Patent ID: 6686565
Filing Date: 2004-02-03
Classification: H01L,H05K

Abstract:
A method of uniformly or substantially uniformly heating at least one surface of a substrate, the method comprising the steps of:a) supporting the substrate; b) using two convector heaters to generate a heated air flow, each convector heater having at least one elongate outlet from which heated air of the heated air flow is output, each said at least one elongate outlet being positioned to face the other at least one elongate outlet and being in parallel or substantially in parallel with the substrate, and; c) directing the heated air flow along a flow path towards a first surface of the substrate to heat a strip of said first surface; and d) controlling the relative flow rates of the heaters to move the flow path of the heated air flow in a direction transverse to the direction in which the heated air flow approaches and impinges on the substrate until the temperature of the whole or substantially the whole first surface of the substrate has been uniformly or substantially uniformly raised.