JP3028731B2 - 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 boiled juice, in a supermarket or a store.

[0002]

Although BACKGROUND ART container with plastic lid are arranged in the shop are known of various shapes, the container 101 as in for example FIG. 18 thereof, rim in consideration of strength Is attached to an annular bent portion 101a having a hook-shaped cross section outwardly.
The annular bent portion 102a is fitted. This mating
As shown in a 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. 20 , 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]

The contact surface is weak and the entire circumferences are not always in close contact with each other on the bevel-shaped fitting surface of the former FIG. 19 described in the prior art. The latter figure 2
In the case of the cross-sectional shape of 0 , the lid 102 of the lidded container and the container 10
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 present invention is made of resin or paper.
An annular flexion of a hook-shaped section outward from the rim of the container (41)
Hook-shaped cross section of resin or paper lid (51) in curved part (42)
A container with a lid covering the annular bent portion of the container, wherein the container
Of the bend of the lip and the lip of the bend of the lid
The gap between the two sides or one side so that the container entrance side is large
Side of the container, the side of the edge of the bent portion (42) of the container
(44) and the bent portion (5) of the lid fitted in the bent portion.
The annular engaging recess (46) is provided on the rim side surface (54) of (2).
Any one of the annular engaging protrusions (56) that engages with the annular engaging recess.
When the lid is covered with the container on one side, the engaging concave portion and the engaging convex portion
Part is provided so as to be pressed against by an annular linear contact, and the lid is bent.
The tip of the annular engaging projection on the side of the lip side
An annular engaging recess on the rim side of the bent portion of the container with a convex corner
Ring contact with the lower part of the part in an annular line contact at two or more positions
It is a touch .

Further, the bent portion of the container is formed in a flange shape without an outer side surface.
A cross section, and the bent part of the lid covered by this is also the outer edge side
It is a container with a faceless lid .

[0009] The edge of the resin or paper container (61)
The resin is applied to the annular bend (62) with a hook-shaped cross section
Bent part of the hook-shaped cross-section of the lid made of paper or paper (51)
A container with a lid to be covered, on the edge side of the bent portion of the container
The gap between the surface and the edge side of the bent part of the lid is the container entrance side
Incline both sides or one side so that is larger,
Fit to the bent portion rim side surface (64) or the bent portion of the container
What is on the side (54) on the rim side of the bent part (52) of the lid
One of the engagement projections (5) so that the top surface contacts the corresponding surface.
7) When the lid is covered with the container,
It is provided in an annular shape so as to press against the corresponding surface with an annular linear contact.
The annular engaging projection on the side of the lip of the lid
(57) forming a tip annular convex corner portion (58) earlier than
A ring formed by the engaging projections on the rim side surface of the annular bent portion of the container;
To make a circular line contact below the line contact part
In this case, an annular line contact with high surface pressure is performed .

[0010] The edge of the resin or paper container (61)
Resin or paper on the annular bend of the flange-shaped cross section
Cover the annular bent portion of the flange-shaped cross-section
Container with a lid, the mouth edge side surface of the bent portion narrows
It is formed in the first taper of its own, and the edge side surface of the bent part is
Formed in a second taper in the same direction at an angle larger than the taper
Then, an annular engaging projection (57) is formed in the second taper, and
Is made to have an annular line contact with the first taper by the first taper, and the lid is annularly folded.
Prior to the annular engaging projection (57) on the side of the edge of the bent portion
Forming a tip annular convex corner (58) to form an annular bend in the container;
From the annular line contact portion by the engaging projection on the edge side surface of
Ring contact at the lower part of the
To make a circular ring contact .

In addition, the outer side surface of the bent portion of the container and the bent portion
The outer peripheral side surface of the barbed portion is removed .

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

According to the container of the first aspect, the lid is attached to the container .
Pressing the annular bent portion 42 and the annular bent portion 52 vertically
The outer side 43 of the bent portion and the outside of the bent portion
At the same time the reverse taper of the edge side surface 53 is engaged,
The side surface 44 and the bent portion edge side side surface 54 are provided.
The annular engaging concave portion 46 and the annular engaging convex portion 56
Of the engaging concave portion and the engaging convex portion.
At the position with circular line contact to keep the lid and container airtight.
One. If you put the lid on the container and push it in, it will bend and bend
Each part is engaged on the outer edge side surface or the flange part is in close contact
The annular engaging projection on the side of the rim of the bent portion is bent.
Mating with the annular engaging recess on the side of the rim side of the
Make an annular line contact. In addition, the edge side of the bent part
The convex portion at the tip makes an annular line contact with
Positive contact keeps the container airtight.

[0021] The container with a lid according to claim 2 is the lid according to claim 1.
A container with a lid excluding both the container and the lid side surface
It is a container, and when you put the lid on the container and push it in, the collar is in close contact,
The annular engaging projection on the edge side of the bent portion is the edge of the bent portion
Shoulder and convex of annular engaging concave on the side surface or valley and convex of concave
The container is hermetically sealed by one- or two-line ring contact at the top of the part.
Closure is maintained.

In the container with a lid according to the third aspect , a lid 51 is provided in the container 61.
Over the bent portion 62 and the bent portion 52 of the hook-shaped cross section.
When it is fitted by pressing down, it folds with the outer peripheral side surface 63 of the bent portion.
When the reverse taper of the outer peripheral side surface 53 of the bent portion is engaged,
A ring of the edge side surface 54 of the bent portion on the bent portion edge side surface 64
The distal end of the convex engagement portion 57 is press-contacted by a line contact in an annular shape to
Separation is prevented, and the lid and the container are kept airtight. More containers
Place the lid on the bent part of the hook-shaped cross section of
The bent part is fitted on the outer edge side, and the edge side is
Annular at two positions on the side of the rim side: an annular engaging projection and a tip convex corner
High airtightness is maintained by double sealing due to line contact.

In the container with a lid according to claim 4 , the lid is pushed into the container.
The bend of the bent part is in close contact with the bend of the bend, and the mouth of the bend is
An annular engaging projection is crimped to the first taper, which is narrower
The airtightness is maintained at a high surface pressure in line contact with. Also the hook on the container
Bend by placing the lid on the bent part of the cross section and pushing it in
Part is fitted on the outer edge side, and the edge side is the edge of the bent part
A line is annularly formed on the side surface at two positions: an annular engagement convex portion and a tip convex corner portion.
High airtightness is maintained by the double seal upon contact. Also hook
In the case of a bent part and a bent part, it is folded by the close contact of both parts
The side of the rim side has an annular mouth with a tapered shape where the bend is narrow
High hermeticity is maintained by double sealing with edge line contact.

According to a fifth aspect of the present invention, there is provided the container with a lid according to the fourth aspect.
A container with a lid, excluding both the container and the outer peripheral side surface of the lid
It is a container with a lid, and the lid is pushed into the container and bent to the bent part
An annular engagement triangle at the edge of the bent part that closely contacts the flange
The peaks (convex portions) are in line contact with the tapered surface in an annular line, resulting in high surface pressure.
The airtightness of the container is maintained.

[0025]

[0026]

[0027]

[0028]

[0029]

[0030]

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The common features of the embodiments will be described below with reference to the drawings. As shown in FIG. 1, the container 1 made of a thermoplastic resin by sheet molding is formed in a truncated pyramid shape with a tapered opening and an opening on the mouth side so that the container 1 can be easily detached from the mold. Therefore, an annular bent portion 2 having a hook-shaped cross section is formed outward. Outer circumference 3 of this bent portion 2
Is a reverse taper having a large diameter on the upper side (lid entrance), and the rim side surface 4 of the bent portion 2 is formed in a reverse taper with a small diameter on the upper side (lid entrance), and both the taper angles θ1 and θ2 are 1
The angle is in the range of 5 ° to 5 °, preferably 2 ° to 3 °.

At the lower end of a part of the outer peripheral side surface 3 of the bent portion, a tongue piece 6 is formed, which projects rightward and laterally, and is substantially parallel to a diagonal line of the container 1 not including the tongue piece. 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 with 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. Further, the bent portion 12 is provided with an annular flattening portion 10 at the intersection of the upper surface 15 and the edge side surface 14.

A tongue 16 is formed on the lid 11 at a position corresponding to the tongue 6 when covered with the container 1 so as to protrude 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.

[0035]

To remove the contents of the container 1, one of the tongue pieces, for example, 8 is grasped with the left hand and the other tongue piece 18 is grasped 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.

[0037]

[0038]

[0039]

[0040]

[0041]

[0042]

[0043]

[0044] Example 1 to Example 3soDifferent parts succumb
Only the bends and bends are the same.
Description is omitted. Example 1 FIG.3, Figure4As shown in the figure, the outer edge of the annular bend with a hook-shaped cross section
Reverse taper on the side surface 43 and the side surface 53 on the outer edge side of the annular bent portion
The fitting is performed with θ1. Hereinafter, this mating is referred to as a
wear. Edge side of annular bent portion 42 of hook-shaped cross section of container 41
An annular engaging recess 46 is provided on the side surface 44 and a lid 51 is provided.
The annular engaging concave portion 46 is formed on the edge side surface 54 of the bent portion 52.
Is provided with an annular engaging convex portion 56 which engages with the groove.

The annular engaging projection 56 is formed in the annular engaging recess 4.
The shoulder portion 6 is contacted by two lines or one line, or one line between the peak of the convex portion and the valley of the concave portion, so that the edge side surface 44 of the bent portion 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.

Embodiment A first 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;
Figure 5 which is a modification of FIG. 4 which is a recess, the different points will be described with FIG. 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 formed on a tapered surface having an angle θ2 at which the gap becomes larger on the inlet side of the container 41, and an annular engaging convex portion 56 that engages with the annular engaging concave portion 46 is provided on the side surface 54. The annular engaging projection 56 is in contact with the upper or lower corner of the annular engaging recess 46, the line at the top of the projection and the valley of the recess, or the upper and lower corners. The annular engaging projection 56 may have any shape of a circular arc, a triangular mountain, or a trapezoid. 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.

[0048]

[0049]

[0050]

[0051]

[0052] In Figure 6, illustrating a place different from the FIG. 5 Lee-type fitting. Edge side surface 5 of bent portion of lid 51
Also at the lower end annular convex corner portion 58 of the annular engaging convex portion 56 formed on the tapered surface of No. 4, an annular line contact below the annular engaging concave portion 46 of the bent side edge side surface 44 of the hook-shaped cross section of the container 41. It is to let. Therefore, this type of contact is made by adding one line or two lines of the annular engaging concave portion 46 and the annular engaging convex portion 56 to the side surface 44 and one line of the tip annular convex corner portion 58 to make a total of two or three circular lines. It is intended to be in contact. Therefore, hermeticity is almost perfect. It is to be noted that, instead of the a-shaped fitting of the present example, a b-shaped fitting or a c-shaped fitting may be freely used.

FIG. 5 is a view in which the outer peripheral side surface and the engaging portion in FIG. 4 are removed, and when the flange portions are overlapped, an annular line contact with a high surface pressure is made at two or three positions.

[0054]

[0055]

[0056]

In FIG . 6, the inlet side opens the annular bent portion rim side surface 64 of the container 61 so as to be formed into a taper, and the annular bent portion of the lid 51 has the rim side surface 54 formed substantially perpendicular to the bottom surface. I have. The outer side surface of the bent portion of the container and the outer side surface of the bent portion of the lid are formed in an a-shape, and the side surface of the lip is formed to have a tapered opening on the inlet side. Engaging projection 57
Is formed in such a size as to be in line contact with the rim side surface 64 of the annular bent portion of the container 61 in an annular manner and to be in line contact with strong surface pressure. In this example, the outer edge side surfaces of the bent portion and the bent portion are a-shaped fitting, but may be freely shaped into a b-shaped fitting or a c-shaped fitting.

In FIG. 7 , the side face of the bent portion in FIG. 6 is perpendicular to the bottom surface of the container, and the bent side face of the bent portion is formed to have a taper in a direction in which the gap on the inlet side becomes larger.

In FIG. 10 , the annular bent portion 62 of the container is shown.
Mouth edge side 6 mouth edge side 64 of the bending portion in FIG. 6
The taper angle is opposite to that of 4, that is, the inlet side of the container 61 is narrowed, and the taper angle is θ5. Along with this, the lid 51
The edge side surface taper angle θ6 of the bent portion 52 is θ5 <
It is increased so as to be θ6. It is to be noted that, instead of the a-shaped fitting of the present embodiment, a b-shaped fitting or a c-shaped fitting may be freely used.

[0060]

[0061]

[0062]

[0063] Example In the second 8, the deformation of the FIG. The inlet side opens the edge side surface 64 of the annular bent portion 62 having the hook-shaped cross section of the container 61 with respect to the tapered surface of the container.
The lower part of the annular engaging convex portion 57 of the rim side surface 54 which is substantially perpendicular to the bottom surface of the annular bent portion is extended, and further annular line contact is made at the distal annular convex corner portion 58 to make line contact at two positions. It is a thing. It is to be noted that, instead of the a-shaped fitting of the present example, a b-shaped fitting or a c-shaped fitting may be freely used.

[0064] In Example 3 FIG 12 is a variant of Figure 10 of Lee-type fitting. The lower end of the annular bent portion 51 of the lid 51 is extended below the annular engaging convex portion on the edge side surface of the annular bent portion 51 so that the annular distal annular convex corner portion is brought into line contact with the edge side surface 64 of the bent portion 62 of the container 61 by an annular line. Line contact is made at two positions with the engaging projection 57. It should be noted that, instead of the a-shaped fitting of the present example, a b-shaped fitting or a c-shaped fitting may be freely performed.

Also, in the case of the a-shaped, b-shaped or c-shaped fitting, the edge side surface 64 of the annular bent portion of the container is perpendicular to the bottom surface, and the annular bent portion edge side surface 54 of the lid is in the direction in which the gap with the container inlet side is increased. It is also possible to make linear contact at two positions of the annular engaging convex portion 57 and the annular tip annular convex corner portion as the taper. Higher airtightness is maintained by two-point line contact.

In FIG. 10 , both the outer side surface of the annular bent portion of the container 61 and the outer side surface of the annular bent portion of the lid 51 in FIG. 9 are removed to make the hook-shaped cross section a flange-shaped cross section. . And, when the flanges are overlapped, they are formed to have a size such that a strong annular line contact can be obtained at two positions, and a size in which the lid side is generally larger in diameter than the container side.

[0067]

[0068]

[0069]

[0070]

[0071]

[0072]

In FIG. 14 , the edge side surface 54 of the annular bent portion 52 of the lid 51 is extended to form an annular tip convex corner portion 5.
8 also has an annular line contact below the annular engaging convex portion 67 on the rim side surface 64 of the bent portion 62 of the container 61 and makes contact at two positions with the annular engaging convex portion. It is to be noted that, instead of the a-shaped fitting of the present example, a b-shaped fitting or a c-shaped fitting may be freely used.

In FIG. 15 , the edge side surface 54 of the annular bent portion of the lid 51 is extended so that its tip annular convex corner 58
Are brought into contact with the annular line below the annular engaging projection 67 at two positions. It should be noted that, instead of the a-shaped fitting of the present embodiment, a b-shaped fitting or a c-shaped fitting may be freely used.

In FIG. 16 , the edge side surface 54 of the lid is extended to make an annular line contact at an annular tip convex corner portion 58 and to make two-position contact with the annular engaging convex portion. It should be noted that, instead of the a-shaped fitting of the present embodiment, a b-shaped fitting or a c-shaped fitting may be freely used.

In FIG. 17 , the bent portion and the bent portion are brought into close contact with each other at the flange portion except for the outer edge side surface. It is made to the size to be.

[0077]

Since the present invention is configured as described above, the following effects can be obtained. Claim 1 is an annular bending
Mouth on the lip side of the lip and the lip on the lip side of the annular bent part of the lid
An annular engagement convex portion and an annular engagement concave portion fitted to each other on the line side surface.
Formed, two or one corners of the recess or a valley
Because of the high surface pressure annular line contact at one position
Hermeticity is maintained. The ring line contact position increases by one position and becomes 2
Position or 3 positions, so the effect is more certain
The hermeticity of the container is maintained .

A second aspect of the present invention is an annular bent portion having a flange-shaped cross section of the container.
When the lid and the annular bent part of the flange section of the lid are overlapped
The annular engaging concave portion and the annular engaging convex portion are two lines or 1 at the corner of the concave portion.
Since a line with a high surface pressure makes a line contact with a line or a valley,
The tightness of the container is maintained. In addition, it was made into a collar, so production
Easy.

The third , fourth, and fifth aspects of the present invention relate to the edge of the annular bent portion.
At the tip of the annular engaging projection on the side surface, the
Ring contact is made at two positions because ring contact is made to the surface
As a result, the container is more reliably sealed. Also collar-shaped cross section
It is easy to manufacture.

[0080]

[0081]

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[Brief description of the drawings]

FIG. 1 shows a closed type lid for explaining common parts of an embodiment of the present invention .
(A) is a front view, and (b) is a side sectional view.
is there.

FIG. 2 is an illustration of a closed type lid for explaining a common part of an embodiment of the present invention .
(A) is a front view and (b) is a side sectional view.
You.

FIG. 3 shows a lid and a container for explaining a common part of the embodiment of the present invention .
It is a side sectional view.

FIG. 4 is an enlarged view of a fitting portion between a lid and a container.

FIG. 5 is an enlarged view of a joint portion between the lid and the container in which the side of the rim side is inclined.
It is a large map.

FIG. 6 is a line contact position further increased than that of the first embodiment shown in FIG. 4;
FIG. 5 is an enlarged view of a joined portion between the two-position contact type lid and the container.

FIG. 7 is a two-position contact having a flange-shaped cross section in the first embodiment of FIG.
FIG. 4 is an enlarged view of a joint between the lid and the container.

[FIG. 8] A lid and a container which can be freely opened by opening a side entrance of a bent portion .
It is an enlarged view of the fitting part of FIG.

FIG. 9 shows a gap between the side of the edge of the bent portion and the inlet of the container.
Enlarged view of the fitting part between the lid and the container, which is inclined in the direction of enlargement
It is.

FIG. 10: Both sides on the rim side are narrower on the container entrance side.
It is an enlarged view of the fitting part of the lid and container inclined in the direction.

FIG. 11 is a second embodiment, and further differs from the first embodiment shown in FIG. 8;
Fitting of the lid and container 2 position contact Sawakatachi added a line contact located
It is an enlarged view of a part.

FIG. 12 is a third embodiment, in which a line contact position is added.
It is an enlarged view of the fitting part of a lid and a container of a position contact type.

FIG. 13 shows two positions in which the third embodiment shown in FIG.
It is an enlarged view of the fitting part of a contact-type lid and a container.

FIG. 14: Opposite sides of the inlet opening both lip sides
Two-position contact that is tilted in the direction
FIG. 4 is an enlarged view of a fitting portion between the lid and the container.

FIG. 15 shows a two-position contact type lid to which a line contact position is added, and a container.
It is an enlarged view of the fitting part of a container.

FIG. 16 shows a two-position contact type lid and a line to which a line contact position is added.
It is an enlarged view of the fitting part of a container.

FIG. 17: Fitting of lid and container of two-position contact type with flange-shaped cross section
It is an enlarged view of a joint part.

FIG. 18 is a side sectional view of a conventional container with a lid.

FIG. 19 is an enlarged view of a fitting portion of FIG . 18;

20 is an enlarged view of a fitting portion different from that of FIG.
You.

[Explanation of symbols]

1,21,41,61 Container 11,31,51 Lid 2,22,42,62 Circular bend 12,32,52 Circular bend 3,23 Bend outer edge side surface 4,24,44,64 Bend Edge side surface 5, 25 Bent portion upper surface 9 Annular convex corner portion 10 Annular flattened portion 13, 33 Outer edge side surface of bent portion 14, 34, 54 Edge portion side surface of bent portion 15, 35 Upper surface of bent portion 26, 56 Annular engagement concave portion 36 , 36,46,36,37,57,67 annular engagement projection

Continued on the front page (56) References JP-A-2-45363 (JP, A) JP-A-3-651 (JP, A) JP-A-3-32070 (JP, U) JP-A-63-28635 (JP) , U) Japanese Utility Model Hei 1-91757 (JP, U) Japanese Utility Model Showa 64-6254 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 39/00-55/16

Claims (5)

(57) [Claims] (1 ) at the edge of a resin or paper container (41);
The resin is attached to the annular bent part (42) of the hook-shaped section
Alternatively, cover the annular bent portion of the hook-shaped cross section of the paper lid (51).
A container with a lid to be crowned, the side surface of the bent portion of the container on the rim side.
And the gap between the side of the lip of the lid and the edge of the lid
Incline both sides or one side so that
Edge side surface (44) of the bent portion (42) of the container and the bent portion
Side surface (5) of the bent portion (52) of the lid fitted to the
4) engage the annular engaging recess (46) or the annular engaging recess;
One of the annular engaging projections (56)
When the crown is covered, the engaging concave portion and the engaging convex portion are connected by an annular linear contact.
Provided so as to be pressed against each other, the ring on the side of the lip side of the bent part of the lid
A tip annular convex corner is further provided at the end of the
An annular line contact is made below the annular engagement recess on the side of the lip on the edge of the bend.
A container with a closed lid that has been contacted to make an annular line contact at two or more positions . 2. A flange-shaped cut having no outer peripheral side surface at a bent portion of a container.
And the bent part of the lid to be covered by this
The hermetically sealed container according to claim 1, wherein the container has no lid. 3. An edge of a resin or paper container (61).
The resin is attached to the annular bent part (62) with a hook-shaped cross section
Alternatively, cover the annular bent portion of the hook-shaped cross section of the paper lid (51).
A container with a lid to be crowned, the side surface of the bent portion of the container on the rim side.
And the gap between the side of the lip of the lid and the edge of the lid
Incline both sides or one side so that
Fit to the bent side of the bowl (64) or the bent part
Of the lip side surface (54) of the bent part (52) of the lid
One of the engaging projections (5) so that the top surface is in contact with the corresponding surface.
7) When the lid is covered with the container,
It is provided in an annular shape so as to press against the corresponding surface with an annular linear contact.
The annular engaging projection on the side of the lip of the lid
(57) forming a tip annular convex corner portion (58) earlier than
A ring formed by the engaging projections on the rim side surface of the annular bent portion of the container;
To make a circular line contact below the line contact part
A container with a closed lid that makes an annular line contact with a high surface pressure in . 4. A method according to claim 4, wherein the container is made of resin or paper.
Resin or paper quality at the annular bend of the flange section
Causing the annular bent portion of the flange-shaped cross section of the manufactured lid (51) to be crowned
A container with a lid, where the mouth side surface of the bend narrows the mouth and wins
It is formed in the first taper of the hand, and the edge side surface of the bent portion is the front
Formed on the second taper in the same direction at an angle larger than the above taper
Then, an annular engaging projection (57) is formed in the second taper, and
Is made to have an annular line contact with the first taper by the first taper, and the lid is annularly folded.
Prior to the annular engaging projection (57) on the side of the edge of the bent portion
Forming a tip annular convex corner (58) to form an annular bend in the container;
From the annular line contact portion by the engaging projection on the edge side surface of
Ring contact at the lower part of the
A container with a closed lid that makes a circular ring contact . 5. An outer peripheral side surface of a bent portion of a container and bending.
The outer peripheral side surface of the portion is removed.
A container with a closed lid as described in the above .