发明名称 Coreless Roll of Web Material, Machine and Method for its Production
摘要 A method is described for obtaining a coreless roll (R) of web material with a first portion of web material forming an inner nucleus (R1) of said roll and a second portion of web material (R2) wound around the outside of said nucleus. The two portions (R1, R2) can be separated from one another and, for said purpose, an interface or discontinuity is created in at least one turn of the web material forming the roll, between said inner nucleus and said second portion of web material, so as to facilitate the extraction of the inner nucleus from the outer portion of the roll.
申请公布号 US2009101748(A1) 申请公布日期 2009.04.23
申请号 US20060919666 申请日期 2006.04.27
申请人 FABIO PERINI S.P.A. 发明人 MADDALENI ROMANO;GELLI MAURO
分类号 B65H18/26;B65H35/04 主分类号 B65H18/26
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