Thermoforming

PLEXIGLAS^® SHEET: THERMOFORMING SHRINKAGE ALLOWANCES

When the final dimensions of the formed parts are critical, forms must be built sufficiently oversize to allow for shrinkage when the parts cool from forming temperature to room temperature. A shrinkage allowance of approximately 3/32 inch per foot should be made in designing female forms for Plexiglas sheet and about 1/16 inch per foot for male forms. Remember it is better to remove too little material from a form than too much. Also, surfaces of the forms should extend beyond the trim line. This permits the use of slightly oversize sheet, which simplifies handling and compensates for the slight tendency of the plastic to curl away from the form and flare at the edges.

The statements, technical information and recommendations obtained herein are believed to be accurate as of the date hereof. Since the conditions and methods of use of the product and of the information referred to herein are beyond our control, Arkema expressly disclaims any and all liability. NO WARRANTY OF FITNESS FOR ANY PARTICULAR PURPOSE, WARRANTY OR MERCHANTABILITY, OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED, IS MADE CONCERNING THE GOODS DESCRIBED OR THE INFORMATION PROVIDED HEREIN. The information provided herein relates only to the specific product designated and may not be applicable when such product is used in combination with other materials or in any process. The user should thoroughly test any application before commercialization. Nothing contained herein should be construed as an inducement to infringe any patent, and the user is advised to take appropriate steps to be sure that any proposed use of the product will not result in patent infringement.

See MSDS for Health and Safety Considerations.