Reinforced plastics vacuum-bag

SCRIMP process This Seeman Composites Resin Infusion Process (SCRIMP) is described as a gas-assist resin transfer molding process. As an example glass fiber fabrics/ thermoset vinyl ester polyester plastic and polyurethane foam panels (for insulation) are placed in a segmented tool. A vacuum is pulled with a bag so that a huge amount of plastic can be drawn into the mold (Marco process approach). Its curved roof is made separately and bonded to the box with mechanical and adhesive fastening. It is similar to various reinforced plastics molding processes. 

Boat hulls were among the earliest applications of modern reinforced plastics. The United States Navy introduced their first 8.5 m (28 foot) fibreglass personnel boat in 1947, and was contracted to pass 3000 vessels by 1966. The orders for the first two vessels specified construction by the pressure bag method and by the vacuum injection system in order to achieve higher quality than was obtained by the then current hand-lay-up technique [1]. One of the earliest large GRP structures for submerged... 

Figure V.l Vacuum bag molding (Ref Harper, C.A., Laminates and Reinforced Plastics Materials and Processes Handbook of Plastics, Elastomers, and Composites, 3" ed., C.A. Harper, ed., McGraw-Hill, New York, 1998)...

In addition to steels materials of construction include all types such as aluminum, copper, and beryllium-copper. Examples of other different types include wood and plastic for thermoforms and reinforced plastics (RPs). RP tools also include vacuum and pressure flexible bags. Operations of tools vary from fabricating solid to foamed products such as using a steam chest for producing expandable polystyrene foams. 

Pressure bag compacting compacting reinforced plastics moulding by applying air pressure inside a heated vessel, as opposed to vacuum bag compacting (qv). 

Vacuum bag compacting when moulding reinforced plastics by hand lay-up (qv) the moulding can be compacted by enclosing it and... 

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