Method for producing a film web

Details Method for producing a film web Method for producing a film web

A - Human Necessities

61

F

A61F 13/15 (2006.01) A61L 15/22 (2006.01) B29C 47/88 (2006.01) B29C 55/00 (2006.01) B29C 59/04 (2006.01)

Patent

CA 2588838

The invention relates to a method for producing a film web during which an initial film web made of thermoplastic polymer material with a polyethylene matrix, in which 1 to 70 parts by weight of polypropylene, with regard to 100 parts by weight of polyethylene matrix, are contained, is, after being heated, guided through a cooled roll gap (7, 8), whereby the initial film web is heated only until the polymer matrix material melts but not to a temperature at which the polypropylene melts.

Procédé de fabrication d'une bande de film selon lequel une bande de film de départ en matière polymère thermoplastique sous forme de matrice de polyéthylène contenant 1 à 70 parties en poids de polypropylène, par rapport à 100 parties en poids de la matrice de polyéthylène, est introduite, après avoir été chauffée, dans un espace refroidi (7, 8) entre des cylindres, la bande de film de départ étant chauffée jusqu'à l'état liquide fondu de la matière de la matrice polymère, mais pas jusqu'à l'état liquide fondu du polypropylène.

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