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Machine translation
1. (WO1997003795) SCREEN FOR PRODUCING A PERFORATED FILM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1997/003795    International Application No.:    PCT/US1995/009365
Publication Date: 06.02.1997 International Filing Date: 24.07.1995
Chapter 2 Demand Filed:    13.12.1996    
IPC:
A61F 13/15 (2006.01), B26F 1/26 (2006.01), B29C 51/10 (2006.01)
Applicants: TREDEGAR INDUSTRIES, INC. [US/US]; 1100 Boulders Parkway, Richmond, VA 23225 (US)
Inventors: RIEKER, Gregory, M., Rieker; (US)
Agent: PORCELLO, James, F., Jr.; Emch, Schaffer, Schaub & Porcello Co., P.O. Box 916, Toledo, OH 43697 (US)
Priority Data:
Title (EN) SCREEN FOR PRODUCING A PERFORATED FILM
(FR) CRIBLE DE PRODUCTION D'UN FILM PERFORE
Abstract: front page image
(EN)The invention is directed to a cylindrical screen (14) for perforating a thermoplastic film (17) or sheets. The screen (14) is formed from a relatively thin sheet (31) that is secured together to form a cylindrical shape. A plurality of apertures (41) are positioned in the sheet (31) and the apertures (41) in the sheets (31) form a passageway (45) through the screen (14). The passageways are disposed at an angle from about 5° to about 60° with respect to a plane (47) that is disposed substantially perpendicular to the surface (39) of the screen (14).
(FR)L'invention porte sur un crible cylindrique (14) permettant de perforer un film thermoplastique (17) ou des feuilles thermoplastiques. Ce crible (14) est constitué d'une feuille relativement mince (31) assujettie sur elle-même pour donner une forme cylindrique. Plusieurs ouvertures (41) se trouvent dans la feuille (31) et y constituent un passage (45) traversant le crible (14). Ces passages se répartissent selon un angle compris entre environ 5 et environ 60° par rapport à un plan (47) sensiblement perpendiculaire à la surface (39) du crible (14).
Designated States: BR, CA, CN, HU, JP, KP, KR, MX, PL, SG.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: English (EN)
Filing Language: English (EN)