JP2747496B2 - Chemically treated paper products-towels and tissues - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION Technical Field of the Invention The present invention relates to a method for lubricating human skin while essentially retaining its water absorption and strength when used for wiping and drying. A soft, absorbent and bulky cellulosic fibrous web that imparts a softening and emollient effect. The chemicals used in the present invention include (1) glucose glutamate, a condensation product of an amino acid and a reducing sugar, or (2) lauroamphoglycin (lauroamphoglycin).
ate).

Background of the Related Art It has been suggested that treatment of a cellulosic fibrous web with lanolin gives a soft texture to the web. For example, U.S. Pat. No. 2,877,
See U.S. Pat. No. 115 and Young U.S. Pat. No. 2,944,931. For other solid fats, Brit
See U.S. Pat. No. 3,305,392 to t). However, such treatments have the disadvantage that the moisture absorption of the cellulosic web is greatly reduced by the application of these fat-type materials and the web can no longer fulfill its function of wiping or drying on moist skin. have.

SUMMARY OF THE INVENTION The present invention provides a softening property to human skin by wiping with a cellulosic web while maintaining the dry and strength properties of the untreated web, rather than imparting a soft texture to the cellulosic web. Its purpose is to provide a smooth or smooth effect. In many settings, such as hospitals and clinics, people often need to wash and dry their hands. This can irritate the skin, especially in cold weather. Also, people who have a common cold often have to use facial tissue. People with diarrhea must also use large amounts of toilet tissue. It has been found that the perineal area is conditioned such that repeated wiping with the treated toilet tissue maintains a non-irritating condition. Similarly, a soft texture is achieved after using a facial treatment of the type of the present invention, such that the nose skin remains velvety and soft after repeated wiping.

According to the present invention, by treating a soft absorbent cellulosic web with amphoteric lauroamphoglycinate containing glucose glutamate or a nonionic surfactant and phosphoric acid, which is a condensation product of an amino acid and a reducing sugar, It has been found that moisture absorption can be essentially retained while imparting skin smoothing properties to the skin for drying or wiping. Products made from such webs perform the primary function of the product, wiping or drying the skin, while at the same time having the benefit of transferring and softening the drug from the cellulosic fibrous web to the skin. Demonstrate the ability to give. In contrast, webs treated with lanolin are significantly inferior in producing the desired benefits, and in some cases may be perceived as irritants or as itchy. This is not only due to the fact that some people are allergic to lanolin, but also to US Pat. No. 3,231,472 to Jacobi et al.
This is because, as observed by No. 1, the drying of the skin does not occur by the loss of lanolin, but by the loss of the water-soluble components therein.

Glucose glutamate, a condensate of an amino acid and a reducing sugar, is applied to a web of cellulosic fibers in an amount of 0.1 to 2% by weight of the web. The presence of small amounts of glucose glutamate remaining on the skin significantly helps to restore and maintain the necessary water balance for healthy skin after drying the hands. Since this condensation product is disclosed and described in detail in U.S. Pat.No. 3,231,472,
Please refer to it for reference. As already noted, the fact that this polymer is water-soluble completely distinguishes the treatment of the present invention from the prior art lanolin treatment. The high-molecular-weight polymer is available from Wicken Pro, a wholly owned subsidiary of Dow Corning.
ducts) under the trade name WICKENOL.

Lauroamhoglycinate is applied to the web of cellulosic fibers in an amount of 0.1 to 2% by weight of the web. Lauroamhoglycinate generally has the formula: Is an amphoteric organic compound according to The fact that this polymer is water-soluble completely distinguishes the treatment of the present invention from the prior art lanolin treatment. Indeed, to the inventors' knowledge, lauroamhoglycinate has never been considered a skin moisturizer.

DETAILED DESCRIPTION OF THE INVENTION For purposes of illustrating the invention, 54 g / m ² (2,880
A web of paper having a basis weight of 32 pounds per square foot of paper) is finished after being unwound and grained from the stock roll, but before the slitching, folding, cutting and stacking and packaging steps. Processed in the process. The treatment solution consisting of the active ingredient dissolved in water,
The glucose glutamate or lauroamphoglycinate is applied in an amount to provide a loading of 0.034 to 1.086 g / m ² (0.02 to 0.64 pounds per series) or 0.1 to 2.0% by weight of the web. In the case of a toilet tissue, such as Scott COTTONELLE or a two-layer facial, another example illustrating the present invention has a basis weight of 27 g / m ² (16 pounds per series).
A 2,880 square foot paper web may be processed at a site similar to that described above. The treatment liquid containing the active ingredient dissolved in water is applied in an amount such that a 0.017 to 0.543 g / m ² (0.01 to 0.32 lb / ream) or 0.1 to 2% by weight of the web is added. .

Conventionally known coating techniques can be used that do not over compress the web and that evenly distribute the liquid in the desired proportions on the paper. These application techniques include spraying, coating roll casting, and gravure printing. If the compression caused by the gravure printing process is deemed too large for the final product, this step can be performed before the bulking step by graining. The amount of compression that can be tolerated depends on the initial bulkiness of the web, the expectations of the consumer who consider it to be bulky, and the pattern printing that can be achieved by the gravure roll process.
g) is influenced by a number of variables, such as the need to be felt. According to the inventor, it has been found that the convenience perceived by the user is best achieved by spraying the treatment liquid onto the web.

In the following examples, the present inventors used the method described as the doctor device kiss roll method. In this method, the path of the paper web is in the direction of the coating roll, which rotates in the same direction as the paper travels. This roll, which has a smooth surface, for example a surface of polished chromium, rotates partially immersed in a 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. The excess amount of this layer is then adjusted to the desired thickness by scraping off 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 and liquid is adjusted by adjusting the rotation speed of the coating roll; the angle of wrapping (contact with the roll) of the paper on the coating roll; and the type and setting of the doctor device. These adjustments are made as needed so that for a given web speed and liquid, the desired amount of liquid is delivered to the web.

Example 1 31.2 pounds (1 square meter) per 2880 square feet
One side of a sheet of paper web having a basis weight of 42.9 g) is sprayed with a Wickenol formulation containing 3.75% glucose glutamate in solution, and a lotion treatment containing 0.27% glucose glutamate by weight of the web ( lotionized) sheet.

Example 2 (Control) 33.1 pounds per square foot of 2880 square feet
One side of a sheet of paper web having a basis weight of 56.2 g) is sprayed with Alcolac lanolin (RRT-1-200A) containing 5% lanolin in solution and 0.27 weight of the web % Of lanolin was prepared.

Example 3 (control) 33.1 pounds per square foot of 2880 square feet
One side of a sheet of paper web having a basis weight of 56.2 g) is sprayed with Alcolac lanolin (RRT-1-200A) containing 5% lanolin in solution and 0.27 weight of the web % Of lanolin was prepared.

Towels processed from sheets made according to Examples 1-3 above and control towels were tested by a panel of nurses by assessing the condition of their hands after repeated drying of their hands. . Sensory perception is, of course, subjective. But the result is believed to truly rank the towels in a mutual relationship. The test method required participants to compare the condition after drying their hands four times with a control towel and the condition after drying their hands four times with a test towel. The control towel consisted of an untreated paper towel sold under the Scott trademark as a 150C-folded towel. All test towels were more gentle to the participants' hands than the control towels, as evidenced by the percentage of their hands that felt equal or better after drying. Was.
The time required to dry hands with the control and test towels was the same. On average, the drying time was 16 seconds.
The test procedure consists of the following washing and drying sequence:
Wash once and dry with control towel, repeat once with test towel: repeat the washing and drying sequence four times with control towel, then with test towel four times; and finally with test towel five times .

In a test of a towel (Witzkenol) made according to Example 1, 58% of the participants said that their hands felt good at the end of the test, 17% said they felt equally, and 25% worsened I said I felt it.

In testing towels made in accordance with Example 2 (lanolin), at the end of the test, 27% of participants said their hands felt good, 9% said they felt equally, and 64% were worse I said I felt it.

In a test of a towel made according to Example 3 (lanolin), at the end of the test 27% of the participants said that their hands felt good, 9% said they felt identical, and 64%
Said he felt worse.

Example 4 32.8 pounds per square foot of 2880 square feet
Per sheet of paper with a basis weight of 55.6 g)
A fixed amount of alcohola containing mainly lauroamphoglycinate together with phosphoric acid and a nonionic surfactant
c) DV-1995 was applied in the manner described above to produce a lotionized sheet containing 0.64% by weight of the web, lauroamphoglycinate.

Example 4 compares towels treated according to the present invention with untreated towels to identify the differences and convenience and recognizes that the functional properties of the treated towels remain unchanged. It demonstrates the ability of those who do. These products exhibit the ability to perform the major function of the product, wiping or drying the skin, while providing the benefit of transferring and softening the drug from the cellulosic fibrous web to the skin.

The test method used selected a panel of normal and healthy persons, and this panel (consisting of 11 panelists) was convenient between treated towels and Scott brand 150C-folded towels. Includes observing whether differences can be perceived, and each towel was provided on the panel with a code number so that the identity of the sample was not known to each panel member. The survey was conducted confidentially for each panel member so that there was no interaction with other panel members. Each panel member wash hands with warm tap water and mild liquid soap,
The hands were then dried with an untreated towel. The subject was particularly aware that these towels were ordinary untreated towels and that these towels were used as controls. The subject was then asked to wash his / her hands again in the same manner, and this time to ask to dry his hands with an unknown towel with a code number. Placebo containing untreated towels between code numbered samples (plac
ebo) The sample was included. After the 11 panelists completed the evaluation, the total of their scores was
It is shown in the table. Each sample was rated on a scale of 0 to 10 with a maximum rating of 110. Panel members were asked to grade treated and untreated samples for skin benefit.

In addition to the subjective performance evaluation of treated versus untreated towels (particularly with respect to the basic towel properties of strength and absorbency), an objective laboratory evaluation of the sample was also made. These results indicated that the physical properties were essentially unchanged when the treated towels were compared to the untreated towels.

The table above clearly shows that the placebo samples, as unknowns, are all significantly lower than the treated samples, when considering the comfort and functionality to the skin.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Morris El Smith 08045 Loneside Tailman Aveny, New Jersey, United States 307 ) Inventor Nathan A. Edelson 19004, Pennsylvania, USA Barrasign Wide West Amherst Road 3 (56) References JP-A-58-156098 (JP, A) Patent 4766015 (US, A) US Patent 3231472 (US, A)

Claims (4)

(57) [Claims] A web of cellulosic fibers comprising at least one drug selected from the group consisting of glucose glutamate and lauroamphoglycinate in an amount of 0.1 to 2% by weight of the web. 2. A towel for drying skin made of the web according to claim 1. 3. A toilet tissue made from the web according to claim 1. 4. A facial tissue made from the web according to claim 1.