English to Spanish Medical Chemistry; Chem Sci/Eng Preparing a film from solution

HOLA

Este texto explica cómo preparar una película a partir de una solución:

For materials that are difficult to grind, such as most polymers, another approach is to prepare a thin film of the solid from a solution by evaporating off the solvent. The film may be cast onto an IR-transparent window or onto a suitable support from which it can be easily peeled.

No entiendo a qué se refiere el verbo "peel" aquí. Agradeceré su ayuda.