US 5,704,978 A · Coating apparatus

Abstract

There is provided a coating apparatus capable of achieving high-speed coating and a decrease in thickness of a coating film and obtaining a preferable coating film. In an extrusion type coating apparatus including a die having a coating material reservoir to which a coating material is supplied, the coating material being coated on a continuously traveling support member while the coating material is extruded from a slit formed in a tip of the die, a magnet portion having adjacent tip portions to form a magnetic gap is arranged such that the magnetic portion and the tip portion of the die face each other to interpose the support member therebetween, and upper and lower lips defining the slit at the tip of the die are arranged out of contact with the support member.

Claims13

Dependent claims

An extrusion coating apparatus comprising:

a die including a coating material reservoir therein, a tip portion, and a slit extending from the coating material reservoir to the tip portion and dividing the tip portion into a first lip and a second lip, said slit being bounded by a first surface on the first lip and a second surface on the second lip;
and
a magnet portion including a front end with a first arm and a second arm defining a magnetic gap therebetween, the front end of the magnetic portion being disposed in spaced and opposing relation to the tip portion of the die, whereby coating material may be supplied to the coating material reservoir, extruded from the slit and coated on a continuously traveling support member interposed between the front end of the magnet portion and the tip portion of the die and out of contact with the front end of the magnetic portion and the tip portion of the die.

Dependencies are inferred from the claim text.

Coating apparatus

Life of this patent

Coating apparatus

Life of this patent

Abstract

Claims13