FOXBORO GW30

Description

FOXBORO GW30
MAIN FEATURE: FORMABLE
GW30 is a grid scored material in two directions, which makes it
formable and flexible for use in curved molds or applications.
DESCRIPTION
The sheet has U-shaped cuts in length and width direction of the
sheet almost all the way through the core. To reinforce the sheet
a light weight fiberglass scrim fabric is used on the opposite side
of the cuts.
BENEFITS
• Easy and robust to handle
• Multipurpose suitability
• Core bedding vacuum bonding
• Formable
GW30 is probably one of the most commonly used and appreciated
finishes due to its flexibility and easy to use characteristics.
The most common way to install grid scored materials in a curved
mold is to allow the grid scores to close, in a concave mold -the cuts
are facing the installer, therefore yielding the following
benefits;
•Reduces resin uptake
•Decreases resin shrinkage – less surface printing
•Reduces exothermic temperature
TYPICAL APPLICATIONS
• Blades
• Nacelles
• Hulls
• Superstructures
• Tanks
• Etc
GW30 is used in numerous of applications due to its
easy to use characteristics. GCWC30 conforms and
shapes itself, which in practise means that it evens
out any irregularities on a previously laid laminate
for instance.
PROCESS CHARACTERISTICS
Suitable for curved surfaces, whether your manufacturing
method is hand laminating, vacuum bonding or infusion.
The grid score grooves are only for curvature and should not be
confused with infusion grooving. It is very commonly used in hand
lay-up or sprayed lay-up processes. In wet lay-up techniques it is
preferred to wet prime the core before putting it down in a
laminate, which preferably is a chopped mat bedding layer.
The proper and recommended method in wet lay-up
manufacturing is to use a vacuum bonding technique combined
with a suitable core bedding adhesive.
For infusion, additional finishing is neededGW30 is a good choice
where core bedding techniques are used, either it is through
vibration or vacuum bagging techniques.
In infusion or other vacuum resin transfer molding processes
GW30 is often combined with other finishing options to secure a
good wet out of the surface of the core, alternatively flow meshes
or flow mats are used in combination.
The preferred way to turn the GW30 down in a laminate or
mold is to enable it to close the grid scores, which reduces resin
uptake, decreases exothermic peaks and decreases risk of surface
printing.
LIMITATIONS AND CONSIDERATIONS
If the core is placed correctly in the mold, as described in process
characteristics, the grid scores will be closed or next to closed.
If the core is not placed correctly, the curvature grooves will be
opened/widened, creating gaps which will be filled up with resin
and creating race tracks in resin transfer molding processes.
Infusion resin consumption increases with thickness.
In comparison with GS30 materials GW30 has a higher degree of
resin uptake.
FINISHING SOLUTIONS
Diab utilizes a combination of its complete range of finishing
options to provide an optimized solution based on customers’
requirements and objectives. Should the standard range not fulfill
the needs, tailor made cuts and solutions can be defined and
developed. Normally this is not needed as the range of options and
Diab competence covers majority of needs in various industries.
KITS
To fully optimize the application for cost, performance and
quality Diab can engineer and design a core kit delivered in lay-up
sequence. The kit of precut pieces is optimized for mechanical
requirements, lay-up, manufacturing process, cost and quality
objectives. The kit is produced by our skilled personnel using a
combination of traditional and CNC equipment to achieve the
desired result.
By working with kits our customers gain access to the full
competence of Diab in terms of engineered design, core materials
and range of manufacturing techniques, all having a profound
impact on the ability to reach the objectives of