EP1466840B1 - Verfahren zur herstellung eines gasaustauschpakets - Google Patents

Verfahren zur herstellung eines gasaustauschpakets Download PDF

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Publication number
EP1466840B1
EP1466840B1 EP02790783A EP02790783A EP1466840B1 EP 1466840 B1 EP1466840 B1 EP 1466840B1 EP 02790783 A EP02790783 A EP 02790783A EP 02790783 A EP02790783 A EP 02790783A EP 1466840 B1 EP1466840 B1 EP 1466840B1
Authority
EP
European Patent Office
Prior art keywords
lid
container
receptacle
gas
band tape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02790783A
Other languages
English (en)
French (fr)
Other versions
EP1466840A1 (de
EP1466840A4 (de
Inventor
Masahiko Kawashima
Gensyou Unno
Yutaka Matsuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Corp
Original Assignee
Asahi Kasei Life and Living Corp
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Filing date
Publication date
Application filed by Asahi Kasei Life and Living Corp filed Critical Asahi Kasei Life and Living Corp
Publication of EP1466840A1 publication Critical patent/EP1466840A1/de
Publication of EP1466840A4 publication Critical patent/EP1466840A4/de
Application granted granted Critical
Publication of EP1466840B1 publication Critical patent/EP1466840B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65D81/18—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 providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • 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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B65D55/08—Annular elements encircling container necks
    • B65D55/0818—Destructible or permanently removable bands, e.g. adhesive
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • 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
    • 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
    • B65D81/18—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 providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2069—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
    • B65D81/2076—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere in an at least partially rigid container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00101—Shape of the outer periphery curved square-like or rectangular-like
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/0012—Shape of the outer periphery having straight sides, e.g. with curved corners
    • B65D2543/00175—Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond
    • B65D2543/00194—Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond square or rectangular
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00296—Plastic
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342—Central part of the lid
    • B65D2543/00351—Dome-like
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509—Cup
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00527—NO contact
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00953—Sealing means

Definitions

  • the present invention relates to method of manufacturing a gas displacement package and to the package.
  • JP-A-9-295677 discloses a gas filling packaging method in which a gas filling packaging tray is used that includes a tray on which a substance is placed and a lid that covers the tray, the lid having a gas blow-in inlet on a top thereof and a gas outlet therearound, to cover the entire tray with a heat-shrinkable film having a gas barrier property. This method allows gas to be blown in through the gas inlet and exhausted through the outlet around the lid, thus allowing air remaining in the tray covered by the lid to be displaced by gas.
  • JP-A-4-189721 discloses a method in which there is provided an insulating base plate having a heating element at an edge of a hole opened in a plate, a container is placed with a flange of the container applied to the heating element, and then filled with contents, subjected to gas displacement in a vacuum chamber, and covered with a lid, and after conveyed by a conveyer, a pressing plate is lowered from above the container to perform heat bonding of the container and the lid with a die of a heated seal device.
  • JP-A-61-103 discloses a method in which a container made of a synthetic resin sheet is filled with contents, an opening of the container is covered with a sealing film or sheet, and then the entire opening of the container is thermally pressed from an upper surface of the sealing film or sheet by a heat roll to thermally bond a periphery of the opening.
  • the method represented by JP-A-9-295677 is a method in which the gas is simply flushed into the package through the gas blow-in inlet at the top of the lid, and the air is exhausted through the gas outlet, thus a rate of displacement when the gas displaces the air in a space in the package is low, and depending on shapes of the contents, oxygen contained in the contents cannot be sometimes displaced by the displacement gas.
  • the entire package is covered with the heat-shrinkable film having the gas barrier property, thus cutouts of the gas blow-in inlet at the top of the lid or the gas outlet tend to break the film to cause leakage of the filled gas.
  • the number of packaging materials are lot, causing a problem of increase in entrepreneur's bearing of cost based on the Container and Package Recycling Law.
  • JP-A-4-189721 requires the heat element corresponding to each of various containers with different sizes or designs. This requires a seal die resistant to pressure that accommodates changes in atmospheric pressure in the chamber, and such a dedicated seal die for each container is expensive to manufacture.
  • JP-A-61-103 causes thermal deformation of the sealing film or sheet when the sealing film or sheet is thermally pressed on the opening of the container by the heat roll.
  • the content protrudes beyond the depth of the container, there are problems that the content is pressed by the top film, or the films overlap to each other at flange of the container to make wrinkles and cause foreign matters to be mixed into through clearances.
  • this method has a problem that, for containers with different shapes, heating dies corresponding to the shapes have to be provided.
  • the present invention has an object to provide a method of manufacturing a gas displacement package that allows air in a space and a content in the package to be displaced by gas at a high rate of displacement, complies with the Container and Package Recycling Law, and facilitates changes in shapes and sizes of the package.
  • a method of manufacturing a gas displacement package according to the present invention is defined in appended claim 1.
  • the container is made of plastic.
  • the container, the band tape and an adhesive label have a gas barrier property.
  • the hole for gas displacement is provided on a top surface of the lid.
  • the vertical portions of the flanges vertically extend downwards from the horizontal portions.
  • a packaging container according to the present invention is defined in appended claim 6.
  • the ridge of the lid and/or the ridge of the receptacle may have recesses formed in such a manner that the vertical portion is dented inwardly and the horizontal portion is dented downwardly.
  • the packaging container may have a reinforcing surface that extends outwardly and horizontally from the end of the inside vertical portion.
  • the container of the present invention includes a receptacle and a lid, which may be made of any materials.
  • the materials may include plastic, metal, wood, paper, etc. alone, or lamination of such materials.
  • the lid of the container of the present invention is shaped to cover a top of the receptacle, and may be made of the same materials as the receptacle.
  • plastic is preferable because it is clear and allows a content to be visible, has a high gloss, a good appearance, and a good fractional recovery system in disposing of.
  • a gas barrier plastic described later is more preferable in view of preventing gas dispersion.
  • a shape of an opening of the receptacle of the container according to the present invention may be a circle, a polygon such as a triangle, a box (rectangle, square), or a rhombus, or an indefinite shape such as an ellipse, or a curve.
  • the container is used in such a manner that it is sealed with the band tape, that is, the band tape is adhered over both edges of the receptacle and the lid.
  • An overlapping portions of the receptacle and the lid of the container of the present invention means a portion at which edges of the openings of the receptacle and the lid overlap each other to close.
  • the shapes of the edges may be linear or curved, or may be along or not along the shape of the receptacle as long as both edges can overlap each other to close.
  • the overlapping portion is not necessarily provided at the entire edges as long as the container can be sealed when the band tape is adhered, but is preferably provided at an entire periphery. Parts of the receptacle and the lid may be joined via a hinge.
  • the overlapping portion has flanges and they are shapes to be overlapped at the flanges. With the flanges, attaching the band tape to ends of the flanges, that is, ends of vertical portions easily provides a stable seal.
  • the flanges refer to entire portions extending from the edges of the openings of the receptacle and the lid, and correspond to brim portions at which the receptacle and the lid overlap each other (for example, reference numeral 11 and 21 in Fig. 1 ).
  • the flanges comprise horizontal portions (reference numeral 12 and 22 in Fig. 1 ), vertical portions (reference numeral 13 and 23 in Fig. 1 ), and ridges at boundaries between the horizontal and vertical portions (reference numeral 14 and 24 in Fig. 1 ).
  • the horizontal portions are surfaces substantially horizontally extending from the edges of the openings of the receptacle and the lid.
  • the horizontal portions may be tilted or have slight variations in thicknesses of materials as long as they are substantially horizontal.
  • the vertical portions are surfaces substantially vertically extending from the horizontal portions.
  • the vertical portions may be tilted as long as they are substantially vertical.
  • the direction of the extending may be upwardly or downwardly from the horizontal portion. It is preferable, however, both the vertical portions of the receptacle and the lid extend downwardly because with such structure, dust and litter hardly enter from the overlapped portions.
  • providing the flange with the vertical portion allows the band tape to be stably attached to the vertical portion even when mechanically attached using an attachment device etc.
  • a difference between lengths of the vertical portions of the lid and the receptacle is provided, because the band tape can be attached over both ends of the flanges and attached even to corners of the container without wrinkles.
  • an attachment device that operates at high speeds is used for attaching, it is effective that the vertical portion which is inside the container is longer than the vertical portion which is outside the container.
  • the vertical portion of the receptacle when the vertical portions are extended downwardly from the horizontal portions, the vertical portion of the receptacle is formed to be longer than the vertical portion of the lid, while when the vertical portions are extended upwardly from the horizontal portions, the vertical portion of the lid is formed to be longer than the vertical portion of the receptacle.
  • This shape of the container causes no wrinkles of the band tape at the corners of the container, and no reduction in sealing performance.
  • sealing is carried out by using a packaging device, even if shape or size of the container is changed, it is possible to cope with such change only by changing the width of the band tape or attaching position of the band tape set in the packaging device, thus eliminating the need for providing sealing parts for each container.
  • the longer vertical portion is provided with a step (reference numeral 81 in Fig. 6 ) having a depth enough to accommodate a thickness of the shorter vertical portion, the vertical portions become flat to allow the band tape to be attached in a flat manner, thus facilitating work, increasing strength as a package, and facilitating handling of the package.
  • the vertical portion may have a length such that the band tape can be attached over the portion, and the length is not limited, but is preferably 2 mm to 35 mm because the lid and the receptacle are not easily displaced when the tape is attached, thus facilitating attachment of the tape, increasing stiffness of the flange, and improving the appearance.
  • the length is more preferably 3 mm to 30 mm, and further preferably 4 mm to 25 mm.
  • a recess reference numeral 15 in Fig. 1
  • the flange may have a fitting thread.
  • the fitting thread means a shape having grooves for fitting the receptacle to the lid at the ridges of the receptacle and the lid.
  • the providing manner of the fitting thread is roughly divided into three kinds: outer fitting, inner fitting, and inner and outer fitting.
  • the outer fitting is a structure not requiring high accuracy of a mold for forming the container, and is inexpensive and easy.
  • the inner fitting requires higher accuracy of the mold in forming the container in comparison with the outer fitting, and is expensive, but when the content is deli substances containing juice, it can prevent leakage of the juice out of the container.
  • the inner and outer fitting requires high accuracy of the mold in forming the container, and is very expensive, but is the highest level fitting that provides high fitting strength at a fitting portion and prevents separation of the lid from the receptacle even when some impact is applied.
  • the packaging container has a hole.
  • the hole has to be a channel through which gas flows into and out of the packaging container which the receptacle and the lid are sealed, and is different from a clearance between a receptacle and a lid in a prior art gas displacement method using a chamber.
  • a size or a shape of the hole, or the number of holes may be such that the gas can flow into and out of the packaging container.
  • the hole is preferably provided on the lid in view of ease of closing the hole after the gas displacement or preventing leakage of the content, and more preferably on the top of the lid.
  • An opening area of the hole is preferably 0.3 to 3 cm 2 with respect to a volume of the content of 1000 cm 3 in the packaging container.
  • the opening shape of the hole may be such that the gas can flow into and out of the packaging container.
  • the opening shapes of the hole may include a cutout shape having a complete opening such as a square (A in Fig 8 ), a rectangle (B in Fig. 8 ), a rounded rectangle (C in Fig. 8 ), a polygon (D in Fig. 8 ), a circle (E in Fig. 8 ), a semi-circle (F in Fig. 8 ), an ellipse (G in Fig. 8 ), a semi-ellipse (H in Fig. 8 ), a star (I in Fig. 8 ), and an indefinite shape (J in Fig.
  • cutout shape having an incomplete opening such as a quasi-horseshoe shape (O in Fig. 8 ), a V shape (P in Fig. 8 ), a U shape (Q in Fig. 8 ), a C shape (R in Fig. 8 ), and an indefinite shape (S in Fig. 8 ).
  • These cutout shapes are preferable because they cause no cuttings in boring the hole in the lid.
  • An area of the cutout hole is represented by the largest area when a tongue in the cutout is folded to open the hole.
  • the opening area of the hole differs depending on the volumes of the contents. However, if the opening area of the hole is 0.3 cm 2 smaller with respect to the volume of the content of 1000 cm 3 in the packaging container, resistance when air or the desired gas flows in or out of the packaging container through the hole becomes large because a large amount of gas moves in and out of the packaging container in a short time when the chamber is deaerated or the packaging container is filled with a desired gas. Due to such resistance, a difference in atmospheric pressure between the inside and the outside of the packaging container is resulted and sometimes deformation of the packaging container occurs.
  • the opening area of the hole is preferably 0.3 to 3 cm 2 , more preferably 0.4 to 2.8 cm 2 , and further preferably 0.6 to 2.5 cm 2 .
  • the number of holes is preferably as small as possible such that the holes are closed by one adhesive label, in view of ease of closing the holes and appearance of the packaging container.
  • the number of holes is preferably as small as possible such that the holes are closed by one adhesive label, in view of ease of closing the holes and appearance of the packaging container.
  • by collectively providing a plurality of small holes at one place it is possible to close the small holes by one adhesive label, so that mechanical strength of the adhesive label is increased. Accordingly, this is preferable.
  • the hole is created in a different process from the forming, and an example of creating the hole will be described.
  • a plastic sheet is thermally molten, and formed in conformity with a mold, and sheet-like continuous formed products are pressed and cut out by a cutting blade called a cutting die.
  • the hole is closed by an adhesive label.
  • a print may be made on the adhesive label for product differentiation. Materials for the adhesive label will be described later.
  • Fig. 1 shows a perspective view of an embodiment of a packaging container which is not according to the present invention.
  • reference numeral 10 denotes a receptacle; 11, flange; 12, horizontal portion; 13, vertical portion; 14, ridge; 15, recess; 20, lid; 21, flange; 22, horizontal portion; 23, vertical portion; 24, ridge; 40, hole; and 50, adhesive label.
  • the packaging container comprises the receptacle 10 and the lid 20, and the receptacle 10 has the flange 11 at an opening, and the lid 20 has the flange 21 that is overlapped on the flange 11.
  • Fig. 2 is a perspective view showing a state in which a content is put in the receptacle 10 of the packaging container, the lid 20 is placed on the receptacle 10, and the vertical portions are sealed with a band tape.
  • reference numeral 30 denotes the band tape; 40, hole; and 50, adhesive label.
  • the flange 11 of the receptacle 10 has the horizontal portion 12 horizontally extending from a periphery of the opening of the receptacle 10, and the vertical portion 13 vertically extending from an end of the horizontal portion 12.
  • the flange 21 has the horizontal portion 22 and the vertical portion 23 correspondingly to the flange 11.
  • the receptacle has, at part of the ridge 14, the recess 15 formed in such a manner that the vertical portion 13 is dented inwardly and the horizontal portion 12 is dented downwardly.
  • a recess may be formed on the flange 21 of the lid in such a manner that the vertical portion 23 is dented inwardly and the horizontal portion 22 is dented upwardly at the ridge 24 formed by the horizontal portion 22 and the vertical portion 23.
  • the recess 15 is provided in order to increase stiffness of the flange 11, and may be provided at a portion other than corners of the flange, but may be provided on the corners as desired.
  • the number of recesses 15 is not
  • Fig. 3 shows an example of the flanges 11, 12.
  • Fig. 3(a) is a partial enlarged sectional view taken along a line A-A' in Fig. 1 , and shows an example in which the vertical portions 13, 23 are vertically and downwardly extended from the ends of the horizontal portions 12, 22. In this configuration, the vertical portion 13 of the receptacle 10 placed inside is formed to be longer than the vertical portion 23 of the lid 20.
  • Fig. 3(b) shows an example in which the above described inner and outer fitting is provided in the example of Fig. 3(a) .
  • a protrusion 17 and a groove 27 fitting over the protrusion 17 are formed in the horizontal portions 12, 22 of the receptacle 10 and the lid 20 in parallel to the peripheries of the openings to strengthen the flanges 11, 21.
  • Fig. 4 is enlarged views of the flange 11 of the receptacle 10 shown in Fig. 1 .
  • Fig. 4(a) is a plan view of the flange (a top view of the horizontal portion)
  • Fig. 4(b) is a front view of the flange (a front view of the vertical portion).
  • the dotted line in the front view of Fig. 4(b) indicates a position to which the vertical portion of the lid overlaps.
  • a size of the recess 15 depends on a size or strength of the flange 11, but when in general the receptacle is used as a packaging container for food products, it is preferable that the recess 15 may be a rectangle in the horizontal portion 12 and the vertical portion 13 as shown in Fig. 4 .
  • a width (W) of the recess 15 is 1 to 20 mm
  • a distance (S) between adjacent recesses 15 is 3 to 20 mm
  • a depth from the vertical portion 13 is set such that a clearance (d) remaining in a width (D) of the horizontal portion 12 is 1 mm or more and 1/5 to 4/5 of the width (D).
  • a depth (T) from the horizontal portion 12 is set such that a clearance (t) between the recess 15 and the end of the vertical portion 23 of the flange 21 of the lid 20 indicated by the dotted line is 0.5 mm or more and 1/2 or less of a width (H) of the vertical portion 13.
  • a relationship between a width (H) of the vertical portion 13 and the depth (T) is set such that (H-T) leaves an enough width to attach the band tape.
  • the shape of the recess 15 may be, besides the rectangles in the horizontal portion 12 and the vertical portion 13 as shown in Figs. 1 and 4 , a triangle as shown in Fig. 5(a) , a semi-circle or a semi-ellipse as shown in Fig. 5(b) , or a trapezoid as shown in Fig. 5(c) in the horizontal portion 12.
  • a top angle ( ⁇ ) in the horizontal portion 12 is preferably 20 to 150°
  • a width (w) of a top side is preferably 1 to 18 mm.
  • a depth from the vertical portion 13 is set such that a clearance (d) remaining in the width (D) of the horizontal portion 12 is 1 mm or more and 1/5 to 4/5 of the width (D). Further, a width (W) in the vertical portion 13, a distance (S) between the adjacent recesses 15, and a depth from the horizontal portion 12 are the same as in the rectangle shown in Fig. 4(a) .
  • one of the flanges 11, 21 of the receptacle 10 and the lid 20 may have a protrusion extending toward the other, and the other of the flanges 11, 21 may have a recess receiving the protrusion.
  • Fig. 6 shows an embodiment of the present invention, in which a step 81 extending outwardly in a horizontal direction is formed on the vertical portion 13 at a position below the end of the vertical portion 23, and a reinforcing surface 82 extending outwardly in the horizontal direction from the end of the vertical portion 13 is formed.
  • Fig. 7 is a partial plan view of the flange of the receptacle shown in Fig. 6 .
  • a width (p1) of the step 81 is preferably within ⁇ 2 mm of a thickness of the vertical portion 13 of the flange 11 of the lid 20.
  • a step which is formed on a surface of the band tape by the end of the vertical portion 23 when the band tape is attached, is made to be gentler, thus improving the appearance.
  • the step 81 is preferably placed near the vertical portion 23 of the lid 20, and more preferably within 2 mm from the end of the vertical portion 23.
  • a width (p2) of the reinforcing surface 82 is preferably set within 1 to 2 mm because a width less than 0.5 mm insufficiently increases the stiffness, and a width more than 2 mm compromises the appearance.
  • thermoforming method such as air pressure forming, vacuum forming, vacuum air pressure forming.
  • thermoplastic resins include a polyethylene resin, a polypropylene resin, a polystyrene resin, a methacrylate resin, a polyvinyl chloride resin, a polycarbonate resin, a cellulose acetate resin, and the like.
  • thermoplastic resins include a polyamide resin, a polyethylene terephthalate resin, a polybutylene terephthalate resin, an ethylene-vinyl alcohol copolymer resin (EVOH), and the like.
  • the receptacle and the lid are made of a single layer sheet or a multilayer sheet made of such resins. Methods for forming a multilayer include coextruding, various kinds of laminating, etc. and may be appropriately selected.
  • the sheet used in the present invention may be made of a material having the gas barrier property in accordance with need.
  • the band tape in the present invention is a shape elongated with a width, and can seal the packaging container by being attached over flange surfaces extending from the receptacle and the lid.
  • the band tape has an adhesive on a surface to be brought into contact with the packaging container. As long as the receptacle and the lid can be sealed without any clearances (tightly sealed) by the adhesive, the band tape may have a constant width or a varying width.
  • Materials for the band tape may include a single layer or a multilayer of paper, metal thin films, and resin, but materials including metal such as a metal thin film or a metallized film are not preferable in view of preventing spark caused by electron collision in heating by a microwave oven, and the same material as the packaging container is preferable in view of fractional recovery.
  • a gas barrier resin is further preferable in order to prevent gas dispersion from the clearance between the lid and the receptacle.
  • the gas barrier band tape may be made of, for example, two layers of a gas barrier base layer and an adhesive layer.
  • the gas barrier base layer may be provided with a gas barrier resin or a resin layer having a laminated inorganic substance.
  • a resin layer having a laminated inorganic substance for example, a resin layer can be considered in which an inorganic substance of silica and/or alumina is vapor deposited on a low density polyethylene resin layer, of which gas barrier property is poor, to provide gas barrier properties.
  • the gas barrier base layer preferably has an amount of transmission of carbon dioxide gas of 1.0 to 4935.0 ml/m 2 /day MPa, an amount of transmission of oxygen gas of 1.0 to 3948.0 ml/m 2 /day/MPa, and an amount of transmission of nitrogen gas of 1.0 to 1480.5 ml/m 2 /day/MPa, more preferably has an amount of transmission of carbon dioxide gas of 10.0 to 4500.0 ml/m 2 /day MPa, an amount of transmission of oxygen gas of 10.0 to 2500.0 ml/m 2 /day/MPa, and an amount of transmission of nitrogen gas of 10.0 to 1300.0 ml/m 2 /day/MPa, and further preferably has an amount of transmission of carbon dioxide gas of 20.0 to 4000.0 ml/m 2 /day MPa, an amount of transmission of oxygen gas of 20.0 to 1300.0 ml/m 2 /day/MPa, and an amount of transmission of nitrogen gas of 20.0 to 1000.0 ml/m 2 /day
  • the gas barrier base layer has an amount of transmission of carbon dioxide gas of 20.0 to 1000.0 ml/m 2 /day MPa, an amount of transmission of oxygen gas of 20.0 to 300.0 ml/m 2 /day/MPa, and an amount of transmission of nitrogen gas of 20.0 to 250.0 ml/m 2 /day/MPa.
  • Gas barrier base layer resin preferably has an amount of transmission of oxygen gas of 1.0 to 1974.0 ml/m 2 /day/MPa.
  • Gas barrier base layer resins may include, for example, a single layer or a multilayer of a resin compound that is composed exclusively of at least one of the followings: a polyolefin resin (PO) such as a polyethylene resin (HDPE, LLDPE, etc.), a polypropylene resin (PP), a polybutene-1 resin (PB), and a poly-4-methylpentene-1 resin; a polyolefin modified resin (PO modified resin) such as an ethylene-vinyl acetate copolymer resin (EVA), an ethylene-methyl methacrylate copolymer resin (EMA etc.), an ethylene-vinyl alcohol copolymer resin (EVOH etc.); a polyester resin (PEST) containing in part an aromatic component such as a polyethylene terephthalate (including modification) resin (PET etc.), or a polybut
  • the polyester resin (PEST) containing in part the aromatic component such as the polyethylene resin (especially HDPE), the polypropylene resin (PP), the ethylene-vinyl alcohol copolymer resin (EVOH etc.), the polyamide resin (Ny), the polyethylene terephthalate (including modification) resin (PET etc.), or the polybutylene terephthalate (including modification) resin (PBT etc.), or containing the aliphatic component such as the polylactic acid resin, or the polyglycol acid resin are preferable in view of heat resistance and the gas barrier property.
  • the aromatic component such as the polyethylene resin (especially HDPE), the polypropylene resin (PP), the ethylene-vinyl alcohol copolymer resin (EVOH etc.), the polyamide resin (Ny), the polyethylene terephthalate (including modification) resin (PET etc.), or the polybutylene terephthalate (including modification) resin (PBT etc.
  • the aromatic component such as the polyethylene resin (especially HDPE), the polypropylene
  • additives for example, an antioxidant, a light stabilizer, an antistatic agent, an anti-fogging agent, a coloring agent, or a lubricant may be mixed, or known surface treatments, for example, a corona discharge treatment, a flame treatment, an irradiation treatment of electron and plasma, an ion etching treatment, or a gas barrier coating treatment of vinylidene chloride etc. may be performed.
  • the thickness of the gas barrier base layer differs depending on amounts of transmission of oxygen gas of the resin to be used, and a preferable thickness is such that the amount of transmission of oxygen gas is 1.0 to 1974.0 ml/m 2 /day/MPa.
  • a preferable thickness is such that the amount of transmission of oxygen gas is 1.0 to 1974.0 ml/m 2 /day/MPa.
  • EVOH ethylene-vinyl alcohol copolymer resin
  • a required amount of transmission of oxygen gas can be reached in some ⁇ m in view of the amount of transmission of oxygen gas, but the resin has low stiffness as the band tape, thus may be laminated with other resins having stiffness.
  • Such resins include, for example, the polypropylene resin (PP).
  • the amount of transmission of oxygen gas is preferably 1.0 to 1974.0 ml/m 2 /day/MPa, and the thickness of the gas barrier base layer is preferably 15 to 100 ⁇ m in view of stiffness of the band tape.
  • the thickness is more preferably 20 to 90 ⁇ m, and further preferably 25 to 85 ⁇ m.
  • Adhesion in the present invention means bonding of the band tape, and the receptacle and the lid.
  • Adhesion strength can be appropriately selected, and typical adhesives are of a solvent type, a hot melt type, a reactive type, etc.
  • any adhesives can be used, and when the content is a food product, adhesives that comply with the Food Sanitation Law are preferably used.
  • the adhesives include, for example, a rubber adhesive, an acrylic adhesive, a vinyl ether adhesive, a silicone adhesive, or a resin compound that is composed exclusively of at least one of them.
  • the rubber adhesive, the acrylic adhesive, and the vinyl ether adhesive are preferable, and the rubber adhesive and the acrylic adhesive are more preferable.
  • the acrylic adhesive is further preferable.
  • the adhesives may contain known additives, for example, an antioxidant, a light stabilizer, an antistatic agent, an anti-fogging agent, or a coloring agent, without compromising the advantage of the present invention.
  • a silicon print having a separation effect is previously made on the gas barrier base layer, and so-called a tampering prevention print may be made in which the adhesive layer is separated from the gas barrier base layer, and remains on the receptacle and the lid to which the adhesive layer adheres.
  • the rubber adhesive may include, for example, at least one adhesive elastomer selected from a natural rubber exclusively composed of cis-1,4-polyisoprene; a synthetic rubber exclusively composed of a styrene-butadiene rubber (SBR), poly isobutylene, butyl rubber, etc.; or a block rubber exclusively composed of a styrene-butadiene-styrene copolymer rubber (SBS), styrene-isoprene-styrene copolymer rubber (SIS), etc., mixed with an adhesive attaching agent such as a rosin resin, a terpene resin, a petroleum resin, or a chroman-indene resin that is a thermoplastic resin of an amorphous oligomer (middle molecule weight copolymer more than a dimmer) having a molecular weight of some hundreds to about ten thousands in liquid or solid at room temperature, and a softener such as
  • the acrylic adhesive may include, for example, an adhesive reactant of a main monomer that provides adhesion such as acrylic acid alkyl ester that is a homopolymer generally with low Tg; a comonomer that can be copolymerized with the main monomer and provide cohesiveness to increase Tg, such as acrylic acid ester of a lower alkyl group, methacrylic acid alkyl ester, vinyl acetate, styrene, acrylonitrile; a monomer containing a carboxyl group such as acrylic acid or methacrylic acid (acrylate etc.); and a monomer containing a functional group that provides adhesion and becomes a crosslinking point such as a hydroxyl group, an epoxy group, or an amino group, mixed with the adhesive attaching agent, the softener, etc. in some cases.
  • an adhesive reactant of a main monomer that provides adhesion such as acrylic acid alkyl ester that is a homopolymer generally with low Tg
  • the vinyl ether adhesive may include, for example, a homopolymer such as vinyl methyl ether, vinyl ethyl ether, or vinyl isobutyl ether, or a copolymer (an adhesive elastomer) with acrylate, mixed with the adhesive attaching agent, the softener, etc. in some cases.
  • the silicone adhesive may include, for example, a polymer (or an adhesive elastomer) having a residual silanol group (SiOH) at a terminal of a polymer chain such as polydimethyl siloxane or polydimethyl diphenyl siloxane with a high molecule weight, mixed with the adhesive attaching agent, the softener, etc.
  • a polymer or an adhesive elastomer having a residual silanol group (SiOH) at a terminal of a polymer chain such as polydimethyl siloxane or polydimethyl diphenyl siloxane with a high molecule weight, mixed with the adhesive attaching agent, the softener, etc.
  • the synthetic rubber adhesive or the acrylic adhesive are preferable because the adhesive strength can be set in a wide range in view of the gas barrier property, especially the gas displacement packaging, and in view of food sanitation.
  • the adhesive strength is preferably 0.1 to 15 N/cm in a measuring method by a 180 degrees peeling test of JIS-Z-0237 in view of adhesive strength in adhesion and peeling strength in peeling.
  • the adhesive strength is more preferably 0.2 to 13 N/cm, and further preferably 0.3 to 12 N/cm.
  • the thickness of the adhesive layer differs depending on adhesives to be used, but the adhesive strength may be 0.1 to 15N/cm and does not depend on the thickness of the adhesive layer.
  • the thickness of the adhesive layer is preferably 3 to 70 ⁇ m in view of the adhesive strength.
  • the thickness is more preferably 5 to 60 ⁇ m, and further preferably 8 to 55 ⁇ m.
  • the band tape preferably has a certain degree of strength and elongation in view of mechanical suitability when the tape is attached by a machine.
  • tensile strength is preferably 10 to 120 N/10 mm, more preferably 20 to 110 N/10 mm, and further preferably 25 to 95 N/10 mm.
  • the band tape itself preferably has flexibility in order for the band tape to be adhered to the corners of the receptacle and the lid without any gas dispersion area (clearance) such as wrinkles.
  • the elasticity is 3 to 150 kg/mm 2 , more preferably 5 to 130 kg/mm 2 , further preferably 7 to 110 kg/mm 2 , in view of an adhesion state of the band tape to the receptacle and the lid.
  • seal is realized by overlapping the band tape once wound around the packaging container on a front end thereof (Fig. 158c)).
  • a slight clearance is sometimes created along the width of the band tape depending on the thickness of the front end of the band tape.
  • sealing performance may be increased by smoothing the band tape with a spatula to move the adhesive layer, or covering the band tape with a hot melt agent, or various gas barrier films.
  • the band tape 30 may have a function of easy opening.
  • the band tape is provided with a narrow portion such as a cutout ( Fig. 16 ). Upon opening, the band tape is broken at the narrow portion.
  • the band tape is provided with a string-like cut tape 60 in parallel with the length of the band tape at a center of the width of the band tape ( Fig. 17 ).
  • the band tape sealing the flanges of the receptacle and the lid is separated into two at the center by the cut tape 60 (upper and lower ends of the separated band tape are still attached to the receptacle and the lid) to easily open the package. With these structure, the packaging container can be easily opened.
  • the adhesive label will be described.
  • the adhesive label preferably contains a gas barrier material.
  • the hole is closed by the label to seal so as to prevent a desired gas in the packaging container from being dispersed.
  • the adhesive label requires tight contact with the receptacle and the lid.
  • the adhesive label may only require tight contact, which may be any of sealing, bonding, or adhesion.
  • the adhesive strength of the adhesive label may be appropriately selected, and the kind or the amount of application of the adhesive may be selected depending on desired adhesive strength.
  • the same adhesives as used for the band tape may be used, but for use of cooking by a microwave oven, an adhesive label using an adhesive of the water or organic solvent type or the hot melt type that has a tendency to reduce the adhesive strength with increase in temperature in the packaging container is preferable in view of preventing water vapor blowout caused by increase in internal pressure of the packaging container resulting from heating by the microwave oven.
  • the adhesive of the water or organic solvent type or the hot melt type are more preferable since they have safety in food sanitation.
  • the adhesive label can have any shapes as long as it can close the hole, regardless of opening shape of the hole.
  • the shapes may include a square (A in Fig 8 ), a rectangle (B in Fig. 8 ), a rounded rectangle (C in Fig. 8 ), a polygon (D in Fig. 8 ), a circle (E in Fig. 8 ), a semi-circle (F in Fig. 8 ), an ellipse (G in Fig. 8 ), a semi-ellipse (H in Fig. 8 ), a star (I in Fig. 8 ), and an indefinite shape (J in Fig. 8 ), and a circle (K in Fig. 8 ), a rectangle (L in Fig. 8 ), and an ellipse (I in Fig. 8 ) with a tab.
  • uneven portions may be created near the hole to increase stiffness of the lid when the adhesive label is attached.
  • Materials of the adhesive label may include a single layer or a multilayer of paper, metal thin films, or resin, but materials including metal such as a metal thin film or a metallized film are not preferable in view of preventing spark caused by electron collision in heating by a microwave oven, and the same material as the packaging container is preferable in view of fractional recovery.
  • a gas barrier resin is further preferable in order to prevent gas dispersion.
  • the material having the gas barrier property, the configuration, the thickness, and the performance may be the same as described above with respect to the band tape.
  • the adhesive strength of the adhesive tape is preferably 0.1 to 10 N/cm in a measuring method by a 180 degrees peeling test at 25°C of JIS-Z-0237 (the 180 degrees peeling test of JIS-Z-0237: a 25 mm wide tape is attached to a stainless plate, one end of the tape is peeled off from the test plate toward the other end in a 180 degrees direction at a peeling rate of 300 m/min, and a force required for the peeling is measured and used), in view of the adhesive strength upon adhesion and the peeling strength upon peeling.
  • the adhesive strength is preferably 0.2 to 9.5 N/cm, and more preferably 0.3 to 7.5 N/cm.
  • a measured value by the 180 degrees peeling test at 80°C is preferably lower than a measured value by the 180 degrees peeling test at 25°C in view of the adhesive label automatically peeling off by the increase in the internal pressure of the packaging container.
  • the measured value by the 180 degrees peeling test at 25°C is preferably 0.1 to 8 N/cm in view of the adhesive strength upon adhesion and the peeling strength upon peeling.
  • the measured value is more preferably 0.2 to 7.5 N/cm, and further preferably 0.3 to 5.5 N/cm.
  • the thickness of the adhesive layer differs depending on the adhesives to be used, but the adhesive strength may be 0.1 to 10N/cm in the measuring method by the 180 degrees peeling test at 25°C, and does not depend on the thickness of the adhesive layer.
  • the thickness of the adhesive layer is preferably 2 to 10 ⁇ m in view of the adhesive strength.
  • the thickness is more preferably 3 to 90 ⁇ m, and further preferably 5 to 85 ⁇ m.
  • the gas barrier adhesive label has a certain degree of strength in view of preventing breakage caused by external puncture.
  • puncture strength is preferably 2.0 N and more, more preferably 2.5 N and more, and further preferably 3.0 N and more.
  • the adhesive label may have a tab for ease of opening.
  • the adhesive label it is preferable in view of prevention of blowout in heating the packaging container that the adhesive label has a semi-circular tab which is pulled up from the lid to easily open the packaging container for ease of opening.
  • Main contents of the packaging container are cooked food products, for example, delis (boiled, baked, steamed, or fried foods) or boxed meals sold at supermarkets or convenience stores.
  • cooked food products for example, delis (boiled, baked, steamed, or fried foods) or boxed meals sold at supermarkets or convenience stores.
  • the packaging method according to the present invention is a gas displacement sealing method in which the hole 40 is used to perform deaeration and gas displacement in a chamber, and the hole is closed after the gas displacement.
  • gas in a space or the content in the packaging container is displaced by a desired gas.
  • gas displacement is performed by an inert gas, thereby causing deaeration and gas displacement in the packaging container via the hole provided on the container.
  • the deaeration and the gas displacement in the chamber substantially eliminate a difference in atmospheric pressures between the inside of the packaging container and the inside of the chamber (the outside of the packaging container) to prevent the packaging container from being crushed by the difference in the atmospheric pressures.
  • the gas displacement means that air in the packaging container is displaced by a desired gas, which contributes to increase in shelf life of the contents and to prevent color variation of the product.
  • a desired gas which contributes to increase in shelf life of the contents and to prevent color variation of the product.
  • holding food products in an inert gas atmosphere contributes to (1) preventing oxidation of oil and fat content, (2) preserving active ingredients such as vitamins, (3) preventing rot caused by development of mold, bacteria, or yeast, (4) preventing discoloration and fading, and (5) preventing loss of flavor, etc.
  • displacement by a gas such as carbon dioxide having bacteriostasis can sometimes increase the shelf life of the contents.
  • Any gases generally known can be used in the present invention.
  • nitrogen, carbon dioxide, oxygen, argon, etc. can be used alone or in combination thereof.
  • Ozone or natural and synthetic antibacterial substances for example, hinokitiol
  • bactericide for mold, bacteria, or yeast may be used.
  • a general chamber type gas displacement method can be used as a method of deaeration and gas displacement in the chamber.
  • gas displacement methods are of the chamber type and the gas flushing type.
  • Fig. 9 shows a chamber type gas displacement method according to the present invention.
  • the chamber type gas displacement method according to the present invention is a method in which the packaging container, of which the receptacle 10 and the lid 20 (hole 40) are sealed with the band tape 30, is placed in the space in the chamber (reference numeral 70 in Fig. 9 ), the whole of the air in the chamber is expelled to be vacuum once (B in Fig. 9 ), and then a desired gas is fed into the chamber under vacuum for gas displacement.
  • the adhesive label 50 is attached to the hole 40 of the lid 20 in the chamber to seal the space in the packaging container (C in Fig. 9 ).
  • the chamber type gas displacement method can provide a high rate of gas displacement and reliable gas displacement, while the gas flushing type gas displacement method tends to provide a low rate of gas displacement though it is simple and inexpensive.
  • the gas displacement method according to the present invention is of the chamber type described above, and the air in the space and the contents in the packaging container is reliably displaced by gas to increase the shelf life of the content and to prevent discoloration of the product, thereby allowing displacement in the packaging container at the high rate.
  • FIG. 10 A rectangular receptacle ( Fig. 10 ) and a lid ( Fig. 11 ) are used and ridges of the receptacle and the lid ( Fig. 12 ) overlap each other, and the ridges are sealed with the band tape ( Fig. 13).
  • Fig. 13 is a perspective view showing a state in which the overlapping ridges of the receptacle and the lid are being sealed in a clockwise direction with the band tape.
  • FIG. 14 is a perspective view showing a state in which the overlapping ridges of the receptacle and the lid have been sealed with the band tape.
  • the bonding direction of the band tape may be in the clockwise direction as shown or in the counterclockwise direction, as long as the overlapping ridges of the receptacle and the lid can be sealed with the band tape.
  • the receptacle and the lid are sealed with the band tape, therefore receptacles and lids of any shapes can be sealed with the band tape.
  • this sealing method is excellent.
  • Figs 15 , 16 , and 17 show a process of causing only the ridges of the rectangular receptacle and lid to overlap each other, and sealing the receptacle and the lid with the band tape having adhesion.
  • the band tape in Figs 15 , 16 , and 17 is attached so as to achieve the ease of opening, or the band tape itself is formed to achieve the ease of opening.
  • Fig. 15(a) is a perspective view showing a state in which the overlapping ridges of the rectangular receptacle and lid are sealed in the clockwise direction with the band tape, and sealing has been completed with a rear end of the band tape being not adhered to the receptacle and the lid.
  • Fig. 15(b) is a perspective view showing a state in which the rear end of the band tape not adhered to the receptacle and the lid is being pulled for opening.
  • Fig. 15(c) is a schematic diagram of ends of the band tape in Fig. 15(a) overlapping each other, seen from the above.
  • Fig. 16 shows an example in which the same receptacle and the lid as the example shown in Fig. 15 are used and a cutout at a side along the length of the band tape is provided. Like the example shown in Fig. 15 , Fig.
  • FIG. 16(a) is a perspective view showing a state in which the band tape with the cutout is used, and sealing has been completed.
  • Fig. 16(b) is a perspective view showing a state in which the rear end of the band tape is being pulled to cause breakage at the cutout of the band tape for opening.
  • Fig. 16(c) is a schematic diagram of the ends of the band tape in Fig. 16(a) , seen from the above. As described above, pulling the rear end causes the band tape to be cut from the cutout near the rear end of the band tape, thereby facilitating opening.
  • the cutout of the band tape may be created at part of the side of the band tape as shown in Fig. 16 , or may be created across the side or at both sides as long as the tape is cut when pulled.
  • Fig. 17 shows an example in which the same receptacle and the lid as shown in Fig. 15 are used and a cut tape is provided in parallel with the length of the band tape at the center along the width of the band tape.
  • Fig. 17(a) is a perspective view showing a state in which the band tape with the cut tape 60 in parallel with the length is used, and sealing has been completed.
  • Fig. 17(b) is a perspective view showing a state in which a rear end of the cut tape of the band tape with the cut tape in parallel with the length is being pulled to separate the band tape into two at the center by the cut tape (upper and lower ends of the separated band tape are still attached to the receptacle and the lid) for opening the packaging container.
  • the method in which the cut tape is provide in parallel with the length of the band tape at the center of the width of the band tape, and the band tape sealing the ridges of the receptacle and the lid is separated into two at the center by the cut tape to easily open the packaging container is preferable in view of ease of opening.
  • a color of the cut tape may be differed from a color of the band tape for clarity.
  • An undrawn barrier multilayer film was attached to a polypropylene resin sheet with filler for a receptacle, and a polystyrene resin sheet for a lid, using a polyurethane dry laminate adhesive to form a multilayer resin sheet.
  • the multilayer resin sheet was thermoformed into shapes shown in Figs. 10 (the receptacle), 11 (the lid), and 12 (the lid placed on the receptacle).
  • the lid was formed with a C-shaped hole having a 25 cm diameter on a top thereof by a punch after forming and before drawing a formed product.
  • Substantially vertical flanges of the receptacle and the lid were sealed with a band tape shown in the examples.
  • the volume in a packaging container was 800 cm 3 .
  • the packaging container is subjected to vacuum and gas displacement using a chamber, air in the packaging container was displaced by a high purity nitrogen gas (purity 99.99%), the C-shaped hole on the lid was sealed with a circular adhesive label having a 35 cm diameter shown in the examples, and then, gas composition in the packaging container was measured immediately after sealing, one day after the sealing, and 10 days after the sealing.
  • Table 1 gas composition in the packaging container was measured immediately after sealing, one day after the sealing, and 10 days after the sealing.
  • Table 1 gas composition in the packaging container was measured immediately after sealing, one day after the sealing, and 10 days after the sealing.
  • Table 1 gas composition in the packaging container was measured immediately after sealing, one day after the sealing, and 10 days after the sealing.
  • Table 1 gas composition in the packaging container was measured immediately after sealing, one day after the sealing, and 10 days after the sealing.
  • Table 1 gas composition in the packaging container was measured immediately after sealing, one day after the sealing, and 10 days after the sealing.
  • Table 1 gas composition in the packaging container was measured immediately after sealing
  • the gas displacement is performed after the deaeration in the chamber, thus the air in the space and the content in the packaging container can be displaced by gas at a high rate of displacement in comparison with the gas flush type gas displacement method.
  • Seal packaging requires no heat-shrinkable film, thus reducing the number of packaging materials to be used, and entrepreneur's bearing of cost based on the Container and Package Recycling Law.
  • the overlapping ridges of the receptacle and the lid can be sealed with the band tape to enclose the packaging container, so that even if the shape or the size of the packaging containers changes when performing packaging by using a device, a height of the band tape may be only adjusted to match a height of the overlapping ridges of the receptacle and the lid.
  • Example 1 Example 2
  • Example 3 Example 4
  • Example 5 Example 6 Comparative example 1 Multilayer film Layer configuration Outermost layer Thickness ( ⁇ m) PP Coextrusion 7 NY Coextrusion 5 NY Coextrusion 5 NY Coextrusion 5 NY Coextrusion 5 PP Coextrusion 7 Internal layer Thickness ( ⁇ m) Adhesive layer Coextrusion 5 EVOH Coextrusion 5 EVOH Coextrusion 5 EVOH Coextrusion 5 Adhesive layer Coextrusion 5 Internal layer Thickness ( ⁇ m) EVOH Coextrusion 6 NY Coextrusion 5 NY Coextrusion 5 NY Coextrusion 5 NY Coextrusion 5 NY Coextrusion 5 EVOH Coextrusion 6 Internal layer Thickness ( ⁇ m) Adhesive layer Coextrusion 5 Adhesive layer Coextrusion 5 Adhesive layer Coextrusion 5 Adhesive layer Coextrusion 5 Adhesive layer Coextrusion 5 Adhesive layer Coextrusion 5 Adhes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Packages (AREA)

Claims (8)

  1. Verfahren zur Herstellung einer Gasverdrängungsverpackung, wobei ein Behälter ein Gefäß (10) und einen Deckel (20) umfasst, das Gefäß und der Deckel an jeweiligen Randteilen miteinander überlappen, so dass die Oberseite des Gefäßes abgedeckt ist, die überlappenden Teile mit einem Klebeband (30) abgedichtet werden, das Gefäß (10) und der Deckel (20) an ihren Randteilen Flansche aufweisen, die horizontale Teile (12, 22), welche sich von ihren Öffnungen ausgehend horizontal erstrecken, im Wesentlichen senkrechte Teile (13, 23), welche sich von Enden der horizontalen Teile ausgehend erstrecken, und Grate (14, 24) an Grenzen zwischen den horizontalen und den senkrechten Teilen umfassen, dadurch gekennzeichnet, dass der Behälter ein Loch (40) aufweist, Luft in dem Behälter durch das Loch (40) ausgestoßen und durch ein anderes Gas als Luft verdrängt wird und dann das Loch (40) mittels eines Klebeetiketts (50) dicht verschlossen wird, wobei von den senkrechten Teilen (13, 23) der Flansche der senkrechte Teil (13), der sich in Bezug auf den Behälter innerhalb des anderen befindet, länger ist als der senkrechte Teil (23), der sich in Bezug auf den Behälter außerhalb befindet, der innere senkrechte Teil (13) einen Abstufungsbereich (81) an einem Teil in Kontakt mit einem Ende des äußeren senkrechten Teils aufweist und das Klebeband (30) zum Abdichten über den Abstufungsbereich (81) geheftet wird.
  2. Verfahren zur Herstellung einer Gasverdrängungsverpackung gemäß Anspruch 1, dadurch gekennzeichnet, dass der Behälter aus Kunststoff besteht.
  3. Verfahren zur Herstellung einer Gasverdrängungsverpackung gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Behälter, das Klebeband (30) und das Klebeetikett (50) eine Gasbarriereneigenschaft aufweisen.
  4. Verfahren zur Herstellung einer Gasverdrängungsverpackung gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, dass sich das Loch (40) für die Gasverdrängung auf einer oberen Fläche des Deckels (20) befindet.
  5. Verfahren zur Herstellung einer Gasverdrängungsverpackung gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, dass sich die senkrechten Teile (13, 23) der Flansche ausgehend von den horizontalen Teilen (12, 22) senkrecht nach unten erstrecken.
  6. Gasverdrängungsverpackungsbehälter, der ein Gefäß (10) und einen Deckel (20) umfasst, die an ihren überlappenden Randteilen Flansche (11, 21) aufweisen, die horizontale Teile (12, 22), welche sich von ihren Öffnungen ausgehend horizontal erstrecken und im Wesentlichen senkrechte Teile, welche sich von Enden der horizontalen Teile ausgehend erstrecken, umfassen, wobei die überlappenden Teile mit einem Klebeband (30) abgedichtet werden, dadurch gekennzeichnet, dass von den Flanschen (11, 21) der senkrechte Teil (13), der sich in Bezug auf den Behälter innerhalb des anderen befindet, länger ist als der senkrechte Teil (23), der sich in Bezug auf den Behälter außerhalb befindet, und der innere senkrechte Teil einen Abstufungsbereich (81) an einem Teil in Kontakt mit einem Ende des äußeren senkrechten Teils (23) aufweist, das Klebeband über den Abstufungsbereich geheftet wird, wobei der Behälter ein Loch aufweist, das mittels eines Klebeetiketts (50) dicht verschlossen wird.
  7. Verpackungsbehälter gemäß Anspruch 6, dadurch gekennzeichnet, dass ein Grat (24) des Deckels und/oder ein Grat (14) des Gefäßes Vertiefungen (15) aufweist, die so geformt sind, dass der senkrechte Teil nach innen eingedrückt ist und der horizontale Teil nach unten eingedrückt ist.
  8. Verpackungsbehälter gemäß Anspruch 6, dadurch gekennzeichnet, dass der Verpackungsbehälter eine verstärkende Fläche (82) aufweist, die sich ausgehend von dem Ende des inneren senkrechten Teils horizontal nach außen erstreckt.
EP02790783A 2001-12-20 2002-12-16 Verfahren zur herstellung eines gasaustauschpakets Expired - Lifetime EP1466840B1 (de)

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JP2001388195 2001-12-20
JP2001388195 2001-12-20
PCT/JP2002/013139 WO2003053809A1 (fr) 2001-12-20 2002-12-16 Procede permettant de produire un emballage sous atmosphere modifiee

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EP1466840A4 EP1466840A4 (de) 2009-01-28
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ITMO20040307A1 (it) * 2004-11-22 2005-02-22 Coopbox Europ S P A Vaschetta in materiale plastico per il confezionamento di alimenti suscettibili di rilasciare liquidi.
CN101723138A (zh) * 2009-12-02 2010-06-09 徐晋 肉夹馍派及其包装方法
FR3005937B1 (fr) * 2013-05-24 2015-10-16 Selenium Medical Emballage, de preference medical, et ensemble d'emballages correspondant
CN108382740B (zh) * 2018-02-28 2019-07-05 山东小麦歌环保科技有限公司 卫生安全环保食品包装盒及其生产方法
CN110255462B (zh) * 2019-08-01 2020-12-01 聊城市孚德食品有限公司 一种海鲜罐头密封流水生产装置
CN115196069B (zh) * 2022-09-15 2022-11-29 沧州市金三洋塑业有限公司 一种闭合收尾式惰性气体填充型保鲜膜包装盒

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US3452921A (en) * 1967-09-13 1969-07-01 Monsanto Co Sealed container
JPS5529407A (en) * 1978-08-03 1980-03-01 Keiichi Isotani Preservation gas filling method and apparatus for packed body
JPS5962468A (ja) * 1982-10-04 1984-04-09 東洋インキ製造株式会社 印刷インキを容器に充填包装する方法
US4548852A (en) * 1983-05-02 1985-10-22 Pakor, Inc. Method and apparatus for packaging perishable products in a reduced air atmosphere
EP0197073B1 (de) * 1984-10-05 1989-05-10 Cod Inter Techniques Sa Dicht verschlossener behälter, dessen herstellung und verwendung
DE8433828U1 (de) * 1984-11-17 1985-01-10 Marienfeld, Gerd, 6970 Lauda-Königshofen Verpackung mit Objekttraegern
JPH0266450U (de) * 1988-11-11 1990-05-18
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JP2000318709A (ja) * 1999-05-11 2000-11-21 Furukawa Mfg Co Ltd 真空ガス置換包装装置
JP4108881B2 (ja) * 1999-07-30 2008-06-25 岐阜プラスチック工業株式会社 運搬用容器

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AU2002366767A1 (en) 2003-07-09
KR100689167B1 (ko) 2007-03-09
EP1466840A1 (de) 2004-10-13
CN1606525B (zh) 2012-05-23
EP1466840A4 (de) 2009-01-28
CA2471233A1 (en) 2003-07-03
DE60236372D1 (de) 2010-06-24
WO2003053809A1 (fr) 2003-07-03
KR20040072664A (ko) 2004-08-18
CN1606525A (zh) 2005-04-13

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