JP4332657B2 - Cup-shaped container lid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid for containers such as instant noodles and instant soups that can be made in a short time by pouring hot water.
[0002]
[Prior art]
Many conventional instant noodle containers that are restored to hot water and used for food use are made of plastic and have a cup-like shape with good heat retention, and the opening surface is usually adhered to the edge before use. Covered by a circular flat lid.
In general, many of the lid materials have a wall thickness of around 100 μm in which a layer of polyethylene or the like, an aluminum foil, and a heat seal layer are stacked on a high-quality paper.
[0003]
[Problems to be solved by the invention]
In order to eat the instant noodles, it is necessary to first peel off almost half of the lid covering the opening and pour a required amount of hot water, and then close the lid for the time when the dried food softens.
In the meantime, however, the conventional flat lid is warped outward due to the heat shrinkage of the high-quality paper of the base material due to the heat of steam filled in the container, and there is a problem that the lid has to be pressed with an appropriate weight.
[0004]
Therefore, in order to avoid this, a film having a larger heat shrinkage is provided under the conventional paper, metal foil or the like so that the lid is automatically closed (Japanese Utility Model Publication No. 58-133574). If it is too late or interrupted, the lid will automatically close in the middle, and if you pour the hot water as it is, there is a risk of splashing on the lid and spilling out of the container.
As an improvement measure, there is a lid provided with a locking part for holding the lid during pouring (Japanese Patent Application No. 3-88733). There is a defect that a gap is generated in the steam and the temperature of the hot water leaks and the desired effect cannot be obtained.
[0005]
In addition, there is a statement that a laminated lid provided with a special base material layer performs an operation of opening the lid during pouring due to the offset of the bimetal effect and closing the lid after pouring (Japanese Patent Application No. 5-305976). However, this has the annoyance of needing to add a hand while the bimetal effect works to close the lid after pouring, and like other flat lids, it expands when a lot of hot water is added As shown in FIG. 3, the noodles and utensils tend to push up the lid to form a gap with the container.
[0006]
The present invention aims to provide a cup-shaped container lid that does not require weight during the waiting time for restoration of dried food without improving the drawbacks of these conventional lids and warping due to the steam heat of the pouring water. To do.
[0007]
[Means for Solving the Problems]
The present invention forms a lid, which covers the opening surface of a cup-shaped container and has a peripheral edge bonded thereto, in an inverted conical shape that is recessed toward the inside of the container, and a knob piece is fixed to the center of the concave surface. The lid is inverted in the shape of a regular cone by pulling upward.
As a result, during pouring, the bimetal effect works in the direction in which the open part of the inverted conical lid opens further, so the lid does not close.After pouring, the lid is inverted and the apex is directed upward. The lid formed in the shape of a regular triangular pyramid is brought into close contact with the periphery of the container opening surface by the original shape holding force.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail by way of examples.
In FIG. 1, (A) is a perspective view of a state where a lid of the present invention is attached to a cup-shaped container containing instant noodles, (B) is a longitudinal section thereof, and (C) is a longitudinal section of a state where a knob piece is pulled up. Each face is shown. (D) is an enlarged view of a lid | cover material periphery adhesion part, (E) is a side view of this invention lid | cover.
[0009]
That is, the cup-shaped container 10 contains the dried instant noodle 40, and the peripheral edge 21 of the conical lid 20 is provided on the edge 12 of the opening surface thereof as shown in FIG. 1 (A). Are bonded so as to form an inverted triangular pyramid shape with the apex recessed toward the inside of the container.
The container 10 is made of polystyrene paper or the like molded into a cup shape and has a thickness of about 2 mm and has high heat retention.
[0010]
The conical lid 20 has a conical angle of about 12 °, and a knob piece 30 is fixed to the center thereof, and a knob portion 22 used as an opening for pouring is integrally provided on the periphery.
In addition, the material similar to the lid | cover of a common instant noodle is used for a lid | cover material. That is, a suitable adhesive layer and an aluminum foil layer, and a heat seal layer, etc., are laminated on a high-quality base paper and have a thickness of about 200 μm. As shown in FIG. Although what can be thermally bonded to 12 is used, it is not limited to this, and any material can be used as long as it can be formed into a cone-shaped lid by press.
In addition, in order to form a lid | cover in cone shape, as shown to FIG.1 (E), the fan-shaped part (21) along one radius of a circular lid | cover material is folded up.
[0011]
In order to eat instant noodles in a cup-shaped container equipped with the lid of the present invention configured as described above, as shown in FIGS. 2 (1) to (4), the lid 10 is halved with the knob portion 22 on the periphery of the lid. After pouring hot water and pouring hot water, the lid 20 is closed, and then the knob piece 30 at the center of the lid 20 is pulled upward, the lid 20 is inverted and becomes a regular cone shape with the center tip facing upward. The lid periphery is in close contact with the opening edge of the container.
[0012]
Next, the reason why the conical lid 20 is bonded in an inverted conical shape with the apex recessed toward the inside of the container in the present invention will be described.
That is, as shown in FIG. 4 (A), in a hollow conical lid C with a fixed peripheral edge, one part of the peripheral edge is peeled off, and this is raised in the direction of arrow P to open about a half of the side surface S. Then, the conical lid C is stretched along the peripheral edge a-b, so that the stress that keeps the original shape is exerted and the resistance increases, and if the force in the P direction is further increased, the conical lid is greatly deformed and may be damaged depending on the material. And lose its original shape.
[0013]
On the other hand, as shown in FIG. 5B, in the case of the conical lid C ′ having the peripheral edge fixed in an inverted shape, when removing one portion of the peripheral edge and raising it in the direction of the arrow Q, the conical lid C 'Is due to the fact that since the compressive force is applied along the peripheral edge ab, the stress to keep the original shape is much smaller and the resistance is less, and the side surface S can be opened relatively easily.
[0014]
In the embodiment, in order to perform the above-described operation, the type and thickness of the lid constituting material and the size of the conical angle α of the lid, and the container opening surface corresponding to the type and thickness of the container material corresponding thereto are used. The relative conditions of each elastic in the diametrical direction must be considered, but the main point is that the lid material can be deformed temporarily but without damaging the reverse → reverse conical shape between the positive conical shape and still keep the original shape Provided that
[0015]
In addition, although said Example described the conical lid | cover with respect to a cup-shaped container with a circular opening surface, this invention respond | corresponds also with respect to each with a regular polygon or a rectangular container similarly. The same can be applied when using a pyramid-shaped lid.
Further, in the present invention, the conical or pyramidal lid is formed by cutting out a part of the cover material without depending on the folding of a part of the cover material as in the above embodiment, and the relative edges of the remaining parts. Of course, it is also possible to connect them with an adhesive.
[0015]
Furthermore, the shape of each lid has a slightly concave shape near the apex, or a crease pattern, etc., and the pressure contact force between the lid and the container after pouring is shifted by shifting the bonding position between the lid and the container edge. Various modifications such as an increase are conceivable, but they are all included in the scope of the present invention.
【The invention's effect】
As described above, the present invention is a cup-shaped container containing dry foods for snacks, and has a multi-layered conical lid or pyramid-shaped lid that includes fine paper and metal foil so that the apex is directed inward in the container. Due to the mechanical properties of the cone, it is easy to open a part of the side for pouring, and the bimetal effect works in the direction to open the lid during pouring, and it closes There is no danger of spilling hot water by pouring on the lid, and the lid retains its original shape retaining force when it is inverted and turned into a regular triangular pyramid with the apex facing upward. Since it is in close contact with the periphery of the opening surface of the container, it is very convenient to handle because there is no hassle to put weight in order to prevent the temperature inside the container from falling due to warping, like the conventional flat lid, In addition, after pouring, the lid turned into a regular cone or regular pyramid shape by inversion , Does not occur a gap between the container pushed up by the Food inflated because maintaining sufficient space between the well water surface when generous pouring.
[Brief description of the drawings]
FIG. 1A is a perspective view of a state where a lid of the present invention is attached to a cup-shaped container,
(B) is a longitudinal sectional view thereof,
(C) is a longitudinal sectional view showing a state where the knob piece is pulled up;
(D) is an enlarged view of the lid peripheral edge bonding portion,
(E) is a side view of the lid.
FIG. 2 is a diagram showing the order of use of a cup-shaped container equipped with a lid of the present invention.
FIG. 3 is a view showing an example of a closed state of a conventional instant noodle lid.
FIGS. 4A and 4B are explanatory views of side surface peeling stress of a fixed inverting conical lid. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Container 11 Opening surface 12 Opening edge 20 Lid 21 Perimeter 22 Knob part 30 Knob piece

Claims (2)

A conical lid (20) or a pyramid having a peripheral edge (21) bonded to the edge (12) of the opening surface (11) of the container (10) to cover the opening surface and a vertex bonded to the inside of the container. A lid (20 '), characterized in that after opening a part thereof and pouring and pouring the knob piece (30) fixed at the center upward, it is inverted and the apex is directed upward. A lid of a cup-shaped container containing dry food for snacks. 2. The cup-shaped container lid according to claim 1, wherein a fan-shaped portion (21) along one radius of the circular lid material is folded to form a conical shape.

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