JP2020040722A - Lid member - Google Patents

Abstract

To provide a lid member that seals to a flange around a container opening part, and closes the opening part, moreover, can easily and stably peel off an outer lid and an inner lid.SOLUTION: A lid member has a tab 13a projecting outside a flange of a container, and is configured by overlapping an outer lid 11 and an inner lid 13, and is provided with a notched line 13b in the inner lid, the outer lid and the inner lid are easily peeled off in a region opposite to a tip of the tab 13a with the notched line 13b interposed therebetween, a starting point 13b1 of the notched line 13b is located on the tab 13a, and the notched line 13b extends beyond a peripheral sealing line sealed by the flange.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lid member that seals to a flange around a container opening and closes the opening. The lid is formed by superposing an outer lid and an inner lid, and a cut line is provided in the inner lid, and when the lid material sealed to the container flange is peeled off, the lid is partially opened along the cut line. For example, the present invention can be applied to a container for food such as yakisoba, which is poured with hot water and hot water is supplied.

  2. Description of the Related Art Containers with lids that contain food such as fried noodles and the like and that can be used to cook food such as hot water while containing foods inside the containers are well known (see Patent Documents 1 to 3). ). In such a container, after cooking food, hot water that is no longer needed can be discharged and used as it is as tableware.

  In any of these containers, a lid material in which an outer lid and an inner lid are partially and easily laminated is used as the lid material. Then, after sealing the lid material to the flange portion of the container and sealing it, at the time of opening, the outer lid and the inner lid are peeled off at the portion sealed by the flange portion of the container, and the outer lid and the inner lid in other regions. Is removed as a unit, thereby opening the container.

Japanese Patent No. 4724978 Japanese Patent No. 6034547 Japanese Patent No. 4815978

  By the way, in this container with a lid, at the time of the opening, the separation between the outer lid and the inner lid starts from the peripheral sealing line sealed by the container flange. Since the separation between the outer lid and the inner lid starts from the peripheral sealing line on the container flange, there is a problem that the separation between the outer lid and the inner lid is unstable and difficult to separate.

  Therefore, the present invention provides a lid material that seals to a flange around a container opening to close the opening, and that can easily and stably peel off the outer lid and the inner lid. The purpose is to do.

That is, the invention according to claim 1 is a lid material that seals to a flange around the container opening to close the opening,
Having a tab protruding outside the flange, the outer lid and the inner lid are overlapped, and a cut line is provided on the inner lid, and the cut end is located on the opposite side of the tab tip. The outer lid and the inner lid are easily peeled off in the area,
A lid material characterized in that a starting point of the cut line is located on the tab, and the cut line extends beyond a peripheral sealing line sealed by the flange.

  Next, a second aspect of the present invention is the lid according to the first aspect, wherein a starting point of the cut line is located on an outline of the inner lid.

  Next, according to a third aspect of the present invention, in the lid member according to the first or second aspect, the cut line extends in a direction orthogonal to a peeling direction of the tab in the vicinity of the starting point. It is.

  Next, according to a fourth aspect of the present invention, in the vicinity of the starting point, the cut line extends in a direction intersecting at an acute angle with a peeling direction of the tab. The lid material.

  Next, the invention according to claim 5 is the lid according to any one of claims 1 to 4, wherein the end point of the cut line is located on the tab.

  Next, the invention according to claim 6 is the lid material according to claim 5, wherein an end point of the cut line is located on an outline of the inner lid.

  Next, the invention according to claim 7, wherein a release layer is provided between the outer lid and the inner lid at a position outside the score line. 4. The lid material according to 1.

  In the lid material of the present invention, since the starting point of the cut line is located on the tab protruding outside the flange, when the tab tip is picked up with a finger and pulled upward, the tab is bent from this cut line. A force is easily applied to the starting point, and the separation between the outer lid and the inner lid can be started from this starting point outside the flange, so that the separation between the two is easy and stable.

FIG. 1 is an explanatory sectional view of a lid according to a first specific example of the present invention. FIG. 2 is an explanatory plan view of the outer lid according to the first specific example of the present invention. FIG. 3 is an explanatory plan view of the inner lid according to the first specific example of the present invention. FIG. 4 is a perspective view for illustrating a method of using the lid according to the first specific example of the present invention, and illustrating a process of applying the lid to a container. FIG. 5 is a sectional view for explaining a container using the lid according to the method of using the lid according to the first specific example of the present invention. 6A and 6B show a method of using the lid material according to the first embodiment of the present invention. FIG. 6A is an explanatory perspective view of a container having a pouring opening, and FIG. It is a perspective view for explanation of the container in which the small hole was formed. FIG. 7 is an explanatory plan view of an inner lid according to a second specific example of the present invention. FIG. 8 is an explanatory plan view of an inner lid according to a third specific example of the present invention. 9A and 9B relate to a lid member of Comparative Example 1. FIG. 9A is a plan view for explaining an outer lid, and FIG. 9B is a plan view for explaining an inner lid. FIG. 10 is an explanatory plan view of the inner lid of Comparative Example 2.

  The present invention is a lid member that seals to a flange around a container opening and closes the opening. The container may be any container, but the lid material of the present invention is a container for accommodating fried noodles and the like, and is preferably applied to a container which can be cooked in this container and which can be eaten as it is as a dish. can do. For this reason, the present invention will be described below using a lid material applied to such a container as an example. FIG. 1 of the drawings is a sectional view for explaining a lid member according to a first embodiment of the present invention. FIG. 2 is a plan view for explaining an outer cover constituting the lid member, and FIG. 3 is a plan view for explaining an inner lid constituting the lid member.

  As can be seen from FIG. 1, the lid member A1 is configured by overlapping the outer lid 11 and the inner lid 13. The inner lid 13 is provided with two types of cut lines 13b and 13c at predetermined positions, and the inner lid 13 can be easily cut at this position. In addition, a separation layer 12 is partially provided between the outer lid 11 and the inner lid 13, and the outer lid 11 and the inner lid 13 can be easily separated from each other in this region. The positions of the two types of cut lines 13b and 13c and the position where the release layer 12 is provided will be described later.

  As can be seen by comparing FIGS. 2 and 3, the outer shapes of the outer lid 11 and the inner lid 13 are the same as the outer shape of the lid member A1. The lid A1 has a tab 1a that protrudes outside the seal line (peripheral seal line) when the lid A1 is sealed to the container flange, that is, outside the container flange. The portion constituting the tab 1a is denoted by reference numeral 11a in FIG. Further, in FIG. 3, reference numeral 13a is attached. These both overlap each other to form a tab 1a.

  Of the two types of cut lines 13b and 13c provided on the inner lid 13, the starting point 13b1 of one of the cut lines 13b is located on the tab 13a of the inner lid 13. Since this 13a is located outside the peripheral sealing line for sealing the container flange, the starting point 13b1 of the cut line 13b is also located outside the peripheral sealing line. In FIG. 3, 13x indicates the outer edge of the peripheral seal line, and it can be seen from this figure that the starting point 13b1 of the cut line 13b is located outside the peripheral seal line.

  The starting point 13b1 of the cut line 13b is located on the outer line 13d of the inner lid 13. Therefore, when the tab 1a is pulled, the cutting of the inner lid 13 starts from the starting point 13b1 of the cut line 13b.

  Starting from this starting point 13b1, the cut line 13b crosses and crosses the peripheral sealing line and extends toward the center of the inner lid 13. Then, the inner lid 13 is circulated so as to be approximately bisected, and returns to the position on the tab 13a again across the peripheral sealing line. The end point 13b4 is located on the tab 13a of the inner lid 13 similarly to the start point 13b1, and is located on the outer line 13d of the inner lid 13. The tip of the tab 13a is located between the start point 13b1 and the end point 13b4.

  In this example, in the vicinity 13b2 of the starting point 13b1, the cut line 13b extends in a direction perpendicular to the peeling direction X of the tab 1a. The tab 13a also extends in a direction orthogonal to the peeling direction X of the tab 1a in the vicinity 13b3 of the end point 13b4. However, the present invention is not limited to this, and the cut line 13b may extend in a direction intersecting the cutting direction X of the tab 1a at an acute angle in the vicinity 13b2, 13b3 of the start point 13b1 and the end point 13b4, or may be parallel to the separation direction X. It may be extended to. FIG. 7 is an example of the inner lid 23 in which the cutting line 23b extends in a direction intersecting the cutting direction X of the tab at an acute angle in the vicinity 23b2 of the start point 23b1 and the vicinity 23b3 of the end point 23b4, and FIG. This is an example of the inner lid 33 in which the cut line 33b extends substantially parallel to the tab peeling direction X in the vicinity 33b2 and the vicinity 33b3 of the end point 33b4.

  Of the two types of cut lines 13b and 13c, the cut line 13c is provided on the opposite side of the tab 13a across the cut line 13b. This cut line 13c is provided in the shape of a closed curve. As described later, when the lid member A1 is peeled from the container B, a portion surrounded by the cut line 13c is formed in the inner lid 13 as a hot water hole 13'c. As can be seen from FIG. 3, a plurality of cut lines 13c are provided, and therefore, a plurality of cut-off holes 13'c are formed.

  In this example, the hot water hole 13'c is formed in a circular shape, and the cut line 13c is formed in a circular shape surrounding the periphery thereof. However, the present invention is not limited to this, and the hot water hole 13'c may be formed in a straight line or a wavy line. You can also. The cut line 13c may be a closed curve that surrounds the perimeter of the hot water hole 13'c.

  Next, a region where the release layer 12 is formed will be described. For convenience of description, first, a region where the release layer 12 is not formed will be described. The region where the release layer 12 is not formed is a region where the outer lid 11 and the inner lid 13 are firmly adhered to each other and are not separated. In FIG. 3, hatching is applied to the region where the peeling layer 12 is formed, and the region where the peeling layer 12 is formed and the region where it is not formed are shown separately.

  The region where the release layer 12 is not formed is a region where the tip of the tab 13a is located with the cut line 13b as a boundary. Also, the release layer 12 is not provided in the region surrounded by the cut line 13c, that is, in the region where the hot water hole 13'c is formed, and the outer lid 11 and the inner lid 13 are firmly adhered. . The peeling layer 12 is formed in another region, that is, in a region opposite to the tip of the tab 13a with the cut line 13b as a boundary and in a region other than a region surrounded by the cut line 13c. In addition, it is also possible to arrange | position an adhesive layer in the area | region which forms the hot water hole 13'c, and to adhere | attach the outer cover 11 and the inner cover 13 firmly.

  It is not necessary that the positional accuracy between the cut line 13b and the release layer 12 forming area be accurate. The cut line 13b may overlap the release layer 12 formation region. Similarly, the cut line 13c may also overlap the release layer 12 formation region.

  This lid member A1 can be used as follows. That is, first, as shown in FIG. 4, the lid member A1 is placed on the opening B1 of the container B, and the opening B1 is closed by heat sealing to the flange B2 around the opening B1. In the drawing, B2x indicates the outer edge of the flange B2, and corresponds to the outer edge 13x of the peripheral seal line formed by heat sealing. B2y indicates the inner edge of the flange B2.

  FIG. 5 shows a cross-sectional view of the container B to which the lid member A1 is applied. As can be seen from this figure, the tab 1a protrudes outward from the outer edge B2x of the flange B2.

  Next, a method of cooking contents such as fried noodles using the container with the lid will be described.

  That is, first, the tip of the tab 1a is picked up by a finger and pulled up, so that the outer lid 11 and the inner lid 13 are integrally separated from the flange B2 of the container B. Next, when the separation reaches the start point 13b1 and the end point 13b4 of the cut line 13b, the cutting of the inner lid 13 is started by the cut line 13b. When the tip of the tab 1a is pulled upward, the tab 1a is bent at a line connecting the starting point 13b1 and the ending point 13b4 of the cut line 13b, so that the force is easily applied to the starting point 13b1 and the ending point 13b4. The separation from the inner lid 13 can be started from this 13b1 and the end point 13b4 outside the peripheral sealing line.

The cutting of the inner lid 13 is guided by the cut line 13b. Further, a peeling layer is provided between the outer lid 11 and the inner lid 13 at a peripheral sealing line located outside the cut line 13b, that is, in a region opposite to the tip of the tab 13a with the cut line 13b as a boundary. Since the inner cover 12 is formed, the outer cover 11 is separated from the inner cover 13 in this region while the inner cover 13 is left on the container flange B2. At this time, since the outer lid 11 and the inner lid 13 are integrally removed from the container B in a region surrounded by the cut line 13b, that is, in a region to which the tab 13a belongs with the cut line 13b as a boundary, The container opening B1 partially opens in this region (see FIG. 6A).

  It is desirable that the removal of the cover material A1 be stopped within the area where the cut line 13b exists. Hot water can be poured using the partially opened opening B1a as a pouring port. Then, by returning the lid member A1 and closing the partial opening (pouring port) B1a, the contents such as fried noodles can be cooked by pouring hot water.

  After the cooking for a predetermined time is completed, the lid A1 can be separated from the container B by pulling the lid A1 again and pulling the lid A1 beyond the cut line 13b. As described above, in the region outside the cut line 13b, the release layer 12 is formed between the outer lid 11 and the inner cover 13 except for the region surrounded by the cut line 13c. The outer lid 11 is peeled off and removed from the inner lid 13 while the inner lid 13 is left in the container opening B1. On the other hand, since the release layer 12 does not exist in the area surrounded by the cut line 13c and the outer lid 11 and the inner lid 13 are firmly adhered to each other, the outer lid 11 and the inner lid 13 It is removed as one. Therefore, a drain hole 13'c can be formed in the inner lid 13 remaining in the container opening B1 (see FIG. 6B). Then, by inclining the container B, the internal hot water can be discharged.

  The contents remaining in the container B in this manner can be transferred to another tableware for eating, but it is also possible to use the container B as it is for eating.

  Next, FIG. 7 is an explanatory plan view of the inner lid 23 according to a second specific example of the present invention. The inner lid 23 is an example of an inner lid in which the cut line 23b extends in a direction intersecting the cutting direction X of the tab 22a at an acute angle in the vicinity 23b2 near the start point 23b1 and the vicinity 23b3 near the end point 23b4 of the cut line 23b. When the angle at which the cut line 23b intersects the peeling direction of the tab 22a is formed at an acute angle, the cover A2 can be more easily opened. The inner lid 23 is otherwise the same as the first specific example, and the outer lid is also the same as the first specific example.

  FIG. 8 shows an example of the inner lid 33 in which the cut line 33b extends substantially parallel to the peeling direction X of the tab 3a in the vicinity 33b2 of the start point 33b1 and in the vicinity 33b3 of the end point 33b4. When the cut line 33b extends substantially in parallel with the peeling direction X of the tab 33a, the lid A3 can be more easily opened. The inner lid 33 is otherwise the same as the first specific example, and the outer lid is also the same as the first specific example.

  In the lid material of the present invention, the outer lid 11 can be made of an arbitrary sheet, but desirably contains paper to ensure heat insulation. For example, paper alone, a laminate of paper and a polyester film, and the like.

On the other hand, as the inner lids 13, 23, and 33, a laminate having a sealant layer that can be heat-sealed to the flange portion B2 of the container B can be used. Examples of the sealant layer include polyolefins such as polyethylene. As an example, if the layer configuration of the inner lids 13, 23, and 33 is shown, for example, a laminate in which a polyethylene resin, a polyester film, and a polyethylene resin are laminated in this order, a laminate in which polyethylene resin, an aluminum foil, and a polyethylene resin are laminated in this order , A polyethylene resin, a polyester film, an aluminum foil, and a laminate obtained by laminating a polyethylene resin in this order.

In addition, as the release layer 12, a silicone-based wax, a polyethylene-based wax, a polyester-based wax, a fatty acid amide-based wax, or a release agent containing these waxes can be used.

(Example 1)
This example is an example using the inner lid 13 described as the first specific example. That is, the start point 13b1 and the end point 13b4 of the cut line 13b are located on the tab 13a, and the cut line 13b extends beyond the peripheral seal line sealed by the container flange B2, and the vicinity 13a2 of the start point 13b1. In addition, the inner lid 13 in which the cut line 13b extends in a direction perpendicular to the peeling direction of the tab 1a in the vicinity 13a3 of the end point 13b4 was used.

  Note that the outer lid 11 was made of a single piece of paper, and the inner lid 13 was made of a laminate in which polyethylene, a polyester film, and polyethylene were laminated in this order.

(Example 2)
This example is an example using the inner lid 23 described as the second specific example. That is, the inner lid 23 is used in which the cut line 23b extends in a direction intersecting the cutting direction X of the tab 22a at an acute angle in the vicinity 23b2 near the start point 23b1 and the vicinity 23b3 near the end point 23b4 of the cut line 23b.

(Example 3)
This example is an example using the inner lid 33 described as the third specific example. That is, the inner lid 33 in which the cut line 33b extends substantially parallel to the peeling direction X of the tab 33a in the vicinity 33b2 near the start point 33b1 and the vicinity 33b3 near the end point 33b4 was used.

(Comparative Example 1)
In this example, the lid material A4 described in Patent Document 3 is used, and the shapes of the outer lid 41 and the inner lid 43 are shown in FIGS. 9A and 9B.

  That is, the lid member A4 is formed by laminating the outer lid 41 and the inner lid 43, and has the tab 4a protruding outward from the container flange, that is, from the peripheral sealing line between the container flange and the lid member. are doing.

  As can be seen from FIG. 9B, the inner lid 43 is provided with two types of cut lines 43b and 43c. Outside the cut lines 43b and 43c, the inner lid 43 is separated between the outer lid 41 and the inner lid 43. A layer 42 is provided.

  The cover 4 has a notch 4e near the tab 4a. The notch 4e is arranged within a range not exceeding a peripheral sealing line formed when the lid member 4 is heat-sealed to the flange portion B2 of the container B. In FIG. 9B, 43x indicates an outer edge of the peripheral seal line, and 43y indicates an inner and outer edge.

  One of the two cut lines 43b and 43c is a cut line for partially opening the container with a lid when the tab 4a is pulled to partially peel off the lid material 4 from the container. A start point 43b1 is provided in the vicinity of the notch 43e. The start point 43b1 extends across the peripheral seal line from the start point 43b1 toward the center of the inner lid 43. Then, the inner lid 43 circulates so as to be approximately bisected, and returns to the vicinity of the notch 43e again across the peripheral sealing line. Therefore, when the tab 4a is pulled, the outer lid 41 and the inner lid 43 are first cut by the notch 4a.

When the cutting line reaches the start point 43b1 and the end point 43b4 of the cutting line 43b, the inner lid 43 is cut by the cutting line 43b. Since the peeling layer 42 is provided between the outer lid 41 and the inner lid 43 in a region outside the cut line 43b, the outer lid 41 and the inner lid 43 are peeled by the peeling layer 42. On the other hand, in the region inside the cut line 43b, the release layer 42 does not exist between the outer lid 41 and the inner lid 43, and the outer lid 41 and the inner lid 43 are bonded to each other. Therefore, the inner lid 43 remains on the container flange in the region of the peripheral sealing line sealed by the container flange, and in the region inside the cut line 43b, the outer lid 41 and the inner lid 43 are integrally formed from the container opening. It is removed and this part opens. Then, the molten metal can be poured from this partial opening. After pouring as described above, the opening can be closed. By closing the opening after pouring in this way, it is possible to cook the contents such as fried noodles.

  Next, of the two types of cut lines 43b and 43c, the other cut line 43c is a cut line for forming a hole for discharging hot water that is no longer needed after pouring and cooking. For this reason, the cut line 43c is arranged in a region opposite to the region to which the tab 43a belongs with the cut line 43b interposed therebetween, that is, in a region outside the cut line 43b. When the tab 4a is pulled again after cooking, first, the opening for pouring partially opens as described above, and then, when the cutting line reaches the cutting line 43b, the outer lid 41 and the inner lid are separated by the release layer 42. 43 is peeled off, and the outer lid 41 is removed while the inner lid 43 is left at the container opening. When the cut line 43c is reached, since the peeling layer 42 does not exist in the region inside the cut line 43c, the inner lid 43 is removed together with the outer cover 41 in the region inside the cut line 43c, Holes are formed.

  Finally, by removing the inner lid 43 remaining in the container opening from the container flange, the contents such as fried noodles can be eaten using the container as it is as tableware.

(Comparative Example 2)
This example is an example in which an inner lid 53 having a closed cut line 53b is used (see FIG. 10). The cut line 53b is disposed along the inner edge of the peripheral sealing line formed by sealing the container B flange portion B2, and thus does not reach the tab 53a.

(Evaluation)
After the lids of Examples 1 to 3 and Comparative Examples 1 and 2 were heat-sealed to the container, the tip of the tab was picked up and pulled up to peel and open the periphery of the tab. At this time, it was evaluated whether or not the outer lid and the inner lid easily peeled off. In addition, this evaluation was performed about 30 samples about each cover material.

  As a result, with respect to the lid materials of Examples 1 to 3, the outer lid and the inner lid were easily peeled off, and thus, the lid was easily opened and the pouring opening was opened.

  The lid of the second embodiment can be more easily peeled off than the lid of the first embodiment, and the lid of the third embodiment can be more easily peeled off than the lids of the first and second embodiments. Was easily peeled off. From this result, it can be understood that the smaller the intersection angle between the separating direction X of the tab and the cut line is an acute angle, and the smaller the intersection angle, the better the peeling and opening property.

  On the other hand, with respect to the lid materials of Comparative Examples 1 and 2, the outer lid and the inner lid did not easily peel off, and it was confirmed that the openability was inferior to Examples 1 to 3. In the lid material of Comparative Example 2, the outer lid and the inner lid did not peel off for 10 of the 30 samples, and the pouring opening could not be opened in the first place.

A1: Lid material 1a: Tab 11: Outer lid 11a: Tab 12: Release layer 13: Inner lid 13a: Tab 13b: Start point 13b2: Near start point 13b3: Near end point 13b4: End point 13c: Cut line 13d: Inside Lid outer line 13x: Outer edge A2 of the peripheral sealing line formed by sealing on the container flange portion A2: Lid material 23: Inner lid 23a: Tab 23b: Cut line A3: Lid material 33: Inner lid 33a: Tab 33b : Cut line A4: Lid material 43: Inner lid 43a: Tab 43b: Cut line

Claims (7)

A lid material that seals to a flange around the container opening to close the opening,
Having a tab protruding outside the flange, the outer lid and the inner lid are overlapped, and a cut line is provided on the inner lid, and the cut end is located on the opposite side of the tab tip. The outer lid and the inner lid are easily peeled off in the area,
A lid material, wherein a starting point of the cut line is located on the tab, and the cut line extends beyond a peripheral sealing line sealed by the flange.   The lid material according to claim 1, wherein a starting point of the cut line is located on an outline of the inner lid.   The lid material according to claim 1, wherein the cut line extends in a direction orthogonal to a peeling direction of the tab in the vicinity of the starting point.   The lid material according to claim 1, wherein the cut line extends in a direction intersecting at an acute angle with respect to a peeling direction of the tab in the vicinity of the starting point.   The cover material according to any one of claims 1 to 4, wherein the end point of the cut line is located on the tab.   The lid material according to claim 5, wherein an end point of the cut line is located on an outline of the inner lid.   The lid material according to any one of claims 1 to 6, wherein a release layer is provided between the outer lid and the inner lid at a position outside the cut line.

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