JP3108990U - Food packaging container - Google Patents

Abstract

【Task】
To provide a food packaging container that is reliably sealed without leaking the moisture contained in the food contained in the container, and that can suppress the manufacturing cost of the container and is excellent in convenience.
[Solution]
The container 1 is composed of a main body 11 and a lid 21. The main body 11 is made of a soft resin, the lid 21 is made of a resin that is the same as or harder than the main body 11, and the upper part of the side plate 18 of the main body 11 has an inverted cross section. When the U-shaped receiving piece 12 is formed in an annular shape, a cover piece 22 having a reverse U-shaped cross section is formed in the one lid 21 in an annular shape, and the receiving piece 12 is attached when the lid 21 is attached to the main body 11. When the covering piece 22 is placed, the receiving piece 12 is elastically deformed by being pushed by the covering piece 22, and the receiving piece 12 and the covering piece 22 are brought into close contact with each other by the restoring force at this time, so that moisture leaks out in all situations. In addition, the shape of the container 1 is relatively simple and the manufacturing cost can be suppressed.
[Selection] Figure 1

Description

  The present invention relates to a food packaging container suitable for storage and sale of foods rich in moisture, represented by processed fishery products such as sea urchin and boiled sea bream and processed vegetables such as pickles.

Food products such as processed fishery products often contain a lot of moisture, and sealed containers are generally used to prevent moisture from leaking outside during transportation and sales to retail stores. Examples of the container include a glass bottle and a vinyl bag. For relatively expensive items such as seafood, a resin container is often used in consideration of appearance. This container is comprised from the main body for accommodating a foodstuff, and the lid | cover for closing the opening of the upper part of a main body, and the lid | cover also uses resin equivalent to a main body. In order to maintain the sealing property at the joint between the main body and the lid, measures such as attaching an adhesive tape or providing packing are taken. In addition, the specific structural example of such a container is shown by the following patent document.
JP 2001-80662 A JP 9-202352 A

  Even when the container using the technique of Patent Document 1 is used, if the gas is generated from the food with the passage of time or the internal pressure increases due to a change in temperature or atmospheric pressure, the sealing between the main body and the lid is broken. Moisture may leak out. In addition to the above-mentioned patent documents, there are containers that can maintain hermeticity. However, since the edge of the container has a complicated shape, the mold for manufacturing the container also becomes complicated. In order to maintain accuracy, the tolerance for the wear of the mold becomes strict, which increases the manufacturing cost. In addition, in order to improve the convenience of the container, it has a function to show that the inside is unopened at the time of sale, and a structure that can maintain the sealing property again after attaching the lid after purchasing the product and opening it once It is desirable.

  The present invention was developed based on these actual conditions, and the food packaging that is excellent in convenience that can maintain the airtightness without leaking the moisture of the food contained in the inside, and also can suppress the manufacturing cost of the container. The purpose is to provide containers.

The device according to claim 1, which solves the above problem, comprises a main body and a lid that covers an opening in the upper part of the main body.
On the upper part of the side plate of the main body, a receiving piece having an inverted U-shaped cross section composed of an inner plate, an outer plate and a joint plate is formed so as to surround the periphery of the main body,
One lid is formed with an inverted U-shaped cross section composed of an inner plate, an outer plate and a joint plate so as to surround the periphery of the lid,
The receiving piece formed on the main body is made of a soft resin having a restoring force, and the covering piece formed on the lid is made of a resin equivalent to or harder than the receiving piece,
The receiving piece is a food packaging container characterized in that the receiving piece is elastically deformed by pressing of a covering piece to be fitted, and both inner plates and outer plates are in close contact with each other.

  Although the shape of the food packaging container according to the present invention is not limited, it is composed of a main body for containing foodstuffs and a lid that covers the entire upper opening of the main body. It is based on the premise that the lid is harder or equivalent in hardness to the main body, and the lid is not assumed to be softer like a lunch box or storage container.

  The main body is surrounded by a side plate, and a receiving piece having an inverted U-shaped cross section is formed in an annular shape on the upper side of the side plate. This receiving piece connects the inner plate extending substantially vertically adjacent to the upper portion of the side surface, the outer plate arranged in parallel with a gap from the inner plate, and the upper portion of the inner plate and the outer plate. And a joint plate. On the other hand, a cover piece having an inverted U-shaped cross section is formed in an annular shape on the edge of the lid. This covering piece connects the inner plate that extends almost vertically adjacent to the edge of the lid, the outer plate that is arranged in parallel with a gap from the inner plate, and the upper portion of the inner plate and the outer plate. And a connecting plate.

  The receiving piece and the covering piece are formed to be a pair, and the covering piece is fitted into the receiving piece so that both are in close contact with each other. At this time, when the covering piece comes into contact with the receiving piece, the receiving piece is elastically deformed so that the inner plate and the outer plate are crushed, and with this restoring force, the covering piece is elastic so that the inner plate and the outer plate are spread. Deform. Therefore, both the inner plates and the outer plates are pressed against each other by a restoring force due to elastic deformation, the hermeticity is maintained by surface contact, and the lid does not naturally come off due to mutual friction.

  The inner plate and the outer plate constituting the receiving piece and the covering piece may be formed vertically downward, but at least the receiving piece of the receiving piece and the covering piece as in the device of claim 2. It is desirable that the inner plate and the outer plate that face each other are formed so as to spread toward the bottom. If comprised in this way, since a covering piece and a receiving piece will become a wedge shape, when both contact, it will press strongly and the improvement of the further sealing property can be anticipated. Further, according to the present invention, the upper part of the receiving piece is narrow and the lower part of the covering piece is widened, so that the receiving piece can be sandwiched between the covering pieces and the lid can be securely attached even if both positions are not strictly aligned.

  As a specific shape of the invention described in claim 2, as in the invention described in claim 3, at least the receiving piece on the main body side is made of a soft resin having a restoring force due to elastic deformation. The width is formed smaller than the opening width of the cover piece on the lid side, and the opening width of the cover piece is formed smaller than the entire width on the opening side of the receiving piece. What is characterized by being able to maintain hermeticity when a covering piece is fitted. Here, the width of the joint plate above the receiving piece refers to the distance between the upper end of the inner peripheral surface of the inner plate and the upper end of the outer peripheral surface of the outer plate. The opening width of the covering piece refers to the distance between the lower end of the outer peripheral surface of the inner plate and the lower end of the inner peripheral surface of the outer plate. The full width on the opening side of the receiving piece refers to the distance between the lower end of the inner peripheral surface of the inner plate and the lower end of the outer peripheral surface of the outer plate. By configuring in this way, the dimensional difference between the upper part of the receiving piece and the opening width of the covering piece becomes large, so that alignment when attaching the lid to the main body becomes easy, and elastic deformation occurs when the lid is attached to the main body. The receiving piece and the covering piece are brought into close contact with each other by the restoring force, and the sealing property can be reliably maintained.

  In addition, if it can be clearly shown that the container is unopened at the time of sale, the consumer's confidence is further improved. The invention according to claim 4 realizes this, and the outer peripheral surface of the outer plate of the lid is provided with a convex portion protruding outward, and one main body has a belt-like shape so as to surround the outer peripheral surface of the outer plate. A cover outer plate is inserted between the outer plate and the belt-like portion, and a concave portion that engages with the convex portion is provided on the inner peripheral surface of the belt-like portion, and the convex portion and the concave portion are engaged with each other. Secure the lid to the body with. By comprising in this way, the recessed part of a main body and the convex part of a lid | cover can engage, and a lid | cover cannot be isolate | separated, Therefore Sealability can be maintained reliably and it does not raise anxiety at the time of sale. Note that both the concave portion and the convex portion may be formed in an annular shape without being interrupted on the outer periphery of the container, or may be formed intermittently.

  When opening the container, it is desirable that it can be carried out by a simple operation without using a tool or the like. The invention described in claim 5 achieves this, and includes an opening means for separating the recess from the main body in order to remove the lid from the main body. As an example of the opening means, there is a structure in which a pulling handle that can be picked with a finger is formed on a part of the band-like part, and the pulling part is pulled to separate the band-like part from the main body. When the strip portion is separated by such means, the concave portion is also separated from the main body, so that the convex portion is opened and the lid can be removed. After that, when an external force is applied to the lid to release the sealing between the receiving piece and the covering piece, the food contained therein can be taken out.

  As in the invention described in claim 1, the receiving piece is formed in an annular shape on the upper part of the main body, and the covering piece is also formed in an annular shape on the lid, and the covering piece is held by the covering piece so that both are brought into close contact with each other. Since the surface of the receiving piece and the covering piece are in strong contact with each other, the moisture does not leak even when the internal pressure increases, and the lid does not loosen against vibrations. Can provide a high container. Further, the present invention utilizes elastic deformation of the main body and the lid, and can be sealed again after being opened once. In addition, both the main body and the lid have a simple shape in which the cross-sectional shape is a reverse U-shaped receiving piece and a covering piece formed at the periphery, and the tolerance for wear of the mold is increased. The shape is simple, and therefore the manufacturing cost of the container can be reduced.

  As in the invention described in claim 2, the inner plate and the outer plate are formed so as to widen away from each other toward the bottom, whereby the pressing between the receiving piece and the covering piece becomes stronger and the sealing performance is improved. In addition, the lid can be prevented from loosening due to severe vibration. The invention described in claim 3 shows a specific example of the shape of the invention described in claim 2, and can be easily aligned when the lid is attached to the main body, and after the lid is attached, the cover is put on. The piece wraps around the receiving piece and is pressed against each other by the elasticity of both, and high sealing performance can be maintained.

  When the belt-like portion is provided on the main body, the concave portion is provided on the inner periphery of the belt-like portion, and the pair of convex portions are provided on the lid to engage the both, The method makes it impossible to remove the lid, so that it can be clearly shown that the container is unopened, thereby further increasing the value of the container.

  By providing the opening means as in the device of the fifth aspect, the lid can be easily separated from the main body without using a tool or the like, and the convenience of the container is further improved.

  FIG. 1 shows an outline of the present invention, FIG. 1 (A) is a perspective view showing a schematic shape, and FIGS. 1 (B) and 1 (C) are AA end views. The container 1 is composed of a main body 11 for storing foods and the like, and a lid 21 covering the main body 11. The main body 11 has a bottom plate 17 extending horizontally, and a side plate 18 stands upright so as to surround it. At the upper part of the side plate 18, there are an inner plate 13 and an outer plate 14 arranged in the vertical direction, and a connecting plate 15 is connected between them, thereby forming a receiving piece 12 having a reverse U-shaped cross section. The receiving piece 12 is formed in an annular shape without a gap at the upper part of the side plate 18 and surrounds the opening of the main body 11. One lid 21 has a top plate 27 that extends horizontally to cover the opening of the main body 11, and a covering piece 22 that is paired with the receiving piece 12 is formed at the peripheral edge. The covering piece 22 is also composed of an inner plate 23, an outer plate 24, and a joint plate 25, has a reverse U-shaped cross section, and is formed in an annular shape so as to surround the top plate 27. When the lid 21 is attached to the main body 11, the covering piece 22 is brought close to the receiving piece 12 from above, the covering piece 22 is placed so as to surround the receiving piece 12, and both inner plates as shown in FIG. 13 and 23 and the outer plates 14 and 24 are brought into contact with each other to ensure sealing.

  Further, the belt-like portion 31 is disposed so as to surround the outer plate 14 of the main body 11, and the outer plate 14 and the belt-like portion 31 are connected to each other at the bottoms thereof, thereby forming a U-shaped cross section, The outer plate 24 of the lid 21 can be inserted between the plate 14 and the band-shaped portion 31. In the vicinity of the center of the inner peripheral surface of the belt-shaped portion 31, a concave portion 16 whose surface is scraped off is formed in an annular shape, and a convex portion protruding from the surface is formed on the outer peripheral surface of the outer plate 24 of the lid 21. 26 is formed in an annular shape, and when the lid 21 is attached to the main body 11, the concave portion 16 and the convex portion 26 are engaged as shown in FIG. 1C, so that the lid 21 does not come off naturally.

  FIG. 2 is a longitudinal end view showing in detail the principle of close contact between the main body 11 and the lid 21, and shows only the periphery of the receiving piece 12 and the covering piece 22. In the state of FIG. 2A, the main body 11 and the lid 21 are completely separated from each other, and both have a natural shape without receiving a force from the outside. The receiving piece 12 has a substantially U-shaped cross section formed by the inner plate 13, the outer plate 14, and the joint plate 15. However, the inner plate 13 and the outer plate 14 are not completely parallel, and the distance between the two decreases toward the bottom. It has become. The covering piece 22 also has a substantially U-shaped cross section formed by the inner plate 23, the outer plate 24, and the joint plate 25, and the inner plate 23 and the outer plate 24 are not completely parallel. Slightly away from the end. By configuring in this way, the width W1 of the joint plate 15 at the upper part of the receiving piece 12 (the distance between the upper end of the inner peripheral surface of the inner plate 13 and the upper end of the outer peripheral surface of the outer plate 14) and the opening at the lower part of the covering piece 22 There is a difference between the width W2 (the distance between the lower end of the outer peripheral surface of the inner plate 23 and the lower end of the inner peripheral surface of the outer plate 24), and the lid 21 can be attached smoothly.

  When the lid 21 is brought closer to the main body 11, the receiving piece 12 and the covering piece 22 begin to contact each other as shown in FIG. As a result, the receiving piece 12 is elastically deformed so that the full width W3 on the opening side (the distance between the lower end of the inner peripheral surface of the inner plate 13 and the lower end of the outer peripheral surface of the outer plate 14) becomes smaller. The covering piece 22 is elastically deformed by the restoring force of 12 so that W2 becomes large. When the lid 21 is further moved, W3 is further reduced as shown in FIG. 2C, and the convex portion 26 comes into contact with the belt-like portion 31 and enters the inside while pushing the belt-like portion 31 outward. Finally, as shown in FIG. 2D, the joint plate 15 of the receiving piece 12 and the joint plate 25 of the covering piece 22 come into contact with each other, and the attachment of the lid 21 is completed. At this time, W3 of the receiving piece 12 is smaller than the original, and W2 of the covering piece 22 is larger than the original, and the receiving piece 12 and the covering piece 22 are pressed against each other by the restoring force due to these deformations, Sealing is maintained by contact. At the same time, since the convex portion 26 is also engaged with the concave portion 16, the lid 21 cannot be easily removed.

  FIG. 3 shows an example of the opening means of the container 1, FIG. 3 (A) is a perspective view showing the structure, FIG. 3 (B) is a perspective view showing a state in the middle of opening, FIG. C) is an end view after opening. The convex portion 26 formed on the lid 21 is engaged with the concave portion 16 of the main body, so that the main body 11 and the lid 21 are integrated. As shown in FIG. In order to separate the upper half of 31, a puller 32 that functions as an opening means is formed. This puller 32 is integrated with the band-like part 31 above the recess 16, and when opening the container 1, the puller 32 is picked with a finger as shown in FIG. Pull out. The center of the belt-like portion 31 is locally thin due to the concave portion 16, and the upper portion of the belt-like portion 31 can be separated from the main body 11 using this as a cut line. FIG. 3C is an end view in a state where the upper portion of the belt-like portion 31 is completely separated. Since the convex portion 26 of the lid 21 is opened, it can be removed by lifting the edge of the lid 21 with a finger or the like.

  FIG. 4 shows another example of the opening means of the container 1, FIG. 4 (A) is a perspective view showing the structure, FIG. 4 (B) is a perspective view showing a state in the middle of opening, FIG. 4 (C) is a BB end view. As shown in FIG. 4 (A), a handle 33 that functions as an opening means is formed so as to protrude horizontally from the upper part of the band-shaped portion 31, and the handle 33 is moved downward as shown in FIG. 4 (B). When bent, it bends with the concave portion 16 as a fulcrum, and in this section, the convex portion 26 of the lid 21 is opened as shown in FIG. Even in this state, the concave portion 16 and the convex portion 26 are engaged at locations other than the handle 33, but when the lid 21 is lifted from the vicinity of the handle 33, the belt-shaped portion 31 is deformed and the previous engagement is released. The lid 21 can be removed. In many cases, after the handle 33 is bent, it is separated from the band-shaped portion 31 as shown in FIG.

  As the resin used for the main body 11, polypropylene, polyethylene, polystyrene (having high elasticity), which is expected to be elastically deformed and excellent in safety and handling, is suitable. The lid 21 is mainly made of a transparent resin so that the internal food can be seen from the outside, and polypropylene, polyethylene, polystyrene (high elasticity), etc. are suitable as in the case of the main body. In many cases, different resins are used, such as polypropylene for the main body 11 and polystyrene for the lid 21. In this case, a harder one is used for the lid 21.

  FIG. 5 shows another embodiment of the container according to the present invention. FIG. 5 (A) is a plan view, FIG. 5 (B) is a front view, and FIG. 5 (C) is a CC end surface. FIG. The structure of the receiving piece 12 and the covering piece 22 of the container 1 is the same as that depicted in FIG. 1 and the like, but the structure of the concave portion 16 and the convex portion 26 that fixes the main body 11 and the lid 21 is unique. It is a thing. The container 1 is square when viewed from above, but the corners are cut off obliquely, and the recesses 16 and the protrusions 26 for integrating the main body 11 and the lid 21 are provided at only four corners. In other places, the receiving piece 12 and the covering piece 22 are in close contact with each other. Of the four corners, one of the corners is formed with a handle 33 that can be bent downward and separated from the main body 11 when opened, and is drawn within a one-dot chain line circle in FIG. As shown, when the handle 33 is bent downward, the engagement between the concave portion 16 and the convex portion 26 formed on the lower side is released. When a finger is inserted here and the lid 21 is lifted, the surrounding belt-like portion 31 is elastically deformed, the engagement of the remaining three concave portions 16 and convex portions 26 is also eliminated, and the lid 21 can be removed. In addition, two grooves 35 that divide the belt-like portion 31 are formed on the lower side of the handle 33 so that it is not necessary to apply an excessive force when the handle 33 is folded for opening. In order to prevent the hand 33 from being bent unintentionally due to an impact during transportation, guards 34 formed so as to project the upper edge of the main body 11 are provided on the left and right sides of the handle 33.

  6 shows individual shapes of the main body 11 and the lid 21 of the container shown in FIG. 5. FIG. 6 (A) is the same composition as FIG. 5 (C), and the main body 11 and the lid 21 are separated. FIG. 6B is a bottom view of the lid 21, and FIG. 6C is a plan view of the main body 11. As shown in FIG. 6B, a cover piece 22 composed of an inner plate 23, an outer plate 24, and the like is formed in an annular shape on the back surface of the lid 21 along the outer peripheral edge. Convex portions 26 for engaging with the main body 11 are formed at four locations. As shown in FIG. 6C, the main body 11 has a total of four concave portions 16 formed on the inner peripheral surface of the belt-like portion 31, and a handle 33 used for opening at the corner portion. The belt-like portion 31 located below the handle 33 is separated from the surroundings by a groove 35.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the outline | summary of this invention, (A) is a perspective view which shows schematic shape, (B) is an AA end view in the state which isolate | separated the main body and the lid | cover, (C) is the main body and lid | cover integrated. It is an AA end elevation of the state which was done. 2A is a vertical end view showing in detail the principle of close contact between the main body and the lid, FIG. 3A is a state where the main body and the lid are separated, FIG. (D) is a state in which the main body and the lid are completely integrated. The form of the opening means of the container by this invention is shown, (A) is a perspective view which shows a structure, (B) is a perspective view which shows the state in the middle of opening, (C) separated the strip | belt-shaped part. It is an end view which shows the state after opening. Another embodiment of the container opening means according to the present invention is shown. (A) is a perspective view showing the structure, (B) is a perspective view showing a state in the middle of opening, and (C) is B- FIG. The container based on this invention shows another example of a form, (A) is this top view, (B) is a front view, (C) is CC end view. FIG. 6A shows the individual shapes of the main body and the lid of the container shown in FIG. 5, and FIG. 6A is an end view of the state in which the main body and the lid are separated in the same composition as FIG. Is a bottom view of the lid, and FIG. 6C is a plan view of the main body.

Explanation of symbols

1 Container 11 Body 12 Receiving Piece 13 Inner Plate (Main Body Side)
14 Outer plate (Body side)
15 Joint plate (main body side)
16 Concave portion 17 Bottom plate 18 Side plate 21 Lid 22 Cover piece 23 Inner plate (lid side)
24 Outer plate (lid side)
25 Joint plate (lid side)
26 Convex part 27 Top plate 31 Strip part 32 Pull handle (opening means)
33 Handle (opening means)
34 Guard 35 Groove

Claims (5)

It is composed of a main body (11) and a lid (21) that covers the upper opening of the main body (11),
On the upper part of the side plate (18) of the main body (11), a receiving piece (12) having an inverted U-shaped cross section composed of an inner plate (13), an outer plate (14) and a joint plate (15) is provided. ) Around the circumference of
One lid (21) has an inverted U-shaped cross section (22) composed of an inner plate (23), an outer plate (24), and a joint plate (25), around the lid (21). Formed to surround,
The receiving piece (12) formed on the main body (11) is made of a soft resin having a restoring force, and the covering piece (22) formed on the lid (21) is made of a resin equivalent to or harder than the receiving piece (12). As material,
The receiving piece (12) is configured to be elastically deformed by pressing of the covering piece (22) to be fitted, so that both inner plates (13, 23) and outer plates (14, 24) are in close contact with each other. A container for food packaging.   Of the receiving piece (12) and the covering piece (22), at least the receiving piece (12) moves away as the facing inner plates (13, 23) and outer plates (14, 24) move downward. 2. The food packaging container according to claim 1, wherein the food packaging container is formed to be widened toward the end.   At least the receiving piece (12) on the main body (11) side is made of a soft resin having a restoring force due to elastic deformation, and the width (W1) of the joint plate (15) on the receiving piece (12) is set on the lid (21) side. The opening width (W2) of the covering piece (22) is smaller than the opening width (W2) of the covering piece (22), and the opening width (W2) of the covering piece (22) is smaller than the entire width (W3) on the opening side of the receiving piece (12). The container for food packaging according to claim 2, wherein the container is formed and can maintain hermeticity when the covering piece (22) of the lid (21) is fitted into the receiving piece (12) of the main body (11). .   The outer surface of the outer plate (24) of the lid (21) is provided with a convex portion (26) projecting outward, and one main body (11) surrounds the outer surface of the outer plate (14). A band-shaped portion (31) is formed on the outer plate (24) and the outer plate (24) of the lid (21) is inserted between the outer plate (14) and the band-shaped portion (31). 4. The food packaging container according to claim 1, further comprising a concave portion (16) that engages with the convex portion (26). 5. Food packaging according to claim 4, further comprising an opening means (32, 33) for separating the recess (16) from the main body (11) for removing the lid (21) from the main body (11). Container.

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