Adhesive for a multi-ply sheet and a method for manufacturing the multi-ply sheet using the same
CA 2277569 A1 · Owner: Shin, Jong Ho · Inventors: Ow, Say Kyoun; Ryu, Jeong Yong; Shin, Jong Ho
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an adhesive for a multi-ply sheet and a method for manufacturing the multi-ply sheet using the same and more particularly, to an adhesive comprising starch clay, silica sol and water and , a, method for manufacturing the multi-ply sheet where the adhesive is employed into the interlayer of multi-ply sheet. This invention enhances the internal bonding strength, compressed strength and bursting strength of the multi-ply sheet, compared with the conventional method that an unpasted native starch is solely sprayed.
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 July 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2021.
- 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.