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US 11,535,410 B2Granted
Device for feeding film for packaging products
AssigneeTMC Corporation
InventorsAndrea Calamosca, William Rossi
Life of this patent
Estimating the term…
Abstract
Described is an apparatus for packaging tissue products and a relative packaging method.
Claims13
An apparatus for automatically packaging at least one article made of a plastic film, comprising:
- a weakening system for automatically performing a step of weakening a part of said film, to obtain a weakness on said part;
- a drawing system for automatically performing a step of drawing at least said part along an operating path and, during said drawing step, a step of separating said part from the remaining part of the film, such that said part, once separated, corresponds to a piece of the film;
- a wrapping system for automatically performing a step of wrapping said article in said piece;
- wherein said drawing system, in order to perform said drawing step, is configured to apply on said film at least a first drawing force along a first sector of said operating path and a second drawing force along a second sector of said operating path, said first sector and second sector defining between them a third intermediate sector which is interposed between said first sector and second sector, said first, second, and third intermediate sectors being positioned, along said operating path, downstream of said weakening system;
- wherein said drawing system is configured to perform said separating step, differentiating said first and second drawing forces from each other upon positioning of said weakness in said third intermediate sector;
- wherein said wrapping system is configured to perform said wrapping step by moving said article along an axis transversal to said operating path, such that said article intercepts transversely the piece along said axis;
- wherein the apparatus is configured to perform a preliminary step of adjusting a distance along the operating path between said third intermediate sector and said axis, to allow adjustment of the distance as a function of an input value correlated with an extension of the piece along the operating path, said extension of the piece being correlated to at least a first dimension of the article.
4 more elements
A method for automatically packaging articles made of a plastic film, comprising, for at least one article, an operating sequence comprising:
- a weakening step of weakening a part of said film, to obtain a weakness on said part;
- a drawing step of drawing at least said part along an operating path;
- during said drawing step, a separating step of separating said part from a remaining part of the film, such that said part, once separated, corresponds to a piece of the film, said separating step being performed after said weakening step;
- a wrapping step of wrapping said article in said piece;
- wherein said drawing step is performed by applying on said film at least a first drawing force along a first sector of said operating path and a second drawing force along a second sector of said operating path, said first sector and second sector defining an intermediate sector between said first sector and second sector;
- wherein said separating step is performed by differentiating said first and second drawing forces from each other upon positioning of said weakness in said intermediate sector;
- wherein said wrapping step is performed by moving said article along an axis transversal to said operating path, such that said article intercepts transversely the piece along said axis;
- and
- a preliminary step of adjusting a distance along the operating path between said intermediate sector and said axis, such that said distance is adjusted as a function of an input value correlated with an extension of the piece along the operating path, said extension of the piece being correlated to at least a first dimension of the article.
6 more elements
Dependencies are inferred from the claim text.