Pneumatic tire and method of manufacturing the same
View Patent ↗A method of manufacturing a pneumatic tire including the steps of: curing a pneumatic tire including, on at least a part of the inner surface of the tire, a resin layer which is formed of any one of a thermoplastic resin and a thermoplastic elastomeric composition obtained by dispersing an elastomer in a thermoplastic resin; disposing a noise absorbing member formed of a porous material on the resin layer; and attaching the noise absorbing member to the resin layer by bonding a locking member formed of a thermoplastic resin to the resin layer through the noise absorbing member by thermal fusion. The locking member has a width, in the tire axial direction, that is less than a width of the noise absorbing member.
1. A method of manufacturing a pneumatic tire comprising the steps of:
curing a pneumatic tire including, on at least a part of the inner surface of the tire, a resin layer which is formed of any one of a thermoplastic resin and a thermoplastic elastomeric composition obtained by dispersing an elastomer in a thermoplastic resin;
disposing a noise absorbing member formed of a porous material on the resin layer; and
attaching the noise absorbing member to the resin layer by bonding a locking member formed of a thermoplastic resin to the resin layer through the noise absorbing member by thermal fusion,
wherein the locking member has a width, in the tire axial direction, that is less than a width of the noise absorbing member.
2. The method of manufacturing a pneumatic tire according to claim 1 , wherein an ultrasonic welder is used for the thermal fusion bonding of the locking member and the resin layer.
3. The method of manufacturing a pneumatic tire according to claim 1 , wherein an oscillating horn having chamfered end portions of the tip in the width direction thereof is used as an oscillating horn for the ultrasonic welder.
4. The method of manufacturing a pneumatic tire according to claim 1 , wherein a constituent material of the locking member is the same kind of a thermoplastic resin as that included in the resin layer.
5. The method of manufacturing a pneumatic tire according to claim 1 , wherein the difference between the fusing temperature of the locking member and the fusing temperature of the resin layer is not more than 20° C.
6. The method of manufacturing a pneumatic tire according to claim 1 , wherein the porous material of the noise absorbing member is a polyurethane foam.
7. The method of manufacturing a pneumatic tire according to claim 1 , further comprising a step of providing a notch portion in the noise absorbing member in a position corresponding to the location of the locking member.
8. The method of manufacturing a pneumatic tire according to claim 1 , further comprising a step of providing a cut in the noise absorbing member at a position corresponding to the location of the locking member.
9. The method of manufacturing a pneumatic tire according to claim 1 , wherein during the bonding step, the noise absorbing member is partially compressed when the locking member is made to contact the resin layer.