The present disclosure relates to a process and a system for manufacturing an HSST tyre, as well as the HSST tyre manufactured by the same. The process for manufacturing an HSST tyre includes a cleaning step, a spraying step, and a forced-cooling step. The cleaning step includes an air-drying procedure for evaporating the isopropanol solution on the tyre to be treated with air-drying gases. The forced-cooling step is configured to forcibly cool the tyre to be treated that has been sprayed with the high molecular organic material. By means of accurate design for each step and procedure, the relying on operator's experience is eliminated and thus the performance stability of the HSST tyre is guaranteed. By means of the air-cooling procedure and the forced-cooling step, the time taken to manufacture an HSST tyre is substantially shortened, making it possible to produce the HSST tyre in a large scale.

A method for improving a cement spraying efficiency for a self-repairing tire includes: inputting tire parameters into a control system, including rim diameter, section width, aspect ratio, cement thickness and cement density; calculating a cement spraying amount for a tire; calculating a crown cement thickness separately; starting a spraying device, and evenly spraying a cement in a cement storage tank on a tire surface; and finally drying, that is, heating to speed up solidification of the cement, thereby completing self-repair. The control system automatically calculates the cement spraying amount required for repair based on the tire parameters such as section width, aspect ratio and rim diameter, and realizes mass production of self-repairing tires according to the characteristics of the tires. The method is applicable to all tires of different specifications, and can realize a one-time spraying operation, thereby improving the spraying efficiency for self-repairing tires.

A method and a system for applying a sealing agent to the inner surface (2) of a pneumatic tire (4) comprising a supply circuit (10) having a sealing agent collection device (11) comprising a tank (14); a sealing agent heating device (12);

and a sealing agent supply device (13) implemented by means of a pumping device (17) that supplies the sealing agent to an applicator device (7), a piston (26), an extractor element (28) intended to withdraw the sealing agent and to supply it to the pumping device (17); a piston (26) position control device (30); and a level sensor (29) for detecting the quantity of sealing agent within the tank (14); wherein the passage of the control device (30) at the position of the level sensor (29) determines the beginning of depletion position of the tank (14) and a completely empty position of the tank (14) as a function whereof the extractor element (28) and heating element (12) are actuated.

Provided is a pneumatic tire having sufficient sealing performance. The present invention relates to a pneumatic tire including a sealant layer located radially inside an innerliner, the sealant layer being formed by applying a sealant to the inner periphery of a tire from which mold release agents have been removed.

A motor vehicle with a compressor assembly for the supply of a pressure medium to a tire cavity of a tire of a motor vehicle. The compressor assembly has a compression chamber which is rotationally fixed in relation to the motor vehicle wheel, and the compression chamber and the tire cavity are connected via a fluidic connection for the conveying of a pressure medium from the compression chamber into the tire cavity. A tire sealing device has a sealant reservoir with a first connection fluidically connected to a tire cavity of a tire of the motor vehicle to be repaired, and a second connection fluidically connected to a pressure medium source secured to the motor vehicle. The sealant is conveyed out of the pressure medium source into the tire cavity of the tire to be repaired by means of the pressure medium.

An assembly of a pneumatic tire and of a wheel, the pneumatic tire (10) being fitted to the wheel. The assembly comprises first and second self-sealing products housed in the internal volume (V) of the pneumatic tire (10). The first self-sealing product, referred to as solid self-sealing product (OS), covers a predetermined part of the internal surface of the pneumatic tire (10). The relative position of this predetermined part in the pneumatic tire (10) does not substantially vary under the effect of gravity. The second self-sealing product, referred to as liquid self-sealing product (OL), is in the liquid form.

A method is for applying sealing agent to an inner surface of a pneumatic tire. The method includes using a first extrusion device to form at least a part of a first throughput having base elastomer, using a second extrusion device to form at least a part of a second throughput having a curing agent, and mixing the first throughput with the second throughput to form the sealing agent. In addition, a layer of the sealing agent is applied to the inner surface of the pneumatic tire by a dispensing head.

A tire sealant composition for use in tubeless tires is disclosed. The tire sealant composition primarily serves to seal the tire around the wheel rim and particularly in the tread area of the tire against punctures. The composition includes polymeric material, carrier fluid and particulate system. The tire sealant composition is flowable, non-toxic, non-corrosive and thermally stable.

This invention discloses a technique for replenishing the level of sealant in self-sealing tires at the time that a puncture in the tire is being repaired or when the tire is being recapped. This technique provides the tire with its original level of self-sealing capabilities and will enhance the possibility of the tire remaining in service until it can be conveniently repaired. This method involves (1) injecting a liquid sealant formulation into the sealant layer of a self-sealing tire through at least one puncture hole therein, and (2) sealing the hole or holes in the supporting carcass and the innerliner of the tire. The sealant utilized is typically liquid polyisobutylene having a weight average molecular weight of 25,000 to 200,000. The sealant formulation used can optionally also contain a colorant or a pigment.

A pneumatic tire includes a resonator attached to the inner periphery of the tire, the resonator including a tube with an opening, and a cavity connected to the tube. The pneumatic tire further includes s a tread portion and each resonator faces the tread portion, the tread portion includes at least one circumferential longitudinal groove, and the opening is provided to penetrate a circumferential longitudinal groove of the tread portion.