Melt-spinning apparatus and method
CA 1328964 C · Owner: Bacchini, Alberto · Inventors: Bacchini, Alberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
INVENTOR: Paolo BERT, INVENTION: MELT-SPINNING APPARATUS AND METHOD ABSTRACT, A melt-spinning apparatus comprises means for feeding a molten polymer composition from at least one extruder to a multiplicity of spinning orifices provided by a plurality of spinnerets for producing a multiplicity of discrete continuous extrudates emerging from the orifices in a generally downward direction; quenching means for cooling the extrudates and for solidifying them to form a multiplicity of discrete continuous filaments; take-up and stretching means provided downstream from the orifices for contacting and stretching the filaments; the quenching means include means for directing at least one stream of a …
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 May 3, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2011.
- 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.