CH497253A - Impregnation and sterilisation of bottle - corks - Google Patents
Impregnation and sterilisation of bottle - corksInfo
- Publication number
- CH497253A CH497253A CH262568A CH262568A CH497253A CH 497253 A CH497253 A CH 497253A CH 262568 A CH262568 A CH 262568A CH 262568 A CH262568 A CH 262568A CH 497253 A CH497253 A CH 497253A
- Authority
- CH
- Switzerland
- Prior art keywords
- corks
- alcohol
- cork
- bottle
- solution
- Prior art date
Links
- 238000005470 impregnation Methods 0.000 title description 2
- 238000004659 sterilization and disinfection Methods 0.000 title description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001993 wax Substances 0.000 claims abstract description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004952 Polyamide Substances 0.000 claims abstract description 10
- 229920002647 polyamide Polymers 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 3
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 3
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 3
- 239000012188 paraffin wax Substances 0.000 claims abstract description 3
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 239000007799 cork Substances 0.000 abstract description 21
- 238000001035 drying Methods 0.000 abstract description 8
- 239000004150 EU approved colour Substances 0.000 abstract 1
- 229940006093 opthalmologic coloring agent diagnostic Drugs 0.000 abstract 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 description 7
- 238000007598 dipping method Methods 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 206010061217 Infestation Diseases 0.000 description 1
- 229930183415 Suberin Natural products 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229920013754 low-melting plastic Polymers 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K7/00—Chemical or physical treatment of cork
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0278—Processes; Apparatus involving an additional treatment during or after impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/04—Impregnating in open tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
- B27K3/153—Without in-situ polymerisation, condensation, or cross-linking reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
- B27K3/36—Aliphatic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
- B27K3/50—Mixtures of different organic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/003—Treating of wood not provided for in groups B27K1/00, B27K3/00 by using electromagnetic radiation or mechanical waves
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/007—Cork
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
- A61L2/202—Ozone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
A bottle cork is immersed in a soln. contg. alcohol, water, a polyamide and an alcohol-soluble wax, followed by drying in the airstream of a rotating drying drum. The soln. may contain ethanol and/or isopropanol. Ethyl cellulose may also be added. The alcohol-soluble wax may be paraffin. Optional components are alcohol-soluble silicones and or colouring agents. The so treated cork may be post-sterilised by UV-irradiation or ozone. The treatment does not embrittle the cork. The contents of a bottle (e.g. wine) are unaffected by the cork.
Description
Verfahren zum Imprägnieren und Sterilisieren von Flaschenkorken
Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Imprägnieren und Sterilisieren von Flaschenkorken.
Ehedem wurden zugeschnittene Flaschenkorken vom Hersteller ohne eine weitere Behandlung an den Verbraucher geliefert. Vor der Verwendung wurden die Korken gegebenenfalls steril- und weichgemacht, indem man sie etwa 24 Stunden in ein- bis zweiprozentige schwefelige Säure legte und dann die Säure abzentrifugierte.
Die Behandlung mit schwefeliger Säure schädigt den Kork, vor allem, wenn sie längere Zeit einwirkt. Der Hauptbestandteil des Korken, das Suberin und Lignin, werden zerstört, der Korken wird unelastisch, flüssigkeitsdurchlässig und bröckelt leicht ab. Häufig entstehen nach dem Verkorken durch die gebildete Lignin Sulfonsäure starke Weintrübungen.
Seit einigen Jahren werden die Flaschenkorken vom Hersteller mit einem gleitfähigen Ueberzug aus hochschmelzenden Wachsen durch Auftrommeln versehen, durch Begasen mit Schwefeldioxid sterilisiert und in zugeschweissten Polyäthylenbeuteln versandt. Durch den Wachsfilm sind die Korken so gleitfähig, dass die ohne vorheriges Einweichen auf Flaschenfüllautomaten kalt oder auch heiss verarbeitet werden können. Nachteilig ist, dass beim Auftrommeln des Wachses sich nur ein Film aus einzelnen Wachsschüppchen auf den äusseren Flächen der Korken bildet. Das im Inneren der Hohlräume befindliche Korkmehl wird nicht vom Wachs fixiert. Es kann während oder nach dem Verschliessen in den Flascheninhalt gelangen und zur Bildung von Korkwolken führen.
Man hat auch versucht, Korken durch Tauchen in wässerige Wachsemulsionen mit einem zusammenhängenden Wachsfilm zu überziehen, der auch die inneren Hohlräume auskleidet. Dies ist jedoch nur möglich, wenn man die relativ grosse Oberflächenspannung solcher Emulsionen durch Zusatz von Netzmitteln beseitigt. Diese Netzmittel sowie die in der Wachsemulsion befindlichen Emulgatoren sind für den Flascheninhalt nachteilig. Ausserdem ist der Trocknungsprozess nach dem Tauchen langwierig und kostspielig. An den Berührungsstellen der Korken bilden sich leicht Emulsionstropfen, die nach dem Trocknen dickere Wachspunkte hinterlassen.
Es ist bereits bekannt, Korken in geschmolzenes Paraffin oder Paraffin-Harzgemische zu tauchen. Abgesehen von der komplizierten Handhabung des Verfahrens sind solche Ueberzüge nur schwer in gleichmässiger Dicke aufzubringen. Die Haftung der Filme ist nicht ausreichend, und kleinere Hohlräume werden nicht erfasst.
Ferner hat man vorgeschlagen, Korken zusammen mit niedrig schmelzendem Kunststoffpuiver längere Zeit zu trommeln, bis auch die Hohlräume ausgefüllt sind, und dann das Pulver durch Erhitzen der Korken auf eine Temperatur von 100 bis 120 C zusammenzuschmelzen. Wie jedoch bekannt, wird die Elastizität von Kork bei diesen Temperaturen beeinträchtigt. Dies tritt vor allem dann cin, wenn man längere Zeit erhitzt, um auch das Kunststoffpulver in den tieferen Hohlräumen im Korkinneren aufzuschmclzen. Ausserdem besitzt ein Kork, dessen Hohlräume mit Kunststoff ausgefüllt sind, nicht mehr die gewünschte gleichmCissige Elastizität.
Weiterhin wurde vorgeschlagen, Korken in eine Lösung aus Alkohol-Polyamid zu tauchen oder diese Lösung auf Korken aufzuspritzen oder aufzustreichen.
Nach dem Verdunsten des Lösungsmittels entsteht ein dünner Polyamidfilm. Es hat sich jedoch gezeigt, dass Korken, die auf diese Weise behandelt wurden, in fast allen Fällen, mit einem Korkenzieher nicht mehr gezogen werden konnten. Der Polyamidfilm verklebte die Korken im Flaschenhals, und ein Entkorken war nur noch durch Herausbröckeln der Korken möglich.
Ein anderes Verfahren schlägt vor, nur die Oberund Unterseite sowie ein kurzes Stück der angrenzenden zylindrischen Fläche mit einem Polyamidfilm zu über ziehen. Hierdurch wird zwar die Gefahr des Verklebens vermindert, für eine grosstechnische Durchführung ist dieses Verfahren jedoch nicht geeignet. Ausserdem sind der grösste Teil der zylindrischen Fläche sowie die Hohlräume der Korken ungeschützt.
Der Erfindung liegt die Aufgabe zugrunde, Flaschenkorken mit einem gleichmässig dünnen, gleitfähigen, fest haftenden und schützenden Film zu versehen, der physiologisch unbedenklich ist. Ferner soll er vor dem Befall der Korkmotte schützen und eine Schimmelbildung verhindern. Er soll für Kalt- und Heissfüllung gleichermassen geeignet sein und weder Geschmack noch Geruch des Flascheninhaltes beeinträchtigen. Ferner soll er ein müheloses Ver- und Entkorken ermöglichen.
Es wurde nun ein Verfahren gefunden, nach dem Korken so behandelt werden können, dass sie den genannten Anforderungen entsprechen. Ferner wurde festgestellt, dass diese Korken auch bei Heissfüllung, insbesondere beim Überflutungsverfahren , nach dem Verkorken nicht mehr durch das beim Abkühlen entstehende Vakuum in den Flaschenhals hineingezogen werden.
Erfindungsgemäss wird dies dadurch erreicht, dass man die Korken in eine Lösung, enthaltend Alkohol, vorzugsweise Athylalkohol oder ein Gemisch davon mit Isopropylalkohol, Wasser, Polyamid und alkohollösliches Wachs, insbesondere Hydrierungsprodukte natürlicher Fette mit Säurezahl 0-10, Verseifungszahl 1-20, Tropfpunkt 55-75 und Dichte 0,95-0,98, taucht, dann in einer rotierenden Siebtrommel, vorzugsweise zunächst abschleudert und anschliessend, zweckmässig bei geringer Drehzahl der Siebtrommel, im Luftstrom trocknet.
Beispiel
Es wird eine Tauchlösung hergestellt, die aus 3 Teilen Polyamid und 3 Teilen aus dem Hydrierungsprodukt natürlicher Fette mit Säurezahl 0-2, Verseifungszahl 1-15, Tropfpunkt 5661 und Dichte 0,95-0,98, 84 Teilen Athylalkohol und 10 Teilen Wasser besteht.
Die in eine Siebtrommel eingefüllten Korken werden mit der Trommel in diese Lösung getaucht. Durch die geringe Oberflächenspannung dringt die Lösung in kürzester Zeit in die Poren und Hohlräume der Korken ein.
Hierauf wird die Trommel aus der Lösung hochgeschwenkt und in Rotation versetzt. Dabei wird der überschüssige Teil der Lösung abgeschleudert und fliesst in den Tauchbehälter zurück. Das Trocknen der Korken geschieht bei niedrigerer Drehzahl der Trommel mittels eines starken Gebläseluftstromes. Nach dem Trocknen können die Korken bedruckt werden.
Es hat sich als besonders vorteilhaft erwiesen, einen derart schnellen Gebläseluftstrom zu verwenden, dass die Korken in der Siebtrommel nach jedem Umlauf in Schwebe gebracht werden. Hierdurch entsteht ein vollkommen gleichmässiger dünner Überzug, der jeder Formänderung der Korkoberflächen folgt. Auf diese Weise behandelte Korken zeigen unter dem Mikroskop eine unverändert erhalten gebliebene Zellstruktur, die für die Elastizität und das Dichtvermögen von grösster Wichtigkeit ist. Der dünne elastische Film aus Polyamid und Wachs überzieht lückenlos die gesamte Korkoberfläche bis in die tiefst gelegenen Hohlräume. Da der Film selbst nur etwa 14 % Wasser aufnimmt, wird auch nur eine geringe Flüssigkeitsmenge in das Korkinnere weitergeleitet.
Hierdurch behält der Kork eine gewisse Härte und wird nicht, wie bisher oft dur Fall, durch die ungehinderte Flüssigkeitsaufnahme so weich, dass er bei leicht ansteigendem Druck in der Flasche aus der Flaschenöffnung gepresst wird.
Bei der Durchführung des Verfahrens hat es sich weiterhin als vorteilhaft erwiesen, dass man der beschriebenen Tauchlösung einen gewissen Anteil Äthylcellulose zusetzt. Druch diese Massnahme wird das Haftvermögen des Films auf dem Kork noch gesteigert.
Weiterhin hat es sich als vorteilhaft erwiesen, einen Teil des Äthylalkohols, z. B. 50 so, durch Isopropylalkohol zu ersetzen. Hierdurch wird ein Gelieren der Tauchlösung nach längeren Standzeiten vermieden.
Versuche haben gezeigt, dass es möglich ist, die Tauchlösung durch Zugabe geeigneter Farbstoffe so weit einzufärben, dass die Korken nach dem Trocknen ansprechender aussehen. Der Farbstoff ist im Film eingeschlossen und wird nicht durch den Flascheninhalt extrahiert.
Die Gleiteigenschaften des Films, die durch Ver ändern des Wachsanteiles auf das gewünschte Mass einstellbar sind, können durch einen geringen Zusatz von alkohollöslichem Silikon ebenfalls vorteilhaft beeinflusst werden.
Durch das Tauchen in der hochprozentigen Alkohollösung werden die Korken bis in die Tiefen der Hohlräume hinein stcril gemacht. Nach dem Trocknen besteht jedoch die Gefahr, dass durch den Vorgang des Bedruckens die Oberflächen wieder infiziert werden.
Deshalb ist cs vorteilhaft, die Korken vor dem Ver packcn in Polyäthylenbeutel oder unmittelbar vor dem Verkorken in einer Durchlaufapparatur mit ozoncrzeugenden UV-Lampen zu bestrahlen und somit wieder steril zu machen.
Das erfindungsgemässe Verfahren der Korkenbehandlung hat sich cbenfalls sehr gut bei sogenannten verschönten Korken bewährt. Das sind Korken meist minderer Qualität, deren Hohlräume durch ein Trommelverfahren mit Korkmehl und Leim ausgefüllt werden.
Durch ein Behandeln nach dem beschriebenen Verfahren werden diese Korken wesentlich verbesscrt. Die Tauchlösung dringt in die mcist weitporige Korkmehl-Leimfüllung hinein und verbindet nach dem Trocknen die einzelnen Partikel zu einer gut haftenden elastischen Masse. Ein Herausbröckeln beim Vcr- oder Entkorken wird hierdurch verhindert.
Verwendet man anstelle von in Wasser und Athyl- alkohol löslichem Polyamid Versamid 961-62 und als Alkohol Isopropylalkohol, in welchem dieses hochmolekulare Produkt löslich ist, so kann die Verfahrensweise bei gleichen positiven Ergebnissen vereinfacht werden.
Process for the impregnation and sterilization of bottle corks
The present invention relates to a method for impregnating and sterilizing bottle corks.
In the past, cut bottle corks were delivered to the consumer by the manufacturer without any further treatment. Before use, the corks were made sterile and plasticized, if necessary, by placing them in one to two percent sulfurous acid for about 24 hours and then centrifuging off the acid.
Treatment with sulphurous acid damages the cork, especially if it is left on for a long time. The main constituents of the cork, suberin and lignin, are destroyed, the cork becomes inelastic, permeable to liquids and easily crumbles. Often, after corking, the lignin sulfonic acid that is formed causes the wine to be cloudy.
For some years now, the manufacturer has provided the bottle corks with a lubricious coating of high-melting waxes by tumbling them on, sterilized them by fumigating them with sulfur dioxide and shipping them in welded polyethylene bags. Due to the wax film, the corks are so slippery that they can be processed cold or hot on bottle filling machines without first soaking. The disadvantage is that when the wax is rolled up, only a film of individual flakes of wax forms on the outer surfaces of the corks. The cork flour inside the cavities is not fixed by the wax. It can get into the bottle during or after it is closed and lead to the formation of cork clouds.
Attempts have also been made to coat corks with a cohesive wax film by dipping them in aqueous wax emulsions, which also lines the inner cavities. However, this is only possible if the relatively high surface tension of such emulsions is eliminated by adding wetting agents. These wetting agents and the emulsifiers contained in the wax emulsion are disadvantageous for the contents of the bottle. In addition, the drying process after diving is lengthy and expensive. At the contact points of the corks, drops of emulsion easily form, which leave thicker wax points after drying.
It is already known to dip corks in molten paraffin or paraffin-resin mixtures. Apart from the complicated handling of the process, such coatings are difficult to apply in a uniform thickness. The adhesion of the films is insufficient and smaller voids are not detected.
It has also been proposed to drum corks together with low-melting plastic powder for a long time until the cavities are also filled, and then to melt the powder together by heating the corks to a temperature of 100 to 120 ° C. However, as is known, the elasticity of cork is impaired at these temperatures. This occurs especially when one is heated for a long time in order to also melt the plastic powder in the deeper cavities in the cork interior. In addition, a cork, the cavities of which are filled with plastic, no longer has the desired uniform elasticity.
It has also been proposed to dip corks in a solution of alcohol-polyamide or to spray or spread this solution onto corks.
After the solvent has evaporated, a thin polyamide film is created. However, it has been shown that corks treated in this way, in almost all cases, could no longer be pulled with a corkscrew. The polyamide film stuck the corks in the bottle neck, and uncorking was only possible by crumbling the corks.
Another method suggests covering only the top and bottom as well as a short piece of the adjacent cylindrical surface with a polyamide film. Although this reduces the risk of sticking, this method is not suitable for large-scale implementation. In addition, most of the cylindrical surface and the cavities of the corks are unprotected.
The invention is based on the object of providing bottle corks with a uniformly thin, slippery, firmly adhering and protective film which is physiologically harmless. Furthermore, it should protect against infestation by the cork moth and prevent mold formation. It should be equally suitable for cold and hot filling and should not affect the taste or smell of the contents of the bottle. Furthermore, it should enable effortless corking and uncorking.
A method has now been found according to which corks can be treated in such a way that they meet the requirements mentioned. It was also found that these corks are no longer drawn into the neck of the bottle after corking by the vacuum created during cooling, even when they are hot-filled, in particular with the flooding process.
According to the invention, this is achieved by placing the corks in a solution containing alcohol, preferably ethyl alcohol or a mixture thereof with isopropyl alcohol, water, polyamide and alcohol-soluble wax, in particular hydrogenation products of natural fats with acid number 0-10, saponification number 1-20, dropping point 55 -75 and density 0.95-0.98, then immersed in a rotating sieve drum, preferably first centrifuged and then, expediently at a low speed of the sieve drum, dried in an air stream.
example
An immersion solution is prepared which consists of 3 parts of polyamide and 3 parts of the hydrogenation product of natural fats with acid number 0-2, saponification number 1-15, dropping point 5661 and density 0.95-0.98, 84 parts of ethyl alcohol and 10 parts of water .
The corks filled into a sieve drum are immersed in this solution with the drum. Due to the low surface tension, the solution penetrates the pores and cavities of the corks in a very short time.
The drum is then swiveled up out of the solution and set in rotation. The excess part of the solution is spun off and flows back into the immersion tank. The corks are dried at a lower speed of the drum by means of a strong air stream. After drying, the corks can be printed.
It has proven to be particularly advantageous to use such a rapid blown air flow that the corks are brought into suspension in the sieve drum after each revolution. This creates a completely even, thin coating that follows every change in shape of the cork surface. Corks treated in this way show under the microscope an unchanged cell structure, which is of the greatest importance for elasticity and sealing capacity. The thin, elastic film made of polyamide and wax completely covers the entire cork surface down to the deepest cavities. Since the film itself only absorbs about 14% water, only a small amount of liquid is passed into the interior of the cork.
As a result, the cork retains a certain hardness and does not, as has often been the case before, become so soft due to the unimpeded absorption of liquid that it is pressed out of the bottle opening when the pressure in the bottle increases slightly.
When carrying out the process, it has also proven advantageous to add a certain proportion of ethyl cellulose to the dipping solution described. This measure increases the adhesion of the film to the cork.
Furthermore, it has proven advantageous to use some of the ethyl alcohol, for. B. 50 so to be replaced by isopropyl alcohol. This prevents the dipping solution from gelling after long periods of standing.
Tests have shown that it is possible to color the dipping solution by adding suitable dyes so that the corks look more appealing after drying. The dye is trapped in the film and is not extracted through the contents of the bottle.
The sliding properties of the film, which can be adjusted to the desired level by changing the proportion of wax, can also be advantageously influenced by adding a small amount of alcohol-soluble silicone.
By immersing in the high-percentage alcohol solution, the corks are made sturdy down to the depths of the cavities. After drying, however, there is a risk that the surfaces will be infected again by the printing process.
It is therefore advantageous to irradiate the corks with ozone-generating UV lamps before packing them in polyethylene bags or immediately before corking in a continuous apparatus, and thus make them sterile again.
The method of cork treatment according to the invention has also proven itself very well in so-called embellished corks. These are mostly corks of inferior quality, the cavities of which are filled with cork flour and glue using a drum process.
By treating according to the method described, these corks are significantly improved. The dipping solution penetrates the mcist wide-pored cork flour glue filling and, after drying, connects the individual particles to form a well-adhering elastic mass. This prevents it from crumbling out when corking or uncorking.
If, instead of polyamide, which is soluble in water and ethyl alcohol, Versamid 961-62 is used and isopropyl alcohol, in which this high molecular weight product is soluble, is used as the alcohol, the procedure can be simplified with the same positive results.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19671642204 DE1642204C3 (en) | 1967-02-25 | 1967-02-25 | Process for impregnating and sterilizing bottle corks |
Publications (1)
Publication Number | Publication Date |
---|---|
CH497253A true CH497253A (en) | 1970-10-15 |
Family
ID=5684164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH262568A CH497253A (en) | 1967-02-25 | 1968-02-23 | Impregnation and sterilisation of bottle - corks |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH497253A (en) |
DE (1) | DE1642204C3 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3516633A1 (en) * | 1985-05-09 | 1986-11-13 | Otto Innsbruck Berker | METHOD FOR IMPREGNATING BOTTLE CORKS TO IMPROVE THE SEALING EFFECT |
DE3835042A1 (en) * | 1988-10-19 | 1990-04-19 | Soberana Corticeira Lda | Method for treating the surfaces of cork products |
GB9519972D0 (en) * | 1995-09-28 | 1995-11-29 | Ag Patents Ltd | Improved container stoppers |
DE10008512C2 (en) * | 2000-02-24 | 2003-06-18 | Linn High Therm Gmbh | Device for treating bottle corks |
ITBA20120015A1 (en) * | 2012-03-01 | 2013-09-02 | Emitech S R L | METHOD TO EXTRACT ANOMALOUS AROMATIC COMPOUNDS AND THE 2,4,6, TRICHLOROANISOL (TCA) FROM THE CAPS AND THE CORK OF NATURAL CORK THROUGH A CONTINUOUS THERMAL PROCESS ASSISTED BY ELECTROMAGNETIC ENERGY TO HYPERFREQUENCES. |
-
1967
- 1967-02-25 DE DE19671642204 patent/DE1642204C3/en not_active Expired
-
1968
- 1968-02-23 CH CH262568A patent/CH497253A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE1642204A1 (en) | 1971-01-21 |
DE1642204C3 (en) | 1974-04-25 |
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