JP4815978B2 - Lid with hot water hole - Google Patents

Description

  The present invention relates to a lid material with a hot water cut hole used for containers such as raw noodles with cups and instant fried noodles.

An example of the lid member with a hot water cut hole is disclosed in Patent Document 1. With reference to FIG. 1, the cover material with a hot water hole disclosed by patent document 1 is demonstrated.
The lid member with a hot water cut hole has a two-layer structure of an inner lid and an outer lid, and the inner lid is located on the back side of the lid member shown in FIG. In the lid member with a hot water cut hole, the outer periphery of the inner lid is thermally bonded to the flange portion of the cup-shaped container body to seal the container body.

When the tab of the lid member with a hot water hole that is thermally bonded to the container body is picked and peeled off, only a part of the inner lid remains on the container body side as shown in FIG. That is, the inner lid on the back side of the lid material is provided with an opening forming cut and a hot water hole forming cut as shown in FIG. 1A, and a part of the inner cover separated by these cuts is formed. As shown in FIG. 1B, it remains on the container body side.
In the inner lid portion remaining on the container body side, there is a hot water cutting hole, which is used for hot water cutting after the noodles are hot.

The inner lid and the outer lid are laminated via a release layer, and in the laminated region corresponding to the inner lid portion to be left on the container body side, the adhesive strength of the release layer is relatively weakened (that is, The inner lid and the outer lid are easy to peel off). This makes it easier for the inner lid portion to remain on the container body side when the tab is picked and the lid member is peeled off from the container body.
On the other hand, the adhesive strength of the release layer is relatively increased in the inner region of the hot water cut hole forming cut (that is, the inner lid and the outer lid are difficult to peel off). Accordingly, the circular inner lid portion located in the hot water cut hole forming cut is peeled off together with the outer lid, and as a result, a hot water cut hole is formed in the inner lid portion remaining on the container body side (FIG. 1). (B)).

JP 2001-19059 A

  As described above, in the lid member with a hot water cut hole of Patent Document 1, it is configured so that only a specific part of the inner lid remains on the container body side when the lid member is peeled off. Actually, a portion to be left on the container body side may be peeled off together with the outer lid. The cause can be considered as follows.

That is, the opening forming cut is a cut that penetrates the inner lid, but the cut is re-fused at the heat bonding portion to the flange portion of the container main body and is not a complete cut. Separation of the inner lid and the outer lid is started at the opening forming cut, but when the cut is re-fused in this way, the inner lid and the outer lid are not well separated at the cut position, As a result, the inner lid portion that should originally remain on the container body side is also peeled off together with the outer lid.
Here, if some kind of tearing force can be applied to the location that was originally the opening formation cut, it is considered that the separation between the inner lid and the outer lid becomes good. However, in the lid member with a hot water cut hole of Patent Document 1, the tab peeling direction is substantially orthogonal to the opening forming cut. That is, in FIG. 1 (a), in the region near the outer periphery of the lid (the region to be thermally bonded to the flange portion of the container body), the opening is opened in a direction crossing the peeling direction indicated by the arrow A. The formation cut is running.
For this reason, since no tearing force acts on the location of the opening forming cut, the inner lid and the outer lid are not separated at the opening forming cut, and both of them are peeled off.

  Therefore, the present invention provides a lid member with a hot water cut hole, in which separation of the inner lid and the outer lid is good when the lid member is peeled off, and the inner lid portion to be left on the container body side is reliably left on the container body side. The purpose is to provide.

The present invention has been made in order to effectively solve the above-described problems, and provides a lid member with a hot water hole having the following characteristics.
The lid member with a hot water cut hole of the present invention has a two-layer structure of an inner lid and an outer lid, and seals the container body by bonding the outer periphery of the inner lid to a flange portion around the opening of the container body. And a tab protruding outward from the flange portion.
The inner lid is formed with an opening forming cut that defines a spout by extending from the first position to the second position on the outer peripheral edge, and a hot water cut forming cut that defines the hot water cutting hole. Yes. The adhesive strength between the inner lid and the outer lid is greater than the adhesive strength in the other portions in the “residue-side portion of the inner lid surrounded by the opening forming cut, the hot water cut hole forming cut, and the outer peripheral edge of the inner lid”. It is set so as to be weak so that when the tab is picked and the lid member is peeled off from the container body, only the container-side remaining portion of the inner lid remains on the container body side.
The lid member includes a recess having a depth not exceeding the width of the flange portion on a side of the tab, and the first position is located in the recess. The opening forming cut has a peeling start cut extending from the first position toward the inside of the lid member substantially parallel to the depth direction of the concave portion in the vicinity region including the first position.

In the lid material with a hot water cut hole of the present invention having the above-described configuration, when a tab is picked and the lid material is peeled off from the container body, the force from the hand that the consumer picks the tab is provided on the side of the tab. It is transmitted to the lid material substantially parallel to the depth direction of the recessed portion. Then, since the peeling start cut portion of the opening forming cut extends in parallel to the depth direction of the concave portion toward the inside of the cover material, the force from the hand picking the tab is applied to the peeling start cut portion. Acts as a tearing force.
Therefore, even if the opening forming cut is not a complete cut, the opening forming cut is divided by the tearing force, and the outer lid and the inner lid are well separated from the portion (peeling start cut portion). As a result, the inner lid portion (container-side residual portion) to be left on the container body side reliably remains on the container body side.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 2 shows the front surface side and the back surface side of the lid member 10 with a hot water cut hole according to the first embodiment.
The lid 10 is roughly divided into a two-layer structure of an outer lid 20 and an inner lid 30. The outer lid 20 is located on the front side of FIG. 2A, and the back side of FIG. 2B. The inner lid 30 is located in the upper part.
Actually, each of the outer lid 20 and the inner lid 30 has a larger number of laminated structures. The lid member 10 is fixed to the cup-shaped container body side using a thermal adhesive layer or other adhesive provided on the surface of the inner lid 30 as will be described later.

≪How to use lid 10≫
As shown in FIG. 3, the lid member 10 seals the container main body 50 by bonding the outer periphery of the inner lid 30 to the flange portion 51 around the opening of the container main body 50 with the surface of the outer lid 20 facing upward. . The lid member 10 includes a tab 11 for picking that protrudes outward from the flange portion 51 in a state where the lid member 10 is bonded to the container body 50 side, and the consumer picks the tab member 10 from the container body 50. Peel off.
FIG. 4 shows a state in which the lid member 10 is slightly opened from the state of FIG. After pouring hot water in this state, the lid 10 is sealed again to steam the noodles, and then the lid 10 is removed (in some cases, the noodles may be steamed without resealing the lid 10). .
When the lid member 10 is removed, only a portion 30a of the inner lid 30 remains on the container body side as shown in FIG. In the present invention, the part is referred to as a “container side residual part”.
A hot water cutting hole 36 is formed in the container-side residual portion 30a. That is, the hot water cutting after the noodles are hot is performed using the hot water cutting hole 36. Thereafter, finally, the container-side residual portion 30a is also peeled off and discarded.

<< Each cut 31, 32 provided in the inner lid 30 >>
As shown in FIG. 2 (b), the inner lid 30 is formed with an opening forming cut 31 and a hot water hole forming cut 32. Each cut 31, 32 is a cut formed through the entire thickness of the inner lid 30.
The opening forming cut 31 continuously extends from the first position 31a to the second position 31b on the outer peripheral edge of the inner lid 30 (also the outer peripheral edge of the lid member 10), and the spout 35 (FIG. 5). Define the shape of
Further, each of the hot water cut hole forming cuts 32 has a circular shape, and the shape of the hot water cut hole 36 (FIG. 5) formed on the container-side remaining portion 30a after the cover material 10 is peeled off is the hot water cut hole forming cut. 32.

  In FIG. 5, the container-side remaining portion 30 a of the inner lid remaining on the container body 50 side is a region surrounded by “opening formation cut 31”, “hot-water cut hole formation cut 32”, and “inner cover outer peripheral edge” ( This is a part of the inner lid 30 and is a hatched area in FIG.

  As described above, the lid member 10 is configured by laminating the outer lid 20 and the inner lid 30. However, in the container-side residual portion 30 a of the inner lid, for example, a release layer is interposed only in this laminated portion. For example, the adhesive strength between the outer lid 20 and the inner lid 30 is weakened. Therefore, when the tab 11 is picked and the lid member 10 is peeled off, only the container-side residual portion 30a is peeled off from the outer lid 20 and remains on the container body 50 side. This peeling is started at the position of the opening forming cut 31.

≪Ingenuity to improve the start of peeling≫
In addition, since the outer periphery of the inner lid 30 is bonded to the flange portion 51 of the container body 50 using thermal bonding or an adhesive, the opening forming cut 31 is re-fused or adhesive is applied to the portion. By intrusion, it is often not a complete cut. In that case, although the start of peeling at the opening forming cut 31 may not be good, in the present invention, the following configuration is adopted in order to avoid such inconvenience.

First, the recessed part 12 is formed in the side of the tab 11 for knobs formed in the outer peripheral part of the cover material 10. FIG. FIG. 2 (c) shows an enlarged region near the tab 11 and the recess 12 in FIG. 2 (b). In addition, the arc-shaped virtual line 51a drawn with the broken line in FIG.2 (c) has shown the flange part 51 by the side of a container main body.
As can be seen from the figure, the recess 12 has a depth that does not exceed the width of the flange portion 51, and the opening forming cut 31 extends inward from the first position 30 a in the recess 12. is doing. The first position 31a is preferably at the deepest position in the recess 12, but it is not always necessary.
The opening forming cut 31 includes a region in the vicinity including the first position 31a as a “peeling start cut portion 31 ′”. The peeling start cut portion 31 ′ extends from the first position 31 a toward the inside of the lid member along the depth direction (arrow A) of the recess 12. The peeling start cut portion 31 ′ is a part of the opening forming cut 31 and, as will be described below, is directed in a specific direction so as to ensure peeling of the inner lid 30 and the outer lid 20 from the location. It is the part comprised so that it might extend.

When the tab 11 is picked and the lid member 10 is peeled off from the container body 50, the force from the hand that the consumer picks the tab 11 is substantially parallel to the depth direction of the recess 12 provided on the side of the tab 11 ( In other words, it is considered that it is transmitted to the lid member 10 (substantially parallel to the direction of arrow A in FIG. 2C). Therefore, if the direction of the opening portion of the opening forming cut 31 is set along this direction, a tearing force acts on the position of the opening forming cut 31 by the force.
As a result, even if the opening forming cut 31 is not a complete cut, the opening forming cut 31 is divided by the tearing force, and the outer lid 20 and the inner lid are separated from the portion (that is, the peeling start cut portion 31 ′). 30 is well separated. That is, the inner lid portion (container-side residual portion 30a) to be left on the container body 50 side reliably remains on the container body side.

  In the illustrated example, the peeling start cut portion 31 ′ of the opening forming cut 31 is formed in a straight line parallel to the depth direction of the recess 12 (arrow A), but is not necessarily limited to such a form. The extending direction of the peeling start cut portion 31 ′ is set to be “substantially parallel” to the depth direction so that the location of the opening forming cut 31 is divided by the tearing force acting along the depth direction. That's fine. That is, “substantially parallel” is intended to mean that the peeling start cut portion 31 ′ does not necessarily have to be linear, and may have a slight angle with respect to the arrow A direction. .

  In FIG. 2C, the peeling start cut portion 31 'extends inward of the lid member beyond the width of the flange portion represented by the imaginary line 51a. By adopting such a configuration, it is possible to reliably guide the peeling started at the peeling start cut portion 31 ′ to the lid material inward region that is not affected by thermal bonding or adhesive. However, the peeling start cut portion may extend only within the region of the flange portion.

«Second tab that can be used to finally remove the container-side residual portion 30a»
The container-side remaining portion 30a of the inner lid is left on the container body 50 side to perform hot water cutting. However, after the hot water cutting is performed, the container-side residual portion 30a is also finally removed. FIG. 6 shows a modification including a second tab 38 for picking up the container-side residual portion 30a.
FIG. 6 is a perspective view corresponding to the first embodiment of FIG. 5, and differs from the first embodiment only in that the container-side residual portion 30 a has the second tab 38. The second tab 38 protrudes outward from the flange portion 51 of the container main body 50, and the consumer can pick this and remove the container-side residual portion 30a.

  Since it is sufficient that the second tab 38 exists only in the inner lid 30, it is not always necessary to provide a protrusion having the same shape with respect to the outer lid 20. However, since the lid member 10 is usually formed by punching a laminated material, it is preferable to provide a protrusion corresponding to the outer lid 20 as well.

≪Configuration with difference in adhesive strength in “residue on container side” ≫
When eating raw noodles with cups or instant fried noodles, typically, as shown in FIGS. 3 to 5, the lid 10 is opened slightly and poured with hot water, and then the lid 10 is sealed again. The noodles are steamed, and then the lid 10 is removed to obtain the state shown in FIG.
When such a method of use is intended, the lid member 10 (the portion excluding the container-side residual portion 30a) is not inadvertently removed to the end when opening a little to the state of FIG. 4 for the first time. Thus, it is preferable to devise something. Such an example will be described with reference to the second embodiment of FIG.

FIG. 7 is a back view of the lid member 10 ′ corresponding to FIG. The difference between the lid member 10 ′ and the lid member 10 of FIG. 2 is that there is a difference in the adhesive strength between the outer lid 20 and the inner lid 30 in the region in the container-side residual portion 30a. The configuration of is the same.
As described above, in the first embodiment, a release layer is provided between the outer lid 20 and the inner lid 30 in the container-side residual portion 30a, and peeling is easier than in other portions. It was configured to be. That is, the adhesive strength between the outer lid 20 and the inner lid 30 is not actively changed in the region in the container-side residual portion 30a.

  In 2nd Embodiment of FIG. 7, the adhesive strength in the strip | belt-shaped area | region 39 shown with the broken line in the container side residual part 30a is made higher than the adhesive strength in the other area | region in the container side residual part 30a. As a result, the lid material is peeled off from the sealed state of FIG. 3, and the peeling resistance increases when the state of FIG. 4 is reached (that is, a consumer who is inadvertently trying to continue to peel off as it is, (I feel resistance), so it is a chance to stop the peeling operation. Therefore, the inconvenience of inadvertently removing the lid material to the end can be avoided with a relatively high probability.

  In addition, as a method of varying the adhesive strength, a conventionally known method may be adopted as appropriate, for example, the composition of the release layer itself may be varied, or the release layer may be made into a net to provide a difference in its effective area. That's fine.

  Further, the region where the adhesive strength is relatively increased is not limited to the illustrated example, and an appropriate region can be set.

≪Other shapes of opening formation cut and hot water cut hole formation cut≫
In the present invention, the specific shapes of the opening forming cut 31 and the hot water cutting hole forming cut 32 are not limited to those described above.
As far as the opening forming cut 31 is concerned, as long as the peeling start cut portion 31 ′, which is a part of the opening forming cut 31, satisfies the above-mentioned conditions, the other portions can be arbitrarily shaped, and the opening forming cut 31 The shape of the spout 35 (FIG. 5) is determined by the overall shape.
Also, the hot water cut hole forming cut 32 is not limited to the circular shape as shown in the figure, and a rectangle, an ellipse, an ellipse, a notch (slit) formed by a straight line or a curved line, or any other arbitrary shape is adopted. A hot water cutting hole 36 having a corresponding shape appears on the container-side residual portion 30a.

For example, FIG. 8A is a back view corresponding to FIG. 2B and shows a modification in which the shape or arrangement of the opening forming cut 131 and the hot water cut forming slit 132 is changed. FIG. 8B is an example in which the adhesive strength in the container-side residual portion is different from that in FIG. 8A in the same manner as the second embodiment of FIG. Is made higher than the adhesive strength in other regions in the container-side residual portion 130a.
Not only the modification of FIG. 8, but any other shape and arrangement can be adopted.

In the example of FIG. 8, recesses 12 a and 12 b are formed on both sides of the tab 11. That is, in addition to the same recess 12a as in the first embodiment, the same second recess 12b is formed on the opposite side. And the lid | cover material 110, the opening formation cut 131, and the hot water cut hole formation cut 132 each have a symmetrical shape.
In this example, the first position 131a, which is the starting point of the opening forming cut 131, and the second position 131b, which is the end point, are located in the recesses 12a and 12b, respectively, and both the first position 131a and the second position 131b. On the other hand, the neighboring region is a peeling start cut portion 131 ′.

  In this case, the shape and action of each peeling start cut portion 131 ′ are the same as the case of the peeling start cut portion 31 ′ in the first embodiment described with reference to FIG. The presence of such peeling start cut portions 131 ′ on both sides of the tab 11 can further ensure peeling of the inner lid 30 and the outer lid 20 from the opening forming cut 131.

Explanatory drawing explaining the conventional lid member with a hot water cut-out hole. Explanatory drawing explaining the lid | cover material with a hot water cut-out hole which concerns on 1st Embodiment of this invention. The perspective view which shows the instant food container provided with the lid | cover material with a hot-water hole of FIG. The perspective view which shows the state which opened the cover material a little from the state of FIG. The perspective view which shows the state which removed the cover material, leaving only the container side residual part from the state of FIG. The perspective view which shows the modification with respect to 1st Embodiment. The reverse view explaining the lid | cover material with a hot water cut hole which concerns on 2nd Embodiment of this invention. Explanatory drawing explaining the modification which varied the shape of an opening formation cut.

Explanation of symbols

10, 110 Lid 11 Tab for tab 12, 12a Recess 12b Second recess 20 Outer cover 30 Inner cover 30a, 130a Remaining part 31, 131 Opening cut 31a, 131a First position 31b, 131b Second position 31 ' 131 ′ Peeling start cut portions 32, 132 Hot water cut hole forming cut 35 Spout 36 Hot water cut hole 38 Second tab 39, 139 Band-shaped region 50 Container body 51 Flange

Claims (4)

It has a two-layer structure of an inner lid (30) and an outer lid (20), and the outer periphery of the inner lid is bonded to a flange portion (51) around the opening of the container main body (50) to seal the container main body. And a lid member provided with a tab (11) protruding outward from the flange portion,
The inner lid (30) has an opening forming cut (31, 131) that defines a spout extending from the first position (31a, 131a) on the outer peripheral edge to the second position (31b, 131b). And a hot water cut hole forming cut (32, 132) that defines the hot water cut hole is formed,
The adhesive strength between the inner lid (30) and the outer lid (20) is such that the inner lid is surrounded by the opening formation cuts (31, 131), the hot water cut hole formation cuts (32, 132), and the inner lid outer peripheral edge. In the side residual part (30a, 130a), it is set to be weaker than the adhesive strength in the other parts,
The lid includes a recess (12, 12a) having a depth not exceeding the width of the flange portion (51) on the side of the tab (11), and the first position in the recess (12, 12a). (31a, 131a) is located,
Opening forming cuts (31, 131) has a first position (31a, 131a) in the vicinity area including the, towards to the inner lid substantially parallel to the depth direction of the concave portion from the first position, the flange (51) having a configuration having a peeling start cut portion (31 ′, 131 ′) extending beyond the width of
When the lid is adhered to the container body (50) and the container body (50) is sealed, when the tab (11) is picked and the lid is peeled off from the container body (50),
In the region of the lid material on the side provided with the tab (11) from the opening forming cut (31, 131) and the inner region of the hot water hole forming cut (32, 132), the inner lid (30) All layers are peeled off from the container body (50) in a state where the two-layer structure of the outer lid (20) is laminated,
Only the container side residual part (30a, 130a) of the inner lid (30) remains on the container body side (50).
A second recess (12b) having a depth not exceeding the width of the flange portion (51) is formed on the side opposite to the side of the tab (11), and the second position (131b) is the first position (131b). 2 located in the recess (12b),
Said opening forming cuts (131) in its neighboring region including the second position (131b), from said second position inward lid substantially parallel to the depth direction of the second recess (12b), the The lid according to claim 1, further comprising a peeling start cut portion (131 ′) extending beyond the width of the flange portion (51) .
The container-side residual portion (30a, 130a) of the inner lid (30) is provided with a second tab (38) protruding outward from the flange portion (51). Cover material.
The adhesive strength between the inner lid (30) and the outer lid (20) in the container-side remaining portion (30a, 130a) of the inner lid (30) is at least a part (39, 139) of the container-side remaining portion. The lid material according to claim 1, wherein the lid material is higher than the adhesive strength at other positions in the container-side residual portion.

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