is inserted into the upper end portion of the side wall plate 10, the upper bent portion 21 of the top plate 20 and the upper end portion of the side wall plate 10 are heated with hot air to melt each heat-sealable resin layer, and the side wall plate 10 is folded back inward, and an upper-end folded portion 12 is provided to cover the upper bent portion 21 of the top plate 20, and heat-sealed by pressure bonding.

  Similarly, the lower bent portion 31 is provided by bending the peripheral portion of the bottom plate 30 downward. The bottom plate 30 is inserted into the lower end portion of the side wall plate 10, the lower bent portion 31 of the bottom plate 30 and the lower end portion of the side wall plate 10 are heated with hot air, and each heat-sealable resin layer is melted. The lower end is folded inward, the lower end folded portion 13 is provided, the lower bent portion 31 of the bottom plate 30 is covered, and crimped and heat sealed.

  And it attaches by the heat seal so that the opening part 22 of the top plate 20 may be plugged up with the tab material 200 pierced into the shape shown in FIG. Thereby, the paper liquid container of this example is manufactured.

  Specific examples of the present invention will be described below.

<Laminated material for side wall plate, top plate, bottom plate>
Laminated materials used for the side wall plate, top plate, and bottom plate constituting the paper liquid container of the present invention were prepared.

  A polyethylene terephthalate film with 12 μm of polyethylene terephthalate film on which silicon oxide is deposited as a barrier layer is prepared. The vapor deposition surface of the inorganic oxide deposited film is coated on another 12 μm of polyethylene terephthalate film, and a polyester resin-based two-component reactive adhesive is used. And laminated in a dry lamination method.

Subsequently, a low-density polyethylene film (thickness 60 μm) having a density of 0.920 g / cm ³ serving as a heat seal resin layer on the back side was laminated in the same manner on the polyethylene terephthalate film surface of the inorganic oxide vapor-deposited film, A film was created.

A paper board having a basis weight of 320 g / m ² is prepared as a paper layer, and a low density polyethylene film (thickness 60 μm) having a density of 0.920 g / cm ³ to be a heat-seal resin layer on the front side is prepared on the outer surface of the paper board. Lamination was performed by a dry lamination method using a polyester resin-based two-component reactive adhesive.

  Next, the polyethylene terephthalate film surface of the interior film was similarly laminated on the inner surface of the paperboard by a dry lamination method using a polyester resin-based two-component reactive adhesive. Thereby, the laminated material for a side wall board, a top plate, and a baseplate was created.

The layer structure of the laminated material for the side wall plate, top plate, and bottom plate is as follows.
Front side heat seal resin layer (density: 0.920 g / cm ³ , LDPE 60 μm) / paper layer (basis weight 320 g / m ² paperboard) / PET 12 μm / barrier layer inorganic oxide vapor-deposited film (silicon oxide / PET 12 μm) ) / Back side heat seal resin layer (density: 0.920 g / cm ³ , LDPE 60 μm).

<Laminated material for tab material>
The laminated material for tab materials which comprises the paper liquid container of this invention was created.

A biaxially stretched polyethylene terephthalate film with a thickness of 12 μm is prepared as a front substrate film, and a paper layer basis weight of 83 g / m ² and a polyester resin-based two-component reactive adhesive are used, by a dry lamination method. Laminated.

  Then, the inorganic oxide vapor deposition film which vapor-deposited silicon oxide on the polyethylene terephthalate film 12micrometer used as a barrier layer was laminated | stacked by the dry lamination method similarly on the paper layer surface side.

  Furthermore, an easy peel film of an easy peel resin layer was laminated on the surface of the laminated oxide oxide deposited film in the same manner by a dry lamination method. As the easy peel film, an unstretched film of 35 μm made of a mixed resin obtained by adding and mixing a high density polyethylene resin and a low density polyethylene resin to polypropylene was used.

The layer structure of the tab material laminate material is as follows.
Front base film (PET 12 μm) / paper layer (basis weight 83 g / m ² paper) / barrier layer inorganic oxide vapor-deposited film (silicon oxide / PET 12 μm) / easy peel resin layer (HDPE and LDPE were added and mixed) CPP 35 μm).

<Creation of paper liquid container>
The side wall plate, the top plate, and the bottom plate laminated material were formed into respective blank shapes by slitting, cutting, punching, and the like. The tab material laminate material was formed into a tab material having the shape shown in FIG. 3 by slitting, cutting, punching, or the like.

  Using these blanks and tab materials, a paper container manufacturing machine and a liquid filling machine were prepared based on the above-mentioned <Method for manufacturing a paper liquid container>, filled with 200 ml of water, having a diameter of 53 mm and an internal volume of 235 ml. A paper liquid container was created.

<Evaluation>
When the openability of the obtained paper liquid container was evaluated, it was easy to pinch because the knob part was large, and the tab material was easily peeled off from the top plate of the container body by having the knob part and opened. I was able to do it.

  Moreover, since the hook part was provided in the tab material, the hook part was able to be hooked and fixed to the upper-end folding part of the upper-end periphery of a container main body. For this reason, the contents did not stick to the face when the drink was taken, and the waste was not scattered.

  Further, since the tab material is provided with a crease in the vertical direction, it was able to be bent from the crease and easily hooked to the upper end folding portion of the upper edge of the container body. Further, by folding, it was possible to make close contact along the curved side wall plate, and further, the upper end folded portion was sandwiched by a force to return the bending and stably fixed.

DESCRIPTION OF SYMBOLS 100 ... Container main body 10 ... Side wall plate 11 ... Overlapping part 12 ... Upper end folding part 13 ... Lower end folding part 20 ... Top plate 21 ... Upper folding part 22 ... Opening 30 ... Bottom plate 31 ... Bending part 200 ... Tab material 201 ... Sealing part 202 ... Knob part 203 ... Notch part 204 ... Hook part 205 ... Crease

Claims (2)

  A paper liquid container comprising a container body including a bottom plate, a side wall plate, and a top plate made of a laminated material having a paper layer, and a tab member that covers and seals an opening provided in the top plate. The tab material covers the opening and seals, and a knob portion for pinching with a finger when opening the tab material, after the tab material is peeled from the container body on the knob portion A paper liquid container characterized in that hook portions for hooking the container body are provided on both the left and right sides.   2. The paper liquid container according to claim 1, wherein a crease in a direction toward the sealing portion is provided at a center of a hook portion on both left and right sides of the tab material.

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