Experimental study on the application of PET thin-film optical sheets in shock imprinting technology

Abstract

Shock imprinting technology using a polymer stamper enables the precise creation of fine imprints on metal plate surfaces. Particularly, thin stampers have shown exceptional effectiveness in this technology. Polyethylene terephthalate (PET) possesses favorable processability, making it suitable for manufacturing thin stampers; however, it lacks excellent mechanical strength. This study experimentally investigated the feasibility of employing a PET stamper in shockimprinting technology. Controlled pressure conditions can create ridges on the surface of a thick Al plate, reaching depths comparable to the cavity depth of the stamper. These results conclusively establish the applicability of PET stampers in shock imprinting technology and affirm the potential of PET as a promising candidate for a mold material due to its ease of preparation and low environmental impact.