Patent ID: 6986941
Filing Date: 2006-01-17
Classification: B32B,Y10T

Abstract:
1. A multiple layered laminated polyolefin foam having a plurality of polyolefin layers laminated on at least one side of a polyolefin foam by a co-extrusion foaming method and wherein the polyolefin foam has a boiling xylene insoluble content of 0 to 5 wt %, said polyolefin foam comprising: an outermost layer formed from one of the plurality of polyolefin layers, an innermost layer formed from one of the plurality of polyolefin layers, wherein a thickness of the outermost layer is 5 to 80 μm; and a density d (g/L) of said polyolefin foam, a melt flow rate X (g/10 min) of a polyolefin resin constituting the innermost layer, and a thickness Y (μm) of the innermost layer satisfy the following relationships (1) to (4): wherein a thickness of the entire laminated foam is 3 to 8 mm and a closed cell of the laminated foam is no less than 60%, wherein the outermost layer contains a polymeric-type antistatic agent so that a surface layer resistivity is no more than 1×10 wherein a ratio (α/β) of a melt flow rate (α) of the polymeric-type antistatic agent and a melt flow rate (β) of a base resin of the outermost layer is no less than 0.5 and β is 3 to 35 g/10 min.