JP2013139266A - Synthetic resin container and stacked body of the container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin container which can easily and surely be picked up one by one, allows smooth packaging work, does not cause bulkiness even if stacked, and has a structure suitable for storage, transportation and the packaging work.SOLUTION: The synthetic resin container 10 is formed in such a manner that: a flank 12 is protruded in an outer direction in which an edge 80 including a small-diameter stacked part 20 which is substantially circular arc in cross section at the peripheral edge of an opening 18 intersects with the flank; and a clearance 34 interposed between a substantially-circular arc part of the upper stacked part 20 and a substantially-circular arc part of the lower stacked part 20 is formed when inserting the flanks 12 of a plurality of the synthetic resin containers 10, and the stacked part of the upper synthetic resin container 10 is located substantially right above the stacked part 20 of the lower synthetic resin container 10, and stacked thereon.

Description

  The present invention relates to a synthetic resin container and a stack of the containers, and in particular, a plastic film or a sheet made of a synthetic resin used for packaging various foods that are displayed and sold in, for example, a food store in a supermarket or a convenience store. The present invention relates to containers and stacked bodies obtained by stacking them.

  17 and 18 show an example of a conventional container used for packaging various foods such as sugar beet and fruits. The container 1010 has a pan-like shape in which a side wall 1050 constituting the trunk portion 1012 is raised to an appropriate height around the bottom 1014. After the food is put, the opening 1018 of the container 1010 is transparently stretched. It is covered with a film, and the storage portion 1016 is sealed and packaged.

Japanese Patent No. 3277363 JP 2002-362568 A

The operation of packaging food is often performed manually by humans, for example, empty containers 1010 stacked on one side of an operator, and a tray on which food is placed on the other side, respectively. An operator wearing sanitary gloves picks and supports the uppermost container 1010 stacked with one hand, holds the food stored with the other hand, and transfers it to the storage part 1016 of the container 1010. Yes.
In such an operation, as shown in FIGS. 17 and 18, the empty container 1010 is overlapped by fitting the upper container 1010 into the opening 1018 of the lower container 1010. It is not easy to pick and take out the edge portion 1080 of the uppermost container from the stack, and it may take time to take out the container 1010, such as separating a plurality of pieces together. Thus, it is desirable to have a structure in which only one uppermost container of the stacked containers can be easily taken out.

A synthetic resin sheet-made synthetic resin container (hereinafter simply abbreviated as a container) 1010 is provided in order to make it easier to pick one when a plurality of the containers are stacked in a plurality of locations on the side wall 1050 constituting the trunk portion 1012. For example, four steps 1051 serving as spacers are formed at a plurality of locations on the side wall 1050 in order to allow the flange portions 1040 to be stacked at a predetermined interval. A step 1051 formed at the upper right side or the center of each side of the four side walls 1050 widens the space between the stacked upper container and the lower container collar 1040.
However, if a large number of containers 1010 in which the stepped portion 1051 is formed are stacked, it becomes bulky, so that many cannot be stacked in order to improve workability.

  Moreover, the stepped portions 1051 formed at a plurality of locations on the side wall 1050 of the container 1010 are arranged in a stacked container so that the flange portions are stacked at a predetermined interval when a large number of the containers are stacked. For example, when the stepped portion 1051 is formed in four places, four types of containers are required. Thus, there is a problem that a plurality of container molds are required.

  In view of such problems, the present invention allows a container made of synthetic resin used for packaging of food or the like to be picked easily and reliably one by one so that the packaging work can be performed smoothly and stacked. It becomes a subject to become a structure suitable for storage, transportation, and packaging work without becoming bulky.

A synthetic resin container according to the present invention is a synthetic resin container having a trunk part and a bottom part formed by molding a synthetic resin sheet, wherein the trunk part has a substantially arc-shaped cross section with a small radius around the periphery of the opening. The stacking portion protrudes outwardly intersecting the trunk portion, and the stacking portion bulges toward the opposite side of the bottom portion, and inserts the trunk portions of a plurality of synthetic resin containers. And when the stack part of the upper synthetic resin container is positioned and positioned almost directly above the stack part of the lower synthetic resin container, the edge of the upper synthetic resin container and the lower synthetic resin are stacked. The stacked portion of the container is in contact with the linear or narrow surface at the contact portion formed in the lower portion, and the lower surface and the lower composite of the stacked portion of the synthetic resin container above and above the contact portion. Between the top of the stacking parts of the resin container, A synthetic resin container formed so as to form a gap interposed between a substantially arc of the upper stack part and a substantially arc of the lower stack part for separating the container and the lower synthetic resin container is there.
A synthetic resin container according to a second aspect of the present invention is a synthetic resin container having a trunk portion and a bottom portion formed by molding a synthetic resin sheet, and the barrel portion is formed on the periphery of the opening portion with a synthetic resin. An edge portion including a substantially arc-shaped stack portion having a radius equal to or less than five times the thickness of the sheet is projected outwardly intersecting the body portion, and the stack portion is opposite to the bottom portion. When it is swelled toward the side, the body portions of a plurality of synthetic resin containers are inserted, and the upper synthetic resin container stack portion is positioned substantially directly above the lower synthetic resin container stack portion. In addition, the edge portion of the upper synthetic resin container and the stacked portion of the lower synthetic resin container are in contact with each other in the form of a line or a narrow surface at the contact portion formed in the lower portion, and contact Upper and lower synthetic resin stacks of synthetic resin containers above and below Between the upper surface of the stacking portion of the container and the upper arc of the upper stacking portion and the lower arc of the lower stacking portion for separating the upper synthetic resin container and the lower synthetic resin container. It is a synthetic resin container formed so as to form a void portion.
In the synthetic resin container according to claim 3 of the present invention, the synthetic resin sheet is a synthetic resin container according to claim 2, wherein the thickness (t) satisfies the following formula.
0.2mm ≦ t ≦ 0.4mm
In the synthetic resin container according to claim 4 of the present invention, the stacked portion is provided with a side wall connection portion provided continuously on the trunk portion side and a collar portion connection portion provided continuously on the side opposite to the trunk portion side. A synthetic resin container according to any one of claims 1 to 3.
In the synthetic resin container according to claim 5 of the present invention, the stacked portions are formed in symmetrical shapes at both ends of the opposite side edges of the body portion, respectively. A synthetic resin container according to claim 4.
The synthetic resin container according to claim 6 of the present invention is the synthetic resin container according to any one of claims 1 to 5, wherein the stacked portion is partially formed between regions having flat portions. is there.
A stack of synthetic resin containers according to claim 7 of the present invention is a synthetic resin container having a trunk portion and a bottom portion formed by molding a synthetic resin sheet, wherein the trunk portion is formed at the periphery of the opening. An edge including a stack portion having a substantially arc-shaped cross section with a small radius is projected outwardly intersecting the body portion, and the stack portion is bulged toward the opposite side of the bottom portion, and a plurality of composites When the body portion of the plastic container is inserted and the stack portion of the upper synthetic resin container is positioned substantially directly above the stack portion of the lower synthetic resin container, the upper synthetic resin container is stacked. And the stacked portion of the lower synthetic resin container are in contact with a linear or narrow surface at the lower portion of the abutting portion, and the upper portion of the upper synthetic resin container is above the abutting portion. Between the lower surface of the stacking section and the upper surface of the stacking section of the lower synthetic resin container In order to separate the upper synthetic resin container and the lower synthetic resin container, a gap is formed between the substantially arc of the upper stacking portion and the approximately arc of the lower stacking portion. The plurality of containers are brought into contact with each other at the abutting portions of the edges of the plurality of synthetic resin containers and stacked, and the body portions of the plurality of synthetic resin containers are inserted and stacked. This is a stack of synthetic resin containers configured so that the containers can be separated and taken out.
A synthetic resin container according to an eighth aspect of the present invention is a synthetic resin container having a trunk portion and a bottom portion formed by molding a synthetic resin sheet, wherein the trunk portion is formed on the periphery of the opening portion. An edge portion including a stack portion having a substantially arc-shaped cross section having a radius equal to or less than five times the thickness of the sheet is projected outward and intersects the trunk portion, and the stack portion is defined as a bottom portion. Inflated toward the opposite side, the body portions of the plurality of synthetic resin containers were inserted, and the stack portion of the upper synthetic resin container was positioned substantially directly above the stack portion of the lower synthetic resin container. Sometimes, the edge of the upper synthetic resin container and the stacked part of the lower synthetic resin container are in contact with each other in a linear or narrow plane at the abutting portion formed in the lower part, and Synthetic tree below and below the stack of synthetic resin containers above and above the contact Between the upper arc of the upper stack and the lower arc of the lower stack for separating the upper synthetic resin container and the lower synthetic resin container between the upper surface of the upper stack of the container A plurality of containers formed so as to form intervening voids are stacked in contact with each other at the abutting portions of the edges of the plurality of synthetic resin containers, and the trunks of the plurality of synthetic resin containers are inserted. It is a stack of synthetic resin containers that are stacked and configured so that each synthetic resin container can be easily separated and taken out from above.
In the stack of synthetic resin containers according to claim 9 of the present invention, the synthetic resin sheet is a stack of synthetic resin containers according to claim 8 whose thickness (t) satisfies the following formula. .
0.2mm ≦ t ≦ 0.4mm
In the stack of synthetic resin containers according to claim 10 of the present invention, the abutting portion is a part of the stack portion of the lower container or the ridge connection portion and / or the side wall connection portion connected to the stack portion. It is constituted by a part, and is constituted by a part of the stacking part of the upper container or a part of the saddle connection part and / or the side wall connection part connected to the stacking part and / or the boundary between the saddle connection part and the saddle part. Furthermore, it is a stack of synthetic resin containers according to claim 7 or claim 8.
In the stack of synthetic resin containers according to claim 11 of the present invention, the gap is formed between the stack of the upper container and the stack of the lower container. It is a stack of synthetic resin containers according to claim 7 or 8 formed in a shape.

According to invention of Claim 1, it is a synthetic resin container which has a trunk | drum and a bottom formed by shape | molding a synthetic resin sheet | seat, Comprising: The said trunk | drum is a cross-sectional substantially circular arc shape of a small radius in the periphery of an opening part. An edge portion including the stacking portion is projected outwardly intersecting the trunk portion, the stacking portion is bulged toward the opposite side of the bottom portion, and the trunk portions of the plurality of synthetic resin containers are inserted and When stacking the upper synthetic resin container with the stacking section of the upper synthetic resin container positioned almost directly above the stacking section of the lower synthetic resin container, the edge of the upper synthetic resin container and the lower synthetic resin container are stacked. The stacked portion of the container is in contact with the linear or narrow surface at the contact portion formed in the lower portion, and the lower surface and the lower synthetic resin of the stacked portion of the synthetic resin container above and above the contact portion The upper synthetic resin container and the lower Since it is formed so as to form a gap between the substantially arc of the upper stacking part and the approximately arc of the lower stacking part for separating the resin container, it is used for packaging of foods etc. Synthetic resin containers can be easily and reliably picked one by one so that they can be packaged smoothly, and without being bulky even when stacked, a synthetic resin container suitable for storage, transportation and packaging operations. Can be obtained.
According to invention of Claim 2, it is a synthetic resin container which has a trunk | drum and a bottom formed by shape | molding a synthetic resin sheet | seat, Comprising: The said trunk | drum of the thickness of a synthetic resin sheet | seat is the periphery of an opening part. An edge portion including a stack portion having a substantially arc-shaped cross section with a radius equal to or less than 5 times is projected outwardly intersecting the trunk portion, and the stack portion swells toward the opposite side of the bottom portion. When the stacks of the plurality of synthetic resin containers were inserted and the stacks of the upper synthetic resin containers were positioned substantially directly above the stacks of the lower synthetic resin containers, the stacks were stacked. The edge part of the upper synthetic resin container and the stack part of the lower synthetic resin container are in contact with each other in a linear or narrow plane at the contact part formed at the lower part, and above the contact part. The bottom of the stack of plastic resin containers and the stack of the lower plastic container A gap is formed between the upper surface and the lower synthetic resin container to separate the upper synthetic resin container and the lower synthetic resin container from each other. Since it is formed so that it can be easily and reliably picked one by one in a synthetic resin container used for packaging foods, etc., it can be packaged smoothly, and it will be bulky even if stacked. Therefore, a synthetic resin container suitable for storage, transportation and packaging can be obtained.
According to the invention of claim 3, since the thickness (t) of the synthetic resin sheet satisfies the following formula, the synthetic resin containers used for packaging foods and the like are easily and reliably picked one by one. It is suitable for storage, transportation and packaging operations without being bulky even when stacked, so that the packaging operation can be performed smoothly.
0.2mm ≦ t ≦ 0.4mm
According to invention of Claim 4, since the said stacking | stacking part is continuously provided with the side wall connection part in the trunk | drum side, and the collar part connection part is provided in the opposite side to the trunk | drum side, the intensity | strength of a trunk | drum is improved. I can give you.
According to invention of Claim 5, since the said stacking | stacking part is each formed in the edge by the side of the opening part of the opposite side edge of a trunk | drum by each symmetrical shape, the synthesis | combination used for packaging of foodstuffs etc. Resin containers are easily and reliably picked one by one so that the packaging operation can be performed smoothly, and are not bulky even when stacked, and are suitable for storage, transportation, and packaging operations.
According to invention of Claim 6, since the said stacking part is partially formed between the area | regions which have a flat part, the intensity | strength of a trunk | drum and an edge part can be raised.
According to invention of Claim 7, it is a synthetic resin container which has a trunk | drum and a bottom formed by shape | molding a synthetic resin sheet | seat, Comprising: The said trunk | drum is a cross-sectional substantially circular arc shape of a small radius in the periphery of an opening part. The edge including the stacking part protrudes outwards intersecting the body part, and the stacking part bulges toward the opposite side of the bottom part, and the body parts of a plurality of synthetic resin containers are inserted. And when the stack part of the upper synthetic resin container is positioned and positioned almost directly above the stack part of the lower synthetic resin container, the edge of the upper synthetic resin container and the lower synthetic resin are stacked. The stacked portion of the container is in contact with the linear or narrow surface at the contact portion formed in the lower portion, and the lower surface and the lower composite of the stacked portion of the synthetic resin container above and above the contact portion. Between the upper surface of the stack of resin containers, the upper synthetic resin container and the lower A plurality of containers are formed by forming a plurality of containers formed so as to form a gap portion interposed between a substantially arc of the upper stack portion and a substantially arc of the lower stack portion for separating the plastic container. It is configured so that the abutting portion of the resin container is brought into contact with each other and stacked, and the body portions of a plurality of synthetic resin containers are inserted and stacked so that each synthetic resin container can be easily separated and taken out from above. Therefore, in a synthetic resin container used for packaging food, etc., the containers can be easily and reliably picked one by one so that the packaging operation can be performed smoothly and stored without being bulky. A stack of synthetic resin containers suitable for transportation and packaging operations can be obtained.
According to invention of Claim 8, it is a synthetic resin container which has a trunk | drum and a bottom part formed by shape | molding a synthetic resin sheet | seat, Comprising: The said trunk | drum of the thickness of a synthetic resin sheet | seat is the periphery of an opening part. An edge portion including a stack portion having a substantially arc-shaped cross section having a radius equal to or less than 5 times is projected outwardly intersecting the trunk portion, and the stack portion is directed to the side opposite to the bottom portion. It is swelled and stacked when the body of the plurality of synthetic resin containers is inserted and the upper synthetic resin container stack part is positioned almost directly above the lower synthetic resin container stack part. The edge portion of the upper synthetic resin container and the stacked portion of the lower synthetic resin container are in contact with each other in a linear or narrow surface at the contact portion formed at the lower portion, and above the contact portion. Lower surface of upper plastic resin container stack and lower synthetic resin container stack Between the upper surface, a gap is formed between the upper arc of the upper stack and the lower arc of the lower stack to separate the upper and lower plastic containers. A plurality of containers formed so as to be in contact with each other at the abutting portions of the plurality of synthetic resin containers and stacked, and the trunks of the plurality of synthetic resin containers are inserted and stacked, so that Since each synthetic resin container can be separated and removed from the container, it can be easily and reliably picked one by one in a synthetic resin container used for packaging foods, etc. In addition, a stack of synthetic resin containers suitable for storage, transportation, and packaging operations can be obtained without increasing bulk even when stacked.
According to the invention of claim 9, since the thickness (t) of the synthetic resin sheet satisfies the following formula, the synthetic resin containers used for packaging foods etc. are easily and reliably picked one by one. It is suitable for storage, transportation and packaging operations without being bulky even when stacked, so that the packaging operation can be performed smoothly.
0.2mm ≦ t ≦ 0.4mm
According to the invention of claim 10, in the stack of synthetic resin containers, the abutting portion is a part of the stack portion of the lower container or the ridge connection portion and / or the side wall connection portion connected to the stack portion. It is constituted by a part, and is constituted by a part of the stacking part of the upper container or a part of the saddle connection part and / or the side wall connection part connected to the stacking part and / or the boundary between the saddle connection part and the saddle part. Therefore, each container can be slid and removed without causing a vacuum between the stacked containers.
According to the eleventh aspect of the present invention, the gap is formed between the stacked portion of the upper container and the stacked portion of the lower container, and is formed in a substantially crescent-shaped or substantially bell-shaped cross section. Each container can be separated and taken out without generating a vacuum between the containers.

  The above-described object, other objects, features, and advantages of the present invention will become more apparent from the following description of the best mode for carrying out the invention with reference to the drawings.

It is a perspective view solution figure of the container of one embodiment of the present invention. It is a top view solution figure of the container shown in FIG. It is a front view solution figure of the container shown in FIG. It is a side view solution figure of the container shown in FIG. It is a bottom view solution figure of the container shown in FIG. It is FIG. 2A-A sectional illustration solution. It is sectional drawing solution figure which shows the state which accumulated the container. It is the B section enlarged illustration figure shown to FIG. 6B. FIG. 2 is an enlarged illustrative view of a cross section of FIG. 2A′-A ′. FIG. 2 is an illustrative sectional view showing a main part of the container shown in FIG. 1. FIG. 2C is an illustrative sectional view taken along the line C-C. It is an illustration figure which shows the process at the time of shaping | molding of a container. FIG. 9 is an illustrative plan view of a concave mold of the mold shown in FIG. 8. It is a cross-sectional view solution figure of the stacked body of the container which is other embodiment of this invention. FIG. 11 is an enlarged illustrative view of an essential part of the AA cross section of the stacked body of containers illustrated in FIG. 10. 10A'-A 'It is an enlarged illustrative view of the principal part of the AA cross section of the stack of containers shown. It is a cross-sectional solution figure which shows the principal part of the container shown in FIG. It is a cross-sectional view solution figure of the stacked body of the container which is other embodiment of this invention. FIG. 13 is an enlarged illustrative view of an essential part of the AA cross section of the stack of containers shown in FIG. 12. 12A'-A 'It is an enlarged illustrative view of the principal part of the AA cross section of the stack of containers shown. FIG. 13 is an illustrative sectional view showing the main part of the container shown in FIG. 12. It is a cross-sectional view solution figure of the stacked body of the container which is other embodiment of this invention. FIG. 15 is an enlarged illustrative view of an essential part of the AA cross section of the stack of containers shown in FIG. 14. 14A'-A 'It is an enlarged illustrative view of the principal part of the AA cross section of the stack of containers shown. FIG. 15 is an illustrative sectional view showing the main part of the container shown in FIG. 14. It is explanatory drawing of a container. It is a side view solution figure of the state which accumulated the conventional container. It is a cross-sectional solution figure of the state which accumulated the conventional container.

A synthetic resin container for packaging food according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of a container according to an embodiment of the present invention, FIG. 2 is a plan view of the container shown in FIG. 1, and FIG. 3 is a front view of the container shown in FIG. 4 is a side view of the container shown in FIG. 1, FIG. 5 is a bottom view of the container shown in FIG. 1, FIG. 6A is a cross-sectional view of FIG. 2A-A, and FIG. 6C is an enlarged view of a portion B shown in FIG. 6B, FIG. 6D is an enlarged view of a cross section of FIG. 2A'-A ', and FIG. 6E is an illustration of FIG. FIG. 7 is a cross-sectional schematic view showing a main part of the container, FIG. 7 is a cross-sectional schematic view of FIG. 2C-C, and FIG. 8 is an illustrative view showing a process at the time of molding the container.

The container 10 is a top open type container having a body portion 12 and a bottom portion 14 constituting a product housing recess, which is formed by expanding a synthetic resin sheet such as a thermoplastic plastic as a basic shape.
The synthetic resin sheet material used in the present embodiment is polyethylene terephthalate (commonly abbreviated as A-PET or PET), but is not limited to this, and synthetic resin sheets such as polypropylene, polycarbonate, and polystyrene are used. May be used.

A synthetic resin container 10 according to an embodiment of the present invention has a short side and a long side whose four corners are curved at an appropriate height while expanding upward around the bottom 14 having a substantially rectangular shape with arcs at the four corners. The body portion 12 serving as a side wall is raised to define a storage portion 16, the upper edge portion of the body portion 12 serving as a side wall bulges upward, and the outer edge is folded downward to form a deep dish shape. Is formed.
The body portion 12 is provided with an edge portion 80 including a stacking portion 20 and a flange portion 40 having a small-radius cross-section in an outer periphery that intersects the body portion 12 at the periphery of the opening portion 18. Yes.

  The stacking portion 20 bulges toward the opposite side of the bottom portion 14, the body portions 12 of the plurality of synthetic resin containers 10 are inserted, and the stacking portion 20 of the upper synthetic resin container 10 is made of the lower synthetic resin. When the stack 10 is positioned almost directly above the stacking portion 20 of the container 10 and the original shape before stacking is maintained, the edge 80 of the upper synthetic resin container 10 and the lower synthetic resin are stacked. The stacked portion 20 of the container 10 is in contact with a linear or narrow surface at an inner contact portion 30 and an outer contact portion 32 formed at the lower portion. The stacked portion 20 is above the inner contact portion 30 and the outer contact portion 32, and the lower surface of the stacked synthetic resin container 10 and the stacked portion 20 of the lower synthetic resin container 10 are stacked. Between the upper synthetic resin container 10 and the lower synthetic resin container 10 between the upper arc of the upper stack 20 and the lower arc of the lower stack 20. It forms so that the space | gap part 34 to be formed.

In this specification, the container 10 of the above, as shown in FIG. 6D, a plurality of synthetic resin container 10 ₁ Insert the barrel 12 and the synthetic resin container 10 ₂ of the stack 20 above the lower synthesis when stacked is positioned substantially directly above the stack 20 of the resin vessel 10, refers to a container 10 ₁ that is loaded at the top, the container 10 below the cylinders of a plurality of synthetic resin container 10 when the stack portion 20 of the synthetic resin container 10 of the top section 12 merge and stacked by positioning substantially directly above the synthetic resin container 10 ₂ of the stacking portion 20 of the lower, of the container 10 on the top Refers to the lower second container 10 _2, which in turn becomes the upper container 10 _{1 with} respect to the third container 10 stacked below it, and 3 with respect to the second upper container 10. The second container 10 becomes the lower container 10 ₂ .
Similarly, the third container 10, next to the container 10 _first above for the fourth container 10 stacked thereunder third container 10 to the fourth vessel 10 is below the container top 10 ₂

The trunk portion 12 includes a stack portion 20 having a substantially arc-shaped cross section having a radius equal to or less than five times the thickness (t) of the synthetic resin sheet over the entire periphery of the periphery of the opening 18. It protrudes outward in a direction that intersects with.
In the state where the stacking part 20 is expanded toward the side opposite to the bottom part 14 and the body parts 12 of the plurality of synthetic resin containers 10 are inserted and stacked, the original shape before stacking is maintained. The stacked portion 20 of the upper synthetic resin container 10 and the stacked portion 20 of the lower synthetic resin container 10 are linear or narrow at the inner contact portion 30 and the outer contact portion 32 formed at the lower portion. Touch the surface. The stacked portion 20 is above the inner contact portion 30 and the outer contact portion 32, and the lower surface of the stacked synthetic resin container 10 and the stacked portion 20 of the lower synthetic resin container 10 are stacked. The upper synthetic resin container 10 and the lower synthetic resin container 10 are formed so as to form a crescent-shaped or substantially bell-shaped gap 34 for separating the upper synthetic resin container 10 and the lower synthetic resin container 10.
The thickness (t) of the synthetic resin sheet satisfies the following formula.
0.2mm ≦ t ≦ 0.4mm
When the thickness (t) of the synthetic resin sheet is less than 0.2 mm, there is a problem with the shape retention of the container 10, and when it exceeds 0.4 mm, there is a problem with moldability and economy.
The stacked portion 20 is formed symmetrically on the front side and the far side opposite to the edge 80 and symmetrically formed on the left side and the right short side of the edge 80 facing each other.

The stacked portion 20 is bulged toward the opposite side of the bottom portion 14, and includes a top portion 22, an inner portion 24 that continues to the inside of the top portion 22, and an outer portion 26 that continues to the outside of the top portion 22.
The top portion 22, the inner portion 24, and the outer portion 26 are integrated to form a stacked portion 20 having a substantially semi-circular cross section or a substantially arc-shaped cross section.
The lengths between the lower end of the inner portion 24 and the center O of the semicircular arc, between the lower end of the outer portion 26 and the center O of the semicircular arc, and between the center of the top portion 22 and the center O of the semicircular arc are: It has a length equal to or less than 5 times the thickness (t) of the synthetic resin sheet.

The stacked portion 20 is connected to the side wall connecting portion 28 extending in the tangential direction of the stacked portion 20 following the inner portion 24, and connected to the ridge connecting portion 38 extending in the tangential direction of the stacked portion 20 following the outer portion 26.
The side wall connection portion 28 and the heel connection portion 38 are each composed of a planar plate facing each other with the stacked portion 20 interposed therebetween. As shown in FIG. 6E, the side wall connection portion 28 and the flange connection portion 38 are formed in a tapered shape that widens toward the storage portion 16. Further, the side wall connection portion 28 and the flange connection portion 38 may be formed vertically as shown in FIGS. 15 (A), 15 (B), and 15 (C).
The upper end of the side wall connecting portion 28 is connected to the lower end of the inner portion 24 of the stacked portion 20, and the lower end is connected to the upper end of the trunk portion 12.
The upper end of the flange connection portion 38 is connected to the lower end of the outer portion 26 of the stacked portion 20, and the lower end thereof is connected to the inner end of the flange portion 40.
The side wall connecting portion 28 has a planar shape integrated with a side wall 50 in a region where the rib 60 described later is not formed, and is configured as a planar region having a linear shape or a small area.

The lower end of the inner part 24 and the lower end of the outer part 26 are located slightly above the horizontal line passing through the center O of the semicircular arc constituting the stacked part 20, and the connecting region between the inner part 24 and the side wall connecting part 28 and The connecting region between the outer portion 26 and the heel connecting portion 38 is formed at a position slightly higher than the horizontal line passing through the center O of the semicircular arc constituting the stacked portion 20.
The lower end of the inner portion 24, the lower end of the outer portion 26, the connecting region between the inner portion 24 and the side wall connecting portion 28, and the connecting region between the outer portion 26 and the hook connecting portion 38 are the center O of the semicircular arc constituting the stacked portion 20. , And does not rise above the height of more than half of the radius (r) of the stacked portion 20 from the horizontal line passing through the center O of the semicircular arc constituting the stacked portion 20.
The central angles (θ ₁ and θ ₂ shown in FIG. 6E) formed between the radial line connecting the lower end of the inner part 24 and the lower end of the outer part 26 and the center O and the horizontal line passing through the center O are as follows: It is 45 degrees or less. In this embodiment, the central angles (shown as θ ₁ and θ ₂ in FIG. 6E) are formed at 20 to 30 degrees.
The stacking unit 20 has a center O and a position having an angle (a center angle of 45 degrees or less) that is higher than a horizontal line passing through the center O of a half circle or semicircular arc of the circumference constituting the stacking unit 20. It is formed in a sector shape formed by connecting lines.
Note that, in the stacked portion 20 having a substantially semicircular cross section, the horizontal line connecting the lower end of the inner portion 24 and the lower end of the outer portion 26 passes through the center O of the semicircular arc, and the perpendicular passing through the center of the top portion 22 is the center O of the semicircular arc. You may comprise so that it may pass, ie, a cross-sectional substantially semicircular arc shape.

When the containers 10 are stacked, the connecting region between the side wall connecting portion 28 and the body portion 12 of the upper container 10 constitutes the inner contact portion 30, and the heel connecting portion 38 and the heel portion 40 of the upper container 10 The connecting region constitutes the outer abutting portion 32 when the containers 10 are stacked.
The connecting region between the inner portion 24 of the lower container 10 and the side wall connecting portion 28 constitutes an inner contact portion 30 when the containers 10 are stacked, and the outer portion 26 of the lower container 10 and the hook connecting portion. The connection region with 38 forms the outer abutting portion 32 when the containers 10 are stacked.
The distance between the inner contact portion 30 and the outer contact portion 32 is a length corresponding to approximately twice the radius (r) of the stacked portion 20 corresponding to the thickness (t) of the synthetic resin sheet or slightly less than that. Have a short length. Specifically, it has a length obtained by subtracting twice the thickness (t) of the synthetic resin sheet.

  It is sufficient that at least one of the contact portions of the upper container 10 and the lower container 10 stacked, that is, the outer contact portion 32 is formed. That is, the abutting portion is constituted by a part of the stacking part 20 of the lower container 10 or a part of the heel connection part 38 and / or the side wall connection part 28 connected to the stacking part 20. A part of the stacked part 20 or a part of the heel connecting part 38 and / or the side wall connecting part 28 connected to the stacked part 20 and / or a boundary between the heel connecting part 38 and the heel part 40 are configured.

The stacked portions 20 are formed in symmetrical shapes at both ends of the opposite side edges of the body portion 12 on the opening 18 side.
The stacked portion 20 is formed symmetrically on the front side and the far side opposite to the edge 80 and symmetrically formed on the left side and the right short side of the edge 80 facing each other.

The body portion 12 includes a side wall 50 extending upward from the bottom portion 14 toward the diagonally outer side.
The side wall 50 includes a front side long side wall 52 and a far side long side wall 54 facing the front side long side wall 52, and the front side long side wall 52 and the far side long side wall 54 are formed symmetrically. ing. The longitudinal side wall 52 on the near side and the longitudinal side wall 54 on the far side are formed in a tapered shape so that the angle therebetween increases as it goes upward.
Further, the side wall 50 includes a left side wall 56 connecting the left end of the front side long side wall 52 and the far side long side wall 54 and a right side connecting the right side end of the front side long side wall 52 and the far side long side wall 54. The left side wall 56 and the right side wall 58 are formed symmetrically. The left side wall 56 and the right side wall 58 are formed in a taper shape so that the angle therebetween increases toward the top.
The front side long side wall 52 and the far side long side wall 54 have a taper angle of about 12 degrees, and the left side wall 56 and the right side wall 58 have a taper angle of about 12 degrees.

The body portion 12 is provided with an edge 80 around the entire periphery of the opening 18 at the end of the opening 18, and a stacked portion 20 is formed on a part of the edge 80.
The stacked portion 20 is formed at the edge 80 in the region of the longitudinal side wall 52 on the near side and the longitudinal side wall 54 on the far side.
The stacked portion 20 in the region of the longitudinal side wall 52 on the near side and the longitudinal side wall 54 on the far side is between the first ribs 62 of the three strips, between the first ribs 62 and the third ribs 66, and at the top of the first ribs 62. Are formed continuously.
In addition, the stacked portion 20 is formed at the edge 80 in the region of the left side wall 56 and the right side wall 58.
The stacked portion 20 in the region of the left side wall 56 and the right side wall 58 is formed between two flat portions 82 which are divided into the near side and the far side.
The edge portion 80 is configured to increase the strength of the four corner portions by forming wide flat portions 82 in the regions of the left side wall 56 and the right side wall 58 at the four corner portions (four corner portions). . That is, the stacked portion 20 is formed between the four flat portions 82 on the long side and the short side.

The edge portion 80 has a flange portion 40 that protrudes from the outer peripheral edge on the side opposite to the storage portion 16.
The flange portion 40 is provided to protrude outwardly so as to surround the body portion 12 over the entire periphery of the body portion 12 on the outer peripheral edge opposite to the body portion 12 side. Specifically, a collar 40 that projects from the outer peripheral edge on the side opposite to the body 12 side is connected to the collar connecting portion 38. The collar portion 40 is substantially parallel to the bottom portion 14 and extends outwardly intersecting the body portion 12 in the horizontal direction.
The collar portion 40 is configured to increase the strength against the compressive force applied in the horizontal direction with respect to the trunk portion 12 (from the near side to the far side, from the far side to the near side, from the left side to the right side, and from the right side to the left side). ing.

The body portion 12 is provided with strip-like or streak-like ribs 60 extending in the vertical direction at appropriate intervals along the circumferential direction.
The first rib 62 and the second rib 64 arranged on the four sides of the body portion 12 (the longitudinal side wall 52 on the near side, the longitudinal side wall 54 on the far side, the left side wall 56 and the right side wall 58) are corner portions (corner portions). In the meantime, it is formed of a tapered band-shaped recess that protrudes toward the storage portion 16 inside the container and tapers as it goes upward.
The first rib 62 and the second rib 64 are connected to the lower end of the stacked portion 20 at the uppermost end.
The first ribs 62 formed on the longitudinal side wall 52 on the near side and the longitudinal side wall 54 on the far side are pear-shaped as a whole when viewed from the front (rear view), are round at the bottom portion 14, and reach the opening 18 of the trunk portion 12. The boundary line between the two strips is substantially linear, and the interval therebetween is configured to become narrower as it reaches the opening 18. Three first ribs 62 are formed on each of the longitudinal side wall 52 on the near side and the longitudinal side wall 54 on the far side.
The second rib 64 formed on the left side wall 56 and the right side wall 58 has a pear shape as a whole when viewed from the front (rear view), is round at the bottom portion 14, and the boundary between the two strips reaching the opening 18 of the trunk portion 12 is It is substantially linear, and is configured such that the interval therebetween becomes narrower as it reaches the opening 18. Two second ribs 64 are formed on each of the left side wall 56 and the right side wall 58.

Longitudinal side wall 52 and left side wall 56 on the near side, front side long side wall 52 and right side wall 58, longitudinal side wall 54 and left side wall 56 on the far side, and longitudinal side wall 54 and right side wall 58 on the far side intersect with each other. The portion 70 is provided with a third rib 66 having a narrower width than the first rib 62 and the second rib 64.
The third rib 66 is formed of a tapered belt-shaped concave portion having an L-shaped cross section that protrudes inward of the container and tapers as it goes upward.
Specifically, the third ribs 66 arranged at the four corners of the body 12 are formed at two corners (corners) extending along a substantially 90 ° arc and projecting inward from the container. The inner side of the line is recessed toward the storage portion 16 side. The third rib 66 is formed at an appropriate interval from the first rib 62 and the second rib 64.

Since the container 10 of the present embodiment formed in this way is provided with the flange 40 protruding outward from the body part 12, when taking out only the uppermost container 10 from the bundle of containers 10 stacked in multiple stages. In addition, the container 10 can be smoothly taken out from above the container 10.
In addition, when the contents are stored in the container 10, if the container 10 is put on one palm and the container 10 is gripped, the thumb and index finger are engaged with the collar 40 arranged on the four sides of the body 12. Thus, the container 10 can be stably supported, and the container 10 can be prevented from slipping and tilting in the hand or falling from the hand during the storing operation.

In addition, the shape of the illustrated container is an example, and the present invention can be applied to a container having an appropriate shape. If the container has a size that can be placed on a hand and a depth that can be grasped on the hand, It is particularly effective for support. In addition, the ribs protruding inward of the container and the ribs protruding outward of the container can be formed in appropriate numbers and lengths with protruding widths that can be hooked with fingers.
According to the present invention, even when containers are stacked in multiple stages, the container 10 can be easily taken out by placing a finger on the collar part 40 formed on the body part 12 of the container 10, and the taken-out container 10 can be securely and hand-held. Supports stably and can perform packaging work smoothly.

The container 10 according to the present invention is used as a stacked body in which a plurality of containers 10 are stacked so that they can be easily separated.
A stack of synthetic resin containers 10 is formed by molding a synthetic resin sheet, and a synthetic resin container 10 having a trunk portion 12 and a bottom portion 14, and a trunk portion of a lower container 10 on a trunk portion 12 of an upper container 10. 12 and stacked.

The trunk portion 12 of the stacked container 10 is provided on the periphery of the opening 18 with the edge 80 facing outward, and a small radius cross section or a cross section of a small radius on a part of the edge 80. A substantially arcuate stacking portion 20 is formed.
In the stacked container 10, the stacked portion 20 is swelled toward the side opposite to the bottom portion 14, the trunk portions 12 of the plurality of synthetic resin containers 10 are inserted, and the stacked portion of the upper synthetic resin containers 10 is inserted. When the stack 20 is positioned substantially directly above the stacking portion 20 of the lower synthetic resin container 10, the edge of the upper synthetic resin container 10 is stacked in a state where the original shape before stacking is maintained. The portion 80 and the stacked portion 20 of the lower synthetic resin container 10 are in contact with each other in a linear or narrow plane at the inner contact portion 30 and the outer contact portion 32 formed at the lower portion, and the inner contact portion. 30 and between the lower surface of the stacked portion 20 of the upper synthetic resin container 10 and the upper surface of the stacked portion 20 of the lower synthetic resin container 10 above the outer abutting portion 32 and the upper synthetic resin container 10 Lower plastic container 1 It is formed so as to form a gap portion 34 interposed between the semi-circular arc or arc semicircular arc or arc and below the stack portion 20 of the stacking portion 20 of the upper for separating and.
The stacked body of containers 10 is formed by bringing a plurality of containers 10 into contact with each other at the inner abutting portion 30 and the outer abutting portion 32 of the edge 80 of the plurality of synthetic resin containers 10, and a plurality of synthetic resin products. The body portion 12 of the container 10 is inserted and stacked, so that each synthetic resin container 10 can be easily separated and taken out from above.
The thickness (t) of the synthetic resin sheet satisfies the following formula.
0.2mm ≦ t ≦ 0.4mm
When the thickness (t) of the synthetic resin sheet is less than 0.2 mm, there is a problem with the shape retention of the container 10, and when it exceeds 0.4 mm, there is a problem with moldability and economy.
The stacked portion 20 is formed symmetrically on the front side and the far side opposite to the edge 80 and symmetrically formed on the left side and the right short side of the edge 80 facing each other.

A stack of synthetic resin containers 10 is formed by molding a synthetic resin sheet, and a synthetic resin container 10 having a trunk portion 12 and a bottom portion 14, and a bottom portion 14 of an upper container 10 and a bottom portion 14 of a lower container 10. Are stacked by being inserted into the body 12 of the lower container 10 and stacked on the body 12 of the lower container 10.
The body portion 12 of the container 10 projects outwardly from the periphery of the opening 18 with a substantially arc-shaped stacking portion 20 having a radius equal to or less than five times the thickness of the synthetic resin sheet. Has been.
In the container 10, the stacking portion 20 is swelled toward the side opposite to the bottom portion 14, the trunk portions 12 of the plurality of synthetic resin containers 10 are inserted, and the stacking portion 20 of the upper synthetic resin container 10 is placed below. When the plastic resin container 10 is stacked and positioned almost directly above the stacked portion 20, the edge 80 and the bottom of the stacked synthetic resin container 10 are maintained while maintaining the original shape before the stacking. The stacked portion 20 of the synthetic resin container 10 is in contact with the inner contact portion 30 and the outer contact portion 32 formed in the lower portion in a linear or narrow plane shape, and the inner contact portion 30 and the outer contact portion 30 are in contact with each other. The upper synthetic resin container 10 and the lower synthetic resin are disposed between the lower surface of the stacked portion 20 of the upper synthetic resin container 10 and the upper surface of the stacked portion 20 of the lower synthetic resin container 10 above the contact portion 32. To separate the container 10 It is formed so as to form a gap portion 34 interposed between the semi-circular arc or arc semicircular arc or arc and below the stack portion 20 of the stacking portion 20 on the.
The stacked body of containers 10 is formed by bringing a plurality of containers 10 into contact with each other at the inner abutting portion 30 and the outer abutting portion 32 of the edge 80 of the plurality of synthetic resin containers 10, and a plurality of synthetic resin products. The body portion 12 of the container 10 is inserted and stacked, so that each synthetic resin container 10 can be easily separated and taken out from above.
The thickness (t) of the synthetic resin sheet satisfies the following formula.
0.2mm ≦ t ≦ 0.4mm
When the thickness (t) of the synthetic resin sheet is less than 0.2 mm, there is a problem with the shape retention of the container 10, and when it exceeds 0.4 mm, there is a problem with moldability and economy.
The stacked portion 20 is formed symmetrically on the front side and the far side opposite to the edge 80 and symmetrically formed on the left side and the right short side of the edge 80 facing each other.

The edge 80 of the upper container 10 and the edge 80 of the lower container 10 are stacked, the stack 20 of the upper container 10 and the stack 20 of the lower container 10 are stacked, and the upper container 10 The collar part 40 and the collar part 40 of the lower container 10 are stacked at an appropriate interval.
In the stacked body of the containers 10, the edge 80 of the upper container 10 and the edge 80 of the lower container 10 are in contact with each other at the inner contact portion 30 and the outer contact portion 32.

When the containers 10 are stacked, the connecting region between the side wall connecting portion 28 and the body portion 12 of the upper container 10 constitutes the inner contact portion 30, and the heel connecting portion 38 and the heel portion 40 of the upper container 10 The connecting region constitutes the outer abutting portion 32 when the containers 10 are stacked.
The connecting region between the inner portion 24 of the lower container 10 and the side wall connecting portion 28 constitutes an inner contact portion 30 when the containers 10 are stacked, and the outer portion 26 of the lower container 10 and the hook connecting portion. The connection region with 38 forms the outer abutting portion 32 when the containers 10 are stacked.
The distance between the inner contact portion 30 and the outer contact portion 32 is a length corresponding to approximately twice the radius (r) of the stacked portion 20 corresponding to the thickness (t) of the synthetic resin sheet or slightly less than that. Have a short length. Specifically, it has a length obtained by subtracting twice the thickness (t) of the synthetic resin sheet.

The stack of containers 10 is directly above the stack 20 of the lower container 10 such that a gap 34 is formed between the stack 20 of the upper container 10 and the stack 20 of the lower container 10. The stacking part 20 of the upper container 10 is positioned, and the top part 22 of the stacking part 20 of the upper container 10 and the top part 22 of the stacking part 20 of the lower container 10 face each other.
Further, the stacked body of the containers 10 includes a stacked portion 20, an inner portion 24 and an outer portion 26 that constitute the stacked portion 20 of the upper container 10, and a stacked portion 20 and an inner portion 24 that constitute the stacked portion 20 of the lower container 10. And a gap 34 having a substantially crescent-shaped cross section or a substantially bell-shaped cross section. More specifically, the space 34 is formed in a substantially crescent-shaped cross section or a substantially bell-shaped cross section by a space surrounded by the stacked portion 20 and the side wall connecting portion 28 and the heel connecting portion 38.
Container 10 ₁ stack of top 22 and bottom closure 10 ₂ of the stack portion 20 of the upper at the time when stacked by positioning the container 10 _first stack portion 20 of the upper just above the bottom closure 10 ₂ stacked 20 The space | interval (stack pitch, D) between the top parts 22 of the part 20 is 2 to 4 times the thickness (t) of a synthetic resin sheet.

  The upper container 10 and the lower container 10 are slightly opposite to each other as the longitudinal side wall 52 on the near side of the upper container 10 and the longitudinal side wall 52 on the near side of the lower container 10 face each other and reach the bottom portion 14. The long side wall 54 on the far side of the upper container 10 and the long side wall 54 on the far side of the lower container 10 are opposed to each other and slightly spaced as they reach the bottom 14. May be formed.

  The upper container 10 and the lower container 10 are formed such that the left side wall 56 of the upper container 10 and the left side wall 56 of the lower container 10 face each other and are slightly spaced from each other toward the bottom part 14. In addition, the right side wall 58 of the upper container 10 and the right side wall 58 of the lower container 10 face each other and may be formed so as to be slightly spaced from each other toward the bottom portion 14.

  In the upper container 10 and the lower container 10, the first rib 62 of the longitudinal side wall 52 on the near side of the upper container 10 and the first rib 62 of the longitudinal side wall 52 on the near side of the lower container 10 are opposed to each other. The first rib 62 of the longitudinal side wall 54 on the far side of the upper container 10 and the first rib 62 of the longitudinal side wall 54 on the far side of the lower container 10 face each other, and the second rib of the left side wall 56 of the upper container 10. 64 and the second rib 64 of the left side wall 56 of the lower container 10 are opposed to each other, and the second rib 64 of the right side wall 58 of the upper container 10 is opposed to the second rib 64 of the right side wall 58 of the lower container 10. And stacked.

  When the containers 10 are taken out one by one from the stack of containers 10, the upper container 10 and the lower container 10 are stacked such that the edge 80 of the upper container 10 is stacked on the edge 80 of the lower container 10. Since it is stacked on the flange 40 of the lower container 10 at an appropriate interval, each container 10 is taken out from the stack of containers 10 by picking the edge of the flange 40 by hand. And foodstuffs, such as fruit, are put between the accommodating parts 16 of each container 10, and the opening part 18 is covered with a synthetic resin wrap film.

[Example 1] (shown in FIG. 6)
The container 10 has a height (H1) of the body 12 of 48.5 mm, an outer diameter of the opening 18 183 mm, and an outer diameter 162 mm of the bottom 14.
The taper angle of the side wall 50 from the bottom 14 to the opening 18 is 12 degrees, the thickness (t) of the synthetic resin sheet is 0.3 mm, the radius (r) of the stacked portion 20 is 1.5 mm, and the stack pitch (D) is 0.64 mm.
In Example 1, ten containers 10 could be stacked in a stack height of 60 mm.

[Example 2] (shown in FIG. 10)
The container 10 has a height (H1) of the body 12 of 48.5 mm, an outer diameter of the opening 18 183 mm, and an outer diameter 162 mm of the bottom 14.
The taper angle of the side wall 50 from the bottom 14 to the opening 18 is 12 degrees, the thickness (t) of the synthetic resin sheet is 0.2 mm, the radius (r) of the stacked portion 20 is 1 mm, and the stack pitch (D) is 0.43 mm.
In Example 2, ten containers 10 could be stacked in a stack height of 58 mm.

[Example 3] (shown in FIG. 12)
The container 10 has a height (H1) of the body 12 of 48.5 mm, an outer diameter of the opening 18 183 mm, and an outer diameter 162 mm of the bottom 14.
The taper angle of the side wall 50 from the bottom 14 to the opening 18 is 12 degrees, the thickness (t) of the synthetic resin sheet is 0.4 mm, the radius (r) of the stacked portion 20 is 1.25 mm, and the stack pitch (D) is 1.4 mm.
In Example 3, ten containers 10 could be stacked in a stack height of 61 mm.

[Example 4] (shown in FIG. 14)
The container 10 has a height (H1) of the body 12 of 48.5 mm, an outer diameter of the opening 18 183 mm, and an outer diameter 162 mm of the bottom 14.
The taper angle of the side wall 50 from the bottom 14 to the opening 18 is 12 degrees, the thickness (t) of the synthetic resin sheet is 0.3 mm, the radius (r) of the stacked portion 20 is 1 mm, and the stack pitch (D) is 1.25 mm.
In Example 3, ten containers 10 could be stacked in a stack height of 61 mm.

[Comparative Example 1] (shown in FIGS. 17 and 18)
The container 10 has a body portion 12 with a height (H1) of 50.7 mm, an outer diameter of the opening 18 of 180 mm, and an outer diameter of the bottom 14 of 162 mm.
The taper angle of the side wall 50 from the bottom 14 to the opening 18 is 12 degrees, the thickness of the synthetic resin sheet is 0.27 mm, and the stack pitch is 3 mm.
In Comparative Example 1, ten containers 10 could be stacked in a stack height of 72 mm.

A mold 200 for molding the synthetic resin container 10 having the body portion 12 and the bottom portion 14 with a synthetic resin sheet is as follows.
The concave mold 210 of the mold 200 is directed outwardly to the periphery of the opening portion 18 of the trunk portion 12 and the concave portion 212 for molding the trunk portion 12 and the concave portion 214 for molding the bottom portion 14. A protruding portion 280 for forming an edge portion 80 including a stacking portion 20 having a small-diameter cross-sectional semicircular arc shape or a cross-sectional arc shape, and a flange portion 40, which is projected. The edge convex portion 280 includes a stacked portion convex portion 220 and a flange concave portion 240.
And the convex part 220 for stacking parts is bulged toward the opposite side to the bottom part 14, and maintains the original shape before stacking when the body parts 12 of the plurality of synthetic resin containers 10 are inserted and stacked. In this state, the stacked portion 20 of the upper synthetic resin container 10 and the stacked portion 20 of the lower synthetic resin container 10 are formed at the inner contact portion 30 and the outer contact portion 32 formed at the lower portion. The lower surface of the stacking portion 20 of the upper synthetic resin container 10 above the inner contact portion 30 and the outer contact portion 32 and the lower stacking portion of the synthetic resin container 10 are in contact with each other in a linear or narrow plane. The upper container 10 is stacked so as to form a crescent-shaped or bell-shaped space 34 for separating the upper synthetic resin container 10 and the lower synthetic resin container 10 between the upper surface 20 and the upper surface 20. Form part 20 It is formed a stack portion convex portion 220 for forming the fit of the stack portion 20 of the stacking portion convex portion 220 and the container 10 below.
Then, the edge portion 80 is stacked in contact with each other at the inner contact portion 30 and the outer contact portion 32 of the stacked portion 20 of the plurality of synthetic resin containers 10, and the trunk portions 12 of the plurality of synthetic resin containers 10 are inserted. The convex part for the stacking part for forming the stacking part 20 of the upper container 10 so as to form the stacking part 20 that is configured so that each synthetic resin container 10 can be easily separated and taken out from above. The convex part 220 for stacking parts for forming the stacking part 20 of the part 220 and the lower container 10 is formed.

A mold 200 for molding the synthetic resin container 10 having the body portion 12 and the bottom portion 14 with a synthetic resin sheet is as follows.
The concave mold 210 of the mold 200 includes a body recess 212 for forming the body 12, a bottom recess 214 for forming the bottom 14, and a periphery of the opening 18 of the body 12. A stacking portion convex portion 220 for forming a semicircular or arcuate stacking portion 20 having a radius equal to or less than five times the thickness of the synthetic resin sheet projecting toward the stacking In the state where the convex part 220 for part is expanded toward the opposite side to the bottom part 14 and when the body parts 12 of the plurality of synthetic resin containers 10 are inserted and stacked, the original shape before stacking is maintained. The stacked portion 20 of the upper synthetic resin container 10 and the stacked portion 20 of the lower synthetic resin container 10 are linear in the inner contact portion 30 and the outer contact portion 32 formed in the lower part. Touching a narrow surface, and The upper synthetic resin between the lower surface of the stack portion 20 of the upper synthetic resin container 10 and the upper surface of the stack portion 20 of the lower synthetic resin container 10 above the inner contact portion 30 and the outer contact portion 32. Convex portion convex portion for forming the stack portion 20 of the upper container 10 so as to form a crescent-shaped or bell-shaped gap portion 34 for separating the container 10 and the lower synthetic resin container 10 from each other. The convex part 220 for stacking parts for forming the stacking part 20 of 220 and the lower container 10 is formed.
Then, the stacked portions 20 are stacked in contact with each other at the inner contact portion 30 and the outer contact portion 32 of the stacked portions 20 of the plurality of synthetic resin containers 10, and the trunk portions of the plurality of synthetic resin containers 10 are inserted. Stacked portion convex portions for forming the stacked portion 20 of the upper container 10 so as to form the stacked portion 20 that is stacked and configured so that each synthetic resin container 10 can be easily separated and taken out from above. The convex part 220 for stacking parts for forming the stacking part 20 of 220 and the lower container 10 is formed.

The mold 200 is formed with a concave mold 210 to form the body 12, bottom 14, edge 80 including the stack 20, and the collar 40 of the upper container 10, and the body 12 of the lower container 10. In order to form the bottom portion 14, the edge portion 80 including the stacked portion 20, and the flange portion 40, a concave mold 210 identical to the concave mold 210 of the upper container 10 is formed.
The concave mold 210 forms an edge convex portion 280 for forming the edge portion 80, a flange concave portion 240 for forming the flange portion 40, a side wall concave portion 250 for forming the side wall 50, and the rib 60. The rib convex portion 260 is formed.

When the container 10 is formed by the mold 200, for example, it is used as follows.
First, the synthetic resin sheet material is heated by the heater 290 (shown in FIG. 8A), and then the softened synthetic resin sheet material is positioned on the mold 200 (shown in FIG. 8B).
Then, for example, suction is performed through a hole having a diameter of about 8 mm, and the synthetic resin sheet material is brought into close contact with the concave surface of the concave mold 210 of the mold 200 (shown in FIG. 8C).
Next, the molded container 10 is taken out from the mold 200 (shown in FIG. 8D).

  The container according to the present invention can be used not only as a container for storing food such as fruits but also for storing various products and products.

10, 10 ₁ , 10 ₂ Container 12 Body 14 Bottom 16 Storage 18 Opening 20 Stacking Unit 22 Top 24 Inner Portion 26 Outer Portion 28 Side Wall Connecting Portion 30 Inner Abutting Portion 32 Outer Abutting Portion 34 Void portion 38 Part 40 collar part 50 side wall 52 front side long side wall 54 side long side wall 56 left side wall 58 right side wall 60 rib 62 first rib 64 second rib 66 third rib 70 corner 80 edge 82 flat part 200 mold 210 Concave part 212 Concave part for trunk part 214 Concave part for bottom part 220 Convex part for stacking part 240 Concave part for buttock part 250 Concave part for side wall 260 Convex part for rib 280 Convex part for edge part 1010 Container 1012 Body part 1014 Bottom part 1016 Storage part 1018 Opening part 1040 ridge part 1050 side wall 1051 step part 1080 edge part

Claims (11)

A synthetic resin container having a trunk and a bottom formed by molding a synthetic resin sheet,
The trunk portion is provided with an edge including a stacking portion having a substantially arc-shaped cross section with a small radius at the periphery of the opening portion, and projecting outwardly intersecting the trunk portion.
The stack portion is swelled toward the side opposite to the bottom portion, and the trunk portions of the plurality of synthetic resin containers are inserted, and the stack portion of the upper synthetic resin container is an abbreviation of the stack portion of the lower synthetic resin container. When stacked in a position directly above, the edge of the upper synthetic resin container and the stacked portion of the lower synthetic resin container are linear or narrow at the contact portion formed in the lower part. And between the lower surface of the stacked portion of the upper synthetic resin container above the contact portion and the upper surface of the stacked portion of the lower synthetic resin container, A synthetic resin container formed so as to form a gap portion interposed between a substantially arc of the upper stack part and a substantially arc of the lower stack part for separating the synthetic resin container. A synthetic resin container having a trunk and a bottom formed by molding a synthetic resin sheet,
The body portion has an edge portion including a stacking portion having a substantially arc-shaped cross section having a radius equal to or less than 5 times the thickness of the synthetic resin sheet at the periphery of the opening portion, and facing outwardly intersecting the body portion. Protruding,
The stack portion is swelled toward the side opposite to the bottom portion, and the trunk portions of the plurality of synthetic resin containers are inserted, and the stack portion of the upper synthetic resin container is an abbreviation of the stack portion of the lower synthetic resin container. When stacked in a position directly above, the edge of the upper synthetic resin container and the stacked portion of the lower synthetic resin container are linear or narrow at the contact portion formed in the lower part. And between the lower surface of the stacked portion of the upper synthetic resin container above the contact portion and the upper surface of the stacked portion of the lower synthetic resin container, A synthetic resin container formed so as to form a gap portion interposed between a substantially arc of the upper stack part and a substantially arc of the lower stack part for separating the synthetic resin container. The synthetic resin container according to claim 2, wherein the thickness (t) of the synthetic resin sheet satisfies the following formula.
0.2mm ≦ t ≦ 0.4mm   4. The synthetic resin product according to claim 1, wherein the stacking portion is continuously provided with a side wall connecting portion on a trunk portion side and a flange connecting portion is continuously provided on a side opposite to the trunk portion side. container.   The synthetic resin container according to any one of claims 1 to 4, wherein the stacked portion is formed in a symmetrical shape at both ends of the opposite side edges of the body portion on the opening side.   The synthetic resin container according to claim 1, wherein the stacking portion is partially formed between regions having a flat portion. A synthetic resin container having a trunk and a bottom formed by molding a synthetic resin sheet,
The trunk portion is provided with an edge including a stacking portion having a substantially arc-shaped cross section having a small radius at the periphery of the opening portion, and projecting outward so as to intersect the trunk portion, and the stacking portion is opposite to the bottom portion. When the stacks of the plurality of synthetic resin containers are inserted and the stacks of the upper synthetic resin containers are positioned substantially directly above the stacks of the lower synthetic resin containers The edge portion of the stacked synthetic resin container and the stacked portion of the lower synthetic resin container are in contact with each other in a linear or narrow plane at the contact portion formed in the lower portion, and the contact portion For separating the upper synthetic resin container and the lower synthetic resin container between the lower surface of the upper synthetic resin container stacking portion and the upper surface of the lower synthetic resin container stacking portion above A gap interposed between the approximate arc of the upper stack and the approximate arc of the lower stack Formed to form a plurality of containers,
Stacked by touching at the abutting part of the edges of multiple synthetic resin containers, and stacking by inserting the barrels of multiple synthetic resin containers so that each synthetic resin container can be easily separated and taken out from above A stack of synthetic resin containers. A synthetic resin container having a trunk and a bottom formed by molding a synthetic resin sheet,
The body portion has an edge including a stack portion having a substantially arc-shaped cross section having a radius equal to or less than 5 times the thickness of the synthetic resin sheet at the periphery of the opening portion, and facing outwardly intersecting the body portion. The stacked portion is bulged toward the side opposite to the bottom portion, the trunk portions of the plurality of synthetic resin containers are inserted, and the stacked portion of the upper synthetic resin container is the lower synthetic resin container When the stack is placed at a position directly above the stacking portion, the edge portion of the upper synthetic resin container and the stacking portion of the lower synthetic resin container are in the contact portion formed in the lower portion. The upper synthetic resin between the lower surface of the upper portion of the synthetic resin container and the upper surface of the lower synthetic resin container that is in contact with the linear or narrow surface and above the contact portion Approximate circle of the upper stack for separating the plastic container and the lower synthetic resin container And a plurality of containers formed so as to form a gap portion interposed between and a substantially circular arc of the lower stacking portion in contact with each other at the abutting portions of the edges of the plurality of synthetic resin containers, A stack of synthetic resin containers configured such that the body portions of a plurality of synthetic resin containers are inserted and stacked, and each synthetic resin container can be easily separated and taken out from above. The stack of synthetic resin containers according to claim 8, wherein the thickness (t) of the synthetic resin sheet satisfies the following formula.
0.2mm ≦ t ≦ 0.4mm The contact part is
It is constituted by a part of the stacking part of the lower container or a part of the saddle connection part and / or the side wall connection part connected to the stacking part,
The upper container comprises a part of the stacking part of the upper container or a part of the saddle connection part and / or the side wall connection part connected to the stacking part and / or a boundary between the saddle connection part and the saddle part. A stack of synthetic resin containers according to claim 8.   The synthetic resin according to claim 7 or 8, wherein the gap portion is formed between the stacked portion of the upper container and the stacked portion of the lower container, and has a substantially crescent-shaped or substantially bell-shaped cross section. A stack of containers.

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