Abstract: The invention relates to preserving the properties of active particles through use of an encapsulant which may be removable. The encapsulant may protect the active particles against premature deactivation. If desired, the encapsulant may be removed to rejuvenate the active particles. Various processes can be implemented to introduce encapsulated particles to embedding substances which may be used in various products.

Abstract: The invention relates woven and knit materials with an incorporated particulate solid and to a process for producing woven materials incorporated with a particulate solid. The process comprises: entraining a particulate solid in a gaseous carrier; disposing one face of a woven material in the path of a stream of said gaseous carrier and entrained particulate solid; maintaining a pressure drop across the woven material from said one face to the other face of said material, thereby to obtain a woven material with at least some of the entrained particulate solid in the gaseous carrier; and fixing the incorporated particulate solid.

Abstract: The present invention relates to methods for imprinting solid particles onto materials that enhance the performance characteristics, such as the odor adsorption capacity, of the material. The present invention uses a xerographic imprinting method to apply a toner formulation to the material. The toner formulation typically includes solid particles (e.g., activated carbon), binding agents, and additives. Using this method, a specific pattern can be imprinted onto the material. The present invention can also use a Gravure method to imprint performance enhancing solid particles onto a material. This method advantageously provides precise control over the volume of mixture (e.g., solid particles and binding agent) impressed onto the material. In addition, this method can imprint specific patterns of mixture onto the material.