JP3659792B2 - Opening structure of the package - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging body in which various contents such as a wet tissue are stored, and in particular, a packaging body in which a lid member that opens and closes the opening of the packaging body is repeatedly and peelably bonded via an adhesive. It relates to opening structure.
[0002]
[Prior art]
FIG. 5 is a perspective view showing a conventional package for storing a wet tissue in which a non-woven fabric or tissue paper is impregnated with a medicine or the like, and shows a state in which a lid is pulled up.
The packaging material constituting the package 1 is, for example, a laminate film (laminated film) in which a PET (polyethylene terephthalate) film, an aluminum foil, and a sealant layer are laminated in order from the surface side. The laminate film is vertically sealed on the bottom side of the package 1, and both front and rear end portions are horizontally sealed to form horizontal seal portions 1b and 1b, whereby a soft sealed package having a substantially cubic shape. A body 1 is formed. A wet tissue 3 is stacked and stored inside the package 1.
[0003]
An oval opening 1a is formed on the upper surface of the package 1, and a lid 2 covering the opening 1a can be peeled off from the periphery of the opening 1a through an adhesive layer such as a pressure sensitive adhesive. It is joined to. The lid member 2 is formed of, for example, a biaxially stretched film such as polypropylene, and an adhesive layer such as a pressure sensitive adhesive is formed on almost the entire back surface of the lid member 2.
The front end 2 a of the lid 2 is a knob that is not adhered to the surface of the package 1. The distal end portion 2a is picked and the lid material 2 is peeled off from the surface of the package body 1, the lid material 2 is pulled up to a position where the base end portion 2b is not separated from the package body 1, and the wet tissue 3 is taken out from the opening portion 1a.
[0004]
[Problems to be solved by the invention]
However, the opening structure of the package shown in FIG. 5 has the following problems.
(1) As shown in FIG. 5, the cover material 2 has the same thickness over the entire surface, and almost the entire surface of the cover material 2 is applied to the surface of the package 1 by an adhesive layer (pressure-sensitive adhesive) having the same adhesive force. Since it is bonded, it is difficult to peel the base 2b to the position where the base 2b is bonded to the package 1 when the top 2a is picked and the cover 2 is peeled off. The body 1 may be peeled off.
[0005]
(2) Since the lid member 2 is formed of a film having a certain degree of rigidity, when the lid member 2 is peeled off until the opening 1a appears as shown in FIG. The lid member 2 falls to the surface of the package 1 due to its own rigidity and elasticity, and the opening 1a is blocked. Therefore, for example, when the infant's buttocks are wiped with a wet tissue, if the hand is released from the lid member 2, the opening 1a is closed naturally, and the wet tissue 3 cannot be pulled out, which is inconvenient.
[0006]
The present invention solves the above-described conventional problems, and when the lid material is peeled off from the package body, the base end portion of the lid material remains adhered to the package body, and the entire lid material is peeled off from the package body. In addition, an object of the present invention is to provide a package opening structure that can reliably expose the opening.
[0007]
Another object of the present invention is to provide an opening structure for a package that makes it difficult for the lid material to return to the state of covering the opening when the lid material is peeled off.
[0008]
[Means for Solving the Problems]
The present invention relates to an opening structure for a packaging body in which a lid material covering the opening is attached to a packaging body in which an opening for taking out contents is formed. The lid material includes a first sheet and a second sheet. A main body portion in which the first sheet and the second sheet are laminated, and has a width that covers the opening, and is releasably adhered to the surface of the packaging body, and the lid A second sheet is extended outward from the first sheet at the base end of the material, and a reinforcing sheet is further provided at the base end of the extended portion of the second sheet with the first sheet. Reinforcing portions are formed by being laminated at intervals, and the extended portion of the second sheet that appears between the main body portion and the reinforcing portion is the surface of the package and the opening is formed. It is characterized in that it is adhered to a region that is not formed.
[0009]
In the present invention, since the thickness of the lid material changes at the boundary between the main body portion where the first sheet and the second sheet are laminated and the extended portion of the second sheet, this boundary serves as a hinge. Function. Accordingly, when the lid is lifted from the packaging body, when the main body part is peeled off from the surface of the packaging body, the peeling feel felt by the hand changes, and the extended portion of the second sheet is the packaging body. It becomes easy to stop the peeling operation of the lid material in a state where it is adhered and left on the surface. Therefore, the entire lid is not accidentally peeled off from the package. In addition, when the main body portion is peeled off from the package, only the second sheet is adhered to the package, so that the lid member remains on the side opposite to the side where the opening is formed. It becomes difficult to return to the base. Therefore, it is difficult for the lid member once peeled off to return to the direction of covering the opening.
[0010]
The sheet for the reinforcement may be assumed to be the seat of the same material as the first sheet.
[0011]
In this structure, the second sheet extending from the main body portion is reinforced with the same sheet as the first sheet, and the second sheet extending from the first sheet is attached to the package. It won't be broken or wrinkled before being glued.
[0013]
Further, in the main body portion and the reinforcing portion, the first sheet is bonded to the surface of the packaging body through the same pressure-sensitive adhesive, and the second sheet appears between the main body portion and the reinforcing portion. It is preferable that the extended portion is bonded to the surface of the package body via a pressure-sensitive adhesive having a stronger adhesive strength than the pressure-sensitive adhesive of the main body portion and the reinforcing portion.
[0014]
As described above, when the extended portion of the second sheet is adhered to the package body with a strong adhesive force, the second sheet is firmly attached to the surface of the package body when the main body portion is peeled off from the surface of the package body. Therefore, it is difficult to accidentally peel off the entire lid member.
[0015]
Moreover, the pressure sensitive adhesive which adhere | attaches the 2nd sheet | seat and the surface of a package body can be made the same as the pressure sensitive adhesive which has adhere | attached the 1st sheet | seat and the 2nd sheet | seat mutually.
[0016]
Furthermore, it is preferable that the second sheet is thinner than the first sheet, and the bending rigidity of the second sheet is smaller than the bending rigidity of the first sheet.
[0017]
If the second sheet is made soft, it is difficult for the lid member to fall in the direction of covering the opening when the main body portion is peeled off from the surface of the package.
[0018]
Moreover, it is preferable that the second sheet is overlapped on the front side of the first sheet when the side facing the package is the back side and the opposite side is the front side. However, the 1st sheet | seat may be located in the back surface side which faces a package, and the 2nd sheet | seat may be laminated | stacked on the surface side with respect to the 1st sheet | seat.
[0019]
When the second sheet is laminated on the surface side of the first sheet, the second sheet is transparent, and a printing layer is provided at the boundary between the second sheet and the first sheet. The second sheet may function as a cover for the printing layer.
[0020]
The package of the present invention may have any contents such as a wet tissue, a dry tissue, and a cosmetic puff. Further, the package is not limited to a soft one in which the contents are wrapped with a film, and may be a slightly hard or hard container.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a packaging body according to the present invention, in which (A) shows a state in which the cover material covers the opening, and (B) shows that the cover material has been peeled off and the opening has appeared. Indicates the state. FIG. 2 is a cross-sectional view showing a reference example of a lid material, (A) is a state where the lid material is adhered to the surface of the package, (B) is a state where the lid material is peeled off from the package, (C ) Shows a state where the lid member is tilted to the opposite side to the opening.
[0022]
The package 11 is made of a laminated film in which a polyethylene terephthalate (PET) film, an aluminum foil, a heat-sealable biaxially stretched polypropylene (CPP) film called a sealant, and the like are laminated in order from the surface (outside) and adhered to each other. Is formed. Alternatively, a PET film in which aluminum, silica, or alumina is vapor-deposited, and a heat-sealable film may be stacked on the inner surface.
The heat-sealable film is directed to the inner side of the package 11, and the wet tissue 15 as the contents is wrapped by the laminated film. And in the vertical seal part and the horizontal seal part 11b, 11b, the heat-sealable films on the inner surface of the laminated film are put together, pressed, heated and thermally welded.
[0023]
In the laminated film, the aluminum foil does not permeate water and oxygen and is excellent in airtightness. Therefore, when the wet tissue 15 impregnated with cosmetics or medicine is put in the package 11, these aluminum foils Can prevent drying. The surface of the aluminum foil is printed with product marks and handling instructions. The PET film is laminated on the surface of the aluminum foil in order to protect the printing on the surface of the aluminum foil.
As shown in FIG. 1B, an opening 11a for taking out the wet tissue 15 contained in the package 11 is formed on the surface of the package 11. And the cover material 12 is joined to the package 11 through the adhesion layer, such as a pressure sensitive adhesive, in the periphery of the opening part 11a so that this opening part 11a may be covered completely.
[0024]
In the packaging material (laminated film) constituting the package 11, perforated cut lines for forming the outline of the opening 11 a are formed in advance. After the package 11 is formed, the lid member 12 is bonded to the surface of the package 11 via the adhesive layer. As shown in FIG. 1B, when the lid member 12 is peeled off during use, the portion of the packaging material surrounded by the cut line is peeled off together with the lid member 12 while being adhered to the back surface of the lid member 12. Sometimes, it is separated from the package at the part of the score line, and the separated packaging material remains adhered to the back surface of the lid 12. At this time, the opening 11 a opens in the package 11.
[0025]
As shown in FIG. 2, the lid member 12 is formed by laminating a first sheet 12a and a second sheet 12b and bonding them together with a pressure sensitive adhesive 12c. The first sheet 12a is a bilayer-stretched polypropylene resin single layer structure or a multilayer structure in which a surface layer is laminated on the polypropylene resin, preferably a microvoid structure on the surface, and a printed layer is formed on the surface. Easy to use. The second sheet 12b is a polypropylene resin film or the like. The second sheet 12b may be colored, but if a transparent resin film is used, the second sheet 12b can function as a cover sheet that protects the printed layer formed on the surface of the first sheet 12a.
For example, the thickness of the first sheet 12a is 80 μm, the thickness of the second sheet 12b is 20 μm, and the second sheet 12b is thinner than the first sheet 12a. Further, the bending rigidity of the second sheet 12b is smaller than the bending rigidity of the first sheet 12a.
[0026]
As shown in FIG. 2, the lid member 12 extends so that the second sheet 12b protrudes further from the base end portion of the first sheet 12a.
The portion where the first sheet 12a and the second sheet 12b are laminated is the main body portion 12A, and the protruding portion 12B of the second sheet 12b protrudes toward the base end side. In the extended portion 12B of the second sheet 12b, the pressure sensitive adhesive 12c joining the first sheet 12a and the second sheet 12b extends with the second sheet 12b as it is, and in the extended portion 12B, the second portion The sheet 12b is bonded to the surface of the package 11 with the pressure sensitive adhesive 12c.
[0027]
The main body portion 12A in which the first sheet 12a and the second sheet 12b are laminated has an area covering the opening 11a, and most of the main body portion 12A is packaged via the pressure-sensitive adhesive 13. It is adhered to the surface of the body 11. The adhesive force of the pressure-sensitive adhesive 13 that bonds the main body portion 12A and the package 11 is weaker than the pressure-sensitive adhesive 12c that bonds the second sheet 12b in the extended portion 12B. ing.
Further, the pressure sensitive adhesive 13 is not provided at the distal end portion 12 </ b> C of the main body portion 12 </ b> A, and the distal end portion 12 </ b> C is a knob portion that is not bonded to the package 11.
[0028]
The pressure sensitive adhesives 12c and 13 are acrylic glues, polyvinyl chloride compositions containing plasticizers, graft copolymers in which a vinyl chloride monomer is graft-polymerized on an ethylene-vinyl acetate copolymer, etc. It is mainly composed of the grafter.
This package 11 is portable, and as shown in FIG. 1 (A) and FIG. 2 (A), the main body portion 12A is bonded to the surface of the package 11 via the pressure sensitive adhesive 13, The opening 11a is closed. The extended portion 12B of the second sheet 12b is also bonded to the surface of the package 11 via the pressure sensitive adhesive 12c in a region where the opening 11a is not formed.
[0029]
As shown in FIG. 1 (B), when the front end portion 12C of the lid member 12 is picked and pulled up from the surface of the packaging body 11, the main body portion 12A of the lid material 12 is peeled off from the surface of the packaging body 11, and the opening 11a is formed. Exposed. The main body portion 12A is formed by laminating a first sheet 12a and a second sheet 12b, and only the second sheet 12b is bonded to the package 11 in the extended portion 12B. If it peels to this part, the resistance with respect to peeling which the hand which is pinching the front-end | tip part 12C will feel will change. That is, since the boundary portion 12D between the main body portion 12A and the extended portion 12B has a thickness and a step, the boundary portion 12D functions as a hinge and the lid member 12 is peeled off to the boundary portion 12D. This makes it easier to stop the peeling operation.
[0030]
In particular, since the pressure-sensitive adhesive 12c that bonds the second sheet 12b in the extension portion 12B is stronger than the pressure-sensitive adhesive 13 that bonds the main body portion 12A, When the lid 12 is peeled off to the boundary portion 12D, the extended portion 12B is firmly bonded to the surface of the package 11. Therefore, when peeling to the boundary part 12D, the resistance force given to a hand becomes strong, the extension part 12B functions as a stopper, and it can prevent that the cover material 12 whole peels from the package body 11. FIG.
[0031]
Further, the second sheet 12b has a lower bending rigidity than the first sheet 12a, and the extension part 12B of only the second sheet 12b is compared to the main body part 12A composed of the first sheet 12a and the second sheet 12b. It is soft. Therefore, as shown in FIG. 2C, when the lid member 12 is completely peeled off from the package 11, the main body portion 12A easily falls to the side opposite to the opening portion 11a due to its own weight, and the opening portion 11a in a collapsed state. It becomes difficult to return to the direction. Therefore, even if the hand is released from the lid member 12 with the opening portion 11a being opened, the lid member 12 does not block the opening portion 11a. Therefore, it becomes easy to pull out the wet tissue 15 from the opening 11a.
[0032]
3 is a perspective view of the lid member 12 used in the packaging body according to the embodiment of the present invention, and FIGS. 4A and 4B show the state where the lid member 12 shown in FIG. It is sectional drawing shown.
The lid 12 is formed by laminating a first sheet 12a and a second sheet 12b, and has a wide area main body 12A covering the opening 11a and a second sheet from the base end side of the main body 12A. 12b has an extended portion 12B. Then, on the base end side of the extended portion 12B, the same sheet as the first sheet 12a is laminated on the second sheet 12b to form the reinforcing portion 12E. In other words, the lid member 12 formed of a laminate of the first sheet 12a and the second sheet 12b is such that the first sheet 12a is removed only at the extended portion 12B.
[0033]
The first sheet 12a of the main body portion 12A and the reinforcing portion 12E is adhered to the surface of the package 11 with the same pressure-sensitive adhesive 13, and only the second sheet 12b is extended from the pressure-sensitive adhesive 13 in the extended portion 12B. Also, the pressure sensitive adhesive 12c having strong adhesive force (adhesive force) is adhered to the surface of the package 11.
Also in the package using the lid member 12, the boundary portion 12D between the main body portion 12A and the extension portion 12B functions as a hinge, and the extension portion 12B functions as a stopper when peeled to the state shown in FIG. 4B. It is supposed to be.
In the lid member 12 shown in FIGS. 3 and 4, the sheet 12 a is provided at the base end portion of the extension portion 12 </ b> B and the reinforcing portion 12 </ b> E is formed. Therefore, when the lid member 12 is bonded to the package body 11, The soft extension portion 12B of the second sheet 12b alone is not broken or wrinkled, and can be easily adhered to the package 11 in a flat state.
[0034]
The first sheet 12a has a microvoid structure on the surface and can be easily printed, such as biaxially stretched polypropylene. When the printing layer is formed on the surface of the first sheet 12a, if the second sheet 12b is made transparent, the second sheet 12b functions as a cover sheet for protecting the printing layer.
In the embodiment shown in the figure, the first sheet 12a is located on the back side facing the packaging body 11, and the second sheet 12b is directed to the front side, but the second sheet 12b is The first sheet 12a may be laminated and bonded to the front surface side in the main body portion 12A and the reinforcing portion 12E.
[0035]
【The invention's effect】
As described above, in the present invention, by changing the thickness of the lid material between the main body portion and the extension portion serving as a stopper, the boundary portion between the main body portion and the extension portion functions as a stopper, and only the main body portion is used. It becomes easy to stop the peeling of the lid material at the peeled position. Moreover, it becomes difficult for the lid member to return in the direction of the opening in a state where the opening appears.
[0036]
Further, for example, the extension portion can be formed by the second sheet functioning as a cover sheet for protecting the printing layer of the main body portion, and the layer structure of the lid member can be simplified.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a packaging body according to the present invention, in which (A) shows a state in which an opening is covered with a cover material, and (B) shows a state in which the cover material is removed and an opening appears.
2 is a cross-sectional view taken along the line II-II of FIG. 1 showing a portion to which a cover material as a reference example is attached, (A) is a state where the cover material as a reference example is closed, and (B) is a cross-sectional view. The main body part is peeled off, (C) shows the main body part being tilted,
FIG. 3 is a perspective view showing a lid member attached to the packaging body according to the embodiment of the present invention;
4A and 4B are cross-sectional views showing a state where the lid shown in FIG. 3 is attached, FIG. 4A is a state where the lid is closed, and FIG. Indicate the status
FIG. 5 is a perspective view showing a conventional package,
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Package 11a Opening part 11b Horizontal seal part 12 Cover material 12a 1st sheet 12b 2nd sheet 12c Pressure sensitive adhesive 12A Main body part 12B Extension part 12C Tip part 12D Boundary part 12E Reinforcement part 13 Pressure sensitive adhesive 15 Wet tissue

Claims (7)

In the opening structure of a package in which a cover for covering the opening is attached to a package in which an opening for taking out contents is formed, the lid has a first sheet and a second sheet. And a main body portion in which the first sheet and the second sheet are laminated has an area covering the opening and is releasably adhered to the surface of the packaging body, and the base end of the lid member The second sheet is extended outward from the first sheet at a portion, and a reinforcing sheet is further spaced from the first sheet at the proximal end of the extended portion of the second sheet. A region in which the reinforcing portion is formed by being laminated, and the extended portion of the second sheet that appears between the main body portion and the reinforcing portion is the surface of the package and the opening is not formed An opening structure for a package, which is adhered to The sheet for reinforcement, the opening structure of claim 1, wherein the packaging is a sheet of the same material as the first sheet. The body portion and the reinforcing portion, the bonded through the same pressure sensitive adhesive on the surface of the package, the body portion and the extension portion appeared that between the reinforcing portion, the surface of the package, unsealing structure of the body portion and the reinforcing portion the pressure sensitive adhesive package of claim 1, wherein are bonded via a pressure-sensitive adhesive of strong adhesion than the. The pressure-sensitive adhesive that bonds the extension portion appearing between the main body portion and the reinforcing portion and the surface of the package is a pressure-sensitive adhesive that bonds the first sheet and the second sheet to each other. The opening structure for a package according to any one of claims 1 to 3, which is the same as the agent. The opening structure for a package according to any one of claims 1 to 4 , wherein the second sheet is thinner than the first sheet, and the bending rigidity of the second sheet is smaller than the bending rigidity of the first sheet. The side facing the package of the lid rear surface, when the Conversely side surface, a second sheet in any one of claims 1 to 5 is overlaid on the surface side of the first sheet Opening structure of the described package. The package opening structure according to claim 6 , wherein the second sheet is transparent, and a printing layer is provided at a boundary portion between the second sheet and the first sheet.

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