Uppfinnare: L. Borgstedt och S. Harding.
Inventors: L. Borgstedt and S. Harding.
Vid tillverkning av s. k. kompositionskork pressas granulerad kork med eller utan bindemedel i en form under visst tryck och behandlas pa lampligt satt, for att kornen skola halla samman, dt trycket avlagsnas. I pa detta sat framstallda foremal uppsta som regel sma haligheter eller kanaler, vilka i vissa fall kunna valla olagenheter vid produktens anvandning. Dessa olagenheter kunna bli aktuella t. ex. vid anyandning av kapsylinlagg av kompositionskork. Vid framstallning av dylika kapsylinlagg formas korkmassan till massiva eller rOrformiga stavar, som skaras I skivor av lamplig tjocklek. Man har tidigare forsokt att genom mekanisk inguidning forse sadana skivor med ett ytligt overdrag av paraffin eller liknande amnen, men denna metod har ej medfort fullgod impregnering. Man har aven doppat skivor av kompositionskork i smalt paraffin eller liknande, varigenom visserligen tatare impregnering erhallits, men impregneringsmedlet har ej heller harvid i namnyard grad format in.tranga i skivan. Deana metod har liven det felet, att skivans dimensioner Andras, huvudsakligen pa grund av den relativt 1A.nga uppvarmningstid och hoga temperatur, som erfordras, om impregneringen skall 1 flagon storre utstrackfling trfinga in i hfiligheterna. Slutligen är det kant att impregnera fOremal under vakuum. In the manufacture of so-called composition corks, granulated corks with or without binder are pressed into a mold under a certain pressure and treated in an appropriate manner, so that the grains will stick together, so that the pressure is relieved. In this case, the objects produced are usually small cavities or channels, which in some cases can cause irregularities in the use of the product. These irregularities may become relevant e.g. when inhaling cap caps of composition caps. In the manufacture of such capillary layers, the cork mass is formed into solid or tubular rods, which are cut into sheets of suitable thickness. Attempts have previously been made to provide such boards with a mechanical coating of paraffin or similar substances by mechanical guidance, but this method has not resulted in adequate impregnation. Sheets of compositional cork have also been dipped in narrow paraffin or the like, whereby, admittedly, tighter impregnation has been obtained, but the impregnating agent has not been intruded into the board to any great extent. This method has the disadvantage that the dimensions of the disc are different, mainly due to the relatively long heating time and high temperature required if the impregnation is to penetrate into the cavities by a slightly larger extent. Finally, it is edge to impregnate the form under vacuum.
Foreliggande uppfinning avser att vid framstallning av kapsylinlagg eller liknande foremai av kompositionskork forst med ett flytande impregneringsmedel under vakuum utfylla haligheter i stavar utformade av denna massa och darefter skara dessa stavformiga amnen I tvarriktningen till skivor. Uppfinningen kfinnetecknas huvudsakligen darav, att stavformiga amnen av sadan kork nedsankas i ett bad av lampligt impregneringsmedel, I. ex. smalt paraffin, att luften antingen fore eller efter neddoppningen ,avlagsnas ur stavarnas haligheter medelst vakuum, samt att stavarna, medan de aro neddoppade i hadet, Ater sattas under atmosfarstryck eller eventuellt hogre tryck, varvid haligheterna fyllas samt att det stavformiga amnet daref ter skares i tvarriktningen till skivor, villc.a eventuellt tackas med en s. k. rondeil .av lampligt material, sasom lackerat papper, tenn eller dylikt. The present invention relates to the production of capsules or similar forms of composition cork first with a liquid impregnating agent under vacuum filling cavities in rods formed of this mass and then cutting these rod-shaped blanks in the transverse direction into discs. The invention is mainly characterized by the fact that rod-shaped blanks of such a cork are immersed in a bath of suitable impregnating agent, e.g. narrow paraffin, that the air, either before or after immersion, is removed from the cavities of the rods by vacuum, and that the rods, while immersed in the heat, are again placed under atmospheric pressure or possibly higher pressure, whereby the cavities are filled and the rod-shaped blank is then cut into the transverse direction to boards, villc.a possibly be thanked with a so-called round part .of suitable material, such as lacquered paper, tin or the like.
I det foljande beskrives forfarandet narmare. Det stavformiga anmet sankes ned ett bad av impregneringsvatska i ett slutet karl eller en kammare, som forst sattes under ett lampligt undertryck och sedan sattes under atmosfarstryck eller h5gre tryck, varvid fyllningsmedlet pressas in i haligheterna. Genom detta fOrfarande tvingas medlet, utan starkare upphettning an som betingas av medlets smaltpunkt, in i alla utat oppna haligheter. Medlets inpressning regleras, t. ex. genom lampligt avpassat tryck, sa att det intranger till bestamt onskat djup i staven, och darvid appliceras just dar utfyllningen fir vasentlig for astadkommande av forbattrad tat-fling mellan kapsylinlagget °eh flaskhalsen, namligen i en ringformig zon Mmed inlaggets yttre kant. Genom att luften evakueras ur staven radiellt, komma just de haligheter och kanaler, som kunna fororsaka lackage genom de fardiga kapsylinlaggen att bli fyllda med medlet i fraga. Korkstaven kan aven efter denna behandling justeras nagot for att erhalla en mot kapsylens hire svarande diameter, om det skulle bliva advandigt. Darefter skares staven pa tvaren till skivor. Dessa Oro pa ytan fria Iran impregneringsmedel med undantag av det i haligheterna befintliga, vilket forhallande är av betydelse, dã det galler att forse skivorna med s. k. rondeller av lackerat papper, tennfolium eller dylikt. Fastsattandet air dessa forsvaras namligen vasentligt av en ytlig paraffinering eller dylikt. Ytbehandlade skivor ha aven benagenhet att klibba samman, i synnerhet om de staplas pa varandra. Delta kan i vissa fall medfora olagenheter. Slutligen ãr det ibland icke onskvart att paraffin eller liknande impregneringsmedel kommer i beroring med innehallet i den flaska, som skall forslutas. Detta är t. ex. fallet vid 61, som skall pasteuriseras. Denna olagenhet elimineras vid kapsylinlagg framstallda enligt foreliggande metod, 2— — darigenom att fyllningsmedlet lokaliseras till skivans ytterkant. Metoden kan aven tillampas pa de rOrformiga stavarna. Som fyllningsmedel kan anvandas paraffin, gummilosning 131; a. De sa erhallna skivorna kunna anvandas med eller utan rondeller sasom kapsylinlagg eller liknande packningar. In the following, the procedure is described in more detail. The rod-shaped object was immersed in a bath of impregnation liquid in a closed vessel or chamber, which was first placed under a light negative pressure and then placed under atmospheric pressure or higher pressure, the filler being pressed into the cavities. By this process, the agent, without stronger heating due to the melting point of the agent, is forced into all outwardly open cavities. The pressure of the agent is regulated, e.g. by appropriately adjusted pressure, so that it penetrates to a certain desired depth in the rod, and thereby the filling is applied just essential for achieving improved tat-fling between the cap insert or the neck of the bottle, namely in an annular zone with the outer edge of the insert. By evacuating the air radially from the rod, the cavities and ducts that can cause leakage through the finished capillary layers become filled with the agent in question. Even after this treatment, the cork rod can be slightly adjusted to obtain a diameter corresponding to the hire of the cap, should it become unsightly. Then cut the rod on the wire into slices. These concerns on the surface free Iran impregnating agent with the exception of that present in the cavities, which ratio is important, since it is necessary to provide the boards with so-called discs of lacquered paper, tin foil or the like. Namely, the attachment of these is essentially defended by a superficial paraffin or the like. Surface-treated boards also have a tendency to stick together, especially if they are stacked on top of each other. Participation may in some cases lead to irregularities. Finally, it is sometimes undesirable for paraffin or similar impregnating agents to come into contact with the contents of the bottle to be sealed. This is e.g. the case at 61, to be pasteurized. This malfunction is eliminated in capsule pads made according to the present method, by locating the filler to the outer edge of the disc. The method can also be applied to the tubular rods. Paraffin, rubber solution 131 can be used as filler; a. The discs thus obtained can be used with or without pads such as cap liners or similar gaskets.