KR102458122B1 - cosmetic items - Google Patents

Abstract

The present invention relates to a cosmetic article having a reservoir (10) comprising a 3D woven spacer fabric having a first fabric layer (11) and a second fabric layer (12) interconnected. The first layer 11 is permeable to at least the cosmetic composition (C). The first and second layers may retain at least a portion of the composition between each other, particularly when the article is used.

Description

cosmetic items

The present invention relates to cosmetics and more particularly, but not exclusively, to the field of human keratin materials, in particular cosmetic articles intended for making up or caring for the skin.

It is known to impregnate a porous structure with a cosmetic composition, and it is possible to bring a finger or an applicator into contact with the porous structure to load it with the product.

Numerous patent application publications have addressed this type of cosmetic article.

WO 2017/016608 A1 discloses an article comprising a mat of fibers composed of a nonwoven fabric covered on one side of the screen.

The problems that arise with this kind of article are such as the capacity to store large amounts of the composition and to restore it gradually and as completely as possible during use, both for a small overall size and for a manufacturing cost compatible with the requirements of a large-scale market. A compromise must be found between the ability to accommodate compositions of varying parameters and viscosities and the need to benefit from shape memory.

It is an object of the present invention to further improve cosmetic articles having a reservoir comprising a cosmetic composition.

According to a first aspect, the object of the present invention is a cosmetic article comprising a 3D woven fabric at least partially permeable to a cosmetic composition, having a thickness and having a reservoir capable of holding at least a portion of the composition within the thickness .

The reservoir according to the invention has free space for the composition due to the fact that the fabric is three-dimensional. The capacity of the reservoir for storing the composition makes it possible to have a reservoir thinner than some known reservoirs while containing an equivalent amount of the composition.

The 3D woven fabric may have a cellular structure. In a variant, the fabric is woven with some free space retained between the yarns so that the composition can fill these spaces.

The 3D woven fabric preferably comprises a first fabric layer and a second fabric layer spaced apart from each other. The first layer and the second layer are interconnected together by connecting portions preferably integrally woven with at least one of the first and second layers. The connecting portions may be woven portions and/or individual yarns.

The 3D woven fabric may be externally lined by a third layer that is permeable to the composition. The third layer may be textured.

The cosmetic composition may be selected from foundations, rouges, eye shadows, and sun protection creams. The reservoir may already contain the cosmetic composition on first use.

According to the invention, compositions that can be used are foundations, in particular liquid foundations.

Foundations according to the invention are preferably selected from gels, creams and emulsions. Preferably, the foundations are emulsions, for example type-in-water emulsions, water-in-oil emulsions, and water-in-oil-in-water emulsions.

Suitable foundations according to the present invention may comprise one or more compounds well known to those skilled in the art and commonly found in foundations. In particular, the foundations according to the invention are solvents, in particular volatile solvents, waxes and/or resins, pigments, film-forming polymers, fillers, active may include

The dry matter content of the foundations suitable according to the invention is preferably from 0.1% to 99.0% by weight, more preferably from 25.0% to 75.0% by weight, relative to the total weight of the composition.

Obviously a person skilled in the art will use his general common knowledge to adjust the dry matter content of the composition and the properties of the compounds to prepare a composition that can be used in the context of the present invention.

A further object of the present invention is such an article having a cosmetic composition comprised at least partly within the thickness of the 3D woven fabric, preferably mostly or entirely comprised within said thickness.

[3D Woven Fabric]

A 2D woven fabric is made by a conventional 2D weaving process in which two orthogonal sets of threads (warp and weft) are twisted in a 2D weaving device.

The construction of 3D woven cellular fabrics, such as those serving to fabricate reservoirs, is well known in the industry, inter alia, for reinforcing synthetic materials. Examples of such a plurality of fabrics are given in US 3102 559, US 3 207 185, US 5 673 726, US 3 943 980 and US 20090149100 A1. 3D woven fabrics according to the present invention can be made according to the teachings in these applications or patents.

The 3D woven fabric is not a knitted fabric but is obtained by twisting sets of three orthogonal yarns on a specially designed 3D weaving machine.

The 3D woven fabric may comprise a plurality of fabrics and preferably comprises a first fabric layer (which may be a top layer) and a second fabric layer (which may be a bottom layer) connected together by connecting portions. The connecting portions may preferably form woven walls (also called ribs) or pillars and may be limited to isolated yarns or bounds of yarns. The walls may form an internal cellular structure within the 3D fabric. The cellular structure may include channels having various shapes in cross-section, for example polygonal or non-polygonal, for example square, rectangular or hexagonal. A reservoir may contain more than one row of cells within its thickness.

The first layer may be flat or profiled. An example of a profiled first layer is obtained with cavities forming a honeycomb structure in a cross-sectional view.

The first and second layers may each be planar. The first and second layers may extend in parallel planes. In some embodiments, the connecting portions extend perpendicular to the first and second layers. The connecting portions may also extend at least partially at an angle to the first and second layers.

The 3D woven fabric may not include any intermediate layers between the top and bottom layers. Alternatively, the 3D woven fabric includes at least one intermediate layer spaced apart from the top and bottom layers. This intermediate layer may be connected to adjacent layers by connecting portions which may be constituted by yarns extending straight and/or angled or along loops.

The 3D woven fabric can provide a constant height or a variable height. The height may be maximum or minimum at the center of the reservoir when viewed from above.

The 3D woven fabric can provide for connecting the yarns at an angle with the layers where they are connected for better resistance to shear. These oblique connections can be combined with straight connections. The fabric connecting portions may consist of yarns extending along a loop between the first and second layers.

The first and second layers may form woven structures by connecting portions in the same device. The connecting portions may be woven integrally with the first and second woven layers.

The 3D woven fabric defines between the first and second layers interior cavities in which the composition can accumulate. These cavities may be the aforementioned cells or spaces that exist between the yarns due to the density in which they are woven.

At least one of the first and second layers is permeable to the cosmetic composition. Preferably, both the first and second layers are permeable to the cosmetic composition.

The permeability of the first and/or second fabric layer to the composition may be obtained by lowering the mesh density and/or otherwise providing or cutting openings therethrough.

By adjusting the structure, length and number of connecting parts, and the material of the yarns, it is possible to control the elastic properties of the 3D woven fabric relatively accurately and thus control its deformation under load when collecting the product. It is thus possible to easily adapt it to the composition and the properties of the keratin materials to be treated. The connecting parts ensure good properties that they deform elastically and return to their original shape as soon as the collection is finished. The connecting portions may be at least one portion oriented perpendicular to the first and second layers. In one exemplary embodiment of the present invention, the connecting portions each have an arcuate shape. This can give the reservoir more compressibility and reduce the force applied to move the first and second layers towards each other.

The present invention also allows a wide selection of materials, textures and porosity for the first layer. It is thus readily possible to tailor the first layer to the desired touch and to the properties of the composition. For example, for extremely fluid compositions, it is possible to use a fine-mesh woven fabric as the first layer that provides a strong resistance to passage of the composition. For a more viscous composition, it is possible to use a larger-mesh woven fabric that allows the product to pass through more easily.

The present invention also provides, if desired, a composition having a viscosity greater than that generally acceptable for blowing agent reservoirs, for example at least 4.5 Pa.s and 100 Pa at a shear rate of 200 s ^-1 as measured at 25°C and atmospheric pressure. s or less (using a Brookfield Rheomat RM 180 viscometer equipped with a No. 4 spindle, the measurement is performed after 10 minutes of rotation of the spindle to stabilize the rotation speed and viscosity) makes it possible to maintain a composition having a viscosity. The viscosity is of course less than 4.5 Pa.s and can for example be from 1 mPa.s (or 1 CPo) to 4.5 Pa.s at a shear rate of 200 s ^{- 1} (Brookfield Rheomat RM 180 with No. 4 spindle) Using a viscometer, measurements are taken after 10 min of rotation of the spindle to stabilize the rotational speed and viscosity).

The composition can be liquid at 25°C, ie can flow under its own weight.

The first layer can be seen as substantially continuous to the naked eye. The term “with the naked eye” is to be understood as meaning when viewed from a distance of 15 cm with the eye of ordinary sensitivity. In a variant, the first layer is visible as perforated with the naked eye.

Preferably, the first layer is less open than the second layer, particularly when defining a surface on which the product is collected by the user. The second layer may face the bottom of the housing containing the article and thus does not serve to collect the composition. The fact that the second layer is open may facilitate initially loading the reservoir with the composition when loading is effected by pushing the first layer of the composition-free article upwards into a housing filled with the composition.

The presence of openings in the second layer also reduces the amount of connecting portions joining the first and second layers, since the connecting portions start outward from the unopened areas of the second layer, thus dissolving the composition. It makes it possible to increase the free volume that can be maintained.

More than 50% by weight of the composition may be included in the reservoir at at least one given time during use of the article. Compared to the fiber mat disclosed in application WO 2017/016608 A1, it is possible to easily manufacture as many openings as desired to increase the capacity of the reservoir.

All compositions can be included in the reservoir in the first use. In other words, the user is provided with an article having a reservoir containing all of the composition to be applied. In a variant, the user loads the reservoir with the composition during the first use by pushing it into a housing that initially contains the composition. When the reservoir reaches the bottom of this housing, most, or all, of the composition is then included in the thickness of the reservoir.

In general, the largest dimension of the opening may be between 1 mm and 15 mm. The cross-sectional area of each opening may be between 1 mm 2 and 100 mm 2 . All openings are preferably of the same shape.

At least one layer has openings, preferably the second layer has openings.

The largest dimension of the openings may range from 1 mm to 15 mm. The cross-sectional area of the openings may range from 1 mm 2 to 100 mm 2 .

The thickness of the reservoir, measured between opposite sides of the first and second layers, is between 1 mm and 25 mm, more preferably between 5 mm and 15 mm. For makeup applications, a thickness of 1 to 15 mm may be preferred, and for care applications a thickness of 5 to 25 mm may be preferred.

The reservoir may have a surface occupying 1 to 80 cm 2 in plan view.

The reservoir is preferably entirely made of synthetic material, preferably thermoplastic. For example, the reservoir is made of materials such as polyester, polyamide, polyolefin, inter alia plastics. The yarns used to make the 3D woven fabric may be multifilament yarns, monofilament yarns and/or spun yarns. A 3D woven fabric can be made by woven strips of yarns.

The contour of the reservoir may be circular, but other shapes are possible, in particular polygonal shapes. Forming can be effected especially by cutting using a punch or laser, if appropriate.

In one exemplary embodiment of the present invention, the first layer is externally lined by a third layer that is porous to the composition. The presence of such a third layer is very particularly advantageous when the first layer has perforations of negligible size in that it improves the distribution of the composition over the outer surface of the reservoir, said outer surface being defined by this third layer. do.

The third layer may be textured or untextured. The third layer may be selected from woven materials and nonwovens.

According to the invention, the cosmetic composition present in the article is preferably mostly comprised between the first layer and the second layer.

The expression “contained predominantly between the first layer and the second layer” means in the article 70% to 100% by weight, advantageously 80% and 100% by weight and more advantageously 90% by weight of the cosmetic composition, relative to its total weight and 100% by weight included between the first layer and the second layer.

Preferably, the article according to the invention does not have an intermediate absorbent structure, such as a foaming agent, particularly attached between the first and second layers. More preferably, the article according to the invention has a single first layer and a single second layer. The cosmetic article according to the invention advantageously does not have any layer of blowing agent, such as for example PU, SBR or polyolefin blowing agent.

A further object of the invention according to still its aspects is a cosmetic casing, in particular for makeup, having a body in which a reservoir according to the invention is held and a cover movable relative to the body, for example hinged to the body.

The reservoir may be fully filled with the composition by the user during the first use of the casing. In a variant, the composition is contained in the body and the reservoir is individually packaged within the casing or not individually packaged within the casing. The membrane seal may close the housing comprising the composition. During the first use, the user can remove the membrane seal and fit the reservoir in the housing. By pressing the reservoir into the bottom of the housing, the user ensures that it is loaded with product.

A further subject of the invention is an assembly comprising an article according to the invention and a casing, refill or sachet.

The casing has a body holding the article and a cover to prevent access to the article, for example when it is not in use. Such a cover can close the casing with leak tightness or non-spill tightness. The article is carried, for example, by a dish and the body of the casing is configured to hold the dish. Items with dishes may form refills that may be packaged in boxes or sachets, for example.

The body of the casing is made, for example, of a thermoplastic material.

The cover of the casing may be screwed or hinged to the body. A snap-fastening or magnetic locking system may be provided to hold the casing in a closed configuration.

The casing may have a mirror and, if desired, represent a housing for holding the cosmetic applicator.

The cover may have a rectangular, oval, circular or other contour in plan view.

The article may be retained by any means in the casing and, for example, by a retaining ring attached to the body of the casing.

The casing may have an exterior surface that is decorated in a variety of ways, for example metallized, painted, screen painted, or decorated in some other way.

The refill may include an article in a form where all essential is to fit the refill in the casing so that the user can use the article to collect the composition therewith.

The refill may have an article holding a dish made of plastics material. Such a dish may have a height greater than the height of the article, or in a variant less than the height of the article.

When fitted, the dish may define the bottom of the casing on the side opposite from the cover.

The article may also be placed directly on the body of the casing without carrying a dish attached to the body of the casing.

The dish may be fastened to the body of the casing by snap-fastening, friction, or screw engagement.

When an article is included in the sachet, the article can be placed on a dish and form a refill. In a variant, the sachet comprises only the article and, if appropriate, the composition. The sachets are made of a thermoplastic material and may optionally be metallized. The sachet may be closed by heat sealing. The sachet may have a notch that constitutes the start of the tear, allowing it to be opened easily.

The sachets may include polyolefins.

The sachets may be hermetically sealed to prevent any evaporation of the volatile components of the composition.

A further subject of the invention according to still its aspects is a step of collecting a composition in a reservoir of an article according to the invention as defined above, and possibly applying it to human keratin materials, in particular to the skin, with the aid of an applicator. It is a makeup method comprising the step of applying. During collection, the user may deform the connecting portion to move the first and second layers towards each other.

Additional features and advantages of the present invention will become apparent from a reading of the following detailed description of the accompanying drawings and of their non-limiting exemplary embodiments.

1 is a cross-sectional view through an example of a casing according to the present invention,
- Figure 2 shows the reservoir itself,
- Figure 3 shows a bottom view of a variant of the reservoir,
4a to 4c show variant embodiments of reservoirs and connecting parts,
- FIG. 5 shows a variant embodiment of the reservoir with the addition of an outer layer;

The cosmetic article 1 according to the invention shown in FIG. 1 has a casing 2 having a body 3 .

The casing 2 also has a cover 5 , which is for example hinged or fastened in some other way to the body 3 , for example being screwed onto the body.

The casing 2 houses an applicator holder 6 , which is, for example, an element hinged about the same axis of rotation as the cover 5 in the casing body 3 .

The applicator 7 has, for example, a powder-puff type constituted by a foaming agent sponge.

In the example shown, the dish 4 is accommodated in the housing 8 of the body 3 of the casing. The dish 4 is accommodated in the reservoir 10 manufactured according to the present invention.

The casing (2) has an annular lip (9) reaching over the dish (4), which lip (9) has an edge that folds towards the bottom of the dish (4) to hold the reservoir (10) in place.

The reservoir 10 has a first woven fabric layer 11 and a second woven fabric layer 12 joined together by a set of connecting portions 13 as can be seen in FIGS. 1 and 2 . Manufactured by 3D woven fabric. Such a fabric can be manufactured by the Belgium company 3D WEAVING.

The height e of the connecting portions 13 is, for example, from 1 to 25 mm, more preferably from 10 to 15 mm.

According to the present invention, the reservoir 10 comprises the composition (C), the composition being mostly contained inside the reservoir 10, in particular contained entirely in the reservoir.

The first layer 11 may be a fine-mesh layer, which slows the discharge of the composition (C) from the reservoir 10 when the user presses the reservoir with the aid of their finger or applicator 7 to collect the product. It is configured as a filter with a tendency.

The second layer 12 may have the same structure.

In a variant as shown in FIG. 3 , the second layer 12 facilitates passage of the composition (C), particularly when the reservoir 10 is fitted to the dish 4 when the dish contains the composition (C). It is a less compact structure with openings 14 that allow During this operation, the reservoir 10 is pressed in the direction of the bottom of the dish. The presence of the openings 14 allows the composition to more readily penetrate into the free space between the first and second layers 11 and 12 . The openings 14 preferably open outward in the cells 16 .

The connecting portions 13 can be given in various orientations within the reservoir 10 . As illustrated in FIG. 4a , for example, the connecting portions 13 can extend obliquely in relation to the first and second layers 11 and 12 .

The connecting portions 13 may form cells 16 having alternating V-shaped cross-sections as shown in FIG. 4a .

The connecting portions 13 may be oriented obliquely parallel to each other as shown in FIG. 4b .

The reservoir cannot include an intermediate planar fabric layer between the first and second layers as shown in FIG. 2 .

In a variant as shown in FIG. 4C , the reservoir 10 may comprise at least one intermediate woven fabric layer between the uppermost first layer 11 and the lowermost second layer 12 .

The woven intermediate layer 18 may be planar and parallel to the first and second woven layers.

The connecting portions 13 can extend between the first layer 11 and the second layer 12 . Each of these connecting portions 13 connects the first connecting sub-portion 13a connecting the first layer to the intermediate layer 18 and the intermediate layer 18 to the second layer 12 as shown and a second connecting sub-portion 13b.

Each connecting sub-portion 13a or 13b may be constituted by loops and a bundle of yarns forming those parts when the fabric is viewed in cross-section.

The openings 14 can be given in a wide variety of shapes and dimensions.

The reservoir 10 can be shaped, for example, by cutting with the aid of a punching element or a laser.

The present invention is not limited to specific materials for manufacturing the reservoir 10 .

For example, it is possible to use polyamide, polyolefin, in particular polypropylene, or polyester threads.

It is possible to use a mixture of threads made of different materials.

Various treatments may be applied to the first layer 11 , for example peeling treatments to make the surface more smooth. The first layer may include bristles formed by cutting some of the yarns used to make the 3D woven fabric.

It is also possible, as illustrated in FIG. 5 , to attach to the first layer 11 at least one upper layer 19 permeable to the composition (C), for example a textile or non-woven fabric. In this case, perforations 16 having the same size as the openings 14 are provided in the second layer 12 of the variant of FIG. 3 , for example to facilitate the product reaching this top layer 15 . It may be advantageous to prepare a first layer 11 with

The upper layer is for example joined to the first layer 11 or fastened in some other way, for example by welding or stitching.

Layer 19 can be textured according to the touch required for it. For example, layer 19 is embossed.

In one variant, several 3D woven spacer fabrics overlap each other. It is also possible to fold the 3D woven spacer fabric itself to form the reservoir.

The invention is not limited to the examples only described.

In particular, it is possible to mount the reservoir in a casing manufactured in some other way.

Claims (21)

As a cosmetic article,
the cosmetic article comprises a 3D woven fabric at least partially permeable to the cosmetic composition (C), having a thickness and having a reservoir (10) capable of retaining at least a portion of the cosmetic composition within said thickness;
The 3D woven fabric is obtained by twisting sets of three orthogonal yarns,
wherein said 3D woven fabric is externally lined by a third layer (19) permeable to said composition. The method of claim 1,
wherein the 3D woven fabric has a cellular structure. The method of claim 1,
The 3D woven fabric comprises a first fabric layer (11) and a second fabric layer (12) spaced apart from each other. 4. The method of claim 3,
the first fabric layer (11) and the second fabric layer (12) are interconnected together by connecting portions (13) integrally woven with at least one of the first fabric layer and the second fabric layer; cosmetic items. 5. The method of claim 4,
The connecting parts (13) are woven parts. 5. The method of claim 4,
wherein the connecting portions (13) are individual yarns. 5. The method of claim 4,
wherein the first layer (11) is continuously visible when viewed from a distance of 15 cm with the eye of an ordinary sensitive eye. 5. The method of claim 4,
A cosmetic article, wherein at least one layer has openings. 9. The method of claim 8,
The largest dimension (L) of the openings is between 1 mm and 15 mm. 9. The method of claim 8,
The cross-sectional area of the openings (14) is between 1 mm 2 and 100 mm 2 . 4. The method of claim 3,
The thickness (e) of the reservoir (10) measured between opposite sides of the first fabric layer (11) and the second fabric layer (12) is from 1 mm to 25 mm. The method of claim 1,
wherein the third layer is textured. The method of claim 1,
The reservoir (10) has a surface occupying 1 to 80 cm 2 in a plan view. The method of claim 1,
The contour of the reservoir (10) is circular. The method of claim 1,
wherein the cosmetic composition is selected from foundations, rouges, eye shadows, and sun protection creams. The method of claim 1,
The reservoir comprises the cosmetic composition, cosmetic article. An assembly comprising an article according to claim 1 and a casing, refill or sachet. A cosmetic casing comprising the cosmetic article according to claim 1, wherein the cosmetic casing has a body (3) in which a reservoir (10) of the cosmetic article is held, and a cover movable relative to the body. 19. The method of claim 18,
The reservoir (10) is held in a dish (4) fastened to the body (3), a cosmetic casing. A makeup method with the aid of the cosmetic article according to claim 1, comprising:
and collecting the composition in a reservoir of the cosmetic article and applying the composition to human keratin materials. delete

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