Thermoplastic elastomer nonwoven fabric roll, and method and device for producing the same
CA 2399142 A1 · Owner: Kanebo Limited · Inventors: Yamakawa, Yukio; Furuya, Tadashi; Tanaka, Yutaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing a thermoplastic elastomer nonwoven fabric roll which , comprises the steps of forming a nonwoven fabric (131) in sheet form by stacking melt-spun thermoplastic elastomer filaments on a belt conveyor (115) stripping the nonwoven fabric (131) by guiding it to a rotational roller (2) disposed above the transfer region of the belt conveyor (115) and winding it , around a paper tube (132) thus forming a nonwoven fabric roll (130). Since the tension acting on the nonwoven fabric (131) substantially directly acts as the stripping force, the nonwoven fabric (131) can be stripped by only applying a necessary minimum tension thereto. As a result it is possible to , produce …
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
- Filed March 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 2023.
- 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.