JP2024003740A - Package for garden stuff - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package for garden stuff which can protect garden stuff from external impact even when the package has no tray, and can keep freshness of the garden stuff longer.

SOLUTION: A package 100 includes an inner bag 10 including a film 11, an outer bag 20 including a film 21, and a cushion layer 22 which is formed of gas containing oxygen that is made to fill between the inner bag 10 and the outer bag 20. The outer bag 20 includes a seal part 31 which is sealed integrally with the inner bag 10. The volume of the cushion layer 22 is within a range of 1.26 times or more and 1.91 times or less the volume other than garden stuff P in the inner bag 10.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a package for fruits and vegetables.

BACKGROUND ART Packaging bodies for fruits and vegetables are conventionally known. For example, Patent Document 1 discloses a packaging body that includes a tray on which shiitake mushrooms are placed with their caps facing downward, and a film for sealing the packaging.

Further, Patent Document 2 discloses a packaging bag including an inner bag portion made of an inner film and an outer bag portion made of an outer film. The inner bag portion and the outer bag portion are formed by integrally thermally bonding each end of an inner film and an outer film. Further, an air layer is formed between the inner bag portion and the outer bag portion.

Japanese Patent Application Publication No. 08-119358

Japanese Patent Application Publication No. 2004-75100

The package of Patent Document 1 above uses a tray, but from the perspective of protecting the global environment in recent years, it includes an inner bag and an outer bag that do not use a tray, as described in Patent Document 2 above. A package (non-tray package) has been developed. However, simply providing an air layer between the inner bag portion and the outer bag portion, as in the package of Patent Document 2, is insufficient to protect fruits and vegetables when a strong impact is applied from the outside. The problem is that it is not always sufficient. Moreover, it is desirable that the fruit and vegetable packaging body can maintain the freshness of fruits and vegetables for a longer period of time.

In view of the above-mentioned problems, the present invention has been developed to provide a packaging for fruits and vegetables that is capable of protecting fruits and vegetables from external impact and keeping the freshness of fruits and vegetables for a longer period of time even in a non-tray packaging. The purpose is to provide

In order to achieve the above purpose, as a result of intensive study by the inventor of the present application,
an inner bag for storing fruits and vegetables therein, the inner bag including a flexible first film;
an outer bag disposed outside the inner bag and including a flexible second film;
a cushion layer formed of a gas containing oxygen filling a space between the inner bag and the outer bag,
The inner bag includes a first sealed part of the inner bag in which both ends of the first film are sealed in the shape of palms together, one end of the first film in the longitudinal direction of the first sealed part of the inner bag, and one end of the first film in the longitudinal direction of the first film. an inner bag second seal portion in which each of the other ends of the first film is sealed;
The outer bag includes a first seal part of the outer bag, in which both ends of the second film are integrally sealed with the first seal part of the inner bag in the shape of palms together, and one side of the second film in the longitudinal direction. an outer bag second seal portion, each of the end and the other end of the second film being integrally sealed with the inner bag second seal portion,
We have found a structure of a fruit and vegetable package in which the volume of the cushion layer is within the range of 1.26 times or more and 1.91 times or less the volume of the material other than the fruits and vegetables in the inner bag.

According to the above configuration, the volume of the cushion layer becomes an appropriate volume to protect the fruits and vegetables, so even if the package is a non-tray package, the fruits and vegetables can be protected from external impact. Since the volume of the cushion layer (the amount of oxygen) is appropriate for maintaining the freshness of fruits and vegetables, the freshness of fruits and vegetables can be maintained for a longer period of time.

FIG. 1 is a cross-sectional view schematically showing the structure of a fruit and vegetable package 100 according to an embodiment. FIG. 2 is a plan view of the package 100 according to one embodiment. FIG. 3 is a perspective view schematically showing the configuration of the manufacturing apparatus 40 for the package 100 according to one embodiment.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. Identical or corresponding parts in the drawings are denoted by the same reference numerals and their description will not be repeated. Note that the dimensions of each member and the dimensional ratios between the members in the illustrated configuration do not necessarily represent the actual dimensions and dimensional ratios.

[Structure of fruit and vegetable packaging]
FIG. 1 is a sectional view schematically showing the structure of a fruit and vegetable package 100 (hereinafter referred to as "package 100") according to the present embodiment. FIG. 2 is a plan view of the package 100 according to this embodiment.

Here, "vegetables and fruits" include vegetables and fruits. In the following explanation, "shiitake mushrooms" (e.g., "raw shiitake mushrooms") of "mushrooms" in "vegetables" will be used as an example of "fruits and vegetables." "Mushrooms" such as "mushrooms" or "Eringi mushrooms" may be used, "vegetables" other than "mushrooms" may be used, and "fruits" may be used.

As shown in FIG. 1, the package 100 is a double package having an inner bag 10 and an outer bag 20. The inner bag 10 stores fruits and vegetables P therein. For example, a total of six fruits and vegetables P are stored in the inner bag 10, with two columns in the Y direction as shown in FIG. 1 and three rows in the X direction as shown in FIG. Further, the inner bag 10 is made of a flexible film 11. Further, the outer bag 20 is made of a flexible film 21. The outer bag 20 is arranged outside the inner bag 10. Specifically, the outer bag 20 is formed to cover the outer periphery of the inner bag 10. The package 100 also includes a cushion layer 22 formed of oxygen-containing gas (for example, air) that fills the space between the inner bag 10 and the outer bag 20. Moreover, air is sealed in the inner bag 10 in addition to the fruits and vegetables P.

As shown in FIG. 2, the package 100 is a pillow type package. Specifically, the package 100 includes seal portions 31, 32a, and 32b. The seal portions 31, 32a, and 32b are, for example, portions where the films 11 and 21 are thermally welded, respectively, and are portions where the films 11 and 21 are welded or bonded. As shown in FIG. 1, the sealed portion 31 is a portion where both ends 11a and 11b of the film 11 are sealed in the shape of joined palms, and both ends 21a and 21b of the film 21 are sealed in the shape of joined hands. This is the part where That is, both side ends 11a and 11b of the film 11 and both side ends 21a and 21b of the film 21 are integrally sealed.

Further, as shown in FIG. 2, the seal portion 32a is attached to one end 1 of the film 11 in the longitudinal direction of the seal portion 31 (for example, the machine direction and the direction in which the film 11 is conveyed: the X1 direction).
1c and one end 21c of the film 21 are sealed portions. That is, one end 11c of the film 11 and one end 21c of the film 21 are integrally sealed. The seal portion 32b is a portion where the other end 11d of the film 11 in the longitudinal direction of the seal portion 31 (the end in the X2 direction) and the other end 21d of the film 21 are sealed. That is, the other end 11d of the film 11 and the other end 21d of the film 21 are integrally sealed.

Further, as shown in FIGS. 1 and 2, the inner bag 10 and the outer bag 20 are not heat-sealed at locations other than the seal portions 31, 32a, and 32b.

The films 11 and 21 are each made of, for example, flexible biaxially oriented polypropylene (OPP: Oriented Polypropylene), but other materials may be used. In this embodiment, the films 11 and 21 may be films containing biomass-based materials. For example, films 11 and 21 are films that can display the biomass mark "Biomass 10" prescribed by the Japan Organic Resources Association, and films 11 and 21 each contain 10% biomass-based materials. Contains or more. Biomass-based materials refer to raw materials derived from plants. Furthermore, in the following description, OPP containing 10% or more of biomass-based materials will be referred to as "green OPP." Note that the films 11 and 21 may be films containing biomass materials other than films that can display "biomass 10" (films containing less than 10% of biomass materials), and may be films containing biomass materials of less than 10%. It may be a film that does not contain it.

Further, the oxygen permeability of the film 11 is, for example, a value within the range of 2394 [cm3/(m2/24h/atm)] or more and 3610 [cm3/(m2/24h/atm)] or less. , but not limited to values within this range. The oxygen permeability of the film 21 is, for example, a value within the range of 1900 [cm3/(m2/24h/atm)] or more and 3610 [cm3/(m2/24h/atm)] or less. It is not limited to values within a range.

In addition, the water vapor permeability of the films 11 and 22 is, for example, a value within the range of 5.7 [g/(m2・day)] or more and 10.1 [g/(m2・day)] or less. However, it is not limited to values within this range.

Further, in the present embodiment, the volume V2 of the cushion layer 22 is within a range of 1.26 times or more and 1.91 times or less of the volume V1 of the portion other than the fruits and vegetables P in the inner bag 10. Moreover, in this embodiment, the volume V2 of the cushion layer 22 is within the range of 1.76 times or more the volume V3 of the fruits and vegetables P and 1.91 times or less the volume V1. Further, the volume V1 is larger than the volume V3. The volumes V1 to V3 are measured, for example, with the inner bag 10, the outer bag 20, and the fruits and vegetables P submerged in water at room temperature. For example, the width of rise in the water level of a container containing water or the amount of water overflowing from the container is measured, and the volumes V1 to V3 are calculated from the width or amount of water.

According to the above configuration, the volume V2 of the cushion layer 22 is an appropriate volume to protect the fruits and vegetables P, so even if the packaging body 100 is a non-tray, the fruits and vegetables P can be protected from external impact. can. Since the volume V2 (amount of oxygen) of the cushion layer 22 is appropriate for maintaining the freshness of the fruits and vegetables P, it is possible to prevent the fruits and vegetables P from discoloring or from producing a strange odor.

With reference to FIG. 3, the configuration of the manufacturing apparatus 40 for the package 100 will be described. FIG. 3 is a perspective view schematically showing the configuration of the manufacturing apparatus 40 for the package 100 according to one embodiment. As shown in FIG. 3, the manufacturing device 40 includes an inner bag roller 41, an outer bag roller 42, and a first sealing machine 4.
3, two nozzles 44, and a second sealing machine 45.

The inner bag roller 41 is wound with the film 11, and supplies the strip-shaped film 11 in the X1 direction. The outer bag roller 42 is arranged at a position in the Z2 direction relative to the inner bag roller 41. The outer bag roller 42 is wound with the film 21, and supplies the strip-shaped film 21 in the X1 direction. The first sealing machine 43 heats both ends 11a and 11b of the film 11 and both ends 21a and 21b of the film 21 to thermally weld them to each other. The two nozzles 44 enclose air for a predetermined period of time. As a result, the volume V2 of the cushion layer 22 is within the range of 1.26 times or more and 1.91 times or less the volume V1 of the inside bag 10 other than the fruits and vegetables P (hereinafter referred to as "internal volume V1"). Further, the volume V2 of the cushion layer 22 is within the range of 1.76 times or more the volume V3 of the fruits and vegetables P and 1.91 times or less the volume V1. Further, the tip portion 44a (air outlet) of the nozzle 44 is arranged, for example, near the second sealing machine 45 (at a position in the X1 direction relative to the first sealing machine 43). Thereby, even if air leaks in the X2 direction, the cushion layer 22 can be formed, and the volume V2 of the cushion layer 22 can be within the range of 1.26 times or more and 1.91 times or less of the volume V1.

The second sealing machine 45 thermally welds one end 11c of the film 11 and one end 21c of the film 21 to form a seal portion 32a. Further, the second sealing machine 45 thermally welds the other end 11d of the film 11 and the other end 21d of the film 21 to form the seal portion 32b. Further, after forming the seal portion 32b, the second sealing machine 45 separates the seal portion 32b from the band-shaped films 11 and 21, and the package 100 is completed.

Next, examples according to this embodiment will be described with reference to Tables 1 to 9.

<Example 1-1>
Example 1-1 was obtained in which the internal volume V1 was "584 ml", the cushion layer volume V2 was "736 ml", and the volume V3 of fruits and vegetables P was "419 ml".

<Example 1-2>
Example 1-2 was obtained in which the internal volume V1 was "472 ml", the cushion layer volume V2 was "878 ml", and the volume V3 of fruits and vegetables P was "407 ml".

<Example 1-3>
Example 1-3 was obtained in which the internal volume V1 was "470 ml", the cushion layer volume V2 was "896 ml", and the volume V3 of fruits and vegetables P was "381 ml".

<Comparative example 1-1>
Comparative Example 1-1 was obtained in which the internal volume V1 was "347 ml", the cushion layer volume V2 was "693 ml", and the volume V3 of fruits and vegetables P was "419 ml".

<Comparative example 1-2>
Comparative Example 1-2 was obtained in which the internal volume V1 was "569 ml", the cushion layer volume V2 was "253 ml", and the volume V3 of fruits and vegetables P was "445 ml".

(Shape retention evaluation)
First, the above-mentioned Examples 1-1 to 1-3 and the above-mentioned Comparative Examples 1-1 and 1-2 were shipped from the applicant's Tsukuba factory in Ibaraki Prefecture in cardboard boxes, and the cardboard boxes were The product arrived at our office in Nagano Prefecture three days after being shipped from our Tsukuba factory. The cardboard box was then shipped from the business office in Nagano Prefecture to the Tsukuba Plant in Ibaraki Prefecture on the same day (3 days after the date of shipment from the Tsukuba Factory), and arrived at the Tsukuba Factory in Ibaraki Prefecture the next day (4 days after the date of shipment from the Tsukuba Factory). . Fresh shiitake mushrooms (fruits and vegetables P) that arrived at the Tsukuba factory in Ibaraki Prefecture were each photographed, and the presence or absence of shape retention was visually evaluated using the following criteria.
〇 ... There is no change in the way the fruits and vegetables P are arranged in the bag, and there is little air leakage from inside the bag to the outside of the bag × ... There is a change in the way the fruits and vegetables P are arranged in the bag, or , Air often leaks from inside the bag to outside the bag.

As shown in Table 1, both Comparative Example 1-1 and Comparative Example 1-2 were rated "×". In Comparative Example 1-1, air escaped from the inside of the bag to the outside of the bag due to vibration during transportation, and the air inside the cushion layer was greatly reduced. It is thought that when more air is introduced, the air pressure increases, making it easier for air to escape through the small gap in the seal. Another possibility is that the bags expand due to the difference in altitude between Ibaraki Prefecture and Nagano Prefecture. When the air escapes as in Comparative Example 1-1, there are many gaps within the cardboard and the bags are scattered. In Comparative Example 1-2, since there is little air in the cushion layer, the inner film cannot be tightened and the fruits and vegetables P cannot be fixed. When we looked at the condition after transportation, we found that the shiitake mushrooms were disorganized in the bag due to vibration during transportation.

On the other hand, as shown in Table 1, all of Examples 1-1 to 1 to 3 were rated "○". Therefore, it was found that within the range of V2/V1 from 1.26 to 1.91, no change was observed in the arrangement of fruits and vegetables P within the bag, and there was little air leakage from the inside of the bag to the outside of the bag. . Further, within a range where the volume V2 of the cushion layer 22 is 1.76 times or more the volume V3 of the fruits and vegetables P and 1.91 times or less the volume V1, changes in the arrangement of the fruits and vegetables P in the bag can be observed. It was found that there was little air leakage from the inside of the bag to the outside of the bag.

(freshness retention evaluation)
After transportation according to the above shape retention evaluation, each fresh shiitake mushroom (fruit and vegetable P) of Examples 1-1 to 1 to 3, Comparative Example 1-1, and Comparative Example 1-2 was photographed to determine whether freshness was maintained. was visually evaluated based on the following criteria.
〇: No discoloration is observed.
×...Discoloration is observed.

As shown in Table 1, Comparative Example 1-2 was rated "×". In Comparative Example 1-2, discoloration was observed in the stem of the fruit or vegetable P (raw shiitake mushroom) after transportation.

As shown in Table 1, all of Examples 1-1 to 1 to 3 were rated "○". Therefore, within the range of V2/V1 from 1.26 to 1.91, at least the freshness of the fruits and vegetables P was maintained. Further, within the range of V3/V1 from 1.76 to 2.35, at least the freshness of the fruits and vegetables P was maintained. Note that Comparative Example 1-1 was also rated "○". Therefore, it was found that the larger the volume V2 of the cushion layer, the better the freshness is maintained.

In order to construct the package according to the example, No. 1 shown in Table 2 was used. 1~No. 4 films were obtained. No. Film No. 1 has an oxygen permeability of 3610 [cm3/(m2/24h/atm)], a water vapor permeability of 10.1 [g/(m2・day)], and a thickness of 18 μm. % or more. No. The film of No. 2 has an oxygen permeability in the range of 2394 to 3218 [cm3/(m2/24h/atm)] and a water vapor permeability in the range of 5.7 to 8.1 [g/ (m2·day)], has a thickness of 23 μm, and contains 10% or more of biomass-based material. No. Film No. 3 has an oxygen permeability of 2440 [cm3/(m2/24h/atm)], a water vapor permeability of 8.0 [g/(m2·day)], and a thickness of 15 μm. No. Film No. 4 has an oxygen permeability of 1900 [cm3/(m2/24h/atm)], a water vapor permeability of 6.6 [g/(m2·day)], and a thickness of 25 μm. Note that the water vapor transmission rate was measured at a temperature of 40° C. and a humidity of 90%.

In all of Examples 2-1 to 2-5 shown in Table 3, V2/V1 is within the range of 1.26 or more and 1.91 or less, and V3/V1 is 1.76 or more and 2.35. It is assumed that it is within the following range. The fruits and vegetables P to be packaged are six "raw shiitake mushrooms."

<Example 2-1>
The film 11 constituting the inner bag 10 has No. No. 3 was used, and the film 21 constituting the outer bag 20 was given No. Example 2-1 was obtained using the film of Example 4.

<Example 2-2>
The film 11 constituting the inner bag 10 has No. No. 1 was used, and the film 21 constituting the outer bag 20 was given No. Example 2-2 was obtained using the film of Example 2-2.

<Example 2-3>
The film 11 constituting the inner bag 10 has No. No. 1 was used, and the film 21 constituting the outer bag 20 was given No. Example 2-3 was obtained using the film of Example 1.

<Example 2-4>
The film 11 constituting the inner bag 10 has No. No. 2 was used, and the film 21 constituting the outer bag 20 was given No. Example 2-4 was obtained using the film of Example 4.

<Example 2-5>
The film 11 constituting the inner bag 10 has No. No. 3 was used, and the film 21 constituting the outer bag 20 was given No. Example 2-5 was obtained using the film of Example 1.

<Comparative example>
A comparative example was obtained by placing a tray made of biaxially stretched polystyrene inside, and wrapping six fresh shiitake mushrooms on the tray with a wrap made of polyolefin.

(Discoloration evaluation)
The raw shiitake mushrooms (Fruits and Vegetables P) were stored for 10 days at 10°C, and the presence or absence of discoloration of the Fruits and Vegetables P was visually evaluated based on the following criteria. In particular, the discoloration of the cap and stem of fresh shiitake mushrooms was evaluated.
◎ ... Almost no discoloration 〇 ... Slight discoloration × ... Discoloration

As shown in Table 4, all of Examples 2-1 to 2 to 5 were rated "○" after 10 days. On the other hand, in the comparative example, the score was "x" after 7 days. Therefore, it was found that Examples 2-1 to 2-5 had less discoloration than the comparative examples.

(withering evaluation)
The fresh shiitake mushrooms (fruits and vegetables P) were stored for 10 days at 10°C, and the presence or absence of wilting of the fruits and vegetables P was visually evaluated based on the following criteria. In particular, the degree of wilting of the cap and stem of fresh shiitake mushrooms was evaluated.
◎ ・・・ No wilt 〇 ・・・ Partial wilt × ・・・ Most part wilt

As shown in Table 5, all of Examples 2-1 to 2-5 were rated "○" or "◎" after 10 days. In particular, Examples 2-3 and 2-4 were rated "◎" after 10 days. On the other hand, in the comparative example, the score was "x" after 7 days. Therefore, it was found that Examples 2-1 to 2-5 had less wilting than the comparative examples.

(Odor evaluation)
The samples were stored at 10° C. for 10 days, and the presence or absence of odor in the cushion layer 22 in Examples 2-1 to 2-5 and the presence or absence of odor in the wrap in Comparative Examples were evaluated based on the following criteria.
◎ ... No strange odor〇 ... Weak strange odor × ... Strong strange odor

As shown in Table 6, in Examples 2-1 to 2-5, the results were rated "○" or "◎" after 7 days. On the other hand, in the comparative example, the score was "x" after the first day. Furthermore, in Examples 2-2 to 2-5, the results were rated "○" or "◎" even after 10 days. Furthermore, in Examples 2-2 to 2-4, the results were rated "◎" after 10 days. Therefore, it was found that Examples 2-1 to 2-5 had less off-odor than the comparative examples.

(Odor evaluation)
They were stored at 10° C. for 10 days, and the presence or absence of mycelium was confirmed in three of the six fruits and vegetables P.
〇 ... No mycelium occurs △ ... Mycelium occurs in one fruit or vegetable P × ... Mycelium occurs in two or more fruits and vegetables P

As shown in Table 7, in Examples 2-1 to 2-5, the results were rated "○" after 10 days. On the other hand, in the comparative example, the score was "Δ" after 6 days, and the score was "x" after 7 days. Therefore, it was found that the generation of hyphae was prevented in Examples 2-1 to 2-5 compared to the comparative example.

(weight evaluation)
It was stored at 10° C. for 10 days, and the rate of change in the weight of the fruits and vegetables P compared to the time at the start of storage after 10 days was measured.

As shown in Table 8, in Examples 2-1 to 2 to 5, the weight change rate was "-0.5%" after 10 days. On the other hand, in the comparative example, the weight change rate was "-2.0%" after 10 days. Therefore, it was found that Examples 2-1 to 2-5 had smaller weight changes than the comparative examples.

(Oxygen concentration evaluation)
The samples were stored at 10° C. for 10 days, and the oxygen concentration in the cushion layer 22 was measured in Examples 2-1 to 2-5, and the oxygen concentration in the wrap was measured in Comparative Examples.
The rate of change was measured.

As shown in Table 9, in Examples 2-1 to 2 to 5, the oxygen concentration reached "11.1%" or more after 10 days. On the other hand, in the comparative example, the oxygen concentration became 0.2% or less after at least 3 days. Therefore, it was found that the oxygen concentration was maintained in Examples 2-1 to 2-5 compared to the comparative example.

[Modified example]
The specific examples illustrated in the above embodiments are merely examples, and the present disclosure is not intended to be limited thereto.

(1) In the above embodiment, as shown in FIGS. 1 to 3, an example was shown in which six fruits and vegetables are housed in the package, but the number of fruits and vegetables may be less than five or seven. There may be more than one.

Note that the present disclosure can also be explained as follows.

[First configuration]
The fruit and vegetable package according to the first configuration includes:
an inner bag for storing fruits and vegetables therein, the inner bag including a flexible first film;
an outer bag disposed outside the inner bag and including a flexible second film;
a cushion layer formed of a gas containing oxygen filling a space between the inner bag and the outer bag,
The inner bag includes a first sealed part of the inner bag in which both ends of the first film are sealed in the shape of palms together, one end of the first film in the longitudinal direction of the first sealed part of the inner bag, and one end of the first film in the longitudinal direction of the first film. an inner bag second seal portion in which each of the other ends of the first film is sealed;
The outer bag includes a first seal part of the outer bag, in which both ends of the second film are integrally sealed with the first seal part of the inner bag in the shape of palms together, and one side of the second film in the longitudinal direction. an outer bag second seal portion, each of the end and the other end of the second film being integrally sealed with the inner bag second seal portion,
The volume of the cushion layer is within a range of 1.26 times or more and 1.91 times or less of the volume of the portion other than the fruits and vegetables in the inner bag.

According to the first configuration, the volume of the cushion layer is appropriate for protecting the fruits and vegetables, so even if the package is a non-tray package, the fruits and vegetables can be protected from external impact. Since the volume of the cushion layer (the amount of oxygen) is appropriate for maintaining the freshness of fruits and vegetables, the freshness of fruits and vegetables can be maintained for a longer period of time.

[Second configuration]
In the first configuration, the oxygen permeability of the first film is a value within the range of 2394 [cm3/(m2/24h/atm)] or more and 3610 [cm3/(m2/24h/atm)] or less. The oxygen permeability of the second film may be a value within the range of 1900 [cm3/(m2/24h/atm)] or more and 3610 [cm3/(m2/24h/atm)] or less. It may be.

According to the second configuration, since oxygen is supplied to the fruits and vegetables, freshness can be maintained. Furthermore, if the oxygen permeability is too high, the strength and transparency of the film will decrease, but according to the second configuration, the freshness of fruits and vegetables can be maintained while maintaining the strength and transparency of the film. be able to.

[Third configuration]
In the first or second configuration, the water vapor permeability of the first film and the water vapor permeability of the second film are 5.7 [g/(m2・day)] or more and 10.1 [g/( m2·day)] may be a value within the following range.

According to the third configuration, the freshness of fruits and vegetables can be maintained.

[Fourth configuration]
In any one of the first to third configurations, the volume of the cushion layer may be set within a range of 1.76 times or more and 2.35 times or less the volume of the fruit or vegetable.

According to the fourth configuration, the volume of the cushion layer can be ensured to be large enough for the volume of the fruits and vegetables, so the fruits and vegetables can be protected from external impact.

[Fifth configuration]
In any one of the first to fourth configurations, at least one of the first film and the second film may include biaxially oriented polypropylene.
[Sixth configuration]
In the fifth configuration, the first film and the second film may each include biaxially oriented polypropylene containing a biomass-based material.

According to the sixth configuration, it is possible to suppress the occurrence of strange odors.

[Seventh configuration]
In any one of the first to sixth configurations, the fruit or vegetable may be a mushroom.

According to the seventh configuration, it is possible to provide a tray-free package that can protect mushrooms from external impacts.

[Eighth configuration]
In a seventh configuration, the mushroom may be a shiitake mushroom.

According to the eighth configuration, it is possible to provide a packaging body that is a non-tray packaging body and is capable of protecting shiitake mushrooms from external impacts.

10... Inner bag, 11... Film, 11a... Side end, 11c... One end, 11d... Other end, 20... Outer bag, 21... Film, 21... Side end, 21c... One end, 21d... Other end, 22...Cushion layer, 31...Seal part, 32a...Seal part, 32b...Seal part, 100...Fruit or vegetable packaging body

Claims (8)

an inner bag for storing fruits and vegetables therein, the inner bag including a flexible first film;
an outer bag disposed outside the inner bag and including a flexible second film;
a cushion layer formed of a gas containing oxygen filling a space between the inner bag and the outer bag,
The inner bag includes a first sealed part of the inner bag in which both ends of the first film are sealed in the shape of palms together, one end of the first film in the longitudinal direction of the first sealed part of the inner bag, and one end of the first film in the longitudinal direction of the first film. an inner bag second seal portion in which each of the other ends of the first film is sealed;
The outer bag includes a first seal part of the outer bag, in which both ends of the second film are integrally sealed with the first seal part of the inner bag in the shape of palms together, and one side of the second film in the longitudinal direction. an outer bag second seal portion, each of the end and the other end of the second film being integrally sealed with the inner bag second seal portion,
The volume of the cushion layer is within a range of 1.26 times or more and 1.91 times or less of the volume of the portion other than the fruits and vegetables in the inner bag. The oxygen permeability of the first film is a value within the range of 2394 [cm / (m / 24 h / atm)] or more and 3610 [cm / (m / 24 h / atm)] or less,
The oxygen permeability of the second film is a value within a range of 1900 [cm3/(m2/24h/atm)] or more and 3610 [cm3/(m2/24h/atm)] or less. 1. The fruit and vegetable package according to item 1. The water vapor permeability of the first film and the water vapor permeability of the second film are 5.7 [g/(m2・day)] or more and 10.1 [g/(m2・day)] or less. The package for fruits and vegetables according to claim 2, wherein the value is within the range. The volume of the cushion layer is within the range of 1.76 times or more the volume of the fruits and vegetables and 1.91 times or less the volume of the other fruits and vegetables in the inner bag,
The package for fruits and vegetables according to any one of claims 1 to 3, wherein the volume of the portion other than the fruits and vegetables in the inner bag is larger than the volume of the fruits and vegetables. The package for fruits and vegetables according to any one of claims 1 to 3, wherein at least one of the first film and the second film contains biaxially oriented polypropylene. The package for fruits and vegetables according to claim 5, wherein at least one of the first film and the second film includes biaxially oriented polypropylene containing a biomass-based material. The package for fruits and vegetables according to any one of claims 1 to 3, wherein the fruits and vegetables are mushrooms. The fruit and vegetable package according to claim 7, wherein the mushroom is a shiitake mushroom.

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