According to Dan Falla, Nova technical-service specialist, the thickness of the HDPE typically determines the moisture-vapor transmission
rate (MVTR) of the film.
Treated concrete surfaces remain fully breathable and their natural moisture-vapor transmission
is not affected.
These high-performance films can be used in a wide variety of applications that demand high moisture-vapor transmission
, excellent stretch and recovery, quietness, or wash durability.
The resulting polyurethane has high temperature resistance and high moisture-vapor transmission
, as well as antistatic properties.
The material we produce is extremely soft with a very high moisture-vapor transmission
rate," Inglis states.
Omniflex's Transport family includes films of polyurethane, copolyester, and ether-amide polymers that are laminated to fabrics demanding high moisture-vapor transmission
, good drape, and wash durability.
However, PLA's moisture-vapor transmission
rate (MVTR) is at least 10 times higher than PETs, which imposes limits on shelf life for PLA applications.
Cleveland, are advantageous for use in textile laminates because they have five to six times the moisture-vapor transmission
rates of standard TPUs, the company says.
Second, the filler reduces the moisture-vapor transmission
rate (MVTR) through the web by 15-30% at the loadings tested.