US20070170190A1 - Pinching seal for airtight containers - Google Patents

Pinching seal for airtight containers Download PDF

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Publication number
US20070170190A1
US20070170190A1 US11/548,121 US54812106A US2007170190A1 US 20070170190 A1 US20070170190 A1 US 20070170190A1 US 54812106 A US54812106 A US 54812106A US 2007170190 A1 US2007170190 A1 US 2007170190A1
Authority
US
United States
Prior art keywords
seal
dish
lateral wall
upper edge
lips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/548,121
Other languages
English (en)
Inventor
Frederic Milesi
Fabrice Dieudonat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Services SAS
Original Assignee
Alcan Packaging Beauty Services SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcan Packaging Beauty Services SAS filed Critical Alcan Packaging Beauty Services SAS
Publication of US20070170190A1 publication Critical patent/US20070170190A1/en
Assigned to ALCAN PACKAGING BEAUTY SERVICES reassignment ALCAN PACKAGING BEAUTY SERVICES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MILESI, FREDERIC, DIEUDONAT, FABRICE
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/008—Details; Accessories for making water- or air-tight
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/22—Casings characterised by a hinged cover
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/051—Airtight containers
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00—Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • A45D33/006—Vanity boxes or cases, compacts, i.e. containing a powder receptacle and a puff or applicator

Definitions

  • the invention relates to the field of containers for cosmetic products, typically compacts for make-up products, comprising a base and a cover, the cover and the base being provided with complementary closure means. It relates more specifically to compacts with a tight seal.
  • Cosmetic products in particular for make-up and skin care, often contain volatile compounds that ensure some moisture upon application but that evaporate very quickly when in contact with the free air to leave a dry material on the skin.
  • Other products packaged similarly, may also contain compounds that are sensitive to air. All of these products must be packaged in airtight compacts in order to prevent their condition from quickly deteriorating and becoming either aesthetically unacceptable (for example, a dried-out product at the base of the compact pan) or unusable.
  • the compacts include a hollow cover, typically equipped with an interior mirror, and a hollow base, typically equipped with a frame or intermediate support for one or more pans intended to receive the cosmetic product.
  • the pans can be replaced with refills, enabling the user to pay only for the replacement of the product used while continuing to use the same compact.
  • a refill is generally in the form of a dish or pan containing the cosmetic product, which may be in the form of a gel, foam, a cream, or, more generally, compacted or non-compacted powder.
  • the so-called “airtight” compacts, normally used for these products contain refills developed to provide a seal impervious to the air around the product. These refills are often “sleeved”, i.e. surrounded by a generally thermoformed and/or heat-shrunk sleeve or covered with a generally heat-sealed lid, after packaging so as to ensure proper preservation of the product until the first use by the consumer.
  • Some compacts use the same diametrical interference sealing system as lipstick tubes, but due to the large diameters of the pans, the diametrical interference necessary for ensuring air-tightness is often very high, thereby necessitating significant forces to close and open the compact.
  • the parts associated with the tight seal must necessarily have a shape similar to a circle, an ellipse with low eccentricity or an unflattened oval so as to ensure good conformity of the diametrical, or lateral, interference over the entire periphery of the sealed area.
  • the diametrical or lateral interference which allows for a tight seal, requires not only a relatively significant force to close the container (achieved by pressure on the cover), but also a high force to open it. This can be inconvenient for the user, because the application of such a force can result in a sudden opening of the compact with a risk of spilling the elements contained inside the compact.
  • the invention is intended to provide a compact for volatile components that does not have the aforementioned disadvantages and that allows for the application of a uniform pressure of the seal over the entire working surface thereof, regardless of the shape of the pan used and without requiring an excessive force to open and close the compact.
  • An object, according to aspects of the invention, is to provide a container for a cosmetic product including a dish and a cover, the dish having a base and a lateral wall, the cover being equipped with a seal typically placed at the periphery of the cover, wherein 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 side wall of the dish.
  • the seal may be 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 on the seal, the ends of the internal and external lips are subject, respectively, to a centrifugal and centripetal lateral movement so that both lips come into contact with the lateral wall of the dish.
  • the seal includes an internal lip and an external lip that are substantially axial, i.e. oriented substantially in the direction of the application of the closing force, which itself is generally perpendicular to the base of the dish.
  • the seal preferably has an even cross-section over its entire length and follows a closed contour of which the shape at rest corresponds to the general shape of the upper edge of the lateral wall of the dish. As the lateral wall is generally planar, the substantially axial internal and external lips are oriented in a direction substantially perpendicular to the plane of the seal.
  • the lips have significant height with respect to the thickness of the upper edge of the lateral wall of the dish. They surround a recess of which the width is slightly greater than the thickness of the upper edge of the lateral wall of the dish and of which the height is typically at least equal to half of the thickness.
  • the seal according to embodiments of the invention is designed so that when the base of the recess is subjected to an axial compression stress, the ends of the internal and external lips are subjected, respectively, to a centrifugal and centripetal lateral movement so that they create a sort of macro-pinching of the upper edge of the lateral wall of the dish with two contact areas preventing air from entering.
  • centripetal and centrifugal are used here in a general sense, going beyond a purely axisymmetrical geometric configuration and also respectively mean “inward” and “outward”.
  • the internal and external lips preferably have a comparable flexibility and the movement of their ends has substantially the same amplitude.
  • the external lip which can be less flexible than the internal lip, may have an end that, without application of the closing force, is already near the lateral wall, and the pinching occurs essentially as a result of the centrifugal movement of the end of the internal lip.
  • Embodiments of the invention overcome the problems of dimensional tolerance in production associated with the desired diametrical or lateral interference. Aspects of the invention also overcome, with the pressure stress exerted horizontally on the seal being transformed into a lateral stress acting on the ends of the seal, the problems of planarity encountered in the compacts of the prior art. Indeed, even if the upper edge of the lateral wall does not come into contact with the base of the recess, the overall deformation of the seal may cause a pinching that provides, also in this location, two airtight areas. Embodiments of the invention also make it possible to instantaneously eliminate any diametrical interference upon unlocking of the compact, which in fact makes it possible to apply a lower opening force.
  • the cosmetic product container according to aspects of the invention may be a make-up product refill and/or a compact pan.
  • this container is preferably equipped with an overpack that maintains pressure on the cover.
  • the dish may be placed in the base of the compact, with the cover placed so that it is subjected to an axial closing force by means of either the main cover of the compact or by a secondary cover via axial interference.
  • the dish is preferably made of a material that acts as a barrier to the diffusion of the volatile product concerned.
  • the dish will preferably be made of polypropylene; if it is silicone (for example, cyclomethicone), the dish will preferably be made of polypropylene (PP) or acrylic butadiene styrene (ABS); and if it is isododecane, the dish will preferably be made of polystyrene acrylonitrile (SAN).
  • the seal is made of a flexible material suitable for the volatile compound, for example, an elastomeric polymer such as a stryene-ethylene-butadiene-styrene (SEBS) copolymer or a silicone, preferably a bicomponent polymer, including two components that react when combined.
  • an elastomeric polymer such as a stryene-ethylene-butadiene-styrene (SEBS) copolymer or a silicone, preferably a bicomponent polymer, including two components that react when combined.
  • SEBS stryene-ethylene-butadiene-styrene
  • the cover can be made of any material if the seal covers it completely. Otherwise a material similar to that of the dish may be used, preferably a bit more rigid to preserve the shape of the cover, and therefore that of the seal, under the effect of the stresses caused when the container is opened and closed.
  • the invention also relates to a compact intended for packaging a cosmetic product for facial care, typically in the form of a gel, a pressed or unpressed powder, foam or a cream, the product including a product that is volatile or sensitive to air, the compact including a cover generally equipped with an interior mirror and a base equipped with an intermediate support for at least one pan intended to receive the cosmetic product, wherein the pan is a container such as that defined above.
  • FIG. 1 a shows an exemplary front view cross-section diagram of a container according to the invention with a first type of seal, before application of the closing force.
  • FIG. 1 b shows a front view cross-section diagram of the same exemplary container during application of the closing force.
  • FIG. 2 shows a front view cross-section diagram of a similar exemplary container with an alternative of the same type of seal, before application of the closing force.
  • FIGS. 3 a and 3 b show, respectively, before and during the application of the closing force, the front cross-sections of a second type of seal and the upper edge of the lateral wall of an exemplary container.
  • FIG. 4 shows, during the application of the closing force, a front cross-section diagram of a third type of seal overlapping the upper edge of the lateral wall of an exemplary container.
  • FIG. 5 shows, during the application of the closing force, a front cross-section diagram of a fourth type of seal overlapping the upper edge of the lateral wall of an exemplary container.
  • FIGS. 6 a and 6 b show, respectively, before and during the application of the closing force, the front cross-section diagrams of a fifth type of seal and the upper edge of the lateral wall of an exemplary container.
  • FIGS. 7 a and 7 b show, respectively, before and during the application of the closing force, the front cross-section diagrams of a sixth type of seal and the upper edge of the lateral wall of an exemplary container.
  • the container 1 of this example is a refill for a cosmetic product including a dish 20 and a cover 10 .
  • the dish has a base 21 and a lateral wall 22 .
  • the cover 10 is equipped with a seal 30 that forms a closed contour at the periphery of the cover.
  • the seal 30 includes a substantially axial internal lip 31 and a substantially axial external lip 32 that together surround a recess 33 intended to receive the upper edge 23 of the lateral wall 22 of the dish 20 .
  • the seal 30 is designed so that when the upper edge 23 of the lateral wall 22 of the dish comes into contact with the base 330 of the recess 33 by transmitting axial closing force F on the seal, the ends of the internal 310 lips and external 320 lips are subjected, respectively, to a centrifugal (E) and centripetal (I) lateral movement so that both come into contact with the lateral wall 22 of the dish 20 .
  • the seal 30 is made of a material suitable for the type of cosmetic product packaged. It must, in particular, have good barrier properties with respect to the volatile component that it contains. Depending on the material used, the seal can be made of an extruded or injected elastomeric thermoplastic, an injected and baked elastomer, or silicone, preferably injected as a bicomponent.
  • the seal 30 typically follows a planar peripheral closed contour.
  • the internal lip 31 and the external lip 32 are substantially axial, i.e. oriented substantially in the direction of application of the closing force, perpendicular to the base 21 of the dish and the plane of the seal.
  • the recess 33 has a width that is slightly greater than the thickness of the upper edge 23 of the lateral wall 22 of the dish and of which the height of the recess 33 , in this case, is on the order of twice the thickness.
  • the ends of the internal 310 lips and external 320 lips perform a sort of macro-pinching of the upper edge 23 of the lateral wall 22 of the dish 20 with several contact areas (in some embodiments, three areas) preventing air from entering. If there is a lack of planarity, such as when contact is not established in 43 between the upper edge 23 and the base of the recess 33 , in an embodiment at least two contact areas 41 and 42 prevent air from entering.
  • the internal and external lips can have a comparable flexibility and the movement of their ends can have substantially the same amplitude.
  • the container of this example is a refill for a cosmetic product similar to that presented in the previous example, except that the seal is in the form of a molded elastomeric part that includes, in addition to the internal lips 31 and external lips 32 , a central portion 34 , and therefore entirely covers the cover 10 .
  • the cover 10 may, in this case, be made of any material, since the air-diffusion barrier is provided entirely by the seal and the dish, which must therefore be made of a material creating a suitable diffusion barrier.
  • the cover of the container of this example has a seal of which the cross-section has a low average thickness with respect to the height of the substantially axial lips, in this case typically less than one-fifth of the height.
  • the ends of the internal and external lips have, on their opposing surfaces, gadroons 310 ′ and 320 ′, of which the smaller radius of curvature makes it possible to more precisely localize the contact areas 41 ′, 42 ′, to reduce the contact surface and to locally increase the normal stress in these areas. If, due to a lack of planarity, the contact is not established in 43 ′, there are at least two airtight contact areas in 41 ′ and 42 ′.
  • the container of this example may be small. Its cover has a seal of which the cross-section has an H-shape, with one of the notches of the H serving as a recess for receiving the upper edge of the lateral wall of the dish.
  • the horizontal bar of the H corresponding to the base 530 of the recess, is the thinnest portion of the cross-section of the seal and is easily bowed under the effect of a vertical force, causing the opening of the H branches above the bar and the closing of the H branches below it.
  • the container of this example also may be small. Its cover has a seal of which the cross-section is like that of the previous example, in the shape of an H, but it is non-symmetrical: the external lip, generally thicker and less flexible than the internal lip, has one end that, without application of the closing force, is already near the lateral wall and almost in contact therewith. The pinching is achieved essentially by the centrifugal movement of the end of the internal lip 52 .
  • the cover of the container of this example has a seal made of an extruded thermoplastic elastomer, of which the cross-section has an open recess 63 that is intended to surround, then pinch the upper edge of the lateral wall of the dish, and a hollow interior 65 near the base of the recess 63 , enabling the latter to be easily bowed.
  • the axial movement of the base of the recess causes a bend in the seal, which results in a rotation of the internal and external lips and, consequently, a centrifugal lateral movement of the end of the internal lip and a centripetal lateral movement of the end of the external lip.
  • the cover of the container of this example has a seal 70 of which the cross-section has a substantially constant thickness, which is low with respect to the height of the substantially axial lips, typically less than one-fifth of the height.
  • the base of the recess can be bowed under the effect of the closing force by conforming to the shape of the upper edge 73 of the lateral wall of the dish.
  • the upper edge 73 has a rounded shape, which increases the contact surface perpendicular to the closing force.

Landscapes

  • Closures For Containers (AREA)
US11/548,121 2005-10-11 2006-10-10 Pinching seal for airtight containers Abandoned US20070170190A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0510363 2005-10-11
FR0510363A FR2891707B1 (fr) 2005-10-11 2005-10-11 Joint a pincement pour boitiers etanches

Publications (1)

Publication Number Publication Date
US20070170190A1 true US20070170190A1 (en) 2007-07-26

Family

ID=36671870

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/548,121 Abandoned US20070170190A1 (en) 2005-10-11 2006-10-10 Pinching seal for airtight containers

Country Status (4)

Country Link
US (1) US20070170190A1 (fr)
CN (1) CN101103857A (fr)
BR (1) BRPI0604249A (fr)
FR (1) FR2891707B1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090223988A1 (en) * 2008-03-10 2009-09-10 Hoffmann Neopac Ag Can comprising metal or plastic
US20100147846A1 (en) * 2008-12-15 2010-06-17 Randy Soibel Container Assembly With Flexible Seal
US20110249926A1 (en) * 2008-10-14 2011-10-13 Andreas Gruber Seal for Rolling Bearing, in Particular for Rolling Bearing Used in a Wind Turbine
USD673807S1 (en) 2012-03-10 2013-01-08 Wki Holding Company, Inc. Container lid
USD673808S1 (en) 2012-03-10 2013-01-08 Wki Holding Company, Inc. Container lid
USD675057S1 (en) 2012-03-09 2013-01-29 Wki Holding Company, Inc. Lid
US8376181B2 (en) 2010-05-21 2013-02-19 Wki Holding Company, Inc. Container assembly with flexible lid seal and releasing arrangement
US8678230B2 (en) 2010-07-30 2014-03-25 Snapware Corporation Vessels with air-tight lid systems
US8733550B2 (en) 2012-03-09 2014-05-27 Wki Holding Company, Inc. Nesting container lids with snap on wings
US20140374423A1 (en) * 2013-05-24 2014-12-25 Shuang Chieh Kui Storage container
US20230124007A1 (en) * 2021-10-15 2023-04-20 Blackberry Limited Waterproof container
US12024352B2 (en) * 2019-01-11 2024-07-02 Zwilling J.A. Henckels Ag Freshness-retaining negative pressure container for food

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5875918A (en) * 1997-02-20 1999-03-02 Charles Chang Hermetically-sealed container and closure construction
US20030172949A1 (en) * 2002-03-12 2003-09-18 Rexam Cosmetic Packaging, Inc. Shade-evident airtight container

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788255B1 (fr) * 1999-01-12 2001-02-09 Lir France Sa Boitier a fermeture etanche
JP4781554B2 (ja) * 2001-04-18 2011-09-28 吉田プラ工業株式会社 気密容器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5875918A (en) * 1997-02-20 1999-03-02 Charles Chang Hermetically-sealed container and closure construction
US20030172949A1 (en) * 2002-03-12 2003-09-18 Rexam Cosmetic Packaging, Inc. Shade-evident airtight container

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090223988A1 (en) * 2008-03-10 2009-09-10 Hoffmann Neopac Ag Can comprising metal or plastic
US8613557B2 (en) * 2008-10-14 2013-12-24 Aktiebolaget Skf Seal for rolling bearing used in a wind turbine
US20110249926A1 (en) * 2008-10-14 2011-10-13 Andreas Gruber Seal for Rolling Bearing, in Particular for Rolling Bearing Used in a Wind Turbine
US20100147846A1 (en) * 2008-12-15 2010-06-17 Randy Soibel Container Assembly With Flexible Seal
US8899443B2 (en) 2008-12-15 2014-12-02 Wki Holding Company, Inc. Container assembly with flexible seal
US8376181B2 (en) 2010-05-21 2013-02-19 Wki Holding Company, Inc. Container assembly with flexible lid seal and releasing arrangement
US8678230B2 (en) 2010-07-30 2014-03-25 Snapware Corporation Vessels with air-tight lid systems
US9187223B2 (en) 2012-03-09 2015-11-17 Wki Holding Company, Inc. Nesting container lids with snap on wings
USD675057S1 (en) 2012-03-09 2013-01-29 Wki Holding Company, Inc. Lid
US8733550B2 (en) 2012-03-09 2014-05-27 Wki Holding Company, Inc. Nesting container lids with snap on wings
US9663276B2 (en) 2012-03-09 2017-05-30 Wki Holding Company, Inc. Compressible seal member for container
USD673808S1 (en) 2012-03-10 2013-01-08 Wki Holding Company, Inc. Container lid
USD673807S1 (en) 2012-03-10 2013-01-08 Wki Holding Company, Inc. Container lid
US20140374423A1 (en) * 2013-05-24 2014-12-25 Shuang Chieh Kui Storage container
US12024352B2 (en) * 2019-01-11 2024-07-02 Zwilling J.A. Henckels Ag Freshness-retaining negative pressure container for food
US20230124007A1 (en) * 2021-10-15 2023-04-20 Blackberry Limited Waterproof container
US11820559B2 (en) * 2021-10-15 2023-11-21 Blackberry Limited Waterproof container

Also Published As

Publication number Publication date
FR2891707A1 (fr) 2007-04-13
FR2891707B1 (fr) 2007-11-30
CN101103857A (zh) 2008-01-16
BRPI0604249A (pt) 2007-08-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCAN PACKAGING BEAUTY SERVICES, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MILESI, FREDERIC;DIEUDONAT, FABRICE;REEL/FRAME:019859/0863;SIGNING DATES FROM 20070315 TO 20070327

STCB Information on status: application discontinuation

Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION