Apparatus and methods for producing packets

B - Operations – Transporting – 65 – B

Patent

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B65B 9/20 (2006.01) B65B 39/00 (2006.01) B65B 51/30 (2006.01)

Patent

CA 2166727

Packets are produced by forming a continuous web (W) of packaging material into a tubular form around a tube (4) through which the packet filling material is delivered, the individual packets being sealed and severed from the web as each dose of filling material is delivered. A valve (24) to control the dosing is provided at the exit end of the delivery tube. The sealing and severing of the packets is performed by mutually transverse pairs of rotors (36, 38) the arms (92) of which interdigitate to make successive seals in mutually transverse directions, so forming tetrahedral packets.

Afin de produire des sachets, on utilise un tube (4) pour conférer une forme tubulaire à une bande continue (W) de produit d'ensachage, la matière devant remplir les sachets étant amenée par l'intérieur dudit tube, et chaque sachet étant scellé et séparé de la bande une fois qu'il contient la dose de matière de remplissage. Une vanne de dosage (24) est prévue à l'extrémité de sortie du tube d'amenée. Le scellement et le sectionnement des sachets sont effectués par des paires de rotors (36, 38) s'étendant dans des sens transversaux l'un par rapport à l'autre et possédant des bras interpénétrés (92) formant une succession de scellements dans des sens transversaux les uns aux autres de manière à former des sachets tétraédriques.

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