B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 37/10 (2006.01) D21H 27/30 (2006.01) B32B 27/10 (2006.01) D21F 3/00 (2006.01) D21H 27/18 (2006.01)
Patent
CA 2717846
A lamination station for laminating a film (120) to a web of paperboard (110) includes a nip roller (150) and a cooling roller (160). Between the rollers (150, 160) there is formed a nip which presses together the film (120) and the web of paperboard (110) with an interjacent molten polymer layer (130) or adhesive layer disposed between the film (120) and the web of paperboard (110). The film, the paperboard and the molten polymer lie, after the nip, in abutment against the cooling roller for a certain angle interval. According to the invention, the nip roller (150) is a shoe-press type roller, either comprising a pressure bar having several hydraulically operated pressure elements, or comprising one or several rigid pressure bars.
La présente invention se rapporte à un poste de stratification servant à stratifier un film (120) sur une bande de papier cartonné (110) comprenant un rouleau pinceur (150) et un rouleau de refroidissement (160). Entre les rouleaux (150, 160) est formée une ligne de contact qui presse ensemble le film (120) et la bande de papier cartonné (110) avec une couche polymère en fusion intercalée (130) ou une couche adhésive placée entre le film (120) et la bande de papier cartonné (110). Le film, le papier cartonné et le polymère en fusion se trouvent, après le pincement, en butée contre le rouleau de refroidissement pour un certain intervalle dangle. Selon linvention, le rouleau pinceur (150) est un rouleau de type presse à sabot, comprenant soit une barre de pression comportant plusieurs éléments de pression hydrauliques, soit une ou plusieurs barres de pression rigides.
Jonasson Katarina
Persson Ake
Marks & Clerk
Tetra Laval Holdings & Finance S.a.
LandOfFree
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