JP3916296B2 - Opening structure of the package - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging body in which a wet tissue or the like is stored, and more particularly to an opening structure for a packaging body in which a lid sheet that opens and closes an opening of the packaging body is joined via an adhesive layer.
[0002]
[Prior art]
4 (A) and 4 (B) are perspective views showing a conventional package for storing a wet tissue in which a non-woven fabric or tissue paper is impregnated with a drug or the like, and (A) is a state in which a lid sheet is closed. (B) shows a state in which the lid sheet is opened.
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 sheet 2 covering the opening 1a is detachably joined to the periphery of the opening 1a via an adhesive layer. The lid sheet 2 is formed of, for example, a laminated film in which a film such as polyethylene or polypropylene and a printed PET film or PP film are laminated. A layer of an adhesive substance is formed on almost the entire back surface of the lid sheet 2.
[0004]
In the package 1 shown in FIG. 4, the base end portion of the lid sheet 2 is the support portion 2a, the portion other than the support portion 2a is the opening / closing portion 2b, and the knob portion 2d is formed at the tip of the opening / closing portion 2b. ing. Moreover, in the boundary area | region of the support part 2a and the opening-and-closing part 2b, the notches 2c and 2c cut from the both edge parts of the cover sheet 2 are formed, and the part pinched by the notches 2c and 2c is a connection part (hinge) Part) 2e.
When the knob 2d is picked and the opening / closing part 2b is pulled, the opening / closing part 2b is peeled off from the surface of the package 1 and an opening 1a appears. At this time, the connecting part 2e sandwiched between the notches 2c and 2c is provided. By bending, the peeling force does not act greatly on the support portion 2a, and as shown in FIG. 4B, only the opening / closing portion 2b can be peeled mainly, and the lid sheet 2 is removed by the support portion 2a. It is fastened to the surface of the package 1.
[0005]
[Problems to be solved by the invention]
Since the opening 1a can be sealed with the lid sheet 2, the package 1 shown in FIG. 4 can prevent the internal wet tissue 3 from drying. Therefore, it is possible to use the packaging body 1 shown in FIG.
On the other hand, the packaging body 1 can be used as it is in a hard container made of plastic or the like in the home. In this case, the lid sheet 2 is not necessarily required in terms of preventing the wet tissue 3 from being dried because the lid is normally provided in the container so that the inside of the container can be sealed. Conversely, if the lid sheet 2 is attached, it is necessary to peel off the lid sheet 2 every time the lid of the container is opened, which is inconvenient.
[0006]
Therefore, it is necessary to remove the lid sheet 2 when putting the package 1 into the container. However, in the case shown in FIG. 4, since almost the entire surface of the support portion 2a is securely adhered to the surface of the package body 1, it is troublesome to remove the support portion 2a from the surface of the package body 1. Moreover, when the support part 2a is more firmly bonded and fixed to the surface of the package 1 than the opening / closing part 2b, it is further difficult to peel the support part 2a.
Further, it is conceivable that the lid sheet 2 is separated from the base end portion of the opening / closing part 2b by using a scissors or a knife, but this cutting operation is also troublesome.
[0007]
SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a package opening structure that can easily remove the opening / closing portion of the lid sheet when the lid sheet is unnecessary.
[0008]
It is another object of the present invention to provide an opening structure for a package that can easily cut the opening / closing part of the lid sheet and that is difficult to cut the opening / closing part when the normal opening / closing operation is repeated.
[0009]
[Means for Solving the Problems]
In the present invention, a cover sheet that covers the opening is attached to a package in which an opening for taking out the contents is formed, and the cover sheet can be repeatedly peeled through an adhesive layer around the opening. In the opening structure of the packaging body having an opening and closing part to be attached and a support part joined to the surface of the packaging body,
A pair of cuts extending obliquely so as to approach each other from the both edges extending in the opening / closing direction toward the ends on the support part side, at the boundary between the opening / closing part and the support part of the lid sheet, A separation line extending in a direction orthogonal to the opening / closing direction and separating the opening / closing portion from the support portion is formed,
The distance between the end of the separation line between the notches and is spaced, said than the separation line and starting from the said end side, it suited from said cut in said closing portion auxiliary separating lines are provided It is a feature.
[0010]
The separation lines are, for example, short cut lines penetrating the lid sheet, and are arranged at intervals, so-called perforations are formed. Alternatively, the separation line may be one in which small-diameter holes are arranged in a line at intervals. Alternatively, the separation line may be formed by partially thinning the lid sheet.
[0011]
Further, the support part and the opening / closing part of the lid sheet may be bonded to the surface of the bag body through the same adhesive layer, or the support part may be bonded more firmly than the opening / closing part. Good.
[0012]
In the above invention, when the package is used in a hard container or the like, the opening / closing part can be separated at the part of the separation line, and this operation does not necessarily require a bag or knife.
[0013]
Further, the opening structure of the package of the present invention, the cut portion surrounded by the, there is a connection portion between the support portion and the closing portion.
[0014]
In this configuration, the connecting portion becomes a stopper portion when the opening / closing portion is peeled off, and becomes a hinge portion which is an opening / closing start point of the opening / closing portion. Further, the cut may be a cut line as shown in FIG. 2 or may be a notch as shown by reference numeral 2c in FIG.
[0015]
In this connection part, a separation line is formed perpendicular to the edges on both sides in the width direction of the lid sheet, and this separation line has an angle with respect to the cut. Therefore, the peeling force when opening the opening / closing part is less likely to act as a cutting force on the separation line. Therefore, when the lid sheet is repeatedly opened and closed, it is possible to prevent unnecessary cutting at the part of the separation line.
[0016]
Furthermore, it is preferable that the separation line is formed at a position closer to the opening / closing part side than the terminal end of the notch on the support part side.
[0017]
With this configuration, when the opening / closing part is peeled off, the peeling force concentrates at the end of the incision, and the force is less likely to concentrate at the end of the separation line, and when the lid sheet is repeatedly opened and closed, the separation line is cut. It becomes difficult to prevent the lid sheet from being cut while repeatedly opening and closing the lid sheet.
[0019]
The auxiliary separation line connects the notch and the separation line, but since the auxiliary separation line extends in the direction of the opening / closing part starting from the notch, a peeling force that peels the opening / closing part acts on the auxiliary separation line. It will extend in the direction opposite to the direction, and the separation line can be prevented from being cut by repeated opening and closing of the lid sheet.
[0020]
However, when the opening / closing part of the lid sheet is separated, the slit is easily extended from the auxiliary separating line to the separating line by an operation such as twisting and pulling the opening / closing part, and the opening / closing part can be easily separated.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings.
1A and 1B are perspective views of the package of the present invention, in which FIG. 1A shows a state in which the lid sheet covers the opening, and FIG. 1B shows a state in which the lid sheet has been peeled off and the opening has appeared. 2A is a plan view of the lid sheet, FIG. 2B is an enlarged view of a part thereof, and FIG. 3 is a perspective view showing an operation for separating the lid sheet.
The package 11 is 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. Laminated sheet). Alternatively, a PET film in which aluminum, silica, or alumina is vapor-deposited and a heat-sealable film may be superimposed.
[0022]
In the laminated film, a heat sealable film such as the biaxially stretched polypropylene is directed to the inner side of the package 11, and a vertical seal and a horizontal seal that serve as a bonded portion of the package of FIGS. In the parts 11b and 11b, the heat-sealable films of the laminated film are put together, pressed and heated, and the laminated film is thermally welded.
In the laminated film, the aluminum foil does not permeate water and oxygen and is excellent in airtightness. Therefore, when the wet tissue 13 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.
[0023]
As shown in FIG. 1B, an opening 11 a for taking out the wet tissue 13 contained in the package 11 is formed on the surface of the package 11. The lid sheet 12 is adhered and bonded to the package 11 via an adhesive layer around the opening 11a so as to completely cover the opening 11a.
The cover sheet 12 is formed of, for example, a laminate film in which a film such as polyethylene or polypropylene and a PET film or PP film as a sheet to be printed are laminated, as in the conventional case. An adhesive layer of an adhesive substance is formed on the entire surface excluding the knob portion 12b on the surface (back surface) of the lid sheet 12 facing the opening 11a of the package 11. The adhesive substance is mainly composed of a graft polymer such as a polyvinyl chloride composition containing a plasticizer or a graft copolymer obtained by graft-polymerizing a vinyl chloride monomer to an ethylene-vinyl acetate copolymer.
[0024]
A perforated cut line that forms the contour of the opening 11 a is formed in advance on the packaging material that forms the package 11. After the package 11 is formed, the lid sheet 12 is bonded to the surface of the package 11 via the adhesive layer. As shown in FIG. 1B, when the lid sheet 12 is peeled off, the portion of the packaging material surrounded by the cut line is peeled off together with the lid sheet 12 while being adhered to the back surface of the lid sheet 12, Sometimes, it is separated from the package at the cut line portion, and the separated packaging material remains adhered to the back surface of the lid sheet 12. At this time, the opening 11 a opens in the package 11. In FIG. 2A, the packaging material adhered to the back surface of the lid sheet 12 is indicated by reference numeral 11c.
As shown in FIG. 2, the lid sheet 12 has a support portion 12a at the base end opposite to the portion where the knob portion 12b is provided, and includes the knob portion 12b other than the support portion 12a. The part is the opening / closing part 12c.
[0025]
At the boundary portion between the support portion 12a and the opening / closing portion 12c, cut lines 14 and 14 are formed from the edges β1 and β2 on both sides in the width direction of the lid sheet 12 toward the center of the lid sheet 12. The cut lines 14 and 14 are cut obliquely from the edge portions β1 and β2 toward the support portion 12a side of the base end portion. A portion sandwiched between the cut lines 14 and 14 is a connecting portion 12d having a narrow width. As shown in FIG. 1 (B), when the knob portion 12b is grasped with a finger and the lid sheet 12 is peeled away from the packaging body 11, the peeling force reaches the connecting portion 12d, and at this connecting portion 12d portion. Peeling is stopped. Moreover, the support part 12a is fastened in the state adhered to the surface of the package 11 via the adhesive layer.
That is, the connecting portion 12d functions as a fulcrum (hinge portion) when the opening / closing portion 12c is peeled off, and also functions as a stopper for preventing the peeling force from reaching the support portion 12a.
[0026]
As shown in FIGS. 2A and 2B, the cut line 14 is cut into a shape in which the hatched portion 14a and the curved portion 14b are continuous. The hatched portion 14a is formed at an angle α of less than 90 degrees with respect to the direction in which the peeling force F of the opening / closing portion 12c acts (direction parallel to the edges β1 and β2). Further, the cut line 14 has a curved portion 14b on the support portion 12a side, and an end (i) on the support portion 12a side of the cut line 14 has an arc shape. Therefore, when the opening / closing part 12c is peeled off, at the final point of the peeling operation, the stress acting on the lid sheet 12 by the peeling force is received at the arcuate end (i) and the stress is dispersed. Therefore, unlike the conventional example shown in FIG. 4, the stress of the lid sheet based on the peeling force does not concentrate on the end of the cut 2c. Therefore, when peeling of the opening / closing part 12c is repeated, it is possible to prevent further incision from proceeding into the lid sheet 12 from the end (i) of the incision line 14.
[0027]
A separation line 15 extending in a direction orthogonal to the edges β1 and β2 is formed between the support portion 12a and the opening / closing portion 12c in the connecting portion 12d, which is a region sandwiched between the cut lines 14 and 14. . The separation line 15 is a short cut line penetrating the lid sheet 12 on the front and back sides, and the cut line is arranged in a straight line with an interval, and has a so-called perforation shape.
The separation line 15 extends perpendicular to the edges β1 and β2 of the lid sheet 12, and the inclined portion 14a of the cut line 14 has an angle α with respect to the edges β1 and β2. Therefore, an angle θ (90 degrees−α) is formed between the inclined portion 14 a and the separation line 15. The separation line 15 is formed at a position closer to the opening / closing part 12c side by a distance B than the end (i) of the cut lines 14, 14 on the support part 12a side.
[0028]
Further, a gap δ is provided between the end (ii) on the edge β1 and β2 side of the separation line 15 and the cut line 14. Further, an auxiliary separation line 16 extending in parallel with the edges β1 and β2 is formed between the cut line 14 and the terminal end (ii) from the cut line 14 toward the opening / closing part 12c. Yes. In addition, an interval having substantially the same dimension as that of δ is provided in the width direction of the lid sheet 12 between the auxiliary separation line 16 and the end (ii) of the separation line 15.
The package 11 is portable, and the wet tissue 13 can be taken out from the opening 11a when the lid sheet 12 is peeled off when necessary. Moreover, if the cover sheet 12 is closed after taking out, the cover sheet 12 will be adhere | attached on the surface of the package body 11 in the outer peripheral part of the opening part 11a, and the inside can be sealed. In the closed state shown in FIG. 1A, since the packaging material 11c adhered to the back surface of the lid sheet 12 always faces the opening 11a, the wet tissue 13 directly contacts the adhesive layer on the back surface of the lid sheet 12. The wet tissue 13 can be kept clean.
[0029]
When taking out the wet tissue 13, as shown in FIG. 1 (B), the grip portion 12b of the lid sheet 12 is grasped with a finger and the lid sheet 12 is peeled off. If peeled off as it is, the opening / closing part 12c to the connecting part 12d are peeled off from the surface of the package 11, and the opening part 11a appears. This peeling reaches the end (i) of the cut line 14 on the support portion 12a side. At this time, the support portion 12a is adhered to and adhered to the surface of the package 11, and the connecting portion 12d is narrow and enters the support portion 12a. It remains adhered to the surface.
[0030]
When the opening / closing part 12c is strongly peeled off, the peeling is stopped at the end (i) of the incision line 14, but this end (i) has an arc shape (curved shape), and thus is generated in the lid sheet 12 by the peeling force. The stress is received at the arc portion (curved portion) at the terminal end (i), and the stress can be avoided from concentrating at the terminal end of the cut line 14. Therefore, even if the opening / closing part 12 c is repeatedly peeled off, the cut line 14 does not advance to the lid sheet 12.
Further, since the separation line 15 is formed at a position closer to the opening / closing part 12c by the distance B than the end (i) of the cut line 14, the opening / closing part 12 and the connecting part 12d are connected to the end (i). When pulled, stress concentration on the part of the separation line 15 can be avoided, and breakage is unlikely to occur between the end (ii) of the separation line 15 and the cut line 14.
[0031]
Further, when the opening / closing part 12c and the connecting part 12d are gradually peeled off and the peeling proceeds along the inclined part 14a of the cut line 14, the connecting part 12d has a cutting force in the extending direction of the inclined part 14a. Fa acts. However, since the separation line 15 has an angle θ of 0 ° or more with respect to the direction in which the cutting force Fa acts, the cutting force is not applied to the separation line 15 by the force Fa. . Further, the auxiliary separation line 16 also forms an angle α with respect to the direction of the cutting force Fa, and further, the auxiliary separation line 16 extends toward the opening / closing part 12c from the cutting line 14 as a starting point. The cut of the auxiliary separation line 16 does not proceed into the lid sheet 12 by the force Fa.
Further, since the gap δ is provided between the end (ii) of the separation line 15 and the cut line 14, even if the opening / closing portion 12c is twisted when peeled off, the end (ii) of the separation line 15 is formed. ) And the cut line 14, and between the end (ii) and the auxiliary separation line 16, the lid sheet 12 is not easily broken.
[0032]
From the above, in the normal opening / closing operation of the lid sheet 12, the lid sheet 12 is hardly cut at the part of the separation line 15.
When the package 11 is used in a hard container or the like having a hermetic lid, the base 11 of the opening / closing part 12c is grasped and twisted and cut as shown in FIG. At this time, the lid sheet 12 can be cut relatively easily at the part of the separation line 15, and the opening / closing part 12c can be easily separated from the support part 12a.
[0033]
In addition, since a gap δ is provided between the end (ii) of the separation line 15 and the cut line 14, if the distance δ is too long, it is difficult to cut the separation line 15. Therefore, it is preferable to set the interval in the range of 1 to 3 mm. If it is less than 1 mm, breakage tends to occur between the terminal end (ii) and the cut line 14 or the auxiliary separation line 16, and if it exceeds 3 mm, a large force is required when cutting the separation line 15. However, even if the interval δ is somewhat long, in the separation operation shown in FIG. 3, the cutting can proceed from the cut line 14 to the auxiliary separation line 16, and further the cutting can proceed from the auxiliary separation line 16 to the separation line 15. . That is, if the auxiliary separation line 16 is provided, the separation line 15 can be easily cut even if the interval δ is long to some extent.
The auxiliary separation line 16 may be inclined at an angle with respect to the edges β1 and β2, and the starting end of the auxiliary separation line 16 and the cut line 14 may be continuous, or both There may be a slight gap between them.
[0034]
【The invention's effect】
As described above, in the present invention, the lid sheet can be easily cut from the separation line when the package is placed in a container and stored.
[0035]
Also, if the lid sheet is peeled repeatedly without separating the lid sheet, it becomes difficult for cracks to enter the part of the separation line, and the lid sheet is separated when used with the lid sheet attached. It is possible to prevent the inconvenience of end.
[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 where an opening is covered with a lid sheet, and (B) shows a state where the lid sheet is peeled off and an opening appears.
2A is a plan view of a lid sheet, FIG. 2B is a partially enlarged view thereof,
FIG. 3 is a perspective view showing a state in which the lid sheet is cut off in the package of the present invention;
4A and 4B are perspective views showing a conventional package, in which FIG. 4A shows a state where an opening is covered with a lid sheet, and FIG. 4B shows a state where the lid sheet is peeled off and an opening appears.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Package 11a Opening part 11b Lateral seal part 12 Lid sheet 12a Support part 12b Knob part 13 Wet tissue 14 Cut line 15 Separation line 16 Auxiliary separation line

Claims (4)

A lid sheet that covers the opening is attached to a package in which an opening for taking out the contents is formed, and the lid sheet is stuck to the peripheral portion of the opening in a releasable manner through an adhesive layer. In the opening structure of the package having an opening and closing part and a support part joined to the surface of the package,
A pair of cuts extending obliquely so as to approach each other from the edges extending in the opening / closing direction toward the ends on the support portion side at the boundary between the opening / closing portion and the support portion of the lid sheet, A separation line extending in a direction orthogonal to the opening / closing direction and separating the opening / closing portion from the support portion is formed,
The distance between the end of the separation line between the notches and is spaced, said than the separation line and starting from the said end side, it suited from said cut in said closing portion auxiliary separating lines are provided Characteristic package opening structure.   The package opening structure according to claim 1, wherein a terminal end of the notch has an arc shape.   The package opening structure according to claim 1 or 2, wherein the auxiliary separation line is continuous with the cut.   The package opening structure according to claim 1 or 2, wherein the auxiliary separation line is formed with an interval from the notch.

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