JPH0328222B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a fiber sheet with high deodorizing properties, and more specifically, a absorbent cotton band impregnated and dried with a specific liquid deodorant, which includes a layer of silica gel or other moisture absorbing material, and is compressed and embossed in the thickness direction. The deodorizing fiber sheet has been further developed, and a reinforcing fiber sheet is laminated on one or both sides of a absorbent cotton band treated with a liquid deodorant containing a moisture absorbent layer, and the deodorizing fiber sheet is compressed and embossed. Regarding fiber sheets. Conventionally, liquid deodorizers have been used either by being added to or applied to the object in liquid form, by applying as aerosol spray particles, or by impregnating and drying unglazed ceramics to carry them. However, little is known about the impregnation and drying of fiber sheets. The first reason is that fiber sheets, whether woven, nonwoven, or knitted, have many microfiber gaps, but maintain voids that effectively deodorize while stimulating the target object, the odour. In order to do this, it is necessary to stack a large number of fiber sheets, which is presumably because the cost increases. Next, fiber sheets with high water absorption and a large number of voids relative to the amount of fiber include absorbent cotton bands and pulp cotton bands. The second reason is that it has not been used as a carrier for liquid deodorants due to its fragility. The present applicant succeeded in compressing and embossing the absorbent cotton belt under steam heating, which had been considered technically impossible until then. Patent Application 133631-1989 (filed on July 22, 1982) for a cotton non-woven fabric that maintains high hygroscopicity and water absorption, does not expand in the thickness direction during use, and is guaranteed to have increased strength through embossing. By impregnating and drying a liquid deodorant into this cotton nonwoven fabric, the suitability of the absorbent cotton belt as a deodorant carrier is improved. Patent application No. 59-24164 dated February 10, 1980
(Japanese Unexamined Patent Publication No. 168459/1983). The present invention applies a special liquid deodorizing agent to be described later to the fiber sheet obtained by this latter method, and in combination with this, the fiber sheet is incorporated within the thickness of a layer of moisture absorbent material such as silica gel. It was discovered that the deodorizing efficiency (odor removal rate) of activated carbon powder particles is 40-73%, and it exhibits an outstanding deodorizing property of 94% or more, which is almost the same or higher, and the invention of the method of the earlier application was made. Fiber sheets as products are also supplied here. The present invention will be described in more detail below, but details that overlap with the content of the prior application will be omitted. The liquid deodorizer used in the present invention refers to components having deodorizing and deodorizing effects that are contained in the leaves of plants of the Camellia family, that is, in the fresh leaves of tea plants, sasanqua flowers, camellia, sakaki, etc., or in the dried products thereof. It consists of a pale yellow oily liquid extracted with an alcohol-based, ketone-based solvent, water, or a mixed solvent thereof.The active ingredient is the ingredient that has the deodorizing effect mentioned above, and it itself is Shiraimatsu Shinyaku ( Co., Ltd. under the trade name ``Fretsuyu Shiraimatsu'' (some dealers also call it ``Fresca''). ], which is aromatic and has a slightly sweet taste. The chemical stability and quantification of the above components have not yet been fully elucidated. Its deodorizing effect is only a matter of speculation, but it is thought to be due to the combined action of dozens of components, including inclusion, neutralization, and addition reactions of flavanols, flavanols, organic polymers, etc.
It also shows excellent odor removal rates against ammonia, trimethylamine, acetic acid (and hydrogen sulfide). The details are in the patent application filed earlier by the above company in 1982.
2927 (Japanese Unexamined Patent Publication No. 56-100060), we will omit it here. By combining this liquid deodorant with a layer of moisture-absorbing material such as silica gel, the present invention creates a feature that cannot be obtained with existing deodorants, in that it exhibits a maximum removal rate of over 98%. The moisture absorbent layer is preferably a silica gel powder layer,
In addition, Shirasuburn, water-absorbing polymers [e.g., Nippon Shokubai Kagaku Kogyo Co., Ltd.'s product name "Aquarik"
CA”, product name “Sunwet” manufactured by Sanyo Chemical Co., Ltd.],
Spread layer of powder particles of activated carbon, calcined vermiculite, porous ceramics, etc. or water-absorbing fiber sheet [for example, Asahi Kasei Corporation's product name "SAB (Super,
Ablevent Benliese) ``non-woven fabric'' can also be applied in place of the powder layer.The above ``Fretsuyu Shiraimatsu'' deodorant liquid and moisture absorbing material layer are contained within the absorbent cotton band and the whole is compressed. The procedure for embossing is to impregnate an absorbent cotton strip, mainly made of absorbent cotton, with an aqueous solution of the deodorant solution, dry it to reduce fuzz and give it a shine, and then apply the embossing on the obtained absorbent cotton strip. A process of sprinkling moisture-absorbent powder particles on top of the absorbent cotton strips and stacking another absorbent cotton strip that has been treated with a deodorizer and dried using the same method, and simultaneously compressing and embossing the upper and lower absorbent cotton strips. To summarize the process with a diagram, a pair of upper and lower absorbent cotton bands 1 and 2 that have been impregnated and dried with "Fretsuyu Raimatsu" deodorant liquid are placed on an embossing roll 4,
When sending the roll to the laminating roll whose lower part is a flat roll 5, as shown in the figure, moisture-absorbing material powder particles 3 are appropriately sprinkled and supplied to the overlapping side of one of the absorbent cotton strips 2 (in addition, when using a hygroscopic fiber sheet, (sandwiched between both absorbent cotton bands 1 and 2) Both bands 1 and 2 are rolled into the roll 4,
By crimping (cold or hot may be used) in step 5, the absorbent cotton bands 1 and 2 are made to have a thickness of 1/3 to 1/8 of their original thickness with a layer of moisture absorbent powder particles 3 sandwiched between them. Both bands 1 and 2 are compressed into one body by the deodorizing agent impregnated and dried and carried between both bands to obtain a fiber sheet s. The upper absorbent cotton band 2 is provided with an embossed pattern consisting of concave portions 41 and convex portions 42. The moisture absorbent powder 3 is entangled with the fibers strongly compressed by the recesses 42, so that it is almost immovably fixed between the layers 1 and 2 of the belts even without an adhesive. The sheet of the present invention, which is subjected to the embossed pattern and compression by the uneven portions 41 and 42, is not only prevented from fuzzing and hair loss on the surface, but also has its tensile and bending strengths reinforced, compared to a simple absorbent cotton band. Of course, it can be applied to various uses, but in order to achieve even stronger reinforcement, reinforcing fiber sheets are laminated on the front and back sides (either one is fine) of the absorbent cotton bands 1 and 2, and the whole is compressed. Embossing is also an effective method. FIG. 4 shows a specific example. As is clear from the figure, fiber sheets 6 and 7 (in this example, cellulose-based chemical fiber nonwoven fabric) are stacked on the front and back sides of absorbent cotton bands 1 and 2, and both cotton bands 1 and 2 are compressed and embossed, respectively. . Fiber sheet s sufficiently reinforced by these fiber sheets 6 and 7
It will be readily understood that this will be more durable than the previous example when being stretched or bent while an object is placed on it. In addition to non-woven fabrics made of various fibers, woven fabrics,
Knitted fabrics, loose paper, net fabrics, etc. are freely chosen. Regarding the technique of impregnating and drying the deodorant liquid into the absorbent cotton band mentioned above, and the range of equivalents and substitutes, please refer to February 10, 1982.
In addition, the technology for polymerizing absorbent cotton bands and the sprinkling and supplying of moisture-absorbing material particles between them, and the equivalent
The details of the alternative ranges are stated in the respective patent applications filed on February 9, 1988, so we will not discuss them in detail here. Examples of the present invention will be described below. (Examples 1 to 5) (i) Samples and their details...as shown in (Table 1)

【table】 (ii) Deodorization test

【table】

【table】

【table】

[Table] As is clear from the above results, the average removal rate of sample No. 1, which sandwiched the silica gel layer, was as high as 94%.
In addition, although it was for trimethylamine alone, Samples Nos. 4 and 5, which also sandwiched a silica gel layer, gave excellent results with a maximum of 97 to 98%. Sample No. in which a hygroscopic fiber sheet was sandwiched between
2 and 3 show that the average removal rate is on the order of 70%, which is comparable to that of activated carbon.
It is noteworthy that such a result can be obtained with a fiber sheet. Samples No. 2 and 3 are No. 1, 4, and 5
Considering that the removal rate is inferior to that of the deodorant, it can be seen from the comparison between samples containing the same amount of deodorant that it is probably due to the difference in the moisture absorbing material layer. Sample No. with the same amount of silica gel layer but different amounts of deodorant.
From the comparison between 4 and 5, it can be seen that the amount of deodorant does not make a significant difference in the removal rate.
It is speculated that this is due to the saturation value of the medicinal efficacy of the deodorant, or to the fact that there is no difference in the additive effects of silica gel. As can be understood from the description and explanation, according to the present invention, a liquid deodorant containing a deodorizing ingredient contained in the leaves of a Camellia family plant as an active ingredient is impregnated and dried, and a moisture absorbing material layer is included inside. The fiber sheet, which is entirely compressed and embossed, has a deodorizing and removal rate equivalent to 70% or slightly higher than that of conventional activated carbon, and even more than 94%. In addition to obtaining a deodorizing fiber sheet, this sheet is compressed and embossed to make it thinner and stronger, and there is no fluffing or hair loss on the surface, so it can be used in a wide range of places, such as inside refrigerators, toilets, and cars. It is lightweight and easy to handle, making it more convenient than conventional solid powder deodorants and liquid deodorants.

[Brief explanation of the drawing]

Fig. 1 is a one-step schematic diagram showing the procedure for producing the fiber sheet of the present invention, Fig. 2 is a partially enlarged vertical sectional view showing an embodiment of the inventive sheet, and Fig. 3 is a partially cutaway perspective view of the same sheet. FIG. 4 is a diagram similar to FIG. 2 of another embodiment of the present invention. Explanation of symbols, 1, 2...Absorbent cotton band, 3...Mixed powder particles, 31...Moisture absorbent powder particles, 32...Deodorant powder particles,
6,7... Reinforced fiber sheet, S... Deodorizing fiber sheet of the present invention.

Claims (1)

[Scope of Claims] 1. Silica gel, activated carbon, water-absorbing polymers, etc. are placed in an absorbent cotton band that can be impregnated and dried to carry a liquid deodorizer whose active ingredient is the deodorizing ingredient contained in the leaves of Camelliaaceae plants. A deodorizing fiber sheet comprising a layer of moisture absorbing material, the absorbent cotton being compressed into a sheet shape and embossed. 2. A layer of moisture absorbing material such as silica gel, activated carbon, or water-absorbing polymer is contained within an absorbent cotton band that can be impregnated and dried to carry a liquid deodorant whose active ingredient is a deodorizing ingredient contained in the leaves of Camelliaaceae plants. , reinforcing fiber sheets are stacked on one or both sides of this absorbent cotton band,
A deodorizing fiber sheet is obtained by compressing these reinforcing fiber sheets and absorbent cotton strips into a sheet shape and then subjecting it to embossing. 3. The deodorizing fiber sheet according to claim 2, wherein the reinforcing fiber sheet is a nonwoven fabric. 4. The deodorizing fiber sheet according to any one of claims 1, 2, and 3, wherein the moisture absorbent layer is a removal layer of moisture absorbent powder particles or a water absorbent fiber sheet.