CN101103857A

CN101103857A - Clamping grommet for seal box body

Info

Publication number: CN101103857A
Application number: CNA200610131027XA
Authority: CN
Inventors: F·米莱斯; F·迪厄多纳
Original assignee: Alcan Packaging Beauty Services SAS
Current assignee: Albea Services SAS
Priority date: 2005-10-11
Filing date: 2006-10-11
Publication date: 2008-01-16
Also published as: FR2891707A1; FR2891707B1; US20070170190A1; BRPI0604249A

Abstract

A cosmetic product container includes a dish and a cover, the dish having a base and a lateral wall, and the cover being equipped with a seal typically placed at the periphery of the cover. The seal includes at least one substantially axial internal lip and one substantially axial external lip that surround a recess intended to receive the upper edge of the lateral wall of the dish, the seal being designed so that when the upper edge of the lateral wall of the dish comes into contact with the base of the recess by transmitting an axial closing force (F) on the seal, the ends of the internal and external lips are subjected respectively to a centrifugal (E) and centripetal (I) lateral movement so that both come into contact with the lateral wall of the dish. The container may be a refill or a pan for a make-up compact.

Description

Be used to seal the clamping packing ring of box body

Technical field

[01] the present invention relates to be used for the particularly box body field of cosmetics of cosmetics, described box body comprises a bottom and a lid, and described lid and described bottom are provided with complementary packaged unit.The present invention relates more particularly to hermetically closing formula box body.

Background technology

[02] cosmetics usually contain volatile ingredient especially for the product of improving looks and appearance is nursed, and these compositions guarantee certain oiliness of smearing, and evaporate rapidly when still contacting with free air, so that stay dried cut on skin.Other also may contain composition to air-sensitive with the similar approach packaged products.All these products must be packaged in fully with the isolated box body of air in, otherwise their state will be very fast rotten, and become or from unacceptable (product is in the exsiccation of cupule bottom) in appearance, perhaps can not use.

[03] box body generally comprises the lid of a hollow and the bottom of a hollow, and lid generally has a scope, and the bottom generally has the middle aperture plate or the base of one or several cupule (godet), and these cupules are used to receive described cosmetics.Described cupule can be replaced by the product charges, and the user can only pay and change the expense of consumer products like this, and can continue to use described box body.The shape of product charges is generally a vallecular cavity or a cupule that contains described cosmetics, and the form of cosmetics is gel, foam, butyrous, perhaps more at large for compressing or the powder of malcompression.So-called " sealing " box that generally is used for these products comprises the product charges through research, to guarantee around the product hermetically enclosed to air.These product charges usually are " suit (sleev é es's) ", promptly surrounded by a sleeve, sleeve is generally formed by thermoforming and/or thermal contraction, perhaps covers one generally at the soft lid of packing post heat-seal, uses to guarantee the first time that product is saved in well the consumer.

[04] in order to solve these sealing problems, major part comprises that the cosmetics most of the time of volatile ingredient has been packaged in the cylindrical container with circle, ellipse or avette orthogonal cross-sections that is called " rod (sticks) ".Be easy to disturb well sealing of realization by the diameter between cover and the health with this class container, the cylindrical side wall that is about to cover firmly is enclosed within around the cylindrical wall of health, and the static diameter of cover cylindrical wall is slightly less than the static diameter of health cylindrical wall.Some box body uses the pass through diameter identical with " sticks " to disturb the system that seals, but because the diameter of cupule is bigger, it is usually strong especially to guarantee that the required diameter of sealing disturbs, and this just means closes and open the very big power of box body needs.In this case, the part that hermetically closing relates to must have near round or have a very oval in shape of small eccentricity degree, perhaps one almost do not flatten avette, with guarantee around whole seal area, to have good diameter disturbs-also can be called the side direction interference-uniformity.

[05] still, diameter that can hermetically closing disturbs or side direction is disturbed and not only needed sizable power, with closing containers (this power is easy to reach by being pressed on the lid certainly), also need a very big power, to open container, this may be inconvenient to the user, may cause throwing open box body because apply this power, therefore is included in the danger that the interior composition of described box body has ejection.

[06] disturbs in order to alleviate tetanic footpath, french patent application FR 2 803 993 proposes to use soft lip limit, one lip limit is connected on the lid, another lip limit is connected on the box body, work in coordination by the tangent line connection between two lip limits, when box body was closed, one of these lip limits and another bore a bending stress.These lip limits can reduce to open or close the required power of lid, but this method can only be used for the basic circular part that is, promptly have the part of the very little oval cross section oval or that seldom prolong of circle, the degree of eccentricity, otherwise just may not reach good sealing level.

[07] in general, more particularly to not having the cupule of circular shape, general use adds or repeats to be cast in the faced washer on the charges lid, and these packing rings and are guaranteed have very on the packing ring, and the shutdown system of strong pressure combines.Therefore, french patent application FR 2 788 255 proposes a kind of lid that has a packing ring, and this packing ring has at least one outstanding soft lip limit, so that the outer surface along box body inner room peripheral wall forms at least one seal area in the closed position of described box body.French patent application FR 2 819 159 proposes similar principle, but has limited the sealing of cupule with the integral body that abuts in the auxiliary lid formation on the described cupule.

[08] owing to uses area that the product piece needs greatly and the flexibility of some part of the box body that causes thus, so when cupule is not circle, be very difficult to guarantee the uniform pressure on the whole effective area of packing ring.Therefore may cause packing ring to lack adhesive force, make box body the preventing the evaporated product evaporation and therefore avoiding the rotten effect of cosmetics of expection that do not recur in some part of box body.For evenly closing on the whole active surface that guarantees packing ring, some are difficult to realize and the box body structure of very expensive complexity to need design.Therefore, french patent application FR 2 833 144 has described a kind of seal box that slideway is arranged, wherein an auxiliary lid is directed moving to a release position from a detent position, described slideway combines with the cupule that some and auxiliary lid connect together, pressure on the packing ring is distributed on the whole length of lid better, rather than only is distributed in hinge and hasp place.

[09] the objective of the invention is to realize a kind of box body that is used to have the product of volatile ingredient, this box body does not have above-mentioned shortcoming, and how the shape of the cupule that no matter uses can apply uniform pressure on the whole effective area of packing ring, and opening and closing need not used too big power.

Summary of the invention

[10] first target of the present invention is one to be used for the container of cosmetics, this container comprises a vallecular cavity and a lid, described vallecular cavity has a bottom and a sidewall, described lid has a packing ring that generally is positioned at described lid periphery, it is characterized in that, described packing ring comprises at least one axial substantially axial substantially outer lip limit, epipharynx limit and, in, the outer lip limit is around a cavity that is used to accept the described sidewall top edge of vallecular cavity, affiliated gasket design is, when the described top edge of the sidewall that makes vallecular cavity by the axial force transmission of will close to packing ring contacts with the bottom of described cavity, in, the end on outer lip limit is born centrifugal respectively and entad moving, and a lip limit is contacted with the described sidewall of vallecular cavity with another lip limit.

[11] need on the whole girth of junction between vallecular cavity and the lid, a seal member be set in order to guarantee fully to aeroseal.Here it is why packing ring preferably have the shape of closed perimeter, packing ring generally is positioned at the periphery of described lid, so that obtain the flexible benefit of lid.Packing ring according to the invention comprises an epipharynx limit and an outer lip limit, and they are axially substantially, and is promptly basic towards the direction that applies the power of closing, the bottom vertical of the general and vallecular cavity of this direction.Packing ring is preferably on its whole length has constant cross section, and along a sealing profile, its rest shape is corresponding with the global shape of the sidewall top edge of vallecular cavity.The sidewall of vallecular cavity generally is the plane, be axial inside and outside lip limit substantially towards one with the vertical substantially direction in the plane of packing ring.

[12] height on these lip limits is obviously greater than the thickness of the sidewall top edge of vallecular cavity.They are around a cavity, and the width of cavity is slightly larger than the thickness of the sidewall top edge of vallecular cavity, and the height of cavity generally equals half of described thickness at least.Gasket design according to the invention is, when an axial compressive force is born in the bottom of described cavity, the end on inside and outside lip limit is born centrifugal respectively and entad being displaced sideways, make them produce a kind of little clamping action, and have two contact zones that stop air to pass through the described top edge of vallecular cavity sidewall.The adjective here " entad " and " centrifugal " are used for surpassing the broad sense of axisymmetric pure geometric meaning, and the meaning is respectively " inwardly " and " outwards ".

[13] inside and outside lip limit preferably has similar pliability, so their end is moved and had identical amplitude substantially.But, particularly to undersized container, does not have soft outer lip limit, epipharynx limit to have one and do not apply when closing power near the end sidewall, so clamping action is mainly undertaken by centrifugal the moving of end, epipharynx limit.

[14] one aspect of the present invention can solve the problem of disturbing relevant manufacturing dimension error with diameter of being considered or side direction.On the other hand, be converted to a side force that acts on the packing ring end because the plane is applied to pressure on the packing ring, the present invention also can solve the problem of the flatness that runs in the box body of prior art.In fact, do not contact with cavity bottom even the sidewall top edge is local, the distortion of packing ring integral body also can clamp, and this clamping action also can guarantee two seal areas herein.The present invention also can eliminate all diameters immediately from the box body release and disturb, and a very little opening force can be arranged like this.

[15] example given below shows the different packing rings cross section that can obtain desirable effect.These packing rings are applicable to different embodiment and possible different application.Their cross section depends on principle of uniformity: the bottom of cavity is easy under the effect of axial force to sink, and moving axially of it cause the packing ring bending, shows as inside and outside lip limit and clamps.Can be according to the research packing ring cross section, position of the contact zone of considering and the shape of sidewall edge end, to help best contact conditions: on the part relative with the bottom, exist bead (godron) under the direct effect of axially closing power, bigger contact area etc. to be arranged with the round end of end, lip limit, cavity edge.

[16] cosmetics container according to the invention charges that can be cosmetics and/or a cupule of box body.Under the situation of charges, this container can be equipped with an additional packing that remains on the pressure on the lid.Under the situation of cupule, vallecular cavity can be positioned at box body bottom, lid or the main lid by box body or bear one by a less important lid (axial interference) and axially close power.

[17] vallecular cavity is preferably made the material of the diffusion obstacle of the evaporated product that relates to by a kind of becoming.For example, if relate to water, vallecular cavity is preferably made by polypropylene, if relate to silicone (cyclohexyl methyl ketone (cyclom é thycone)), vallecular cavity is preferably made by polypropylene (PP) or acrylonitrile-butadiene-styrene (ABS) (ABS), if relate to isodecane (isodod é cane), then vallecular cavity is preferably made by polystyrene benzene alkene nitrile (SAN).

[18] packing ring is made by a kind of material that adapts with volatile ingredient, and for example the elastomeric polymer of SIS/SEBS (SEBS) type is perhaps made by the silicone of a kind of preferably bi-component (two components that act on during use).

[19] if packing ring covers lid fully, then lid can be made by any material.If not exclusively cover, then consider a kind of and the vallecular cavity materials similar, preferably a little more firmly,, and therefore keep the shape of packing ring so that keep the geometry of lid under the effect of the power that when described container opens or cuts out, produces.

[20] the invention still further relates to a kind of be used to pack be generally gel, compress or the box body of powder, foam or the butyrous appearance care cosmetic product of malcompression, described product comprises a kind of volatilization or to the composition of air-sensitive, described box body comprises that one generally has the lid and an at least one intermediate support that is used to accept the cupule of described cosmetics of scope, it is characterized in that described cupule is as mentioned above a container.

Description of drawings

[21] Fig. 1 a schematically shows the section elevation of a container according to the invention before applying the power of closing, and this container has first kind packing ring.

[22] Fig. 1 b schematically shows the section elevation of same container during applying the power of closing.

[23] Fig. 2 schematically shows the section elevation of a similar containers before applying the power of closing, and this container has a modification of similar packing ring.

[24] Fig. 3 a and 3b represent in detail that respectively one second class packing ring and container side wall top edge are before applying the power of closing and apply facade cross section during this power.

[25] Fig. 4 schematically shows the facade cross section of the 3rd class packing ring during applying the power of closing on the container side wall top edge.

[26] Fig. 5 schematically shows the facade cross section of the 4th class packing ring during applying the power of closing on the container side wall top edge.

[27] Fig. 6 a and 6b schematically show the 5th class packing ring respectively and the container side wall top edge is applying the forward and backward facade cross section of the power of closing.

[28] Fig. 7 a and 7b schematically show the 6th class packing ring respectively and the container side wall top edge is applying the forward and backward facade cross section of the power of closing.

The specific embodiment

[29] example 1 (Fig. 1 a and 1b)

[30] this routine container 1 is cosmetics charges, comprises a vallecular cavity 20 and a lid 10.Vallecular cavity has a bottom 21 and a sidewall 22.Lid 10 has a periphery at lid and forms the packing ring 30 that seals profile.

[31] packing ring 30 comprises an axial substantially axial substantially outer lip limit 32, epipharynx limit 31 and, and inside and outside lip limit surrounds a cavity 33 of top edge 23 that is used to accept the sidewall 22 of vallecular cavity 20.Packing ring 30 is designed to, when the top edge 23 of the sidewall 22 of vallecular cavity contacts by will axially closing power F and being delivered on the packing ring and with the bottom 330 of cavity 33, the end on epipharynx limit 310 and outer lip limit 320 is born centrifugal (E) and being displaced sideways of (I) direction entad respectively, and a lip limit is contacted with the sidewall 22 of vallecular cavity 20 with another lip limit.

[32] packing ring 30 is made by a kind of material that adapts with cosmetics that be equipped with.Particularly packing ring should have good barrier properties to the volatile ingredient that cosmetics contain.According to used material, packing ring can be made by the silicone material of the elastomeric material of a kind of extruding or the flexible thermoplastic material that injects or a kind of injection and slaking or preferably bi-component injection.

[33] in a single day be positioned on the lid, packing ring 30 is just along a planar circumferential profile that seals.Epipharynx limit 31 and outer lip limit 32 be axially substantially, the direction of the bottom 21 of promptly basic edge and vallecular cavity and the vertical power of closing that applies in plane of packing ring.The width of cavity 33 is slightly larger than the thickness of top edge 23 of the sidewall 22 of vallecular cavity, and in this case, it highly is approximately two times of described thickness.When axial compressive force F is born in the bottom 330 of cavity 33, the end on epipharynx limit 310 and outer lip limit 320 forms a kind of grand clamping (macro-pincement) to the top edge 23 of the sidewall 22 of vallecular cavity 20, this grand clamping has three contact zones, perhaps, especially lacking under the situation of flatness, just, when on top not setting up contact between edge 23 and the cavity 33 at 43 places, the

contact zone

41 and 42 that this grand clamping has at least two blocks air to pass through.

[34] inside and outside lip limit has similar pliability, so their end is moved and had essentially identical amplitude.

[35] example 2 (Fig. 2)

[36] this routine container be one with previous examples in the very approaching cosmetics charges of container, difference is that the shape of packing ring is the elastic part of an injection molding, this part also comprises a core 34 except epipharynx limit 31 and outer lip limit 32, therefore cover lid 10 fully.In this case, lid can be made by any material, because stop stopping fully of air diffusion to be guaranteed by packing ring and vallecular cavity, so packing ring and vallecular cavity should be made by a kind of suitable material that applies diffusion barrier.

[37] example 3 (Fig. 3 a and 3b)

[38] this routine container top has a packing ring, and the cross section average thickness of this packing ring is generally less than 1/5th of described height here less than the basic axially height on lip limit.The apparent surface of end, inside and outside lip limit has bead (godron) 310 ' and 320 ', and their less sweeps can make contact zone 41 ', 42 ' location more accurately, reduce contact area, and local these regional vertical stresses that increase.If owing to lack flatness, locate not set up contact, so also have two at least to air impervious contact zone 41 ' and 42 ' 43 '.

[39] example 4 (Fig. 4)

[40] this routine container is a small size.It is the packing ring of H shape that its lid has a cross section, and a wherein breach of H shape is as the cavity of accepting the sidewall top edge of vallecular cavity.The horizon bar that is equivalent to the H shape of cavity bottom is the weakest part in packing ring cross section, therefore is easy to subside under the effect of a vertical force, cause the above H v notch v of described horizon bar open, and the branch below the H shape closes.

[41] example 5 (Fig. 5)

[42] this routine container also is a small size.Its lid has a packing ring, the cross section of this packing ring is the same with the example of front to be H shape, but this H shape is asymmetric: outer lip limit integral body is thicker, and does not have epipharynx limit softness, the end on this outer lip limit is not applying when closing power near sidewall, and almost contacts with sidewall.Clamping action is mainly undertaken by centrifugal the moving of 52 ends, epipharynx limit.

[43] example 6 (Fig. 6 a and 6b)

[44] this routine container top has the packing ring that a thermoplastic elastomer (s) that pushes is made, there is a near open cavity 63 and that is used to surround the sidewall top edge that clamps vallecular cavity then interior empty 65 cavity 63 bottoms in its cross section, and this makes cavity 63 be easy to sink.And when applying when closing power, moving axially of cavity bottom causes the packing ring bending, shows as the rotation on inside and outside lip limit, causes therefore that the side direction of end, epipharynx limit is centrifugal to be moved and the side direction of end, outer lip limit entad moves.

[45] example 7 (Fig. 7 a and 7b)

[46] this routine lid has a section thickness substantially constant and the basic axially little packing ring 70 of height on lip limit of ratio, and this thickness is generally less than 1/5th of described height.Therefore, cavity bottom can be out of shape under the effect of the power of closing, and coincide with the shape of the sidewall top edge 73 of vallecular cavity.In this example, the sidewall top edge is round, and this has increased the contact area vertical with the power of closing.

Claims

1. cosmetics container (1), it comprises a vallecular cavity (20) and a lid (10), and described vallecular cavity has a bottom (21) and a sidewall (22), and described lid is furnished with a packing ring (30) that typically is positioned at described lid periphery,

It is characterized in that, described packing ring comprises an at least one axial substantially epipharynx limit (31) and an axial substantially outer lip limit (32), in described, the outer lip limit surrounds a cavity (33) of top edge (23) that is used to accept the sidewall of described vallecular cavity, described gasket design is: when the bottom (330) by will axially closing described top edge that power (F) is delivered to the sidewall that makes described vallecular cavity on the described packing ring and described cavity when contacting, in described, the end (310 on outer lip limit, 320) bear corresponding centrifugal being displaced sideways (E) and entad be displaced sideways (I), thereby they contact with the described sidewall of described vallecular cavity separately.

2. container as claimed in claim 1 is characterized in that, described packing ring is with same closed outline, and the shape of this profile when static is corresponding with the global shape of the sidewall top edge of described vallecular cavity.

3. container as claimed in claim 1 or 2 is characterized in that, the width of described cavity is slightly larger than the thickness of top edge (23) of the sidewall (22) of described vallecular cavity (20), and the height of described cavity equals described thickness half at least.

4. as each described container in the claim 1 to 3, it is characterized in that, described epipharynx limit (31) and described outer lip limit (32) have similar pliability, make their described entad and centrifugal being displaced sideways of end (310,320)---it produces by applying the power of closing (F)---have essentially identical amplitude.

5. as each described container in the claim 1 to 3, it is characterized in that, described outer lip limit---it is than the less softness in described epipharynx limit---has an end, under the situation that does not apply the power of closing, this end is near the sidewall of described vallecular cavity, and described clamping action is mainly undertaken by centrifugal the moving of end, described epipharynx limit (52).

6. as each described container in the claim 1 to 4, it is characterized in that, the described bottom (330) of described cavity (33) is easy to sag under the effect of the described power of closing (F), thereby, moving axially of it causes described packing ring (30) bending, this bending shows as described epipharynx limit (31) and described outer lip limit (32) is clamped on the top edge (23) of described sidewall, therefore produces at least two sealing contact zones (41,42).

7. as each described container in the claim 1 to 4, it is characterized in that, the end on described lip limit has bead (310 ', 320 ') on the surface that they are faced mutually, the less sweep of described bead (310 ', 320 ') can be located and the contacted zone of described vallecular cavity sidewall (41 ', 42 ') more accurately.

8. as each described container in the claim 1 to 4, it is characterized in that the section thickness of described packing ring (70) is less than 1/5th of the height on described axial substantially lip limit; And the sidewall top edge (73) of described vallecular cavity be shaped as the rounding shape.

9. as each described container in the claim 1 to 8, it is characterized in that described vallecular cavity is made by a material, this material plays the effect of the barrier of evaporated product diffusion, and wherein, described evaporated product is included in the cosmetics of packing like this.

10. as each described container in the claim 1 to 9, it is characterized in that, described packing ring is a part, this part also comprises a core (34) except described epipharynx limit (31) and described outer lip limit (32), described assembly covers described lid fully, and is made by a material, and this material plays the effect of the barrier of evaporated product diffusion, wherein, described evaporated product is included in the cosmetics of packing like this.

11. box body, it is used to pack and typically is gel, compresses or the cosmetics of the powder of malcompression, foam or the nursing of butyraceous appearance, described product comprises a volatility or to the composition of air-sensitive, described box body comprises: a lid, and it is furnished with an inner mirror body usually; With a bottom, it is furnished with an intermediate support, and this intermediate support is used to support at least one cupule, and described cupule is used to admit described cosmetics,

It is characterized in that described cupule is just like each container in the claim 1 to 10.