Non crushing foam system for automotive seat

摘要

In general,cold-cured flexible foams have a high content of closed cells during a foaming process because of a high reactivity of foaming components and curing at a low temperature.Cold-cured flexible foams require mechanical method such as roll crushing or vacuum crushing to open a high content of closed cells for preventing shrinkage and crack of foam after demolding.But this mechanical crushing process can yield foams with poor properties and reduce productivity on account of increasing costs for utilities,electricity,manpower and repair.