JP5181768B2 - Packaging container - Google Patents

Description

  The present invention provides an adhesive for a lid label in which an outlet sealing material is affixed to the inner surface of an outlet of a container body, and a releasable and re-adhesive adhesive layer is provided on one surface of a lid base material layer. Regarding the packaging container with the agent layer surface attached to the outer surface of the outlet, in particular, the outlet sealing material can be peeled off from the outlet, and the lid label can be peeled back and reattached to the container body. It is related with the packaging container which can take out the contents by opening and closing the taking-out port of a container main body repeatedly by being comprised so that opening and closing is possible.

  Conventionally, for example, as a container for storing a wet tissue or the like, a label for an opening / closing lid having a pressure-sensitive adhesive layer is attached to the outlet of the container body, and the contents are taken out by repeatedly opening and closing the outlet. A packaging container is used.

  In such a packaging container, there is a sheet having a surface exposed on the contents so that the contents and the pressure-sensitive adhesive layer provided on the lid label do not contact and adhere to each other. A packaging container is known that is provided so that the exit surface is positioned on the pressure-sensitive adhesive layer side (see, for example, Patent Document 1). In addition, when a napkin-like product impregnated with a wetting agent is stocked and stored until it is marketed, water droplets on the pressure-sensitive adhesive layer of the opening / closing flap (lid for lid) adhere to the surface, resulting in airtightness due to poor adhesion of the lid label In order to prevent deterioration of the performance, in a storage container having a cover label coated with a pressure sensitive adhesive at the outlet provided on the top surface of the container, an airtight cover is provided on the upper surface of the napkin-like product impregnated with a wetting agent. -An outlet for a container on which a film is placed is known (for example, see Patent Document 2).

However, in recent years, with the diversification of products, wet tissues and the like with a large amount of chemicals such as alcohol to be impregnated have been commercialized, and in the case of these products, the techniques disclosed in Patent Documents 1 and 2 are used for lids. A weak adhesive that can be re-removed and re-adhered is used on the back of the lid label so that the label can be opened and closed repeatedly. Occasionally, a gap is sometimes formed between the lid label and the periphery of the outlet, and the alcohol component penetrates through the gap, and the lid label is rarely peeled off naturally during product storage. There's a problem.
JP 2001-270547 A Utility Model Registration No. 3080703

  Therefore, the present invention has been made to solve the above problems, and the object of the present invention is to provide a lid label provided with an adhesive layer that can be re-removed and re-adhered on the outer surface side of the outlet of the container body. It is a packaging container that can be opened and closed freely to take out the contents such as wet tissue by sticking, and by sticking the outlet sealing material on the inner side of the outlet of the container body Another object of the present invention is to provide a packaging container in which the lid label does not peel off naturally during product storage.

In order to achieve the above object, the present invention according to claim 1 is capable of re-peeling and re-adhering to one surface of a container body having a take-out port, a take-out port sealing material, and a base material layer for a lid. A lid label provided with a pressure-sensitive adhesive layer, wherein the outlet sealing material is affixed on the inner surface side of the outlet of the container body so as to cover the outlet, and the adhesive of the lid label A packaging container in which the surface of the agent layer is brought into contact with the outer surface side of the take-out port and the cover label is attached to cover the take-out port, and the cover label is attached to the container body by the adhesive layer. It is fixed and can be peeled from the container main body from one end side of the lid label, and a heat bonding part is provided on the inner surface side of the peripheral edge of the outlet of the container main body. The outlet sealing material is thermally bonded so that it can be peeled off, and the removal is made on the thermal bonding portion. It provided the coronoid like sealing portion which projects to the side, and, in the packaging container, wherein the lid label peeled is configured to be freely opened and closed so as to be re-adhered to the container body is there.

  The packaging container of the present invention comprises a container body having an outlet, an outlet sealing material, and a lid label provided with a releasable and re-adhesive adhesive layer on one surface of the lid base material layer. The sealing material for the outlet is affixed to the inner surface of the outlet of the container body so as to cover the outlet, and the adhesive layer surface of the lid label is brought into contact with the outer surface of the outlet, so that the lid label is removed. It is a packaging container that covers and sticks the mouth, and the lid label is fixed to the container body by the adhesive layer, and can be peeled from the container body from one end side of the lid label. The sealing material can be peeled from the outlet of the container body, and can be opened and closed so that the peeled lid label can be reattached to the container body. Remove the outlet sealing material exposed by peeling from the container body from the side of the container Outlet sealing member is removed by peeling from the port is taken out by pushing the inner surface side, in which an effect that the contents from the outlet of the container body easily taken out. Also, since the outlet sealing material is adhered to the container body until it is opened, the chemical contained in, for example, a wet tissue does not penetrate into the lid label side during product storage, and the lid is stored during product storage. It is possible to prevent natural labels from peeling off.

Moreover, thermal bonding portion is provided on the inner surface of the periphery of the outlet of the container main body, take-out port sealing material in the heat bonded portion is peelably heat bonding, protruding outlet side heat-bonded portion coronoid By providing the shape seal portion, the vicinity of the mouth-shaped seal portion is pushed, and the take-out port sealing material is pushed into the inner surface side of the container body, whereby the take-out port seal material can be easily peeled off and removed from the take-out port.

The above-described present invention will be described below with reference to the drawings.
1 is a perspective view showing an embodiment of a packaging container according to the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, FIG. 3 is an exploded view showing a lid portion of the packaging container according to the present invention, and FIG. FIG. 3 is an exploded view of a lid portion showing another embodiment of the packaging container according to the present invention, in which 1 is a packaging container, 2 is a container body, 3 is an outlet sealing material, 4 is a label for the lid, Is the contents, 6 is a sealing material, 7 and 7 'are lid portions, 20 is an outlet, 21 is an upper wall, 22 is a peripheral wall, 23 is a flange portion, 24 is a thermal bonding portion, 24a is a mouth-shaped seal portion, Reference numeral 30 denotes a sealing substrate layer, 31 denotes a heat-adhesive resin layer, 40 denotes a lid substrate layer, 41 denotes an adhesive layer, 42 denotes a knob, and 43 denotes a cutting blade.

  FIG. 1 is a perspective view showing an embodiment of a packaging container according to the present invention, and FIG. 2 is a sectional view taken along line XX of FIG. As shown in FIGS. 1 and 2, the packaging container 1 is configured so that the ejection port sealing material 3 covers the ejection port 20 on the inner surface side of the substantially rectangular ejection port 20 of the injection-molded synthetic resin container body 2. Is pasted. The outlet sealing material 3 has a configuration in which a heat-adhesive resin layer 31 is provided on one surface of the sealing base material layer 30, and the surface of the heat-adhesive resin layer 31 of the outlet sealing material 3 is extracted to the outlet 20. It is made to contact | abut and is stuck so that peeling is possible. A label for lid is formed by taking out the surface of the pressure-sensitive adhesive layer 41 of the lid label 4 provided with a pressure-sensitive adhesive layer 41 that can be re-removed and re-adhered on one surface of the base material layer for lid 40 and bringing it into contact with the outer surface of the outlet 20 4 is attached so as to cover the outlet 20. Further, the surface of the pressure-sensitive adhesive layer 41 may be affixed to the heat-adhesive resin layer 31 of the take-out port sealing material 3 that faces the take-out port 20. The lid label 4 has a rectangular shape and is provided with a knob 42 extending outwardly on one end side. When the knob 42 is picked and peeled from the lid label 4, the cutting blades 43, 43 serve as stoppers for preventing the lid label 4 from being completely separated from the container body 2 in the peeling direction. It is provided from both ends. In addition, the surface of the lid label 4 is printed with a picture, characters, a symbol indicating the peeling direction, and the like.

  As shown in FIG. 2, the packaging container 1 includes an upper wall 21 having a flat plate-like projecting portion provided with a window portion serving as an extraction port 20, a peripheral wall 22 provided to be connected to the periphery of the upper wall 21, An outlet sealing material 3 is affixed to the inner surface side of the outlet 20 (see FIG. 1) of the container main body 2 including the flange portion 23 provided on the free peripheral edge of the peripheral wall 22, and the lid label 4 is attached to the outer surface side. Attached to the container main body 2 or the container main body 2 and the heat-adhesive resin layer 31 of the outlet sealing material 3 by the adhesive layer 41 to cover the outlet 20 and the contents from the flange 23 side of the container main body 2 An article 5, for example, a predetermined number of wet tissues is placed, and thus the sealing material 6 is thermally bonded to the flange portion 23 of the container body 2 and sealed. 1 and 2 show the packaging container 1 manufactured in this manner in use, that is, a state where the lid label 4 is placed on the upper side.

  FIG. 3 is an exploded view showing the lid portion 7 of the packaging container 1 according to the present invention. As shown in FIG. 3, the outlet sealing material 3 has the surface of the heat-adhesive resin layer 31 in contact with the inner surface of the outlet 20 of the container body 2 and is attached so as to be peelable from the outlet 20. As will be described later, when the portion close to the periphery of the take-out port 20 is pushed into the inner surface of the container body 2, the take-out sealant 3 is peeled from the container body 2 through the knob 42 of the lid label 4 and exposed. The mouth sealant 3 can be easily removed by peeling from the outlet 20 of the container body 2, and the contents can be easily taken out from the outlet 20 of the container body 2. Further, the pressure-sensitive adhesive layer 41 is not provided on the surface facing the container main body 2 of the knob portion 42 of the lid label 4 and the surface facing the take-out port 20 or the adhesiveness of the pressure-sensitive adhesive layer 41 is invalidated. It can also be set as the structure which formed the shielding layer. The lid portion 7 refers to a portion including the outlet 20, the region including the upper wall 21 of the container body 2, the outlet sealing material 3, and the lid label 4.

  Next, each material which comprises the packaging container 1 of this invention is demonstrated. First, as a base material used for the sealing base material layer 30 of the outlet sealing material 3, a biaxially stretched plastic film such as polyethylene terephthalate, nylon, polyethylene, polypropylene, styrene, synthetic paper, or a laminate thereof. Or the laminated body etc. which combined suitably these and aluminum foil and the plastic film which gave vapor deposition can be used.

  The heat-adhesive resin layer 31 provided on one surface of the sealing substrate layer 30 is a resin such as polyethylene, ethylene / vinyl acetate copolymer, ionomer, polypropylene, acid-modified polyolefin, or an easily peelable heat-adhesive resin. (EPR) or the like is used after film or extrusion lamination. In addition, as a method for imparting easy peelability of EPR, a method of forming a multilayer structure in which a thin layer having a weak adhesive force is provided on the surface, a method of expressing easy peelability by a configuration such as blending a resin having low compatibility, etc. These known ones are appropriately employed. The resin used for the thermoadhesive resin layer 31 may be appropriately selected depending on the resin used for the container body 2. The sealing base material layer 30 and the heat-adhesive resin layer 31 are laminated by a known technique such as a dry lamination method or an extrusion lamination method to form a laminated material for the outlet sealing material 3.

  Next, as the lid base layer 40 of the lid label 4, a material having printability and mechanical strength is used, such as those used for the sealing base layer 30, paper, and the like. A laminate or the like in which paper or the like is appropriately combined can be used. Moreover, you may provide surface protection layers, such as a polypropylene film, in order to protect the printing surface provided on the base material layer 40 for lid | covers, and surface glossiness provision.

  As the pressure-sensitive adhesive layer 41 provided on one surface of the lid base material layer 40, a re-peelable and re-adhesive pressure-sensitive adhesive is used, and terpene is applied to natural rubber latex, synthetic rubber latex, acrylic resin, rubber resin, or the like. Select appropriately from conventionally used adhesives such as synthetic resins blended with tackifiers such as resin and rosin, and by well-known application methods such as gravure coating method, roll coating method, heating melt extrusion method etc. It is formed by coating.

  The container body 2 is not particularly limited as long as it is a synthetic resin that can be injection-molded. Polypropylene, polyethylene, polystyrene, ABS, polycarbonate, and the like are appropriately used.

  The take-out port sealing material 3 is placed in the molding die by placing the take-out port seal material 3 cut into a predetermined size in the process of injection-molding the container main body 2 and pasted to the take-out port 20. Is done. Alternatively, the outlet sealing material 3 may be affixed by heat-sealing with the heat-adhesive resin layer 31 surface of the outlet sealing material 3 in contact with the inner surface of the outlet 20 of the container body 2 after injection molding. It can also be set up. In addition, as for the magnitude | size of the extraction port sealing material 3, it is preferable that the overlap with the peripheral part of the extraction port 20 shall be 2-7 mm. If it exceeds 7 mm, the takeout port sealing material 3 is difficult to peel off, and if it is less than 2 mm, it is difficult to align the takeout port 20 and the takeout port sealing material 3.

  The sealing material 6 is not particularly limited as long as it has a thermal adhesive resin layer that can be thermally bonded to the container body 2 on at least one exposed surface, and has a printability and mechanical strength. For example, if the container main body 2 is made of polypropylene, it may be exemplified by a biaxially stretched polyester film / printing layer / adhesive layer / aluminum foil / adhesive layer / unstretched polypropylene film. it can.

  Next, a method for opening and closing the lid portion 7 of the packaging container 1 will be described. As shown in FIGS. 1 and 2, when the knob 42 of the lid label 4 is picked up and pulled toward the other end facing the knob 42 and peeled from the container body 2, the cutting blade 43. Peeling is stopped at this part, and the outlet sealing material 3 attached to the inner surface side of the outlet 20 is exposed. When the exposed outlet sealing material 3 is pushed into the inner surface side of the container body 2 by bringing a finger into contact with a portion of one of the sides of the substantially rectangular outlet 20 adjacent to the periphery, the outlet sealing material 3 becomes the container body. 2 and the inner surface side of the take-out opening 20 can be easily removed and the wet tissue as the contents can be easily taken out from the take-out opening 20 of the container body 2. After the required number of sheets has been taken out, the lid label 4 that has been opened is returned to its original position, and can be closed again by being adhered again to the container body 2 by the adhesive layer 41, and can be repeatedly opened and closed thereafter.

  FIG. 4 is an exploded view of the lid portion 7 ′ showing another embodiment of the packaging container according to the present invention, and shows a state as viewed from the inner surface side of the container body 2. As shown in FIG. 4, the lid portion 7 ′ showing another embodiment is provided with a thermal bonding portion 24 on the inner surface side of the outlet 20 of the container body 2 so as to surround the peripheral portion, and is taken out to the thermal bonding portion 24. The surface of the heat sealing resin layer 31 of the mouth sealing material 3 is brought into contact, and the take-out mouth sealing material 3 is thermally bonded so as to be peeled by the heat bonding portion 24. Further, a hook-like seal portion 24 a protruding toward the take-out port 20 is provided in the thermal bonding portion 24 adjacent to one side of the take-out port 20.

  The method of thermally bonding the take-out port sealing material 3 to the take-out port 20 uses a hot plate in which the take-out port seal material 3 cut to a predetermined size is placed on the take-out port 20 and the shape of the predetermined heat bonding part 24 is used. Then, heat bonding is performed by pressurizing a hot plate from the outlet sealing material 3 side. Alternatively, the thermal bonding portion 24 may be provided at the time of injection molding of the container body 2 so as to be positioned in a rib shape on the inner surface side of the outlet 20 of the container body 2. In this case, there is an effect that a special hot plate having the shape of the heat bonding portion 24 is not required.

  Next, the present invention will be described in more detail with reference to the following examples.

<Preparation of outlet sealing material>
Using a transparent polyester film (PET) having a thickness of 25 μm as a sealing base material layer, gravure printing of a symbol or the like indicating an opening position with urethane-based ink is performed on one surface, and then a polyester polyol / isocyanate-based printing surface is printed on the printed surface. Using a two-component dry laminating adhesive, a 30 μm thick single-sided corona-treated EPR film (manufactured by Tosero Chemical Co., Ltd., CMPS013C) is used to laminate the corona-treated surface by a dry lamination method. It was cured at 40 ° C. for 2 days to obtain a laminated material for the outlet sealing material. Next, the laminated material was cut, punched out to a predetermined size, and the sealing material 3 for the outlet was produced.

<Preparation of label for lid>
Next, a weak adhesive acrylic pressure-sensitive adhesive is coated on one side of a 50 μm thick milky white polyester film (WPET) on the base material layer for the lid to form a re-peelable and re-adhesive pressure-sensitive adhesive layer. Using a base material (product name: PET50 (A) MW3, manufactured by Lintec Corporation) laminated with polyethylene and bonded to the release surface of the release material that has been subjected to release treatment on the polyethylene surface, with a known label printer A predetermined print is made with the photoelectric tube mark on the WPET surface, a biaxially stretched polypropylene film having a thickness of 20 μm is laminated on the printed surface, and a predetermined shape is obtained by registering the photoelectric tube mark with a die having a predetermined cutting edge shape. A cutting blade 43 penetrating the WPET is formed at the position, and then the seal of the take-out port sealing material is aligned with the photoelectric tube mark printed on the WPET surface with a punching die having a predetermined shape. A cutting blade was applied in addition to the material, the blank portion was peeled off, and a lid label 4 with a release material as shown in FIG. 3 in a state where the release material was laminated on the pressure-sensitive adhesive layer surface of the outlet sealing material was produced.

<Production of packaging container>
Place the prepared outlet sealing material in the mold, in-mold molding using polypropylene resin as the injection molding resin, with the outer dimensions of width 100mm, length 120mm, height 50mm and the peripheral wall slightly below The container main body of the pyramid shape shown in FIG. 1 which expanded toward the upper surface, the outlet sealing material was affixed on the inner surface side of the upper outlet, and has a flange part on the lower surface was produced. Thereafter, the release material was peeled off from the outer surface side of the takeout port of the container body, and the exposed adhesive layer surface was brought into contact with the takeout port so as to be pasted, thereby producing a packaging container as shown in FIG. The dimensions of the outlet sealing material, the lid label, and the outlet of the container main body constituting the lid are as follows.
Take-out mouth dimensions: 60mm x 45mm
Outlet sealing material dimensions: 66mm x 51mm
Accordingly, the overlap of the outlet sealing material with the peripheral edge of the outlet is 3 mm.
Dimensions outside the lid label: 90 mm x 65 mm: (not including the knob)
In addition, the knob | pick part of the label for lid | covers was extended and provided 10 mm outward at the one end part of 90 mm in length.

  The same mold and injection molding resin as in Example 1 were used for injection molding to produce a container body in which the outlet sealing material was not attached to the outlet. The heat-adhesive resin layer surface of the outlet sealing material produced in Example 1 was placed in contact with the inner surface of the outlet of the container body, and a predetermined seal-shaped sealing portion as shown in FIG. 4 was provided. Using the hot plate having the shape of the thermal bonding part, the hot plate was pressurized from the sealing substrate layer surface and thermally bonded, and the outlet sealing material was stuck on the inner surface side of the outlet. In addition, the width | variety of the heat bonding part was 2 mm. Then, the lid | cover label of Example 1 was affixed similarly to Example 1, and the packaging container which has the cover part 7 'shown in FIG. 4 was produced.

  A commercially available wet tissue is enclosed in each of the packaging containers of Examples 1 and 2, and a sealing material having a structure of biaxially stretched polyester film 20 μm / adhesive layer / aluminum foil 9 μm / adhesive layer / unstretched polypropylene film 20 μm. The flange was hermetically sealed. Either the lid label side is up, the finger is picked at the knob of the lid label, and is pulled up toward the other end facing the knob, and the exposed outlet sealing material is removed from any of the outlets 20 When the finger is brought into contact with the portion adjacent to the peripheral edge of one side or the opening display mark portion and pushed into the inner surface side of the container body, the takeout port sealing material is peeled off from the takeout port of the container main body. Any of the packaging containers could be easily opened, and the wet tissue could be taken out from the take-out port.

  Further, for each packaging container of Examples 1 and 2, with the lid label side of the packaging container facing down, a chemical solution colored with a dye is injected from the flange part side of the container body on the top, and the outlet sealing material In a dipping state, the solution was allowed to stand for 30 days, and the state of penetration of the chemical solution was observed over time. None of the packaging containers had any penetration of the chemical solution. In addition, the mixture which mixed ethanol 40 weight%, water 50 weight%, humectant (ethylene glycol) 9 weight%, additive (surfactant, disinfectant, preservative, PH adjuster, fragrance refreshing agent) 1 weight% The solution was colored with methylene blue to obtain a chemical solution.

It is a perspective view which shows one Embodiment of the packaging container concerning this invention. It is the XX sectional view taken on the line of FIG. It is an exploded view which shows the cover part of the packaging container concerning this invention. It is an exploded view of the cover part which shows other embodiment of the packaging container concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging container 2 Container main body 3 Outlet sealing material 4 Label for lid 5 Contents 6 Sealing material 7, 7 'Lid part 20 Outlet 21 Upper wall 22 Peripheral wall 23 Flange part 24 Thermal bonding part 24a Mouth-shaped sealing part 30 Sealing Base material layer 31 Thermal adhesive resin layer 40 Cover base material layer 41 Adhesive layer 42 Knob part 43 Cutting blade

Claims (1)

A container body having an outlet, an outlet sealing material, and a lid label provided with a releasable and re-adhesive pressure-sensitive adhesive layer on one surface of the lid base material layer. The lid label is attached to the inner surface of the outlet of the container body so as to cover the outlet, and the lid layer is brought into contact with the outer surface side of the outlet by bringing the adhesive layer surface of the lid label into contact with the outer surface of the outlet. A packaging container pasted and covered with a mouth, wherein the lid label is fixed to the container body by the adhesive layer, and can be peeled from the container body from one end side of the lid label. A thermal bonding part is provided on the inner surface side of the peripheral edge of the outlet of the container body , and the outlet sealing material is thermally bonded in a peelable manner at the thermal bonding part, and the thermal bonding part is connected to the outlet side. It provided the coronoid like sealing portion protruding, and, of peeling Packaging container the lid label is characterized in that it is openably configured so as to be re-adhered to the container main body has.

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