发明名称 |
Multi-stage processes for coating substrates with a first powder coating and a second powder coating |
摘要 |
Processes for coating metal or polymeric substrates are provided which include the steps of: (a) applying a first powder coating composition to a surface of the substrate; (b) applying a first infrared radiation at a power density of 30 kilowatts per meter squared or less and optionally a first air simultaneously to the first coating composition for a first period of at least about 90 seconds such that a sintered first coating is formed upon the surface of the substrate; (c) applying a second powder coating composition over the first coating; and (d) applying a second infrared radiation at a power density of 30 kilowatts per meter squared or less and a second air at an air velocity ranging from about 0.5 to about 13 meters per second simultaneously to the second coating composition for a second period of at least about 2 minutes, such that a powder layered system is formed upon the surface of the substrate.
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申请公布号 |
US6596347(B2) |
申请公布日期 |
2003.07.22 |
申请号 |
US20010969480 |
申请日期 |
2001.10.02 |
申请人 |
PPG INDUSTRIES OHIO, INC. |
发明人 |
EMCH DONALDSON J. |
分类号 |
B05D3/02;B05D3/04;B05D7/00;B05D7/14;F26B3/28;(IPC1-7):B05D3/02;B05D3/06;B05P1/38;C08J7/18;B29C71/02;B29C71/04 |
主分类号 |
B05D3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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