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HAND LAY UP MOULDING PROCESS



INTRODUCTION

·       It is the method of production of fiber-reinforcement plastics.

·       It is the open mould process.






·       It is the simple and oldest method.

·       There is virtually no limit to the size of the part that can be made.


·       The mould can be made of wood, sheet metal, plaster and FRP composite.










·    Working

·       In order to produce a composite by using glass fibres and polyester resin, a gel coat is first applied to the open mould.


·       Fibre glass reinforcement which is normally in the form of a cloth or mat is manually placed in the mould.

·       After pouring the plastic resin which are mixed with the catalysts and accelerators.


·       Rollers are used to remove entrapped air.


·       To increase the thickness of the composite being produced, more layers of fiber glass mat and resin are added.







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