JP4213957B2 - Food container lid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid for a food container that is attached to an opening of a cup-shaped container containing food such as instant noodles and snacks.
[0002]
[Prior art]
For example, in a cup-shaped food container for storing instant noodles, noodles and utensils are placed in the container, and a lid is heat sealed on the upper surface around the mouth of the container and sealed. Then, when eating the contents, pick the opening tab provided on the peripheral edge of the lid, peel off the lid about half of the top of the container, pour hot water, return the lid, and then re-cap. Wait until the noodles are loosened before peeling off the entire lid.
[0003]
The lid material described above has sufficient strength so that it will not be broken when it is peeled off.However, when pouring hot water and returning the lid, the peeled part curls upward due to heat and opens, and the heat of the hot water The escape noodles will not loosen enough. Therefore, the opening tab is bent and hooked on the flange portion on the peripheral edge of the container to maintain the resealed state.
[0004]
In view of this, there has been proposed a lid material in which a notch piece is engraved on the opening tab and the notch piece is bent and locked on the lower surface of the flange portion on the periphery of the container (see, for example, Patent Documents 1 to 4). .)
[0005]
In addition, a lid material has been proposed in which an arch-shaped portion is provided on the outside of the opening tab (lifting portion), and the opening tab is temporarily fixed by bending the arch-shaped portion upward (Patent Document 5). reference.).
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. 56-10064 [Patent Document 2]
Japanese Utility Model Publication No. 59-46868 [Patent Document 3]
Japanese Utility Model Publication No. 61-3266 [Patent Document 4]
Japanese Utility Model Publication No. 61-17070 [Patent Document 5]
Japanese Utility Model Publication No. 5-72782
[Problems to be solved by the invention]
However, even in the locking method in which the notch pieces are bent as described in Patent Documents 1 to 4, it is difficult to securely hold the resealed state, particularly when the lid member is rigid, the flange portion There was a problem that the cut piece easily detached from the lower surface.
[0008]
Moreover, in the locking method as described in Patent Document 5, when reclosing, it is necessary to return the opening tab (lifted portion) to the original position and bend the arch-shaped portion upward while pressing the opening tab. There is a problem that operability is poor because reclosing must be performed with both hands. In addition, since an arch-shaped portion is further formed outside the opening tab (lifting portion), the bulging portion composed of the opening tab and the arch-shaped portion greatly protrudes to the outside of the container. In the case of shrink wrapping the container to which the material is adhered, there is also a problem that the bulging portion becomes resistance and the shrink film is easily broken.
[0009]
In view of the above-described problems, the present invention can reliably reclose the opening tab regardless of whether the lid member is rigid or not, and can minimize the portion protruding to the outside of the container. An object of the present invention is to provide a lid for food containers.
[0010]
[Means for Solving the Problems]
The present invention, which has been made to achieve the above object, is a lid for a food container, which is adhered to the upper surface of the container mouth part to cover the container mouth part and is provided with a tab for opening at the peripheral part. By inserting cut lines on both side edges of the tab, a locking tab partially protruding from the container mouth and straddling the upper surface of the container mouth is formed, and the cut line is formed on the opening tab. When approaching so as to narrow the gap between the peripheral edges of both sides, the opening tab is separated again, the upper end of the container mouth is the end point, the opening tab is pulled up, the opening tab is opened, and then the opening tab is closed again. The leading end of the opening is bent downward from the upper surface of the container mouth, so that the leading end of the opening tab is locked to the locking tab.
In addition, a perforation line is provided at a folding position of the tip end portion of the opening tab.
[0011]
According to the lid for food containers of the present invention, since the opening tab tip is locked to the locking tabs formed on both sides thereof, even if it is a rigid lid, Can be reclosed. Moreover, it can be reclosed simply by bending the opening tab end downward, and it can be reclosed very easily and easily with one hand. Furthermore, since the locking tab is formed not on the outside of the opening tab but on the side, the protruding length from the container can be minimized, and the shrink film can be broken even when the container is shrink-wrapped. Problems can be avoided easily.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, exemplary embodiments of the present invention will be described, but the present invention is not limited to such exemplary embodiments, and design changes can be appropriately made within the scope of the gist of the present invention.
[0013]
The lid of the present invention is affixed to a cup-shaped container containing food such as instant noodles and snacks, and the material thereof is not particularly limited and has been conventionally used as a lid for food containers. Can be used. Specifically, for example, when used as a lid for instant noodle containers such as cup ramen, resin film / polyethylene layer / base material (paper or paper + aluminum foil) / polyethylene layer / sealant layer, or A laminated material composed of resin film / polyethylene layer / base material (paper or paper + aluminum foil) / polyethylene layer / resin film / sealant layer is generally used. Each of these layers will be briefly described.
[0014]
The resin film prevents the property of the base material (paper) from being easily curled and enhances easy opening, and a polyester film, a nylon film, a polypropylene film, and the like are preferable.
[0015]
As the base material, for example, pure white roll paper in the range of 70 to 150 g / m ² , high quality paper, kraft paper or the like, or a laminate of paper and aluminum foil is suitable. The aluminum foil imparts plastic deformability to the lid material in addition to the oxygen barrier property, and is preferably 7 μm or more. In addition, when applying to the food container which performs the content inspection by a metal detector after closing, aluminum foil is not used.
[0016]
The polyethylene layer is an adhesive layer between the substrate and the resin film.
[0017]
For the sealant layer, for example, ethylene vinyl acetate, ethylene ethyl acrylate, or the like can be used in addition to the hot-melt adhesive having a low temperature sealing property.
[0018]
A cup container lid material containing instant noodles as one embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view of the lid member of this example, and FIG. 2 is a perspective view showing a state where the lid member of FIG. 1 is bonded to the upper surface of the container mouth portion. FIG. 3 is a side view showing a state where the lid member is re-sealed after being opened.
[0019]
In these drawings, 1 is a lid member, 10 is a tab for opening, 11 is a tip portion of the tab for opening, 12 is a cutting line, 13 is a tab for locking, 20 is a container, and 21 is an upper surface of the container mouth. is there.
[0020]
The lid member 1 has locking tabs 13 carved by predetermined cut lines 12 on both sides of the opening tab 10 and is attached to the upper surface 21 of the container mouth by heat sealing. In this attached state, as shown in FIGS. 1 and 2, the opening tab 10 protrudes from the side surface of the container 20.
[0021]
The starting points of the two cut lines 12 are at the peripheral edges of both sides of the opening tab 10, approached so as to narrow the distance therebetween, and then stopped on the upper surface 21 of the container mouth so as to leave again. Thus, by stopping the cut line 12 on the upper surface 21 so as not to enter the inside of the container mouth portion, the hermeticity (barrier property) as a food container is not impaired.
[0022]
The locking tabs 13 formed on both sides of the opening tab 10 by the two cut lines 12 as described above are in a form partially protruding from the container mouth. Further, the opening tab tip 11 has a wide tip, and in the case of this example, has an “arrow-shaped” form.
[0023]
When eating the noodles contained in the container, the noodles can be opened by first picking and pulling up the opening tab tip 11. At this time, as the resin film constituting the laminated material of the lid material, for example, a uniaxially stretched film (OPP film or the like) is used, and the stretch direction is matched with the tear direction, thereby tearing with good directionality. Can do.
[0024]
Next, the pulled-up portion (opened portion) is returned to its original position, and the opening tab tip 11 is bent below the upper surface 21 of the container mouth as shown in FIG. Thus, the opening tab tip 11 is locked to the locking tab 13 on both sides thereof.
[0025]
As described above, the lid member of the present invention can be reclosed simply by folding the opening tab tip portion downward, and can be reclosed very easily with good operability even with one hand. Further, by forming the locking tabs 13 on the side portions, not on the outside of the opening tabs, it is possible to minimize the protruding length from the container and to easily prevent the shrinkage of the shrink film.
[0026]
In the present invention, it is preferable to provide a perforation line (not shown) at the folding position of the tip of the opening tab. As a result, the tip of the opening tab can be easily and reliably bent at an appropriate position. The perforation line may be full cut or half cut, but is formed at such a pitch that the opening tab tip 11 is not easily caught and can function as a folding line.
[0027]
In this embodiment, the protruding length of the locking tab 13 from the container mouth (A in FIG. 1) is to lock the opening tab tip 11 so that the resealed state can be reliably held. Is preferably designed to be 1.5 mm or more and 8 mm or less, particularly preferably 2 mm or more and 5 mm or less.
[0028]
If the protruding length is too short, the locking with the opening tab tip 11 is easily released. On the other hand, if the protruding length is too long, the movable range of the opening tab tip 11 after locking becomes too large, and a gap is easily opened on both sides of the lifting portion (opening portion).
[0029]
Further, the locking length (B in FIG. 1) of the opening tab tip 11 is preferably 3 mm or more, and it is not necessary to make it longer than necessary in order to ensure that the resealed state can be maintained. About 5 mm is particularly preferable.
[0030]
When the lid material of the present invention is applied to an instant noodle cup container as in this example, a slight upward force is applied to the lid material by steam while pouring hot water and then resealing and cooking as described above. Works. For this reason, in the conventional locking method in which the cut piece is simply bent, the cut piece is likely to return to its original form, and it is difficult to maintain the resealed state.
[0031]
However, in the lid material of the present invention, once the opening tab tip 11 is bent and locked downward, even if an upward force is applied to the lid, the opening tab tip 11 is the locking tab. 13 is slightly pulled back to the container side by an amount corresponding to the protruding length of the locking tab 13 (A in FIG. 1). Specifically, the locked state is maintained as it is. The
[0032]
And after leaving for a predetermined time in a resealed state until the noodles are loosened, the lid is peeled off and opened. In addition, the lid | cover material which remained on both sides after pulling up and opening the opening tab front-end | tip part 11 can be peeled by picking up the part which protruded from the container opening part of the tab 13 for latching, and pulling up.
[0033]
4 and 5 show another embodiment of the food container lid of the present invention. FIG. 4 is a plan view of the lid member of this example, and FIG. 5 is a perspective view showing a state where the lid member of FIG. 4 is bonded to the upper surface of the container mouth portion.
[0034]
In this example, the cut line 12 is extended to the peripheral edge portion of the lid member so as to be opened over the entire width. However, the cut line 12 in this case is partially formed as a perforation (weak line) so that the locking tab 13 is not separated from the lid material from the beginning. Even in such a form, after opening over the entire width up to the opening line 14 as shown by the broken line in FIGS. 4 and 5, it can be resealed in the same manner as in the previous example.
[0035]
As described above, the food container lid material of the present invention has a gist of a configuration in which the opening tab end portions are locked to the locking tabs carved on both sides thereof. Therefore, the shapes of the opening tab tip and the locking tab can be freely changed within the scope of the present invention.
[0036]
【The invention's effect】
As described above, according to the lid for food containers of the present invention, since the configuration is such that the tip of the opening tab is locked to the locking tabs formed on both sides thereof, it is a rigid lid. However, it can be reliably closed. Moreover, it can be reclosed simply by bending the opening tab tip downward, and can be reclosed very easily and easily with one hand. Furthermore, the protrusion length from the container can be suppressed to a minimum, and the shrinkage of the shrink film can be avoided.
[0037]
Further, by providing a perforation line at the folding position of the opening tab tip, the opening tab tip can be reliably bent at an appropriate position, and reclosing can be performed extremely easily and reliably.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a food container lid according to the present invention.
2 is a perspective view showing a state in which the lid member of FIG. 1 is bonded to the upper surface of the container mouth portion. FIG.
3 is a side view showing a state where the lid member of FIG. 1 is opened again after being opened. FIG.
FIG. 4 is a plan view showing another embodiment of the food container lid of the present invention.
5 is a perspective view showing a state in which the lid member of FIG. 4 is bonded to the upper surface of the container mouth portion. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cover material 10 Opening tab 11 Opening tab front-end | tip part 12 Cutting line 13 Locking tab 14 Opening line 20 Container 21 Upper surface of container opening

Claims (2)

In the lid for food containers formed by adhering to the upper surface of the container mouth part to cover the container mouth part and providing an opening tab on the peripheral edge part,
Engraving tabs for locking that partially protrude from the container mouth part and straddle the upper surface of the container mouth part by making cut lines on both side edges of the opening tab,
After approaching so as to narrow the gap between the peripheral edges of the opening tabs on both sides of the opening tab, the score line is again separated from the top of the container mouth,
When the lid is opened again after being lifted and opened, the tip of the opening tab is bent below the upper surface of the container mouth so that the tip of the opening tab becomes the locking tab. A lid for a food container, characterized by being configured to be locked.   The food container lid according to claim 1, wherein a perforation line is provided at a bending position of the tip of the opening tab.

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