公开(公告)号：WO2014083535A2

公开(公告)日：2014-06-05

申请号：PCT/IB2013060490

申请日：2013-11-29

Applicant: PIRELLI

Inventor： AGRESTI SIMONE ,  CRISTOFANI FABRIZIO ,  PIERALLI ANDREA

IPC: D07B1/06

CPC classification number: D07B1/066 ,  D07B2201/2011 ,  D07B2201/2025 ,  D07B2201/2028 ,  D07B2201/2044 ,  D07B2205/305 ,  D07B2205/3089 ,  D07B2501/2046 ,  D07B2501/2076 ,  D07B2801/10 ,  D07B2801/14 ,  D07B2801/18

Abstract: A reinforcement cord (10), configured to be used for example in a tyre (100) for vehicle wheels, comprises at least two steel wires (1) having a carbon content lower than or equal to about 0.40 % and chrome content lower than or equal to about 2% by weight. Such steel wires (1) are twisted together with a winding pitch (P) greater than or equal to about 14 mm. The use of steel having low carbon content allows the costs to be advantageously kept down without negatively impacting on the rigidity of the reinforcement cord. The possibility of using winding pitches of at least about 14 mm makes it possible to increase both the rigidity of the reinforcement cord and the productivity in the winding step, with consequent further reduction of the production costs, and without there being problems of fraying.

Abstract translation: 构造成例如用于车轮的轮胎（100）中的增强帘线（10）包括至少两根钢丝（1），其碳含量低于或等于约0.40％，铬含量低于或等于约0.40％ 等于约2重量％。 这种钢丝（1）以大于或等于约14mm的卷绕间距（P）绞合在一起。 使用具有低碳含量的钢允许成本有利地保持下降而不会不利地影响加强帘线的刚度。 使用至少约14mm的卷绕间距的可能性使得可以增加增强帘线的刚度和卷绕步骤中的生产率，从而进一步降低生产成本，并且不存在磨损问题。

公开(公告)号：BRPI0621667B1

公开(公告)日：2016-11-29

申请号：BRPI0621667

申请日：2006-05-10

Applicant: BEKAERT SA NV ,  PIRELLI

Inventor： CRISTOFANI FABRIZIO ,  CIRILLI LUCA

IPC: D07B1/06 ,  D07B7/02

Abstract: cordonel de metal, processo para fabricar um arame de metal, e, aparelho para fabricar um cordonel de metal. e descrito um cordonel de metal que compreende pelo menos um arame de metal elementar pré-formado, o dito cordonel de metal tendo: um alongamento na ruptura, medido no cordonel descoberto, maior ou igual a 3 %, preferivelmente de 4 % a 6 %; um alongamento na ruptura, medido no cordonel emborrachado ou vulcanizado, que difere em uma quantidade não superior ou igual a 15 %, preferivelmente de 2 % a 10 %, em relação ao alongamento na ruptura medido no cordonel descoberto; um alongamento com carga parcial (ple), medido no cordonel descoberto, maior ou igual a 0,4 %, preferivelmente de 0,5 % a 1,5 %, um alongamento com carga parcial (ple), medido no cordonel emborrachado e vulcanizado, que difere em uma quantidade não maior ou igual a 15 %, preferivelmente de 0,5 % a 10 %, em relação ao alongamento com carga parcial (ple) medido no cordonel descoberto.

公开(公告)号：BRPI0822531A2

公开(公告)日：2015-06-23

申请号：BRPI0822531

申请日：2008-04-21

Applicant: PIRELLI

Inventor： DAGHINI GUIDO LUIGI ,  CEREDA GIUSEPPE ,  CRISTOFANI FABRIZIO ,  FANFANI SIMONE

IPC: D07B1/06 ,  B60C9/00

公开(公告)号：BRPI0621667A2

公开(公告)日：2012-07-10

申请号：BRPI0621667

申请日：2006-05-10

Applicant: PIRELLI

Inventor： CRISTOFANI FABRIZIO ,  CIRILLI LUCA

IPC: D07B1/06 ,  D07B7/02

Abstract: A metal cord includes at least one preformed elementary metal wire. The metal cord has an elongation at break, measured on the bare cord, higher than or equal to 3%, preferably 4% to 6%; an elongation at break, measured on the rubberized and vulcanized cord, which differs in an amount not higher than or equal to 15%, preferably 2% to 10% with respect to the elongation at break measured on the bare cord; a part load elongation, measured on the bare cord, higher than or equal to 0.4%, preferably 0.5% to 1.5%; a part load elongation, measured on the rubberized and vulcanized cord, which differs in an amount not higher than or equal to 15%, preferably 0.5% to 10%, with respect to the part load elongation measured on the bare cord.