Abstract: A purge concentrate for purging paint spraying and other coating equipment has about 20%-60% by weight water; about 10%-40% by weight of an active solvent; about 10%-50% by weight of a co-solvent; about 1-9% by weight of a penetrant; and about 0.2-2.0% by weight wetting agent. It need not be heated to the curing temperature of heat curing paints and thus purges these paints more effectively.
Type:
Grant
Filed:
April 30, 1998
Date of Patent:
October 26, 1999
Assignee:
Dalco Industries, Ltd.
Inventors:
Richard E. Knipe, Jr., Savarimuthu M. Jacob, Sheldon Green
Abstract: An apparatus, method and purge concentrate are capable of purging water-based and non-water-based paints and other coatings from automated and manual equipment using non-VOC containing aqueous purge solutions. Purge solutions of the invention contain water, detergent builder and wetting agents. The solution is maintained at a selected concentration and at a selected elevated temperature range by continuously recirculating the solution through the automated coating equipment. For manual equipment the solution is set at the correct concentration and maintained at the correct temperature range. For an automated system, spent purge solution can be reconditioned and recirculated to avoid waste.
Type:
Grant
Filed:
October 15, 1997
Date of Patent:
December 29, 1998
Assignee:
DALCO Industries, Ltd.
Inventors:
Richard E. Knipe, Jr., Savarimuthu M. Jacob, Thomas Mancini
Abstract: An apparatus, method and purge concentrate are capable of purging water-based and non-water-based paints and other coatings from automated and manual equipment using non-VOC containing aqueous purge solutions. Purge solutions of the invention contain water, detergent builder and wetting agents. The solution is maintained at a selected concentration and at a selected elevated temperature range by continuously recirculating the solution through the automated coating equipment. For manual equipment the solution is set at the correct concentration and maintained at the correct temperature range. For an automated system, spent purge solutions can be reconditioned and recirculated to avoid waste.
Type:
Grant
Filed:
January 16, 1997
Date of Patent:
December 30, 1997
Assignee:
Dalco Industries, Ltd.
Inventors:
Richard E. Knipe, Jr., Savarimuthu M. Jacob, Thomas Mancini
Abstract: An apparatus, method and purge concentrate are capable of purging water-based and non-water-based paints and other coatings from automated and manual equipment using non-VOC containing aqueous purge solutions. Purge solutions of the invention contain water, detergent builder and wetting agents. The solution is maintained at a selected concentration and at a selected elevated temperature range by continuously recirculating the solution through the automated coating equipment. For manual equipment the solution is set at the correct concentration and maintained at the correct temperature range. For an automated system, spent purge solution can be reconditioned and recirculated to avoid waste.
Type:
Grant
Filed:
December 29, 1995
Date of Patent:
May 27, 1997
Assignee:
Dalco Industries, Ltd.
Inventors:
Richard E. Knipe, Jr., Savarimuthu M. Jacob, Thomas Mancini