|
Material surface----PP Door values the environmentally
friendly idea and introduced and developed new environmental
filling material---vermiculite. When vermiculite, a
layer-structured mineral with crystal water in it, is
heated to 200¡æ,it begins to expand. Its volume can increase
by 15-25 times and density decreases to 0.6-0.9g/cm3,
the thermal conductivity is rather small and the conservancy
unit weight is between 100-130kg/m3. It is a good heat
insulting material. For good vermiculite the heat resistance
can reach as high as 1000¡æ. What's more, vermiculite
is a good electric insulting material. Vermiculate fireproof
board, as a good filling material, improves the fire
proof property and doesn't contain and poisonous material
and is suitable for your home.
Board section drawing---PP Door upholds the idea that
quality is of primary importance for development. We
use good qualitied cold rolling iron board which is
then shaped by pressing. We use overlay film and painting
dressing to do the surface process.
|
 |