Snap zipper, bag with snap zipper, manufacture method and apparatus for bag with snap zipper, and bagging method and apparatus for bag with snap zipper
CA 1338256 C · Owner: Matsui, Kazufumi · Inventors: Hayashi, Kaoru; Matsui, Kazufumi; Kanemitsu, Toshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a snap zipper a bag, with a snap zipper, manufacture method and apparatus for a bag with a snap zipper, and bagging method and apparatus for a bag with a snap zipper. A hot-welded portion of the snap zipper comprising a male member and a female member is formed of ionomer resin or random copolymer resin of ethylene - acrylic acid. At least one tape with a pair of snap zipper half-members and a base film are supplied and passed through guide rollers for being placed one above the other, followed by hot-welding the tapes with snap zipper half-members and the base film to each other to form a film with a snap zipper. The film with a snap zipper is guided by a guide …
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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 23, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2013.
- 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.