JP6248558B2 - Paper container with contents - Google Patents

Description

  The present invention relates to a paper container containing contents in which liquid contents are hermetically packaged by a paper container.

  A conventional paper container for storing liquid contents is disclosed in Patent Document 1. This paper container is provided with a paper base material layer having a hole and an interior material covering the hole, and a thermal adhesive layer is provided on the inner surface and the outer surface of the paper base material layer. A predetermined box-shaped paper container is formed by bending the paper base material layer and thermally bonding the opposing thermal adhesive layers.

  After the contents sterilized by heating with the upper end opened are poured into the paper container, the contents are sealed by thermal bonding, and the contents are sealed and packaged under reduced pressure by natural cooling. As a result, a paper container with contents in which liquid contents are sealed and packaged is distributed as a product.

  When a purchaser of a paper container containing contents opens the upper part of the paper container and the contents are poured out, the remaining amount of the contents is visually recognized through a window part whose hole is covered with the interior material. Thereby, the convenience of the paper container with contents can be improved.

  In addition, a paper container containing contents in which a pouring tool is provided on the top of the paper container is also known. The pouring tool has a cylindrical portion that is thermally bonded to the paper container to form a spout, and a cap that is screwed into the cylindrical portion. In addition, a paper container with contents provided with a shrink pack that covers the paper container with a transparent film is also known.

Japanese Patent Laying-Open No. 2005-96777 (pages 4 to 6, FIG. 2)

  However, according to the above-described conventional paper container, the sealed state of the paper container may be released due to peeling of the thermal adhesive layer, breakage of the cap, generation of pinholes due to poor sealing after filling the contents, and the like. At this time, although the body of the paper container expands, it is difficult to easily detect the release of the seal of the paper container during the distribution process. For this reason, there is a problem that the purchaser does not notice even if the contents change due to the release of the sealing of the paper container, and the safety of the paper container containing the contents is lowered.

  Further, there are cases where it is detected that a puncture hole has been formed in the paper container by a needle or the like, or that a foreign object has been mixed into the paper container by a syringe or the like. In these cases, similarly to the above, since the seal release by the piercing hole of the paper container cannot be easily detected in the distribution process, the paper container containing the contents is collected and inspected by the vendor. Therefore, there is a problem that the cost for the inspection becomes large.

  It is an object of the present invention to provide a paper container with a liquid content that can be easily detected at a glance when the paper container is unsealed by a pinhole or the like.

  In order to achieve the above object, the present invention provides a paper container containing contents in which a liquid content is hermetically packaged in a reduced pressure state with a paper container, the paper container having a window portion through which the contents can be visually recognized, and the paper When the container is released from the sealed state, the liquid level after the contents are lowered is arranged in the window portion.

  According to this configuration, for example, the liquid content in which the paper container is heat-sterilized is injected and then sealed and naturally cooled, and the content is sealed and packaged in a reduced pressure state. When the sealed state of the paper container is released by a pinhole or the like, the liquid level of the contents drops due to atmospheric pressure. At this time, the liquid level of the lowered contents is arranged in the window, and the lowering of the liquid level is visually confirmed to detect the release of the sealing of the paper container.

  According to the present invention, in the paper container with contents, the liquid level of the contents is arranged above the upper end or the upper end of the window portion in a sealed state of the paper container. According to this configuration, the liquid level of the contents is not visually recognized from the window portion when the paper container is sealed, and the liquid level of the contents is visually recognized from the window portion when the seal is released.

  According to the present invention, in the content-containing paper container having the above-described configuration, the liquid level of the content is arranged below the upper end of the window portion in a sealed state of the paper container, and a marking indicating the liquid level of the content is provided. It is characterized by that. According to this configuration, the liquid level of the contents is arranged at the height of the marking in the sealed state of the paper container, and the liquid level that has fallen below the marking in the sealed state is visually recognized from the window portion.

  According to the present invention, in the paper container with contents, the window is provided from the upper part to the lower part of the paper container. According to this configuration, the remaining amount of the contents reduced by use is visually recognized through the window portion.

  Further, the present invention is a paper container containing the contents of the above configuration, wherein the paper container is formed by a laminate in which a paper base material layer and an interior material disposed on the entire inner surface of the paper base material layer are laminated, The window is formed by covering a hole provided in the paper base material layer with the interior material.

Further, the present invention is a paper container containing the contents of the above configuration, wherein the paper container is formed by a laminate in which a paper base material layer and an interior material disposed on the entire inner surface of the paper base material layer are laminated, The window is formed by covering the hole provided in the paper base material layer and the interior material with a cover material, and the cover material is formed by extrusion sand lamination of a plurality of films without using an adhesive or an anchor agent. It is characterized by being formed of a laminated material.

  Further, the present invention is a paper container containing the contents of the above configuration, wherein the paper container is disposed on the entire inner surface of the paper base layer and the inner surface of the paper base layer, and on the entire outer surface of the paper base layer. The window material is formed by covering the hole provided in the paper base material layer with the interior material and the exterior material.

  According to the present invention, when the paper container is released from the sealed state by a pinhole or thermal adhesion peeling, the liquid level of the contents after being lowered by the atmospheric pressure is arranged in the window portion. Thereby, the liquid level fall of the content is visually recognized through a window part, and the sealing release of a paper container can be detected easily.

The perspective view which shows the paper container containing the content of 1st Embodiment of this invention. The expanded view which shows the blank board of the paper container containing the content of 1st Embodiment of this invention Sectional drawing of the blank board of the paper container with contents of 1st Embodiment of this invention The left side view of the upper part of the paper container with contents of 1st Embodiment of this invention The left side view of the upper part of the paper container with contents of the second embodiment of the present invention Sectional drawing of the blank board of the paper container containing the content of 3rd Embodiment of this invention Sectional drawing of the blank board of the paper container with contents of 4th Embodiment of this invention

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a paper container with contents according to the first embodiment. The paper container 1 containing contents is sealed and packaged with liquid contents 2 such as food (drinks, seasonings, etc.), pharmaceuticals, quasi-drugs, cosmetics, hygiene goods (shampoo, rinse, etc.).

  The paper container 3 is formed by bending a blank plate 10 (see FIG. 2) into a gobel top box shape, and a trunk portion 6 is provided below the inclined roof portion 5. A resin molded product pouring tool 4 having a cylindrical portion (not shown) and a cap 4 a is attached to the inclined roof portion 5. The tube portion is thermally bonded to the inclined roof portion 5 to form a spout, and the cap 4a is screwed into the tube portion to seal the spout. The cap 4a is removed and the contents 2 are poured out from the paper container 3.

  A window portion 8 extending from the upper portion to the lower portion of the paper container 3 is formed on one surface of the trunk portion 6. The remaining amount of the contents 2 in the paper container 3 can be visually recognized through the window 8. In the figure, the window portion 8 is provided on the left side when the pouring tool 4 is viewed from the front, but may be provided on the right side, the back surface, or the front surface.

  FIG. 2 shows a development view of the blank plate 10 forming the paper container 3. In the blank plate 10, a plurality of rectangular side plates 12 a, 12 b, 12 c, and 12 d that form the body portion 6 (see FIG. 1) are juxtaposed in one direction via the crease 11. The window portion 8 is provided on the one side plate 12b.

  Inclined roof portion forming plates 13 a, 13 b, 13 c, and 13 d that form the inclined roof portion 5 are provided above the side plates 12 a to 12 d through the folds 11. In the inclined roof portion forming plates 13a to 13d, a fold line 11 that is bent so as to seal the upper portion of the trunk portion 6 is provided at a predetermined position. One inclined roof portion forming plate 13c is provided with a through hole 7 for attaching a cylindrical portion (not shown) of the pouring tool 4 (see FIG. 1).

  Below the side plates 12a to 12d, bottom plates 14a, 14b, 14c, and 14d that respectively form the bottom surface of the paper container 3 are provided via the fold line 11. In the bottom plates 14a to 14d, a fold line 11 that is bent so as to seal the lower portion of the body portion 6 is provided at a predetermined position.

  In addition, paste margins 15 are provided on the sides of the inclined roof portion forming plate 13d, the side plate 12d, and the bottom plate 14d. The box-shaped paper container 3 is formed by bending the blank plate 10 at each crease 11 and thermally bonding predetermined positions of the adhesive margin piece 15, the side plates 12a to 12d, and the bottom plates 14a to 14d.

  FIG. 3 shows a cross-sectional view of the blank plate 10 on the window 8. The blank board 10 is formed of a laminate in which an interior material 30 made of a multilayer film is laminated on the entire inner surface of the paper base material layer 20 via a urethane or acrylic adhesive (not shown). The window 8 is formed by covering the hole 8 a provided in the paper base material layer 20 with the interior material 30. A polyimide-based anchor coating agent may be printed on the inner surface side of the paper base layer 20. Thereby, the adhesiveness of the paper base material layer 20 and an adhesive agent can be improved.

The paper base layer 20 is formed of double-sided polyethylene-coated paper in which coat layers 23 and 24 made of polyethylene film are disposed on both sides of the paper layer 22. The basis weight of the paper layer 22 is, for example, 250 g / m ² . The outer coat layer 23 of the paper layer 22 is formed to a thickness of 20 μm, for example, and the inner coat layer 24 is formed to a thickness of 15 μm, for example. A design such as a product name is formed on the outer surface of the paper base layer 20 by UV offset printing or the like.

  The interior material 30 is provided with a polyamide layer 31, a barrier layer 32, a polyester layer 33, and a polyethylene layer 34 in order from the outer surface side. The polyamide layer 31 is formed of, for example, a stretched nylon (ONY) film having a thickness of 15 μm. The polyamide layer 31 can increase the puncture resistance of the window portion 8.

  The polyester layer 33 is formed of, for example, a polyethylene terephthalate (PET) film having a thickness of 12 μm. The barrier layer 32 is formed by vapor-depositing silica or aluminum on one surface of the polyester layer 33. The polyester layer 33 on which the barrier layer 32 is formed is bonded to the polyamide layer 31 with an adhesive (not shown). The polyester layer 33 can enhance the fragrance retention and taste retention of the contents 2. Moreover, the gas barrier property can be enhanced by the barrier layer 32, and oxygen and water vapor can be prevented from entering the paper container 3.

  The polyethylene layer 34 is formed of, for example, a polyethylene film having a thickness of 60 μm, and is laminated on the polyester layer 33 by an adhesive or extrusion lamination. When the blank plate 10 is bent to form the paper container 3, the polyethylene layer 34 is thermally bonded to the opposing polyethylene layer 34 or the coating layer 23 of the paper base material layer 20. Therefore, the coat layer 23 and the polyethylene layer 34 form a heat bonding layer.

  The content-containing paper container 1 having the above configuration is attached to a paper container 3 formed in a box shape having an upper surface opened by bending a blank plate 10 with a cap 4a attached to a cylindrical portion (not shown) of the extraction tool 4. . Next, after the contents 2 are filled in the paper container 3, the paper container 3 is sealed by thermally bonding the upper surface. At this time, the liquid contents 2 are sterilized by heating and filled in the paper container 3, and after sealing, the inside of the paper container 3 is decompressed by natural cooling. That is, the contents-containing paper container 1 seals and wraps the contents 2 with the paper container 3 in a reduced pressure state, and distributes it as a product.

  Even in the case of the contents 2 that cannot be heated, a reduced pressure state in the paper container 3 is realized by the heat at the time of heat bonding.

  FIG. 4 shows a left side view of the upper part including the window 8 of the paper container 1 with contents. The content-containing paper container 1 is sealed and the liquid level H1 of the content 2 is arranged above the upper end of the window 8.

  The content-filled paper container 1 is internally provided when peeling of the heat-adhesive layer (coat layer 23, polyethylene layer 34) or pinholes in the heat-bonded portion of the pouring tool 4 occurs during the distribution process, or when heat-bonding after filling the contents. A pinhole may occur in the material 30. In addition, it may be detected that a puncture hole has been formed in the paper container 3 by a needle or the like, or that a foreign substance has been mixed in the paper container 3 by a syringe or the like.

  In these cases, when the sealed state of the paper container 3 is released, the liquid level H <b> 1 of the contents 2 is lowered by the atmospheric pressure, and the liquid level H <b> 2 after being lowered is arranged in the window portion 8. A product provider or purchaser can visually recognize the liquid level H <b> 2 through the window 8 and detect the release of the sealing of the paper container 3.

  Thereby, collection | recovery and use stop of the paper container 1 with a content in which there exists a possibility of a quality change of a content 2 and a foreign material mixing can be performed easily. Therefore, the safety of the paper container 1 with contents can be improved and the cost for collection can be reduced.

  According to the present embodiment, when the paper container 3 is released from the sealed state by a pinhole or thermal bonding peeling, the liquid level H2 after being lowered by the atmospheric pressure of the contents 2 is arranged in the window 8. The Thereby, the liquid level fall of the content 2 is visually recognized through the window part 8, and the sealing cancellation | release of the paper container 3 can be detected easily.

  Further, since the liquid level H1 of the contents 2 is arranged above the upper end of the window 8 in the sealed state of the paper container 3, it is possible to easily grasp the liquid level drop by visually recognizing the liquid level H2. Note that the liquid level H <b> 1 of the contents 2 may coincide with the upper end of the window portion 8 in a sealed state of the paper container 3.

  Moreover, since the window part 8 extends up and down and is provided from the upper part to the lower part of the paper container 3, the sealing release of the paper container 3 can be detected and the remaining amount of the contents 2 can be visually recognized. A plurality of window portions 8 may be divided and provided from the top to the bottom of the paper container 3.

  Moreover, when the content 2 consists of foodstuffs, the health hazard of the user by the eating and drinking of the modified content 2 and the content 2 in which the foreign material was mixed can be prevented.

Second Embodiment
Next, the paper container 1 with contents of the second embodiment will be described. This embodiment has the same paper container 3 and contents 2 as those of the first embodiment, and the position of the liquid level H1 of the contents 2 is different from that of the first embodiment.

  FIG. 5 shows a left side view of the upper part including the window portion 8 of the paper container 1 with contents of the present embodiment. For convenience of explanation, the same parts as those in FIG. 4 are given the same reference numerals. The paper container 1 containing contents is sealed and the liquid level H1 of the contents 2 is arranged below the upper end of the window 8. The paper container 3 is provided with a marking 9 adjacent to the window portion 8 and indicating the position of the liquid level H1. Note that the marking 9 may be provided on the window portion 8.

  When the sealed state of the paper container 3 is released, the liquid level H <b> 1 of the contents 2 is lowered by the atmospheric pressure, and the liquid level H <b> 2 after being lowered is arranged in the window portion 8. The merchandise provider or purchaser can visually recognize the liquid level H <b> 2 through the window 8 and detect the release of the sealing of the paper container 3 by comparison with the marking 9.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the marking 9 indicating the liquid level H1 disposed below the upper end of the window 8 in the sealed state of the paper container 3 is provided, the marking 9 and the liquid level H2 are compared to compare the liquid level of the contents 2 The descent can be easily grasped.

  Since the liquid levels H1 and H2 have different distances from the upper end of the window 8, the liquid level drop can be grasped even if the marking 9 is omitted. For this reason, the marking 9 may be omitted, but it is more desirable to provide the marking 9 because the liquid level H2 can be easily detected by comparison with the marking 9.

<Third Embodiment>
Next, the paper container 1 with contents of the third embodiment will be described. This embodiment has the same paper container 3 and contents 2 as in the first embodiment, and the layer configuration of the paper container 3 is different from that in the first embodiment.

  FIG. 6 shows a cross-sectional view on the window 8 of the blank plate 10 forming the paper container 3. For convenience of explanation, the same parts as those in FIG. The blank board 10 is formed of a laminate in which an interior material 30 made of a multilayer film is laminated on the entire surface of one side of the paper base material layer 20. The window portion 8 is formed by covering the inner surface side of the hole portion 8 a provided in the paper base material layer 20 and the interior material 30 with the cover material 40.

  The paper base layer 20 is formed of single-sided polyethylene-coated paper in which a coat layer 23 made of a polyethylene film is laminated on the outer surface of the paper layer 22. A design such as a product name is formed on the outer surface of the paper base layer 20 by UV offset printing or the like.

  The interior material 30 is provided with a barrier layer 32, a polyester layer 33, and a polyethylene layer 34 in order from the outer surface side. Similarly to the above, the polyester layer 33 is formed of a polyethylene terephthalate film or the like, and has fragrance retention and taste retention. The barrier layer 32 is formed by vapor-depositing silica or aluminum on one surface of the polyester layer 33, and has a gas barrier property. The polyethylene layer 34 is formed of a polyethylene film, and is adhered to the polyester layer 33 with an adhesive (not shown).

  The paper base material layer 20 and the interior material 30 are extrusion-sand-laminated by an adhesive layer 51 made of polyethylene or ethylene / methacrylic acid copolymer resin (EMAA).

  The cover material 40 is provided with a polyethylene layer 41, adhesive layers 42 and 43, a barrier layer 44, a polyester layer 45, a polyamide layer 46, and a polyester layer 47 in order from the outer surface. The polyethylene layer 41 is made of a polyethylene film and is thermally bonded to the polyethylene layer 34 of the interior material 30.

  The polyester layer 45, the polyamide layer 46, and the polyester layer 47 are formed of a coextruded film. The polyamide layer 42 is formed of, for example, a stretched nylon film, and improves the puncture resistance of the window portion 8. The polyester layers 45 and 47 are formed of a polyethylene terephthalate film or the like, and have fragrance retention and taste retention. The barrier layer 44 is formed by vapor-depositing silica, aluminum or the like on one surface of the polyester layer 45, and has a gas barrier property.

  The adhesive layer 42 is made of polyethylene, and the adhesive layer 43 is made of an ethylene / methacrylic acid copolymer resin. The coextruded film having the polyester layer 45, the polyamide layer 46 and the polyester layer 47 and the polyethylene layer 41 are extrusion-sand-laminated by coextrusion of the adhesive layers 42 and 43. Thereby, the cover material 40 is formed of a laminated material in which a plurality of films are laminated without using an organic solvent-based adhesive or anchor agent. Therefore, the safety of the contents 2 in contact with the peripheral surface of the cover material 40 can be improved, and delamination of the cover material 40 by the contents 2 can be prevented.

  The blank plate 10 having the above configuration is bent to form the paper container 3, and the liquid level H <b> 2 of the contents 2 and the remaining amount of the contents 2 can be visually recognized through the window portion 8.

  The polyester layer 45 may be omitted and the barrier layer 44 may be formed on the polyamide layer 46. When the thickness of the polyester layer 47 is large and the puncture resistance is high, the polyester layer 45 and the polyamide layer 46 may be omitted, and the barrier layer 44 may be formed on the polyester layer 47.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, the cover material 40 is formed by extrusion sand lamination of a plurality of films (41, 45, 46, 47) without using an adhesive or an anchor agent. Thereby, the safety of the content 2 in contact with the peripheral surface of the cover material 40 can be improved, and delamination of the cover material 40 by the content 2 can be prevented. In addition, you may use the paper container 3 of the same layer structure as this embodiment also about the paper container 1 with a content of 2nd Embodiment.

<Fourth embodiment>
Next, the paper container 1 with contents of the fourth embodiment will be described. This embodiment has the same paper container 3 and contents 2 as in the first embodiment, and the layer configuration of the paper container 3 is different from that in the first embodiment.

  FIG. 7 shows a sectional view on the window portion 8 of the blank plate 10 forming the paper container 3. For convenience of explanation, the same parts as those in FIG. The blank board 10 is formed of a laminate in which an interior material 30 made of a multilayer film is laminated on the entire inner surface of the paper base material layer 20 and an exterior material 60 is laminated on the entire outer surface. The window 8 is formed by covering the hole 8 a provided in the paper base material layer 20 with the interior material 30 and the exterior material 60.

  The paper base layer 20 is formed of single-sided polyethylene-coated paper in which a coat layer 23 made of a polyethylene film is laminated on the outer surface of the paper layer 22. A design such as a product name is formed on the outer surface of the paper base layer 20 by gravure printing or the like. The packaging material 60 is formed of a polyethylene film and is laminated on the paper base material layer 20 by extrusion lamination.

  The interior material 30 includes a barrier layer 32, a polyester layer 33, an adhesive layer 35, a polyamide layer 36, an adhesive layer 37, and a polyethylene layer 38 in order from the outer surface side. Similarly to the above, the polyester layer 33 is formed of a polyethylene terephthalate film or the like, and has fragrance retention and taste retention. The barrier layer 32 is formed by vapor-depositing silica or aluminum on one surface of the polyester layer 33, and has a gas barrier property.

  The polyamide layer 36 is formed of, for example, a stretched nylon film having a thickness of 15 μm, and increases the puncture resistance of the window portion 8. The polyethylene layer 38 is formed of, for example, a polyethylene film having a thickness of 60 μm.

  The film of the polyester layer 33 having the barrier layer 32, the film of the polyamide layer 36, and the film of the polyethylene layer 38 are extrusion-sand-laminated through adhesive layers 35 and 37 made of polyethylene or ethylene / methacrylic acid copolymer resin. The

  The paper base layer 20 and the interior material 30 are extrusion-sand-laminated by an adhesive layer 51 made of polyethylene or ethylene / methacrylic acid copolymer resin. In addition, you may join the contact bonding layer 51 and the exterior | packing material 60 through the hole 8a.

  The blank plate 10 having the above configuration is bent, and the thermal adhesive layer composed of the exterior material 60 and the polyethylene layer 38 is thermally bonded to form the paper container 3. And the liquid level H2 of the content 2 and the residual amount of the content 2 can be visually recognized through the window part 8. FIG.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, you may use the paper container 3 of the same layer structure as this embodiment also about the paper container 1 with a content of 2nd Embodiment.

  In the paper container 1 with contents of the first to fourth embodiments, a shrink pack that covers the paper container 3 with a transparent film may be provided. At this time, when it is detected that a puncture hole by a needle or the like has been formed in the paper container 3, the sealing release of the paper container 3 can be detected by visually recognizing the liquid surface H2, so that the sealed state can be inspected without removing the shrink pack. . Therefore, the cost reduction effect for collection is further increased.

  Moreover, although the paper container 1 containing the contents of the first to fourth embodiments is provided with the pouring tool 4 in the paper-belt type paper container 3, the pouring tool 4 may not be attached, and a brick type or other It may be a paper container 3 having a shape.

  According to the present invention, liquid contents such as food, pharmaceuticals, quasi-drugs, cosmetics, and hygiene products can be used in a paper container containing contents sealed and packaged by a paper container.

DESCRIPTION OF SYMBOLS 1 Paper container with contents 2 Contents 3 Paper container 4 Pouring tool 4a Cap 5 Inclined roof part 6 Trunk part 8 Window part 9 Marking 10 Blank board 11 Fold 20 Paper base material layer 22 Paper layer 23, 24 Coat layer 30 Interior material 31 , 36, 46 Polyamide layer 32, 44 Barrier layer 33, 45, 47 Polyester layer 34, 38, 41 Polyethylene layer 35, 37, 42, 43, 51 Adhesive layer 40 Cover material 60 Exterior material

Claims (5)

In a paper container containing contents in which liquid contents are sealed and packaged in a reduced pressure state with a paper container, the paper container has a window part through which the contents can be visually recognized, and the paper container is sealed from the upper end of the window part. And the liquid level of the contents after being lowered by the atmospheric pressure when the paper container is released from the sealed state, the liquid level of the contents is arranged in the window. A paper container containing the contents. The paper container with contents according to claim 1, wherein the window portion is provided from an upper part to a lower part of the paper container. The paper container is formed of a laminate in which a paper base material layer and an interior material disposed on the entire inner surface of the paper base material layer are stacked, and the window portion includes a hole provided in the paper base material layer. The paper container with contents according to claim 1 or 2 , wherein the paper container is formed by covering with the interior material. The paper container is formed by a laminate by laminating a interior material that is disposed on the entire surface of the inner surface of the paper substrate layer and the paper base layer, wherein the window portion is provided on the paper substrate layer and the interior material The cover member is formed by covering with a cover material, and the cover material is formed by a laminated material laminated by extrusion sand lamination of a plurality of films without using an adhesive or an anchor agent. The paper container containing the content of Claim 1 or Claim 2 . The paper container is formed by a laminate in which a paper base material layer, an interior material disposed on the entire inner surface of the paper base material layer, and an exterior material disposed on the entire outer surface of the paper base material layer are stacked. the contents Monoiri paper container according to claim 1 or claim 2, wherein the window portion is formed by a hole provided in the paper base layer covered by the interior material and the exterior material.

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