JP2002539040A - Perfuming device for perfuming the head space of a container - Google Patents

Abstract

A cap (1) for a container (2) housing a consumer product, comprising a device (7, 11) capable of diffusing a volatile substance inside said container, said device being formed of a cap liner element (8, 12) carrying the volatile substance and of a barrier element (10, 14) lodged between the cap liner element and the interior of the container, wherein said barrier element is formed of a membrane permeable to the vapors of the volatile substance and impermeable to the consumer product, so as to enable molecular diffusion of the volatile substance's vapors inside the closed container, so as to enable molecular diffusion of the volatile substance's vapors into the headspace above the consumer product when the container is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION The present invention relates to the field of perfumery. In particular, it relates to a cap (1) of a container (2) for holding a consumer product, comprising a device (7, 11) capable of diffusing volatile substances into the container, said device comprising a cap carrying volatile substances. A liner element (8, 12) and a barrier element (10, 14) disposed between the cap liner element and the interior of the container, wherein the barrier element blocks volatile vapors It is formed of a membrane that is permeable to volatile vapors and impermeable to consumer products so as to allow molecular diffusion into the container.

Consumer products, such as heavy duty detergents and bleaches, which can typically contain chlorine generators, can often diffuse unpleasant odors and, furthermore, are difficult to perfume It has been known. In fact, very little perfume is stable in such media. The present invention is, in particular, a liquid medium of pungent odor contained in the bottle,
That is, when the fragrance is applied to the head space of the bleach or household products containing the bleach and the bottle is opened or the contents are poured, the user smells a pleasant scent, but the fragrance and the medium are mixed. A system for preventing direct contact between the two.

[0003] Irritating media, especially products containing hypochlorite bleach (hereinafter referred to as bleach)
The difficulty of perfuming is a well-known problem in the field of household detergents. This problem,
On the one hand, the perfume can be modified on an irritant basis, on the other hand, the activity of the product, measured as available chlorine content, can also be reduced as a result of the presence of perfume components which can react with hypochlorite ions. It has a heavy aspect.

[0004] Several attempts have been published to circumvent the aforementioned disadvantages by scenting the head space above the product in the container. For example, US Pat. No. 4,858,758 describes a container with a closure allowing the release of perfume into the head space above a granular product such as a solid bleach. In this device, the perfume is contained in an adsorption reservoir located in the closure, the reservoir facing the perforated polymer coating. This surface macroscopically diffuses the fragrance material through the holes. Obviously, this design is limited to use only with solid products. Furthermore,
The manufacture of this device is complicated because perforations in the surface are required.

[0005] Recently, in EP 663883-B1, a device has been proposed which relies on a distinct fragrance emission system, while overcoming the product applicability limitations of the preceding literature. EP 66388
No. 3 describes a device impregnated with perfume and having a compressible sorbent material disposed in a closure or cap of the container. In one embodiment, the material is facing polyethylene to protect it from irritating media held within the container. This device acts in two ways: as a sealing liner in the closure and as a reservoir of perfume. When the closure is tightly closed, the physical properties of this reservoir allow a certain amount of aroma to be released by mechanical compression into the head space above the product. Despite the fact that this device is suitable for any type of product (eg liquid or dry) stored in a container, the release of this fragrance into the head space relies on a mechanical activation process. ing. In other words, this system requires an external activation process to be effective.

[0006] The present invention avoids the disadvantages of the prior art invention by providing a device that allows for effective scenting of the head space over both liquid and solid products. . Since the fragrance is effectively isolated from the irritating medium, it retains the quality of the fragrance while also preventing the decomposition of the product contained in the container. Finally, no external activation process is required for operation of the present invention.

[0007] BRIEF DESCRIPTION OF THE INVENTION By the way, without the need for mechanical activation process for causing the metering of fragrance,
It has been discovered that the head space of a liquid composition stored in a container can be scented without being limited to use with only solid products. Furthermore, the user can perceive a pleasant aroma when opening the container or pouring the contents, even if the contents have an unpleasant odor.

As mentioned above, the invention relates to a cap (1) of a container (2) for holding a consumer product, comprising a device (7, 11) capable of diffusing volatile substances into the container. Are cap liner elements (8, 1
2) and a barrier element (10, 14) disposed between the cap liner element and the interior of the container, wherein the barrier element diffuses volatile vapors into the enclosure. So that it is possible to
It is formed of a membrane that is permeable to volatile vapors and impermeable to consumer products. Volatile vapors can diffuse through this membrane, thus forming a perfumed head space over the product, such as a cosmetic or cleaning composition, contained in the enclosure. The diffusion of volatiles through the membrane into the headspace of the container is rather than being metered mechanically or released through macroscopic holes as described in the prior art. Occurs at the molecular level. When the user removes the cap from the container, the fragrance diffused over the active composition is released from the bottle and is recognized by the user. Unlike ordinary consumer products of this type, where the composition itself is perfumed, according to the invention the perfume is isolated from the product base.

As will become more apparent from the description of the detailed examples below, the device according to the invention offers several advantages. In addition to the fact that the present invention is particularly advantageous for masking malodors that can diffuse from compositions that cannot be easily perfumed when the user opens the container and pours its contents, The device can be applied to both liquid and solid products. This is because the membrane present in the diffusion element located in the cap or closure of the container is permeable to volatiles carried by the cap liner member, but has pores. Because they are not. Perfume or any other volatile substance can diffuse from its carrier through the membrane that is permeable to volatile components into the head space, but this membrane is impermeable to the liquid product so that the liquid is contained in the cap. Prevents contact with fragrances. Because the perfume is effectively isolated from the media in the container, it does not encounter stability issues such as loss of aroma quality and reduced bleach activity which is usually associated with an irritating consumer product base. This is substantially the case over time when the available chlorine levels of the bleach products, as shown in the comparative examples below, are contained in bottles with caps or closures according to the invention. Will be evident from the stability data, which shows that remains constant.

[0010] Thus, while only a handful of perfume raw materials are normally stable and can be used in chlorine bleach, the present invention allows for a wide selection of perfume substances, which are no longer of the base type Is not limited by On the other hand, the unpleasant odor of the unflavored bleach product is still counteracted by the headspace volatiles that have accumulated in the container and are released when the container is opened.

The caps according to the invention and the containers with such caps are therefore particularly suitable for consumer products, such as liquid products for the treatment of textile materials, especially those which cannot be easily perfumed, as well as all-purpose cleaning agents, bleaching etc. Especially useful for However,
Its utility is not limited to the products described above, and packaging with a removable cap according to the invention may be useful for other useful surfactant applications, such as fabric softeners or surfactant compositions or dishes. Or it can be adapted to products for cleaning various aspects of household and industrial use. The system can also be used in other applications and in traditionally flavored products, ie, hygiene, hair care or hair dye products.

Furthermore, while the present invention is particularly suitable for diffusing perfume in bottles containing typically fragranced consumer products, the cap according to the present invention has other advantages, such as volatile agents For example, they can be used to achieve diffusion of antibacterial agents, antibacterial agents, insecticides, insect repellents or other volatile agents.

According to one embodiment of the invention, an element provided in the cap and capable of diffusing volatile substances such as perfume substances is arranged inside the cap and serves as a cap liner. I have. The cap liner has a membrane in the form of a polymer film attached to the cap liner surface facing the interior of the bottle;
Combined by heating or other methods, the liner is impregnated with the desired amount of perfume oil. The liner may be formed from conventional cap liner materials that can be impregnated with one or more flavoring components. The attached film is solid, covers the entire surface of the liner and has no holes. This polymer film can diffuse the diffusion of volatiles through it on a molecular scale and into the interior of the bottle, occupying the head space above the composition in the container with volatiles, while Do not contact the contents of the container with the perfume-impregnated liner material.

In another aspect of the invention, the cap has a chamber in which the fragrance is contained. The aroma component may be, for example, in liquid form. The chamber for the fragrance contains a polymer film and a diffusion membrane, which acts as a semi-permeable barrier to diffuse fragrance volatiles into the container, but caps the liquid in the bottle. It protects against the action of the liner and the fragrance it carries.

According to the invention, the aroma component is diffused on a molecular scale from the cap liner element carrying it, through the membrane and into the head space of the bottle. Not only does this membrane require pores for diffusion, but fragrance release also does not require a mechanical activation treatment. Upon opening the jar, the user clearly recognizes the fragrance volatiles that have accumulated on the liquid or solid contents of the jar, the fragrance being noticed even after the jar has been opened for several minutes. When the cap is returned, the headspace above the liquid in the container is refilled with fragrance, since the diffusion element is active without mechanical activation until all of the perfume is consumed.

[0016] These and other embodiments of the present invention will be apparent from the drawings and the description that follows.

BRIEF DESCRIPTION OF THE DRAWINGS FIG . 1 shows a perfume-carrying element containing a liquid composition, ie, a cap liner element impregnated with perfume and a polymer diffusion film member affixed on one side of the liner. FIG. 4 is a vertical sectional view of a container showing a bottle with a removable cap according to the invention.

FIG. 2 is a vertical cross-sectional view of the removable cap of the second embodiment, wherein the element carrying the volatile substance is a chamber for containing a fragrance, wherein the fragrance is in liquid form. is there.

[0019] for a detailed description drawings invention, in FIG. 1 are described one aspect of the present invention, wherein the container is in the form of a bottle 2 has a threaded neck 3, the liquid product 4 (eg surfactants, detergents for all purposes, bleach, hair care or cosmetic base). This bottle has a removable cap 1. This cap has an internal horizontal wall 5 covering the neck 3 of the bottle. The associated sag 6 has an internal threaded shape that interfits with the bottle neck. As shown in FIG.
The sag 6 and the neck 3 have interlocking threads, but other types of interfitting may be used. The bottle, neck and cap may all be made of plastic or other materials.

A device 7 having a cap liner 8 impregnated with volatiles by applying a fragrance oil onto the liner material is also provided. This cap liner 8 is directly carried by the bottle cap. For example, this cap liner, which has a shape compatible with the inside of the cap, can be pressed into it by pressure and thus be retained by frictional forces. Other means of fixing the cap liner into the cap are also possible, for example gluing.

The material of the cap liner 8 may be a conventional cardstock, paper or any other cellulosic or polymeric material. Examples of materials used for cap liners include, but are not limited to: polyethylene, polypropylene, polystyrene, polyacrylate, polyvinyl chloride, polycarbonate and fluoropolymers and copolymers thereof. Or a blend. Other suitable materials are described, for example, in U.S. Pat. No. 4,734,274, which describes the use of perfumed polymer resins consisting mainly of polyether-ester-amides, and is thus described. The material provides a volatile emitter. Similarly, US Pat. No. 5,780,527 describes a gel element resulting from the immediate crosslinking of a functionalized liquid polymer or copolymer using a crosslinking agent in the presence of a fragrance, deodorant or sanitary base. The functionalized polymers described here are, in particular, derivatives of butadiene, isoprene and chloroprene, such as maleated polybutadiene or maleated polyisoprene. These gelled elements provide diffusion elements that may be suitable for the present invention. The contents of these patents, and more particularly those teachings relating to the polymeric materials described therein, are incorporated herein by reference. Advantageous cap liner materials are selected from the group consisting of cellulosic materials. The cap liner material can carry the fragrance in a manner that absorbs or adsorbs the fragrance oil, and in addition, it is chemically and physically stable in the presence of the fragrance oil.

The described material can be impregnated with a volatile substance in a desired amount, and the volatile substance is eventually introduced into the head space 9 above the product contained in the container 2 from outside by the user. It is clear that there is no limitation on the material that can be used for the cap liner 8 as long as it can be released without the activation treatment of the cap liner.

As shown in FIG. 1, the cap liner 8 has been combined with a polymer diffusion film or membrane 10 which is the surface of the cap liner facing the interior of the bottle, ie, the cap. Covers the surface that is not in contact and protects it from splashing of bleach or surfactant products contained in the bottle. Thus, the polymer membrane provides for molecular diffusion of organic fragrance molecules from the cap liner material through the film to form a head space for the unfilled portion of the bottle. Thus, the membrane is molecular permeable to volatile components, but impermeable to liquids. Non-limiting examples of films that can potentially be used with this technology are polyethylene, polypropylene, polystyrene, polyacrylates, polyvinyl chloride, polycarbonate and fluoropolymers and copolymers or blends thereof. The membrane material can advantageously be selected from the group consisting of polyethylene or polyethylene / ethyl acrylate copolymer. The film is chemically and physically stable to both the perfume and the substances contained in the bottle.

In FIG. 2, elements having the same numbers as in FIG. 1 are the same. FIG. 2 shows a fragrance component carrying element 1 arranged in a removable cap 1.
1 illustrates another embodiment of the invention in which 1 is in the form of a chamber having a wall attached to or in contact with the inner surface of the cap. The chamber is suitably shaped to fit into the cap and can be adapted to the shape of the cap. Its shape limits the housing or chamber to have a specific volume to contain the fragrance. The uppermost wall 12 of the device 11 can be attached or contacted with the inner wall of the cap by using glue, glue or other means. This chamber contains a fragrance oil 13 which may be liquid or solid. In this embodiment, the wall of the housing facing the interior of the container when the cap is rolled onto the bottle has or is formed by a semi-permeable membrane or film 14. The membrane is affixed on the surface of the chamber facing the interior of the jar to retain the active ingredient in the chamber while allowing its diffusion into the interior of the jar. At the same time, this membrane protects the active ingredient from splashing of the product contained in the bottle.

As regards the volatile substances which are the active substances preferred according to the invention, they are selected from perfume ingredients or compositions commonly used in the literature for imparting, enhancing or modifying the odor properties of the consumables. You. Expert perfumers know, empirically, that the properties of such compounds or compositions vary as a function of the desired odor effect and, therefore, define here all possible active substances. Is impossible.
These perfuming ingredients belong to various chemical classes, such as alcohols, aldehydes, ketones, esters, ethers, acetates, nitriles, terpene hydrocarbons or heterocyclic nitrogen- or sulfur-containing compounds and natural or synthetic essential oils. . Many of these components are described in references such as S. Arctander, "Perfume and Flavor Chemica
ls ", Montclair, NJ (1969) or more recent editions or other similar literature.

The concentration of perfume used can vary over a wide range of values. Typically,
For conventional US gallon bottles, the amount of fragrance required to impregnate the cap liner is 0.001-10 g, more preferably 0.01-1.0 g, and most preferably 0-10 fragrance. 0.05-0.5 g. This level provides a very strong aroma from the head space above the product. When the bottle is removed from the cap, the aroma in the bottle remains strong for at least 5 minutes, and upon recapping, the device quickly refills the space on the product 4 and repeatedly provides the same effect.

In the embodiment as shown in FIG. 2, the amount of perfume that can be used obviously depends on the dimensions of the housing, the latter also being a function of the dimensions of the cap. Thus, those skilled in the art can adjust the amount of perfume as a function of these parameters.

The invention is explained in more detail by means of the following examples, in which the abbreviations have a general meaning in the literature and the temperatures are given in degrees Celsius.

EXAMPLE 1 A circular piece of conventional cardstock 3.5 cm in diameter and 1 mm thick was cut out. A circular section having the same diameter was cut from a polyethylene / ethyl acrylate (15%) copolymer sheet. This film is then used to remove one of the cardstock pieces.
The surface was attached by heating using an ordinary household iron, and the assembly was then allowed to cool to room temperature. The other side of the cardstock is then re-coated with the next 0.1 g fragrance base by pipetting the aromatic oil onto the cardstock.
For impregnation.

The fragrance composition 1 to be precipitated on the cardstock was prepared by mixing the following components: Composition I component parts by weight aldehyde C 10 5 aldehyde C 9 2 allyl amyl glycolate 10 allyl caproate 7 allylcyclohexylpropionate 10 citral pure 100 citral tar ¹⁾ 2 lemon essential oil 297 orange terpenes 10 α-damascon 2 dihydromyrcenol ²⁾ 250 geranyl nitrile ³⁾ 120 linalool 150 methyl nonyl acetaldehyde 5 hedeion ^{(R) 4)} 20 Zest bar ⁵⁾ 10 total 1000 1) 1,1-diethoxy-3,7-dimethyl-2,6-octadiene 2) Source: International Flavors & Fragrances Inc., USA 3) 3,7-dimethyl-2,6-octa Triennitrile Source: Firmenich SA, Geneva, Switzerland 4) methyl dihydrojasmonate; origin: Firmenich SA, Geneva, Switzerland 5) 2,4- dimethyl-3-cyclohexene-1-carbaldehyde; origin: Firmenich SA, Geneva, Switzerland.

An element made by pipetting this composition onto cardstock was placed in a 3.7 cm diameter cap by simple pressing. The cap was spun onto a corresponding half-gallon bottle filled with bleach product to normal volume. After about one hour, the head space above the bleach contained in the bottle was scented. Therefore, when the bottle was opened, the user could smell the pleasant lemon odor coming out of the bottle. This procedure was repeated with half-gallon bottles filled with varying levels of bleach product.

EXAMPLE 2 A conventional cardstock and polymer film assembly, similar to the assembly described in Example 1, was impregnated with the following scented base: Composition II component parts by weight benzyl dimethylcarbinol acetate 120 coumarin Reference Signs List 20 damacenone 4 ethyl amyl ketone 8 eucalyptol 40 eugenol 80 lavandin oil 80 linalool 160 methylhexyl ketone 8 10% methyl-p-cresol ^* 4 deion ^{(R) 1)} 40 phenylethyl alcohol 398 rose oxide 8 styryl acetate 120 terpineol 60 terpineol Terpinyl acetate 270 Undecabertol ²⁾ 8 Bellow tone 4 Zest bar ³⁾ 8 Total 1400 * In dipropylene glycol 1) Methyl dihydrojasmonate; Source: Firm enich SA, Geneva, Switzerland 2) 4-Methyl-3-decene-5-ol; Source: Givaudan-Roure SA, Vernier, Switzerland 3) 2,4-Dimethyl-3-cyclohexene-1-carbaldehyde; Source: Firmenich SA, Geneva, Switzerland Then the combined and impregnated element with the membrane was placed in the cap as in Example 1. After about one hour, the head space above the bleach contained in the bottle had diffused the lavender's pleasant aroma.

Comparative Example A titration of the available chlorine in a classic unflavored bleach composition was carried out in three different containers with caps. The first jar is normal packing,
The second and third jars were provided with caps according to the invention having perfume-carrying elements assembled with a semipermeable membrane inside the container. The caps of the second and third bottles were each impregnated with different scented bases as described in Examples 1 and 2.

Table 1 shows the percentage of effective chlorine reduction of the bleach caused by the present invention in the standard stability tests performed in the second bottle (composition I) and the third bottle (composition II), respectively. (%)
, I.e., the measurement of the percentage reduction of excess available chlorine relative to the reduction in the first bottle without the cap according to the invention. The available chlorine concentration was determined by titration at 3 ° C. and 40 ° C. after 2 and 4 weeks and in fully-filled and 1 / 3-filled bottles.

[0035]

[Table 1]

Table 1 shows that the available chlorine reduction in bleach contained in bottles with the caps of the present invention is at most 8. compared to that in conventional unflavored bleach containers.
This indicates that it was 8% higher. This value is within the experimental error of the titration method. Thus, for all practical purposes, there was no additional chlorine reduction in the container according to the invention as compared to the reduction occurring in the unscented bleach. When dissolved in bleach at a concentration of 0.02% using conventional dissolution methods for comparative purposes, the same fragrance component, after two weeks, was measured in an unscented sample. An available chlorine reduction of more than 18-44% occurred. This reduction was 16-39% greater than the value caused by the present invention.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of a container having a removable cap according to the invention with a liquid composition and with an element carrying a perfume.

FIG. 2 is a vertical sectional view showing the removable cap of the second embodiment.

[Explanation of symbols]

1 cap, 2 bottles, 3 screw threads, 5 internal horizontal wall, 6 droop
, 7 device, 8 cap liner element, 9 head space, 10
Barrier element, 11 device, 12 cap liner element,
13 volatile substances, 14 barrier element

Claims (11)

[Claims] 1. A device capable of diffusing a volatile substance into a container.
In a cap (1) of a container (2) containing a consumer product comprising 11), the device comprises a cap liner element (8, 1) carrying volatile substances.
2) and a barrier element (10, 14) arranged between the cap liner element and the interior of the container, wherein the barrier element molecularly diffuses the volatile vapor into the enclosure. A cap for the container containing the consumer product, which comprises being formed of a membrane which is permeable to volatile vapors and impermeable to the consumer product. 2. The cap liner element (8, 12) according to claim 1, wherein said cap liner element (8, 12) comprises a cellulosic material, polyethylene, polypropylene, polystyrene, polyacrylate,
The cap of claim 1, wherein the cap is formed from a material selected from the group consisting of polyvinyl chloride, polycarbonate, fluoropolymer, and copolymers or blends or mixtures thereof. 3. The cap according to claim 1, wherein the cap liner element (8, 12) is a chamber housing (12) containing a liquid volatile substance (13). 4. The cap according to claim 1, wherein the volatile substance is a scent component or a composition. 5. The membrane (10, 14) is a polymer film selected from the group of materials consisting of polyethylene, polypropylene, polystyrene, polyacrylate, polyvinyl chloride, polycarbonate, fluoropolymer and copolymers or blends or mixtures thereof. The cap according to claim 1, wherein: 6. The membrane (10, 14) is a polymer film selected from the group consisting of polyethylene, polypropylene, polystyrene, polyacrylate, polyvinyl chloride, polycarbonate, fluoropolymer and copolymers or blends or mixtures thereof. The cap according to claim 2, wherein the cap is provided. 7. The membrane (10, 14) is a polymer film selected from the group of materials consisting of polyethylene, polypropylene, polystyrene, polyacrylate, polyvinyl chloride, polycarbonate, fluoropolymer and copolymers or blends or mixtures thereof. 4. The cap of claim 3, wherein the cap is provided. 8. Container (1) having a removable cap (2) according to claim 1. 9. The container according to claim 8, which contains a bleach, a surfactant, a cleaning agent for all purposes, a hair care product or a cosmetic product. 10. A consumer product packaged in the container of claim 9. 11. A method of perfuming the interior (9) of a container (1) containing a body care or home care product, wherein volatile substances are placed on a cap liner member of an element disposed in a cap of said container. Carried on the interior (9) of the container (1) containing the body care or home care product, the element also comprising a barrier member capable of diffusing the volatiles into the interior of the container. How to perfume.