JP2000139755A - Sebum-wiping paper and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide sebum-wiping paper which is not only superior in sebum wiping properties but also in sweat absorbing and stain removing properties, simultaneously removes sebum, sweat, and stain, is resistant to breaking in use, is satisfactory to the touch as the paper is soft to the touch while superior in properties in removing stain from irregularities in the skin, and irritates skin little. SOLUTION: Silk yarn manufactured from silk or waste silk thread which occurs in a spinning is cut to lengths of 1-10 mm, is then subjected to alkali cooking, and is further refined to mix raw silk yarn-fibrillated silk fiber pulp 10-60 (wt.)%, vegetable fiber pulp 90-40 (wt.)%, and a small amount of inorganic loading material uniformly in water. Then paper is manufactured, and an obtained sheet is calendered, densified, and glazed to manufacture sedum-wiping.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to blotting paper. More specifically, it has excellent absorbability of sebum, excellent absorbency of sweat and dirt-removing property, and can remove oil, sweat and dirt at the same time, and the oil is soft on paper and less irritating to the skin It is related to origami paper.

[0002]

2. Description of the Related Art Oil blotting paper is conventionally used to suppress excess sebum that has floated on the skin before redressing, and by removing them, the cosmetics such as foundation can be properly glued and the redress can be cleaned. Used for finishing purposes. As such oil blotting paper, a paper containing vegetable fiber as a main component has been conventionally known, and there is a paper obtained by blending a specific inorganic filler with a pulp raw material containing a vegetable fiber as a main component (Japanese Patent Application Laid-Open No. Hei 6-1994). No. 319664).

[0003]

However, the conventional blotting paper has the following problems. Although composed of vegetable fibers such as hemp, the sebum is not sufficiently removed, and sebum may remain on the skin even if used before redressing. Moreover, in addition to sebum, sweat and dirt in the air are also adhered to the skin, and these cannot be removed at the same time with conventional blotting paper, but remain on the skin. As a result, the paste of cosmetics such as a foundation is poor, and it is not possible to finish the makeup refining neatly.

Further, it is necessary to keep the strength constant in order to prevent the paper from being torn during use, so that the feel of the paper becomes hard and the skin may be irritated during use.

The present invention solves these problems and, in addition to excelling in sebum absorption, excels in sweat absorption and dirt-removing properties, and simultaneously removes oil, sweat and dirt, and breaks when used. It is an object of the present invention to provide an oil blotting paper that is hard to feel and the softness of the paper, so that it is excellent in removing dirt on unevenness of the skin, has good touch, and has little irritation to the skin.

[0006]

Means for Solving the Problems and Its Embodiments The present invention is characterized by oil blotting paper containing silk fiber pulp.

Another feature of the present invention is an oil blotting paper obtained by blending an inorganic filler with a fiber material consisting of silk fiber pulp and vegetable fiber pulp.

Further, the ratio of the fiber raw material composed of silk fiber pulp and vegetable fiber pulp is expressed by the following weight ratio:
６０60]: Characterized by oil blotting paper of [90 to 40].

[0009] Further, the present invention is characterized in that the vegetable fiber pulp is oil blotting paper which is at least one selected from Manila hemp, honey, flax, jute, and cotton.

Further, the inorganic filler is oil blotting paper which is at least one selected from talc, calcium carbonate, titanium oxide and white carbon.

The basis weight is from 10 g / m ² to 30 g / m ^2.
m ² , density 0.65 to 0.95 g / ml, JIS P
Surface smoothness of 300 to 30 by 8119-1976 method
It features oil blotting paper that is 00 seconds.

The silk fiber pulp is produced by cutting raw silk or waste silk generated in the spinning process into 1 to 10 mm lengths, followed by alkaline digestion and further beating to obtain silk raw yarns. It features oil blotting paper, which is fibrillated silk pulp for papermaking.

Further, (a) 10 to 60 (weight)% of silk pulp for papermaking, and (b) 90 to 40 (weight) of vegetable fiber pulp.
%, And (c) a small amount of an inorganic filler are uniformly mixed in water, and then the paper is made. The obtained sheet is calendered, densified, and polished. Is what you do.

[0014] In addition, a silk thread produced from raw silk or a waste silk thread generated in a spinning process is cut into lengths of 1 to 10 mm, then alkali-digested, and further beaten to form a fibrillated silk raw yarn. It is characterized by a method for producing silk pulp.

Conventionally, silk is an excellent material which has excellent oil absorbency, sweat absorbency, and dirt-removing property, can remove oil, sweat and dirt at the same time, has good touch, and is less irritating to the skin. However, since it was an expensive material and it was difficult to mold it into paper, it was not actually used for blotting paper. But,
According to the production method of the present invention, a refining treatment (removing sericin almost completely by enzymatic refining, and also removing a smell peculiar to silk) is performed by using waste yarn from raw silk and waste yarn from silk fabric. A refining method that made good use of it, and an SOC treatment (for exclusive use of silk raw cotton, a carding machine for spinning was used to remove impurities in the silk raw cotton using a special metallic cloth and a cylinder metallic wire in consideration of the arrangement. Treatment) and can be formed as paper using relatively inexpensive waste silk, and can also be used as a blotting paper by taking advantage of the excellent properties of the silk material. .

The fiber raw material is selected from silk yarn and vegetable fiber. The silk thread referred to in the present invention generally refers to a thread obtained by scouring raw silk produced by a silkworm such as a domestic silkworm or a wild silkworm, or a waste silk thread generated in a silk fabric manufacturing process. After cutting these silk yarns to a length of 1 to 10 mm, preferably 2 to 5 mm, the water retention and dispersibility in water are enhanced by alkaline cooking. A typical example of the alkaline cooking is described in detail in Examples, but a method of treating the solution in a 0.5 to 1.0% aqueous sodium hydroxide solution at a temperature of 60 to 80 ° C. for an appropriate time can be mentioned. Then, the digested silk yarn is beaten in a bitter or a refiner to promote the fibrillation of the silk fiber, and as a result, a preferable silk pulp for fiber in which the bonding force between fibers and other fibers is improved in a paper making process is obtained. (For alkaline digestion of silk, see
-50394 can be used).

[0017] The plant fiber referred to in the present invention is NBKP,
It means wood pulp such as LBKP, NUKP, LUKP or the like, or bast fiber pulp such as mulberry, mitsumata, goose, manila hemp, kenaf or the like, or chemically regenerated fiber pulp such as rayon, acetate. Of course, polyolefin-based, polyaramid-based synthetic fiber pulp or polyethylene, polypropylene, polyethylene terephthalate, etc.
Mixing of synthetic fibers such as polyamide is also acceptable.

The silk pulp for papermaking and the vegetable fiber pulp thus prepared are mixed in a weight ratio of 10 to 60 to 90 to 40.
After uniformly mixing in water to obtain a paper, the paper can be formed. Papermaking can be easily performed by a known method using a conventionally known facility, that is, a round paper machine, a short net paper machine, or a long net paper machine. At this time, it is desirable to add a small amount of an inorganic filler, because the properties such as the softness of the blotting paper and the low irritation to the skin are further improved.

The silk-containing paper thus obtained is further subjected to high-pressure calendering to tighten the paper structure, increase the surface smoothness, and polish. As a result, the contact area with the human body, especially the skin, increases, and the effect of oil blotting is further enhanced. As calendar processing equipment,
General glazing super calendering machine, high pressure calendering machine with heating roll / elastic roll combination, heating roll /
Either a steel match machine with a combination of elastic rolls or the like can be used.

At this time, it is possible to impregnate a small amount of a hygroscopic agent, a surfactant or the like immediately before or immediately after to improve the water retention of the blotting paper.

The inorganic filler can be selected from commonly known inorganic fillers, and preferred examples include talc, calcium carbonate, titanium oxide, white carbon, kaolin and the like. In particular, talc and calcium carbonate have a great effect of improving the softness as a blotting paper and improving performance such as reduction of skin irritation.

The compounding amount is such that the ratio of silk fiber pulp to at least one fiber raw material selected from vegetable fiber pulp or synthetic fiber is 10 to 60 to 90 to 40 by weight. And more preferably 35 to 50 to 50 to 65. If the amount of the silk fiber pulp is less than this, it is difficult to obtain effects such as improvement in feel to the touch and reduction of irritation to the skin. The amount of the inorganic filler is preferably 3 to 50 parts by weight, more preferably 5 to 20 parts by weight, based on 100 parts by weight of the total fibers. If the amount of the inorganic filler is less than this, it is difficult to obtain the required density, while if it is more than this, it is difficult to obtain effects such as improvement in feel to the touch and reduction in skin irritation, which is not preferable.

The basis weight of the blotting paper of the present invention is 10 to 30.
preferably g / ^{m 2,} more desirably it is 15-25 g / ^{m 2.} If the amount is less than this, it is difficult to obtain the strength as paper, while if it is more than this, it is difficult to obtain effects such as improvement in softness and reduction of skin irritation, which is not preferable.

The density of the blotting paper of the present invention is 0.65 to 0.65.
0.95 g / ml is preferable, and 0.70 to 0.8 is more preferable.
It is preferably 5 / ml. If the amount is less than this, it is difficult to obtain the strength of the paper, while if it is more than this, it is difficult to obtain effects such as improvement in skin feel and reduction of skin irritation.

The smoothness of the blotting paper of the present invention is 300
~ 3000 seconds, preferably 500 ~ 2000
Second, more preferably 700 to 1300
Desirably seconds. If it is less than this, it is difficult to obtain effects such as oil and sweat absorption, dirt removal properties,
If the amount is larger than this, it is difficult to obtain the effect of improving the feel to the touch, which is not preferable.

The oil blotting paper of the present invention can be used, if necessary,
It can be colored within a range that does not impair its properties. The color can be appropriately selected from white, pink, sepia, blue, green and the like. Of these, white is easy to understand the stain removal property after use, and sepia is easy to understand the change in transparency of oil blotting paper after absorbing sebum, and can be preferably used.

Various additives and auxiliaries can be added to the oil blotting paper of the present invention, if necessary, as long as its properties are not impaired.

[0028]

The method for measuring characteristic values and the method for evaluating the effects of the present invention are as follows.

Smoothness: JIS P8119-197
No. 6, "Smoothness test method for paper and paperboard using a Beck tester" (unit: second).

Sebum absorption and sweat absorption: JIS P8
141, "Test method for water absorption by paper Klem method" was applied. The measurement method was as follows: a test piece of 15 mm width and 100 mm length was kept in advance at 20 ° C. and 65% for 24 hours, and after keeping the conditions constant, a marking line was drawn at 15 mm from the lower part of the test piece, and it was put on a hanger. Hang down. An immersion container containing squalane or purified water is installed immediately below the immersion vessel, and immersed quickly to the marked line. The height of squalane or purified water that had risen for 10 minutes was read, and the value was taken as the absorbability of sebum or sweat.

Stain removal property: A test paper was placed on a flattened powder containing a colorant, pressed lightly 10 times, and the adsorption rate was measured. The value was taken as the stain removal property.

Sensory test (oil / sweat / dirt removal, touch, skin irritation, resistance to tears, etc.): For women who use oil blotting paper more than usual, use it as usual for 3 days or more. Received.

Example 1 [Alkali cooking] 150 kg of Chinese silk thread cut to a length of 2.5 mm was added to 2400 L of 0.7% aqueous sodium hydroxide solution (bath ratio 1:16) heated to 70 ° C. After absorbing well, alkaline cooking is carried out for 1 hour at the same temperature with occasional stirring. The cooked pulp is washed with water,
Crude pulp was obtained. Then, the crude pulp was beaten for about 1 hour by using a beater, and the mixed long fibers were removed by sieving with a frant screen to obtain silk pulp for purified papermaking. The yield of the refined silk pulp for papermaking was 81%.

[Beat] A commercially available manila hemp pulp (imported from the Philippines, beating degree (13 ° SR by smashing the fiber and smashing the fiber to see the fiber entangled)) was taken in a beater, and about 50 times the amount of water was added. It was beaten and fibrillated. Final beating degree was 20 ° SR.

[Papermaking and processing] 40% of the silk pulp for papermaking produced above, 50% of beaten Manila hemp pulp and talc 1
After uniformly dispersing 0% in water, papermaking was performed using a round paper machine. The temperature of the Yankee dryer was 150 ° C., and the papermaking speed was 40 m / sec. This paper was processed at a linear pressure of 100 kg / cm and a processing speed of 10 m / min by a calendering machine comprising a metal roll and a paper roll heated to 150 ° C. The basis weight of the obtained silk-containing paper was 18 g / m ² .

Example 2 In the same manner as in Example 1, silk-containing paper having a basis weight of 21 g / m ² was obtained.

Comparative Examples 1 and 2 For comparison, in Example 1, two types of paper made of paper pulp and 100% Manila hemp pulp containing no talc were prepared. Basis weight 17 g / m ² (Comparative Example 1) and 15 g / m ²
(Comparative Example 2).

The compositions of Examples 1 and 2 and Comparative Examples 1 and 2,
Table 1 shows the properties such as the basis weight and the results of water absorption, oil absorption, stain removal properties, and sensory tests.

[Table 1]

As a result of the sensory test, Examples 1 and 2 were soft to the touch and less irritating to the skin, and were able to remove oil, sweat and dirt at a time. Finish and makeup lasting were good.

In Comparative Examples 1 and 2, the touch was poor and some irritation to the skin was felt. In addition, oil and sweat were not sufficiently removed, and Comparative Example 1 was not sufficiently dirt-removing and did not take any sweat.

Example 3 25% silk pulp, 40% Manila hemp pulp, rayon (Daiwabo "Rayon") for refined paper and papermaking prepared in Example 1
(SB: Denier 1.5, length 5 mm) 25% and talc 10% were taken in a pulper and mixed sufficiently evenly in 800 times the volume of water, and then formed by a circular paper machine in the same manner as in Example 1. , Calendar processing. The obtained silk-containing paper has a basis weight of 20 g / m ² , a density of 0.71 g / cm ³ , and a smoothness of 80.
It was 0 seconds.

In Example 3, as in the case of Examples 1 and 2, as a result of the sensory test, good results were obtained in terms of touch, irritation to the skin, and removal of oil, sweat and dirt.

[0043]

According to the present invention, a sheet obtained by blending an inorganic filler with a fiber raw material consisting of silk fiber pulp and vegetable fiber pulp, mixing uniformly in water and calendering the paper is used to densify the sheet. In addition to being excellent in sebum absorption, it is excellent in sweat absorption and dirt removal, so it removes excess oil, sweat and dirt on the skin at the same time, and it is hard to tear when used, Because of the soft touch of the paper, an oil-absorbing paper was obtained that was excellent in fine soil removal even on uneven portions of the skin, had good touch, and had little irritation to the skin. Therefore, the paste of cosmetics such as foundation is improved, and makeup repair is finished more beautifully, and the makeup lasts better.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Takashi Ninagawa 7 Omiya Nakanoshamachi, Kita-ku, Kyoto F-term (reference) 2D034 AB00 4L055 AA07 AA08 AA09 AF09 AF11 AF44 AF46 AG11 AG12 AG18 AG19 AG26 AH01 BB03 BE02 EA04 EA08 EA12 EA16 FA13 FA16 FA30 GA46

Claims (9)

[Claims] 1. Oil blotting paper characterized by blending silk fiber pulp. 2. An oil blotting paper comprising an inorganic filler mixed with a fiber raw material consisting of silk fiber pulp and vegetable fiber pulp. 3. The weight ratio of the fiber raw material consisting of silk fiber pulp and vegetable fiber pulp is as follows:
60]: The oil blotting paper according to claim 1 or 2, wherein [90 to 40]. 4. The blotting paper according to claim 1, wherein the vegetable fiber pulp is at least one selected from Manila hemp, honey, flax, jute, and cotton. 5. An inorganic filler comprising talc, calcium carbonate,
5. The blotting paper according to claim 1, wherein the blotting paper is at least one selected from titanium oxide and white carbon. 6. A base weight of 10 g / m ² to 30 g / m ² ,
Density is 0.65 to 0.95 g / ml, JIS P811
The blotting paper according to any one of claims 1 to 5, wherein the surface smoothness according to the 9-1976 method is 300 to 3000 seconds. 7. A silk fiber pulp is produced by cutting raw silk or waste silk generated in a spinning process into a length of 1 to 10 mm, followed by alkaline digestion and further beating to convert the raw silk into fibrils. 7. Oil blotting paper according to any one of claims 1 to 6, which is a silk pulp for papermaking. 8. A papermaking machine comprising the steps of uniformly mixing 10-60% by weight of silk pulp for papermaking, 90-40% by weight of vegetable fiber pulp and a small amount of inorganic filler in water, and then making the paper. A method for producing oil-absorbing paper, comprising calendering and densifying and polishing. 9. After cutting a silk yarn produced from raw silk or a waste silk yarn generated in a spinning process into a length of 1 to 10 mm,
A method for producing oil-absorbing paper, characterized by using silk pulp for papermaking in which a silk raw yarn is fibrillated by alkali cooking and beating.