Product Information No: PIS 174
Page 1 of 1 Issue No 3 Date : 12 March 2002 Approved by:
MOISTURE BARRIER BAGS
Code BW9xx
Moisture barrier bags are used to pack IC trays, tubes, and reels of components. The bags are made
from a five-layer metalised polyester/polyethylene structure that offers high puncture resistance,
high barrier properties and superior vacuum packing performance. The low MVTR of the material
results in a reduced desiccant requirement and offers a very good cost/performance relationship for
packing moisture sensitive components. Moisture barrier bags meet or exceed the requirements of
MIL-B-81705C, EIA 583.
Construction:
Outer layer Static dissipative metalised polyester
Middle layer Static dissipative metalised polyester
Inner layer Static dissipative polyethylene
Physical Properties:
Moisture vapour
transmission rate <0.3g/sqm/24hrs or <0.02g/100in2/24 hours. ASTM F-1249 (at 37°C and
90% RH) pre flexed.
Puncture resistance 18 lbs FTMS 101C
Tensile strength >20 lbs/in ASTM D882
Tear strength >2 lbs ASTM D1004
Seal strength No delamination (160°F) MIL 81705C
Electrical Properties:
Surface resistance Inner surface <1 x 1011 Ohms EOS/ESD S.11.11
Outer surface <1 x 1011 Ohms EOS/ESD S.11.11
Static decay <2.0 sec (5000-50 Volts) FTMS 101C
EMI shielding >40 dB Mil B-81705C
Capacitance probe <10V EIA 541
Chemical Properties:
Corrosion No effect on aluminium, copper, silver, Pb-Sn coated foil, stainless
steel, Kevlar®, low carbon steel.
Polycarbonate Compatible
For further information, please contact
Vermason Ltd, 1 Avenue One, Letchworth, Hertfordshire SG6 2HB. UK
Tel: +44(0)1462 672005 Fax: +44(0)1462 670440
e-mail : sales@vermason.co.uk
www.vermason.co.uk
