JPS6168042A - Aroma imparting agent for sanitary article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a fragrance imparting agent for sanitary products.

[Prior art]

It has been known for some time that sanitary products such as sanitary napkins and disposable diapers can be positively scented to mask bad odors by interposing fragrance-containing absorbents into the sanitary products. A gel-like fragrance imparting agent has also been proposed in which a polymer compound is used as an all-gel base, a fragrance is emulsified and dispersed in a water gel, and the fragrance is volatilized into the entire atmosphere as the water evaporates to emit a fragrance.

[Problem that the invention seeks to solve]

However, such conventional fragrance imparting agents for sanitary products are unable to maintain stable release of fragrance for a long period of time due to constant volatilization of the fragrance. There was a fear that it would come. In order to improve this point, it may be possible to completely coat the above fragrance imparting agent with a natural or synthetic polymer compound, but it is practically difficult to obtain a sticky effect when applied to feminine hygiene products such as sanitary napkins. there were.

The present invention was made in view of the above circumstances, and its purpose is to dispose of sanitary products such as sanitary napkins and disposable diapers only when necessary, for example, when menstrual blood, urine, etc. are excreted. To provide a fragrance-imparting agent for sanitary products, which allows the fragrance to volatilize and emit fragrance during the period of time.

[Means and effects for solving the problems] The fragrance imparting agent for sanitary products of the present invention is formed by encapsulating a fragrance in a water-insoluble polymer powder having a high degree of water swelling and water absorption. When menstrual blood, urine, etc. are excreted, the water contained in the excrement is absorbed into the polymer powder, causing the polymer to swell, and as a result, the fragrance contained in the polymer powder evaporates. , emit a fragrance.

Examples of the polymer powder used in the present invention include acrylonitrile-grafted starch and copolymer.

Polymer obtained by carboxymethylating Tonlintar and then partially crosslinking with formaldehyde
123293), self-crosslinking polyacrylate (Japanese Unexamined Patent Publication No. 131450/1983), and the like.

The fragrances used in the present invention are not particularly limited (not only natural fragrances such as lemon oil, orange oil, lavender oil, and rose oil, which have been commonly used in the past, but also conventional synthetic fragrances can be used). In the present invention, sanitary products include sanitary napkins, tampons, disposable diapers, baby napkins, etc., and a method for applying the fragrance imparting agent of the present invention to sanitary products includes, for example, interposing polymer powder between a pair of nonwoven fabric sheets. Ordinary application methods such as

The fragrance-imparting agent of the present invention can be easily produced by, for example, preliminarily swelling the water-absorbing and swelling polymer, adding an aqueous dispersion of a fragrance thereto, mixing and stirring, and then drying and pulverizing. There are no particular restrictions on how to uniformly disperse fragrances in water, but - for example, an emulsifier such as a surfactant? In addition, a method of dispersion is effective.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

〔Example〕

Lemon flavor 0 in water-containing gel 1002 of self-crosslinking sodium polyacrylate described in JP-A-57-131450
．． After adding an aqueous dispersion containing 5 ft'' and stirring to encapsulate the fragrance in the hydrogel, the mixture was heated to 50°C.
The powder was dried under reduced pressure, and then finely ground to a particle size of about 100 to 500 microns of gold. Next, the aroma imparting agent obtained in this manner is applied to the surface of the nonwoven fabric at a rate of 100 f/a. This coating is placed on a plastic film, a sheet of absorbent cotton is layered on top of that, a non-woven fabric is placed on top of that, and the periphery of the laminate is lined with the plastic film on the back side. It was bonded to the nonwoven fabric on the surface.

Next, urine was sprinkled on the surface of the sanitary product thus obtained and absorbed into the core material through the nonwoven fabric, and a lemon-like odor could be felt, confirming the effectiveness of the present invention.

〔Effect of the invention〕

As explained above, according to the present invention, since the fragrance is encapsulated in the dry powder of the water-insoluble polymer that has a high degree of water swelling and water absorption, the fragrance does not volatilize as it is.
Only when the polymer absorbs moisture from menstrual blood, urine, etc. and swells can the fragrance contained in it volatilize out of the powder and release the fragrance, thus imparting fragrance to sanitary products only when necessary. can do.

Claims (1)

[Claims] A fragrance-imparting agent for sanitary products, characterized in that a fragrance is encapsulated in a water-insoluble polymer powder having a high degree of water swelling and water absorption.