US 12,337,628 B2
Method for the treatment of cords for the reinforcing layers of pneumatic tires
Cristiano Pomposini, Rome (IT); and Giacomo Andreini, Rome (IT)
Assigned to Bridgestone Europe NV/SA, Zaventem (BE)
Appl. No. 17/780,661
Filed by Bridgestone Europe NV/SA [BE/BE], Zaventem (BE)
PCT Filed Nov. 27, 2020, PCT No. PCT/IB2020/061235
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/105952, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 102019000022524 (IT), filed on Nov. 29, 2019.
Prior Publication US 2023/0009169 A1, Jan. 12, 2023
Int. Cl. B60C 9/00 (2006.01); B29B 15/12 (2006.01); B29D 30/38 (2006.01); B60C 9/20 (2006.01); D06M 15/693 (2006.01); D06M 15/70 (2006.01); D06M 101/32 (2006.01)
CPC B60C 9/0042 (2013.01) [B29B 15/125 (2013.01); B29D 30/38 (2013.01); B60C 9/0064 (2013.01); B60C 9/2009 (2013.01); D06M 15/693 (2013.01); D06M 15/70 (2013.01); B29D 2030/383 (2013.01); B60C 2009/0092 (2013.01); B60C 2009/2077 (2013.01); B60C 2009/2096 (2013.01); D06M 2101/32 (2013.01)] 7 Claims
 
1. A method for treatment of single filament cords for reinforcing layers of a pneumatic tire, said method comprising:
an adhesive solution coating step, wherein a single-ply cord comprising a single filament is immersed in an adhesive solution;
a drying step, wherein the single-ply cord covered in adhesive resin is held in a drying oven at a temperature of between 12° and 180° C.; and
a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 23° and 260° C. for a period of between 30 and 90 seconds,
wherein during said thermobonding step a tensile load of between 8 and 12 mN/dtex is applied to the single filament of the single-ply cord.