Producing apparatus of film with through-holes

Details Producing apparatus of film with through-holes Producing apparatus of film with through-holes

B - Operations, Transporting

29

D

B29D 7/01 (2006.01) B26F 1/08 (2006.01) B26F 1/24 (2006.01) B29C 55/18 (2006.01) B29C 69/00 (2006.01)

Patent

CA 2249504

A producing apparatus of a film with through-holes includes a pair of stretching rollers which sandwich a film therebetween and stretch the film. The producing apparatus further includes a pair of punching rollers which sandwich the film therebetween and punch through-holes in the film. At least one of the punching rollers has projections formed on an outer surface thereof. The stretching rollers and the punching rollers are disposed so that the film stretched by the stretching rollers are fed to the punching rollers.

Un appareil de production d'une pellicule avec des trous traversants comprend une paire de rouleaux tendeurs qui prennent en sandwich la pellicule pour l'étirer. L'appareil de production comprend en outre une paire de rouleaux perforateurs qui prennent en sandwich la pellicule pour y percer des trous traversants. Au moins un des rouleaux perforateurs a des saillies formées sur sa surface extérieure. Les rouleaux tendeurs et les rouleaux perforateurs sont placés de façon que la feuille tendue par les rouleaux tendeurs soit amenée aux rouleaux perforateurs.

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