A TEARABLE CORE, A ROLL COMPRINSING SUCH A CORE AND A TEARABLE CORE MANUFACTURING METHOD.

摘要

A tearable core (3), adapted for winding a sheet product (2), comprises a cylindrical body wall (31 ) defining a longitudinal hole (35) of longitudinal axis XX'. The cylindrical body wall (31 ) is tearable from an edge (51 ), and comprises an outer strip (33) and an inner strip (34) that are helically wound on one another and displacedly overlapped in a lateral direction parallel to the longitudinal axis XX', and secured together through their mutually facing surfaces by a first region of attachment (36). The strips (33, 34) are made of the material having characteristics such that the inner strip (34) is made of a cardboard having a water drop less than the water drop of the outer strip (33) or the outer strip (33) is made of cardboard having a water drop less than the water drop of the inner strip (34). The cylindrical body wall (31 ) is formed by securing together the outer strip (33), a first end part (38) of the outer strip (33) of one turn (A) being superposed and secured to a second end part (42A) of the outer strip (33) of an adjacent turn (B) through their mutually facing surfaces by means of a second region of attachment (37).