JP2007126179A - Food packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a food packaging bag in which a rice ball or the like does not break the bottom when it is opened. <P>SOLUTION: An inner sheet 3 as well as an outer sheet 1 consist of two sheets of separable sheet materials 31 and 32, and inside end edges of the two sheet materials 31 and 32 are respectively folded back outward, and these folded-back parts 311 and 321 are piled up one upon another and correspond to a separating part 1a of the outer sheet 1. In addition, parts corresponding to the bottom part of a rice-processed food R of the folded-back parts 311 and 321 have a pair of notches c and c corresponding to both outside of the thickness of the rice-processed food R respectively in the width direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement in a food packaging bag for packaging cooked rice processed food such as hand-rolled rice balls that are manually wound with attached seaweed after opening.

  Conventionally, the package of triangular rice balls has been packaged so that the packaging material is in close contact with the rice balls so as to have the same outer shape as the rice balls (for example, see Patent Document 1). However, recently, rice balls that have been softly grasped have been favored. In order to prevent the shape of the rice balls from being lost, and to prevent the rice balls from cracking when they are taken out, the processed foods such as rice balls are used as packaging materials. There has been proposed a food package or the like that is packaged with a margin in the internal space so as not to be compressed (see, for example, Patent Documents 2 to 4).

  Such a food package usually consists of an outer sheet that can be separated in the longitudinal direction by a cut tape, and an inner sheet that is overlapped with the outer sheet with nori interposed between the outer sheets. The packaging material in which the enclosed area is heat-welded is folded in half and wrapped with the cooked rice food, and the two sides and the upper opening are overlapped and sealed, and displayed at the store. The packaging material is configured such that when the outer sheet is separated by a cut tape and pulled to the left and right, the inner sheet is also separated to the left and right, and the rice balls can be taken out.

Japanese Patent No. 3076559 JP 2004-81130 A JP 2004-89130 A JP 2004-154064 A

  However, the conventional food package as described above sometimes cracks the bottom of the rice ball when opened. At the time of opening, the packaging material is often pulled diagonally upward and to the left and right. In such a case, the inner sheet is separated so that it can be lifted to the left and right together with the outer sheet. It is considered that the bottom of the rice ball is easily cracked especially when the rice ball is held softly. Such a problem of bottom cracks also occurs in a food package or the like in which a packaging material is packaged in close contact with a rice ball.

  This invention is made | formed in view of such a situation, and it aims at providing the food packaging bag which prevented the bottom rice cracked processed foods, such as a rice ball, at the time of opening.

(1) The food packaging bag of the present invention comprises a packaging material 4 comprising an outer sheet 1 having a longitudinal separating portion 1a and an inner sheet 3 superimposed on the outer sheet 1 with a sheet-like food 2 interposed therebetween. A food packaging bag F that is folded in half so that the cooked rice processed food R is enclosed in a sealed state,
The inner sheet 3 is composed of two sheet materials 31 and 32 that can be separated together with the outer sheet 1, and the inner edges of the two sheet materials 31 and 32 are folded, respectively, and the folded portions 311 and 321 are The portions that overlap each other and correspond to the separation portion 1a of the outer sheet 1 and that correspond to the bottom portions of the cooked rice processed food R in the folded portions 311 and 321 are on both outer sides of the thickness of the cooked rice processed food R. A pair of corresponding cuts c and c are formed in the width direction, respectively.

  According to such a configuration, when the outer sheet 1 is separated in the longitudinal direction (by a cut tape or the like) at the time of opening, the outer sheet 1 is pulled apart to the left and right together with the inner sheet 3 composed of the two sheet materials 31 and 32. Thus, the cooked rice processed food R can be taken out. At that time, since the pair of cuts c and c are formed in the folded portions 311 and 321 of the two sheet materials 31 and 32, respectively, first, the sheet material 31 corresponding to the side surface portion of the cooked rice processed food R is provided. 32 is pulled out, and then the inner sheet 3 is pulled out in two stages so that the folded portions 311 and 321 between the notches c and c corresponding to the bottom of the cooked rice processed food R are pulled out.

  In the first stage in which the sheet materials 31 and 32 corresponding to the side portions of the cooked rice processed food R are pulled out to the left and right, the folded portions 311 and 321 contacting the bottom of the cooked rice processed food R are the bottom of the cooked rice processed food R. Therefore, the force in the pulling direction does not act on the bottom of the cooked rice processed food R, so that, for example, the outer sheet 1 is pulled together with the inner sheet diagonally upward and to the left and right. Even if there is a thing, the bottom becomes difficult to break. Next, in the second stage in which the folded portions 311 and 321 corresponding to the bottom of the cooked rice processed food R are pulled out, the folded portions 311 and 321 (the cut pieces 311a and 321a) between the cuts c and c have a turnover allowance. Since the sheet materials 31 and 32 are pulled out to the left and right without acting in the pulling direction on the bottom of the cooked rice processed food R while it is deformed to be further rewound until it disappears, even if the outer sheet 1 is inside Even if the sheet 3 is pulled diagonally upward and to the left and right, the bottom becomes difficult to break.

  According to the food packaging bag of the present invention, in the folded portion of the inner edge corresponding to the bottom of the processed rice food of the two sheets constituting the inner sheet, the cooked rice in the direction perpendicular to the longitudinal direction of the outer sheet Since a pair of cuts corresponding to both outer sides of the thickness of the processed food are formed, at the time of opening, first, the sheet material of the portion corresponding to the side portion of the cooked rice processed food is pulled out to the left and right, and then the processed rice cooked food Since the inner sheet is pulled out in two stages so that the folded portion between the bottom and the corresponding notch is pulled out to the left and right, even if the outer sheet is pulled diagonally upward and left and right together with the inner sheet Even if it exists, the bottom part of cooked rice processed food becomes difficult to break.

A food packaging bag according to an embodiment of the present invention will be described in detail with reference to the drawings.
1 (a) is a perspective view seen from the inside of the packaging material, (b) is a cross-sectional view thereof, and FIG. 2 (a) is a half-folded packaging material containing cooked rice processed food (hand-rolled triangular rice balls). (B) is a perspective view of the food packaging bag, FIG. 3 is a schematic explanatory view of the opening operation of the food packaging bag, (a) is a state in which the outer sheet is separated with a cut tape, ( (b) is a state where the outer sheet and the inner sheet are separated into left and right, and (c) is an explanatory view of a state where the cooked rice food is placed on a folded sheet food (nori) and taken out. As shown in these drawings, the food packaging bag F includes an outer sheet 1 that is separable in the longitudinal direction at the central portion, and an inner sheet 3 that is superimposed on the outer sheet 1 via a sheet-like food 2. The resulting packaging material 4 is folded in half, and the cooked rice processed food R is enclosed in a sealed state.

  As shown in FIG. 1, the outer sheet 1 and the inner sheet 3 are heat-sealed in a predetermined enclosed area outside the sheet-like food 2. The inner sheet 3 is composed of two sheet materials 31 and 32 that overlap with a predetermined width so as to be separable in the same direction at a portion overlapping the separation portion (cut tape) 1a at the center in the longitudinal direction of the outer sheet 1, and in the overlapping portion 3a The inner edges of the sheet materials 31 and 32 are folded, and the portions corresponding to the bottoms of the cooked rice processed food R (shown by the two-dot chain line) in the folded portions 311 and 321 are orthogonal to the longitudinal direction of the outer sheet 1. A pair of cuts c, c corresponding to both outer sides of the thickness of the cooked rice processed food R are formed in the direction (the direction along the bottom of the cooked rice processed food R), and between the pair of cuts c, c is the cooked rice An interval K larger than the thickness of the processed food R is set, and cut pieces 311a and 321a are formed between the cuts c and c, respectively.

  As shown in FIG. 2 (a), such a packaging material 4 is folded in half with the inner sheet 3 inside, with the rice processed food R placed on the bottom thereof, both side edges and upper edges. The parts that are heat-sealed S on both sides of the part are heat-sealed again to form a bag, and then the mouth is sealed with a sealing material (not shown) or the like, so that FIG. A food packaging bag F as shown in FIG. Since this food packaging bag F has a margin in the internal space so that the cooked rice processed food R is not squeezed by the inner sheet 3, the processed rice cooked food R that has been softly gripped does not lose its shape. A high-quality appearance can be obtained. In addition, although all the embodiments described later are the same, the cooked rice processed food R includes various rice balls held in a triangular shape, a barrel shape, and the like, as well as rice cakes. Further, the sheet-like food 2 includes light-fried eggs and tatami rice cakes in addition to the sheet-like seaweed.

  In order to open such a food packaging bag F, first, as shown in FIG. 3A, the tip of the cut tape 1a attached to the outer sheet 1 (at the upper end of the food packaging bag F) is moved downward. The outer sheet 1 can be separated in the longitudinal direction by pulling it down and turning it further to the back side. In this state, the outer sheet 1 can be separated to the left and right together with the inner sheet 3 composed of the two sheet materials 31 and 32 that overlap each other by a predetermined width. At that time, a pair of cuts c and c are formed in the folded portions 311 and 321 in the overlapped portion 3a of the two sheet materials 31 and 32, and the cooked rice is processed into the cut pieces 311a and 321a between the cuts c and c. Since the food R is placed, first, the sheet materials 31 and 32 corresponding to the side portions of the cooked rice processed food R are pulled out, and then the cut pieces 311a and 321a corresponding to the bottom of the cooked rice processed food R are pulled out. As shown in FIG. 3B, the inner sheet 3 is pulled out in two stages, so that, for example, the outer sheet 1 may be pulled together with the inner sheet 3 obliquely upward and to the left and right. Even if it exists, it becomes difficult to break the bottom part of the cooked rice processed food R, and as shown in FIG. 3 (c), the cooked rice processed food R having no crack at the bottom can be taken out in a state of being placed on the folded sheet-like food 2. . 3A to 3C schematically show the opening operation, and in the actual opening operation, the pulled state of the outer sheet 1 and the inner sheet 3 may be shifted to the left and right. Moreover, in FIG.3 (b), the front of the sheet-like food 2 is fractured | ruptured so that the behavior of the cutting pieces 311a and 321a can be understood.

  More specifically, since the processed rice R is placed on the cut pieces 311a and 321a at the bottom of the packaging material 4, in the first stage, the outer sheet 1 is pulled together with the inner sheet 3 diagonally upward and to the left and right. Since the cut pieces 311a and 321a are deformed so as to be wound back by receiving frictional resistance from the cooked rice processed food R (see FIG. 3 (b)), the force in the pulling direction is absorbed by the deformation, The force in the pulling direction does not act on the bottom of the cooked rice processed food R, and only the sheet materials 31 and 32 corresponding to the side portions of the cooked rice processed food R are pulled left and right.

  Next, in the second stage, since the cutting pieces 311a and 321a are deformed so as to be further wound until there is no allowance for folding, the force in the pulling direction is absorbed, and in the meantime, at the bottom of the cooked rice processed food R The sheet materials 31 and 32 are pulled left and right without causing a force in the pulling direction to be completely separated. Even if the outer sheet 1 is pulled diagonally upward and to the left and right together with the inner sheet 3 by the cut pieces 311a and 321a having such folding allowances, the bottom part is passed through the first stage and the second stage. Is difficult to break. In addition, when the outer sheet 1 is pulled horizontally or diagonally downward to the left and right together with the inner sheet 3, a force that generates a crack does not act on the bottom of the cooked rice processed food R, so that further cracking occurs. Less likely to occur.

  In this way, the inner edges of the inner sheets 31 and 32 are folded back, and the gap K larger than the thickness of the cooked rice processed food R is set at a portion corresponding to the bottom of the cooked rice processed food R in the folded portions 311 and 321. By forming the cuts c and c, the cooked rice processed food R can be taken out without causing cracks at the bottom when opened, regardless of the packaging form of the food packaging bag F or the finished state of the cooked rice processed food R. it can. In addition, in order to acquire such a bottom crack prevention effect, although the width | variety of the above-mentioned folding | returning part 311 and 321 should just be about 20-50 mm or 1/3 or more of the length of the bottom part of the cooked rice processed food R, it is good. The lengths of the cuts c and c are preferably set to approximately the full width of the folded portions 311 and 321.

  4 (a) to 4 (b) show other examples. In any case, the sheet-like food 2 is not wetted by receiving moisture from the cooked rice food R, and the scent of the sheet-like food 2 is shown. The food packaging bag F which is made not to escape is shown. In FIG. 4A, intermediate folded portions 31b and 32a are formed in the intermediate portions of the inner sheets 31 and 32, the inner edges thereof are folded outward to form folded portions 311 and 321 and the inner portions 31a and 32a are formed. 32a overlaps and the superposition | polymerization part is weakly sealed. Even in such a configuration, the portion corresponding to the bottom of the cooked rice processed food R (indicated by a two-dot chain line) in the folded portions 311 and 321 is a direction orthogonal to the longitudinal direction of the outer sheet 1 (the bottom of the cooked rice processed food R). A pair of cuts (not shown) corresponding to both outer sides of the thickness of the cooked rice processed food R are respectively formed in the direction along the thickness of the cooked rice processed food R, and the pair of cuts are set to be larger than the thickness of the cooked rice processed food R By forming the cut pieces between the cuts (see FIG. 1), as in the previous embodiments, the outer sheet 1 may be pulled together with the inner sheet 3 diagonally upward and to the left and right. Even if it exists, the cooked rice processed food R can be taken out without breaking the bottom.

  4B and 4C, the inner edges of the inner sheets 31 and 32 are folded outward to form folded portions 311 and 321 and overlap each other. In the overlapping portion 3a, the inner sheet 31 is overlapped. , 32 are folded so as to be fitted to each other, whereby the sheet-like food 2 is prevented from receiving moisture from the cooked rice processed food R and the scent of the sheet-like food 2 is prevented from escaping. Even in such a configuration, the portion corresponding to the bottom of the cooked rice processed food R (indicated by a two-dot chain line) in the folded portions 311 and 321 is a direction orthogonal to the longitudinal direction of the outer sheet 1 (the bottom of the cooked rice processed food R). A pair of cuts (not shown) corresponding to both outer sides of the thickness of the cooked rice processed food R are respectively formed in the direction along the thickness of the cooked rice processed food R, and the pair of cuts are set at a larger interval than the thickness of the cooked rice processed food R, By forming the cut pieces between the cuts (see FIG. 1), as in the previous embodiments, the outer sheet 1 may be pulled together with the inner sheet 3 diagonally upward and to the left and right. Even if it exists, the cooked rice processed food R can be taken out without breaking the bottom.

  It should be noted that the present invention is not limited to the embodiments, and it is free to make design changes and improvements as necessary, as long as it does not depart from the gist of the invention. The diversion and diversion of the configuration between the forms is also free. For example, the packaging form of the food packaging bag may be such that the packaging material is in close contact with the cooked rice processed food (for example, rice ball) and packaged. In addition to the heat-weldable resin sheet, the outer sheet and the inner sheet may be a paper material bonded to a heat-weldable resin sheet, or may be a paper material. In the case of a paper material, it may be joined by an adhesive instead of heat sealing.

(A) is the perspective view seen from the inner side of the packaging material of the food packaging bag which concerns on embodiment of this invention, (b) is BB arrow sectional drawing of (a). (A) is a perspective view of the state which put the cooked rice processed food in the packaging material folded in half, (b) is a perspective view of a food packaging bag. (A) is a state where the outer sheet is separated with a cut tape, (b) is a state where the outer sheet and the inner sheet are separated into left and right, (c) is explanatory drawing of the state which put out the rice cooked food on the folded sheet food (nori), and took it out. The cross section of the packaging material of the other food packaging bag is shown, (a) is a cross-sectional view of the packaging material in which the inner edges of the two sheet materials are overlapped and the overlapping portion is weakly sealed, and (b) is Sectional drawing of the packaging material with which the inner edge of a sheet material fits mutually, (c) is sectional drawing of a different packaging material with which the inner edge of two sheet materials fits each other.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Outer sheet, 1a ... Separation part, 2 ... Sheet-like food, 3 ... Inner sheet, 31, 32 ... Sheet material, 311, 321 ... Folding part, 311a, 321a ... Cut piece, R ... Processed rice food, c ... cutting

Claims (1)

A packaging material (4) comprising: an outer sheet (1) having a separation part (1a) in the longitudinal direction; and an inner sheet (3) superimposed on the outer sheet (1) via a sheet-like food (2). Is a food packaging bag (F) in which the rice cooked food (R) is wrapped in a sealed state,
The inner sheet (3) is composed of two sheet materials (31) and (32) that can be separated together with the outer sheet (1), and the inner edges of the two sheet materials (31) and (32) are respectively The folded portions (311) and (321) are overlapped to correspond to the separating portion (1a) of the outer sheet (1), and the cooked rice processed food in the folded portions (311) and (321) ( A pair of cuts (c) and (c) corresponding to both outer sides of the thickness of the cooked rice processed food (R) are formed in the width direction in portions corresponding to the bottom of R), respectively. bag.

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