Apparatus and process for forming a laid fibrous web
CA 1290126 C · Owner: Kimberly-Clark Corporation · Inventors: Wehman, Timothy L.; Enloe, Kenneth M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and process for forming a laid fibrous article includes a foraminous forming surface for depositing thereon of fibers under the influence of a pressure differential imposed on the surface wherein the, improvement comprises the provision of a concavely contoured portion of the forming surface to yield a non-stepwise gradation in basis weight of the laid fibrous article. The concavely contoured surface portion is bounded by walls defining angles of from about 45° to 68° whereby the laid fibrous article is readily removable from the forming surface, which may comprise the cylindrical surface of a rotating drum.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.