EPDM what's the difference between the obturator and the open rubber?
Rubber and plastic sponge closed hole (insoluble water), non closed (hydrophilic); cold must use closed rubber plastic sponge, heat preservation with non closed rubber and plastic sponge.
According to the pore structure is different, can be divided into the obturator (between holes and hole mutuallyunintelligible), holes (perforation and perforation between the hole wall is not completely separated, with a certain degree of connectedness) and mixed hole (both opening and closing two structure) three.
The spongy rubber sheet is a spongy, porous structure of vulcanized rubber. There are openings, closed cells, mixed holes of the points. Light, soft, elastic and difficult to heat transfer. The utility model has the functions of shock prevention, shock relief, heat insulation, sound insulation, etc..
