Polyolefin resin foamed laminated sheet and double-side vacuum forming of the same
CA 1293913 C · Owner: Kajimoto, Yoshinori · Inventors: Kajimoto, Yoshinori; Tsubone, Masahiro; Yoshimi, Toru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foamed laminate sheet suitable for thermoforming and a double-side vacuum forming process using the same are disclosed, said foamed laminate sheet being composed of a foamed interlayer comprising a polyolefin resin as a main resinous component and from 0.5 to 35 parts by weight of an inorganic filler per 100 parts by weight of the polyolefin resin, said foamed interlayer having a density of from 0.18 to 0.98 g/cm3 and a, polyolefin film laminated on both sides of said foamed interlayer. The foamed laminate sheet exhibits excellent formability, and formings obtained therefrom have excellent heat resistance, oil resistance heat insulat-, ing properties, and strength withoutstanding use in …
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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 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
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.