JP6259218B2 - Cup-type container and method for producing the container - Google Patents

Description

  The present invention relates to a cup-type container and a method for producing the container.

  2. Description of the Related Art Conventionally, a cup-type container is known in which ribs extending in the vertical direction are provided on the outer surface of a cylindrical container (for example, Patent Document 1). In such a cup-type container, the label packaged outside the cup-type container comes into contact with the rib instead of the cup-type container. Since the label and the outer surface of the cup-shaped container do not come into contact with each other, it is possible to make it difficult to transfer heat between the contents in the container and the outside of the container.

Japanese Patent Laid-Open No. 9-272544

  Here, for example, in the case of putting solids such as noodles into a cup-shaped container and pouring hot water, the density of the solids on the lower side inside the cup-shaped container is reduced from the viewpoint of efficiently convection of the hot water. Furthermore, it is preferable to form a region where hot water convects below the solid matter. For this purpose, when the cup-shaped container is transported or when hot water is poured into the cup-shaped container, the solid substance inside the cup-shaped container is held at a predetermined position, and the solid substance is moved to the lower side inside the cup-shaped container. It is necessary to suppress movement. However, in the cup-type container as described above, the solid matter slides down the inner surface of the cup-type container and cannot sufficiently hold the solid matter, so the solid matter moves to the lower side inside the cup-type container, There is a risk that the convection efficiency of hot water will deteriorate.

  Furthermore, since the cup-type container provided with the ribs described above is formed by injection molding, a plurality of molds are required, and the molding operation becomes complicated. Therefore, there has been a demand for a cup-type container that can be molded more easily than before and that can make it difficult to transfer heat between the contents in the container and the outside of the container.

  Therefore, the present invention can hold a solid substance at a predetermined position of the container, and can easily form and make it difficult to transfer heat between the contents in the container and the outside of the container. And it aims at providing the manufacturing method of a container.

  A cup-shaped container according to the present invention is a cup-shaped container having a substantially cylindrical first container that has a bottom surface portion and a side surface portion and is open at the top, and the side surface portion is substantially directed toward the bottom surface portion. In addition to being tapered, it has a bellows portion bent into a bellows shape along the circumferential direction, and a step portion bent so as to be stepped in the vertical direction.

  In the cup-type container according to the present invention, the bellows portion bent in the bellows shape along the circumferential direction has a portion protruding to the outer peripheral surface side of the side surface portion and a portion protruding to the inner peripheral surface side. A portion of the bellows portion that protrudes toward the outer peripheral surface of the side surface portion is a portion that comes into contact with another member that covers the cup-shaped container or a hand that holds the cup-shaped container. As described above, the contact area between the cup-shaped container and the other member or the hand is reduced when the portion protruding to the outer peripheral surface side of the side surface portion comes into contact with the other member or the hand. It is possible to make it difficult to transfer heat to the outside.

  In addition, among the stepped portions bent so as to be stepped in the vertical direction, the portion on the inner peripheral surface side of the side surface portion is cup-shaped when the cup-shaped container is transported or hot water is poured into the cup-shaped container. It functions as a stopper that prevents the solid matter inside the container from moving to the lower side of the cup-type container. Therefore, the solid can be held at a predetermined position of the container (a position where the step portion is provided). For example, when instant noodles are put in a cup-type container, when hot water is poured into the cup-type container, the instant noodles are held at a predetermined height by the stepped portion, so that the hot water is appropriately placed under the instant noodles. It can be convected.

  Furthermore, since both the bellows part and the step part are formed by bending, the molding process does not go through a complicated process using a plurality of molds (convex mold and concave mold) such as injection molding. Can be molded. Therefore, the cup-shaped container according to the present invention formed by bending can be easily formed.

  Further, the side surface portion has a step portion at the middle in the vertical direction. Since the step portion is provided in the middle stage, the solid matter can be held at the middle position. Thereby, it can prevent that a solid substance moves to the lower side rather than a middle stage, and when hot water is poured, the area | region where a hot water stays under a solid substance can be ensured.

  The step portion is provided in the bellows portion. The bellows portion has a portion protruding to the inner peripheral surface side of the side surface portion. By providing a step portion in such a protruding portion, a step portion is provided at a location that contacts the solid matter inside the cup-shaped container. That is, the solid matter inside the cup-type container can be more effectively retained.

  Further, the step portion is provided over the entire circumference of the side surface portion. By providing the stepped portion over the entire circumference of the side surface portion, it becomes easier to hold the solid matter.

  Moreover, the bellows part is provided over the perimeter of the side part. By providing the bellows part over the entire circumference of the side face part, it is possible to make it difficult to transfer heat between the contents in the container and the outside of the container.

  Moreover, the step part is provided with two or more by the up-down direction of the side part, and the space | interval between the step parts adjacent to an up-down direction is 2-8 mm. By setting the interval between adjacent stepped portions to 2 to 8 mm, it is possible to easily hold the solid matter.

  The wall thickness of the first container is 0.1 to 0.5 mm. By setting it as such thickness, it can shape | mold easily by sheet | seat shaping | molding etc. Further, the weight can be reduced.

  In addition, the first container is further provided with a second container that has a bottom surface part and a side surface part, is formed in a substantially cylindrical shape with an upper opening, and the first container is accommodated in the second container. , A space is formed between the side surface of the first container and the side surface of the second container. By forming a space between the side surface portion of the first container and the side surface portion of the second container, the heat insulation of the first container can be improved.

  The first container has a held portion that is held by the second container at the upper end portion of the side surface portion, and the second container has a holding portion that holds the held portion at the upper end portion of the side surface portion. Has been. The held portion of the first container is held by the holding portion of the second container, thereby appropriately forming the first container while forming a space between the side surface portion of the first container and the side surface portion of the second container. Can be contained in the second container.

  The container manufacturing method according to the present invention is a method for manufacturing a substantially cylindrical container having a bottom surface portion and a side surface portion and opened upward, and the side surface portion is formed in a substantially tapered shape toward the bottom surface portion. The bellows part bent in the bellows shape along the circumferential direction and the step part bent so as to be stepped in the vertical direction are formed on the side surface part. According to such a manufacturing method, a container having a bellows portion and a step portion provided on the side surface portion can be manufactured.

  Further, the container is formed by sheet forming. By performing sheet molding that heats and softens the sheet while it is clamped on the mold and makes the sheet come into close contact with the mold by air pressure, the container can be easily used without using multiple molds as in injection molding. Can be molded. In addition, the molded container can be made thin and lightweight.

  According to the present invention, a solid substance can be held at a predetermined position of a container, can be easily molded, and heat can be hardly transmitted between the contents in the container and the outside of the container.

It is a figure which shows the use condition of a cup-shaped container. It is a plane side perspective view of a 1st container. It is a bottom side perspective view of the first container. It is a front view of a 1st container. (A) is sectional drawing along the VV line of FIG. 4, (b) is an end elevation along the VV line of FIG. FIG. 5 is an end view taken along line V-V in FIG. 4 in a state where instant noodles are housed in a first container. (A) is sectional drawing along the VII-VII line of FIG. 4, (b) is an end elevation along the VII-VII line of FIG. FIG. 8 is a partially enlarged view of FIG. FIG. 5 is an end view taken along line VII-VII in FIG. 4 in a state where instant noodles are accommodated in a first container and hot water is poured. It is a plane side perspective view of a 2nd container. It is sectional drawing of a 2nd container. It is a bottom side perspective view of a lid. It is an end elevation of a lid. It is an end view of a cup type container.

  Hereinafter, preferred embodiments of the cup-type container according to the present invention will be described in detail. In the present embodiment, the present invention is applied to a cup-type container that houses instant noodles (instant instant noodles). In the drawings, the same or corresponding parts are denoted by the same reference numerals. The terms “upper” and “lower” correspond to the vertical direction of the drawing.

  FIG. 1 is a view showing a use state of the cup-type container. As shown in FIG. 1, the cup-type container 1 includes a first container 10, a second container 20 that houses the first container 10, and a lid 30 for the first container 10 and the second container 20. The first container 10 is a container in which instant noodles are accommodated and hot water is poured. The second container 20 is a container that enhances the heat insulation of the first container 10 by covering the first container 10.

  The first container 10 will be described with reference to FIGS. FIG. 2 is a plan side perspective view of the first container. FIG. 3 is a bottom perspective view of the first container. FIG. 4 is a front view of the first container. The first container 10 is a polystyrene container, and more specifically is formed of a polystyrene resin, a polypropylene resin, or the like. The first container 10 is formed by sheet molding from, for example, a sheet of polystyrene, and the wall thickness can be, for example, in the range of about 0.1 to 0.5 mm, and more preferably about 0.3 mm. it can.

  As shown in FIG. 2 to FIG. 4, the first container 10 includes a bottom surface portion 11 formed in a circular shape and a side surface portion 12 formed in a substantially cylindrical shape rising above the periphery of the bottom surface portion 11. It is a bottomed cylindrical container. An opening 13 is formed in the upper part of the first container 10 above the bottom part 11.

  The bottom surface portion 11 has a two-stage structure, and includes an outer bottom surface portion 11a that forms the outermost bottom surface, and an inner bottom surface portion 11b that protrudes to the inner side of the first container 10 inside the outer bottom surface portion 11a. Yes. The outer bottom surface portion 11a is formed in an annular shape, and the inner bottom surface portion 11b is formed in a circular shape.

  The side surface portion 12 includes a tapered portion 14 that is substantially tapered toward the bottom surface portion 11, and a held portion 15 that is formed on the upper side of the tapered portion 14. Here, the taper shape in the present embodiment refers to a shape in which the diameter of the side surface portion 12 becomes narrower toward the bottom surface portion 11. Further, the substantially tapered shape means a shape that can be regarded as a taper shape as a whole, such as a complete tapered shape, a shape composed of a tapered shape and a portion that is not a tapered shape (a portion where the diameter of the side surface portion 12 does not change), and the like. Say.

  The held portion 15 is a portion held by the second container 20 (see FIG. 10), and is a first enlarged portion 16 that is continuous with the tapered portion 14 and has a diameter larger than that of the tapered portion 14, and a first enlarged portion. 16 and a second enlarged portion 17 having a diameter larger than that of the first enlarged portion 16.

  A concave portion 16 a having a smaller diameter than other portions of the first enlarged diameter portion 16 is formed at the upper end portion of the first enlarged diameter portion 16. The concave portion 16a is a portion that is engaged with the convex portion 24a of the second container 20 (see FIG. 10). Further, a diameter-enlarged portion 17 a whose diameter increases toward the upper end of the second enlarged-diameter portion 17 (having an inversely tapered shape) is formed at the upper end portion of the second enlarged-diameter portion 17. The diameter enlarged portion 17a is a portion that sandwiches the protruding portion 26 (see FIG. 10) of the second container 20 together with the downward protruding portion 19 described later. In addition, the height of the taper part 14 is about 105 mm, the height of the 1st enlarged diameter part 16 is about 10 mm, for example, and the height of the 2nd enlarged diameter part is about 10 mm.

  Further, the held portion 15 has a projecting portion 18 projecting from the upper end of the second enlarged diameter portion 17 to the outside of the first container 10 and a lower projecting portion 19 projecting obliquely downward from the tip of the projecting portion 18. ing. The overhang portion 18 is a portion in contact with the upper surface of the overhang portion 26 (see FIG. 10) of the second container 20. The downward projecting portion 19 is a portion that sandwiches the projecting portion 26 (see FIG. 10) of the second container 20 together with the diameter enlarged portion 17a, and is a portion that is engaged with the convex portion 34a (see FIG. 12) of the lid 30. is there.

  The detail of the taper part 14 is demonstrated with reference to FIGS. 5A is a cross-sectional view taken along line VV in FIG. 4, and FIG. 5B is an end view taken along line VV in FIG. FIG. 6 is an end view taken along line V-V in FIG. 4 in a state where instant noodles are housed in the first container. 7A is a cross-sectional view taken along line VII-VII in FIG. 4, and FIG. 7B is an end view taken along line VII-VII in FIG. FIG. 8 is a partially enlarged view of FIG. FIG. 9 is an end view taken along line VII-VII in FIG. 4 in a state where instant noodles are accommodated in the first container and hot water is poured.

  As shown in FIGS. 5A and 5B, the tapered portion 14 has a bellows portion 40 that is bent in a bellows shape along the circumferential direction of the side surface portion 12. The bellows shape along the circumferential direction is a mountain fold shape, that is, a shape in which the outer side of the side surface portion 12 protrudes, and a valley fold shape, that is, a shape in which the inner side of the side surface portion 12 protrudes alternately along the circumferential direction. A lined shape.

  Here, since the bellows portion 40 is formed by bending, the portion protruding from the outside of the first container 10 has a concave shape when viewed from the inside of the first container 10. It has become. For example, the mountain fold shape of the bellows portion 40 is a protruding shape when viewed from the outside of the first container 10, and a recessed shape when viewed from the inside of the first container 10.

  Specifically, the bellows portion 40 includes a plurality of mountain fold portions 41 and valley fold portions 42 and a communication portion 43. The mountain fold portion 41 is a ridge line portion protruding to the outside of the side surface portion 12, and is a pointed portion having a mountain fold shape. Moreover, the valley fold part 42 is a ridge line part which protruded to the inner side of the side part 12, and is a point part of a valley fold shape. The communication part 43 is a part that connects the adjacent mountain fold 41 and valley fold 42.

  Each of the plurality of mountain fold portions 41 and valley fold portions 42 extends linearly in the vertical direction from the upper end (location in contact with the first enlarged diameter portion 16) to the lower end (location in contact with the bottom surface portion 11) of the tapered portion 14. (See FIG. 4). Further, the mountain fold portions 41 and the valley fold portions 42 are alternately arranged along the circumferential direction of the tapered portion 14.

  Such a bellows portion 40 is provided over the entire circumference of the taper portion 14 (that is, the entire circumference of the side surface portion 12), and the first container 10 is in contact with other members on the outer side of the side surface portion 12. The mountain fold 41 is the contact surface. Moreover, when the 1st container 10 accommodates a solid substance inside, the valley fold part 42 becomes a contact surface with a solid substance. As shown in FIG. 6, in a state where the instant noodles 60 are accommodated in the first container 10, the valley folds 42 are contact surfaces with the instant noodles 60.

  As shown in FIG. 6, the instant noodles 60 are in contact with the valley folds 42, but the instant noodles 60 are unlikely to reach the mountain folds 41 that are recessed in the first container 10. Therefore, a region surrounded by the mountain fold 41 and the connecting portion 43 adjacent to the mountain fold 41 is a flow path for convection of hot water in the vertical direction with the density of the instant noodles 60 being small. Therefore, the bellows portion 40 plays a role as a flow line that smoothly convects the poured hot water in the vertical direction inside the first container 10. By smoothly convection of the hot water inside the first container 10, the hot water spreads evenly over the instant noodles 60 inside the first container 10.

  As shown in FIGS. 7A and 7B, the side surface portion 12 has a step region 50 in the middle in the vertical direction of the tapered portion 14. The middle in the vertical direction is, for example, a region above the position that allows sufficient convection of hot water downward and below the uppermost surface of hot water. Specifically, for example, it is a region from a position about 25 mm above the bottom surface portion 11 in the taper portion 14 to a position about 75 mm above the bottom surface portion 11. Unlike the other regions in the taper portion 14, the step region 50 includes a plurality of step portions 51 that are bent so as to be stepped in the vertical direction. The interval between the step portions 51 adjacent in the vertical direction is, for example, 2 to 8 mm, and preferably 4 mm. When the step portions 51 are provided at intervals of 4 mm, for example, 11 step portions 51 are provided.

  Details of the stepped portion 51 will be described with reference to FIG. FIG. 8 is a partially enlarged view of FIG. 7B and shows a stepped portion. In the step region 50, a plurality of portions bent inward according to the taper shape are provided, and the bent portion is the step portion 51. A step contact portion 52 communicates between adjacent step portions 51.

  The step portion 51 includes a first bent portion 51a bent toward the inside of the first container 10, a connecting portion 51b extending from the first bent portion 51a toward the inside of the first container 10, and a tip of the connecting portion 51b. And the second bent portion 51c bent toward the bottom surface portion 11 side of the first container 10. For this reason, the step region 50 has a step connecting portion 52 extending substantially vertically downward toward the bottom surface portion 11 from the upper side to the lower side, and cranks at the first bent portion 51a and the second bent portion 51c of the step portion 51. After being bent into a shape, the shape in which the step connecting portion 52 extends substantially vertically downward toward the bottom surface portion 11 is repeated. For this reason, on the inner peripheral surface of the step region 50, the step connecting portion 52 located above the step portion 51 (before bending) by the first bent portion 51 a, the connecting portion 51 b, and the second bent portion 51 c of the step portion 51. A hook portion 53 is formed so as to project from the inner surface of the first container 10 to the inside thereof.

  Further, the step portion 51 is continuously provided over the entire circumference of the tapered portion 14 (that is, the entire circumference of the side surface portion 12), and similarly, the bellows portion 40 provided over the entire circumference of the tapered portion 14. Is also provided. That is, the step portions 51 are provided in all of the mountain fold portion 41, the valley fold portion 42, and the connecting portion 43 of the bellows portion 40. As described above, in the first container 10, the valley fold portion 42 of the bellows portion 40 becomes a contact surface with the instant noodle 60, and as shown in FIG. 9, the step provided in the valley fold portion 42. The hook part 53 of the part 51 is hooked on the instant noodle 60, thereby preventing the instant noodle 60 from falling to the lower part of the first container 10.

  Next, with reference to FIG.10 and FIG.11, the 2nd container 20 which accommodates the 1st container 10 is demonstrated. FIG. 10 is a plan side perspective view of the second container. FIG. 11 is a cross-sectional view of the second container. The second container 20 is a polystyrene container, and more specifically, is formed of a polystyrene resin, a polypropylene resin, or the like. The wall thickness can be in the range of about 0.1 to 0.5 mm, and more preferably about 0.3 mm. Since the second container 20 is accommodated so as to cover the first container 10, a person eating and drinking can eat and drink without directly touching the first container 10 poured with hot water by gripping the second container. .

  As shown in FIG. 10 and FIG. 11, the second container 20 includes a bottom surface portion 21 formed in a circular shape, and a side surface portion 22 formed in a substantially cylindrical shape rising above the periphery of the bottom surface portion 21. It is a bottomed cylindrical container. An opening 27 is formed in the upper part of the second container 20 above the bottom part 21.

  The side surface portion 22 includes a tapered portion 23 that is substantially tapered toward the bottom surface portion 21, and a holding portion 28 that is formed above the tapered portion 23. The holding portion 28 is a portion that holds the held portion 15 (see FIG. 2) of the first container 10, and includes a first enlarged diameter portion 24 that is continuous with the tapered portion 23 and has a larger diameter than the tapered portion 23, and the first A second enlarged diameter portion 25 that is continuous with the enlarged diameter portion 24 and has a diameter larger than that of the first enlarged diameter portion 24; and an overhang portion 26 that projects from the second enlarged diameter portion 25 to the outside of the second container 20. Yes.

  On the upper end of the first diameter-expanded portion 24, convex portions 24a that protrude inward of the second container 20 are formed at predetermined intervals over the entire circumference. The convex part 24a is a part engaged with the concave part 16a (see FIG. 4) of the first container 10. The overhang portion 26 is sandwiched between the enlarged diameter portion 17a of the first container 10 and the downward overhang portion 19 (see FIG. 4) while being in contact with the lower surface of the overhang portion 18 (see FIG. 2) of the first container 10. It is a part to be.

  Here, the diameter of each part of the taper part 23 is larger than the diameter of each part of the taper part 14 (refer FIG. 4) of the 1st container 10 which opposes in a radial direction. The second container 20 is higher than the first container 10. Therefore, a space is formed between the tapered portion 14 of the first container 10 and the tapered portion 23 of the second container 20 in a state where the second container 20 accommodates the first container 10. A space is also formed between the bottom surface portion 11 of the first container 10 and the bottom surface portion 21 of the second container 20.

  Next, the lid 30 that closes the opening 13 (see FIG. 2) of the first container 10 and the opening 27 (see FIG. 10) of the second container 20 will be described with reference to FIGS. FIG. 12 is a bottom perspective view of the lid. FIG. 13 is an end view of the lid. The lid 30 is made of the same material as that of the second container 20, such as polystyrene resin or polypropylene resin. The wall thickness can be, for example, in the range of about 0.1 to 0.4 mm, and more preferably about 0.2 mm.

  The lid 30 has a covering portion 31 formed in a circular shape and an annular outer lid portion 32 surrounding the covering portion 31. The outer lid portion 32 includes a first side wall portion 33 that rises upward from the peripheral edge of the covering portion 31, an overhang portion 34 that projects outward from the tip of the first side wall portion 33, and a downward direction from the tip of the overhang portion 34. The second side wall portion 35 extends.

  On the first side wall portion 33, convex portions 33a projecting to the outside of the lid 30 are formed at predetermined intervals over the entire circumference. In addition, convex portions 35 a that protrude to the inside of the lid 30 are formed at the distal end portion of the second side wall portion 35 at predetermined intervals over the entire circumference.

  In the state where the first container 10 and the second container 20 are closed, the lid 30 is in contact with the upper surface of the overhang portion 18 (see FIG. 2), and the convex portion 33a of the first side wall portion 33 is in the second diameter expansion. It is in contact with the inner surface of the portion 17 (see FIG. 2). Moreover, the lid | cover 30 is difficult to remove | deviate upward by engaging the convex part 35a of the 2nd side wall part 35, and the lower end of the downward protrusion part 19 (refer FIG. 2).

  Next, with reference to FIG. 14, the cup-type container 1 in which the first container 10, the second container 20, and the lid 30 are combined will be described. FIG. 14 is an end view of the cup-type container. As shown in FIG. 14, the held portion 15 of the first container 10 is held by the holding portion 28 of the second container 20, so that the first container 10 and the second container 20 are combined. Specifically, the concave portion 16a of the first container 10 and the convex portion 24a of the second container 20 are engaged, and the enlarged diameter portion 17a and the downward projecting portion 19 of the first container 10 By sandwiching the overhang portion 18, the first container 10 and the second container 20 are combined. And the lid | cover 30 is combined with the 1st container 10 and the 2nd container 20 so that the opening 13 of the combined 1st container 10 may be closed. Specifically, in a state where the overhang portion 34 is in contact with the upper surface of the overhang portion 18 of the first container 10 and the convex portion 33a of the first side wall portion 33 is in contact with the inner surface of the second enlarged diameter portion 17 of the second container 10, By engaging the convex portion 35a of the second side wall portion 35 and the lower end of the downwardly projecting portion 19 of the first container 10, the lid 30 is difficult to be pulled upward.

  As described above, between the tapered portion 14 of the first container 10 and the tapered portion 23 of the second container 20 and between the bottom surface portion 11 of the first container 10 and the bottom surface portion 21 of the second container 20. A space S is formed in.

  Next, a method for manufacturing the first container 10 will be described. The first container 10, the second container 20, and the lid 30 are each formed by sheet molding, for example. Sheet molding is a molding method in which a sheet is closely attached to a mold by air pressure. In this case, a metal mold | die is a thing according to the external shape or internal shape of the 1st container 10, the 2nd container 20, and the lid | cover 30, respectively. That is, the mold for forming the first container 10 is a mold corresponding to the outer shape or inner shape of a substantially cylindrical container having a bottom surface portion and a side surface portion and opened upward, and the side surface portion is a bottom surface. A mold having a substantially tapered shape toward the portion and a side surface portion provided with a bellows portion bent in a bellows shape along a circumferential direction and a step portion bent so as to be stepped in the vertical direction is used.

As sheet forming, for example, pressure forming or vacuum forming is performed. The pressure forming is a method in which a sheet is heated and softened while being clamped on a mold, and the sheet is formed in close contact with the mold by the force of compressed air (3 to 6 kg / cm ² ). Vacuum forming is a method in which a sheet is formed by adhering the sheet to the mold in a state where the sheet is clamped on the mold and heated and softened and the space between the sheet and the mold is in a vacuum state.

  Next, the effect of the cup type container 1 which concerns on this embodiment is demonstrated.

  As shown in FIGS. 5A and 5B, the first container 10 of the cup-type container 1 according to the present embodiment has a bellows bent in a bellows shape along the circumferential direction of the side surface portion 12 at the tapered portion 14. Part 40. Of the bellows portion 40, the mountain fold portion 41 that protrudes to the outside of the side surface portion is a portion that comes into contact with another member (such as a label) that covers the first container 10, or a hand that directly holds the first container 10. .

  In this way, the contact area with the other member or the like is reduced as compared with the case where the mountain fold portion 41 is in contact with another member or the like, and the entire side surface is not in contact with the other member. be able to. This makes it difficult to transfer heat between the hot water poured into the first container 10 and the outside of the first container 10.

  As shown in FIG. 8, the taper portion 14 is provided with a step portion 51 that is bent so as to be stepped in the vertical direction. And the level | step-difference part 51 has the hook part 53 protruded inside. In the state where hot water is poured into the first container 10 as shown in FIG. Falling is prevented. Therefore, the instant noodle 60 can be held at a predetermined position where the step portion 51 is provided, and a sufficient space can be secured below the instant noodle. Thereby, hot water can be appropriately convected below the instant noodles 60.

  In addition, since both the bellows portion 40 and the step portion 51 of the first container 10 are formed by bending, a plurality of molds (convex mold and concave mold) such as injection molding are used in the molding process. It can be easily molded without going through complicated steps.

  Further, as shown in FIG. 7, the side surface portion 12 has the step portion 51 in the middle in the vertical direction of the taper portion 14, so that the instant noodle 60 can be held at the middle position inside the first container 10. it can. Thereby, it is possible to prevent the instant noodles 60 from moving to the lower side of the middle stage inside the first container 10, and it is possible to secure a region where hot water convects below the instant noodles 60 when hot water is poured. As described above, the stepped portion 51 is preferably provided in the middle of the tapered portion 14. If the stepped portion 51 is also provided at the lower stage of the tapered portion 14, the instant noodle 60 may be held on the lower side, which is not preferable from the viewpoint of hot water convection and ease of loosening of the noodle.

  Further, as shown in FIG. 7, the step portion 51 is provided in the bellows portion 40. As shown in FIG. 6, the bellows portion 40 has a valley fold portion 42 that protrudes to the inside of the side surface portion 12, and the valley fold portion 42 is a portion that contacts the instant noodle 60. The instant noodle 60 can be more effectively held by providing the step portion 51 in the valley fold portion 42 as well.

  Further, as shown in FIGS. 6 and 7, since the stepped portion 51 is provided over the entire circumference of the side surface portion 12, the instant noodle 60 can be easily held. Moreover, as shown in FIG. 6, since the bellows part 40 is provided over the perimeter of the side part 12, the hot water poured in the 1st container 10 mentioned above and the 1st container 10 exterior The effect which makes it difficult to transmit heat between can be show | played more. Moreover, the instant noodles 60 can be more easily held by setting the interval between the adjacent step portions 51 as shown in FIG. 8 to 2 to 8 mm. Moreover, while the thickness of the 1st container 10 shall be 0.1-0.5 mm, while being able to shape | mold easily by sheet | seat shaping | molding etc., a 1st container can be reduced in weight.

  Further, the second container 20 is further provided. As shown in FIG. 14, in the state where the first container 10 is accommodated in the second container 20, the tapered portion 14 of the first container 10 and the tapered portion 23 of the second container 20. The space S is formed between the first container 10 and the heat insulating property of the first container 10 can be improved. Even when the space S is formed in this way and the first container 10 and the second container 20 have a region that does not contact, the space S is formed at the upper end portion of the side surface portion 12 of the first container 10. Holding parts (first enlarged diameter part 16, second enlarged diameter part 17, overhanging part 18, and downward overhanging part 19) formed on the upper end part of the side part 22 of the second container 20 (first The first container 10 can be appropriately accommodated in the second container 20 (see FIG. 14) because it is held by the one enlarged part 24, the second enlarged part 25, and the overhang part 26).

  The first container 10 described above has a predetermined mold, that is, the side surface portion has a substantially tapered shape toward the bottom surface portion, and the side surface portion is stepped vertically with a bellows portion bent in a bellows shape along the circumferential direction. It is possible to manufacture using a mold provided with a stepped portion bent so as to have a shape. By manufacturing in this way, the first container 10 in which the side surface portion 12 is provided with the bellows portion 40 and the step portion 51 can be manufactured. Moreover, the 1st container 10 can be easily shape | molded without using a several metal mold | die like injection molding by manufacturing the 1st container 10 by sheet | seat shaping | molding using the metal mold | die mentioned above. In addition, the molded container can be made thin and lightweight.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the step portion 51 is described as being provided in the middle in the vertical direction of the taper portion 15, but is not limited thereto, and for example, the step portion is provided in the entire area of the taper portion 15. Alternatively, a stepped portion may be provided in all regions above the middle level. Further, the stepped portion may not be provided in the bellows portion.

  Although the first container 10 has been described as being molded by sheet molding, the first container 10 is not limited thereto, and may be molded by other molding techniques such as injection molding.

  Next, examples of the present invention will be described. In addition, this invention is not limited to a following example.

  The container according to the first embodiment (first container 10) has a height of 105 mm, is provided with a bellows portion 40 over the entire circumference of the side surface portion 12, and is located above the bottom surface portion 11 from a position 25mm above the bottom surface portion 11. A 50 mm region up to a position of 75 mm was defined as a step region 50. In the step region 50, step portions 51 are provided at intervals of 4 mm in the vertical direction over the entire circumference.

  Similar to the container according to Example 1, the container according to Example 2 had a height of 105 mm and was provided with a bellows part over the entire circumference of the side part. Further, a 75 mm region from the bottom surface portion to a position 75 mm above the bottom surface portion was defined as a step region. In the step region, step portions were provided at intervals of 4 mm in the vertical direction over the entire circumference. That is, the container according to Example 2 is different from the container according to Example 1 in that a step portion is provided also in a lower side region (region from the bottom surface portion to a position 25 mm above the bottom surface portion) in the side surface portion. .

  In the container according to Example 1 and the container according to Example 2, the same instant noodle 60 having a height of about 50 mm is accommodated, hot water is poured, and after a predetermined time, the convection of hot water and the ease of the instant noodle 60 being loosened are evaluated. did. The evaluation results are shown in Table 1.

表１に示すように、実施例２と比較して、実施例１は、お湯の対流、及び、お湯の対流に起因した麺のほぐれ易さの双方の点で良好であった。 ○: Good △: Almost good ×: Not good

As shown in Table 1, compared with Example 2, Example 1 was better in terms of both hot water convection and ease of loosening of noodles due to hot water convection.

  DESCRIPTION OF SYMBOLS 1 ... Cup type container, 10 ... 1st container, 11 ... Bottom face part, 11a ... Outer bottom face part, 11b ... Inner bottom face part, 12 ... Side face part, 13 ... Opening, 14 ... Tapered part, 15 ... Held part, 16 DESCRIPTION OF SYMBOLS 1st enlarged diameter part, 16a ... Concave part, 17 ... 2nd enlarged diameter part, 17a ... Convex part, 18 ... Overhang | projection part, 20 ... 2nd container, 21 ... Bottom part, 22 ... Side part , 23 ... taper part, 24 ... first enlarged diameter part, 24a ... convex part, 25 ... second enlarged diameter part, 26 ... overhang part, 27 ... opening, 28 ... holding part, 30 ... lid, 31 ... covering part, 32 ... Outer lid part, 33 ... First side wall part, 33a ... Convex part, 34 ... Overhang part, 35 ... Second side wall part, 35a ... Convex part, 40 ... Bellows part, 41 ... Mountain fold part, 42 ... Valley fold Part, 43 ... communication part, 50 ... step region, 51 ... step part, 52 ... step connection part, 53 ... hook part, 60 ... instant noodles.

Claims (6)

A cup-shaped container including a first cylindrical container having a bottom surface part and a side surface part, the upper part being opened,
The side portion is
While being substantially tapered toward the bottom surface,
A bellows portion bent into a bellows shape along the circumferential direction;
A step portion configured to be bent so as to be stepped in the vertical direction in the middle in the vertical direction, and to be able to hold the solid matter,
The step portion is provided in the bellows portion,
A plurality of the step portions are provided in the vertical direction of the side surface portion,
Distance between the stepped portions adjacent in the vertical direction is 2 to 8 mm, mosquito-up type container. The step portion is provided over the entire circumference of the side surface portion, the cup-type container according to claim 1 Symbol placement. The cup-shaped container according to claim 1 or 2 , wherein the bellows part is provided over the entire circumference of the side part. The cup-shaped container according to any one of claims 1 to 3 , wherein the thickness of the first container is 0.1 to 0.5 mm. A second container that has a bottom surface portion and a side surface portion, is formed in a substantially cylindrical shape having an upper opening, and contains the first container;
In a state in which the first container is housed in said second container, wherein between the first container side portion and the side surface portion of the second container are formed spaces, any claim 1-4 The cup-type container according to claim 1. In the first container, a held portion to be held by the second container is formed at the upper end of the side part,
The cup-shaped container according to claim 5 , wherein the second container is formed with a holding portion that holds the held portion at an upper end portion of the side surface portion.

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