JP4861724B2 - Instant food container lid - Google Patents

Description

  The present invention relates to a lid portion of an instant food container that facilitates carrying operation and the like.

  When a conventional instant food container is covered, there is a method of heat-sealing a composite sheet of paper and a synthetic resin, a synthetic resin single layer or a multilayer composite sheet, or a method of fitting a lid formed of a synthetic resin or the like. It is used.

  In the case of a sheet-like lid, in most cases, a part of the lid is opened for pouring and then resealed after pouring. As the resealing method, a tab or the like is bent and temporarily fixed on the side wall of the container, or is temporarily fixed by attaching an attached seal. However, this sheet-like lid has many gaps between the containers, and when it is carried after pouring, hot water spills or steam leaks easily.

  In addition, in the lid part that mates with the container, the heat of steam generated from hot water is transferred by conduction etc., the fitting part becomes very hot, and it is difficult to carry and drain hot water with this fitting part. is there.

  For example, Patent Documents 1 to 5 disclose a method of providing a finger pressing portion at a fitting portion of the lid in the lid portion of the instant food container.

Japanese Utility Model Publication No. 51-54006 Japanese Utility Model Publication No. 2-15819 Japanese Utility Model Publication No. 2-87715 Japanese Utility Model Publication No. 2-87783 Japanese Patent Laid-Open No. 10-45178

  In Patent Document 1, the finger portion provided on the lid is flat, and the contact area that touches the finger is large and does not prevent heat. Moreover, since the steam generated from the hot water inside is discharged, the finger may become hot because the heat of the steam is constantly supplied to the finger portion. Further, since the belly of the finger hits the steam outlet, the leaked steam may directly touch the finger.

  Further, in Patent Document 2, a convex small protrusion group is provided on the holding finger portion around the fitting lid for the purpose of reducing the contact area between the finger and the lid. However, even in this device, the heat of steam is transmitted to the finger part directly or by heat conduction, and the heat insulating effect is insufficient.

  In Patent Documents 3 and 4, for the purpose of reducing the contact area between the fingers and the lid by the linear projections or the dot-like projections, a group of convex small projections is provided on the holding finger portion around the fitting lid. However, this device also has a heat insulating effect that is insufficient because the finger portion becomes hot.

  In Patent Document 5, a protrusion such as a streak is provided in the finger part provided in the peripheral part of the fitting lid, and the heat of steam is released to the outside by communicating with the outside air to contact the outside air. Increases thermal insulation effect. However, there is a possibility that the adhesion between the container and the lid portion at the fitting portion is deteriorated, and further, the steam flows backward from the air passage for introducing the outside air and leaks outside.

  When hot water is poured into the container, the heat source is due to the hot water itself and steam. The finger feels extremely hot when the heat source leaks out of the container and the lid and directly touches the finger, and when the heat source is transmitted from the contact surface between the finger and the container or the lid due to heat conduction. The above-mentioned prior art has paid much attention to suppressing the heat conduction in the latter contact area.

  Actually, it is difficult to completely seal in the fitting of the container and the lid portion with the synthetic resin material. This is because the properties of the synthetic resin are bent or deformed by heat or weight. Providing a flow path with the outside air as in Patent Documents 1 and 5 may cause hot water or steam to leak into the outside air through this flow path, and is not safe because it increases safety.

  The object of the present invention is to solve the above-mentioned problems and make it difficult to transfer heat to the finger part when carrying it away or carrying out a hot water draining operation by moving away from the finger part with hot water or steam heat source poured. The object is to provide a lid for a food container.

The lid part of the instant food container according to the present invention for achieving the above object comprises a rectangular peripheral part fitted to the peripheral part of the instant food container for pouring hot water, rising from the peripheral part, and from the peripheral part It is composed of a prosthetic roof part with a small pentagon around the periphery, provided with three flat parts without the roof part in the peripheral part, and two flat parts on both sides as finger-holding parts for hooking the Haiyuana for Haiyu hot water in the container to the remaining flat portion of the peripheral portion is provided, the stripe-like uneven portion of the large number of along the vertical direction on the inclined portion of the side wall of the roof portion It is provided .

  According to the lid part of the instant food container according to the present invention, it has a prone roof shape, convects steam along its side wall, and secures a space volume to keep the generated steam inside the roof. The heat transfer to the surrounding fingers is reduced by making the shape so that steam does not accumulate in the fingers.

  The present invention will be described in detail based on the embodiments shown in the drawings.

FIG. 1 is a perspective view of the lid 2 fitted to the container 1. The rectangular lid portion 2 fitted on the container 1 is formed of a synthetic resin material such as polystyrene or polypropylene resin by an appropriate method such as heat molding or injection molding. The lid portion 2 is provided with a peripheral portion 2a formed so as to be in contact with the upper side of the peripheral portion 1a and to cover the periphery thereof in order to be fitted and locked to the peripheral portion 1a of the container 1. The lid 2 is fitted and locked to the container 1.

  A central portion of the lid portion 2 is provided with a roof portion 2c having a prone shape rising from the peripheral portion 2a with the peripheral portion 2a as a skirt, and a flat top portion. Two large inclined portions 2d are provided, and small inclined portions 2e are separately provided at two opposite corner portions. When the container 1 is held, the peripheral portion 2a in the vicinity of the inclined portion 2e is, for example, a holding finger portion 2f for hanging a thumb, and has a relatively wide area. Furthermore, for example, about 20 to 40 uneven portions 2g are formed in the inclined portions 2d and 2e in a streak shape in the vertical direction.

  In order to reconstitute the instant food inside the container 1, the lid 2 is removed by the locking part 2 b, hot water is poured into the container 1, and then the lid 2 is fitted and locked again. The container 1 and the lid 2 are heated by the heat of the steam and the generated steam. At this time, steam causes convection in the space in the roof portion 2c of the lid portion 2, and the steam H is promoted by the uneven portions 2g of the inclined portions 2d and 2e and rises as shown in FIG.

  At this time, even if there is a gap G between the peripheral part 2a of the lid part 2 and the peripheral part 1a of the container 1, the gap G is smaller than the space in the roof part 2c. The steam H hardly flows into G, and the steam H rises by being guided by the uneven portions 2g of the inclined portions 2d and 2e of the roof portion 2c. The heat from the steam H is also transferred to the holding finger portion 2f of the peripheral portion 2a by heat conduction, but since the distance is long, the heat transfer is mitigated by heat radiation from the peripheral portion 2a. Thereby, the finger | toe attached to the holding finger | toe part 2f of the container 1 can hold the container 1 safely, without feeling extreme heat.

  The streak-like uneven portion 2g provided on the inclined portions 2d and 2e preferably has a shape that flows toward the ceiling of the roof portion 2c in order to give direction to the convection. The size and length of the concavo-convex portion 2g is preferably determined as appropriate depending on the size of the container 1, the amount of pouring, the stackability of the lid, the mechanical characteristics during packaging, and the like.

  Regarding the size of the finger part 2f, that is, the distance of the finger part 2f from the end position of the peripheral part 2a to the inclined parts 2d and 2e of the roof part 2c, the size of the lid part 2, the container 1, and the weight of the contents It is determined based on the above. However, in consideration of the stability when held with a finger, it is desirable that the holding finger portion 2f be of a size that can be held by a finger and that the width be about 10 to 20 mm so that it does not bend when held.

  Although an example is shown about the shape of the roof part 2c, it is effective that the level | step difference of the peripheral part 2a and the top part of the roof part 2c has a height of 10 mm or more. In addition, the effect of immediately rising from the peripheral portion 2a enhances the effect. However, if the inclined portion 2e in the vicinity of the peripheral portion 2a having the holding finger portion 2f is provided with a large number of uneven portions 2g, the effect can be obtained.

  In addition, about the shape of the container 1 and the cover part 2, even if it is another polygon, it is satisfactory even if it is circular.

  FIG. 3 shows a perspective view of the second embodiment. The lid portion 12 for the container 11 is formed as one inclined portion 12d by omitting the two inclined portions 2d of the first embodiment, the peripheral portion 12a is expanded, and the roof portion 12c. Is approximately pentagonal. The inclined portions 12d and 12e are provided with a large number of uneven portions 12g as in the first embodiment. A plurality of drain holes 12h are formed in the flat portion of the expanded peripheral portion 12a.

  Also in the second embodiment, the steam H rises the inclined portions 12d and 12e of the roof portion 12c along the uneven portion 12g, and alleviates the temperature rise of the peripheral portion 12a, particularly the finger portion 12f.

  In this way, when the lid 12 has a hot water discharge function and the container 1 and the lid 12 are tilted, the hot water enters the gap portion of the holding finger portion 12f when the hot water inside the hot water discharge hole 12h is discarded. In order to prevent this, it is preferable to avoid the holding finger portion 12f from approaching the hot water discharge hole 12h.

  In the lid portion 12 for draining the hot water poured into the container 11, the size, number, formation method, etc. of the hot water hole 12 h are appropriately determined depending on the size and material of the lid portion 12. Is done.

It is a perspective view of the state where the lid part was fitted in the container of Example 1. It is explanatory drawing of the behavior of the steam in a cover part and a container. It is a perspective view of the state where the lid part was fitted in the container of Example 2.

Explanation of symbols

1, 11 Container 1a Peripheral part 2, 12 Lid part 2a, 12a Peripheral part 2b, 12b Locking part 2c, 12c Roof part 2d, 2e, 12d, 12e Inclined part 2f, 12f Holding part 2g, 12g Concavity and convexity part 12h Exhaust part Hot water hole

Claims (2)

Consists of a peripheral portion of the rectangle to be fitted to the periphery of the container instant food for pouring the hot water, and Fushimi bowl-shaped roof which has a substantially pentagonal around less than rising the peripheral portion from the peripheral portion, the Three flat parts without the roof part are provided in the peripheral part, the two flat parts on both sides are used as finger gripping parts, and hot water in the container is drained to the remaining flat part of the peripheral part. A lid for an instant food container, characterized in that a hot water drainage hole is provided, and a plurality of streaky irregularities are provided along the vertical direction on the inclined portion of the side wall of the roof portion. 2. The lid of the instant food container according to claim 1 , wherein the inclined portion of the roof portion in the vicinity of the flat portion which is the holding finger portion is provided with a larger number of the uneven portions than other portions. Department.

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