Method and apparatus for line-stretching an elastomer film
CA 1299331 C · Owner: Kimberly-Clark Corporation · Inventors: Pomplun, William S.; Sallee, Lorry F.; Wittrock, Marvin E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an improved method and apparatus for uniaxially orienting an elastomer. A supplying mechanism provides a strip of elastomer material which is capable of being deformed from an initial length to a retained, activatable elongated length. A restricting mechanism limits a movement of the elastomer material from the supplying mechanism, and a traction mechanism applies a selected amount of uniaxial tension to an intermediate portion of the elastomer material, which is located between the restricting mechanism and the traction mechanism. The traction mechanism is spaced from the the restricting means by a selected distance, is constructed to receive the elastomer …
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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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
- 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
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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.