Unvulcanized expanded high green strength synthetic rubber produ

Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...

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260 25HA, 260 326A, 264 28, 264 54, 264175, 264237, 264DIG5, 428167, 428310, B29D 714, B29D 2700

Patent

active

039595455

ABSTRACT:
An expanded rubber, e.g., a foam or sponge-type material is obtained by admixing with a high green strength rubber an expanding or blowing agent, causing the agent to function and then quenching the expanding product to cool and set the same for example with cold water. Various applications of the process include cushioning material, rug underlay, shoe insole, slipper-type footwearing apparel, etc.

REFERENCES:
patent: 2635293 (1953-04-01), Prance
patent: 2642626 (1953-06-01), Yurgen
patent: 2660757 (1953-12-01), Smith et al.
patent: 3194864 (1965-07-01), Richie
patent: 3251905 (1966-05-01), Zelinski
patent: 3317363 (1967-05-01), Weber
patent: 3328503 (1967-06-01), Ancker
patent: 3658978 (1972-04-01), Ancker

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