moisture-vapor transmission

moisture-vapor transmission

[′mȯis·chər ¦vā·pər tranz‚mish·ən]
(fluid mechanics)
The rate at which water vapor permeates a porous film (such as plastic or paper) or a wall.
References in periodicals archive ?
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.
is a multi-layer barrier dressing flint offers an incredibly high moisture-vapor transmission rate.
It involves determining the performance characteristics required (moisture-vapor transmission rate, oxygen transmission rate, clarity, stiffness, puncture resistance, etc.).
"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.
The films' high MVT (moisture-vapor transmission) rate, excellent stretch and recovery, and quietness also suit them well for use in high-performance athletic and outdoor apparel, footwear, and textile lamination applications.
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.
Two polyether-based TPU compounds discussed at the meeting by BFGoodrich Co., 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.