Patent ID: 6401287
Filing Date: 2002-06-11
Classification: B08B

Abstract:
A system for cleaning particulate contamination from first and second surfaces of a web substrate being conveyed in a conveyance direction along a web path, comprising a first turret having a first axis of rotation disposed transversely of said web conveyance direction and having first and second contact cleaning rollers in said first turret disposed transversely of said web conveyance direction on opposite sides of said first turret axis of rotation and on opposite sides of said web path so that said web path passes between said first and second contact cleaning rollers, said first turret being rotatable about said axis such that said first and second contact cleaning rollers in said first turret may be engaged into cleaning position with said first and second surfaces of said web substrate and may be disengaged from said first and second surfaces of said web substrate into a null position, said first and second contact cleaning rollers being driven by contact with said first and second web surfaces respectively and turning synchronously therewith; said system further comprising a second turret spaced apart along said web path from said first turret, having a second axis of rotation disposed transversely of said web conveyance direction and having first and second contact cleaning rollers in said second turret disposed transversely of said web conveyance direction on opposite sides of said second turret axis of rotation and on opposite sides of said web path so that said web path passes between said first and second contact cleaning rollers, said second turret being rotatable about said axis such that said first and second contact cleaning rollers in said second turret may be engaged into cleaning position with said first and second surfaces of said web substrate and may be disengaged from said first and second surfaces of said web substrate into a null position, said first and second contact cleaning rollers in said second turret being driven by contact with said first and second web surfaces respectively and turning synchronously therewith; said system further comprising third and fourth contact cleaning rollers disposed transversely of and adjacent opposite sides of said web in said first turret so that said web path passes between said third and fourth contact cleaning rollers.