Patent ID: 6670592
Filing Date: 2003-12-30
Classification: B65D,C08K,C08L

Abstract:
A method of preparing a microwaveable, mineral-filled polypropylene food contact article comprising:(a) preparing a melt-compounded composition comprising from about 40 to about 90 percent by weight of a polypropylene polymer, from about 10 to about 50 percent by weight of a primary mineral filler consisting predominately of mica and an effective odor-reducing amount of a basic organic or inorganic compound, said melt-compounded composition exhibiting an odor index of less than 0.75; (b) extruding said melt-compounded composition into sheet form; and (c) forming said food contact article from said sheet, wherein said basic organic or inorganic compound is operative to reduce undesirable odors in said melt-compounded composition to the aforesaid odor index value of 0.75 or less.