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1. EP0812671 - DEVICE FOR TRANSVERSELY EXTENDING A BELT-LIKE BODY

Office
European Patent Office
Application Number 95942320
Application Date 28.12.1995
Publication Number 0812671
Publication Date 17.12.1997
Publication Kind A4
IPC
B29C 55/08
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
04uniaxial, e.g. oblique
08transverse to the direction of feed
B29L 7/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
7Flat articles, e.g. films or sheets
B29L 28/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
28Nets or the like
D02J 1/22
DTEXTILES; PAPER
02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
JFINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES, OR THE LIKE
1Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
22Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
CPC
B29C 55/08
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
04uniaxial, e.g. oblique
08transverse to the direction of feed
Applicants NIPPON PETROCHEMICALS CO LTD
POLYMER PROCESSING RES INST
Inventors AIHARA KINTARO
KURIHARA KAZUHIKO
YAZAWA HIROSHI
Designated States
Priority Data 1994150884 01.07.1994 JP
9502772 28.12.1995 JP
Title
(DE) VORRICHTUNG ZUM QUERVERLANGEN VON BÄNDERÄHNLICHEN GEGENSTANDEN
(EN) DEVICE FOR TRANSVERSELY EXTENDING A BELT-LIKE BODY
(FR) DISPOSITIF SERVANT A ETENDRE TRANSVERSALEMENT UN CORPS EN FORME DE BANDE
Abstract
(EN) A device for transversely stretching a web includes a pair of pulleys arranged in the substantially same plane and rotating in the opposite directions to each other and a pair of belts running around the pulleys, respectively. The web is widthwise stretched, by gripping opposite side edges thereof by the pulleys and the belts and conveying the web in a divergent manner. At least one pair of pressing rolls are provided at an inclination relative to the belts for pressing the opposite side edges of the web onto the belts prior to being gripped between the pulleys and the belts. According to this structure, a device for transversely stretching a web is realized which is capable of effectively preventing the web from being dropped from the grip.
(FR) L'invention concerne un dispositif d'extension transversale, comprenant une paire de poulies placées sensiblement dans le même plan et conçues pour tourner dans des sens opposés, ainsi que deux courroies placées chacune sur une de ces poulies. Un corps en form de bande est étendu transversalement par le fait qu'il est transféré de façon qu'il s'étende sous une forme évasée tout en étant maintenu, sur ses bords latéraux, par lesdites poulies et lesdites courroies. Au moins une paire de rouleaux d'appui sont montés inclinés contre les courroies, cela pour appliquer chacun des bords latéraux du corps en forme de bande sur sa courroie respective, cela avant qu'il soit maintenu entre sa poulie et sa courroie respectives. Grâce à cet agencement, on obtient un dispositif d'extension transversale qui empêche efficacement la sortie du corps en forme de bande.
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