# US 5,350,603 A · Method for painting window lineal members > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,350,603 A - Document ID: US5350603A - Status: Granted - Kind: A - Application number: 07/884,357 - Filed: 1992-05-15 - Granted: 1994-09-27 - Earliest claimed: 1992-05-15 - Assignees: Owens Corning Fiberglas Technology, Inc. - Inventors: Roger A. McFarland; Gordon P. Armstrong - Web page: https://patentgrep.com/patent/US5350603A ## CPC - B05D 1/045: {on non-conductive substrates} - B05D 3/0218: {Pretreatment, e.g. heating the substrate} - B05D 7/02: to macromolecular substances, e.g. rubber (treatment or coating of shaped articles made of macromolecular substances C08J7/00) - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) ## Abstract A method for painting a plastic lineal member comprises heating the surface of the lineal member to a temperature greater than about 130.degree. F., coating the lineal member with an aqueous solution, drying the lineal member, painting the lineal member, and curing the paint on the lineal member. ## Claims ### Claim 1 The method for electrostatically painting a plastic elongated substrate comprising heating the surface of the elongated substrate to a temperature greater than about 130.degree. F., coating the elongated substrate with an aqueous conductive solution, drying the elongated substrate, electrostatically painting the elongated substrate, and curing the paint on the elongated substrate. ### Claim 2 (depends on 1) The method of claim 1 comprising heating the surface of the elongated substrate to a temperature within the range of from about 135.degree. F. to about 190.degree. F. ### Claim 3 (depends on 2) The method of claim 2 comprising heating the surface of the elongated substrate to a temperature within the range of from about 140.degree. F. to about 160.degree. F. ### Claim 4 (depends on 2) The method of claim 2 comprising abrading the surface of the elongated substrate prior to the coating step. ### Claim 5 (depends on 4) The method of claim 4 in which the abrading step is carried out by washing the surface of the elongated substrate with water and aluminum oxide. ### Claim 6 (depends on 5) The method of claim 5 in which the abrading step is carried out by washing the surface of the elongated substrate with a mixture of water, aluminum oxide and glass beads. ### Claim 7 (depends on 2) The method of claim 2 in which the conductive solution is an aqueous saline solution. ### Claim 8 (depends on 7) The method of claim 7 in which the conductive solution comprises calcium chloride, lithium chloride and an ethoxylated nonyl phenol. ### Claim 9 (depends on 2) The method of claim 2 in which the elongated substrate is mounted on a pair of holding members which are offset from the center of gravity of the elongated substrate, thereby biasing the elongated substrate into contact with a grounding member. ### Claim 10 The method for electrostatically painting a plastic elongated substrate, the elongated substrate having a hard resinous outer surface and an inner core of insulating material, comprising heating the surface of the elongated substrate to a temperature within the range of from about 135.degree. F. to about 190.degree. F., coating the elongated substrate with an aqueous conductive solution containing at least one salt, drying the elongated substrate, electrostatically painting the elongated substrate, and curing the paint on the elongated substrate. ### Claim 11 (depends on 10) The method of claim 10 in which the surface of the plastic elongated substrate comprises a thermoset polyester. ### Claim 12 The method for electrostatically painting a plastic elongated substrate comprising heating an aqueous conductive solution to a temperature greater than about 140.degree. F., coating the elongated substrate with the conductive solution, drying the elongated substrate, electrostatically painting the elongated substrate, and curing the paint on the elongated substrate. ### Claim 13 (depends on 12) The method of claim 12 comprising heating the aqueous conductive solution to a temperature within the range of from about 150.degree. F. to about 200.degree. F. ### Claim 14 (depends on 13) The method of claim 13 comprising heating the aqueous conductive solution to a temperature within the range of from about 160.degree. F. to about 190.degree. F. ### Claim 15 (depends on 13) The method of claim 13 comprising abrading the surface of the elongated substrate prior to the coating step. ### Claim 16 (depends on 15) The method of claim 15 in which the abrading step is carried out by washing the surface of the elongated substrate with water and aluminum oxide. ### Claim 17 (depends on 16) The method of claim 16 in which the abrading step is carried out by washing the surface of the elongated substrate with a mixture of water, aluminum oxide and glass beads. ### Claim 18 (depends on 13) The method of claim 13 in which the conductive solution is an aqueous saline solution. ### Claim 19 (depends on 18) The method of claim 18 in which the conductive solution comprises calcium chloride, lithium chloride and an ethoxylated nonyl phenol. ### Claim 20 (depends on 13) The method of claim 13 in which the elongated substrate is mounted on a pair of holding members which are offset from the center of gravity of the elongated substrate, thereby biasing the elongated substrate into contact with a grounding member. ### Claim 21 The method for electrostatically painting a plastic elongated substrate, the elongated substrate having a hard resinous outer surface and an inner core of insulating material, comprising heating an aqueous solution containing at least one salt to a temperature within the range of from about 180.degree. F. to about 210.degree. F., coating the elongated substrate with the aqueous solution, drying the elongated substrate, electrostatically painting the elongated substrate, an curing the paint on the elongated substrate. ### Claim 22 (depends on 1) The method of claim 1 in which the surface of the plastic elongated substrate comprises a thermoset polyester.