B - Operations – Transporting – 31 – F
Patent
B - Operations, Transporting
31
F
93/1, 154/72.13
B31F 1/20 (2006.01) B31B 1/74 (2006.01) B31F 1/28 (2006.01) B65D 5/06 (2006.01)
Patent
CA 1171773
ABSTRACT OF THE DISCLOSURE The present invention provides a process of manufacturing a reinforced corrugated cardboard-type of packaging container, comprising the steps of providing a corrugated core liner and a pair of side liners, ad- hering one side surface of the corrugated core liner to one side liner with an aqueous adhesive solution, apply- ing an aqueous adhesive solution to the other side sur- face of the corrugated core liner, further applying a reinforcing agent to produce a reinforced region, adher- ing the other side liner to the other side of the cor- rugated core liner, heating the two side liners and the corrugated core liner, thereby adhering the side liners and the corrugated core liner together by gelatinizing the aqueous adhesive solutions to form a corrugated cardboard while the reinforcing agent remains unhardened, forming scored lines in said reinforced region before the hard- ening of the reinforcing agent is completed, and folding the corrugated cardboard in said reinforced region to form a packaging container.
387811
Kabushiki Kaisha Tomoku
Marks & Clerk
LandOfFree
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