Patent ID: 8052917
Filing Date: 2011-11-08
Classification: B29C,B32B,B65D,C08K,C08L,G02B,Y10T

Abstract:
1. A process for the production of a colored transparent oriented article made of a blend of a major component of a polyester, a minor component of at least one incompatible filler dispersed therein, and at least one light absorbent composition, comprising: blending the filler into the polyester and injection molding the filler and the polyester into a first preform; blow molding the first preform into an oriented first article of single layer construction into a desired size and shape of the first article, wherein the article comprises domains comprising the incompatible filler and at least some of the dimensions of the domains in an oriented single continuous location of the article are within a range of from about 400 nm to 700 nm; and the article has visual haze at the oriented single continuous location of the oriented article; and finding a light absorbent composition that absorbs light in a region of the visible spectrum at wavelengths that at least substantially correlate to the dimensions of the domains in the polyester in the range of 400 nm to 700 nm wherein the step of finding the light absorbent composition includes analyzing the absorption spectra of the composition and considering the spectrum in view of the range of dimensions of the domains so that the light absorption spectrum of the light absorbent composition at least substantially correlates to the range of dimensions; and adding an effective amount of the light absorbent composition to the polyester and the incompatible filler and injection molding the effective amount of the light absorbent composition, the polyester and the incompatible filler into a different preform of a same desired size and shape of the first preform and blow molding the different preform into a different, transparent oriented article into the same desired size and shape of the oriented first article and having a same oriented single continuous location as the oriented first article, to substantially mask any visual haze at the oriented single continuous portion of the different oriented article.