JP2000014341A - Method of sealing in packaging rice ball and rice ball packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of sealing in packaging rice ball, and to provide a rice ball packaging machine, intended to afford such a packaged form as to package a triangular rice ball with a bagging sheet with its four corners not excised and enable both the right and left top corners to be favorably torn off by the aid of an unsealing row element even if both the corners are mutually superposed considerably. SOLUTION: This method of sealing in packaging rice ball comprises the following procedure: a triangular rice ball M is packaged with a bagging sheet S having an unsealing row element 1, the triangular surface of the rice ball M is superposed with the corners S2a, S2b of the packaging terminal ends of the sheet S, a heat sealer 9 and a film press member 10 are pressed against a site close to the unsealing row element 1 to effect melting the film to afford a slit, thereby providing a notch 7 for tearing purpose, and the periphery of the notch is weld-sealed, and the weld-sealed site is stuck with a label so as to mask the site.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a form in which a triangular onigiri is wrapped in a rice ball wrapping bag sheet containing laver. Before opening, the laver and the triangular onigiri are not in direct contact with each other. The present invention relates to a method of sealing rice balls and a rice ball packaging machine in which the package can be completely torn by pulling it 360 degrees, and the package divided into two parts is pulled right and left, so that the laver is in a state of packing a triangle rice ball.

[0002]

2. Description of the Related Art An onigiri wrapping bag sheet in which laver is packaged, and the oldest conventional example is, for example, Japanese Utility Model Laid-Open No. 5-72.
FIGS. 15, 16 and 17 of US Pat. The onigiri wrapping bag sheet in which the laver is packaged is shown in FIGS. 15, 16 and 17, and the laver and the two inner films are sequentially arranged on an outer film having an opening strip adhered to the center of the width. The two inner films are placed, the edges are overlapped at the width center of the outer film, and the remaining edges are heat-sealed to the periphery of the outer film to accommodate the laver. Then, as shown in FIG. 17, the packaging form of the onigiri is such that the upper half avoiding the middle of the onigiri packaging bag sheet is the lower surface of the sheet, and the lower surface of the triangular onigiri is placed on the lower surface of the sheet, And the rice ball packaging bag sheet is folded up along the bottom of the triangle rice ball in the middle of the rice ball packaging bag sheet, and the lower half avoiding the middle of the rice ball packaging bag sheet is set as the sheet upper surface part, and the sheet upper surface part is a triangle rice ball triangle. The upper surface of the sheet is folded down along the left and right inclined sides of the triangular rice ball, and the remainder is aligned with the lower surface of the sheet, and the lower surface of the sheet is aligned with the left and right inclined sides of the triangular rice ball. Bend the left and right corners in order along the upper surface of the triangular rice ball, and place the points on the left and right corners so that the left and right corners do not open. And composed. To open, pull the end of the opening strip located at the top of the triangular rice ball in the folding direction to divide the exterior film left and right, and tear until the tear reaches the other end of the opening strip. Do. The opening strip will divide the label and open the left and right corners overlapping the upper surface of the triangular rice ball and divide the exterior film left and right. By pulling each half of the exterior film divided into right and left, right and left, the left and right interior films can be completely removed. Triangle rice balls are exposed with nori rolls.

[0003] The disadvantages of the onigiri packaging bag sheet in which the laver is packaged and the packaging form of the onigiri are as follows:
It is pointed out in Japanese Patent No. 764 that it cannot be opened successfully. That is, the package when in the packaged state has an overlapping portion in which the upper right portion and the upper left portion are deeply overlapped with each other at the corners, and for preventing display of the overlapping portion, the overlapping portion is prevented from opening. The sticker made of paper for the purpose of use is stuck. For this reason, when the opening strip is pulled, the overlapping portion hinders the progress of the opening strip, so that the opening strip is cut off in the middle and the opening strip can be successfully removed. There was a risk of disappearing. Therefore, it has been pointed out that in such a case, the exterior film is not cut into two pieces neatly, and there is a problem that it takes time to open the package.

[0004] To solve the above problems, there is disclosed a conventional onigiri package that can be easily and reliably cut by opening means, and can be easily divided into two and opened. There are many patent gazettes and utility model gazettes. JP-B-7-32679, JP-A-5-162768, JP-A-5-162770, JP-A-7-13
No. 5,917, JP-A-8-242789, JP-A-8-242790, JP-A-5-72763, and JP-A-5-72764. It is said that it can be easily, reliably, and easily opened in two parts.

[0005] However, there is no problem at all. JP-B-7-32679, JP-A-5-1627
No. 68, Japanese Unexamined Patent Publication No. 5-162770, Japanese Utility Model Laid-Open No. 5
In the packaging for onigiri disclosed in Japanese Unexamined Patent Publication No. 72763/1993 and Japanese Unexamined Utility Model Publication No. 5-72764, there is an overlapping portion in which the upper right portion and the upper left portion are deeply overlapped with each other at the corners. 15 and FIG. 1 of Japanese Utility Model Laid-Open No. 5-72764 described above, in that a paper seal for display or decoration is attached to prevent
6, and the same as the rice ball wrapping bag sheet in which laver is packaged, as shown in FIG. These inventions or inventions, when the notch or notch provided on the side edge of the upper left corner of the rice ball packaging body, and the notch or notch provided on the side edge of the upper right corner, when packaging a triangle rice ball , By matching across the opening strip, the opening strip,
It says that the notch or notch in the upper left and upper right corners along with the label can be torn.

However, when the center of the triangular rice ball is shifted from the center of the outer film, the notch or notch provided on the side edge of the upper left corner of the rice ball packaging body,
The notch or notch provided on the side edge of the upper right corner does not match at the intersection of the side edges, and the opening strip has a notch or notch provided on either the upper left corner or the upper right corner. And not the other notch or notch, and the label will be applied. In most packages, notches or cutouts provided in the upper left corner and the upper right corner do not completely coincide with each other in correspondence with the opening strip. This prevents the opening strip from tearing the notches or notches in the upper left corner and the upper right corner. Further, even when the notches provided in the upper left corner and the upper right corner or the notches completely correspond to the opening strip, the outer film wrapped on the upper surface of the rice ball is not removed. Since there is no point where the upper left corner and the upper right corner that overlap there are directly bonded, the tearing force given by pulling the opening strip is transmitted directly to the exterior film, but the upper left corner and the upper right corner Is difficult to transmit with a force of the same magnitude, so that the tearing force does not act sufficiently effectively as a force to tear through the notches provided in the upper left corner and the upper right corner, and tearing with the opening strip May become quite heavy, and the strip for opening may be cut or the power to grasp the rice ball may increase, causing the rice ball to collapse. In addition, notch notch of I cut, but notch of V cut or semi-circle cut gives out film strips, so it is difficult to ensure completeness so that film strips do not adhere when manufacturing packaging for onigiri. There is a risk that small pieces will be eaten together with the rice balls, making it impractical.

Further, Japanese Patent Application Laid-Open Nos. Hei 7-135917, Hei 8-242789, Hei 8-242790
In the package for onigiri disclosed in Japanese Patent Laid-Open Publication No. H10-115, four corners are largely removed, and an upper left corner and an upper right corner overlapping the upper surface of the triangular onigiri have a small overlapping area. Of these, the onigiri package disclosed in Japanese Patent Application Laid-Open No. 7-135917 is used for opening by separating the label with an opening strip and then turning up the upper left corner and upper right corner that overlap with a small area. It is said that the strip can tear the exterior film to the end. However, Japanese Patent Application Laid-Open No. Hei 8-24 discloses that it may not be possible to turn up the upper left corner and the upper right corner that overlap with a small area with the opening strip.
2789 and JP-A-8-242790. Onigiri rice balls disclosed in JP-A-8-242789 and JP-A-8-242790 are provided with a plurality of notches on a side edge of a square cutout, so that a label can be opened with an opening strip. After splitting the, it is trying to tear it away from the notch, rather than turning up the upper left corner and upper right corner that overlap in a small area.

However, JP-A-7-135917, JP-A-8-242789, and JP-A-8-24
The package for rice balls disclosed in Japanese Patent Publication No. 2790 has the following disadvantages. As a result of forming a cutout in the square, a film strip is obtained, so it is necessary to make sure that the film strip does not adhere when manufacturing the onigiri packaging, and check whether the film strip has adhered Is needed. As disclosed in Japanese Patent Application Laid-Open No. Hei 7-135917, the rice ball wrapper can turn up the upper left corner and the upper right corner, which are overlapped with a small area, after separating the label with an opening strip. If you turn it over,
The opening strip is cut, resulting in incomplete opening. The rate of incomplete opening is quite high. JP-A-7-135917, JP-A-8-2427
No. 89, Japanese Patent Application Laid-Open No. 8-242790, for any of the onigiri packages, the outer film is formed such that the upper film edge and the left and right notch side edges form a portion where the outer film looks triangular. Labels need to be attached,
As a result, the lower edge of the label hangs on the bottom of the triangle of the triangular rice ball, making it difficult to attach the label. When I purchased rice balls at a convenience store and examined them, I found that many of them moved the label position upward because the label was difficult to stick. When the center of the triangular rice ball is displaced from the center of the outer film, the notch provided at the upper left corner of the package for onigiri and the notch provided at the upper right corner of the rice ball package have side edges. At the intersection of each other, it will not match, and the opening strip will match only the notch provided at either the upper left corner or the upper right corner, and will not match the other notch or notch, and the label will be attached Will be. In most packages, the notches provided at the upper left corner and the upper right corner do not completely match the opening strip. In this way, if the label is shifted upward and the center of the triangular rice ball is shifted from the center of the exterior film, the notch is torn from the notch at the upper left corner and upper right corner with the opening strip. Disappears. Since the four corners are largely cut off, the upper left corner and the upper right corner overlapping the upper surface of the triangular rice ball have a small overlapping area, so the buyer turns over the upper left corner and the upper right corner for the hand at the store and further It is possible to flip the inner exterior film. In this regard, the onigiri wrapping bag sheet in which laver is packaged as shown in FIGS. 15, 16 and 17 of Japanese Utility Model Laid-Open Publication No. 5-72764 is not square-cut, and has an upper right corner and an upper left corner. Since the corners are deeply overlapped with each other, the overlapping parts are prevented from opening and a paper label for display or decoration is attached,
It is impossible for the purchaser to turn over the upper left corner and the upper right corner at the store, and further turn the exterior film inside.

The rice ball package disclosed in Japanese Utility Model Laid-Open No. 3-108389 has four corners not cut off, and the upper left corner and the upper right corner overlapping the upper surface of the triangular rice ball are deeply overlapped with each other, and have an overlapping area. Is large and the packaging is solid, but the label is not affixed, which may give the buyer the impression that the packaging is incomplete. This onigiri package is not cut off at the four corners, so no film strips are produced during the production of the onigiri package, but it is necessary to add a notch at the time of production, and cut off the edge of the film using a cutter. This is a problem in the production of onigiri packaging because it is difficult to provide many notches.

The packaging rice balls disclosed in Japanese Utility Model Publication No. 4-48712 and Japanese Utility Model Publication No. 4-48713 have a corner cut, and a film strip is generated when a package for an onigiri is manufactured. Further, since no label is attached, there is a fear that the buyer may feel that the packaging is incomplete.

[0011]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and has a form in which a triangular rice ball is packaged in a rice ball packaging bag sheet containing laver.
Before opening, the seaweed and the triangular rice ball do not come into direct contact with each other, so that the opening strip can be pulled completely to tear the package 360 degrees, and the package that has been split into two parts, left and right, can be pulled to the left and right. It is an object of the present invention to provide a method of sealing rice ball packaging and a rice ball packaging machine in a packaged state.

[0012]

According to a first aspect of the present invention, there is provided an onigiri wrapping bag sheet having an exterior film to which an opening strip is adhered, wherein the opening strip has one center of a triangular rice ball. In the state of winding, wrap the triangular rice ball, overlap the wrapping end of the rice ball packaging bag sheet on the triangular surface of the triangular rice ball, the wrapping terminal and the exterior film overlapping thereunder, in the vicinity of the opening strip. By pressing the heat sealer and a film pressing member that presses the vicinity of the heat sealer against the location, the wrapping end and the exterior film overlapping the lower side thereof are melted to form an elongated hole to form a tear notch,
At the periphery of the tear notch, the wrapping end and the exterior film overlapping thereunder are welded and sealed, and a welded seal with the tear notch is provided in one or more strips along the opening strip. It is an object of the present invention to provide a sealing method in rice ball packaging, characterized in that a label is applied so as to conceal a welding seal provided with a notch.

[0013] The second invention of the present application is directed to a rice ball packaging bag sheet having an exterior film to which an opening strip is adhered, so that the opening strip is wound around the center of the triangle rice ball by one turn. In an onigiri packaging machine that wraps an onigiri and overlaps the wrapping end of the onigiri wrapping bag sheet on the triangular surface of the triangular onigiri and welds and seals the wrapping end and an exterior film overlapping thereunder, the wrapping is performed by a film pressing member. The tearing notch formed by pressing the terminal and the exterior film overlapping the lower side thereof, wrapping the heat sealer in contact with the external film overlapping the terminal and the lower side thereof, melting the contact portion, and opening an elongated hole is formed by the opening strip. One or more strips are formed along the body, and the outer wrap is formed at the edge of the tear notch and overlaps with the wrapping end and the lower side thereof. It is to provide a rice ball packaging machine, characterized by being adapted to weld seals the arm.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sealing method and a rice ball packaging machine in a rice ball packaging according to the present invention will be described with reference to the drawings. This rice ball packaging is, as shown in Figs.
The opening strip 1 having heat resistance and high tensile strength is attached to the center of the width of the rectangular exterior film 2 so that the length is equal, and both ends of the opening strip 1 of the exterior film 2 are sandwiched. Notches 1a and 1b for tearing are provided at positions, and laver 3 slightly smaller than the length and width of the exterior film 2 is placed at the center of the exterior film 2, and the length of the exterior film 2 is further placed thereon. The two interior films 4 and 5 having an elongated shape equal to the length and slightly larger than half the width of the exterior film 2 are placed in order, and the two interior films 4 and 5 are set to the width of the exterior film 2. Edges are overlapped at the center, and the remaining edges are aligned with the peripheral portion of the exterior film 2 and heat-sealed 6 to form an onigiri packaging bag sheet S containing the laver 3. Then, FIG.
(a), the the upper half S ₂ as a sheet lower surface S ₂ avoiding the middle S ₁ of the rice ball packaging bag sheet S,
Placing the lower surface of the triangular triangular rice balls M to the seat bottom surface S _2. Next, as shown in FIG. 2 (b) or (c), the rice balls M are wrapped in a rice bag packaging bag sheet S. FIG. 2 (b) or (c) shows an intermediate step of the packaging. Packaging shown in FIG. 2 (b), the at rice ball packaging bag sheet in the middle S ₁ Trey along the bottom of the triangular rice balls M, under avoiding the middle S ₁ of the rice ball packaging bag sheet S half the S ₃ as a sheet upper surface portion, bent along the upper surface of the sheet portion S ₃ on the upper surface of the triangle of the triangular rice balls M, the lowered folded further along the upper surface of the sheet portion S ₃ to the right and left inclined side of the triangular rice balls M This shows a state in which the remainders S _3a and S _3b are aligned with the left and right corners S _2a and S _2b of the seat lower surface S ₂ . Packaging remainder S _3a shown in FIG. 2 (c),
S _3b is replaced with left and right corners S _2a , S ₂ of the seat lower surface S ₂ .
Without suit _2b, involving the lower surface of the triangular triangular rice balls M, shows a state matched to the sheet lower surface S _2. 3, and 4 show corners S _2a of the left and right seat lower surface portion S _2, a state in which the packaging completed at different folding the upper surface of the triangle S _2b triangular rice balls M. Fig. 2 (b) or
A description will be given of the packaging process from the mode in the middle of packaging shown in (c) to the completion of packaging shown in FIG. As shown in FIG. 2 (b) or (c), right and left corners S _2a and S _2b are triangular rice balls M
The left and right corners (wrapping ends) S _2a and S _2b are triangular rice balls M
Bend in order along the top surface of Then, the right corner S _{2a of the} triangle sequentially overlapping the upper surface of the triangular rice ball M
A left corner corner S _2b, at a position crossing the opening ridge member 1, five pieces of at least one single in the illustrated, preferably, each of the opposite sides so as to sandwich the opening ridge body 1 Two or one tear notch 7 formed by fusing the film is provided, and the left and right corners (wrapping ends) S _2a and S _2b and the upper surface of the sheet of the exterior film are provided at the periphery of the tear notch 7. In a state where S ₃ is welded, four tear notches 7 are provided, and then a label 8 is attached so as to hide the tear notch 7. The packaging process from the halfway packaging form shown in either FIG. 2 (b) or (c) to the completion of the packaging shown in FIG. 4 starts from the halfway packaging form shown in FIG. 2 (b) or (c). This is almost the same as the packaging process up to the completion of packaging shown in FIG. The difference in bending will be described with reference to FIG. Also corners of the left (wrap termination) folded around the corresponding S _2b in a triangular rice ball top opening ridge body 1 folded along the M (folded portion is not exceeded even beyond the opening ridge body 1 Good), right corner (wrapping end) S
_2a is folded along the upper surface of the triangular rice balls M and overlaid to hide corners (wrap termination) S _2b of the left there is the wrapping. In FIG. 3 and FIG. 4, the welding seal provided with a tearing notch 7 formed by fusing a film to form an elongated hole is parallel to the opening strip 1, but the distance between the notches on the bottom side of the triangular rice ball M is shown. May be widened, or may be bent so as to increase the interval between the notches. In the present specification,
The meaning of "the welding seal is along the opening strip" includes such a case. The present invention includes a case where only one welding seal having a tear notch 7 is provided in conformity with the opening strip 1. In this case, it is necessary to use a film material having heat resistance for the opening strip 1 so that the opening strip 1 is not melted.

In the present invention, as shown in FIGS. 5A, 5B and 5C, a knife-edge-shaped heat sealer 9 and left and right corners S _2a and S _2b near the heat sealer 9 are provided. pressing the film pressing member 10 so as not to float from the top surface of the seat portion S ₃ of the exterior film. Thus, heat sealer 9, heat melt the film provided with a tear notch 7, the left and right corners S _2a, three sheets top portion S ₃ of S _2b and the outer film, the tear notch 7 Weld seal at the periphery. When the left and right corners S _2a , S _2b rise slightly from the upper surface S ₃ of the exterior film, the left and right corners S _2a , S _2b become the upper surface S _{3 of the} exterior film. These three sheets are provided in order to prevent such a situation that the welded sealing state does not occur at the periphery of the tearing notch 7. Thus, the present invention provides the heat sealer 9 with the left and right corners S _2a ,
The tear notch 7 and the periphery of the tear notch 7 can be welded and sealed 100% by just pressing against S _2b instantaneously, and there is no need to push the heat sealer until it reaches the laver or rice ball. , Compared to the case where a knife is inserted and a notch is provided by cutting,
The penetration size can be made extremely small, and the repetition of the cut-off like a knife does not sharpen and does not require periodic replacement. In addition to heating to nearly 200 degrees, Since the label 8 is attached, there is no fear of contamination by bacteria, and the device is sanitary. Basically, the sheet sealer 9 may have a tip-shaped plate-like structure and a tip end surface like a sharpened soldering iron having a knife-edge shape. Preferably, a temperature sensor is used to control the temperature to an appropriate temperature to melt the film. The structure that can be done is good. The film pressing member 10 shown in FIG. 5 is a cylindrical shape made of a heat-resistant material having a very low thermal conductivity, and is supported by a non-heating portion on the base side of the sheet sealer 9 and hangs around the sheet sealer 9. Therefore, the sheet sealer 9 and the film pressing member 10 are integrated and move integrally. Since the sheet sealer 9 is provided with the tear notch 7 by melting the film by heat, when the film pressing member 10 comes into contact with the left and right corners S _2a and S _2b , the left and right corners are provided. S _2a , S
_It suffices if the relative positional relationship is such that it can reliably contact _2b . It is not necessary that the sheet sealer 9 protrudes greatly from the film pressing member 10. The sheet sealer 9 and the film pressing member 10 need not be integral. For example, in an onigiri packaging machine, left and right corners S _2a , S _2b
If it is wrapped up to the stage where it is raised and fed laterally, the left and right corners S _2a and S _2b are folded so as to be in close contact with the upper surface of the rice ball, and are held by the upper holding plate so as not to open, The upper pressing plate corresponds to the film pressing member 10 of the present application. Note that the tear notch 7 may reach the laver, but it is preferable that the tear notch 7 does not reach the laver.

3 or 4, the outer end of the opening strip 1 is pulled so that 1a is folded back.
Opening ridge body 1, will tear the further label 8 tore the outer film 2 and reaches the intersection between the side edge of the side edge and the left-hand corner corners S _2b of the right corner corner S _2a, strip for opening There are four tear notches 7 on both sides of the body 1, and the outer film 2 and the left and right corners S around each notch 7.
_2a and S _2b are welded, so that when the opening strip 1 is pulled, the exterior film 2 and the left and right corners S _2a , S _2b and the label 8 are cut from the tear notch 7 as if it were a single sheet. The tear can be performed lightly.

Next, an onigiri packaging machine according to a second embodiment of the present invention will be described with reference to FIGS. The rice ball packaging machine holds the rice ball packaging bag sheet S laminated on the bag sheet stock 13 by suction by the vacuum pad type bag sheet transfer means 12 and recesses the rice ball packaging bag sheet S on the upper surface of the fixed table 11. Is transferred to the rectangular recess 11a, and the rice ball supply means (not shown) grasps the triangular rice ball M and places it on the packaging bag sheet S in the positional relationship shown in FIG. The triangular rice ball M is wrapped by the wrapping bag sheet S by a wrapping bag sheet folding means, and a tearing notch 7 is provided by a heat sealer 9 and a film holder 10 so that the wrapping is not opened.
The package K is sent out to the unloading conveyor 15 by the pusher 14, intermittently stopped during the transportation, and the notch for tearing is applied to the unloading conveyor 15 by the label attaching means (known labeler) 16. A label 8 is stuck so as to hide 7, and subsequently, it is configured to be sent out by a carry-out conveyor 15.

As shown in FIG. 7, the bag sheet folding and packaging means pushes up the right angle folding push-up plate 17,
By moving the horizontal folding push-up plate 18 horizontally, the triangular rice ball packaging bag sheet S is wound around the triangular rice ball M in a channel shape. Next, as shown in FIG. 8, the rice ball pressing plate 19 having the ear piece folding plates 19a, 19a is pushed down, whereby the ear piece folding plate 19
a, 19a by the corners of the left and right seat upper surface portion S ₃ which projects from the triangular rice balls M down folded along the right and left inclined side of the triangular rice balls M, the remainder S _3a, S _3b the seat bottom surface portion S ₂ (see FIGS. 2 (a) and 2 (b)) so as to match the left and right corners S _2a and S _2b of the rice ball.
9, the upper surface of the triangular rice ball M is pressed, and at the same time, as shown in FIG. The elevator 21 supporting the rice ball is lowered integrally with the rice ball pressing plate 19 to pass through the folding cylinder 20, and as shown in FIG.
The lowering is stopped in accordance with the height of the lower surface of the discharge conveyor 15. In the process of moving the triangular rice ball M downward through the folding cylinder 20 as described above, the folding cylinder 20
The underside of the sheet S _{2 of the} rice ball M using the folding function
The left and right corners S _2a and S _2b are folded up along the left and right inclined sides of the triangular rice ball M, and after passing through the folding cylinder 20, as shown in FIG. The lower portions of the left and right corners S _2a and S _2b are pressed by the plates 22 and 22 to prevent spreading. Next, as shown in FIG. 11, the left and right ear folding plates 23, 23 are sequentially horizontally moved along the upper surface of the rice ball M from outside the left and right inclined sides of the triangle rice ball M, so that the upper surface of the triangle rice ball M is higher than the upper surface of the triangle rice ball M. The left and right corners S _2a and S _2b which are left high are sequentially bent and stacked along the upper surface of the triangular rice ball M (see FIG. 3). FIG.
In (a), the left ear folding plate 23 is moved slightly earlier than the right ear folding plate 23, and the right ear folding plate 23 is moved to the middle of the upper surface of the triangular rice ball M, and the left ear folding plate 23 is folded. When the plate 23 is largely moved so as to overlap the right ear folding plate 23, as shown in FIG.
With the return to _2b, it can be packaged on to as the right of the corners S _2a overlap that. Next, as shown in FIGS. 5 (a) and 5 (b),
Opening strip 1 of right corner S _2a and left corner S _2b of a triangle
Heat sealer 9 and film holder 1
0 is lowered into the folding cylinder 20 and instantaneously comes into contact with the film, whereby the film is melted to give a tear notch 7 as shown in FIG. The corners S _2a and S _{2b of the above} and the sheet upper surface S ₃ of the exterior film S are welded and sealed.

In the rice ball wrapping machine of the present invention, the step of folding and wrapping the bag sheet may be performed by another method. In particular, important technical elements in the onigiri packaging machine of the present invention are the right corner S _2a and the left corner S _2b of the triangle that folds along the upper surface of the triangular rice ball M on both sides with respect to the opening strip 1, Alternatively, a heat sealer 9 and a film retainer 10 are provided as a means for providing a tear notch 7 at a position on one side or directly above and for securely performing a welding seal on the periphery of the tear notch 7. .

[0020]

According to the sealing method and the rice ball packaging machine of the present invention, the following effects can be obtained. By the heat sealer 9 and the film holder 10, the notch 7 for tearing and the sealing at the end of the packaging of the film can be completely performed. The application of the tear notch 7 is performed by fusing the film by the heat of the heat sealer 9, and the floating notch 7 is applied from the holding of the plurality of overlapping films by the film retainer 10. There is a notch 7 for tearing
100% can be reliably provided with a welding seal on the periphery of. If the knife is cut off with a knife, the sharpness is reduced and the knife needs to be replaced regularly.
Since the cutting is performed by fusing the film with the heat of the above, there is no problem that the sharpness is reduced. Therefore, there is no need for maintenance such as replacing the heat sealer 9 for the reduced sharpness. By applying a tear notch 7 by the heat sealer 9 and the film holder 10 and sealing the end of the packaging of the film by welding, the packaging bag sheet is packaged on the upper surface of the triangular rice ball using the rice ball packaging bag sheet having no corner cut. Complete packaging in which the upper right corner and upper left corner of the terminal end overlap each other deeply. Even if a large label is applied over the upper right corner and upper left corner of the packaging terminal of the packaging bag sheet, it is opened even if it is stuck. Pulling the strip and dividing the package into two can be performed without any trouble. On the contrary,
Conventional packaging uses a rice bag packaging sheet with a corner cut, so the upper right corner and upper left corner of the packaging end of the packaging bag sheet shallowly overlap at the triangular part above the label, and To the buyer, giving the buyer the impression that the label is incomplete, turning the upper left corner and upper right corner at the display shelf, and displacing the label. The problem of unsuccessful opening in which the package is divided into two by pulling the opening strip has occurred with a high probability of tens of percent. Using a rice ball packaging bag sheet without corner cuts, the upper right corner and the upper left corner of the packaging terminal of the packaging bag sheet at the top of the triangular rice ball can be completely packaged so that they can be completely packaged. It is impossible for the hand to turn over the upper left corner and the upper right corner, and further turn over the inside exterior film, and an inspector becomes unnecessary. In addition, since a large label can be attached, sufficient product content can be displayed. Furthermore, even if the position where the label is to be stuck is slightly shifted, the opening can be completely performed, and it is not necessary to stick the label to the end of the rice ball. Since the complete sealing and the complete opening can be realized by the heat sealer 9 and the film retainer 10, the present invention can be implemented by slightly remodeling an existing rice ball wrapping machine, and no new equipment investment is required. Onigiri packaging bag sheets without corner cuts can be used, so it is not only economical that small onigiri packaging machines can be remodeled, but the production of onigiri packaging bag sheets becomes easier, and costs can be reduced. There is no risk of contamination, and quality control becomes easier. In contrast,
Conventional onigiri packaging bag sheets were artificially cut with corners, or they were equipped with die cut rolls and corner cuts, so the cost was high and cut pieces were mixed. There was fear, and a full inspection was required for each one.

[Brief description of the drawings]

FIG. 1 (a) is a front view of an onigiri packaging bag sheet containing laver for realizing onigiri packaging according to an embodiment of the present invention. (b) is Ib-Ib in (a).
Sectional view.

FIG. 2 (a) is a plan view showing a state where a triangular rice ball is placed on an onigiri packaging bag sheet. (b) is a perspective view in the middle of packaging. (c) is a perspective view in the middle of packaging in another packaging form.

FIG. 3 is a front view showing a state in which a triangular rice ball is wrapped with a rice ball wrapping bag sheet, a welding seal with a tear notch is attached, and a label is attached according to the embodiment of the present invention.

FIG. 4 is a front view showing a state in which a triangular rice ball is wrapped with an onigiri wrapping bag sheet, a welding seal with a tear notch is attached, and a label is attached according to another embodiment of the present invention.

FIG. 5 (a) is a perspective view showing a place where a triangular rice ball is wrapped with an onigiri wrapping bag sheet and a welding seal with a tear notch is attached according to the embodiment of the present invention. . (b) is a sectional view taken along the line IIb-IIb in (a). (c)
(B) is an enlarged view of a main part of (b).

FIG. 6 (a) is a schematic plan view of a main part of an onigiri packaging machine according to an embodiment of the present invention. (b) is an enlarged view of a main part of (a).

FIG. 7 is a schematic cross-sectional view showing a state where a rice ball packaging bag sheet is placed on an upper surface of a fixed table of the rice ball packaging machine, and a triangular rice ball is placed thereon.

FIG. 8 is a schematic cross-sectional view showing the next step of FIG. 7 and showing a state in which the onigiri packaging bag sheet is folded into a U-shape to wrap a triangular onigiri.

9 shows the next step of FIG. 8, in which the overhang of the onigiri packaging bag sheet covering the upper surface of the triangular onigiri is folded down to the side of the triangular onigiri and pushed into the folding cylinder to form the underlay of the triangular onigiri. FIG. 2 is a schematic cross-sectional view showing a state where an overhang of a rice ball packaging bag sheet is folded up to a side surface of a triangular rice ball. FIG. 6A is a plan view showing the same step as in FIG.

FIG. 10 shows the next step of FIG. 9, in which a triangular rice ball is folded and passed through a cylinder, the triangular rice ball is wrapped in the rice ball packaging bag sheet, and the overhang of the rice ball packaging bag sheet serving as the underlay of the triangular rice ball is displayed. The schematic sectional drawing which shows the state which turned up as an earpiece.

11 is a view showing the next step of FIG. 10, and a welding seal having a notch for tearing by folding an ear piece of an onigiri packaging bag sheet for packaging a triangular onigiri that has passed through a folding cylinder onto an upper surface of the onigiri; FIG. 2 is a schematic cross-sectional view showing a state in which a label is provided, and a state in which a label is attached to a package ahead.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Opening strip 2 ... Exterior film 1a, 1b ... Notch for tearing 3 ... Nori 4,5 ... Interior film 6 ... Heat seal S ... Onigiri bag sheet S ₁ · · · onigiri packaging bag sheet midway S ₂ · · · rice balls sheet lower surface portion S ₃ · · · rice ball packaging bag sheet packaging bag seat seat top portion M · · · triangular rice balls S _2a , S _2b ... left and right corners of the lower surface of the sheet S _3a , S _3b ... left and right corners of the upper surface of the sheet 7 ... notch for tearing 8 ... label 9 ... heat sealer 10 ... Film pressing member 11 ... Fixed table 11a ... Rectangular recess 12 ... Vacuum pad type bag sheet transfer means 13 ... Bag sheet stock 14 ... Pusher K ... Packaged goods 15 ...・ Unloading con A 16 Label attaching means 17 Right-angle push-up plate 18 Horizontal push-up plate 19 Press plate 19a Ear-folding plate 20 Folding cylinder 21 Elevator 22 ・ ・ ・ Side pressing plate 23 ・ ・ ・ Fold plate

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masatoshi Sugawara 274-201 Kubohiraga, Matsudo-shi, Chiba Prefecture Ramie Matsudo High Rise 2-201 F-term (reference) 3E086 AA02 AC07 AC14 AC15 BA15 BB51 CA02 4B023 LE15 LP18 LT48

Claims (2)

[Claims] 1. An onigiri packaging bag sheet having an outer film to which an opening strip is adhered, wrapping the triangular rice ball in a state in which the opening strip wraps around the center of the triangular rice ball. On the triangular surface of the rice ball, the wrapping end of the rice ball packaging bag sheet is overlapped, and the wrapping end and the exterior film overlapping thereunder, in the vicinity of the opening strip, the heat sealer and the vicinity of the heat sealer By pressing a film pressing member that presses, the wrapping terminal and the exterior film overlapping thereunder are melted to form an elongated hole to form a tear notch, and at the periphery of the tear notch, the wrapping terminal and below it. The sealing film is welded to the outer film overlapping on the side, and the welding seal with the tear notch is aligned with the opening strip. In one or more strips, and applying a label so as to conceal the welded seal with the tear notch. 2. An onigiri wrapping bag sheet having an exterior film to which an opening strip is adhered, wrapping the triangular rice ball in a state where the opening strip wraps around the center of the triangular rice ball. An onigiri packaging machine for overlaying a wrapping end of an onigiri wrapping bag sheet on a triangular surface of an onigiri and welding and sealing the wrapping end and an exterior film overlapping below the wrapping end, wherein the wrapping end and its lower side are pressed by a film pressing member. Pressing the exterior film that overlaps, the heat sealer is wrapped around the terminal and the exterior film that overlaps below it, and a contact notch is melted to form a slit notch. Alternatively, while forming a plurality of strips, welding the end of the wrapping around the edge of the tear notch and the exterior film overlapping thereunder. Rice ball packaging machine, characterized in that it has become way.