JP2017141055A - Package for molded rice food and method for packaging the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package for a rice molded food with appearance improved and a commercial value increased.SOLUTION: On a bottom of a bag 12, a transverse seal part 16, in which inner faces of a packaging material are overlapped and are deposited on each other, extends in a longitudinal direction. On both of right and left sides of the bag 12 which sandwich a rice ball 14, vertical seal parts 20 and 20, in which the inner faces of the packaging material are overlapped and deposited on each other, extend in a vertical direction. At right and left ends of a bottom face of the bag 12, folding parts 22 and 22, in which the packaging materials on both sides which sandwich the transverse seal part 16 in a thickness direction are concaved into the bag, are formed. On one vertical seal part 20, a notch for opening, which can open the bag 12 in a longitudinal direction, is formed. On a bag bottom side of each vertical seal part 20, a first overlapped part 20a in which the inner faces of the packaging material are overlapped and deposited on each other and which crosses the transverse seal part 16, and a second overlapped part 20b in which the inner faces of the packaging material are overlapped and deposited on each other on front and rear sides which sandwich the first overlapped part 20a are respectively formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a package for cooked rice food in which a cooked rice food such as rice balls is sealed in a bag, and a packaging method therefor.

  With regard to the rice balls packaged as rice cooked foods that are packaged and sold one by one at convenience stores, etc., recently, the seaweed is made of rice balls or red rice that are rolled directly or partially around the rice. Many of the packages of rice balls that are not wound are changed from a packaging form in which a packaging material is tightly packaged to the outer shape of a rice ball (for example, see Patent Document 1) to a packaging form disclosed in Patent Document 2.

  The packaging form disclosed in Patent Document 2 forms a cylindrical packaging material by polymerizing the end portions of the packaging material in the shape of a palm, and the lateral seal edge that is the overlapping portion is the left and right end portions on the back side of the bag. In the bag formed so that the longitudinal seal edge intersecting the lateral seal edge extends in the longitudinal direction at the left and right edges of the bag. Such a three-side-sealed packaging form that contains a rice ball is superior in terms of hygiene due to hermetically sealed packaging, and can increase the commercial value with a sense of volume compared to conventional packaging. .

Japanese Patent Laid-Open No. 10-28541 Japanese Patent No. 4277211

  In general, the package is sold with rice balls raised at the time of display at the store. However, in the packaging form disclosed in Patent Document 2, the lateral seal portion crosses left and right on the back side of the bag. However, there is a disadvantage that it is inferior in appearance as a product. In addition, since the lateral seal part crosses the bag body, the only way to attach a quality label such as the expiration date of the rice ball is to attach the label after packaging, and it looks good due to the misalignment and distortion of the label. May decrease. Furthermore, although the said package is assisting the shape retention of a bag with a label, there exists a problem that cost increases by using this label.

  That is, the present invention has been proposed in order to suitably solve these problems related to the prior art, and improves the appearance and the commercial value, and the bag bottom portion without assisting with a label. An object of the present invention is to provide a package of cooked rice food that can ensure the formation of a food and a packaging method thereof.

In order to overcome the above-mentioned problems and achieve the intended purpose, the package of cooked rice food of the invention according to claim 1 of the present application,
A package of cooked rice food in which the cooked rice food is sealed in a bag,
In the bottom portion of the bag made of one sheet-like packaging material, the inner surfaces of the end portions of the packaging material are polymerized and welded so as to be positioned at the middle portion of the bag thickness and extend to the left and right. Lateral seal part,
In the left and right edge portions of the bag, the longitudinal seal portions formed so that the inner surfaces of the end portions of the packaging material are polymerized and welded to extend up and down the bag,
In the left and right ends of the bottom of the bag, a folded portion that is formed on both sides sandwiching the lateral seal portion in the front and back direction and is recessed inward of the bag,
An opening assisting portion that can be opened by tearing the bag in the left-right direction;
On the bag bottom side of both longitudinal seal parts, the front side polymerization part where the inner surface of the packaging material is polymerized and welded on the front side of the bag and the back side polymerization part where the inner surface of the packaging material is polymerized and welded on the back side of the bag Is provided with the lateral seal portion interposed therebetween.
According to the first aspect of the present invention, since the lateral seal portion is located on the bottom surface of the bag, it is possible to improve the appearance of the product displayed upright. In addition, the lateral seal portion crosses left and right at the bottom of the bag, and on the bottom side of the left and right edges of the bag, three overlapping portions where two packaging materials are overlapped and welded become columnar columns. As a result, the bag bottom has a stronger strain, and a package having improved shape retention on the bag bottom than the conventional package can be obtained.

In the invention which concerns on Claim 2, the said vertical direction seal | sticker part is formed so that a packaging material may superpose | polymerize in the approximate center of the thickness of the front and back in the bag in which the said cooked rice food was accommodated.
According to the invention which concerns on Claim 2, since three superposition | polymerization parts are arrange | positioned equally in the front and back direction by the bag bottom part, the appearance of a package can be made favorable.

In the invention which concerns on Claim 3, the overlapping width of the packaging material of the right-and-left edge part in which the vertical direction seal part in the said bag is formed is from the overlapping width of the packaging material of the bag bottom part in which the horizontal direction seal part in the said bag is formed. It is characterized by being set narrowly.
According to the invention of claim 3, by increasing the polymerization width of the packaging material at the bottom of the bag, the strain of the packaging material is strengthened to improve the shape retention, and the polymerization width of the packaging material at the left and right edge portions of the bag is increased. As a narrow product, the appearance of the package can be improved.

The invention according to claim 4 is characterized in that, on the back side of the bag, the packaging material is provided with a quality display section (28) on which the packaged product information is printed in an identifiable manner.
According to the invention according to claim 4, before storing the cooked rice food, the packaged product information such as the character information and the date and time such as the barcode for each item and the expiration date is packaged in the quality display portion of the flat packaging material. In this case, printing can be performed directly, and the package information can be prevented from being displaced or distorted. In addition, by printing the package information directly on the quality display section, there is no need to attach a label that displays the package product information, etc., and it is possible to reduce the cost for labels that account for a high proportion of material costs in the package. it can. Further, since the label itself can be made unnecessary, it can contribute to resource saving.

In the invention which concerns on Claim 5, the said horizontal direction seal | sticker part is comprised so that it can be bent toward the back side of a bag along a bag bottom face.
According to the invention which concerns on Claim 5, the appearance of a package can be made still better.

The invention according to claim 6 is characterized in that both overlapping portions of the longitudinal seal portion are bonded to a packaging material between opposing surfaces of both overlapping portions.
According to the invention of claim 6, since the three overlapping surfaces are bonded in the height direction from the bottom of the bag to form the strut on which the six packaging materials overlap each other, the bottom of the bag is supported. It is possible to further improve the properties.

In the invention which concerns on Claim 7, the said opening assistance part is a linear notch | incision formed in one or more along with one side of the longitudinal direction seal part in the position more than 1/2 of the height of cooked rice molded food, or It is a notch which consists of a notch part of predetermined shape, It is characterized by the above-mentioned.
According to the invention of claim 7, the bag can be easily opened, and when eating the cooked rice food, the food is hand-held without directly touching the cooked rice food through the remaining packaging material after cutting the top of the bag. It can be hygienic and your hands won't get dirty.

In order to overcome the above-mentioned problems and achieve the intended purpose, the method of packaging rice cooked food of the invention according to claim 8 of the present application,
It is a packaging method for obtaining a package in which cooked rice food is sealed with a heat-welding packaging material on the inner surface,
Covering the cooked rice food with a packaging material that forms a bag, superposing the inner surfaces of the end portions of the packaging material at positions that become the bag bottom and heat-sealing, thereby forming a lateral seal portion extending in the left-right direction,
In the left and right positions sandwiching the cooked rice molded food, in the position that becomes the left and right edges of the bag by pushing the packaging material on one side and the other side straddling the lateral seal portion on the front and back into the bag from the bag bottom side Forming a longitudinal seal portion extending in the up-down direction of the bag by crossing the transverse seal portion by heat-sealing the packaging material in which the inner surfaces are polymerized,
In a predetermined range from the bag bottom surface to the top portion side in the vertical seal portion, a superposed portion in which the inner surfaces of the packaging material are polymerized and welded to one side and the other side sandwiching the horizontal seal portion between the front and back sides. Are characterized by being formed respectively.
According to the invention which concerns on Claim 8, the sealing packaging body of the cooked rice molded food which can ensure a shape retention property while improving appearance can be efficiently manufactured with packaging machines, such as a horizontal bag making filling machine.

In the invention which concerns on Claim 9, the overlap part of the front and back in the said vertical direction seal part is made into the superposition | polymerization adhesion part which pinches | interposes a horizontal direction seal part at the time of formation of the said vertical direction seal part, and the outer surfaces of a packaging material superpose | polymerize each other. It is characterized by.
According to the ninth aspect of the present invention, when the vertical seal portion is formed, three overlapping surfaces are integrated by bonding in the height direction from the bag bottom surface to form a polymerization bonding portion by stacking six sheets of packaging material, thereby forming the bag bottom portion. Therefore, it is possible to obtain a package with improved shape retention at the bottom of the bag.

In the invention according to claim 10, when forming at least one of the longitudinal seal portions, an opening assisting portion that can be opened by tearing the bag in the left-right direction at the outer edge of the longitudinal seal portion is formed. It is characterized by that.
According to the invention of claim 10, since the opening assisting portion is formed together with the formation of the longitudinal seal portion, a good packaging body having no positional deviation such as a notch for opening with respect to the sealing position can be obtained. .

  According to the present invention, in addition to improving the appearance and ensuring the shape retention of the bag bottom, the degree of freedom of printing on the packaging material is increased for the sealed packaged cooked rice food product. And a packaging method for the packaging body.

It is a schematic perspective view which shows the package which concerns on an Example. (a) is a front view of the packaging body which concerns on an Example, (b) is a rear view of the packaging body which concerns on an Example. It is a side view of the package which concerns on an Example. It is a schematic perspective view which shows the package which concerns on the example of a change. It is a side view of the package which concerns on the example of a change shown in FIG. It is a principal part front view of the package which employ | adopted the example of a change of an opening assistance part. It is the schematic illustrated in the case of packaging with the horizontal bag-making filling machine the packaging method of the cooked rice foodstuff which concerns on an Example.

  Next, preferred embodiments of the packaged rice cooked food package and the packaging method thereof according to the present invention will be described below with reference to the accompanying drawings. The “front side” and “back side” of the bag refer to the “front side” and “back side” of the packaged product. In addition, as the cooked rice cooked food, the rice balls are illustrated as round rice balls in the examples, but sushi rice wrapped in a triangular rice ball or rice cracker, red rice or gomoku rice molded into a predetermined shape, and other cooking It is used for foods that are made of rice or other products in a predetermined shape.

  FIG. 1: is the schematic perspective view which looked at the package body of the cooked rice foodstuff which concerns on an Example from the bottom face side, Comprising: This package body 10 is the bag 12 which consists of a sheet-like packaging material, such as a transparent film. This is a sealed bag containing a round rice ball 14. As a packaging material, a heat-weldable plastic film having a thickness of 30 μm to 50 μm as a base material, or a heat-sealable material in which a thermoplastic synthetic resin layer such as polyethylene is laminated on a base material such as Japanese paper or pseudo Japanese paper The sheet material having a thickness of 30 μm to 50 μm is suitable, and the bag 12 is mainly printed with a trade name, other various patterns, etc. on the front side, but using a plain packaging material Also good. In addition, about the packaging material, the one surface side which comprises the inner surface side of the bag 12 which is the welding surface of a packaging material facing the rice ball 14 in a bag is made into an inner surface, and the outer surface side of the bag 12 is a non-welding surface of a packaging material. The other surface side to be configured is referred to as an outer surface.

  As shown in FIG. 1, a lateral seal portion 16 is formed at the bottom of the bag 12 so as to cross in the left-right direction (bag width direction). The horizontal seal part 16 covers the front and back of the rice ball 14 with a sheet-like packaging material in a U-shape, and both edges of the packaging material are polymerized in a palm shape at the bottom of the rice ball 14 in a standing state to form a cylindrical shape. The inner surface of the overlapped portion of the packaging material is welded and sealed with a predetermined width by heating the overlapped portion of the resulting packaging material, and the overlapped portion is predetermined from the bag body at the middle portion of the bag bottom. It is formed to extend in width. The extending proximal end of the lateral seal portion 16 is located at the approximate center of the thickness of the bag bottom portion corresponding to the length of the rice ball 14 in the front and back direction. Here, the lateral seal portion 16 is formed from a lateral weld portion 17a to which the packaging material polymerized in the lateral seal portion 16 is welded and a non-weld portion 17b slightly extending outward from the lateral weld portion 17a. The extension length (the overlapping width of the packaging material at the bottom of the bag) N1 is 1/3 of the thickness of the bottom of the bag. It is set to 1/2. In addition, since the thickness of the front and back of the rice ball 14 is generally about 30 mm to 40 mm, the extension length N1 of the lateral seal portion 16 is preferably formed to be about 10 mm to 20 mm. Thereby, sufficient sealing performance of the bag can be secured, and shape retention can be imparted to the bottom of the bag by the lateral seal portion 16 having a sufficient welding width. The welding width N2 of the welding part in the lateral seal part 16 is preferably about -2 mm to -3 mm of the extension length N1. As shown in FIG. 3, the lateral seal portion 16 extends from the extended proximal end by cutting the outer non-welded portion 17 b that is polymerized and welded when the lateral seal portion 16 is formed. It may be the horizontal welded portion 17a where the packaging material is welded over the entire width up to.

  In each of the left and right end portions of the bag 12, the inner surfaces of the packaging material are polymerized, and the overlap portion is heated and welded and sealed with a predetermined width to form a vertical seal portion 20 extending in the vertical direction. Yes. Both the vertical seal portions 20, 20 intersect the horizontal seal portion 16 on the bag bottom side. That is, since the bag 12 is sealed by the vertical and horizontal seal portions 16, 20, and 20, foreign matter can be prevented from entering the bag. As shown in FIG. 3, each vertical seal portion 20 is formed such that the packaging material is superposed at the approximate center of the thickness in the front and back direction of the bag 12 in a state where the rice ball 14 is accommodated. Here, the longitudinal seal portion 20 is composed of a longitudinal weld portion 21a to which the packaging material polymerized in the longitudinal seal portion 20 is welded and a non-weld portion 21b extending outward from the longitudinal weld portion 21a. The extension length from the inner base end on the bag body side, which is the inner edge of the vertical weld portion 21a, to the outer front end of the non-weld portion 21b (the overlapping width of the packaging material at the left and right edge portions of the bag) It is set to be shorter than the extending length N1 of the lateral seal portion 16. That is, by making both the vertical seal portions 20, 20 narrower than the horizontal seal portion 16, the vertical seal portions 20, 20 exposed in the standing display state are made narrower, and the appearance of the package 10 is improved. On the other hand, the lateral seal portion 16 located on the bottom surface of the bag that is not exposed in the display state can be widened to improve the shape retention of the bottom portion of the bag. The extension length M1 of the vertical seal portion 20 is preferably set to be equal to or less than the extension length N1 of the horizontal seal portion 16. Moreover, it is preferable that the extension length M1 of the vertical seal part 20 is set to about 6 mm to 10 mm, and the welding width M2 of the vertical weld part 21a is set to about 4 mm to 7 mm.

  As shown in FIG. 1 and FIG. 2, each packaging material is provided from the bottom of the bag on both the left and right sides of the rice ball 14 accommodated in the bag and on both sides of the bottom of the bag 12 across the lateral seal portion 16. Recessed portions 22 that are depressed inwardly toward the upper side are formed. Each folding part 22 is formed by pushing the lateral seal part 16 projecting downward at the bottom of the bag without pushing it inward, and the longitudinal seal part 20 after the packaging material is pushed in from the bag bottom side. Thus, when the longitudinal seal portion 20 is formed, the six packaging materials that are pushed inward and overlapped are heated, and the inner surfaces that serve as the welding surfaces are welded to each other. To do. Here, the packaging material is one-side weldable that can be welded and sealed only on the inner surface side, and the portion where the packaging material is pushed and folded on the bag bottom side of the longitudinal seal portion 20 is as follows. A polymerization part separated into three is formed.

  The three overlapping portions include a first overlapping portion 20a in which a longitudinal weld portion 21a in the longitudinal seal portion 20 intersects a lateral seal portion 16 in which inner surfaces of packaging materials overlap each other, and the first overlapping portion 20a. It is formed by two second overlapping portions 20b having longitudinal weld portions 21a in which the inner surfaces of the packaging material overlap each other on both sides of the first overlapping portion 20a located in the center.

  Each of the first overlapping portion 20a and the second overlapping portion 20b, 20b is formed by sandwiching and heating the packaging material at a predetermined pressure by the heating seal means when forming the longitudinal seal portion 20. The inner surfaces serving as the welding surfaces are welded to each other, and the vertical welding portion 21a is formed with a predetermined width. Thereby, the welding width of the vertical welding part 21a formed in the said 1st superposition | polymerization part 20a and the 2nd superposition | polymerization part 20b, 20b, and it formed toward the upper part of the bag 12 from the base end part T of each superposition | polymerization part. The welding widths of the vertical welding portions 21a are all the same welding width. The first overlapping portion 20a is sandwiched between the two second overlapping portions 20b and 20b and extends toward the bottom, and each of the second overlapping portions 20b and 20b has a central base end portion T. It extends so that it spreads toward the bottom.

  In this way, at the bottom of the bag 12, three overlapping portions 20a, 20b, and 20b in which the inner surfaces of the packaging material are thermally welded in a range corresponding to the amount of pressing of the packaging material are formed. The strength of the bottom of the 12 can be increased, and shape retention can be imparted to the bottom of the bag 12. That is, the packaging body 10 has the lateral seal portion 16 positioned transversely on the bottom surface of the bag, and three overlapping portions 20a, 20b, and 20b are formed on the bottom side of the left and right edges, respectively. The bag bottom is strengthened without assisting with a label or the like, and shape retention can be ensured. In the embodiment, the vertical welded portion 21a in the first overlapping portion 20a is illustrated as extending from the intersection with the lateral seal portion 16 to the upper side of the bag, but the extension length of the lateral seal portion 16 is illustrated. In the case where N1 is equal to the pushing amount of the packaging material in the folding portion 22, in the first overlapping portion 20a, the branch position (base end portion T) of each of the second overlapping portions 20b and 20b and the lateral seal portion 16 Since the extension base end coincides, the vertical welded portion 21a does not extend upward from the intersection with the lateral seal portion 16.

  As shown in FIG. 4 and FIG. 5, a part coat agent made of a heat-welding resin is applied to the part corresponding to the outer surface of the packaging material when the first polymerization part 20a and the second polymerization part 20b are polymerized. By using the packaging material subjected to the above, the lower end portion of the vertical seal portion 20 on the bottom side of the bag 12 is formed with the first overlapping portion 20a and the second overlapping portion 20b when forming the vertical seal portion 20. The part coating agent applied to the overlapping surfaces where the outer surfaces of the packaging material overlap each other is melted by heat by being sandwiched by the sealing means in a state where the packaging materials are stacked, and the first polymerization part 20a and the second polymerization part 20b and 20b are bonded together. As a result, in the height range corresponding to the folding amount of the folding portions 22 and 22 from the bottom surface of the bag, the six packaging materials composed of the three overlapping portions 20a, 20b, and 20b are overlapped and integrated with each other by thermal bonding. A columnar reinforced portion to be a polymerization adhesion portion is formed. The rice ball packaging 10 has a vertical seal portion 20 including a columnar reinforcing portion formed on the left and right sides of the bag 12, and the vertical seal portion 20 serves as two support columns to support the bottom of the bag. It can be set as the package 10 of the rice ball with more favorable property.

  As shown in FIG. 3, the lateral seal part 16, which is formed by superposing the packaging material on the bottom of the bag 12 and welding it when forming the bag 12, is projected downward from the bag bottom. It can be bent along the bottom of the bag by setting the inner rice ball 14 upright. The lateral seal portion 16 may be folded in either the front or back direction along the bottom surface of the bag, but the folding to the back side, which is the back side of the product, is the appearance of the package 10 when the rice ball 14 is displayed and sold. Is preferable in that it can be made favorable.

  As shown in FIG. 2A, on the front side of the bag 12 which is the front of the product, a product name display 26 such as the product name of the rice ball 14 is printed in advance on the packaging material. This product name display 26 is provided with a product name label after bagging or packaging, or by a printing means such as a thermal printer in the packaging material transport process in the packaging machine, as well as various design patterns. It may be provided by printing the product name.

  The packaging material on the back side of the bag 12 has a quality display column (quality display unit) 28. The quality display column 28 includes the item name, raw material name, date of manufacture, and consumption of the cooked rice food 14 contained in the bag. Item information (package information) such as the deadline, character information of the manufacturer, etc. and a barcode is displayed. As shown in FIG. 2B, such item information is displayed near the bottom of the bag 12, and is attached by a printing means such as a thermal printer in the process of transporting the packaging material in the packaging machine. Since item information is generally displayed in black or other dark colors, at least the quality display column 28 has a background column that is white or other in consideration of the visibility and distinguishability of the characters of the item information. It is preferable to use a light-colored packaging material. That is, by coloring the quality display column 28, which is an area where the item information is printed, with white or other light colors, the item information printed with black or other dark colors can be clearly displayed, and the discrimination is good. It becomes. Note that the item information can be printed at an arbitrary position by using a packaging material colored entirely in white or other light colors.

  Here, in the conventional packaging form, the lateral seal part is located on the back side of the bag, and the quality label is laminated and stuck on the back side of the bag. The label sticking position may be shifted or distorted, which may impair the appearance of the package. In contrast, in the packaging form of the embodiment, as described above, the packaged product information can be printed on the packaging material before packaging as described above, so that the display of the packaged product information is misaligned or distorted. It can be prevented that the package becomes inferior. Further, by printing directly on the packaging material, it is possible to print packaged product information for each item by switching data of print information of the thermal printer without preparing different quality display labels for each item. That is, it is possible to improve work efficiency by omitting troublesome work such as securing a plurality of types of quality display labels corresponding to multiple items and replacing the quality display labels when switching the packaging items. Further, since the quality label is not consumed, the running cost is not required, the resource can be saved, and the packaging form is environmentally friendly. Furthermore, since it is necessary to dispose downstream of the packaging machine as compared with the printing means, and a labeling device that requires an expensive and large installation space can be dispensed with, the cost of the apparatus for obtaining the rice ball packaging 10 can be reduced. Space can be saved. In particular, since the overlap portion of the film is not located in the quality display column 28, good printing can be performed without incurring a print defect such as a print deviation at the time of printing by the printing means.

  As shown in FIG. 2, the unsealed portion 21b at one end edge of the longitudinal seal portions 20 and 20 located on the left and right sides of the bag 12 has a V-shaped cutout portion as an opening assisting portion. A notch (notch) 24 is formed, and the bag 12 can be opened by tearing in the left-right direction (transverse direction) with the notch 24 as an opening base point. The opening notch 24 may be another notch such as a U-shape, semi-circle, trapezoid or U-shape. Further, various opening assisting portions that do not impair the sealing performance of the linear or arcuate cuts, the opening tape, or other bags 12 can be employed. Furthermore, the opening assisting portion only needs to be provided in at least one of the left and right longitudinal seal portions 20, but may be provided in each of the longitudinal seal portions 20 and 20. Moreover, it is preferable to provide an opening guide display 30 (see FIG. 2A) made up of markings and characters that can identify the opening start portion by the opening notch 24 or the like.

  The opening notch 24 is formed at a position near the top of the bag 12. Specifically, the cut line L of the bag by the opening notch 24 is, as shown in FIG. 2, an upper portion of the rice ball 14 from a position that is approximately ½ of the height of the rice ball 14 accommodated in the bag 12. It is preferable that the position is set closer. Thus, in the packaged product opened so as to cross the bag 12 with the opening notch 24 as an opening base point, the rice ball 14 whose lower part is covered with the packaging material can be grasped and eaten. Even if the cut line L in the transverse direction of the bag by the opening assisting part is located within the formation range of the quality display column 28 (below the upper end of the quality display column) as in the embodiment, the package information is printed. Since the quality display column 28 provided by the means is only a packaging material and does not overlap with an adherent such as a label, the hand is not soiled and the opening is not hindered.

  It should be noted that the cut line L by the opening assisting part such as the opening notch 24 passes through a position of 1/2 or more of the height of the rice ball 14 accommodated in the bag 12 and the upper part of the rice ball 14 may be lost. Most preferably, it is set at an appropriate position. Thereby, after opening, the head of the rice ball 14 can be exposed and eaten.

  In the state where the packaging body 10 is stood up, the upper or left and right sides of the rice ball 14 accommodated in the bag 12 can be handled by picking up the bag with a finger without touching the rice ball 14 during handling such as lifting the packaging body 10. A location 32 is provided, and this portion functions as a knob allowance. That is, it is possible to prevent the contained rice ball 14 from being held by hand during transportation from the manufacturer to the retail store or during the display of the product at the retail store. It can prevent the value from deteriorating. Further, by providing the empty space 32, it is possible to increase the commercial value by giving the package 10 a sense of volume.

  Here, in the embodiment, one (single) opening assisting portion (opening notch 24) is formed in the longitudinal seal portion 20, but a plurality of opening assisting portions (cuts) in a predetermined range of the longitudinal seal portion 20 are provided. Or notches). For example, as in the modification shown in FIG. 6, the outer end edge of the longitudinal seal portion 20 is a serrated cutting edge in which V-shaped cutout portions are arranged side by side, and any of the portions is opened. It can also be set as the auxiliary unit 24. The opening assisting unit has such sawtooth-shaped continuous valleys or a plurality of valleys within a predetermined range as opening start parts, and is opened from any opening start part by the consumer's selection. It may be a thing. In addition, about the modification shown in FIGS. 4-6, the same code | symbol is attached | subjected and shown to the same part as an Example.

  And the package 10 comprised as mentioned above can be manufactured with the horizontal bag making and filling machine shown in FIG. That is, in the packaging machine, a strip-shaped film F as a packaging material drawn out from a supply source and formed into a U-shape is formed into a cylindrical shape, and a rice ball 14 supplied by a conveyor into the cylindrical film F is predetermined. The edge of the film F in the longitudinal direction is polymerized while the rice balls 14 accommodated at intervals are conveyed downstream, and the overlapped portion is heated and sealed by the side seal means 36. Thus, a lateral seal portion 16 extending in the left-right direction at a position on the bag bottom side of the package 10 is formed continuously in the transport direction of the film F. Further, in the guide path of the film F drawn from the supply source, the package product information is printed in the quality display column 28 previously attached to the area corresponding to the position on the back of the package 10 by a printing means such as a thermal printer. Printed.

  The cylindrical film F in which the transverse seal portion 16 is formed intersects the transport direction by the end seal means 38 including a pair of seal bodies at the front and rear positions sandwiching the rice ball 14 in the film F downstream of the transport. The vertical seal part 20 located at the left and right edges of the bag 12 is formed by heat sealing and cutting in the direction. Further, one side portion of the tubular film F in which the lateral seal portion 16 is formed is laterally moved at the front and rear positions of the rice ball 14 before the film F is sandwiched by the seal body to form the longitudinal seal portion 20. The upper and lower parts straddling the direction seal portion 16 are pushed inward by the pushing means 39. In this state, the film F is sandwiched and heat-sealed by the sealing body, whereby a vertical seal portion 20 that intersects the horizontal seal portion 16 and extends in the vertical direction of the bag 12 is formed, and the horizontal seal portion. Folded portions 22 are formed on both sides of the 16. And in the predetermined range corresponding to the pushing amount of a film toward the top part side from the bag bottom face in the vertical direction seal part 20, the two films F crossed the horizontal direction seal part 16 and were heat-welded. A package in which a first overlapping portion 20a and second overlapping portions 20b and 20b in which two films F are polymerized and thermally welded on one side and the other side sandwiching the first overlapping portion 20a on the front and back sides are formed. 10 is obtained. That is, the packaging body 10 of the embodiment can be efficiently manufactured by a horizontal bag making and filling machine, and by using a continuous film, the packaging material cost can be reduced and the packaging ability can be improved.

  In addition, when using a single-side weldable film, the film F is sealed by using a film in which the part coat is applied to the outer surface of the film to be a polymerization surface of the first polymerization portion 20a and the second polymerization portion 20b. The first overlapping portion 20a and the second overlapping portions 20b and 20b are bonded when sandwiched between the bodies. That is, when the longitudinal seal portion 20 is formed, the two overlapping portions 20b and 20b are bonded to the first overlapping portion 20a, and six packaging materials including three overlapping portions 20a, 20b, and 20b are formed. Since the columnar reinforcement part which consists of the superposition | polymerization adhesion part which overlap | superposed and united by heat bonding mutually is formed, the package 10 which raised the intensity | strength of the bag bottom part can be manufactured more efficiently.

  Further, the knife for cutting the film F in the end seal means 38 in a direction intersecting the transport direction is provided with an opening assisting portion forming means such as a cutter corresponding to one of the longitudinal seal portions 20 to heat the film F. An opening assisting portion 24 is formed in the longitudinal seal portion 20 when sealing and cutting. Thereby, the package 10 which is easy to open can be manufactured efficiently. Note that the opening assisting portion 24 may be formed in the longitudinal seal portion 20 after the longitudinal seal portion 20 is formed.

12 bags, 14 rice balls (rice cooked food), 16 transverse seal part 20 longitudinal seal part, 20b second polymerization part (front side polymerization part, back side polymerization part)
22 Folding part, 24 Opening notch (notch, opening assist part)
28 Quality display column (quality display section)

Claims (10)

A package of cooked rice molded food with the cooked cooked rice (14) sealed in a bag,
At the bottom of the bag (12) made of a single sheet-like packaging material, the inner surfaces of the end portions of the packaging material are polymerized and welded to be positioned in the middle of the thickness of the bag (12) to the left and right A transverse seal (16) formed to extend;
In the left and right edge portions of the bag (12), the longitudinal seal portions (20, 20) formed so that the inner surfaces of the end portions of the packaging material are polymerized and welded to extend up and down the bag (12). When,
In the left and right ends of the bottom of the bag (12), the folded portions (22, 22) formed on both sides sandwiching the lateral seal portion (16) in the front and back direction and recessed inward of the bag,
An opening assisting portion (24) that can be opened by tearing the bag (12) in the left-right direction,
Wrapped on the bag bottom side of both longitudinal seals (20, 20) on the front side of the bag (12), the inner surface of the packaging material is polymerized and welded, and on the back side of the bag (12) A package for cooked rice food, characterized in that a back-side polymerized portion (20b), in which the inner surfaces of the material are polymerized and welded, is provided with the transverse seal portion (16) interposed therebetween.   The longitudinal seal portion (20) is formed so that the packaging material is polymerized at approximately the center of the front and back thickness of the bag (12) containing the cooked rice food (14). A package of cooked rice food according to 1.   The overlapping width of the packaging material at the left and right edges where the longitudinal seal portion (20) is formed in the bag (12) is the packaging material at the bottom of the bag where the lateral seal portion (16) is formed in the bag (12). The packaged body for cooked rice food according to claim 1 or 2, characterized in that it is set to be narrower than the polymerization width.   The back side of the bag (12) is provided with a quality indicator (28) on the packaging material on which the packaged product information is identifiably printed. A package of cooked rice food as described.   The said horizontal direction seal | sticker part (16) is comprised so that it can be bent toward the back side of a bag (12) along a bag bottom face. Packaged rice cooked food.   The overlapping portions (20b, 20b) of the longitudinal seal portion (20) are bonded to a packaging material between opposing surfaces of the overlapping portions (20b, 20b). A package of cooked rice food according to any one of the above.   The opening assisting part (24) is formed in a linear or linear form on one side of the longitudinal seal part (20, 20) at a position of 1/2 or more of the height of the cooked rice food (14). The packaged body for cooked rice food according to any one of claims 1 to 6, wherein the package is a notch comprising a notch or a notch having a predetermined shape. It is a packaging method for obtaining a package in which the inner surface is a heat-weldable packaging material and sealed with cooked rice food (14),
The cooked rice (14) is covered with a packaging material forming a bag (12), and the inner surfaces of the end portions of the packaging material are polymerized at the position that becomes the bottom of the bag and heat-sealed, thereby extending in the lateral direction. Forming a seal (16),
In the left and right positions sandwiching the cooked rice (14), the packaging material on one side and the other side straddling the lateral seal portion (16) on both sides is pushed into the bag from the bag bottom side, and the bag (12 The vertical seal portion (20) extending in the vertical direction of the bag (12) crossing the lateral seal portion (16) by heat sealing the packaging material whose inner surfaces are overlapped at the positions of the left and right edges of the bag (12) Form the
The inner surface of the packaging material is overlapped on one side and the other side sandwiching the lateral seal part (16) between the front and back sides within a predetermined range from the bag bottom surface to the top part side in the longitudinal seal part (20). A method for wrapping cooked rice foods characterized in that the welded polymerized portions (20b) are formed respectively.   The overlapping portions (20b, 20b) on the front and back sides of the longitudinal seal portion (20) are superposed on the outer surfaces of the packaging material by sandwiching the transverse seal portion (16) when the longitudinal seal portion (20) is formed. The method for packaging cooked rice food according to claim 8, wherein the method is an adhesive part.   When forming at least one of the longitudinal seal portions (20), an opening assisting portion (24) capable of tearing and opening the bag (12) in the left-right direction at the outer edge of the longitudinal seal portion (20) The method for packaging cooked rice food according to claim 8 or 9, characterized in that:

Images