Patent ID: 11951707
Assignee: I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.P.A.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 14:
15. Method to produce a tubular product starting from one or more strip-shaped elements, comprising:
feeding one or more strip-shaped elements, in a shaping direction onto a shaping member which has a longitudinal axis,
winding said one or more strip-shaped elements around said shaping member by rotating winding means wound on said shaping member to apply a determinate first traction force which generates a first component suitable to wind said one or more strip-shaped elements, and a second component which tends to flex said shaping member, characterized in that it also comprises
supporting, during the winding of the one or more strip-shaped elements, said shaping member by means of second support means configured as a support belt disposed in a closed loop, made of flexible material, partly wound on the shaping member to at least partly contrast said second component of said first traction force, said support belt applying an additional force on said shaping member in contrast to said second component of said first traction force, without drawing said one or more strip-shaped elements, so as to keep said shaping member substantially coaxial to said longitudinal axis and at the same time letting said one or more strip-shaped elements slide on said support belt.