Scrap Rubber Recycling Newsgroup

Location: USA, WHEELING ILLINOIS

Closed Cell Sponge Rubber.
We currently have 2 Million Pounds of Closed Cell Sponge Rubber For Sale. Below is Definition of Product. Closed Cell Sponge Rubber The technically correct term for closed cell sponge rubber is expanded rubber. The cells are like individual balloons, holding gas and not allowing moisture to pass through as long as the cell wall has not burst. The raw compound is mixed on the same type of equipment used to mix solid rubber compounds, but a chemical blowing agent is also added. Under the heat and pressure of a pre-cure or pre-forming process, this additive decomposes and mixes with the rubber compound and generates nitrogen gas. As this reaction is occurring, the mixed batch is placed into an oven and allowed to expand into a bun from 2" to 4" thick. The bun of closed cell sponge rubber is then aged and split into sheets typically from .062" thick and greater.