US20040251164A1 - Atmosphere improving tape for package package with atmosphere improving tape and method of manufacturing the package package container with atmosphere improving tape engaging device an package with engaging device - Google Patents

Atmosphere improving tape for package package with atmosphere improving tape and method of manufacturing the package package container with atmosphere improving tape engaging device an package with engaging device Download PDF

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Publication number
US20040251164A1
US20040251164A1 US10/494,323 US49432304A US2004251164A1 US 20040251164 A1 US20040251164 A1 US 20040251164A1 US 49432304 A US49432304 A US 49432304A US 2004251164 A1 US2004251164 A1 US 2004251164A1
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Prior art keywords
atmosphere improving
package
tape
atmosphere
section
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.)
Abandoned
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US10/494,323
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English (en)
Inventor
Tetsurou Yasuike
Masato Doi
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.)
Idemitsu Unitech Co Ltd
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Idemitsu Unitech Co Ltd
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Filing date
Publication date
Priority claimed from JP2001336866A external-priority patent/JP3964181B2/ja
Priority claimed from JP2001336865A external-priority patent/JP3943898B2/ja
Priority claimed from JP2002015764A external-priority patent/JP3946529B2/ja
Priority claimed from JP2002142943A external-priority patent/JP3943990B2/ja
Application filed by Idemitsu Unitech Co Ltd filed Critical Idemitsu Unitech Co Ltd
Assigned to IDEMITSU UNITECH CO., LTD. reassignment IDEMITSU UNITECH CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOI, MASATO, YASUIKE, TETSUROU
Publication of US20040251164A1 publication Critical patent/US20040251164A1/en
Priority to US11/608,628 priority Critical patent/US20070122573A1/en
Abandoned legal-status Critical Current

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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
    • 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
    • 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
    • B65D81/266—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 for absorbing gases, e.g. oxygen absorbers or desiccants
    • B65D81/268—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 for absorbing gases, e.g. oxygen absorbers or desiccants the absorber being enclosed in a small pack, e.g. bag, included in the package

Definitions

  • the present invention relates to an atmosphere improving tape for a package, a package with the atmosphere improving tape and a method of manufacturing the same, a packaging container with the atmosphere improving tape, an engaging device (a zipper), and a package with the engaging device (the zipper).
  • a still further object of the present invention is to provide the excellent moldability as well as the excellent capability for improving atmosphere.
  • the tape can easily be fixed to package such as a packaging bag, it is not mixed in or mistook for a product packaged therein, so that miss use of the atmosphere improving material never occurs.
  • a separate body such as a small bag is not required to be used, and the tape can be fixed to a package during the process of manufacturing the package, so that miss injection of the atmosphere improving material never occurs.
  • an atmosphere improving material into a packaging material is not required, and the atmosphere improving tape for a package can discretely be fixed to a packaging material such as a sheet in use, and as it is not necessary to take into considerations a combination of an atmosphere improving material and a packaging material, a packaging material for a package such as a packaging bag can freely be selected.
  • the atmosphere improving is contained in the tape portion, so that loss during the process of manufacturing the packaging material can be reduced, and therefore excessive load to the environment never occurs.
  • the atmosphere improving layer has a cross section coated with the thermoplastic resin layer, so that the atmosphere improving material never leaks from the atmosphere improving tape for a package, and therefore a product or the like in the package is never contaminated.
  • An atmosphere improving tape for a package according to the present invention comprises an atmosphere improving layer containing an atmosphere improving material therein, and a thermoplastic resin layer not containing an atmosphere improving material, and is characterized in that the atmosphere improving layer has a cross section with the thermoplastic resin layer laminated thereon.
  • any form of a cross section of the atmosphere improving tape for a package is allowable on the condition that the atmosphere improving layer has a cross section with the thermoplastic resin layer laminated thereon, and the employable forms include a form in which the atmosphere improving layer is exposed only in one direction, a form in which the atmosphere improving layer is laminated with two thermoplastic layers, and a form in which the thermoplastic resin layer is laminated on the atmosphere improving layer.
  • the atmosphere improving layer is made from a kneaded material comprising an atmosphere improving material and a thermoplastic body.
  • the atmosphere improving layer is made from a kneaded material comprising an atmosphere improving material and a thermoplastic body, the absorption rate is lower than that of powder, but the water-proof characteristics of the resin is improved, so that it is well suited to packaging of water-containing pouch-packed foods such as gruel.
  • the atmosphere improving material preferably contains at least any one of a water absorbing material, a drying agent, a volatile antibiotic agent, a volatile preservative against mold, a volatile antitick agent, a volatile insect repellent, a deodorant, a volatile antirust agent, a volatile animal repelling agent, a deoxidizing agent, and an absorbing agent.
  • an atmosphere improving material may be employed according to an application, so that the atmosphere improving tape for a package can be used for various applications.
  • the atmosphere improving materials available for this purpose include an oxygen absorbing agent (a deoxidizing agent), an absorbing agent, a deodorant, a water absorbing material, a drying agent, a volatile antibiotic agent, a preservative against mold, a volatile antitick agent, a volatile insect repellent, a volatile antirust agent, and a volatile animal repelling agent.
  • the absorbents available for this purpose include calcium oxide, an alumina drying agent, silica gel, magnesium salt, and zeolite.
  • the deodorants available for this purpose include silica gel, active alumina, titanium oxide, zinc oxide, carbon black, and zeolite.
  • the water absorbing materials available for this purpose include, polyacrylate, vinyl acetate-acrylate copolymer, degenerative bridged polyvinyl alcohol, ultra-fine water-absorbing acrylic textile, and thermoplastic polyethylene oxide.
  • the drying agents available for this purpose include calcium oxide, an alumina drying agent, silica gel, magnesium salt, and zeolite.
  • the volatile antibiotic agents available for this purpose include isocyanic acid compounds, Japanese cypress thiol, oil extracted from bamboo, oil extracted from beefsteak plant, and thiazolyl sulfamide compounds.
  • the volatile preservatives against mold available for this purpose include organic tin compounds, organic sulfur compounds, chlorine-based compounds, phenol-based compounds, and thymol.
  • the volatile antitick agents available for this purpose include allethrin, tetramethrin, lesmethrin, phenotoframethrin, permethrin, diphenothrin, tralomethrin, empenthrin, DDVP, fenithion, temephos, diflubenzron, buprofedin, pyriproxiphen, and mentha oil.
  • the volatile insect repellants available for this purpose include cresol, O-phenyl phenol, parathion, and imidazole.
  • the volatile antirust agents available for this purpose include biannulate benzoazole compounds, monoannulate imidazole, triazole, rosin, diisopropyl nitrite ammonium, benzoic acid, cabrylic acid, dicyclohexil nitrite ammonium, dicyclo carbonate ammonium, and nitrite.
  • the atmosphere improving material in a case where the atmosphere improving material is kneaded in a thermoplastic resin, in a case where the thermoplastic resin is unwoven cloth and the atmosphere improving material is mixed in the thermoplastic resin layer, in a case where the atmosphere improving material is present in a form of fiber or particles, and in a case where the atmosphere improving is infiltrated in fiber, various forms such as the atmosphere improving material blended with thermoplastic resin powder may be employed.
  • thermoplastic resin layer various forms including a resin form, a sheet-like form, an unwoven cloth form, and synthetic paper may be employed.
  • an edge section of the atmosphere improving tape there is no restriction over a form of an edge section of the atmosphere improving tape, and any configuration is allowable including that in which an edge section of the tape has a straight form, that in which an edge of the tape has a semi-circular form, and that in which at least the atmosphere improving layer portion in the edge section of the tape is notched with a semi-circular form.
  • the package with the atmosphere improving tape according to the present invention is formed by sealing a peripheral edge of the sheet to protect the contents from exposure to airs and is characterized in that the atmosphere improving tape for a package described above is thermally adhered in a continuous form to an internal surface of the sheet when the package with the atmosphere improving tape is formed.
  • the packaging container with the atmosphere improving tape is one comprising a molded container having a multilayered sheet with a peelable surface layer formed along the open edge thereof, and a covering member thermally adhered to the peripheral edge of the molded container, and the covering member has the atmosphere improving tape described above thermally adhered to the internal surface thereof, and is adhered to the molded container with the atmosphere improving tape for a package therebetween, and because of the configuration, when the covering member is peeled off, also the surface layer is peeled off together.
  • the covering member has the atmosphere improving tape for a package thermally adhered thereto, different from the case where a sheet having the atmosphere improving layer is formed as a sheet, the covering member is a body completely separated from the atmosphere improving tape for a package, and therefore the atmosphere improving capability can easily be given to the packaging container.
  • the covering member is adhered to the molded container with the atmosphere improving tape for a package held therebetween, and when the covering member is peeled off, it is peeled together with the surface layer, and because of the configuration, the covering member can be peeled off from the molded container without exposing the atmosphere improving layer, and therefore leakage of the atmosphere improving material never occurs.
  • the zipper according to the present invention comprises a male member and a female member, and the male member and the female member have a belt-formed base section and an engagement section having an engaging function respectively, and are characterized in that an atmosphere improving layer containing an atmosphere improving material therein is provided in the belt-formed base section and/or in the engagement section.
  • An engagement section is formed on the same plain as that of the belt-formed base section.
  • a form of the male member is different from that of the female section, and in a case of the male member, a form of the cross section is, for instance, of a heart shape, and a form of the female section's cross section is, for instance, of a shape like and arc.
  • the engagement section of the male section and that of the female section engage each other.
  • a material for the base member such materials as PET (polyethylene telephtalate), NY (nylon), and CPP (cast polypropylene) may be employed.
  • polyolefin As a material for the sealant layer, polyolefin is preferable because the same material as that for the engagement section can easily be fused thermally thereto, and for instance, such materials as LLDPE (linear low density polyethylene), LDPE (low density polyethylene) and PP (polypropylene) may be employed.
  • LLDPE linear low density polyethylene
  • LDPE low density polyethylene
  • PP polypropylene
  • the atmosphere improving tape preferably has the adhesion strength between the atmosphere improving layer and the thermoplastic resin layer of 500 g/15 mm width or more.
  • the method of manufacturing the package with the atmosphere improving tape according to the present invention is one for manufacturing a package with an atmosphere improving tape comprising a main body of the package for blocking exposure of the contents to air and an atmosphere improving tape thermally adhered to inside of the main body of the package for improving atmosphere inside the package, and the method comprises a notch forming step of forming notched holes with a prespecified space therebetween on the atmosphere improving tape; a tape adhering step of thermally adhering the atmosphere improving tape with the notched holes formed thereon to either one of the overlaid sheets; a sheet adhering step of thermally adhering the sheets overlaid on each other; and a sheet cutting step of cutting the thermally adhered sections of the sheets at positions for dividing each notched hole.
  • the sheet as used herein includes a laminated sheet comprising a plurality of sheets laminated on each other, and a monolayer sheet made from a single material.
  • any type of laminated sheet may be used on the conditions that the sheet comprises a base material and a sealant.
  • the sealant means a sheet functioning for adhesion between the sheets when a package is manufactured.
  • PET polyethylene telephthalate
  • a polyolefin-based resin as a sealant
  • a laminated sheet made from such materials as PET/CPP (nil-ductility polypropylene), PET/LLDPE (linear low density polyethylene), PET/LDPE (low density polyethylene) and the like may be employed.
  • ONY ductile nylon
  • a polyolefin-based resin as a sealant
  • a laminated sheet made from such materials as ONY/CPP, ONY/LLDPE, and ONY/LDPE or the like may be employed.
  • a laminated sheet made from such materials as PET/ONY/CPP, PET/ONY/LLDPE, and PET/ONY/LDPE or the like may be employed.
  • a combination as ceramic-deposited PET/ONY as a base material and a polyolefin-based resin as a sealant a combination of ceramic-deposited PET/ONY as a base material and a polyolefin-based resin as a sealant, a combination of ONY/EVOH (ethylene-vinyl alcohol copolymer) as a base material and a polyolefin-based resin as a sealant, and a combination of PET/ONY/AL (aluminum) as a base material and a polyolefin-based resin as a sealant may be employed.
  • the polyolefin-based resin available for this purpose includes CPP, LLDPE, and LDPE.
  • a resin made of a material which can easily be adhered thermally to or separated from the made material may be employed as a sealant.
  • materials such materials as EVA (ethylene vinyl acetate), a polyolefin-based resin with rubber such as SBS (styrene-butadiene-styrene) rubber or EPR (ethylene-propylene rubber) kneaded therein, and a mixture of PP (polypropylene) and PE (polyethylene).
  • a multilayered sheet such as PP/EVOH/PP or PS (polystyrene)/EVOH/PE or the like may be employed.
  • a sheet made from such material as PS, PP, and PE may be employed.
  • the PE includes LLDPE, LDPE, or the like. It is to be noted that the sheet as used herein indicates a concept encompassing even a film with the relatively small thickness.
  • FIG. 1 is a cross-sectional view showing an atmosphere improving tape for a package according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing a variant of a form of a cross section of the atmosphere improving tape for a package according to the first embodiment
  • FIG. 3 is a flat view showing a package in the first embodiment above;
  • FIG. 4 is a cross-sectional view showing a package in the first embodiment above;
  • FIG. 5 is a view showing a process of manufacturing the package in the first embodiment above;
  • FIG. 6 is a cross-sectional view showing a packaging container according to a second embodiment of the present invention.
  • FIG. 7 is a flat view showing a package according to a third embodiment of the present invention.
  • FIG. 8 is a cross-sectional view showing a zipper in the third embodiment of the present invention.
  • FIG. 9 is a view showing a process of manufacturing the package according to a fourth embodiment of the present invention.
  • FIG. 10 (FIG. 1O(A) to FIG. 10(B) is a cross-sectional view showing a variant of the fourth embodiment above;
  • FIG. 11 is a cross-sectional view showing a packaging container according to a sixth embodiment of the present invention.
  • FIG. 12 is a flat view showing a package with an atmosphere improving tape according to a seventh embodiment of the present invention.
  • FIG. 13 is a cross-sectional view showing an atmosphere improving tape in the embodiment shown in FIG. 12;
  • FIG. 14 is a general view showing a device for manufacturing a package with an atmosphere improving tape in the embodiment shown in FIG. 12;
  • FIG. 17 is a view showing the state where the sheets in the embodiment shown in FIG. 12 have been overlaid on each other;
  • FIG. 21 is a view showing a variant of the cross section of the atmosphere improving tape
  • FIG. 23 is a partial flat view showing a second variant of the edge section of the atmosphere improving tape above.
  • This multilayered sheet comprises, from the side of the fissile layer 50 A, a fissile layer made of high density polyethylene; a base material layer made of polypropylene; an adhesive layer made of maleic acid anhydrate degenerated polypropylene; a gas barrier layer made of ethylene-vinyl alcohol copolymer; an adhesive layer made of maleic acid anhydrate degenerated polypropylene; and a base material layer made of polypropylene.
  • the atmosphere improving materials there can be enlisted, in addition to a water absorbing material, a drying agent, a volatile antirust agent, and a deoxidizing agent, a volatile antibiotic agent, a volatile preservative against mold, a volatile antitick agent, a volatile insect repellent, a deodorant, a volatile animal repelling agent, an absorbent, or a mixture thereof.
  • the deodorant there can be enlisted such materials as silica gel, active alumina, titanium oxide, zinc oxide, carbon black, and zeolite.
  • volatile antirust agents there can be enlisted such materials as biannulate benzoazole compounds, mononuclear imidazole, triazole, rosin, diisopropyl nitrite ammonium, benzoic acid, cabrylic acid, dicyclohexil nitrite ammonium, dicyclo carbonate ammonium, and nitrite.
  • volatile animal-repelling agents there can be enlisted such materials as pyrethrin, rotenone, phthalthrin, allethrin, permetrin, cybermethrin, alpha cybermethrin, phenothrin, diphenothrin, menthol, Japanese cypress oil, Japanese cedar oil, Hiba oil, dithiocarbamoryl sulfide compounds, cynnamic aldehide, and linalool.
  • materials as pyrethrin, rotenone, phthalthrin, allethrin, permetrin, cybermethrin, alpha cybermethrin, phenothrin, diphenothrin, menthol, Japanese cypress oil, Japanese cedar oil, Hiba oil, dithiocarbamoryl sulfide compounds, cynnamic aldehide, and linalool.
  • the multilayer and different form extrusion method was employed as a method of manufacturing the atmosphere improving tape 10 for a package and the zipper 14 in the embodiment described above, but the present invention is not limited to this case, and various method can be employed including a method in which an oxygen absorbing material is filled in a thermoplastic resin tube and is thermally applied, for instance, by a heating roller, a method in which an oxygen absorbing material is filled between unwoven or woven clothes made of a thermoplastic resin, covered with a thermoplastic resin sheet or the like, and is thermally applied, a method in which an oxygen absorbing resin is filled in a thermoplastic resin tube, or the like.
  • Forms of the package 1 , 3 include a portrait type pillow bag, a landscape type pillow bag, a bag sealed along four edges, a bag sealed along three edges, a gazette bag, a self-sustaining bag, a folded box, and the like, although a bag sealed along three edges is employed in the embodiments described above.
  • the atmosphere improving tape 10 for a package was adhered near an area opposite to an opening section of the package or on a rear surface of the cover member of the packaging container in the embodiment described above, but the present invention is not limited to this case, and the atmosphere improving tape 10 for a package can be adhered in any portion such as an intermediate portion of the opening section, or on the entire surface of the cover member of the packaging container, or on an internal surface of the packaging container.
  • NY (nylon) and LLDPE linear low density polyethylene
  • PET polyethylene telephthalate
  • CPP cast polypropylene
  • LDPE low density polyethylene
  • PP polypropylene
  • the atmosphere improving tape 10 for a package (capable of absorbing water) was manufactured under the following conditions.
  • Thermoplastic resin layer 10 B LLDPE (produced by Idemitsu Polyethylene, 0238 CN)
  • the production rate was 25 m/min (discharge rate: 13 Kg/hour)
  • Thickness T 2 of the atmosphere improving layer 10 A 200 ⁇ m
  • Thickness T 3 of the thermoplastic resin layer 10 B 50 ⁇ m
  • the package 1 was manufactured under the following conditions.
  • Example 1 Only in Example 1, holes each having the diameter of 2 mm were prepared on the atmosphere improving tape 10 for a package with a space of 5 mm in both the sideward and longitudinal directions, and then the package 1 was formed.
  • the bag-making rate was the same as that employed when the atmosphere improving tape 10 for a package was not applied, and the package 1 could easily be manufactured.
  • Thermoplastic resin layer 10 B LLDPE (Idemitsu Polyethylene 0238CN)
  • the atmosphere improving tape 10 for a package was cooled and pulled out after different form extrusion being cooled in a water bath, and odor due to the mentha oil was not generated, but the odor by mentha oil was generated in a feed injection hopper.
  • the extruder was of compact size, so that the problem of odor was easily solved only by providing an exhaust air duct on the feed injection hopper.
  • the sheet 30 in the package 1 had the width of 1000 mm and comprised O-nylon and LLDPE (15 ⁇ m and 60 ⁇ m respectively). A central portion of the heat sealed section was cut with a space of 1200 mm to obtain a package with the dimensions of 1000 mm ⁇ 1200 mm. Other conditions were the same as those employed in Example 1.
  • Atmosphere improving layer 10 A Resin prepared by adding granulized Japanese cypress thiol by 0.2% by weight to LLDPE
  • Thermoplastic layer 10 B LLDPE (Idemitsu polyethylene 0238CN)
  • the package 1 was manufacture under the following conditions.
  • the atmosphere improving tape 10 for a package (capable of preventing mold) was manufactured under the same conditions as those in Example 3 except that a resin prepared by adding orthophenyl phenol by 0.2% by weight to LLDPE was used for the atmosphere improving layer 10 A.
  • the package 1 was manufactured under the same conditions as those employed in Example 3.
  • the atmosphere improving tape 10 for a package (dry and with the deodorizing capability) was manufactured under the following conditions.
  • Atmosphere improving layer 10 A PP (the following PP) 40% by weight, calcinated lime 30% by weight, and active alumina 30% by weight pelletized by the hot cut system
  • Thermoplastic resin layer 10 B PP (manufactured by Idemitsu Petrochemical Co., Ltd., Idemitsu polypropylene E-304GP)
  • the atmosphere improving tape 10 for a package having the cross section as shown in FIG. 2(D) was manufactured.
  • the conditions for manufacture were the same as those employed in Example 3 except the point that OPP/CPP (40 ⁇ m/50 ⁇ m) were used in place of the O-nylon/LLDPE (15 ⁇ m/60 ⁇ m).
  • the atmosphere improving tape 10 for a package (having the animal repelling capability) was manufactured under the following conditions.
  • Atmosphere improving layer 10 A Resin prepared by adding cinnamic aldehyde by 1% by weight to LLDPE
  • Thermoplastic resin layer 10 B LLDPE (Idemitsu polyethylene 0238CN)
  • the atmosphere improving tape 10 for a package having the cross section as shown in FIG. 1 was manufactured under the conditions described above. Further a package with this atmosphere improving tape 10 for a package adhered thereon was manufactured under the same conditions as those employed in Example 2.
  • the atmosphere improving tape 10 for a package (with the antirust property) was manufactured under the following conditions.
  • Atmosphere improving layer 10 A Resin prepared by adding benzoic acid by 1% by weight to LLDPE
  • Thermoplastic resin layer 10 B LLDPE (Idemitsu polyethylene 0238CN)
  • the atmosphere improving tape 10 for a package having the cross section as shown in FIG. 1 was manufactured under the conditions as those employed in Example 2. Further a package with this atmosphere improving tape 10 for a package adhered thereto was manufactured under the same conditions as those employed in Example 2.
  • the packaging container according to the second embodiment of the present invention was manufactured. Specifically, a base material sheet 41 (polyethylene telephthalate (12 ⁇ m)/nylon (15 ⁇ m). ethylene-vinyl alcohol copolymer (12 ⁇ m)/linear low density polyethylene (50 ⁇ m)) for forming a cover member with the width of 100 mm was fed out from a cover material feed-out section of a successive cup sealer, and was thermally adhered to the atmosphere improving tape 10 for a package being inserted from the LLDPE side.
  • a base material sheet 41 polyethylene telephthalate (12 ⁇ m)/nylon (15 ⁇ m). ethylene-vinyl alcohol copolymer (12 ⁇ m)/linear low density polyethylene (50 ⁇ m)
  • the molded container 50 had the outer diameter of 80 mm ⁇ and the depth of 20 mm, and then a gear with the diameter of 70 mm ⁇ was filled in the molded container 50 with the cover member thermally adhered to the molded container 50 .
  • Layer structure of the molded container 50 was high density polyethylene (20 ⁇ m)/polypropylene (150 ⁇ m)/maleic acid anhydrate degenerated polypropylene (10 ⁇ m)/ethylene-vinyl alcohol copolymer (20 ⁇ m)/maletic acid anhydrate degenerated polypropylene (10 ⁇ m)/polypropylene (150 ⁇ m), and the total thickness was 360 ⁇ m.
  • the interface adhesion strength between the high density polyethylene (20 ⁇ m) and the polypropylene (150 ⁇ m) was about 0.8 kg/15 mm in width.
  • the gear was put in the packaging container obtained in Example 8, and the package was left for two weeks at the temperature of 40° C. and under the relative humidity of 90%. Then the gear was checked for generation of rust, but rust was not observed.
  • opening the cover member as the high density polyethylene (20 ⁇ m) could be separated together with the cover member at the interface between the high density polyethylene (20 ⁇ m) and the polypropylene (150 ⁇ m) in the molded container, so that the packaging container could easily be opened.
  • Screw diameters of a single-spindle extruder of the multilayer different from extruding device were 30 mm ⁇ and 40 mm ⁇ respectively.
  • Atmosphere improving layers 12 C, 13 C Master batch in which the weight ratio of polypropylene (Idemitsu polypro E-170 GM) and iron powder-based deoxidizing agent (comprising iron powder with the bulk specific weight of 2.0 or more and specific surface area of 0.5 or more and salt of 60:40
  • a package was manufactured under the same conditions as those employed in Example 1 except that the atmosphere improving tape 10 for a package (with the water-absorbing capability) was not used.
  • a package was manufactured under the same conditions as those employed in Example 2 except that the atmosphere improving tape 10 for a package (with the antitick property) was not used.
  • a package was manufacture under the same conditions as those employed in Example 3 except that the atmosphere improving tape 10 for a package was not used.
  • the petri plate with the yellow staphylococci spread thereon was packaged with the package 1 described above, and the opening section 20 was tight-sealed with an impulse sealer. After the sample was left for 5 days at 35° C., a number of colonies of yellow staphylococci were observed.
  • a package was manufactured under the same conditions as those employed in Example 6 except that the atmosphere improving tape 10 for a package (dried and having the deodorizing capability) was not used.
  • a package was manufactured under the same conditions as those employed in Example 7 except that the atmosphere improving tape 10 for a package (having the animal repelling capability) was not used.
  • a packaging container was manufactured under the same conditions as those employed in Example 8 except that the atmosphere improving tape 10 for a package (with the antirust property) was not used.
  • a gear was put in the packaging container obtained as described above, and the package was left for two weeks at the temperature of 40° C. and the relative humidity of 90%. Then the gear was checked for generation of rust, and brown rust was generated at the contacting portion between the gear and the molded container.
  • a package was manufactured under the same conditions as those employed in Example 9 except that the atmosphere improving layer (having the oxygen absorbing capability) was not used with the zipper 14 .
  • a three layered sheet was manufactured with three units of extrusion device comprising screw diameter of 50 mm ⁇ , 65 mm ⁇ and 50 mm ⁇ respectively and a coextrusion T die casting sheet manufacturing unit with a 900 mm T die and an air knife pick up device installed.
  • the configuration of this three layered sheet was LLDPE/LLDPE with prescribed menthe oil added with 1 weight/and LLDPE, corresponding to the three units of extrusion device respectively. Then a package was manufactured liken in Example 2.
  • Example 2 Compared to the case of Example 2 where an atmosphere improving tape for a package was used, the system was large-scale and large quantity of resin was discharged, so that the odor by the menthe oil was mostly generated in a T die and the problem of odor was not easily solved.
  • a cover member was manufactured under the same conditions as those in Example 8. Meanwhile a molded container similar to that in Example 8 was made from a monolayer polyethylene sheet having the total thickness of 340 ⁇ m, and a gear was put in the molded container liken in Example 8.
  • Example 2 Also comparing Example 2 and Comparative Example 10, as an atmosphere improving tape for a package was used in Example 2, the amount of atmosphere improving material was little, and so that the problem of odor and the like was not generated.
  • FIG. 1 shows a form of a cross section of a lengthy oxygen absorbing tape 10 according to a fourth embodiment of the present invention.
  • the oxygen absorbing tape 10 comprises an inner oxygen absorbing layer 10 A having a rectangular form and an outer thermoplastic resin layer 10 B surrounding the oxygen absorbing layer 10 A.
  • materials for the oxygen absorbing layer 10 A and the thermoplastic resin layer 10 B are injection-molded by means of the multilayer and different form extrusion molding method with a multilayer and different form extrusion molding device comprising two units of mono-axial extruders, and the oxygen absorbing tape 10 in FIG. 1 is molded.
  • a package 1 which is a package with an oxygen absorbing tape comprising two rectangular sheets 30 according to the fourth embodiment of the present invention is shown in FIG. 2 and FIG. 3.
  • the package 1 comprises two sheets 30 , 30 , and the oxygen absorbing tape 10 .
  • the sheets 30 , 30 are overlaid on each other with one shorter edge of each sheet defining an opening section 20 , and the remaining three edge sections form a heat-sealed section 21 .
  • the oxygen absorbing tape 10 is adhered to an internal surface of the package 1 in parallel to the opening section 20 at a position close to the shorter edge side in the opposite side from the opening section 20 .
  • Two sheets 30 are continuously fed to a bag-making machine (not shown), and at the same time also the oxygen absorbing tape 10 is fed to the bag-making machine.
  • the oxygen absorbing tape 10 is cut in the same length as that of the short edge of the package 1 to be processed in a bag, and then adhered to a sheet 30 along the longitudinal direction of the sheet 30 and also with the edge of the oxygen absorbing tape 10 reaching to the peripheral section of the sheet 30 , with a heating roll (not shown) incorporated in the bag-making machine (tape adhering step, FIG. 9(A)).
  • sheets 30 , 30 heat-sealed continuously following the form of squared U shape are cut along a central line of the partitioned section 22 (sheet cutting step, FIG. 9(C)).
  • the oxygen absorbing tape 10 comprising the oxygen absorbing layer 10 A and the thermoplastic resin 10 B has a cross section where the oxygen absorbing layer 10 A is coated with the thermoplastic resin 10 B, different from the case where a sheet having an oxygen absorbing layer itself is manufactured as a package 1 , the oxygen absorbing tape 10 is only thermally adhered to inside of the package 1 , so that the manufacturing process is very simple and the production cost is low, and further the capability of oxygen absorbing can easily be given to the package 1 .
  • Two sheets 30 are successively fed to a bag-making machine (not shown), and also the oxygen absorbing tape 10 is fed to the bag-making machine.
  • the oxygen absorbing tape 10 is fused with the same length as that of the sheet 30 to the sheet 30 by a heating roller incorporated in the bag-making machine so that the tape 10 is in parallel to the longitudinal direction of the sheet 30 and an edge of the oxygen absorbing tape 10 reaches a peripheral edge section of the sheet 30 (tape adhering step, FIG. 5(A)).
  • Another sheet 30 is overlaid on the sheet 30 with the oxygen absorbing tape 10 having been adhered thereto from above the oxygen absorbing tape 10 .
  • the overlaid portions of the oxygen absorbing tape 10 and the sheets 30 with the length of the opening section 20 of the package 2 are fused to each other by means of ultrasonic heat-sealing with the oxygen absorbing tape 10 therebetween to form a ultrasonically sealed section 23 .
  • the ultrasonically sealed section 23 is partitioned to pieces each having the same length as that of a shorter edge of the package 1 in the direction perpendicular to the longitudinal direction of the sheet 30 to form a partitioned section 22 . including the ultrasonically sealed section 23 .
  • heat sealing is continuously carried out along three edges forming a squared U shape including a shorter edge opposite to that forming the opening section 20 o the package 1 (seat adhering section, FIG. 5(A), (B)).
  • the oxygen absorbing tape 10 is provided between the sheets 30 and are ultrasonically sealed thereto, and because of this configuration, the sheets 30 are adhered to the oxygen absorbing tape 10 on both the top and bottom surfaces thereof, so that the oxygen absorbing tape can tightly be fixed to the package 2 .
  • the packaging container 3 comprises a cover member 40 and a molded container 50 as shown in FIG. 11.
  • the circular cover member 40 functions as a cover for the packaging container 3 with the circular peripheral portion adhered to the molded container 50 , and comprises a base material sheet 41 and the oxygen absorbing tape 10 adhered to the entire rear surface of the base material sheet 41 .
  • the oxygen absorbing tape 10 is adhered to the circular rear surface of the base material sheet 41 .
  • the molded container 50 comprises a side face section 52 standing upright from a periphery of a circular bottom surface of a bottom surface section 51 , an opening section 53 formed at the upper edge surrounded by this side face section 52 , and a flange section 54 extending outward from the periphery of this opening section 53 .
  • the side face section 52 has a tapered form tapering from the opening section 53 to the bottom surface section 51 , and a notch 55 extending along the entire periphery of the opening section 53 is formed in the side of the opening section 53 of the flange section 54 .
  • the molded container 50 has a 5-layer structure comprising a surface layer 50 A, a fissile layer 50 B, a base material layer 50 C, a gas barrier layer 50 D, and a base material layer 50 E, and of these four layers, a notch having a V-shaped cross section is provided only on the surface layer 50 A of the flange section 54 to form the notch 55 .
  • the gas barrier layer SOD is made of an ethylene-vinyl alcohol copolymer, and other layers are made of polypropylene.
  • the method of manufacturing the packaging container 3 is described below with reference to FIG. 9.
  • the oxygen absorbing tape 10 is thermally adhered by a heating roller to a rear surface of the base material sheet 41 cut into a circular form with a doughnut form corresponding to the circular periphery portion thereof to form the cover member 40 .
  • a position of the cover member 40 is adjusted so that the oxygen absorbing tape corresponds to the flange section 54 of the molded container 50 .
  • the oxygen absorbing tape 10 is adhered to an area near a surface opposite to an opening section of a package or on a rear surface of a cover member for a packaging container, but the present invention is not limited to these cases, and the oxygen absorbing tape can be adhered to any area such as an intermediate area of an opening of a package, and further may be adhered to any portions including the entire surface of the packaging container, a central portion of the cover member, and an internal surface of the packaging container.
  • thermoplastic layer 10 B in each of the embodiments described above (Refer to FIG. 1), but the present invention is not limited to this case, and various forms are allowable including a form in which a section around the circular oxygen absorbing layer 10 A is covered with the thermoplastic resin layer 10 B having a doughnut-like form (FIG. 10(A)), or a form in which a section around the circular oxygen absorbing layer 10 A is covered with the star-shaped thermoplastic resin layer 10 B (Refer to FIG. 10(B)).
  • the multilayer different form extrusion method was employed as a method of manufacturing the oxygen absorbing tape 10 in each of the embodiments described above, but the present invention is not limited to this case, and various methods may be employed including a method in which an oxygen absorbing material is filled in a thermoplastic resin tube and is thermally applied by a heating roller or the like, a method in which an oxygen absorbing material is filled between unwoven clothes or woven clothes made from a thermoplastic resin and is coated with the thermoplastic resin sheet or the like and is thermally applied thereto, and a method in which the oxygen absorbing material is inserted into a thermoplastic resin tube.
  • a three-side sealed bag was employed in each of the embodiments described above, but the present invention is not limited to this case, and various bag forms such as a portrait type pillow bag, a landscape type pillow bag, a bag sealed along four edges, a gazette bag, a self-sustaining bag, and the like.
  • the oxygen absorbing tape 10 is adhered to an area near a surface opposite to an opening section of a package, but the present invention is not limited to this case, and the oxygen absorbing tape 10 may be adhered to any section such an intermediate portion of the opening section of the package.
  • the oxygen absorbing tape 10 was manufactured under the following conditions.
  • the screw diameters of a single-spindle extruder in the multilayer different form device were 30 mm ⁇ and 40 mm ⁇ .
  • Oxygen absorbing layer 10 A Master batch with the mixing ratio of polypropylene (Idemitsu polypro E-170 GM) and iron powder-based oxygen absorbing agent (comprising iron powder with the bulk specific weight of 2.0 or more and the specific surface area of 0.5 or more and salt) of 60:40.
  • Thermoplastic resin layer 10 B Polypropylene (Idemitsu polypro E-170 GM)
  • the production rate is 25 m/min (discharge rate: 13 kg/hour), and loss of the oxygen absorbing tape 10 before the production process was stabilized was about 100 m (about 1 kg). Further the thickness of each layer of the oxygen absorbing tape 10 is as shown below.
  • Thickness T 1 , of the oxygen absorbing tape 10 300 ⁇ m
  • Width W 1 of the oxygen absorbing tape 30 mm
  • Thickness T 2 of the oxygen absorbing layer 10 A 200 ⁇ m
  • Thickness T 3 of the thermoplastic layer 10 B 50 ⁇ m
  • the package 1 was manufactured under the following conditions.
  • the oxygen absorbing tape 10 was manufactured like in Example 10.
  • the package 2 was manufactured under the following conditions.
  • Ultrasonic sealing was carried out with a ultrasonic phone with a tip having the dimensions of 35 mm ⁇ 20 mm.
  • the oxygen absorbing tape 10 was manufactured like in Example 10.
  • the package 2 was manufactured under the following conditions.
  • the package 3 was manufactured under the following conditions.
  • an adhesion force between the surface layer 50 A and the intermediate layer 50 B is weaker than that between the surface layer 50 A and the oxygen absorbing tape 10 .
  • the molded container 50 was manufactured by molding and curing Sheet Magic Top SEP grade produced by Idemitsu Unitech Co., ltd., having the configuration as described above.
  • the molded container 50 had the aperture diameter of 80 mm ⁇ , depth of 30 mm, and capacity of 80 ml.
  • the opening strength of the packaging container was 1.2 kg/15 mm, which indicated the excellent separability.
  • a bilayer oxygen absorbing sheet (thickness: 80 ⁇ m, and width: 600 mm) comprising an oxygen absorbing layer (thickness: 50 ⁇ m), and an external layer (thickness: 30 ⁇ m) was manufactured with the co-extrusion multilayered sheet extrusion device comprising two units of single-spindle extruders.
  • the screw diameters of the co-extrusion multilayered sheet extrusion device were 50 mm ⁇ and 60 mm ⁇ respectively.
  • Oxygen absorbing layer Master batch comprising polypropylene (Idemitsu polypro E-170GM) and ion powder-based oxygen absorbing agent (comprising iron powder with the bulk specific weight of 2.0 or more and the specific surface area of 0.5 or more and salt or the like) with the mixing ratio of 70:30
  • External layer Polypropylene (Idemitsu polypro E-170GM)
  • the production rate was 3.7 m/min (discharge rate: 13 kg/hour), and surface conditions of the oxygen absorbing sheet were adjusted with also the thickness adjusted, and the loss before the production process was stabilized was about 20 kg. Also the ear loss of about 20% by weight was always generated during the production.
  • the oxygen absorbing sheet completed as described above was subjected to dry laminating so that the nylon surface of the three-layered structure comprising polyethylene telephthalate/aluminum/nylon (thickness: 12 ⁇ m/7 ⁇ m/15 ⁇ m) previously prepared by dry-laminating was overlaid on the oxygen absorbing layer.
  • the ear loss of 5% by weight was generated during this dry laminating step.
  • the obtained five-layered sheet comprising polyethylene/aluminum/nylon/oxygen absorbing layer/polypropylene (thickness: 12 ⁇ m/7 ⁇ m/15 ⁇ m/50 ⁇ m/30 ⁇ m) was heat-sealed by the bag-making machine used in the fourth embodiment by sealing the three edges forming a squared U shape to obtain a package with the outer dimensions of 200 mm ⁇ 140 mm.
  • the oxygen absorbing tape (thickness: 300 ⁇ m, width: 30 mm) was manufactured like in Example 10. Although, in a cross section of the oxygen absorbing tape 10 , the rectangular oxygen absorbing layer 10 A was covered with the thermoplastic resin layer 10 B in Example 10, the oxygen absorbing tape 10 obtained in Comparative Example 12 was different from that obtained in Example 10 only in the point that it has only the sandwich-type three-layered structure comprising an outer layer (thickness: 50 ⁇ m), an oxygen absorbing layer (thickness: 200 ⁇ m), and an outer layer (thickness: 50 ⁇ m).
  • the production rate was 25 m/min (discharge rate: 13 kg/hour), and loss of the oxygen absorbing tape 10 before the production process was stabilized was about 100 m (about 1 kg).
  • the oxygen absorbing tape was manufactured like in Example 10.
  • the packaging container 3 was manufactured under the following conditions:
  • the adhesion force between the polypropylene and the ethylene-vinyl alcohol copolymer is substantially stronger than that between the polypropylene and the oxygen absorbing tape 10 .
  • the opening strength of the molded container was 3.5 kg/15 mm, and when it was tried to forcefully open it, the tape 10 could not be separated from the surface layer, and the packaging container remarkably deformed.
  • the oxygen gas density inside and around the openings of the packaging bodies was measured by means of gas chromatography before the processing for packing foods in the pouches, just after the processing packing foods in the pouches was finished, once for every two hours after the end of the processing packing foods in the pouches in the state where the samples were kept at 20° C., namely in 2 hours, 4 hours, and 6 hours after the end of the processing. Further, sensory tests were conducted for odor of the distilled water kept in each package after each sample was left for one month at the room temperature. The test result is shown in Table 1.
  • FIG. 12 is a cross-sectional view showing the atmosphere improving tape 10 .
  • the package 1 with an atmosphere improving tape comprises a main body 2 of the package for blocking contact of air with the contents, and the atmosphere improving tape 10 .
  • the main body 2 of the package is formed by thermally adhering the edge portions of the two sheets 30 overlaid on each other.
  • Sheets 60 , 61 in the main body 2 of the package are laminated sheets each having a three-layered structure of ONY (15 ⁇ m), EVOH (12 ⁇ m), and LLDPE (60 ⁇ m).
  • ONY 15 ⁇ m
  • EVOH 12 ⁇ m
  • LLDPE 60 ⁇ m
  • the atmosphere improving tape 10 is thermally adhered to inside of the main body 2 of the package.
  • the atmosphere improving tape 10 is thermally adhered onto an internal surface of the sheet 61 in parallel to the opening section 25 . More specifically the atmosphere improving tape 10 comprises, as shown in FIG. 13, the atmosphere improving layer 10 A containing an atmosphere improving material therein and the thermoplastic resin layer 10 B, and the atmosphere improving layer 10 A has a cross section coated with the thermoplastic resin layer 10 B.
  • the atmosphere improving layer 10 A is prepared by kneading PS (polystyrene) and an iron powder-based oxygen absorbing agent together.
  • the thermoplastic resin layer 10 B is made of LLDPE (linear low density polyethylene).
  • the adhesion force between the atmosphere improving layer 10 A and the thermoplastic resin layer 10 B is 500 g/15 mm in width.
  • the adhesion force was measured with a tensile tester at the tensile rate of 200 mm/minute at the separation degree (T-separation) of 180° C.
  • a substantially semicircular notched section 41 is formed at an edge section of the atmosphere improving tape 10 in its extending direction.
  • the width of an edge face of the notched section 41 is smaller than the width of the atmosphere improving tape 10 .
  • edge section of the atmosphere improving tape 10 in its extending direction is buried in the side heat-sealed sections 23 of the sheets 60 , 61 as well as in the ultrasonically sealed section 24 .
  • L1 indicates a length of the package 1 with the atmosphere improving tape in the longitudinal direction
  • L2 indicates the length in the sideward direction
  • L3 indicates the width of the heat-sealed section 22 in the bottom section.
  • D1 indicates a length of a diameter portion of the ultrasonically sealed section 24
  • D2 indicates a length of a diameter portion of the notched section 41
  • D3 indicates a length of the notched section 41 in the sideward direction.
  • T1 indicates a thickness of the atmosphere improving tape 10
  • T2 indicates a thickness of the atmosphere improving layer 10 A
  • W1 indicates a width of the atmosphere improving tape 10
  • W2 indicates a width of the atmosphere improving layer 10 A.
  • the dimensions may be changed within the range in which the objects of the present invention can be achieved.
  • FIG. 14 shows a device 5 for manufacturing the package 1 with an atmosphere improving tape.
  • the manufacturing device 5 comprises wind-up rollers 50 , 51 , 52 ; rollers 53 , 54 , 55 , 56 ; a punching device 40 ; a tape sealing device 30 ; ultrasonic sealing device 31 ; a sideward sealing device 32 , and a top-to-bottom sealing device 33 .
  • the sheet 60 is previously wound around and fed out from the wind-up roller 50 .
  • the atmosphere improving tape 10 is previously wound around and fed out from the wind-up roller 51 .
  • the sheet 61 is previously wound around and fed out from the wind-up roller 52 .
  • the sheets 60 and 61 are required to be wound around the wind-up rollers 50 and 52 so that the highly adhesive surfaces thereof face to each other.
  • the LLDPE layers of the sheets 60 and 61 face to each other. Any known roller may be used for the wind-up rollers 50 , 51 , and 52 .
  • the roller 53 is used to support the sheet 60 from the bottom side.
  • the roller 54 is used to support the sheet 60 from the bottom side, and the sheet 60 is hung down from this roller 54 .
  • the roller 55 supports the sheet 60 from the top side.
  • This roller 56 supports the sheet 61 and the atmosphere improving tape 10 from the bottom side. Any known roller may be used as the rollers 53 , 54 , 55 , and 56 .
  • the punching device 40 comprises a punch 40 A and a punch receiver 40 B, and is used to punch the atmosphere improving tape 10 .
  • the punch 40 A can punch a oval hole.
  • a form and size of a hole punched by the punch 40 A can be changed, and other forms of the holes punched by the punch 40 A include a circle, a triangle, a square, a pentagon, and other polygonal forms.
  • the punch receiver 40 B has a hole having a form and size corresponding to those of the punch 40 A, and supports the atmosphere improving tape 10 from the bottom side.
  • the tape sealing device 30 is used to heat-seal the atmosphere improving tape 10 to the sheet 61 .
  • the tape sealing device 30 comprises a seal receiving plate 30 A provided in the upper side and a tape sealing bar 30 B provided in the lower side.
  • the sheet receiving plate 30 A presses the atmosphere improving tape 10 to the tape sealing bar 30 B from the top side.
  • the tape sealing bar 30 B has a heating function, and heats the atmosphere improving tape 10 and the sheet 61 for thermally adhering them together.
  • the ultrasonic sealing device 31 comprises an ultrasonic horn section 31 A and an anvil 31 B, and adheres objects by making use of a heat locally generated by ultrasonic vibrations.
  • the ultrasonic sealing device 31 adheres the sheets 60 and 61 so that the areas around the holes on the atmosphere improving tape 10 formed by the punching device 40 are covered with each other.
  • the ultrasonic phone section 31 A generates ultrasonic vibrations.
  • a diameter of the ultrasonic phone section 31 A is 25 mm.
  • the anvil 31 B has a base of a truncated cone.
  • the anvil 31 B has a large bottom surface to endure physical shock or load, and can load a pressure in the axial direction to a small top surface.
  • the sideward sealing device 32 comprises sideward sealing bars 32 A, 32 B (each with the width of 25 mm).
  • the sideward sealing bars 32 A, 32 B are used to heat-seal the sheet 60 , atmosphere improving tape 10 , and sheet 61 overlaid on each other for forming the side heat-sealed section 23 of the package 1 with the atmosphere improving tape.
  • Both of the sideward sealing devices 32 have a heating function respectively and thermally adhere the sheet 60 , atmosphere improving tape 10 , and sheet 61 to each other.
  • the top-to-bottom sealing device 33 comprises top-to-bottom sealing bars 33 A, 33 B (with the thickness of 15 mm).
  • the top-to-bottom sealing device 33 heat-seals the sheet 60 and sheet 61 overlaid on each other to form a top-to-bottom heat-sealed section 22 of the package 1 with an atmosphere improving tape.
  • Both of the top-to-bottom sealing bars 33 A and 33 B have a heating function respectively for thermally adhering the sheet 60 and sheet 61 to each other.
  • FIG. 15 is a view showing a step of forming a notch on the atmosphere improving tape 10 with the punching device 40 .
  • FIG. 16 is a view showing a tape adhering step of the atmosphere improving tape 10 with the tape sealing device 30 .
  • FIG. 17 is a view showing the state where the sheets have been overlaid on each other after the tape adhering step.
  • FIG. 18 is a view showing an ultrasonically sealing step with the ultrasonic sealing device 31 .
  • FIG. 19 is a view showing a sheet adhering step with the sideward sealing device 32 and the top-to-bottom sealing device 33 .
  • FIG. 20 is a view showing a sheet cutting step of cutting a sheet along a central portion of the side heat-sealed section 23 .
  • the notched holes 42 are formed with the punching device 40 at a central portion of the atmosphere improving tape 10 with an even space therebetween.
  • the size of this notched hole 42 in the sideward direction of the atmosphere improving tape 10 is larger than the sideward size of the atmosphere improving layer 10 A, but is smaller than the width of the atmosphere improving tape 10 .
  • This notched hole 42 has an oval form with the sideward axis longer than the top-to-bottom axis (notch forming step).
  • the notched holes 42 each having the diameter of about 17 mm ⁇ is formed by the punching device 40 with a space of 120 mm.
  • the ultrasonically sealed section 24 (with the diameter of 25 mm) is formed in the state where it covers an area around the notched hole 42 on the atmosphere improving tape 10 .
  • This ultrasonically sealed section 24 is larger than the notched hole 42 .
  • the sheets 60 and 61 are overlaid on each other with the atmosphere improving tape 10 therebetween (ultrasonic sealing step).
  • the edges of the sheets 60 , 61 further from the section to which the atmosphere improving tape 10 has been thermally adhered is thermally adhered to each other in the horizontal direction against the longitudinal direction thereof to form the top-to-bottom heat-sealed section 22 (with the width of 15 mm) (sheet adhering step).
  • the sheet 60 , atmosphere improving tape 10 , and sheets 61 overlaid on each other is cut along a central portion of the side heat-sealed section 23 in the sideward direction and also a central portion of the notched hole 42 (sheet cutting step).
  • sheet cutting step the notched hole 42 is divided to two semi-circles to form the notched section 41 .
  • a material to be packaged is put therein from the opening section 25 , and then the opening section 25 is closed by heat sealing or the like.
  • the edge section of the atmosphere improving tape 10 in its extending direction is notched more as it gets closer to a central portion of the atmosphere improving tape 10 in the sideward direction.
  • the atmosphere improving layer 10 A is formed at a substantially central portion of the atmosphere improving tape 10 in the sideward direction. Therefore the distance from the edge section of the atmosphere improving tape 10 in its extending direction to the atmosphere improving layer 10 A is relatively large, so a quantity of an atmosphere improving material leaked from the atmosphere improving layer 10 A can further be reduced.
  • the laminated sheet of ONY/EVOH/LLDPE is employed as a material for the sheets 60 , 61 , but the present invention is not limited to this configuration, and other types of laminated sheets such as PET/CPP (not-drawn polypropylene), PET/LLDPE (linear low density polyethylene), PET/LDPE (low density polyethylene), ONY/CPP, ONY/LLDPE, ONY/LDPE, PET/ONY/CPP, PET/ONY/LLDPE, PET/ONY/LDPE or the like may be used in the present invention.
  • PET/CPP not-drawn polypropylene
  • PET/LLDPE linear low density polyethylene
  • PET/LDPE low density polyethylene
  • ONY/CPP ONY/LLDPE
  • ONY/LDPE ONY/LDPE
  • PET/ONY/CPP PET/ONY/LLDPE
  • PET/ONY/LDPE PET/ONY/LDPE or the like
  • the laminated sheets there can be enlisted such multilayered sheets as PP/EVOH/PP, or PS (polystyrene)/EVOH/PE or the like.
  • multilayered sheets as ceramics-deposited PET/ONY/PO (polyolefin-based resin), PE/ONY/AL(Aluminum)/PO or the like can be enlisted.
  • the polyolefin resins available in these cases include CPP, LLDP, and LDPE.
  • materials which can easily be adhered thermally or can easily be separated may be used as raw materials for preparing the sheets 60 , 61 .
  • EVA ethylene vinyl acetate
  • SBS styrene-butadiene-styrene
  • EPR ethylene-propylene rubber
  • a monolayer sheet may be used as the sheets 60 , 61 .
  • sheets made from such materials as PS, PP, and PE may be used.
  • PE such materials as LLDPE and LDPE can be enlisted.
  • the atmosphere improving layer 10 A of the atmosphere improving tape 10 comprises PS (polystyrene) and an iron powder-based oxidizing agent kneaded with each other, but the material available for this purpose is not limited to this case, and any configuration is allowable on the condition that an atmosphere improving material is contained therein, and for instance, a thermoplastic resin originally containing an atmosphere improving material or a thermoplastic resin with an atmosphere improving material kneaded therein may be used for this purpose.
  • thermoplastic resins originally containing an atmosphere improving material there can be enlisted a nanocomposite nylon resin having the oxygen absorbing capability, polyester with butane diol branched in the molecule or the like may be enlisted.
  • thermoplastic resin such polyolefin-based resins, for instance, PP, PE or the like can be enlisted.
  • PP polyolefin-based resins
  • PE polyolefin-based resins
  • CCP or the like can be enlisted as the PP.
  • a material which can easily be adhered thermally or can easily be separated may be added in the polyolefin-based rein or PS described above.
  • additives for instance, there can be enlisted such materials as EVA (ethylene vinyl acetate), polyolefin-based resins with such as rubber as SBS (styrene-bitadiene-styrene) rubber or EPR (thylene-propylene rubber) kneaded therein, a mixture of PP (polypropylene) and PE (polyethylene) or the like.
  • EVA ethylene vinyl acetate
  • SBS styrene-bitadiene-styrene
  • EPR thylene-propylene rubber
  • the atmosphere improving materials available for this purpose in addition to an oxygen absorbing agent, there can be enlisted such materials as a volatile antibiotic agent, a drying agent, a volatile antitick agent, a volatile insect repellent, a deodorizer, a volatile antirust agent, and a volatile animal repelling agent.
  • oxygen absorbing agents available for this purpose, in addition to iron, there can be enlisted such materials as, for instance, metallic powder of such metals as iron and zinc, oxides with low reducing capability of iron such as FeO, FeTiO 2 , and Fe 2 O 3 , organic metal complexes, compound of transitional metals, ascorbic acid, phenol-based substances, sulfite salt, hydrogen sulfite, tiosulfate salt, oxalates, pyrogallol, catechol, longalit, vitamin C, nanocomposite nylon resin, polyester with butane diol branched in the molecule, glucose, or the like.
  • metallic powder of such metals as iron and zinc oxides with low reducing capability of iron such as FeO, FeTiO 2 , and Fe 2 O 3
  • organic metal complexes compound of transitional metals
  • ascorbic acid phenol-based substances
  • sulfite salt hydrogen sulfite
  • tiosulfate salt
  • volatile antibiotic agents available for this purpose, there can be enlisted such materials as isocyanic acid compounds, Japanese cypress thiol, oil extracted from bamboo, oil extracted from beefsteak plant, and thiazolyl sulfamide compounds.
  • drying agents available for this purpose there can be enlisted such materials a, for instance, calcium oxide, an alumina drying agent, silica gel, magnesium salt, and zeolite.
  • the volatile antitick agents available for this purpose there can be enlisted such materials as allethrin, tetramethrin, lesmethrin, phenotoframethrin, permethrin, diphenothrin, tralomethrin, empenthrin, DDVP, fenithion, temephos, diflubenzron, buprofedin, pyriproxiphen, and mentha oil.
  • volatile insect repellants available for this purpose, there can be enlisted such materials as cresol, O-phenyl phenol, parathion, and imidazole.
  • deodorants available for this purpose there can be enlisted such materials as silica gel, active alumina, titanium oxide, zinc oxide, carbon black, and zeolite.
  • volatile antirust agents available for this purpose, there can be enlisted such materials as biannulate benzoazole compounds, monoannulate imidazole, triazole, rosin, diisopropyl nitrite ammonium, benzoic acid, cabrylic acid, dicyclohexil nitrite ammonium, dicyclo carbonate ammonium, and nitrite.
  • volatile animal-repelling agents available for this purpose, there can be enlisted such materials as pyrethrin, rotenone, phthalthrin, allethrin, permetrin, cybermethrin, alpha cybermethrin, phenothrin, diphenothrin, menthol, Japanese cypress oil, Japanese cedar oil, Hiba oil, dithiocarbamoryl sulfide compounds, cynnamic aldehide, and linalool oil.
  • the thermoplastic resin layer 10 B is made of LLDPE (linear low density polyethylene), but the present invention is not limited to this case, and a layer comprising a polyolefin-based resin such as PP and PE, or PS may be used for this purpose.
  • a polyolefin-based resin such as PP and PE, or PS
  • PS polyolefin-based resin
  • LDPE linear low density polyethylene
  • CPP or the like can be enlisted as PP.
  • a material which can easily be adhered thermally or can easily be separated may be added in the polyolefin-based rein or PS described above.
  • additives for instance, there can be enlisted such materials as EVA (ethylene vinyl acetate), polyolefin-based resins with such as rubber as SBS (styrene-butadiene-styrene) rubber or EPR (ethylene-propylene rubber) kneaded therein, a mixture of PP (polypropylene) and PE (polyethylene) or the like.
  • EVA ethylene vinyl acetate
  • SBS styrene-butadiene-styrene
  • EPR ethylene-propylene rubber
  • the atmosphere improving layer 10 A in an edge section of the atmosphere improving tape 10 has a semicircular notched from as shown in FIG. 12, but this invention is not limited to this configuration, and various forms of the edge section are allowable including that in which the edge section of the atmosphere improving tape 10 has a linear form, and that in which the notched section 41 is formed in the edge section of the atmosphere improving tape 10 and the notched section 41 has a semicircular form as shown in FIG. 23.
  • the package 1 with an atmosphere improving tape is manufactured by continuously feeding out the atmosphere improving tape 10 and thermally adhering the atmosphere improving tape 10 on the sheet 61 as shown in FIG. 14 to FIG. 20, but the present invention is not limited to this configuration, and for instance, the package 1 with an atmosphere improving tape may be manufactured by thermally adhering a plurality of cut pieces of the atmosphere improving tape 10 each piece having a prespecified length to the sheet 61 and overlaying the sheet 60 thereon from the top side as shown in FIG. 24. Also in this case, in an edge section of the atmosphere improving tape 10 in its extending direction, the atmosphere improving layer 10 A is buried in the side heat-sealed section 23 .
  • the atmosphere improving tape 10 and the package 1 with an atmosphere improving tape are manufactured under the following conditions.
  • the atmosphere improving layer 10 A of the atmosphere improving tape 10 was prepared by extruding a master batch prepared by kneading polystyrene (Idemitsu Styrole ET 63 produced by Idemitsu Petrochemical Co., Ltd.) and an iron-powder oxygen absorbing agent (comprising iron powder with the bulk specific weight of 2.0 and the specific surface area of 0.5 and salt or the like) at the weight ratio of 40:60 to form pellets of the mixture.
  • kneading polystyrene Idemitsu Styrole ET 63 produced by Idemitsu Petrochemical Co., Ltd.
  • an iron-powder oxygen absorbing agent comprising iron powder with the bulk specific weight of 2.0 and the specific surface area of 0.5 and salt or the like
  • LLDPE (Moretech 0238CN produced by Idemitsu Petrochemical Co., Ltd.) was used as a material for the thermoplastic resin layer 10 B.
  • the package 1 with an atmosphere improving tape was manufacture under the same conditions as those employed in Example 14 except that punching with the punching device 40 was not carried out to the atmosphere improving tape 10 .
  • the atmosphere improving layer 10 A is buried in the side heat-sealed section 23 and is not thermally adhered thereto, and the edge section of the atmosphere improving tape 10 is exposed to outside of the package 1 with an atmosphere improving tape.
  • This comparative example is different from Comparative Example 14 in the point that the atmosphere improving tape 10 is not used. Further the sheets each constituting the package are different, and the sheet used in Comparative Example 15 has a three-layered laminated structure comprising an outer layer, an inner layer, and an outer layer.
  • This sheet was molded with a multilayered extrusion device having two units of extruders each with the screw diameter of 30 mm ⁇ . Resin for the top and bottom outer layers was extruded with one of the extruder, and resin for the inner layer was extruded by another extruder. LLDPE (More tech 0238 CN produced by Idemitsu Sekiyu Kagaku K. K.) was used as the resin for the outer layers.
  • the resin for the inner layer was prepared by extruding a master batch prepared by kneading polystyrene (Idemitsu Styrole ET63 produced by Idemitsu Petrochemical Co., Ltd.) and an iron-powder oxygen absorbing agent (comprising iron powder with the bulk specific weight of 2.0 or more and the specific surface area of 0.5 or more and salt or the like) at the weight ratio of 40:60 to form pellets of the mixture.
  • the adhesion strength between the inner layer and outer layers in this sheet was 500 g/15 mm in width.
  • Example 14 leakage of iron powder and PS from the atmosphere improving layer did not occur, and therefore it was determined that the product could be applied to practical use.
  • the edge section of the tape is the same as that of the package, and because of this feature, it was determined that PS leaked from an edge section of the tape and the product could not be used for actual purposes.
  • Comparative Example 15 layers of the sheet constituting the package were separated from each other, and it was determined that the product could not be used for practical purposes.
  • the present invention relates to an atmosphere improving tape for a package, a package with the atmosphere improving tape, a packaging container with the atmosphere improving tape, a zipper, and a packaging container with the zipper, which can be used for packaging foods, medical drugs, clothes, machine parts and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Slide Fasteners (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Bag Frames (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
US10/494,323 2001-11-01 2002-10-30 Atmosphere improving tape for package package with atmosphere improving tape and method of manufacturing the package package container with atmosphere improving tape engaging device an package with engaging device Abandoned US20040251164A1 (en)

Priority Applications (1)

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US11/608,628 US20070122573A1 (en) 2001-11-01 2006-12-08 Atmosphere improving tape for package, package with atmosphere improving tape and method of manufacturing the package, package container with atmosphere improving tape, engaging device , and package with engaging device

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP2001-336865 2001-11-01
JP2001336866A JP3964181B2 (ja) 2001-11-01 2001-11-01 酸素吸収性テープ
JP2001336865A JP3943898B2 (ja) 2001-11-01 2001-11-01 酸素吸収性テープ付包装体、包装容器および該包装体の製造方法
JP2001-336866 2001-11-01
JP2002-015764 2002-01-24
JP2002015764A JP3946529B2 (ja) 2002-01-24 2002-01-24 咬合具、咬合具付包装体、および咬合具の製造方法
JP2002142943A JP3943990B2 (ja) 2002-05-17 2002-05-17 雰囲気改良性テープ付包装体および雰囲気改良性テープ付包装体の製造方法
JP2002-142943 2002-05-17
PCT/JP2002/011288 WO2003037743A1 (fr) 2001-11-01 2002-10-30 Ruban d'emballage ameliorant l'atmosphere, emballage dote d'un ruban ameliorant l'atmosphere et procede de production de l'emballage, contenant d'emballage dote d'un ruban ameliorant l'atmosphere, dispositif de declenchement et emballage dote de ce dispositif d'enclenchement

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US11/608,628 Abandoned US20070122573A1 (en) 2001-11-01 2006-12-08 Atmosphere improving tape for package, package with atmosphere improving tape and method of manufacturing the package, package container with atmosphere improving tape, engaging device , and package with engaging device

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US (2) US20040251164A1 (ko)
EP (2) EP1462383A4 (ko)
KR (2) KR100961028B1 (ko)
CN (1) CN100443382C (ko)
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US20090252912A1 (en) * 2006-06-27 2009-10-08 Tetsuro Yasuike Laminated tape, package, and process for producing laminated tape
US8505236B1 (en) * 2009-11-30 2013-08-13 The United States Of America, As Represented By The Secretary Of Agriculture Apparatus for packaging arthropods infected with entomopathogenic nematodes
JP2019182518A (ja) * 2018-04-13 2019-10-24 五洋紙工株式会社 包装材料およびそれを用いた包装容器
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US20090252912A1 (en) * 2006-06-27 2009-10-08 Tetsuro Yasuike Laminated tape, package, and process for producing laminated tape
US8440293B2 (en) * 2006-06-27 2013-05-14 Idemitsu Unitech Co., Ltd. Laminated tape, package, and process for producing laminated tape
US8505236B1 (en) * 2009-11-30 2013-08-13 The United States Of America, As Represented By The Secretary Of Agriculture Apparatus for packaging arthropods infected with entomopathogenic nematodes
US11370064B2 (en) * 2015-04-08 2022-06-28 Idemitsu Unitech Co., Ltd. Zipper tape, bag with zipper tape, method for manufacturing bag with zipper tape, long member-bonding method capable of favorably bonding long members, device therefor, and zipper tape-bonding device
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DE60235129D1 (de) 2010-03-04
EP1462383A1 (en) 2004-09-29
TW200300112A (en) 2003-05-16
US20070122573A1 (en) 2007-05-31
EP1867579B1 (en) 2010-01-13
KR100961028B1 (ko) 2010-06-01
CN1610636A (zh) 2005-04-27
KR20090026362A (ko) 2009-03-12
TWI273033B (en) 2007-02-11
ATE455051T1 (de) 2010-01-15
EP1462383A4 (en) 2006-04-19
EP1867579A1 (en) 2007-12-19
CN100443382C (zh) 2008-12-17
KR20050042016A (ko) 2005-05-04
WO2003037743A1 (fr) 2003-05-08
KR100893643B1 (ko) 2009-04-17

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