公开(公告)号：EP2507146B1

公开(公告)日：2014-07-02

申请号：EP10805796.9

申请日：2010-12-02

申请人： Centre National de la Recherche Scientifique (CNRS) ,  Universidad De Chile ,  Universidad De Santiago De Chile

发明人： CERDA VILLABLANCA, Enrique ,  HAMM HAHN, Eugenio ,  ROMERO GRAMEGNA, Victor ,  ROMAN, Benoît

IPC分类号： B65D75/58

CPC分类号： B65D75/5833 ,  Y10T428/15

公开(公告)号：EP2507146A1

公开(公告)日：2012-10-10

申请号：EP10805796.9

申请日：2010-12-02

申请人： Centre National de la Recherche Scientifique (C.N.R.S.) ,  Universidad De Chile ,  Universidad De Santiago De Chile

发明人： CERDA VILLABLANCA, Enrique ,  HAMM HAHN, Eugenio ,  ROMERO GRAMEGNA, Victor ,  ROMAN, Benoît

IPC分类号： B65D75/58

CPC分类号： B65D75/5833 ,  Y10T428/15

摘要： A thin packaging film 1 comprises a reference area 2 that has a closed contour and is surrounded by a tear-off area on the entire reference area periphery. An incipient tear 3 is precut into said film so as to block off said contour while leading into the latter, thus forming a gripping portion 4 that is capable of being pulled away from the plane of said thin film, the reference area being designed such as to trap one end of said incipient tear within said contour while the other end spreads, by tearing in a spiraling manner, from the tear-off area over at least 180º around said reference area when the gripping portion begins to undergo pulling. Said closed contour is preferably circular. The area having a closed contour may be, in particular, an opening or a film portion surrounded by a reinforcement material loop.