US 11,911,985 B2
Application system and method for applying a sealing agent to the inner surface of a pneumatic tire
Roberto Pontone, Rome (IT)
Assigned to Bridgestone Europe NV/SA, Zaventem (BE)
Appl. No. 17/413,330
Filed by Bridgestone Europe NV/SA [BE/BE], Zaventem (BE)
PCT Filed Jan. 22, 2020, PCT No. PCT/IB2020/050488
§ 371(c)(1), (2) Date Jun. 11, 2021,
PCT Pub. No. WO2020/152596, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 102019000001153 (IT), filed on Jan. 25, 2019.
Prior Publication US 2022/0016859 A1, Jan. 20, 2022
Int. Cl. B29D 30/06 (2006.01)
CPC B29D 30/0685 (2013.01) [B29D 2030/0694 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for applying a sealing agent to an inner surface of a pneumatic tire;
the method comprising:
rotating, via a support device, the pneumatic tire about an axis of rotation;
applying a layer of sealing agent to the inner surface of the pneumatic tire via a dispensing head arranged within the pneumatic tire;
pressing, via a pressure roller, the layer of just applied sealing agent against the inner surface of the pneumatic tire;
pushing the pressure roller against the layer of just applied layer of sealing agent via an actuator which generates a force having a desired value;
determining, via a force sensor, a measured value of the force generated by the actuator; and
cyclically varying the force generated by the actuator as a function of the measured value of the force.