JP3184565U - Foamed resin container and container body - Google Patents

Abstract

The upper surface of the opening end of the upper end of the side wall is not exposed, can be used in a clean and sanitary manner, and the impact force between the lids when adjacent containers come into contact with each other can be reduced, so that the lid rises. Provided are a foamed resin container and its container body that can also exhibit the effect of prevention.
A container main body 10 that opens upward, a peripheral portion 21 that is in contact with an upper surface 11a of an opening end 11 at the upper end of the side wall of the container main body 10, and a lid body 20 that has an inner fitting portion 22 with respect to the opening end 11. A container made of foamed resin, the lower end of the peripheral edge 21 of the lid 20 having the same shape as the outer shape of the opening end 11 of the container body 10 and the outer peripheral side surface of the lid 20 facing upward. A tapered inclined surface 23 inclined inwardly is formed.
[Selection] Figure 2

Description

  The present invention relates to a foamed resin container and a container body used for distribution of various articles, transportation and storage.

  Conventionally, as a container for the distribution of cold storage containers and other various goods used for transporting and storing agricultural products and marine products, a container body that opens upward, a peripheral portion that is in contact with the upper surface of the opening end of the container body, and the aforementioned A foamed resin container made of a lid having an inner fitting portion with respect to an open end is known. Such foamed-tree containers are lightweight, easy to handle, and have excellent heat insulation properties. In addition to cold storage containers for agricultural and marine products, logistics for food transportation containers, food cold storage containers, thermal insulation containers and other various goods It is widely used as a container for use, transportation and storage.

  By the way, in such a container, the outer shape of the opening end portion of the container main body and the outer shape of the lid body fitted and attached thereto are the same shape. Is generally coincident with the outer peripheral side surface of the container body. Therefore, when transporting a large number of containers side by side, when the adjacent containers come into contact with each other while swinging due to vibration during transportation, the outer peripheral side surfaces of the lid body come into contact with each other while being rubbed by swinging on a wide surface. As a result of this collision, the lid body sometimes floated.

  Also, in the storage and shipping operations of the above-mentioned various products, for example, containers are transported side by side on a belt conveyor, products to be shipped are placed in the transported containers, covered, and transported to the end point of the conveyor, Although this may be shipped, at this time, at the end point of the conveyor, the lid may come off due to the containers colliding with each other.

  If the cover body is lifted, the sealing performance is impaired, and the cooling effect is impaired when used as a cold storage container.

  In order to solve such a problem, the outer peripheral side surface of the lid body is slightly inward from the outer peripheral side surface of the container body when the lid body is fitted and attached to the opening end of the container body. As described above, the outer shape of the lid body attached to the container body does not collide when adjacent containers come into contact with each other with a dimensional difference between the outer shape of the container body and the lid body. By doing so, it has been proposed to prevent the lid body from being lifted by the contact between the outer peripheral side surfaces of the lid body (Patent Document 1).

  However, when the dimensional difference is made between the outer shape of the container main body and the lid body as in the above proposal, the container main body is attached when the lid body is fitted into the container main body and attached due to the dimensional difference. Thus, the upper surface of the opening end of the surface appears in an exposed state. Therefore, although it is effective in preventing floating, dust tends to accumulate in the exposed portion of the upper surface of the opening end, and it is unsanitary particularly as a food-related container and is unappealing in appearance. In addition, this type of foamed resin container is often used as a cold storage container, and when precooling is performed in the use as the cold storage container, condensation occurs on the exposed portion of the upper surface of the opening end. It may freeze and the lid may not open.

Japanese Patent No. 3805395

  The present invention has been made in view of the above, and in the state in which the lid is fitted and attached to the container body, the upper surface of the opening end of the upper end of the side wall is not exposed, and the appearance is good. It can be used in a sanitary manner, and the area where the lids come into contact with each other due to vibration during transportation is reduced, making it less susceptible to impacts and preventing the lid from lifting up. In addition, the present invention provides a container and a container body made of a foamed resin that can be sufficiently exhibited.

  The present invention that solves the above problems includes a container body that opens upward, a peripheral part that is in contact with the upper surface of the opening end of the upper end of the side wall of the container body, and a lid that has an inner fitting part with respect to the opening end. A container made of foamed resin, wherein the lower end outer shape of the peripheral portion of the lid body is the same plane as the outer shape of the opening end portion of the container body, and the outer periphery of the peripheral portion of the lid body The side surface has a tapered inclined surface inclined inwardly upward, and the outer peripheral side surface of the lid body has at least one opposing two sides, leaving a lower surface that is perpendicular to the lower surface of the peripheral edge, The upper part is formed in a tapered inclined surface inwardly inclined with respect to the vertical surface, and the vertical width of the lower vertical surface on the outer peripheral side surface of the lid is 1/10 or more of the thickness of the peripheral part, It is 1/3 or less.

  According to this container, in a state where the lid is fitted and attached to the container main body, the outer shape of the lower end of the peripheral portion of the lid having the same shape as the plane coincides with the outer shape of the opening end of the container main body. That is, the upper surface of the opening end at the upper end of the side wall of the container main body is not exposed, and the outer peripheral side surface of the lid body does not protrude outward from the outer peripheral side surface of the container main body. Moreover, since the outer peripheral side surface by the peripheral edge portion of the lid body has a tapered inclined surface inwardly inclined upward at at least one of the two opposing sides, when transporting a large number of containers side by side, etc. By arranging the inclined surfaces so as to face each other, when the container is swung by vibration and the adjacent containers are in contact with each other on the two sides, the lids are slightly in contact with each other at the lower edge of the peripheral edge. As a result, there is no strong collision while rubbing against each other. Therefore, it is difficult to be affected by the collision, and it is possible to prevent the lid from being lifted by repeated collision.

  Further, at least one of the two opposite sides of the outer peripheral side surface of the lid body is a tapered slope in which the upper surface is inclined inward with respect to the vertical surface, leaving a lower surface perpendicular to the lower surface of the peripheral edge. Since it is formed on the surface, the same strength as that of the prior art can be retained in the lower end outer peripheral portion of the peripheral portion of the lid without impairing the effect of preventing the lid from lifting. In particular, since the vertical width of the lower vertical surface on the outer peripheral side surface of the lid is 1/10 or more and 1/3 or less of the thickness of the peripheral edge, the above effect becomes more remarkable.

  In the container made of foamed resin, the inclined surface on the outer peripheral side surface of the lid body has an inner surface of the side wall of the container body in a state where a bent continuous portion from the inclined surface to the upper surface of the lid body is attached to the container body. It may be formed so as to be located outward from the upper position. Thereby, when a plurality of containers are stacked, the stacking load of the upper container with the lid can be supported by the side wall of the lower container body, and the load acting on the lid can be reduced.

  In particular, when the bent continuous portion is covered with the lid on the container body, it is outward from the upper position of the inner wall of the side wall of the container body by 1/3 to 2/3 of the thickness of the side wall of the container body. If formed as such, the stacked load can be reliably received by the side wall of the lower container body without impairing the effect of the tapered inclined surface on the outer peripheral side of the lid.

  In the container made of foamed resin, the outer peripheral side surface of the container main body has an inclined surface that is tapered downward, leaving a vertical surface with respect to the upper surface of the opening end portion at the upper end portion. Come. In this case, in particular, the vertical width of the vertical surface on the outer peripheral side surface of the container body is preferably 1.0 to 5.0 times the vertical width of the vertical surface on the outer peripheral side surface of the lid. More preferably, it is 1.0 to 2.0 times.

  That is, when a large number of containers are transported side by side, when the adjacent containers contact each other, the upper surfaces of the outer peripheral side surfaces of the container body come into contact with each other. The force of the impacting action at the lower end outer shape portion of the part is weakened, and as a result, the effect of preventing the lid from lifting due to repeated impacting is enhanced. And since the said perpendicular | vertical surface is only an upper end part, the die cutting after shaping | molding of a container main body is not inhibited.

  Further, the container body of the present invention is a lid that opens upward, and is fitted inside the upper surface of the opening end at the upper end of the side wall so that at least a part of the peripheral edge is flat with the outside of the opening end. A container body used for a foamed resin container having a body, the outer peripheral side surface of the side wall leaving a vertical surface with respect to the upper surface of the opening end portion at the upper end portion, and forming a tapered inclined surface downward It is what. Furthermore, the vertical width of the vertical surface on the outer peripheral side surface of the container main body is 1.0 to 2.0 times the vertical width of the vertical surface with respect to the lower surface of the peripheral edge portion on the outer peripheral side surface of the lid. With this container body, when the containers come into contact with each other, the vertical surfaces of the upper end portions of the outer peripheral side surfaces of the container body come into contact with each other, thereby weakening the force when the outer peripheral side surfaces of the lid come into contact with each other. It is possible to prevent the lid from lifting due to repeated contact. Further, if the vertical width of the vertical surface on the outer peripheral side surface of the container body is 1.0 to 2.0 times the vertical width of the vertical surface with respect to the lower surface of the peripheral portion on the outer peripheral side surface of the lid, Die cutting is easy.

  According to the container made of foamed resin of the present invention, in the state where the lid body is fitted inside and attached to the container body, the upper surface of the opening end of the upper end of the side wall of the container body is not exposed, There is no risk of dust collecting on the upper surface of the opening end, and it can be used with good appearance and hygiene. Further, when the container of the present invention is used as a cold storage container, there is no possibility that condensation occurs during pre-cooling and freezes, and the lid cannot be opened.

  In addition, the container of the present invention has a tapered inclined surface in which the outer peripheral side surface of the lid is inclined inwardly upward, so that adjacent containers are in contact with each other due to vibration during transportation. In this case, since the lids are only slightly in contact with each other at the lower end outer peripheral portion of the peripheral edge and are hardly affected by the contact, the effect of preventing the cover from being lifted by repeated contact can be exhibited.

FIG. 3 is a partially cutaway perspective view of the foamed resin container of the present invention in a state where the lid is attached. It is a cross-sectional explanatory drawing of a container same as the above. It is a one part expanded sectional explanatory view same as the above. It is a partial expanded sectional view which shows the other Example of this invention. It is a partial expanded sectional view which shows the further another Example of this invention.

  Next, embodiments of the present invention will be described based on examples shown in the drawings.

  The container of the embodiment is a container made of foamed resin formed from a foamed resin such as foamed polystyrene, for example, and is mainly a flat rectangular container body 10 that opens upward, and the upper opening of the container body 10 is closed. And a lid 20 that is attached in such a manner.

  The container main body 10 is a bottomed container that has side walls 12 in four directions and opens upward as shown in the figure. Reference numeral 11 denotes an opening end at the upper end of the side wall of the container body 10, and the lid 20 is fitted into the opening end 11.

  That is, the lid body 20 has a peripheral edge portion 21 that is in contact with the upper surface 11 a of the opening end portion 11 of the container body 10 and an inner fitting portion 22 with respect to the opening end portion 11. Is fitted to the opening end 11 so that the lower surface 21a of the peripheral edge 21 is attached to the upper surface 11a of the opening end 11 of the container body 10. The inner fitting portion 22 may be formed so as to protrude along the peripheral edge 21 on the lower surface of the lid 20 as shown in FIGS. It is also possible to project and form the entire side portion so as to fit inside the opening end portion 11.

  As shown in the figure, the lid 20 has an upper surface of the opening end 11 in a state where the inner fitting portion 22 of the lid 20 is fitted and attached to the opening end 11 of the container body 10. 11a is not exposed and the outer peripheral side of the peripheral edge 21 does not protrude outward, and the lower end outer shape of the peripheral edge 21 matches the outer peripheral side of the container main body 11. 11 is formed so as to have the same shape as the plane. And the outer peripheral side surface by the peripheral part 21 of the said cover body 20 is the taper-like inclined surface 23 which incline inward toward the upper direction on the at least one opposing two sides, Preferably, the perimeter of four sides like a figure. It is formed to make.

  In the case of the embodiment of FIGS. 1 to 3, the outer peripheral side surface by the peripheral portion 21 of the lid body 20 leaves a vertical surface 24 with respect to the lower surface 21 a of the peripheral portion 21 at the lower portion and the upper portion with respect to the vertical surface 24. It is formed as a tapered inclined surface 23 inclined inward.

  As in the embodiment of FIG. 4, the entire outer peripheral side surface of the peripheral edge portion 21 of the lid body 20 may be a tapered inclined surface 23, but in this case, the lower end of the peripheral edge portion 21 of the lid body 20. Since the outer peripheral edge has an acute angle and may be lost due to a collision with an adjacent container or the like, in practice, the upper surface is formed as the inclined surface 23 while leaving the vertical surface 24 at the lower portion as described above. Is particularly preferable from the viewpoint of the effect of preventing defects due to contact with adjacent containers.

  As described above, when the vertical surface 24 is formed below the outer peripheral side surface of the peripheral portion 21 of the lid body 20, the vertical width a of the vertical surface 24 is equal to the vertical thickness T of the peripheral portion 21. Those having a width of 1/10 or more and 1/3 or less are preferable. That is, when the vertical width a is larger than the above, it is difficult to obtain the effect of preventing the lifting due to the outer peripheral side surface of the peripheral portion 21 being a tapered inclined surface 23, and the vertical width a is smaller than the above. If so, there is a risk of loss.

  The inclined surface 23 on the outer peripheral side surface by the peripheral portion 21 of the lid body 20 is a container body in a state where the bent continuous portion 25 from the inclined surface 23 to the lid body upper surface 20a is attached to the container body 10. It is preferable to form it so that it is at a position slightly outward from the upper position of the inner surface of the side wall 12.

  That is, when a plurality of containers are stacked with the lid 20 attached to the container body 10 (chain line in FIG. 3), the load of the upper container is applied to the lid 20, and the bent continuous portion 25 is If the container body 10 is located inward from the upper position of the side wall 12, the stacking load is applied to the inner part of the lid body 20, and the burden on the lid body 20 is large and may be damaged. As described above, the bent continuous portion 25 is set so as to be located outward from the upper position of the inner surface of the side wall, and is formed so that the stacked load can be supported by the side wall 12 of the container body 10. preferable.

  In view of the above effect, in the state where the bent continuous portion 25 is attached to the container body 10 with the lid 20, the thickness of the side wall 12 of the container body 10 is 1 / th of the thickness above the inner surface of the side wall 12 of the container body 10. It is preferable to form it so as to be outside the dimension of 3 to 2/3. In practice, considering the effect of preventing the lid 20 from being lifted by contact between adjacent containers, the inclination angle θ of the inclined surface 23 is set to 5 degrees or more, and the position of the bent continuous portion 25 is set as described above. It is preferable to set it.

  In addition, about the outer peripheral side surface of the side wall 12 of the said container main body 10, like the normal shaping | molding container, considering the die cutting after shaping | molding, it gave the draft slightly as a whole like the normal shaping | molding container. The tapered inclined surface 13 can also be used. In this case, when a large number of containers are transported side by side, when the adjacent containers come into contact with each other, the opening end 11 portion at the upper end of the side wall 12 and the opening Since it will contact locally only in the part of the lower end external shape of the peripheral part 21 of the cover body 20 which contact | connects the edge part 11, practically, as shown in FIGS. It is preferable that the inclined surface 13 is tapered downward while leaving the vertical surface 14 with respect to the upper surface of the open end 11. That is, by forming in this way, when adjacent containers come into contact with each other, the vertical surfaces 14 and 14 at the upper end of the side wall 12 of the container body 10 come into contact with each other, so The contact force can be reduced, and the effect of preventing the lid 20 from being lifted can be enhanced.

  The vertical width b of the vertical surface 14 on the outer peripheral side surface of the container body 10 can be set as appropriate in consideration of die cutting after molding, but in practice, the vertical direction of the vertical surface 24 on the outer peripheral side surface of the lid 20 The width a is set to 1.0 to 5.0 times, preferably about 1.0 to 2.0 times.

  The structure of the container body 10 is internally fitted so as to form the same shape as that of the outer side of the open end 11 on at least a part of the peripheral portion 21, that is, on the entire circumference of one opposite two sides or four sides. The present invention can also be applied to a container made of a foamed resin having a lid 20, and in this case also, the vertical width of the vertical surface 24 on the outer peripheral side of the container body 10 is vertical to the lower surface of the peripheral portion on the outer peripheral side of the lid 20. It is assumed that it is 1.0 to 2.0 times the vertical width of.

  In addition, as a structure by the inner fitting part 22 of the cover body 20 with respect to the opening end part 11 of the container main body 10, the notch step part is formed in the inner peripheral side of the opening end part 11 of the container main body 10 like the Example of FIG. 16, and on the other hand, on the lower surface of the lid 20, a projecting inner fitting portion that fits into the notch step portion 16 along the inner side of the peripheral edge portion 21 that is in contact with the upper surface 11 a of the opening end portion 11. 22 can also be provided. In the case of this embodiment as well, the lower end outer shape of the peripheral portion 21 of the lid 20 is the same as the outer shape of the opening end portion 11 of the container body 10 and the outer peripheral side surface of the peripheral portion 21 is the same as the above-described embodiment. As shown in the drawing, the vertical surface 24 can be left in the lower portion and the upper portion can be formed into a tapered inclined surface 23, or the entire outer peripheral side surface can be formed into a tapered inclined surface. Also, the outer peripheral side surface of the side wall 12 of the container body 10 is also formed as a lower tapered inclined surface 14 with the upper surface 11a left perpendicular to the upper surface 11a of the open end 11 as in the above-described embodiment. Alternatively, the entire outer peripheral side surface can be implemented as a tapered inclined surface.

  Although the said container main body 10 and the cover body 20 can be manufactured with arbitrary foaming resin moldings, it is preferable that it is a foaming molding body of a thermoplastic resin. Thermoplastic resins include polystyrene resins, polyolefin resins (eg, polypropylene resins, polyethylene resins), polyester resins (eg, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate), polycarbonate resins, polylactic acid resins, etc. Can be mentioned. Among these, it is preferable to use a composite resin containing polystyrene and polyethylene. The foaming ratio of the foam is preferably 3 to 50 times. Further, if necessary, a non-foamed resin skin layer may be provided on the surface of the foamed resin.

  According to the container made of foamed resin of the above-described embodiment, the inner fitting portion 22 of the lid body 20 is fitted into the opening end portion 11 of the container main body 10, and the lid body 20 is attached to the container main body. In the state, as shown in the figure, the peripheral edge 21 of the lid 20 is in contact with the upper surface 11a of the opening end 11 of the container main body 10, and the lower end outline of the peripheral edge 21 and the opening end of the container main body 10 are shown. Therefore, the upper surface 11a of the open end 11 of the container body 10 is not exposed. Further, the outer peripheral side surface of the peripheral edge portion 21 of the lid 20 does not protrude outward from the outer peripheral side surface of the container body 10. Therefore, there is no possibility of dust collecting on the upper surface of the opening end portion 11, and it can be used with good appearance and hygiene. Further, when the container of the present invention is used as a cold storage container, there is no possibility that condensation occurs during pre-cooling and freezes and the lid cannot be opened.

  In addition, the outer peripheral side surface by the peripheral edge portion 21 of the lid 20 has at least one opposite two sides, for example, four sides as shown in the figure, and a tapered inclined surface 23 inclined inwardly upward. For example, when dust is dropped and a large number of containers are transported side by side, by arranging the inclined surfaces 23 so as to face each other, when adjacent containers swing and come into contact with each other, The outer shape of the lower end of the peripheral edge portion 21 of the lid 20 is slightly abutted, but the abutting area is small so that it does not abut against rubbing. Therefore, the action of lifting the lid 20 is small, and therefore, the collision is repeated. The lift of the lid 20 can be prevented.

  For example, when various products are shipped, for example, when the containers are arranged and conveyed by a belt conveyor, the products to be shipped are put in the containers to be conveyed, covered, and conveyed to the end point of the conveyor, Even if the containers come into contact with each other at the end point, the lid 20 does not come off. At this time, since the container is transported side by side in the same direction, the above-described effect can be obtained only by providing a tapered inclined surface 23 on one opposite two sides of the outer peripheral side surface of the lid 20 on one opposite two sides. available.

  Further, on the outer peripheral side surface of the side wall 12 of the container body 10, by leaving a vertical surface 14 with respect to the upper surface of the opening end portion 11 at the upper end portion of the side wall 12, a downward inclined tapered surface 13 is provided. When adjacent containers come into contact with each other, the vertical surfaces 14 at the upper ends of the outer peripheral side surfaces of the container body 10 come into contact with each other, so that the force of the contact action at the peripheral portion of the lid 20 is weakened at the time of this contact. As a result, it is possible to prevent the lid 20 from being lifted due to repeated contact. And since the said vertical surface 14 is only an upper end part, the die cutting after the shaping | molding of the container main body 10 is not inhibited.

  The container made of foamed resin according to the present invention can be widely used as a container for logistics, transportation and storage of agricultural products and marine products as well as food transportation containers, food cold containers, thermal insulation containers and other various articles. .

  DESCRIPTION OF SYMBOLS 10 ... Container main body, 11 ... Open end part, 11a ... Upper surface of open end part, 12 ... Side wall, 13 ... Inclined surface, 14 ... Vertical surface, 16 ... Notch step part, 20 ... Cover body, 20a ... Upper surface of cover body , 21 ... peripheral edge part, 21a ... lower surface of peripheral edge part, 22 ... inner fitting part, 23 ... inclined surface, 24 ... vertical surface, 25 ... bent continuous part, a ... vertical width of vertical surface 14, b ... vertical surface 24 vertical width, T ... vertical thickness of the peripheral edge.

Claims (6)

A container made of a foamed resin comprising a container body that opens upward, a peripheral portion that is in contact with the upper surface of the opening end of the upper end of the side wall of the container body, and a lid that has an inner fitting portion with respect to the opening end,
The outer shape of the lower end of the peripheral part of the lid body is flat and identical to the outer shape of the opening end part of the container body at two opposite sides, and the outer peripheral side surface of the peripheral part of the lid body is inclined inwardly upward. Made a tapered inclined surface,
The outer peripheral side surface of the lid body is a tapered inclined surface whose upper surface is inclined inward with respect to the vertical surface, with the lower surface remaining on the lower surface of the peripheral edge on at least one opposing two sides. Formed,
A container made of foamed resin, wherein the vertical width of the lower vertical surface on the outer peripheral side surface of the lid is 1/10 or more and 1/3 or less of the thickness of the peripheral edge.   The inclined surface on the outer peripheral side surface of the lid body is such that the bent continuous portion from the inclined surface to the upper surface of the lid body is outside the upper position of the inner surface of the side wall of the container body when the lid body is attached to the container body. The foamed resin container according to claim 1, wherein the foamed resin container is formed.   In a state where the lid is attached to the container main body, the bent continuous part is outside the position of 1/3 to 2/3 of the thickness of the side wall of the container main body from the position above the inner surface of the side wall of the container main body. The foamed resin container according to claim 2, wherein the foamed resin container is formed.   The outer peripheral side surface of the side wall of the container body has a tapered surface inclined downward, leaving a vertical surface with respect to the upper surface of the opening end portion at the upper end portion. The container made of foamed resin as described.   The container made of foamed resin according to claim 4, wherein the vertical width of the vertical surface on the outer peripheral side surface of the container body is 1.0 to 5.0 times the vertical width of the vertical surface on the outer peripheral side surface of the lid. . A foamed resin container having a lid that opens upward and is fitted on the upper surface of the opening end at the upper end of the side wall so that at least a part of the peripheral edge is flush with the outside of the opening end. A container body used,
The outer peripheral side surface of the side wall leaves a vertical surface with respect to the upper surface of the opening end portion at the upper end portion, and forms a tapered inclined surface downward.
The vertical width of the vertical surface on the outer peripheral side surface of the container body is 1.0 to 2.0 times the vertical width of the vertical surface with respect to the lower surface of the peripheral edge on the outer peripheral side surface of the lid body. .

Images