Transparent Layered Materials Based on Variable Color Polyolefins

Scaling Effects on Color and Transparency of Multilayer Polyethylene Films in Polarized Light

“…Preparation of identical layered film samples with polarizers as outer layers was performed as described in reference. 7 Spectrophotometric measurements were carried out using a spectrophotometer X-Rite Spectro Eye and Gretag Macbeth Key Wizard software, version 2.5.…”

“…The package consisting of several (1 to 10) polyethylene films was placed between the polarizer films stacked on the white filter paper and placed under a fluorescent light source spectrophotometer X-Rite SpectroEye (type D65). 7 Films microstructure was studied using field emission scanning electron microscope (SEM, Jeol, JSM 7500F) operated in secondary electron mode at 1 kV accelerating voltage. To reduce sample surface charging and damage by the electron beam, polyethylene films were coated with a thin 7.5 nm platinum layer using magnetron sputtering (AutoFineCoater JFC-1600).…”

“…Polarized light optical effects have been proposed for manufacturing packaging films and labels protected against forgery. 7 The aim of this paper was to determine the scaling factor effects on transparency, reflectivity and color of the laminates in polarized light.…”

“…High enough transparency is combined with intense color of a single layer low density polyethylene film with special nanosized crystalline structure. 7 This layer is able to change color of passing polarized light, similar to selective light scattering surface of insect wings. 9 The color and transparency of the polymer multilayer stack film observed at a certain angle primarily depend on the relative position of the polarizer and analyzer outer layers.…”

A New Method for Estimating the Clamping Force of Shrink Sleeve Labels

“…The number of layers in materials of this type usually falls within the range of 2–7. Besides strength properties, much attention is also devoted to shaping optimal optical and visual properties [17,18].…”