Patent ID: 6955576

Claim:
A slider comprising: a polyethylene foaming board having a top surface, a bottom surface and edge surfaces; and a composite plastic film encapsulating and bonding with said polyethylene foaming board; said composite plastic film including an outer film comprising an inner surface having a pattern thereon; said outer film being pervious to light; and an inner film comprising an outer surface and an inner surface, said outer surface of said inner film bonded with said inner surface of said outer film, said inner surface of said inner film bonded with said polyethylene foaming board; wherein said outer film has a thickness selected from a range of thicknesses between 0.02 mm to 0.15 mm and said inner film has a thickness selected from a range of thicknesses between 0.01 mm to 0.15 mm; said composite plastic film having concaves on both sides, said concaves on an inner side of said composite plastic film bonded to said polyethylene foaming board.