VERFAHREN ZUR HERSTELLUNG EINES NOTLAUFRINGS FÜR EINEN REIFEN, UND DERART HERGESTELLTER NOTLAUFRING

摘要

Forming a safety support of closed cellular foam includes kneading rubber composition and forming the kneaded composition to form foamable expandable plug of desired section and then placing it in sealed mold where it is pre-cooked. The composition includes≤15 mol wt % elastomeric diene, water and a foaming agent activated by the pre-cooking. Forming a safety support of closed cellular foam includes kneading a rubber composition and forming the kneaded composition to form a foamable expandable plug of a desired section and then placing it in a sealed mold where it is pre-cooked so it expands. The composition includes at most 15 mol wt % elastomeric diene, water and a foaming agent activated by the pre-cooking. The mol wt % of water in the composition is 3 - 6 wt% of the diene. Independent claims are included for the following: (a) An expandable and foamable plug as above. (b) A safety support made as above. (c) Reducing heating due to running a flat tire includes using a safety support as in (b).