Patent ID: 9126362
Filing Date: 2015-09-08
Classification: B29C

Abstract:
1. An apparatus for corona treating film, comprising: a supply source, said source providing a continuous web of film material for corona treating; a first transport roller, said first roller being rotatably mounted in a frame, having a first longitudinal axis and having a width greater than said film; a first front side treater head, said first front side head having a first face, a first leading edge, a first trailing edge, a first width, a first length and being disposed at a first predetermined distance from said first roller, said first leading edge being parallel to said first axis; a second front side treater head, said second front side head having a second face, a second leading edge, a second trailing edge, said first width, said first length and being disposed at said first predetermined distance from said first roller, said second leading edge being parallel to said first axis and spaced from said first trailing edge by a second predetermined distance; said treater heads each comprise at least one treater element, said treater element being of modular design to permit adjustment of a width of treatment area on said film; said treater elements comprise a flat plate of electrically conductive material, said plate having a first predetermined thickness; said plate having a treating portion and an attaching portion; said treating portion having a curved profile, said profile shaped to correspond to a curvature of said first transport roller; and a mounting aperture, said aperture being orthogonal to a plane of said plate and spaced a second predetermined distance from a distal end of said attaching portion; at least two positioning rods, said positioning rods extending across at least a portion of said width of said transport roller; said positioning rods being sized, shaped and disposed to fit slidably within said aperture and locate said treater elements adjacent said first transport roller; said film emerging from said supply source, continuing over said first transport roller in a first direction; a high voltage power supply, said power supply providing a high voltage electric current to said first and second front side treater heads; said first transport roller being grounded and providing a return path for said electric current provided to said first and second front side treater heads; and wherein a high voltage electric arc will pass through said film in a first path as it moves between said first and second front side treater heads and said first transport roller, thereby corona treating a front side of said film.