B - Operations – Transporting – 31 – F
Patent
B - Operations, Transporting
31
F
B31F 1/12 (2006.01) A61F 13/15 (2006.01) B26F 1/24 (2006.01)
Patent
CA 2220651
The present invention is directed to a process and apparatus for aperturing, creping and optionally laminating webs (14, 18) such as, for example, films and fibrous nonwovens. The present invention is also directed to the resultant materials. The process for aperturing and creping webs utilizes a pattern roll (22) and an anvil roll (24) with the anvil roll being rotated faster than the pattern roll. The resultant material is visually much different than conventional materials which are typically run through similar rolls wherein the pattern rool and anvil roll are run at the same speed or wherein the pattern roll is run faster than the anvil roll. The resultant materials have a wide variety of applications not the least of which includes a liner material for personal care absorbent articles such as diapers, training pants, feminine hygiene products, bandages and the like.
L'invention concerne un procédé et un dispositif servant à ajourer, à crêper et, éventuellement, à stratifier des bandes (14, 18), telles que, par exemple, des tissus minces et des non-tissés fibreux. Elle concerne également les matériaux obtenus. Le procédé servant à ajourer et à crêper des bandes consiste à utiliser un rouleau à motifs (22) et un rouleau matrice (24) tournant plus rapidement que le rouleau à motifs. Le matériau obtenu présente un aspect très différent de celui des matériaux classiques qu'on passe à travers des rouleaux similaires, le rouleau à motifs et le rouleau matrice se déplaçant à la même vitesse ou le rouleau à motifs se déplaçant plus vite que le rouleau matrice. Les matériaux obtenus peuvent être utilisés dans une variété importante de mises en application et, particulièrement, en tant que matériau de doublure pour des articles absorbants, tels que des couches, des barboteuses, des produits d'hygiène féminine ou des pansements.
Decorso Benjamin John
Georger William Anthony
Majors Mark Bruce
Schmidt Richard John
Welch Howard Martin
Borden Ladner Gervais Llp
Kimberly-Clark Worldwide Inc.
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