公开(公告)号：EP3147113A4

公开(公告)日：2018-02-28

申请号：EP15796291

申请日：2015-05-21

申请人： BORRACHAS VIPAL S A

发明人： ROQUE FERRETO MAURI ,  RODRIGUES VFEIRA ELENO ,  BORGES VIEIRA ISMAEL ,  GUEDES LEANDRO GUSTAVO ,  RAMPON PAULO

IPC分类号： B29D30/54 ,  B29C35/18 ,  B29C73/00

CPC分类号： B29D30/542 ,  B29D30/0654 ,  B29D30/54 ,  B29D2030/0659

摘要： The present utility model proposes a configuration applied to envelope for tire retreading in a cold retreading process. Two part envelopes are known in the prior art. However, known forms of sealing between the pieces are unsatisfactory, either because problems arise in connection with the seal or because they reduce the service life of the envelope. With the intention of overcoming these limitations, the present utility model proposes an envelope (20) comprising three parts (22, 24, 26), wherein one flap (224) of the first part (22) has a free end with a different cross section (224b), wherein a flap (244) of the second part (24) has a free end with a different cross section (244b), and wherein the third part (26) has an elastic ring form of sufficient width to cover the different cross section (224b) of the flap (224) of the first part (22) and the different cross section (244b) of the flap (244) of the second part (24).