Tissue products having a cooling sensation when contacted with skin

#Various different healthcare and cosmetic products are applied to the skin in order to provide various benefits. Such products can include, for instance, lotions, creams, moisturizers, and the like. In some circumstances, the products are intended to provide a cooling feeling or cooling sensation to the skin once applied. Existing products typically provide skin cooling by combining skin cooling agents with other substances.

#There are several different means to impart a cooling sensation to the skin, including using evaporation, neurosensory components, or physical agents such as phase change agents. One example of a cooling agent is menthol which provides cooling in the form of a physiological or neurosensory effect on nerve endings in the human body that sense temperature. The cooling sensation from menthol is not due to latent heat of evaporation but appears to be the result of direct stimulus on the cold receptors at the nerve endings.

#The use of phase change agents to impart cooling is discussed, for instance, in PCT International Publication No. WO 2006/007564 entitled “Cosmetic Compositions and Methods for Sensory Cooling”, which is incorporated herein by reference. In the '564 application, a skincare cosmetic composition is described in the form of a lotion that is intended for use in after-sun products, after-shave products, and body moisturizing products. The lotion is intended to create a cooling sensation on the skin by incorporating into the lotion components that absorb heat from the skin. In particular, ingredients are incorporated into the lotion that absorb heat from the skin and melt. The components have a relatively high heat of fusion which is defined in the '564 application as the heat absorbed by unit of mass of a solid chemical element at its melting point in order to convert the solid into a liquid at the same temperature. The '564 application states that the relatively high heat of fusion facilitates the absorption of heat from the skin to aid in melting the solid ingredient when applied to the skin, thereby cooling the skin temperature.

#A full and enabling disclosure of the present invention, including the best mode thereof to one skilled in the art, is set forth more particularly in the remainder of the specification, including reference to the accompanying figures, in which:

#FIG. 1 is a perspective view of one embodiment of a wiping product made in accordance with the present disclosure;

#FIG. 2 is a cross-sectional view of the wiping product illustrated in FIG. 1;

#Repeat use of reference characters in the present specification and drawings is intended to represent the same or analogous features or elements of the present invention.

#It is to be understood by one of ordinary skill in the art that the present discussion is a description of exemplary embodiments only, and is not intended as limiting the broader aspects of the present invention.

#Dry, as used herein, to describe tissue or wiping products means that the product is supplied without any moisture beyond the equilibrium moisture that is generally associated with the product. The “equilibrium moisture” is the moisture that the sheet contains when exposed to ambient conditions for extended periods of time. The equilibrium moisture within the sheet will not change with time at the same relative humidity and temperature. The dry products of the present invention will have equilibrium moisture contents typically of less than 15%, such as less than 10% such as from about 3% to about 8% under most ambient conditions that are encountered during routine use of the product.