JP2011168311A - Container used for microwave oven - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve the problem that the synthetic resin container used in a microwave oven, of which a fit part is formed between the container body and the lid body to be fitted thereto so that the fit part is firmly fitted while being cooled and is loosened as the container expands in accordance with an increased temperature to release air and steam generated inside the container, causes contamination due to, for example, soup stock splattering inside the microwave oven by boiling steam pressure burst-opening the lid body from the loosened gap. <P>SOLUTION: Narrow flanges 23A and wide flanges 23B are continuously integrally formed in the outer circumference of a food accommodating portion shaped in a concave in the middle part of a container body 20. A lid body 30 has an outer shape the same with the container body 20. The lid body 30 formed with finger hook portions 34 shaped in upward convexes on wide flanges 33B, and ribs 35 on an inner side of flanges 33 other than the finger hook portions 34. The lid body 30 is fitted onto the container body, thereby, steam paths 40 communicating in a longitudinal direction are formed from the finger hook portions 34 and the faces of the flanges 23B, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a synthetic resin lunch tray that has come to be used frequently in general households, and is used when warming food in a microwave oven using the lunch tray and can also be used for storage. About.

  Lunch trays are also widely used in restaurants. For example, rice and side foods are arranged in a dish-shaped lunch tray and are widely used regardless of whether they are Japanese or Western. When the lunch tray food is warmed in a microwave oven, the food wrap is generally covered with a film-like wrap, and the end of the wrap is wrapped under the tray so as to wrap the dish-like lunch tray. Therefore, when heated in a microwave oven, there may be a popping sound that causes the air to expand and tear the wrap, and the boiled juice that has accumulated inside the wrap travels down the wrap and leads to the dish-shaped lower part. As a result, the inside of the microwave oven is soiled.

  Putting food into a container, preserving the food, and heating the food with a microwave oven, an annular groove is provided on the outer periphery of the opening edge of the container body, and it is fitted to the container body The lid body is provided with a fitting edge to be fitted in the annular groove, the container is fitted with the lid body by fitting the annular groove and the fitting edge, and changing the fitting position between the two. There is a container with a food storage lid in which an action part is formed so that the inside of the body can be sealed or ventilated (see Patent Document 1 below).

  In addition, when heated in a microwave oven, by partially releasing the fitting of the corner part by the pressure of water vapor generated inside the container to create a vent path and releasing the generated water vapor to the outside, and then stop heating There is also a packaging container that can take in air that flows back into the container through the air passage without naturally sealing the container with a lid even when the temperature inside the container is lowered (see Patent Document 2 below). ).

  A lid fitting portion capable of fitting the peripheral flange portion of the lid body is provided inside the peripheral edge portion of the container body, and the lid fitting portion is configured to place a steam from the placement surface portion and the placement surface on which the peripheral flange portion of the lid body can be placed. There has also been proposed a food container for a microwave oven in which an upright wall portion that rises except for a removal recess is provided with a locking recess that can be allowed to float by steam from the mounting surface portion of the lid (see Patent Document 3 below). .

  Furthermore, when cooking with a microwave oven, the steam is automatically controlled so that the fitting between the container body and the lid does not come off due to the vapor pressure, and no broth leaks out of the container. A cooking system container has also been proposed (see Patent Document 4 below).

Japanese Utility Model Publication No. 62-96343 JP 2001-97436 A JP 2004-35051 A JP 2004-305716 A

  In the containers for microwave ovens described in Patent Documents 1 to 4, both the container body and the lid body are made of heat-resistant synthetic resin, but the annular groove and the fitting edge of the container body are fitted. The fitting position between the two is changed to allow the container body to be sealed or ventilated (see Patent Document 1), but the operator changes the fitting position so that the ventilation is possible. If you forget, boiling water will push the lid open and may foul the microwave oven.

  Further, although the container body is shallow, at least the lid is formed of a sheet-like thin material, and the container body and the lid are coupled by an engaging portion (fitting portion) provided on the lid. The inside is expanded as the temperature rises, or shrinks as it cools, and the steam generated inside is released to shrink (see Patent Documents 2, 3 and 4). It is molded from a sheet-like thin material and deforms as the temperature changes.From this point, it is difficult to attach the lid to the container body, and when the temperature rises in a short time like a microwave oven, There is a risk that the contents in the inside will suddenly boil, push the lid open and overflow the broth, as well as the inside of the microwave oven as before.

  That is, an object of the present invention is to provide a synthetic resin lid suitable for a container body for a lunch tray (hereinafter referred to as a “container body”) formed of a synthetic resin.

  The present invention adopts the following configuration as means for achieving this object.

  The container of the present invention has a concave storage portion for storing food in the center, and an external dish formed of a heat-resistant synthetic resin material integrally with a wide flange that is horizontal at the top of the recess and a narrow flange. It is composed of a container body having a shape and a lid body that has the same outer shape as that of the container body and is molded from a heat-resistant synthetic resin, and upwards at the center of the wide flange that follows the narrow flange of the lid body. A convex finger-hanging portion is provided, and the lid is put on the container body so as to be overlapped with each other by a flange portion, and the finger-hanging portion has a steam passage communicating with the flange surface of the container body in the longitudinal direction. Forming is the first feature.

  The container body is generally used in restaurants and is also used in general households. This container body has a recess for storing food in the center, and is a container body in which a wide flange and a narrow flange are integrally molded. The wide flange is inherently hand-held and used for decoration. It is also the place where the design of is given. Even when the lid is simply placed or removed, the flange portion on the outer periphery of the container body is flat, which makes it difficult to position the lid. In order to solve this problem, it is possible to fit by placing a finger hook on the wide part of the lid, holding the lid with the finger on the finger hook, and placing it on the flange of the container so as to match the outer shape of the container The steam passage is formed by the finger-hanging portion and the flange of the wide portion of the container body. This steam passage quickly releases the steam accompanying the high temperature when cooking in a microwave oven, and even if the temperature rises and the boiled juice splashes up like a splash, there is a wide part, so the contamination due to the splash is a container body Stays on the wide flange part.

  The lid includes a side surface falling in a posture inclined obliquely outward from the upper bottom surface, a flange surface on the lid side formed in a strip shape in the horizontal direction along the entire peripheral edge of the side surface, and a finger hook portion formed in a convex shape. The second feature is that the container body and the lid body are fitted and combined by ribs formed along the inner periphery of the lid-side flange surface except for the above.

  The rib provided on the lid not only maintains the strength of the lid, but is loosely fitted to the container body to be fitted, but the guide at the time of fitting is combined with the container body and the lid body Prevents skidding when carrying around, and when using a microwave oven, even if the broth boils up like a splash, the rib guides into the container body with the condensation, and it rises up to the flange part of the container body. A flange that is a steam passage portion of the flange, and a rib that hangs down to the narrow flange portion, prevents intrusion.

  Furthermore, the third feature is that the lid is formed of a translucent heat-resistant resin so that the inside can be seen through at least from the upper bottom surface.

  Even if the lid is fitted on the container body, it is desirable that the inside can be seen through at least from the upper bottom so that the inside can be seen. That is, with the improvement of appetite by visual observation, even when cooking in a microwave oven, it is easy to confirm when observing the state from the outside.

  The lid made of the synthetic resin of the present invention is provided with a finger-hanging portion with its wide flange portion, so that a vapor passage is formed that is superimposed on the wide flange portion of the container body and communicates with both sides, and is a microwave oven. When cooking inside, the splash of boiled juice like food splashing is kept in the wide flange of the container body, so there is no fouling in the microwave oven. When the container body and the lid body are combined and transported, there is a gap between the upper surface of the finger hook and the flange lower surface of the container body. Safety is guaranteed.

In addition, the lid and the flange are provided on the lid by the rib provided along the inner periphery of the flange excluding the finger-hanging portion of the lid and the flange, and the container and the lid are fitted together while holding the lid at the finger-hanging portion. Although the lid ribs are fitted with sufficient clearance, they function as positioning with respect to the container body, and during cooking in a microwave oven, even if water vapor generated from food in the container body is condensed, the condensation is prevented. When returning to the container body and cooking with a microwave oven, splashed water droplets from the food are prevented from entering between the overlapping flanges excluding the steam passage.

  The lid is molded with the same plate thickness as the container, so it has a weight, so it is stable with a loose fit, and can withstand the use of an automatic dishwasher. Can be used hygienically, without being disposable, regardless of restaurant or general household, and contributes to eco-friendliness. In addition, when transporting the container body and the lid in a state of being assembled, there is a gap between the upper surface of the finger hook and the flange lower surface of the container body. Can be transported.

  That is, the container body and the lid body have a loose combination, but hold the fingers on the finger-hanging part, and it is easy to fit by the guide of the rib while abutting between the flanges, and it is easy to remove, the finger-hanging part is Since the air passage is formed by the wide flange portion of the container body, it functions as a steam escape passage when using the microwave oven.

The perspective view which shows embodiment which incorporated the cover body in the container body of this invention. The top view of the container shown in the said embodiment, and sectional drawing of the principal part. The top view of the cover body shown in the said embodiment, and sectional drawing of the principal part. Full sectional view of the central position in which the lid body is fitted and assembled to the container body shown in the above embodiment. Sectional drawing of the principal part which the container body shown in the said embodiment and the cover body assembled.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a synthetic resin container body of the present invention and a lid body fitted into the container body will be described below with reference to the drawings.

  The container 10 includes a container body 20 formed of a heat resistant synthetic resin and a lid body 30 (FIG. 1). The resin material of the container body 20 is molded using a material such as PET resin, PBT resin, or ABS resin, and the interior and exterior are painted with a urethane resin paint or the like in order to improve the decorativeness of the container. This PET resin may be a pulverized product of recycled PET bottles. When this resin is mixed with PBT resin or ABS resin, the color and gloss of the resin are improved in the molded state depending on the mixing ratio. This is suitable because the properties appear and the crystallinity and paintability of the resin are improved.

  The lid 30 may of course be molded from the above heat-resistant synthetic resin, but is molded from a PP resin that is a translucent heat-resistant synthetic resin. This is because the food in the container 10 can be seen without opening the lid 30 and the inside can be monitored and confirmed during operation in the microwave oven. For reference, the molding thickness T1 of the container body 20 and the molding thickness T2 of the lid body 30 are about 1.5 mm to 3 mm, and the plate thickness is designed to be as thin as possible regardless of strength. .

  The outer shape of the container 20 includes a bottom surface 21, a side surface 22 that rises obliquely outward from the bottom surface 21, and a horizontally narrow flange 23 </ b> A and a wide flange 23 </ b> B on the entire peripheral edge of the side surface 22. Thus, the flange 23 is formed (FIGS. 2A and 2B). In the illustrated example, the inside of the container body 20 is divided into an inverted V-shaped partition 24 formed integrally with the container body 20, and in the illustrated example, the staple food (rice) storage part 2A and the three side food (prepared food) storage parts 2B. It is divided into ... and.

  The container body 20 is designed around the storage portions of the staple food storage portion 2A and the side food storage portion 2B. In other words, the storage portion shown in FIG. 2 is formed by forming a wide flange 23B and a narrow flange 23A into an integrated outer shape based on a shape in which a rectangular corner portion is rounded and a straight portion is formed in an arc shape. The storage portion can be designed in a circular shape or a polygonal shape, and the lid 30 is designed based on the storage portion of the container body 20 and the overall outer shape thereof.

  In addition, the container body 20 of such a form can be stored by stacking a large number of sheets up and down to form a stag (not shown). Further, leg ribs 25 are formed at the four corners on the back surface side of the bottom surface 21 of the container body 20. The leg ribs 25 ... also serve as a positioning function on the lid 30 of the lower container 10 when stacking a large number of containers 10 in addition to the original function of stably placing on the table. It is used when storing the stored food (see FIGS. 4 and 5).

  Since the outer shape of the lid body 30 is designed based on the storage portion of the container body 20, the outer shape is substantially the same external shape as the container body 20, and is inclined outwardly from the upper bottom surface 31 and the upper bottom surface 31. The side surface 32 that falls in the posture and the flange 33 that is formed in a strip shape in the horizontal direction along the entire peripheral edge of the side surface 32 are formed as a flange 33 surface by forming a narrow flange 33A and a wide flange 33B in series. Yes. At the center of the surfaces of both the wide flanges 33B, a finger hook portion 34 that is convex upward with respect to the surface of the flange 33B is integrally formed (FIGS. 3A, 3B, and 3C).

The upper bottom surface 31 is set at a position slightly lower than the upper end of the side surface 32. As a result, the outer peripheral portion of the upper bottom surface 31 is formed with a falling step 3A. Further, the leg ribs 25 of the container body 20 described above are positioned by the falling step 3A when the containers 10 are stacked and stagged.

  Inside the flange 33 of the lid body 30, except for the finger hook portions 34 of the both flanges 33 </ b> B, ribs 35 are installed in a suspended state on the surface of the flange 33, and when the lid body 30 is fitted on the container body 20, A steam passage 40 is formed by the finger hook 34 at the center in the longitudinal direction of 33B and the surface of the flange 23B of the container body 20.

  The lid 30 is molded using PP resin, and the side surface 32 and the flange 33 may be simultaneously molded with a sculpture-like pattern at the time of molding, or may be painted after molding, but at least the upper bottom surface 31 remains translucent. Like to do. Although not shown, such a lid body 30 can be sagged by stacking a large number of lid bodies 30 alone.

  The container body 20 and the lid body 30 are combined so that the finger-holding portion 34 of the lid body 30 is held by a finger and the flange 33 surface of the lid body 30 is overlapped on the flange 23 surface of the container body 20. That is, when the outer shapes of the flanges 23, 33 are matched with the narrow flanges 23 A, 33 A and the wide flanges 23 B, 33 B, the rib 35 fits inside the side surface 21 of the container body 20. Combined. This Saddle eye is a fit that can afford to play together.

  Therefore, any combination of the container body 20 and the lid body 30 can be combined and removed by anyone who can put the finger on the finger-hanging portion 34 and lift the lid body 30. And the rib 35 guides in the container body 20, and the finger-hanging part 34 can form the vapor | steam channel | path 40 with the flange 23B which opposes only by combining (FIG. 1, FIG. 5).

  The steam passage 40 can be set by recessing the flange 23B portion of the container body 20; however, when the container body 20 is dish-shaped and the flange 23 does not have a height from its bottom surface, There is also a relationship, and it is advantageous to set the lid 30 side.

  The container 10 in a state in which the container body 20 and the lid body 30 are assembled has a thickness with a gap between the top of the finger-hanging portion 34 and the lower surface of the flange 23B. Since it becomes easy to add, the container 10 can be safely processed in carrying and taking in / out when using a microwave oven.

  Further, when the container 10 is cooked in the microwave oven, the dew that accumulates inside the lid body 30 is dropped into the container body 20 along the ribs 35, and the boiled juice splashing like a splash hits the inside of the lid body 30. Then, it is dropped into the container body 20 together with condensation. Moreover, in the steam passage 40, the boiled soup splashed like a splash rises to the flange 23B of the container body 20, but the flange 23B has a length because it is a wide portion, so it is not released to the outside. There will be no fouling in the microwave.

  That is, by providing the lid body 20 with a simple convex finger-hanging portion 34, the lid body 30 can be easily attached to the container body 20 and easy to handle, thereby improving convenience, and the vapor passage 40 is formed. While the fitting combination of the lid body 30 and the lid body 30 is in a loose relationship, the outside of the container body 20 is not sprinkled with something like boiled juice that causes fouling.

2A staple food storage part 2B secondary food storage part 10 container 20 container body 23 flange 23A (narrow) flange 23B (wide) flange 24 middle partition 30 lid 31 upper bottom surface 32 side surface 33 flange 33A (narrow) flange 33B (Wide) flange 34 Finger hook 35 Rib 40 Steam passage

Claims (3)

The container has a concave storage section for storing food in the center, and an external dish shape in which a narrow flange that is horizontal at the top of the recess and a wide flange are integrally molded from a heat-resistant synthetic resin material. And a lid made of a heat-resistant synthetic resin material having the same outer shape as that of the container body, and the center of the wide flange following the narrow flange of the lid body is directed upward. A convex finger-hanging portion is provided, and the lid is fitted on the container body so as to be overlapped with each other, and the finger-hanging portion forms a steam passage communicating with the flange surface of the container body in the longitudinal direction. It is characterized by
Container for microwave oven. The lid body includes a side surface that falls in a posture inclined obliquely outward from the upper bottom surface, a flange surface on the lid body side that is horizontally formed along the entire peripheral edge of the side surface, and a finger hook portion that is formed in a convex shape. The rib is formed along the inner periphery of the flange excluding the flange, and is fitted and combined in the container body,
The container for microwave ovens of Claim 1. The lid is formed of a translucent heat-resistant synthetic resin material, and at least the upper bottom surface can be seen through the inside,
The container for microwave ovens of Claim 2.

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