B - Operations – Transporting – 31 – F
Patent
B - Operations, Transporting
31
F
B31F 1/00 (2006.01) B31F 7/00 (2006.01)
Patent
CA 2478818
The invention relates to a method and equipment for moulding an article (1) produced from paperboard or cardboard. Moulding is carried out by means of a moulding tool (2) that mechanically works the board; and to improve its mouldability, momentary irradiation (9) on the microwave frequency is exerted on the board, according to the invention. The invention can be applied to the manufacture of packages and disposable containers made of paperboard or cardboard; for example, to the forming of a rolled-up or folded rim around a drinking cup (1), a mug or a container, the forming of a stiffening crease or projection on a paperboard container, or to the press moulding of paperboard containers or plates.
L'invention concerne un procédé et un matériel servant au moulage d'un article (1) fabriqué à partir de carton ou de carton blanchi. Le moulage est effectué au moyen d'un outil de moulage (2) travaillant mécaniquement le carton et, en vue d'améliorer sa moulabilité, une irradiation momentanée (9) de la fréquence micro-ondes est exercée sur le carton, conformément à l'invention. L'invention peut être appliquée à la fabrication d'emballages et de conteneurs jetables en carton ou en carton blanchi, par exemple, pour le formage d'un bord enroulé ou replié autour d'un gobelet à boire (1), d'une tasse ou d'un conteneur, pour le formage d'un pli ou d'une saillie de raidissement sur un conteneur en carton, ou pour la moulage sous pression de conteneurs ou de panneaux en carton.
Karine Seppo
Raesaenen Jari
Shapiro Cohen
Stora Enso Oyj
LandOfFree
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