SE187766C1

SE187766C1 -

Info

Publication number: SE187766C1
Authority: SE
Publication date: 1963-01-01

Description

Uppfinnare: W Loliger Prioritet begard fran den 20 februari 1959 (Schweiz) Fdreliggande uppfinning hanfor sig till ett forfarande for frarnstallning av sterila forpackningar av ett atminstone delvis av organiska amnen bestaende forpackntingsmaterial. Det filmes fOrfaranden for att framstalla fullstandigt sterila flytande eller fasta amnen, sAsom livsmedel, dryeker och farmaceutiska produkter eller hjalpamnen, eller att underkasta dem en behandling, som Or dem bakteriefria. Det dr aven kant att fylla mjiilk och andra vatskor under sterila betingelser pa bleekburkar och att tillsluta dessa hermetiskt. Vidare har man redan forsokt att fylla mjolk under sterila betingelser i de vanliga glasflaskorna, som sedan tillslutas med lamp-hg kapsyl. De relativt hoga kostnaderna for bleckburkar och det vid flaskor sarskilt ogynnsamma viktfOrhallandet mellan vara och fOrpackning liksom den dyrbara returen och rengeringen av flaskorna inverkar dock fordyrande i sadan utstrackning, att sadanaforpackningar endast i undantagsfall aro ekonomiska for forbrukningsvaror sasom mjolk. Vid glasfla.skor tillkommer, att det vanligen for framstallning av flaskorna anvanda glaset icke kan utharda upprepad upphettning till den for sterilisering erforderliga temperaturen av c:a 250° C eller mera. Det finnes a andra sidan forpaekningar, som framstallas av ett atminstone till en del av organiska amnen bestaende forpackningsmaterial, exempelvis plast, sásom polyeten, eller atminstone pa ena sidan med plast overdraget papper. For steril forpaekning av en steril vara i forpackningar av sadant material är det nodva.ndigt att sterilisera atminstone den senare insidan av forpackningen bildande materialsidan, varvid i regel endast en varmebehandling med sakerhet medfor fullstandigt fOrintande av bakterierna. Harfiir fordras emellertid en sterilise ringstemperatur av e:a 200° C eller mer. Det ar dock svart att genomfora en. sadan sterilisering, eftersom detta atminstone till en del av organiska amnen bestaende material an mycket varmekansligt. Material, som heft eller delvis best& av plast, mjukna redan vid temperaturer under den erforderliga steriliseringstemperaturen. A andra sidan borjar vid vissa papperstyper redan vid temperaturer ovanfor 200° C en fOrkolning, medan papperet blir sprott vid lagre temperatur eller missfargas. Vid plastoverdraget papper, som upphettas genom hela sin tjocklek, far den upphettade plasten joke komma I berbring med styr- eller transportmedel, vilket forutsatter ett komplicerat styrflings- och transportsystem. Dessutom maste upphettningstemperaturen hallos p lagsta mojliga, for steriliseringen natt och jamnt tillrackliga niva for att man med sakerhet skall forebygga skadlig forandring air det behandlade materialet. Detta kra.ver lingre upphettningstid, vilket vid behandling av en lop ande bana av fOrpackningsmaterialet forutsatter upphettning langs ett relativt langt stycke air banan. Inventor: W Loliger Priority claimed from February 20, 1959 (Switzerland). The present invention relates to a process for the manufacture of sterile packages of a packaging material consisting at least in part of organic substances. Procedures are made for producing completely sterile liquid or solid substances, such as foodstuffs, beverages and pharmaceuticals or adjuvants, or for subjecting them to a treatment which is germ-free. It is also advisable to fill milk and other water bottles under sterile conditions in bleach cans and to seal them hermetically. Furthermore, attempts have already been made to fill milk under sterile conditions in the usual glass bottles, which are then closed with a lamp-hg cap. However, the relatively high costs of tin cans and the particularly unfavorable weight ratio between goods and packaging in bottles as well as the expensive return and cleaning of the bottles have a costly effect to such an extent that such packaging is only in exceptional cases economical for consumables such as milk. In the case of glass bottles, it is added that the glass normally used for the production of the bottles cannot withstand repeated heating to the temperature of about 250 ° C or more required for sterilization. On the other hand, there are packages which are made of a packaging material consisting of at least part of the organic substances, for example plastic, such as polyethylene, or at least on one side with plastic-coated paper. For sterile packaging of a sterile product in packages of such material, it is necessary to sterilize at least the later inside of the packaging forming the material side, as a rule only a heat treatment with certainty entails complete annihilation of the bacteria. However, a sterilization temperature of about 200 ° C or more is required. However, it is black to implement one. such sterilization, since this material, which is at least partially composed of organic substances, is very heat-sensitive. Materials, such as adhesives or partly made of plastic, soften already at temperatures below the required sterilization temperature. On the other hand, with certain types of paper, a char is already starting at temperatures above 200 ° C, while the paper becomes brittle at lower temperatures or discolored. In the case of plastic-coated paper, which is heated through its entire thickness, the heated plastic joke may come in contact with control or transport means, which presupposes a complicated control flap and transport system. In addition, the heating temperature must be maintained at the lowest possible level, for sterilization at night and at a sufficiently sufficient level to prevent harmful change in the treated material with certainty. This requires a longer heating time, which when processing a running web of the packaging material presupposes heating along a relatively long stretch of air web.

Foreliggande uppfinning giir det rnojligt att undanroja de ovan beskrivna olagenheterna och svarigheterna. Forfarandet enligt uppfinningen kannetecknas av att fore formningen air forpackningen den materiaisida, som kommer att bilda forpackningens insida, upphettas till steriliseringstemperatur genom uppvarraning, m.edan samtidigt den materialsida, som senare bildar forpaekningens utsida, in-cm steriliseringszonen kyles genom kontakt med ett varme upptagande medel. Med hjalp air det ovan angivna forfarandet ar det mojligt att utan skada eller efterfoljande forandring av det behandlade materialet genomfora Dupl. kl. 30 i: 1 2— — upphettningen av den forpackningens insida bildande materialsidan till betydligt hogre temperatur och under vasentligt kortare tid. The present invention makes it possible to eliminate the above-described disadvantages and responsibilities. The process according to the invention is characterized in that the preforming air package the material side which will form the inside of the package is heated to sterilization temperature by heating, while at the same time the material side which later forms the outside of the package is cooled by contact with a heat absorbing zone. average. With the help of the above procedure, it is possible to carry out Dupl without damage or subsequent change of the treated material. at 30 i: 1 2— - the heating of the material side forming the inside of the package to a significantly higher temperature and for a substantially shorter time.

For framstallning av sterila forpackningar ar det tillrackligt, om endast ytan pa den insi- dan av fOrpackningen bildande materialsidan npphettas till steriliseringstemperatur. Genom den samtidiga kylningen under upphettningen av den forpackningens utsida bildande mate- rialsidan blir det mojligt att aven i sadant material iistadkomma en sadan temperaturgradient, att Over ,storre delen av materialets tjocklek installer sig en temperatur, som Jig- ger avsevart under den upphettade materialsidans yttemperatur. Vid plastoverdraget pap- per kan plastsidan exempelvis upplietlas till 250° C utan att papperet utsattes fOr nagra skador. Vid behandling av helt av plast besta- ende material är det mojligt att upphetta den forpackningens insida bildande materialsidan till 250° C eller dariiver, medan pla.sten pa den utsidan bildande materialsidan hindras att mjukna genom tillracklig kylning av denna sida. Pet är da mojligt att leda den kylda sidan Over fasta styrytor utan att materialet klibbar fast vid .dessa pt grund av uppvarmningen. Den materialsida, som skall steriliseras, kan lampligen upphettas genom varmestraining eller med hjalp av en gas- eller Ongformig varmebarare. Den materialsida, som skall kylas, kan lampligen kylas genom pablasning av ett gas- eller angformigt kylmedel eller genom pasprutning av en kylvatska. Vid anvandning av banformigt material kan den kylda sidan lampligen framforas liggande pa en kyld yta. For the production of sterile packages, it is sufficient if only the surface of the material side forming the inside of the package is heated to sterilization temperature. By the simultaneous cooling during the heating of the material side forming the outside of the package, it becomes possible even in such a material to have such a temperature gradient that Over, most of the thickness of the material settles a temperature which Jigger significantly below the surface temperature of the heated material side . In the case of plastic-coated paper, the plastic side can, for example, be raised to 250 ° C without the paper being exposed to any damage. When treating completely plastic material, it is possible to heat the inside of the packaging forming the inside of the package to 250 ° C or thereabouts, while the plastic on the outside forming the side of the material is prevented from softening by sufficient cooling of this side. It is then possible to guide the cooled side over fixed guide surfaces without the material sticking to these at the moment due to the heating. The material side to be sterilized can be suitably heated by heat training or with the aid of a gas or non-shaped heat exchanger. The material side to be cooled can suitably be cooled by blowing a gaseous or vaporous coolant or by fitting a coolant. When using web-shaped material, the cooled side can suitably be advanced lying on a cooled surface.

Foreliggande uppfinning omfattar Oven en anordning for genomfOrande av detta forfarande. Anordningen enligt uppfinningen kannetecknas av transportmedel air forpackningsmaterialet, vilka leda materialet till en maskin for formning av forpackningar, och vidare av en upphettningsanordning for upphettning av den fOrpackningens insida bildande materialsidan och av en kylanordning inom steriliseringszonen for kylning av den forpackningens utsida bildande materialsidan. Varmeanordningen kan lampligen utformas som ett elektriskt stralelernent eller omfatta en blasteranordning, med vilken gas- eller angformig varmebarare riktas mot den materialsida, som skall upphettas. Vid behandling av banformigt material Or del limpligt att anordna en kyld styryta, lampligen av me-tail, for den kylda bansidan, mot vilken yta banan ligger an Over hela sin bredd under hela upphettningsstrackan. Styrytan kan harvid lampligen bildas av mantelytan pa en roterbar och invandigt av kylmedel genomstrOmmad trumma, som vid lopande bana forsattes i rotation av denna. Slutligen kan banformigt material Oven fans Over minst ett transversellt mot banans langdriktning krOkt formstycke, sa. att utanfOr detta den bansida, som skull upphettas, bildar en konvex yta, och den kylda bansidan en konkav via, varvid man anordnar en kylanordning, med vilken ett kylmedel kan riktas mot den konkava bansidan. The present invention further comprises an apparatus for carrying out this method. The device according to the invention can be characterized by transport means of the packaging material, which lead the material to a machine for forming packages, and further by a heating device for heating the material side forming the inside of the package and by a cooling device within the sterilization zone for cooling the outside forming side of the package. The heating device can suitably be designed as an electric jet element or comprise a blaster device, with which a gaseous or vaporous heat carrier is directed towards the material side to be heated. When treating web-shaped material, it is partly mandatory to provide a cooled guide surface, preferably of metal, for the cooled web side, against which surface the web abuts over its entire width during the entire heating section. The guide surface can then be suitably formed by the mantle surface on a rotatable and internally flowing drum of coolant, which was continued to rotate therein on a running path. Finally, web-shaped material Oven fans Over can at least one transverse to the longitudinal direction of the web krOkt molding, said. outside this, the web side to be heated forms a convex surface, and the cooled web side a concave via, a cooling device being provided with which a coolant can be directed towards the concave web side.

Uppfinningen kommer i det f5ljande att beskrivas nfirmare med hanvisning till bifogad ritning, vilken som exempel visar nagra utfOringsformer. Fig. 1 yisar en upphettnings- och kylanordning for en lopande bojlig bana med en kyld mctallisk styryta for banan och upphettning av den bansida, som skall steriliseras, medelst en gas- eller angformig varmebarare. Fig. 2 Or en sidovy och fig. 3 ett snitt efter linjeni fig. 2 av en upphettnings- och kylanordning for en lopande bojlig bana med upphettning av den bansida, som skall steriliseras, med hjalp av elektriska varmestralare och styrning av banan Over den kylda mantelytan av en roterbar trumma. Fig. 4 och fig. 5 visa en upphettnings- och kylanordning fOr en lOpande bojlig bana med upphettning av den ena bansidan genom varmestralning och kylning av den andra bansidan genom pasprutning av en kylvatska eller kylgas. The invention will be described in more detail below with reference to the accompanying drawing, which shows, by way of example, some embodiments. Fig. 1 shows a heating and cooling device for a running flexible web with a cooled metallic guide surface for the web and heating of the web side to be sterilized, by means of a gaseous or steam-shaped heat carrier. Fig. 2 is a side view and Fig. 3 a section along the line in Fig. 2 of a heating and cooling device for a running flexible web with heating of the web side to be sterilized, with the aid of electric radiators and control of the web Over the cooled the mantle surface of a rotatable drum. Fig. 4 and Fig. 5 show a heating and cooling device for a running flexible web with heating of one web side by heat radiation and cooling of the other web side by fitting a cooling water or cooling gas.

Den i fig. 1 visade anordningen omfattar en krakt metallisk styryta 1 for den med brutna linjer inritade banan 2. Denna bestar av plastbelagt papper. Banan 2 Or fOrd sa Over styrytan 1, att den anligger mot denna med sin papperssida Over hela sin bredd. Innan banan, som drives med en icke visad transportmekanism, kommer upp ph styrytan 1 Jigger den an mot valsen 3. Styrytan 1 Midas av en operforerad plat 4, som tillsluter ett halrum 5. Delta Or vid gavlarna tillslutet medelst p10-tar 6 och 7. Dar banal' 2 lamnar styrytan 1 mynnar en rad fordelarledningar 8 i halrummet 5. Ledningarna 8 Oro anslutna till en havudledning 9, som star i forbindelse med en icke visad kalla fOr ett kylmedel, exempelvis k.ylvatten. I narheten av det stalk, dOr banan Piper upp pa kylytan, avledes kylvatskan genom ledningar 10 fran halrummet, vilka ledningar mynna i en samlingsledning 11, sO att det i halrammet infOrda kylmedlet kan avledas kontinuerligt. P0 avstand frail banan 2 Ore anordnade flera blasterror 12, som Oro anslutna till en tillfOrselledning 13 fOr en gas- eller angformig varmebarare, exempelvis vattenanga. Boren 12 Ore forsedda med hal 14, genom vilka varmebararen kan blasas mot ha-flans 2 plastbelagda sida. Den ovan beskrivna anordningen drives pa foljande sOtt. Genom halrummet 5 ledes, da. kylmedeltillforseln Or inkopplad, ett kylmedel, som kyler styrytan 1 intensivt. Harefter fores banan 2 Over styrytan och matas av namnda transportmekanism i pilens 14 riktning. Sedan inkopplas tillforseln av varmebarare, som biases mot banans 2 plastbelagda sida. Varmebararens temperatur kan exempelvis vara 400° C, medan kylvatskan har rumstemperatur. Varmebararen astadkommer en upphettning av den forpackningens insida bildande bansidan till en tem- — —3 peratur i narheten av varmebararens, medan den fOrpackningens yttersida bildande bansidan genom kontakten med den kylda styrytan Mlles vid en temperatur under 80° C. Harigenom fOrhindras varje skadlig forandring av den behandla.de banan. Man sorjer pa lampligt satt for att den fran denna anordning avgaende banan icke kommer i beroring med osteriliserad atmosfar, exempelvis genom att banan ledes genom en under Overtryck staende och med steril luft fylld kanal. The device shown in Fig. 1 comprises a strong metallic guide surface 1 for the web 2 drawn with broken lines. This consists of plastic-coated paper. The web 2 Or fOrd said Over the control surface 1, that it abuts against it with its paper side Over its entire width. Before the web, which is driven by a transport mechanism (not shown), the ph guide surface 1 comes up. Jigger it against the roller 3. The guide surface 1 is midas of an unperforated plate 4, which closes a cavity 5. Where the banal '2 leaves the guide surface 1, a series of distributor lines 8 open into the cavity 5. The lines 8 are connected to an offshore line 9, which is connected to a cold (not shown) for a coolant, for example cooling water. In the vicinity of the stalk, where the web beeps up on the cooling surface, the cooling liquid is diverted through lines 10 from the hall space, which lines open into a collecting line 11, so that the coolant introduced into the hall frame can be diverted continuously. At a distance from the web 2 Ore arranged several blaster tubes 12, which Oro connected to a supply line 13 for a gaseous or vaporous heat carrier, for example water vapor. The drill 12 Ore is provided with a slide 14, through which the heat carrier can be blown towards the plastic-coated side of the sea flange 2. The device described above is operated in the following manner. Through the hall 5 is led, then. coolant supply Or connected, a coolant that cools the control surface 1 intensively. Then the web 2 is passed over the guide surface and is fed by the said transport mechanism in the direction of the arrow 14. Then the supply of heat exchangers is connected, which is biased towards the plastic-coated side of the web 2. The temperature of the heat bar can be, for example, 400 ° C, while the cooling liquid has a room temperature. The heat carrier causes the inside of the package forming the inside of the package to be heated to a temperature close to that of the heat carrier, while the outside of the package forming the outside of the package through the contact with the cooled guide surface is milled at a temperature below 80 ° C. the treat.de banana. It is conveniently ensured that the web departing from this device does not come into contact with an unsterilized atmosphere, for example by passing the web through a duct under pressure and filled with sterile air.

Vid utforingsformen enligt fig. 2 och 3 le-des banan 20 over mantelytan till den roterbart lagrade trumman 21. Denna bestar av tva halvor 22 och 23, vilka hallas samman med bultar 24. Trumman Sr lagrad roterbart pa axeln 25 med kullager 26 och 27. Axeln 25 har tvh axiella borrhal 28 och 29, som stracka sig mot centrum av navpartiet. I radiell riktning forlopande borrhal 30 och 31 forbinda de axiella borrhalen med ringformiga rum 32 och 33, som skiljas frail varandra av en axeln med snavt spelrum omslutande skiva 34. Det ringformiga rummet 32 star genom kanaler 35-38 i forbindelse med ett av urtagningar i trummans omkrets bildat halrum 39. Dessa kanaler aro upptagna i var sin flans 40 i trumhalvan 23. I trurnhalvans 22 flansar 40a finnas kanaler 42-45, som forbinda halrummet 39 med del ringformiga ruinmet 33. Flansarna 40 och 40a arc forstallda 0 i fOrhallande till varandra. Halrummen 32 och 33 arc tatade mot lagren med packningar 46. Halrummet 39 Sr tatat utat med en packning 47. Over en del av trummans omkrets stracker sig en varmestralare 48, i vars inre en elektrisk varmespiral 48a Sr anordnad. Under driften av den ovan beskrivna anordningen -Mores ett kylmedel, exempelvis kylvatten, genom borrhalet 29. Detta strommar utht genom kan.alerna 35-38 till halrummet 39 och avgar frail detta genom kanalerna 43-45, for att avledas genom borrhalet 28 i axeln 25. Harigenom kyles intensivt den styrytan for banan 20 bildande mantelytan ph trumman och darmed aven den over hela sin bredd mot en del av styrytan anliggande banan 22. Detta forhindrar skadlig forandring av banan 20 till foljd av upphettningen av den bansida, som skall steriliseras. Banan frammatas av en icke visad transportmekanism i pilens 41 riktning, varvid trumman 21 fors.attes i rotation utan sliming i forhallande till banan. In the embodiment according to Figs. 2 and 3, the web 20 is guided over the mantle surface to the rotatably mounted drum 21. This consists of two halves 22 and 23, which are held together with bolts 24. The drum is rotatably mounted on the shaft 25 with ball bearings 26 and 27. The shaft 25 has two axial bores 28 and 29 which extend toward the center of the hub portion. Radially extending drill holes 30 and 31 connect the axial drill holes to annular spaces 32 and 33, which are separated from each other by a shaft 34 enclosing a disk with narrow clearance. the circumference of the drum formed a cavity 39. These channels are accommodated in their respective flanges 40 in the drum half 23. In the flanges 40a of the drum half 22 there are channels 42-45, which connect the hall space 39 with part annular ruin 33. The flanges 40 and 40a are formed in relation to each other. The cavities 32 and 33 arc tapered against the bearings with gaskets 46. The cavity 39 Sr is tapered outwards with a gasket 47. A heat radiator 48 extends over a part of the circumference of the drum, in the interior of which an electric heating coil 48a Sr is arranged. During operation of the device described above, a coolant, for example cooling water, is added through the bore 29. 25. This intensively cools the track surface of the web 20 forming the jacket surface ph drum and thus also the web 22 adjacent its entire width towards a part of the guide surface. This prevents harmful change of the web 20 as a result of the heating of the web side to be sterilized. The web is advanced by a transport mechanism (not shown) in the direction of the arrow 41, the drum 21 being continued in rotation without slimming in relation to the web.

Vid utforingsformen enligt fig. 4 och 5 styres en bane 50 sa Over tva formkroppar 51 och 52 med halvcirkelformig profil, att den insidan av forpackningen bildande sidan blir konkav, medan den fOrpackningens utsida bildande sidan blir konvex. Banan 50 frammatas av en icke visad transportmekanism i pilens 53 riktning. Mellan de bagge formkropparn.a 51 och 52 Sr anordnad en. elektrisk stralanordning 54, vilken anvandes for upphettning av den ena bansidan till steriliseringstemperatu- ren. Mellan de bagge formkropparna 51 och 52 stracker sig ett rOr 55 i banans 50 langdriktning. R5rets inre Sr anslntet till en tillforselledning 56 for kylfluidum. Som sadant anvandes exempelvis kylvatten eller kyltuft, som genom borrhal 57 i roret 55 riktas i :separata stralar mot den konkava bansidan. Av den krokta bansidan avlankas kylmedlet sa. nedat, att .det icke kommer i beroring med den bansida, som skall steriliseras. I manga fall Sr Set lampligt att filfSlligtvis halla den kylda banytan steriliserad anda tills den av materialet bildade forpackningen Sr fylld och hermetiskt tilIsluten. For delta andamal kan man I .kylmedlet inblanda ett steriliseringsmedel, exempelvis permanganat eller ozon, eller ocksa. bringa ett sadant steriliseringsmedel till kontakt med den forpackningens utsida bildande materialsidan fore, under eller efter upphettningen av materialet. In the embodiment according to Figs. 4 and 5, a web 50 is guided over two shaped bodies 51 and 52 with a semicircular profile, so that the side forming the inside of the package becomes concave, while the outside forming side of the package becomes convex. The web 50 is advanced by a transport mechanism (not shown) in the direction of the arrow 53. Between the rams shaped bodies.a 51 and 52 Sr arranged one. electric jet device 54, which is used to heat one web side to the sterilization temperature. Between the ram bodies 51 and 52 extends a tube 55 in the longitudinal direction of the web 50. The interior of the tube is connected to a cooling fluid supply line 56. As such, for example, cooling water or cooling tuft is used, which is directed through drill hole 57 in the tube 55 in separate jets towards the concave web side. From the curved track side, the coolant is de-elongated. nedat, that .it does not come into contact with the ban side, which is to be sterilized. In many cases it is appropriate to keep the cooled surface of the cooled sterilized spirit until the package formed by the material is filled and hermetically sealed. For delta andamal, the refrigerant may be mixed with a sterilant, for example permanganate or ozone, or also. contacting such a sterilant with the outside of the package forming the material side before, during or after heating the material.

Uppfinningen Sr icke begransad till de visade utforingsformerna. Salunda kan man Sven behandla material, som endast till en del bestar av organiska amnen, exempelvis en bojlig bane bestaende av plastbelagt pepper, som har ett inlagg i form av en aluminium,. folie. Som upphettningsanordning kan man Sven anvanda en med hjalp av en gas- eller angformig varmebarare upphettad stralare. The invention is not limited to the embodiments shown. Thus, Sven can be treated with materials which only partly consist of organic substances, for example a flexible web consisting of plastic-coated pepper, which has an inlay in the form of an aluminum. foil. As a heating device, Sven can be used with a radiator heated by means of a gas or steam-shaped heat exchanger.

Claims

Patent claims:

Process for the production of sterile packages of a packaging material consisting at least in part of organic substances, characterized in that the material side which is to form the inside of the package is heated to a sterilization temperature by heat action and at the same time the material side which is to form the outside of the package , the sterilization zone is cooled by contact with a heat absorbing agent.

Method according to claim 1, characterized in that the material side to be sterilized is heated by heat radiation.

Method according to claim 1, characterized in that the material side to be sterilized is heated with the aid of a gas or steam-shaped heat exchanger.

A method according to claim 1, characterized in that the material side to be cooled is cooled by applying a gaseous or vaporous coolant.

Method according to claim 1, characterized in that the material side to be cooled is cooled by spray-painting a cooling liquid.

6. An arcade according to claim 1 applied to the use of web-shaped material, characterized in that the web side to be cooled is guided by abutment against a cooled surface. 4— -

Apparatus for carrying out the method according to claim 1, characterized by a transport device for the packaging material (2), which leads this to a machine for forming packages, and further by a heating device (12; 48; 54) for heating to sterilization temperature of the packaging material. material side, which is to cover the inside of the package, and of a cooling device (5; 21; 55) within the sterilization zone for cooling the material side, which is to form the outside of the package.

Device according to claim 7, characterized in that the heating device is designed as an electrically heated jet device (48; 54).

Device according to claim 7, characterized in that the heating device comprises a blowing device (12), with which a gaseous or vaporous heat carrier can be bitten against the material side to be heated.

Device according to claim 7, for the treatment of web-shaped material, characterized in that the cooling device (5) is provided with a cooled, suitably metallic guide surface (4) for the web side to be cooled, against which surface the web abuts over its entire width. lung heating stage.

Device according to claim 10, characterized in that the guide surface is centered by the mantle surface into a rotatably mounted and internally flowing drum (21) of a coolant, which is salted in rotating balm during running balm.

Device according to patent claim 7, characterized in that the web is guided so over at least one transversely against the longitudinal force of the web (51, 52), that the web side to be heated, outside the mold part, forms a convex surface, () eh that the web side, to be cooled forms a concave surface, and there is a cooling device (51), by means of which a cooling fluid can be directed towards the concave web side. Request publications: Patentslerif ter frail Danmark 81 347.