WO2020009036A1 - Freshness holding container, freshness holding container constituent member and method for manufacturing same - Google Patents

Freshness holding container, freshness holding container constituent member and method for manufacturing same Download PDF

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Publication number
WO2020009036A1
WO2020009036A1 PCT/JP2019/025914 JP2019025914W WO2020009036A1 WO 2020009036 A1 WO2020009036 A1 WO 2020009036A1 JP 2019025914 W JP2019025914 W JP 2019025914W WO 2020009036 A1 WO2020009036 A1 WO 2020009036A1
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Prior art keywords
container
film
freshness holding
holding container
ventilation
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PCT/JP2019/025914
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French (fr)
Japanese (ja)
Inventor
渡辺　徹
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株式会社Ｗ
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Publication of WO2020009036A1 publication Critical patent/WO2020009036A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators

Definitions

  • the present invention relates to a freshness holding container, a member for forming a freshness holding container, a method for producing the same, and the like. More specifically, a freshness holding that can suppress a decrease in freshness of foods and fresh flowers that generate carbon dioxide during storage by respiration or fermentation.
  • the present invention relates to a container, a member for forming a freshness holding container, a method for manufacturing the same, and the like.
  • Packaging materials that can store food that generates carbon dioxide by respiration or fermentation, such as vegetables, fruits, fresh flowers, coffee beans, processed foods, etc., while maintaining freshness, or fresh flowers can be stored for a long time
  • the need for packaging materials is increasing.
  • a packaging material for storing the above foods or the like for a long period of time is required to have two contradictory functions of discharging carbon dioxide and water vapor generated inside and preventing inflow of oxygen from outside. If the discharge of carbon dioxide or water vapor is insufficient, the internal pressure will rise and the packaging material may be damaged, and if the inflow of oxygen is not prevented, the freshness of the contents will decrease due to oxidation.
  • a package of fruits and vegetables is provided with a non-joined portion arranged in a stripe shape on the heat-sealed portion of the package (bag), and the non-joined portion is used as a flow path communicating with the outside of the package.
  • a product has been proposed (Patent Document 1).
  • the non-joined portion (flow path) has a linear (ie, elongated rectangular) planar shape having a width of 0.1 to 5 mm and a length of 1 to 20 mm.
  • the flow path maintains the inside of the container at a low oxygen concentration and a high carbon dioxide concentration, thereby maintaining the freshness of the fruits and vegetables inside.
  • the freshness of the contents can be maintained for a certain period of time.However, since the flow path is relatively short, a large amount of oxygen flows in from the outside, and the freshness of the fruits and vegetables can be maintained for a long period of time. was difficult.
  • the present invention has been made in view of such a point, the inflow of oxygen from the outside is very small, a freshness holding container capable of maintaining the freshness of the contents for a long time, a member for forming a freshness holding container, and It is an object of the present invention to provide a manufacturing method thereof.
  • a freshness holding container having a ventilation part includes a band-shaped joining region having a width of 5 mm or more and 15 mm or less, where two ends of the film are overlapped and joined,
  • the bonding region is constituted by a band-shaped ultrasonic bonding portion in which two ends of the film are bonded to each other,
  • a non-joining portion where the ends of the superposed films are not joined to each other in the ultrasonic joining portion is arranged,
  • the non-joining portion constitutes a non-linear air passage communicating the internal space of the container and the outside of the container,
  • the air passage has a width W of 0.2 mm ⁇ W ⁇ 3 mm and a length L of 20 mm ⁇ L ⁇ 50 mm.
  • a freshness preserving container is provided.
  • the ventilation path has a width W of 0.2 mm ⁇ W ⁇ 3 mm and a length L of 20 mm ⁇ L ⁇ 50 mm. Carbon and water vapor can be quickly discharged to the outside through the ventilation path. In addition, since the ventilation path is non-linear, a decrease in the strength of the joint region due to the ventilation path formed by the non-joined portions is suppressed.
  • the film has an oxygen barrier layer.
  • the film has a thickness of 20 ⁇ m or more and 100 ⁇ m or less.
  • the container has a container body and a lid attached to the container body, A vent is provided in at least one of the container body and the lid.
  • the lid is detachable from the container body.
  • a freshness holding container forming member for forming a freshness holding container It has a ventilation part,
  • the ventilation portion includes a band-shaped joining region having a width of 5 mm or more and 15 mm or less, where two ends of the film are overlapped and joined,
  • the bonding region is constituted by a band-shaped ultrasonic bonding portion in which two ends of the film are bonded to each other, and non-bonding in which the ends of the superimposed film are not bonded to the ultrasonic bonding portion.
  • the non-joining portion constitutes a non-linear air passage communicating the internal space of the container and the outside of the container,
  • the air passage has a width W of 0.2 mm ⁇ W ⁇ 3 mm and a length L of 20 mm ⁇ L ⁇ 50 mm.
  • a member for constituting a freshness holding container is provided.
  • the member for forming a freshness holding container has a ventilation portion provided with a ventilation path, the intrusion of oxygen through the ventilation path is suppressed by attaching such a member for forming a freshness holding container to the opening of the container.
  • a freshness holding container capable of rapidly discharging carbon dioxide and water vapor generated inside the container to the outside through the ventilation path.
  • a member for constituting a freshness holding container is detachably attached to the container.
  • a freshness holding container forming member formed of a plurality of films and having a ventilation portion, wherein the ventilation portion has a width of 5 mm or more and 15 mm or less, in which two ends of the film are overlapped and joined.
  • the joining region is constituted by a band-like ultrasonic joining portion in which two ends of the film are joined to each other, and the ends of the superimposed film are joined to the ultrasonic joining portion.
  • the non-joined part is arranged, and the non-joined part constitutes a non-linear air passage communicating the internal space of the container and the outside of the container, and the air passage has a width W of 0.2 mm.
  • the length L is a method for manufacturing a member for forming a freshness holding container, wherein 20 mm ⁇ L ⁇ 50 mm, Forming the ultrasonic bonding part by ultrasonic welding, A method for producing a member for forming a freshness holding container is provided.
  • the step of forming the ultrasonic bonding part is a step of continuously forming an ultrasonic bonding part in the film while rotating a disk-shaped ultrasonic welding horn with respect to the film.
  • a freshness holding container a member for constituting a freshness holding container, and a method for producing the same, which can keep the freshness of the contents for a long period of time with very little inflow of oxygen from outside the container.
  • FIG. 2 is a sectional view taken along the line II-II of FIG. 1. It is a schematic plan view of the ventilation part of the lid part of the container of FIG.
  • FIG. 4 is a schematic sectional view taken along the line IV-IV in FIG. 3.
  • FIG. 5 is a schematic cross-sectional view along the line VV in FIG. 3. It is a schematic diagram which shows the modification of a non-joining part (airway). It is a schematic diagram which shows the modification of a non-joining part (airway). It is a schematic diagram which shows the modification of a non-joining part (airway). It is a schematic diagram which shows the modification of a non-joining part (airway).
  • FIG. 3 is a schematic plan view of a ventilation member (a member for configuring a freshness holding container). It is a schematic diagram explaining attachment of a ventilation member (member for freshness holding container construction) to a container. It is a schematic diagram for explaining the Example of this invention. It is a schematic diagram for explaining the Example of this invention.
  • FIG. 1 is a schematic plan view of a container 100 according to a preferred embodiment of the present invention.
  • FIG. 2 is a sectional view taken along the line II-II in FIG. In the present application, the ratio of dimensions of each element is not accurately illustrated in the drawings for clarity.
  • the container 100 is, for example, a cylindrical container for storing foods such as coffee, miso, and kimchi, and has a box-shaped main body (container main body) 102 having an open upper end and an open end of the main body 102 sealed. And a cover portion 104 that covers in a state.
  • the lid 104 is formed of a film-like member, is adhered and fixed to the main body 102 along the opening end of the main body 102 with an adhesive or the like, and is configured so that the inside of the container can be maintained in a sealed state.
  • the main body 102 of the present embodiment is a box-shaped main body with an open upper end, but may have another shape, for example, a cylindrical shape with a bottom, as long as the upper end is open. There is no limitation on the size.
  • the material constituting the main body 102 of the present embodiment is not particularly limited as long as it has a property of not allowing gas to permeate.
  • the material constituting the main body 102 of the container 100 of the present embodiment may be transparent or opaque, and may have a printed surface to enhance the design.
  • a material constituting the main body 102 of the container 100 of the present embodiment for example, a polymer such as polyethylene, polypropylene, polystyrene, or polyester, glass, metal, or the like is used.
  • the thickness of the main body 102 of the container 100 of the present embodiment is not limited, but is preferably, for example, about 0.3 mm to 3 mm.
  • the lid 104 is constituted by the film 106, specifically, two films 106a and 106b. As shown in FIGS. 1 and 2, each of the films 106a and 106b has an area of about two-thirds of the area of the opening end of the main body 102, and one end side is overlapped. By being joined, a large number of lids 104 are formed to cover the entire open end of the main body 102.
  • the lid may be formed of three or more films.
  • a band-shaped ultrasonic bonding is performed in a bonding region where one end portions of two films 106 a and 106 b are overlapped and bonded. It is constituted by a unit 108.
  • the film 106 used in the container 100 of the present embodiment is preferably an amorphous polymer film.
  • Specific examples include films of polystyrene, acrylic resin, vinyl chloride, polycarbonate, styrene acrylonitrile copolymer, and the like.
  • the film 106 may be a laminated film in which a plurality of films made of different materials are laminated.
  • the laminated film include a laminated film in which a polystyrene film is laminated inside a polyester, polyethylene or polypropylene film.
  • a film obtained by laminating an oxygen barrier film and another film can also be used as the film 106.
  • the oxygen barrier film known films such as a film made of a polymer containing vinyl alcohol or vinylidene chloride as a constituent, a polymer film on which any one of silica, alumina, and aluminum is deposited, and a metal foil layer can be used.
  • a laminated film in which polystyrene is laminated inside the oxygen barrier film can be used as the films 106a and 106b.
  • the film 106 may be transparent or opaque. When the contents deteriorate due to sunlight, it is preferable to use an opaque packaging film. Further, a film whose surface is printed in order to enhance the design property may be used.
  • the thickness of the film 106 is preferably 10 ⁇ m or more and 300 ⁇ m or less, more preferably 15 ⁇ m or more and 200 ⁇ m or less, and further preferably 20 ⁇ m or more and 100 ⁇ m or less. If the thickness of the film is less than 10 ⁇ m, the strength of the container may be insufficient, and if it exceeds 300 ⁇ m, the cost may be disadvantageous.
  • the width X of the band-shaped ultrasonic bonding portion 108 in which one end portions of the two films 106a and 106b are overlapped and bonded is set to 5 mm or more and 15 mm or less.
  • the width of the ultrasonic bonding portion 108 is more preferably 6 mm or more and 13 mm or less, and further preferably 8 mm or more and 11 mm or less.
  • Preserving the contents can be ensured by setting the width of the ultrasonic bonding portion 108 to 5 mm or more, and ensuring the strength of the ultrasonic bonding portion by setting the width to 15 mm or less.
  • a plurality of portions (non-joined portions) where the one end portions of the two films 106a and 106b are not joined to each other are formed at predetermined intervals in the belt-shaped ultrasonic joining portion 108, This non-joined part constitutes the ventilation path 110.
  • the joining area where the plurality of ventilation paths 110 are arranged in the belt-like ultrasonic joining section 108 constitutes the ventilation section.
  • FIG. 3 is a schematic plan view of a ventilation portion (joining region) of the lid portion 104
  • FIG. 4 is a schematic cross-sectional view taken along line IV-IV of FIG. 3
  • FIG. 5 is a schematic sectional view taken along line VV of FIG.
  • the ventilation passage 110 has a non-linear (specifically, substantially S-shaped) flat ventilation having a constant width and a cross-sectional shape. It is a road.
  • the non-joining portion (air passage) 110 extends from one end of the ultrasonic joining portion 108 to the other end, traversing the band-shaped ultrasonic joining portion 108 having a width X, and the lid portion 104 is connected to the opening of the main body 102 of the container 100. When the end is sealed, it is configured to be a flow path for fluid communication between the internal space of the container 100 and the outside of the container 100 (FIG. 5).
  • the width W of the non-joined portion (air passage) 110 is set to 0.2 mm or more and 3 mm or less.
  • the width W of the ventilation path 110 is more preferably 0.3 mm or more and 2.5 mm or less, and more preferably 0.5 mm or more and 2.0 mm or less.
  • the width W of the ventilation path 110 By setting the width W of the ventilation path 110 to 0.2 mm or more and 3.0 mm or less, it is possible to simultaneously release carbon dioxide and water vapor generated inside the container 100 and prevent oxygen from entering the outside of the container 100. become. Further, when the container 100 is moved, it is difficult for the gas to flow inside the ventilation path 110, and it is difficult for oxygen to enter from the outside.
  • the length L of the ventilation path 110 is set to 20 mm or more and 50 mm or less. Note that the length L of the ventilation path 110 refers to the length from one end to the other end of the ventilation path 110 along the central axis of the ventilation path 110.
  • the length L of the ventilation path 110 is more preferably 22 mm or more and 45 mm or less, and further preferably 25 mm or more and 40 mm or less.
  • the length L of the ventilation path 110 to 20 mm or more and 50 mm or less, release of carbon dioxide and water vapor generated inside the container 100 and prevention of intrusion of oxygen from the outside of the container 100. And are compatible.
  • the ratio L / W of the length L and the width W of the ventilation path 110 is set to 10 or more and 200 or less. If the ratio L / W of the length L to the width W is less than 10, the storage stability of the contents is remarkably deteriorated, and if the ratio exceeds 200, moisture is condensed in the air passage and carbon dioxide This is because the discharge may be insufficient.
  • the ratio L / W of the length L to the width W of the ventilation path 110 is more preferably 15 or more and 150 or less, and further preferably 20 or more and 100 or less.
  • the interval between the ventilation paths 110 is set to 1 mm or more and 100 mm or less.
  • the interval between the ventilation paths 110 is set to 1 mm, an accurate shape of the ventilation path 110 can be secured.
  • the thickness is set to 30 mm or less, a required number of ventilation paths 110 can be provided.
  • the distance between the ventilation paths 110 is more preferably 2 mm or more and 50 mm or less, and still more preferably 3 mm or more and 15 mm or less.
  • the number of air passages 110 formed in the container 100 is set to one or more, but is preferably 3 or more and 100 or less, more preferably 5 or more and 75 or less.
  • the number of ventilation paths is set to 3 or more and 100 or less, more preferably 5 or more and 75 or less, so that the ventilation paths 110 It is possible to prevent carbon dioxide from being clogged by water and insufficient discharge of carbon dioxide, which is preferable.
  • FIGS. 6 to 10 are schematic drawings showing modified examples of the shape of the non-linear air passage 110.
  • the shape of the air passage is not limited to the substantially S-shape of the above embodiment.
  • a "V" shaped ventilation path 110-6 as shown in FIG. 6 a substantially “Z” shaped ventilation path 110-7 as shown in FIG. 7, and an inverted “W” shape as shown in FIG.
  • a plurality of linear portions or curved portions are connected like a ventilating passage 110-8, an arcuate venting passage 110-9 as shown in FIG. 9, and a wavy venting passage 110-10 as shown in FIG. It may be constituted by the above.
  • the ventilation path of the present invention is not limited to the above specific examples, and may be another polygonal line, a curved line, or another non-linear ventilation path combining these.
  • the side end portions of the two films 106a and 106b are partially joined by an ultrasonic welding method to form a film member to be the lid 104.
  • Heating is preferably performed by a method such as a heating roll or infrared heating.
  • the heated film is neutralized. Since the heated film has a reduced elastic modulus and is supple, it is easily charged due to an increase in the contact area when the film contacts an object such as a transport roll. In order to eliminate this charge, it is preferable to remove the charge before the ultrasonic welding.
  • static elimination is performed using an ion wind, a static elimination brush or the like. It is preferable that static elimination is performed so that the surface potential of the film after static elimination becomes 1 kv or less.
  • the surface potential can be measured by, for example, a surface potential meter MODEL341B manufactured by Trek Japan.
  • the surface potential of the film after static elimination preferably has an absolute value of 1 kV or less from the viewpoint of preventing dust.
  • the surface potential can be measured by, for example, a surface potential meter MODEL341B manufactured by Trek Japan.
  • the side ends of the superposed films 106a and 106b are joined by heat sealing or the like, and the side ends of the superposed films 106a and 106b are temporarily fixed so that their relative positions do not shift. By this temporary fastening, the relative positional deviation of the superposed films 106a and 106b is prevented.
  • a joining portion by the ultrasonic joining portion 108 is formed on the side end portions of the films 106a and 106b by an ultrasonic welding method.
  • FIG. 11 is a drawing schematically showing a configuration of a welding apparatus 200 used for the ultrasonic welding method.
  • the welding apparatus 200 includes an ultrasonic oscillator 202 for converting 50 Hz or 60 Hz commercial electricity into a high frequency signal of about 15 to 70 KHz, and a converter 204 for converting the signal into mechanical vibration.
  • the receiving seat 210 can control the temperature.
  • FIG. 12 is a schematic perspective view showing the appearance of the welding horn 208 of the welding device of FIG.
  • the welding device 200 of the present embodiment is a rotary welding device in which the horn 208 has a disk shape as shown in FIG.
  • the diameter of the disk-shaped horn 208 is about 5 to 30 cm, and the thickness is about 0.5 to 1.5 cm.
  • an S-shaped groove 208b corresponding to the substantially S-shape of the air passage 110 of the lid 104 is formed, and the non-joined portion (air passage 110) is formed by the groove 208b. Is formed.
  • the ultrasonic welding portion 8 is continuously formed on the films 106a and 106b. More specifically, the disc-shaped horn 208 is rotated with the laminated films 106a and 106b sandwiched between the horn 208 and the receiving seat 210, and the side ends of the long films 106a and 106b. Next, an ultrasonic welding portion (joining portion) 108 in which a plurality of non-joining portions (air passages 110) are disposed is formed in a belt shape.
  • the amplitude of the ultrasonic wave used in the welding operation is usually 1.5 ⁇ m or more and 100 ⁇ m or less, but from the viewpoint of accurately controlling the width W of the non-joined portion is 2 ⁇ m or more, 15 ⁇ m or less, more preferably 2.5 ⁇ m or more and 10 ⁇ m or less. It is preferred that there be.
  • Welding is performed by applying ultrasonic vibration to the superposed films 106a and 106b while pressing the tip of the horn 208 against the side edges of the superposed films 106a and 106b.
  • the welding time is usually 0.05 seconds or more and 1 second or less. If the time is less than 0.05 seconds, the strength of the bag may be insufficient, and if it exceeds 1 second, the production efficiency may be reduced.
  • the pressing pressure of the horn 208 is preferably about 100 to 500N. If the pressing pressure is less than 100 N, the strength of the welded portion may decrease, and if it exceeds 500 N, a problem may occur due to an excessive load applied to the device.
  • the outer peripheral portions of the horns are continuously in contact with the side end portions of the two superposed films 106a and 106b and ultrasonic welding is performed. And efficient processing can be performed.
  • the two films 106a and 106b having the air passage formed at the joined side end are appropriately cut, and the lid 104 is adhered and fixed to the opening end of the main body 102 with an adhesive or the like. It becomes.
  • the container 100 of the above embodiment is a container in which a ventilation portion is provided in a lid portion 104 bonded to an opening end of a main body 102 having an open upper end.
  • the present invention is illustrated in FIGS.
  • a configuration may be adopted in which a ventilation portion is provided on at least one of the main body and the lid portion of the container in which the lid portion is configured to be detachable from the main body.
  • FIG. 13 is a schematic perspective view of a container 300 according to another embodiment of the present invention
  • FIG. 14 is a schematic perspective view of a container 400 according to still another embodiment.
  • the container 300 for keeping freshness shown in FIG. 13 includes a bottomed cylindrical main body 302 having an open upper end, and a lid 304 detachably attached to the upper end of the main body 302 at the opening. .
  • the lid 304 is also made of a rigid material.
  • an opening 306 is formed in a side wall of the main body 302, and a ventilation member 308 formed of a film is attached to the opening 306 in a sealed state.
  • the ventilation member 308 is formed of two films or the like whose side ends are joined by ultrasonic fusion, and has a ventilation section in which a plurality of ventilation paths are arranged in a joint region (ultrasonic joint).
  • the ventilation member 308 has the same configuration as the lid 104 of the container 100 of the above-described embodiment, and has a ventilation path 310 formed by a non-joined portion of a film similar to the ventilation path 110 of the lid 104. It has. With such a configuration, carbon dioxide, water vapor, and the like generated in the container can be discharged to the outside of the container while suppressing intrusion of oxygen from the outside into the container 300.
  • the container 400 for maintaining freshness shown in FIG. 14 includes a bottomed cylindrical main body 402 having an open upper end, and a lid portion 404 detachably attached to the upper end of the main body 402. . Also in this container 400, it is preferable that the lid portion 404 is also made of a rigid material.
  • an opening 406 is formed in the lid 404, and a ventilation member 408 formed of a film is attached to the opening 406 in a sealed state.
  • the ventilation member 408 includes a ventilation section having a ventilation path 410 formed by a non-joined portion of a film similar to the ventilation path 110 of the lid 104.
  • the ventilation members 308 and 408 are also manufactured using the rotary welding device 200 by the same manufacturing method as the lid 104 of the container 100 of the above-described embodiment.
  • such containers 300, 400 and the like have a configuration in which, when the ventilation members 308, 408 are deteriorated by use, the deteriorated ventilation members can be replaced with another new ventilation member (member for forming a freshness holding container). can do.
  • Such a replaceable ventilation member (member for forming a freshness holding container) 500 has substantially the same configuration as the ventilation members 308 and 408, and is the same as the lid 104 of the container 100 of the above-described embodiment. Manufactured by the welding apparatus 200 and the like.
  • FIG. 15 is a schematic plan view of a ventilation member (member for forming a freshness holding container) 500
  • FIG. 16 is a schematic diagram for explaining attachment of the ventilation member (member for forming a freshness holding container) 500 to the container. is there.
  • the ventilation member (member for forming a freshness holding container) 500 includes two films 506a and 506b whose ends are ultrasonically bonded.
  • a ventilation path 510 similar to the ventilation paths 310 and 410 of the ventilation members 308 and 408 formed as a non-bonded portion is formed in a joint region between the two films.
  • an adhesive layer 502 is formed on the periphery of the back surface.
  • the ventilation member (member for forming a freshness holding container) 500 covers the opening 406 of the lid 404 detachable from the main body 402 of the container 400 by the adhesive layer 502. It is attached to the opening 406.
  • carbon dioxide, water vapor, and the like generated in the container can be discharged to the outside of the container through the ventilation path while suppressing the intrusion of oxygen from the outside into the container.
  • the material constituting the adhesive layer 502 is not particularly limited, but a known adhesive such as a rubber or acrylic material is preferable. Further, a release paper or a release film may be attached on the adhesive layer 502 as necessary.
  • Such a ventilation member (member for forming a freshness holding container) 500 is used by being attached to a container. When the performance deteriorates due to aging, it is replaced with a new ventilation member (member for forming a freshness holding container) 500.
  • An opening may be formed in a general closed container, and such a ventilation member (member for forming a freshness holding container) 500 may be attached to form a freshness holding container.
  • Example 1 The two films 106a 'and 106b' of the styrene acrylonitrile copolymer having a thickness of 20 ⁇ m were joined by an ultrasonic welding method using the apparatus of FIG. 11 to form an ultrasonic joint 108 ′ having a width of 10 mm (FIG. 17).
  • the oscillation frequency during joining was 20 KHz
  • the oscillation amplitude was 15 ⁇ m
  • the pressing pressure was 250 N
  • the joining time was 0.2 seconds.
  • the air passage is the air passage 110-7 shown in the polygonal air passage of FIG. 7, and the interval between the air passages is 10 mm.
  • the width of the ventilation path is 0.8 mm, the width L of the ventilation path is 24 mm, and the value of L / W is 30. When the air passage was visually observed, the width of the air passage was constant.
  • the film with the air passage was cut into a circle having a diameter of 15 cm as shown in FIG. This was used as the lid 104 '.
  • Example 2 An air passage was formed in the same manner as in Example 1.
  • the shape of the air passage is a curved shape shown in FIG. 3, and the interval between the air passages is 10 mm.
  • the width of the ventilation path is 0.8 mm
  • the width L of the ventilation path is 32 mm
  • the value of L / W is 40.
  • Visual observation of the air passage revealed that the width of the air passage was constant.
  • This film with a ventilation path was cut into a rectangle having a width of 4 cm and a length of 7 cm, and this was used as a ventilation section.
  • a nearly rectangular parallelepiped container with a lid made of 10 cm in length, 20 cm in width and 10 cm in height was prepared.
  • the lid is also made of polyethylene and can be attached and detached, and when the lid is closed, the inside can be sealed.
  • a rectangular hole having a width of 3 cm and a length of 6 cm was formed in the center of the lid, and a ventilation portion was adhered to the hole using an adhesive to form a container. After about 200 g of carrot was put in the container, it was sealed.
  • the container was stored for 2 weeks in an atmosphere of 15 ° C., but the carbon dioxide generated did not swell the lid. In addition, there was no change in the appearance of the carrot inside, and the carrot was edible.
  • Example 3 A ventilation member (member for forming a freshness holding container) shown in FIG. 15 and having a length of 5 cm and a width of 10 cm was formed.
  • the width of the ultrasonic bonding portion 108 by the ultrasonic welding method was set to 10 mm.
  • the shape of the ventilation path 110 was a curve as shown in FIG. 3, the width was 0.8 mm, the width L was 32 mm, the L / W was 40, and the interval between the ventilation paths was 10 mm.
  • An adhesive layer having a width of 5 mm was provided around the rear surface, and release paper was attached to the entire rear surface.
  • Example 2 the same container as in Example 2 was prepared.
  • the release paper of the member for forming a freshness holding container was peeled off, and the member for forming a freshness holding container was stuck so as to cover the hole of the container to form a freshness holding container.
  • Container 102 Main body 104: Lids 106, 106a, 106b: Film 108: Ultrasonic joint (joining area) 110: Ventilation path (non-joined part)

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Abstract

Provided are a freshness holding container which can keep the freshness of contents for a long period of time with very little inflow of oxygen from the outside, a freshness holding container constituting member, and a method for manufacturing the same. A freshness holding container (100) has a ventilation part, wherein the ventilation part has a band-shaped joining region having a width of 5-15 mm in which two ends of the films (106a, 106b) are overlapped and joined, the joining region is configured of a band-shaped ultrasonic joining portion (108) by which two end portions of the film are joined to each other, a non-joining portion in which the overlapping end portions of the films are not joined together is disposed in the ultrasonic joining portion, the non-joining portion constitutes a non-linear air passage (110) that communicates the internal space of the container and the outside of the container, and the air passage has a width W of 0.2 mm ≤ W ≤ 3 mm and a length L of 20 mm ≤ L ≤ 50 mm.

Description

鮮度保持容器、鮮度保持容器構成用部材及びその製造方法Freshness holding container, member for forming freshness holding container, and method of manufacturing the same
　本発明は鮮度保持容器、鮮度保持容器構成用部材及びその製造方法等に関し、詳細には、呼吸や発酵により保存中に二酸化炭素を発生する食品や生花の鮮度低下を抑制することができる鮮度保持容器、鮮度保持容器構成用部材及びその製造方法等に関する。 The present invention relates to a freshness holding container, a member for forming a freshness holding container, a method for producing the same, and the like. More specifically, a freshness holding that can suppress a decrease in freshness of foods and fresh flowers that generate carbon dioxide during storage by respiration or fermentation. The present invention relates to a container, a member for forming a freshness holding container, a method for manufacturing the same, and the like.
　野菜、果物、生花、コーヒー豆、加工食品などのように、呼吸や発酵によって二酸化炭素を発生する食物等を、鮮度を維持した状態で保存することができる包装材、あるいは生花を長期間保存できる包装材へのニーズが高まっている。 Packaging materials that can store food that generates carbon dioxide by respiration or fermentation, such as vegetables, fruits, fresh flowers, coffee beans, processed foods, etc., while maintaining freshness, or fresh flowers can be stored for a long time The need for packaging materials is increasing.
　上記食品等を長期間保存する包装材には、内部で発生した二酸化炭素や水蒸気の排出と、外部からの酸素の流入の防止という、相反する二つ機能が要求される。二酸化炭素や水蒸気の排出が不充分だと内圧が上昇して、包装材が破損する場合があり、また、酸素の流入を防止しないと酸化によって内容物の鮮度が低下するためである。 包装 A packaging material for storing the above foods or the like for a long period of time is required to have two contradictory functions of discharging carbon dioxide and water vapor generated inside and preventing inflow of oxygen from outside. If the discharge of carbon dioxide or water vapor is insufficient, the internal pressure will rise and the packaging material may be damaged, and if the inflow of oxygen is not prevented, the freshness of the contents will decrease due to oxidation.
　このようなニーズに対し、包装品(袋体)の熱シール部に、ストライプ状に配置された非接合部を設け、この非接合部を包装品の外部と連通する流路として利用する青果物包装品が提案されている（特許文献１）。この包装品では、非接合部(流路)が、幅０．１～５ｍｍ、長さ１～２０ｍｍの直線状（即ち細長い長方形）の平面形状を有している。 To meet such needs, a package of fruits and vegetables is provided with a non-joined portion arranged in a stripe shape on the heat-sealed portion of the package (bag), and the non-joined portion is used as a flow path communicating with the outside of the package. A product has been proposed (Patent Document 1). In this package, the non-joined portion (flow path) has a linear (ie, elongated rectangular) planar shape having a width of 0.1 to 5 mm and a length of 1 to 20 mm.
　この包装品では、流路によって、容器の内部が、酸素濃度が低く且つ二酸化炭素濃度が高い状態に維持され、内部の青果物の鮮度が保持される。この包装品では、ある程度の期間、内容物の鮮度を保持できるが、流路の長さが比較的、短いため、外部からの酸素の流入が多く、長期間にわたって青果物の鮮度を保持することが難しかった。 で は In this package, the flow path maintains the inside of the container at a low oxygen concentration and a high carbon dioxide concentration, thereby maintaining the freshness of the fruits and vegetables inside. In this package, the freshness of the contents can be maintained for a certain period of time.However, since the flow path is relatively short, a large amount of oxygen flows in from the outside, and the freshness of the fruits and vegetables can be maintained for a long period of time. was difficult.
　この問題点に対処すべく、斜めに延びる幅３ｍｍ以上の通気口がセンターシール部に設けられた包装品が提案されている（特許文献２）。この構成によれば、通気路の長さを長くすることができる。 対 処 In order to cope with this problem, there has been proposed a packaged product having a diagonally extending vent having a width of 3 mm or more in a center seal portion (Patent Document 2). According to this configuration, the length of the ventilation path can be increased.
特許第３２５９１６６号公報Japanese Patent No. 3259166 特許第６０５２７２９号公報Japanese Patent No. 6052729
　しかしながら、引用文献２の構成では、通路口（流路）の幅が、３ｍｍ以上と比較的に広いため、通気口内で結露が生じ易かった。この結果、結露で生じた水分で通気口の内部空間が塞がれ、通気口中の空気の流れが阻害されて、鮮度保持が十分に行なわれないという問題があった。 However, in the configuration of the cited document 2, since the width of the passage opening (flow passage) is relatively wide, 3 mm or more, dew condensation easily occurs in the ventilation opening. As a result, there is a problem that the internal space of the vent is blocked by the moisture generated by the dew, the flow of air in the vent is obstructed, and the freshness cannot be sufficiently maintained.
　また、特許文献１および特許文献２のいずれの構成においても、通気路はシール部で直線状に延びる構成であるため、通気路が延びる方向におけるシール部の強度が低下してしまう、という問題があった。 Further, in each of the configurations of Patent Literature 1 and Patent Literature 2, since the air passage is configured to extend linearly at the seal portion, there is a problem that the strength of the seal portion in the direction in which the air passage extends is reduced. there were.
　さらに、特許文献１および特許文献２のいずれの構成においても、通気路が熱シールによって形成されているため、形成する通気路の幅および形状を正確に制御することが難しいという問題もあった。 Further, in each of the configurations of Patent Literature 1 and Patent Literature 2, since the air passage is formed by heat sealing, there is a problem that it is difficult to accurately control the width and shape of the formed air passage.
　さらにまた、上記特許文献に記載された袋状の包装品以外の形態の包装材において、同様の問題を解決することが求められていた。 Furthermore, it has been required to solve the same problem in a packaging material in a form other than the bag-shaped packaged product described in the above-mentioned patent document.
　本発明はこのような点に鑑みてなされたものであり、外部からの酸素の流入が非常に少なく、内容物の鮮度を長期間保つことが可能な鮮度保持容器、鮮度保持容器構成用部材及びその製造方法を提供することを目的とする。 The present invention has been made in view of such a point, the inflow of oxygen from the outside is very small, a freshness holding container capable of maintaining the freshness of the contents for a long time, a member for forming a freshness holding container, and It is an object of the present invention to provide a manufacturing method thereof.
　本発明によれば、
　通気部を有する鮮度保持容器であって、
　前記通気部が、フィルムの２つの端部が重ね合わされて接合されている幅５ｍｍ以上１５ｍｍ以下の帯状の接合領域を備え、
　前記接合領域が、前記フィルムの２つの端部同士が接合されている帯状の超音波接合部によって構成され、
　前記超音波接合部に前記重ね合わされたフィルムの端部同士が接合されていない非接合部が配置され、
　前記非接合部が、前記容器の内部空間と前記容器の外部とを連通する非直線状の通気路を構成し、
　前記通気路は幅Ｗが、０．２ｍｍ≦Ｗ≦３ｍｍであり、長さＬが、２０ｍｍ≦Ｌ≦５０ｍｍである、
　ことを特徴とする鮮度保持容器が提供される。 According to the present invention,
A freshness holding container having a ventilation part,
The ventilation portion includes a band-shaped joining region having a width of 5 mm or more and 15 mm or less, where two ends of the film are overlapped and joined,
The bonding region is constituted by a band-shaped ultrasonic bonding portion in which two ends of the film are bonded to each other,
A non-joining portion where the ends of the superposed films are not joined to each other in the ultrasonic joining portion is arranged,
The non-joining portion constitutes a non-linear air passage communicating the internal space of the container and the outside of the container,
The air passage has a width W of 0.2 mm ≦ W ≦ 3 mm and a length L of 20 mm ≦ L ≦ 50 mm.
A freshness preserving container is provided.
　このような構成によれば、
　通気路は、幅Ｗが、０．２ｍｍ≦Ｗ≦３ｍｍであり、長さＬが、２０ｍｍ≦Ｌ≦５０ｍｍであるので、通気路を通しての酸素の侵入を抑制しながら、容器内で発生した二酸化炭素や水蒸気を、通気路を通して速やかに外部に排出することができる。
　また、通気路が非直線状であるため、非接合部によって構成される通気路に起因する接合領域の強度低下が抑制される。 According to such a configuration,
The ventilation path has a width W of 0.2 mm ≦ W ≦ 3 mm and a length L of 20 mm ≦ L ≦ 50 mm. Carbon and water vapor can be quickly discharged to the outside through the ventilation path.
In addition, since the ventilation path is non-linear, a decrease in the strength of the joint region due to the ventilation path formed by the non-joined portions is suppressed.
　本発明の他の好ましい態様によれば、
　前記フィルムが、酸素バリア層を有している。 According to another preferred embodiment of the present invention,
The film has an oxygen barrier layer.
　本発明の他の好ましい態様によれば、
　前記フィルムは、厚さが２０μm以上１００μm以下である。 According to another preferred embodiment of the present invention,
The film has a thickness of 20 μm or more and 100 μm or less.
　本発明の他の好ましい態様によれば、
　前記容器が、容器本体と前記容器本体に取付けられた蓋部とを有し、
　前記容器本体及び蓋部の少なくとも一方に通気部が設けられている。 According to another preferred embodiment of the present invention,
The container has a container body and a lid attached to the container body,
A vent is provided in at least one of the container body and the lid.
　本発明の他の好ましい態様によれば、
　前記蓋部が、前記容器本体に対し着脱自在である。 According to another preferred embodiment of the present invention,
The lid is detachable from the container body.
　このような構成によれば、
　着脱可能な蓋部を有する容器で、内容物の鮮度を長期間保つことが可能となる。 According to such a configuration,
With a container having a removable lid, it is possible to maintain the freshness of the contents for a long time.
　本発明の他の態様によれば、
　鮮度保持用の容器を構成するための鮮度保持容器構成用部材であって、
　通気部を備え、
　前記通気部が、フィルムの２つの端部が重ね合わされて接合されている幅５ｍｍ以上１５ｍｍ以下の帯状の接合領域を備え、
　前記接合領域が、前記フィルムの２つの端部同士が接合されている帯状の超音波接合部によって構成され、前記超音波接合部に前記重ね合わされたフィルムの端部同士が接合されていない非接合部が配置され、
　前記非接合部が、前記容器の内部空間と前記容器の外部とを連通する非直線状の通気路を構成し、
　前記通気路は幅Ｗが、０．２ｍｍ≦Ｗ≦３ｍｍであり、長さＬが、２０ｍｍ≦Ｌ≦５０ｍｍである、
　ことを特徴とする鮮度保持容器構成用部材が提供される。 According to another aspect of the present invention,
A freshness holding container forming member for forming a freshness holding container,
It has a ventilation part,
The ventilation portion includes a band-shaped joining region having a width of 5 mm or more and 15 mm or less, where two ends of the film are overlapped and joined,
The bonding region is constituted by a band-shaped ultrasonic bonding portion in which two ends of the film are bonded to each other, and non-bonding in which the ends of the superimposed film are not bonded to the ultrasonic bonding portion. Department is arranged,
The non-joining portion constitutes a non-linear air passage communicating the internal space of the container and the outside of the container,
The air passage has a width W of 0.2 mm ≦ W ≦ 3 mm and a length L of 20 mm ≦ L ≦ 50 mm.
A member for constituting a freshness holding container is provided.
　このような構成によれば、
　鮮度保持容器構成用部材が通気路を備えた通気部を有しているので、このような鮮度保持容器構成用部材を容器の開口部に取り付けることにより、通気路を通しての酸素の侵入を抑制しながら、容器の内部で発生した二酸化炭素や水蒸気を、通気路を通して速やかに外部に排出することができる鮮度保持容器を構成することができる。 According to such a configuration,
Since the member for forming a freshness holding container has a ventilation portion provided with a ventilation path, the intrusion of oxygen through the ventilation path is suppressed by attaching such a member for forming a freshness holding container to the opening of the container. However, it is possible to constitute a freshness holding container capable of rapidly discharging carbon dioxide and water vapor generated inside the container to the outside through the ventilation path.
　本発明の他の好ましい態様によれば、
　鮮度保持容器構成用部材が前記容器に着脱自在に構成されている。 According to another preferred embodiment of the present invention,
A member for constituting a freshness holding container is detachably attached to the container.
　このような構成によれば、
　鮮度保持容器構成用部材が経年劣化した場合等に、鮮度保持容器構成用部材を交換し、初期の性能を回復させること等が可能となる。 According to such a configuration,
For example, when the member for forming a freshness holding container is deteriorated over time, it is possible to replace the member for forming a freshness holding container and recover the initial performance.
　本発明の他の態様によれば、
　複数枚のフィルムによって形成され通気部を有する鮮度保持容器形成用部材であって、前記通気部が前記フィルムの２つの端部が重ね合わされて接合されている幅５ｍｍ以上１５ｍｍ以下の帯状の接合領域を備え、前記接合領域が、前記フィルムの２つの端部同士が接合されている帯状の超音波接合部によって構成され、前記超音波接合部に、前記重ね合わされたフィルムの端部同士が接合されていない非接合部が配置され、前記非接合部が、前記容器の内部空間と該容器の外部とを連通する非直線状の通気路を構成し、該通気路は幅Ｗが、０．２ｍｍ≦Ｗ≦３ｍｍであり、長さＬが、２０ｍｍ≦Ｌ≦５０ｍｍである鮮度保持容器形成用部材の製造方法であって、
　超音波溶着によって前記超音波接合部を形成するステップを備えている、
　ことを特徴とする鮮度保持容器形成用部材の製造方法が提供される。 According to another aspect of the present invention,
A freshness holding container forming member formed of a plurality of films and having a ventilation portion, wherein the ventilation portion has a width of 5 mm or more and 15 mm or less, in which two ends of the film are overlapped and joined. Wherein the joining region is constituted by a band-like ultrasonic joining portion in which two ends of the film are joined to each other, and the ends of the superimposed film are joined to the ultrasonic joining portion. The non-joined part is arranged, and the non-joined part constitutes a non-linear air passage communicating the internal space of the container and the outside of the container, and the air passage has a width W of 0.2 mm. ≦ W ≦ 3 mm, and the length L is a method for manufacturing a member for forming a freshness holding container, wherein 20 mm ≦ L ≦ 50 mm,
Forming the ultrasonic bonding part by ultrasonic welding,
A method for producing a member for forming a freshness holding container is provided.
　このような構成によれば、
　通気路を通しての酸素の侵入を抑制しながら、容器内で発生した二酸化炭素や水蒸気を、通気路を通して速やかに外部に排出することができる容器を構成するための鮮度保持容器形成用部材を製造することが可能となる。
　また、通気路が非直線状であるため、非接合部によって構成される通気路に起因する接合領域の強度低下が抑制される。 According to such a configuration,
Manufacture a member for forming a freshness holding container for forming a container capable of quickly discharging carbon dioxide and water vapor generated in the container to the outside through the air passage while suppressing intrusion of oxygen through the air passage. It becomes possible.
In addition, since the ventilation path is non-linear, a decrease in the strength of the joint region due to the ventilation path formed by the non-joined portions is suppressed.
　本発明の他の好ましい態様によれば、
　前記超音波接合部を形成するステップが、円板状の超音波溶着ホーンを前記フィルムに対して回転させながら、前記フィルムに連続的に超音波接合部を形成するステップである。 According to another preferred embodiment of the present invention,
The step of forming the ultrasonic bonding part is a step of continuously forming an ultrasonic bonding part in the film while rotating a disk-shaped ultrasonic welding horn with respect to the film.
　このような構成によれば、
　通気路を有する鮮度保持容器形成用部材を大量且つ安価に製造することが可能となる。 According to such a configuration,
It is possible to manufacture a freshness holding container forming member having an air passage in large quantities and at low cost.
　本発明によれば、容器外からの酸素の流入が非常に少なく、内容物の鮮度を長期間保つことが可能な鮮度保持容器、鮮度保持容器構成用部材及びその製造方法が提供される。 According to the present invention, there is provided a freshness holding container, a member for constituting a freshness holding container, and a method for producing the same, which can keep the freshness of the contents for a long period of time with very little inflow of oxygen from outside the container.
本発明の好ましい実施形態の容器１００の模式的な平面図である。It is a schematic plan view of container 100 of a preferred embodiment of the present invention. 図１のII-II線に沿った断面図である。FIG. 2 is a sectional view taken along the line II-II of FIG. 1. 図１の容器の蓋部の通気部の模式的な平面図である。It is a schematic plan view of the ventilation part of the lid part of the container of FIG. 図３のIV－IV線に沿った模式的な断面図である。FIG. 4 is a schematic sectional view taken along the line IV-IV in FIG. 3. 図３のＶ－Ｖ線に沿った模式的な断面図である。FIG. 5 is a schematic cross-sectional view along the line VV in FIG. 3. 非接合部(通気路)の変形例を示す模式的な図面である。It is a schematic diagram which shows the modification of a non-joining part (airway). 非接合部(通気路)の変形例を示す模式的な図面である。It is a schematic diagram which shows the modification of a non-joining part (airway). 非接合部(通気路)の変形例を示す模式的な図面である。It is a schematic diagram which shows the modification of a non-joining part (airway). 非接合部(通気路)の変形例を示す模式的な図面である。It is a schematic diagram which shows the modification of a non-joining part (airway). 非接合部(通気路)の変形例を示す模式的な図面である。It is a schematic diagram which shows the modification of a non-joining part (airway). 超音波溶着法に用いる溶着装置の構成を模式的に示す図面である。It is a drawing which shows typically the structure of the welding apparatus used for an ultrasonic welding method. 図１１の溶着装置の溶着用のホーンの外観を示す模式的な斜視図である。It is a typical perspective view which shows the external appearance of the welding horn of the welding apparatus of FIG. 本発明の他の実施形態の容器の模式的な斜視図である。It is a typical perspective view of the container of other embodiments of the present invention. 本発明の更に別の実施形態の容器の模式的な斜視図である。It is a typical perspective view of the container of another embodiment of the present invention. 通気部材（鮮度保持容器構成用部材)の模式的な平面図である。FIG. 3 is a schematic plan view of a ventilation member (a member for configuring a freshness holding container). 通気部材（鮮度保持容器構成用部材)の容器への取付けを説明する模式図である。It is a schematic diagram explaining attachment of a ventilation member (member for freshness holding container construction) to a container. 本発明の実施例を説明するための模式図である。It is a schematic diagram for explaining the Example of this invention. 本発明の実施例を説明するための模式図である。It is a schematic diagram for explaining the Example of this invention.
　以下、本発明の好ましい実施形態の鮮度保持容器である容器１００の構成を図面に沿って詳細に説明する。図１は、本発明の好ましい実施形態の容器１００の模式的な平面図である。図２は、図１のII-II線に沿った断面図である。本願では、図面中、明確化のため、各要素の寸法の比率は正確に表わされていない。 Hereinafter, the configuration of the container 100 which is a freshness holding container according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic plan view of a container 100 according to a preferred embodiment of the present invention. FIG. 2 is a sectional view taken along the line II-II in FIG. In the present application, the ratio of dimensions of each element is not accurately illustrated in the drawings for clarity.
　本実施態様に容器１００は、例えば、コーヒー、味噌、キムチ等の食品を保存する円柱状の容器であり、上端が開口した箱形の本体(容器本体)１０２と、本体１０２の開口端を密閉状態で覆う蓋部１０４とを備えている。蓋部１０４は、フィルム状部材で構成され、本体１０２の開口端に沿って接着剤等によって本体１０２に接着固定され、容器内部を密閉状態に維持できるように構成されている。 In this embodiment, the container 100 is, for example, a cylindrical container for storing foods such as coffee, miso, and kimchi, and has a box-shaped main body (container main body) 102 having an open upper end and an open end of the main body 102 sealed. And a cover portion 104 that covers in a state. The lid 104 is formed of a film-like member, is adhered and fixed to the main body 102 along the opening end of the main body 102 with an adhesive or the like, and is configured so that the inside of the container can be maintained in a sealed state.
　本実施形態の本体１０２は、上端が開口した箱形の本体であるが、上端が開口した形態であれば、他の形状、例えば、有底円筒形状等でもよい。また、大きさについても制限はない。 The main body 102 of the present embodiment is a box-shaped main body with an open upper end, but may have another shape, for example, a cylindrical shape with a bottom, as long as the upper end is open. There is no limitation on the size.
　また、本実施形態の本体１０２を構成する材料は、気体を透過しない特性を有するものであれば特に制限はない。また、本実施形態の容器１００の本体１０２を構成する材料は、透明であっても不透明であってもよく、意匠性を高めるために表面に印刷を施したものでもよい。本実施形態の容器１００の本体１０２を構成する材料としては、例えば、ポリエチレン、ポリプロピレン、ポリスチレン、ポリエステルなどのポリマー、ガラス、金属などが用いられる。 The material constituting the main body 102 of the present embodiment is not particularly limited as long as it has a property of not allowing gas to permeate. In addition, the material constituting the main body 102 of the container 100 of the present embodiment may be transparent or opaque, and may have a printed surface to enhance the design. As a material constituting the main body 102 of the container 100 of the present embodiment, for example, a polymer such as polyethylene, polypropylene, polystyrene, or polyester, glass, metal, or the like is used.
　また、本実施形態の容器１００の本体１０２は、厚さにも制限はないが、例えば、０．３ｍｍから３ｍｍ程度が好ましい。 The thickness of the main body 102 of the container 100 of the present embodiment is not limited, but is preferably, for example, about 0.3 mm to 3 mm.
　本実施態様に容器１００では、蓋部１０４は、フィルム１０６、詳細には、２枚のフィルム１０６ａと１０６ｂによって構成されている。図１および図２に示されているように、各フィルム１０６ａと１０６ｂは、それぞれが、本体１０２の開口端の面積の約３分の２程度の面積を有し、一端側部同士が重ね合わされて、接合されることにより、本体１０２の開口端全体を覆う多く蓋部１０４を構成している。尚、３枚以上のフィルムで蓋部を形成する構成でもよい。 容器 In the container 100 according to the present embodiment, the lid 104 is constituted by the film 106, specifically, two films 106a and 106b. As shown in FIGS. 1 and 2, each of the films 106a and 106b has an area of about two-thirds of the area of the opening end of the main body 102, and one end side is overlapped. By being joined, a large number of lids 104 are formed to cover the entire open end of the main body 102. The lid may be formed of three or more films.
　図１および図２に示されているように、本実施形態の容器１００では、２枚のフィルム１０６ａ、１０６ｂの一端側部同士が重ね合わされて接合されている接合領域が、帯状の超音波接合部１０８によって構成されている。 As shown in FIGS. 1 and 2, in the container 100 of the present embodiment, a band-shaped ultrasonic bonding is performed in a bonding region where one end portions of two films 106 a and 106 b are overlapped and bonded. It is constituted by a unit 108.
　本実施態様の容器１００で使用されるフィルム１０６は、非晶質のポリマーのフィルムが好ましい。具体的な例として、ポリスチレン、アクリル樹脂、塩化ビニル、ポリカーボネート、スチレンアクリロニトリル共重合体などのフィルムが挙げられる。 フ ィ ル ム The film 106 used in the container 100 of the present embodiment is preferably an amorphous polymer film. Specific examples include films of polystyrene, acrylic resin, vinyl chloride, polycarbonate, styrene acrylonitrile copolymer, and the like.
　フィルム１０６は、異なる素材からなる複数枚のフィルムが積層された積層フィルムでもよい。積層フィルムとしてはポリエステル、ポリエチレンまたはポリプロピレンのフィルムの内側にポリスチレンのフィルムを積層した積層フィルム等が挙げられる。 The film 106 may be a laminated film in which a plurality of films made of different materials are laminated. Examples of the laminated film include a laminated film in which a polystyrene film is laminated inside a polyester, polyethylene or polypropylene film.
　フィルム１０６として、酸素バリアフィルムと他のフィルムを積層したものも用いることができる。酸素バリアフィルムとしては、ビニルアルコールまたは塩化ビニリデンを構成成分として含むポリマーからなるフィルム、シリカ、アルミナ、アルミニウムのいずれかを蒸着したポリマーフィルム、金属箔層などの公知のものを用いることができる。この酸素バリアフィルムの内側にポリスチレンを積層した積層フィルムをフィルム１０６ａ、１０６ｂとして用いることができる。 A film obtained by laminating an oxygen barrier film and another film can also be used as the film 106. As the oxygen barrier film, known films such as a film made of a polymer containing vinyl alcohol or vinylidene chloride as a constituent, a polymer film on which any one of silica, alumina, and aluminum is deposited, and a metal foil layer can be used. A laminated film in which polystyrene is laminated inside the oxygen barrier film can be used as the films 106a and 106b.
　フィルム１０６は、透明であっても不透明であってもよい。内容物が日光によって劣化する場合は不透明な包装フィルムを用いることが好ましい。また、意匠性を高めるために表面に印刷を施したフィルムでもよい。 The film 106 may be transparent or opaque. When the contents deteriorate due to sunlight, it is preferable to use an opaque packaging film. Further, a film whose surface is printed in order to enhance the design property may be used.
　フィルム１０６の厚みは、１０μｍ以上３００μｍ以下、より好ましくは１５μｍ以上２００μｍ以下、更に好ましくは２０μｍ以上１００μｍ以下であることが好ましい。フィルムの厚みが１０μｍ未満の場合、容器の強度が不充分になる場合があり、３００μｍを超えるとコスト上、不利になる場合があるためである。 The thickness of the film 106 is preferably 10 μm or more and 300 μm or less, more preferably 15 μm or more and 200 μm or less, and further preferably 20 μm or more and 100 μm or less. If the thickness of the film is less than 10 μm, the strength of the container may be insufficient, and if it exceeds 300 μm, the cost may be disadvantageous.
　本実施形態の容器１００では、２枚のフィルム１０６ａと１０６ｂの一端側部同士が重ね合わされて、接合されている帯状の超音波接合部１０８は、幅Ｘが５ｍｍ以上１５ｍｍ以下に設定されている。超音波接合部１０８の幅は、６ｍｍ以上１３ｍｍ以下がより好ましく、８ｍｍ以上１１ｍｍ以下がさらに好ましい。 In the container 100 of the present embodiment, the width X of the band-shaped ultrasonic bonding portion 108 in which one end portions of the two films 106a and 106b are overlapped and bonded is set to 5 mm or more and 15 mm or less. . The width of the ultrasonic bonding portion 108 is more preferably 6 mm or more and 13 mm or less, and further preferably 8 mm or more and 11 mm or less.
　超音波接合部１０８の幅を５ｍｍ以上とすることで内容物の保存性を確保でき、１５ｍｍ以下とすることで超音波接合部の強度を確保できる。 保存 Preserving the contents can be ensured by setting the width of the ultrasonic bonding portion 108 to 5 mm or more, and ensuring the strength of the ultrasonic bonding portion by setting the width to 15 mm or less.
　本実施形態の容器１００では、帯状の超音波接合部１０８内に、２枚のフィルム１０６ａと１０６ｂの一端側部同士が接合されていない部分(非接合部分)が複数、所定間隔で形成され、この非接合部が、通気路１１０を構成している。本実施形態の容器１００では、帯状の超音波接合部１０８に複数の通気路１１０が配置された接合領域が、通気部を構成していることになる。 In the container 100 of the present embodiment, a plurality of portions (non-joined portions) where the one end portions of the two films 106a and 106b are not joined to each other are formed at predetermined intervals in the belt-shaped ultrasonic joining portion 108, This non-joined part constitutes the ventilation path 110. In the container 100 of the present embodiment, the joining area where the plurality of ventilation paths 110 are arranged in the belt-like ultrasonic joining section 108 constitutes the ventilation section.
　図３は、蓋部１０４の通気部(接合領域)の模式的な平面図であり、図４は、図３のIV－IV線に沿った模式的な断面図であり、図５は、図３のＶ－Ｖ線に沿った模式的な断面図である。 FIG. 3 is a schematic plan view of a ventilation portion (joining region) of the lid portion 104, FIG. 4 is a schematic cross-sectional view taken along line IV-IV of FIG. 3, and FIG. FIG. 5 is a schematic sectional view taken along line VV of FIG.
　図３に示されているように、本実施形態の容器１００では、通気路１１０は、一定の幅および断面形状を有する、非直線状（詳細には、略Ｓ字状）の平面形状の通気路とされている。 As shown in FIG. 3, in the container 100 of the present embodiment, the ventilation passage 110 has a non-linear (specifically, substantially S-shaped) flat ventilation having a constant width and a cross-sectional shape. It is a road.
　非接合部(通気路)１１０は、幅Ｘの帯状の超音波接合部１０８を横断して、超音波接合部１０８の一端から他端まで延び、蓋部１０４が、容器１００の本体１０２の開口端を密封したとき、容器１００の内部空間と、容器１００の外部とを流体連通する流路となるように構成されている(図５)。 The non-joining portion (air passage) 110 extends from one end of the ultrasonic joining portion 108 to the other end, traversing the band-shaped ultrasonic joining portion 108 having a width X, and the lid portion 104 is connected to the opening of the main body 102 of the container 100. When the end is sealed, it is configured to be a flow path for fluid communication between the internal space of the container 100 and the outside of the container 100 (FIG. 5).
　本実施形態の容器１００では、非接合部（通気路）１１０の幅Ｗは、０．２ｍｍ以上、３ｍｍ以下に設定されている。通気路１１０の幅Ｗは、０．３ｍｍ以上２．５ｍｍ以下がさらに好ましく、０．５ｍｍ以上２．０ｍｍ以下がより好ましい。 で は In the container 100 of the present embodiment, the width W of the non-joined portion (air passage) 110 is set to 0.2 mm or more and 3 mm or less. The width W of the ventilation path 110 is more preferably 0.3 mm or more and 2.5 mm or less, and more preferably 0.5 mm or more and 2.0 mm or less.
　通気路１１０の幅Ｗを０．２ｍｍ以上３．０ｍｍ以下にすることで、容器１００の内部で生成された二酸化炭素や水蒸気の放出と、容器１００の外部からの酸素の侵入防止を両立が可能になる。さらに容器１００を動かした際に通気路１１０の内部で気体が流動し難く、外部から酸素が侵入し難くなる。 By setting the width W of the ventilation path 110 to 0.2 mm or more and 3.0 mm or less, it is possible to simultaneously release carbon dioxide and water vapor generated inside the container 100 and prevent oxygen from entering the outside of the container 100. become. Further, when the container 100 is moved, it is difficult for the gas to flow inside the ventilation path 110, and it is difficult for oxygen to enter from the outside.
　本実施形態の容器１００では、通気路１１０の長さＬは、２０ｍｍ以上５０ｍｍ以下に設定されている。なお、通気路１１０の長さＬとは、通気路１１０の中心軸に沿った通気路１１０の一端から他端までの長さを指す。 で は In the container 100 of the present embodiment, the length L of the ventilation path 110 is set to 20 mm or more and 50 mm or less. Note that the length L of the ventilation path 110 refers to the length from one end to the other end of the ventilation path 110 along the central axis of the ventilation path 110.
　通気路１１０の長さＬは、２２ｍｍ以上４５ｍｍ以下がより好ましく、２５ｍｍ以上４０ｍｍ以下がさらに好ましい。 (4) The length L of the ventilation path 110 is more preferably 22 mm or more and 45 mm or less, and further preferably 25 mm or more and 40 mm or less.
　本実施形態の容器１００では、通気路１１０の長さＬを２０ｍｍ以上５０ｍｍ以下にすることで、容器１００の内部で発生した二酸化炭素や水蒸気の放出と、容器１００の外部からの酸素の侵入防止とが両立させている。 In the container 100 of the present embodiment, by setting the length L of the ventilation path 110 to 20 mm or more and 50 mm or less, release of carbon dioxide and water vapor generated inside the container 100 and prevention of intrusion of oxygen from the outside of the container 100. And are compatible.
　また、本実施形態の容器１００では、通気路１１０の長さＬと幅Ｗの比Ｌ／Ｗは、１０以上２００以下に設定されている。長さＬと幅Ｗの比Ｌ／Ｗが、１０未満になると内容物の保存性が顕著に悪化し、また、この比が２００を超えると通気路の内部に水分が凝縮して酸化炭素の排出が不充分になる場合があるためである。 で は Further, in the container 100 of the present embodiment, the ratio L / W of the length L and the width W of the ventilation path 110 is set to 10 or more and 200 or less. If the ratio L / W of the length L to the width W is less than 10, the storage stability of the contents is remarkably deteriorated, and if the ratio exceeds 200, moisture is condensed in the air passage and carbon dioxide This is because the discharge may be insufficient.
　通気路１１０の長さＬと幅Ｗの比Ｌ／Ｗは、１５以上１５０以下がより好ましく、２０以上１００以下がさらに好ましい。 比 The ratio L / W of the length L to the width W of the ventilation path 110 is more preferably 15 or more and 150 or less, and further preferably 20 or more and 100 or less.
　更に、本実施形態の容器１００では、通気路１１０の間隔は、１ｍｍ以上１００ｍｍ以下に設定されている。通気路１１０の間隔を１ｍｍとすることにより通気路１１０の正確な形状を確保できる。また、３０ｍｍ以下とすることにより、必要な数の通気路１１０を設けることができる。 Furthermore, in the container 100 of the present embodiment, the interval between the ventilation paths 110 is set to 1 mm or more and 100 mm or less. By setting the interval between the ventilation paths 110 to 1 mm, an accurate shape of the ventilation path 110 can be secured. Further, by setting the thickness to 30 mm or less, a required number of ventilation paths 110 can be provided.
　通気路１１０の間隔は、２ｍｍ以上５０ｍｍ以下がより好ましく、３ｍｍ以上１５ｍｍ以下が更に好ましい。 間隔 The distance between the ventilation paths 110 is more preferably 2 mm or more and 50 mm or less, and still more preferably 3 mm or more and 15 mm or less.
　本実施形態の容器１００では、容器１００に形成する通気路１１０の数は１個以上に設定されているが、３以上１００以下が好ましく、５以上７５以下がさらに好ましい。 容器 In the container 100 of the present embodiment, the number of air passages 110 formed in the container 100 is set to one or more, but is preferably 3 or more and 100 or less, more preferably 5 or more and 75 or less.
　特に、保存中に比較的に多量の二酸化炭素を発生させる青果物などを保存する場合は、通気路の数を３以上１００以下、より好ましくは５以上７５以下に設定することで、通気路１１０が水により閉塞されて二酸化炭素の排出が不充分になることを防止でき、好ましい。 In particular, when storing fruits and vegetables that generate a relatively large amount of carbon dioxide during storage, the number of ventilation paths is set to 3 or more and 100 or less, more preferably 5 or more and 75 or less, so that the ventilation paths 110 It is possible to prevent carbon dioxide from being clogged by water and insufficient discharge of carbon dioxide, which is preferable.
　図６乃至図１０は、非直線状の通気路１１０の形状の変形例を示す模式的な図面である。通気路の形状は、上記実施形態の略Ｓ字状に限定されるものではない。例えば、図６に示すような「へ」字状の通気路１１０－６、図７に示すような略「Ｚ」字状の通気路１１０－７、図８に示すような逆「Ｗ」字状の通気路１１０－８、図９に示すような円弧状の通気路１１０－９、図１０に示すような波状の通気路１１０－１０のように、複数の直線部または湾曲部を連結することによって構成されたものでもよい。 FIGS. 6 to 10 are schematic drawings showing modified examples of the shape of the non-linear air passage 110. The shape of the air passage is not limited to the substantially S-shape of the above embodiment. For example, a "V" shaped ventilation path 110-6 as shown in FIG. 6, a substantially "Z" shaped ventilation path 110-7 as shown in FIG. 7, and an inverted "W" shape as shown in FIG. A plurality of linear portions or curved portions are connected like a ventilating passage 110-8, an arcuate venting passage 110-9 as shown in FIG. 9, and a wavy venting passage 110-10 as shown in FIG. It may be constituted by the above.
　さらにまた、本発明の通気路は、上記具体例に限定されず、他の折れ線、曲線形、これらを組み合わせた他の非直線状の通気路でもよい。 Further, the ventilation path of the present invention is not limited to the above specific examples, and may be another polygonal line, a curved line, or another non-linear ventilation path combining these.
　次に、本発明の実施態様の容器１００の通気路を有する蓋部１０４の製造方法について説明する。本実施態様の製造方法は、２枚のフィルム１０６ａ、１０６ｂの側端部を、部分的に超音波溶着法で接合して蓋部１０４となるフィルム部材を形成するものである。 Next, a method of manufacturing the lid portion 104 having the ventilation path of the container 100 according to the embodiment of the present invention will be described. In the manufacturing method of the present embodiment, the side end portions of the two films 106a and 106b are partially joined by an ultrasonic welding method to form a film member to be the lid 104.
　本実施態様の製造方法では、まず、蓋部１０４を構成する細長い２枚のフィルム１０６ａ、１０６ｂを準備する。次いで、２枚のフィルム１０６ａ、１０６ｂの両側端部を重ね合わせる。 In the manufacturing method of the present embodiment, first, two elongated films 106a and 106b constituting the lid 104 are prepared. Next, both side edges of the two films 106a and 106b are overlapped.
　次いで、少なくとも重ね合わされたフィルム１０６ａ、１０６ｂの両側端部を所定温度（摂氏３０度乃至７５度）まで加熱する。加熱は、加熱ロール、赤外線加熱等の方法によって行なわれるのが好ましい。 Next, at least the both ends of the superposed films 106a and 106b are heated to a predetermined temperature (30 to 75 degrees Celsius). Heating is preferably performed by a method such as a heating roll or infrared heating.
　次いで、加熱したフィルムの除電を行なう。加熱されたフィルムは弾性率が低下してしなやかになるため、搬送ロールなどの物体に接触した時に接触面積が増大する等の理由により、帯電しやすい。この帯電を排除するために、超音波溶着の前に除電をすることが好ましい。 Next, the heated film is neutralized. Since the heated film has a reduced elastic modulus and is supple, it is easily charged due to an increase in the contact area when the film contacts an object such as a transport roll. In order to eliminate this charge, it is preferable to remove the charge before the ultrasonic welding.
　具体的には、イオン風、除電ブラシ等を用いて除電が行なわれる。除電後のフィルムの表面電位が、１ｋｖ以下となるように除電が行なわれるのが好ましい。表面電位の測定は、例えばトレック・ジャパン株式会社製の表面電位計ＭＯＤＥＬ３４１Ｂで測定することができる。除電を行なうことにより、このような帯電に起因する埃の付着が抑制される。 Specifically, static elimination is performed using an ion wind, a static elimination brush or the like. It is preferable that static elimination is performed so that the surface potential of the film after static elimination becomes 1 kv or less. The surface potential can be measured by, for example, a surface potential meter MODEL341B manufactured by Trek Japan. By performing static elimination, adhesion of dust due to such charging is suppressed.
　除電後のフィルムの表面電位はゴミ付き防止の観点から絶対値が１ｋＶ以下であることが好ましい。表面電位の測定は、例えばトレック・ジャパン株式会社製の表面電位計ＭＯＤＥＬ３４１Ｂで測定することができる。 表面 The surface potential of the film after static elimination preferably has an absolute value of 1 kV or less from the viewpoint of preventing dust. The surface potential can be measured by, for example, a surface potential meter MODEL341B manufactured by Trek Japan.
　次いで、重ね合わされているフィルム１０６ａ、１０６ｂの側端部をヒートシール等によって接合し、重ね合わされたフィルム１０６ａ、１０６ｂの側端部を相対位置がずれないように仮留めする。この仮留めによって、重ね合わされたフィルム１０６ａ、１０６ｂの相対位置ずれが防止される。 Next, the side ends of the superposed films 106a and 106b are joined by heat sealing or the like, and the side ends of the superposed films 106a and 106b are temporarily fixed so that their relative positions do not shift. By this temporary fastening, the relative positional deviation of the superposed films 106a and 106b is prevented.
　次に、超音波溶着法によって、フィルム１０６ａ、１０６ｂの側端部に、超音波接合部１０８による接合部を形成する。 (4) Next, a joining portion by the ultrasonic joining portion 108 is formed on the side end portions of the films 106a and 106b by an ultrasonic welding method.
　図１１は、超音波溶着法に用いる溶着装置２００の構成を模式的に示す図面である。
　図１１に示されているように、溶着装置２００は、５０Ｈｚまたは６０Ｈｚの商用電気を１５～７０ＫＨｚ程度の高周波信号に変換する超音波発振機２０２と、この信号を機械的振動に変換するコンバータ２０４と、この機械的振動を増幅するブースター２０６と、増幅された振動を溶着対象(フィルム１０６ａ、１０６ｂ)に伝えるホーン２０８と、ホーン２０８との間でフィルムを挟持する受け座２１０と、を備えている。受け座２１０は温度を制御できるものであることが好ましい。 FIG. 11 is a drawing schematically showing a configuration of a welding apparatus 200 used for the ultrasonic welding method.
As shown in FIG. 11, the welding apparatus 200 includes an ultrasonic oscillator 202 for converting 50 Hz or 60 Hz commercial electricity into a high frequency signal of about 15 to 70 KHz, and a converter 204 for converting the signal into mechanical vibration. A booster 206 for amplifying the mechanical vibration, a horn 208 for transmitting the amplified vibration to a welding target (the films 106a and 106b), and a receiving seat 210 for holding the film between the horn 208. I have. It is preferable that the receiving seat 210 can control the temperature.
　図１２は、図１１の溶着装置の溶着用のホーン２０８の外観を示す模式的な斜視図である。本実施形態の溶着装置２００は、ホーン２０８が、図１２に示されているような円板形状を有するロータリ式の溶着装置である。円板状のホーン２０８の直径は５～３０ｃｍ程度であり、厚みは０．５～１．５ｃｍ程度である。 FIG. 12 is a schematic perspective view showing the appearance of the welding horn 208 of the welding device of FIG. The welding device 200 of the present embodiment is a rotary welding device in which the horn 208 has a disk shape as shown in FIG. The diameter of the disk-shaped horn 208 is about 5 to 30 cm, and the thickness is about 0.5 to 1.5 cm.
　円板形状のホーン２０８の外周面２０８ａには、蓋部１０４の通気路１１０の略Ｓ字形状に対応したＳ字状の溝部２０８ｂが形成され、この溝部２０８ｂにより非接合部(通気路１１０)が形成される。 On the outer peripheral surface 208a of the disc-shaped horn 208, an S-shaped groove 208b corresponding to the substantially S-shape of the air passage 110 of the lid 104 is formed, and the non-joined portion (air passage 110) is formed by the groove 208b. Is formed.
　このロータリ式の溶着装置２００を使用した溶着作業では、フィルム１０６ａ、１０６ｂに、連続的に超音波融着部８が形成される。具体的には、ホーン２０８と受け座２１０の間に、重ね合わされたフィルム１０６ａ、１０６ｂを挟持した状態で、円板状のホーン２０８を回転させ、長尺状のフィルム１０６ａ、１０６ｂの側端部に、複数の非接合部(通気路１１０）が内部に配置された超音波融着部(接合部)１０８を帯状に形成していく。 In the welding operation using the rotary welding device 200, the ultrasonic welding portion 8 is continuously formed on the films 106a and 106b. More specifically, the disc-shaped horn 208 is rotated with the laminated films 106a and 106b sandwiched between the horn 208 and the receiving seat 210, and the side ends of the long films 106a and 106b. Next, an ultrasonic welding portion (joining portion) 108 in which a plurality of non-joining portions (air passages 110) are disposed is formed in a belt shape.
　溶着作業で使用する超音波の振幅は通常１．５μｍ以上１００μｍ以下であるが、非接合部の幅Wを正確に制御する観点から２μｍ以上、１５μｍ以下、より好ましくは２．５μm以上１０μm以下であることがあることが好ましい。 The amplitude of the ultrasonic wave used in the welding operation is usually 1.5 μm or more and 100 μm or less, but from the viewpoint of accurately controlling the width W of the non-joined portion is 2 μm or more, 15 μm or less, more preferably 2.5 μm or more and 10 μm or less. It is preferred that there be.
　溶着は、ホーン２０８の先端を、重ね合わされたフィルム１０６ａ、１０６ｂの側端に押し付けた状態で、重ね合わされたフィルム１０６ａ、１０６ｂに超音波振動を与えることにより行われる。この時、溶着時間は通常０．０５秒以上１秒以下とする。この時間が０．０５秒未満の場合、袋体の強度が不充分になる場合があり、１秒を超えると生産効率が低下する場合がある。 Welding is performed by applying ultrasonic vibration to the superposed films 106a and 106b while pressing the tip of the horn 208 against the side edges of the superposed films 106a and 106b. At this time, the welding time is usually 0.05 seconds or more and 1 second or less. If the time is less than 0.05 seconds, the strength of the bag may be insufficient, and if it exceeds 1 second, the production efficiency may be reduced.
　ホーン２０８の押しつけ圧は１００から５００Ｎ程度が好ましい。押しつけ圧が１００Ｎ未満の場合、溶着部の強度が低下する場合があり、５００Ｎを超えると装置に過大な荷重がかかることによる不具合が発生する場合がある。 押 し The pressing pressure of the horn 208 is preferably about 100 to 500N. If the pressing pressure is less than 100 N, the strength of the welded portion may decrease, and if it exceeds 500 N, a problem may occur due to an excessive load applied to the device.
　このようなホーンを用いる製造方法では、重ね合わされた２枚のフィルム１０６ａ、１０６ｂの側端部に、ホーンの外周部が連続的に接して超音波溶着が行なわれるので、超音波溶着を連続的に行うことが可能で、効率よい加工を行うことができる。 In the manufacturing method using such a horn, the outer peripheral portions of the horns are continuously in contact with the side end portions of the two superposed films 106a and 106b and ultrasonic welding is performed. And efficient processing can be performed.
　このようにして、接合された側端部に通気路が形成された２枚のフィルム１０６ａ、１０６ｂは、適宜、切断され、接着剤等で、本体１０２の開口端に接着固定される蓋部１０４となる。 In this way, the two films 106a and 106b having the air passage formed at the joined side end are appropriately cut, and the lid 104 is adhered and fixed to the opening end of the main body 102 with an adhesive or the like. It becomes.
　上記実施形態の容器１００は、上端が開口する本体１０２の開口端に接着された蓋部１０４に通気部が設けられた容器であったが、本発明は、図１３、図１４に示されているような、蓋部が本体に着脱可能な構成とされた容器の本体または蓋部の少なくとも一方に通気部が設けられた構成でもよい。 The container 100 of the above embodiment is a container in which a ventilation portion is provided in a lid portion 104 bonded to an opening end of a main body 102 having an open upper end. The present invention is illustrated in FIGS. In this case, a configuration may be adopted in which a ventilation portion is provided on at least one of the main body and the lid portion of the container in which the lid portion is configured to be detachable from the main body.
　図１３は、本発明の他の実施形態の容器３００の模式的な斜視図であり、図１４は、さらに別の実施形態の容器４００の模式的な斜視図である。 FIG. 13 is a schematic perspective view of a container 300 according to another embodiment of the present invention, and FIG. 14 is a schematic perspective view of a container 400 according to still another embodiment.
　図１３に示されている鮮度保持用の容器３００は、上端が開口した有底円筒状の本体を３０２と、本体の３０２の上端に開口に着脱自在に取付けられる蓋部３０４とを備えている。この容器３００では、蓋部３０４も剛性を有する材料で構成されるのが好ましい。 The container 300 for keeping freshness shown in FIG. 13 includes a bottomed cylindrical main body 302 having an open upper end, and a lid 304 detachably attached to the upper end of the main body 302 at the opening. . In this container 300, it is preferable that the lid 304 is also made of a rigid material.
　この容器３００では、本体３０２の側壁に開口部３０６が形成され、この開口部３０６に、フィルムによって形成された通気部材３０８が密封状態で取付けられている。通気部材３０８は、側端部が超音波融着により接合された２枚のフィルム等から形成され、接合領域(超音波接合部)に複数の通気路が配置された通気部を備えている。 In the container 300, an opening 306 is formed in a side wall of the main body 302, and a ventilation member 308 formed of a film is attached to the opening 306 in a sealed state. The ventilation member 308 is formed of two films or the like whose side ends are joined by ultrasonic fusion, and has a ventilation section in which a plurality of ventilation paths are arranged in a joint region (ultrasonic joint).
　詳細には、通気部材３０８は、上記実施形態の容器１００の蓋部１０４と同様の構成を有し、蓋部１０４の通気路１１０と同様のフィルムの非接合部による通気路３１０を有する通気部を備えている。このような構成によって、容器３００内への外部からの酸素の侵入を抑制しつつ、容器内で発生した二酸化炭素、水蒸気等を容器外に排出することが可能となる。 In detail, the ventilation member 308 has the same configuration as the lid 104 of the container 100 of the above-described embodiment, and has a ventilation path 310 formed by a non-joined portion of a film similar to the ventilation path 110 of the lid 104. It has. With such a configuration, carbon dioxide, water vapor, and the like generated in the container can be discharged to the outside of the container while suppressing intrusion of oxygen from the outside into the container 300.
　また、図１４に示されている鮮度保持用の容器４００は、上端が開口した有底円筒状の本体４０２と、本体４０２の上端に開口に着脱自在に取付けられる蓋部４０４とを備えている。この容器４００でも、蓋部４０４も剛性を有する材料で構成されるのが好ましい。 Further, the container 400 for maintaining freshness shown in FIG. 14 includes a bottomed cylindrical main body 402 having an open upper end, and a lid portion 404 detachably attached to the upper end of the main body 402. . Also in this container 400, it is preferable that the lid portion 404 is also made of a rigid material.
　この容器３００では、蓋部４０４に開口部４０６が形成され、この開口部４０６に、フィルムによって形成された通気部材４０８が密封状態で取付けられている。通気部材４０８は、上記実施形態の通気部材３０８と同様に、蓋部１０４の通気路１１０と同様のフィルムの非接合部による通気路４１０を有する通気部を備えている。このような構成によって、容器４００内への外部からの酸素の侵入を抑制しつつ、容器内で発生した二酸化炭素、水蒸気等を容器外に排出することが可能となる。 In the container 300, an opening 406 is formed in the lid 404, and a ventilation member 408 formed of a film is attached to the opening 406 in a sealed state. Like the ventilation member 308 of the above-described embodiment, the ventilation member 408 includes a ventilation section having a ventilation path 410 formed by a non-joined portion of a film similar to the ventilation path 110 of the lid 104. With such a configuration, carbon dioxide, water vapor, and the like generated in the container can be discharged to the outside of the container while suppressing intrusion of oxygen from the outside into the container 400.
　これら通気部材３０８、４０８も、例えば、上述した実施形態の容器１００の蓋部１０４と同様の製造方法でロータリ式の溶着装置２００を用いて製造される。 通 気 The ventilation members 308 and 408 are also manufactured using the rotary welding device 200 by the same manufacturing method as the lid 104 of the container 100 of the above-described embodiment.
　また、このような容器３００、４００等は、通気部材３０８、４０８が使用により劣化したとき、劣化した通気部材を、別体の新しい通気部材（鮮度保持容器構成用部材)と交換可能な構成とすることができる。 Further, such containers 300, 400 and the like have a configuration in which, when the ventilation members 308, 408 are deteriorated by use, the deteriorated ventilation members can be replaced with another new ventilation member (member for forming a freshness holding container). can do.
　このような交換可能な通気部材（鮮度保持容器構成用部材)５００は、上記通気部材３０８、４０８と実質的に同一の構成を備え、上記実施形態の容器１００の蓋部１０４と同様にロータリ式の溶着装置２００等で製造される。 Such a replaceable ventilation member (member for forming a freshness holding container) 500 has substantially the same configuration as the ventilation members 308 and 408, and is the same as the lid 104 of the container 100 of the above-described embodiment. Manufactured by the welding apparatus 200 and the like.
　図１５は、通気部材（鮮度保持容器構成用部材)５００の模式的な平面図であり、図１６は、通気部材（鮮度保持容器構成用部材)５００の容器への取付けを説明する模式図である。
　通気部材（鮮度保持容器構成用部材)５００は、端部が超音波接合された２枚のフィルム５０６ａ、５０６ｂ等からなる。２枚のフィルムの接合領域には、非接合部として形成された、上記通気部材３０８、４０８の通気路３１０、４１０と同様の通気路５１０が形成されている。さら、図１５に示されているように、裏面の周縁に粘着層５０２が形成されている。 FIG. 15 is a schematic plan view of a ventilation member (member for forming a freshness holding container) 500, and FIG. 16 is a schematic diagram for explaining attachment of the ventilation member (member for forming a freshness holding container) 500 to the container. is there.
The ventilation member (member for forming a freshness holding container) 500 includes two films 506a and 506b whose ends are ultrasonically bonded. A ventilation path 510 similar to the ventilation paths 310 and 410 of the ventilation members 308 and 408 formed as a non-bonded portion is formed in a joint region between the two films. Further, as shown in FIG. 15, an adhesive layer 502 is formed on the periphery of the back surface.
　そして、通気部材（鮮度保持容器構成用部材)５００は、この粘着層５０２によって、図１６に示されているように容器４００の本体４０２に着脱自在の蓋部４０４の開口部４０６を覆うように開口部４０６に取り付けられる。この結果、容器内への外部からの酸素の侵入を抑制しつつ、容器内で発生した二酸化炭素、水蒸気等を、通気路を通して容器外に排出することが可能となる。 Then, as shown in FIG. 16, the ventilation member (member for forming a freshness holding container) 500 covers the opening 406 of the lid 404 detachable from the main body 402 of the container 400 by the adhesive layer 502. It is attached to the opening 406. As a result, carbon dioxide, water vapor, and the like generated in the container can be discharged to the outside of the container through the ventilation path while suppressing the intrusion of oxygen from the outside into the container.
　粘着層５０２を構成する物質については特に制限はないが、ゴム系やアクリル系などの公知の粘着材が好ましい。また、必要に応じて、粘着層５０２上に離形紙または離形フィルムを添付してもよい。 物質 The material constituting the adhesive layer 502 is not particularly limited, but a known adhesive such as a rubber or acrylic material is preferable. Further, a release paper or a release film may be attached on the adhesive layer 502 as necessary.
　このような通気部材（鮮度保持容器構成用部材)５００は、容器に取付けられて使用され、経年変化によって性能が低下すると、新しい通気部材（鮮度保持容器構成用部材)５００と交換される。 通 気 Such a ventilation member (member for forming a freshness holding container) 500 is used by being attached to a container. When the performance deteriorates due to aging, it is replaced with a new ventilation member (member for forming a freshness holding container) 500.
　一般的な密閉容器に開口を形成し、このような通気部材（鮮度保持容器構成用部材)５００を貼りつけて、鮮度保持容器を構成してもよい。 (4) An opening may be formed in a general closed container, and such a ventilation member (member for forming a freshness holding container) 500 may be attached to form a freshness holding container.
　本発明は、前記実施形態に限定されることなく、特許請求の範囲に記載された技術的思想の範囲内で種々の変更、変形が可能である。 The present invention is not limited to the above embodiment, and various changes and modifications can be made within the scope of the technical concept described in the claims.
　以下に実施例を挙げて本発明をさらに詳しく説明する。 The present invention will be described in more detail with reference to the following examples.
(実施例１)
　厚さ２０μｍのスチレンアクリロニトリル共重合体の２枚のフィルム１０６ａ’、１０６ｂ’を、図１１の装置を用いた超音波溶着法により接合し、幅１０ｍｍの超音波接合部１０８’を形成した(図１７)。接合時の発振振動数は２０ＫＨｚ、振動振幅は１５μｍ、押しつけ圧は２５０Ｎ、接合時間は０．２秒とした。 (Example 1)
The two films 106a 'and 106b' of the styrene acrylonitrile copolymer having a thickness of 20 μm were joined by an ultrasonic welding method using the apparatus of FIG. 11 to form an ultrasonic joint 108 ′ having a width of 10 mm (FIG. 17). The oscillation frequency during joining was 20 KHz, the oscillation amplitude was 15 μm, the pressing pressure was 250 N, and the joining time was 0.2 seconds.
　通気路は、図７の折れ線型の通気路に示す通気路１１０－７であり、通気路どうしの間隔は１０ｍｍである。また、通気路の幅は０．８ｍｍ、通気路の幅Ｌは２４ｍｍ、Ｌ／Ｗの値は３０である。通気路を目視観察したところ、通気路の幅は一定であった。この通気路つきのフィルムを図１８に示すように直径１５ｃｍの円形に切り出した。これを蓋部１０４’とした。 The air passage is the air passage 110-7 shown in the polygonal air passage of FIG. 7, and the interval between the air passages is 10 mm. The width of the ventilation path is 0.8 mm, the width L of the ventilation path is 24 mm, and the value of L / W is 30. When the air passage was visually observed, the width of the air passage was constant. The film with the air passage was cut into a circle having a diameter of 15 cm as shown in FIG. This was used as the lid 104 '.
　一方、直径１５ｃｍ、深さ１０ｃｍのほぼ円筒形のポリプロピレン製の本体に約８００ｇのニンジンを入れた後、接着剤を用いて蓋部１０４’を本体の開口に接着した。
　この容器を１５℃の雰囲気で２週間保存したが発生した二酸化炭素で蓋部１０４’が膨らむことはなかった。また、内部のニンジンの外見上の変化もなく、可食状態であった。 On the other hand, after about 800 g of carrot was put into a substantially cylindrical polypropylene body having a diameter of 15 cm and a depth of 10 cm, the lid 104 ′ was adhered to the opening of the body using an adhesive.
This container was stored in an atmosphere at 15 ° C. for two weeks, but the carbon dioxide generated did not swell the lid 104 ′. In addition, there was no change in the appearance of the carrot inside, and the carrot was edible.
(実施例２)
　実施例１と同様に通気路を形成した。通気路の形状は、図３に示す曲線状であり、通気路どうしの間隔は１０ｍｍである。また、通気路の幅は０．８ｍｍ、通気路の幅Ｌは３２ｍｍ、Ｌ／Ｗの値は４０である。通気路を目視観察したところ通気路の幅は一定であった。この通気路つきのフィルムを幅４ｃｍ、長さ７ｃｍの長方形に切り出し、これを通気部とした。 (Example 2)
An air passage was formed in the same manner as in Example 1. The shape of the air passage is a curved shape shown in FIG. 3, and the interval between the air passages is 10 mm. The width of the ventilation path is 0.8 mm, the width L of the ventilation path is 32 mm, and the value of L / W is 40. Visual observation of the air passage revealed that the width of the air passage was constant. This film with a ventilation path was cut into a rectangle having a width of 4 cm and a length of 7 cm, and this was used as a ventilation section.
　一方、縦１０ｃｍ、横２０cm、高さ１０ｃｍのほぼ直方体のポリエチレン製の蓋付き容器を準備した。蓋もポリエチレン製で脱着可能で、蓋をした時には内部を密封できるものである。この蓋の中央に幅３ｃｍ、長さ６ｃｍの長方形の孔部を形成し、この孔部に粘着剤を用いて通気部を接着し容器とした。この容器の内部に約２００ｇのニンジンを入れた後、密封した。 Meanwhile, a nearly rectangular parallelepiped container with a lid made of 10 cm in length, 20 cm in width and 10 cm in height was prepared. The lid is also made of polyethylene and can be attached and detached, and when the lid is closed, the inside can be sealed. A rectangular hole having a width of 3 cm and a length of 6 cm was formed in the center of the lid, and a ventilation portion was adhered to the hole using an adhesive to form a container. After about 200 g of carrot was put in the container, it was sealed.
　この容器を１５℃の雰囲気で２週間保存したが発生した二酸化炭素で蓋部が膨らむことはなかった。また、内部のニンジンの外見上の変化もなく、可食状態であった。 容器 The container was stored for 2 weeks in an atmosphere of 15 ° C., but the carbon dioxide generated did not swell the lid. In addition, there was no change in the appearance of the carrot inside, and the carrot was edible.
(実施例３)
　縦５ｃｍ、横１０ｃｍの、図１５に示す通気部材（鮮度保持容器構成用部材)を形成した。超音波溶着法による超音波接合部１０８の幅を１０ｍｍとした。通気路１１０は、形状を図３に示す曲線状、幅を０．８ｍｍ、幅Ｌを３２ｍｍとし、Ｌ／Ｗが４０、通気路どうしの間隔が１０ｍｍとなるようにした。また、裏面の周囲部には幅５ｍｍの粘着層を設け、裏面全面に離形紙を添付した。 (Example 3)
A ventilation member (member for forming a freshness holding container) shown in FIG. 15 and having a length of 5 cm and a width of 10 cm was formed. The width of the ultrasonic bonding portion 108 by the ultrasonic welding method was set to 10 mm. The shape of the ventilation path 110 was a curve as shown in FIG. 3, the width was 0.8 mm, the width L was 32 mm, the L / W was 40, and the interval between the ventilation paths was 10 mm. An adhesive layer having a width of 5 mm was provided around the rear surface, and release paper was attached to the entire rear surface.
　一方、実施例２と同様の容器を準備した。鮮度保持容器構成用部材の離形紙を剥離し、容器の孔部をふさぐように、鮮度保持容器構成用部材を貼り付け鮮度保持容器を形成した。 Meanwhile, the same container as in Example 2 was prepared. The release paper of the member for forming a freshness holding container was peeled off, and the member for forming a freshness holding container was stuck so as to cover the hole of the container to form a freshness holding container.
　この容器内に約２００ｇのニンジンを入れた後、密封した。
　この容器を１５℃の雰囲気で２週間保存したが発生した二酸化炭素で蓋部が膨らむことはなかった。また、内部のニンジンの外見上の変化もなく、可食状態であった。 After about 200 g of carrot was put in this container, it was sealed.
The container was stored for 2 weeks in an atmosphere of 15 ° C., but the carbon dioxide generated did not cause the lid to swell. In addition, there was no change in the appearance of the carrot inside, and the carrot was edible.
１００：容器
１０２：本体
１０４：蓋部
１０６、１０６ａ、１０６ｂ：フィルム
１０８：超音波接合部(接合領域)
１１０：通気路(非接合部) 100: Container 102: Main body 104: Lids 106, 106a, 106b: Film 108: Ultrasonic joint (joining area)
110: Ventilation path (non-joined part)

Claims (9)

  1. 　通気部を有する鮮度保持容器であって、
    　前記通気部が、フィルムの２つの端部が重ね合わされて接合されている幅５ｍｍ以上１５ｍｍ以下の帯状の接合領域を備え、
    　前記接合領域が、前記フィルムの２つの端部同士が接合されている帯状の超音波接合部によって構成され、
    　前記超音波接合部に前記重ね合わされたフィルムの端部同士が接合されていない非接合部が配置され、
    　前記非接合部が、前記容器の内部空間と前記容器の外部とを連通する非直線状の通気路を構成し、
    　前記通気路は幅Ｗが、０．２ｍｍ≦Ｗ≦３ｍｍであり、長さＬが、２０ｍｍ≦Ｌ≦５０ｍｍである、
    　ことを特徴とする鮮度保持容器。     A freshness holding container having a ventilation part,
    The ventilation portion includes a band-shaped joining region having a width of 5 mm or more and 15 mm or less, where two ends of the film are overlapped and joined,
    The bonding region is constituted by a band-shaped ultrasonic bonding portion in which two ends of the film are bonded to each other,
    A non-joining portion where the ends of the superposed films are not joined to each other in the ultrasonic joining portion is arranged,
    The non-joining portion constitutes a non-linear air passage communicating the internal space of the container and the outside of the container,
    The air passage has a width W of 0.2 mm ≦ W ≦ 3 mm and a length L of 20 mm ≦ L ≦ 50 mm.
    A freshness holding container characterized by the above-mentioned.
  2. 　前記フィルムが、酸素バリア層を有している、
    　請求項１に記載の鮮度保持容器。     The film has an oxygen barrier layer,
    The freshness holding container according to claim 1.
  3. 　前記フィルムは、厚さが２０μm以上１００μm以下である、
    　請求項１または２に記載の鮮度保持容器。     The film has a thickness of 20 μm or more and 100 μm or less,
    The freshness holding container according to claim 1.
  4. 　前記容器が、容器本体と前記容器本体に取付けられた蓋部とを有し、
    　前記容器本体及び蓋部の少なくとも一方に通気部が設けられている、
    　請求項１から３のいずれか１項に記載の鮮度保持容器。     The container has a container body and a lid attached to the container body,
    A ventilation portion is provided on at least one of the container body and the lid portion,
    The freshness holding container according to any one of claims 1 to 3.
  5. 　前記蓋部が、前記容器本体に対し着脱自在である、
    　請求項４に記載の鮮度保持容器。     The lid is detachable from the container body,
    The freshness holding container according to claim 4.
  6. 　鮮度保持用の容器を構成するための鮮度保持容器構成用部材であって、
    　通気部を備え、
    　前記通気部が、フィルムの２つの端部が重ね合わされて接合されている幅５ｍｍ以上１５ｍｍ以下の帯状の接合領域を備え、
    　前記接合領域が、前記フィルムの２つの端部同士が接合されている帯状の超音波接合部によって構成され、前記超音波接合部に前記重ね合わされたフィルムの端部同士が接合されていない非接合部が配置され、
    　前記非接合部が、前記容器の内部空間と前記容器の外部とを連通する非直線状の通気路を構成し、
    　前記通気路は幅Ｗが、０．２ｍｍ≦Ｗ≦３ｍｍであり、長さＬが、２０ｍｍ≦Ｌ≦５０ｍｍである、
    　ことを特徴とする鮮度保持容器構成用部材。     A freshness holding container forming member for forming a freshness holding container,
    It has a ventilation part,
    The ventilation portion includes a band-shaped joining region having a width of 5 mm or more and 15 mm or less, where two ends of the film are overlapped and joined,
    The bonding region is constituted by a band-shaped ultrasonic bonding portion in which two ends of the film are bonded to each other, and non-bonding in which the ends of the superimposed film are not bonded to the ultrasonic bonding portion. Department is arranged,
    The non-joining portion constitutes a non-linear air passage communicating the internal space of the container and the outside of the container,
    The air passage has a width W of 0.2 mm ≦ W ≦ 3 mm and a length L of 20 mm ≦ L ≦ 50 mm.
    A member for forming a freshness holding container, comprising:
  7. 　前記容器に着脱自在に構成されている、
    　請求項６に記載の鮮度保持容器形成用部材。     The container is configured to be detachable,
    The member for forming a freshness holding container according to claim 6.
  8. 　複数枚のフィルムによって形成され通気部を有する鮮度保持容器形成用部材であって、前記通気部が前記フィルムの２つの端部が重ね合わされて接合されている幅５ｍｍ以上１５ｍｍ以下の帯状の接合領域を備え、前記接合領域が、前記フィルムの２つの端部同士が接合されている帯状の超音波接合部によって構成され、前記超音波接合部に、前記重ね合わされたフィルムの端部同士が接合されていない非接合部が配置され、前記非接合部が、前記容器の内部空間と該容器の外部とを連通する非直線状の通気路を構成し、該通気路は幅Ｗが、０．２ｍｍ≦Ｗ≦３ｍｍであり、長さＬが、２０ｍｍ≦Ｌ≦５０ｍｍである鮮度保持容器形成用部材の製造方法であって、
    　超音波溶着によって前記超音波接合部を形成するステップを備えている、
    　ことを特徴とする鮮度保持容器形成用部材の製造方法。     A member for forming a freshness holding container formed of a plurality of films and having a ventilation portion, wherein the ventilation portion has a band-shaped joining region having a width of 5 mm or more and 15 mm or less, wherein two ends of the film are overlapped and joined. Wherein the joining region is constituted by a band-like ultrasonic joining portion in which two ends of the film are joined to each other, and the ends of the superimposed film are joined to the ultrasonic joining portion. The non-joined part is arranged, and the non-joined part constitutes a non-linear air passage communicating the internal space of the container and the outside of the container, and the air passage has a width W of 0.2 mm. ≦ W ≦ 3 mm, and the length L is a method for manufacturing a member for forming a freshness holding container, wherein 20 mm ≦ L ≦ 50 mm,
    Forming the ultrasonic bonding part by ultrasonic welding,
    A method for producing a member for forming a freshness holding container, comprising:
  9. 　前記超音波接合部を形成するステップが、円板状の超音波溶着ホーンを前記フィルムに対して回転させながら、前記フィルムに連続的に超音波接合部を形成するステップである、
    　請求項８に記載の鮮度保持容器形成用部材の製造方法。     The step of forming the ultrasonic bonding portion is a step of continuously forming an ultrasonic bonding portion on the film while rotating a disk-shaped ultrasonic welding horn with respect to the film,
    A method for manufacturing the member for forming a freshness holding container according to claim 8.
PCT/JP2019/025914 2018-07-03 2019-06-28 Freshness holding container, freshness holding container constituent member and method for manufacturing same WO2020009036A1 (en)

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JP2018-126565 2018-07-03

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JP2020147376A (en) * 2020-06-08 2020-09-17 株式会社Ｗ Container for reserving food

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JPS62174039U (en) * 1986-04-25 1987-11-05
JPH06255692A (en) * 1993-02-24 1994-09-13 Dainippon Printing Co Ltd Fermented soybean container
JPH0840466A (en) * 1994-07-27 1996-02-13 Nidaiki Kk Air-permeable bag
JPH11240579A (en) * 1998-02-25 1999-09-07 Nidaiki Kk Degasifying functional film provided in bag or container
JP2001354210A (en) * 2000-06-09 2001-12-25 Fujimori Kogyo Co Ltd Sealing method, sealing apparatus and bag body
JP2003081352A (en) * 2001-09-10 2003-03-19 Risu Pack Co Ltd Label having gas vent function for packaging container
WO2009090674A2 (en) * 2008-01-17 2009-07-23 Ashok Chaturvedi Auto venting packages
JP2018016403A (en) * 2016-07-29 2018-02-01 三井化学東セロ株式会社 Packaging bag excellent in gas permeability and anti-fogging property preferable for holding freshness of garden stuff and package
WO2018034344A1 (en) * 2016-08-19 2018-02-22 株式会社Ｗ Bag body

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JPS62174039U (en) * 1986-04-25 1987-11-05
JPH06255692A (en) * 1993-02-24 1994-09-13 Dainippon Printing Co Ltd Fermented soybean container
JPH0840466A (en) * 1994-07-27 1996-02-13 Nidaiki Kk Air-permeable bag
JPH11240579A (en) * 1998-02-25 1999-09-07 Nidaiki Kk Degasifying functional film provided in bag or container
JP2001354210A (en) * 2000-06-09 2001-12-25 Fujimori Kogyo Co Ltd Sealing method, sealing apparatus and bag body
JP2003081352A (en) * 2001-09-10 2003-03-19 Risu Pack Co Ltd Label having gas vent function for packaging container
WO2009090674A2 (en) * 2008-01-17 2009-07-23 Ashok Chaturvedi Auto venting packages
JP2018016403A (en) * 2016-07-29 2018-02-01 三井化学東セロ株式会社 Packaging bag excellent in gas permeability and anti-fogging property preferable for holding freshness of garden stuff and package
WO2018034344A1 (en) * 2016-08-19 2018-02-22 株式会社Ｗ Bag body

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020147376A (en) * 2020-06-08 2020-09-17 株式会社Ｗ Container for reserving food

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