Saphire Polymers

We, Saphire Polymers, manufacture FRP/GRP fiberglass products by using wet lay up process with match die moulding for double side finish, single side smooth contact moulding, and PP/PVC lined with FRP/GRP moulding. We use following procedure for manufacturing these products-

• Gel coat made from aerosil/talk powder, chalk powder mixed with liquid thermosetting plastic called resin which is applied on the mould depending upon the individual requirements of the products constituting up to 0.3mm thick of the product.


• A layer of CSM (chopped strand matt) is laid on the dried gel coat and wetting of the same is done using resin.


• Subsequent layers of Owen roving or CSM are laid with procedure to build up the thickness of desired level.


• In case of match die moulding the moulds are matched and excess resin is squeezed with fasteners to lock the moulds.

The products manufactured by us have advantages like chemically inert to many of the chemicals, low cost of manufacturing in case of low volumes, cost per mould constitutes only making an wooden pattern and maximum of two piece charges, intricate designs can be made without welding or bonding and density between 1.42 to 2 resulting in high strength to weight ratio. There are some limitations also which should be kept in mind like low shelf life of raw materials, high labor components as each and individual piece has to be made separately without the use of machines.