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Lamination

The process of preparing a product made by bonding together two or more layers of materials or materials.

 

Lay-Up Molding

A method of forming reinforced plastics articles comprising the steps of placing a web of reinforcement, which may or may not be impregnated with a resin, in a mold or over a form and applying fluid resin to impregnate and/or coat the reinforcement, followed by curing of the resin.  When little or no pressure issued in the curing process, the process is sometimes called contact pressure molding. When pressure is applied during curing, the process is often named after the means of applying pressure, such as bag molding and autoclave molding.  A related process is spray-up.

Source: Whittington, Lloyd R.  Whittington's Dictionary of Plastics (Stamford, CT: Technomic, 1968).

 

Low Pressure Lamination

The molding and curing of laminates at a range of pressures from 400 p.s.i. down to and including pressures obtained by the mere contact of the piles.  Specifically, low pressure laminates are restricted to those in the pressure range of 25 to 400 p.s.i. while those employing pressures of 15 p.s.i. down to zero are called contact laminates.

 

Low Pressure Molding

Molding or laminating in which the pressure used in 200 p.s.i. or less.

Source: Whittington, Lloyd R.  Whittington's Dictionary of Plastics (Stamford, CT: Technomic, 1968).