WO2018186306A1 - Liquid foundation cosmetic applicator, and production method for said cosmetic applicator - Google Patents

Liquid foundation cosmetic applicator, and production method for said cosmetic applicator Download PDF

Info

Publication number
WO2018186306A1
WO2018186306A1 PCT/JP2018/013794 JP2018013794W WO2018186306A1 WO 2018186306 A1 WO2018186306 A1 WO 2018186306A1 JP 2018013794 W JP2018013794 W JP 2018013794W WO 2018186306 A1 WO2018186306 A1 WO 2018186306A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
rubber latex
cosmetic applicator
cosmetic
foam
Prior art date
Application number
PCT/JP2018/013794
Other languages
French (fr)
Japanese (ja)
Inventor
貞迪 久山
徹 高野
宗十 西村
Original Assignee
株式会社タイキ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社タイキ filed Critical 株式会社タイキ
Publication of WO2018186306A1 publication Critical patent/WO2018186306A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball

Definitions

  • the present invention relates to a flocking type cosmetic applicator for applying a liquid foundation cosmetic (hereinafter referred to as “cosmetic”) to the skin, and a method for producing the cosmetic applicator.
  • cosmetic liquid foundation cosmetic
  • an air cushion (registered trademark) puff 800 (hereinafter referred to as “cushion puff”) 800 as shown in FIG. 15 is commercially available.
  • the cushion puff 800 has a sponge impregnated with cosmetics stored in a container, and is set on the sponge stored in the container.
  • the cushion puff 800 is an open cell type wet polyurethane resin foam 830 with an applied layer, and an adhesive is applied to the foam 830 to form an open cell type dry polyurethane resin foam 820 as a base material layer.
  • an adhesive is applied to the back surface of the laminate, and an open-cell wet polyurethane resin foam 810 is laminated to form a five-layer structure including an adhesive layer.
  • the polyurethane resin foam sheet having the five-layer structure is pressed for several seconds with a metal blade of a frame body whose front end is heated, and heat-welded. Is cut (die cut). If it is not heated and welded for several seconds, the cut side end portion will not be in a sufficiently welded state. For this reason, a convex portion 840 having a height of about 1 mm is formed on the outermost peripheral surface of the molded body side portion at the side end portion cut by thermal welding (see FIG. 15), and the thermal-welded convex portion 840 is formed. Is hard.
  • FIG. 16 is a cross-sectional photograph of the main part of the laminate when the cushioning puff 800 is impregnated with the dropped cosmetic F. In the cushion puff 800, the cosmetic material penetrates into the base material layer from the coating layer surface.
  • NBR acrylonitrile butadiene rubber
  • PU fine polyurethane resin
  • a cosmetic applicator having a three-layer structure composed of a continuous foam (application layer) is known (see Patent Document 1).
  • the adhesive layer is provided as a blocking layer that blocks the passage of the cosmetic oil between the base material layer and the coating layer.
  • a fine foamed sheet is produced by wet coagulation on a carrier such as a nonwoven fabric when producing a polyurethane wet foamed sheet.
  • the nonwoven fabric is forcibly peeled off from the end, and the fine foam layer is divided into two. It is torn and fine fluffed hairs are formed on the tear surface.
  • This NBR base material layer is made of a vulcanized sheet, and a PU coating layer sheet is laminated on the surface of the base material layer sheet via an adhesive layer.
  • a puff-shaped applicator is formed by grinding the upper side surface of the periphery of the molded body formed by cutting the laminated sheet with a metal blade.
  • It consists of a polyurethane hot melt film, an adhesive layer, and a flocked four-layer structure foam on one side of the base material layer made of polyurethane foam.
  • This four-layer structure foam is punched into a puff shape with a metal blade, and the surrounding area.
  • a cosmetic applicator formed by polishing is known (see Patent Document 2).
  • the flocked surface forms a liquid cosmetic application surface
  • the polyurethane hot melt film is a liquid blocking layer
  • the thickness thereof is in the range of 10 to 100 ⁇ m. .
  • the cosmetic permeates into the base material layer from the coated layer surface, and thus the cosmetic is wasted (FIG. 16).
  • the cushion puff 800 is used for several days, the puff is contaminated. Therefore, the cushion puff 800 is generally washed, dried and used again. Therefore, there is a problem that the cosmetics are further consumed wastefully.
  • the cosmetic since the cosmetic penetrates into the base material layer, when the cosmetic is applied to the face, the amount of the cosmetic applied changes depending on the pressure applied to the back surface of the cushion puff 800 with a finger. Therefore, there is a problem that it is difficult to make the face of the face uniform and the skin feel is poor.
  • the hard convex part 840 about 1 mm high is formed in the side edge part of the cushion puff 800, the face makeup cannot be performed using the outer peripheral surface of the side part.
  • die cutting is performed by heat welding, so that there is a problem that it takes time and cost and productivity is poor.
  • the cosmetic applicator disclosed in Patent Document 1 has an adhesive layer as a blocking layer to prevent the liquid cosmetic liquid from penetrating into the base material layer.
  • an adhesive layer as a blocking layer to prevent the liquid cosmetic liquid from penetrating into the base material layer.
  • the entire application layer cannot be used to make up the face, and when the fluffed napping is forcibly separated, the length of the napping There is a problem that uniform makeup is not possible because of non-uniformity.
  • the said cosmetic applicator has a structure which requires the process of grinding the upper side surface of the said peripheral part, when forming in a puff shape, there exists a problem that time and cost increase and productivity is bad.
  • the cosmetic applicator of Patent Document 2 has the above-described polyurethane hot melt film to prevent the liquid cosmetic liquid from penetrating into the base material layer.
  • the thickness is in the range of 10 to 100 ⁇ m, if the thickness of the film can be further reduced, an improvement in touch and coating feel can be expected.
  • the side surface is ground to form the puff shape, so that the cosmetic material is wasted to penetrate into the base material layer from the side surface.
  • the said cosmetics applicator has the problem that the face makeup cannot be performed using the peripheral part.
  • due to the structure of the cosmetic applicator there is a problem in that it takes time and cost to produce it and the productivity is poor.
  • the present invention uses an unvulcanized foamed rubber latex having a small surface irregularity on the outer surface as a material for the base layer, and by applying an adhesive to the outer surface of the base layer, the blocking layer Developed with the knowledge that the side edge of the applicator can be formed into a smooth shape by crimping the peripheral edge using a metal blade at room temperature. It is a thing.
  • the present invention prevents the cosmetic material from penetrating into the coating layer having the same thickness and penetrating into the inside of the base material layer, can form flocks having a uniform length, and the peripheral portion of the applicator is also applied to the cosmetic. It is an object of the present invention to provide a cosmetic applicator having a structure that can be used in the present invention and a structure with good productivity, and a method for producing the cosmetic applicator.
  • the present invention solves the above problems by having the following configuration, and is as follows.
  • a base material layer comprising an open-cell rubber latex foam; A barrier layer made of adhesive; A coating layer in which a plurality of short fibers are planted on the surface of the blocking layer, A cosmetic applicator characterized by comprising a laminated body laminated in this order and having a peripheral edge pressed. 2.
  • the barrier layer and the coating layer are provided on the entire surface of the base material layer, 1. An upper side surface of the peripheral edge portion is formed by the coating layer surface.
  • the open-cell rubber latex foam is NBR rubber latex. Or 2.
  • the barrier layer is made of an acrylic adhesive. To 3. The cosmetic applicator according to any one of the above. 5). 1.
  • the thickness of the barrier layer is 0.05 mm or more and 0.2 mm or less.
  • a foamed rubber latex raw material forming a base layer sheet of an open-cell unvulcanized foam rubber latex, and drying at a temperature at which the unvulcanized foam rubber latex maintains an unvulcanized state; Applying an adhesive to the outer surface of the base material layer sheet, forming a flocked surface on the surface of the adhesive layer to form a three-layer laminate sheet; A die cutting step in which the laminate sheet having the three-layer structure is pressed with a metal blade at room temperature, and the pressing peripheral edge is crimped and cut, Heating the crimped and cut three-layer laminate to vulcanize the unvulcanized foam rubber latex;
  • the manufacturing method of the cosmetic applicator characterized by comprising. 8). 6.
  • the rubber latex raw material is NBR rubber latex.
  • the adhesive is an acrylic adhesive. Or 8.
  • the present invention has a structure in which the cosmetic penetrates into the coating layer having a uniform thickness, the amount of the cosmetic applied is prevented from changing due to the pressure applied to the back surface of the applicator with the finger.
  • the coating material can be applied uniformly.
  • the barrier layer for preventing cosmetic penetration is bonded on the outer surface of the base material layer having small unevenness, the cosmetic material is prevented from penetrating into the base material layer by the barrier layer having a very thin thickness. It is also excellent in skin feel.
  • the present invention also uses the peripheral part to make up the makeup according to the part of the face. Can be convenient.
  • the present invention uses an unvulcanized open-cell rubber latex foam sheet for the base material layer and does not die-cut by heat welding, but die-cuts at room temperature, it is excellent in productivity.
  • FIG. 2 is a cross-sectional view taken along line SS shown in FIG. It is a cross-sectional photograph figure of the peripheral part 141 periphery of the laminated body 140 shown in FIG. It is a cross-sectional photograph figure of the outer surface 112 vicinity of the rubber latex foam 110 shown in FIG. It is a cross-sectional photograph figure of the principal part of the laminated body 140 when the dripping cosmetics F impregnates the short fiber 130.
  • FIG. It is a flowchart which shows the manufacturing method of the cosmetics applicator 100 which concerns on embodiment of this invention.
  • FIG. 8A is a cross-sectional view of the base material layer sheet 108 during the process of S101 of FIG.
  • FIG. 8B is a cross-sectional view of the base material layer sheet 108 and the blocking layer 129 during the process of S102 of FIG.
  • FIG. 8C is a cross-sectional view of the laminate sheet 40 during the process of S102 of FIG. It is sectional drawing which shows the mode just before the die cutting process shown to S103 of FIG. It is sectional drawing which shows a mode when the laminated body sheet
  • FIG. 600 It is a flowchart which shows the manufacturing method of the cosmetic applicator 600 which concerns on the comparative example of the manufacturing method of the cosmetic applicator 100 shown in FIG. It is sectional drawing of the laminated body sheet
  • FIG. 1 is a front view of a schematic diagram of a cosmetic applicator 100 according to an embodiment of the present invention.
  • FIG. 2 is a rear view of the schematic diagram of the cosmetic applicator 100 shown in FIG. 1.
  • 3 is a cross-sectional view taken along line SS shown in FIG. 4 is a cross-sectional photographic view of the periphery of the peripheral portion 141 of the laminate 140 shown in FIG.
  • FIG. 5 is a cross-sectional photograph showing the vicinity of the outer surface 112 of the rubber latex foam 110 shown in FIG.
  • FIG. 4 is a photographic view in which the present inventors photographed the periphery of the peripheral portion 141 of the laminate 140 at a magnification of 20 times using a microscope.
  • FIG. 5 is a photograph of the cross section near the outer surface 112 of the rubber latex foam 110 taken by the present inventor at a magnification of 200 times using a microscope.
  • the cosmetic applicator 100 includes a rubber latex foam 110 as a base material layer, a blocking layer 120 made of an adhesive, and a plurality of short fibers 130 constituting the coating layer.
  • the ribbon 105 is provided as a hand gripping tool on the back side, and this three-layer structure has a puff-like shape.
  • the puff-like shape means a shape of a cosmetic applicator sold on the market as a puff and has an elliptical longitudinal cross-sectional shape.
  • the laminated body 140 having a puff-like three-layer structure is composed of an annular peripheral edge portion 141 that is pressure-bonded and a columnar central portion 142 that is located inside the peripheral edge portion 141.
  • the peripheral portion 141 is formed by pressure cutting with a metal blade 90 (see FIG. 10 described later) at room temperature. Therefore, the side end portion 41 has a smooth shape as shown in FIGS. 3 and 4, unlike the convex portion 840 (see FIG. 15) formed at the peripheral edge portion of the thermal welding cut.
  • the peripheral portion 141 is a portion that is located on the outer peripheral portion of the cosmetic applicator 100 and is thinner than the central portion 142.
  • the rubber latex foam 110 has an open cell structure in which a plurality of holes are continuous.
  • the density of the rubber latex foam 110 is not particularly limited, and is, for example, 0.12 g / cc or more and 0.15 g / cc or less. Since the outer surface 112 of the rubber latex foam 110 is formed by the Dunlop method, which will be described in detail later, the surface has small irregularities derived from bubbles, and the maximum roughness Rz of the outer surface 112 is 50 ⁇ m or less. This maximum roughness Rz is a value measured as a reference length of 2.5 mm from a cross-sectional microscopic image or the like based on JIS B0601-2013.
  • the rubber latex foam 110 includes a first curved surface 115 located at the peripheral edge portion 141 of the surface of the rubber latex foam 110, and a second curved surface 116 located at the peripheral edge portion 141 of the back surface of the rubber latex foam 110.
  • the material of the rubber latex foam 110 is not particularly limited, but NBR (acrylonitrile-butadiene rubber), SBR (styrene-butadiene rubber), IR (isoprene rubber), NR (natural rubber), chloroprene rubber, etc. Can be used. Of these, it is preferable to use NBR which is excellent in swelling resistance, weather resistance, oil resistance, and the like.
  • an uneven pattern is formed on the back surface of the rubber latex foam 110 by embossing.
  • the uneven pattern is, for example, a pattern of woven fabric, knitted fabric, natural leather or the like.
  • the cosmetic applicator 100 has an anti-slip function on the back surface of the rubber latex foam 110. Note that the uneven pattern may not be provided on the back surface.
  • the thickness of the rubber latex foam 110 When the thickness of the rubber latex foam 110 is less than 2 mm, the elastic force against human skin is weak and the cushioning property of the rubber latex foam 110 is low. Moreover, when the thickness of the rubber latex foam 110 exceeds 10 mm, the cosmetic applicator 100 is too thick and difficult to use. Therefore, the thickness of the rubber latex foam 110 is preferably 2 mm or more and 10 mm or less, for example.
  • Both ends of the ribbon 105 are attached to the back surface of the rubber latex foam 110 by sewing.
  • the user can hold the cosmetic applicator 100 by inserting a finger between the back surface of the rubber latex foam 110 and the central portion between both ends of the ribbon 105.
  • the blocking layer 120 is made of an adhesive, is provided on the outer surface 112 of the rubber latex foam 110, and bonds the short fibers 130 on the outer surface 112 of the rubber latex foam 110.
  • the blocking layer 120 is made of, for example, an acrylic adhesive. As described above, since the outer surface 112 of the rubber latex foam 110 has small irregularities, the blocking layer 120 made of an adhesive can cover the outer surface 112 without a gap.
  • the thickness of the blocking layer 120 is preferably 0.05 mm or more and 0.2 mm or less, more preferably 0.06 mm or more and 0.18 mm or less, and 0.08 mm or more and 0.15 mm or less. Is more preferable.
  • the plurality of short fibers 130 are adhered to the surface of the blocking layer 120 in a raised state by an electrostatic flocking method, and a flocked surface is formed on the surface of the blocking layer 120.
  • the coating layer is a layer in which a plurality of short fibers 130 are planted on the surface of the blocking layer 120.
  • the material of the short fiber 130 is not particularly limited, but natural fibers such as cotton, hemp, silk or animal hair, polyamides such as nylon 6, nylon 66, nylon 610, polyethylene terephthalate, polytrimethylene terephthalate, Polyesters such as polybutylene terephthalate, synthetic fibers such as polyacrylonitrile, vinylon, or rayon, or recycled fibers can be used. For these, colored fibers can be used.
  • the short fiber 130 is made of nylon fiber.
  • the length (pile length) and thickness of the short fibers 130 will be described.
  • the length of the short fiber 130 is 0.1 mm or more and 0.6 mm or less.
  • the thickness of the short fiber 130 is usually preferably about 0.5 to 3 dTex.
  • the length of the short fiber 130 is 0.5 mm
  • the thickness of the short fiber 130 is 1.1 dTex.
  • the density of the flocking is not particularly limited, and may be set as appropriate in consideration of the retaining property of the cosmetic and the touch to the skin.
  • FIG. 6 is a cross-sectional photograph of the main part of the laminate 140 when the dropped cosmetic material F is impregnated in the short fibers 130.
  • FIG. 6 is a photograph in which the inventor has photographed a cross section of a main part of the laminate 140 at a magnification of 20 times using a microscope.
  • the user inserts a finger into the ribbon 105, impregnates the short fiber 130 with the cosmetic F, and appropriately presses the surface of the short fiber 130 on the skin while pressing the laminate 140 (the back surface of the rubber latex foam 110) with the finger. By bringing them into contact, the cosmetic F held on the short fibers 130 is applied to the skin. At this time, since the blocking layer 120 is formed on the outer surface 112 of the rubber latex foam 110 with small unevenness, the outer surface 112 is covered without gaps even if the thickness is extremely thin, and the cosmetic F is short. Infiltration from the fiber 130 into the rubber latex foam 110 is prevented (see FIG. 6).
  • the cosmetic applicator 100 has a structure in which the length of the short fibers 130 (thickness of the coating layer) is uniform and the cosmetic F penetrates into the coating layer of uniform thickness, the laminate 140 (rubber latex foam)
  • the application amount of the cosmetic F is prevented from changing due to the pressure applied on the back surface of the body 110 with a finger, and the cosmetic F can be uniformly applied to the face (see FIG. 6).
  • the barrier layer 120 for preventing penetration of the cosmetic material is joined to the small outer surface 112 of the rubber latex foam 110, so that the barrier layer 120 can be made extremely thin. Excellent skin feel.
  • the peripheral portion 141 of the laminate 140 is formed by using an unvulcanized foam rubber latex as a material for the base material layer, and by crimping the peripheral portion 141 using the metal blade 90 at room temperature, The part 41 is formed in a smooth shape.
  • This peripheral portion 141 is pressure-bonded by a manufacturing method of this embodiment in which a laminate sheet 40 shown in FIG. 9 described later is die-cut while the unvulcanized foam rubber latex is maintained in an unvulcanized state. In the peripheral portion 141, the hole is crushed, and the portion surrounding the hole is compressed and bonded. As a result, the short fibers 130 and the barrier layer 120 are provided along the first curved surface 115 of the rubber latex foam 110 that has been pressure-bonded, as shown in FIGS. 3 and 4.
  • the upper side surface 145 of the peripheral portion 141 is formed by a flocked surface (application layer surface). Since the side end portion 41 of the cosmetic applicator 100 has a smooth shape and does not require grinding, the peripheral portion 141 can also be used to make up makeup according to the facial region, which is excellent in convenience.
  • the uneven pattern is provided on the second curved surface 116 of the rubber latex foam 110 that is pressure-bonded. Therefore, the cosmetic applicator 100 can provide the user with a non-slip function even on the second curved surface 116 located at the peripheral edge portion 141.
  • FIG. 7 is a flowchart showing a method of manufacturing the cosmetic applicator 100 according to the embodiment of the present invention.
  • FIG. 8A is a cross-sectional view of the base material layer sheet 108 during the process of S101 of FIG.
  • FIG. 8B is a cross-sectional view of the base material layer sheet 108 and the blocking layer 129 during the process of S102 of FIG.
  • FIG. 8C is a cross-sectional view of the laminate sheet 40 during the process of S102 of FIG.
  • FIG. 9 is a cross-sectional view showing a state immediately before the die cutting process shown in S103 of FIG.
  • FIG. 10 is a cross-sectional view showing a state when the laminate sheet 40 is punched out in the die cutting step shown in S103 of FIG.
  • the manufacturing method of the cosmetic applicator 100 is that the unvulcanized foamed rubber latex is treated at a temperature at which the unvulcanized foamed rubber latex is kept in an unvulcanized state in the steps from S101 to S103, and the unvulcanized foamed rubber latex is vulcanized in the step of S104. And, in the step of S101, a non-vulcanized foamed rubber latex is formed with an outer surface having small irregularities, and in the step of S102, an adhesive is applied to the outer surface.
  • an open-cell unvulcanized foam rubber latex base material layer sheet 108 is formed using a foamed rubber latex raw material, and the unvulcanized foam rubber latex is unvulcanized. Drying is performed at a temperature that maintains the state (S101).
  • S101 the unvulcanized base material layer sheet 108 is formed by the Dunlop method.
  • the Dunlop method is a method in which air is injected into a rubber latex raw material while stirring, a fine powder of sodium silicofluoride is added, and microwave irradiation is performed for a predetermined time (for example, 15 seconds).
  • the rubber latex raw material is solidified by rapidly increasing the temperature and rapidly decreasing the pH by microwave irradiation to form the base material layer sheet 108. At this time, the upper and lower interfaces of the base material layer sheet 108 become the outer surface 112 with small irregularities because the amount of bubbles is small compared to the inside.
  • the raw material for rubber latex contains rubber latex and additives.
  • the rubber component of the rubber latex for example, NBR (acrylonitrile-butadiene rubber), SBR (styrene-butadiene rubber), IR (isoprene rubber), NR (natural rubber), chloroprene rubber and the like can be used. Of these, it is preferable to use NBR which is excellent in swelling resistance, weather resistance, oil resistance, and the like.
  • the rubber latex may contain additives such as a vulcanizing agent, a vulcanization accelerator, an anti-aging agent, a foam stabilizer, a vulcanization activator, and an antibacterial agent as long as they do not impair the purpose of the present invention. It may be added. These additives may be used alone or in combination of two or more.
  • the vulcanizing agent for example, sulfur or a sulfur-containing compound can be used.
  • the blending amount of the vulcanizing agent is preferably 1 part by weight or less with respect to 100 parts by weight of the rubber component of the rubber latex.
  • vulcanization accelerator examples include mercaptobenzothiazole sodium salt, mercaptobenzothiazole zinc salt, zinc N-ethyl-N-phenyldithiocarbamate, zinc dimethyldithiocarbamate, zinc diethyldithiocarbamate, zinc dibutyldithiocarbamate, tetramethyl Thiuram disulfide and the like can be used.
  • a mercaptobenzothiazole-based vulcanization accelerator having the slowest decomposition rate is preferable among the vulcanization accelerators so that vulcanization does not proceed in steps S101 to S103.
  • the mercaptobenzothiazole vulcanization accelerator is, for example, mercaptobenzothiazole sodium salt or mercaptobenzothiazole zinc salt.
  • the blending amount of the mercaptobenzothiazole vulcanization accelerator is preferably 1.5 parts by weight or less with respect to 100 parts by weight of the rubber component of the rubber latex.
  • the vulcanization accelerator added to the rubber latex in the method of manufacturing the cosmetic applicator 100 is only one type of mercaptobenzothiazole vulcanization accelerator of 1 part by weight or less. Accordingly, the mercaptobenzothiazole-based vulcanization accelerator can greatly extend the time during which the base material layer sheet 108 formed in the step S101 can maintain the unvulcanized state. If the decomposition temperature of the vulcanization accelerator is exceeded, the vulcanization accelerator is decomposed and vulcanization proceeds. Therefore, the steps from S101 to S103 are performed at a temperature not exceeding the decomposition temperature.
  • the bubble stabilizer for example, trimene base can be used.
  • the vulcanization activator for example, zinc white (zinc oxide) can be used.
  • the blending amount of the vulcanization activator is preferably 1.5 parts by weight or less with respect to 100 parts by weight of the rubber component of the rubber latex.
  • ZPT zinc pyrithione
  • an adhesive is applied to the outer surface 112 of the base material layer sheet 108 as shown in FIG. 8B, and a flocked surface (surface consisting of a plurality of short fibers 130) is formed on the surface of the blocking layer 120 as shown in FIG. 8C.
  • a laminate sheet 40 having a three-layer structure is formed by electrostatic flocking (S102).
  • S102 electrostatic flocking
  • FIG. 112 is a surface having a maximum Rz of 50 ⁇ m or less. This maximum roughness Rz is a value measured as a reference length of 2.5 mm from a cross-sectional microscopic image or the like based on JIS B0601-2013.
  • the die-cut molding machine 9 includes a metal flat plate 190 on which the laminate sheet 40 is placed, and a metal blade 90 that is a frame body that punches out the laminate sheet 40 placed on the metal plate 190.
  • the metal blade 90 has a tip surface and a slope, for example, is a tapered surface inclined at an angle of about 120 degrees, and the tip surface is a thin flat surface with a width of about several millimeters.
  • the hardness of the metal blade 90 is lower than that of the metal flat plate 190, and the metal flat plate 190 is not damaged.
  • the laminate sheet 40 having the three-layer structure is pressed with a metal blade 90 at room temperature, and the pressing peripheral edge is crimped and cut (S103).
  • a laminate 149 having a three-layer structure cut by crimping is formed.
  • the laminated body 149 has a puff-like three-layer structure of a plurality of short fibers 130 constituting the coating layer, the blocking layer 120, and an unvulcanized rubber latex 109 serving as a base material layer.
  • the unvulcanized rubber latex 109 has a high adhesive force and an elastic force that is extremely lower than the elastic force of the rubber latex foam 110 in a vulcanized state.
  • the peripheral edge portion 141 cut and crimped is cut in a state in which the short fibers 130 and the blocking layer 120 are pressure-bonded to the unvulcanized rubber latex 109 having a high adhesive force.
  • the thickness of the unvulcanized rubber latex 109 before die-cutting is 5 times or more that of the other two layers, but the elastic force is extremely low, so that the pressure-bonded state is maintained.
  • the laminate 149 having a three-layer structure that has been crimped and cut is heated to vulcanize the unvulcanized rubber latex 109 (S104).
  • the vulcanization temperature is, for example, 100 ° C. or more, and the vulcanization time is, for example, about 1.5 hours.
  • the unvulcanized rubber latex 109 which is a plastic body, is vulcanized into the rubber latex 110 (see FIG. 3), which is an elastic body, with the peripheral portion 141 being pressed in the step S104.
  • the side edge part 41 becomes a smooth shape as shown in FIG. 4 instead of the convex part 840 (refer FIG. 15) formed in the peripheral part cut
  • the elastic force is very low. Therefore, when the unvulcanized rubber latex 109 is vulcanized in the step of S104, the elastic force continues to increase while the adhesive force is lost, and the rubber latex foam 110 is maintained. Is formed.
  • the rubber latex foam 110 to which elastic force is applied by vulcanization swells to the outer peripheral side, whereas the short fibers 130 and the barrier layer 120 do not change. From this, it is shown that it is formed in a smooth shape. Therefore, FIG. 4 clearly shows that the upper side surface of the puff-like three-layer structure is formed by the coating layer surface.
  • the cosmetic applicator 100 of this embodiment shown in FIGS. 1 to 3 is obtained by performing oxidation cleaning and hot water washing for deodorization treatment, drying, and attaching the ribbon 105.
  • the manufacturing method of the present embodiment uses the base layer sheet 108 of open-cell unvulcanized rubber latex as the base layer, and does not die-cut by heat welding, but die-cuts at room temperature, so productivity Is excellent.
  • NBR rubber latex manufactured by Nippon Zeon Co., Ltd., trade name: Nipol 531B
  • sulfur powder 1.5 parts by weight
  • vulcanization accelerator trade name: Noxeller MZ made by Ouchi Shinsei Co., Ltd.
  • Anti-aging agent Cisco Chemical Co., Ltd., trade name: BHT
  • bubble stabilizer Guardangei Chemical Co., Ltd., trade name: Trimen Base
  • ZPT antibacterial agent Sanisol 100
  • the rubber latex raw material was stirred using an Oaks mixer and coated with a thickness of 8 mm while adding 75 g of a fine powder dispersion (25% liquid) of sodium fluorosilicate crushed by a ball mill. .
  • the foamed rubber latex sheet (8 mmt) was irradiated with 5 KW microwave for about 20 seconds to form a base layer sheet (coagulated sheet) of open-cell unvulcanized foamed NBR rubber latex. And this base material layer sheet was dried at the temperature (60 degreeC) by which this unvulcanized foaming NBR rubber latex maintains an unvulcanized state, and the base material layer sheet with the small unevenness
  • an acrylic ester emulsion-based adhesive was applied to the outer surface of the base layer sheet (coating amount 100 g / m 2 ), and passed through an electrostatic flocking machine, a nylon 66 pile (fineness 1.1 Dtex) manufactured by Chubu Pile Co., Ltd. , Pile length 0.5 mm) was planted to obtain a laminate sheet having a three-layer structure. Then, the laminate sheet having a three-layer structure was pressed with a metal blade at room temperature, and the pressing peripheral edge was crimped and cut into a circular shape having a diameter of 52 mm. And the laminated body of the three-layer structure cut by pressure cutting was heated at 110 ° C. for 60 minutes to vulcanize the unvulcanized foamed NBR rubber latex.
  • a cosmetic applicator was obtained by performing oxidation cleaning and dewatering treatment for deodorizing treatment, drying, and attaching a ribbon.
  • the obtained cosmetic applicator was able to prevent the low-viscosity liquid foundation cosmetic of about 5000 cps from penetrating from the short fibers into the NBR rubber latex foam (see FIG. 6).
  • the obtained cosmetic applicator has a structure in which the cosmetic penetrates into the coating layer of an equal thickness, the amount of cosmetic applied varies depending on the pressure applied to the back of the NBR rubber latex foam with a finger. It was possible to apply cosmetics evenly on the face.
  • the barrier layer for preventing penetration of the cosmetic material is bonded onto the small outer surface of the NBR rubber latex foam, so that the barrier layer can be made extremely thin, It was excellent in touch.
  • the obtained cosmetic applicator can make up according to the facial part using the peripheral part and is excellent in convenience. It was.
  • FIG. 11 is a flowchart showing a method for manufacturing cosmetic applicator 600 according to a comparative example of the method for manufacturing cosmetic applicator 100 shown in FIG.
  • FIG. 12 is a cross-sectional view of the laminate sheet 604 in S104 of FIG.
  • FIG. 13 is a cross-sectional view showing a state when the laminate sheet 604 is punched out in the die cutting step shown in S103 of FIG.
  • FIG. 14 is a cross-sectional view of a cosmetic applicator 600 manufactured by the manufacturing method shown in FIG.
  • the laminate sheet 40 shown in FIG. 8C is heated to vulcanize the base layer sheet 108 of the unvulcanized rubber latex (S104).
  • S104 unvulcanized rubber latex
  • the laminate sheet 604 having the three-layer structure is pressed with a metal blade 90 at room temperature, and the pressing peripheral edge is crimped and cut (S103).
  • a laminate 640 having a three-layer structure of a plurality of short fibers 130 constituting the coating layer, the blocking layer 120, and a vulcanized rubber latex foam 610 as a base material layer is formed. Is done.
  • the elastic force of the rubber latex foam 610 in the vulcanized state is extremely larger than the elastic force of the rubber latex foam in the unvulcanized state. Therefore, in the rubber latex foam 610 in a vulcanized state, the peripheral edge portion 641 compressed and cut by the metal blade 90 in the die cutting process is restored to the original state before being compressed by the elastic force of the vulcanized rubber latex foam 610. Restore shape. Therefore, a rectangular parallelepiped laminated body 640 having a peripheral edge portion 641 that is not bonded by pressure bonding is formed. Therefore, in order to form a puff shape, it is necessary to grind the side surface. Therefore, it takes time and cost and productivity is poor.
  • the cosmetic F easily penetrates into the base material layer of the rubber latex foam 610 from the side surface of the laminated body 640, consumes the cosmetic F wastefully, and cannot use the side surface.
  • the unvulcanized foam rubber latex is treated at a temperature at which the unvulcanized foam rubber latex is kept in the unvulcanized state in the steps from S101 to S103, and the unvulcanized foam rubber latex is treated in the step of S104. It is characterized in that it is vulcanized, and an unvulcanized foamed rubber latex with small irregularities on the outer surface is formed in step S101, and an adhesive is applied to the outer surface in step S102.
  • the barrier layer 120 made of an extremely thin adhesive, and the base material layer is continuously unvulcanized. Since the base layer sheet 108 of the foamed rubber latex foam is used, die cutting is performed at room temperature instead of die cutting by heat welding, so that productivity is excellent.

Abstract

Provided is a cosmetic applicator provided with a structure with which: a cosmetic permeates into an application layer having a uniform thickness; permeation into a base material layer is inhibited; bristles having a uniform length can be formed; even a peripheral edge portion of the applicator can be used when applying the cosmetic; and excellent productivity is achieved. Also provided is a production method for the cosmetic applicator. The cosmetic applicator 100 is formed from a puff-like layered body 140 having a three-layer structure comprising: a rubber latex foam body 110 which serves as a base material layer; an adhesive layer 120; and a plurality of short fibres 130 which form an application layer. A surface of the rubber latex foam body 110 is covered with an outer surface 112 provided with small recesses and protrusions. A barrier layer 120 is provided on the outer surface 112, and bonds the rubber latex foam body 110 and the short fibres 130 together. The puff-like layered body 140 having the three-layer structure is formed from: a crimped peripheral edge portion 141; and a central portion 142 positioned further inside than the peripheral edge portion 141. The peripheral edge portion 141 is formed by being crimped and cut by a metal blade at normal temperature.

Description

液状ファンデーション化粧料塗布具、及びその化粧料塗布具の製造方法Liquid foundation cosmetic applicator and method for producing the cosmetic applicator
　本発明は、液状ファンデーション化粧料（以下、「化粧料」という）を肌に塗布する植毛タイプの化粧料塗布具、及びその化粧料塗布具の製造方法に関する。 The present invention relates to a flocking type cosmetic applicator for applying a liquid foundation cosmetic (hereinafter referred to as “cosmetic”) to the skin, and a method for producing the cosmetic applicator.
　化粧料塗布具として、図１５に示すようなエアクッション（登録商標）のパフ（以下、「クッションパフ」という）８００が市販されている。このクッションパフ８００は、化粧料が含浸されたスポンジが容器に収納されており、その容器に収納されたスポンジ上にセットされている。そして、このクッションパフ８００は、塗布層が連続気泡型の湿式ポリウレタン樹脂発泡体８３０であり、その発泡体８３０に接着剤を塗布して基材層として連続気泡型の乾式ポリウレタン樹脂発泡体８２０を貼り合わせ、更にその裏面には接着剤を塗布して連続気泡型の湿式ポリウレタン樹脂発泡体８１０が貼り合わされた、接着剤層を含んだ五層構造となっている。 As a cosmetic applicator, an air cushion (registered trademark) puff 800 (hereinafter referred to as “cushion puff”) 800 as shown in FIG. 15 is commercially available. The cushion puff 800 has a sponge impregnated with cosmetics stored in a container, and is set on the sponge stored in the container. The cushion puff 800 is an open cell type wet polyurethane resin foam 830 with an applied layer, and an adhesive is applied to the foam 830 to form an open cell type dry polyurethane resin foam 820 as a base material layer. In addition, an adhesive is applied to the back surface of the laminate, and an open-cell wet polyurethane resin foam 810 is laminated to form a five-layer structure including an adhesive layer.
　上記構造のクッションパフ８００を製造する際に、パフ形状に形成するには、先端側が加熱された枠体の金属刃体で上記五層構造のポリウレタン樹脂発泡体シートを数秒間加圧し、熱溶着により切断（ダイカット）している。数秒間加圧して熱溶着しないとカットされた側端部が十分な溶着状態とはならない。そのため、熱溶着で切断された側端部は、上記成形体側部の最外周面に高さ１ｍｍ程度の凸状部８４０が形成（図１５を参照）され、その熱溶着された凸状部８４０は固いものである。そして、上記塗布層の湿式ポリウレタン樹脂発泡体の面および基材層の乾式ポリウレタン樹脂発泡体の面は、連続気泡型の発泡体でセル面となっているので、両者を貼り合わせるために塗布した接着剤は、その連続気泡中に浸透した状態で両者が接合されていて化粧料の浸透を遮断する構造とはなっていない。図１６は、滴下した化粧料Ｆがこのクッションパフ８００に含浸した時の積層体の要部の断面写真図である。クッションパフ８００は、化粧料が塗布層面から基材層内部に浸透している。 When the cushion puff 800 having the above structure is manufactured, in order to form a puff shape, the polyurethane resin foam sheet having the five-layer structure is pressed for several seconds with a metal blade of a frame body whose front end is heated, and heat-welded. Is cut (die cut). If it is not heated and welded for several seconds, the cut side end portion will not be in a sufficiently welded state. For this reason, a convex portion 840 having a height of about 1 mm is formed on the outermost peripheral surface of the molded body side portion at the side end portion cut by thermal welding (see FIG. 15), and the thermal-welded convex portion 840 is formed. Is hard. And since the surface of the wet polyurethane resin foam of the coating layer and the surface of the dry polyurethane resin foam of the base material layer are open-celled foams and are cell surfaces, they were coated to bond them together The adhesive does not have a structure that blocks the penetration of the cosmetic material because both are joined in the state of permeation into the open cell. FIG. 16 is a cross-sectional photograph of the main part of the laminate when the cushioning puff 800 is impregnated with the dropped cosmetic F. In the cushion puff 800, the cosmetic material penetrates into the base material layer from the coating layer surface.
　アクリルニトリルブタジエンラバー（以下、「ＮＢＲ」という)の柔軟な連続発泡体からなる本体（基材層）と、接着剤層を介して積層されたポリウレタン樹脂（以下、「ＰＵ」という）の微細な連続発泡体（塗布層）とからなる、三層構造の化粧料塗布具が知られている（特許文献１参照）。接着剤層は、上記基材層と塗布層との間に化粧用油剤の通過を遮断する遮断層として設けられている。また、上記塗布層の外表面に毛羽状起毛を設けるには、ポリウレタンの湿式発泡シートの作成に際して、不織布等の担体の上に湿式凝固法により微細発泡シートを生成させる。次いで不織布面を下にして微細発泡シートの上にＮＢＲラテックス発泡体を流延して所望の厚さで加硫成形した後に不織布を端部より強制的に剥離すると、微細発泡層は二つに引き裂かれて、引き裂き面に微細な毛羽状起毛が形成される。 A main body (base material layer) made of a flexible continuous foam of acrylonitrile butadiene rubber (hereinafter referred to as “NBR”) and a fine polyurethane resin (hereinafter referred to as “PU”) laminated via an adhesive layer. A cosmetic applicator having a three-layer structure composed of a continuous foam (application layer) is known (see Patent Document 1). The adhesive layer is provided as a blocking layer that blocks the passage of the cosmetic oil between the base material layer and the coating layer. In addition, in order to provide fluff-like raising on the outer surface of the coating layer, a fine foamed sheet is produced by wet coagulation on a carrier such as a nonwoven fabric when producing a polyurethane wet foamed sheet. Next, when the NBR latex foam is cast on the fine foam sheet with the nonwoven fabric side down and vulcanized and molded to the desired thickness, the nonwoven fabric is forcibly peeled off from the end, and the fine foam layer is divided into two. It is torn and fine fluffed hairs are formed on the tear surface.
　このＮＢＲ基材層は加硫化されたシートからなり、その基材層シートの面上に接着剤層を介してＰＵ塗布層シートを積層している。その積層シートを金属刃体で切断して形成された成形体の周縁部の上部側面を研削することにより、パフ形状の塗布具が形成される。なお、加硫化されたＮＢＲ基材層シートに接着剤層を介して積層されたＰＵ塗布層シートを、熱溶着によりダイカットして切断しても、その切断端部は熱溶着されない。 This NBR base material layer is made of a vulcanized sheet, and a PU coating layer sheet is laminated on the surface of the base material layer sheet via an adhesive layer. A puff-shaped applicator is formed by grinding the upper side surface of the periphery of the molded body formed by cutting the laminated sheet with a metal blade. In addition, even if the PU coating layer sheet laminated on the vulcanized NBR base material layer sheet through the adhesive layer is die-cut by thermal welding and cut, the cut end portion is not thermally welded.
　ポリウレタン発泡体からなる基材層の一面側に、ポリウレタンホットメルトフィルム、接着剤層及び植毛面の四層構造発泡体からなり、この四層構造発泡体を金属刃体によってパフ形状に打ち抜き、周囲を研磨加工により形成された化粧料塗布具が知られている（特許文献２参照）。そして、上記化粧料塗布具は、その植毛面が液体化粧料の塗布面を形成しており、上記ポリウレタンホットメルトフィルムが液体遮断層であり、その厚みが１０～１００μｍの範囲にあるものである。 It consists of a polyurethane hot melt film, an adhesive layer, and a flocked four-layer structure foam on one side of the base material layer made of polyurethane foam. This four-layer structure foam is punched into a puff shape with a metal blade, and the surrounding area. A cosmetic applicator formed by polishing is known (see Patent Document 2). In the cosmetic applicator, the flocked surface forms a liquid cosmetic application surface, the polyurethane hot melt film is a liquid blocking layer, and the thickness thereof is in the range of 10 to 100 μm. .
特開平８－１６４０１９号公報Japanese Patent Laid-Open No. 8-164019 特許第４７４８６３８号公報Japanese Patent No. 4748638
　上記クッションパフ８００は、化粧料が塗布層面から基材層内部に浸透するので、化粧料を無駄に消費している（図１６）。そして、上記クッションパフ８００を数日間使用した頃には、パフが汚染されるために、洗濯し乾燥して再度使用するのが一般的である。そのために、更にいっそう化粧料を無駄に消費するという問題がある。また、化粧料が基材層内部にまで浸透しているので、化粧料を顔に塗布する際には、クッションパフ８００の裏面を指で押圧する圧力の加減で化粧料の塗布量が変化するため、顔の化粧面を均一にすることが困難であり、肌感触が悪いという問題がある。 In the cushion puff 800, the cosmetic permeates into the base material layer from the coated layer surface, and thus the cosmetic is wasted (FIG. 16). When the cushion puff 800 is used for several days, the puff is contaminated. Therefore, the cushion puff 800 is generally washed, dried and used again. Therefore, there is a problem that the cosmetics are further consumed wastefully. Further, since the cosmetic penetrates into the base material layer, when the cosmetic is applied to the face, the amount of the cosmetic applied changes depending on the pressure applied to the back surface of the cushion puff 800 with a finger. Therefore, there is a problem that it is difficult to make the face of the face uniform and the skin feel is poor.
　そして、クッションパフ８００の側端部に高さ１ｍｍ程度の固い凸状部８４０が形成されているため、その側部外周面を用いて顔の化粧ができない。また、上記５層構造のシートをカットしてパフ形状の成形体を形成するのに、熱溶着によりダイカットするため、時間とコストがかかり生産性が悪いという問題がある。 And since the hard convex part 840 about 1 mm high is formed in the side edge part of the cushion puff 800, the face makeup cannot be performed using the outer peripheral surface of the side part. In addition, since the sheet having the five-layer structure is cut to form a puff-shaped molded body, die cutting is performed by heat welding, so that there is a problem that it takes time and cost and productivity is poor.
　特許文献１の化粧料塗布具は、遮断層として接着剤層を有することで液状化粧液が基材層内部に浸透するのを防いでいる。しかし、上記化粧料塗布具の周縁部の上部側面を研削した場合、塗布層全体を用いて顔の化粧ができない、そして、毛羽状起毛が強制的に剥離して形成した場合、起毛の長さが不均一なため、均一な化粧ができない、という問題がある。また、上記化粧料塗布具は、パフ形状に形成する場合上記周縁部の上部側面を研削する工程が必要な構造となっているため、時間とコストがかかり生産性が悪いという問題がある。 The cosmetic applicator disclosed in Patent Document 1 has an adhesive layer as a blocking layer to prevent the liquid cosmetic liquid from penetrating into the base material layer. However, when the upper side surface of the peripheral part of the cosmetic applicator is ground, the entire application layer cannot be used to make up the face, and when the fluffed napping is forcibly separated, the length of the napping There is a problem that uniform makeup is not possible because of non-uniformity. Moreover, since the said cosmetic applicator has a structure which requires the process of grinding the upper side surface of the said peripheral part, when forming in a puff shape, there exists a problem that time and cost increase and productivity is bad.
　特許文献２の化粧料塗布具は、上記ポリウレタンホットメルトフィルムを有することで液状化粧液が基材層内部に浸透するのを防いでいる。しかし、その厚さが１０～１００μｍの範囲にあるので、上記フィルムの厚さをさらに薄くできれば触感と塗布感の向上が期待できる。 The cosmetic applicator of Patent Document 2 has the above-described polyurethane hot melt film to prevent the liquid cosmetic liquid from penetrating into the base material layer. However, since the thickness is in the range of 10 to 100 μm, if the thickness of the film can be further reduced, an improvement in touch and coating feel can be expected.
　また、上記四層構造発泡体をパフ形状に形成するには、その側面を研削することによってパフ形状を形成しているので、その側面から基材層内部に浸透するために、化粧料を無駄に消費するという問題がある。また、上記化粧料塗布具は、その周縁部を用いて顔の化粧ができないという問題がある。更に、化粧料塗布具の構造のために、それを製造するのに時間とコストがかかり生産性が悪いという問題がある。 Further, in order to form the above four-layer structure foam into a puff shape, the side surface is ground to form the puff shape, so that the cosmetic material is wasted to penetrate into the base material layer from the side surface. There is a problem of consumption. Moreover, the said cosmetics applicator has the problem that the face makeup cannot be performed using the peripheral part. Furthermore, due to the structure of the cosmetic applicator, there is a problem in that it takes time and cost to produce it and the productivity is poor.
　上記した問題に対して、本発明は、基材層の素材として外面の表面凹凸が小さい未加硫発泡ゴムラテックスを用いることで、その基材層の外面に接着剤を塗布することで遮断層を形成し化粧料の浸透が防止でき、また、常温下で金属刃体を用いて周縁部を圧着させることで、塗布具の側端部が滑らかな形状に形成できる知見を得て、開発されたものである。 In response to the above problems, the present invention uses an unvulcanized foamed rubber latex having a small surface irregularity on the outer surface as a material for the base layer, and by applying an adhesive to the outer surface of the base layer, the blocking layer Developed with the knowledge that the side edge of the applicator can be formed into a smooth shape by crimping the peripheral edge using a metal blade at room temperature. It is a thing.
　従って、本発明は、化粧料が均等の厚さの塗布層に浸透し、基材層内部に浸透することを防止し、長さの均等な植毛が形成できると共に、塗布具の周縁部も化粧に使用できる構造、そして生産性が良好な構造を備える化粧料塗布具、及びその化粧料塗布具の製造方法を提供することを目的とする。 Therefore, the present invention prevents the cosmetic material from penetrating into the coating layer having the same thickness and penetrating into the inside of the base material layer, can form flocks having a uniform length, and the peripheral portion of the applicator is also applied to the cosmetic. It is an object of the present invention to provide a cosmetic applicator having a structure that can be used in the present invention and a structure with good productivity, and a method for producing the cosmetic applicator.
　本発明は、以下の構成を有することで上記課題を解決したものであり、以下の通りのものである。 The present invention solves the above problems by having the following configuration, and is as follows.
１．連続気泡型ゴムラテックス発泡体からなる基材層と、
　接着剤からなる遮断層と、
　前記遮断層の表面に複数の短繊維が植毛されてなる塗布層が、
　この順に積層され、周縁部が圧着されてなる積層体からなることを特徴とする化粧料塗布具。
２．前記基材層の表面の全面に前記遮断層及び前記塗布層が設けられ、
　前記周縁部の上部側面が前記塗布層面で形成されていることを特徴とする１．に記載の化粧料塗布具。
３．前記連続気泡型ゴムラテックス発泡体がＮＢＲゴムラテックスであることを特徴とする１．又は２．に記載の化粧料塗布具。
４．前記遮断層がアクリル系接着剤で構成されていることを特徴とする１．乃至３．のいずれか１項に記載の化粧料塗布具。
５．前記遮断層の厚みが０．０５ｍｍ以上０．２ｍｍ以下であることを特徴とする１．乃至４．のいずれか１項に記載の化粧料塗布具。
６．連続気泡型ゴムラテックス発泡体の基材層と、
　上記基材層と塗布層を接着する遮断層と、
　該遮断層の表面に複数の短繊維が植毛されてなる塗布層と、からなるパフ状三層構造の積層体からなり、
　上記積層体の周縁部が常温の金属刃体で圧着切断して形成されていることを特徴とする化粧料塗布具。
７．発泡されたゴムラテックス原料を用いて、連続気泡型の未加硫発泡ゴムラテックスの基材層シートを形成し、該未加硫発泡ゴムラテックスが未加硫状態を保つ温度で乾燥させる工程と、
　上記基材層シートの外面に接着剤を塗布して、その接着剤層の表面に植毛面を形成して三層構造の積層体シートを形成する工程と、
　上記三層構造の積層体シートを常温の金属刃体で押圧し、その押圧周縁部を圧着して切断するダイカット工程と、
　上記圧着切断された三層構造の積層体を加熱して、上記未加硫発泡ゴムラテックスを加硫する工程と、
　からなることを特徴とする化粧料塗布具の製造方法。
８．前記ゴムラテックス原料がＮＢＲゴムラテックスであることを特徴とする７．に記載の化粧料塗布具の製造方法。
９．前記接着剤がアクリル系接着剤であることを特徴とする７．又は８．に記載の化粧料塗布具の製造方法。 1. A base material layer comprising an open-cell rubber latex foam;
A barrier layer made of adhesive;
A coating layer in which a plurality of short fibers are planted on the surface of the blocking layer,
A cosmetic applicator characterized by comprising a laminated body laminated in this order and having a peripheral edge pressed.
2. The barrier layer and the coating layer are provided on the entire surface of the base material layer,
1. An upper side surface of the peripheral edge portion is formed by the coating layer surface. Cosmetic applicator described in 1.
3. The open-cell rubber latex foam is NBR rubber latex. Or 2. Cosmetic applicator described in 1.
4). The barrier layer is made of an acrylic adhesive. To 3. The cosmetic applicator according to any one of the above.
5). 1. The thickness of the barrier layer is 0.05 mm or more and 0.2 mm or less. To 4. The cosmetic applicator according to any one of the above.
6). A base layer of open-cell rubber latex foam,
A blocking layer for bonding the base material layer and the coating layer;
A coating layer in which a plurality of short fibers are planted on the surface of the blocking layer, and a puff-like three-layer laminate,
A cosmetic applicator characterized in that a peripheral edge of the laminate is formed by crimping and cutting with a metal blade at room temperature.
7). Using a foamed rubber latex raw material, forming a base layer sheet of an open-cell unvulcanized foam rubber latex, and drying at a temperature at which the unvulcanized foam rubber latex maintains an unvulcanized state;
Applying an adhesive to the outer surface of the base material layer sheet, forming a flocked surface on the surface of the adhesive layer to form a three-layer laminate sheet;
A die cutting step in which the laminate sheet having the three-layer structure is pressed with a metal blade at room temperature, and the pressing peripheral edge is crimped and cut,
Heating the crimped and cut three-layer laminate to vulcanize the unvulcanized foam rubber latex;
The manufacturing method of the cosmetic applicator characterized by comprising.
8). 6. The rubber latex raw material is NBR rubber latex. The manufacturing method of the cosmetic applicator as described in any one of.
9. 6. The adhesive is an acrylic adhesive. Or 8. The manufacturing method of the cosmetic applicator as described in any one of.
　本発明は、化粧料が均等の厚さの塗布層に浸透する構造なので、塗布具の裏面を指で押圧する圧力の加減で化粧料の塗布量が変化することを防いでおり、顔に化粧料を均一に塗布することができる。 Since the present invention has a structure in which the cosmetic penetrates into the coating layer having a uniform thickness, the amount of the cosmetic applied is prevented from changing due to the pressure applied to the back surface of the applicator with the finger. The coating material can be applied uniformly.
　そして、本発明は、化粧料浸透防止の遮断層が凹凸が小さい基材層外面上に接合されているので、厚さが極めて薄い遮断層で化粧料が基材層内部に浸透することが防止でき、また、肌感触に優れている。 In the present invention, since the barrier layer for preventing cosmetic penetration is bonded on the outer surface of the base material layer having small unevenness, the cosmetic material is prevented from penetrating into the base material layer by the barrier layer having a very thin thickness. It is also excellent in skin feel.
　また、本発明は、塗布具周縁部の上部側面が植毛面（塗布層面）で形成され、かつ、側端部が滑らかな形状であるので、周縁部も使用して顔の部位に応じた化粧ができ利便性に優れている。 Moreover, since the upper side surface of the peripheral part of the applicator is formed by a flocked surface (applied layer surface) and the side end part has a smooth shape, the present invention also uses the peripheral part to make up the makeup according to the part of the face. Can be convenient.
　更に、本発明は、基材層に未加硫の連続気泡型ゴムラテックス発泡体シートを用いて、熱溶着によりダイカットするのではなく、常温でダイカットするので、生産性に優れている。 Furthermore, since the present invention uses an unvulcanized open-cell rubber latex foam sheet for the base material layer and does not die-cut by heat welding, but die-cuts at room temperature, it is excellent in productivity.
本発明の実施形態に係る化粧料塗布具１００の模式図の正面図である。It is a front view of the schematic diagram of cosmetics applicator 100 concerning the embodiment of the present invention. 図１に示す化粧料塗布具１００の模式図の裏面図である。It is a reverse view of the schematic diagram of the cosmetic applicator 100 shown in FIG. 図１に示すＳ－Ｓ線の断面図である。FIG. 2 is a cross-sectional view taken along line SS shown in FIG. 図３に示す積層体１４０の周縁部１４１周辺の断面写真図である。It is a cross-sectional photograph figure of the peripheral part 141 periphery of the laminated body 140 shown in FIG. 図３に示すゴムラテックス発泡体１１０の外面１１２近傍の断面写真図である。It is a cross-sectional photograph figure of the outer surface 112 vicinity of the rubber latex foam 110 shown in FIG. 滴下した化粧料Ｆが短繊維１３０に含浸した時の積層体１４０の要部の断面写真図である。It is a cross-sectional photograph figure of the principal part of the laminated body 140 when the dripping cosmetics F impregnates the short fiber 130. FIG. 本発明の実施形態に係る化粧料塗布具１００の製造方法を示すフローチャートである。It is a flowchart which shows the manufacturing method of the cosmetics applicator 100 which concerns on embodiment of this invention. 図８Ａは、図７のＳ１０１の工程中の基材層シート１０８の断面図である。図８Ｂは、図７のＳ１０２の工程中の基材層シート１０８及び遮断層１２９の断面図である。図８Ｃは、図７のＳ１０２の工程中の積層体シート４０の断面図である。FIG. 8A is a cross-sectional view of the base material layer sheet 108 during the process of S101 of FIG. FIG. 8B is a cross-sectional view of the base material layer sheet 108 and the blocking layer 129 during the process of S102 of FIG. FIG. 8C is a cross-sectional view of the laminate sheet 40 during the process of S102 of FIG. 図７のＳ１０３に示すダイカット工程の直前の様子を示す断面図である。It is sectional drawing which shows the mode just before the die cutting process shown to S103 of FIG. 図７のＳ１０３に示すダイカット工程で積層体シート４０を打ち抜いた時の様子を示す断面図である。It is sectional drawing which shows a mode when the laminated body sheet | seat 40 is pierce | punched by the die-cutting process shown to S103 of FIG. 図７に示す化粧料塗布具１００の製造方法の比較例に係る化粧料塗布具６００の製造方法を示すフローチャートである。It is a flowchart which shows the manufacturing method of the cosmetic applicator 600 which concerns on the comparative example of the manufacturing method of the cosmetic applicator 100 shown in FIG. 図１１のＳ１０４中の積層体シート６０４の断面図である。It is sectional drawing of the laminated body sheet | seat 604 in S104 of FIG. 図１１のＳ１０３に示すダイカット工程で積層体シート６０４を打ち抜いた時の様子を示す断面図である。It is sectional drawing which shows a mode when the laminated body sheet | seat 604 is pierce | punched by the die-cutting process shown to S103 of FIG. 図１１に示す製造方法で製造される化粧料塗布具６００の断面図である。It is sectional drawing of the cosmetics applicator 600 manufactured with the manufacturing method shown in FIG. 市販されているクッションパフの縦断面図である。It is a longitudinal cross-sectional view of the commercially available cushion puff. 滴下した化粧料Ｆが市販されているクッションパフに含浸した時の積層体の要部の断面写真図であるIt is a cross-sectional photograph figure of the principal part of a laminated body when the dripped cosmetics F are impregnated in the commercially available cushion puff.
９　　：ダイカット成型機
４０　：積層体シート
４１　：側端部
９０　：金属刃体
１００：化粧料塗布具
１０５：リボン
１０８：基材層シート
１０９：未加硫ゴムラテックス
１１０：ゴムラテックス発泡体（加硫済）
１１２：外面
１１５：第１曲面
１１６：第２曲面
１２０：遮断層
１３０：短繊維
１４０：積層体
１４１：周縁部
１４２：中央部
１４５：上部側面
１４９：積層体
１９０：金属平板
６００：化粧料塗布具
６０４：積層体シート
６１０：ゴムラテックス発泡体（加硫済）
６１９：基材層シート
６４０：積層体
６４１：周縁部
８００：クッションパフ
８１０：湿式ポリウレタン樹脂発砲体
８２０：乾式ポリウレタン樹脂発砲体
８３０：湿式ポリウレタン樹脂発砲体
８４０：凸状部 9: Die-cut molding machine 40: Laminate sheet 41: Side end 90: Metal blade 100: Cosmetic applicator 105: Ribbon 108: Base layer sheet 109: Unvulcanized rubber latex 110: Rubber latex foam Sulfurized)
112: Outer surface 115: First curved surface 116: Second curved surface 120: Barrier layer 130: Short fiber 140: Laminate body 141: Peripheral portion 142: Center portion 145: Upper side surface 149: Laminate body 190: Metal flat plate 600: Cosmetic application Tool 604: Laminate sheet 610: Rubber latex foam (vulcanized)
619: Base material layer sheet 640: Laminate 641: Peripheral part 800: Cushion puff 810: Wet polyurethane resin foam 820: Dry polyurethane resin foam 830: Wet polyurethane resin foam 840: Convex part
　以下、本発明の実施形態に係る化粧料塗布具１００について説明する。 Hereinafter, the cosmetic applicator 100 according to the embodiment of the present invention will be described.
「化粧料塗布具」
　図１は、本発明の実施形態に係る化粧料塗布具１００の模式図の正面図である。図２は、図１に示す化粧料塗布具１００の模式図の裏面図である。図３は、図１に示すＳ－Ｓ線の断面図である。図４は、図３に示す積層体１４０の周縁部１４１周辺の断面写真図である。図５は、図３に示すゴムラテックス発泡体１１０の外面１１２近傍の断面写真図である。 "Cosmetic applicator"
FIG. 1 is a front view of a schematic diagram of a cosmetic applicator 100 according to an embodiment of the present invention. FIG. 2 is a rear view of the schematic diagram of the cosmetic applicator 100 shown in FIG. 1. 3 is a cross-sectional view taken along line SS shown in FIG. 4 is a cross-sectional photographic view of the periphery of the peripheral portion 141 of the laminate 140 shown in FIG. FIG. 5 is a cross-sectional photograph showing the vicinity of the outer surface 112 of the rubber latex foam 110 shown in FIG.
　なお、図４は、本発明者が積層体１４０の周縁部１４１周辺を、顕微鏡を用いて２０倍の倍率で撮影を行った写真図である。図５は、本発明者がゴムラテックス発泡体１１０の外面１１２近傍の断面を、顕微鏡を用いて２００倍の倍率で撮影を行った写真図である。 In addition, FIG. 4 is a photographic view in which the present inventors photographed the periphery of the peripheral portion 141 of the laminate 140 at a magnification of 20 times using a microscope. FIG. 5 is a photograph of the cross section near the outer surface 112 of the rubber latex foam 110 taken by the present inventor at a magnification of 200 times using a microscope.
　化粧料塗布具１００は図１から図３に示すように、基材層であるゴムラテックス発泡体１１０と、接着剤からなる遮断層１２０と、塗布層を構成する複数の短繊維１３０と、からなる三層構造の積層体１４０で構成され、その裏側には手の把持具としてリボン１０５が設けられており、この三層構造はパフ状の形状である。パフ状の形状とは、パフとして市場で販売されている化粧料塗布具の形状で、縦断面形状が楕円形状をしたものを意味する。 As shown in FIGS. 1 to 3, the cosmetic applicator 100 includes a rubber latex foam 110 as a base material layer, a blocking layer 120 made of an adhesive, and a plurality of short fibers 130 constituting the coating layer. The ribbon 105 is provided as a hand gripping tool on the back side, and this three-layer structure has a puff-like shape. The puff-like shape means a shape of a cosmetic applicator sold on the market as a puff and has an elliptical longitudinal cross-sectional shape.
　パフ状三層構造の積層体１４０は、圧着された環状の周縁部１４１と、その周縁部１４１より内側に位置する円柱状の中央部１４２とによって構成されている。この周縁部１４１の詳細は後述するが、常温の金属刃体９０（後述の図１０参照）で圧着切断して形成されている。そのため、この側端部４１は、熱溶着切断の周縁部に形成された凸状部８４０（図１５参照）と異なり、図３、図４に示すような滑らかな形状となっている。なお、周縁部１４１とは、化粧料塗布具１００の外周部分に位置し、中央部１４２より厚さの薄い部分である。 The laminated body 140 having a puff-like three-layer structure is composed of an annular peripheral edge portion 141 that is pressure-bonded and a columnar central portion 142 that is located inside the peripheral edge portion 141. Although details of the peripheral portion 141 will be described later, the peripheral portion 141 is formed by pressure cutting with a metal blade 90 (see FIG. 10 described later) at room temperature. Therefore, the side end portion 41 has a smooth shape as shown in FIGS. 3 and 4, unlike the convex portion 840 (see FIG. 15) formed at the peripheral edge portion of the thermal welding cut. The peripheral portion 141 is a portion that is located on the outer peripheral portion of the cosmetic applicator 100 and is thinner than the central portion 142.
　ゴムラテックス発泡体１１０は、複数の孔が連続してなる連続気泡構造を有する。ゴムラテックス発泡体１１０の密度は特に限定されないが、例えば０．１２ｇ／ｃｃ以上０．１５ｇ／ｃｃ以下である。ゴムラテックス発泡体１１０の外面１１２は、詳細を後述するダンロップ法により形成されるため、その表面は泡に由来する凹凸が小さく、外面１１２の最大粗さＲｚは、５０μｍ以下である。この最大粗さＲｚは、ＪＩＳ　Ｂ０６０１－２０１３に基づいて、断面の顕微鏡画像等から、基準長さ２．５ｍｍとして測定される値である。 The rubber latex foam 110 has an open cell structure in which a plurality of holes are continuous. The density of the rubber latex foam 110 is not particularly limited, and is, for example, 0.12 g / cc or more and 0.15 g / cc or less. Since the outer surface 112 of the rubber latex foam 110 is formed by the Dunlop method, which will be described in detail later, the surface has small irregularities derived from bubbles, and the maximum roughness Rz of the outer surface 112 is 50 μm or less. This maximum roughness Rz is a value measured as a reference length of 2.5 mm from a cross-sectional microscopic image or the like based on JIS B0601-2013.
　また、ゴムラテックス発泡体１１０は、ゴムラテックス発泡体１１０の表面のうち周縁部１４１に位置する第１曲面１１５と、ゴムラテックス発泡体１１０の裏面のうち周縁部１４１に位置する第２曲面１１６とを有する。 The rubber latex foam 110 includes a first curved surface 115 located at the peripheral edge portion 141 of the surface of the rubber latex foam 110, and a second curved surface 116 located at the peripheral edge portion 141 of the back surface of the rubber latex foam 110. Have
　ゴムラテックス発泡体１１０の素材は、特に限定されるものではないが、ＮＢＲ（アクリロニトリル－ブタジエンゴム）、ＳＢＲ（スチレン－ブタジエンゴム）、ＩＲ（イソプレンゴム）、ＮＲ（天然ゴム）、クロロプレンゴム等を用いることができる。尚、これらのうち、耐膨潤性、耐候性、耐油性等に優れるＮＢＲを用いるのが好ましい。 The material of the rubber latex foam 110 is not particularly limited, but NBR (acrylonitrile-butadiene rubber), SBR (styrene-butadiene rubber), IR (isoprene rubber), NR (natural rubber), chloroprene rubber, etc. Can be used. Of these, it is preferable to use NBR which is excellent in swelling resistance, weather resistance, oil resistance, and the like.
　ゴムラテックス発泡体１１０の裏面には図２に示すように、凸凹模様がエンボスによって形成されている。凸凹模様は例えば織物、編物、天然皮革などの模様である。これにより、化粧料塗布具１００は、滑り止め機能をゴムラテックス発泡体１１０の裏面に有する。なお、凸凹模様を裏面に設けなくても良い。 As shown in FIG. 2, an uneven pattern is formed on the back surface of the rubber latex foam 110 by embossing. The uneven pattern is, for example, a pattern of woven fabric, knitted fabric, natural leather or the like. Thereby, the cosmetic applicator 100 has an anti-slip function on the back surface of the rubber latex foam 110. Note that the uneven pattern may not be provided on the back surface.
　次に、ゴムラテックス発泡体１１０の厚みについて説明する。ゴムラテックス発泡体１１０の厚みが２ｍｍ未満である場合、人肌に対する弾性力が弱く、ゴムラテックス発泡体１１０のクッション性が低い。また、ゴムラテックス発泡体１１０の厚みが１０ｍｍを超える場合、化粧料塗布具１００の厚さが大きく使用が困難である。そのため、ゴムラテックス発泡体１１０の厚みは、例えば２ｍｍ以上１０ｍｍ以下であることが好ましい。 Next, the thickness of the rubber latex foam 110 will be described. When the thickness of the rubber latex foam 110 is less than 2 mm, the elastic force against human skin is weak and the cushioning property of the rubber latex foam 110 is low. Moreover, when the thickness of the rubber latex foam 110 exceeds 10 mm, the cosmetic applicator 100 is too thick and difficult to use. Therefore, the thickness of the rubber latex foam 110 is preferably 2 mm or more and 10 mm or less, for example.
　リボン１０５の両端は、ゴムラテックス発泡体１１０の裏面に縫製によって装着されている。使用者は、ゴムラテックス発泡体１１０の裏面とリボン１０５の両端間の中央部との間に指の挿入により化粧料塗布具１００が把持できる。 Both ends of the ribbon 105 are attached to the back surface of the rubber latex foam 110 by sewing. The user can hold the cosmetic applicator 100 by inserting a finger between the back surface of the rubber latex foam 110 and the central portion between both ends of the ribbon 105.
　遮断層１２０は、接着剤からなり、ゴムラテックス発泡体１１０の外面１１２上に設けられ、短繊維１３０をゴムラテックス発泡体１１０の外面１１２上に接着している。遮断層１２０は例えばアクリル系接着剤で構成されている。上記したように、ゴムラテックス発泡体１１０の外面１１２は凹凸が小さいので、接着剤からなる遮断層１２０は、外面１１２を隙間なく被覆することができる。 The blocking layer 120 is made of an adhesive, is provided on the outer surface 112 of the rubber latex foam 110, and bonds the short fibers 130 on the outer surface 112 of the rubber latex foam 110. The blocking layer 120 is made of, for example, an acrylic adhesive. As described above, since the outer surface 112 of the rubber latex foam 110 has small irregularities, the blocking layer 120 made of an adhesive can cover the outer surface 112 without a gap.
　次に、遮断層１２０の厚みについて説明する。遮断層１２０の厚みが０．０５ｍｍ未満である場合、遮断層１２０の形成が不完全となり、遮断層１２０は化粧料が短繊維１３０からゴムラテックス発泡体１１０の内部に浸透することを防止できない。また、遮断層１２０の厚みが０．２ｍｍを超える場合、遮断層１２０によって積層体１４０が硬くなるためゴムラテックス発泡体１１０のクッション性を損なう。そのため、遮断層１２０の厚みは、例えば０．０５ｍｍ以上０．２ｍｍ以下であることが好ましく、０．０６ｍｍ以上 ０．１８ｍｍ以下であることがより好ましく、０．０８ｍｍ以上０．１５ｍｍ以下であることが更に好ましい。 Next, the thickness of the blocking layer 120 will be described. When the thickness of the barrier layer 120 is less than 0.05 mm, the formation of the barrier layer 120 is incomplete, and the barrier layer 120 cannot prevent the cosmetic material from penetrating into the rubber latex foam 110 from the short fibers 130. Further, when the thickness of the barrier layer 120 exceeds 0.2 mm, the laminated body 140 is hardened by the barrier layer 120, so that the cushioning property of the rubber latex foam 110 is impaired. Therefore, the thickness of the blocking layer 120 is preferably 0.05 mm or more and 0.2 mm or less, more preferably 0.06 mm or more and 0.18 mm or less, and 0.08 mm or more and 0.15 mm or less. Is more preferable.
　複数の短繊維１３０は、静電植毛法により遮断層１２０の表面に立毛状態で接着され、遮断層１２０の表面に植毛面を形成している。塗布層は、遮断層１２０の表面に複数の短繊維１３０が植毛されてなる層である。 The plurality of short fibers 130 are adhered to the surface of the blocking layer 120 in a raised state by an electrostatic flocking method, and a flocked surface is formed on the surface of the blocking layer 120. The coating layer is a layer in which a plurality of short fibers 130 are planted on the surface of the blocking layer 120.
　短繊維１３０の素材は、特に限定されるものではないが、綿、麻、絹又は獣毛等の天然繊維、ナイロン６、ナイロン６６、ナイロン６１０等のポリアミド類、ポリエチレンテレフタレート、ポリトリメチレンテレフタレート、ポリブチレンテレフタレート等のポリエステル類、ポリアクリルニトリル、ビニロンもしくはレーヨン等のような合成繊維又は再生繊維を使用することができる。これらは、着色された繊維を使用することができる。例えば本実施形態において短繊維１３０はナイロン繊維で構成されている。 The material of the short fiber 130 is not particularly limited, but natural fibers such as cotton, hemp, silk or animal hair, polyamides such as nylon 6, nylon 66, nylon 610, polyethylene terephthalate, polytrimethylene terephthalate, Polyesters such as polybutylene terephthalate, synthetic fibers such as polyacrylonitrile, vinylon, or rayon, or recycled fibers can be used. For these, colored fibers can be used. For example, in this embodiment, the short fiber 130 is made of nylon fiber.
　次に、短繊維１３０の長さ（パイル長）と太さについて説明する。短繊維１３０の長さが０．５ｍｍより長い場合、短繊維１３０は洗濯されたときに立毛状態を維持できない。また、短繊維１３０の長さが０．１ｍｍより短い場合、短繊維１３０は必要量の化粧料を保持できない。そのため、短繊維１３０の長さは、０．１ｍｍ以上０．６ｍｍ以下であることが好ましい。また、短繊維１３０の太さは、通常０．５～３ｄＴｅｘ程度であることが好ましい。例えば本実施形態において短繊維１３０の長さは０．５ｍｍであり、短繊維１３０の太さは、１．１ｄＴｅｘである。なお、植毛の密度は特に限定されるものでなく、化粧料の保持性と肌への触感を考慮して適宜設定すればよい。 Next, the length (pile length) and thickness of the short fibers 130 will be described. When the length of the short fiber 130 is longer than 0.5 mm, the short fiber 130 cannot maintain a raised state when being washed. In addition, when the length of the short fiber 130 is shorter than 0.1 mm, the short fiber 130 cannot hold a necessary amount of cosmetic. Therefore, it is preferable that the length of the short fiber 130 is 0.1 mm or more and 0.6 mm or less. In addition, the thickness of the short fiber 130 is usually preferably about 0.5 to 3 dTex. For example, in this embodiment, the length of the short fiber 130 is 0.5 mm, and the thickness of the short fiber 130 is 1.1 dTex. In addition, the density of the flocking is not particularly limited, and may be set as appropriate in consideration of the retaining property of the cosmetic and the touch to the skin.
「化粧料塗布具の使用方法」
　次に、使用者が化粧料塗布具１００を用いて化粧料Ｆを肌に塗布する場面について説明する。
　図６は、滴下した化粧料Ｆが短繊維１３０に含浸した時の積層体１４０の要部の断面写真図である。図６は、本発明者が積層体１４０の要部の断面を、顕微鏡を用いて２０倍の倍率で撮影を行った写真図である。 "How to use cosmetic applicators"
Next, a scene in which the user applies the cosmetic F to the skin using the cosmetic applicator 100 will be described.
FIG. 6 is a cross-sectional photograph of the main part of the laminate 140 when the dropped cosmetic material F is impregnated in the short fibers 130. FIG. 6 is a photograph in which the inventor has photographed a cross section of a main part of the laminate 140 at a magnification of 20 times using a microscope.
　使用者は、リボン１０５に指を挿入し、短繊維１３０に化粧料Ｆを含浸させ、積層体１４０（ゴムラテックス発泡体１１０の裏面）を指で押圧しながら短繊維１３０の表面を肌に適宜接触させることによって、短繊維１３０に保持された化粧料Ｆを肌に塗布する。このとき、遮断層１２０は、凹凸の小さなゴムラテックス発泡体１１０の外面１１２上に形成されているため、極めて薄い厚さであっても、外面１１２上を隙間なく被覆し、化粧料Ｆが短繊維１３０からゴムラテックス発泡体１１０に浸透することを防止している（図６参照）。そして、化粧料塗布具１００は、短繊維１３０の長さ（塗布層の厚さ）が均一なので、化粧料Ｆが均等の厚さの塗布層に浸透する構造なので、積層体１４０（ゴムラテックス発泡体１１０の裏面）を指で押圧する圧力の加減で化粧料Ｆの塗布量が変化することを防いでおり、顔に化粧料Ｆを均一に塗布することができる（図６参照）。 The user inserts a finger into the ribbon 105, impregnates the short fiber 130 with the cosmetic F, and appropriately presses the surface of the short fiber 130 on the skin while pressing the laminate 140 (the back surface of the rubber latex foam 110) with the finger. By bringing them into contact, the cosmetic F held on the short fibers 130 is applied to the skin. At this time, since the blocking layer 120 is formed on the outer surface 112 of the rubber latex foam 110 with small unevenness, the outer surface 112 is covered without gaps even if the thickness is extremely thin, and the cosmetic F is short. Infiltration from the fiber 130 into the rubber latex foam 110 is prevented (see FIG. 6). And since the cosmetic applicator 100 has a structure in which the length of the short fibers 130 (thickness of the coating layer) is uniform and the cosmetic F penetrates into the coating layer of uniform thickness, the laminate 140 (rubber latex foam) The application amount of the cosmetic F is prevented from changing due to the pressure applied on the back surface of the body 110 with a finger, and the cosmetic F can be uniformly applied to the face (see FIG. 6).
　また、化粧料塗布具１００は、化粧料浸透防止の遮断層１２０がゴムラテックス発泡体１１０の凹凸の小さな外面１１２上に接合されているので、遮断層１２０は、極めて薄い厚さとすることができ、肌感触に優れている。 Further, in the cosmetic applicator 100, the barrier layer 120 for preventing penetration of the cosmetic material is joined to the small outer surface 112 of the rubber latex foam 110, so that the barrier layer 120 can be made extremely thin. Excellent skin feel.
　ここで、積層体１４０の周縁部１４１は、基材層の素材として未加硫発泡ゴムラテックスを用いることで、常温下で金属刃体９０を用いて周縁部１４１を圧着させることで、側端部４１が滑らかな形状に形成されている。この周縁部１４１は、後述の図９に示す積層体シート４０を、未加硫発泡ゴムラテックスが未加硫状態を維持したままダイカットする本実施形態の製造方法によって圧着される。周縁部１４１では孔が潰れ、孔を囲んでいた部分が圧縮されて接着している。これにより、短繊維１３０及び遮断層１２０は図３、図４に示すように、圧着されたゴムラテックス発泡体１１０の第１曲面１１５に沿って設けられている。 Here, the peripheral portion 141 of the laminate 140 is formed by using an unvulcanized foam rubber latex as a material for the base material layer, and by crimping the peripheral portion 141 using the metal blade 90 at room temperature, The part 41 is formed in a smooth shape. This peripheral portion 141 is pressure-bonded by a manufacturing method of this embodiment in which a laminate sheet 40 shown in FIG. 9 described later is die-cut while the unvulcanized foam rubber latex is maintained in an unvulcanized state. In the peripheral portion 141, the hole is crushed, and the portion surrounding the hole is compressed and bonded. As a result, the short fibers 130 and the barrier layer 120 are provided along the first curved surface 115 of the rubber latex foam 110 that has been pressure-bonded, as shown in FIGS. 3 and 4.
　また、化粧料塗布具１００は、周縁部１４１の上部側面１４５が植毛面（塗布層面）で形成されている。化粧料塗布具１００の側端部４１は、滑らかな形状を有し研削が不要なため、周縁部１４１も使用して顔の部位に応じた化粧ができ利便性に優れている。 Further, in the cosmetic applicator 100, the upper side surface 145 of the peripheral portion 141 is formed by a flocked surface (application layer surface). Since the side end portion 41 of the cosmetic applicator 100 has a smooth shape and does not require grinding, the peripheral portion 141 can also be used to make up makeup according to the facial region, which is excellent in convenience.
　また、凸凹模様が、圧着されたゴムラテックス発泡体１１０の第２曲面１１６に設けられている。そのため、化粧料塗布具１００は、周縁部１４１に位置する第２曲面１１６でも滑り止め機能を使用者に提供できる。 Further, the uneven pattern is provided on the second curved surface 116 of the rubber latex foam 110 that is pressure-bonded. Therefore, the cosmetic applicator 100 can provide the user with a non-slip function even on the second curved surface 116 located at the peripheral edge portion 141.
「化粧料塗布具の製造方法」
　次に、化粧料塗布具１００の製造方法について以下説明する。 "Manufacturing method of cosmetic applicator"
Next, the manufacturing method of the cosmetic applicator 100 will be described below.
　図７は、本発明の実施形態に係る化粧料塗布具１００の製造方法を示すフローチャートである。図８Ａは、図７のＳ１０１の工程中の基材層シート１０８の断面図である。図８Ｂは、図７のＳ１０２の工程中の基材層シート１０８及び遮断層１２９の断面図である。図８Ｃは、図７のＳ１０２の工程中の積層体シート４０の断面図である。図９は、図７のＳ１０３に示すダイカット工程の直前の様子を示す断面図である。図１０は、図７のＳ１０３に示すダイカット工程で積層体シート４０を打ち抜いた時の様子を示す断面図である。 FIG. 7 is a flowchart showing a method of manufacturing the cosmetic applicator 100 according to the embodiment of the present invention. FIG. 8A is a cross-sectional view of the base material layer sheet 108 during the process of S101 of FIG. FIG. 8B is a cross-sectional view of the base material layer sheet 108 and the blocking layer 129 during the process of S102 of FIG. FIG. 8C is a cross-sectional view of the laminate sheet 40 during the process of S102 of FIG. FIG. 9 is a cross-sectional view showing a state immediately before the die cutting process shown in S103 of FIG. FIG. 10 is a cross-sectional view showing a state when the laminate sheet 40 is punched out in the die cutting step shown in S103 of FIG.
　化粧料塗布具１００の製造方法は、Ｓ１０１からＳ１０３までの工程で未加硫発泡ゴムラテックスが未加硫状態を保つ温度で処理し、Ｓ１０４の工程で未加硫発泡ゴムラテックスを加硫する点、そして、Ｓ１０１の工程で未加硫発泡ゴムラテックスに凹凸の小さな外面を形成し、Ｓ１０２の工程でその外面に接着剤を塗布する点、を特徴とする。 The manufacturing method of the cosmetic applicator 100 is that the unvulcanized foamed rubber latex is treated at a temperature at which the unvulcanized foamed rubber latex is kept in an unvulcanized state in the steps from S101 to S103, and the unvulcanized foamed rubber latex is vulcanized in the step of S104. And, in the step of S101, a non-vulcanized foamed rubber latex is formed with an outer surface having small irregularities, and in the step of S102, an adhesive is applied to the outer surface.
　まず、図８Ａに示すように、発泡されたゴムラテックス原料を用いて、連続気泡型の未加硫発泡ゴムラテックスの基材層シート１０８を形成し、該未加硫発泡ゴムラテックスが未加硫状態を保つ温度で乾燥する（Ｓ１０１）。Ｓ１０１では、ダンロップ法により未加硫状態の基材層シート１０８を形成する。ダンロップ法は、ゴムラテックス原料に空気を注入しながら攪拌し、ケイフッ化ナトリウムの微粉末を添加し、マイクロ波を所定時間（例えば１５秒間）照射する方法である。ゴムラテックス原料はマイクロ波の照射によって、温度が急速に上がってｐＨが急速に低下して凝固し、基材層シート１０８となる。このとき、基材層シート１０８の上側及び下側界面は、内部と比較して泡の量が少ないため、凹凸の小さな外面１１２となる。 First, as shown in FIG. 8A, an open-cell unvulcanized foam rubber latex base material layer sheet 108 is formed using a foamed rubber latex raw material, and the unvulcanized foam rubber latex is unvulcanized. Drying is performed at a temperature that maintains the state (S101). In S101, the unvulcanized base material layer sheet 108 is formed by the Dunlop method. The Dunlop method is a method in which air is injected into a rubber latex raw material while stirring, a fine powder of sodium silicofluoride is added, and microwave irradiation is performed for a predetermined time (for example, 15 seconds). The rubber latex raw material is solidified by rapidly increasing the temperature and rapidly decreasing the pH by microwave irradiation to form the base material layer sheet 108. At this time, the upper and lower interfaces of the base material layer sheet 108 become the outer surface 112 with small irregularities because the amount of bubbles is small compared to the inside.
　なお、ゴムラテックス原料は、ゴムラテックス及び添加剤を含有する。ゴムラテックスのゴム成分としては、例えば、ＮＢＲ（アクリロニトリル－ブタジエンゴム）、ＳＢＲ（スチレン－ブタジエンゴム）、ＩＲ（イソプレンゴム）、ＮＲ（天然ゴム）、クロロプレンゴム等を用いることができる。尚、これらのうち、耐膨潤性、耐候性、耐油性等に優れるＮＢＲを用いるのが好ましい。 The raw material for rubber latex contains rubber latex and additives. As the rubber component of the rubber latex, for example, NBR (acrylonitrile-butadiene rubber), SBR (styrene-butadiene rubber), IR (isoprene rubber), NR (natural rubber), chloroprene rubber and the like can be used. Of these, it is preferable to use NBR which is excellent in swelling resistance, weather resistance, oil resistance, and the like.
　また、ゴムラテックスには、必要により、加硫剤、加硫促進剤、老化防止剤、気泡安定剤、加硫活性化剤、抗菌剤などの添加剤を本発明の目的を阻害しない範囲内で添加してもよい。これらの添加剤は、それぞれ単独で用いてもよく、２種類以上を併用してもよい。 Further, the rubber latex may contain additives such as a vulcanizing agent, a vulcanization accelerator, an anti-aging agent, a foam stabilizer, a vulcanization activator, and an antibacterial agent as long as they do not impair the purpose of the present invention. It may be added. These additives may be used alone or in combination of two or more.
　加硫剤は、例えば、硫黄、硫黄含有化合物などを用いることができる。加硫剤の配合量は、ゴムラテックスのゴム成分１００重量部に対して１重量部以下であることが好ましい。 As the vulcanizing agent, for example, sulfur or a sulfur-containing compound can be used. The blending amount of the vulcanizing agent is preferably 1 part by weight or less with respect to 100 parts by weight of the rubber component of the rubber latex.
　また、加硫促進剤は、例えば、メルカプトベンゾチアゾールナトリウム塩、メルカプトベンゾチアゾール亜鉛塩、Ｎ－エチル－Ｎ－フェニルジチオカルバミン酸亜鉛、ジメチルジチオカルバミン酸亜鉛、ジエチルジチオカルバミン酸亜鉛、ジブチルジチオカルバミン酸亜鉛、テトラメチルチウラムジスルフィドなどを用いることができる。ここで、Ｓ１０１からＳ１０３までの工程において加硫が勝手に進まないよう、加硫促進剤の内、分解速度が最も遅いメルカプトベンゾチアゾール系の加硫促進剤が好ましい。メルカプトベンゾチアゾール系の加硫促進剤は、例えばメルカプトベンゾチアゾールナトリウム塩またはメルカプトベンゾチアゾール亜鉛塩である。メルカプトベンゾチアゾール系の加硫促進剤の配合量は、ゴムラテックスのゴム成分１００重量部に対して１．５重量部以下であることが好ましい。化粧料塗布具１００の製造方法においてゴムラテックスに添加する加硫促進剤は、１重量部以下のメルカプトベンゾチアゾール系の加硫促進剤１種類のみである。これにより、メルカプトベンゾチアゾール系の加硫促進剤は、Ｓ１０１の工程において形成される基材層シート１０８が未加硫状態を維持できる時間を大きく延長できる。また、加硫促進剤の分解温度を超えると、加硫促進剤が分解されて加硫が進むため、Ｓ１０１からＳ１０３までの工程は、この分解温度を超えない温度で行う。 Examples of the vulcanization accelerator include mercaptobenzothiazole sodium salt, mercaptobenzothiazole zinc salt, zinc N-ethyl-N-phenyldithiocarbamate, zinc dimethyldithiocarbamate, zinc diethyldithiocarbamate, zinc dibutyldithiocarbamate, tetramethyl Thiuram disulfide and the like can be used. Here, a mercaptobenzothiazole-based vulcanization accelerator having the slowest decomposition rate is preferable among the vulcanization accelerators so that vulcanization does not proceed in steps S101 to S103. The mercaptobenzothiazole vulcanization accelerator is, for example, mercaptobenzothiazole sodium salt or mercaptobenzothiazole zinc salt. The blending amount of the mercaptobenzothiazole vulcanization accelerator is preferably 1.5 parts by weight or less with respect to 100 parts by weight of the rubber component of the rubber latex. The vulcanization accelerator added to the rubber latex in the method of manufacturing the cosmetic applicator 100 is only one type of mercaptobenzothiazole vulcanization accelerator of 1 part by weight or less. Accordingly, the mercaptobenzothiazole-based vulcanization accelerator can greatly extend the time during which the base material layer sheet 108 formed in the step S101 can maintain the unvulcanized state. If the decomposition temperature of the vulcanization accelerator is exceeded, the vulcanization accelerator is decomposed and vulcanization proceeds. Therefore, the steps from S101 to S103 are performed at a temperature not exceeding the decomposition temperature.
　また、気泡安定剤は、例えばトリメンベースなどを用いることができる。また、加硫活性化剤は、例えば亜鉛華（酸化亜鉛）などを用いることができる。加硫活性化剤の配合量は、ゴムラテックスのゴム成分１００重量部に対して１．５重量部以下であることが好ましい。また、抗菌剤は、例えばＺＰＴ（ジンクピリチオン）などを用いることができる。 Also, as the bubble stabilizer, for example, trimene base can be used. Further, as the vulcanization activator, for example, zinc white (zinc oxide) can be used. The blending amount of the vulcanization activator is preferably 1.5 parts by weight or less with respect to 100 parts by weight of the rubber component of the rubber latex. As the antibacterial agent, for example, ZPT (zinc pyrithione) can be used.
　次に、図８Ｂに示すように基材層シート１０８の外面１１２に接着剤を塗布して、図８Ｃに示すように遮断層１２０の表面に植毛面（複数の短繊維１３０からなる面）を静電植毛法によって形成して三層構造の積層体シート４０を形成する（Ｓ１０２）。Ｓ１０２の工程では、基材層シート１０８の外面１１２上に接着剤を塗布した場合、接着剤が外面１１２から基材層シート１０８の内部に殆ど浸透しない。そのため、Ｓ１０２の工程では、少量の接着剤によって、基材層シート１０８の外面１１２に接着剤からなる遮断層１２０を形成できる。 Next, an adhesive is applied to the outer surface 112 of the base material layer sheet 108 as shown in FIG. 8B, and a flocked surface (surface consisting of a plurality of short fibers 130) is formed on the surface of the blocking layer 120 as shown in FIG. 8C. A laminate sheet 40 having a three-layer structure is formed by electrostatic flocking (S102). In the process of S102, when an adhesive is applied on the outer surface 112 of the base material layer sheet 108, the adhesive hardly penetrates into the base material layer sheet 108 from the outer surface 112. Therefore, in the process of S102, the blocking layer 120 made of an adhesive can be formed on the outer surface 112 of the base material layer sheet 108 with a small amount of adhesive.
　なお、接着剤の塗布量は、製品の柔軟性を損なわない点と、短繊維１３０の脱離防止性の観点を考慮して設定すればよい。目安として、８０～１２０ｇ／ｍ2程度である。また、外面１１２は、最大Ｒｚが５０μｍ以下の面である。この最大粗さＲｚは、ＪＩＳ　Ｂ０６０１－２０１３に基づいて、断面の顕微鏡画像等から、基準長さ２．５ｍｍとして測定される値である。 In addition, what is necessary is just to set the application quantity of an adhesive agent in consideration of the point which does not impair the softness | flexibility of a product, and the viewpoint of the removal | desorption prevention property of the short fiber 130. FIG. As a guide, it is about 80 to 120 g / m 2 . The outer surface 112 is a surface having a maximum Rz of 50 μm or less. This maximum roughness Rz is a value measured as a reference length of 2.5 mm from a cross-sectional microscopic image or the like based on JIS B0601-2013.
　次に、Ｓ１０３のダイカット工程で使用するダイカット成型機９について図９を用いて説明する。ダイカット成型機９は、積層体シート４０が載置する金属平板１９０と、金属平板１９０に載置された積層体シート４０を打ち抜く枠体の金属刃体９０とを備える。金属刃体９０は、先端面と斜面とを有し、例えば１２０度程度の角度で傾斜したテーパー面になっており、また、先端面の幅が数ｍｍ程度の薄い平面になっており、これにより積層体シート４０を圧着して切断することができる。そして、金属刃体９０の硬度は金属平板１９０のそれよりも低いものを使用しており、金属平板１９０を損傷させない。 Next, the die cut molding machine 9 used in the die cut process of S103 will be described with reference to FIG. The die-cut molding machine 9 includes a metal flat plate 190 on which the laminate sheet 40 is placed, and a metal blade 90 that is a frame body that punches out the laminate sheet 40 placed on the metal plate 190. The metal blade 90 has a tip surface and a slope, for example, is a tapered surface inclined at an angle of about 120 degrees, and the tip surface is a thin flat surface with a width of about several millimeters. Thus, the laminate sheet 40 can be crimped and cut. The hardness of the metal blade 90 is lower than that of the metal flat plate 190, and the metal flat plate 190 is not damaged.
　次に、図９、図１０に示すように、上記三層構造の積層体シート４０を常温の金属刃体９０で押圧し、その押圧周縁部を圧着して切断する（Ｓ１０３）。これにより、圧着切断された三層構造の積層体１４９が形成される。積層体１４９は、塗布層を構成する複数の短繊維１３０と遮断層１２０と基材層である未加硫ゴムラテックス１０９とのパフ状三層構造で構成されている。ここで、未加硫ゴムラテックス１０９は、粘着力が高くまた弾性力が加硫状態のゴムラテックス発泡体１１０の弾性力より極めて低い。そのため、圧着切断された周縁部１４１は、粘着力の高い未加硫ゴムラテックス１０９に短繊維１３０と遮断層１２０が圧着された状態で切断されている。ダイカットする前の未加硫ゴムラテックス１０９の厚さは、他二層の５倍以上の厚さがあるが、その弾性力が極めて低いので圧着された状態が維持されている。 Next, as shown in FIGS. 9 and 10, the laminate sheet 40 having the three-layer structure is pressed with a metal blade 90 at room temperature, and the pressing peripheral edge is crimped and cut (S103). As a result, a laminate 149 having a three-layer structure cut by crimping is formed. The laminated body 149 has a puff-like three-layer structure of a plurality of short fibers 130 constituting the coating layer, the blocking layer 120, and an unvulcanized rubber latex 109 serving as a base material layer. Here, the unvulcanized rubber latex 109 has a high adhesive force and an elastic force that is extremely lower than the elastic force of the rubber latex foam 110 in a vulcanized state. Therefore, the peripheral edge portion 141 cut and crimped is cut in a state in which the short fibers 130 and the blocking layer 120 are pressure-bonded to the unvulcanized rubber latex 109 having a high adhesive force. The thickness of the unvulcanized rubber latex 109 before die-cutting is 5 times or more that of the other two layers, but the elastic force is extremely low, so that the pressure-bonded state is maintained.
　次に、上記圧着切断された三層構造の積層体１４９を加熱して、上記未加硫ゴムラテックス１０９を加硫する（Ｓ１０４）。加硫温度は例えば１００度以上の温度であり、加硫時間は例えば１．５時間程度である。Ｓ１０４の工程により周縁部１４１が圧着された形状のまま、塑性体である未加硫ゴムラテックス１０９は加硫されて、弾性体であるゴムラテックス１１０（図３参照）になる。また、側端部４１は、熱溶着で切断された周縁部に形成される凸状部８４０（図１５参照）でなく、図４に示すような滑らかな形状となる。そして、上記したように、ダイカットにより圧着切断された周縁部１４１は、ダイカットする前の未加硫ゴムラテックス１０９の厚さが、他二層の５倍以上であるが、その弾性力が極めて低いので圧着された状態が維持されていたのが、上記Ｓ１０４の工程で未加硫ゴムラテックス１０９が加硫化されると、その粘着力が喪失しながら弾性力が増え続けて、ゴムラテックス発泡体１１０が形成される。図４の断面写真図の側端部４１は、加硫化により弾性力が付加されたゴムラテックス発泡体１１０が外周側に膨出しているのに対して、短繊維１３０と遮断層１２０が変化しないことから、滑らかな形状に形成されていることを示している。したがって、図４はパフ状三層構造の積層体の上部側面が塗布層面で形成されていることは明らかである。 Next, the laminate 149 having a three-layer structure that has been crimped and cut is heated to vulcanize the unvulcanized rubber latex 109 (S104). The vulcanization temperature is, for example, 100 ° C. or more, and the vulcanization time is, for example, about 1.5 hours. The unvulcanized rubber latex 109, which is a plastic body, is vulcanized into the rubber latex 110 (see FIG. 3), which is an elastic body, with the peripheral portion 141 being pressed in the step S104. Moreover, the side edge part 41 becomes a smooth shape as shown in FIG. 4 instead of the convex part 840 (refer FIG. 15) formed in the peripheral part cut | disconnected by heat welding. And as above-mentioned, although the thickness of the unvulcanized rubber latex 109 before die cutting is 5 times or more of other two layers as for the peripheral part 141 cut | disconnected by die cutting, the elastic force is very low. Therefore, when the unvulcanized rubber latex 109 is vulcanized in the step of S104, the elastic force continues to increase while the adhesive force is lost, and the rubber latex foam 110 is maintained. Is formed. In the side end portion 41 of the cross-sectional photographic diagram of FIG. 4, the rubber latex foam 110 to which elastic force is applied by vulcanization swells to the outer peripheral side, whereas the short fibers 130 and the barrier layer 120 do not change. From this, it is shown that it is formed in a smooth shape. Therefore, FIG. 4 clearly shows that the upper side surface of the puff-like three-layer structure is formed by the coating layer surface.
　そして、脱臭処理の酸化洗浄、湯洗を行って乾燥し、リボン１０５を取り付けることで、図１～図３に示す本実施形態の化粧料塗布具１００を得る。 Then, the cosmetic applicator 100 of this embodiment shown in FIGS. 1 to 3 is obtained by performing oxidation cleaning and hot water washing for deodorization treatment, drying, and attaching the ribbon 105.
　以上より、本実施形態の製造方法は、基材層に連続気泡型未加硫ゴムラテックスの基材層シート１０８を用いて、熱溶着によりダイカットするのではなく、常温でダイカットするので、生産性に優れている。 From the above, the manufacturing method of the present embodiment uses the base layer sheet 108 of open-cell unvulcanized rubber latex as the base layer, and does not die-cut by heat welding, but die-cuts at room temperature, so productivity Is excellent.
「化粧料塗布具の製造方法の具体例」
　以下、具体例によってさらに詳しく本実施形態の製造方法を説明する。 "Specific examples of methods for manufacturing cosmetic applicators"
Hereinafter, the manufacturing method of this embodiment will be described in more detail by way of specific examples.
　ＮＢＲゴムラテックス（日本ゼオン株式会社製　商品名：ニポール５３１Ｂ）９６重量部、硫黄粉末１．０重量部、加硫促進剤（大内新興株式会社製　商品名：ノクセラーＭＺ）１．５重量部、老化防止剤（クラリアント　ジャパン株式会社製　商品名：ＢＨＴ）１．２重量部、気泡安定剤（広栄化学株式会社製　商品名：トリメンベース）１．１重量部、及び抗菌剤サンアイゾール１００（ＺＰＴ）（三愛石油株式会社製）１．０重量部を含有するゴムラテックス原料を準備した。次に、ゴムラテックス原料に空気を注入しながらオークスミキサーを用いて攪拌し、ボールミルで粉砕した７５ｇのケイフッ化ソーダの微粉末分散液（２５％液）を添加しつつ８ｍｍの厚さにコーティングした。次に、発泡されたゴムラテックスシート（８ｍｍｔ）に対して５ＫＷのマイクロ波を約２０秒間照射し、連続気泡型の未加硫発泡ＮＢＲゴムラテックスの基材層シート（凝固シート）を形成した。そして、この基材層シートを、該未加硫発泡ＮＢＲゴムラテックスが未加硫状態を保つ温度（６０℃）で乾燥させ、外面の凹凸が小さい基材層シートを得た。 96 parts by weight of NBR rubber latex (manufactured by Nippon Zeon Co., Ltd., trade name: Nipol 531B), 1.0 part by weight of sulfur powder, 1.5 parts by weight of vulcanization accelerator (trade name: Noxeller MZ made by Ouchi Shinsei Co., Ltd.) Anti-aging agent (Clariant Japan Co., Ltd., trade name: BHT) 1.2 parts by weight, bubble stabilizer (Guangei Chemical Co., Ltd., trade name: Trimen Base) 1.1 parts by weight, and antibacterial agent Sanisol 100 (ZPT) A rubber latex raw material containing 1.0 part by weight (manufactured by Sanai Oil Co., Ltd.) was prepared. Next, the rubber latex raw material was stirred using an Oaks mixer and coated with a thickness of 8 mm while adding 75 g of a fine powder dispersion (25% liquid) of sodium fluorosilicate crushed by a ball mill. . Next, the foamed rubber latex sheet (8 mmt) was irradiated with 5 KW microwave for about 20 seconds to form a base layer sheet (coagulated sheet) of open-cell unvulcanized foamed NBR rubber latex. And this base material layer sheet was dried at the temperature (60 degreeC) by which this unvulcanized foaming NBR rubber latex maintains an unvulcanized state, and the base material layer sheet with the small unevenness | corrugation of an outer surface was obtained.
　次に、アクリル酸エステルエマルジョン系接着剤を基材層シートの外面に塗布し（塗布量１００ｇ／ｍ２）、静電植毛機を通して、中部パイル株式会社製のナイロン６６のパイル（繊度１．１Ｄｔｅｘ、パイル長０．５mm）を植毛して三層構造の積層体シートを得た。そして、三層構造の積層体シートを常温の金属刃体で押圧し、その押圧周縁部を圧着して直径５２ｍｍの円形形状に切断した。そして、上記圧着切断された三層構造の積層体を１１０℃で６０分間加熱して、上記未加硫発泡ＮＢＲゴムラテックスを加硫した。 Next, an acrylic ester emulsion-based adhesive was applied to the outer surface of the base layer sheet (coating amount 100 g / m 2 ), and passed through an electrostatic flocking machine, a nylon 66 pile (fineness 1.1 Dtex) manufactured by Chubu Pile Co., Ltd. , Pile length 0.5 mm) was planted to obtain a laminate sheet having a three-layer structure. Then, the laminate sheet having a three-layer structure was pressed with a metal blade at room temperature, and the pressing peripheral edge was crimped and cut into a circular shape having a diameter of 52 mm. And the laminated body of the three-layer structure cut by pressure cutting was heated at 110 ° C. for 60 minutes to vulcanize the unvulcanized foamed NBR rubber latex.
　そして、脱臭処理の酸化洗浄、湯洗を行って乾燥し、リボンを取り付けることで、化粧料塗布具を得た。得られた化粧料塗布具は、約５０００ｃｐｓの低粘度の液状ファンデーション化粧料が短繊維からＮＢＲゴムラテックス発泡体に浸透することを遮断層によって防止できた（図６参照）。 Then, a cosmetic applicator was obtained by performing oxidation cleaning and dewatering treatment for deodorizing treatment, drying, and attaching a ribbon. The obtained cosmetic applicator was able to prevent the low-viscosity liquid foundation cosmetic of about 5000 cps from penetrating from the short fibers into the NBR rubber latex foam (see FIG. 6).
　そのため、得られた化粧料塗布具は、化粧料が均等の厚さの塗布層に浸透する構造なので、ＮＢＲゴムラテックス発泡体の裏面を指で押圧する圧力の加減で化粧料の塗布量が変化することを防いでおり、顔に化粧料を均一に塗布することができた。 Therefore, since the obtained cosmetic applicator has a structure in which the cosmetic penetrates into the coating layer of an equal thickness, the amount of cosmetic applied varies depending on the pressure applied to the back of the NBR rubber latex foam with a finger. It was possible to apply cosmetics evenly on the face.
　そして、得られた化粧料塗布具は、化粧料浸透防止の遮断層がＮＢＲゴムラテックス発泡体の凹凸の小さな外面上に接合されているので、遮断層は極めて薄い厚さとすることができ、肌感触に優れていた。 In the cosmetic applicator obtained, the barrier layer for preventing penetration of the cosmetic material is bonded onto the small outer surface of the NBR rubber latex foam, so that the barrier layer can be made extremely thin, It was excellent in touch.
　また、得られた化粧料塗布具は、周縁部の上部側面が植毛面（塗布層面）で形成されているので、周縁部も使用して顔の部位に応じた化粧ができ利便性に優れていた。 Moreover, since the upper side surface of the peripheral part is formed by the flocked surface (application layer surface), the obtained cosmetic applicator can make up according to the facial part using the peripheral part and is excellent in convenience. It was.
「比較例に係る化粧料塗布具の製造方法」
　次に、図７に示す化粧料塗布具１００の製造方法の比較例に係る化粧料塗布具６００の製造方法について以下説明する。 "Method for manufacturing cosmetic applicator according to comparative example"
Next, the manufacturing method of the cosmetic applicator 600 according to the comparative example of the manufacturing method of the cosmetic applicator 100 shown in FIG. 7 will be described below.
　図１１は、図７に示す化粧料塗布具１００の製造方法の比較例に係る化粧料塗布具６００の製造方法を示すフローチャートである。図１２は、図１１のＳ１０４中の積層体シート６０４の断面図である。図１３は、図１１のＳ１０３に示すダイカット工程で積層体シート６０４を打ち抜いた時の様子を示す断面図である。図１４は、図１１に示す製造方法で製造される化粧料塗布具６００の断面図である。 FIG. 11 is a flowchart showing a method for manufacturing cosmetic applicator 600 according to a comparative example of the method for manufacturing cosmetic applicator 100 shown in FIG. FIG. 12 is a cross-sectional view of the laminate sheet 604 in S104 of FIG. FIG. 13 is a cross-sectional view showing a state when the laminate sheet 604 is punched out in the die cutting step shown in S103 of FIG. FIG. 14 is a cross-sectional view of a cosmetic applicator 600 manufactured by the manufacturing method shown in FIG.
　図１１に示す化粧料塗布具６００の製造方法が図７に示す化粧料塗布具１００の製造方法と相違する点は、Ｓ１０３の工程とＳ１０４の工程とを入れ替えた点である。その他の工程に関しては同じであるため、説明を省略する。 11 is different from the manufacturing method of the cosmetic applicator 100 shown in FIG. 7 in that the process of S103 and the process of S104 are interchanged. Since the other steps are the same, description thereof is omitted.
　Ｓ１０１とＳ１０２の工程を経た後、図８Ｃに示す積層体シート４０を加熱して、上記未加硫ゴムラテックスの基材層シート１０８を加硫する（Ｓ１０４）。これにより、図１２に示すように、短繊維１３０と遮断層１２０と加硫ゴムラテックスの基材層シート６１９とからなる三層構造の積層体シート６０４が形成される。 After the steps of S101 and S102, the laminate sheet 40 shown in FIG. 8C is heated to vulcanize the base layer sheet 108 of the unvulcanized rubber latex (S104). Thus, as shown in FIG. 12, a laminate sheet 604 having a three-layer structure composed of the short fibers 130, the blocking layer 120, and the base material layer sheet 619 of vulcanized rubber latex is formed.
　次に、図１３に示すように、上記三層構造の積層体シート６０４を常温の金属刃体９０で押圧し、その押圧周縁部を圧着して切断する（Ｓ１０３）。これにより、図１４に示すように、塗布層を構成する複数の短繊維１３０と遮断層１２０と基材層である加硫状態のゴムラテックス発泡体６１０との三層構造の積層体６４０が形成される。 Next, as shown in FIG. 13, the laminate sheet 604 having the three-layer structure is pressed with a metal blade 90 at room temperature, and the pressing peripheral edge is crimped and cut (S103). As a result, as shown in FIG. 14, a laminate 640 having a three-layer structure of a plurality of short fibers 130 constituting the coating layer, the blocking layer 120, and a vulcanized rubber latex foam 610 as a base material layer is formed. Is done.
　ここで、加硫状態のゴムラテックス発泡体６１０の弾性力は、未加硫状態のゴムラテックス発泡体の弾性力より極めて大きい。そのため、加硫状態のゴムラテックス発泡体６１０では、ダイカット工程の金属刃体９０によって圧縮して切断された周縁部６４１が加硫ゴムラテックス発泡体６１０の弾性力によって、圧縮される前の元の形状に復元する。そのため、圧着により接着されない周縁部６４１を有する直方体状の積層体６４０が形成されるので、パフ形状に形成するには、その側面を研削するする必要がある。そのため、時間とコストがかかり生産性が悪い。 Here, the elastic force of the rubber latex foam 610 in the vulcanized state is extremely larger than the elastic force of the rubber latex foam in the unvulcanized state. Therefore, in the rubber latex foam 610 in a vulcanized state, the peripheral edge portion 641 compressed and cut by the metal blade 90 in the die cutting process is restored to the original state before being compressed by the elastic force of the vulcanized rubber latex foam 610. Restore shape. Therefore, a rectangular parallelepiped laminated body 640 having a peripheral edge portion 641 that is not bonded by pressure bonding is formed. Therefore, in order to form a puff shape, it is necessary to grind the side surface. Therefore, it takes time and cost and productivity is poor.
　したがって、図１１に示す比較例の化粧料塗布具６００では側端部を研削する。そのため、化粧料Ｆが積層体６４０の側面からゴムラテックス発泡体６１０の基材層内部に浸透し易く、化粧料Ｆを無駄に消費するし、側面を使用することができない。 Therefore, in the cosmetic applicator 600 of the comparative example shown in FIG. Therefore, the cosmetic F easily penetrates into the base material layer of the rubber latex foam 610 from the side surface of the laminated body 640, consumes the cosmetic F wastefully, and cannot use the side surface.
　したがって、本発明の化粧料塗布具の製造方法は、Ｓ１０１からＳ１０３までの工程で未加硫発泡ゴムラテックスが未加硫状態を保つ温度で処理し、Ｓ１０４の工程で未加硫発泡ゴムラテックスを加硫する点、そして、Ｓ１０１の工程で外面の凹凸が小さい未加硫発泡ゴムラテックスを形成し、Ｓ１０２の工程でその外面に接着剤を塗布する点、を特徴とするものである。 Therefore, in the method for manufacturing the cosmetic applicator of the present invention, the unvulcanized foam rubber latex is treated at a temperature at which the unvulcanized foam rubber latex is kept in the unvulcanized state in the steps from S101 to S103, and the unvulcanized foam rubber latex is treated in the step of S104. It is characterized in that it is vulcanized, and an unvulcanized foamed rubber latex with small irregularities on the outer surface is formed in step S101, and an adhesive is applied to the outer surface in step S102.
　上記特徴とする工程を備えたことで、厚さが極めて薄い接着剤からなる遮断層１２０で化粧料が基材層内部に浸透することが防止でき、また、基材層に未加硫の連続気泡型ゴムラテックス発泡体の基材層シート１０８を用いて、熱溶着によりダイカットするのではなく、常温でダイカットするので、生産性に優れている。
  By providing the process characterized by the above, it is possible to prevent the cosmetic material from penetrating the inside of the base material layer by the barrier layer 120 made of an extremely thin adhesive, and the base material layer is continuously unvulcanized. Since the base layer sheet 108 of the foamed rubber latex foam is used, die cutting is performed at room temperature instead of die cutting by heat welding, so that productivity is excellent.

Claims (9)

  1. 　連続気泡型ゴムラテックス発泡体からなる基材層と、
    　接着剤からなる遮断層と、
    　前記遮断層の表面に複数の短繊維が植毛されてなる塗布層が、
    　この順に積層され、周縁部が圧着されてなる積層体からなることを特徴とする化粧料塗布具。     A base material layer comprising an open-cell rubber latex foam;
    A barrier layer made of adhesive;
    A coating layer in which a plurality of short fibers are planted on the surface of the blocking layer,
    A cosmetic applicator characterized by comprising a laminated body laminated in this order and having a peripheral edge pressed.
  2. 　前記基材層の表面の全面に前記遮断層及び前記塗布層が設けられ、
    　前記周縁部の上部側面が前記塗布層面で形成されていることを特徴とする請求項１に記載の化粧料塗布具。     The barrier layer and the coating layer are provided on the entire surface of the base material layer,
    The cosmetic applicator according to claim 1, wherein an upper side surface of the peripheral edge is formed by the coating layer surface.
  3. 　前記連続気泡型ゴムラテックス発泡体がＮＢＲゴムラテックスであることを特徴とする請求項１又は２に記載の化粧料塗布具。 The cosmetic applicator according to claim 1 or 2, wherein the open-cell rubber latex foam is NBR rubber latex.
  4. 　前記遮断層がアクリル系接着剤で構成されていることを特徴とする請求項１乃至３のいずれか１項に記載の化粧料塗布具。 The cosmetic applicator according to any one of claims 1 to 3, wherein the barrier layer is made of an acrylic adhesive.
  5. 　前記遮断層の厚みが０．０５ｍｍ以上０．２ｍｍ以下であることを特徴とする請求項１乃至４のいずれか１項に記載の化粧料塗布具。 The cosmetic applicator according to any one of claims 1 to 4, wherein the barrier layer has a thickness of 0.05 mm to 0.2 mm.
  6. 　連続気泡型ゴムラテックス発泡体の基材層と、
    　上記基材層と塗布層を接着する遮断層と、
    　該遮断層の表面に複数の短繊維が植毛されてなる塗布層と、からなるパフ状三層構造の積層体からなり、
    　上記積層体の周縁部が常温の金属刃体で圧着切断して形成されていることを特徴とする化粧料塗布具。     A base layer of open-cell rubber latex foam,
    A blocking layer for bonding the base material layer and the coating layer;
    A coating layer in which a plurality of short fibers are planted on the surface of the blocking layer, and a puff-like three-layer laminate,
    A cosmetic applicator characterized in that a peripheral edge of the laminate is formed by crimping and cutting with a metal blade at room temperature.
  7. 　発泡されたゴムラテックス原料を用いて、連続気泡型の未加硫発泡ゴムラテックスの基材層シートを形成し、該未加硫発泡ゴムラテックスが未加硫状態を保つ温度で乾燥させる工程と、
    　上記基材層シートの外面に接着剤を塗布して、その接着剤層の表面に植毛面を形成して三層構造の積層体シートを形成する工程と、
    　上記三層構造の積層体シートを常温の金属刃体で押圧し、その押圧周縁部を圧着して切断するダイカット工程と、
    　上記圧着切断された三層構造の積層体を加熱して、上記未加硫発泡ゴムラテックスを加硫する工程と、
    　からなることを特徴とする化粧料塗布具の製造方法。     Using a foamed rubber latex raw material, forming a base layer sheet of an open-cell unvulcanized foam rubber latex, and drying at a temperature at which the unvulcanized foam rubber latex maintains an unvulcanized state;
    Applying an adhesive to the outer surface of the base material layer sheet, forming a flocked surface on the surface of the adhesive layer to form a three-layer laminate sheet;
    A die cutting step in which the laminate sheet having the three-layer structure is pressed with a metal blade at room temperature, and the pressing peripheral edge is crimped and cut,
    Heating the crimped and cut three-layer laminate to vulcanize the unvulcanized foam rubber latex;
    The manufacturing method of the cosmetic applicator characterized by comprising.
  8. 　前記ゴムラテックス原料がＮＢＲゴムラテックスであることを特徴とする請求項７に記載の化粧料塗布具の製造方法。 The method for producing a cosmetic applicator according to claim 7, wherein the rubber latex raw material is NBR rubber latex.
  9. 　前記接着剤がアクリル系接着剤であることを特徴とする請求項７又は８に記載の化粧料塗布具の製造方法。
          The method for producing a cosmetic applicator according to claim 7 or 8, wherein the adhesive is an acrylic adhesive.
PCT/JP2018/013794 2017-04-03 2018-03-30 Liquid foundation cosmetic applicator, and production method for said cosmetic applicator WO2018186306A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017073864A JP2020099368A (en) 2017-04-03 2017-04-03 Liquid foundation cosmetic application tool and production method of cosmetic application tool
JP2017-073864 2017-04-03

Publications (1)

Publication Number Publication Date
WO2018186306A1 true WO2018186306A1 (en) 2018-10-11

Family

ID=63713062

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/013794 WO2018186306A1 (en) 2017-04-03 2018-03-30 Liquid foundation cosmetic applicator, and production method for said cosmetic applicator

Country Status (2)

Country Link
JP (1) JP2020099368A (en)
WO (1) WO2018186306A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005102710A (en) * 2003-09-26 2005-04-21 Kenji Nakamura Cosmetic powder puff and production method thereof
JP2011045676A (en) * 2009-08-28 2011-03-10 Kenji Nakamura Cosmetic applicator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005102710A (en) * 2003-09-26 2005-04-21 Kenji Nakamura Cosmetic powder puff and production method thereof
JP2011045676A (en) * 2009-08-28 2011-03-10 Kenji Nakamura Cosmetic applicator

Also Published As

Publication number Publication date
JP2020099368A (en) 2020-07-02

Similar Documents

Publication Publication Date Title
JP4505652B1 (en) Cosmetic applicator
AU2004288868B2 (en) Substrate provided with a dressing
CN104114134B (en) Synthetic granulating gauze for use with reduced-pressure treatment systems
ZA200508275B (en) Substrate provided with a dressing
JP4753228B2 (en) Cosmetic puff
WO2018186306A1 (en) Liquid foundation cosmetic applicator, and production method for said cosmetic applicator
WO2018186305A1 (en) Liquid foundation cosmetic applicator, and production method for said cosmetic applicator
JP4540148B2 (en) Manufacturing method of cushion with skin material
JP2007000167A (en) Tennis ball and manufacturing method of tennis ball
JP2005087315A (en) Gas inflated type ball for sports
KR20180107798A (en) Cosmetic puff and manufacturing method thereof
JPH0415681B2 (en)
JP2008029820A (en) Method for manufacturing make-up sponge puff
JP3240453U (en) Cosmetic puff and its manufacturing method
JPS6255404B2 (en)
KR20190121970A (en) Puffs flocked to the surface of artificial leather of polyurethane and method of manufacturing the same
JP3267723B2 (en) Manufacturing method of cosmetic tools
KR20200072832A (en) Insole pattern forming method
JP2020005684A (en) Cosmetic puff and manufacturing method therefor
US20030198822A1 (en) Leather assembly and method of fabricating a leather assembly
JP3078159U (en) Makeup tools
JPH0233383A (en) Synthetic leather
JP4153594B2 (en) Method for producing foamed rubber fabric using dyed surface fabric
JP2012016827A (en) Rubber sponge sheet material and method for producing the same, and wet suits using the rubber sponge sheet material
JPH09193313A (en) Skin material, its production and polyurethane foam integral molding

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18780915

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18780915

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP