Patent ID: 7264523

Claim:
A slider comprising: a first plastic film having an inner surface, said first plastic film has a thickness from 0.02 mm to 0.3 mm; a polyethylene foaming skin comprising an upper surface and a lower surface, said upper surface is bonded with said first plastic film, said polyethylene foaming skin has a foaming value from 1.9 PCF to 6 PCF; and a second plastic film having an inner surface bonded with said lower surface of said polyethylene foaming skin, said second plastic film has a thickness from 0.3 mm to 1.5 mm, wherein said first plastic film has concaves on both sides, said concaves on an inner side of said first plastic film are united with said polyethylene foaming skin, thereby increasing bonding surfaces between said first plastic film and said polyethylene foaming skin.