JPH0794262B2 - Filling container for offering rice cake and its manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling container for offering rice cakes and a method for producing the same.

[0002]

2. Description of the Related Art A transparent or translucent thermoplastic synthetic resin is squeezed into a filling container in which an upper stage small container and a lower stage large container are concentrically circular in a plan view and are integrally molded in a communicating state inside. All rice cakes are poured, then heat sterilized, cooled and solidified, and sold as kagami mochi and other offering rice cakes in a hermetically sealed state by the container.As a method of manufacturing the filling container for the offering rice cake, For example, JP-A-5
There are two known methods, the vacuum forming method described in JP-A-5-85371 and the blow molding method such as Jikken 1-20302 already suggested by the present inventor.

[0003]

In the former vacuum forming method, as shown in FIGS. 24 and 25, a sheet material (A) having a constant thickness is used.
Is softened by heating to an intermediate temperature between the secondary dislocation point and the melt pour point, and is exhausted from the exhaust hole (2) of the vacuum forming die (1) to form a sheet material on the shaping surface of the die (1). (M)
By adsorbing the above-mentioned syrup, it is molded as a filling container for the rice cake made up of the small container (3) and the large container (4), and therefore, there are the following problems.

That is, since it is not a method of molding as a hollow body to the last, as described in Japanese Utility Model Publication No. 1-20302, the concave circumference located at the boundary between the upper stage small container (3) and the lower stage large container (4). To make the groove (5) stand as a large step, or to bring the opening edge of the rice cake pouring opening (6) opening on the bottom of the lower large container (4) toward the center as much as possible.
It is impossible to bend the circumferential surface of the large container (4) into a perfect and beautiful circular arc surface, and the rice cake pouring opening (6) is necessarily formed on the bottom surface of the large container (4). The full opening is made larger than the diameter (S) in the concave circumferential groove portion (5).

As a result, especially as a filling container for kagami mochi, the original realistic shape image of kagami mochi is impaired and the commercial value is lowered. Further, unless the sealing joint flange (7) is integrally projected outward from the opening edge of the rice cake pouring port (6), the seal cover (8) should be stably and firmly attached and supported. Also, the appearance of the seal cover (8) is exposed and the appearance shape as the above-mentioned rice cake is uncomfortable.

Furthermore, if this kind of filling container is used as a fixed amount container for rice cakes and the content volume is not kept constant as indicated, it will cause troubles with the consumer. Since it has a special shape with the concave circumferential groove portion (5), it is actually more difficult than expected to mold it as a container for filling the inner volume as indicated.

In this respect, as described above, if the whole bottom surface of the large container (4) has a large opening as the rice cake pouring opening (6), the rice cake may bulge out from here, or even slightly collapse. It is difficult for the operator to precisely inspect the movement. As a countermeasure, the device for pouring rice cakes must be, for example, a metering cylinder, and must be precisely poured in a metered amount by the control of the cylinder side, which necessitates specialization of the device.

Further, since the thickness of the container itself cannot be changed partially and intentionally in the above vacuum forming method, there is no choice but to uniformly reduce the thickness of the entire container or increase the thickness thereof. . In that case, if the whole container is made thin, hot rice cakes are poured into the inside of the container, and boil is also performed for sterilization as a result, so that the container itself is apt to be softly deformed by mistake. Since the rice cake pouring opening (6) on the bottom is extremely large, unless the sealing cover (8) for sealing is thickened, it will be unsightly and droop.

Even so, the seal cover (8)
When the container is made thicker than the container itself, the volume of the filled rice cake is reduced or subsided due to subsequent cooling, and the top surface of the container, which is thinner than the seal cover (8), becomes illegal. There is a great risk of collapse.

In other words, in the case of manufacturing by the above vacuum forming method, it is necessary to thicken the container itself, and even if the container is thickened evenly as a whole, the rice cake pouring port (6) Since the bottom surface is fully opened, if the seal cover (8) is peeled off or cut by the consumer, the rice cake can be taken out without trouble and the container itself must be vertically disassembled. It can be said that there is no sex.

On the other hand, in the blow molding method, since the filling container for rice cakes is formed as a hollow body from a pipe-shaped material (parison), as described in Jpn. Pat. Appln. By opening a relatively small rice cake pouring port, various problems of the above vacuum formed product can be alleviated.

However, if the rice cake pouring opening is small, the rice cake cannot be smoothly taken out from the seal cover only by peeling it off or cutting it.
The container itself can be cut with a knife such as a knife or knife.
Must be vertically disassembled. In that case, even if the blow-molded product is made thinner, the whole container will be more likely to be thermally deformed and the shape retention strength of the rice cake will be inferior. But there is
If the thickness of the entire container is made uniform, it becomes impossible to disassemble the container vertically.

[0013]

SUMMARY OF THE INVENTION The present invention intends to overcome such a problem. Therefore, in view of the structure as a filling container for offering rice cakes, firstly, an internal upper container and a lower container which communicate with each other are provided. And are integrally molded from a transparent or semi-transparent thermoplastic synthetic resin into a concentric circular shape in plan view, and in a substantially elliptical shape that is stacked in a side view, and are smaller than the diameter of the concave circumferential groove that forms the boundary between the large and small containers. In a filling container for offering rice cakes with a small circular rice cake pouring opening opened in the center of the bottom of the large container, along the virtual center meridian of the entire container, an indicator line that serves as an avoidance criterion during vertical disassembly. And the concave circumferential groove is biased to a position above the bisector of the entire height of the container by a certain distance, while at the intersection of the bisector and the central meridian, or 2 thereof. tentative than the partial line biases the lower position by a predetermined distance By increasing the thickness of the intersection of the latitude line and the central meridian as much as possible, the intersection is strengthened as a pair of undeformable opposing hip bones, and gradually increases away from both hip bones in the meridian direction and the latitude direction. By thinning, along an arbitrary meridian that intersects with the above-mentioned indicator lines, the entire container is characterized by being set so that it can be vertically disassembled without resistance with a blade,

Secondly, the inner small container and the lower large container, which communicate with each other, are integrally molded from a transparent or translucent thermoplastic synthetic resin into a concentric circular shape in a plan view and a substantially elliptical shape in a stacked view in a side view. At the same time, a circular rice cake pouring opening with a diameter smaller than the diameter of the concave circumferential groove that forms the boundary between the large and small containers, in the container for filling rice cakes opened in the center of the bottom surface of the large container, virtual center along the meridian to expose the indicator streaks as a avoidance criterion when vertically divided dismantled, by disposing the concave peripheral groove portion bisector of the whole vessel height, Part 2
A virtual parallel that is biased to a position lower than the bisector by a certain distance, and by thickening the intersection of the central meridian to the thickest, the intersection is strengthened as a pair of undeformable opposing hipbones, and By gradually thinning the wall away from both hip bones in the meridian and latitudinal directions, it is possible to vertically disassemble the entire container with a blade along an arbitrary meridian that intersects with the above index lines. It is characterized by having done.

As a method of manufacturing the above-mentioned filling container, firstly, the upper small container and the lower large container, which communicate with each other with the concave circumferential groove as a boundary, are concentric circles in plan view and are substantially elliptical in stacking in side view. When blow-molding a shaped container for filling rice cakes, the height of the entire container is increased by using a pair of split molds with the virtual center meridian of the entire container as the parting line.
A pipe-shaped parison made of transparent or translucent synthetic resin, aiming at the intersection of the virtual parallel that is deviated by a certain distance from the bisector of Sasano and the central meridian,
Along the diametrical direction of the whole container, it penetrates and crosses between the two mold halves facing each other, and then the mold halves are clamped in a sealed state on the circumferential surface of the parison, from the bottom of the large container. By piercing the gas ejection nozzle that moves forward and backward, and by blowing compressed air or gas from the nozzle into the hollow inside of the parison, and making the parison adhere to the shaped surface of the above-mentioned split mold in an expanded state, filling for votive cake Molded and solidified as a container, then open the mold, and by cutting the bottom center part of the filling container taken out from the split mold, a circular rice cake pouring opening with a diameter smaller than the diameter of the concave circumferential groove is formed. Characterized by opening

Secondly, there is provided a filling container for an offering rice cake in which the upper small container and the lower large container, which are communicated with each other with the concave circumferential groove as a boundary, are concentric circular in plan view and substantially elliptical in stacking in side view. At the time of blow molding, using a pair of split molds with the virtual center meridian of the entire container as the parting line, it is biased to a position below the bisector of the entire container height by a certain distance. While aiming at the intersection of the latitude line and the central meridian, a pipe-shaped parison made of a transparent or translucent synthetic resin is passed through between the two mold halves facing each other along the diameter direction of the entire container, After that, the mold is clamped in both split molds, and the gas ejection nozzle that moves forward and backward from the bottom of the large container is pierced into the circumferential surface of the parison that is sandwiched and fixed in a sealed state, and the parison is compressed into the hollow inside of the parison. A jar or gas is blown into the parison mold to bring the parison into close contact with the shaping surface of the split mold in an expanded state, whereby the parison is molded and solidified as a filling container for offering rice cake, and then the mold is opened until the mold is opened. By cutting the central portion of the bottom surface, a circular rice cake pouring opening having a diameter smaller than the diameter of the concave circumferential groove portion is opened.

[0017]

According to the construction of the first and second inventions relating to the filling container for offering rice cakes, a pair of the thickest facing hip bones in any of the containers makes it possible to use hot rice cakes and boiled pasteurized. Unauthorized softening deformation can be prevented, and the shape retention strength up to its cooling and solidification can be significantly enhanced. Nevertheless, the wall thickness of the container itself gradually increases as it moves away from both hip bones in the meridian and latitudinal directions. Since it has been changed to thin,
Along the arbitrary meridian that intersects with the index line, using the index line that appears on the virtual central meridian of the container as an avoidance mark,
The whole container can be vertically disassembled without resistance, just like making a cut with a knife such as a cutter knife or kitchen knife, and the rice cake can be immediately taken out. In particular, it goes without saying that the whole container can be cut and disassembled most easily along the meridian that is orthogonal to the above-mentioned index lines.

As a blow molding method for such a filled container, according to the constitutions of the above third and fourth inventions, in any of the cases, the parison is formed in the split mold along the diameter direction of the whole container. A gas jet nozzle is pierced from the bottom surface direction of the container into the circumferential surface of the parison that is sandwiched and fixed by the mold clamping, and the compressed air or gas is blown from the nozzle. Therefore, the parison does not substantially expand on the parting line (the central meridian of the entire container) of the two split molds, and the parison is partially expanded to the container as a thick and rigid hipbone that remains in its own thick state. The result will be shaped.

On the other hand, since the parison expands in the vertical and horizontal directions and in the radial direction from the center of the split mold except for the parting line, its expansion degree (from the center of the parison is defined). The wall thickness of the container changes thinly in proportion to the distance to the shape surface, and the filling container for rice cakes that is easy to vertically disassemble can be efficiently and rationally manufactured.

Further, in passing the parison through the diametrical direction of the entire container between the two mold halves facing each other, the central meridian of the entire container and the height of the entire container are divided into two.
Since it is aimed at the intersection with the imaginary latitude line that is biased downward by a certain distance from the bisector , the top surface of the container can be vertically disassembled from this point and thinned, while its relative The bottom surface of the container can be thickened in a stable manner due to its stationary use and heat sealing of the seal cover, and the stroke of the nozzle that moves forward and backward from the bottom surface of the container to pierce the circumferential surface of the parison, There is an advantage that the mechanism can be set as short as possible.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIGS. 1 to 3 show a completed state of a filling container for offering rice cakes according to the present invention, and FIGS. Although the respective molding states are shown, the filling container is in a so-called stacked form of an upper stage small container (11) and a lower stage large container (12) which communicate with each other inside, and the large and small containers (12) (1
1) forms an overall concentric circle in plan view.

Moreover, when viewed from the side, each of the large and small containers (12) and (11) has a substantially elliptical shape extending elongated along the latitude line (lateral direction), and the upper small container (11). The highest convex curved surface at the central portion (North Pole) is the one which is blow-molded integrally from transparent or opalescent translucent polyethylene, polypropylene and other thermoplastic synthetic resins.

(13) is the large and small containers (12) and (11)
It is a concave circumferential groove that is depressed at the boundary position of, and is smoothly continuous with the large and small containers (12) and (11) while drawing a small arc surface. In this regard, in the illustrated embodiment, the concave circumferential groove portion (13)
Is biased to a position above the bisector (O-O) of the entire container height (H) by a certain constant distance (L1).

That is, with respect to the height (H) of the entire container,
Height (h1) (h2) in large and small containers (12) (11)
By making the ratio of) different within the numerical range of preferably 52:48 to 55:45, the entire container is given the realistic contour shape of the original rice cake.

Further, in terms of giving a contour shape that does not cause a sense of discomfort, regarding the difference in diameter between the large and small containers (12) and (11), assuming that the diameter (d1) of the large container (12) is 100, For this, the diameter of the small container (11) (d
It is desirable to dimension 2) in a ratio of about 82-85, respectively.

In this case, the concave circumferential groove portion (13) is smoothly continuous with the large and small containers (12) and (11) while slightly describing the arcuate surface of the lid, which will be described later. The mochi pouring and filling action can be performed extremely smoothly and without voids.

Incidentally, as an example in FIGS. 1 to 8, a filling container having an internal capacity of −500 g is illustrated in an actual size, and the height (H) of the entire container is about 78 mm, and the upper small container (11). ) Height (h2) -about 36.5 mm, small container (11) diameter (d2) -about 88 mm, lower large container (12) height (h1) -about 41.5 mm, also large container ( 12) diameter (d1) -about 107 mm, caliber of concave circumferential groove (13) (s1) -about 75 mm, large container (1
The diameter (d3) at the bottom where 2) is grounded is set to about 78 mm.

However, due to the difference in the diameters (d1) and (d2) of the large and small containers (12) and (11), the small containers (11) are concentric circles stacked at the upper position of the large container (12). Then, the concave circumferential groove portion (1
3) on the bisector (O-O) of the entire container height (H) ,
You may arrange so that it may correspond.

Further, as is apparent from the modified embodiment of FIG. 9 corresponding to FIG. 3, the seal cover joint flange (14) having a diameter smaller than the diameter (d1) of the large container (12).
Can be continuously and integrally projected from the bottom surface of the large container (12). It is also conceivable to model the bottom surface of the large container (12) as a concave curved surface that is deepest in the center (south pole).

(Y-Y) is a virtual center meridian that connects the north pole and the south pole of the entire container, and is located at the parting line of the split mold described later. An index line (15) serving as an avoidance criterion when vertically disassembling the entire container is shown above.

That is, when the mold is opened after blow molding the filled container, an ear-shaped so-called burr (16) as shown in FIGS. 10 to 12 is formed on the central meridian (Y-Y) of the entire container corresponding to the parting line. ) Will remain, and the burr (1
When 6) is broken off by a worker, ridge-like traces are exposed on the surface of the entire container.
It is considered that it can be used as it is as 5).

Further, (17) is a rice cake pouring opening opened at the center of the bottom surface of the large container (12), and has a circular shape having a diameter smaller than the diameter (s1) of the concave circumferential groove (13). There is. In this respect, in the filling container containing 500 g, the diameter (s1) of the concave groove portion (13) is about 75 mm, while the diameter (s2) of the rice cake pouring opening (17) is about 43 mm.
Although it is sized to mm, the rice cake pouring opening (1
The diameter (s2) of 7) may be appropriately changed in size.

(18) is a group of concentric circle-shaped melting projections provided on the bottom surface of the large container (12) so as to surround the periphery of the rice cake pouring opening (17), and its cross section is released. It has an easy-tapered triangle. If such a fusion projection group (18) is shaped, the fusion projection group (18) is quickly melted under the pressure of a hot platen (not shown) at the time of heat-sealing a seal cover described later. However, it can be said that it is suitable because it can be heat-sealed efficiently.

The above-mentioned filling container is blow-molded as follows, so that its thickness is not uniform as a whole, and its thickness is intentionally / partially changed.

That is, in FIGS. 13 to 17 showing the molding process of the filling container, (19) is a pair of split molds facing each other, and the virtual center meridian (Y-
Y) is used as a parting line (20) to open and close in opposite directions. In that case, large and small containers (1
2) The circumferential surface of (11) and the top surface of the small container (11) are shaped by the shaping surface of the split mold (19), but the bottom surface of the large container (12). Only each split mold (1
It is designed to be shaped by an accessory mold (22) that is separately assembled and fixed to 9) via a bolt (21) or the like. The accessory mold (22) forms a part of the split mold (19).

Further, (23) is a gas pressure feeding cylinder integrally attached to either one of the two split molds (19) through bolts or the like, and its piston rod has a sharp needle-like tip. As a gas ejection nozzle (24) forming a parting line (20) of the split mold (19)
While being located on the upper side, it is adapted to be moved forward and backward toward the center portion (south pole point) of the bottom surface of the large container (12).

At the time of molding, the two split molds (19) are first opened as shown in FIGS. 13 and 14, and the bisector (O--O) of the entire container height (H ) is used. Also, while aiming at the intersection (P) between the virtual parallel (XX) that is biased to the lower position (bottom side) by a fixed distance (L2) and the central meridian (YY), polyethylene or other synthetic resin A pipe-shaped material (parison) (M) consisting of a die (19) is cut from a die (not shown) of the extruder along the diametrical direction of the entire container as shown in FIGS.
The two split molds (19) are clamped by feeding them so as to pass through between the two facing each other.

By doing so, both ends of the parison (M) in the lengthwise direction are closed by mold clamping as shown in FIG. 16, and the parison (M) is clamped and fixed as a completely sealed hollow body.

Then, next, the cylinder (23) is operated to advance from the bottom surface direction of the large container (12), and the nozzle (24) is used as a needle to clean the circumferential surface of the parison (M) as shown in FIG. Stick and pierce gas (25)
Is opened, and the compression air is blown into the hollow inside of the parison (M) through the blowing hole (25).

Then, as shown in FIGS. 15 to 17, the parison (M) expands toward the shaping surface of the split mold (19), and eventually adheres closely to the shaping surface.
It is also cooled by the cooling water distributed to the mold (19), and is molded and solidified as the filling container.
It goes without saying that the above-mentioned bottom surface melted projection group (18) is also shaped by the accessory mold (19).

During the molding, the parison (M) is fed in a state of traversing through the diametrical direction of the entire container while aiming at the intersection (P), so that the expansion degree thereof is as shown in FIG. As indicated by the arrow 16, the difference between the crossing portion (P) and the shaping surface of the split molds (19) is proportional to the length of the distance between the shaping surfaces of the split molds (19).

That is, the both ends of the parison (M) fed toward the intersection (P) have two split molds (1).
As the mold is clamped in 9), it is clamped and fixed in a closed state as shown in FIG. 16, so even if the compression air is blown in,
As the degree of expansion is substantially zero, it does not expand at all,
The parison (M) remains while maintaining its material thickness.

This portion forms the rigid, thick hip bone (26) of the product-filled container, as suggested by FIGS. The opposite ends of the parison (M) are the thickest pair of hip bones (26) by a length corresponding to the diameter (d4) of the parison (M), and the longitudinal direction of the container itself.
Therefore, there is no possibility of being deformed illegally. In addition, burrs (16) are additionally generated at both ends of the parison (M) clamped and fixed by the mold clamping.

On the other hand, most of the parison (M) except both ends in the longitudinal direction are not directly restrained by the split mold (19). As the distance from (26) increases in the longitude and latitude directions of the entire container, the wall thickness gradually changes.

In this case, the intersection (P) is the height of the entire container.
(H) bisector (O-O), a certain distance (L
2) Since it is on the imaginary parallel (XX) that is biased downward, the degree of expansion of the parison (M) along the meridian direction (longitudinal direction) of the container is greater at the north pole than at the south pole. Larger, resulting in a thinner profile on the top than on the bottom of the container.

Further, the crossing portion (P) is a split mold (1
Since it is on the central meridian (Y-Y) of the entire container corresponding to the parting line (20) of 9), the expansion degree of the parison (M) along the latitudinal direction (lateral direction) of the container is shown in FIG. As is clear from ~ 8, the central meridian (Y-
Y) becomes gradual and evenly thins away from either east or west of the azimuth direction, and most on the virtual parallel (Z-Z) perpendicular to the central meridian (Y-Y). The result is a thin model.

As a reminder, the blow molding method is known as a means for manufacturing various bottles, but in the blow molding of the bottles, the parison is the product-from the mouth portion (North Pole) of the bottle to the center of the bottom surface. In addition to being fed along the (south pole), the compression air is blown from the north pole or the south pole, so that the distribution state in which the thickness changes as in the present invention can be obtained. I can't.

In the case of bottles, unlike the filling container for offering rice cakes, which is the object of the present invention, it is not possible to cut and disassemble the container afterward to take out the rice cake of the contents. It can be said that there is no need or reason to change the wall thickness intentionally or partially as described above.

In this respect, since the present invention is specially blow-molded as described above, the drawing is made with the index lines (15) shown on the central meridian (Y-Y) of the entire container as a reference mark. As is clear from 18, 19
In order to avoid 5), the above meridian (Z-
Z) along with blades such as cutter knives and knives (2
By making the cuts (28) in 7), the whole container can be vertically disassembled in the lightest and most efficient manner.

However, as long as the index streak (15) is avoided, the entire container is longitudinally moved by the blade (27) even along an arbitrary virtual meridian (ZZ) that keeps a crossing angle that is non-perpendicular to this. Of course, it can be disassembled.

Incidentally, in the above-mentioned 500 g filled container, as is apparent from FIGS. 7 and 8 showing the distribution state of the change in wall thickness, the central part (north pole) (a) of the top surface of the small container (11) is shown. Thickness-about 0.7 mm, thickness at the central portion (south pole) (b) of the bottom surface of the large container (12) -about 1.
2 mm, the equator line of the small container (11), the equator line of the large container (12) and the concave circumferential groove portion (13) are respectively the central meridian (Y-
Y), thicknesses at portions (c), (d), and (e) -about 2.5 mm, about 2.3 mm and about 1.0 mm, also the equator line of the small container (11) and the large container (12). (F) (g) where the equatorial line and the concave groove portion (13) intersect the virtual meridian (ZZ) orthogonal to the central meridian (Y-Y).
Wall thickness in (h) -dimensioned as about 0.6 mm, about 0.58 mm and about 0.8 mm.

In the illustrated embodiment, the total height (H) of the container
A virtual parallel (XX) that is biased to a position lower than the bisector (OO) by a certain distance (L2), and a central meridian (YY) that corresponds to the parting line (20). crossover portion was set to best thickening the (P), the
As long as the concave circumferential groove portion (13) is arranged so as to be offset by a certain distance (L1) from the bisector (O-O), the bisector (O-O) and Chuo meridian (Y-
In order to make the crossing portion (P) with Y) the thickest, the parison (M) is set in a state of penetrating and crossing along the diametrical direction of the entire container so as to aim at the crossing portion (P). 1
It may be determined that the sheet is fed between the mutually facing portions of 9).

As the molding material for the above-mentioned 500 g filling container, a parison (M) having a diameter (d4) of about 32 mm is used in the figure.
The diameter (d4) of the parison (M) above was measured when molding various filled containers that were slightly changed to 3.8 kg, etc.
It goes without saying that the thickness and wall thickness should be changed accordingly.

In any case, since the filling container molded and solidified as described above is still a semi-finished product as a hollow body,
After that, by opening the mold, it is taken out from both split molds (19), and then the central part of the bottom surface of the large container (12) is cut using a drilling machine or other appropriate mechanical equipment, The circular rice cake pouring opening (17) having a diameter smaller than the diameter (s1) of the concave circumferential groove portion (13) is opened, and the product is finished as a product-filling container. Of course, the gas blowing holes (25) remaining small in the center of the bottom face are also removed all at once by the cutting process.

In that case, as suggested by the modified embodiment of FIG. 20, a cutter (29) that moves forward into the mold in cooperation with the backward movement of the cylinder (23) is used, and the cutter (29) is used. The filling container is swung by a driving source (30) such as a motor to mold and solidify the filling container, and before the mold (19) is opened, the cutter (29) is used to move the rice cake pouring port (17) to the container. It may be configured to open to the central portion of the bottom surface.

In particular, when a gas such as liquid titanium is used instead of the air as the compressed gas blown from the nozzle (24), the gas can quickly cool and solidify the molded container. The punching mechanism of the rice cake pouring opening (17) as shown in the above-mentioned modified embodiment 20 can be used without any trouble, and the mass production effect of the container can be further enhanced.

FIG. 21 shows a filling operation state of the rice cake in the above-mentioned container.
The container is fitted into the inside of 1) with the rice cake pouring opening (17) facing upward and set, and then the rotation receiving cylinder (31) is rotated around the axis of the vertical rotary shaft (32). The fresh rice cake is poured into the container through the extrusion screw and the rice cake injection nozzle (33) to fill the container.

Then, the rotary centrifugal force results in quick and complete filling of the rice cake without the risk of air pockets in the container. Therefore, after the filling, the seal cover (34) is heat-sealed to the center of the bottom surface of the container with a hot platen (not shown) or the like, and the rice cake pouring port (17) is sealed as shown in FIG.

As the seal cover (34), as is clear from FIG. 23, a back sheet (34a) made of a synthetic resin such as polyethylene which is the same as that of the container itself, and a synthetic material such as nylon having a higher heat resistance than this. A backing sheet (using an interleaf sheet with a front sheet (34b) made of a resin and having an overall thickness (t) thinner than the thinnest portion of the container (for example, about 85 microns)) 34
The a) is joined to the bottom surface of the container and then welded and integrated to the bottom surface.

By doing so, in combination with the fact that the above-mentioned fused projection group (18) is provided, it is possible to seal efficiently with a high affinity, and the heterogeneous surface sheet (34b).
Even the display characters printed on the can be protected from the adverse effects of heating during heat sealing and rubbing during stationary use,
The durability can be improved.

[0061]

As described above, in the present invention, the upper small container (11) and the lower large container (12) communicating with each other are made of transparent or translucent thermoplastic synthetic resin in a concentric circular shape in plan view. And a circular rice cake pouring opening that is integrally formed into a substantially elliptical shape that is stacked in a side view, and that is smaller than the diameter (S1) of the concave circumferential groove (13) that forms the boundary between the large and small containers (12) (11). (17) is a filling container for offering rice cakes opened in the central portion of the bottom surface of the large container (12), along with a virtual central meridian (Y-Y) of the entire container, as an avoidance criterion at the time of vertical disassembly. The index groove (15) is exposed, and the concave circumferential groove portion (13) is divided into bisectors (O- ) of the entire container height (H).
On the other hand, it is biased upward by a certain distance (L1) from O), while the bisector (O-O) and the central meridian (Y-Y).
Or an imaginary parallel line (X- which is deviated to a position below the bisector (O-O) thereof by a constant distance (L2).
X) and the central meridian (Y-Y) are thickest at the intersection, thereby strengthening the intersection as a pair of undeformable opposing hip bones (26) and both hipbones (26). By gradually thinning the wall of the container along the direction of longitude and latitude, the entire container is longitudinally divided by a blade (27) along an arbitrary meridian (Z-Z) intersecting with the index line (15). Since the setting is made so that it can be disassembled, there is an effect that the problems of the prior art described at the beginning based on FIGS. 24 and 25 can be improved in a simple overall structure.

That is, according to the configuration of the present invention, the pair of hip bones (26) facing the filling container are partially formed as the thickest part, so that the hip bones (26) are hot and fresh. It does not cause softening and deformation due to rice cake or boiling after pouring, and the shape retention strength until it is cooled and solidified can be maintained, and the container can be handled stably.

In spite of this, as the distance from the hip bone (26) increases in the meridian direction and the latitude direction of the entire container, the thickness of the container gradually changes and the imaginary center of the entire container is changed. On the meridian (Y-Y), the index streak (15), which serves as an avoidance criterion at the time of vertical disassembly, is also displayed. Therefore, while avoiding the index streak (15), any meridian ( By engraving the notches (28) with a knife (27) such as a kitchen knife and a knife that are common in ordinary households along ZZ), the entire container can be easily disassembled vertically, and it can be immediately consumed by consumers. You can take out the rice cake.

In this case, the concave circumferential groove portion (13) forming the boundary position between the large and small containers (12) and (11) has the entire container height (H).
The upper surface of the small container (11) is thinner than the bottom surface of the large container (12) because it is biased upward by a certain distance (L1) from the bisector (OO). Also from this point of view, the entire container can be cut and disassembled from above without resistance by the blade (27).

Such an effect can be achieved in exactly the same manner by adopting the configuration of the second invention described in claim 2, and in particular, the meridian (Y-Y) orthogonal to the central meridian (Y-Y) is used. On ZZ), the wall thickness of the entire container is formed to be the thinnest, so that the vertical disassembly can be performed most easily along the meridian (ZZ).

Further, as a manufacturing method, the upper small container (11) and the lower large container (12), which communicate with each other with the concave circumferential groove (13) as a boundary, are substantially concentric circles in a plan view and are almost stacked in a side view. When blow-molding an elliptical filling container for offering rice cakes, the virtual center meridian (Y-Y) of the entire container
Using a pair of split molds (19) with the parting line (20) as the partitioning line (20), the container is positioned below the bisector (O-O) of the entire container height (H) by a constant distance (L2). A pipe-shaped parison (M) made of a transparent or translucent synthetic resin is placed in a container while aiming at an intersection (P) between a virtual parallel (XX) that is biased to the center of the line and the central meridian (YY). The circumferential surface of the parison (M) clamped and fixed in a sealed state by crossing the split dies (19) so as to pass through each other along the entire diametrical direction, and then clamping the split dies (19). The gas ejection nozzle (24) that moves back and forth from the bottom of the large container (12) is pierced into the
By blowing compressed air or gas from 4) into the hollow interior of the parison (M) and bringing the parison (M) into close contact with the shaping surface of the split mold (19) in an expanded state,
By molding and solidifying as a filling container for offering rice cakes, then opening the mold, and cutting the central portion of the bottom surface of the filling container taken out from the split mold (19), the diameter at the concave circumferential groove (13) ( Since the circular rice cake pouring opening (17), which is smaller in diameter than S1), is opened, unlike the blow molding method that is widely used in the production of various bottles, the wall thickness is partially and intentionally. There is an effect that the container for offering rice cakes with various thicknesses can be mass-produced extremely easily.

Particularly, as is clear from the fourth invention of claim 4, after the solidification of the filling container is completed and before the split mold (19) is opened, the rice cake pouring port (17) to the center of the bottom surface of the container is formed. If the cutting process described above is carried out, the above-mentioned mass production effect can be further enhanced, which can be said to be remarkably practical.

[Brief description of drawings]

FIG. 1 is an overall schematic perspective view showing a filling container for offering rice cakes according to the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a plan view showing a blow molding state of the container.

FIG. 5 is a bottom view of FIG.

6 is a sectional view taken along line 6-6 of FIG.

7 is a sectional view taken along line 7-7 of FIG.

FIG. 8 is an explanatory plan view showing a distribution state in which the thickness of the container changes.

9 is a cross-sectional view showing a modified example of the container corresponding to FIG.

FIG. 10 is a schematic perspective view showing a burr attached to a container immediately after molding.

11 is a side view of FIG.

12 is a plan view of FIG.

FIG. 13 is a cross-sectional view showing a mold opening state of a split mold for blow molding and a positional relationship between the parison and the parison.

14 is a sectional view taken along line 14-14 of FIG.

FIG. 15 is a sectional view of a mold clamped state corresponding to FIG.

16 is a sectional view taken along line 16-16 of FIG.

FIG. 17 is a cross-sectional view corresponding to FIG. 15, showing a blow-molded state of the container due to expansion of the parison.

FIG. 18 is a schematic perspective view showing a vertical disassembling operation of the container.

FIG. 19 is a perspective view showing a dismantling operation subsequent to FIG.

20 is a partial cross-sectional view showing a modified example of the bottom surface cutting mechanism corresponding to FIG.

FIG. 21 is a cross-sectional view showing a filling action state of rice cake in a container.

FIG. 22 is a cross-sectional view showing a sealed packing state of rice cake in a container.

23 is a partially enlarged cross-sectional view taken along the line 23-23 of FIG.

FIG. 24 is a cross-sectional view showing a molding state of a filling container for a rice cake served by a conventional vacuum forming method.

FIG. 25 is a cross-sectional view showing a sealed packaging state of rice cake in the container.

[Explanation of Codes] (11) -Upper Small Container (12) -Lower Large Container (13) -Concave Circumferential Groove (15) -Indicator Lines (19) -Cleaving Die (20) -Parting Line (23)- Cylinder for gas pressure feeding (24), gas ejection nozzle (25), gas injection hole (26), hip bone (27), blade (28), cut (34), seal cover (M), parison (P), ... Crossing part (O-O), bisector of entire container height (XX), virtual latitude (Y-Y), virtual center meridian (ZZ), virtual meridian (L1) (L2), constant Distance (s1) / caliber of concave groove

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B65D 1/09

Claims (4)

[Claims] 1. An upper communicating small container (11) and a lower large container (12) communicating with each other are made of transparent or translucent thermoplastic synthetic resin and are concentric circular in plan view, and are substantially elliptical in stacking in side view. The rice cake pouring port (17), which has a circular shape and is smaller than the diameter (S1) of the concave circumferential groove portion (13) that forms the boundary of the large and small containers (12) and (11), is formed into the large container. In the container for filling rice cake opened in the center of the bottom surface of (12), the index line (15) that serves as an avoidance criterion at the time of vertical disassembly is displayed along the virtual center meridian (Y-Y) of the entire container. issued thereby, the concave peripheral groove (13) the entire container height bisector (H) (O-O) than while biasing a predetermined distance (L1) only the upper position, the bisector ( It is either the intersection of OO) and the central meridian (Y-Y), or its bisector ( OO ). Rimo fixed distance (L
2) By making the intersecting portion of the virtual latitude (XX) that is biased downwardly by the downward position and the central meridian (YY) the thickest part, the intersecting portion cannot be deformed and the pair of opposing hipbones ( 26) and gradually decrease in thickness with increasing distance from both hip bones (26) in the meridian direction and the latitudinal direction, so that an arbitrary meridian (Z-Z) intersecting with the index streak (15) can be obtained. Along with this, the filling container for offering rice cakes is characterized in that the whole container is set so that it can be vertically disassembled with a knife (27). 2. An internal communicating upper small container (11) and a lower large container (12) are made of a transparent or translucent thermoplastic synthetic resin and have a concentric circular shape in plan view and a substantially elliptical shape in stacking in side view. The rice cake pouring port (17), which has a circular shape and is smaller than the diameter (S1) of the concave circumferential groove portion (13) that forms the boundary of the large and small containers (12) and (11), is formed into the large container. In the container for filling rice cake opened in the center of the bottom surface of (12), the index line (15) that serves as an avoidance criterion at the time of vertical disassembly is displayed along the virtual center meridian (Y-Y) of the entire container. Then, the concave circumferential groove portion (13) is arranged on the bisector (O-O) of the entire height (H) of the container, and a constant distance (L2) from the bisector (O-O). ), The intersection of the imaginary latitude line (X-X) and the central meridian (Y-Y). By increasing the wall thickness to the maximum extent, the crossing part is strengthened as a pair of undeformable opposing hip bones (26), and gradually thinned away from both hip bones (26) in the meridian direction and the latitudinal direction. According to the above, the filling container for offering rice cakes is set so that the entire container can be vertically disassembled by the blade (27) along an arbitrary meridian (ZZ) intersecting with the index lines (15). 3. An upper small container (11) and a lower large container (12), which communicate with each other with a concave circumferential groove (13) as a boundary, have a concentric circular shape in a plan view and a substantially elliptical shape in a stack in a side view. In blow molding the filling container for eggplant offering rice cakes, the entire container is formed by using a pair of split molds (19) having a virtual center meridian (Y-Y) of the entire container as a parting line (20). A virtual parallel (XX) that is biased to a position below the bisector (O-O) of the height (H) by a constant distance (L2).
And a pipe-shaped parison (M) made of a transparent or semitransparent synthetic resin while aiming at an intersection (P) with the central meridian (Y-Y), a split bar along the diameter direction of the entire container. A large container (1) is attached to the circumferential surface of the parison (M) which is sandwiched and fixed in a hermetically sealed state by crossing the molds (19) so as to pass through each other and then clamping the two mold halves (19).
2) Gas ejection nozzle (2
4) is pierced and compressed air or gas is blown from the nozzle (24) into the hollow inside of the parison (M), and the parison (M) is brought into close contact with the shaping surface of the split mold (19) in an expanded state. By doing so, it is molded and solidified as a filling container for offering rice cakes, then the mold is opened, and the bottom center portion of the filling container taken out from the split mold (19) is cut,
A method for producing a filling container for offering rice cake, which comprises opening a circular rice cake pouring opening (17) having a diameter smaller than the diameter (S1) of the concave circumferential groove portion (13). 4. An upper small container (11) and a lower large container (12), which communicate with each other with a concave circumferential groove (13) as a boundary, have a concentric circular shape in a plan view and a substantially elliptical shape in a stacked view in a side view. In blow molding the filling container for eggplant offering rice cakes, the entire container is formed by using a pair of split molds (19) having a virtual center meridian (Y-Y) of the entire container as a parting line (20). A virtual parallel (XX) that is biased to a position below the bisector (O-O) of the height (H) by a constant distance (L2).
And a pipe-shaped parison (M) made of a transparent or semitransparent synthetic resin while aiming at an intersection (P) with the central meridian (Y-Y), a split bar along the diameter direction of the entire container. A large container (1) is attached to the circumferential surface of the parison (M) which is sandwiched and fixed in a hermetically-sealed state by crossing the molds (19) so that they pass through each other, and then by clamping both split molds (19).
2) Gas ejection nozzle (2
4) is pierced and compressed air or gas is blown from the nozzle (24) into the hollow inside of the parison (M), and the parison (M) is brought into close contact with the shaping surface of the split mold (19) in an expanded state. By doing so, it is molded and solidified as a filling container for offering rice cakes, and by cutting the central portion of the bottom surface of the filling container until the mold is opened, the concave circumferential groove portion (13) is formed.
Circular rice cake pouring mouth (1
7) A method for manufacturing a filling container for offering rice cakes, which comprises opening