JP5766964B2 - Oil blotting paper and its manufacturing method - Google Patents

Description

  The present invention relates to a blotting paper used for removing sebum and sweat from the face during makeup retouching and the like.

  Oil blotting paper has a function of absorbing sebum by being pressed against the part of the face where sebum is secreted, and is widely used mainly by generations where sebum is actively secreted. In recent years, the number of male users has also increased and may be used for sweating purposes.

  Oil blotting paper can be mass-produced by general papermaking techniques, but many products produced by such a method have a hard feel and cannot be said to be easy to use.

Focusing on the above problems, some oil blotting papers with increased softness have been developed.
For example, Patent Document 1 can produce oil-blotted paper that is hard to tear and has increased softness by making a paper material obtained by mixing silk fiber pulp generated from silk scrap yarn with vegetable fiber pulp. Have been described. Patent Document 2 describes that the softness of oil blotting paper and the absorbability of sebum can be improved by carrying out papermaking without adding filler using vegetable fiber pulp containing bamboo pulp as a raw material. (See Patent Document 2). Japanese Patent Application Laid-Open No. H10-228561 describes that oil-blotting paper with improved flexibility and fit to the skin is generated by creping.

JP 2000-139755 A Japanese Patent No. 4415168 JP 2001-145517 A Japanese Patent Laid-Open No. 2006-169689

The inventor of the present invention studied to increase the softness of oil blotting paper using a softening agent.
The softener is used for the purpose of enhancing the softness of the tissue paper (see Patent Document 4 above), and it is possible to soften the paper to some extent by adding the softener to the oil-blotted paper. This could be confirmed by experiments.

  However, even if a softening agent is externally added to a conventional product using only pulp fibers, the softness required by those with weak skin or those who place an emphasis on luxury is not achieved. It was also confirmed that just increasing the softness of the paper does not necessarily improve the touch.

  The present invention pays attention to the above problems, and an object of the present invention is to provide a blotting paper with improved softness and feel.

The oil blotting paper according to the present invention is formed by uniformly mixing cotton pulp fibers and non-wood pulp fibers other than cotton pulp fibers and wood pulp fibers with a mass ratio of cotton pulp fibers to the whole paper being about 30%. Each of the pulp fibers contains a softening component remaining after the liquid softening agent has been permeated and dried .

The above oil blotting paper is a paper material in which each fiber is evenly mixed by beating cotton pulp fibers and non-wood pulp fibers other than cotton pulp fibers and wood pulp fibers, and setting the mass ratio of cotton pulp fibers to about 30%. a step of generating to a step of papermaking the generated stock, the steps of infiltrating the fabric softener to the respective pulp fibers by external addition a liquid softener to the paper produced by papermaking, the softener It can be manufactured by performing a process of evaporating the moisture of the paper by bringing a hot roll into contact with the entire surface of the paper after the external addition.

  The cotton pulp fiber can be extracted from a new cotton collected from cotton and cut short. However, if the cotton to be discarded (fallen cotton) generated in the spinning process or the like is used, resources can be used effectively and the production cost can be reduced.

In the present invention, cotton and pulp materials other than pulp, and non-wood pulp and wood pulp that are often commonly used in oil blotting paper such as Manila hemp, used at a predetermined rate.

In the step of producing the stock, for example, after each pulp fiber is ground and beaten for each seed, the fibers are mixed evenly. Alternatively, each pulp fiber may be ground for each seed and then mixed and beaten.
In this step, a material obtained by adding an appropriate amount of filler or dye to pulp fibers and mixing them may be used as a paper material.

The process of making the generated stock can be performed by a paper machine having a general configuration. By this step, a paper in which cotton pulp fibers are mixed evenly is generated. This paper is softer and softer than paper containing no cotton pulp fibers.
Furthermore, when a softening agent is externally added to the above paper, the softening agent soaks into each pulp fiber, but the softening agent is likely to soak into the cotton pulp fiber, and the softness of the cotton pulp fiber is further enhanced. Therefore, the softness of the entire paper can be significantly increased as compared with the case where a softening agent is externally added to paper not containing cotton pulp fibers.

  Thereafter, the oil-dried paper is completed by cutting the paper dried by a heat roll into a required size. When this oil-blotting paper is applied to the face, a good touch can be obtained by the cotton pulp fibers mixed in the entire paper. In addition, as described above, the softness of the entire paper is increased, so that the oil-blowing paper is less irritating to the skin and is easier to use.

In the oil blotting paper according to the present invention, the mass ratio of cotton pulp fibers to the whole paper is about 30%. According to this mass ratio, it was confirmed by experiments that the strength to withstand use as a blotting paper was ensured and the softness was greatly increased.

  The oil-blotting paper according to the present invention is evenly mixed with cotton pulp fibers whose softness has been increased by the softening agent, so that the degree of softness is increased and the touch during use is greatly improved. Therefore, it is possible to provide oil-blotting paper that is less irritating to the skin and is easy to use.

It is a flowchart which shows the process implemented by manufacture of oil blotting paper. It is a figure which shows schematic structure of the coating machine which implements the process 3 and the process 4. FIG.

FIG. 1 shows the steps carried out in the production of oil blotting paper according to the invention.
Referring to FIG. 1, first, in a first step 1, a paper stock containing cotton pulp fibers is generated. Specifically, after the cotton pulp fiber and other pulp fibers are ground and beaten, the fibers and additives such as fillers and dyes are put into a mixing apparatus and mixed thoroughly.

  As pulp materials other than cotton pulp, non-wood pulp such as manila hemp, flax, kenaf, bamboo, banana fiber, etc. can be used in addition to wood pulp (conifer pulp or hardwood pulp). Moreover, it has been confirmed by the inventor that fibers extracted from citrus fruits such as orange can be used.

For wood pulp, hardwood pulp may be used to increase the softness of the paper, but to ensure the strength of the paper if an amount of cotton pulp fibers that can ensure sufficient softness is introduced. It is desirable to use softwood pulp. However, a mixture of softwood pulp and hardwood pulp may be used.
In addition to wood pulp, it is desirable to use non-wood pulp (manila hemp, bamboo, etc.) having a function of increasing sebum absorption.

  In step 2, the paper stock produced in step 1 is put into a paper machine to form paper. The paper machine is of a general configuration. The processing unit (wire part) generates a wet sheet by spreading the stock on the paper net and cuts the water, and the processing unit (press part) presses the wet sheet. ), And a processing unit (dryer part) for drying the wet sheet after dehydration. By carrying out the processing by these processing sections in order, a paper in which cotton pulp fibers are mixed evenly is completed.

  In step 3, a softening agent is externally added to the entire surface of the generated paper. In step 4, the paper after the external addition is dried. These steps 3 and 4 are performed by a coating machine having a configuration as shown in FIG.

  The coating machine includes a tray 10 filled with a liquid softening agent, a pickup roll 11, a backup roll 12, three heat rolls 21, 22, 23, an embossing roll 30, and a plurality of guide rolls 40. . Note that the number of heat rolls is not limited to three.

  The pickup roll 11 rotates with the lower half immersed in the softener in the tray 10, and the backup roll 12 is disposed above the pickup roll 11. The paper sheet S to be processed is guided between the rolls 11 and 12 and comes into contact with the surface of the pickup roll 12 to which the softening agent is attached. Thereby, the softening agent is applied to the surface of the paper sheet S.

  In this embodiment, the softener used is a mixture of ceramide and sorbitol F in a one-to-one ratio. However, the present invention is not limited to this, and other softeners such as polyhydric alcohol and polyethylene glycol can be used. The chemicals can also be used.

  Steam is supplied to each of the heat rolls 21, 22 and 23, and the temperature can be adjusted in a range from 80 degrees to 140 degrees depending on the supply amount. The first heat roll 21 is disposed opposite to the embossing roll 30, and the paper sheet S after application of the softening agent is guided between the rolls 21 and 30. The embossing roll 30 is pressed against the paper sheet S by a moving mechanism (not shown), whereby the surface of the paper sheet S is embossed. The embossed paper sheet S sequentially passes through the second and third heat rolls 22 and 23, during which the deformation of the sheet S is corrected and the moisture in the sheet S evaporates. The processed paper sheet S is wound up by a winding mechanism (not shown). In FIG. 2, reference numeral 100 denotes a paper roll formed by winding the paper sheet S.

  The softening agent applied in the step 3 soaks into the pulp fibers of the paper sheet S. Even if the moisture of the paper sheet evaporates in Step 4, the component of the softening agent remains in the pulp fiber, so that the pulp fiber becomes softer than before performing Step 3. In particular, since the softening agent is easily infiltrated into the cotton pulp fiber, the cotton pulp fiber becomes even softer, and the degree of softness of the whole oil blotting paper is also increased.

  In the example of FIG. 2, the embossing of the paper sheet S is included in step 4, but this is not an essential process. However, by performing embossing, the paper surface of the finished product is easily adapted to the unevenness of the skin, the adhesion to pores is enhanced, and the sebum absorption and touch can be improved.

  In Step 4, it is not always necessary to completely dry the paper sheet, and the paper sheet may be finished in a state containing some moisture by adjusting the number and temperature of the heat rolls.

  Returning to FIG. In the last step 5, the paper sheet S that has finished step 3 and step 4 is cut into a required size by a cutting machine. This completes the oil blotting paper.

Next, a specific example of blotting paper to which the above manufacturing method is applied will be described together with the results of the test.
In this example, a stock was produced by performing step 1 using the following materials.
<Pulp material>
Manila hemp 41.0% by mass
Conifer pulp 29.0% by mass
Cotton pulp 30.0% by mass
<Additives>
Microtalc 10.0% by mass
Dye 0.23 mass%
(All are ratios to pulp material.)

  In addition, regarding the cotton pulp fiber, in this example, pieces of short fibers usually discarded at the site of producing a cotton puff for cosmetics were collected, and those finely pulverized were beaten.

  Furthermore, a paper was produced by carrying out Step 2 on the produced stock, and Steps 3, 4 and 5 were carried out in order on this paper. In Step 3, as a softening agent, glycerin and sorbitol F were mixed at a ratio of 1: 1, and a small amount of uzceramide B was added.

  In addition to the oil blotting paper manufactured by the above method (hereinafter referred to as “softener-added sample”), the material is the same as above, but the oil blotting paper manufactured without performing steps 3 and 4 (hereinafter “ Various experiments were conducted on “softener-free sample”). A summary of the experimental results is shown in Table 1.

As described above, JIS-compliant tests were conducted for basis weight, thickness, density, tensile strength, and wet tensile strength.
As for softness, a test based on “Softness test method for sanitary thin paper (J TAPPI No.34)” was carried out using a handle ohmmeter manufactured by Kumagaya Rikyu Kogyo Co., Ltd. In this test, a sample cut to 100 mm square is set on a receiving plate with a 6.35 mm wide gap, and the resistance force applied when the sample is pushed into the gap is measured. A smaller value indicates a higher degree of softness.

Although not shown in Table 1, it is a separate product developed by the inventor (which uses fibers extracted from orange pomace as the main raw material, does not contain cotton pulp fibers, and is not coated with a softening agent). When the same softness test was performed on a sample having a basis weight of 21.5 g / m ² and a thickness of 27.2 μm, a numerical value in the vertical direction was 209 mN and a numerical value in the horizontal direction was 55 mN. Although this separate product has a different basis weight and thickness from the softener-free sample shown in Table 1, it can be said that the softener-free sample has a higher degree of softness even in consideration of the difference. This difference seems to be due to the fact that cotton pulp fibers are evenly mixed throughout the sample without the softener.

  The softener-added sample of this example is formed thicker than the softener-free sample in order to ensure strength. However, as shown in the results of the softness test in Table 1, the degree of softness was higher in the softener-added sample in both the vertical and horizontal directions. In general, taking into account that the degree of softness decreases as the paper thickness increases, the thicker softener-added sample was softer than the thin softener-free sample. In particular, it seems to depend largely on the action of the softener on the cotton pulp fiber.

By the way, the step of externally adding a softening agent and the drying step are performed on the above-mentioned different products to produce a sample having a basis weight of 20.3 g / m ² and a thickness of 37.2 μm, and the same softness test is performed. As a result, the numerical value in the vertical direction was 158 mN, and the numerical value in the horizontal direction was 41 mN. Although the thickness and basis weight values of the sample and the softener-added sample are different, the softener-added sample using cotton pulp fibers does not contain cotton pulp fibers even if the difference is taken into account. It can be said that the degree of softness is higher than that obtained by externally adding a softening agent.

  As described above, the softener-added sample according to this example is the same material as the sample in which the softener was not externally added, or the sample that was generated from the material that does not include cotton pulp fibers and the softener was externally added. Also turned out to be softer. Moreover, according to the test results of tensile strength and wet tensile strength, the strength of the softener-added sample is lower than that of the softener-free sample, but the test conforming to JIS P-8113 disclosed in Patent Document 3 It was found that a stronger strength than the result was obtained. Therefore, it seems that the strength for use as oil blotting paper is sufficiently ensured even in the softener-added sample.

S Paper sheet 10 Tray of softening agent 11 Pickup roll 12 Backup roll 21, 22, 23 Heat roll 100 Paper roll

Claims (2)

Cotton pulp fibers and non-wood pulp fibers other than cotton pulp fibers and wood pulp fibers are uniformly mixed with the mass ratio of cotton pulp fibers to the whole paper being about 30% , and each pulp fiber is liquid soft Oil blotting paper comprising a soft component remaining after the agent is infiltrated and dried . A process of producing a stock in which each fiber is uniformly mixed by beating cotton pulp fibers and non-wood pulp fibers other than cotton pulp fibers and wood pulp fibers, and setting the mass ratio of cotton pulp fibers to about 30%. and a step of papermaking stock, comprising the steps of infiltrating the fabric softener to the respective pulp fibers by external addition softener liquid to the paper produced by papermaking, the entire surface of the paper outer after hydrogenation of the softener A method for producing oil-blotting paper, comprising: evaporating moisture of the paper by bringing a heat roll into contact therewith.

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