JP3213110U - Packaging container lid - Google Patents

Abstract

The present invention provides a lid for a packaging container that has a mechanism for releasing steam generated when heated in a microwave oven to the outside and can prevent insects and foreign substances from entering as much as possible. A packaging container lid according to claim 1 is a lid that covers a packaging container body that is scheduled to be heated in a microwave oven while food is contained in the container body. A notch 20 was provided in the top plate portion of the. The lid of the packaging container described in claim 2 is the lid of the packaging container according to claim 1, wherein the top plate is provided with a concave surface 12 that is recessed toward the container body, and a notch 20 is provided in the concave surface. . The lid of the packaging container according to claim 3 is the lid of the packaging container according to claim 1, wherein the top plate portion is provided with a slope that is recessed toward the container body, and the slope is provided with a cut. According to a fourth aspect of the present invention, the lid of the packaging container according to the fourth aspect is configured such that the cut is formed in a curved shape in the lid of the packaging container according to any one of the first to third aspects. [Selection] Figure 1

Description

  The present invention relates to a lid for a food packaging container used for storing a lunch box or various cooked foods, and more specifically, has a mechanism for releasing steam generated when heated in a microwave oven to the outside. In addition, the present invention relates to a lid for a packaging container capable of preventing insect mixture.

  At retail outlets such as supermarkets and convenience stores, lunch boxes and various cooked foods are packed and displayed in packaging containers.

  Such a packaging container includes a container main body configured to be able to store food, etc., a lid detachably attached to the opening of the container main body, and an opening of the container main body that contains the contents of the lid. The film packaging material which fixes a container main body and a cover body in the state attached to the part is provided.

  A packaging container that is film-wrapped after containing food or the like as described above is often heated using a microwave oven as it is film-wrapped.

  In a packaging container used for the above-mentioned purposes, water vapor generated when heated in a microwave oven is ensured so that the liquid juice of food contained in the container body does not leak outside. Therefore, it is required to release water vapor out of the container so that the container does not expand excessively or burst. Therefore, a valve is provided on the lid or a hole is provided to release water vapor to the outside.

  Patent Document 1 discloses a packaging container in which fitting of a corner portion is partially released by the pressure of water vapor generated inside the container when heated in a microwave oven and water vapor is released to the outside.

  Patent Document 2 discloses a packaging container in which an exhaust hole is formed in at least one of a flange of a container body or a flange of a lid.

  Patent Document 3 discloses a packaging container capable of forming a valve by providing a notch in the lid of the packaging container to release steam.

  Patent Document 4 discloses a packaging container in which an exhaust hole is provided in a lid by irradiating a laser beam.

JP 2001-97436 A JP 2007-276835 A Registered Utility Model Publication No. 3138601 JP 2017-81599 A

  As described above, it is desirable that a container in which food or the like is packaged be provided with a means for releasing steam.

  In the case where a valve is provided on the lid as such means, when a load is applied to the valve, for example, by placing the container on top of each other, the valve descends toward the container body, and a gap is created in the lid. Then, there is a risk that insects may enter from the gap or foreign matter may be mixed.

  In addition, when an exhaust hole is provided by irradiating a laser beam, the width of the exhaust hole is normally set to about 0.2 to 0.4 mm. The possibility of contamination has been pointed out. In addition, in order to provide an exhaust hole by irradiating with a laser, it is necessary to make fine settings according to the thickness of the object, etc., and it is also necessary to check the size of the hole, which tends to complicate the manufacturing process. is there.

  Accordingly, the present invention provides a lid for a packaging container that has a mechanism for releasing steam generated when heated in a microwave oven to the outside and that can prevent insects and foreign substances from entering as much as possible. For the purpose.

  The configuration of the present invention that solves the above problems is as follows.

  (1) The lid of the packaging container according to claim 1 is a lid that covers the packaging container body that is planned to be heated in a microwave oven while food is contained in the container body. A cut was provided in the part.

  (2) The lid of the packaging container according to claim 2 is the lid of the packaging container according to claim 1, wherein the top plate is provided with a concave surface recessed toward the container body, and a cut is provided in the concave surface. did.

  (3) The lid of the packaging container according to claim 3 is the lid of the packaging container according to claim 1, wherein the top plate is provided with a slope that is recessed toward the container body, and a cut is provided in the slope. did.

  (4) The lid of the packaging container according to claim 4 is the lid of the packaging container according to any one of claims 1 to 3, and the cut is formed in a curved shape.

  It will be outlined with reference to the drawings how the present invention configured as described above works to solve the problems.

  The packaging container lid 10 according to the present invention is used by covering the container body 30 with food or the like not shown in the figure as shown in FIGS.

  As shown in FIG. 1 and FIG. 2, the lid 10 of the packaging container according to the present invention is provided with a notch 20 on its top surface 11. Because of the cutting, the gap is extremely small compared to the case of providing a hole as in the conventional example, and it is easy to make it 0.1 mm or less.

  In addition, if a cut is provided with a Thomson blade or a die equipped with a blade, a cut mark is generated on the cut surface, but this cut mark also has an effect of making it difficult for foreign objects and insects to enter.

  In the second aspect of the invention, a cut is provided in the concave surface 13 shown in FIG. Because of the concave surface, there is slack, and because of this slack, it is easy to deform, and when heated in a range, water vapor can be easily released.

Overall perspective view of the lid of the packaging container and the container body FIG. 2 is a sectional view taken along line AA in FIG. 1. BB sectional view of only the lid of the packaging container in FIG. A sectional view taken along line BB in the device according to claim 2. BB line sectional view in the device according to claim 3 A perspective view of the device of claim 4 Schematic showing an embodiment with cuts Schematic of the state covered with film

 Hereinafter, preferred embodiments of the components of the present invention will be outlined with reference to the drawings. In addition, embodiment of the component of this invention is not limited to the following embodiment at all, As long as it belongs to the technical scope of this invention, various forms can be taken.

  A lid 10 for a packaging container according to the present invention is used by being fitted into an opening 31 of a container body 30 as shown in FIG. The container main body 10 contains food and is cooked by microwave irradiation in a microwave oven with the lid 10 covered. In addition, as shown in FIG. 8, the lid 10 is sold as a shrink pack with the film 40 in a state in which the lid 10 is fitted to the container body 10, and is often heated in the range as it is.

 Although the lid 10 is illustrated in a circular shape in plan view, the shape thereof is appropriate according to the opening of the container body 30 and can be a polygonal shape, an elliptical shape, or the like.

  The lid 10 is formed of a synthetic resin sheet that can be mass-produced and manufactured inexpensively and easily. Specifically, thermoplastic resin sheets such as polyethylene, polypropylene, polystyrene, and polyethylene terephthalate (PET resin) can be used.

  The top surface 1 of the lid 10 is provided with a recess 12, and a notch 20 is provided on the bottom surface of the recess 12. The concave portion 12 is provided in order to avoid contact between the notch 20 and the film of the finger or shrink pack, that is, to prevent the notch 20 from being pushed by the finger or film and generating a gap.

   The fitting between the container body 30 and the lid 10 shown in the figure is a form called inner fitting, and the outer peripheral part 13 of the lid 10 is fitted into the opening 31 of the container body 30. Of course, in addition to the illustrated inner fitting, the fitting form can be an outer fitting. For example, it is a form in which the edge of the lid covers the opening of the container body from the outside.

  A notch 20 is provided on the bottom surface of the recess 12 provided in the lid 10. The cut 20 may be one or plural. Further, the cut 20 may be linear or may be curved as shown in FIG.

  The bottom surface of the recess 12 may be a horizontal flat surface as shown in FIG. 2, or may be a concave surface recessed toward the container body as shown in FIG. Further, it may be a slope as shown in FIG.

  The synthetic resin sheet of the present invention is molded by closely contacting and heating a mold by vacuum, compressed air, or vacuum / pressure.

  Next, as a second stage, a cut is provided using a Thomson blade, a male blade or a female blade. FIG. 7 shows an implementation state in which a cut is made using a male blade and a female blade. In FIG. 7, 50 is a fixed blade and 60 is a movable blade. The fixed blade 50 is provided with a female blade 52 on the side surface in the vertical direction continuous to the upper surface support portion 51 that supports the lid 10 of the sheet forming container conveyed downward from the opening.

  On the other hand, the movable blade 60 includes a male blade 61 that moves up and down so as to be fitted into the female blade 52 of the fixed blade 50. Further, the inside of the movable blade 60 is a relief recess 62 having the same shape as the top surface of the sheet molding lid.

10 .. Cover 11 for packaging container .. Top surface 12.. Recess 13.. Concave surface 20.

Claims (4)

  A packaging container characterized in that a lid is placed on a packaging container body that is scheduled to be heated in a microwave oven in a state where food is contained inside the container body, and a notch is provided in the top plate portion of the lid body Lid.   The lid of the packaging container according to claim 1, wherein the top plate is provided with a concave surface that is recessed toward the container body, and a cut is provided in the concave surface.   The lid of the packaging container according to claim 1, wherein a slope that is recessed toward the container body is provided on the top plate, and a cut is provided on the slope.   The lid of the packaging container according to any one of claims 1 to 3, wherein the cut is a curve.

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