Improvements in the construction of laminated plastic material capable of permanently changing its reflexibility after having suffered cold pressures. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of laminated plastic material capable of permanently changing its reflectivity after having undergone cold pressure, and characterized by the superposition of a transparent top layer adapted to undergo the change in reflectivity, and a base layer bonded to the top layer and able to undergo a considerable deformation without rupture, the base layer taking a background color to provide a color contrast to the portions of the upper layer that have undergone the change in reflectivity. (Machine-translation by Google Translate, not legally binding)