TERMIUM Plus®

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Consult the Government of Canada’s terminology data bank.

CROSS-DIRECTION [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1994-07-13

English

Subject field(s)
  • Properties of Paper
CONT

The principle of web formation on a cylinder former is virtually identical to that of a gravity decker.... A horizontal cylinder with a wire or plastic cloth surface rotates in a vat of dilute paper stock. Water associated with the stock drains through the mold and a layer of fibers is deposited on the cloth.... Because the mold rotates opposite to the direction of stock flow, a portion of deposited stock is continuously washed off the mold, resulting in flocced fiber bundles that contribute to "blotchy" formation. The sheet also has extreme directionality(fiber orientation) caused by the method of fiber deposition.(N. B. Directionality is usually measured by the ratio of tensile values obtained on machine-direction and cross-direction samples. Values of 5. 0 are typical for vat cylinder board, as compared to values below 2. 0 for fourdrinier papers.)

French

Domaine(s)
  • Propriétés des papiers
CONT

On estime qu'environ 80 % des formes rondes existantes sont du type à contre-courant, [...] Comme la forme tourne en sens inverse de l'écoulement de la pâte, une partie de la suspension déjà déposée est détachée de la forme par chasse d'eau; on retrouve dans la suspension de petits amas de fibres floculées qui contribuent à la formation d'un épair nuageux. Cette méthode de dépôt des fibres donne des feuilles extrêmement orientées. (Nota : On mesure, d'ordinaire, l'orientation des papiers par le rapport des longueurs de rupture dans le sens marche et le sens travers. Pour les machines à forme ronde, on obtient des valeurs supérieures à 5,0, alors qu'elles sont inférieures à 2,0 sur les machines à table plate.)

Spanish

Save record 1

Record 2 1993-12-23

English

Subject field(s)
  • Paper Manufacturing Processes
CONT

The wet web is held tightly against the cylinders by a synthetic, permeable fabric called a dryer felt. The fabric also serves to support and guide the sheet through the dryer section.(In some cases, it also aids in controlling cross-direction shrinkage and keeps the sheet flat, i. e., prevents sheet cockling.)

OBS

cockle: A paper defect appearing as a wrinkle caused by nonuniform shrinking due to uneven drying or sheet formation.

French

Domaine(s)
  • Fabrication du papier
OBS

de la feuille.

Spanish

Save record 2

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