JP4749778B2 - Cosmetic applicator - Google Patents

Description

  The present invention relates to an applicator, and more particularly to an applicator in which a brush hair is formed of a soft material such as an elastomer.

The use of elastomers for brush hairs of cosmetic applicators such as mascara has been conventionally known (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3).
JP-A-6-22815 JP 2001-61546 A JP 2002-306239 A

However, each of the conventional applicators described in each of the above-mentioned patent documents forms the bristles and the applicator basket to which the brush bristles are attached separately, and attaches the bristles to the core material provided at the tip of the applicator. I was doing.
For this reason, there are problems that the number of complicated processes increases and the production cost is high.

  An object of the present invention is to solve the above-mentioned problems, using a soft material such as an elastomer for the brush bristles, and integrally forming with a coating wrinkle, and linearly applying a rigidity to the shaft at the tip of the coating wrinkle It aims at providing the cosmetic applicator provided with the member.

In order to solve the above-mentioned problems, the present invention is a synthetic resin applicator comprising a container body and a cap with an applicator attached as an applicator, wherein the applicator includes an applicator basket and the applicator cup. Molded with an application member body consisting of a shaft reinforced by four longitudinally formed ribs that are connected to the tip and projecting in a cross shape, and a soft material that is integrally attached to the shaft by injection molding The application member is formed in a straight line , and the rib portion of the shaft extends over the entire length of the brush portion .

  As a method of forming the applicator, the main part of the applicator member having a shaft with a rib attached to the tip is inserted into the injection mold, and a soft material is injected into the mold to mold the brush part. A configuration is adopted in which the members are formed in a straight line.

  Since the application member body, which is reinforced by a rib at the tip and has a shaft with a certain rigidity, is inserted into the mold, and the brush part attached to the shaft is injection-molded using a soft material as the material, It was a linear application member, and the brush part could be flexibly brought into contact with the application part.

Next, an embodiment in which the applicator of the present invention is applied to a mascara applicator will be described with reference to the drawings.
In FIG. 1, A is a container main body, B is an ironing plug, C is a cap, and D is an application member attached to the cap C.

  The container main body A includes a mouth part 1 and a shoulder part 2, and a body part 3 and a bottom part. A screw 4 is screwed into the mouth part 1, and mascara and other cosmetics are accommodated therein.

The ironing plug B includes a cylindrical body 6 having a flange 5 protruding from the upper end.
The cylindrical body 6 is provided with a wiper 7 that protrudes obliquely downward inward from the intermediate portion thereof. The cylindrical body 6 is engaged with the lower surface of the shoulder portion 2 below the outer periphery of the cylindrical body 6 to raise the ironing plug B. The bulging part 8 which blocks is projected.
The ironing inner stopper B is attached by inserting the cylindrical body 6 into the inner periphery of the mouth portion 1 of the container main body A, but the ironing inner stopper B and the container main body A may be integrally formed. .

The cap C includes a top wall 10 and a side peripheral wall 11. A fitting portion 12 for fitting the application member D is provided on the inner surface of the lower portion of the side peripheral wall 11, and a concave groove 13 is provided in the middle. It has been.
The lower part of the fitting part 12 is enlarged in diameter to form a screwing part 15 provided with a screw 14 screwed with the screw 4 of the container body A.

As shown in FIGS. 1 and 2, the application member D is attached to the application member main body D1 including the fitting tube portion 20, the application rod 22 provided with the shaft 21 at the tip, and the shaft 21 of the application member main body D1. It consists of a brush part D2 molded from a soft material such as an elastomer to be worn.
The application member body D1 is formed using polyacetal (POM), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polycarbonate (PC), or the like as a raw material resin.

The fitting cylinder part 20 is composed of a side peripheral wall 23 whose outer periphery is inserted into the inner periphery of the fitting part 12 of the cap C, and a bottom wall 24 from which a coating rod 22 is suspended from the center part.
A bulging ring 25 that engages with the concave groove 13 of the cap C protrudes from the lower portion of the side peripheral wall 23, and the lower peripheral edge of the bottom wall 24 is the upper surface of the flange 5 of the ironing plug B when the container is opened. It comes to contact with.

Above the applicator 22, the lower surface engages with the upper surface of the wiper 7 of the ironing plug B when the container is closed, and a bulging portion 26 having an enlarged diameter for closing the inside of the container, and the bulging portion 26. A diameter-reduced diameter portion 27 that engages with the inner tip of the wiper 7 is provided at the lower portion of the wiper 7, and a shaft 21 that attaches the brush portion D <b> 2 is suspended from the lower end of the application basket 22.
The shaft 21 is provided with ribs 28 in the vertical direction, and is given a certain rigidity.

  In FIG. 2, the ribs 28 are formed by the four ribs 28 projecting in a cross shape from the shaft 21, but may be a single rib, or may be partially or intermittent even if the total length of the shaft 21 is not considered. As long as the shaft 21 is reinforced and has a certain rigidity, it is not limited to the embodiment.

  The brush portion D2 is made of a soft material such as an elastomer, and has a brush base 30 attached so as to wrap the shaft 21 of the application member body D1 by injection molding, and a diameter projecting radially from the outer periphery of the brush base 30. The brush bristles 31 have a circular cross section of about 0.15 to 0.3 mm.

Next, the method for forming the applicator of the present invention and the effects of the applicator will be described.
Since the container main body A, the ironing plug B, and the cap C are formed by a conventionally known resin material and method, description thereof is omitted, and in particular, a method for forming the application member D will be described.
The application member main body D1 is injection-molded using a synthetic resin as a raw material, and as shown in FIG. 3, the elastomer inserted by the other side into the injection mold provided with the gate G and heated and melted is injected from the gate G and the brush portion. D2 is molded.

  The molded application member D is deformed by the pressing force applied to the shaft 21 during the injection of the elastomer, because the rib 21 is attached to the shaft 21 of the inserted application member body D1. The linear application member D can be obtained without being curved.

When applying cosmetics, the brush hairs 31 are easily curved, so that the desired application part can be flexibly brought into contact.
Therefore, even if the application member is linear, the same effect as when the brush portion D1 is bent can be obtained. Therefore, the application member can be effectively used as a mascara applicator, and linear rigidity can be obtained. As a cosmetic applicator, it can be used for application of eyebrows, eye shadows, and hair dyes.

  In the present invention, since the shaft at the tip of the application member body has a certain rigidity and the soft brush part is integrated by injection molding, a linear application member can be obtained, and mascara and other cosmetics can be applied. As a tool, it has become widely available.

It is a partial cross section elevation of this invention applicator. It is explanatory drawing of the brush part of an application | coating member, (a) is a cross-sectional elevation view, (b) is a cross-sectional view in the AA line of Fig. (A). It is explanatory drawing when an application member main body is inserted at the time of injection molding of a brush part.

Explanation of symbols

A container main body B ironing plug C cap D coating member D1 coating member main body D2 brush part G gate 1 mouth part 3 trunk part 4, 14 screw 5 flange 6 cylindrical body 7 wiper 10 top wall 11, 23 side peripheral wall 12 fitting part 20 Fitting cylinder part 21 Shaft 22 Coating rod 24 Bottom wall
28 Rib 30 Brush base 31 Brush hair

Claims (2)

An applicator made of synthetic resin comprising a container body and a cap with an applicator attached thereto,
An application member is integrally formed with an application member, an application member main body comprising a shaft reinforced by four longitudinally formed ribs that are connected to the tip of the application rod and project in a cross shape, and the shaft by injection molding. comprising a brush portion which is formed by softwood quality of the material is attached to,
An applicator characterized in that the applicator member is formed in a straight line and the rib portion of the shaft extends over the entire length of the brush portion .
Insert the application member body with a shaft with a rib at the tip into the injection mold,
2. The method of forming an applicator according to claim 1, wherein a soft material is injected into the mold to form a brush portion, and the applicator member is formed linearly.

Images