Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Patent
1998-09-10
2000-11-14
Dodson, Shelley A.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
424400, 442 59, 514642, 514844, 514847, A61K 700, A61K 3114, B32B 500
Patent
active
061466484
DESCRIPTION:
BRIEF SUMMARY
The invention concerns overall a novel composition for a softening lotion used in treating an absorbent paper product, such as a sheet of wadding cotton or tissue paper. This lotion is applied or impregnated onto at least one surface of the paper product and imparts a soft, slippery feel to the paper while being dry, i.e, without being greasy or oily. The invention also relates to the absorbent paper products wherein at least one surface is impregnated with such a lotion.
The invention is applicable to the manufacture of paper products such as domestic or sanitary papers. Among these in particular are papers entailing direct contact with the skin and repeated rubbing against the skin, for example disposable paper handkerchiefs, toilet paper or any other paper products for wiping the skin, for removing make-up, dry linen, and the like.
People afflicted with colds, influenza or various allergies causing nasal flow will wipe their noses frequently. Oftentimes such people's noses are irritated and red because of skin hypersensitization from this nasal flow. For practical reasons such people use conventional paper handkerchiefs available commercially in the form of boxed handkerchiefs, also called "facial" tissue, or folded handkerchiefs in small cases. Following several sequential nose wipings with these handkerchiefs, the skin at and around the nose becomes increasingly irritated, even inflamed and painful. Consequently, the surface of these handkerchiefs must be softened in order to limit, even suppress, any irritation caused by rubbing the handkerchief surface against the skin. Ideally the feeling should be the softness offered by a cloth handkerchief that has just been washed and pressed.
In another field, namely that of toilet paper, the same softness is required for repeated contacts with the skin taking place with simultaneous rubbing. In particular as concerns persons suffering from skin irritation in the anal region or in the case of hemorrhoids, a toilet paper with a somewhat rough feel will only further irritate the skin when this paper is pressed against this skin.
Accordingly, endeavors have been underway to generally soften the paper sheets or products such as the tissue paper webs using a variety of mechanical or chemical means.
As regards the mechanical means, techniques have been developed to improve in particular the appearance and the surface condition of the paper sheet by endowing it with a more slippery feel. In the case of handkerchiefs, illustratively, the sheet is calendered to flatten the crests formed when creping the sheet. Also the sheet surface may be frictionally treated in order to eliminate all roughnesses. However, these approaches often are insufficient. European Patent No. 0 029 269 describes a particular manufacturing procedure for such a sheet wherein the nature of the suspensions of fibers forming the various sheet layers as well as the combination of these layers among each other are significant factors for the desired velvety feel. However, this procedure limits the selection of appropriate fibers and entails constraints in the first stages of the wet process phase.
The expression "chemical means" covers any softening composition based on one or several chemical compounds. A distinction may be made between two categories of softening compositions. On one hand, the softening additives or compositions which are directly incorporated into the manufacturing pulp or composition or else are applied to a wet web of paper. And on the other hand, the softening compositions or lotions which are applied to the surface of a product or a sheet of paper in the dry state, i.e., where previous drying took place.
In the first case, these additives as a rule are used as fiber debonding agents and thereby the sheet so made is allowed to flexibilize. Many patents have been filed in this field, illustratively, EP-A-0 049 924; EP-B-0 347 176; U.S. Pat. No. 2,944,931; U.S. Pat. No. 5,415,737 and International Application No. WO 95/10661.
EP-A-0 049 924 discloses the incorporation of a quatern
REFERENCES:
patent: 2944931 (1960-07-01), Yang et al.
patent: 4481243 (1984-11-01), Allen
patent: 5279767 (1994-01-01), Phan et al.
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Bret Bruno
Leboeuf Jean-Francois
Dodson Shelley A.
Fort James France
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