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2. Production of EPS-M from expandable polystyrene
Expanded polystyrene is obtained from expandable polystyrene after three manufacturing stages:
pre-expansion or pre-foaming. It is at this stage that the final density is determined;
ripening and storage. It is at this stage that the pearls rest for several hours to allow them to stabilize;
molding. This is where the beads are soldered together.
The pre-expansion, ripening and storage operations have three main aims:
allow surface pentane to disperse in order to reduce the thermosensitivity of pre-expanded pearls during moulding;
remove excess water from pearls to obtain dry pearls;
allow time for air to enter the cells to...
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Production of EPS-M from expandable polystyrene
Production of extruded expanded polystyrene (EPS-E or XPS)
Documentation sources
References
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Syndicat National des Plastiques Alvéolaires – SNPA [email protected]http://www.snpa.fr
...Economic data
The global EPS market totalled 3.75 million tonnes in 2004, of which 46% was used in packaging.
The breakdown of the insulation and packaging markets varies from one continent to another. These are entirely representative of building traditions (whether or not to insulate) and the importance of industries using EPS packaging. In Japan, for example, a leader in the electronics sector and the world's...
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