| 摘要 |
A longitudinal sleeve is produced from a sheet of plastic material, this being divided into at least two cavities by means of welds between two of the opposite parts, sealed at the bottom, filled by means of filling conduits, and closed, being separated after being sealed. The equipment has a forming and filling column, fed by means of a reel of plastic sheet with a number of tensors and correctors of the route taken by the plastic sheet. Said column is tubular at its beginning, becoming a twin tube in a second zone, also fitted with items for pulling, welding and cutting, as well as a filling hopper with multiple inlets. The bag thus obtained is formed of a laminar strip of plastic material with at least two cavities formed of the overlapping of said strip, a weld in the perimeter zone where the fold of said band is not made, and other central welds which divide this into at least two differentiated interior zones. Said bag is filled by the forming column itself. For application in the production and filling of bags with powdery, granular or pasty materials. |
