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Browse Prior Art Database

Non-combustible Flux For Printed Circuit Boards

IP.com Disclosure Number: IPCOM000098239D
Original Publication Date: 1960-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Pringle, EW: AUTHOR

Abstract

A combustion or explosion hazard is created when commercial solder fluxes are sprayed on printed circuit boards in preparation for soldering in a flowsolder machine.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Non-combustible Flux For Printed Circuit Boards

A combustion or explosion hazard is created when commercial solder fluxes are sprayed on printed circuit boards in preparation for soldering in a flowsolder machine.

Commercial fluxes used for printed circuit work are basically a solution of rosin dissolved in alcohol. They are classed as highly flammable liquids. Adding a dilutent such as Du Pont Freon-TF solvent to the flux substantially raises the flash point. The Freon-TF solvent evaporates at the same temperature as the alcohol, minimizes combustion and explosion hazards, and has no apparent detrimental effects on the fluxing action.

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