B - Operations – Transporting – 31 – F
Patent
B - Operations, Transporting
31
F
B31F 1/07 (2006.01)
Patent
CA 2729030
The device for satinizing and embossing packaging foils comprises at least two embossing rollers that are each pro-vided with a toothing consisting of individual teeth, the pyramidal teeth having an essentially rectangular horizontal projection, and the sides of the teeth being essentially parallel and perpendicular, respectively, to the longitudinal axis of the embossing roller. In contrast to the prior art, the opening angle (.alpha.) between the radially aligned adjacent tooth flanks (31FR, 32FR) is smaller than the opening angle (.beta.) between the axially aligned adjacent tooth flanks (32FA, 33FA), and the tooth height (X) in the radial direction, measured from the tooth tip (ZS) to the tooth bottom (ZG1), is greater than the tooth height (Y) in the axial direction measured from the tooth tip (ZS) to the tooth bottom (ZG2). This dimensioning and arrangement of the teeth provides an im-proved gearing with a reduced specific pressure as well as an improved processing of the paper part of the foil that results in its better folding, curling, and tubing behavior.
Le dispositif de satinage et de gaufrage de feuilles demballage comprend au moins deux rouleaux de gaufrage qui sont chacun pourvus dune denture constituée de dents individuelles, les dents pyramidales ayant une saillie horizontale essentiellement rectangulaire, et les côtés des dents étant respectivement essentiellement parallèles et perpendiculaires à laxe longitudinal du rouleau de gaufrage. Contrairement à létat de la technique, langle douverture (a) entre les flancs de dent adjacents radialement alignés (31FR, 32FR) est inférieur à langle douverture (ß) entre les flancs de dent adjacents axialement alignés (32FA, 33FA), et la hauteur de dent (X) dans la direction radiale, mesurée depuis la pointe de dent (ZS) jusquà la base de dent (ZG1), est supérieure à la hauteur de dent (Y) dans la direction axiale mesurée depuis la pointe de dent (ZS) jusquà la base de dent (ZG2). Ce dimensionnement et cette disposition des dents permettent un meilleur engrenage à une pression spécifique réduite ainsi quun meilleur traitement de la partie papier de la feuille, ce qui permet dobtenir un meilleur comportement au pliage, au gondolement et au tubage.
Boegli-Gravures S.a.
Fetherstonhaugh & Co.
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