JP2012081164A - Flexible sheet for cosmetic and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an entirely new disposable flexible sheet for cosmetics, suitable for applying various cosmetics on a skin, wiping the cosmetics off from the skin, or cleaning a cosmetic tool that is dirty with the cosmetics etc., and to provide a method for manufacturing the sheet.SOLUTION: The flexible sheet 1 used for cosmetics has a pile layer 4 obtained by electrostatically flocking short fibers, having average single yarn fineness of 0.6-60 dtex and a length of 0.3-5 mm, on at least one surface of a base material 2 that consists of a nonwoven fabric having a mass per unit area of 5-500 g/mthrough an adhesive layer 3.

Description

  The present invention relates to a cosmetic flexible sheet that can be used for cosmetic application and wiping, and a method for producing the same.

  Conventionally, in order to apply makeup cosmetics such as lip color, eye color, and foundation to the skin, sponge puffs and flocky puffs in which short fibers of about 1 mm are electrostatically flocked to similar sponges are often used. Yes.

  However, since such puffs (including flocky puffs) have a large volume, there is a problem in that even if a thin portable cosmetic is prepared for travel or the like, the puffs are bulky and cannot be put together. is there. In addition, as a cosmetic sample for free distribution to customers, when preparing a simple sample case containing a small amount of cosmetics and a puff, the sample case is more compact than the main cosmetic. There is also a problem that cannot be done. Furthermore, the above-mentioned puff is relatively expensive, and it is not economical to be disposable every time. However, if it is used repeatedly, there is a problem that it is not preferable in terms of hygiene depending on the storage state during that time.

  On the other hand, it has been proposed to use a disposable non-woven fabric sheet instead of tissue paper or cotton for wiping off cosmetics or applying the skin lotion to skin (see Patent Documents 1 and 2, etc.).

JP 2003-95868 A JP 2009-297535 A

  Therefore, it is conceivable to use such a thin and inexpensive non-woven sheet as a disposable puff instead of a conventional puff for applying makeup cosmetics. It turned out that a high makeup cosmetic material penetrates between the fibers of the non-woven fabric sheet, hardly moves toward the skin, and cannot be applied smoothly. For this reason, development of a completely new sheet that can smoothly apply makeup cosmetics to the skin is strongly desired.

  The present invention has been made in view of such circumstances, and various cosmetics including high-viscosity makeup cosmetics are applied to the skin, or the cosmetics are wiped off from the skin or stained with cosmetics, etc. It is an object of the present invention to provide a completely new disposable flexible sheet for cosmetics and a method for producing the same, which are suitable for cleaning cosmetic tools.

In order to achieve the above object, the present invention is a flexible sheet used in cosmetics, wherein an adhesive layer is provided on at least one surface of a non-woven fabric having a basis weight of 5 to 500 g / m ² . The first gist is a decorative flexible sheet provided with a pile layer formed by electrostatically flocking short fibers having an average single yarn fineness of 0.6 to 60 dtex and a length of 0.3 to 5 mm.

  The second gist of the present invention is, in particular, a cosmetic flexible sheet in which the short fibers constituting the pile layer are water-repellent.

And this invention is a manufacturing method of the flexible sheet for makeup | decoration which is the said 1st summary, Comprising: The base material which consists of a nonwoven fabric with a fabric weight of 5-500 g / m < ² >, average single yarn fineness 0.6-60 dtex, length A step of preparing 0.3 to 5 mm short fibers, a step of applying an adhesive on one or both sides of the base material to form an adhesive coating layer, and the adhesive coating layer, A method for producing a flexible sheet for cosmetics, comprising a step of pre-drying to such an extent that adhesiveness is not lost, and a step of forming a pile layer by electrostatically flocking the short fibers to the substrate after the pre-drying. This is the third gist.

  Furthermore, among the above, the fourth aspect of the present invention is a method for producing a decorative flexible sheet in which the short fibers forming the pile layer are subjected to water repellent finishing.

  In the present invention, the above-mentioned “makeup-related” is not limited to the so-called makeup operation in which the cosmetic is applied to the skin or the cosmetic is wiped off from the skin, but in order to help penetration of the cosmetic into the skin. This includes all acts related to makeup, such as an act for the purpose of skin care that touches a sheet, and an act of cleanly wiping cosmetic containers and cosmetics that are soiled with cosmetics.

  That is, the decorative flexible sheet of the present invention includes a base material made of a specific nonwoven fabric, an adhesive layer, and a specific pile layer. According to this structure, since the whole is a flexible and thin sheet shape, it is not bulky and can be stored compactly, and can be disposable at a low cost at a time. And the cosmetics can be apply | coated to skin using the pile layer of the surface, or cosmetics can be wiped off from skin conversely. Further, it can be used as a cleaning tool for wiping cleanly a cosmetic container or a brush soiled with a cosmetic or the like.

  In the present invention, in particular, a cosmetic flexible sheet in which the water repellent finish is applied to the short fibers constituting the pile layer is used when applying a cosmetic using the sheet. Since the cosmetics held in the layer move to the skin side more smoothly, it has an advantage that a particularly excellent feeling of use can be obtained.

  Moreover, according to the manufacturing method of this invention, the said flexible sheet for makeup | decoration can be manufactured easily and efficiently. In particular, in this production method, after forming an adhesive coating layer on one or both sides of the substrate, it is pre-dried to such an extent that the adhesiveness of the adhesive coating layer is not lost, and then the short fibers are electrostatically implanted. Therefore, this pre-drying prevents most of the adhesive coating layer from penetrating into the nonwoven fabric, and keeps a certain adhesive coating layer on the substrate surface to contribute to fixing of short fibers. I am doing so. Therefore, it is possible to use a nonwoven fabric that has been conventionally unsuitable as a base material for electrostatic flocking as a base material for a pile layer, and as a whole, it is possible to obtain a flexible, thin and easy-to-use cosmetic flexible sheet. It came to be.

  Furthermore, among the production methods of the present invention, in particular, the short fibers forming the pile layer are subjected to water repellent treatment, and the cosmetics retained in the pile layer of the sheet are more smoothly applied to the skin side. Since a decorative flexible sheet that can be transferred to a pouch can be obtained, it is particularly suitable for obtaining a puff-use sheet.

It is a typical fragmentary sectional view showing one embodiment of the present invention. It is explanatory drawing of an example in the case of using the said one Embodiment as a disposable puff. It is explanatory drawing of an example in the case of using the said one Embodiment as a cosmetics sample.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic partial cross-sectional view showing an embodiment of a decorative flexible sheet of the present invention. This decorative flexible sheet 1 includes a base material 2 made of nonwoven fabric, an adhesive layer 3 provided on the surface thereof, and a pile layer 4 made of short fibers grouped by electrostatic flocking (so-called flocking process). ing.

  The non-woven fabric of the substrate 2 is a sheet formed by entwining or bonding fibers to each other, and it is necessary to have flexibility that allows the fibers to follow the skin. Examples of the fiber to be used include polyolefins such as polypropylene and polyethylene, polyester, polyurethane, rayon, vinylon, polyamide, acrylic, cotton, wool, and the like. Of these, polypropylene, polyester, polyurethane, cotton and the like are suitable for obtaining a good feeling of use. These may be used alone or in combination of two or more. And when using 2 or more types together, mixed fiber and a mixed fiber can also be used besides just mixing 2 or more types of fibers.

  The thickness of the fibers used in the nonwoven fabric should be as long as the flexibility of the resulting nonwoven fabric is not impaired. For example, it is preferable to use one having an average single yarn fineness of 1 to 200 dtex, especially 3 to 120 dtex. . That is, if the fiber is too thin, there may be a problem in strength if the thickness is not considerably increased. Conversely, if the fiber is too thick, the flexibility of the nonwoven fabric may be reduced.

  In addition, as the form of the above-mentioned fiber as a sheet-like nonwoven fabric, there are a chemical bond method, a thermal bond method, a needle punch method, a hydroentanglement method, and the like. is there.

The basis weight of the nonwoven fabric, it is necessary to set the 5 to 500 g / m ^2, inter alia, it is preferable to set the 7~300g / m ^2. That is, if the basis weight is too small, depending on the fiber used, the strength of the nonwoven fabric may be reduced. Conversely, if the basis weight is too large, the flexibility of the nonwoven fabric may be reduced.

  Moreover, the adhesive layer 3 provided on the surface of the base material 2 made of the nonwoven fabric is used for forming the pile layer 4, and the base portion of the short fiber which is a constituent material of the pile layer 4 is used as the base material. It plays the role of fixing to the two sides. Examples of the adhesive used for the adhesive layer 3 include acrylic, epoxy acrylic, urethane, ethylene vinyl acetate copolymer, polyester, polyimide, and the like. Depending on the case, it is used appropriately. For example, when the short fiber is polyamide, it is preferable to use an acrylic adhesive or an epoxy adhesive.

And the thickness of the adhesive layer 3 needs to have a thickness that can sufficiently fix the root portion of the short fiber, and in consideration of the fact that part of the adhesive penetrates from the nonwoven fabric surface, In the state (wet state), it is preferable that the coating amount is 50 to 200 g / m ² . If the adhesive layer 3 is too thin (that is, the basis weight of the coating amount is too small), the short fibers of the pile layer 4 cannot be sufficiently fixed and held, and the short fibers may fall off during use. In addition, if the adhesive layer 3 is too thick (that is, the basis weight of the coating amount is too large), the flexibility of the entire sheet is impaired and the usability may be deteriorated.

  The pile layer 4 provided on the adhesive layer 3 is integrally attached to the base material 2 via the adhesive layer 3, and the root portion of the short fiber constituting the pile layer 4 is electrostatically Each one is stuck and fixed on the adhesive layer 3 by flocking.

  Examples of the short fiber constituting the pile layer 4 include polyamide, polyester, polyethylene, acrylic, rayon and the like, and they may be used alone or in combination of two or more. Moreover, it may be a monocomponent monofilament, or may be a split type composite fiber that has a fineness by splitting and subdividing, for example. When split-type composite fibers are used, the fibers are physically or chemically divided after flocking.

  The short fibers need to have an average single yarn fineness of 0.6 to 60 dtex and a length of 0.3 to 5 mm. That is, if the average single yarn fineness of the short fibers is too small, the short fibers are difficult to be fixed, and the holding performance of cosmetics or the wiping performance of cosmetics is poor. Conversely, the average single yarn fineness is large. Even if it is too much, the holding performance of the cosmetic or the wiping performance of the cosmetic will be poor, and the touch to the skin will be poor. Of these, those having an average single yarn fineness of 0.9 to 3 dtex are suitable for ease of use.

  Further, if the length of the short fiber is shorter than the above range, the effect of providing the pile layer 4 and using it for the application or wiping of the cosmetic is poor, and conversely, if longer than the above range, This is because the merit of replacing the sponge type is lost. From these points, those having a length of 0.4 to 3 mm are particularly suitable.

The decorative flexible sheet 1 can be manufactured, for example, as follows. That is, first, a base material 2 made of a nonwoven fabric having a basis weight of 5 to 500 g / m ² and short fibers having an average single yarn fineness of 0.6 to 60 dtex and a length of 0.3 to 5 mm are prepared.

  Next, the adhesive is applied to the surface of the substrate 2 with a predetermined basis weight, and preliminary drying is performed. At this time, although the drying conditions depend on the type of adhesive and the coating amount, it is necessary that the surface of the adhesive coating layer be dried to such an extent that the adhesiveness is not lost.

  Thus, by attaching the base material 2 on which the adhesive coating layer is formed on the ground electrode of the electrostatic flocking device and supplying the short fibers while applying a high voltage, the short fibers Is piled into the adhesive coating layer and held vertically to form the pile layer 4 (see FIG. 1). And the flexible sheet 1 for makeup | decoration of this invention can be obtained by further drying the base material 2 in which the pile layer 4 was formed through the said adhesive agent coating layer.

  The obtained decorative flexible sheet 1 is cut into an appropriate size and shape according to the application. For example, when used as a disposable puff for applying makeup cosmetics such as foundation, eye color, lip color, etc., a rectangular sheet piece having a length of about 30-60 mm and a width of about 15-50 mm as shown in FIG. And can be provided in a thin sample container together with a sample makeup cosmetic sample.

  In addition, as a portable puff for going out and traveling, a plurality of sheets are stored as a set in a plastic bag or container and sold separately from cosmetics, or cut into relatively large dimensions, As wiping off, it can be sold as such or in combination with a wiping cosmetic.

  Furthermore, by cutting into a predetermined shape, it can be used for applications such as a face mask, an eye mask, and an eye mask.

  Further, as shown in FIG. 3, a makeup sample 5 such as a foundation is thinly applied and held on the surface of the pile layer 4 of the flexible sheet for makeup 1 of the present invention so that the sample itself is a cosmetic sample. Can be offered. According to this, the operation of applying the makeup cosmetic 5 to the puff is unnecessary, and the portion of the sheet 1 where the makeup cosmetic 5 is held is rubbed against the skin, so that the makeup cosmetic 5 is directly applied. Can be applied. In this case, it is preferable to leave a portion of the sheet 1 where the makeup cosmetics 5 are not held with a predetermined width so that makeup can be performed without soiling the fingers.

  Thus, since the makeup | decoration sheet 5 which hold | maintained the makeup cosmetics 5 in the makeup | decoration flexible sheet 1 is the whole thin sheet form and is not bulky, it wraps in a sheet form and sends it to a customer by direct mail, storefront, Convenient to distribute on the street. It can also be provided in a magazine or pamphlet. Of course, it can also be sold as a portable or trial product.

  Further, a wiping lotion, a cooling gel, a moisturizing gel or the like can be sealed and packaged in a state of impregnating or adhering to the cosmetic flexible sheet 1 of the present invention, and can be provided for samples or for portable use.

  In the cosmetic flexible sheet 1 of the present invention, when used to apply makeup cosmetics like a puff, or when provided with the makeup cosmetics 5 applied as shown in FIG. It is preferable that the short fibers forming the pile layer 4 are subjected to water repellent finishing. That is, the cosmetics physically held between the short fibers of the pile layer 4 by the above water-repellent finish move smoothly to the skin side by pressing the pile layer 4 against the skin. It has the advantage that the coating of the material is very easy to do.

  The water repellent finish may be applied to the short fibers themselves before forming the pile layer 4 by electrostatic flocking, or the pile layer 4 may be subjected to water repellent finish after the pile layer 4 is formed. Good. In addition, as a processing agent for water-repellent processing, a fluorine-type processing agent and a silicon-type processing agent are used suitably.

  On the contrary, when the cosmetic flexible sheet 1 of the present invention is used in combination with a hydrophilic gel or lotion (when used for a face mask, etc.), it is preferable to make the pile layer 4 hydrophilic. It is. In that case, hydrophilic short fibers may be used, or hydrophilic processing may be performed.

  And in said example, although the pile layer 4 was formed through the adhesive bond layer 3 in the single side | surface of the base material 2 in the flexible sheet | seat 1 for makeup | decoration, depending on the case, the adhesive bond layer 3 was formed in both surfaces of the base material 2. However, the pile layer 4 may be formed on the front and back surfaces.

  Next, examples of the present invention will be described together with comparative examples. However, the present invention is not limited to the following examples.

[Example 1]
First, as a base material, a non-woven fabric having a basis weight of 80 g / m ² (a web made of polypropylene monofilament having an average single yarn fineness of 1.11 dtex was made into a non-woven fabric by a needle punch method) was prepared. In addition, short fibers made of polypropylene monofilament having an average single yarn fineness of 1.67 dtex and a length of 1 mm were prepared.

Next, after the acrylic adhesive is applied to the surface of the substrate with a basis weight of 100 g / m ² , this is subjected to preliminary drying at 60 ° C. for 5 minutes, and the adhesiveness of the adhesive coating layer is impaired. It was dried to the extent that

And the base material in which the said adhesive agent coating layer was formed was mounted | worn with the electrostatic flocking apparatus, electrostatic flocking was performed, and the pile layer was formed. Then, a water repellent treatment was performed by adhering a fluorine-based water repellent to the pile layer at a weight ratio of 50 g / m ² (dry weight). In this way, the intended decorative flexible sheet was obtained.

[Examples 2-11, Comparative Examples 1-6]
As shown in Tables 1 to 5 below, the configuration was changed. Other than that was carried out similarly to the said Example 1, and obtained the target flexible sheet for makeup | decoration.

Example 12
No water repellent treatment was performed after the pile layer was formed. Other than that was carried out similarly to Example 1, and obtained the target flexible sheet for makeup | decoration.

[Comparative Example 7]
After forming the adhesive coating layer on the substrate surface, the preliminary drying process was not performed, and electrostatic flocking was performed while the adhesive was wet. Other than that was carried out similarly to Example 1, and obtained the target flexible sheet for makeup | decoration.

  About these Examples 1-12 goods and Comparative Examples 1-7 goods, the following each item was evaluated in accordance with the following method. The results are also shown in Tables 1 to 5 below.

[Short fiber missing or not]
A foundation (sample foundation color, manufactured by Kanebo Cosmetics Co., Ltd.) was attached to the surface of the sample (flexible sheet for makeup), and this was applied to the back of the hand by rubbing it back and forth. Then, while counting the number of reciprocations, the number of reciprocal piles was observed and evaluated as follows.
A: There was no dropout of the pile even after exceeding 50 round trips.
○: The piles dropped out by 50 round trips, but the number was very small and unnoticeable.
Δ: The pile has fallen by 50 round trips, and the fall off pile is slightly noticeable.
X: Many piles dropped out by 50 round trips, and the dropped piles were very conspicuous.

[Overall flexibility, feel to skin, ease of application of cosmetics]
After applying the same foundation as described above to the face of each of the 15 professional monitors using each cosmetic flexible sheet, each of the above items was subjected to sensory evaluation in the following four stages. The evaluation of the largest number of people was taken as the evaluation.
◎… very good ○… good △… normal ×… bad

  From these results, it can be seen that Examples 1 to 12 are generally good in all items and are used in place of conventional puffs. On the other hand, it can be seen that Comparative Examples 1 to 7 have an evaluation of “x” (= defect) in any item and cannot be put to practical use.

  The present invention is a disposable that can apply various cosmetics to the skin, including makeup cosmetics with high viscosity, wipe off the cosmetics from the skin, or clean cosmetics soiled with cosmetics, etc. It is suitably used for a type of flexible sheet for makeup.

1 flexible sheet for makeup 2 base material 3 adhesive layer 4 pile layer

Claims (4)

It is a flexible sheet used for makeup-related, and has an average single yarn fineness of 0.6 to 60 dtex and a length through an adhesive layer on at least one surface of a non-woven fabric having a basis weight of 5 to 500 g / m ^2. A decorative flexible sheet, wherein a pile layer is formed by electrostatically flocking 0.3 to 5 mm short fibers.   The flexible sheet for makeup according to claim 1, wherein the short fibers constituting the pile layer are subjected to water repellent finish. It is a manufacturing method of the flexible sheet for makeup | decoration of Claim 1, Comprising: The base material which consists of a nonwoven fabric with a basis weight of 5-500 g / m < ² >, the average single yarn fineness of 0.6-60 dtex, and the short fiber of length 0.3-5 mm And a step of forming an adhesive coating layer by applying an adhesive on one or both sides of the base material, and the adhesive coating layer so as not to lose its adhesiveness. A method for producing a decorative flexible sheet, comprising: a step of drying; and a step of forming a pile layer by electrostatically flocking the short fibers to the substrate after the preliminary drying.   The method for producing a decorative flexible sheet according to claim 3, wherein the short fibers forming the pile layer are subjected to water repellent finishing.

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