JP3109803B2 - Container with closed lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin or paper-made container capable of containing foodstuffs, especially prepared foods containing fluids such as broth in a supermarket or a store.

[0002]

2. Description of the Related Art Various types of containers with resin lids arranged in stores are known. Among them, for example, as shown in FIG. Is attached to an annular bent portion 101a having a hook-shaped cross section outwardly.
The annular bent portion 102a is fitted. As shown in the partially enlarged portion of FIG.
The tapered surface of the outer edge side surface 101b of the outer edge side 1a at the angle θ1 where the lid inlet side opens, that is, a large diameter, and the tapered surface of the outer edge side surface 102b of the bent portion 102a of the lid 102 are formed at substantially the same angle. The side surface 101c is formed in such a manner that the taper surface of the angle θ2 at which the lid inlet side becomes narrow, that is, the diameter becomes smaller, and the taper surface of the lip side surface 102c of the bent portion of the lid 102 are formed at substantially the same angle, and have a tongue-shaped cross section. The lid is made difficult to be detached from the container by the taper fitting and the fitting in which the small diameter portion goes over the large diameter end.

In the enlarged view of the fitting portion in another form shown in FIG. 15, the mouth-side fitting surfaces 101c and 102c are formed with a straight or draft so that the entrance is formed with a taper that can be opened, and the outer side surface is tapered in the opposite direction. The lid makes the lid difficult to detach from the container by fitting.

[0004]

In the former fitting surface of FIG. 14 described in the prior art, the contact pressure is weak and the entire circumferences are not always in close contact. The latter figure 1
In the cross-sectional shape of FIG.
Since the fitting of 1 is only engaged by the tapered surface of the outer peripheral side surface 101b of the bent portion and the outer peripheral side surface 102b of the bent portion, the contact pressure is similarly weak and the entire circumference is not necessarily in close contact. However, when side dishes containing fluids such as broth are put in a container, there is a problem that the broth flows out during transportation or depending on how to place them.

[0005] In recent years, a method called easy open easy peel has been used to prevent outflow of boiling juice. This method requires two steps, a step of applying an adhesive to the joint between the container and the lid, and a step of putting the article and then bringing the lid and the container into close contact with each other by pressure, resulting in an increase in cost.
In addition, since it is formed from a sheet, the thickness of the formed portion is not strictly constant, and there is immovability, so that there is a problem that uneven adhesion may occur and it may not be a stable juice leakage measure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to improve the airtightness of a container when a lid is covered and to improve the airflow in a container. It is an object of the present invention to provide a closed-type container with a stable lid that is stable in quality and that does not increase the cost of animals flowing out.

[0007]

In order to achieve the above object, a container with a closed lid according to the first aspect of the present invention has a hook-like cross section extending outward from an edge of a resin or paper container (21). Resin or paper lid (31) on the annular bent portion (22)
A container with a lid that covers an annular bent portion having a hook-like cross-section, wherein the outer edge side surface of the annular bent portion (22) of the container has a large diameter at the lid entrance and an inversely tapered angle θ1 and the edge side surface has a lid entrance. Is formed in a reverse taper with an angle θ2, the outer side surface of the annular bent portion (32) of the lid is formed with a reverse taper with an angle θ1 and the edge side surface is formed with a reverse taper with an angle θ2. Either an annular engaging concave portion or an annular engaging convex portion is provided on the back surface of the bent portion upper surface (25) and the bent portion upper surface (35) of the lid, and the annular engaging convex portion (36A) has an R dimension of the convex surface. Is formed slightly larger than the R dimension of the concave surface (26) of the engagement partner, so that the convex portion engages on two lines at both corners of the concave portion at two-point contact with the cross section, and the lid is covered with the container. When it is made into a two-line annular linear contact by the fitting force based on the reverse taper fitting The bent portion and the serial bent portion is intended to be pressed.

In the container with a closed lid according to the second aspect of the present invention, the reverse taper of the annular bent portion of the container and the annular bent portion of the lid is only on the outer edge side surface of the bent portion of the container and the outer edge side surface of the bent portion of the lid. It is what it was.

The closed container with a lid according to the third aspect of the present invention is provided with a resin-made or paper-made container having a hook-shaped cross-section (42) extending outward from the edge of the resin-made or paper-made container (41). A container with a lid for covering an annular bent portion having a hook-shaped cross section of a lid-made lid (51), wherein an outer side surface of the annular bent portion of the container has a large diameter at a lid entrance and is formed in an inverse taper at an angle θ1 to form a lid. The outer edge side surface of the annular bent portion is also formed in a reverse taper at an angle θ1, so that the edge side surface of the bent portion of the container and the edge side surface of the bent portion of the lid are slightly separated from each other. ) On the rim side surface (44) and on the rim side surface (54) of the bent portion (52) of the lid fitted in the bent portion, the annular engaging concave portion (46) or the convex portion engaging with the annular engaging concave portion. Either of the annular engaging projections (56) whose arc diameter is substantially the same as or different from the arc diameter of the concave portion. The upper and lower corners of the concave portion and the convex portion are brought into contact with each other with two lines, and when the lid is covered with the container, the engaging concave portion and the engaging convex portion are brought into contact with the annular two lines. Is to be pressed.

In the container with a closed lid according to the fourth aspect of the present invention, the angle θ of the reverse taper is also provided at the edge side surface (44) of the annular bent portion of the container and the edge side surface (54) of the annular bent portion of the lid.
2 is provided to have a club shape in cross section.

The closed container with a lid according to the fifth aspect of the present invention is provided with a resin-made or paper-made container having a hook-shaped cross-section bent outward from the edge of the resin-made or paper-made container. A container with a lid for covering an annular bent portion having a hook-shaped cross section of a lid (51), wherein the outer edge side surface of the annular bent portion of the container has a large diameter at a lid entrance and is formed in an inverse taper at an angle θ1. The outer edge side surface of the annular bent portion is also formed in a reverse taper with an angle θ1, the edge side surface of the bent portion of the container is perpendicular to the container bottom surface, and the gap between the edge portion side surface of the bent portion of the lid is the container inlet side. The edge side surface of the bent portion is inclined in a reverse taper so as to become larger, and the edge side surface (44) of the bent portion (42) of the container and the bent portion (5) of the lid fitted in the bent portion are formed.
2) The annular engaging concave portion (46) or the annular engaging convex portion of which the circular arc diameter of the convex portion engaging with the circular engaging concave portion is substantially the same as or different from the circular arc diameter of the concave portion. (56) is provided so that the upper and lower corners of the concave portion and the convex portion are in contact with each other with two lines, and when the lid is covered with the container, the engaging concave portion and the engaging convex portion are formed in an annular shape. Are brought into pressure contact by the contact of the two wires.

In the container with a closed lid according to the sixth aspect of the present invention, the side surface on the rim side of the annular bent portion (42) of the container (41) is formed to have a tapered entrance angle θ3 by narrowing the entrance and forming the lid (51). The taper on the side of the edge of the annular bent portion is tapered in the same direction and has an angle θ4 larger than the angle θ3.

Further, in the container with a closed lid according to the present invention, the fitting portion between the outer edge side surface of the annular bent portion of the container and the outer edge side surface of the annular bent portion of the lid is changed to the outer edge side of the annular bent portion. The annular engagement protrusion (58) on the side surface and the lower portion on the outer edge side surface of the annular bent portion serve as a fitting portion.

In the container with a closed lid according to the eighth aspect of the present invention, the annular engaging projection is brought into pressure contact with the annular engaging concave portion by contacting the annular engaging concave portion with the upper or lower corner line. is there.

According to the first and second aspects of the present invention, the container with the lid is the container 2
1 is covered with a lid 31, and when the annular bent portion 22 and the annular bent portion 32 having a bee-shaped cross section are pressed up and down to fit together, the detachment of the lid is prevented and at the same time, the upper surface 35 of the bent portion and the upper surface 25 of the annular bent portion are provided. Annular engagement protrusion 36A or 36B
Is pressed against the annular engagement concave portion 26 by two annular lines at both ends of the concave portion, and the airtightness of the lid and the container is maintained.

In the container with a lid according to the third, fourth, fifth and sixth aspects of the present invention, when the lid 41 is put on the container 41 and the annular bent portion 42 and the annular bent portion 52 are pressed up and down to fit together, the outer edge of the bent portion is formed. The reverse taper of the side surface 43 and the bent portion outer edge side surface 53 is engaged, and at the same time, the annular engagement concave portion 46 and the annular engagement convex portion 56 provided on the bent portion edge side surface 44 and the bent portion edge side surface 54 are engaged. As a result, the lid is prevented from being detached, and the upper and lower corners of the engagement concave portion and the engagement convex portion are pressed against each other by an annular line contact, thereby maintaining the airtightness between the lid and the container.

In the container with a lid according to the seventh aspect of the present invention, when the lid is put on the container and the annular bent portion and the annular bent portion are pressed up and down to fit together, the annular engaging projection on the outer edge side surface of the bent portion of the lid is formed. The lower part of the outer peripheral side of the annular bent portion engages with the lower part of the annular side, and the annular engaging projection on the side of the peripheral side makes annular line contact with the upper and lower corners of the annular engaging recess on the side of the peripheral side, thereby improving the airtightness of the container. Will be kept.

According to the invention of claim 8, in the container with a lid, when the lid 51 is put on the container 41 and the container is fitted by being pressed up and down, the reverse taper of the bent portion outer edge side surface 43 and the bent portion outer edge side surface 53 is engaged. At the same time, any one of the upper and lower corners of the annular engaging concave portion 46 of the bent portion edge side surface 44 and the annular engaging convex portion 56 of the bent portion edge side surface 54 are circularly pressed by one line in contact with each other, and the lid is closed. Of the lid and the container are kept airtight.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings. Container 1 made by sheet molding using thermoplastic resin
As shown in FIG. 1, a truncated pyramid is formed with a taper so that the mouth side is opened so that it is easily detached from the mold, and the mouth edge is formed in an annular shape having a hook-like outward shape for reinforcement. A bent portion 2 is formed. The outer periphery 3 of the bent portion 2 has an inverse taper having a large diameter on the upper side (lid entrance), and the rim side surface 4 of the bent portion 2 is formed with a reverse taper having a small diameter on the upper side (lid entrance). θ1 and θ2 are both in the range of 1 ° to 5 °, preferably 2 ° to 3 °.

A tongue 6 protruding at right angles to the side is formed at a lower end of a part of the outer peripheral side surface 3 of the bent portion, and the tongue 6 is substantially parallel to a diagonal line not including the tongue of the container 1. An oval-shaped concave fitting portion 7 serving as a female hook is formed on the hook. The recessed fitting portion 7 is formed in a tongue-shaped cross-section with an expanded bottom. Further, a tongue piece 8 serving as a knob is formed at a corner facing the tongue piece 6 at a right angle to the lower end of the bent portion outer edge side surface 3 where the lid 11 is easily opened.

As shown in FIG. 2, the lid 11 covered by the container 1 has an annular bent portion 1 which engages with the bent portion 2 of the container 1.
An outer edge side surface 13 that fits tightly with the bent portion outer edge side surface 3 of the container 1 in the bent portion 12 and a bent portion edge side fitted into the bent portion edge side surface 4 of the container 1 A side surface 14 is provided. The bent portion outer edge side surface 13 has a small diameter reverse taper on the lower side (lid entrance), and the bent portion edge side surface 14 has a large diameter reverse taper on the lower side (lid entrance). Taper angles θ1, θ
2 and the same angle.

A tongue 16 is formed on the lid 11 at a position corresponding to the tongue 6 when the container 1 is covered with the tongue 6 so as to project laterally at a right angle from the lower end of the bent portion outer edge side surface 13.
A circular convex fitting portion 17 that fits substantially at the center of the position corresponding to the concave fitting portion 7 is formed below. The tip of the tongue-shaped cross-section of the convex fitting part 17 is formed to have a diameter slightly larger than the width of the tongue-shaped concave fitting part 7 with an open bottom by, for example, 0.3 to 0.5 mm. The base of the tongue piece 16 forms a thin portion 19 along the outer periphery of the lid 11 so that it can be easily bent. A tongue piece 18 is formed at a position corresponding to the tongue piece 8 of the container 1 so as to protrude from the lower end of the bent portion outer edge side surface 13 at a right angle to the side. The tongue piece 18 and the tongue piece 8 of the container 1 are each gripped. The phases are slightly shifted for ease.

Next, the operation will be described. Container 1
In a preparation room such as a supermarket, prepared foods containing fluids such as broth for one person are filled and the lid 11 is placed in the container 1.
The concave fitting part 7 of the tongue piece 6 and the convex fitting part 17 of the tongue piece 16 which are placed on the hook are pressed and fitted from above and below, and the bent part 12 of the lid 11 is further bent into the bent part of the container 1. Fit into 2,
When the container 1 and the lid 11 are fitted by being pressed up and down, the bent portion outer edge side surface 13 and the edge side surface 14 of the lid 11 are tapered in reverse to the bent portion outer edge side surface 3 and the bent portion edge side surface 4 of the container 1 respectively. The fluid inside is prevented by the close contact portion and does not flow out.

To remove the contents of the container 1, one of the tongue pieces, for example, 8 is gripped with the left hand and the other tongue piece 18 is gripped with the right hand and opened up and down, whereby the bent portion 12 and the bent portion 2 are disengaged. Then, when the lid 11 is lifted, the thin portion 19 of the tongue piece 16 is bent so that the contents can be taken out without hindrance even if the lid 11 is continued to the fitting portion serving as a hook. When it is desired to remove the lid 11 from the container 1, the lid 11 can be separated by pulling apart the fitting portion serving as a hook.

Embodiment 1 The parts different from the above are only the bent part and the bent part, and the other parts are the same and will not be described. Container 2 as shown in FIG.
1 and a lid 31, an outer side surface 23 and an edge side surface 2 of an annular bent portion 22 having a hook-shaped cross section of the container 21.
4 have the same reverse taper angles θ1 and θ2 as described above.
Is provided, and an engagement concave portion 26 is provided in an annular shape substantially at the center of the upper surface 25 of the bent portion.

Outer edge side surface 33 of bent portion 32 of lid 31
And the edge side surface 34 have opposite taper angles θ1, θ
2 is provided at substantially the center of the rear surface of the upper surface 35 of the annular bent portion, and the engaging projection 3 shown in FIG.
6A is provided in an annular shape, and the engaging convex portion comes into contact with the engaging concave portion 26 before the bent portion 32 is completely inserted into the bent portion 22 having the hook-shaped cross section.

The annular engaging convex portion 36A has a two-point contact in cross section because the R dimension of the convex surface is formed slightly larger than the R dimension of the concave surface of the mating partner. On two lines. Therefore, when the lid 31 is covered with the container 21, the annular engaging concave portion 26 and the annular engaging convex portion 36A or 36B are pressed against each other by an annular line contact to maintain the airtightness.

Incidentally, as shown in FIG.
It is possible to maintain almost the same airtightness even if only the bent portion outer edge side outer periphery 23 and the bent portion outer edge side inner periphery 33 of the lid 31 are straight, and the bent portion edge inner periphery 24 and the bent portion edge side inner periphery 34 are straight. it can.

Second Embodiment The second embodiment differs from the first embodiment only in the bent portion and the bent portion, and the other portions are the same.
As shown in FIGS. 6 and 7, the outer peripheral side surface 43 of the annular bent portion having the hook-shaped cross section and the outer peripheral side surface 53 of the annular bent portion are fitted with an inverse taper angle θ1. Hereinafter, this fitting is referred to as "a-shaped fitting". An annular engaging concave portion 46 is provided on an edge side surface 44 of the annular bent portion 42 having a hook-shaped cross section of the container 41,
An annular engaging projection 56 that engages with the annular engaging concave portion 46 is provided on the edge side surface 54 of the bent portion 52 of the lid 51.

The annular engaging projection 56 is formed in the annular engaging recess 4.
6 in contact with the shoulder in two lines or one line,
4 and the edge side surface 54 of the bent portion are slightly separated from each other. Therefore, when the lid 41 is covered with the container 41, the annular engaging convex portion 56 is brought into close contact with the annular engaging concave portion 46 in an annular and linear manner, and is pressed to maintain the airtightness. In addition, as shown in FIG. 8, the opposite side taper angle θ2 is also provided to the bent portion rim side surface 44 and the bent portion rim side surface 54, so that the hermeticity can be similarly maintained as a cross-section tongue shape.

Embodiment 2 A second modification will be described. An annular engaging projection that fits between an edge of the annular bent portion having a hook-shaped cross section of the container and an edge of the annular bent portion having a hook-shaped cross section of the lid;
FIG. 9, which is a modification of FIG. 7 in which the concave portion is formed, will be described with respect to portions different from FIG. 7. The fitting on the outer edge side is an a-shaped fitting, the edge side surface 44 of the bent portion 42 of the container 41 is substantially perpendicular to the container bottom surface, and an annular engaging concave portion 46 is provided substantially at the center or below. Have been.

The edge side surface 54 of the bent portion 52 of the lid 51
Is the taper angle θ2 at which the gap is increased on the inlet side of the container 41.
An annular engaging projection 56 that engages with the annular engaging recess 46 is provided on the side surface 54. The annular engaging projection 56 is brought into contact with the upper and lower corners of the annular engaging recess 46 or two lines of the upper and lower corners. Further, the diameter of the arc of the convex portion may be substantially the same as or different from that of the concave portion. The ceiling surface of the bent portion and the bent portion may be in close contact or may have a gap.

In FIG. 10, the fitting portion on the outer edge side in FIG. 9 is changed, and an annular bent portion 42 having a hook-shaped cross section of the container 41 is shown.
An annular engaging concave portion 47 is formed on the lower edge of the outer edge side surface 43 of the outer peripheral side of the outer peripheral side surface 43, and the annular engaging concave portion 47 is engaged with the outer edge side surface 53 of the bent portion 52 having a hook-like cross section of the lid 51. An engagement protrusion 58 (which may be considered as an annular engagement recess for fitting the back surface) is provided and fitted. The fitting of the engaging portion is referred to as "b-shaped fitting". The annular line contact between the annular engaging convex portion 56 and the annular engaging concave portion 46 on the side surface on the edge side is brought into contact with strong surface pressure.

In FIG. 11, the annular engaging concave portion of the outer edge side surface 43 of the annular bent portion 42 of the hook-shaped cross section of the container 41 of FIG. 10 is removed, and the underside thereof is replaced with the outer edge side surface of the annular bent portion 52 of the lid 51. The annular engaging projection 58 of 53 is hooked. Hereinafter, this fitting is referred to as a C-shaped fitting.

In FIG. 12, the container 41 shown in FIG.
Of the annular bent portion 42 is formed into a taper with a taper angle θ3 where the entrance is narrowed and the annular bent portion of the lid 51 has a taper larger than the taper angle θ3 in the same direction as the above-mentioned taper. The taper angle is θ4. In this example, the fitting is a-shaped, but the fitting is b-shaped or c-shaped.

[0036]

Since the present invention is configured as described above, the following effects can be obtained. According to the first and second aspects of the present invention, one of the annular engaging concave portion and the engaging convex portion is provided on the upper surface of the bent portion of the container and the bent portion of the lid, and the bent portion and the bent portion are fitted. At this time, both corners of the engaging concave portion and the engaging convex portion are brought into close contact with each other by an annular two-line contact so that the hermeticity is maintained, so that a special process such as easy opening and easy peeling is required in sheet molding. Instead, a high sealing performance is obtained by molding in the usual process, so even if a container with a lid with a low product cost is put into the container, for example, a side dish containing the liquid, it is difficult for the liquid to flow out. Depending on the inside or the place, the fluid does not flow out and contaminate the surrounding goods.

The third, fourth, fifth, sixth, and seventh aspects of the present invention provide an annular engagement convex portion and an annular engagement portion which are fitted to an edge side surface of an annular bent portion of a lid and an edge side surface of an annular bent portion of a container. Since the engagement recess is formed, two annular lines having a high surface pressure are brought into contact with each other at two positions of the upper and lower corners of the recess, so that the hermeticity of the container is maintained.

According to the eighth aspect of the present invention, when the annular bent portion of the container and the annular bent portion of the lid are fitted to each other, the annular engaging concave portion and the annular engaging convex portion have a high surface at one line of the upper or lower angle of the concave portion. The container is kept hermetically sealed because of the annular pressure line contact.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of a container of a closed-type lidded container serving as a base of the present invention, wherein (a) is a front view and (b) is a side sectional view.

FIGS. 2A and 2B are views of a lid of a container with a closed lid which is a base of the present invention, wherein FIG. 2A is a front view and FIG.

FIG. 3 is a side sectional view of a first closed container with a lid according to the first embodiment of the present invention.

FIG. 4 is an enlarged view of a fitting portion between the first lid and the container, showing a state of a contact portion when a convex R is larger than a concave R;

FIG. 5 is an enlarged view of the fitting portion when only the outer fitting surface of the first bent portion and the bent portion has an inverse taper.

FIG. 6 is a side sectional view of a second lid and a container according to the embodiment of the present invention.

FIG. 7 is an enlarged view of a fitting portion between the second lid and the container in the embodiment.

8 is an enlarged view of a joint portion between the lid and the container in which the side surface on the rim side of the second embodiment shown in FIG. 7 is inclined.

9 is an enlarged view of a joint portion between the lid and the container, in which the side surface on the edge side of the bent portion in FIG. 7 of the second embodiment is inclined.

FIG. 10 is an enlarged view of a joint portion between the lid and the container in which the outer side surface of the second embodiment shown in FIG.

11 is an enlarged view of a joint portion between the lid and the container in which the outer side surface of the second embodiment shown in FIG.

FIG. 12 is an enlarged view of a joint portion of the container in which the container entrance is narrowed on both sides of the edge of both the container and the lid in the second embodiment shown in FIG. 7;

FIG. 13 is a side sectional view of a conventional container with a lid.

FIG. 14 is an enlarged view of a fitting portion of FIG.

FIG. 15 is an enlarged view of a fitting portion in a different mode from FIG.

[Explanation of symbols]

 1,21,41 Container 11,31,51 Lid 2,22,42 Annular bent portion 12,32,52 Annular bent portion 3,23 Outer edge side surface of bent portion 4,24,44 Edge side surface of bent portion 5,25 bent Upper surface 13, 33 Outer edge side surface of bent portion 14, 34, 54 Edge side surface of bent portion 15, 35 Upper surface of bent portion 26, 46, 47 Annular engaging concave portion 36A, 56, 58 Annular engaging convex portion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 43/06 B65D 77/20

Claims (8)

(57) [Claims] 1. An annular bent portion having a hook-shaped cross section of a resin or paper-made lid (31) is provided on an annular bent portion having a hook-shaped cross section extending outward from an edge of a resin or paper container (21). A container with a lid, wherein the container has an annular bent portion (22).
Has a large diameter of the lid entrance and a reverse taper at an angle θ1, and a rim side has a small diameter of the lid entrance and a reverse taper at an angle θ2, and the outer side surface of the annular bent portion (32) of the lid. Is a reverse taper at an angle θ1 and the rim side surface is formed at a reverse taper at an angle θ2, and the upper surface of the bent portion of the container (25)
Either an annular engaging concave portion or an annular engaging convex portion is provided on the back surface of the upper surface (35) of the bent portion of the lid, and the annular engaging convex portion (36A) has a convex surface with a R dimension of a concave surface ( 26) It is formed slightly larger than the R dimension, so that the convex portion engages on two lines at both corners of the concave portion at two-point contact in cross section, and when the lid is covered with the container, a reverse taper fitting is performed. A container with a closed lid, wherein the bent portion and the bent portion are pressed against each other by a two-line annular linear contact by a fitting force based thereon. 2. The sealed type according to claim 1, wherein the reverse taper of the annular bent portion of the container and the annular bent portion of the lid is only the outer edge side surface of the bent portion of the container and the outer edge side surface of the bent portion of the lid. Container with lid. 3. An annular bent portion having a hook-shaped cross section of a resin or paper-made lid (51) and an annular bent portion having a hook-shaped cross section directed outward from an edge of a resin or paper container (41). The outer peripheral side surface of the annular bent portion of the container has a large diameter at the lid entrance and is formed in a reverse taper of an angle θ1, and the outer peripheral side surface of the annular bent portion of the lid also has an inverse taper of an angle θ1. It is formed so that the edge side surface of the bent portion of the container and the edge side surface of the bent portion of the lid are slightly separated from each other,
The edge side surface (44) of the bent portion (42) of the container and the edge side surface (5) of the bent portion (52) of the lid fitted into the bent portion.
4) Either the annular engaging concave portion (46) or the annular engaging convex portion (56) having an arc diameter of a convex portion engaging with the annular engaging concave portion substantially equal to or different from that of the concave portion. Is provided so that the upper and lower corners of the concave portion and the convex portion are in contact with each other with two lines, and when the lid is covered with the container, the engaging concave portion and the engaging convex portion are pressed into contact with each other by the annular two lines. A sealed container with a lid. 4. The container according to claim 3, wherein an angle θ2 of a reverse taper is provided also on an edge side surface of the annular bent portion of the container and an edge side surface of the annular bent portion of the lid. A container with a closed lid as described in the above. 5. An annular bent portion having a hook-shaped cross section of a resin-made or paper-made lid (51) and an annular bent portion having a hook-shaped cross-section directed outward from an edge of the resin-made or paper-made container (41). The outer peripheral side surface of the annular bent portion of the container has a large diameter at the lid entrance and is formed in a reverse taper at an angle θ1, and the outer peripheral side surface of the annular bent portion of the lid also has an inverse angle θ1. It is formed in a tapered shape, the edge side of the bent portion of the container is perpendicular to the container bottom surface, and the gap between the edge of the bent portion of the lid and the edge side of the bent portion is reverse-tapered so that the inlet side of the container becomes larger. An annular engaging recess (46) is formed on the edge side surface (44) of the bent portion (42) of the container and the edge side surface (54) of the bent portion (52) of the lid fitted in the bent portion.
Alternatively, one of the annular engaging projections (56) having an arc diameter of the convex portion engaging with the annular engaging concave portion substantially the same as or different from the arc diameter of the concave portion is provided so that the upper and lower corners of the concave portion are convex. The lid and the lid are brought into contact with each other by two lines, and when the lid is covered with the container, the engaging concave portion and the engaging convex portion are brought into pressure contact with each other by annular two-line contact. container. 6. The side edge of the annular bent portion (42) of the container (41) is formed into a taper with a narrow angle of the inlet and the angle θ3, and the taper of the edge side surface of the annular bent portion of the lid (51) is the same. 6. The sealed container with a lid according to claim 5, wherein the angle θ4 is larger than the angle θ3 by a taper in the direction. 7. The fitting portion between the outer side surface of the annular bent portion of the container and the outer side surface of the annular bent portion of the lid is changed, and the annular engaging convex portion (58) on the outer edge side surface of the annular bent portion is formed. The container with a closed lid according to claim 5, wherein a lower portion of the outer peripheral side surface of the bent portion is a fitting portion. 8. The ring-shaped engaging projection is press-contacted by a ring-shaped line contacted by a line at an upper angle or a lower angle of the ring-shaped engaging recess. Container with closed lid.