US 12,134,239 B2
Plug for sealing a puncture in a tyre, kit therefor, method therefor, and tyre comprising the plug
Owen Matthews, Daisy Hill (AU)
Assigned to Tyre Tuft Pty Ltd, Daisy Hill (AU)
Appl. No. 16/635,203
Filed by Tyre Tuft Pty Ltd, Daisy Hill (AU)
PCT Filed Aug. 2, 2018, PCT No. PCT/AU2018/050806
§ 371(c)(1), (2) Date Jan. 30, 2020,
PCT Pub. No. WO2019/023754, PCT Pub. Date Feb. 7, 2019.
Claims priority of application No. 2017903058 (AU), filed on Aug. 2, 2017.
Prior Publication US 2021/0086458 A1, Mar. 25, 2021
Int. Cl. B29C 73/06 (2006.01); B29C 73/00 (2006.01); B29C 73/16 (2006.01)
CPC B29C 73/06 (2013.01) [B29C 73/163 (2013.01); Y10T 152/10909 (2015.01)] 16 Claims
 
1. A plug for sealing a puncture in a tyre, the plug comprising a head portion and an attached tail portion, the head portion comprising:
a porous material that comprises open pores and is capable of absorbing >0.02 grams of water per gram of porous material with the porous material forming at least an exterior part of the head portion, wherein the porous material is selected from the group consisting of microfibre suede, bonded leather, PVC/polyester fabric, leather, microfibre leather, PVC/cotton mesh laminate, PVC/polypropylene mesh laminate, PVC/polyester mesh laminate, PVC/silk mesh laminate and PVC/nylon mesh laminate; and
an accelerant selected from the group consisting of a salt, a polar solvent, an acid, and any combinations thereof, wherein the accelerant is retained in the pores of the porous material and is configured to react on contact with a curable sealant selected from the group consisting of anionic stabilized sealants, steric stabilized sealants and anionic colloidal dispersions thereby reducing curing time of the sealant, and wherein the porous material does not comprise the sealant.