JP2019214407A - Lid of packaging container - Google Patents

Abstract

To provide a lid of a packaging container which has a ventilation portion that secures gradual ventilation, and does not permit invasions of garbage and foreign bodies etc. in a state fitted on the container.SOLUTION: An annular portion 11 which opposes to and comes in contact with an opening flange, and a skirt portion 12 which is formed so as to suspend from a periphery of the annular portion 11, and an annular side wall 13 which stands from the inner of the annular portion 11, and a top lid plate 14 which is continuously provided to the upper edge of the side wall 13 are included. The skirt portion 12 comprises a concave annular groove 15 which concaves outwardly in an inner face of an upper end root portion so as to come in tightly contact with an outer edge of the opening flange. In the skirt portion 12, longitudinal concave grooves 18 as ventilation portions each of which extends in the pendency direction of the skirt portion 12 are formed in inner face predetermined positions to secure portions to be able to ventilate between the outer edge of the opening flange and the concave annular groove 15.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a lid for a packaging container, and particularly to a lid suitable for a frozen dessert container.

As a lid of this type of packaging container, an “outer lid of a container” disclosed in Patent Document 1 is known.
The outer lid of the container disclosed in Patent Literature 1 has a configuration in which, when the outer lid is pushed up due to an increase in the internal pressure of the container, a convex groove provided in the outer lid is opened to allow air in the container to escape. ing.

Japanese Patent No. 4384760

The outer lid of the above-described container has a configuration in which the ventilation groove is opened when the outer lid is pushed up in accordance with a rise in the pressure in the container. In order to realize such a configuration, in addition to the convex groove, a step portion is provided. In addition, a configuration such as a stopper rib is indispensable, and there is a problem that the shape and configuration of the outer lid are complicated.
In addition, since the outer lid of the above-described container is one in which the outer lid is pushed up and the ventilation groove is opened with an increase in the internal pressure of the container, for example, the container is filled with ice confectionery and an inner stopper, and the lid is closed and the inside of the container is opened. In the case of quick freezing, etc. after closing the container, the ventilation groove does not work, the volume of air inside the container decreases, the container and lid are dented, and it is not suitable for shipping. There was a problem of becoming.

  The present invention has been made on the basis of such a background, and provides a lid for a packaging container having a ventilation groove that allows entry of dust, foreign matter, and the like while securing gentle ventilation when mounted on the container. The main purpose is to

  In order to achieve the above object, the invention according to claim 1 is a plastic lid fitted to a container having an opening flange having a circular shape in a plan view, facing the opening flange. An annular portion that abuts, a skirt portion that is formed to hang down from the outer periphery of the annular portion, an annular side wall that rises from the inner periphery of the annular portion, and an upper edge of the sidewall. A top cover plate, the skirt portion is provided with a concave ring groove which is recessed outward on an inner surface of an upper end root portion so as to be in close contact with an outer peripheral edge of the opening flange, and the skirt portion includes: A ventilating part is formed at a predetermined position on the inner surface to secure a part that can be ventilated between the outer peripheral edge of the opening flange and the concave ring groove. .

The invention according to claim 2 is the lid of the packaging container according to claim 1, wherein the ventilation portion includes a longitudinally extending groove extending in a direction perpendicular to the skirt portion.
The invention according to claim 3 is characterized in that the annular portion has a change in thickness in the circumferential direction such that swelling portions are scattered on the lower surface in the circumferential direction. 4. The lid of the packaging container described in 1. above.

The invention according to claim 4 is such that a plurality of convex portions formed by expanding the lower portion of the side wall outward and the annular portion expanding upward are scattered in the circumferential direction. The lid of the packaging container according to claim 2, wherein the lid is formed.
The invention according to claim 5 is the lid of the packaging container according to claim 4, wherein one of the plurality of convex portions has an inner surface communicating with the ventilation portion. .

The invention according to claim 6 is characterized in that the ventilation portion is formed in at least two places separated by 90 ° from the skirt portion with respect to the center of the circular canopy plate in plan view. A lid for the packaging container according to any one of claims 1 to 5.
The invention according to claim 7 is characterized in that the skirt portion is provided with a pattern consisting of regular irregularities in the circumferential direction at a portion hanging downward from the concave ring groove. It is a lid of the packaging container according to any one of claims 1 to 6.

According to the present invention, the ventilation portion formed in the skirt portion, for example, the vertically running groove secures a ventilation path between the outer peripheral edge of the opening flange and the concave ring groove. Therefore, in a state where the lid is put on the container, the inside of the container is not completely sealed, and a small amount of air can always enter and exit through the ventilation path formed by the ventilation portion.
When the ventilation portion is formed as a vertically running groove, the groove is a small groove extending upward from the lower inside of the skirt portion along the inner surface of the skirt portion, and the upper portion is connected to the annular portion. That is, the longitudinal groove is an extremely small groove formed on the inner surface of the skirt portion, is not a hole penetrating outside the lid, and does not communicate with the upper side or the side of the lid. Therefore, there is no danger of dust or foreign matter entering the container from above or from the side of the lid through the vertically running groove.

It is a schematic diagram for demonstrating the recess of the product by the sealing property of a cup and a lid. It is a perspective view showing the form of the cup and lid concerning one embodiment of the present invention. It is a top view of a lid concerning one embodiment of the present invention. It is an important section enlarged plan view of a lid concerning one embodiment of the present invention. FIG. 5 is a vertical sectional view taken along the line VV in FIG. 4. It is an important section enlarged longitudinal section for explaining gas permeability in a lid concerning one embodiment of the present invention. It is a perspective view showing the form of the lid concerning other embodiments of the present invention. It is a top view of a lid concerning other embodiments of the present invention. It is an important section enlarged plan view of a lid concerning other embodiments of the present invention. FIG. 10 is a longitudinal sectional view along XX in FIG. 9. It is a perspective view showing the form of the cup, inner plug, and lid concerning one embodiment of the present invention. It is a figure showing a top view of a lid concerning one embodiment of the present invention, and a relation with an inside plug.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a schematic diagram for explaining a recess of a product due to the hermeticity of a container (cup) and a lid.
In general, frozen desserts such as ice are rapidly cooled after filling the contents into a plastic container (cup), covering the container with a lid, and fitting. By the way, when the container is covered with a conventional lid and quenched, the container and lid are dented because the inside of the container is sealed, and the product may not be suitable for shipment. Was. (Refer to the figure in the upper column of FIG. 1)

Therefore, in the present invention, the lid is improved so that even if the lid is placed on the container, the inside of the container does not become a closed state, and a small ventilation portion can be secured. As a result, even when the container is covered with a lid and quenched, no dent is formed in the container or the lid. (Refer to the figure in the lower column of Fig. 1)
Hereinafter, the improved lid according to the embodiment of the present invention will be specifically described.

FIG. 2 is a perspective view showing the configuration of the container 1 and the lid 10 according to one embodiment of the present invention, and FIG. 3 is a plan view of the lid 10 according to one embodiment of the present invention. 4 is an enlarged plan view of a main part of the lid 10 (an enlarged plan view of a portion surrounded by a two-dot chain line IV in FIG. 3), and FIG. 5 is a longitudinal sectional view along VV in FIG. is there.
Referring to FIGS. 2 to 5, container 1 is molded of plastic as an example, and has a circular bottom surface 2 and a peripheral surface that rises so as to expand slightly diagonally upward from the periphery of bottom surface 2. 3, an opening 4 defined by the upper end of the peripheral surface 3, and an opening flange 5 projecting outward from the opening 4. The opening flange 5 has a circular shape in plan view. The form of the container 1 itself is a conventionally known form.

  The lid 10 has a flat annular portion 11 that can be in contact with the opening flange 5 of the container 1, a skirt portion 12 formed to hang from the outer periphery of the annular portion 11, It includes an annular side wall 13 rising from the inner periphery and a canopy plate 14 connected to the upper edge of the side wall 13. A concave ring groove 15 is formed at the base of the upper end of the skirt portion 12. The concave ring groove 15 is provided at an upper end portion of the inner surface of the skirt portion 12. When the lid 10 is put on the container 1 and fitted in a fixed position, the outer peripheral edge of the opening flange 5 of the container 1 fits into the concave annular groove 15 and comes into close contact therewith. Therefore, the inside of the container 1 is sealed by tight fitting between the outer peripheral edge of the opening flange 5 and the concave annular groove 15.

  The skirt portion 12 may be provided with regular concave and convex patterns 16 and 17 in the circumferential direction at a portion hanging downward from the concave annular groove 15. Providing the concave and convex patterns 16 and 17 has an advantage that the presence of the longitudinal groove 18 described below becomes less noticeable. It should be noted that the portion of the skirt portion 12 that hangs downward from the concave ring groove 15 may have no pattern or may have any pattern even when a pattern is provided.

  The feature of the lid 10 according to the present embodiment is that a ventilation portion, for example, a longitudinal groove 18 is formed in the skirt portion 12. As shown in FIG. 3, the longitudinal groove 18 is provided at a predetermined angular position on the inner surface of the skirt portion 12 with reference to the center of the circular canopy plate 14 in plan view. Only one longitudinal groove 18 may be provided in the lid 10, or a plurality of the longitudinal grooves 18 may be distributed in equiangular positions or arbitrary angular positions with respect to the center of the circular canopy plate 14 in plan view. May be provided. Furthermore, as shown in FIG. 3, in a plan view, the skirt portion 12 may be formed at two positions separated by 90 ° with respect to the center of the circular canopy plate 14.

As shown in FIGS. 4 and 5, the longitudinal groove 18 is formed at a predetermined position on the inner surface of the skirt portion 12, and is a groove whose inner surface is recessed outward. It is a very small concave groove extending in the hanging direction.
The longitudinally running groove 18 is formed such that a portion at a predetermined angular position of the annular portion 11 bulges outward in a very small mountain shape in plan view, and the bulged portion 19 a of the mountain shape in plan view extends downward in the hanging direction of the skirt portion 12. It is made to extend toward. A vertically running groove 18 is formed by the inner surface of the small ridge 19 extending in the vertical direction.

  At the portion where the longitudinal groove 18 is formed, the inner surface of the skirt portion 12 is recessed outward. Therefore, at the portion where the longitudinal groove 18 is formed, the groove bottom surface of the concave ring groove 15 is further concaved outward by the longitudinal groove 18. Therefore, the outer peripheral edge of the opening flange 5 cannot be closely fitted to the concave ring groove 15 at the portion where the longitudinally running groove 18 is formed.

  In the present embodiment, further, for example, five thick portions 11A are formed at equal intervals on the lower surface of the annular portion 11. For this reason, the lower surface of the annular portion 11 does not form an annular flat surface, and the lower surface of the annular portion 11 swells slightly downward at the portion where the thick portion 11A is formed. On the lower surface of the substrate 11, irregularities that slightly change in the circumferential direction are formed. When the thick portion 11A is scattered on the lower surface of the annular portion 11, when the lid 10 is put on the container 1, the lower surface of the annular portion 11 of the lid 10 Although in contact, the lower surface of the annular portion 11 and the upper surface of the opening flange 5 do not come into close contact with each other over the entire circumferential direction, and a minute gap for ventilation can be secured.

Instead of forming the thick portion 11A on the lower surface of the annular portion 11, the annular portion 11 is not formed as a plane extending in the circumferential direction, and the annular portion 11 is formed at a position where the thick portion is formed. It may be configured to have a concave portion that is slightly concave downward.
Since the lid 10 of the present embodiment has the above-described configuration, as shown in FIG. 6, in a state where the lid 10 is put on the container 1, a very small ventilation path indicated by an arrow A is formed between the container 1 and the lid 10. Secured at the fitting part.

Therefore, in a state where the lid 10 is placed on the container 1, the inside of the container 1 is not completely sealed, and a small amount of air can be always entered and exited.
On the other hand, the longitudinal groove 18 is an extremely small groove formed on the inner surface of the skirt portion 12 and does not communicate with the outside of the lid 10. Therefore, there is no possibility that dust, foreign matter, or the like may enter the container from the longitudinal groove 18.

  When the lid 10 according to the present embodiment is placed on the container 1, the upper surface of the opening flange 5 of the container 1 and the lower surface of the annular portion 11 of the lid 10 may be in close contact with each other to seal the inside of the container 1. Although the thick portion 11A is dispersed on the lower surface of the annular portion 11 of the lid 10 in the circumferential direction, the thick portion 11A may be a minute protrusion or a ridge. Moreover, when covering the container using the inner plug 20 mentioned later, the thick part 11A may be eliminated.

FIG. 7 is a perspective view showing a form of a lid 30 according to another embodiment of the present invention. 8 is a plan view of a lid 30 according to another embodiment of the present invention, FIG. 9 is an enlarged plan view of a main part of the lid 30, and FIG. 10 is a vertical cross-section along XX in FIG. FIG.
Referring to FIGS. 7 to 10, lid 30 is formed to have an annular portion 11 that can be in contact with opening flange 5 of container 1 (see FIG. 2) and to hang from the outer periphery of annular portion 11. The skirt portion 12 includes an annular side wall 13 rising from the inner periphery of the annular portion 11, and a canopy plate 14 connected to an upper edge of the side wall 13.

A concave ring groove 15 is formed at the base of the upper end of the skirt portion 12. Further, the skirt portion 12 may be formed with regular irregular patterns 16 and 17 in the circumferential direction at a portion hanging downward from the concave ring groove 15.
Further, as shown in FIG. 8, the skirt portion 12 is provided, for example, as a ventilating portion at two positions 90 ° apart from each other with respect to the center of the circular canopy plate 14 in plan view. A concave groove 18 is formed.

  The lid 30 further has, for example, five raised steps 31 formed by expanding the lower portion of the side wall 13 outward and expanding the annular portion 11 upward. The five convex portions 31 are formed at substantially equal angular positions with respect to the center of the circular canopy plate 14, but are not exactly at equal intervals, and have some deviation in the circumferential direction. are doing. In addition, one of the five protruding steps 31A is provided at an angular position that overlaps with the angular position of one longitudinal groove 18 in plan view (see FIG. 9). As a result, as shown in FIG. 10, the ventilation portion formed by the longitudinal groove 18 communicates with the ventilation portion communicating with the inside of the lid 30 formed by the convex step portion 31A, and the ventilation using the longitudinal groove 18 is performed. Has been realized.

When the dozens of lids 30 are loaded on the packaging machine with dozens of lids 30, the upper and lower lids 30 come into close contact with each other due to the loaded weight and the like. It is formed in order to prevent a situation in which it is not sent out in order.
In the present embodiment, five protruding portions 31 are formed at angular positions at substantially equal intervals with respect to the center of the circular canopy plate 14. The number may be any number as long as they are provided at appropriate intervals in the circumferential direction with reference to the center of the circular canopy plate 14. Rather, it is preferable that the upper and lower lids 30 are not provided at completely equiangular angular positions because the upper and lower lids 30 are hardly in close contact with each other.

FIG. 11 is a perspective view showing the configuration of the container 1, inner plug 20, and lid 10 according to one embodiment of the present invention. In the embodiment shown in FIG. 11, the container 1 and the lid 10 are the same as those in the embodiment described above.
When selling a cup of frozen dessert, there is a container in which the inner stopper 20 is fitted to the container 1 and the inner surface of the container 1 and the outer surface of the inner stopper 20 are filled with the frozen dessert. When eating the frozen dessert in such a cup, the lid 10 is removed from the container 1 and the inner stopper 20 is further removed by twisting, so that a trace hole is provided in a portion where the inner stopper 20 is fitted to the frozen dessert. It is known that a desired liquid beverage is poured into the inside and a frozen dessert is eaten while stirring.

The lid 10 of the present embodiment is also useful as a lid of the container 1 having the inner stopper 20 of this type.
FIG. 12 is a plan view showing the relationship between the lid 10, the inner plug 20 and the container 1. As shown in FIG. 12, in the lid 10, the vertically running groove 18 is formed in the skirt portion 12, and the vertically running groove 18 is formed such that the longitudinally running groove 18 is viewed from the center of the circular canopy plate in plan view. Are provided at two locations separated by 90 °.

On the other hand, the inner plug 20 has a drum-shaped upper surface in plan view.
According to this configuration, at least one longitudinal groove 18 always communicates with the inside of the container 1 irrespective of the angle at which the lid 10 and the inner plug 20 are fitted to the container 1 in plan view. Angle position. Therefore, regardless of the position where the inner plug 20 is fitted, the inside of the container 1 is communicated with the outside air by the longitudinal groove 18. Therefore, even when a sudden change in the outside temperature such as rapid cooling occurs, the container 1 It can be avoided that the lid 10 or the lid 10 is dented or swells and bursts.

  In addition, in the embodiment shown in FIG. 11 and FIG. 12, the center of the inner plug in plan view, that is, the portion of the arc where the outer peripheral surface of the inner plug 20 is in contact with the opening flange 5 of the container 1, The lid 10 is provided at 90 ° each with respect to the center of the canopy plate 14 of the lid 10. Therefore, by providing two vertically running grooves 18 at positions separated by 90 °, at least one of the vertically running grooves 18 always exists at an angular position communicating with the inside of the container 1. If the arc portion of the flange of the inner plug 20 is not 90 °, but is provided, for example, at each of the front and rear 60 °, two longitudinal recesses in a range exceeding 60 ° and less than 120 °. The groove 18 can be provided at any position at an interval. In the present invention, it is desirable to provide two vertically running grooves 18 at positions separated by 90 ° from the viewpoint of easy handling of the inner plug.

The present invention is not limited to the embodiments described above, and various changes can be made within the scope of the claims.
For example, the ventilation portion is not limited to a vertically running groove, and may be, for example, a groove that is oblique when viewed from the horizontal direction, a substantially circular or elliptical groove, or the like. In short, any shape may be used as long as the ventilation part has a structure as a ventilation path that allows a small amount of air to enter and exit by communicating with the inside of the container.

DESCRIPTION OF SYMBOLS 1 Container 2 Bottom surface 3 Peripheral surface 4 Opening 5 Opening flange 10 Lid 11 Ring part 11A Thick part 12 Skirt part 13 Side wall 14 Canopy plate 15 Concave ring groove 16, 17 Concavo-convex pattern 18 Longitudinal groove 19 Convex section 20 Inner plug 30 lid 31, 31A convex step

Claims (7)

A plastic lid fitted in a container having a circular opening flange in plan view,
An annular portion that abuts against the opening flange,
A skirt portion formed to hang from the outer periphery of the annular portion,
An annular side wall rising from the inner periphery of the annular portion;
And a canopy plate connected to the upper edge of the side wall,
The skirt portion is provided with a concave ring groove which is recessed outward on the inner surface of the upper end root portion so as to be in close contact with the outer peripheral edge of the opening flange,
In the skirt portion, a ventilation portion is formed at a predetermined position on an inner surface in order to secure a portion capable of ventilation between the outer peripheral edge of the opening flange and the concave ring groove, wherein packaging is provided. Container lid.   2. The lid of claim 1, wherein the ventilation portion includes a vertically extending groove extending in a direction perpendicular to the skirt portion. 3.   The lid of the packaging container according to claim 2, wherein the annular portion has a change in thickness in a circumferential direction such that portions bulging on a lower surface are scattered in a circumferential direction. .   The lower part of the side wall swells outward, and a plurality of convex steps formed by the annular part swelling upward are formed so as to be scattered in the circumferential direction. The lid of the packaging container according to claim 2, wherein   5. The lid of the packaging container according to claim 4, wherein one of the plurality of convex steps has an inner surface communicating with the ventilation portion.   The air-permeable portion is formed in at least two places 90 degrees apart from each other in the skirt portion with respect to the center of the circular canopy plate in a plan view. A lid for the packaging container according to claim 1.   The pattern which consists of regular unevenness in the peripheral direction is given to a part which hangs down from the concave ring groove in the skirt part, The pattern according to any one of claims 1 to 6, A lid for the packaging container as described.

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