EP0900598B1 - Use of a package for dispensing a fluid cosmetic material - Google Patents

Abstract

Dispenser has a pump action produced by pressing the top of the container which compresses a bellow section (5) to force the product out of a dispensing nozzle (8). Piston (2) in the bottom of the container is drawn upwards during the release stroke of the pump. Cosmetic product contains microcapsules with a diameter of 0.1 to 4 mm, which are ruptured by the pump action through the nozzle to release the contents for application.

Description

The invention relates to the use of a packaging in the form of a cylindrical or oval delivery device, in particular made of a transparent or translucent plastic material is there for a cosmetic product that is in a transparent, translucent or opaque base contains visible microparticles that break up the levy and distribute itself homogeneously in the base.

Cosmetic products that contain visible microparticles in a base Application are destroyed by the pressure exerted thereby and their contents release have been known for a long time.

For example, EP 590 538 B1 describes a clear, after application on the Hair remaining composition to care for the same, in a transparent Gel base contains microcapsules in which a hair conditioning material is encapsulated and which break open when applied to the hair and the conditioning agent release. The disadvantage here is that there is no uniform distribution and Capsule wall residues remain in the hair.

FR-A-2 660 212 describes a delivery pump for a microcapsule-containing agent, the microcapsules being broken up and destroyed by the action of the spiral return spring and a capsule-destroying pigment.

DE 295 06 682 U1 discloses a plastic dispensing pump for dispensing paste-like substances from a bottle, can or tube-like paste container with a resilient Bellows as a pump organ that connects between one dimensionally stable, upper housing part and a lower one coaxial, also dimensionally stable, with the paste container connected or connectable housing part is arranged, known, the upper housing part in the lower housing part is guided telescopically and an upper cylindrical wall section of the bellows sealing against an im upper housing part rests against the fixed ring wall, inside which is a paste channel and a lower one End portion of the bellows sealing against an annular collar radial partition of the lower housing part abuts, wherein also in the upper, a closable outlet opening having housing part, a second hollow body is used, the one with the upper housing part in the immediate The area around the outlet opening, with the paste channel in Connected paste storage space in which one of the Resilient membrane wall opposite outlet opening is arranged, which is at an acute angle to the housing axis cutting axis of the outlet opening coaxial, plug-like Has locking member, and in which the lower housing part with is provided with an intake valve. The use of this dispensing pump relates generally to pasty substances, a particular advantage being stated that the drying of the substances by the membrane is prevented.

The invention is therefore based on the task, visible microparticles, the average particle diameter is about 0.1 to 4 mm, containing cosmetic Means, especially hair care products, to create when dispensing the product no residues on the substrate, i.e. to the hair or skin, but are completely and evenly distributed in the base.

This object is achieved according to the invention solved by the features of claim 1.

When dispensing the agent by pressure on the closure head, passed on by the elastic bellows, the piston moves upwards and pushes the flowable product through the valve into the delivery tube and finally over the membrane Dispensing opening to the outside, the microparticles contained in the flowable product destroyed and their content is fully integrated into the rest of the product.

The in particular cylindrical or oval packaging body preferably consists of transparent or translucent material, e.g. Polyethylene, polypropylene or polyacetal, see above that the microparticles can be perceived by the consumer.

The microparticles are not just microcapsules; it can too Wax particles and other particles, preferably those containing an active material, be used.

Also microcapsules that do not have the classic composition of shell (capsule wall) and Have content, but have a consistently homogeneous composition be used.

The microencapsulation of various substances is general specialist knowledge and also with P. Deasy, Manuf. Chemist, vol. 54 / no. 7 (1984), p. 47, in the monographs by M. Gutcho, Capsule Technology and Microencapsulation (1972) and J.R. Nixon, microencapsulation, Vol. 3 of Drugs & Pharmaceutical Science (Marcel Dekker, Inc.) as well as in soap-oil-fat waxes, Vol 106 (1980), pp. 271-272 and Vol. 114 (1989), pp. 94-95, and in the cited therein Described literature to which reference is made.

Such compositions are known per se, in addition to EP 590 538, already mentioned Bl is, for example, to US-A 4 126 174, US-A 5 082 661, and EP-A 261 754 and referred to DE-C 1 268 316.

The flowable cosmetic agents to be dispensed according to the invention are preferably around hair care products, in particular transparent or translucent gels such as Hair washing and rinsing agents, hair treatments, conditioners, so-called leave-on products the application remains on the hair, anti-grease and anti-dandruff preparations, etc.

Their compositions are known from the prior art, for example from Monograph by K. Schrader, basics and formulations of cosmetics, 2nd ed. (1989, Hüthig Buch Verlag), pp. 676-771. It is therefore based on a detailed list of all possible components waived.

As already stated, transparent or translucent gels are preferred. These usually contain about 0.1 to 2.5, in particular about, in an aqueous basis 0.25 to 1.5% by weight of a thickening and suspending aid, for example Hydroxyalkyl celluloses such as hydroxyethyl cellulose or hydroxypropyl methyl cellulose, guar Gurn, xanthan gum, polyvinyl pyrrolidone and polyacrylic acid salts.

The viscosity of this base is, for example, between approximately 1000 and approximately 100,000, in particular 2500 to 75000, preferably 5000 to 50,000 mPa.s at 20 ° C, measured in Brookfield viscometer (spindle no. 5) at rpm.

The viscosity of shampoos is of course lower than for leave-on products; the person skilled in the art knows the appropriate values and their setting for the respective product type.
The microparticles can consist entirely or partially of active ingredients.

In hair care products, hair conditioning substances are preferred Consider, for example, waxes with a melting point of less than 70 ° C, preferably less than 50 ° C.

When it comes to real microcapsules, i.e. Microparticles made up of a shell and one inside included conditioning material that is released when the wall material is destroyed, acts, practically all conditioning agents can be used.

Such are, for example, synthetic and natural fats and oils as well as fatty alcohols and Fatty acid esters.

Suitable fats and oils, including waxes, are especially natural vegetable oils such as avocado oil, coconut oil, palm oil, sesame oil, peanut oil, sperm oil, Sunflower oil, almond oil, peach seed oil, wheat germ oil, macadamia nut oil, evening primrose oil, Jojoba oil, castor oil or also olive or soybean oil, lanolin and its derivatives, as well Mineral oils such as paraffin oil and petroleum jelly.

Synthetic oils and waxes are especially silicone oils, such as the well-known polysiloxanes, polyethylene glycols, etc.
Natural waxes are, for example, low-melting paraffin waxes, orange wax, apple wax, etc.
Other suitable conditioning components are fatty alcohols, preferably those with about 8 to 22 carbon atoms in the molecule, such as myristyl, cetyl, stearyl alcohol, wax alcohols and fatty acid esters such as isopropyl myristate, palmitate, stearate and isostearate, oleyl oleate, isocetyl stearate, hexyl laurate, dibutyl adate, dibutyl adate, dibutyl adate, dibutyl adate , Myristyl myristate, olerlerucate, polyethylene glycol and polyglyceryl fatty acid esters such as PEG-7-glycery-lococoate, cetyl palmitate, etc.
Of course, synthetic and natural polymeric conditioning substances can also be used as or in the microparticles.
These are known and therefore do not require any further listing.
As already stated at the beginning, the microencapsulation of such substances is known per se and therefore does not require any further explanation.
For this purpose, reference is made, for example, to the explanations in EP 590 538 B1 already mentioned.
The preferred average particle diameter of the microparticles is between approximately 0.5 and 2.5 mm, in particular 0.75 to 2 mm.
They are preferably in a color contrast to the aqueous base, so that they are visible to the user in the packaging and have a visual appeal.

If it is in the flowable packaged or to be dispensed according to the invention Composition is a skin care product, this is preferably one optionally transparent or translucent oil-in-water or water-in-oil emulsion, however, the use of a gel-like base, for example in the form of a Microemulsion, possible.

Corresponding skin care products are for example from Schrader, I.C., pp. 387-538 and 583-592 described.

Further exemplary flowable cosmetic agents are shaving creams, toothpastes, in particular transparent gel-shaped toothpastes with encapsulated active ingredients, Face masks, body deodorants and antiperspirants, etc.

The following exemplary embodiments illustrate the invention.

example 1

A gel-shaped, transparent hair treatment composition of the following composition Polyacrylic acid (Carbopol ^R 2050) 0.8 (% by weight) Sodium hydroxide 0.3 Polyvinyl pyrrolidone 2.0 Perfume 0.3 Dimethicone copolyol 3.0 1,3-propylene glycol 3.0 Nonionic emulsifier 0.3 Preservative qs Microcapsules (containing almond oil, 0.04% red coloring; middle Particle diameter ~ 1.2 mm) 2.5 water ad 100.0 was placed in a cylindrical container made of transparent polyethylene according to FIG. 1.

Upon delivery, a pale pink product was removed that no longer contains microparticles contained, obtained, which could be distributed without residue on human hair.

The packaging container according to FIG. 1 is characterized by the principle described below:
The cylindrical or oval container (1) is closed at its lower end by an upwardly movable piston (2).
At its upper end, the container (1) has a closure head (3) which is connected to the container (1) by a valve (4).
The valve (4) leads via an elastic bellows (5), which is located in the closure head (3), into a delivery tube (6) in the inner head part (7), which opens into a delivery opening (8) provided with a membrane.
The packaging is expediently provided with a cover cap (9).

When the closure head is pressed down, this becomes in the interior of the cylindrical container located product by the upward movement of the piston, caused by the elastic Bellows, over the valve and the discharge pipe through the membrane Dispensing opening pressed, the microcapsules are completely destroyed and their contents is distributed homogeneously in the product.

Example 2 Translucent conditioning hair gel.

Sodium alginate 0.25 (% by weight) Karayagum 1.75 Polyethylene glycol 4.00 Glycerin 1.00 Ethanol 5.00 Preservative, perfume q.s. Paraffin wax particles (melting point: ~ 50 ° C, containing 0.05% blue dye; average particle diameter: ~ 1.5 mm) 3.00 water ad 100.0

When delivering the product from a translucent polypropylene packaging accordingly Figure 1 was a slightly blue colored styling product no longer containing individual particles receive.

Claims (2)

1. Use of a packaging for dispensing a fluid cosmetic composition, whereby the packaging is equipped with a piston (2) which moves upwards, and an actuator (3) connected to the container body (1) by an elastic, compressible bellow (5), at its lower end connected to a valve (4), and at its upper end discharging into a dispensing tube (6), which opens into an outlet equipped with a membrane (8), characterized in that the composition contains in an aqueous, transparent, translucent or opaque carrier visible microparticles of an average diameter from 0,1 to 4 mm, whereby during dispensing of the composition by exerting pressure on the actuator (3) the composition is passed on through the valve (4) into the dispensing tube (6), and finally pressed out through the outlet fitted with the membrane (8), whereby the microparticles are destroyed and their contents is distributed homogenously in the carrier.
2. Use of a packaging according to claim 1, the body of which consists of a transparent or translucent plastic material.

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