What Is The Hand Lay-Up Process?
1.1. What Is The Hand Lay-Up Process? Hand
Lay-up is fabrication process of FRP products (Fiber Reinforced Plastic). The
FRP is composite material of Resin and Fiberglass strand or Fiberglass Mat. It
involved building up layers of chopped glass or woven glass chopped strand mat impregnated
with catalyzed resin around a suitable mould. The reinforcement is then rolled
for better wet-out and removing trapped air.
1.2. Steps of Hand lay-up process Hand
lay-up process is an open mold process. It is a simple process to manufacturing
of FRP products Preparing Mold:- We take mold and removing any dust and dirt
from mold. The mold material may be plaster, wood or new fiberglass, apply soft
wax, P.V.A. and buff with soft towel.
· Applying Resin:- Resin is applied on mold by the brush. The brush
is move like to painting of wall.
· Lay-up of Fiberglass:- Brush is applied of resin on mold then
chopped fiber glass strands spread or chopped strand mat for hand lay-up over the resin layer
· Applying Resin:- Again apply the resin layer over the glass strand
layer by using brush.
· Squeeze Action:- Second layer of resin is applied then roller is
move over the layers of resin-fiberglass-resin, for removing the air between in
layers. This action called squeeze action. This squeeze action also used for
compact the product.
· Remold :- Lastly the sheet is removing from mold for hardening of
sheet, the left in air at room temperature. And remold product is final of a
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