Method and apparatus for making a solid foamed tire core

Details Method and apparatus for making a solid foamed tire core Method and apparatus for making a solid foamed tire core

1986-12-01

1990-03-20

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

249 57, 249154, 249170, 264 401, 264 455, 264 469, 264310, 264337, 264DIG18, 264DIG67, 425 47, 425145, 425159, 425426, 425543, 425812, 425817R, B29C 6722, B29C 3924, C08J 934

Patent

active

049099728

ABSTRACT:
A method of making a solid core locatable between a wheel rim and a tire fitted to the rim, includes introducing a foamable composition into a mould cavity having a substantially inflexible mould surface. The cavity is suitably shaped so that a core locatable between a wheel rim and a tire fitted to the rim can be moulded therein. The composition is allowed to foam, thereby to fill the mould cavity. Air and excess composition is allowed to vent from the cavity via an elongate vent slit extending along a major portion of the cavity. The foamed core thus moulded in the cavity is removed from the cavity on the composition having set at least partially.

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