There is described a cover element (1) for a book or notebook, wherein said cover element (1) comprises:- a main covering portion (2) provided with an internal side (3) and an external side (4); and- a plurality of constraining elements (5, 5') overlapped and coupled to said internal side (3) of said main covering portion (2).;The cover element (1) is characterised in that:- said main covering portion (2) is made of polyethene coated paper;- said constraining elements (5, 5') are made of a material which can be coupled to said polyethene coated paper; and- said cover element (1) is obtained by ultrasonic welding of said constraining elements (5, 5') to said main covering portion (2).
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