JP2003137283A - Container with pull-tab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide some technical issues capable of holding a sealed characteristic before use, performing a positive confirmation of presence or non-presence of an opened seal, easily performing a releasing of an opening part and conveniently closing the opening part at the midway stage of its use, and thereby provide a container having a superior safety characteristic, sanitary aspect, handleability and superior commodity characteristic. SOLUTION: A top plate of a container is provided with a substantial rectangular-shaped pull-tab piece for use in releasing an opening part by connecting one end to the top plate in a hinge-like manner and pulling-up from the extremity end of the pull-tab acting as the other end positioned near a circumferential end of the top plate. A cover film formed with a knob piece for use in pulling up the extremity end of the pull-tab is stacked up at a circumferential end through an adhering layer over an entire area of the upper surface of the top plate in such a way that the knob piece is protruded out of a position opposing against the extremity end of the pull-tab of the circumferential end edge of the top plate. The cover film is torn out along both end edges where the pull-tab pieces are positioned in parallel with each other to enable the pull-tab piece to be pulled up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pull-open type container having a spout or a spout.

[0002]

2. Description of the Related Art In Japanese Patent Laid-Open No. 7-33145, an opening serving as a drinking mouth is provided in advance on a top plate and sealed with a pull tab. When drinking, the pull tab is peeled off to open the opening. There is a description of a liquid container that is exposed and then a straw is inserted into the opening or the mouth is directly applied to the opening for drinking.

[0003]

However, in the above-mentioned conventional techniques, it is difficult to confirm the presence or absence of opening, and there is a problem that it is difficult to hold and close the opening during use. .

The present invention was devised to solve the above-mentioned problems in the prior art. It is possible to maintain the hermeticity before use, confirm the presence or absence of unsealing surely, and easily open the opening. In addition, it is a technical issue to make it possible to simply close the opening in the middle of use, and thus to provide a container excellent in safety, hygiene, handleability, and marketability. With the goal.

[0005]

[Means for Solving the Problems] Of the present invention for solving the above technical problems, the means of the invention according to claim 1 is such that a top plate is hingedly connected at one end to the circumference of the top plate. Providing a substantially rectangular pull tab piece that opens the opening by pulling up from the pull tab tip portion which is the other end located near the end portion, and a knob piece for pulling up the pull tab tip portion was formed at the peripheral end portion. Stack the cover film over the entire top surface of the top plate with an adhesive layer so that the tabs project from the position facing the pull tab tips on the peripheral edge of the top plate, and pull tab tips by the tabs. It is possible to pull up the pull tab piece by tearing the cover film along both side edges of the pull tab piece which are located in parallel to each other by the pulling operation.

According to the above configuration of the invention described in claim 1, the entire top plate is laminated with the cover film via the adhesive layer, and the pull tab piece portion is also reliably laminated with the cover film. The tightness of the object can be reliably retained.

While tearing the cover film,
Since the pull tab piece is pulled up and the opening is opened, the presence or absence of tearing of the cover film can be surely confirmed.

Since one end of the pull tab piece is hingedly connected to the top plate, the pull tab piece is returned to its original state even when the contents are still in the container, and the opening portion is simply opened. The container can be closed, and the container can be easily handled, for example, and the intrusion of dust can be prevented.

By pulling up the tab, tearing of the cover film and opening of the opening can be achieved at the same time.
Further, since the tear progresses along the side edge of the pull tab piece, the opening of the opening can be easily achieved with almost no peeling between the cover film and the top plate even in the vicinity of the side edge. The opening operation can be performed, and after the opening, the adhesive layer can be hardly exposed even in the vicinity of the opening.

According to a second aspect of the present invention, in the first aspect of the invention, the cover film to be laminated is formed of a stretched film, and the stretching direction of the cover film is aligned with the tearing direction.

According to the above configuration of the invention of claim 2, the cover film is in a state in which the molecules are oriented in the stretching direction,
Since tearing easily progresses along this orientation direction,
It is possible to easily realize linear tearing along the side edge of the pull tab piece of the cover film by the pulling operation of the knob piece, and a local portion near the cut portion causes a jagged portion. There is no phenomenon or the phenomenon that the top plate or pull tab piece and the cover film are partially peeled off, the appearance is good, and it is possible to eliminate discomfort when the contents are put on the mouth, and it is also hygienic.

Further, when pulling up the tab and pulling up the pull tab while tearing the cover film,
Since the force is applied in the stretching direction of the cover film, it is possible to prevent deformation due to the extension of the tab.

According to a third aspect of the present invention, in the first or second aspect of the invention, the width between the two side edges of the pull tab piece is formed at the base end portion of the cover film on which the tab piece is formed, in the tearing direction of the cover film. To form a pair of notches.

According to the above-mentioned structure of the third aspect of the invention, normally, in tearing the cover film, a considerable force is required to generate the first notch, and the cover film tends to be in an elongated state. Due to the notch in the tearing direction, it is possible to easily start the tearing, and because the notch is formed in accordance with the width between the side edges on both sides of the pull tab piece and in the tearing direction, the pull tab piece is formed. A straight tear along the side edge of the can be easily realized.

According to a fourth aspect of the present invention, there is provided the first aspect of the present invention.
In the invention of 2 or 3, the cover film is laminated on the top plate by in-molding.

With the above-mentioned structure according to the fourth aspect of the present invention, the cover film can be laminated at the same time as the molding step of the container by in-molding, and it is easy, strong and wrinkle-free.
Uniform adhesion can be achieved, no separate steps for lamination are required, and the manufacturing cost can be reduced.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a release agent is applied to the back surface of the tab.

According to the above configuration of the invention of claim 5, the knob piece is in a state of protruding from the peripheral edge portion of the top plate, but by applying a release agent to the back surface, the knob piece can be formed during in-mold molding. The piece can be prevented from being fused to a part of the container, and the in-mold molding can be smoothly achieved.

According to a sixth aspect of the present invention, there is provided the first aspect of the present invention.
In the invention described in 2, 3, 4 or 5, the pull tab piece is partitioned and formed in a part of the top plate by the hinge-like connecting portion and the breaking groove.

According to the structure of the sixth aspect of the present invention, in the state before use, the pull tab piece is in a state in which the entire peripheral end portion is connected to the top plate, so that the top plate is more reliably sealed. It is also possible, and the posture of the pull tab piece in the closed state is stable.

According to a seventh aspect of the present invention, there is provided the first aspect.
In the invention of 2, 3, 4, 5 or 6, a locking piece for fixing the posture of the pull tab piece in an opened state is provided on the top surface of the top plate.

With the above-described structure according to the seventh aspect of the present invention, the pulled-up pull tab piece can be fixed at a fixed position, and the pull tab piece does not interfere when drinking the contents.

The means of the invention according to claim 8 is the method according to claim 1,
In the invention of 2, 3, 4, 5, 6 or 7, the cover film is formed from a gas barrier film.

According to the above-mentioned structure of the present invention, for example, oxygen can be prevented from entering from the outside, storage stability can be obtained, and the diffusion of the scent component and the odor component inside can be ensured. Can be prevented.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment of a container with a pull tab according to the present invention, which is made of synthetic resin and is formed from a bottom portion 2, a cylindrical body portion 3 and a lid portion 4, and Both flanges, which are provided on the upper end surface and the lower end surface of the lid portion 4 in the form of outer flanges, are fused by an ultrasonic fusion method to fix the body portion 3 and the lid portion 4 in a hermetically sealed manner.

The top plate 5 of the lid 4 has a circular shape, and one end of the top plate 5 is connected to the top plate by a hinge-like connecting portion 8 at a substantially central portion thereof, and the other end of the pull tab tip portion 12 is a peripheral end of the top plate 5. A substantially rectangular pull tab piece 7 located near the portion is formed, and by pulling up the pull tab piece 7, the opening 6 can be opened, and the pull tab piece 7 in the closed state The upper surface is configured to be flush with the upper surface of the top plate 5.

Further, a pair of locking pieces 10 are provided on the upper surface of the top plate 5 for fixing the pulled up pull tab pieces 7.

The cover film 15 is formed of a stretched film and has a circular shape with the same diameter as the top plate 5, and the pull tab piece 7 is located at a position where the projecting direction of the peripheral end portion coincides with the stretching direction.
A tab 16 having the same width as that of the tab 16 is provided in a projecting manner, and holes for receiving the pair of locking pieces 10 are formed at two positions. In the direction, a pair of notches 17 are formed to match the width of the pull tab piece 7 (see FIG. 3).

The extending direction of the cover film 15 coincides with the direction of the side edge 11 of the pull tab piece 7, and the gripping piece 16 is the peripheral edge of the top plate 5, and the pull tab tip portion 12 of the pull tab piece 7 is located.
Is bonded to the entire top surface of the top plate 5 excluding the portion into which the locking piece 10 is fitted by a hot sealing method via an adhesive layer 18 laminated on the bottom surface so as to project from a position facing The sealing property of the top plate 5 is ensured.

If a notch 17 is formed at the base end of the knob 16 as in this embodiment, an unstretched film can be used satisfactorily, but it is preferable from the viewpoints of tearability and strength described below. Uses a stretched film.

From the viewpoint of easiness of tearing in one direction, it is preferable to use a uniaxially stretched film, but even with a biaxially stretched film, for example, by changing the stretching ratio in the longitudinal and lateral directions, one side may have the property of easily tearing. The object of the present invention can be sufficiently achieved by adjusting this direction to the tearing direction.

As the stretched film, for example, stretched PE
T film, stretched polyethylene film, stretched polypropylene film (OPP), stretched nylon film (O
NY) can be used, and the optimum resin and stretched state should be selected according to the purpose from the viewpoints of adhesiveness, unidirectional tearability, strength, transparency, printability, gas barrier property, appearance, etc. You can

When a gas barrier property is particularly required, high gas barrier properties such as ethylene vinyl alcohol copolymer, polyacrylonitrile, nylon MX are used.
A film made of a resin such as D or vinylidene chloride can be used, and in this case, a laminated film having a film layer made of a resin having a high gas barrier property can also be used if necessary.

Further, for example, each of the outer layer, the intermediate layer and the inner layer is a stretched film excellent in tearability in one direction,
A laminated film composed of an unstretched film having high gas barrier properties and a film having excellent adhesiveness can also be used according to the purpose.

As the adhesive layer, it is preferable to use a hot seal type, for example, low-density polyethylene, ethylene-vinyl acetate copolymer, etc. can be used, and the balance between adhesive strength and releasability, and adhesion process Select from the viewpoint according to the purpose.

Next, one usage mode of the above-mentioned container with pull tab will be described. First, the container body 1 is filled with a liquid such as a drink, and the lid portion 4 having the cover film 15 laminated thereon is fused by ultrasonic welding. In this state, the hermeticity of the entire container is secured.

When a drink or the like is to be drunk, the picking piece 16 is pulled up with fingers, but the tearing of the cover film 15 is started smoothly by the notch 17, and the pulling force is applied to the pull tab tip 12 of the pull tab piece 7. The pull tab piece 7 of the cover film 15
The tearing progresses along the side edge portion 11 of the and reaches the position of the hinge-shaped connecting portion 8.

At this time, when pulling up the pull tab piece 7,
Since the force is applied in the stretching direction of the cover film 15, it is possible to prevent the tab 16 from being deformed due to elongation.

Further, since the tear progresses along the side edge 11 of the pull tab piece 7, even in the vicinity of the side edge 11, the cover film 15 and the top plate 5 are hardly separated from each other, and the opening 6 of the opening 6 is removed. Openness can be achieved,
Further, since the stretching direction of the cover film 15 matches the direction of the side edge portion 11, the opening operation can be performed easily and surely.

Further, as described above, since there is almost no peeling even in the vicinity of the side edge, the exposure of the adhesive layer 18 can be almost eliminated even after the opening, and the cover film 1
5, a phenomenon in which a jagged portion is generated due to local stretching, and the top plate 5 or the pull tab piece 7 and the cover film 15
There is no phenomenon of partial peeling, and the appearance is good,
It is possible to eliminate the discomfort and discomfort when the contents are taken by mouth.

During use, it is convenient to fix the pull tab piece 7 with the locking piece 10 if necessary, because it does not get in the way (see FIG. 6 (b)).

The pull tab piece 7 has one end at the top plate 5.
Since it is connected in a hinge shape to, the pull tab piece 7 can be returned to the original state and the opening 6 can be easily closed even when the contents are still remaining in the container. It is easy to carry and handle, and it is possible to prevent dust and the like from entering, and it is possible to perform good handling hygienically.

At this time, if necessary, by providing a locking structure for locking the pull tab piece 7 with the opening 6 closed, the opening can be closed more reliably.

In the present embodiment, the method of laminating the cover film 5 on the top plate 5 of the molded lid portion 4 by the hot sealing method in a separate step is described, but an in-mold bonding method can also be adopted. , In this case, pick 1
It is preferable to apply a release agent to the back surface of 6 to prevent the knob 16 from being fused to another portion of the container during in-mold molding.

FIGS. 7 to 9 show a second embodiment of the container with a pull tab according to the present invention, in which a disc-shaped bottom lid 20 is ultrasonically bonded to the container body 1, and the container has a topped cylindrical shape. The top wall of the main body 1 is the top plate 5, the cover film 15 and the locking piece 1
The configuration such as 0 is substantially the same as that of the first embodiment.

Regarding the pull tab piece 7, in the first embodiment, only one side is connected to the top plate 5 by the hinge-like connecting portion 8, and the other three sides are formed with slit-like gaps with the top plate 5. In the second embodiment, however, the pull tab piece 7 is partitioned and formed in a part of the top plate 5 by the hinge-like connecting portion 8 and the breaking groove 9 with thinned thickness on three sides (FIG. 8, FIG. 9).

With such a structure, the sealing property of the top plate 5 can be ensured more reliably, and when the opening 6 is opened, the cover film 15 is removed by pulling up the tab 16. Simultaneously with tearing, the pull tab piece 7 is pulled up while tearing the break groove 9.

[0048]

Since the present invention has the above-mentioned structure, it has the following effects. The invention according to claim 1 is
The cover film is laminated on the whole area of the top plate via the adhesive layer, and the pull tab piece is also surely laminated with the cover film, so that the airtightness of the contents can be surely maintained.

While tearing the cover film,
Since the pull tab piece is pulled up and the opening is opened, the presence or absence of tearing of the cover film can be surely confirmed.

Further, by pulling up the tab, it is possible to tear the cover film and open the opening at the same time, and since the tear progresses along the side edge of the pull tab piece, the cover film is covered even near the side edge. Since opening of the opening can be achieved with almost no peeling between the film and the top plate, the opening operation can be easily performed, and the adhesive layer can be hardly exposed even after the opening.

Further, since one end of the pull tab piece is connected to the top plate in a hinge-like manner, even when the contents are still in the container, the pull tab piece is returned to the original state and simply The opening can be closed, and the container can be easily handled, for example, and dust can be prevented from entering.

According to the second aspect of the present invention, by forming the cover film to be laminated from the stretched film, linear tearing along the side edge of the pull tab piece of the cover film can be easily realized. The appearance is also good,
It is possible to eliminate the discomfort when the mouth is attached and drink the contents, and it is possible to eliminate the deformation of the knob when the pull tab is pulled up.

According to the third aspect of the present invention, tearing of the cover film is easily started by forming a pair of cuts in the base end portion of the knob piece in conformity with the widths of both side edges of the pull tab piece. Further, since the tear propagation direction is given, the straight tear along the side edge of the pull tab piece can be realized more easily.

According to the fourth aspect of the present invention, by laminating the cover film on the top plate by in-molding, it is possible to easily and firmly achieve uniform adhesion without wrinkles and the like, and It is also possible to reduce the manufacturing cost by not requiring a separate separate process for stacking.

According to a fifth aspect of the present invention, a mold release agent is applied to the back surface of the picking piece, so that at the time of in-mold molding,
It is possible to prevent the knob piece from being fused to a part of the container and smoothly achieve in-mold molding.

According to a sixth aspect of the present invention, the pull tab piece is partitioned and formed in a part of the top plate by the hinge-like connecting portion and the break groove, so that the top plate can be more surely sealed before use. It is possible to stabilize the posture of the pull tab piece in the closed state.

According to a seventh aspect of the present invention, the pull tab piece is fixed at a fixed position by providing an engaging piece for fixing the posture of the pull tab piece in the opened state on the top surface of the top plate. The pull tab piece does not get in the way when drinking the contents.

According to the eighth aspect of the present invention, by forming the cover film from the gas barrier film, it is possible to prevent oxygen from entering from the outside and obtain storage stability.
Further, it is possible to more reliably prevent the diffusion of the internal scent component and the odorous component to the outside.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an exploded first embodiment of a container with a pull tab according to the present invention.

FIG. 2 shows a first embodiment of a container with a pull tab according to the present invention,
Overall perspective view.

FIG. 3 is a plan view showing a first embodiment of the container with the pull tab of the present invention.

FIG. 4 is a vertical cross-sectional view of the lid portion taken along the line AA of FIG.

FIG. 5 is a vertical cross-sectional view of the lid portion taken along the line BB in FIG.

FIG. 6 is an overall perspective view showing a state where the pull tab piece is pulled up in the first embodiment of the container with the pull tab of the present invention.

FIG. 7 is an overall perspective view showing an exploded second embodiment of the container with a pull tab of the present invention.

8 is a vertical cross-sectional view of the vicinity of the top plate, which is shown by being cut along the line C-C in FIG. 7.

9 is a vertical cross-sectional view of the vicinity of the top plate, which is shown by being cut along the line D-D in FIG. 7.

[Explanation of symbols]

1; Container body 2; bottom 3; torso 4; Lid 5; Top plate 6; Opening 7; Pull tab piece 8 ； Hinged connection part 9; Break groove 10; Locking piece 11; Side edge 12; Pull tab tip 15; Cover film 16; picked pieces 17; notch 18; Adhesive layer 20; Bottom lid

Claims (8)

[Claims] 1. A pull tab tip portion (12) which is one end of the top plate (5) and is hingedly connected to the top plate (5) and which is the other end located near the peripheral end of the top plate (5). ) Is provided with a substantially rectangular pull tab piece (7) for opening the opening (6), and a cover (16) for pulling up the pull tab tip portion (12) is formed at the peripheral end portion. Put the film (15) on the tab (1
6) so that the top plate (5) protrudes from a position facing the pull tab tip portion (12) of the peripheral edge of the top plate (5).
Laminated over the entire upper surface of the adhesive layer (18) with the adhesive piece (1)
By pulling up the pull tab tip portion (12) by (6), tearing of the cover film (15) along both side edges (11) of the pull tab piece (7) positioned in parallel to each other, the pull tab piece ( A container with a pull tab that can be pulled up in 7). 2. The container with a pull tab according to claim 1, wherein the cover film (15) is formed from a stretched film, and the stretching direction of the cover film (15) is aligned with the tearing direction. 3. The base end of the cover film (15) on which the tab (16) is formed, in the direction of tearing the cover film (15), and in the width between the side edges (11) of the pull tab (7). A container with a pull tab according to claim 1 or 2, wherein a pair of notches (17) are formed together. 4. The container with a pull tab according to claim 1, 2 or 3, wherein the cover film (15) is laminated on the top plate (5) by in-molding. 5. A release agent is applied to the back surface of the picking piece (16),
The container with a pull tab according to claim 4. 6. The pull tab piece (7) is partitioned and formed in a part of the top plate (5) by the hinge-like connecting portion (8) and the breaking groove (9). Container with pull tab. 7. The locking tab (10) for fixing the posture of the pull tab piece (7) in an opened state is provided on the upper surface of the top plate (5). The container with a pull tab according to 5 or 6. 8. The container with a pull tab according to claim 1, 2, 3, 4, 5, 6, or 7, wherein the cover film (15) is formed of a gas barrier film.