Method for production of corrugated board and product...

Details Method for production of corrugated board and product... Method for production of corrugated board and product...

B - Operations, Transporting

31

F

B31F 1/20 (2006.01) B32B 3/28 (2006.01) C09J 103/02 (2006.01)

Patent

CA 2446773

The invention concerns a process for producing corrugated board, wherein a biopolymer latex adhesive is used as the corrugating adhesive. The biopolymer latex adhesive can be obtained by extruding a plasticized biopolymer, especially starch, in the presence of a crosslinking agent such as glyoxal. The preparation of the latex adhesive and its application in corrugating operation do not require a gelatinization step, nor the use of caustic soda or borax.

L'invention concerne un procédé de production de carton ondulé, dans lequel un adhésif en latex biopolymère est utilisé en tant que colle pour la production de carton ondulé. Cet adhésif en latex biopolymère peut être obtenu par extrusion d'un biopolymère plastifié, en particulier l'amidon, en présence d'un agent de réticulation tel que le glyoxal. La préparation de l'adhésif en latex et son application dans une opération de formage d'ondulations ne nécessitent pas d'étape de gélatinisation, ni d'utilisation de soude caustique ou de borax.

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