American Laundry Machinery Inc.

American Textile Processing, L.l.c.

David R McClain

Ewart H Shattuck

A process and apparatus for treating fabric articles containing cellulosic material to provide control shrinkage and durable-press properties for the fabric includes a system for exposing the fabric to an aerosol mist that uniformly supplies a liquid cellulosic cross linking agent and moisture to the fabric. Optionally, a liquid catalyst can be incorporated in the aerosol mist, whereby each droplet of the aerosol mist contains liquid cellulosic cross linking agent, moisture and catalyst promoting cross linking agent. Exposure of the fabric to the aerosol mist containing moisture, cross linking agent and catalyst, the fabric is cross linked at an elevated temperature and subsequently cleaned of cross linking chemicals. The fabric can also be treated using an aerosol mist containing other liquid chemical agents. Equipment for carrying out the process essentially includes a chamber having aerosol mist generating nozzles in communication with the interior of the chamber and appropriate supplies for compressed air and liquid chemicals in communication with the nozzles. Appropriate ventilating and heating systems are associated with the chamber.

Process and apparatus for treating cellulosic fiber-containing fabric

An apparatus for treating cellulosic fiber containing fabrics to improve durable press and shrinkage resistance includes using steam as a vehicle to supply vaporized liquid cellulosic cross-linking agent and vaporized liquid catalyst to a reaction chamber in which the fabric articles are treated by cross-linking the cellulose. Normally liquid cross-linking agent and liquid catalysts are directly injected into a stream of treating steam to cause vaporization of the cross-linking agent and catalyst. Alternatively, a steam driven ejector type pump is utilized to entrain and vaporize liquid cross-linking agent and liquid catalyst in a flowing stream of steam supplied to the reaction chamber. Gaseous ammonia may also be supplied to the reaction chamber to condition the cellulosic material containing fabric before cross-linking.

Apparatus for treating cellulosic fiber-containing fabric to improve

A process and apparatus for treating fabric articles containing cellulosic material to provide control shrinkage and durable-press properties for the fabric includes a system for exposing the fabric to an aerosol mist that uniformly supplies a liquid cellulosic cross linking agent and moisture to the fabric at essentially room temperature. Optionally, a liquid catalyst can be incorporated in the aerosol mist, whereby each droplet of the aerosol mist contains liquid cellulosic cross linking agent, moisture and catalyst promoting cross linking agent. Following exposure of the fabric to the aerosol mist containing moisture, cross linking agent and catalyst, the fabric is cross linked at an elevated temperature and subsequently cleaned of cross linking chemicals. The fabric can also be treated using an aerosol mist containing other liquid chemical agents. Equipment for carrying out the process essentially includes a chamber having aerosol mist generating nozzles in communication with the interior of the chamber and appropriate supplies for compressed air and liquid chemicals in communication with the nozzles. Appropriate ventilating and heating systems are associated with the chamber.

Process for treating cellulosic fiber-containing fabric

A process and apparatus for treating cellulosic fiber containing fabrics to improve durable press and shrinkage resistance includes using steam as a vehicle to supply vaporized liquid cellulosic cross-linking agent and vaporized liquid catalyst to a reaction chamber in which the fabric articles are treated by cross-linking the cellulose. Normally liquid cross-linking agent and liquid catalysts are directly injected into a stream of treating steam to cause vaporization of the cross-linking agent and catalyst. Alternatively, a steam driven ejector type pump is utilized to entrain and vaporize liquid cross-linking agent and liquid catalyst in a flowing stream of steam supplied to the reaction chamber. Gaseous ammonia may also be supplied to the reaction chamber to condition the cellulosic material containing fabric before cross-linking.

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Williamsburg, OH, United States of America

David R McClain