Winding machine with device for calculating the poisson's ratio and related method
AssigneeItalia Technology Alliance S.R.L.
InventorsGiuseppe Acciari, Fernando Barsacchi, Filippo Gelli
Life of this patent
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Abstract
The machine (1;100) comprises a winding station (3; 101), adapted to receive secondary winding cores (T) coaxial with, and adjacent to, one another. The machine further comprises a cutting device (11; 104) with a plurality of blades (13; 105), arranged upstream of the winding station (3; 101) with respect to the feeding direction of the web material (N) and adapted to slit the web material into a plurality of strips (S1-S5) of web material. An in-line measurement arrangement (81-87) is also provided for measuring the Poisson's ratio of the web material (N).
Claims9
A machine for winding a web material into a plurality of secondary reels, the machine comprising:
- a web material feeding path;
- a winding station, adapted to receive one or more secondary winding cores and to form secondary reels of web material therearound;
- and
- an in-line measurement arrangement for measuring the Poisson's ratio of the web material, wherein the in-line measurement arrangement for measuring the Poisson's ratio comprises in combination:
- a first measurement device adapted to measure a first feeding speed of the web material in a first position of the web material feeding path of the web material towards the winding station;
- a second measurement device adapted to measure a second feeding speed of the web material in a second position of the web material feeding path of the web material towards the winding station, downstream of the first position of the web material feeding path;
- a first device adapted to acquire information on a first width of the web material in the first position of the web material feeding path;
- and
- a second device adapted to acquire information on a second width of the web material in the second position of the web material feeding path.
A method for winding a web material, the method comprising the following steps:
- feeding a web material along a feeding path towards a winding station;
- winding the web material and forming, therewith, a plurality of secondary reels;
- detecting the Poisson's ratio of the web material during a forward movement thereof along said feeding path;
- measuring a first feeding speed of the web material in a first position of the feeding path of the web material towards the winding station;
- measuring a second feeding speed of the web material in a second position of the feeding path of the web material towards the winding station, downstream of the first position of the feeding path;
- acquiring information on a first width of the web material in the first position of the feeding path;
- acquiring information on a second width of the web material in the second position of the feeding path.
Dependencies are inferred from the claim text.