Composite comprising polyester foam sheet and polyester resin layer, and vehicle interior and exterior materials comprising same

A polyester composite, comprising:

• a polyester foam sheet having a first surface and second surface;
• a first polyester resin layer laminated on at least the first surface of the polyester foam sheet, wherein the polyester foam sheet has an average basis weight in a range of 500 to 850 g/m2,
• a polyester fiber layer laminated on the first polyester resin layer;
• a first polyester-based adhesive resin layer interposed between the polyester foam sheet and the first polyester resin layer;
• and
• a second polyester-based adhesive resin layer interposed between the first polyester resin layer and the polyester fiber layer;
• wherein the polyester foam sheet has closed cells measured according to DIN ISO 4590 of 90% (v/v) or more among total cells,
• wherein the polyester foam sheet has 1 to 30 cells per mm2,
• wherein the first polyester resin layer has an average thickness in the range of 60 to 350 μm,
• wherein each of the first and second polyester-based adhesive resin layers is a polyester-based elastic adhesive resin which is a condensation-polymerization product of a hard segment which is an esterification reaction product of diol and dicarbonic acid and a soft segment which is a polyol,
• wherein the polyester composite has a flexural strength of 20 N/cm2 or more which is measured when a specimen is fixed with a 100 mm support span and a flexural load is applied thereto at a rate of 5 mm/min according to ASTM D 790,
• wherein the polyester fiber layer is formed of an aggregate of modified cross section hollow fibers, each modified cross section hollow fiber includes a hollow part, a shape maintaining part and a volume control part on the basis of a cross-sectional shape, and the volume control part has a shape which protrudes in a direction opposite to a center of a fiber in which an end part has a round shape.