Tag Archives: Pore structure

About PVA Foaming Know-How


PVA sponge is an open pore structure hence the porosity is an important criterion to determine a sponge quality.  Hence, a quality PVA sponge roller always requires a good control for pore foaming process.  During the foaming process, the PVA raw material shall be reacted with formaldehyde in various process temperature and time in order […]

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