DK162275B - Let oprivelige, steriliserbare emballager - Google Patents
Let oprivelige, steriliserbare emballager Download PDFInfo
- Publication number
- DK162275B DK162275B DK617986A DK617986A DK162275B DK 162275 B DK162275 B DK 162275B DK 617986 A DK617986 A DK 617986A DK 617986 A DK617986 A DK 617986A DK 162275 B DK162275 B DK 162275B
- Authority
- DK
- Denmark
- Prior art keywords
- ethylene
- sealing
- copolymer
- foil
- layer
- Prior art date
Links
- 238000004806 packaging method and process Methods 0.000 title claims description 14
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 229920001577 copolymer Polymers 0.000 claims abstract description 22
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000005977 Ethylene Substances 0.000 claims abstract description 16
- 229920001155 polypropylene Polymers 0.000 claims abstract description 11
- 239000004743 Polypropylene Substances 0.000 claims abstract description 9
- -1 polypropylene Polymers 0.000 claims abstract description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 4
- 239000011888 foil Substances 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920006114 semi-crystalline semi-aromatic polyamide Polymers 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 claims 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N ethyl ethylene Natural products CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 abstract description 6
- 229920001038 ethylene copolymer Polymers 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 6
- 210000002105 tongue Anatomy 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
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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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5855—Peelable seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
- B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
-
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2025—Multi-layered container, e.g. laminated, coated
-
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2066—Means on, or attached to, container flange facilitating opening, e.g. non-bonding region, cut-out
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- Y10T428/1359—Three or more layers [continuous layer]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1379—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1379—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
- Y10T428/1383—Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1452—Polymer derived only from ethylenically unsaturated monomer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2804—Next to metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2813—Heat or solvent activated or sealable
- Y10T428/2817—Heat sealable
- Y10T428/2826—Synthetic resin or polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/3175—Next to addition polymer from unsaturated monomer[s]
- Y10T428/31757—Polymer of monoethylenically unsaturated hydrocarbon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
- Y10T428/31797—Next to addition polymer from unsaturated monomers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/3188—Next to cellulosic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
- Nonmetallic Welding Materials (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Physical Vapour Deposition (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- External Artificial Organs (AREA)
Description
1 DK 162275 B
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Den foreliggende opfindelse angår let åbnelige (peelbare) og steriliserbare emballager af to ved forsegling i randområderne med hinanden forbundne flerlagsfolier, en såkaldt over- og underfolie.
5 Steriliserbare emballager af flerlagsfolier er kendte. Til fremstilling af sådanne beholdere anvendes imidlertid flerlagsfolier, der i det mindste udviser identiske forseglingslag, fortrinsvis forseglingslag af et copolymerisat af ethylen/l-buten. Da det kun er 10 muligt at åbne sådanne emballager ved anvendelse af stor kraft, er det allerede blevet forsøgt at fremstille emballager, der er steriliserbare og er lettere at åbne (jf. DE fremlæggelsesskrift nr. 2.255.026). Ved disse emballager skal man imidlertid ved åbningen af-15 rive og udrive en del af forseglingslaget fuldstændig fra basislaget i forseglingssømmens område, hvilket stadig kræver anvendelse af betydelig kraft og fortrinsvis kun lykkes ved hjælp af en særligt udformet oprivnings-tunge.
20 Der foreligger derfor et behov for at tilvejebringe steriliserbare indpakningsbeholdere, som både tåler den nødvendige fugtige sterilisation ved 121°C i modtryksautoklaver uden forringelse af tætheden og ved den senere udtagelse af det steriliserede indhold stadig kan åbnes 25 let.
Opfindelsen angår således let oprivelige (peelbare) og steriliserbare emballager af mindst to ved forsegling i randområderne med hinanden forbundne, eventuelt ' gastætte flerlagsfolier, af en såkaldt over- og underfolie, 30 der hver især udviser mindst et forseglingslag, hvilke em ballager er ejendommelige ved, at det ene forseglingslag, som bevirker sammenbindingen, indeholder et copolymerisat af ethylen/l-buten, og det andet forseglingslag indeholder et polypropylen eller et copolymerisat af propylen/ethylen qc eller fortrinsvis i det væsentlige består deraf.
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2 DK 162275 B
De her omhandlede emballager, fortrinsvis indpakningsbeholdere, fremstilles fortrinsvis ved-den kendte
A
dybtrækningsmetode i form af et bæger eller en bakke, hvortil der anvendes den såkaldte underfolie, og bægeret 5 eller bakken lukkes med et dække, der er fremstillet af den såkaldte overfolie.
Den aftrækkelige overfolie har fortrinsvis en op-rivningstunge med vilkårlig form.
Hvis emballagen skal være gastæt, skal både den 10 såkaldte overfolie og underfolien have et gasbarrierelag.
Egnede til fremstilling af gasbarrierelagene er alle kendte materialer med ringe oxygengennemtrængelighed, fortrinsvis mere end 90% forsæbede copolymerisater af ethylen/vinylacetat eller blandinger af sådanne copoly-15 merisater med polyamider eller af polyvinylidenchlorid eller aluminium. Hvis de gastætte emballager skal udvise en tilstrækkelig transparens, anvendes der til fremstilling af gasbarrierelaget fortrinsvis en blanding af et over 90% forsæbet copolymerisat af ethylen/vinylacetat 20 og polyamid i blandingsforholdet 35:65 til 65:35 (vægt procent) .
Basisfolien, hvorpå forseglingslaget anbringes, kan være identisk i overfolien og underfolien. Egnede til fremstilling af basislaget er således alle termo-25 plastiske materialer, der stadig har en tilstrækkelig styr ke ved sterilisationstemperaturen. Fortrinsvis anvendes der til fremstilling af basislaget delvis krystallinske polyamider, især PA-6, PA-6,6, PA-6,12, polyestere, po-lyolefiner, især propylenpolymerisater, celleglas eller 30 aluminium. Celleglas og aluminium anvendes især til over fladen.
Til fremstilling af forseglingslagene af en af de anvendte flerlagsfolier anvendes ethylen/l-buten-copo- lymere, der har et ethylenindhold på 70-95 vægtprocent, 35
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3 DK 162275 B
fortrinsvis 80-85 vægtprocent, en vægtfylde på 0,920 til 0,938 g/cirf*, fortrinsvis 0,932 til 0,936 g/cm^, et smelteindeks på 0,5/10 min. (190°C, 2,16 kp) og et smelteinterval på 115-135°C. Lagtykkelsen ligger i om-5 rådet 25-lOO^um, fortrinsvis 50-80yum.
Til fremstilling af den let oprivelige emballage skal flerlagsfolien, hvis forseglingslag i det væsentlige bestå af det nævnte ethylen/l-buten-copolymer, kombineres med en flerlagsfolie, hvis forseglingslag i 10 det væsentlige består af en ethylen/propylen-copolymer eller et polypropylen.
Der kan anvendes alle kendte propylen/ethylen-co-polymere, der allerede anvendes til fremstilling af forseglingslag, fortrinsvis sådanne med et ethylenindhold 15 på højst 6 vasgtprocent, fortrinsvis 4-6 vægtprocent, en 3 vægtfylde på 0,9-0,905 g/cm og et smelteindeks på 5-6 g/10 minutter (230°C, 2,16 kg). Lagtykkelsen bør ligge i området 25-10O^um, fortrinsvis 80yum.
De kendte polypropylener, der allerede anvendes 20 til fremstilling af forseglingslag, kan anvendes som for seglingsmateriale. De bør have en vægtfylde på 0,905- 3 -0,910 g/cm , et smelteindeks på 1,5-8,0 g/10 minutter (230°C, 2,16 kp), fortrinsvis 2-4 g/10 minutter, og et smelteinterval på 160-165°C. Tykkelsen af forseglings-25 laget bør ligge i området 40-2000^,um, fortrinsvis 100- -lOOO^um.
De her omhandlede emballager er særlig foretrukket opbygget af en kombination af følgende flerlagsfolier: 1. PA-6 som basislag, 30 forsæbet ethylen/vinylacetat-copolymerisat som gas- barrierelag eller en blanding af dette copolymeri- sat med PA-6,12, eventuelt et PA-6-mellemlag og en ethylen/l-buten- -copolymer (E/B) som forseglingslag, og 35
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2. PA-6 som basislag, forsæbet ethylen/vinylacetat-copolymerisat (EVOH) eller en blanding af dette copolymerisat med PA-6,12, 5 eventuelt et PA-6-mellemlag og et polypropylen (PP) eller et ethylen/propylen--copolymerisat (E/P) som forseglingslag eller en kombination af 1. PA-6 som basislag og et ethylen/propylen-copoly- 10 merisat eller polypropylen som forseglingslag og 2. PA-6 som basislag og et ethylen/l-buten-copoly-merisat som forseglingslag.
Eventuelt kan der mellem de enkelte lag af de an-15 vendte flerlagsfolier også anbringes kendte, gængse ved- hæftningsformidlende lag.
De her omhandlede emballager kan formes på kendte dybtrækningsautomater, fyldes og lukkes. Derved overtages underfolien, der afvikles fra en rulle, af en klemmekæde 20 og transporteres med denne gennem de enkelte stationer af emballagemaskinen. Der foretages først en termo-dybtræk-ning af den flade foliebane ved negativ eller positiv formning til dannelse af bægre eller bakker. Alt efter størrelse og form kan flere bakker dybtrækkes ved siden af 25 hinanden og efter hinanden i en arbejdsgang. Fyldningen af de formede bægre eller bakker foretages ved hjælp af egnede fyldningsautomater.
Derefter føres overfolien, der ligeledes afvikles fra en rulle, over de fyldte bakker, og efter evakuerinq 30 „ og eventuel påfyldning af beskyttelsesgas i den fyldte beholder forbindes overfolien med underfolien ved hjælp af et permanent opvarmet forseglingsværktøj. Emballagebeholderne, der stadig hænger sammen til et bånd, skilles derefter ved hjælp af egnede separationsanordninger, fortrinsvis ved 35 5
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stansning. Efter indpakningen steriliseres de fyldte pakninger, således at pakningens indhold bliver holdbart, i modtryksautoklaver ved maksimalt 121°C i 2 timer.
Trods den tilstrækkelige styrke af forseglings-5 sømmen, som de her omhandlede pakninger udviser selv efter sterilisering, kan pakningerne åbnes problemløst uden anvendelse af større kraft, fortrinsvis ved hjælp af en gængs oprivningstunge, som svarer til pakningens dimensioner.
Fig. 1 og fig. 2 på tegningen viser sådanne mulige 10 oprivningstunger. I disse figurer er der vist forseglingssømmen (1), der forbinder overfolien (3) med underfolien (4), og opr ivnings tungen (2), ved hjælp af hvilken dækket (3) = overfolie (3) let kan fjernes fra bakken eller bægeret (4) = underfolie (4).
15 I fig. 3 er der vist et tværsnit af denne indpak ningsbeholder ifølge opfindelsen, idet opbygningen af underfolien (4} og overfolien (3) fremgår af de i eksempel 1 anførte oplysninger. I området af forseglingssømmen (1) er underfolien (4). forbundet overalt med overfolien (3), 20 idet overfolien (3) ved hjælp af oprivningstungen (2) let kan skilles fra underfolien (4).
Eksempel 1 25 Ud fra en underfolie med følgende opbygning fra basislaget og indtil forseglingslaget: PA-6 35yum (A)/EVOH-PA-6,12-blanding 20^um (B)/-PA-6 35^um (C)/PP 600yUm (D) og en overfolie med følgende opbygning fra basislaget 30 og indtil forseglingslaget: PA-6 35^um (A')/EVOH-PA-6,12-blanding 20^um (B1). /PA-6 35^,um (C 1)/E/B-copolymer 75^um (D1) formes på en dybtrækningsmaskine indpakningsbeholdere, der fyldes med en færdig ret, evakueres delvis og forseg-35 les. Sømstyrken målt ifølge DIN 53.455 af de færdige pakninger bestemmes til ca. 23 N/15 mm.
DK 162275 B
O
6
Derefter steriliseres denne beholder i en autoklav ved 121°C i 30 minutter og ved et modtryk på 2 bar.
Efter denne behandling er sømstyrken ca. 13 N/15 mm. Beholderne er tætte og sikrer dermed en optimal beskyttelse 5 af indholdet trods den gode af trækkelighed af daskfolien.
Eksempel 2
Af en underfolie med opbygningen PA-6 50yUm/E/B--copolymer 75yUm formes der på en dybtrækningsmaskine 10 emballagebeholderé, de fyldes med infusionsopløsning i PVC-poser, dækkes med en overfolie med opbygningen PA-6 3 Oyum/E/P-copolymer 75^um, evakueres fuldstændig og forsegles .
Sømstyrken af forseglingssømmene er ca. 6 N/15 mm, 15 og efter sterilisation ved 115°C i 30 minutter ved et modtryk på 1,5 bar er sømstyrken faldet til ca. 4 N/15 mm.
Denne værdi er imidlertid tilstrækkelig til at sikre en fuldstændig tæt pakning, da der her er tale om en evakueret pakning. På.grund af den lette oprivelighed sikres 20 en problemløs udtagelse af pakningens indhold, f.eks. i et operationsrum, 25 30 35
Claims (5)
1. Let oprivelige (peelbare) og steriliserbare pakninger af mindst to ved forsegling i randområderne 5 med hinanden forbundne, eventuelt gastætte flerlagsfo-lier, der hver især har mindst et forseglingslag, kendetegnet ved, at det ene forseglingslag indeholder et copolymerisat af ethylen/l-buten og det andet indeholder et polypropylen eller et copolymerisat 10 af propylen/ethylen.
2. Emballage ifølge krav 1, kendetegnet ved, at folierne er gastætte.
3. Emballager ifølge krav 1, kendetegnet ved, at de er fremstillet ved dybtrækningsmetoden.
4. Emballage ifølge mindst et af kravene 1-3, kendetegnet ved, at mindst en folie har en op-rivningstunge.
5. Emballage ifølge mindst et af kravene 1-4, kendetegnet ved, at mindst et basislag af fler-20 lagsfolierne består af delvis krystallinsk polyamid, poly ester, polyolefin, celleglas eller aluminium. 25 30 35
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853545768 DE3545768A1 (de) | 1985-12-21 | 1985-12-21 | Leicht aufreissbare, sterilisierbare packungen |
DE3545768 | 1985-12-21 |
Publications (4)
Publication Number | Publication Date |
---|---|
DK617986D0 DK617986D0 (da) | 1986-12-19 |
DK617986A DK617986A (da) | 1987-06-22 |
DK162275B true DK162275B (da) | 1991-10-07 |
DK162275C DK162275C (da) | 1992-03-02 |
Family
ID=6289382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK617986A DK162275C (da) | 1985-12-21 | 1986-12-19 | Let oprivelige, steriliserbare emballager |
Country Status (12)
Country | Link |
---|---|
US (1) | US4766018A (da) |
EP (1) | EP0226921B1 (da) |
AT (1) | ATE57358T1 (da) |
CA (1) | CA1274478A (da) |
DE (2) | DE3545768A1 (da) |
DK (1) | DK162275C (da) |
ES (1) | ES2018651B3 (da) |
FI (1) | FI86832C (da) |
GR (1) | GR3000934T3 (da) |
IE (1) | IE58785B1 (da) |
NO (1) | NO864876L (da) |
PT (1) | PT83910B (da) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5024044A (en) * | 1987-06-12 | 1991-06-18 | W. R. Grace & Co.-Conn. | Process for producing an easily opened package |
US4859514A (en) * | 1987-06-12 | 1989-08-22 | W. R. Grace & Co. | Laminate for an easily opened package |
US4886690A (en) * | 1987-12-21 | 1989-12-12 | W. R. Grace & Co. | Peelable barrier film for vacuum skin packages and the like |
DE3901835A1 (de) * | 1988-01-28 | 1989-08-10 | Claus M Hiltner | Verpackung, insbesondere sterile verpackung fuer steril zu haltende gegenstaende |
EP0377747B1 (en) * | 1988-05-19 | 1997-01-29 | Toyo Seikan Kaisha, Ltd. | Easily openable sealed package container |
US4867336A (en) * | 1988-09-12 | 1989-09-19 | Shell Oil Company | Continuous lid seam |
DE8915406U1 (de) * | 1989-01-19 | 1990-05-31 | Schmalbach-Lubeca AG, 3300 Braunschweig | Leicht zu öffnende Verpackung |
CA1320918C (en) * | 1989-02-13 | 1993-08-03 | Showa Denko Kabushiki Kaisha | Container |
US5023121A (en) * | 1990-04-12 | 1991-06-11 | W. R. Grace & Co.-Conn. | Coextruded film with peelable sealant |
FR2669607B1 (fr) * | 1990-11-26 | 1995-05-12 | Torterotot | Couvercle souple de securite refermable. |
DE9214025U1 (de) * | 1992-10-17 | 1992-12-24 | VAW Aluminium AG, 5300 Bonn und 1000 Berlin | Lebensmittelbehälter für den Bereich Luftfahrt-Catering |
DE9219105U1 (de) * | 1992-10-31 | 1998-03-05 | Klocke Verpackungs-Service GmbH, 76356 Weingarten | Behälter zur Aufnahme von aromatischen Substanzen |
DE4419709A1 (de) * | 1994-06-06 | 1995-12-07 | Wolff Walsrode Ag | Gasundurchlässige, hochtransparente und durchstichfeste Verbundfolie |
NZ280404A (en) * | 1994-11-22 | 1998-01-26 | Grace W R & Co | Composite film for vacuum skin packaging having a permeable film with semi-adherent layer using the film, film details |
EP0755778A1 (de) | 1995-07-28 | 1997-01-29 | Wolff Walsrode Ag | Sterilisationsfeste Sperrschichtfolie auf Basis von Polyamiden und Polyolefinen |
AT403266B (de) * | 1995-09-28 | 1997-12-29 | Danubia Petrochem Polymere | Mehrschichtige verpackungsfolie auf polypropylenbasis, sowie deren verwendung |
DE19538910A1 (de) * | 1995-10-19 | 1997-04-24 | Danubia Petrochem Deutschland | Mehrschichtige Verpackungsfolie auf Polypropylenbasis, sowie deren Verwendung |
DE19542716A1 (de) * | 1995-11-16 | 1997-05-22 | Braun Melsungen Ag | Polymer-Composit-Schlauchfolie |
DE19548179A1 (de) * | 1995-12-22 | 1997-07-03 | Helio Folien Gmbh | Verpackungsbeutel |
US5979653A (en) * | 1997-12-24 | 1999-11-09 | Cryovac, Inc. | Peel mechanism for peelable barrier film for vacuum skin packages and the like |
US6044622A (en) * | 1999-01-11 | 2000-04-04 | Cryovac, Inc. | Method and apparatus for producing a package having a peelable film with a tab to facilitate peeling |
US6979494B2 (en) * | 2002-08-27 | 2005-12-27 | Cryovac, Inc. | Dual-ovenable, heat-sealable packaging film |
US7919161B2 (en) * | 2002-12-18 | 2011-04-05 | Cryovac, Inc. | Dual-ovenable, heat-sealable packaging tray |
US20040121054A1 (en) * | 2002-12-20 | 2004-06-24 | Berrier Arthur L. | Method of preparing food |
US7314669B2 (en) * | 2003-02-05 | 2008-01-01 | Pechiney Emballage Flexible Europe | Easy peel film structures |
US7404994B2 (en) * | 2003-03-12 | 2008-07-29 | Reynolds Packaging Llc | Lidstock material having improved burst strength |
WO2005090199A2 (fr) * | 2004-03-17 | 2005-09-29 | Carrefour Sa | Emballage pour aliments, conserve obtenue et procede de fabrication de recipients sterilisables et separables, pour un tel emballage |
FR2867758B1 (fr) * | 2004-03-17 | 2007-05-04 | Carrefour Sa | Emballage longue conservation et procede pour obtenir un tel emballage |
BRPI0801053A2 (pt) * | 2008-02-11 | 2009-11-17 | Pascoal Sante Caruso | processo de produção e conservação de alimentos com validade de até quatro anos |
US9988198B2 (en) | 2010-08-23 | 2018-06-05 | Cryovac, Inc. | Ovenable heat-sealed package |
NL2019329B1 (en) * | 2017-07-24 | 2019-02-18 | Quinlyte Holding B V | Multilayer laminate film assembly and standing pouch |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH475883A (de) * | 1967-07-18 | 1969-07-31 | Tedeco Verpackung Gmbh | Packung, insbesondere für Nahrungsmittel, und Verfahren zu ihrer Herstellung |
GB1350290A (en) * | 1971-05-18 | 1974-04-18 | Ucb Sa | Wrapping film capable of forming a peelable seal |
DE2255026C3 (de) * | 1972-11-10 | 1981-07-16 | Feldmühle AG, 4000 Düsseldorf | Packung |
US3926311A (en) * | 1974-08-22 | 1975-12-16 | Vonco Products Inc | Peel-seal containers |
US4125662A (en) * | 1977-10-03 | 1978-11-14 | Mobil Oil Corporation | Packaging film with improved heat sealability |
JPS58385B2 (ja) * | 1977-11-29 | 1983-01-06 | 日本クラウンコルク株式会社 | 剥離可能な接着構造物及びその製造方法 |
FR2442261A1 (fr) * | 1978-11-24 | 1980-06-20 | Raffinage Cie Francaise | Complexe bicouche, notamment pour la fermeture d'emballages en matiere plastique |
CH650210A5 (de) * | 1981-03-17 | 1985-07-15 | Aluminiumwerke Ag Rorschach | Konservendose mit dosenkoerper aus weissblech. |
US4521467A (en) * | 1983-12-12 | 1985-06-04 | Frito-Lay, Inc. | Ultrasonically-sealable peelable seal |
DE3444866A1 (de) * | 1984-12-08 | 1986-06-12 | Hoechst Ag, 6230 Frankfurt | Siegelfaehige, opake polyolefinische mehrschichtfolie |
-
1985
- 1985-12-21 DE DE19853545768 patent/DE3545768A1/de not_active Withdrawn
-
1986
- 1986-12-04 NO NO864876A patent/NO864876L/no unknown
- 1986-12-08 ES ES86117007T patent/ES2018651B3/es not_active Expired - Lifetime
- 1986-12-08 DE DE8686117007T patent/DE3674892D1/de not_active Expired - Lifetime
- 1986-12-08 EP EP86117007A patent/EP0226921B1/de not_active Expired - Lifetime
- 1986-12-08 AT AT86117007T patent/ATE57358T1/de not_active IP Right Cessation
- 1986-12-11 PT PT83910A patent/PT83910B/pt not_active IP Right Cessation
- 1986-12-16 US US06/942,143 patent/US4766018A/en not_active Expired - Fee Related
- 1986-12-18 FI FI865192A patent/FI86832C/fi not_active IP Right Cessation
- 1986-12-19 DK DK617986A patent/DK162275C/da active
- 1986-12-19 IE IE334786A patent/IE58785B1/en not_active IP Right Cessation
- 1986-12-19 CA CA000525834A patent/CA1274478A/en not_active Expired - Lifetime
-
1990
- 1990-10-12 GR GR90400767T patent/GR3000934T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
ATE57358T1 (de) | 1990-10-15 |
IE58785B1 (en) | 1993-11-17 |
EP0226921A2 (de) | 1987-07-01 |
FI86832B (fi) | 1992-07-15 |
US4766018A (en) | 1988-08-23 |
NO864876L (no) | 1987-06-22 |
PT83910A (en) | 1987-01-01 |
NO864876D0 (no) | 1986-12-04 |
CA1274478A (en) | 1990-09-25 |
EP0226921A3 (en) | 1989-04-19 |
DK162275C (da) | 1992-03-02 |
DK617986D0 (da) | 1986-12-19 |
IE863347L (en) | 1987-06-21 |
DK617986A (da) | 1987-06-22 |
EP0226921B1 (de) | 1990-10-10 |
FI86832C (fi) | 1992-10-26 |
ES2018651B3 (es) | 1991-05-01 |
GR3000934T3 (en) | 1991-12-10 |
DE3674892D1 (de) | 1990-11-15 |
FI865192A0 (fi) | 1986-12-18 |
PT83910B (pt) | 1989-06-30 |
FI865192A (fi) | 1987-06-22 |
DE3545768A1 (de) | 1987-06-25 |
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