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US 4,060,649 AGranted
Paint curtain machine and method of painting
AssigneeSprague Electric Company
InventorJames H. Coleman
Life of this patent
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AssigneeSprague Electric Company
InventorJames H. Coleman
Estimating the term…
A paint curtain machine for coating a substrate with paint has a fix mounted guide plate at either edge of the curtain for guiding and determining the edges of the falling paint curtain that otherwise tends to draw together and pour or at least to wrinkle and produce uneven paint coatings. The inner edges of the guide plates to which the paint curtain edges cling by capillarity are sloped inwardly toward the bottom of the curtain. Excess paint falling outside the left and right edges of the paint curtain fall about straight down the faces of the guide plates leaving a region of those faces dry adjacent the paint curtain. A highly uniform thickness of the paint curtain is realized permitting the attainment of thinner paint curtains having a high resistance to tearing. This system and method are especially advantageous in making thin ceramic dielectric layers in the production of monolithic ceramic capacitors.
In a paint curtain machine for coating a substrate with a fluid paint of the type having a paint reservoir from which a curtain of paint is caused to fall from a line of discharge at said reservoir onto a moving substrate to be painted, the improvement comprising two spaced plates each having a major surface that is essentially in the plane of said paint curtain and having a plate edge defining a planar surface extending from a point in said line of discharge and spaced inwardly of the extremity of said line of discharge, said planar surfaces facing one another and extending inwardly from said respective points and towards one another, said planar surfaces guiding the edges of said curtain therebetween which has been intercepted at said points, and the excess of said curtain from the line of discharge being diverted at said points.
A paint curtain machine for coating a substrate with a fluid paint comprising a paint reservoir, a paint discharge means for continuously discharging said paint from a line of discharge at said reservoir to cause said discharged paint to form a falling paint curtain, a substrate conveying means for moving a substrate to be painted through said falling paint curtain, two spaced plates each being fixedly mounted and each having an edge of planar surface extending from a point within said line of paint discharge, said two points being spaced inwardly of the extremities of said line of discharge, a major surface of each of said plates being essentially in the plane of said paint curtain and said planar edge of one of said plates facing said planar edge of the other of said plates, said facing plates each sloping inwardly toward each other and in a downward direction for the purpose of guiding and determining the edges of said paint curtain intercepted between said planar surfaces at said points and to substantially eliminate wrinkles in said intercepted falling paint curtain and the excess of said curtain from the line of discharge being diverted at said points.
In a method for coating a substrate with a fluid paint including providing a falling paint curtain by discharging a fluid paint from a line of discharge at a paint reservoir and moving said substrate through said falling paint curtain, the improvement comprising (a) fixedly mounting two members, each having a planar surface, with said two planar surfaces extending from two spaced points, respectively, within said line of discharge, said points being each spaced from an extremity of said line of discharge, said planar surfaces facing each other and extending from said line downwardly and sloping toward each other for guiding therebetween the portion of said discharged paint intercepted at said points;
A method for painting a surface of a substrate comprising:
Dependencies are inferred from the claim text.