JPS6358547B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a packaged rice ball, a method for producing the same, and a packaging material. An inverted triangular rice ball is wrapped inside the material, and when the lower end of the inner packaging material, which protrudes from the insertion hole at the bottom of the outer packaging material, is pulled out, the surface of the exposed rice ball is covered with dried seaweed. The present invention relates to a packaged rice ball in which crispy seaweed-wrapped rice balls remain in the outer packaging material, a manufacturing method thereof that can be rationally and automatically produced, and a packaging material therefor.

(Prior art and its problems) A rice ball and a sheet of nori are separated and packaged using a packaging material, and just before eating, the packaging material is removed and the dried sheet nori is wrapped around the rice ball to complete a crispy seaweed-wrapped rice ball. has been tried many times.

Among them, as shown in FIG. 8, an inverted triangular rice ball 50 is double-layered with an inner bag 52 of the same shape with an open top and an outer bag 56 with an insertion hole 54 in the bottom and the other part sealed. A sheet of seaweed 58 is interposed between both bags, and the lower bottom part 60 of the inner bag is wrapped in the outer bag 5.
When eating the rice ball, the lower bottom part 60 of the inner bag 52 is pulled downward to bring the plate nori 58 into close contact with the rice ball, and the bonito onigiri 50 is pulled downward together with the inner bag 52. There is a packaged rice ball in which the rice ball is compressed from the outside by the taper of the outer bag 56 by the applied force, so that the crispy seaweed-wrapped rice ball with a firm shape can be eaten hygienically.

This packaged rice ball is excellent in that it can be completed as it is with a single touch operation by pulling out the protrusion of the inner bag.

However, the above-mentioned packaging material is made by cutting out two sheets and forming it into a flat bag, and it requires the work of inserting the rice balls into the inner bag and the work of inserting the inner-wrapped rice balls into the outer bag. In the case of manual operation, a funnel-shaped auxiliary tool is used to open and insert bags, but this is not efficient and is particularly difficult to automate the manufacturing process.

In addition, if the seaweed is inserted into the inner wall of the outer bag in advance, the protruding lower end of the inner bag will catch on the rough surface of the seaweed, making it difficult to protrude through the insertion hole of the outer bag, so wrap the seaweed around the inner bag. The process is very complicated, as it has to be inserted into the outer bag.

(Objective) The object of the present invention is to solve the above-mentioned drawbacks, and to realize extremely simple packaging by folding a flat sheet for the inner and/or outer wrapping material of the rice ball and packaging it inside. The purpose of the present invention is to provide rice balls, their manufacturing method, and packaging materials that are simple and reliable.

(Structure) The characteristics of this product are as follows: (1) The inner packaging material for the rice ball is shaped like an inverted triangular bag with an open top end, cut open along the vertical center image, and unfolded.

(2) An outer packaging material for a packaged rice ball having the above-mentioned form and having the top of the bottom removed so that the top of the bottom is open when it is shaped into a bag.

(3) Wrap seaweed, etc. around the inner wrapped rice ball that exposes the triangular rice ball by pulling the lower end of the packaging material downward, and then insert it into the outer packaging material in (2) and insert it into the open bottom of the outer packaging material. A packaged rice ball with a tension part of the inner packaging material protruding from the inside.

(4) Wrap seaweed around the rice ball wrapped using the inner packaging material in (1), place it in an outer packaging bag of the same shape with an open bottom, and insert the inner packaging from the open bottom of the outer packaging bag. A wrapped rice ball with a protruding tension part.

(5) Wrap seaweed around the rice ball wrapped in the inner packaging material in (1), place it in the outer packaging bag in (2), and let the tension part of the inner packaging material protrude from the open bottom of the outer packaging bag. wrapped rice balls.

(6) A method for producing a packaged rice ball according to (3) using a recessed part having the same shape as the rice ball.

(7) A method for producing a packaged rice ball according to (4) using a recessed part having the same shape as the rice ball.

(8) A method for producing a packaged rice ball according to (5) using a recessed part having the same shape as the rice ball.

(Example) Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the inner packaging material. 10 is an inverted triangle that is almost the same shape as an inverted equilateral triangle rice ball. The back side of the bag, which originally had an open top and had an inverted triangle as its basic shape, was cut open along the imaginary vertical center line 11, and the left and right sides 12a and 12b of the inverted triangle 10 were developed as axes of symmetry, creating an imaginary end edge 13A. ,13B
becomes. Actually, these virtual edge portions 13A, 13B
The adhesive shield 14a extends further outward,
14b is provided.

Further, a placing portion 1 also shaped like the inverted triangle 10 is provided for placing the rice ball 16 on the inside of the inverted triangle 10.
Provide 0A. Each side 12a of this placement part 10A,
The sides 10a, 10b parallel to 12b are the sides 12a,
Virtual edge portions 13A, 13B with 12b as the axis of symmetry
Virtual lines 13a and 13b are provided above. The distance L between the virtual lines 13a, 13b and the sides 10a, 10b is the thickness of the rice ball 16.

A suitable material for the inner wrapping material 15 having this shape is a flexible synthetic resin film.

The placing portion 10 of the inverted triangle 10 of this inner packaging material 15
Place rice ball 16 of the same shape on A. In this case, the inner packaging material 15 is placed on a table having an identical recessed fitting part (not shown) that is slightly larger than the rice ball so that the inverted triangular part 10 overlaps the recessed fitting part, and then When the empty rice ball 16 is placed on the rice ball 16, the rice ball 16 sinks into the recessed part while pushing the inner wrapping material 15, and the distance L between the inner wrapping materials 15 along the left and right side walls of the rice ball 16 is set at both the left and right sides 10a and 10b as bending line parts. Stand up, fold the imaginary lines 13a, 13b along the back side of the rice ball 16, wrap the rice ball 16, and glue the edges 14a, 1.
4b are overlapped, spot seal or sellotape the parts, and take them out from the recessed fitting part. Appropriately, the recessed fitting portion should be about half the thickness of the rice ball 16.

Next, as shown in FIG. 2, dried seaweed 21 is placed on top of the recessed fitting part 20, and the inner-wrapped rice ball 22 (wrapped with the inner wrapping material 15) is placed on top of it. When placed, the inner wrapped rice ball 22 sinks into the recessed fitting part 20 while pushing the seaweed 21, and the inner wrapped rice ball 22 rises along the left and right side walls of the rice ball 22, so that the inner wrapped rice ball 22 wraps around the back side of the inner wrapped rice ball 22. Make it.

Finally, an outer packaging material 32 (see Fig. 3) is made of the same shape as the inner packaging material 15, which is slightly larger than the inner packaging material 15, and is cut by cutting the bottom top part parallel to the upper edge 30.
is also placed on the recessed fitting part 20, and then the inner wrapped rice ball 22 wrapped with seaweed 21 is placed on top of it, it sinks into the recessed fitting part, and the side wall of the inner wrapped rice ball 22 and the inside of the recessed fitting part 20 are placed. The left and right ends 33a and 33b of the outer wrapping material 32 rise up between the walls, and are similarly bonded so as to wrap around the back surface of the inner wrapped rice ball 22. A lid 30a is provided on the upper edge 30 of the outer wrapping material 32, and covers the upper surface of the inner wrapped rice ball 22 during packaging (see FIG. 4).

In this case, the lower edge 31 of the outer packaging material 32 is an opening, and the inner packaging material 1 is opened as shown in the completed diagram in FIG.
A tension portion 40 corresponding to the top of the lower bottom of 5 is made to protrude.

In the above embodiments, a sheet in the shape of an almost inverted triangular bag was used.
The outer packaging material may be a conventionally known inverted triangular bag with an open bottom edge, and the inner packaging material may be a sheet shaped like an unfolded inverted triangular bag. Alternatively, a conventionally known inverted triangular bag may be used, and a sheet formed by expanding the inverted triangular bag as an outer packaging material and cutting off the lower part may be used.

Note that the inner packaging material and the outer packaging material may each be made of a pentagon shape like a baseball base board and its lower base cut out, as shown in a and b of Fig. 5.
It may also be a fan shape with a constant central angle and its lower base cut off, as shown in a and b in the figure.

Furthermore, the food for wrapping rice balls that is interposed between the inner and outer packaging materials is not limited to seaweed, and may of course be other foods such as dried kelp, thinly fried eggs, and other food products processed into sheet shapes. .

Next, a method for continuously manufacturing the above-mentioned packaged rice balls will be described with reference to FIG. FIGS. 7a and 7b are a side view and a plan view showing the continuous packaging of rice balls.

70 is a conveyor, 72 is a rice ball mounting table, and an inverted triangular rice ball recess 20 is provided.

At position A, the inner packaging material 15 is placed on the mounting table 72 so as to cover the recessed fitting part 20. Inner packaging material 15
is cut from the film and pulled down by a vacuum.

At position B, 74 is a rice ball conveying device that is perpendicular to the conveyor 70, and the rice balls 16 that have been conveyed are released onto the inner packaging material 15 on the recessed fitting part 20 of the mounting table 72.

As the rice ball 16 is inserted into the recessed fitting part 20, the inner packaging material 15 around the rice ball 16 folds up.

At position C, 76 is a guide for folding the inner wrapping material 15 toward the top surface of the rice ball 16, and is provided oppositely and projecting inward at right angles to the conveyor 70. As the rice ball 16 moves, the upright inner packaging material 15 is alternately folded into the upper surface of the rice ball 16.

A spot seal 78 spots-seals the overlapping portions of the inner packaging material 15.

At position D, the inner-wrapped rice ball 22 is lifted up by the upper elevating vacuum pipe 80, and is covered with a plate of seaweed 6 so as to cover the recessed fitting part 20.
8 is supplied. The plate nori 68 is lowered by a vacuum pump 84 from a seaweed feeder 82 provided diagonally above, and is provided so as to slide down on an inclined plate.

When the inner wrapping rice ball 22 is fitted into the recessed fitting part 20, the outer circumference of the plate nori 68 rises up and is superimposed on the upper surface of the inner wrapping rice ball 22 by the guide 76, and after being sucked out. Then, the outer wrapping material 32 is again supplied and covered on the recessed fitting part 20, and the inner wrapped rice ball 22 wrapped with a plate of seaweed 68 is placed thereon, wrapped in the same manner, and finished by spot sealing.

It goes without saying that the conveyor 70 may be of a turntable type in addition to a linear type.

Further, in the above embodiment, an equilateral triangular rice ball has been described, but any rice ball may have a downwardly tapered surface, and the inner wrapping material and outer wrapping material may be formed to match the shape of the rice ball. Other changes may be made in the detailed configuration, shape arrangement, etc., without departing from the spirit of the present invention.

(Effects of the invention) As described above, since the inner and/or outer packaging material of the rice ball is made into a flat sheet, the processing of the material is simplified, and the packaging method is also that the sheet is folded while being wrapped. It has great effects, such as making automation extremely easy and reliable.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of the drawing]

FIG. 1 is a developed view of the inner packaging material 15, FIG. 2 is a perspective view showing the seaweed 21 placed on the recessed fitting part 20 and the inner packaging rice ball is positioned above, and FIG. 3 is an outer packaging material 32. FIG. 4 is a perspective explanatory view of the completed packaged rice ball, and FIGS. 5 and 6 show packaging materials of different shapes, where a indicates the inner packaging material and b indicates the outer packaging material, respectively. FIGS. 7a and 7b are a cross-sectional side view and a plan view showing a continuous manufacturing apparatus and manufacturing method for packaged rice balls,
FIG. 8 shows a conventional method for manufacturing packaged rice balls. 10...Inverted triangle, 11...Virtual vertical center line, 1
2a, 12b... Side, 13A, 13B... Virtual edge portion, 14a, 14b... Adhesive margin, 15... Inner packaging material, 16... Rice ball, 20... Recessed fitting part, 2
1... Seaweed, 22... Inner wrapped rice ball, 30...
Upper end, 31...Lower end, 32...Outer packaging material, 3
3a, 33b...End part, 40...Tension part, 50
...Rice ball, 52...Inner bag, 54...Insertion hole,
56... Outer bag, 58... Board nori, 60... Bottom bottom, 68... Board nori, 70... Conveyor, 72...
...Placement table, 74...Rice ball transport device, 76...
Guide, 78... Spot seal, 80... Lifting vacuum pipe, 82... Seaweed feeder, 84
...Bakyum pipe.

Claims (1)

[Claims] 1. The back side of an inverted triangle consisting of the front and back sides of a flexible material with an open top end is cut open along the vertical center line,
An inner wrapping material for a packaged rice ball whose basic shape is developed around both the left and right sides of a triangle. 2. The inner wrapping material for a packaged rice ball according to claim 1, wherein the unfolded shape is a pentagon like a baseball base plate. 3. The packaged rice ball according to claim 1, wherein the unfolded shape is a pentagon with parallel sides tapered so that the right angles of the two corners are obtuse angles, such as a baseball base plate. Inner packaging material. 4. The inner packaging material for a packaged rice ball according to claim 1, wherein the unfolded shape is a fan shape having a constant central angle. 5 The bottom apex of a triangle consisting of front and back surfaces with open upper edges is cut out parallel to the upper edge, the back side of the triangle is cut open along the vertical center line, and the shape is expanded around both the left and right sides of the triangle. An outer packaging material for a packaged rice ball that has approximately the basic shape. 6. The outer packaging material for a packaged rice ball according to claim 5, wherein the unfolded shape is pentagonal, like the base plate of a baseball, and the lower bottom apex is cut horizontally. 7. A patent claim in which the developed shape is a pentagon whose parallel sides taper so that the right angles between the two corners are obtuse, such as by horizontally cutting the bottom top of the pentagon. The outer packaging material for the packaged rice ball described in item 5. 8. The outer packaging material for a packaged rice ball according to claim 5, wherein the unfolded shape is a sector-shaped one having a certain central angle, and the lower bottom apex is cut horizontally. 9. An inverted triangular rice ball is wrapped so that the lower end of the inner packaging material is pulled downward to expose the rice ball, and a wrapped food material such as nori is wrapped around the outside of the package to create a triangular shape consisting of the front and back sides with the upper edge open. Cut the bottom top part parallel to the top edge and excise it.
Cut out the back side of the triangle along the vertical center line, wrap it with an outer packaging material whose basic shape is approximately the shape developed around both the left and right sides of the triangle, and overlap the two end portions cut out along the vertical center line. A packaged rice ball characterized by being spot-sealed and having a tension part of the inner packaging material of the rice ball protrude from the top of the triangular bottom base. 10 An inner wrapping material for a packaged rice ball whose basic shape is formed by cutting open the back side of an inverted triangle along the vertical center line, which is made up of the front and back sides of a flexible material with an open top end, and expanding around both the left and right sides of the triangle. Wrap a nearly triangular rice ball, cut it out along the vertical center line, overlap the two edges, spot seal it, and then cut the bottom top of the inner wrapped rice ball parallel to the top edge to make a triangular outer part. A packaged rice ball characterized in that the rice ball is wrapped in a packaging material, and a tension part of the inner packaging material of the rice ball is made to protrude from the bottom top of the outer packaging material. 11 An inner wrapping material for a packaged rice ball whose basic shape is formed by cutting open the back side of an inverted triangle along the vertical center line, which is made up of the front and back sides of a flexible material with an open top end, and expanding around both the left and right sides of the triangle. Wrap a nearly triangular rice ball, cut out along the vertical center line, overlap the two edges, spot seal, and wrap food such as seaweed around the outside of the package to create a triangle consisting of the front and back sides with the top edge open. The top of the bottom of the triangle is cut out parallel to the top edge, the back side of the triangle is cut open along the vertical center line, and the outer packaging material is wrapped with an outer packaging material whose basic shape is approximately the shape developed around both the left and right sides of the triangle. A packaged rice ball characterized in that both end edges cut out along the longitudinal centerline are overlapped and spot-sealed, and a tensioned part of the inner packaging material of the rice ball protrudes from the top of the triangular bottom base. 12 Wrap the outside of the inverted triangular rice ball with a flexible sheet-like packaging material so that the bottom end of the inner packaging material is pulled downward to expose the rice ball, and the triangular recessed part of the rice ball is slightly larger than the size of the rice ball. Cover the wrapped food such as seaweed on top, push the inner packaged rice ball into the recessed part from above, and fold the wrapped food such as seaweed that has risen along the side wall along the top surface and take it out from the recessed part. On the other hand, the bottom apex of a triangle consisting of front and back surfaces with open upper edges was cut out parallel to the upper edge, the back side of the triangle was cut open along the vertical center line, and the triangle was expanded around both the left and right sides of the triangle. An outer packaging material having a substantially basic shape is covered over the recessed part as described above, and an inner wrapped rice ball wrapped with the above-mentioned food material such as seaweed is pushed into the recessed part and placed along both side walls. A method for manufacturing a packaged rice ball, in which both end edges cut out along the vertical center line of the rice ball are overlapped along the top surface and spot-sealed, and the tensioned part of the rice ball's inner wrapping material protrudes from the top of the bottom of the triangle. . 13 The inner wrapping material of a packaged rice ball whose basic shape is approximately the shape developed around both the left and right sides of the triangle by cutting open the back side of an inverted triangle made of the front and back sides of a flexible material with an open top end along the vertical center line. , cover it over a triangular recessed part whose size is slightly larger than the size of the inverted triangular rice ball to be packaged, push the rice ball into the recessed part from above, and align it with the vertical center line rising along both side walls. The two edge parts cut out along the top surface are overlapped along the top surface and spot-sealed to form an inner-wrapped rice ball.Next, the recessed part is covered with wrapping ingredients such as seaweed, and the inner-wrapped rice ball is recessed on top of that. The wrapped food material such as seaweed that has been pushed into the inner part and rose along the side wall is folded along the top surface and taken out from the recessed part, and the inner wrapped rice ball with the wrapped food material such as seaweed wrapped around it is further folded into the bottom top part. This wrapped rice ball is wrapped in a triangular outer packaging material cut parallel to the upper edge of the rice ball, and the tension part of the inner packaging material of the rice ball protrudes from the lower bottom apex of the outer packaging material. 14 An inner wrapping material for a packaged rice ball whose basic shape is approximately the shape developed around both the left and right sides of the triangle by cutting open the back side of an inverted triangle made of the front and back sides of a flexible material with an open top end along the vertical center line. , cover it over a triangular recessed part whose size is slightly larger than the size of the inverted triangular rice ball to be packaged, push the rice ball into the recessed part from above, and align it with the vertical center line rising along both side walls. The two edge parts cut out along the top surface are overlapped along the top surface and spot-sealed to form an inner-wrapped rice ball.Next, the recessed part is covered with wrapping ingredients such as seaweed, and the inner-wrapped rice ball is recessed on top of that. The wrapped food material such as seaweed that has been pushed into the part and rose up along the side wall is folded along the top surface and taken out from the recessed part, while the top edge of the lower bottom of the triangle consisting of the open front and back sides is folded over the top edge. Cut out the back side of the triangle along the vertical center line, and place the outer packaging material whose basic shape is approximately the shape developed around both the left and right sides of the triangle on top of the recessed part as described above. Then, from above, push the inner wrapped rice ball wrapped with the above-mentioned seaweed or other wrapped ingredients into the recessed fitting part, overlap it along the above-mentioned vertical center line that rises along both side walls, and spot-seal it, and place it under the triangle. A method for producing a packaged rice ball in which a tension part of an inner packaging material of the rice ball protrudes from the bottom top.