JP7158130B2 - Package for microwave heating - Google Patents

Description

TECHNICAL FIELD The present invention relates to a microwave oven heating package having a chuck member.

A conventional package for microwave heating is disclosed in Patent Document 1. This package for microwave heating has a bag body and a chuck member. The bag body is hermetically sealed by stacking resin sheets and sealing the periphery with a sealing portion, and has a front portion and a back portion facing each other. The chuck member is disposed on the inner surface of the upper portion of the front portion and the rear portion, and a storage portion for storing contents such as cooking sauce is formed below the chuck member. In addition, cut lines extending in the left-right direction are formed on the outer surfaces of the front and back portions between the upper edge of the bag body and the chuck member.

The chuck member has a male portion protruding from a first band-shaped base portion fixed to the rear portion, and a female portion protruding from a second band-shaped base portion fixed to the front portion and engaged with the male portion. . A part of the chuck member is provided with a vaporization section. The vaporized portion is formed by crushing the male portion and the female portion under predetermined pressure, predetermined time, and predetermined temperature conditions. In the steaming section, the crushed male and female sections do not interlock.

Further, an easy-to-peel seal portion having easy peelability is provided between the chuck member and the storage portion. The easy-to-open seal part seals the front part and the back part to seal the upper part of the storage part. Thereby, it is possible to prevent the contents in the storage section from leaking out from the vaporization section.

In the microwave oven heating package having the above structure, the user breaks the front and back parts along the perforation line, grasps the upper ends of the front and back parts, and pulls them away from each other. As a result, the interlocking state of the male part and the female part is released, and the front part and the back part are separated from each other at the easy-open seal part. As a result, the upper portion of the storage portion is opened and the bag body is unsealed.

A user puts foodstuffs and the like from the upper part of the container, closes the chuck member, and heats the microwave heating package in the microwave oven. As a result, the ingredients can be put into the cooking sauce and cooked. At this time, the steam generated inside the housing due to heating is exhausted through the vaporization section. Therefore, it is possible to prevent the contents from scattering due to bursting of the bag body due to an increase in internal pressure.

Japanese Patent Application Laid-Open No. 2016-20239 (pages 5, 6, FIGS. 1 to 4)

However, according to the conventional package for heating in a microwave oven, the steaming portion is formed by crushing the male portion and the female portion under a predetermined pressure, a predetermined time, and a predetermined temperature condition. There was a problem that the number of man-hours for manufacturing the heating package increased. In addition, depending on the conditions for forming the vaporization part, the male part and the female part may not be sufficiently crushed and the male part and the female part may be engaged, or the male part and the female part may be fused to cause poor vaporization. may occur. Therefore, there is a problem that the yield of the package for microwave heating is lowered.

In addition, there is also a problem that the content leaks out from the steaming portion due to the release of the interlocking state of the chuck member due to the increase in the internal pressure in the bag body.

SUMMARY OF THE INVENTION An object of the present invention is to provide a package for heating in a microwave oven that can reduce man-hours, improve yield, and prevent contents from leaking out.

In order to achieve the above object, the present invention comprises a bag body whose peripheral edge is sealed by a sealing portion, and a chuck member disposed on the inner surface of the upper portion of the bag body, and a content stored in a storage portion below the chuck member. In a microwave oven heating package for storing an object, the chuck member is adhered to the opposite side of the bag body, and the male part protruding from the strip-shaped first base adhered to the opposite side of the bag body. a female part protruding from the band-shaped second base part and engaged with the male part; and a sealing portion that seals the storage portion, and the other part of the first base portion and the second base portion is provided with a vapor passage portion that is not adhered to the bag body. and

According to this configuration, the male part and the female part are disengaged from each other, and the sealing part is peeled off to open the bag body. After the foodstuffs and the like are stored in the storage part, the male part and the female part are engaged with each other, and the food is cooked with a microwave oven. When the internal pressure of the bag body rises due to heating, steam is discharged from the vaporizing portion between the bag body and the chuck member while the male and female portions of the chuck member are engaged.

Further, according to the present invention, in the package for heating in a microwave oven configured as described above, it is preferable that the vaporizing portion is arranged at a side end portion of the chuck member.

Further, according to the present invention, in the package for heating in a microwave oven configured as described above, it is preferable that the vaporizing portion is formed only at one location.

Further, according to the present invention, in the package for heating in a microwave oven configured as described above, it is preferable that the width of the vaporizing portion is 15 mm or more and 40 mm or less in the extending direction of the chuck member.

Further, according to the present invention, in the package for heating in a microwave oven configured as described above, it is preferable that the seal portion is arranged at the bottom portion of the bag body facing the chuck member.

Further, according to the present invention, in the package for heating in a microwave oven configured as described above, it is preferable that the sealing portion on one side of the bag body has a pair of protrusions arranged vertically so as to protrude toward the storage portion.

Further, according to the present invention, in the package for heating in a microwave oven having the above structure, the bag body has a bottom sheet folded in two and sandwiched between the lower parts of the front and back parts facing each other. It is preferable if a bottom surface is formed.

In order to achieve the above object, the present invention provides a bag body having a peripheral edge sealed by a sealing portion and having an unsealed portion on one side where the sealing portion is not formed; A packaging material for heating in a microwave oven, which includes a chuck member disposed thereon and a content storage portion below the chuck member, wherein the chuck member is attached to a belt-shaped first base adhered to one facing surface of the bag body. a protruding male portion; a female portion protruding from a strip-shaped second base adhered to the other opposite surface of the bag body and engaged with the male portion; and one of the first base and the second base. and a sealing portion that extends downward from the lower end of the bag body and adheres to the inner surface of the bag body so as to be easily peelable to seal the storage portion, and the other part of the first base portion and the second base portion is It is characterized in that an unbonded vaporizing portion is provided on the bag body, and the sealing portion has a pair of projecting portions adjacent to both sides of the unsealed portion and projecting toward the storage portion.

Further, according to the present invention, in the packaging material for heating in a microwave oven having the above structure, the bag body has a bottom sheet folded in two and sandwiched between the lower parts of the front and back parts facing each other. It is preferable if a bottom surface is formed.

According to the present invention, by forming the vaporization part by unbonding the first base part or the second base part and the bag body, the vaporization part for discharging steam during heating can be easily formed. As a result, it is possible to reduce the man-hours of the package for microwave heating and improve the yield. In addition, since the male and female parts are engaged on the vaporization part, the chuck member is prevented from being released, and the contents can be prevented from leaking out.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the exterior box which accommodated the package for microwave oven heating which concerns on 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the state which opened the exterior box which accommodated the package for microwave oven heating which concerns on 1st Embodiment of this invention. A plan view showing a state before opening the microwave oven heating package according to the first embodiment of the present invention. AA sectional view of FIG. BB sectional view of FIG. A plan view showing a state before content filling of the microwave oven heating package according to the first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the state which set the package for microwave oven heating which concerns on 1st Embodiment of this invention in the exterior box. FIG. 2 is a side cross-sectional view passing through a steaming portion during heating of the package for heating in a microwave oven according to the first embodiment of the present invention. FIG. 3 is a side cross-sectional view passing through a steaming part of a microwave oven heating package according to a second embodiment of the present invention. A plan view showing a state before opening a microwave oven heating package according to a third embodiment of the present invention. The top view of the packaging material for microwave oven heating which concerns on 3rd Embodiment of this invention. The top view of the packaging material for microwave oven heating which concerns on 4th Embodiment of this invention.

<First embodiment>
A first embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are perspective views of an exterior box 100 containing a microwave oven heating package 1 according to the first embodiment, and FIG. 2 shows the state of the exterior box 100 after being opened.

An exterior box 100 for containing a microwave oven heating package 1 (hereinafter abbreviated as package 1) has a rectangular parallelepiped shape and is formed by folding a paper substrate. The exterior box 100 is composed of a top panel 101 and a bottom panel (not shown) facing each other, a pair of side panels 102, a front panel 103 and a rear panel (not shown) facing each other.

A hinge line 110 extending in a direction facing the side plate 102 is provided on the rear plate side of the top plate 101 . The hinge line 110 is formed in a wavy shape by arranging a plurality of curved cuts in parallel.

Perforated opening lines 111 a and 111 b extend across the top panel 101 and the front panel 103 . The opening lines 111a and 111b extend from both ends of the hinge line 110 along the boundary between the top plate 101 and the side plates 102 toward the front plate 103 side. At this time, the opening lines 111a and 111b obliquely cross the corners of the top panel 101 on the front panel 103 side.

In addition, the opening lines 111a and 111b extend from the upper edge of the front plate 103 while changing the angle toward each other, and finally extend parallel to the lower edge of the front plate 103. As shown in FIG.

Thereby, a grip portion 112 is formed at the lower edge of the front plate 103 between the opening lines 111a and 111b. By gripping and pulling up the grip portion 112, the opening lines 111a and 111b are broken. Then, the lid portion 120 (the inner portion of the opening lines 111a and 111b) is rotated upward about the hinge line 110 as an axis. As a result, the top plate 121 is opened and the package 1 can be taken out.

FIG. 3 is a plan view of the microwave oven heating package 1 before opening. 4 and 5 are cross-sectional views taken along line A--A and line B--B in FIG. 3, and FIG.

As shown in FIG. 3, the package 1 has a bag body 2 and a chuck member 3. As shown in FIG. The chuck member 3 is made of resin and arranged on the upper inner surface of the bag body 2 .

The bag main body 2 has a front portion 22 and a rear portion 23 facing each other, with resin sheets 40 stacked on top of each other and the peripheral edge thereof sealed (thermally bonded) by a sealing portion 21 .

Below the chuck member 3 of the bag body 2, a storage section 4 for storing the content S (here, cooking sauce) is formed. A vapor passage portion 5 is provided at one side end portion of the chuck member 3 so as to allow the storage portion 4 and the upper portion of the chuck member 3 to communicate with each other. As will be described later, when the package 1 is heated by a microwave oven, the steam in the storage section 4 is exhausted to the outside of the package 1 through the vaporization section 5 .

V-shaped notch portions 29 are formed on the seal portions 21 on both side edges of the bag body 2 above the chuck member 3 . It should be noted that the front surface portion 22 and the rear surface portion 23 may be half-cut to provide cut lines that substantially connect the left and right notch portions 29 .

As shown in FIG. 4, the resin sheet 40 is formed by laminating a base material layer 41, an intermediate layer 42 and a sealant layer 43 sequentially from the outside to the inside of the bag body 2 by dry lamination. The resin sheets 40 may be laminated by co-extrusion.

The substrate layer 41 is formed of, for example, a biaxially stretched transparent vapor-deposited polyethylene terephthalate film having a thickness of about 12 μm. The intermediate layer 42 is formed, for example, by depositing silica or the like on a biaxially stretched nylon film having a thickness of about 15 μm, and prevents permeation of water vapor, oxygen, and the like. The sealant layer 43 is formed of, for example, a non-stretched polypropylene (CPP) film having a thickness of about 60 μm, and the opposing sealant layers 43 are sealed.

In addition, a printed layer (not shown) on which characters and patterns are printed is arranged on the surface of the base material layer 41 on the intermediate layer 42 side, and is visible from the appearance of the microwave oven heating package 1 . Incidentally, the printed layer is formed in a thickness of about 1 to 5 μm with ink placed at a predetermined position on the base material layer.

The chuck member 3 has a male portion 31 , a female portion 32 and a sealing portion 33 . The male portion 31 protrudes from a strip-shaped first base portion 35 adhered to the inner surface of the back portion 23 . The female part 32 projects from a belt-like second base part 36 adhered to the inner surface of the front part 22 and engages with the male part 31 .

The male portion 31 and the first base portion 35 are integrally molded, and the first base portion 35 is thermally bonded to the back portion 23 at the bonding regions HS above and below the male portion 31 .

The female portion 32 , the second base portion 36 and the sealing portion 33 are integrally molded, and the second base portion 36 is thermally bonded to the front surface portion 22 at bonding regions HS above and below the female portion 32 . The sealing portion 33 extends downward from the lower end of the second base portion 36 and is adhered to the rear surface portion 23 at the adhesion region HS so as to be easily peelable. The storage portion 4 is sealed by the sealing portion 33 .

On the other hand, as shown in FIG. 5, the second base portion 36 of the vapor passage portion 5 is thermally bonded to the front surface portion 22 at the bonding regions HS above and below the female portion 32, while the first base portion 35 is bonded to the male portion 31. The upper and lower portions are not adhered to the bag body 2 . In addition, the sealing portion 33 is adhered to the back surface portion 23 at the adhesion region HS, so that the contents S do not leak between the chuck member 3 and the sealing portion 21 through the vaporization portion 5 .

It is preferable that the width D of the vaporizing portion 5 is set to 15 mm or more and 40 mm or less in the extending direction of the chuck member 3 . If the width of the steam passage portion 5 is less than 15 mm, the discharge speed of the steam VP is slow with respect to the increase in internal pressure, and the package 1 may expand and burst. In addition, when the width of the steam passage portion 5 is larger than 40 mm, the discharge speed of the steam VP is high, and the storage portion 4 is difficult to expand. For this reason, water vapor stays in the storage part 4 and a space for steaming the contents S is not formed, so that the food for heat cooking cannot be steamed.

Furthermore, if the width of the steaming portion 5 is less than 10 mm, the first base portion 35 may not be adhered to the back surface portion 23 during bag making of the package 1, and poor steaming may occur. Also, if the width of the vaporizing portion 5 is greater than 45 mm, a portion of the second base portion 36 may not be adhered to the front portion 22 during bag making of the package 1, and the storage portion 4 may not be sealed. .

It is preferable that the package 1 accommodates the contents S in the bottom of the storage portion 4 and is folded several times between the storage portion 4 and the chuck member 3 to be stored in the exterior box 20 (see FIG. 1). As a result, pressure is not applied to the sealing portion 33 when the storage portion 4 is pressurized during transportation or the like, and peeling of the sealing portion 33 can be prevented.

FIG. 6 shows a plan view of the package 1 before the content S is filled. With the sealing portion 33 adhered and the chuck member 3 closed, the package body 1 is set in the filling machine with the bottom portion 2a of the bag body 2 facing upward while the bottom portion 2a of the bag body 2 is unsealed. After the content S is filled into the container 4 from above, the bottom 2a of the package 1 is sealed. As a result, the content S can be enclosed in the package 1 using existing equipment for injecting the content into a bag having an open top.

Next, a method of adding foodstuffs to the contents S filled in the package 1 and cooking them will be described. The user opens the package 1 by breaking the upper portion of the bag body 2 from the notch 29 of the package 1 taken out of the exterior box 100 . After that, the mating state of the male part 31 and the female part 32 is released, and the sealing part 33 is peeled off from the back part 23 to open the storage part 4 . In this state, food is stored in the storage portion 4, and the male portion 31 and the female portion 32 are engaged again.

FIG. 7 is a perspective view showing a state in which the package 1 is set in the exterior box 100 during heating. The package 1 containing food is placed in the exterior box 100 and heated. Specifically, the lid portion 120 of the exterior box 100 is folded backward via the hinge line 110 (see FIG. 2), and the vaporizing portion 5 is arranged upward, along the back surface of the lid portion 120. prop up.

In addition, the hinge line 110 is formed by a wave-like notch, which makes it easy to maintain the folded state of the lid portion 120 . Therefore, even when the package 1 containing the contents S and the added foodstuff is light in weight, the package 1 can be stably supported with the steaming part 5 facing upward.

When the packaging body 1 is placed in a microwave oven together with the exterior box 100 and heated, the added ingredients are cooked together with the contents S.

FIG. 8 shows a side cross-sectional view of the steaming portion 5 of the microwave heating package 1 during heating in the microwave oven. When steam VP is generated from the foodstuff and contents S by heating in the microwave oven, the internal pressure in the storage section 4 rises. At this time, while the male part 31 and the female part 32 of the chuck member 3 in the steaming part 5 are kept engaged, the steam VP flows between the unbonded first base part 35 and the rear part 23 to form the package 1. exhausted to the outside.

As a result, the opening of the chuck member 3 is suppressed, and the scattering of the contents S due to the opening of the entire chuck member 3 at once is prevented.

When the package 1 expands, the central portion of the chuck member 3 may be bent convexly toward the lid portion 120 side, but the side end portions of the chuck member 3 are less bent than the central portion. Therefore, by arranging the vaporizing portion 5 at the side end portion of the chuck member 3 , it is possible to prevent the first base portion 35 of the vaporizing portion 5 from being pressed against the back surface portion 23 to block the unbonded region. .

In addition, by using the outer box 100 as a support stand for propping the package 1, it is possible to prevent the inside of the microwave oven from being contaminated due to leakage of the contents S through the vaporization section 5. FIG.

After heating in the microwave oven, the user releases the engagement state of the male part 31 and the female part 32 again, and transfers the food cooked with the contents (cooking sauce) S to a plate or the like. Thereby, the user can eat the food cooked in the microwave oven.

By forming the steaming part 5 only at one place, the user can easily grasp the position of the steaming part 5 . As a result, when the package 1 is taken out after being heated in the microwave oven, the user can hold the package 1 while avoiding the vaporizing portion 5, thereby preventing the danger of burns.

According to this embodiment, the chuck member 3 comprises a male portion 31 , a female portion 32 and a sealing portion 33 . The male part 31 protrudes from a strip-shaped first base part 35 adhered to the rear surface part 23 of the bag body 2 on the opposite side. The female part 32 is protruded from a belt-like second base part 36 adhered to the front part 22 on the other opposite surface of the bag body 2 and engaged with the male part 31 . The sealing portion 33 extends downward from the lower end of the second base portion 36 and adheres to the inner surface of the back portion 23 of the bag body 2 so as to be easily peelable to seal the storage portion 4 . The chuck member 3 is provided with a vaporization portion 5 in which a portion of the first base portion 35 is not adhered to the bag body 2 .

By forming the vaporization portion 5 by not bonding the first base portion 35 and the back surface portion 23 of the bag body 2, the vaporization portion 5 that discharges the vapor to the outside due to the increase in internal pressure due to heating can be easily formed. can. As a result, it is possible to reduce the man-hours of the package for microwave heating and improve the yield.

Also, the steam VP in the storage portion 4 flows between the first base portion 35 and the bag body 2 and is exhausted to the outside of the package 1 . At this time, since the male part 31 and the female part 32 are engaged with each other on the vaporization part 5, the release of the chuck member 3 is prevented, and the leakage of the contents S can be prevented.

In addition, since the vaporization part 5 is arranged at the side end of the chuck member 3, the first base part 35 of the vaporization part 5 is pressed against the back surface part 23 when the package 1 expands due to the internal pressure. Occlusion of the area can be prevented.

In addition, by forming the steaming portion 5 at only one location, the user can easily grasp the position of the steaming portion 5, and the risk of being burned can be prevented.

Moreover, by setting the width of the steaming portion 5 to 15 mm or more and 40 mm or less in the extending direction of the chuck member 3, it is possible to prevent the package 1 from bursting and to obtain a steaming effect on the food for heat cooking.

In addition, since the seal portion 21 is disposed on the bottom portion 2a of the bag body 2 facing the chuck member 3, the content S can be filled with the unsealed bottom portion 2a facing upward. As a result, the content S can be easily enclosed in the package 1 using existing equipment for injecting the content into a bag having an open top.

<Second embodiment>
Next, a second embodiment of the invention will be described. FIG. 9 shows a side cross-sectional view passing over the steaming part 5 of the package for microwave heating before opening of the second embodiment. For convenience of explanation, the same parts as those of the first embodiment shown in FIGS. 1 to 8 are given the same reference numerals. This embodiment differs from the first embodiment in the configuration of the vaporization section 5 . Other parts are the same as in the first embodiment.

In this embodiment, the sealing portion 33 is integrally molded with the first base portion 35 and the male portion 31, and the sealing portion 33 extends downward from the lower end of the first base portion 35 to heat the front surface portion 22 at the bonding area HS. Glued.

In addition, the first base portion 35 is heat-bonded to the back surface portion 23 at the bonding regions HS above and below the male portion 31 in the vaporization portion 5 , while the second base portion 36 is above and below the female portion 32 and adheres to the bag body 2 . is not adhered to the

According to this embodiment, the sealing portion 33 extends downward from the lower end of the first base portion 35 adhered to the back portion 23 and is adhered to the inner surface of the front portion 22 of the bag body 2 so as to be easily peelable. Further, the second base portion 36 is adhered to the front portion 22, and the vapor passage portion 5 is formed by leaving the second base portion 36 and the front portion 22 unbonded. Thereby, the same effects as those of the first embodiment can be obtained.

<Third Embodiment>
Next, a third embodiment of the invention will be described. FIG. 10 is a plan view showing a state before opening the microwave oven heating package 1 of the third embodiment. For convenience of explanation, the same parts as those of the first embodiment shown in FIGS. 1 to 8 are given the same reference numerals. In this embodiment, the configuration of the bag body 2 is different from that of the first embodiment. Other parts are the same as in the first embodiment.

The bag body 2 has a bottom sheet 24 forming the bottom. As with the resin sheet 40, the bottom sheet 24 is formed by laminating a substrate layer, an intermediate layer and a sealant layer in order from the outside to the inside. The bottom sheet 24 is sandwiched between the bottom of the front part 22 and the bottom of the back part 23 with the sealant layer facing outward.

The periphery of the bottom sheet 24 is heat-bonded to the resin sheet 40 (see FIG. 4) forming the front surface portion 22 and the back surface portion 23 by the bottom sealing portion 24a. By spreading the bottom sheet 24 to form the bottom surface, the package 1 can stand on its own.

As a result, the package 1 can stand on its own while being heated in a microwave oven with the steaming part 5 facing upward. Therefore, there is no need to use a separate member such as the exterior box 100 (see FIG. 1) to arrange the vaporization section 5 upward, which improves convenience.

FIG. 11 shows a plan view of the microwave oven heating packaging material 10 before filling with the content S. FIG. A packaging body 1 is formed by filling a content S into a microwave oven heating packaging material 10 (hereinafter abbreviated as packaging material 10).

In the packaging material 10, the periphery of the bag body 2 is sealed with a sealing portion 21 and a bottom sealing portion 24a. In addition, an unsealed portion 21a in which the sealed portion 21 is not formed is provided on one side of the bag body 2. As shown in FIG. Further, the sealed portion 21 has a pair of protruding portions 21b which are adjacent to both sides of the unsealed portion 21a and protrude toward the storage portion 4 side.

The packaging material 10 is set in the filling machine with the unsealed portion 21a facing upward. At this time, the packaging material 10 is in a state where the sealing portion 33 is adhered and the chuck member 3 is closed.

The content S is filled into the storage portion 4 from above through the unsealed portion 21 . After the content S is filled, the unsealed portion 21a is sealed to form the package 1 in which the content S is enclosed.

At this time, even if the sealing position shifts toward the housing portion 4 when sealing the unsealed portion 21a, the unsealed portion 21a is closed by sealing across the projecting portion 21b. As a result, the contents S can be reliably enclosed in the package 1, and the unsealed portion 21a can be easily sealed.

According to this embodiment, the bag main body 2 is formed so that it can stand on its own by heat-bonding the periphery of the bottom sheet 24 sandwiched between the lower surfaces of the opposing surfaces by the bottom sealing portion 24a, so that the bag body 2 can stand on its own when heated in a microwave oven. The package 1 can be made self-supporting by arranging the steaming part 5 upward. Therefore, there is no need to use a separate member to arrange the vaporizing portion 5 upward, which improves convenience.

In addition, since the sealing portion 21 has a pair of protruding portions 21b which are adjacent to both sides of the unsealed portion 21a and protrude toward the storage portion 4, the seal position is positioned on the storage portion 4 side when sealing the unsealed portion 21a. Even if it is displaced, it is sealed across the projecting portion 21b and the unsealed portion 21 is closed. As a result, the contents S can be reliably enclosed in the package 1, and the unsealed portion 21a can be easily sealed.

<Fourth Embodiment>
Next, a fourth embodiment of the invention will be described. FIG. 12 is a plan view of the microwave oven heating packaging material 10 of the fourth embodiment. For convenience of explanation, the same reference numerals are given to the same parts as in the third embodiment shown in FIGS. 10 and 11 described above. In this embodiment, the configuration of the bag body 2 is different from that of the third embodiment. Other parts are the same as in the third embodiment.

The packaging material 10 is of a three-side seal type, and is formed by preparing one resin sheet 40 preliminarily cut into a rectangular shape, folding it in two, and sealing three adjacent sides with a sealing portion 21 . Further, an unsealed portion 21a in which the sealed portion 21 is not formed is provided on one side of the bag body 2, and the sealed portion 21 has a projecting portion 21b.

The packaging material 10 is filled with the content S through the unsealed portion 21a. Thereby, the same effects as those of the third embodiment can be obtained. Note that the projecting portion 21b may be omitted in the third and fourth embodiments. Thereby, the capacity of the storage section 4 can be increased.

Next, the action and effects of the present invention will be specifically described using examples and comparative examples. In this example, the width D of the steaming portion 5 was changed to evaluate bag-making properties and steamability.

[Sample preparation of package]
The packages 1 according to Examples 1 to 6 and Comparative Examples 1 to 4 were formed by overlapping two resin sheets 40 (215 mm long and 178 mm wide) and sealing both sides and the bottom with a width of 7 mm. . The resin sheet 40 comprises a biaxially oriented transparent vapor-deposited polyethylene terephthalate film (about 12 μm thick) as the substrate layer 41 , a biaxially oriented nylon film (about 15 μm thick) vapor-deposited with silica as the intermediate layer 42 , and a sealant layer 43 as an empty film. An oriented polypropylene film (approximately 60 μm thick) was used.

The vertical width of the bonding region HS where the first base portion 35 and the back portion 23 are thermally bonded is 5 mm, and the vertical width of the bonding region HS where the second base portion 36 and the front portion 22 are thermally bonded. was set to 5 mm.

Further, the width D of the vaporizing portion 5 in Examples 1 to 6 was set to 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, and 40 mm, respectively.

On the other hand, the width D of the vaporizing portion 5 in Comparative Examples 1 to 4 was 3 mm, 5 mm, 10 mm, and 45 mm, respectively.
[Evaluation of bag-making properties]

Spacers (thickness: 2 to 5 mm) are arranged above and below the male part 31 and the female part 32, respectively, and the chuck member 3 is held between the outer surface side of the front part 22 and the outer surface side of the back part 23 with a heat seal bar. It was heat-sealed (240° C., 0.5 seconds, surface pressure 0.2-0.4 MPa). At this time, the second base portion 36 was sandwiched between the heat seal bar on the outer surface side of the front portion 22 and the spacer without disposing the heat seal bar on the outer surface side of the back portion 23 in the vaporizing portion 5 . As a result, the second base portion 36 and the front surface portion 22 are thermally bonded to each other in the bonding region HS in the vapor passage portion 5 , and the first base portion 35 is not bonded to the back surface portion 23 .

After heat-sealing, it is visually observed whether or not the first base portion 35 and the back surface portion 23 are unbonded in the vapor passage portion 5, and the package in which the first base portion 35 and the back surface portion 23 are bonded is checked. It was determined that the adhesion on the male side was poor. In addition, in the vaporizing section 5, it is visually observed whether or not the second base portion 36 and the front surface portion 22 are adhered to each other. judged to be defective.
[Evaluation of vaporization]

Water (150 ml) was placed in the inside of the package 1 which had been normally made, and the male part 31 and the female part 32 were brought into engagement with each other and heated in a microwave oven for 2 minutes (500 W). At this time, it is visually observed whether or not the interlocking state of the male portion 31 and the female portion 32 is released, and the package 1 in which the interlocking state of the male portion 31 and the female portion 32 is released is regarded as poor steaming. It was judged.

In the evaluation of bag-making property and vaporization property, 10 bags were made for each package 1 according to Examples 1 to 6 and Comparative Examples 1 to 4, and the rate of occurrence of defects was calculated and the results were obtained. Table 1 shows.

As shown in Table 1, the packaging bodies 1 according to Examples 1 to 6 had an incidence of 0% male side adhesion failure and female side adhesion failure in the evaluation of bag-making properties, and Comparative Examples 1 and 2. , 4 was low. In addition, the rate of occurrence of poor vaporization in the evaluation of vaporization was 10% or less, which was low compared to Comparative Examples 1-3.

INDUSTRIAL APPLICABILITY The present invention can be used for a microwave oven heating package having a chuck member.

1 package (package for microwave heating)
2 Bag body 2a Bottom 3 Chuck member 4 Storage part 5 Vaporization part 10 Packaging material (packaging material for microwave oven heating)
21 sealed portion 21a unsealed portion 21b projecting portion 22 front portion 23 rear portion 24 bottom sheet 24a bottom sheet portion 29 notch portion 31 male portion 32 female portion 33 sealing portion 35 first base portion 36 second base portion 40 resin sheet 41 base material Layer 42 Intermediate layer 43 Sealant layer 100 Outer box 101 Top plate 102 Side plate 103 Front plate 110 Hinge lines 111a, 111b Opening line 112 Grip part 120 Lid part S Contents VP Steam

Claims (7)

A packaging body for heating in a microwave oven, comprising: a bag body having a peripheral edge sealed by a sealing portion; and a chuck member disposed on the inner surface of the upper portion of the bag body; ,
The chuck member protrudes from a strip-shaped first base adhered to one opposing surface of the bag body, and protrudes from a strip-shaped second base adhered to the other opposing surface of the bag body. a female portion that engages with the male portion; and a sealing portion that extends downward from a lower end of one of the first base portion and the second base portion and adheres to the inner surface of the bag body in an easy-peelable manner to seal the storage portion. and
1. A package for heating in a microwave oven, characterized in that only a part of the other of said first base and said second base is provided with a steaming part that is not adhered to said bag body. 2. The package for heating in a microwave oven according to claim 1, wherein said vaporizing portion is arranged at a side end portion of said chuck member. 3. The package for heating in a microwave oven according to claim 1, wherein said steaming part is formed only at one place. 4. The package for heating in a microwave oven according to claim 3, wherein the width of said vaporizing portion is 15 mm or more and 40 mm or less in the extending direction of said chuck member. 5. The package for heating in a microwave oven according to claim 1, wherein the sealing portion is disposed on the bottom of the bag body facing the chuck member. The package for microwave heating according to any one of claims 1 to 5, wherein the sealing portion on one side of the bag body has a pair of protrusions that protrude toward the storage portion and are arranged vertically. 7. The bottom surface of the bag body is formed by heat-bonding the periphery of the bottom sheet folded in two between the lower parts of the front and back parts facing each other with the bottom sealing part to form the bottom surface. package for microwave heating.

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