JP2010148758A - Liquid applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid applicator for continuously applying a fixed amount of application liquid without giving stress on a surface to be coated. <P>SOLUTION: The liquid applicator made of a resin has a cross-section having a plurality of projections from a profile portion to an inner part, and an application liquid passage formed between the projections and the profile portion. Bristles are planted in an application part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid applicator useful as a cosmetic, a writing instrument, and a drug application.

As the liquid applicator, there is an extrusion type (for example, Patent Document 1) in which a coating liquid filled in a coating liquid filling part of a pen-type container is applied by being pushed out to an outer surface of the application part through a communication path by an extrusion mechanism.
However, these extrusion-type liquid applicators can hold a high-viscosity liquid such as lip gloss in the coating liquid filling part or in the communication path, but a low-viscosity liquid such as a skin care liquid is contained in the coating liquid filling part or It is difficult to hold in the communication path.
In addition, it is difficult to adjust the amount of the coating liquid to be pushed out to the outer surface of the coating part, and it is difficult to apply an appropriate amount due to excessive supply due to excessive extrusion of the coating liquid. was there.

On the other hand, there is a synthetic fiber applicator (for example, Patent Document 2) capable of sucking the coating liquid filled in the batting inside the body with a capillary force and applying a certain amount to the extrusion liquid applicator. is there.
However, since the liquid applicator made of synthetic fibers forms the passage of the coating liquid in a state where the fibers are intertwined in a complicated manner, when the coating liquid contains components such as lame and pearl, There is a problem that it is difficult to get caught in the passage of the coating liquid.

Further, with respect to the above problem, a synthetic resin liquid applicator (for example, having a plurality of protrusions inward from the outer portion in the cross section and forming a coating liquid passage between the protrusion and the outer portion in the cross section (for example, Patent Document 3).
In the synthetic resin liquid applicator, since the flow path of the coating liquid is formed straight along the axial direction, even if the coating liquid contains components such as lame and pearl, it allows them to pass through. Is easy.
However, the surface of the application part is hard, and when applied to delicate parts such as the skin, pain may be felt or damaged.
Japanese Patent Laid-Open No. 10-192045 JP 2006-198047 A JP 2003-25783 A

  An object of this invention is to provide the liquid applicator which can apply | coat a fixed amount of coating liquid continuously, and can apply | coat, without giving excessive stress to the surface to apply | coat.

  The present invention relates to a synthetic resin liquid applicator having a plurality of projections inward from the outer portion in a cross section, and forming a coating liquid passage between the projection and the outer portion. The present invention relates to a synthetic resin liquid applicator characterized by being planted.

  According to the present invention, it is possible to continuously apply a certain amount of the coating liquid sucked up by the capillary force from the coating liquid filling portion, and to apply without applying excessive stress to the surface to be applied. An applicator can be provided.

  In addition, since the pile of the hair-applied application part enters a fine part of the surface to be applied, it is possible to apply the coating liquid not only when the surface to be applied is a flat surface but also with an uneven surface Tools can also be provided.

  In addition, since the pile of the planted application part is entangled with fibers such as hair, eyelashes, and eyebrows, a liquid applicator that can efficiently apply the coating liquid even when it is fibrous is also provided can do.

  In addition, by adjusting the application pressure, it becomes possible to adjust the amount of coating liquid to be applied to the surface to be applied. Especially when the application pressure is reduced, a liquid applicator that can express the level of hair, such as eyebrows Can also be provided.

  In addition, since the planted application part holds a lot of coating liquid, it is difficult for the application part to dry out when the cap is removed, and it is possible to supply a large amount of coating liquid to the application surface. A simple liquid applicator can also be provided.

  The present invention will be specifically described below.

  Examples of the synthetic resin that is the material of the liquid applicator in the present invention include polyethylene, polypropylene, acrylic resin, polyethylene terephthalate, polyamide, polyacetal, polybutylene terephthalate, polyether ether ketone, polyvinylidene fluoride, polyether sulfone, and the like. And those containing fillers such as fillers and additives.

  Further, examples of a material having elasticity in the entire coated portion include polyurethane elastomers, polyester elastomers, polyamide elastomers, and the like.

In the liquid applicator according to the present invention, these thermoplastic resins are molded into a required cross-sectional shape and dimensions by melt extrusion molding, then cut to a specified length, and the tip and rear ends are polished to prepare the liquid applicator. It is obtained by the manufacturing method to obtain and other well-known manufacturing methods.
The outer diameter of the liquid applicator excluding the flocked part can be 0.2 to 5 mmφ in the case of a round bar, but it is 0.38 in that it is easy to melt-extrusion and does not cause insufficient strength during use. ˜3.5 mmφ is preferred.

  The flocking on the surface of the application portion in the present invention is, for example, a method in which a pile is planted on the surface of the application portion to which an adhesive has been applied in advance using an electrostatic attraction force in a high-voltage electrostatic field, and then the adhesive layer is dried, heated, It is obtained by electrostatic flocking, which is a processing method for fixing a pile planted by curing, and other known flocking methods.

  The pile to be planted on the surface of the coated part is, for example, natural fibers such as cotton, silk, wool, hemp, synthetic fibers such as polyester, nylon, vinylon, polyacetal, polyurethane, acrylic, aramid, semi-synthetic fibers such as acetate, rayon, etc. Recycled fibers such as cupra and polynosic, polyethylene, polypropylene, polystyrene, polyvinyl chloride and the like having a fiber diameter of 0.55 to 66 dtex and a fiber length of 0.3 to 5 mm.

  The adhesive used for flocking to the coated part surface is, for example, an acrylate resin emulsion adhesive, an acrylate-vinyl acetate copolymer emulsion adhesive, a polyvinyl acetate emulsion adhesive, or a polyurethane resin emulsion. Adhesive, polyester emulsion adhesive, epoxy resin emulsion adhesive, ethylene-vinyl acetate copolymer (EVA) adhesive, styrene butadiene rubber (SBR) latex adhesive, nitrile rubber (NBR) latex adhesive Agents, polyurethane resin solvent-based adhesives, and epoxy resin solvent-based adhesives.

  Embodiments of the present invention will be described based on examples.

  FIG. 1 illustrates an embodiment of the liquid applicator according to the present invention, in which a pellet made of polyacetal resin is melt-extruded from a forming die having a shaping opening having a shape similar to the cross-sectional shape to be formed. Thus, a 1 mmφ rod-shaped molded product having a liquid guide passage in the axial direction was obtained. Then, it cut | disconnected to the designated length and grind | polished the front-end | tip and the rear end, and obtained the cannonball-shaped liquid applicator. Thereafter, an acrylic resin, which is an adhesive for electrostatic flocking, is applied to the surface of the application part of the synthetic resin liquid applicator, and a nylon pile of 0.9 dtex and a length of 0.4 mm is electrostatically flocked. A liquid applicator was obtained.

  In FIG. 2, one form of the cross-sectional shape in the liquid applicator of this invention is illustrated.

  FIG. 3 exemplifies one mode of use of the liquid applicator of the present invention. The liquid applicator of the present invention is assembled using a holder in a body having a coating liquid filling portion such as batting inside. It is a thing.

  FIG. 4 illustrates another embodiment of the liquid applicator according to the present invention, in which the tip of the round bar-shaped molded product obtained by the above method has a chisel shape and the rear end has a ring-shaped groove. It is obtained by polishing into a stepped shape having, and then flocking on the surface of the application part.

  FIG. 5 illustrates another embodiment of the liquid applicator of the present invention, in which the front end and the rear end of the round bar-shaped molded product obtained by the above method are polished into a substantially conical shape, and then The outer peripheral portion of the round bar-shaped molded product was polished to provide a shank portion, and the surface of the coated portion was planted.

  As mentioned above, although the Example of this invention was described, this invention is not limited to these embodiment at all.

  For example, the liquid guide passage in the present invention has an appropriate cross-sectional shape having a capillary force capable of guiding the coating liquid in the axial direction, and the cross-sectional shape is free including known ones and is not limited at all.

  Moreover, the composition which mixed and disperse | distributed the polyethyleneglycol which has hydrophilic property and is utilized as a nonionic active agent to the thermoplastic resin which is the material of the liquid applicator in this invention may be sufficient.

  The applicator may have a round bar shape, a square bar shape, or any other appropriate shape, and the application surface portion of the applicator may have any known shape such as a brush shape, a nail shape, or a chisel shape.

  Further, as shown in FIG. 5, it may be processed into a stepped shape having a shank portion in accordance with a holder for assembling the liquid applicator, or liquid supply to the outer peripheral portion or shank portion of the applicator as shown in FIG. A ring-shaped groove effective for positioning may be provided, or although not shown, a vertical groove effective for air replacement or the like may be provided.

  Moreover, you may coat | cover the applicator outer peripheral part with polyacetal resin etc.

  Moreover, you may set the color of the synthetic resin which is the material of an applicator, the pile to be planted, and the coating | coated part to various colors according to the color of a coating liquid, and a use application.

  Further, the surface of the application part where the pile is flocked may be preliminarily treated with a primer to increase the adhesive force.

  The pile shape may be any of known shapes such as a bending type (bending type), a linear type, and a curled type.

  In addition, by expanding the range in which the pile is planted, not only a coating liquid such as a fragrance such as a perfume or a deodorant may be applied, but also a function of diffusing may be provided.

  The liquid applicator of the present invention is useful for cosmetic purposes, for example, eyeliner, eyeshadow, eyebrow, hair dye marker, teak, lip liner, lip gloss, concealer, nail polish remover, nail care, skin care, whitening, makeup remover. Suitable for tooth cleaning, eyelash care, perfume pen.

  For example, it is also useful for writing instruments, and is particularly suitable for marking pens such as oil markers, board markers, line markers, paint markers, aqueous markers, medical markers, and plastic model markers.

  Furthermore, it is also useful, for example, for drug application, and is particularly suitable for application of fragrances, deodorants, insect repellents, liquid ship agents, sunscreens, sun oils, acne remedies and the like.

One form of liquid applicator One form of cross-sectional shape of liquid applicator One form of using liquid applicator One form of liquid applicator One form of liquid applicator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid applicator 2 Application | coating part 3 Outer part 4 Protrusion part 5 Coating liquid channel 6 Holder 7 Body 8 Ring-shaped groove 9 Shank part

Claims (1)

  In the cross section, in the synthetic resin liquid applicator having a plurality of protrusions inwardly from the outer part and forming a coating liquid passage between the protrusion and the outer part, the hair is implanted in the application part. Synthetic resin liquid applicator.