CA2245678C - Film multicouche permeable a l'oxygene et ayant un module eleve, procede d'emballage utilisant ce film, et produit emballe le comprenant - Google Patents
Film multicouche permeable a l'oxygene et ayant un module eleve, procede d'emballage utilisant ce film, et produit emballe le comprenant Download PDFInfo
- Publication number
- CA2245678C CA2245678C CA 2245678 CA2245678A CA2245678C CA 2245678 C CA2245678 C CA 2245678C CA 2245678 CA2245678 CA 2245678 CA 2245678 A CA2245678 A CA 2245678A CA 2245678 C CA2245678 C CA 2245678C
- Authority
- CA
- Canada
- Prior art keywords
- multilayer film
- layer
- inner layer
- film
- alpha
- 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 - Fee Related
Links
- 238000012858 packaging process Methods 0.000 title claims description 13
- 239000004711 α-olefin Substances 0.000 claims abstract description 75
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000005977 Ethylene Substances 0.000 claims abstract description 72
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 66
- 238000004806 packaging method and process Methods 0.000 claims abstract description 23
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims description 59
- 229920001577 copolymer Polymers 0.000 claims description 44
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 38
- 239000000203 mixture Substances 0.000 claims description 37
- 235000011299 Brassica oleracea var botrytis Nutrition 0.000 claims description 24
- 240000003259 Brassica oleracea var. botrytis Species 0.000 claims description 24
- 240000007124 Brassica oleracea Species 0.000 claims description 20
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 claims description 20
- 240000006740 Cichorium endivia Species 0.000 claims description 20
- 244000298479 Cichorium intybus Species 0.000 claims description 20
- 235000003733 chicria Nutrition 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- 235000017647 Brassica oleracea var italica Nutrition 0.000 claims description 14
- 235000003228 Lactuca sativa Nutrition 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 13
- 229920000098 polyolefin Polymers 0.000 claims description 12
- 235000002732 Allium cepa var. cepa Nutrition 0.000 claims description 10
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 claims description 10
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 claims description 10
- 235000012905 Brassica oleracea var viridis Nutrition 0.000 claims description 10
- 235000021538 Chard Nutrition 0.000 claims description 10
- 235000007542 Cichorium intybus Nutrition 0.000 claims description 10
- 235000002767 Daucus carota Nutrition 0.000 claims description 10
- 244000000626 Daucus carota Species 0.000 claims description 10
- 235000006140 Raphanus sativus var sativus Nutrition 0.000 claims description 10
- 229920001400 block copolymer Polymers 0.000 claims description 10
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 10
- 229920001519 homopolymer Polymers 0.000 claims description 9
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 8
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 8
- 235000013311 vegetables Nutrition 0.000 claims description 7
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 6
- 235000004221 Brassica oleracea var gemmifera Nutrition 0.000 claims description 6
- 244000308368 Brassica oleracea var. gemmifera Species 0.000 claims description 6
- 235000002566 Capsicum Nutrition 0.000 claims description 6
- 244000241257 Cucumis melo Species 0.000 claims description 6
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 claims description 6
- 240000004244 Cucurbita moschata Species 0.000 claims description 6
- 235000009854 Cucurbita moschata Nutrition 0.000 claims description 6
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 6
- 239000006002 Pepper Substances 0.000 claims description 6
- 235000016761 Piper aduncum Nutrition 0.000 claims description 6
- 240000003889 Piper guineense Species 0.000 claims description 6
- 235000017804 Piper guineense Nutrition 0.000 claims description 6
- 235000008184 Piper nigrum Nutrition 0.000 claims description 6
- 240000004713 Pisum sativum Species 0.000 claims description 6
- 235000010582 Pisum sativum Nutrition 0.000 claims description 6
- 235000009337 Spinacia oleracea Nutrition 0.000 claims description 6
- 244000300264 Spinacia oleracea Species 0.000 claims description 6
- 240000008042 Zea mays Species 0.000 claims description 6
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 6
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 6
- 235000005822 corn Nutrition 0.000 claims description 6
- 244000013123 dwarf bean Species 0.000 claims description 6
- 235000021331 green beans Nutrition 0.000 claims description 6
- 235000021384 green leafy vegetables Nutrition 0.000 claims description 6
- 235000020354 squash Nutrition 0.000 claims description 6
- 235000021028 berry Nutrition 0.000 claims description 5
- 229920001038 ethylene copolymer Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 5
- 229920001384 propylene homopolymer Polymers 0.000 claims description 5
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 4
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Polymers OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 244000291564 Allium cepa Species 0.000 claims 3
- 240000008415 Lactuca sativa Species 0.000 claims 3
- 244000088415 Raphanus sativus Species 0.000 claims 3
- 239000010410 layer Substances 0.000 description 236
- 239000000047 product Substances 0.000 description 51
- 238000000034 method Methods 0.000 description 28
- 238000006116 polymerization reaction Methods 0.000 description 19
- 238000009826 distribution Methods 0.000 description 18
- 238000002844 melting Methods 0.000 description 18
- 230000008018 melting Effects 0.000 description 18
- 239000000463 material Substances 0.000 description 17
- WRNGPIFYDWVAPZ-UHFFFAOYSA-N 2-(4-chloro-2-methylphenoxy)ethanol Chemical compound CC1=CC(Cl)=CC=C1OCCO WRNGPIFYDWVAPZ-UHFFFAOYSA-N 0.000 description 16
- 239000012792 core layer Substances 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 13
- 241000208822 Lactuca Species 0.000 description 11
- 239000003054 catalyst Substances 0.000 description 11
- -1 polyethylene Polymers 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 9
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000007334 copolymerization reaction Methods 0.000 description 8
- 241000234282 Allium Species 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 7
- 241000220259 Raphanus Species 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 7
- 239000000806 elastomer Substances 0.000 description 7
- 239000000178 monomer Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000565 sealant Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010828 elution Methods 0.000 description 4
- 238000005194 fractionation Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000012685 gas phase polymerization Methods 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 244000301850 Cupressus sempervirens Species 0.000 description 3
- 101000713310 Homo sapiens Sodium bicarbonate cotransporter 3 Proteins 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 102100036911 Sodium bicarbonate cotransporter 3 Human genes 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000001627 detrimental effect Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004737 colorimetric analysis Methods 0.000 description 2
- 235000008504 concentrate Nutrition 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 239000002638 heterogeneous catalyst Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012968 metallocene catalyst Substances 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000002954 polymerization reaction product Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 238000002076 thermal analysis method Methods 0.000 description 2
- 229920001866 very low density polyethylene Polymers 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- APOYTRAZFJURPB-UHFFFAOYSA-N 2-methoxy-n-(2-methoxyethyl)-n-(trifluoro-$l^{4}-sulfanyl)ethanamine Chemical compound COCCN(S(F)(F)F)CCOC APOYTRAZFJURPB-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000366676 Justicia pectoralis Species 0.000 description 1
- 241001274658 Modulus modulus Species 0.000 description 1
- 101100447665 Mus musculus Gas2 gene Proteins 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- QYMGIIIPAFAFRX-UHFFFAOYSA-N butyl prop-2-enoate;ethene Chemical compound C=C.CCCCOC(=O)C=C QYMGIIIPAFAFRX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000004980 dosimetry Methods 0.000 description 1
- 229920001198 elastomeric copolymer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- XSMJZKTTXZAXHD-UHFFFAOYSA-N ethene;2-methylprop-2-enoic acid Chemical compound C=C.CC(=C)C(O)=O XSMJZKTTXZAXHD-UHFFFAOYSA-N 0.000 description 1
- HGVPOWOAHALJHA-UHFFFAOYSA-N ethene;methyl prop-2-enoate Chemical compound C=C.COC(=O)C=C HGVPOWOAHALJHA-UHFFFAOYSA-N 0.000 description 1
- 229920006245 ethylene-butyl acrylate Polymers 0.000 description 1
- 229920006225 ethylene-methyl acrylate Polymers 0.000 description 1
- 239000005043 ethylene-methyl acrylate Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010096 film blowing Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003701 inert diluent Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005638 polyethylene monopolymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
Un film ou pellicule multicouche possède une première couche externe, une couche interne et une seconde couche externe. La première couche externe comprend un copolymère homogène éthylène/alpha-oléfine. La couche interne comprend un élastomère thermoplastique. La seconde couche externe comprend un second copolymère éthylène/alpha-oléfine. La couche interne est placée entre la première couche externe et la seconde couche externe et elle est différente d'un point de vue chimique de la première couche externe et de la seconde couche externe. Le film multicouche possède un taux de transmission d'oxygène compris entre 500 et 50 000 cc/m<2> environ par 24 heures dans des conditions de température et de pression standard, et un module d'au moins 60 000 psi. Le film multicouche est particulièrement utile pour l'emballage de produits sensibles à l'oxygène, tels que les légumes. Le module élevé du film améliore son comportement au cours des opérations de formage-remplissage-fermeture hermétique.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59779096A | 1996-02-07 | 1996-02-07 | |
| US597,790 | 1996-02-07 | ||
| PCT/US1997/000694 WO1997028964A1 (fr) | 1996-02-07 | 1997-01-22 | Film multicouche permeable a l'oxygene et ayant un module eleve, procede d'emballage utilisant ce film, et produit emballe le comprenant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2245678A1 CA2245678A1 (fr) | 1997-08-14 |
| CA2245678C true CA2245678C (fr) | 2006-05-02 |
Family
ID=29422846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2245678 Expired - Fee Related CA2245678C (fr) | 1996-02-07 | 1997-01-22 | Film multicouche permeable a l'oxygene et ayant un module eleve, procede d'emballage utilisant ce film, et produit emballe le comprenant |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2245678C (fr) |
-
1997
- 1997-01-22 CA CA 2245678 patent/CA2245678C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2245678A1 (fr) | 1997-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140122 |