DSM Engineering Plastics has introduced
Arnitel VT for the manufacture of breathable films. Arnitel Vapor
Transmission films are ideally suited for roofing applications, textile
applications and plasters and for medical gowns and drapes.
Initially, Arnitel VT will be available in two grades:
• Arnitel VT
3108 for both textile applications and roofing applications. This extremely
breathable grade offers optimized rheology for cast film and extrusion coating
and E2-UV masterbatch for roofing UV protection.
• Arnitel VT 3104
for medical applications. This grade offers high breathability as well as a
high melting point for sterilization, which is important during lamination and
washing/sterilization. and optimized rheology for cast film applications.
Processing
Both Arnitel VT grades are optimized for cast
extrusion and extrusion coating processes and their key processing benefits
include lower waste percentages (50% less compared to competitor’s TPE-E
grades). Compared to TPU coatings and films Arnitel has much better film
processing rheology leading to lower waste figures.
There is no need for carrier membranes and equipment choice is less critical.
In addition, they offer a significantly wider processing window in
temperature. DSM is able to provide its own patented UV stabilizing system for
roofing applications: masterbatch E2-UV will enable roofing membranes to
fulfill the combined heat aging and UV test required in the latest European
norms (EN 13859-1).
Key user benefits
Arnitel VT offers users a new degree of
comfort, with Arnitel VT 3108 delivering breathability that is amongst the
highest available in the market today. The level of waterproofing offered by
Arnitel monolithic membranes outperforms classic microporous systems like PTFE
membranes or polyolefinic membranes in roofing as well as in textile
applications. Moreover, the monolithic film gives very high water inlet
pressures and provides an exellent viral and blood barrier in medical
applications – nor will it require treatment with toxic impregnation chemicals
after washing.
Arnitel VT is a flexible material, giving freedom to move and washing and/or
sterilization will not cause loss of performance. Used in breathable roofing
membranes, Arnitel VT will prevent the growth of mold in the wood construction.
