JP4902148B2 - Packaging for microwave oven heating - Google Patents

Description

The present invention automatically and standing pouch for a microwave oven heating which example Bei the vapor release section is opened, to a microwave oven for heating packaging a combination of a sleeve-like paper case by the internal pressure rise due to microwave heating.

  Conventionally, as described in, for example, Patent Document 1, as a microwave heating packaging body in which a standing pouch for heating a microwave oven and a sleeve-like paper case are combined, a front plate, a bottom plate, and a back plate are sequentially connected. A paper case that surrounds the front part of the standing pouch from the front part through the bottom part to the rear part, and joins the front plate, the upper end part of the rear plate, and the upper side part of the standing pouch so that the standing pouch stands on the bottom plate. What is supported by the state is known. In the case of this microwave oven packaging body, the standing pouch is surrounded by a paper case in a triangular shape on the side, so when standing in a microwave oven and heating an unstable standing pouch, There exists an advantage which can be stood and heated in a more stable state. Further, in paragraph [0008] of FIG. 5 and FIG. 5, the bottom plate is folded outward through a folding line at the center, and the paper case is folded flat, thereby handling during transportation. It also describes making it easier.

JP 2001-19061 A

  However, in the case of the conventional microwave oven packaging body, since the bottom plate is folded outwardly and folded flat, there is no self-supporting property, so the display will be performed with the bottom plate spread flat. There is a problem of taking up the display area. In particular, since the packaging body has a triangular shape on the side, it is difficult to stack and display, and a large space is required for display when the bottom plate is widened.

  The present invention has been made in view of the above-mentioned conventional problems, and in a microwave oven heating package in which a standing pouch for microwave oven heating and a sleeve-like paper case are combined, it is stable and independent during microwave oven heating. The purpose is not only to obtain the characteristics but also to be able to obtain the independence in a compact state at the time of display.

For the above-mentioned purpose, the present invention comprises a steam vent that is automatically opened by an increase in internal pressure due to microwave heating on a bottom plate of a paper case in which a front plate and a back plate are connected before and after the bottom plate. A standing pouch for heating a microwave oven is placed, the front plate and the back plate are folded from the bottom plate to sandwich the standing pouch, and the tips are joined together or the tips are each of the standing pouch. Provided is a microwave heating packaging body, characterized in that the bottom plate is joined to the upper portion, and the bottom plate is mountain-folded upward at the center in the front-rear direction and inserted into the recess at the bottom of the standing pouch. It is.

Further, in the present invention, on the left and right of the front plate or the back plate, holding pieces folded inward and holding the side portions of the standing pouch are connected,
The left and right sides of the bottom plate in the unfolded shape are cut into a V shape with the intersection with the upward mountain fold line as the apex, and the front and rear surfaces of the mountain folded bottom plate each have a trapezoidal shape,
Convex cuts are formed in the bottom plate from the folding lines between the front plate and the back plate and the bottom plate, with both ends in contact with the folding line. Protruding downward along with the face plate to form a leg,
That the center of the bottom left and right direction is hollowed out,
Is included as a preferred embodiment thereof.

  In the present specification, front and rear refer to the connecting direction of the front plate, the bottom plate, and the back plate, and left and right refer to a plane perpendicular direction to the front and rear direction.

  In the microwave oven packaging body of the present invention, the bottom plate of the paper case is folded upward, and the folded bottom plate is inserted into the recessed portion of the bottom of the standing pouch so as to cover the bottom of the standing pouch. Since it pushes up, it can accommodate a standing pouch in the state which narrowed the depth (width | variety of the front-back direction) of the bottom part. For this reason, the side surface shape of the packaging body for heating a microwave oven has a triangular shape with a short bottom as a whole, a compact shape with a small depth, and a triangular shape as a whole.

  On the other hand, when heating with a microwave oven, if the bottom plate is pulled out and spread out, the side shape of the microwave oven heating package will be a triangular shape with a sufficient base length as a whole. can get. Also, even if it is heated in the microwave oven while it is in the state of display, the bottom plate is pushed out from the recess at the bottom of the standing pouch and expands without heating even if it is heated in the microwave oven while displaying. The standing pouch can be prevented from falling in the microwave.

  First, based on FIGS. 1-8, the 1st example of the package for microwave oven heating which concerns on this invention is demonstrated.

  1 is a front view of a microwave heating packaging according to a first example of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a development view of a paper case, and FIG. Fig. 5 is an exploded perspective view showing an example of the standing pouch before sealing the edge, and Fig. 5 is a plan view showing a state in which the edge of the standing pouch in the exploded state shown in Fig. 4 is sealed and the bottom is slightly widened. 6 is a perspective view in the middle of assembling the microwave heating package according to the first example of the present invention, and FIG. 7 is a perspective view after completion of the assembly of the microwave heating package according to the first example of the present invention. 8 is a cross-sectional view corresponding to the AA portion of FIG. 1 in a state where the standing pouch is expanded by heating in the microwave oven. In addition, in each figure, the same code | symbol shows the same member or site | part.

  1 and 2, 1 is a paper case, and 2 is a standing pouch for heating a microwave oven.

  As clearly shown in FIG. 3, the paper case 1 has a front plate 6 and a back plate 7 connected to each other before and after the bottom plate 3 via folding lines 4 and 5. A mountain fold line 8 is set at the center in the front-rear direction of the bottom plate 3 so as to cross the bottom plate 3 left and right. In addition, the left and right sides of the bottom plate 3 are cut into a V shape with the intersection with the mountain fold line 8 set on the bottom plate 3 as the apex. When the mountain is folded upward, the front and rear surfaces of the mountain-folded bottom plate 3 are configured so as to form a trapezoidal shape. As will be described later, the mountain-folded bottom plate 3 is inserted into the recess at the bottom of the standing pouch 2, and the bottom plate 3 has a trapezoidal shape with the front and rear surfaces bordering on the top of the mountain-folded bottom plate 3. The reason for this is to make it easier to insert into the recess at the bottom of the standing pouch 2. Further, in the middle portion near the front end portion of the front plate 6 (the end opposite to the side connected to the bottom plate 3), two perforations and intermittent for cutting and opening the front plate 6 in a band shape An opening line 9 such as a typical slit crosses left and right, and a connecting piece 11 is connected to the front end portion of the back plate 7 via a folding line 10.

  The standing pouch 2 is not particularly limited as long as it is for microwave oven heating provided with a steam vent that is automatically opened by an increase in internal pressure accompanying microwave heating, but an example thereof is shown in FIGS. 4 and 5. explain.

  As shown in FIGS. 4 and 5, the standing pouch 2 of this example includes a front surface portion 12 and a back surface portion 13, and a bottom surface portion 14 that is folded and joined between the front surface portion 12 and the back surface portion 13. It is comprised from the peelable film 15. The front surface portion 12 and the back surface portion 13 are each composed of a synthetic resin film in which a heat fusion layer is laminated on one side of the base material layer, and are laminated with the heat fusion layer side facing each other. The bottom surface portion 14 is also made of the same synthetic resin film as the front surface portion 12 and the back surface portion 13, and is folded into a V shape with the heat-sealing layer on the outside, and the front surface portion 12 faces the vertex of the V shape inward. And is sandwiched between the lower edges of the back surface portion 13.

  Near the upper edge between the front surface portion 12 and the back surface portion 13, a tape-shaped easily peelable film 15 is sandwiched across the width direction. This easily peelable film 15 is heat-sealed to the front surface portion 12 or the back surface portion 13 in advance.

  As shown in FIG. 5, the front surface portion 12 and the back surface portion 13 are band-shaped with side edge seal portions 16, 17 with both side edges sandwiched between the bottom surface portion 14 and the easily peelable film 15. It is heat-sealed. Further, the bottom surface portion 14 folded into a V-shape is a bottom edge seal portion 18 in which one (upper side in the figure) free end side edge portion is curved downwardly concavely with respect to the lower edge portion of the front surface portion 12. While being heat-sealed, the other (lower side in the figure) free end side edge portion is heat-sealed with a bottom edge seal portion 19 whose upper side is similarly curved with respect to the lower edge portion of the back surface portion 13. Yes. Accordingly, the bottom surface portion 14 is heat-sealed to the front surface portion 12 and the back surface portion 13 in a state of being folded inward, and the bottom edge seal portions 18 and 19 and the bottom surface portion 14 are folded to the bottom portion of the standing pouch 2. A concave portion associated with is formed. In addition, the standing pouch 2 is a packaging bag that is in a self-supporting state when the folded bottom surface part 14 is pushed down by the weight of the contents and the bottom part is expanded into a substantially elliptical shape. Reference numeral 20 denotes an upper edge seal portion formed after filling the contents.

  In FIG. 5, a notch 21 serving as a tear starting point at the time of opening is cut from the outer edge side of a portion of the left side edge seal portion 16 sandwiching the easily peelable film 15. Further, the side edge seal portion 16 around the notch 21 where the peelable film 15 is interposed is a heat-sealed portion (easy peel) between the other front surface portion 12 and the back surface portion 13 where the easy peelable film 15 is not sandwiched. The side edge seal portions 16 and 17 where the adhesive film 15 is not sandwiched, the bottom edge seal portions 18 and 19 and the upper edge seal portion 20) are easily peelable seal portions.

  Corresponding to the formation position of the notch 21, a rectangular projecting seal portion 22 projecting inward from the inner edge of the side edge seal portion 16 is formed, and the notch 21 has a tip substantially in contact with the projecting seal portion 22. Extends to position. The protruding seal portion 22 is a heat-sealed portion between the front surface portion 12 and the back surface portion 13 sandwiching the easily peelable film 15, and the easily peelable film 15 is sandwiched by sandwiching the easily peelable film 15. Compared with the heat-sealed part between the other front part 12 and the back part 13 which is not provided, it is an easily peelable seal part.

  When the standing pouch 2 containing the contents and sealed is heated in a microwave oven, the front surface portion 12 and the back surface portion 13 bulge outward due to an increase in internal pressure accompanying the generation of steam. This bulging output acts intensively as the peeling force of the protruding seal portion 22 protruding inward. First, the output seal portion 22 peels, and when this peeling reaches the tip of the notch 21, When the release of the vapor is started and the internal pressure is further increased, the peelable seal part around the notch 21 is peeled off to prevent an excessive increase in the internal pressure. That is, in the standing pouch 2 of this example, the notch 21, the easily peelable seal portion that is the protruding seal portion 22, and the easily peelable seal portion around the notch 21 constitute a steam vent portion.

  As shown in FIGS. 1 and 2, the front plate 6 and the back plate 7 of the paper case 1 are folded from the bottom plate 3 via the folding lines 4 and 5, respectively, and are placed on the bottom plate 3 of the paper case 1. The standing pouch 2 is sandwiched from the front and rear. Further, a connecting piece 11 is folded and bonded to the front plate 6 side via a folding line 10 at the tip of the back plate 7 and the tips of the front plate 6 and the back plate 7 are joined to each other. .

  On the other hand, as shown in FIGS. 2 and 6, the bottom plate 6 of the paper case 1 is mountain-folded upward via a mountain fold line 8, and this mountain-folded bottom plate 6 is the bottom of the standing pouch 2. Is inserted into the recess. Accordingly, as shown in FIG. 2, the bottom portion 14 of the standing pouch 2 is pushed up by the top portion of the inserted bottom plate 6 and is suppressed from being pushed down by the weight of the contents. Is suppressed so that it does not spread greatly. For this reason, as shown in FIG. 2 and FIG. 7, this microwave oven packaging body has a substantially triangular shape with a short side surface and a small depth. On the other hand, since the side surface shape of the package for heating a microwave oven is short, the bottom is substantially triangular, so that it can be self-supporting and can be displayed as it is.

  When heating the microwave oven heating package with a microwave oven, the bottom plate 3 of the paper case 1 inserted in the recess of the bottom of the standing pouch 2 is pulled out and flattened, and the side shape is substantially triangular with a sufficiently long bottom. It can be heated up stably by putting it in a microwave oven after making it into a shape. However, even if it is put in the microwave oven as it is, as shown in FIG. 8, the front plate 6, the back plate 7 and the bottom plate 3 of the paper case 1 are pushed outward by the expansion of the standing pouch 2 with heating, and the bottom Since the face plate 3 comes out of the recess at the bottom of the standing pouch 2 and spreads flatly, the face plate 3 naturally becomes a self-supporting state and can be made difficult to fall down.

  Next, based on FIGS. 9-11, the microwave oven packaging body which concerns on the 2nd example of this invention is demonstrated.

  FIG. 9 is a development view of a paper case used for the microwave oven packaging according to the second example of the present invention, and FIG. 8 is a perspective view in the middle of the assembly of the microwave oven packaging according to the second example of the present invention. FIGS. 7 and 7 are perspective views after the assembly of the microwave oven heating package according to the second example of the present invention is completed. In addition, in FIGS. 9-11, the same code | symbol as FIGS. 1-8 shows the same member or site | part.

  As shown in FIG. 9, the paper case 1 of this example is basically the same as the paper case 1 of the first example, but differs in the following two points.

  First, as shown in FIG. 9, the holding pieces 24 are connected to the left and right ends of the back plate 7 via the folding lines 23, respectively. As shown in FIGS. 10 and 11, the holding piece 24 is folded inward via a folding line 23 to hold the side portion of the standing pouch 2 so that the standing pouch 2 is opened. It is for preventing it from falling off from the side part. Further, when the holding piece 24 covers the steam vent portion of the standing pouch 2, a portion corresponding to the steam vent portion can be cut out.

  Second, as shown in FIG. 9, both the folding lines 4, 5 are connected to the folding lines 4, 5 at both ends from the folding lines 4, 5 between the front plate 6 and the back plate 7 and the bottom plate 3. The convex cut | notch 25 which touches is formed. As shown in FIG. 10 and FIG. 11, the notch 25 is for projecting the inside of the notch 25 downward as the front plate 6 and the back plate 7 are folded to form the leg portion 26. is there. As illustrated in FIG. 8, the heating package for the microwave oven can expand the bottom plate 3 with heating by the microwave oven. At this time, the lower edge of the front plate 6 and the back plate 7 is the ionization range. It spreads while rubbing against the inner mounting surface. The leg part 26 is for reducing the frictional resistance with the mounting surface in the microwave oven, and making the lower edge of the front plate 6 and the rear plate 7 easily spread.

  Based on FIG. 12 and FIG. 13, the packaging body for microwave oven heating which concerns on the 3rd example of this invention is demonstrated.

  FIG. 12 is a development view of a paper case used for the microwave oven packaging according to the third example of the present invention, and FIG. 13 is a perspective view in the middle of the assembly of the microwave oven packaging according to the third example of the present invention. FIG. 12 and 13, the same reference numerals as those in FIGS. 1 to 8 denote the same members or parts.

  As shown in FIG. 12, the paper case 1 of this example is basically the same as the paper case 1 of the second example, but the center part in the left-right direction of the bottom plate 3 is cut out and a cut-out part 27 is formed. Is different. If the cutout portion 27 is provided, as shown in FIG. 13, the bottom plate 3 that is folded upward and inserted into the recessed portion of the bottom of the standing pouch 2 can be divided into two left and right portions. It becomes easy for the bottom plate 3 to come out of the recess. For this reason, as explained in FIG. 8 in particular, when the bottom plate 3 is widened by heating with a microwave oven, the bottom plate 3 is easily spread smoothly.

  Based on FIG. 14, the microwave oven packaging body according to the fourth example of the present invention will be described.

  FIG. 14 is a perspective view of a microwave heating packaging according to a fourth example of the present invention. In FIG. 14, the same reference numerals as those in FIGS. 1 to 8 denote the same members or parts.

  As shown in FIG. 14, the microwave oven heating package of the present example is basically the same as the first example described above, but the opening line 9 and the connecting piece 11 (FIG. 3) in the first example. The front plate 6 and the back plate 7 are slightly shorter. And the front-end | tip board 6 and the front-end | tip part of the backplate 7 are not joined directly, but are joined to the upper part of the standing pouch 2 by the seal | sticker 28, respectively. Even if it does in this way, the above-mentioned compact packaging form is obtained, and not only can the baseplate 3 be automatically expanded with the heating by the microwave oven, but also the packaging can be simplified.

It is a front view of the packaging body for microwave oven heating which concerns on the 1st example of this invention. It is AA in FIG. It is an expanded view of a paper case. It is a disassembled perspective view before sealing an edge which shows an example of the standing pouch for microwave oven heating. FIG. 5 is a plan view showing a state in which an edge portion of the standing pouch in an exploded state shown in FIG. 4 is sealed and a bottom portion is slightly widened. It is a perspective view in the middle of an assembly of the packaging for microwave oven heating concerning the 1st example of the present invention. It is a perspective view after the completion of the assembly of the microwave oven packaging body according to the first example of the present invention. It is sectional drawing corresponding to the AA part of FIG. 1 in the state which the standing pouch expanded by microwave oven heating. It is an expanded view of the paper case used for the microwave oven packaging body which concerns on the 2nd example of this invention. It is a perspective view in the middle of an assembly of the packaging body for microwave oven heating which concerns on the 2nd example of this invention. It is a perspective view after the completion of the assembly of the microwave oven packaging body according to the second example of the present invention. It is an expanded view of the paper case used for the microwave oven packaging body which concerns on the 3rd example of this invention. It is a perspective view in the middle of an assembly of the packaging body for microwave oven heating which concerns on the 3rd example of this invention. It is a perspective view of the microwave oven packaging body which concerns on the 4th example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Paper case 2 Standing pouch 3 Bottom board 4 Folding line 5 Folding line 6 Front board 7 Back board 8 Mountain fold line 9 Unsealing line 10 Folding line 11 Connection piece 12 Front part 13 Back part 14 Bottom part 15 Easy peelable film 16 Side edge seal portion 17 Side edge seal portion 18 Bottom edge seal portion 19 Bottom edge seal portion 20 Upper edge seal portion 21 Notch 22 Protruding seal portion 23 Folding line 24 Holding piece 25 Notch 26 Leg portion 27 Cutout portion 28 Seal

Claims (5)

A standing pouch for heating a microwave oven is provided on the bottom plate of a paper case with a front plate and a back plate connected before and after the bottom plate. The front plate and the back plate are folded from the bottom plate to sandwich the standing pouch, and the tip portions are joined to each other or each tip portion is joined to the top of the standing pouch, while the bottom plate However, the packaging for heating a microwave oven is characterized in that it is folded in a mountain at the center in the front-rear direction and inserted into a recess in the bottom of the standing pouch.   2. The microwave oven packaging body according to claim 1, wherein holding pieces which are folded inward and hold the side portions of the standing pouch are connected to the left and right of the front plate or the back plate.   The left and right sides of the bottom plate in the unfolded shape are cut into a V shape with the intersection with the upward mountain fold line as the apex, and the front and rear surfaces with the top of the mountain folded bottom plate as a boundary are trapezoidal. The package for heating a microwave oven according to claim 1 or 2, wherein the package is for heating with a microwave oven.   Convex cuts are formed in the bottom plate from the folding lines between the front plate and the back plate and the bottom plate, with both ends in contact with the folding line. The package for heating a microwave oven according to any one of claims 1 to 3, wherein a leg portion is formed by projecting downward along with the folding of the face plate.   The package for heating a microwave oven according to any one of claims 1 to 4, wherein a central portion in the left-right direction of the bottom portion is cut out.

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