JP5494948B2 - Packaging for microwave oven - Google Patents

Description

  The present invention relates to a package for a microwave oven having a structure in which a packaging bag such as a pouch that is formed with a steam vent and can be heated in a microwave oven is housed in a box.

  2. Description of the Related Art Conventionally, there has been proposed a microwave packaging body having a structure in which a food pouch (packaging bag) that is provided with a steam vent and can be heated in a microwave oven is housed in a cosmetic box (box). (See Patent Document 1). An opening part that can be opened by expansion of the pouch when heated is formed in the cosmetic box of the packaging for microwave oven, and the pouch is stored in the cosmetic box so that a steam venting part faces the opening part.

  According to such a package for a microwave oven, the cosmetic box containing the pouch is set in the microwave oven with the surface on which the opening portion is formed facing upward, and the pouch is expanded by the heating operation of the microwave oven. Then, since the opening part of the cosmetic box is automatically opened by the expansion of the pouch, it can be heated in the microwave without taking out the pouch from the cosmetic box.

JP 2009-51562 A

  In such a conventional microwave oven package, it is important that the opening of the box is reliably opened by the expansion force of the packaging bag heated in the microwave oven. This invention is made | formed in view of such a situation, and provides the packaging body for microwave ovens which can open a box body more reliably by expansion | swelling of a packaging bag.

A microwave oven package according to the present invention has a front surface and a back surface facing each other, and a side surface connected to an edge of the front surface and the back surface. And a packaging bag housed in the box so that the steam venting portion faces the opening portion, and the expansion due to an increase in the internal pressure of the packaging bag during heating by a microwave oven A microwave oven package in which an unsealed portion formed in a box is opened, wherein the incision is linearly cut into at least one of two portions facing each other across the unsealed portion on the side of the box A portion is formed, and the cut portion is configured to extend in parallel to the edges of the front surface and the back surface .

  With such a configuration, when the microwave packaging body is heated by the microwave oven, the packaging bag expands and pushes up the opening portion provided on the front surface of the box body, so that the opening portion gradually rises and the box is accordingly Parts and sides other than the unsealed part on the front of the body are deformed. At least one of the two portions facing each other across the opening portion on the side surface is easily deformed due to the influence of the cut portion, whereby the force applied to the back surface via the side surface is alleviated and the back surface Excessive deformation is prevented, and the vicinity of the opening portion on the front side is deformed relatively greatly, so that the opening portion can be opened more smoothly.

And when the opening part formed in the front surface rises, two parts which oppose on both sides of the said opening part of a side face will come to deform | transform under the influence which a notch part spreads similarly. The cut portion may be formed at a substantially center between the front-side edge and the back-side edge of the side surface.

  Furthermore, in the microwave oven packaging body according to the present invention, the box has a rectangular shape on the front surface and the back surface, and a first side surface and a second side surface facing each other, and a third side surface facing each other. And a rectangular parallelepiped shape having four side surfaces of the fourth side surface, the opening portion is a structure that opens from the boundary with the non-opening portion toward the first side surface, and the cut portion is the third side surface. And it can be set as the structure formed in each of the part which opposes on both sides of the said opening part of a 4th side surface.

  With such a configuration, the two portions facing each other across the opening portion on the third side surface and the fourth side surface are also easily deformed by the influence of the cut portion, and the opening portion formed on the front surface When the opening part rises, the opening part is relatively greatly affected by the same deformation of both parts sandwiching it, so that the vicinity of the opening part on the front side is relatively greatly deformed, and the opening part opens more smoothly. In addition, it is possible to prevent uneven opening of the opening portion.

  Further, in the microwave oven package according to the present invention, the boundary between the unsealed portion of the unsealed portion continues from the front surface to the third side surface and the fourth side surface, respectively, and the third side surface and the fourth side surface respectively. Extending so as to reach a corner where the first side surface and the back surface intersect, and the cut portion is in the vicinity of the boundary line of each of the third side surface and the fourth side surface, and It can be set as the structure formed in the part on the opposite side to 1 side.

  With such a configuration, when the opening portion is opened from the boundary line with the non-opening portion toward the first side surface, the portion formed from the surface of the boundary line to the third side surface and the fourth side surface from the surface. As a result, the box is further opened and the packaging bag expanded by heating can be easily exposed. In addition, the incision part may affect the opening formed from the surface of the boundary line following the third side surface and from the surface formed from the surface following the fourth side surface. Become.

  Furthermore, the microwave oven package according to the present invention may be configured such that the cut portion is formed by a plurality of cut lines that are linearly connected.

  With such a configuration, when the opening portion formed on the front surface rises, the two portions facing each other across the opening portion on the side surface are deformed under the same influence by a plurality of straight cut lines. To come.

  According to the microwave packaging body of the present invention, at least one of the two portions facing each other across the opening portion on the side surface is easily deformed by the influence of the cut portion, and the front surface is expanded by the expansion of the packaging bag. When the unsealed portion formed on the surface is raised, the force applied to the back surface via the side surface is alleviated to prevent excessive deformation of the back surface, and the vicinity of the unsealed portion on the front side is relatively largely deformed, Since the part can be opened more smoothly, the box can be opened more reliably by the expansion of the packaging bag.

It is a perspective view which shows the external appearance of the package for microwave ovens concerning the 1st Embodiment of this invention. It is an expanded view of the box used for the packaging body for microwave ovens shown in FIG. It is the elements on larger scale which show the detailed structure of the opening part formed in the box. It is sectional drawing which shows the state which the pouch (packaging bag) accommodated in the box body is expanding. It is a perspective view which shows the state which the pouch accommodated in the box body expanded. It is a perspective view which shows the state which the opening part of the box front surface was open | released and the pouch was exposed when it heated with the microwave oven.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The microwave oven package according to the embodiment of the present invention is configured as shown in FIGS. 1 and 2. In addition, FIG. 1 is a perspective view which shows the external appearance of the package for microwave ovens, and FIG. 2 is an expanded view of the box used for the package for microwave ovens.

In FIG. 1, a box (decorative box) 10 used for the microwave packaging is made of paper (for example, coated cardboard 310 g / m ² or the like), and has a rectangular front surface 11 facing each other and It is formed of a back surface 12 and four side surfaces including an upper side surface 13a, a lateral side surface 13b, a lower side surface 13c, and a lateral side surface 13d that are connected to the edges of the front surface 11 and the back surface 12. Although not shown in FIG. 1, a so-called flat bag type microwave pouch 20 (packaging bag) formed of a plastic sheet and filled with contents such as food is provided in the box 10. (See FIGS. 4A and 5 described later).

  The box 10 is assembled from the developed paper shown in FIG. The developed paper includes a rectangular (rectangular) front surface 11 and a rear surface 12, a strip-shaped upper side surface 13a, one lateral side surface 13b, a lower side surface 13c, the other lateral side surface 13d, and an adhesive margin (glue surface) 14aa, 14ab, 14ac, 14b, 14ca, 14cb, 14cc. As shown in FIG. 1, the spread paper is folded and adhered, and as shown in FIG. 1, the front surface 11 and the back surface 12 that face each other, the upper side surface 13 a (first side surface), the lower side surface 13 c (second side surface) that face each other, and A box 10 having a flat rectangular parallelepiped shape is formed by the four side surfaces of the two lateral side surfaces 13b (third side surface) and 13d (fourth side surface) facing each other. Specifically, the adhesive margins 14ab and 14ac are adhered to the back side of the upper side surface 13a, and the adhesive margins 14cb and 14cc are adhered to the rear side of the lower side surface 13c, whereby the upper side surface 13a and the lower side surface 13c continuous to the edge of the front surface 11 are obtained. And the two lateral surfaces 13b and 13d are joined. Also, by bonding the adhesive margins 14aa and 14ca to the back side of the upper side surface 13a and the lower side surface 13c, the back surface 12 is joined to the upper side surface 13a and the lower side surface 13c, and further, the paste protrudes from the long side edge of the lateral side surface 13b. By bonding the margin 14b to the back side of the back surface 12, the back surface 12 is joined to the lateral side surface 13b. Note that the adhesive margin 14b may be formed so as to protrude from the long edge of the back surface 12 and bonded to the back surface of the lateral side surface 13b.

  Moreover, referring to FIG. 2 together with FIG. 1, an openable opening 15 is formed from the front surface 11 of the box body 10 to both lateral side surfaces 13 b and 13 d. A cut line string in which cut lines are connected is formed at a boundary 16 between the unsealed part 15 and the unopened part of the unsealed part 15. Open in the direction of the upper side surface 13a. A boundary 16 between the unsealed portion and the unsealed portion of the unsealed portion 15 has a substantially V shape that opens to the upper side surface 13 a side on the front surface 11. Then, one end portion of the boundary 16 is formed on one lateral side surface 13b continuously from the front surface 11 side to reach a corner where the lateral side surface 13b, the upper side surface 13a, and the back surface 12 intersect, and the other end of the boundary 16 The portion is formed on the other lateral side surface 13d continuously from the front surface 11 side and reaches the corner where the lateral side surface 13d, the upper side surface 13a, and the back surface 12 intersect.

  Referring to FIG. 3 together with FIG. 1, two cut lines 17 a and 17 b extending in the longitudinal direction are formed in the central portion between the edge of the front surface 11 and the edge of the back surface 12 of one lateral side surface 13 b of the box body 10. Are formed in a straight line. In addition, two cut lines 17c and 17d extending in the longitudinal direction are formed in a straight line at the central portion between the edge of the other lateral side surface 13d of the box 10 with the front surface 11 and the edge of the back surface 12. ing. The two cut lines 17a and 17b formed on the lateral side surface 13b and the two cut lines 17c and 17d formed on the lateral side surface 13d include the opening 15 formed from the front surface 11 to the lateral side surfaces 13b and 13d. It is arranged in the vicinity of the boundary 16 of the unsealing part 15 and on the opposite side of the upper side surface 13a with respect to the boundary 16 so as to sandwich the pinch.

As shown in FIG. 3, in the cut line array formed at the boundary 16 between the unsealed portion 15 and the unopened portion 15, the immediately preceding cut lines S _cut1 , S cut from the front surface 11 to the respective lateral side surfaces 13b, 13d. _cut2 is formed so that the inclination angle is larger than that of the other cut lines. By forming the cut line row in this way, it is possible to prevent the strength of the crease at the boundary between the front surface 11 and each of the lateral side surfaces 13b and 13d from being excessively lowered. Further, the tearing from the front surface 11 to the lateral side surfaces 13b and 13d of the incision line row can proceed smoothly.

  As shown in FIGS. 4A, 4B, and 5, the flat bag type pouch 20 housed in the box 10 is formed with steam vents 21a, 21b, and 21c arranged along the edge. Each of the steam vents 21a, 21b, and 21c has a structure in which the periphery of the hole (weakening part) is sealed as described in, for example, Japanese Patent Application Laid-Open No. 2002-249176, and the internal pressure of the pouch 20 is limited. If it exceeds, steam will be ejected from the steam vents 21a, 21b, 21c (holes). The structure of the steam vents 21a, 21b, and 21c is not limited to the above-described structure, and a predetermined portion of the edge seal part of the pouch 20 is narrowed and protruded inward, with an easily peelable film interposed therebetween. When the internal pressure of the pouch 10 is increased, such as sealing, the seal of the predetermined part is peeled off preferentially, and a heating element that generates heat by microwave irradiation is attached to a film material (sheet), A known material such as one in which the film material is melted or the seal strength is reduced to allow vapor to escape can be applied.

  The pouch 20 is housed in the box 10 so that the steam vents 21a, 21b, and 21c are opposed to the opening 15 formed on the front surface. Further, the pouch 20 is formed with a folded portion 22 that protrudes toward the back surface 12 due to an increase in internal pressure at a portion corresponding to the opening portion 15. The folded portion 22 protrudes when the pouch 20 expands, and the detailed structure thereof is described in Japanese Patent Application Laid-Open No. 2006-62672.

  When the contents of the pouch 20 stored in the box 10 are heated in a microwave oven in this way, the box 10 in which the pouch 20 is stored is set in the microwave oven with the front surface 11 facing upward, and the microwave oven Start up. When the contents in the pouch 20 are heated by the microwave oven to generate water vapor, the internal pressure of the pouch 20 is increased by the water vapor, and the pouch 20 is expanded as shown in FIGS. 4A and 4B. The front surface 11 of the box body 10 is pushed outward by the expanding pouch 20, and in particular, when the folded portion 22 of the pouch 20 is expanded, the opening portion 15 of the front surface 11 gradually rises. And with the rising of the opening part 15, the non-opening part other than the opening part 15 and the side surfaces 13b and 13d are also deformed.

  As the unsealed portion 15 rises, the portion of the cut line array formed at the boundary 16 with the unopened portion is cut off, and further expansion of the pouch 20 causes the lateral side surfaces 13b, from the front surface 11, as shown in FIG. The unsealed portion 15 extending to 13d is opened from the boundary 16 toward the upper side surface 13a. And the part in which the steam vent parts 21a, 21b, and 21c of the pouch 20 were formed is exposed from the opening part 18 formed by opening the opening part 15. In this state, when the internal pressure of the pouch 20 exceeds the limit, steam is ejected from the steam vents 21a, 21b, and 21c, and the content of the pouch 20 is cooked without excessively increasing the internal pressure of the pouch 20. .

  The operation of opening the unsealing portion 15 due to the expansion of the pouch 20 will be described in more detail.

  The opening part 15 came to be opened more reliably by the influence of the cut lines 17a, 17b, 17c, 17d formed in the part sandwiching the opening part 15 on both lateral side surfaces 13a, 13d of the box body 10. This is considered because the opening part 15 is open | released as follows.

  Since the two portions facing each other across the opening 15 of the lateral side surfaces 13b and 13d of the box 10 are easily affected by the cut lines 17a, 17b, 17c and 17d, the opening 15 is gradually formed. In the process where the portion other than the unsealed portion of the front surface 11 of the box body 10 and both lateral side surfaces 13b and 13d are deformed along with this, the force applied to the back surface 12 through the lateral side surfaces 13b and 13d is alleviated. While excessive deformation of the back surface 12 is prevented, the vicinity of the unsealed portion 15 of the unsealed portion 15 of the unsealed portion 15 of the unsealed portion 15 is more smoothly deformed due to relatively large deformation in the vicinity of the unsealed portion 15 on the front surface 11 side. Torn. Thereby, the opening part 15 comes to be able to open | release more reliably from the boundary 16 with a non-boundary part. In addition, by the cut lines 17a, 17b, 17c, 17d formed on the lateral side surfaces 13b, 13d, the unsealed portion 15 is subjected to a relatively large deformation similar to the portions of the lateral side surfaces 13b, 13d sandwiching it. Uneven opening of the opening 15 is prevented. For example, even when one lateral side surface 13b is reinforced by the glue margin 14b bonded to the back surface 12, the portion sandwiching the opening 15 between the lateral side surface 13b and the other lateral side surface 13d is cut line 17a, Since it is positively deformed in the same way by 17b, 17c, and 17d, the opening 15 can be reliably opened from the boundary 16 toward the upper side surface 13a without being biased.

  As described above, according to the microwave oven packaging body according to the embodiment of the present invention, the pouch 20 is expanded from the front surface 11 of the box body 10 to the lateral side surfaces 13b and 13d by heating with the microwave oven. The opened opening 15 is raised and can be more reliably opened from the boundary 16 with the unopened portion. Further, when the opening portion 15 is opened from the boundary 16 with the non-opening portion toward the upper side surface 13a, a portion formed from the front surface 11 of the boundary line 16 following the one lateral side surface 13b and the other side from the front surface 11 Since the portion formed following the lateral side surface 13d is also released, the box 10 is opened more greatly, and the pouch 20 expanded by heating can be easily exposed.

  In the above-described embodiment, two cut lines 17a, 17b, 17c, and 17d are formed on both lateral side surfaces 13b and 13d. A cut line may be formed on either one of the lateral side surfaces 13b and 13d. Moreover, the cut line formed in each lateral side surface 13b, 13d is not limited to a straight line parallel to the front surface 11 and the back surface 12, and may be a waveform or an inclined shape. Further, in the above-described embodiment, each score line is formed so as to be within the range from the upper side surface 13a side to the lower side surface 13c side to the top portion of the opening portion 15, but the top portion of the opening portion 15 is It may extend to a position beyond the limit.

  The shape of the front surface 11 of the unsealed portion 15 in the box 10 is a mountain shape (substantially V-shaped), but may be other shapes such as an inverted triangle or a trapezoid. Moreover, it describes in 2009-51562 gazette instead of the opening part 15 which becomes openable by forming the cut line row | line | column in the boundary line 16 from the front surface 11 of the box 10 to both lateral side surface 13b, 13d. Thus, it is also possible to provide a lid that covers the opening formed on the front surface 11 of the box 10 as an opening portion. In this case, the edge of the lid body becomes the boundary with the unopened portion. Furthermore, a pouch provided with a steam vent at the branching portion can be applied in the same manner as that described in JP-A-2009-051562.

  As described above, the microwave oven packaging body according to the present invention has an effect that the box body can be opened more reliably by expansion of the packaging bag, and a steam vent is formed in the microwave oven. It is useful as a packaging for microwave ovens having a structure in which a packaging bag such as a pouch that can be heated is stored in a box.

10 box body 11 front surface 12 back surface 13a upper side surface (first side surface)
13b Lateral side (third side)
13c Lower side (second side)
13d lateral side (fourth side)
15 opening part 16 boundary 17a, 17b, 17c, 17d cutting line (cutting part)
18 Opening 14aa, 14ab, 14ac Paste 14b Paste 14ca, 14cb, 14cc Paste 20 Pouch (packaging bag)
21a, 21b, 21c Vapor vent part 22 Folding part

Claims (5)

A box body having a front surface and a back surface facing each other and a side surface connected to an edge of the front surface and the back surface, an opening portion provided on the front surface is provided, and a steam vent portion is formed. A packaging bag housed in the box so as to face the opening portion, and the opening portion formed in the box body is opened by expansion accompanying an increase in internal pressure of the packaging bag during heating by a microwave oven. A packaging for a microwave oven,
A cut portion that is cut linearly is formed in at least one of the two portions facing each other across the opening portion on the side surface of the box ,
The said cut | notch part is a package for microwave ovens formed so that it might extend in parallel with the edge of each of the said front surface and back surface . The incisions are microwave package of claim 1 Symbol mounting is formed substantially in the center between the front side edge and the edge of the back side of the side surface. The box has a rectangular parallelepiped shape in which the front surface and the back surface are rectangular, and has four side surfaces, a first side surface and a second side surface facing each other, and a third side surface and a fourth side surface facing each other. And
The opening portion is a structure that opens from the boundary with the non-opening portion to the first side surface,
The package for a microwave oven according to claim 1 or 2 , wherein the cut portion is formed in each of the portions facing each other across the opening portion of the third side surface and the fourth side surface. The boundary between the unsealed portion and the unopened portion continues from the front surface to the third side surface and the fourth side surface, and the corner portion where each of the third side surface and the fourth side surface intersects with the first side surface and the back surface. Extending to
The microwave oven package according to claim 3 , wherein the cut portion is formed in a portion of the third side surface and the fourth side surface in the vicinity of the boundary and on the opposite side of the boundary from the first side surface. .   The microwave oven package according to any one of claims 1 to 4, wherein the cut portion is formed by a plurality of cut lines that are continuous in a straight line.

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