JP2001058924A - Sheetlike cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a sheetlike cosmetic capable of improving the fitness when applied to the face without any sense of incompatibility such as a tense feeling at the time of use especially with a slight difference between a pair of left and right parts when used as the pair. SOLUTION: This sheetlike cosmetic is in the form of a pair of left and right parts applied to the face and is composed so that the value of the ratio of the respective elongations in the longitudinal and transverse directions when applied to the face is (1/4) to 4 when measuring the elongations for a striplike sample having 50 mm width under 1 N load in the sheetlike cosmetic comprising a base fabric having the stretchability and a plaster composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-like cosmetic which is used by being adhered to the face for the purpose of eye care and the like, and a method for producing the same.

[0002]

2. Description of the Related Art Various types of sheet-like cosmetics have been proposed in which a patch composition layer containing a whitening component, a humectant and the like is formed on a base fabric such as a nonwoven fabric having elasticity that is adhered to the face. . For example, there has been known a shape having a substantially L-shaped concave portion intended for use in an eye area. These sheet-shaped cosmetics are used for the purpose of improving the bulk of the skin, fine lines, dark circles, dullness, etc., but since the face has complicated unevenness compared to other parts of the body, it performs various movements. ,
The wearing feeling at the time of sticking is not always sufficient, and sometimes gives a sense of incongruity such as a tight feeling when used. In particular, when the way of expansion and contraction differs between the left and right sheets, the sense of discomfort was even greater.

[0003]

DISCLOSURE OF THE INVENTION The present invention improves the fitting property when affixed to the face, and does not cause discomfort such as a tight feeling when used. An object of the present invention is to provide a sheet-shaped cosmetic having a small difference in use feeling.

[0004]

According to the present invention, there is provided a sheet-like cosmetic comprising a stretchable base cloth and a patch composition, wherein the sheet-like cosmetic is attached to the face in a pair of left and right sides. Then, when the elongation ratio in the vertical direction and the lateral direction when affixed to the face was measured for a 50 mm wide strip sample at 1 Newton load, the value of each elongation ratio was 1/4 to The sheet-shaped cosmetic is constituted so as to be No. 4.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, an elastic material is used as a material constituting a base fabric of a sheet-like cosmetic. As a material constituting the base fabric, a sheet-like cosmetic obtained by forming a patch composition layer on the base fabric by impregnation or application, etc., has a specific elongation ratio in the vertical and horizontal directions. There is no particular limitation as long as it has the above specific value.
For example, any of knitted fabrics such as flannel and sfumov, woven fabrics, various nonwoven fabrics, paper, plastics and the like can be used.

[0006] As a preferable material constituting the base fabric, a nonwoven fabric having elasticity can be cited. Although the material of the nonwoven fabric is not particularly limited, it is preferable that the nonwoven fabric is a thermoplastic fiber alone or a blend of a thermoplastic fiber and a non-thermoplastic fiber. As the thermoplastic fiber, polyester fiber, polyethylene fiber, polypropylene fiber, polyamide fiber, polyvinyl chloride fiber, polyvinyl alcohol fiber and the like,
These may be used alone or as a mixture of two or more.
Non-thermoplastic fibers include rayon, cupola, hemp, silk and the like. The method for producing a nonwoven fabric using these fibers is not particularly limited. For example, a fiber obtained by combining two types of resins having different heat shrinkage rates is entangled and integrated by a needle punch method, a hydroentanglement method, and the like, and is subjected to a heat treatment. There is a method of causing heat shrinkage to make the film elastic.

Above all, heat-shrinkable fibers obtained by combining two kinds of resins having different heat-shrinkage rates are integrated by a hydroentanglement method,
The nonwoven fabric which has been stretched by heat shrinkage by heating has the stretchability required for the sheet-like cosmetic of the present invention, has no fluff, has an appropriate thickness when forming the patch composition layer (gel), and It is particularly preferable because the oozing of the gel during storage can be suppressed. As the nonwoven fabric used as the base fabric, one having a basis weight of about 60 to 200 g / m ² , preferably 70 to 110 g / m ² is used. If the basis weight of the nonwoven fabric is small, the patch composition layer may ooze out. On the other hand, if the basis weight is too large, the nonwoven fabric becomes thick when applied to the face, giving an annoying feeling.

[0008] Conventional sheet-like cosmetics usually use a base fabric made of a material having no elasticity.
When applied to the face, a sense of incongruity such as a tightness is generated on the face. Further, even in sheet-like cosmetics using a stretchable base fabric, those having different stretch rates in the vertical and horizontal directions are used, and when applied to the face, there is a difference in stretchability. Gives a sense of discomfort from the Here, the difference between the vertical and horizontal elongation rates tends to occur in the moving direction of the raw sheet and in the direction perpendicular thereto. For example, in producing a sheet-like cosmetic that is attached to the face in a pair of left and right sides, in order to reduce the waste of the material constituting the raw sheet and to increase the working efficiency, FIG. It is preferable to employ a cutting step. In this case, the obtained left sheet 2 and right sheet 3 are attached to the face with the hatched portion as the lower side in the horizontal direction, as shown in FIG. The relationship in the horizontal direction is reversed. Therefore, when the moving direction of the sheet indicated by an arrow in the drawing is the vertical direction and the direction orthogonal to the horizontal direction is the horizontal direction with respect to the raw sheet, the ratio of the elongation rate of the raw sheet is vertical / When the horizontal direction = 1/5, the ratio of the elongation ratio of the left sheet is vertical / horizontal = 1/5, but the ratio of the elongation ratio of the right sheet is vertical / horizontal = 5. This causes a difference in the feeling of use on the left and right, giving a sense of incongruity. On the other hand, in the present invention, when the elongation ratio in the longitudinal direction and the lateral direction when the sheet-shaped cosmetic material is adhered to the face is measured for a 50-mm-wide strip-shaped sample at a load of 1 Newton, respectively, By making the value of the ratio of the elongation ratio 1/4 to 4, preferably 1/3 to 3, the difference in the elasticity in both directions of the sheet-shaped cosmetic is reduced, and the fit when attaching to the face is improved. In addition to improving the feeling, it is possible to eliminate discomfort during use.

[0009] In particular, when the sheet-like cosmetic is constituted so that the elongation rate in the vertical and horizontal directions when the sheet-like cosmetic is applied to the face is 2 to 30%, the sheet-like cosmetic is used. To give a moderate elasticity to further improve the fit and the feeling of use when sticking.

A known elastic patch having a plaster portion on an elastic base cloth (for example, JP-A-3-161431)
Is applied to joints such as elbows and knees for therapeutic purposes such as analgesia and anti-inflammation, unlike the sheet-like cosmetic of the present invention. These have extremely high elasticity in a specific direction, and are attached to a portion where a large load is applied due to the movement of an arm or a leg, and have a completely different manner of expansion and contraction from the sheet cosmetic of the present invention. Things. In contrast, the sheet-shaped cosmetic of the present invention is applied to the face for the purpose of skin care or the like, and the ratio of the elongation ratio in the vertical direction and the horizontal direction when the sheet-shaped cosmetic is applied to the face is determined. By being specific, the intended purpose can only be achieved.

Hereinafter, this point will be further described with reference to the drawings. FIG. 1 is a diagram showing the elongation rate in the vertical direction and the elongation rate in the horizontal direction in the sheet-like cosmetic of the present invention. In FIG. 1, the vertical axis represents the elongation rate (%) in the vertical direction when the sheet-shaped cosmetic is stuck to the face, and the horizontal axis also represents the horizontal elongation rate (%). Each elongation rate is, as shown below, a standard value measured with a 1N load on a 50 mm wide strip sample. Line A represents the vertical extension ratio / lateral extension ratio = 4, line B represents the vertical extension ratio / lateral extension ratio = 1, and line C represents the vertical extension ratio / lateral extension ratio = 1/4. The sheet-like cosmetic of the present invention has a vertical and horizontal elongation ratio within a range sandwiched between the line A and the line C in FIG. 1, and is particularly preferably in a range indicated by oblique lines. .

In the present invention, the elongation rate of the sheet cosmetic is measured as follows. (Measurement method) A rectangular test piece having a width of 50 mm and a length of 200 mm was cut from a raw sheet constituting a sheet-shaped cosmetic, and a peeling sheet was peeled off at a temperature of 20 ° C. using a tensile strength tester (Tensilon). The elongation rate is measured. The test piece for measuring the elongation rate of the sheet-shaped cosmetic material in the longitudinal direction was prepared such that when the sheet-shaped cosmetic material was adhered to the face, the lengthwise side of the test piece was the long side (200 mm). Cut from anti-sheet. The test piece for measuring the elongation rate in the lateral direction of the sheet-like cosmetic was 90 ° with respect to the test piece in the vertical direction.
When changing the angle and sticking the sheet cosmetic on the face,
Cut the raw sheet so that the side that becomes the horizontal direction becomes the long side of the test piece. Both ends of the long side of the test piece formed in this manner are sandwiched between chucks so that the length (test length) of the measuring portion becomes 150 mm, and the test piece is stretched at a pulling speed of 300 mm / min to obtain a test length (mm) under a 1N load. ) Is measured, and the elongation rates in the vertical and horizontal directions are respectively calculated by the following equations. Elongation rate (%) = (Test length under 1N load-150) / 150
× 100 In the case of sampling from an actual sheet-shaped cosmetic product, the above test piece of 50 mm × 200 mm may not be collected. In that case, a strip-shaped sample is cut out as much as possible, and a load at the time of measurement (a load corresponding to 1 N per 50 mm) and a pulling speed (elongation speed of 200%) according to each sample width and test length (distance between chucks). / Min).

FIG. 2 is a diagram showing a use state of one example of the sheet cosmetic of the present invention. The sheet-shaped cosmetic 1 having a substantially L-shaped concave portion is composed of a pair of a left sheet 2 and a right sheet 3, and is adhered, for example, from below the eyes to the periphery of the outer corner of the eye as shown in FIG. Is done. When sticking to the face, one side of the sheet 2 or 3 is held with both hands or one hand. When held with both hands, the load (tensile force) applied to the sheet 2 or 3 is usually about 1N. In the present invention,
By setting the ratio of the elongation ratio in the horizontal direction to the elongation ratio in the vertical direction of the sheet-shaped cosmetic material to be 1/4 to 4, preferably 1/3 to 3, the difference in elasticity in both directions of the sheet-shaped cosmetic material is reduced. In addition, it is intended to improve the fitting property when sticking to the face and to eliminate discomfort during use. It is preferable that the ratio of the elongation ratios in both directions be as close to 1 as possible, that is, close to the line B in FIG.

Further, in the present invention, the elongation ratio of the 50 mm wide sheet-shaped cosmetic material in the vertical and horizontal directions under a load of 1 N is set to 2-3.
It is preferably set to 0%. The face has complex irregularities not found in other parts of the body, makes various movements, and is extremely sensitive. When the elongation ratio in the vertical and horizontal directions at the time of 1N load of the sheet-shaped cosmetic is in the above range,
Good fit and adhesion at the time of sticking, and not too long,
It does not cause a sense of incongruity such as a tightness during sticking, and is easy to peel off from the face after use. Further, when producing a sheet-like cosmetic, the workability in the laminating step, the cutting step, the aging step of the sheet-like cosmetic is improved, and after the cutting, the base fabric, the patch composition layer, and the release sheet are removed. Almost no layer displacement occurs.

FIG. 3 is a view for explaining the cutting step of the sheet-like cosmetic of FIG. FIG. 3A is a diagram showing a preferred cutting step of the present invention, and FIG. 3B is a diagram showing a control example. In FIG. 3, reference numerals 1 and 11 denote a pair of left and right sheet-like cosmetics, reference numerals 2 and 12 denote a left sheet, reference numerals 3 and 13 denote a right sheet, and reference numerals 4 and 14 denote a raw sheet constituting the sheet-like cosmetic. And the arrow indicates the direction of movement of the raw sheet. These sheet-shaped cosmetics are
At the time of use, it is stuck on the face with the shaded portion facing downward in the horizontal direction.

In FIG. 3A, the sheet-like cosmetic 1 is
From the raw sheet 4 having a patch composition layer formed on a base cloth,
The left sheet 2 is approximately 90 ° with respect to the right sheet 3 based on the use state of the sheet-like cosmetic 1 as shown in FIG.
It is cut in a state where it is rotated so as to fit into the L-shaped recess. The sheet-like cosmetic is cross-linked and aged in a state where the normally cut left sheet 2 and right sheet 3 are put in a small bag as a pair one by one.
(A), when each sheet is cut, the adjacent left sheet 2 and right sheet 3 can be sequentially wrapped in a small bag along the moving direction of the raw sheet, and the raw sheet can be wrapped. The laminating step, the cutting step, the packaging step, the aging step, etc. can be performed continuously, and the working efficiency is improved.

On the other hand, when the sheet-shaped cosmetic 11 is cut in the state shown in FIG. It is necessary to wrap the left sheet 12 and the right sheet 13 located in a pair as a pair and the left sheet 12 and the right sheet 13 located below the raw sheet 14 as a pair. Work becomes complicated, and the work efficiency is significantly reduced. Therefore, in order to reduce the waste of the material constituting the raw sheet and increase the working efficiency, it is preferable to employ the cutting step of FIG.

When an original fabric sheet of a sheet-like cosmetic is formed by using a stretchable base fabric, tension is applied in the moving direction of the original fabric sheet indicated by an arrow in the above cutting step. In a subsequent cross-linking and aging step, the sheet tends to shrink and deform in the moving direction of the raw sheet. In the sheet-shaped cosmetic of the present invention, by setting the ratio or the elongation of the sheet-shaped cosmetic to the elongation in the horizontal direction and the elongation in the vertical direction in a specific range, this shrinkage deformation can be extremely reduced. Sheet-like cosmetics having almost no difference in the shapes of the left and right sheets after crosslinking and aging can be obtained. Therefore, the appearance of the sheet-shaped cosmetic is good, the commercial value is not reduced, and the fit and usability at the time of sticking to the face are excellent.

The patch composition impregnated or coated on the base fabric in the present invention is not particularly limited. For example, kaolin, talc,
Inorganic powders such as bentonite, titanium dioxide and zinc oxide are used as excipients, and water-soluble polymer compounds: glycerin,
Moisturizers such as sorbitol and polyethylene glycol: Usable ones such as paste-like plasters obtained by kneading water and skin beautiful ingredients, other medicinal ingredients, oil ingredients and the like are used.

The sheet cosmetic of the present invention is obtained by impregnating or applying a patch composition obtained by mixing the above components on a base cloth such as a nonwoven fabric, and further, if necessary, facing (peeling sheet). The method of applying, or applying the patch composition on a peelable sheet, the raw fabric constituted by a method of combining a nonwoven fabric,
It can be manufactured by cutting to predetermined dimensions. Here, as the peelable sheet, a plastic film such as polyethylene, polypropylene, and polyester can be used.

When the sheet-like cosmetic of the present invention is to be applied to the face in a pair of right and left, a broad bean type as shown in FIG. 2, an L-shape as shown in FIG. It is preferably a half-moon shape or the like. It is preferable to adopt such a shape because the fit from the lower part of the eyes to the periphery of the outer corner of the eye is improved. Further, the sheet-like cosmetic of the present invention can be applied not only to eye care but also to the nasolabial fold.

The sheet-like cosmetic of the present invention is usually used after the face has been washed and if necessary the skin is adjusted with a lotion and then applied to the face for about 15 minutes to 1 hour. Further, the sheet-shaped cosmetic of the present invention may be attached to the face at bedtime and peeled off at the time of getting up. By adhering the sheet-like cosmetic of the present invention to the face, it is possible to improve the bulkiness of the skin due to drying or the like, fine lines, bears, dullness, etc., and to give moisture and firmness to the face in a concentrated manner.

[0023]

In the following examples, a patch composition was prepared by the following formulation and manufacturing method. <Production method of patch composition> (Components) (% by weight) 1) Isostearyl glyceryl ether 2.0 2) Sodium polyacrylate 6.0 3) Polyacrylic acid 2.5 4) Glycerin 25.0 5) Myristine Isopropyl acid 2.0 2.0 6) Squalane 4.0 7) Aluminum hydroxide gel 0.2 8) Light anhydrous silica 2.0 9) Polysorbate 2.0 10) Purified water Balance

<Production method of patch composition> Using a kneader, a part of the above components 1), 4), 5), 6) and 10) are uniformly mixed, and components 2), 3) and 7) are mixed. Was added, and the mixture was uniformly kneaded, the rest of components 8), 9) and 10) were added, and the mixture was further uniformly kneaded to produce a patch composition.

(Examples 1 to 4, Comparative Examples 1 to 4) The above composition was applied on a polyester release film, a nonwoven fabric was covered from above, and after aging, it was cut into the shape shown in FIG. 3 (A). As the nonwoven fabric, those having the production method, composition and properties shown in Table 1 were used to obtain a sheet-like cosmetic having a substantially L-shaped shape having the elongation rate shown in Table 2.

[0026]

[Table 1]

[0027]

[Table 2]

FIG. 4 shows the elongation characteristics of each of the obtained sheet-like cosmetics. In FIG. 4, the hatched portions indicate the range of the sheet-shaped cosmetic of the present invention, and the A-line, B-line,
The line C has the same meaning as in FIG. The properties of each sheet-shaped cosmetic were evaluated as follows. (Evaluation of Use) Using 20 Japanese women aged 20 to 35 years as panelists, the adhesiveness and the sense of incongruity when each sheet-shaped cosmetic was used as shown in FIG. 2 were evaluated by a panel test. The results were evaluated on a three-point scale, in which excellent was evaluated as ○, slightly inferior in Δ, and inferior in X, and the average was shown in Table 2. (Production Evaluation) In addition, regarding the production, the displacement between the sheet-like cosmetic layer after production and the release sheet layer was also evaluated. When there was no problem, the results were evaluated in three stages, where ○ indicates that there was no problem, Δ indicates that there was a slight deviation, and X indicates that there was a large deviation. The results are shown in Table 2.

According to these results, the sheet-like cosmetics of the present invention of Examples 1 to 4 had good adhesiveness when applied to the face and did not give a feeling of discomfort. Further, there was no displacement of each material constituting the sheet at the time of manufacturing.

[0030]

EFFECT OF THE INVENTION The sheet-shaped cosmetic of the present invention has excellent fit when attached to the face, has good adhesion to the face, does not have a sense of incongruity such as a tight feeling, and has good peelability after use. It is excellent, and there is almost no difference in the shape and feeling of use of the left and right sheets. Further, according to the method for producing a sheet-shaped cosmetic according to the present invention, it is possible to prevent waste of materials constituting the sheet-shaped cosmetic, and to perform operations in a laminating step, a cutting step, an aging step, and the like during the production of the sheet-shaped cosmetic. The properties are also good, and after the cutting, the base fabric, the patch composition layer and the release sheet layer do not shift or deform.

[Brief description of the drawings]

FIG. 1 is a diagram showing the elongation rate in the vertical direction and the elongation rate in the horizontal direction in the sheet-like cosmetic of the present invention.

FIG. 2 shows an example of the sheet cosmetic of the present invention,
It is a figure which shows the use condition of a sheet-shaped cosmetic.

FIG. 3 is a diagram illustrating a step of cutting the sheet-like cosmetic of the present invention from a raw sheet.

FIG. 4 is a diagram showing the elongation characteristics of the sheet cosmetics of the examples and comparative examples.

[Explanation of symbols]

 1,11 Sheet-shaped cosmetics 2,12 Left sheet 3,13 Right sheet 4,14 Raw sheet

Continued on the front page (72) Inventor Machiko Yokoyama 2606, Akabane, Kaigamachi, Haga-gun, Tochigi Prefecture Kao Co., Ltd. In the laboratory

Claims (3)

[Claims] 1. A sheet-like cosmetic comprising a stretchable base fabric and a patch composition, wherein the sheet-like cosmetic is in a shape to be adhered to the face in a pair of right and left, and is adhered to the face. When the elongation rate in the vertical and horizontal directions is 50 m each
A sheet-like cosmetic having a ratio of elongation ratio of 1/4 to 4 when a strip-shaped sample having a width of m is measured at a load of 1 Newton. 2. The sheet-shaped cosmetic according to claim 1, wherein the elongation percentage in the vertical and horizontal directions when the sheet-shaped cosmetic is adhered to the face is 2 to 30%, respectively. 3. The sheet-shaped cosmetic according to claim 1, wherein a peelable sheet is formed on the patch composition.