Patent Number: 6,296,469

Title: Producing apparatus of film with through-holes

Abstract: 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.

Inventors: Suzuki; Minoru (Tochigi-ken, JP)

Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha

International Classification: B29C 55/18 (20060101); B26F 1/02 (20060101); B26F 1/08 (20060101); B26F 1/24 (20060101); B26F 1/00 (20060101); B26D 001/40 (); B26D 007/10 (); B26F 001/00 (); B26F 001/24 (); B26F 001/38 ()

Expiration Date: 10/02/2018