Coating processes – Direct application of electrical – magnetic – wave – or... – Electrostatic charge – field – or force utilized
Reexamination Certificate
2006-09-26
2010-10-19
Parker, Frederick J (Department: 1715)
Coating processes
Direct application of electrical, magnetic, wave, or...
Electrostatic charge, field, or force utilized
C427S472000, C427S473000, C118S621000, C118S623000, C118S624000
Reexamination Certificate
active
07815976
ABSTRACT:
A method and apparatus for manufacturing a resin coated metal sheet. The method includes extruding a molten organic resin by heating from a T-die onto a metal sheet; dropping molten resin onto pre-rolls arranged between the T-die and lamination rolls, and bringing the molten resin in contact with the pre-rolls; and pressing the molten resin and the metal sheet by the lamination rolls to manufacture the resin-coated metal sheet. Electrically conductive bodies are arranged parallel to the widthwise direction of the pre-rolls, and the molten resin is dropped onto the pre-rolls in a state that an electric current is supplied to the conductive bodies, bringing the molten resin into contact with the pre-rolls by electrostatic pinning whereby an oligomer adhered to the pre-rolls is transferred to the surface of the molten resin and removed.
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Fujisawa Kenichi
Inazawa Hiroshi
Maida Norimasa
Matsubara Yasuhiro
Nakamura Takuji
Browdy and Neimark PLLC
Parker Frederick J
Toyo Kohan Co. Ltd.
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