What is UHMW?
|One of the
toughest polyethylene classifications available is
the ultra-high molecular weight polyethylene (UHMWPE).
This type of polyethylene has a molecular weight
number in the millions, which gives it its
characteristic high degree of entanglement. Due to
this attribute, mobility of UHMW chains is limited
making fusion during synthesis defective and almost
How is UHMW Film Made?
|The production of
UHMW is similar to that of ceramic . UHMW can be
produced from compression molding or ram extrusion.
Skiving is then done with the use of a very sharp
blade to peel off films from a rotating UHMW rod.
UHMW Film Applications:
|UHMW films are
widely used due to its durability. It has superb
impact, wear, and abrasion resistance. It also has
high resistance to chemicals, corrosion and
radiation . Because of this, it is used in armor
manufacture. Still, UHMW films are mainly used due
to its exceptionally low coefficient of friction and
self-lubricating ability . UHMW are commonly used
for linings and coatings for equipment that require
sliding surfaces. Along with its biological
stability and compatibility, UHMW is developed for
knee and cardiovascular implant uses. Another
special property of UHMW is its porosity which
promotes air and moisture permeability without water
absorption. One disadvantage of using UHMW is that
it has poor stability under high temperatures.
molecular weight polyethylene films are available in
retail quantity. Films with an adhesive side and
paper liner are offered in rolled strips. UHMW,
aside from rods and films, are also available in
Where Can I Purchase UHMW
Andrew Roberts Inc.
is a converter and fabricator of high performance
fabrics, tapes, films and belting. For more
information on UHMW products,
call toll free 800-637-6694