KR920000302B1 - Dispensing container - Google Patents

Abstract

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Description

Liquid applicator

1 is a side view of a liquid applicator in which the cap is shown in a partial cross section and the applicator head, the diaphragm spring and a portion of the liquid container are shown in cross section.

2 is a side view of an applicator showing a portion of a liquid container and a cap in cross section.

3 is a bottom view of a liquid container.

4 shows the liquid container of FIG. 2 upside down to show liquid flow.

5, 6 and 7 are plan, cross-sectional and bottom views, respectively, of the diaphragm spring.

8, 9 and 10 degrees are plan views, partial cross-sectional side views and bottom views of an impervious sleeve, respectively.

11, 12 and 13 are top, partial cross-sectional side and bottom views of an impermeable sleeve and diaphragm spring in one piece in accordance with another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10 container 14 cap

17: impermeable sleeve 20: applicator head

35: diaphragm spring 52: spring portion

53: sleeve portion 59: absorbent member

The present invention relates to a liquid applicator for applying cosmetics to the skin, and more particularly to a liquid applicator used for applying antiperspirant and deodorant to the human armpits.

Liquid applicators are generally well known in the art and are particularly well known in the roll-on type for antiperspirants and deodorants. These are disclosed, for example, in US Pat. Nos. 2,749,566, 2,923,957 and 2,998,616. Because of the problems with roll-on type applicators, US Pat. Nos. 4,050,826 and 4,111,567 are inflexible, non-deformable, sintered porous synthetic plastics with controlled porosity and ommi-directional interconnected pores. A liquid applicator has been devised which includes a container in which a fixed type head made of resin is fitted. Liquid spill problems associated with the conventional roll-on type also exist in this type of head, creating a liquid collection passage adjacent to the applicator head so that the spilled liquid is discharged through the passageway and into the liquid reservoir through the opening in the head. Solved by This avoids the accumulation of liquid on the applicator head surface and prevents solidification of the discharged liquid.

In practical terms, the applicators of US Pat. Nos. 4,050,826 and 4,111,567 are similar to conventional roll-on applicators except that their heads are fixed and have drainage passages. The liquid released must be in contact with the applicator head so that the liquid can be delivered to the surface by capillary action. Since there is always an empty space between the liquid in the liquid container and the applicator head, it is necessary to invert the container as in the roll-on type head. Thus, the liquid in the container need not always be in contact with the applicator head.

In the present invention, the applicator head may be of any suitable shape, but preferably has a convex outer surface to be particularly suitable for contacting various parts of the body. Thus, the applicator head may have a hemispherical outer surface.

The material used to make the applicator head is an inflexible, unmodified and sintered porous synthetic resin formed from a collection of polymer particles and having controlled porosity and interconnected pores in all directions. The porosity of the porous material can be controlled during manufacture, thus allowing a wide range of porosities to be suitable for a wide range of liquid products with multiple viscosities. The sintered porous applicator head can be made of high density polyethylene, low density polyethylene, ultra high molecular weight polyethylene, polypropylene, polyvinylidene fluoride and the like. For example, products commercially available under the trademarks "Porex" porous plastics and "Porous Polv" can be used. The pore size of the applicator head can vary widely depending on the liquid to be released. Low viscosity liquids, such as perfumes, can best be released in small pore plastic applicator heads having, for example, pore sizes of 1 micron or less. Generally the pore size varies from about 1-200 microns, and in most cases about 10-50 microns is generally preferred.

The porous applicator head is hollow and coupled to a cylindrical impermeable sleeve, which sleeve fits into an annular plastic diaphragm spring. In addition, the diaphragm spring is fitted in the upper opening of the container forming a reservoir of liquid material to be applied. The water impermeable sleeve and the diaphragm spring may also be formed as a single piece. Impervious sleeves play two roles. One is to insert the porous plastic applicator head into the diaphragm spring, and the second is to direct the liquid flow to the top of the porous applicator head, which is the main part used. The container may only be filled with a liquid and may also contain an absorbent material, in which liquid to be released is absorbed, which is in direct intimate contact with the porous applicator head. By this aspect of the present invention, the liquid is brought into continuous contact with the applicator head so that the liquid is easily released by capillary flow if necessary. The absorbent material used in the container may be any material capable of absorbing the liquid to be released, for example cellulose acetate, polyester, cotton, rayon, nylon or other suitable material, which may be capillary flow if necessary. By means of which liquid can be continuously discharged. The absorbent material may be in any suitable shape or form. In one embodiment, the absorbent material is the same non-deformable, flexible, sintered porous resin material as the material of the applicator head. The shape of the applicator may vary, but particularly advantageous applicators have a container containing the contents to be released and a cylindrical porous plastic tube extending down to the bottom of the container and having a hemispherical top surface which is integral to the container. It consists of. The diameter of the cylindrical member need not be uniform, for example the portion extending into the container is smaller in diameter than the portion extending out of the container to fit into the diaphragm spring of the annular plastic.

The container may be made of any suitable material such as metal, glass or plastic.

The applicator of the present invention can be used to apply topical liquids to the skin. Such liquids include, for example, post-shave lotions, pre-shave lotions, skin lubricating or softening agents, suntan lotions, perfumes (perfume, chelon cosmetics, etc.), topical treatments (painkillers, acne treatments, preservatives, etc.), and rouges on the lips and face. Included. This applicator is particularly useful for applying antiperspirants and deodorants and has no problems with those of the roll-on type. Accordingly, the present invention provides a means for applying a low viscosity, rapidly drying, non-stick, aluminum chloride hydrate solution, eliminating undesirable problems such as roll-on, pump-spray, sticks, and the like.

Because these porous plastic materials are hydrophobic and do not “wet” with water, it may be necessary to add alcohol to the antiperspirant to deliver the liquid from the container to the applicator head. Crystallization of the solid components of the solution, such as aluminum chloride hydrate, can be prevented by adding some esters such as isopropyl myristate or isopropyl palmitate.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

In FIGS. 1 and 2, the liquid applicator of the present invention has a container 10 having a base 12 and a cap 14 which is screwed by threaded grooves 16 on top of the container 10. ) The cap 14 may be formed to frictionally engage the container. The container 10 contains a liquid 34 to be applied. The applicator head 20 made of porous plastic is attached by frictional coupling on the impermeable sleeve 17 so that no fluid leaks out. The water impermeable sleeve 17 is coupled to the diaphragm spring via a central opening 41 of the annular and elastic diaphragm spring 35 by frictional engagement or snap engagement.

As shown in FIGS. 8-10, the water impermeable sleeve 17 has annular protrusions 48 around its upper outer surface, the protrusions 48 having an inner diameter of the applicator head 20. It has a slightly larger diameter so that when the impermeable sleeve 17 is pressed into the applicator head 20, the protrusions engage the inner surface of the applicator head 20 and apply it in place on the impermeable sleeve 17. The head 20 is firmly held. At the lower end of the water impermeable sleeve 17, a flange 49 holding the water impermeable sleeve 17 with respect to the bottom edge 50 of the diaphragm spring 35 extends outward.

In FIG. 1, the left half shows the state where the diaphragm spring 35 is raised, i.e. relaxed, and the right half shows the state where the applicator head 20 is pressed and the diaphragm spring 35 is in its lowest position. It is shown. The applicator head 20 is configured to have sufficient spacing so that its bottom face 20A can fully push down the diaphragm spring 35 in the upper position. Further, the right half of FIG. 1 shows that the diaphragm spring 35 and the impermeable sleeve 17 are made of an impermeable sleeve-diaphragm spring combination 47 in one piece (see also FIGS. 11-13). This is advantageous as it can omit the assembly of these parts and can provide a good fluid tightness. As shown in FIGS. 11-13, the unitary impermeable sleeve-diaphragm spring assembly 47 comprises a spring portion 52 and an eighth which are basically similar to the diaphragm spring 35 of FIGS. It consists of a sleeve portion 53 which is basically similar to the impermeable sleeve 17 of Figs. Since the sleeve part 53 is integral with the diaphragm spring, they are made of the same plastic material. Thus, the unitary structure provides the same advantages as described above, but it may be desirable for the sleeve to be made of a different material to obtain other properties. Thus, it may sometimes be advantageous to use two separate diaphragm springs and an impermeable sleeve. The unitary impermeable sleeve-diaphragm spring combination 47 has protrusions 48 that hold the applicator head 20 on its sleeve portion 53. The spring portion 52 has an inwardly inclined surface 58 to facilitate insertion into the container 10 on the bottom of its outer cylindrical portion 54. At the base of the sleeve portion 53 there is a connecting portion 55 which connects the sleeve portion to the inner cylindrical portion 56 of the spring portion 52. This connection 55 also helps to place the applicator head 20 on the sleeve portion. In addition, a flange 57 is provided at the upper end of the outer cylindrical portion 54 of the spring portion so as to be placed on the upper end 42 (first diagram) of the container 10.

The applicator head 20 has a lower cylindrical portion 44 fitted inside the outer cylindrical portion 36 of the diaphragm spring 35. An assembly consisting of the applicator head, the diaphragm spring and the water impermeable sleeve assembled together is inserted into the container 10, wherein the outer cylindrical portion 36 of the diaphragm spring 35 has a flange 37 formed on the upper side thereof. It is placed on the top 42 of 10) to form a fluid tight friction bond. In this position, the lower cylindrical portion 44 of the applicator head 20 extends within the outer cylindrical portion 36 of the diaphragm spring 35. In this configuration, the applicator head 20 can move into the container 10 when pressure is applied to the head and the wavefront 40 of the diaphragm spring 35 deforms. The applicator head 20 may be pressed until the shoulders 22 of the head contact the flange 37 of the diaphragm spring 35 serving as a stop.

The container 10 is filled with a liquid 34 which, when inverted as shown in FIG. 4, causes the inner surface 26 of the applicator head to wet first and then through the pores of the applicator head 20. Capillary flow is delivered to the outer surface 24 of the applicator head. As shown in FIG. 4, the liquid 34 is guided by the impermeable sleeve 17 to the inner surface 26 of the applicator head 20 so that only it is wet. Thus, liquid only diffuses there, and unnecessary flow through the sidewall of the applicator head 20 is prevented. After the container is inverted and the inner surface 26 of the applicator head 20 is wetted, the container can be held up again to apply liquid to the skin, for example by applying an antiperspirant to the armpit area. The liquid 34 is applied to the skin when the outer surface 24 of the applicator head 20 is rubbed against the skin. When pressure is applied on the applicator head 20 and the head is pushed toward the container 10, the pressure in the container increases, causing the liquid 34 to come out through the pores of the applicator head 20 to replenish the capillary flow and 34 flows sufficiently to the outer surface 24 of the applicator head 20.

The applicator head 20 has its outer surface 24 slightly flat and its side 21 thicker than the top. The flat head provides a large diffusion site for diffusing liquid 34 over the skin. The liquid flowing laterally is reabsorbed by the thick side 21 of the applicator head 20. It is also advantageous to shape the applicator head with a material that makes the top of the applicator head 20 thin or to provide flexibility to the top of the applicator head 20 to give some flexibility to the top of the applicator head.

To facilitate wetting of the applicator head 20, the container 10 is filled with an absorbent material (not shown) of natural or synthetic fibers that fills the container 10 and contacts the inner surface 26 of the applicator head 20. (10) may be filled.

As shown in FIGS. 1 and 2, the cap 14 may have an absorbent member 59 fitted inside to fit the outer surface 24 of the applicator head 20. The absorbent member 59 absorbs excess liquid and vapor generated by the pressure difference between the inside and outside of the container and passes through the applicator head 20.

Various liquids can be applied by the applicator of the present invention. Examples of such liquids include the following.

[Shaven after lotion]

Example 1

[Shaven after lotion]

Example 2

[After shave lotion (high softness)]

Example 3

[After shave lotion with low alcohol and preservatives]

Example 4

[Shaving Lotion (Bead Softener and Lubricant)]

Example 5

[Shaving Challenge]

Example 6

[Tanning liquid]

Example 7

Example 8

[Shelon lotion (for men or women)]

Claims (10)

A liquid applicator comprising a container body for storing a certain amount of liquid and an opening having an opening at the top, and used to apply liquid to a body surface, the liquid applicator comprising concentric inner and outer cylindrical portions connected by an annular wave member and An annular spring member installed in the container, a sleeve member coupled to an inner cylindrical portion of the inner and outer cylindrical portions, and a hollow applicator head coupled to the sleeve member, wherein the annular spring member and sleeve A member forms a liquid hermetic seal between the applicator head and the container, wherein the applicator head is of an inflexible, non-deformable, sintered porous synthetic resin structure with controlled porosity and omnidirectional interconnects. Liquid applicator, characterized in that. The liquid applicator of claim 1, wherein an outer cylinder of the spring member is coupled to an opening of the container. The liquid applicator of claim 1 wherein said sleeve member is a separate sleeve coupled within an inner cylindrical portion of said annular spring member. 2. The liquid applicator of claim 1 wherein said sleeve member is integral with said annular spring member and extends up from an inner cylinder of said spring member. The liquid applicator of claim 1 wherein said applicator head is coupled to said sleeve member. The liquid applicator of claim 1 wherein the top edge of the inner cylinder portion of the spring member is axially lower than the top edge of the outer cylinder portion. The liquid applicator according to claim 1, wherein said wavy member has an annular wavy surface facing downward. The liquid applicator of claim 1 wherein said container contains an absorbent material for said liquid. 9. The liquid applicator of claim 8, wherein said absorbent material is a natural or synthetic fibrous material. The liquid applicator of claim 1 comprising a cap coupled to said applicator head.

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