Closure system for pliable container and method and...

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 33/00 (2006.01) B31B 19/60 (2006.01) B31B 19/90 (2006.01) B65D 33/30 (2006.01)

Patent

CA 2293258

A closure system for use in repetitively opening and closing of a pliable container (2, 102, 152, 177, 202, 227, 252, 302, 419, 447) includes first and second shape memory elements (26, 27; 126, 127; 167, 168; 186-189; 190-193; 216, 217; 230-232; 261, 262; 312-317; 327, 328; 378, 384), each including an elongated, generally concave surface portion (38, 138, 220, 222) and an opposing, generally convex surface portion (39, 139, 221, 223) which are adapted to be attached to respective side walls (5, 6, 105, 106, 155, 156, 180, 181, 205, 206, 255, 256, 304, 305, 307-310) of the pliable container (2, 102, 152, 177, 202, 227, 252, 302, 419, 447) adjacent an openable end (12, 112, 159, 184, 212, 258, 421, 449) thereof. The first and second shape memory elements (26, 27; 126, 127; 167, 168; 186-189; 190-193; 216, 217; 230-232; 261, 262; 312-317; 327, 328; 378, 384) can either face each other to maintain the opposing side walls (5, 6, 105, 106, 155, 156, 180, 181, 205, 206, 255, 256, 304, 305, 307-310) in an open condition or assume a nested position to hold the openable end (12, 112, 159, 184, 212, 258, 421, 449) closed. A method and apparatus for producing pliable containers incorporating the closure system of the invention are also provided.

La présente invention concerne un système de fermeture permettant d'ouvrir et de fermer à plusieurs reprises un conteneur souple (2, 102, 152, 177, 202, 227, 252, 302, 419, 447), lequel système comprend un premier et un deuxième élément à mémoire de forme (26, 27; 126, 127; 167, 168; 186-189; 190-193; 216, 217; 230-232; 261, 262; 312-317; 327, 328; 378, 384) comprenant chacun une partie allongée présentant une surface généralement concave (38, 138, 220, 222) et une partie opposée de surface généralement convexe (39, 139, 221, 223) qui sont aptes à être attachées aux parois latérales respectives (5, 6, 105, 106, 155, 156, 180, 181, 205, 206, 255, 256, 304, 305, 307-310) du conteneur souple (2, 102, 152, 177, 202, 227, 252, 302, 419, 447), adjacentes à une extrémité ouvrable (12, 112, 159, 184, 212, 258, 421, 449) de celui-ci. Le premier et le deuxième élément à mémoire de forme (26, 27; 126, 127; 167, 168; 186-189; 190-193; 216, 217; 230-232; 261, 262; 312-317; 327, 328; 378, 384) peuvent soit se trouver l'un en face de l'autre de manière qu'ils maintiennent les parois latérales opposées (5, 6, 105, 106, 155, 156, 180, 181, 205, 206, 255, 256, 304, 305, 307-310) en position ouverte, soit s'imbriquer l'un dans l'autre de manière qu'ils maintiennent l'extrémité ouvrable (12, 112, 159, 184, 212, 258, 421, 449) fermée. L'invention se rapporte également à un procédé et à un appareil permettant de produire des conteneurs souples munis dudit système de fermeture.

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