Patent ID: 11890772
Assignee: ITALIA TECHNOLOGY ALLIANCE S.R.L.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 3:
4. The machine of claim 1, further comprising a programmable processing unit configured to calculate the Poisson's ratio based on the following formula:

CP=((L2b−L2a)/L2a)/((V1b−V1a)/V1a), where:
L2a is the first width of the web material detected by the first device for acquiring information on the first width of the web material,
L2b is the second width of the web material detected by the second device for acquiring information on the second width of the web material,
V1a is the first feeding speed of the web material in the first position,
V1b is the second feeding speed of the web material in the second position.