JP6108589B2 - Packaging bag for heating - Google Patents

Description

  The present invention relates to a heating packaging bag, and more particularly to a heating packaging bag suitable for heating a content containing a large amount of moisture.

2. Description of the Related Art Conventionally, there is known a packaging bag in which wet towels are individually packaged, and a wet towel can be used by opening the packaging bag at an arbitrary place.
And when heating the packaging bag containing the water-rich contents such as hand towels and warming the contents, the steam generated inside the packaging bag is automatically discharged to the outside. There is known a packaging bag for heating which prevents the rupture of the battery (for example, see Patent Document 1).

Japanese Patent Laying-Open No. 2005-200022

  However, in the case of the above-mentioned Patent Document 1, when the internal pressure of the packaging bag suddenly increases due to the steam generated from the contents, for example, by heating in a microwave oven, the packaging bag is ruptured by automatically discharging the steam. For example, when keeping warm at a desired temperature by heating with a hot warmer, for example, the steam is gradually discharged from the inside of the packaging bag, and the contents may be dried. was there.

  The objective of this invention is providing the packaging bag for a heating which can heat the content containing a water | moisture content appropriately.

In order to solve the above problems, the invention described in claim 1
It is provided with a palm joint part in which both ends of the sheet material folded into a cylindrical shape are joined in a palm form, and an edge joint part joined so as to close both sides of the cylindrical form, and contains moisture inside A pillow-type packaging bag for heating containing a hand towel ,
The palm joint part has a first joint part provided on the end side of the sheet material and a second joint part provided on the hand towel side from the first joint part,
A non-joining region where the sheet materials are not joined is provided between the first joining portion and the second joining portion, and the non-joining region is a cut for tearing the sheet material. The tape is provided with a length over almost the entire length of the non-bonded area;
The second joint is characterized in that the joint strength is weaker than that of the first joint.

  ADVANTAGE OF THE INVENTION According to this invention, the outstanding packaging bag for a heating which can heat the content containing a water | moisture content appropriately can be obtained.

It is a perspective view which shows the packaging bag for heating which concerns on this invention. It is a perspective view which shows an example of the usage condition of the packaging bag for a heating which concerns on this invention. It is a perspective view which shows the modification of the packaging bag for heating of this invention. It is a perspective view which shows the modification of the packaging bag for heating of this invention. It is a perspective view which shows the modification of the packaging bag for heating of this invention. It is a perspective view which shows the modification of the packaging bag for heating of this invention. It is a perspective view which shows the modification of the packaging bag for heating of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

FIG. 1 is a perspective view showing a heating packaging bag in the present embodiment.
As shown in FIG. 1, the heating packaging bag 10 includes a palm joint 1 that joins both ends of a sheet material 9 that is bent into a tubular shape, and an edge joint that joins both sides of the tubular so as to be closed. 2, and a pillow-type packaging bag that contains a content containing moisture (for example, a wet towel P) therein.
The state in which both ends of the sheet material 9 are joined in a palm shape means a state in which the sheet material 9 is bent so that both ends are aligned, and the same surfaces at both ends are brought into contact with each other and joined.

The palm joint 1 in the heating packaging bag 10 is provided on the first joint 1a provided on the end side of the sheet material 9 and on the contents (wet towel P) side of the first joint 1a. It has the 2nd junction part 1b.
Moreover, the non-joining area | region 3 where the sheet | seat materials 9 are not joined is provided between the 1st junction part 1a and the 2nd junction part 1b.
In the non-joining area 3, an opening knob portion 4 that is an opening means for tearing the sheet material 9 in the non-joining area 3 is provided. When the user pulls the opening knob 4, as shown in FIG. 2, it is possible to tear the sheet material 9 to form a slit. For example, the opening knob portion 4 is formed by coloring small pieces of the same material as the sheet material and firmly adhering to the surface of the sheet material 9. Further, the opening knob 4 may be a protruding piece integrally formed with the sheet material 9.

As the sheet material 9 for the heating packaging bag 10, for example, biaxially stretched polyethylene terephthalate (PET), biaxially stretched polypropylene (OPP), biaxially stretched nylon (ON), or the like can be used.
Then, the sheet materials 9 that are bent and opposed to each other are joined together via a thermo-adhesive resin, so that a palm joint 1 and an edge joint 2 are formed.
As the thermal adhesive resin, for example, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer (EVA), unstretched polypropylene (CPP), or the like can be used. The thickness of the heat adhesive resin is, for example, 15 to 80 μm.
The method of laminating the heat-adhesive resin on the sheet material 9 is performed by, for example, extrusion lamination (EC) or dry lamination (DL), and the laminating structure is, for example, PET / EC / LDPE, PET / DL / LLDPE, PET / DL / CPP, OPP / EC / LDPE, OPP / DL / LLDPE, OPP / DL / CPP, and the like.
Then, a well-known thermal bonding process is performed on a predetermined portion of the sheet material 9, and the sheet material 9 is fused with a thermoadhesive resin, so that the palm joint portion 1 and the edge joint portion 2 are formed. Note that the bonding strength of each bonded portion can be adjusted by appropriately selecting the type and thickness of the heat-adhesive resin, the processing temperature during the heat bonding, and the like according to the desired bonding strength.

Here, the 2nd junction part 1b in the palm joint part 1 is designed by the joint strength weaker than the 1st junction part 1a.
For example, the bonding strength of the first bonding portion 1a is designed to be 30 [N / 15 mm] or more, and the bonding strength of the second bonding portion 1b is designed to be 10 [N / 15 mm] or less.
In addition, it is preferable that the joining strength of the edge joining part 2 is equivalent to the 1st joining part 1a of the palm joint part 1.

  Next, a procedure for heating and using the bookmark P accommodated in the heating packaging bag 10 will be described.

For example, when the hand towel P is heated together with the heating packaging bag 10 in a microwave oven, the heating packaging bag 10 in a state in which the sheet material 9 is torn using the opening knob 4 and a slit is formed in the non-joining region 3. It is set in a microwave oven and heated by a predetermined operation.
Then, the internal pressure of the heating packaging bag 10 is increased by the steam generated by the heating. For example, when the temperature of the hand towel P reaches about 60 ° C., the second bonding portion 1b is peeled off, and with a quiet opening sound. Steam is discharged outside the packaging bag.
The user can recognize the timing at which the second bonding portion 1b is peeled off by an opening sound or the like, and can take out the hand towel P heated to a preferable temperature (for example, 60 ° C.) from the slit opening of the heating packaging bag 10 and use it. it can.
In this way, if the heating packaging bag 10 is heated in a microwave oven in a state where slits are previously formed in the non-joining region 3, the internal pressure of the packaging bag increases too much and the heating packaging bag 10 ruptures, resulting in a high temperature. It is possible to prevent the trouble that the moisture becomes scattered.

Further, when the hand towel P is heated together with the heating packaging bag 10 with a hot warmer, the sealed heating packaging bag 10 is placed in the hot warmer cabinet without forming a slit in the non-joining region 3, and set temperature (for example, (60 ° C.).
For example, even if the temperature of the hand towel P reaches the set temperature, the internal pressure of the heating packaging bag 10 increases due to the generated steam, and the second bonding portion 1b may peel off, the heating packaging bag 10 Since the first joint 1a and the edge joint 2 are sealed, the steam is not discharged to the outside of the packaging bag, and the hand towel P is not dried.
The user can recognize that the one in the state where the second bonding portion 1b is peeled out of the heating packaging bag 10 being kept warm in the hot warmer cabinet has been properly heated. The user selects the heating packaging bag 10 containing the hand towel P warmed to a preferable temperature (for example, 60 ° C.), and tears the sheet material 9 by using the opening knob portion 4 so that the appropriate temperature is obtained. The hand towel P can be taken out and used.
Thus, if the heating packaging bag 10 is heated with a hot warmer in a state where no slit is formed in the non-bonded region 3, it is possible to prevent trouble that the towel P is dried even if the heat retention time is long.

Thus, if it is the packaging bag 10 for heating of this embodiment, in heating the hand towel P accommodated in the inside, it can be warmed rapidly with a microwave oven or kept warm for a long time with a hot warmer. Both can be done appropriately.
For example, when heating the packaging bag 10 containing the hand towel P with a microwave oven, the timing at which the second bonding portion 1b is peeled is recognized by the opening sound, and the electronic device in operation when the opening sound is emitted If the range is stopped, the hand towel P warmed to an appropriate temperature can be used without overheating the hand towel P.
In addition, when the heating packaging bag 10 containing the hand towel P is heated with a hot warmer, it is possible to recognize that the hand towel P has been warmed to an appropriate temperature by peeling off the second joint 1b, and the second joint Since the space for accommodating the hand towel P is widened by the separation of 1b, the internal pressure of the packaging bag can be lowered and the heat retention can be continued well.
That is, it can be said that this heating packaging bag 10 is an excellent heating packaging bag capable of appropriately heating the content (wet towel P) containing moisture.

  The present invention is not limited to the above embodiment.

For example, a cut tape 4a that is an opening means for tearing the sheet material 9 may be provided in the non-joining region 3 as in the heating packaging bag 11 shown in FIG.
The cut tape 4a is a thin band-like or string-like member made of a material stronger than the sheet material 9, and is attached to the inner surface or the outer surface of the sheet material 9 in the non-joined region 3 with one end protruding outward. ing. The cut tape 4a has a length that extends substantially along the entire length of the non-joining region 3 along the first joint 1a and the second joint 1b of the palm joint 1.
Even in the case of this heating packaging bag 11, the hand towel P accommodated therein can be heated appropriately.

Moreover, like the packaging bag 12 for heating shown in FIG. 4, the sheet | seat material 9 of the non-joining area | region 3 is formed in the edge junction part 2 part corresponded between the 1st junction part 1a and the 2nd junction part 1b. You may make it provide the notch part 4b which is an opening means for tearing.
The notch portion 4b is arbitrary such as V notch, U notch, I notch, etc., and may be obtained by other notch processing.
Even in the case of this heating packaging bag 12, it is possible to appropriately heat the hand towel P accommodated therein.
Instead of the notch portion 4b, a cut tape may be provided at the edge joint portion 2 portion.

Further, as shown in the heating packaging bag 13 shown in FIG. 5, a notch portion 4 c which is an opening means for tearing the sheet material 9 in the non-joining region 3 is provided in the first joining portion 1 a portion. Good. The notch portion 4c may be a notch having an arbitrary shape like the notch portion 4b described above.
Even in the case of this heating packaging bag 13, the hand towel P accommodated therein can be appropriately heated.
Instead of the notch portion 4c, a cut tape may be provided at the first joint portion 1a.

Moreover, like the packaging bag 14 for heating shown in FIG. 6, without providing the non-joining area | region 3 between the 1st junction part 1a and the 2nd junction part 1b, the 2nd junction part 1b is equivalent to that. You may make it increase the ratio occupied. In this case, it is preferable to provide the above-described notch portion 4b at the edge joint portion 2 corresponding to the side of the second joint portion 1b.
In the heating packaging bag 14 shown in FIG. 6, a serrated notch portion 4d is provided as an opening means so that the sheet material 9 can be torn from an arbitrary edge joint portion 2 portion.
Even in the case of this heating packaging bag 14, the hand towel P accommodated therein can be appropriately heated.

Moreover, the structure provided with the palm joint part 1 which has the 3rd junction part 1c in the 1st junction part 1a and the 2nd junction part 1b like the packaging bag 15 for heating shown in FIG. 7 may be sufficient. .
The third joint portion 1c is designed to have a joint strength weaker than that of the first joint portion 1a and higher than that of the second joint portion 1b. For example, the joint strength of the third joint portion 1c Is about 20 [N / 15 mm].
For example, when the second bonding portion 1b is peeled off by heating with a hot warmer without forming a slit in the non-bonding region 3 of the heating packaging bag 15, the temperature of the towel towel P becomes about 60 ° C. In addition, when the third joint 1c is peeled off, the temperature of the hand towel P can be set to approximately 70 ° C.
Moreover, when the appropriate temperature of the hand towel P is 60 ° C., it is determined that the heating condition in which the third bonding portion 1 c peels is too warm, and it becomes possible to appropriately adjust the heating condition after the next time.

Moreover, when a slit is formed in the sheet material 9 of the packaging bag 15 for heating and heating is performed with a microwave oven, a slit is formed in the non-joining region 3 between the second joining portion 1b and the third joining portion 1c. When the temperature of the hand towel P reaches about 60 ° C., the second joint 1b peels off, and the steam is discharged to the outside of the packaging bag with a quiet opening sound, and the third joint 1c and the first joint If a slit is formed in the non-joining region 3 between the joints 1a, when the temperature of the hand towel P reaches about 70 ° C., the third joint 1c peels off and the steam is released with a quiet opening sound. Is discharged outside.
Thereby, the internal pressure of the packaging bag is excessively increased by the generated steam to prevent the heating packaging bag 10 from rupturing and the high temperature moisture is scattered, and the temperature of the hand towel P is about 60 ° C. or about It becomes easy to recognize that the temperature has reached 70 ° C.
In addition, in the packaging bag 15 for heating shown in FIG. 7, the serrated notch part 4d is provided as an opening means so that the sheet | seat material 9 can be torn from arbitrary edge joining part 2 parts.
Even in the case of this heating packaging bag 15, the hand towel P accommodated therein can be heated appropriately.

  As described above, the heating packaging bags 10 to 15 according to the present invention are excellent heating packaging bags capable of appropriately heating the content (wet towel P) containing moisture.

  In the above embodiment, the optimum temperature of the hand towel P is set to 60 ° C., and when the temperature of the hand towel P reaches about 60 ° C., the second bonding portion 1b is peeled off. The second bonding portion 1b (or the third bonding portion 1c) may be peeled off at an arbitrary temperature or internal pressure, and may be appropriately adjusted according to the type and use of the contents. That's fine.

  In addition, it is needless to say that other specific detailed structures can be appropriately changed.

DESCRIPTION OF SYMBOLS 1 Joint joining part 1a 1st joining part 1b 2nd joining part 1c 3rd joining part 2 Edge joining part 3 Non-joining area | region 4 Unsealing knob part (opening means)
4a Cut tape (opening means)
4b, 4c, 4d Notch (opening means)
9 Sheet material 10-15 Packaging bag for heating P Wet towel (contents)

Claims (1)

It is provided with a palm joint part in which both ends of the sheet material folded into a cylindrical shape are joined in a palm form, and an edge joint part joined so as to close both sides of the cylindrical form, and contains moisture inside A pillow-type packaging bag for heating containing a hand towel ,
The palm joint part has a first joint part provided on the end side of the sheet material and a second joint part provided on the hand towel side from the first joint part,
A non-joining region where the sheet materials are not joined is provided between the first joining portion and the second joining portion, and the non-joining region is a cut for tearing the sheet material. The tape is provided with a length over almost the entire length of the non-bonded area;
The packaging bag for heating, wherein the second bonding portion has a bonding strength weaker than that of the first bonding portion.

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