CH258323A - Process for manufacturing an agglomerated cork roll, in particular for letterpress machines, and roll obtained by this process. - Google Patents
Process for manufacturing an agglomerated cork roll, in particular for letterpress machines, and roll obtained by this process.Info
- Publication number
- CH258323A CH258323A CH258323DA CH258323A CH 258323 A CH258323 A CH 258323A CH 258323D A CH258323D A CH 258323DA CH 258323 A CH258323 A CH 258323A
- Authority
- CH
- Switzerland
- Prior art keywords
- roll
- mold
- roller
- manufacturing
- process according
- Prior art date
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N7/00—Shells for rollers of printing machines
- B41N7/06—Shells for rollers of printing machines for inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/02—Top layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
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 (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES258323X | 1946-01-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH258323A true CH258323A (en) | 1948-11-30 |
Family
ID=8244849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH258323D CH258323A (en) | 1946-01-15 | 1947-01-15 | Process for manufacturing an agglomerated cork roll, in particular for letterpress machines, and roll obtained by this process. |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE482408A (en) |
CH (1) | CH258323A (en) |
-
0
- BE BE482408D patent/BE482408A/xx unknown
-
1947
- 1947-01-15 CH CH258323D patent/CH258323A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE482408A (en) |
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