JPH02127595A - Chemically treated paper product-towel and tissue - Google Patents

Abstract

PURPOSE: To obtain a cellulose-based fiber web having softness and absorbency and capable of giving an emollient towel and tissue by including a specified agent such as glucose glutamate or lauroamphoglycinate in the web. CONSTITUTION: The objective web is obtained by including 0.1-2 wt.% agent based on the web wherein the agent is selected from glucose glutamate, a high- molecular weight cationic quaternary homo(co)polymer derived from dimethyldiallylammonium salt, lauroamphoglycinate and a triquaternary phospholipid complex derived from a fatty acid. The glucose glutamate is usually obtained by condensation of an amino acid with reducing sugar. The above- mentioned agent is preferably coated by spraying, coating-roll casting or gravure.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention provides a smooth and softening material for human skin while essentially retaining its moisture absorbency and strength when used for wiping and drying. 6m011 ien t ) Relating to a soft, absorbent and lofty cellulosic fibrous web that provides benefits. The chemicals used in the present invention are:
(1) Glucose glutamate, which is a condensation product of amino acids and reducing sugars; (2) high molecular weight cationic quaternary homopolymer or copolymer; (3) lauroamphoglycinate (
lauroam phoglycinate) or (4
) Quaternary phospholipid complexes derived from fatty acids (Lriqua
ternary phospholipid co+n
plex).

Background of the Prior Art It has been suggested that treating a cellulosic fibrous web with lanolin imparts a soft texture to the web. For example, U.S. Patent No. 2 of Wemyss et al.
, 877,115 and Yang, US Pat. No. 2,944,931. For other solid fats, see BritL's U.S. Patent No. 3,
See No. 305,392. Such treatments, however, have shown that the water absorbency of cellulosic webs is greatly reduced by the application of these fat-type materials, and that the webs are no longer capable of wiping or drying on moist skin. It has the disadvantage that it cannot be carried out.

SUMMARY OF THE INVENTION Rather than imparting a soft texture to a cellulosic web, the present invention provides a softening effect on human skin by wiping the cellulosic web while retaining the drying and strength properties of the untreated web. Its purpose is to give a smooth or smooth effect. In many settings, such as hospitals and clinics, people are often required to wash and dry their hands. This can be irritating to the skin, especially in cold weather. Also, people with the common cold often have to use facial tissues. Also, people suffering from diarrhea must use large amounts of toilet tissue. It has been found that repeated wiping with treated toilet tissue conditions the entire genital area so that it remains non-irritating.

Similarly, the method of the present invention ensures that the skin of the nose remains velvety soft even after repeated wiping.
A soft texture is achieved after using the aceal treatment.

According to the present invention, high molecular weight cationic quaternary homopolymers and copolymers derived from glucose glutamate, dimethyldiallylammonium salt, which is a condensation product of amino acids and reducing sugars, nonionic surfactants and Skin for drying or wiping the skin by treating a soft absorbent cellulosic web with a formulation of amphoteric lauroamphoglycinate containing phosphoric acid or a triquaternary phosphate lipid complex based on fatty acids. It has been found that water absorption properties can be essentially retained while imparting smoothing properties to the web. Products made from such webs satisfactorily perform the product's primary function of wiping or drying the skin, while at the same time providing the benefit of transporting drugs from the cellulosic fibrous web to the skin and softening it. Demonstrate your ability to give. In contrast, it is treated with lanolin.
:The web is significantly less capable of producing the desired benefits;
In some cases, it may be perceived as an irritant or cause itching. This is not only due to the fact that adults are allergic to lanolin, but also because of the fact that Jacobi et al.
31.472, the dryness of the skin is not caused by the loss of lanolin, but by the loss of the water-soluble components therein.

Glucose glutamate, a condensate of amino acids and reducing sugars, is applied to the cellulosic fiber web in an amount of 0.1 to 2% by weight of the web. The residual presence of small amounts of glucose glutamate on the skin, after drying the hands, significantly helps restore and maintain the moisture balance necessary for healthy skin. This condensation product is disclosed and described in detail in US Pat. No. 3,231,472, which is incorporated by reference. As already acknowledged,
The fact that this polymer is water soluble is what distinguishes the present invention from prior art lanolin treatments.

This high molecular weight polymer is manufactured by Dow Corning (Dow C
It is commercially available under the trade name WICKENOL from Wicken Products, a wholly owned subsidiary of Orning.

High molecular weight cationic quaternary homopolymers and copolymers derived from dimethyl diallylammonium salts are applied to the web of cellulosic fibers in an amount of 0.1 to 2% by weight of the web. These polymers are described in U.S. Patent No. 3,288.
．． No. 770 and No. 3,412.019, which are disclosed and described in detail, and are incorporated by reference. The term "high molecular weight cationic quaternary homopolymers and copolymers derived from dimethyl diallylammonium salts" refers to the water-soluble polymers disclosed in that patent.

As already recognized, the fact that this polymer is water-soluble is what distinguishes the process of the present invention from the lanolin processes of the prior art. Indeed, as far as the applicant is aware, U.S. Pat. No. 3,996,143 for use in cosmetic products such as shampoos; U.S. Pat. This polymer is disclosed in U.S. Pat. No. 3,986,825 as a dyeing composition and in U.S. Pat. No. 3,912,808 as a hair waving composition.
It was never considered a moisturizer.

This high molecular weight polymer is commercially available from Calgon, a wholly owned subsidiary of Merck, under the trade name MERQUAT.

Lauroamphoglycine-1. is 0.1 to 2 of the web.
% by weight applied to the web of cellulosic fibers.

Lauroamphoglinates are generally amphoteric organic compounds according to the following formula: The fact that this polymer is water soluble distinguishes the process of the present invention from the lanolin processes of the prior art. Indeed, to the inventor's knowledge, lauroamphoglycinate has never been considered a skin moisturizer.

The triquaternary phospholipid complex is applied to the cellulosic fiber web in an amount of 0.1 to 2% by weight of the web. These phospholipid complexes are disclosed and described in detail in US Pat. No. 4,209,449, which is incorporated by reference.

°°The expression “triquaternary phospholipid complex” refers to stearic acid,
Refers to compounds as disclosed in that patent derived from fatty acids such as lauric acid, linoleic acid and myristic acid.

As can be readily appreciated, the fact that this polymer is water soluble is what distinguishes the process of the present invention from the lanolin processes of the prior art. Although the polymer has been recognized as a skin moisturizer, to our knowledge it has never been used on a tinny. This high molecular weight polymer is Mona (M
ona) Industrial company to MONAQUAT
and available under the trademark MONATERGE. Stearic acid-based complexes include stearamidopropyl PG-dimonium chloride phosphate under the name CTFA.

For the purpose of illustrating the detailed description of the invention, 549/m” (2
A web of paper having a basis weight of 32 lbs., 880 sq. ft. paper roll) is unwound from the stock roll and grained, but before the slitting, folding, cutting, stacking and packaging steps. processed in the finishing process. A treatment solution consisting of an active ingredient dissolved in water, from 0.034 to 1 as the glucose glutame-1, cationic quaternary homopolymer, lauroamphoglycinate or triquaternary phospholipid complex; .

086 g/m” (0.02 to 0.64 per series
lb) or in an amount to provide a loading of 0.1 to 2.0% by weight of the web. Scott
) Another example illustrating the invention is 279/m2 (16 per series
A 2.880 square foot paper web having a basis weight of 1.25 lbs.) was processed at a site similar to that described above. The treatment liquid containing the active ingredient dissolved in water has a concentration of 0.017 to 0.543 y/m” (0.01 to 0.3
2 lbs./ream) or 0.1 to 2% by weight of the web.

Any coating technique known in the art may be used as long as it does not unduly compress the web and distributes the liquid uniformly over the paper in the desired proportions. These application techniques include spraying, roll casting, and gravure printing. If the compression caused by gravure printing is deemed too great for the final product, this step can be performed before the graining bulking step. The amount of compression that can be tolerated depends on the initial loftiness of the web, consumer expectations for loftiness, and the patterning that can be achieved by gravure roll methods.
It is influenced by a number of variables such as the perceived need for clprir+ting). According to the inventors, it has been found that user-perceived convenience is best achieved by spraying the treatment liquid onto the web.

In the following examples, the inventors described a doctored kiss roll.
The method described herein was used. In this method, the path of the paper web is directed toward a coating roll that rotates in the same direction as the paper travels. This roll, which has a smooth surface, for example a polished chrome surface, rotates partially immersed in the bath of the liquid to be applied. As the roll rotates, it rolls up a liquid layer on its surface. The thickness of this layer is determined by the viscosity of the liquid. This layer is then adjusted to the desired thickness by scraping off the excess from the roll. The paper, moving faster than the surface of the roll, then wipes the liquid layer from the roll.

The speed of application for a given paper speed and liquid is adjusted by the rotational speed of the coating roll; the angle of winding of the paper on the coating roll (contact with the roll); and adjustment of the type and settings of the doctoring device. . These adjustments are made as necessary to deliver the desired amount of liquid to the web for a given web speed and liquid.

Example 1 31.2 bonds (1
A sheet of paper web having a basis weight of 42.9 g per square shoulder) was sprayed on one side with a Winkanol formulation containing 3.75% glucose glutamate in solution and 0.27% by weight of the web. A lotion-treated sheet containing glucose glutamate was prepared.

Example 2 33.1 lbs. per 2880 sq. ft.
A Icolac lanolin (RRT-1) containing 5% lanolin in solution was placed on one side of a sheet of paper web having a basis weight of 56.29 per sq. m.
-200A) to produce a lotion-treated sheet containing 0.27% lanolin by weight of the web.

Example 3 33.5 bonds (1
A sheet of paper web having a basis weight of 56.8 g/sq m) is sprayed on one side with Mercato 100 containing 4% by weight of the high molecular weight polymer of the invention in solution, and 0.5% of the web is sprayed on one side. Lotion treatment containing 2% by weight of the polymer (lo
A t 1onized) sheet was produced.

Example 4 32.1 pounds per 2880 square foot series
A sheet of paper web having a basis weight of 54.5 g/sq m) was sprayed on one side with Mercato 100 containing 2.4% by weight of the high molecular weight polymer of the invention in solution and A lotion treated sheet containing 0.17% by weight of the polymer was produced.

Example 5 33.1 pounds per 2880 square foot series
A 1colac lanolin (RRT-1) containing 5% lanolin in solution was placed on one side of a sheet of paper web having a basis weight of 56.29 per sq. m.
-200A) to produce a lotion geography sheet containing 0.27% lanolin by weight of the web.

Towels fabricated from sheets made according to Examples 1-5 above and control towels were tested by a panel of nurses by evaluating the condition of their hands after repeatedly drying them. . Sensory perception is, of course, subjective. However, the results are believed to truly grade the towels in relation to each other.

The test method asked participants to compare their condition after drying their hands four times with a control towel to the condition they felt after drying their hands four times with a test towel. The control towels consisted of untreated paper towels sold under the Scotto trademark as 1 soc-fold towels. All test towels were gentler on participants' hands than the control towels, as revealed by the percentage of their hands that felt dry or dry after drying. there were. The time required to dry hands on the control and test towels was the same. On average, drying time was 16 seconds. The test procedure consists of the following washing and drying sequence: Wash twice and dry with a control towel, and repeat once with the test towel: Repeat the washing and drying sequence four times with the control towel, then test. Do it four times with a towel: and finally do it five times with a test towel.

Towel manufactured according to Example 1 (Wiccanol)
In a study, at the end of the study, 58% of participants said their hands felt better, 17% said they felt the same, and 25% said they felt worse.

In a test of towels made according to Example 2 (Lanolin), at the end of the study 27% of participants said their hands felt better, 9% said they felt the same, and 64% felt worse. I said I feel like I did.

In a test of towels made according to Example 3, at the end of the test two-thirds of the participants said their hands felt good, one-third said they felt the same, and those who said they felt worse There wasn't. For the towel made according to Example 4, 46% of participants said their hands felt good;
38% said they felt the same, and 15% said they felt worse.

In a test of towels made according to Example 5 (Lanolin), at the end of the study 27% of participants said their hands felt good, 9% said they felt the same, and 64
% said they felt worse.

Example 6 32.8 bonds (1
A quantity of alcolac D V-1995 containing primarily lauroamphoglycinate as described above along with phosphoric acid and a nonionic surfactant was applied to a sheet of paper web having a basis weight of 55.6 g per square shoulder. The lotion treatment (lotionized) containing 0.64% by weight of the web of lauroamphoglinate
) sheet was manufactured.

Example 7 (A) A sheet of paper web having a basis weight of 32°8 bonds per 2880 square feet (55.69 per square meter) was coated with a triquaternary phospholipid complex derived from lauric acid. A quantity of Montage B-328 containing the complex was applied in the manner described above to produce a loionized sheet containing 0.81% of the complex by weight of the web. The sheets were then processed into C-fold towels.

(B) A sheet of paper web having a basis weight of 32°8 bonds per series of 2880 square feet (55.6 g per square meter) containing a triquaternary phospholipid complex derived from lauric acid. Amount of Montage B-321 was applied in the manner described above to produce a lotion treated sheet containing 0.40% of the complex by weight of the web. Then the sheet is C
- Processed into folded towels.

Examples 6 and 7 compare towels treated according to the present invention with untreated towels to identify the differences and convenience;
and demonstrates one's ability to recognize that the functional properties of treated towels remain unchanged. These products fully perform the product's primary function, which is to wipe or dry the skin, while at the same time exhibiting the ability to transfer drugs from the cellulosic fibrous web to the skin and provide softening benefits.

The test method used was to select a panel of normal, healthy individuals, and this panel (consisting of 11 panel members) was tested with treated towels and Scott branded 150c.
- Involves observing whether differences in convenience can be perceived between folded towels, each towel marked with a code number so that the identity of the sample is unknown to each panel member. provided to the panel. The survey was conducted confidentially on each panel page to avoid interaction with other panel members. Each panel member washed their hands with lukewarm tap water and mild liquid soap and then dried their hands with an untreated towel. Subjects were specifically aware that these towels were regular, untreated towels and that these towels were being used as a control. Subjects were then asked to wash their hands again using the same procedure, and this time to dry their hands with an unknown towel with a code number. Placebo samples containing untreated towels are included between the coded samples. After the 11 panel members completed their evaluations, the combined scores are shown in Tables 1 and 2 below. Each sample was graded on a scale of 0 to 10 with a maximum score of 110. Panel members were asked to grade treated and untreated samples with respect to skin benefit.

In addition to subjective functional evaluation of treated vs. untreated towels (particularly regarding basic towel properties of strength and absorbency),
Objective laboratory evaluation of the samples was also performed. These results show that when comparing treated towels to untreated towels,
It was shown that the physical properties are essentially unchanged.

Chapter ■ Table: Untreated towel used as a bracipo lauroamhogrinate 46 Untreated towel used as a placipo 22 Montage
B-32832 Montage B-32144 According to the table above, the Bracibo sample, which is clearly an unknown sample, has a poor performance when considering skin comfort and functionality.
Both show significantly lower grades than the treated samples.

Claims (1)

[Claims] 1. High molecular weight cationic quaternary homopolymers and copolymers derived from glucose glutamate, dimethyldiallylammonium salt, triquaternary phospholipids derived from lauroamphoglycinate and fatty acids A web of cellulosic fibers containing at least one drug selected from the group consisting of complexes in an amount of 0.1 to 2% by weight of the web. 2. A towel for drying the skin made of the web according to claim 1. 3. Toilet tissue manufactured from the web according to claim 1. 4. Facial tissue manufactured from the web according to claim 1.