CH258323A

CH258323A - Process for manufacturing an agglomerated cork roll, in particular for letterpress machines, and roll obtained by this process.

Info

Publication number: CH258323A
Authority: CH
Inventors: Puigsech Ramon Font
Original assignee: Puigsech Ramon Font
Priority date: 1946-01-15
Filing date: 1947-01-15
Publication date: 1948-11-30
Also published as: BE482408A

Description

  

  Procédé de fabrication d'un rouleau en     liège    aggloméré, notamment  pour machines     typographiques,    et rouleau obtenu par ce procédé.    La présente     invention.    comprend un pro  cédé de fabrication d'un rouleau en liège     ag-          glo@méré,    notamment pour machines typogra  phiques, par exemple rotatives, planes, mi  nerves, ou pour machines à impression litho  graphique, planes,     rotatives,    offset.  



  Ce procédé est caractérisé en ce qu'on  triture du liège jusqu'à ce que l'on     obtienne     un produit finement divisé, en ce qu'on ajoute  de l'huile végétale, du bitume de Judée et  du     vernis    lithographique, lesquels agissent  comme agglutinants, en ce qu'on bat l'ensem  ble pour obtenir une pâte homogène, en ce  qu'on dispose la, pâte ainsi obtenue dans un  moule. en ce qu'on la soumet à l'intérieur du  moule à une     pression    élevée pendant un  temps déterminé et en ce qu'on démoule après  séchage.  



  La présente invention comprend égale  ment un rouleau en liège aggloméré obtenu  par le procédé     indiqué        ci-dessus.     



  Dans une mise en     oeuvre    préférée du pro  cédé que     comprend.    l'invention, le rouleau dé  moulé est rectifié et cylindré et ensuite re  couvert au moyen d'au moins une couche d'un  vernis contenant de l'huile végétale, de l'es  sence de térébenthine, du vernis lithographi  que, de manière à imperméabiliser ledit rou  leau.

   On peut utiliser un moule en deux par  ties     semi-cylindriques        dans    lesquelles on  moule deux moitiés, du     rouleau,        ces    deux moi  tiés étant ensuite     assemblées    sur l'axe de ro-         tation    du     rouleau.    On peut     aussi    utiliser un  moule     cylindrique    de manière à obtenir un       rouleau        cylindrique,    un axe étant introduit  par pression dans ce rouleau.  



  Le rouleau obtenu au moyen du procédé  selon     l'invention    a l'avantage de permettre  une     admission    parfaite des encres ainsi que  leur distribution uniforme. La consistance du  liège aggloméré est telle qu'elle ne subit pra  tiquement pas de déformation. Un rouleau en  liège aggloméré peut donc être utilisé pen  dant un temps très long comparativement  aux rouleaux utilisés jusqu'à présent et pré  sentant des surfaces en gélatine, en cuir ou  en caoutchouc.  



  Le rouleau décrit a également l'avantage  de pouvoir     être    réparé facilement au cas où  sa,     surface    serait détériorée.



  Process for manufacturing an agglomerated cork roll, in particular for letterpress machines, and roll obtained by this process. The present invention. comprises a process for manufacturing a roll of agglomerated cork, in particular for typographic machines, for example rotary, flat, mid-rib, or for litho graphic, flat, rotary or offset printing machines.



  This process is characterized in that one triturates the cork until a finely divided product is obtained, in that vegetable oil, Judean bitumen and lithographic varnish are added, which act as agglutinants, in that the whole beats to obtain a homogeneous paste, in that the paste thus obtained is placed in a mold. in that it is subjected inside the mold to a high pressure for a determined time and in that it is demolded after drying.



  The present invention also comprises a roll of agglomerated cork obtained by the process indicated above.



  In a preferred implementation of the process that comprises. the invention, the die-cast roll is rectified and rolled and then re-covered by means of at least one layer of a varnish containing vegetable oil, gasoline of turpentine, lithographic varnish, in such a way in waterproofing said roller.

   It is possible to use a mold in two semi-cylindrical parts in which two halves of the roll are molded, these two halves then being assembled on the axis of rotation of the roll. It is also possible to use a cylindrical mold so as to obtain a cylindrical roller, an axis being introduced by pressure into this roller.



  The roller obtained by means of the process according to the invention has the advantage of allowing perfect admission of the inks as well as their uniform distribution. The consistency of the agglomerated cork is such that it undergoes practically no deformation. A roller of agglomerated cork can therefore be used for a very long time compared to the rolls used heretofore and having surfaces of gelatin, leather or rubber.



  The described roller also has the advantage that it can be easily repaired in the event that its surface is damaged.

Claims

CLAIMS 1. A method of manufacturing a roll of agglomerated cork, in particular for typographical machines., Characterized in that the cork is sorted until a finely divided product is obtained, in that 'we add vegetable oil, Judean bitumen and lithographic varnish, which act as agglutinants, in that the whole is beaten to obtain a homogeneous paste, in that we:

has the dough thus obtained in a mold, in that it is placed inside the mold at high pressure for a determined time and in that it is unmolded after drying. II. Roll obtained by means of the process according to claim I. SUB-CLAIMS 1. Process according to claim I, characterized in that the roll is ground and rolled and covered with at least one layer of a varnish containing vegetable oil; turpentine and lithographic varnish, so as to imperil the said roller. 2.

Process according to Claim I, characterized in that a mold in two semi-cylindrical parts is used in which two halves of the roll are molded, and in that these two halves are assembled on the axis of rotation of the roll . 3. Method according to claim I, characterized in that a cylindrical mold is used so as to obtain a cylindrical roller, and in that an axis is introduced by pressure in this roller.