WO2024250113A1 - Structures d'étanchéité pour véhicules automobiles - Google Patents

Structures d'étanchéité pour véhicules automobiles Download PDF

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Publication number
WO2024250113A1
WO2024250113A1 PCT/CA2024/050765 CA2024050765W WO2024250113A1 WO 2024250113 A1 WO2024250113 A1 WO 2024250113A1 CA 2024050765 W CA2024050765 W CA 2024050765W WO 2024250113 A1 WO2024250113 A1 WO 2024250113A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
bulb
sealing structure
resilient
substrate
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.)
Ceased
Application number
PCT/CA2024/050765
Other languages
English (en)
Inventor
Nicolas BEAUDOIN
Jean THERRIEN
Yves Martin
Etienne Boucher-Gagne
Nicolas Nadeau
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.)
Mi Commercial Inc
Original Assignee
Mi Commercial Inc
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 Mi Commercial Inc filed Critical Mi Commercial Inc
Publication of WO2024250113A1 publication Critical patent/WO2024250113A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/20—Sealing arrangements characterised by the shape
    • B60J10/24—Sealing arrangements characterised by the shape having tubular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/70—Sealing arrangements specially adapted for windows or windscreens
    • B60J10/74—Sealing arrangements specially adapted for windows or windscreens for sliding window panes, e.g. sash guides
    • B60J10/75—Sealing arrangements specially adapted for windows or windscreens for sliding window panes, e.g. sash guides for sealing the lower part of the panes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/80—Sealing arrangements specially adapted for opening panels, e.g. doors

Definitions

  • This invention relates generally to sealing structures for automotive vehicles.
  • Sealing structures in automotive vehicles play important functional roles. Among them, sealing structures may be used to prevent infiltration of water and particles and may be used for sound proofing. Seals for doors, tailgates and windows are particularly important. The configuration of these seals differs according to the configuration of the vehicle, but they commonly share a basic geometry that comprises a resilient lip or bulb that is positioned to fill a gap at the junction between a structural frame and a door, hood or window panel to realize the seal.
  • the so-called open lips seal configuration as disclosed for example in US 5,544,448 is prone to lip flipping, stick-slip effect and poor compression set.
  • Lip flipping occurs when the lip becomes misaligned relative to its normal functioning configuration due to factors such as friction, buckling, aging (alteration of resiliency), presence of particles such as dirt or ice and sub-optimal fixation to the vehicle.
  • Stick-slip effect consists essentially in a jerking motion of the seal (in part due to the molecular structure of the seal) during static and dynamic frictional interactions with the door or tailgate and causes squeaking noises as well as accelerated wear of the seal.
  • Compression set, or the loss of dynamic properties of the seal results from aging (changes in molecular structure) of the seal material as well as from sub-optimal design of seal structure configuration which can be limited by the method of manufacturing the seal.
  • Seals are predominantly made of the thermoplastic elastomers manufactured into shape using extrusion or injection molding.
  • Extrusion presents several disadvantages with regards to design flexibility since it is limited to design in the cross-section dimension (2-dimensional) the third dimension being strictly linear.
  • Contoured shapes of parts manufactured by extrusion are imparted by secondary operations such as stretch bending which introduce important residual stress in the thermoplastic elastomer detrimental to its sealing functions.
  • a metal core is often encapsulated within the extruded seal to provide structural support to an otherwise unstable 3-D shaped extrusion. The metal core adds significant, undesirable weight to the sealing structure.
  • thermoplastic elastomers extrusions are poorly adaptable with regard to their viscoelastic sealing properties.
  • a sealing structure for sealing a gap between two or more panels in a vehicle, the sealing structure comprising: a longitudinal member comprising a first component consisting of a resilient sealing bulb of thermoplastic vulcanizate (TPV) coupled to a second component consisting of a substrate configured to be fastened to a substrate retaining structure within the vehicle, wherein the resilient sealing bulb comprises a hollow section defining a lumen extending along the longitudinal member, the hollow section comprising a wall having a cross-sectional width surrounding the lumen and wherein the TPV of the wall exhibits a gradient of anisotropy in the direction of the width.
  • TPV thermoplastic vulcanizate
  • a sealing structure for sealing a gap between two or more panels in a vehicle, the sealing structure comprising: a contoured longitudinal member comprising a first component consisting of a resilient sealing bulb of thermoplastic vulcanizate (TPV) coupled to a second component consisting of a substrate configured to be fastened to a substrate retaining structure within the vehicle, wherein the resilient sealing bulb comprises a hollow section defining a lumen extending along the longitudinal member and wherein the resilient sealing bulb is free of residual stress.
  • TPV thermoplastic vulcanizate
  • a method for manufacturing a longitudinal sealing structure comprising a resilient sealing bulb and a substrate, the method comprising the steps of determining the local sealing compression energy required along a gap between two panels to generate sealing requirements; determining the configuration and properties of the sealing structure based on the sealing requirements, wherein the determining of the configuration and properties of the sealing structure comprises determining the configuration and properties of the resilient sealing bulb and the substrate, to generate a sealing structure design; manufacturing the sealing structure according to the sealing structure design wherein the manufacturing comprises overmolding the resilient sealing bulb on the substrate.
  • Figure 1 is a cross-sectional view of a sealing structure as part of an outerbelt in accordance with an embodiment of the invention.
  • Figure 2 is a longitudinal cross-sectional view of the bulb in accordance with another embodiment of the invention.
  • Figure 3 is a cross-sectional view of a sealing structure as part of an outer belt in accordance with yet another embodiment of the invention.
  • Figure 4 is a cross-sectional view of a sealing structure as part of a lift gate in accordance with an embodiment of the invention.
  • Figure 5 are cross-sectional and perspective views of a sealing structure showing sealing features in accordance with another embodiment of the invention.
  • Figure 6 is a cross-sectional view of a sealing structure as part of a B-pillar according to an embodiment of the invention.
  • Figure 7 is a perspective view of a sealing structure according to another embodiment of the invention.
  • injection molding it is meant the production of parts by injecting material, most commonly but not exclusively thermoplastic and thermosetting polymers, into a mold.
  • overmolding it meant the process of forming a structure by injecting a melted thermoplastic material such as a thermoplastic elastomer in a mold cavity in which at least part of another structure (commonly referred to as a substrate) is exposed such as to enable the molding of the injected melted material on the substrate. Overmolding is sometimes also referred to as insert molding.
  • bi-components it is meant a structure made of two different materials at least one of which is overmolded on the other.
  • residual stress it is meant the permanent deformation of an extruded part to conform it to a contoured shape and which creates stress in the elastomer in the contoured section that modifies the elastomeric properties.
  • sealing compression energy it is meant the energy stored or absorbed in the sealing structure when the panels defining a gap are brought in sealing configuration.
  • dynamic compression energy it is meant the energy stored in the seal structure when the seal is dynamically compressed by a panel such as a door or a sliding window.
  • anisotropy it is meant a non-random (non-isotropic) spatial distribution of molecules within a thermoplastic structure with the result that the thermoplastic structure has at least one physical property that has a different value when measured in different directions.
  • the sealing structure comprises a longitudinal member comprising a first component consisting of a resilient sealing member and a second component consisting of a substrate.
  • a cross-section of an exemplary sealing structure is shown in Figure 1 as part of an outerbelt.
  • the resilient sealing member together with the substrate provides the compression sealing forces and is coupled to the substrate 11 which is sufficiently rigid to support and orient the resilient sealing member and to be fastened to a substrate retaining structure 14.
  • the resilient sealing member is a bulb 10 configured to make contact with the panel, for example window 15 in Figure 1, to realize the sealing.
  • the bulb 10 comprises a wall 12 of a predetermined shape and width (or thickness) and defining a hollow space forming a lumen 13 in the longitudinal direction of the sealing structure.
  • the bulb may be made of any elastomer orthermoplastic elastomers suitable for injection molding which may comprise other chemical components to fine tune their viscoelastic and/or textural properties.
  • the bulb is preferably made of a thermoplastic vulcanizate (TPV) which comprises a mixture of polyolefin plastic such as polypropylene (PP) and a cross-linked olefin copolymer elastomer such as an ethylene-propylene-diene rubber (EPDM).
  • TPV thermoplastic vulcanizate
  • the wall 12 of the bulb is characterized by at least one zone or layer 16 of orientated polymer fibers forming a gradient of alignment along the width or thickness of the wall as schematically represented in Figure 2. This gradient is referred to as anisotropy in the alignment of the fibers. At least one zone or layer of alignment is adjacent the outer surface 17 of the bulb.
  • the bulb has a tensile strength ratio 0°/90° of between about 2.0 and 1.0 and more preferably between about 1.8 and 1.2.
  • the tensile strength ratio can be obtained by stretching a section of the wall in the direction of the alignment of the fibers, which is in the longitudinal direction of the sealing structure (the 0° angle stretch) to obtain the 0° tensile strength measurement (in N/mm 2 or MPa) and then in the direction perpendicular (the 90° angle stretch) to obtain the 90° tensile strength measurement.
  • the ratio of surface area of lumen 13 to wall 12 thickness is between 1:1 and 80:1, more preferably between 2:1 and 60:1 and more preferably between 4:1 and 40:1.
  • the bulb 10 is overmolded on the substrate 11 by injection molding.
  • the sealing structure is a bi-component structure with the bulb made of one component and the substrate made of a second component.
  • the bulb is made of TPV and the substrate is made predominantly of PP.
  • the substrate 11 may be made of more than one component provided the components which are overmolded by the bulb are compatible for adhesion between the bulb and the component.
  • the resilient sealing bulb 10 is attached to a carrier or substrate 11 at an attachment region (or interface) 18 to create a bi-component interface and the resilient longitudinal bulb is configured to maintain a desired range of dynamic spatial geometry to realize a predetermined sealing resiliency.
  • dynamic spatial geometry it is meant that the bulb 10 undergoes conformational changes during the dynamic displacement of the components or panels of a dynamic opening relative to one another. For example, this effect is observed when the resilient sealing bulb is compressed into sealing position or released to a non-sealing position by the reciprocal action of the component parts or panels of the dynamic opening.
  • the substrate 11 is configured to optimize and maintain a high degree of functionality of the resilient sealing bulb upon repeated cycles of sealing compression and return to optimal pre-sealing compression position.
  • the longitudinal sealing structure may comprise a bulb conformation support 19.
  • the bulb conformation support comprises at least two adjacent (that may or may not be contiguous) components, more rigid than the bulb, at an angle and configured to generate resulting force vectors to counteract or oppose the sealing compression force applied on the bulb in at least a direction substantially perpendicular and substantially directly opposite the sealing compression force.
  • the bulb conformation support is "L" shaped or inverted “L” shaped as shown in Figure 3 in which the bulb conformation support 19 is part of the substrate 11.
  • one of the components of the bulb conformation support is made of the same material as the bulb but is thicker than the part of the wall of the bulb making sealing contact with the panel.
  • one of the components of the bulb conformation support is a flange of the same material as the bulb and integral to the bulb and configured to contact a structure when installed as part of the sealing structure in the vehicle to achieve a compression counteracting force.
  • the sealing structure also comprises functionalities to anchor the sealing structure to a vehicle support structure such as a frame, pillar, brackets and the like.
  • a sealing structure comprising a longitudinal member comprising a resilient sealing member such as a bulb 10 overmolded on a substrate 11 and wherein the substrate 11 comprises fastening elements 20 to anchor the sealing structure on a substrate retaining structure in the vehicle.
  • the substrate is injection molded and the localized fastening elements are an integral part of the injection molded design of the substrate which is manufactured in a one-shot injection.
  • longitudinal member of the sealing structure is contoured.
  • contoured it is meant that the longitudinal member, comprising the resilient bulb and the substrate, comprises one or more 3-dimensionally curved section(s) designed to closely follow curve-shaped gaps in a vehicle structure.
  • the resilient bulb is overmolded on a contoured substrate and is itself shaped in a predetermined contoured configuration.
  • the contoured bulb is substantially free of residual stress. That is to say, the contoured conformation of the bulb is realized within the mold and no secondary operations are needed to shape the sealing structure into its final conformation.
  • the wall of the contoured bulb is characterized by an anisotropy in the alignment of the fibers.
  • the wall of the contoured bulb has a tensile strength ratio (0°/90°) as expressed by the tensile strength in the direction of the alignment (0° angle) over the tensile strength in the direction perpendicular to the alignment (90° angle) of between about 2.0 and 1.0 and more preferably between about 1.8 and 1.2.
  • the dimensionless ratio of surface area of lumen to wall thickness is between 1:1 and 80:1, more preferably between 2:1 and 60:1, even more preferably between 2:1 and 40:1 and yet even more preferably between 4:1 and 20:1.
  • the overmolded resilient bulb enables the design of sealing structure configurations that optimize the positioning of the resilient sealing bulb in sealing compression and non-compression states as well as the directional compression sealing forces to optimize the compression load deflection (CLD). For example, minimizing localized stress from the sealing compression by creating a repartition (or distribution) of the sealing compression energy on more than one bending part in the resilient bulb.
  • CLD compression load deflection
  • the residual stress-free overmolded bulb is particularly advantageous in contoured seal configurations in which bending in prior art seal arrangements, such as in extruded bulb, creates a localized increase or decrease in compression load deflection (CLD) particularly in the dynamic CLD.
  • CLD compression load deflection
  • the sealing structure with an overmolded bulb of the present invention considerably improves CLD in contoured seal configurations such as a door seal.
  • the sealing structure of the present invention can reduce the CLD energy (area under the load-deformation curve) by up to 25% when compared to sealing structures of the prior art while still retaining a sufficient CLD to absorb to prevent a breakdown of the energy absorption upon closure of a door that would result in "over-slamming".
  • the degree of anisotropy in the direction of the width of the wall of the bulb provides a directional modulation of the elastomeric properties of the bulb.
  • a contoured sealing structure with a substantially uniform CLD along the curvature of the resilient bulb.
  • the contoured resilient bulb exhibits substantially uniform tensile strength both in the longitudinal direction and in the direction perpendicular to the longitudinal direction along the longitudinal sealing structure.
  • the gap to be sealed exhibits variable dimensions along its length and/or variable impact loading force (for example a door inertia may vary at different position of on the door) either by design or because of the tolerances.
  • the sealing structure of the invention may comprise resilient sealing features 26.
  • resilient sealing features it is meant structures integral to injection molded sealing lips (open lips) or resilient bulb and enabling a localized adjustment of compression sealing energy.
  • the profile, location and dimensions of the resilient sealing features are predetermined and integrated in the design of the mold and are simultaneously overmolded with the resilient sealing member of the sealing structure to generate an integral resilient sealing member comprising the resilient sealing features that are thus made of the same material as the rest of the resilient sealing member.
  • the resilient sealing features can be strategically localized at positions along the sealing structure to adjust the sealing compression properties of the resilient bulb where the dimensions of the gap the dynamic compression parameters vary.
  • a method for manufacturing a sealing structure comprising a resilient sealing member and a substrate, the method comprising the steps of determining the local sealing compression dynamic properties required along a gap between two panels to generate a set of sealing requirements, determining the configuration and properties of the sealing structure based on the sealing requirements, wherein the determining of the configuration and properties of the sealing structure comprises determining the configuration and properties of the resilient sealing member and the substrate, to generate a sealing structure design, manufacturing the sealing structure according to sealing structure design wherein the manufacturing comprises overmolding the resilient sealing member on the substrate.
  • the determining of the configuration and properties of the sealing structure may further comprise the step of determining the configuration and properties of resilient sealing features.
  • the resilient sealing bulb 10 is part of an outer belt generally shown at 80.
  • the bulb is coupled to the substrate 11.
  • the bulb comprises an upper concave portion 21 (Figure 1) that bends inwardly upon being compressed by the window 15.
  • the bulb provides flexible configuration design to dynamically optimize the CLD. That is to say, the design may be configured to allow the sealing compression force on the window by the resilient sealing member to be constant while the window is being closed.
  • the concave upper portion 21 may comprise a groove 22 to adjust the dynamic flexibility of the upper concave portion and can also help optimizing the compression forces throughout the resilient sealing member.
  • This particular embodiment exemplifies how the resilient bulb of the invention can optimize the sealing energy stored in the resilient structure by distributing the sealing compression forces at more than one hinge location in the wall of the bulb as opposed to the prior art lip configuration in which all the compression force is concentrated in the lower elbow of the lip.
  • the prior art open lip seal design requires thick lip hinge to provide sufficient rigidity to the lip to generate an adequate seal.
  • the resilient bulb of the invention can optimize sealing properties such as the CLD. It will be appreciated that the optimization of the CLD may be achieved with different bulb configurations. For example, the upper portion of the bulb 10 may be convex.
  • the sealing structure may also comprise other components, other than the bulb, to provide additional sealing functionalities.
  • the outerbelt sealing structure may comprise an upper resilient member 100, integrally coupled to (continuous with) the bulb or not and coupled to the substrate and contacting an exterior sheet metal of the vehicle to complete the seal of the gap between the sheet metal and the window.
  • the upper resilient member 100 is overmolded on the substrate in the same injection as the bulb.
  • the bulb may contact the sheet metal directly to form the seal.
  • the concave upper portion may serve to reduce accumulation of water compared to prior art lip seals (between the lip and carrier) while serving as a water channel to drain any water accumulation.
  • the bulb for outer belt of the present invention is covered on at least a part of its surface that contacts the window with a friction reducing material 23.
  • this friction reducing material is flock (flock fibers).
  • the outer belt is a hidden outer belt.
  • hidden outer belt it is meant that the sealing structure including the longitudinal member (bulb and substrate) is below the horizontal line defined by the top of the sheet metal 50.
  • the resilient sealing bulb 10 is part of a sealing structure for a lift gate.
  • the sealing lip design of the prior art can create problems such as lip flipping which in turn causes the sealing structure to lose its functional properties.
  • the resilient sealing member comprises a lower section 40 that connects a tip region 41 and upper section 42 of the bulb 10 to the attachment region 18.
  • the upper section 42 of the bulb is substantially flat in its non-compressed state, maintained in this conformation in part by the configuration of the attachment between the resilient sealing member and the substrate 11 in attachment region 18 to prevent lip flipping.
  • the bulb is preferably overmolded on susbtrate 11.
  • the upper section 42 may be concave to enable a flexing of the front part of the resilient sealing member upon closing (sealing compression) of a dynamic opening such as a liftgate.
  • the cross section of the bulb 10 is substantially oval providing two main directions or orientations, substantially perpendicular, of sealing compression forces.
  • the bulb may comprise an internal protrusion in the lower section 40 that abuts the internal part of the upper section 42 to support the sealing compression when the lift gate is closed.
  • the bulb 10 may comprise resilient sealing features 34.
  • An embodiment of a sealing structure comprising several types of resilient sealing structures is shown in Figure 5.
  • the resilient sealing member may comprise one or several types of resilient sealing structures.
  • the resilient sealing structures may span the entire length of the sealing features or, alternatively, only a portion of the length. The contribution of a resilient sealing features to the elastomeric (sealing energy) properties of the sealing structure depends on its shape and dimension, which are predetermined based on the analysis of the sealing requirements of the gap. Examples of resilient sealing features are shown in Figure 5.
  • ribs 35 in sealing compression, buckle and are straightened in extension (liftgate open) but to a maximum length thereby preventing the tip of a lip or bulb from "lip-flipping".
  • the bulb may comprise additional resilient sealing features to optimize the dynamic/sealing of the sealing structure such as a projecting lip or a hinge structure such as a trough to enable additional degrees of freedom during compression/extension.
  • additional resilient sealing features may be combined to optimize the function of the sealing structure.
  • the sealing structure is part of a door seal as for a door or doors having the B-pillar as a frame.
  • a cross-section view of a B-pillar seal is shown in Figure 6.
  • the sealing structure comprises the bulb 10 which is positioned to contact front door 60 and a bulb conformation support 19 positioned to contact rear door 61.
  • the bulb conformation support dynamically contributes to the sealing of both doors of the B-pillar.
  • the bulb conformation support provides a counter acting force to the compression of the bulb by the front door 60.
  • Figure 7 shows a perspective view of a contoured sealing structure exemplified by a B- pillar sealing structure. It will be appreciated that sealing structures for other gaps such as an outer belt for example may also be contoured. Contoured sealing structures of the prior art contain residual stress in sealing lips or bulbs along the curved areas resulting in uneven sealing viscoelastic properties of the seal structure and therefore uneven sealing pressure on the door or window that result in sub-optimal sealing.
  • the overmolded bulb of the present invention is substantially free of residual stress in curved areas therefore providing a more uniform resiliency and sealing pressure along the length of the sealing structure.
  • the resilient sealing bulb of the invention can also better adapt to the shape of the gap to be sealed such as profiled windows which may be curved or parabolic or the contour of a door.
  • the resilient sealing bulb is overmolded on a substrate.
  • the overmolding is achieved by forming the resilient sealing bulb directly on the substrate by injection molding.
  • the residual stress-free bulb enables greater flexibility in the design of sealing structures with variable sealing compression (sealing energy) requirements along the length of the sealing structure especially with sealing structures exhibiting curved or profiled or contoured shapes.
  • the configuration of the substrate may vary along the length of the sealing structure.
  • the attachment interface 18 may be configured to optimize the properties of the sealing dynamics along the structure.
  • the sealing structure of the invention enables the spreading of the load from compression load deflection (CLD), tear or tensile strength and sealing pressure on a greater portion of the substrate since the sealing structure comprises more than one tension bearing point as opposed to the open lip seal design which comprises a single tension bearing point.
  • CLD compression load deflection
  • the resilient sealing bulb 10 has a substantially uniform diameter/hollow interior shape and/or wall thickness along the length of the sealing structure even in sealing structures presenting important radii of curvature.
  • the wall thickness of the resilient sealing bulb in the attachment interface 18 may differ from the wall thickness outside of the attachment region (as shown in figures 12 and 13) providing configuration options (relative thickness of bulb, shape of carrier, etc...) to optimize the dynamic sealing properties of the sealing structure.
  • the sealing structure of the invention is suitable for any substantially longitudinal gap associated within certain structures in a vehicle such as without being limited to, outer-belts, A, B and C pillars, cowls, doors, sky roofs and the like.
  • the sealing structure of the invention is particularly well suited for dynamic gap involving panels that open and close.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seal Device For Vehicle (AREA)

Abstract

L'invention concerne une structure d'étanchéité pour sceller un espace entre deux panneaux ou plus dans un véhicule, la structure d'étanchéité comprenant un élément longitudinal qui à son tour comprend un premier composant constitué d'une ampoule d'étanchéité élastique d'élastomère thermoplastique couplée à un second composant constitué d'un substrat configuré pour être fixé à une structure de retenue de substrat à l'intérieur du véhicule, l'ampoule d'étanchéité élastique comprenant une section creuse définissant une lumière s'étendant le long de l'élément longitudinal.
PCT/CA2024/050765 2023-06-09 2024-06-07 Structures d'étanchéité pour véhicules automobiles Ceased WO2024250113A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202363472071P 2023-06-09 2023-06-09
US63/472,071 2023-06-09
US202363604920P 2023-12-01 2023-12-01
US63/604,920 2023-12-01

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WO2024250113A1 true WO2024250113A1 (fr) 2024-12-12

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PCT/CA2024/050765 Ceased WO2024250113A1 (fr) 2023-06-09 2024-06-07 Structures d'étanchéité pour véhicules automobiles

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178064A2 (fr) * 1984-09-04 1986-04-16 Schlegel (Uk) Holdings Limited Joints d'étanchéité en matière plastique
US20050046124A1 (en) * 2003-08-26 2005-03-03 Schlegel Corporation Weatherseal with sealing surface having strips of material exhibiting reduced adhesion bonding to frozen water
US6968649B2 (en) * 2000-01-18 2005-11-29 Laird Holdings Limited Anisotropic weatherstrip
US20170240034A1 (en) * 2010-06-03 2017-08-24 Cooper Standard Automotive Inc. Method of formulating low gravity sponge rubber for automotive weatherstrips

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178064A2 (fr) * 1984-09-04 1986-04-16 Schlegel (Uk) Holdings Limited Joints d'étanchéité en matière plastique
US6968649B2 (en) * 2000-01-18 2005-11-29 Laird Holdings Limited Anisotropic weatherstrip
US20050046124A1 (en) * 2003-08-26 2005-03-03 Schlegel Corporation Weatherseal with sealing surface having strips of material exhibiting reduced adhesion bonding to frozen water
US20170240034A1 (en) * 2010-06-03 2017-08-24 Cooper Standard Automotive Inc. Method of formulating low gravity sponge rubber for automotive weatherstrips

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