THERMOFORMED POLYESTER CONTAINER EXCELLENT IN SLIP PROPERTIES

摘要

PURPOSE: To impart excellent slip properties and stacking preventing properties by laminating a skin layer wherein specific inert particles and a specific ester product are compounded to a core layer composed of polyester having specific intrinsic viscosity. CONSTITUTION: A polyester polymer with intrinsic viscosity of 0.4-1.1 is synthesized by the polycondensation of a dicarboxylic acid component based on terephthalic acid and a glycol component consisting of 90-10mol% of ethylene glycol and 10-90mol % of 1,4-cyclohexane dimethanol. 0-10000ppm of inert particles wherein the particle size of secondary particles is 10μm or less and 0.01-5wt.% of an ester product of polyhydric alcohol having three or more hydroxy groups and 12 or more C aliphatic monocarboxylic acid are compounded with the polyester polymer to form a skin layer. A core layer composed of polyester with intrinsic viscosity of 0.4-1.1 is laminated to the skin layer to constitute a polyester laminate. In this case, the skin layer is laminated to at least the single surface of the core layer.