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Lamination
Types of fiber glass
Fiber glass is available in many variations, orientations
and weights. There are also many types of resins avail-
able. The key to a well-functioning matrix is to choose
resin and fiberglass that are suited to one another.
Abbreviations
E
L
T
LT
BX
A
E-glass
Longitudinal (0°)
Transverse (90°)
0°/90° biaxial
+45°/-45° biaxial or double diagonal
Chopped strand mat
Avoiding secondary bonding in the
lamination
Secondary bonding occurs when a new layer of fiber-
glass is added to a fiber glass layer that has already
cured. This secondary bonding becomes a weak link in
the hull. The new layer will not bond adequately if the
cured layer is not first sanded and washed clean from
contaminants.
Examples of when secondary bonding may occur
The first half of the total number of layers is laid on a
Friday and left to cure over the weekend. There is a
heat wave over the weekend with higher temperatures.
Work continues on Monday with the remaining layers
added to those that have almost fully cured. If the
existing layer is not sanded and washed clean from
contaminants, secondary bonding will occur.
Core material
IMPORTANT!
The core material must have a density of 60 kg/m
3
(3.8
lb/ft
3
) (aka 60H) or more.
IMPORTANT!
The use of hull core materials in general use does not
deviate from instructions regarding Volvo Penta IPS
reinforcements.
P0009095
E-LTM
P0009094
E-BXM
Installation, Volvo Penta IPS
52
47704162 10-2014 © AB VOLVO PENTA
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