EP3879062B1 - Seal strip and method of manufacturing the same - Google Patents
Seal strip and method of manufacturing the same Download PDFInfo
- Publication number
- EP3879062B1 EP3879062B1 EP21160365.9A EP21160365A EP3879062B1 EP 3879062 B1 EP3879062 B1 EP 3879062B1 EP 21160365 A EP21160365 A EP 21160365A EP 3879062 B1 EP3879062 B1 EP 3879062B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- area
- seal strip
- sponge rubber
- epdm
- functional area
- 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.)
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Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000007789 sealing Methods 0.000 claims description 72
- 229920001971 elastomer Polymers 0.000 claims description 47
- 239000005060 rubber Substances 0.000 claims description 47
- 229920002943 EPDM rubber Polymers 0.000 claims description 15
- 241000283216 Phocidae Species 0.000 claims 13
- 229920001821 foam rubber Polymers 0.000 description 21
- 230000001413 cellular effect Effects 0.000 description 18
- 238000009413 insulation Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/54—Fixing of glass panes or like plates
- E06B3/58—Fixing of glass panes or like plates by means of borders, cleats, or the like
- E06B3/62—Fixing of glass panes or like plates by means of borders, cleats, or the like of rubber-like elastic cleats
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
- E06B7/23—Plastic, sponge rubber, or like strips or tubes
- E06B7/2305—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging
- E06B7/2307—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging with a single sealing-line or -plane between the wing and the part co-operating with the wing
- E06B7/2309—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging with a single sealing-line or -plane between the wing and the part co-operating with the wing with a hollow sealing part
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/54—Fixing of glass panes or like plates
- E06B3/58—Fixing of glass panes or like plates by means of borders, cleats, or the like
- E06B3/62—Fixing of glass panes or like plates by means of borders, cleats, or the like of rubber-like elastic cleats
- E06B2003/627—Fixing of glass panes or like plates by means of borders, cleats, or the like of rubber-like elastic cleats with specific characteristics concerning the material
- E06B2003/6276—Fixing of glass panes or like plates by means of borders, cleats, or the like of rubber-like elastic cleats with specific characteristics concerning the material with parts of differing nature, e.g. hardness
Definitions
- the present invention relates to a sealing strip and a method for its manufacture.
- the object of the present invention is to provide a sealing strip which has improved thermal insulation properties and at the same time has the known quality of EPDM (ethylene propylene diene rubber) seals.
- EPDM ethylene propylene diene rubber
- a sealing strip for sealing an intermediate space between a first component and a second component, in particular for windows or doors, with a cross-section that is essentially constant along a profile sheet or profile direction (A), the sealing strip being in a sectional plane lying transversely to the profile sheet a functional area formed from a first EPDM cellular rubber and an insulating area (which can also be referred to as an insulating area) formed from a second EPDM cellular rubber, the first EPDM cellular rubber and the second EPDM cellular rubber having different properties.
- the sealing strip can be a strand-like body, which has its greatest extension along or parallel to the profile sheet. Along this extension or profile sheet, the sealing strip can preferably have a constant cross section or a constant cross-section distribution in the functional area and in the insulating area.
- the wording "essentially constant cross-section" includes smaller local deviations, such as notches or incisions, which can be made at periodic intervals along the profile sheet on the sealing strip. These can serve to improve the ability of the sealing tape to be laid in corners.
- the first component can be a window sash, for example, whereas the second component can be a frame, in particular a blind frame or window frame, in which the window sash is held. Furthermore, the first component can be a door leaf and the second component can be a door frame.
- the first component can be a window sash and the second component can be a pane of glass held by the window sash.
- the sealing tape can bring about damping and/or insulation by sealing the intermediate space. Insulation can prevent or limit the propagation of energy (ie heat or sound). Thus, an insulating effect can be achieved.
- damping can be a conversion of kinetic energy into another, no longer relevant form of energy (ie energy dissipation can be achieved). For example, when sound is insulated, sound transmission can be prevented by reflection. On the other hand, when the sound is dampened, the sound energy can be converted into heat. The following is not expressly distinguish between insulation and damping, since both effects can be caused by the same characteristics.
- EPDM abbreviated ethylene-propylene-diene
- M group includes terpolymers of ethylene, propylene and an unspecified diene.
- EPDM is one of the synthetic rubbers with a saturated main chain (according to DIN ISO 1629: M group).
- EPDM rubbers can have double bonds in the side chains and can therefore be sulfur vulcanizable.
- the use of EPDM is advantageous because EPDM has high weather and ozone resistance as well as high thermal stability. It also has an advantageous chemical resistance to polar media (such as water or alcohol).
- EPDM only has a low impact on the environment during production, processing and use, which is why it also meets the latest environmental standards.
- EPDM is characterized by favorable processability and low material costs. Furthermore, a sufficient permanent elasticity of EPDM is to be mentioned as an advantageous property for a sealing strip in the sense of the present invention.
- the EPDM is in the form of foam rubber.
- the foam rubber can be a largely closed-pore and elastic foam and belong to the pore rubbers.
- the sponge rubber can be produced from EPDM with the addition of propellant gases. Sponge rubber can be embossed EPDM, for example.
- the manufacturing process of the first cellular rubber for the functional area can differ from the manufacturing process of the second cellular rubber for the insulating area, so that, for example, a cellular rubber with a larger pore space is provided in the insulating area.
- foam rubber is characterized by its advantageous thermal insulation properties. It is particularly advantageous that the entire functional area and insulating area are made exclusively of foam rubber.
- the insulating area can be arranged in the intermediate space such that it faces an outside (ie, for example, a side exposed to the environment) of the first and the second component.
- the insulating area can have mainly insulating properties.
- the functional area can face an inside of the first and the second component and mainly have mechanical properties such as locking the sealing tape in the gap and/or blocking a passage through the gap. Nevertheless, the functional area can also have insulating properties.
- the different properties of the first EPDM sponge rubber and the second EPDM sponge rubber can be, for example, a different density, elongation, tensile strength, elasticity, thermal conductivity, hardness, compression set at 100° C., compression set at -25° C., tensile strength and/or elongation.
- the density of the functional area can be higher than that of the insulating area by a factor in the range from 2 to 5, in particular in a range from 3 to 4.5.
- the elongation, tensile strength and resilience can be negligible.
- the properties mentioned should reach a certain minimum value.
- the functional area can advantageously fulfill its main function, namely to hold the sealing tape at a desired position.
- the insulating area can advantageously fulfill its main function, namely providing an insulating or isolating effect.
- the first sponge rubber can have an elongation of more than 100%.
- the second sponge rubber can have an elongation in a range from 0 to 200%.
- the elongation can be a relative change in length (ie an elongation or a shortening) of a body under load relative to a state without load.
- the first cellular rubber and the second cellular rubber can be connected to one another during a manufacturing process, for example.
- the sealing strip can be produced by a coextrusion process.
- the first foam rubber and the second foam rubber can be brought together before leaving a profile nozzle, which defines the desired cross section of the sealing strip.
- the profile nozzle can then define the shape of the functional area and the insulating area.
- the sealing tape according to the invention can be provided, which realizes the two contradictory properties, mechanical strength and durability as well as improved insulating properties by less strong material, in one sealing tape.
- the insulation area can be designed more simply and thus more cost-effectively.
- the functional area can preferably have a fastening section with which the sealing strip can be fixed to the first component or the second component.
- the fastening section can be designed to be brought into engagement with a complementary element formed on the first or the second component, it being possible for the fastening section to be held in the complementary element, in particular in a slot or a joint, preferably in a positive and/or non-positive manner .
- the fastening section can be designed in the form of a barb, so that it ensures a secure and permanent hold on the complementary element of the first or the second component.
- the functional area can have a support section which is supported on the first or the second component. The support section is preferably supported on the same component on which the fastening section is also fixed.
- the support section and the fastening section can expediently be arranged in such a way that the functional area is fixed in a tensioned manner on the first or the second component.
- the fastening section can fix the functional area in the manner of a barb, whereas the support section presses against the first or the second component.
- the compressive force required for this can be brought about by the geometric shape of the support section and/or by the material properties of the support section. In this way, the functional area and thus the entire sealing strip can be securely fixed without the sealing strip wobbling or being able to slip. Furthermore, tolerances in the manufacturing process of the functional area can thus be compensated for and a secure hold of the sealing strip can nevertheless be achieved.
- a support section can be formed on the insulating area from the first foam rubber or the second foam rubber.
- the functional area and the insulating area can be connected to one another, it being possible for a connecting line to be formed between the functional area and the insulating area.
- the connection can be materially bonded, for example in that the sealing tape is coextruded.
- the connecting line can have a force transmission section, in which the connecting line extends essentially in a straight line.
- the section of the connecting line via which force is transmitted from the fastening section to the insulating area indirectly via or through the functional area can preferably be regarded as the force transmission section.
- the straight extension of the connecting line in the force transmission section has the advantage that stress peaks in the material can be avoided both in the functional area and in the insulating area and in particular in the contact area of the two areas.
- the term essentially straight means that the connecting line in the force transmission section, in particular at its distal ends, can certainly have small curves, in particular in order to achieve particularly low-stress transitions to the adjacent areas of the connecting line.
- the fastening section is arrow-shaped, with the arrow-shaped geometry of the fastening section engaging in a corresponding undercut on a frame (as an example of the first or second component) and being able to form a positive and/or non-positive engagement.
- the fastening section can be designed symmetrically to a line of symmetry.
- the line of symmetry can advantageously divide the functional area into two halves of equal size. In this way it can be ensured that the force transmitted by the fastening section is transmitted to the functional area in equal parts on the right and on the left side of the fastening section.
- the functional area and/or the insulating area can have a projection, in particular a lip, which is designed to come into contact with the first or the second component.
- the projection can serve to create a connection between the sealing strip and the first component or the second component, in particular to prevent or at least reduce the passage of gas (in particular air).
- the protrusion can cause the intermediate space to be mechanically blocked.
- the sealing strip can establish a connection between the first component and the second component, which connection traverses the gap.
- the first or the second component can be in contact with the fastening portion, whereas the other of the first or the second component is in contact with at least the projection.
- the projection can be designed in such a way that it comes into contact with the first or the second component in a prestressed manner.
- the pretensioning can be effected by the projection being inclined or bent in a direction such that the first or the second component at least partially displaces the projection relative to the functional area in a mounted state of the sealing strip, compared to an unmounted state of the sealing strip.
- the projection can have an elastic restoring force, so that the projection can apply a restoring force, which counteracts the direction of displacement, during a displacement.
- the elastic restoring force can be brought about by material properties of the respective foam rubber and/or by a geometric shape of the projection. As a result, a secure sealing of the intermediate space can be achieved, since secure contact of the projection with the first component or the second component is always guaranteed.
- the protrusion is provided on the functional area.
- the projection is provided on the insulating area. It is also conceivable that a projection is provided on the functional area and on the insulating area. In this case, the projection can protrude from the functional area and/or the insulating area into the intermediate space.
- the Insulating area and/or the functional area have a contact section. The projection can be part of the abutment section. The contact section can be wavy.
- the contact section can preferably be designed to come into contact with the first or second component, in particular with a pane.
- the contact section can reliably contact a surface that is not perfectly flat, in that the wavy contact section adapts to the shape of the surface.
- the abutment section can have a substantially sinusoidal geometry.
- a wave crest of the wavy contact section particularly preferably has a smaller extension than the projection or projections. In this way it can be ensured that the projection can always shield the contact section against external influences due to its greater extension in the direction of the first or second component and thus a particularly flawless contact of the contact section with the first or second component can be ensured. In this way, it is possible in particular to prevent grains of dust or liquids from getting into the area between the contact section and the first or second component.
- the first EPDM sponge rubber can have a density in a range from 0.1 to 2.0 g/cm 3 , in particular from 0.4 to 1.5 g/cm 3 .
- This density range has turned out to be advantageous because a sufficiently high resistance to physical and chemical influences, such as impacts, vibrations and temperature differences can be achieved and at the same time a basic insulating function can be ensured.
- the functional area which is formed from the first cellular rubber, can be exposed to higher mechanical loads than the insulating area. Nevertheless, the functional area can provide a certain sealing function through the selection of the density area, so that the sealing tape can provide an improved sealing effect overall.
- the second EPDM sponge rubber can have a density in a range from 0.05 to 1.0 g/cm 3 , in particular from 0.1 to 0.4 g/cm 3 .
- a very high insulating effect can be achieved in this area, so that the insulating area is responsible for a high degree of insulation of the sealing tape.
- other material properties such as, for example, the mechanical resilience, are negligible in the insulating area, since the functional area assumes these functions in the sealing tape according to the invention.
- the functional area and/or the sealing area can define at least one cavity that extends in the profile sheet.
- the functional area and/or the insulating area can surround at least one cavity in the cross section of the sealing strip or at least one cavity can be provided in the functional area and/or insulating area.
- the hollow space can be designed in such a way that the overall geometric stability of the sealing strip is increased.
- the cavity can improve the insulating properties.
- the stability and, on the other hand, the sealing property of the sealing strip can be improved by the hollow space.
- the cavity can have an essentially rectangular shape in cross section.
- several cavities can also be provided, in particular five cavities can be provided.
- the functional area can expediently have two cavities, one of which is preferably arranged in the fastening section.
- the insulation area can have three cavities. In an alternative embodiment, five cavities can be provided in the insulation area.
- the first EPDM sponge rubber may have a hardness greater than 40 Sh A and/or the second EPDM sponge rubber may have a hardness less than 40 Sh A.
- the functional area can provide its function (i.e. holding the sealing strip and providing a seal between the first component and the second component) while being sufficiently resistant to wear.
- the first EPDM cellular rubber can have a tensile strength greater than 5 N/mm 2 and/or the second EPDM cellular rubber can have a tensile strength in a range from 0 to 5 N/mm 2 .
- the mechanical resilience of the Functional area and the insulating area can be designed for the respectively assigned main function.
- the resilience of the first sponge rubber can be about 1.5-3 times the resilience of the second sponge rubber. The preferred ratio of the resilience ensures that the functional area, which has to absorb the higher, often fluctuating forces during use, achieves the same service life as the insulating area.
- the reliability of the sealing tape as a whole can be increased.
- the first EPDM sponge rubber can have a thermal conductivity in a range from 0.05 to 0.5 W/(mK), in particular from 0.08 to 0.35 W/(mK), and/or the second EPDM sponge rubber can have a Have thermal conductivity in a range from 0.01 to 1.0 W/(mK), in particular from 0.01 to 0.08 W/(mK).
- the thermal conductivity also called thermal conductivity coefficient, can be a material property that determines the flow of heat through the first foam rubber and the second foam rubber due to heat conduction.
- the thermal conductivity shows how well a material conducts heat or how well it is suitable for thermal insulation. The lower the value of thermal conductivity, the better the thermal insulation.
- the sealing strip according to the invention can be formed by a step of coextrusion, so that the first cellular rubber and the second cellular rubber are brought together to form the sealing strip.
- the first EPDM cellular rubber and the second EPDM cellular rubber can thus preferably be formed together.
- the constant formation of the functional area and the insulating area along the profile sheet favors the production of the sealing strip Co-extrusion, since particularly simple geometries can be provided on both extrusion dies.
- a particularly high level of skill in connecting the functional area and the insulating area can be achieved by co-extrusion.
- the very good cross-linking of both foam rubbers contributes in particular to this.
- FIG 1 a profile of a sealing strip 1 according to the invention is shown.
- the sealing strip 1 extends along a profile track A (see 4 ).
- the profile corresponds to a cross section in a sectional plane that runs transversely to the profile sheet A of the sealing strip 1 .
- the sealing strip 1 has a functional area 2 and an insulating area 3 .
- a fastening section 4 is provided in the functional area 3, with which the sealing strip 1 can be fixed to, for example, an undercut of a window frame.
- the functional area has a projection which is designed as a lip 5 which, when a window sash held in the window frame is closed, is in contact with the window sash.
- the functional area 4 establishes a connection between the window frame and the window sash and physically breaks a thermal bridge between the window frame and window sash.
- the functional area 2 is made of an EPDM material (ethylene propylene diene rubber), which is designed as a sponge rubber (ie a hammered EPDM).
- the material from which the functional area is formed is referred to below as a first EPDM foam rubber.
- the insulating area 3 is formed from an EPDM material which is in the form of a foam rubber (ie an embossed EPDM).
- the material from which the insulating area is formed is referred to as a second EPDM foam rubber.
- the second foam rubber has a significantly lower density than the first foam rubber.
- the first foam rubber has a density that is approximately 4 times higher than that of the second foam rubber.
- the functional area has two cavities or recesses 6 which extend in the profile sheet A. A cavity 6 is arranged in the fastening section 4 .
- the insulating area 3 has three further cavities 6 which also extend along the profile sheet A.
- the functional area 2 has a support section 7 which interacts with the fastening section 4 in such a way that when the sealing strip 1 is fixed to a component, the sealing strip is braced against the component in order to be held securely thereon.
- the profile of the sealing strip 1 has a hook section 8 which is provided on the insulating area 3 .
- the sealing strip 8 can be additionally secured against detachment on a component to which it is attached.
- the hook section 8 interacts with a further undercut on the respective component.
- the hook section 8 engages behind a complementary section on the component. This prevents the insulating area 3 from folding down or tipping away from the component to which the sealing strip 1 is attached.
- FIG 2 Another embodiment of the present invention is shown.
- the functional area 2 is essentially limited to the fastening section 4.
- the remaining profile of the sealing strip 1 consists of the insulating area 3.
- the lip 5 is formed on the insulating area 3 in the present embodiment.
- the insulating area 3 has five cavities 6 .
- the sealing strip 1 has a contact section 9 which is formed on the insulating area 3 .
- the contact section 9 comes into contact with the first or second component.
- the sealing tape 1 of the present embodiment is used as a glass gasket.
- the fastening section 4 is fixed to a frame of a glass pane and the insulating area 3 is pressed with its contact section 9 against the glass pane.
- FIG. 1 is a further embodiment of the present invention and essentially corresponds to the previous embodiment with the exception that the insulating area 3 has two symmetrical lips 5 which are provided on the abutment section 9. FIG. The two lips project further from the insulating area 3 than the contact section 9 .
- the functional area 2 consists essentially of the fastening section 4 .
- the insulating area 3 also has a cavity 6 .
- FIG 4 a schematic three-dimensional view is shown showing the sealing tape 1 of the previous embodiment as it is being unwound from a roll.
- the profile sheet A, in which the sealing strip 1 extends, can be seen.
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Gasket Seals (AREA)
- Seal Device For Vehicle (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Building Environments (AREA)
Description
Die vorliegende Erfindung betrifft ein Dichtungsband und ein Verfahren zu dessen Herstellung.The present invention relates to a sealing strip and a method for its manufacture.
In Zukunft können sich gesetzliche Voraussetzungen so ändern, dass Hausneubauten als Passivhaus und Fast-Null-Energiehaus zum EU-weiten Standard werden. Beim Erreichen dieses Ziels spielt die Gebäudehülle im Baubereich eine zentrale Rolle, weil diese den Energiehaushalt und den Wohnkomfort eines Gebäudes maßgeblich beeinflusst. Insbesondere hat eine Dichtung eines Fenstersystems einen immensen Einfluss auf die Gesamtbewertung der Gebäudehülle, trotz des geringen Flächenanteils einer solchen Dichtung. EPDM-Dichtungen sind bekannt, siehe z.B.
In verschiedenen Berechnungsmodellen und U-Wert Kalkulationen wurde nachgewiesen, dass die Dichtungseigenschaft einer solchen Dichtung wesentlich für die gesamte Gebäudehülle ist. So kann beispielsweise bei einem Einsatz von hochwärmedämmender Dichtungsmaterialien der U-Wert der Gebäudehülle um ca. 0,1 W/m2K verbessert werden. Somit bieten Dichtungen ein sehr hohes Einsparpotential.Various calculation models and U-value calculations have shown that the sealing properties of such a seal are essential for the entire building envelope. For example, the U-value of the building shell can be improved by approx. 0.1 W/m 2 K when using highly thermally insulating sealing materials. Thus, seals offer a very high savings potential.
Die vorliegende Erfindung macht es sich zur Aufgabe, ein Dichtungsband bereitzustellen, das verbesserte Wärmedämmeigenschaften aufweist und gleichzeitig die bekannte Qualität von EPDM-Dichtungen (Ethylen-Propylen-Dien-Kautschuk) aufweist.The object of the present invention is to provide a sealing strip which has improved thermal insulation properties and at the same time has the known quality of EPDM (ethylene propylene diene rubber) seals.
Diese Aufgabe wird gelöst mit einem Dichtungsband gemäß Anspruch 1 und einem Herstellungsverfahren gemäß Anspruch 11. Weitere Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus den abhängigen Ansprüchen. Erfindungsgemäß wird ein Dichtungsband zum Abdichten eines Zwischenraums zwischen einem ersten Bauteil und einem zweiten Bauteil, insbesondere für Fenster oder Türen, mit einem entlang einer Profilbahn bzw. Profilrichtung (A) im Wesentlichen gleichbleibenden Querschnitt bereitgestellt, wobei das Dichtungsband in einer quer zur Profilbahn liegenden Schnittsebene einen aus einem ersten EPDM-Moosgummi gebildeten Funktionsbereich und einen aus einem zweiten EPDM-Moosgummi gebildeten Dämmbereich (der auch als Isolationsbereich bezeichnet werden kann) aufweist, wobei der erste EPDM-Moosgummi und der zweite EPDM-Moosgummi unterschiedliche Eigenschaften aufweisen. Das Dichtungsband kann ein strangförmiger Körper sein, welcher seine größte Erstreckung längs oder parallel zu der Profilbahn aufweist. Entlang dieser Erstreckung bzw. Profilbahn kann das Dichtungsband vorzugsweise einen konstanten Querschnitt bzw. eine konstante Querschnittsverteilung in den Funktionsbereich und in den Dämmbereich aufweisen. Die Formulierung "im Wesentlichen gleichbleibender Querschnitt" umfasst dabei kleinere lokale Abweichungen, wie Einkerbungen oder Einschnitte, welche in periodischen Abständen längs der Profilbahn an dem Dichtungsband eingebracht seien können. Diese können einer Verbesserung der Verlegbarkeit des Dichtungsbands in Ecken dienen. Das erste Bauteil kann beispielsweise ein Fensterflügel sein, wohingegen das zweite Bauteil ein Rahmen, insbesondere ein Blendrahmen bzw. Fensterstock, in dem der Fensterflügel gehalten ist, sein kann. Ferner kann das erste Bauteil ein Türblatt und das zweite Bauteil ein Türrahmen sein. Darüber hinaus kann das erste Bauteil ein Fensterflügel und das zweite Bauteil eine von dem Fensterflügel gehaltene Glasscheibe sein. Das Dichtungsband kann durch Abdichten des Zwischenraums eine Dämpfung und/oder eine Dämmung bewirken. Dabei kann eine Dämmung eine Ausbreitung von Energie (d.h. Wärme oder Schall) verhindern oder einschränken. Somit kann eine isolierende Wirkung erreicht werden. Demgegenüber kann eine Dämpfung eine Umwandlung von Bewegungsenergie in eine andere, nicht mehr relevante Energieform sein (d.h. es kann eine Energiedissipation erreicht werden). So kann beispielsweise bei einer Dämmung des Schalls die Schallübertragung durch Reflektion verhindert werden. Bei einer Dämpfung des Schalls kann die Schallenergie dagegen in Wärme umgesetzt werden. Im Folgenden wird nicht ausdrücklich zwischen Dämmung und Dämpfung unterschieden, da beide Effekte durch dieselben Merkmale bewirkt werden können. Daher sind beide Begriffe im Folgenden als synonym zueinander anzusehen. EPDM (ausgeschrieben Ethylen-Propylen-Dien; M-Gruppe) umfasst Terpolymere aus Ethylen, Propylen und einem nicht näher festgelegten Dien. EPDM gehört zu den Synthesekautschuken mit gesättigter Hauptkette (nach DIN ISO 1629: M-Gruppe). EPDM-Kautschuke können Doppelbindungen in den Seitenketten besitzen und können daher mit Schwefel vulkanisierbar sein. Die Verwendung von EPDM ist vorteilhaft, da EPDM eine hohe Wetter- und Ozonbeständigkeit sowie eine hohe thermische Beständigkeit aufweist. Ferner weist es eine vorteilhafte chemische Beständigkeit gegen polare Medien (wie beispielsweise Wasser oder Alkohol) auf. Darüber hinaus belastet EPDM bei der Herstellung, Verarbeitung und Nutzung nur in geringem Maße die Umwelt, weswegen es auch neueste Umweltstandards erfüllt. Ferner zeichnet sich EPDM durch eine günstige Verarbeitbarkeit und geringe Materialkosten aus. Ferner ist eine ausreichende Dauerelastizität von EPDM als vorteilhafte Eigenschaft für ein Dichtungsband im Sinne der vorliegenden Erfindung zu nennen. Erfindungsgemäß liegt das EPDM als Moosgummi vor. Dabei kann das Moosgummi ein weitgehend geschlossenporiger und elastischer Schaumstoff sein und zu den Porengummis gehören. Der Moosgummi kann unter Zusatz von Treibgasen aus EPDM hergestellt werden. Moosgummi kann beispielsweise getriebenes EPDM sein. Dabei kann sich der Herstellungsprozess des ersten Moosgummis für den Funktionsbereich von dem Herstellungsprozess des zweiten Moosgummis für den Dämmbereich unterscheiden, sodass beispielsweise in dem Dämmbereich ein Moosgummi mit einem größeren Porenraum bereitgestellt wird. Generell zeichnet sich Moosgummi durch seine vorteilhaften Wärmedämmeigenschaften aus. Besonders vorteilhaft ist es, dass der gesamte Funktionsbereich und Dämmbereich ausschließlich aus Moosgummi ausgebildet sind. Der Dämmbereich kann so in dem Zwischenraum angeordnet sein, dass er einer Außenseite (d.h. Beispielsweise einer der Umwelt ausgesetzten Seite) des ersten und des zweiten Bauteils zugewandt ist. Der Dämmbereich kann dabei hauptsächlich dämmende Eigenschaften aufweisen. Demgegenüber kann der Funktionsbereich einer Innenseite des ersten und des zweiten Bauteils zugewandt sein und hauptsächlich mechanische Eigenschaften wie beispielsweise eine Festlegung des Dichtungsbands in dem Zwischenraum und/oder ein Versperren eines Durchgangs durch den Zwischenraum, aufweisen. Nichtsdestotrotz kann auch der Funktionsbereich dämmende Eigenschaften aufweisen. Die unterschiedlichen Eigenschaften des erste EPDM-Moosgummis und des zweite EPDM-Moosgummis können beispielsweise eine unterschiedliche Dichte, Dehnung, Zugfestigkeit, Elastizität, Wärmeleitfähigkeit, Härte, Druckverformungsrest bei 100°C, Druckverformungsrest bei -25°C, Zugfestigkeit und/oder Dehnung sein. Insbesondere kann die Dichte des Funktionsbereichs um einen Faktor im Bereich von 2 bis 5, insbesondere in einem Bereich von 3 bis 4,5, höher sein als die des Dämmbereichs. Insbesondere kann bei dem zweiten EPDM-Moosgummi die Dehnung, Zugfestigkeit und Elastizität vernachlässigbar sein. Wohingegen bei dem ersten EPDM-Moosgummi die genannten Eigenschaften einen bestimmten Mindestwert erreichen sollen. Somit kann der Funktionsbereich seine Hauptfunktion, nämlich das Dichtungsband an einer gewünschten Position zu halten, vorteilhaft erfüllt werden. Wohingegen der Dämmbereich seine Hauptfunktion, nämlich eine dämmende bzw. isolierende Wirkung bereitzustellen, vorteilhaft erfüllen kann. Insbesondere kann das erste Moosgummi eine Dehnung von größer als 100% aufweisen. Demgegenüber kann das zweite Moosgummi eine Dehnung in einem Bereich von 0 bis 200% aufweisen. Dabei kann die Dehnung eine relative Längenänderung (d.h. eine Verlängerung oder eine Verkürzung) eines Körpers unter Belastung sein relativ zu einem Zustand ohne Belastung. Das erste Moosgummi und das zweite Moosgummi können beispielsweise während einem Herstellungsprozess miteinander verbunden werden. So kann das Dichtungsband beispielsweise durch einen Koextrusionsprozess hergestellt werden. Dabei kann das erste Moosgummi und das zweite Moosgummi vor einem Verlassen einer Profildüse, die den gewünschten Querschnitt des Dichtungsbands festlegt, zusammengeführt werden. Die Profildüse kann dann die Form des Funktionsbereichs und des Dämmbereichs definieren. Erfindungsgemäß ist es also möglich, ein Dichtungsband bereitzustellen, das aus zwei unterschiedlichen Moosgummis gebildet ist, sodass der Funktionsbereich spezielle Eigenschaften aufweist und damit Funktionen, wie beispielsweise ein Festlegen des Dichtungsbands und/oder einen im Wesentlichen luftdichten Abschluss des Zwischenraums bereitstellen kann, wohingegen der Dämmbereich Eigenschaften aufweist und damit Funktionen wie Dämpfung und Dämmung bereitstellen kann. Folglich kann das erfindungsgemäße Dichtungsband bereitgestellt werden, das die zwei sich widersprechenden Eigenschaften, mechanische Festigkeit und Beständigkeit sowie verbesserte Dämmeigenschaften durch weniger festes Material, in einem Dichtungsband realisiert. Ferner kann der Dämmbereich aufgrund der Fokussierung auf seine speziellen Eigenschaften, einfacher und damit kostengünstiger ausgeführt sein kann.This object is achieved with a sealing tape according to claim 1 and a manufacturing method according to claim 11. Further advantages and features of the present invention result from the dependent claims. According to the invention, a sealing strip is provided for sealing an intermediate space between a first component and a second component, in particular for windows or doors, with a cross-section that is essentially constant along a profile sheet or profile direction (A), the sealing strip being in a sectional plane lying transversely to the profile sheet a functional area formed from a first EPDM cellular rubber and an insulating area (which can also be referred to as an insulating area) formed from a second EPDM cellular rubber, the first EPDM cellular rubber and the second EPDM cellular rubber having different properties. The sealing strip can be a strand-like body, which has its greatest extension along or parallel to the profile sheet. Along this extension or profile sheet, the sealing strip can preferably have a constant cross section or a constant cross-section distribution in the functional area and in the insulating area. The wording "essentially constant cross-section" includes smaller local deviations, such as notches or incisions, which can be made at periodic intervals along the profile sheet on the sealing strip. These can serve to improve the ability of the sealing tape to be laid in corners. The first component can be a window sash, for example, whereas the second component can be a frame, in particular a blind frame or window frame, in which the window sash is held. Furthermore, the first component can be a door leaf and the second component can be a door frame. In addition, the first component can be a window sash and the second component can be a pane of glass held by the window sash. The sealing tape can bring about damping and/or insulation by sealing the intermediate space. Insulation can prevent or limit the propagation of energy (ie heat or sound). Thus, an insulating effect can be achieved. In contrast, damping can be a conversion of kinetic energy into another, no longer relevant form of energy (ie energy dissipation can be achieved). For example, when sound is insulated, sound transmission can be prevented by reflection. On the other hand, when the sound is dampened, the sound energy can be converted into heat. The following is not expressly distinguish between insulation and damping, since both effects can be caused by the same characteristics. Both terms are therefore to be regarded as synonymous with one another in the following. EPDM (abbreviated ethylene-propylene-diene; M group) includes terpolymers of ethylene, propylene and an unspecified diene. EPDM is one of the synthetic rubbers with a saturated main chain (according to DIN ISO 1629: M group). EPDM rubbers can have double bonds in the side chains and can therefore be sulfur vulcanizable. The use of EPDM is advantageous because EPDM has high weather and ozone resistance as well as high thermal stability. It also has an advantageous chemical resistance to polar media (such as water or alcohol). In addition, EPDM only has a low impact on the environment during production, processing and use, which is why it also meets the latest environmental standards. Furthermore, EPDM is characterized by favorable processability and low material costs. Furthermore, a sufficient permanent elasticity of EPDM is to be mentioned as an advantageous property for a sealing strip in the sense of the present invention. According to the invention, the EPDM is in the form of foam rubber. The foam rubber can be a largely closed-pore and elastic foam and belong to the pore rubbers. The sponge rubber can be produced from EPDM with the addition of propellant gases. Sponge rubber can be embossed EPDM, for example. The manufacturing process of the first cellular rubber for the functional area can differ from the manufacturing process of the second cellular rubber for the insulating area, so that, for example, a cellular rubber with a larger pore space is provided in the insulating area. In general, foam rubber is characterized by its advantageous thermal insulation properties. It is particularly advantageous that the entire functional area and insulating area are made exclusively of foam rubber. The insulating area can be arranged in the intermediate space such that it faces an outside (ie, for example, a side exposed to the environment) of the first and the second component. The insulating area can have mainly insulating properties. In contrast, the functional area can face an inside of the first and the second component and mainly have mechanical properties such as locking the sealing tape in the gap and/or blocking a passage through the gap. Nevertheless, the functional area can also have insulating properties. The different properties of the first EPDM sponge rubber and the second EPDM sponge rubber can be, for example, a different density, elongation, tensile strength, elasticity, thermal conductivity, hardness, compression set at 100° C., compression set at -25° C., tensile strength and/or elongation. In particular, the density of the functional area can be higher than that of the insulating area by a factor in the range from 2 to 5, in particular in a range from 3 to 4.5. In particular, for the second EPDM sponge rubber, the elongation, tensile strength and resilience can be negligible. In contrast, with the first EPDM foam rubber, the properties mentioned should reach a certain minimum value. Thus, the functional area can advantageously fulfill its main function, namely to hold the sealing tape at a desired position. In contrast, the insulating area can advantageously fulfill its main function, namely providing an insulating or isolating effect. In particular, the first sponge rubber can have an elongation of more than 100%. In contrast, the second sponge rubber can have an elongation in a range from 0 to 200%. In this context, the elongation can be a relative change in length (ie an elongation or a shortening) of a body under load relative to a state without load. The first cellular rubber and the second cellular rubber can be connected to one another during a manufacturing process, for example. For example, the sealing strip can be produced by a coextrusion process. In this case, the first foam rubber and the second foam rubber can be brought together before leaving a profile nozzle, which defines the desired cross section of the sealing strip. The profile nozzle can then define the shape of the functional area and the insulating area. According to the invention, it is therefore possible to provide a sealing strip that is formed from two different foam rubbers, so that the functional area has special properties and can thus provide functions such as fixing the sealing strip and/or a substantially airtight seal of the intermediate space, whereas the insulating area has properties and thus Functions such as cushioning and insulation can provide. Consequently, the sealing tape according to the invention can be provided, which realizes the two contradictory properties, mechanical strength and durability as well as improved insulating properties by less strong material, in one sealing tape. Furthermore, due to the focus on its special properties, the insulation area can be designed more simply and thus more cost-effectively.
Vorzugsweise kann der Funktionsbereich einen Befestigungsabschnitt aufweisen, mit welchem das Dichtungsband an dem ersten Bauteil oder dem zweiten Bauteil festlegbar ist. Der Befestigungsabschnitt kann dazu ausgestaltet sein, mit einem an dem ersten oder dem zweiten Bauteil ausgebildeten komplementären Element in Eingriff gebracht zu werden, wobei der Befestigungsabschnitt vorzugsweise formschlüssig und/oder kraftschlüssig in dem komplementäre Element, insbesondere in einem Schlitz oder einer Fuge, gehalten werden kann. Ferner kann der Befestigungsabschnitt widerhakenförmig ausgebildet sein, so dass er einen sicheren und dauerhaften Halt an dem komplementären Element des ersten oder des zweiten Bauteils sicherstellt. Ferner kann der Funktionsbereich einen Stützabschnitt aufweisen, der sich an dem ersten oder dem zweiten Bauteil abstützt. Vorzugsweise stützt sich der Stützabschnitt an demselben Bauteil ab, an dem auch der Befestigungsabschnitt festgelegt ist. Zweckmäßig kann der Stützabschnitt und der Befestigungsabschnitt so angeordnet sein, dass der Funktionsbereich in einer gespannten Weise an dem ersten oder dem zweiten Bauteil festgelegt ist. Mit anderen Worten kann der Befestigungsabschnitt den Funktionsbereich widerhakenartig festlegen, wohingegen der Stützabschnitt gegen das erste oder das zweite Bauteil drückt. Die dazu notwendige Druckkraft kann durch die geometrische Form des Stützabschnitts und/oder durch Materialeigenschaften des Stützabschnitts bewirkt werden. Somit kann eine sichere Festlegung des Funktionsbereichs und damit des gesamten Dichtungsbands erreicht werden, ohne dass das Dichtungsband wackelt oder verrutschen kann. Ferner können somit Toleranzen beim Herstellungsprozess des Funktionsbereichs ausgeglichen werden und trotzdem ein sicherer Halt des Dichtungsbands erzielt werden. Darüber hinaus kann sichergestellt werden, dass das Dichtungsband in engem Kontakt mit dem ersten oder dem zweiten Bauteil ist, damit Wärmebrücken zuverlässig unterbrochen werden können und somit die Dämmleistung sichergestellt ist. Zusätzlich oder alternativ kann ein Stützabschnitt an dem Dämmbereich aus dem ersten Moosgummi oder dem zweiten Moosgummi ausgebildet sein.The functional area can preferably have a fastening section with which the sealing strip can be fixed to the first component or the second component. The fastening section can be designed to be brought into engagement with a complementary element formed on the first or the second component, it being possible for the fastening section to be held in the complementary element, in particular in a slot or a joint, preferably in a positive and/or non-positive manner . Furthermore, the fastening section can be designed in the form of a barb, so that it ensures a secure and permanent hold on the complementary element of the first or the second component. Furthermore, the functional area can have a support section which is supported on the first or the second component. The support section is preferably supported on the same component on which the fastening section is also fixed. The support section and the fastening section can expediently be arranged in such a way that the functional area is fixed in a tensioned manner on the first or the second component. In other words, the fastening section can fix the functional area in the manner of a barb, whereas the support section presses against the first or the second component. The compressive force required for this can be brought about by the geometric shape of the support section and/or by the material properties of the support section. In this way, the functional area and thus the entire sealing strip can be securely fixed without the sealing strip wobbling or being able to slip. Furthermore, tolerances in the manufacturing process of the functional area can thus be compensated for and a secure hold of the sealing strip can nevertheless be achieved. In addition, it can be ensured that the sealing tape is in close contact with the first or the second Component is, so that thermal bridges can be reliably interrupted and thus the insulation performance is ensured. Additionally or alternatively, a support section can be formed on the insulating area from the first foam rubber or the second foam rubber.
Der Funktionsbereich und der Dämmbereich können miteinander verbunden sein, wobei zwischen dem Funktionsbereich und dem Dämmbereich eine Verbindungslinie ausgebildet sein kann. Die Verbindung kann stoffschlüssig vorliegen, beispielsweise indem das Dichtungsband koextrudiert ist. Die Verbindungslinie kann einen Kraftübertragungsabschnitt aufweisen, in welchem sich die Verbindungslinie im Wesentlichen geradlinig erstreckt. Als Kraftübertragungsabschnitt kann dabei vorzugsweise der Abschnitt der Verbindungslinie angesehen werden, über welchen Kraft vom Befestigungsabschnitt in den Dämmbereich mittelbar über bzw. durch den Funktionsbereich übertragen wird. Die geradlinige Erstreckung der Verbindungslinie im Kraftübertragungsabschnitt weist den Vorteil auf, dass Spannungsspitzen im Material sowohl im Funktionsbereich als auch im Dämmbereich und insbesondere im Kontaktbereich der beiden Bereiche vermieden werden können. Der Term im Wesentlichen geradlinig bedeutet im vorliegenden Fall, dass die Verbindungslinie im Kraftübertragungsabschnitt, insbesondere an dessen distalen Enden durchaus kleine Rundungen aufweisen kann, insbesondere um besonders spannungsarme Übergänge zu den benachbarten Bereichen der Verbindungslinie zu erreichen. In einer bevorzugten Ausführungsform ist der Befestigungsabschnitt pfeilförmig ausgebildet, wobei die pfeilförmige Geometrie des Befestigungsabschnitts in eine entsprechende Hinterschneidung an einem Rahmen (als Beispiel des ersten oder zweiten Bauteils) eingreift und einen formschlüssigen und/oder kraftschlüssig Eingriff bilden kann. Der Befestigungsabschnitt kann symmetrisch zu einer Symmetrieline ausgebildet sein. Die Symmetrielinie kann dabei mit Vorteil den Funktionsbereich in zwei gleich große Hälften teilen. Auf diese Weise kann gewährleistet werden, dass die von dem Befestigungsabschnitt übertragene Kraft zu gleichen Teilen auf der rechten und auf der linken Seite des Befestigungsabschnitts in den Funktionsbereich übertragen wird.The functional area and the insulating area can be connected to one another, it being possible for a connecting line to be formed between the functional area and the insulating area. The connection can be materially bonded, for example in that the sealing tape is coextruded. The connecting line can have a force transmission section, in which the connecting line extends essentially in a straight line. The section of the connecting line via which force is transmitted from the fastening section to the insulating area indirectly via or through the functional area can preferably be regarded as the force transmission section. The straight extension of the connecting line in the force transmission section has the advantage that stress peaks in the material can be avoided both in the functional area and in the insulating area and in particular in the contact area of the two areas. In the present case, the term essentially straight means that the connecting line in the force transmission section, in particular at its distal ends, can certainly have small curves, in particular in order to achieve particularly low-stress transitions to the adjacent areas of the connecting line. In a preferred embodiment, the fastening section is arrow-shaped, with the arrow-shaped geometry of the fastening section engaging in a corresponding undercut on a frame (as an example of the first or second component) and being able to form a positive and/or non-positive engagement. The fastening section can be designed symmetrically to a line of symmetry. The line of symmetry can advantageously divide the functional area into two halves of equal size. In this way it can be ensured that the force transmitted by the fastening section is transmitted to the functional area in equal parts on the right and on the left side of the fastening section.
Der Funktionsbereich und/oder der Dämmbereich kann/können einen Vorsprung, insbesondere eine Lippe, aufweisen, der dazu ausgestaltet ist, mit dem ersten oder dem zweiten Bauteil in Kontakt zu kommen. Der Vorsprung kann dazu dienen, eine Verbindung zwischen dem Dichtungsband und dem ersten Bauteil oder dem zweiten Bauteil herzustellen, insbesondere um das Passieren von Gases (insbesondere von Luft) zu vermeiden oder zumindest zu verringern. Durch den Vorsprung kann in zumindest einer Position des ersten und des zweiten Bauteils zueinander bewirkt werden, dass der Zwischenraum mechanisch blockiert ist. Mit anderen Worten kann das Dichtungsband eine Verbindung zwischen dem ersten Bauteil und dem zweiten Bauteil herstellen, die den Zwischenraum durchquert. Mit anderen Worten kann das erste oder das zweite Bauteil mit dem Befestigungsabschnitt in Kontakt sein, wohingegen das andere des ersten oder zweiten Bauteils zumindest mit dem Vorsprung in Kontakt ist. Somit können Wärmebrücken zwischen dem ersten und dem zweiten Bauteil zuverlässig durch das Dichtungsband unterbrochen werden und eine verbesserte Dämmwirkung bereitgestellt werden. Ferner kann der Vorsprung so ausgebildet sein, dass er vorgespannt zur Anlage an das erste oder das zweite Bauteil kommt. Die Vorspannung kann bewirkt werden, indem der Vorsprung so in einer Richtung geneigt oder gebogen ist, dass das erste oder das zweite Bauteil den Vorsprung in einem montierten Zustand des Dichtungsbands relativ zu dem Funktionsbereich zumindest teilweise verlagert, vergleichen mit einem nicht montierten Zustand des Dichtungsbands. Ferner kann der Vorsprung eine elastische Rückstellkraft aufweisen, so dass der Vorsprung bei einer Verlagerung eine Rückstellkraft, die der Verlagerungsrichtung entgegenwirkt, aufbringen kann. Die elastische Rückstellkraft kann durch Materialeigenschaften des jeweiligen Moosgummis und/oder durch eine geometrische Ausformung des Vorsprungs bewirkt werden. Dadurch kann eine sichere Abdichtung des Zwischenraums erreicht werden, da stets eine sichere Anlage des Vorsprungs an dem ersten Bauteil oder dem zweiten Bauteil gewährleistet ist. Bei einer Ausführungsform ist der Vorsprung an dem Funktionsbereich vorgesehen. Bei einer weiteren Ausführungsform ist der Vorsprung an dem Dämmbereich vorgesehen. Es ist auch denkbar, dass jeweils ein Vorsprung an dem Funktionsbereich und dem Dämmbereich vorgesehen ist. Dabei kann der Vorsprung von dem Funktionsbereich und/oder dem Dämmbereich in den Zwischenraum vorstehen. Ferner kann der Dämmbereich und/oder der Funktionsbereich einen Anlageabschnitt aufweisen. Der Vorsprung kann Teil des Anlageabschnitts sein. Der Anlageabschnitt kann wellig ausgebildet sein. Vorzugsweise kann der Anlageabschnitt dazu ausgebildet sein, an dem ersten oder zweiten Bauteil, insbesondere an einer Scheibe, zur Anlage zu kommen. Dabei kann der Anlageabschnitt eine nicht perfekt ebene Fläche zuverlässig kontaktieren, indem sich der wellige Anlageabschnitt an die Form der der Fläche anpasst. Ferner kann der Anlageabschnitt eine im Wesentlichen sinuskurvenförmige Geometrie aufweisen. Besonders bevorzugt weist dabei ein Wellenberg des welligen Anlageabschnitts eine geringere Erstreckung auf als der Vorsprung oder die Vorsprünge. Auf diese Weise kann gewährleistet werden, dass der Vorsprung durch seine größere Erstreckung in Richtung des ersten oder zweiten Bauteils den Anlageabschnitt stets gegen äußere Einflüsse abschirmen kann und so eine besonders makellose Anlage des Anlageabschnitts an dem ersten oder zweiten Bauteil gewährleisten werden kann. Es kann auf diese Weise insbesondere verhindert werden, dass Staubkörner oder Flüssigkeiten in den Bereich zwischen dem Anlageabschnitt und dem ersten oder zweiten Bauteil gelangen.The functional area and/or the insulating area can have a projection, in particular a lip, which is designed to come into contact with the first or the second component. The projection can serve to create a connection between the sealing strip and the first component or the second component, in particular to prevent or at least reduce the passage of gas (in particular air). In at least one position of the first and the second component relative to one another, the protrusion can cause the intermediate space to be mechanically blocked. In other words, the sealing strip can establish a connection between the first component and the second component, which connection traverses the gap. In other words, the first or the second component can be in contact with the fastening portion, whereas the other of the first or the second component is in contact with at least the projection. In this way, thermal bridges between the first and the second component can be reliably interrupted by the sealing strip and an improved insulating effect can be provided. Furthermore, the projection can be designed in such a way that it comes into contact with the first or the second component in a prestressed manner. The pretensioning can be effected by the projection being inclined or bent in a direction such that the first or the second component at least partially displaces the projection relative to the functional area in a mounted state of the sealing strip, compared to an unmounted state of the sealing strip. Furthermore, the projection can have an elastic restoring force, so that the projection can apply a restoring force, which counteracts the direction of displacement, during a displacement. The elastic restoring force can be brought about by material properties of the respective foam rubber and/or by a geometric shape of the projection. As a result, a secure sealing of the intermediate space can be achieved, since secure contact of the projection with the first component or the second component is always guaranteed. In one embodiment, the protrusion is provided on the functional area. In a further embodiment, the projection is provided on the insulating area. It is also conceivable that a projection is provided on the functional area and on the insulating area. In this case, the projection can protrude from the functional area and/or the insulating area into the intermediate space. Furthermore, the Insulating area and/or the functional area have a contact section. The projection can be part of the abutment section. The contact section can be wavy. The contact section can preferably be designed to come into contact with the first or second component, in particular with a pane. In this case, the contact section can reliably contact a surface that is not perfectly flat, in that the wavy contact section adapts to the shape of the surface. Furthermore, the abutment section can have a substantially sinusoidal geometry. A wave crest of the wavy contact section particularly preferably has a smaller extension than the projection or projections. In this way it can be ensured that the projection can always shield the contact section against external influences due to its greater extension in the direction of the first or second component and thus a particularly flawless contact of the contact section with the first or second component can be ensured. In this way, it is possible in particular to prevent grains of dust or liquids from getting into the area between the contact section and the first or second component.
Der erste EPDM-Moosgummi kann eine Dichte in einem Bereich von 0,1 bis 2,0 g/cm3, insbesondere von 0,4 bis 1,5 g/cm3, aufweisen. Dieser Dichtebereich hat sich als vorteilhaft herausgestellt, da dabei eine ausreichend hohe Widerstandsfähigkeit gegen physikalische und chemische Einflüsse, wie Stöße, Schwingungen und Temperaturunterschiede erreicht werden kann und gleichzeitig eine grundlegende Dämmfunktion sichergestellt werden kann. Dies ist insbesondere Vorteilhaft, da der Funktionsbereich, der aus dem ersten Moosgummi gebildet ist, im Vergleich zum Dämmbereich höheren mechanischen Belastungen ausgesetzt sein kann. Nichtsdestotrotz kann der Funktionsbereich durch die Wahl des Dichtebereichs eine gewisse Dichtfunktion bereitstellen, so dass das Dichtungsband insgesamt eine verbesserte Dichtwirkung bereitstellen kann.The first EPDM sponge rubber can have a density in a range from 0.1 to 2.0 g/cm 3 , in particular from 0.4 to 1.5 g/cm 3 . This density range has turned out to be advantageous because a sufficiently high resistance to physical and chemical influences, such as impacts, vibrations and temperature differences can be achieved and at the same time a basic insulating function can be ensured. This is particularly advantageous since the functional area, which is formed from the first cellular rubber, can be exposed to higher mechanical loads than the insulating area. Nevertheless, the functional area can provide a certain sealing function through the selection of the density area, so that the sealing tape can provide an improved sealing effect overall.
Das zweiten EPDM-Moosgummi kann eine Dichte in einem Bereich von 0,05 bis 1,0 g/cm3, insbesondere von 0,1 bis 0,4 g/cm3, aufweisen. In diesem Bereich ist ein sehr hoher Dämmeffekt erreichbar, sodass der Dämmbereich für eine hohe Dämmung des Dichtungsbands verantwortlich ist. Andere Materialeigenschaften, wie beispielsweise die mechanische Belastbarkeit, sind bei dem Dämmbereich zu vernachlässigen, da bei dem erfindungsgemäßen Dichtungsband der Funktionsbereich diese Funktionen übernimmt.The second EPDM sponge rubber can have a density in a range from 0.05 to 1.0 g/cm 3 , in particular from 0.1 to 0.4 g/cm 3 . A very high insulating effect can be achieved in this area, so that the insulating area is responsible for a high degree of insulation of the sealing tape. other material properties, such as, for example, the mechanical resilience, are negligible in the insulating area, since the functional area assumes these functions in the sealing tape according to the invention.
Der Funktionsbereich und/oder der Dichtbereich kann/können zumindest einen Hohlraum definieren, der sich in der Profilbahn erstreckt. Mit anderen Worten kann/können der Funktionsbereich und/oder der Dämmbereich im Querschnitt des Dichtungsbands zumindest einen Hohlraum umgeben bzw. kann zumindest ein Hohlraum im Funktionsbereich und/oder Dämmbereich vorgesehen sein. Dabei kann der Hohlraum so ausgestaltet sein, dass eine geometrische Stabilität des Dichtungsbands insgesamt erhöht ist. Ferner kann der Hohlraum die Dämmeigenschaften verbessern. Somit kann zum einen die Stabilität und zum anderen die Dichtungseigenschaft des Dichtungsbands durch den Hohlraum verbessert werden. Insbesondere kann der Hohlraum im Querschnitt eine im wesentliche Rechteckige Form aufweisen. Ferner können auch mehre Hohlräume vorgesehen sein, insbesondere können fünf Hohlräume vorgesehen sein. Zweckmäßig kann der Funktionsbereich zwei Hohlräume aufweisen, wobei einer davon vorzugsweise in dem Befestigungsabschnitt angeordnet ist. Der Dämmbereich kann drei Hohlräume aufweisen. Bei einer alternativen Ausführungsform können fünf Hohlräume in dem Dämmbereich vorgesehen sein.The functional area and/or the sealing area can define at least one cavity that extends in the profile sheet. In other words, the functional area and/or the insulating area can surround at least one cavity in the cross section of the sealing strip or at least one cavity can be provided in the functional area and/or insulating area. The hollow space can be designed in such a way that the overall geometric stability of the sealing strip is increased. Furthermore, the cavity can improve the insulating properties. Thus, on the one hand, the stability and, on the other hand, the sealing property of the sealing strip can be improved by the hollow space. In particular, the cavity can have an essentially rectangular shape in cross section. Furthermore, several cavities can also be provided, in particular five cavities can be provided. The functional area can expediently have two cavities, one of which is preferably arranged in the fastening section. The insulation area can have three cavities. In an alternative embodiment, five cavities can be provided in the insulation area.
Der erste EPDM-Moosgummi kann eine Härte von größer als 40 Sh A und/oder der zweite EPDM-Moosgummi kann eine Härte von kleiner als 40 Sh A aufweisen. Mit dieser Härte kann der Funktionsbereich seine Funktion (d.h. das Dichtungsband zu halten und eine Abdichtung zwischen dem ersten Bauteil und dem zweiten Bauteil bereit zu stellen) bereitstellen, und gleichzeitig ausreichend widerstandsfähig gegen Verschleiß sein. Demgegenüber genügt es bei dem Dämmbereich, dass dieser eine geringere Härte aufweist, da die Hauptfunktion des Dämmbereichs das Dämmen ist wozu eine Härte von > 40 Sh A ausreicht.The first EPDM sponge rubber may have a hardness greater than 40 Sh A and/or the second EPDM sponge rubber may have a hardness less than 40 Sh A. With this hardness, the functional area can provide its function (i.e. holding the sealing strip and providing a seal between the first component and the second component) while being sufficiently resistant to wear. In contrast, it is sufficient for the insulation area to have a lower hardness, since the main function of the insulation area is insulation, for which a hardness of > 40 Sh A is sufficient.
Der erste EPDM-Moosgummi kann eine Zugfestigkeit von größer als 5 N/mm2 und/oder der zweite EPDM-Moosgummi kann eine Zugfestigkeit in einem Bereich von 0 bis 5 N/mm2 aufweisen. Somit kann die mechanische Belastbarkeit des Funktionsbereichs und des Dämmbereichs auf die jeweils zugeordnete Hauptfunktion ausgelegt sein. Ferner kann das Rückstellvermögen des ersten Moosgummis circa 1,5-3-mal des Rückstellvermögens des zweiten Moosgummis sein. Das bevorzugte Verhältnis des Rückstellvermögens gewährleistet, dass der Funktionsbereich, welcher im Einsatz die höheren, oft auch schwankenden Kräfte aufnehmen muss, die gleiche Lebensdauer erreicht wie der Dämmbereich. Somit kann die Verlässlichkeit des Dichtungsbands insgesamt gesteigert werden.The first EPDM cellular rubber can have a tensile strength greater than 5 N/mm 2 and/or the second EPDM cellular rubber can have a tensile strength in a range from 0 to 5 N/mm 2 . Thus, the mechanical resilience of the Functional area and the insulating area can be designed for the respectively assigned main function. Furthermore, the resilience of the first sponge rubber can be about 1.5-3 times the resilience of the second sponge rubber. The preferred ratio of the resilience ensures that the functional area, which has to absorb the higher, often fluctuating forces during use, achieves the same service life as the insulating area. Thus, the reliability of the sealing tape as a whole can be increased.
Der erste EPDM-Moosgummi kann eine Wärmeleitfähigkeit in einem Bereich von 0,05 bis 0,5 W/(mK), insbesondere von 0,08 bis 0,35 W/(mK), und/oder der zweite EPDM-Moosgummi kann eine Wärmeleitfähigkeit in einem Bereich von 0,01 bis 1,0 W/(mK), insbesondere von 0,01 bis 0,08 W/(mK), aufweisen. Die Wärmeleitfähigkeit, auch Wärmeleitkoeffizient genannt, kann dabei eine Stoffeigenschaft sein, die den Wärmestrom durch das erste Moosgummi und das zweite Moosgummi auf Grund der Wärmeleitung bestimmt. An der Wärmeleitfähigkeit lässt sich ablesen, wie gut ein Material Wärme leitet oder wie gut es sich zur Wärmedämmung eignet. Je niedriger der Wert der Wärmeleitfähigkeit, desto besser ist die Wärmedämmung.The first EPDM sponge rubber can have a thermal conductivity in a range from 0.05 to 0.5 W/(mK), in particular from 0.08 to 0.35 W/(mK), and/or the second EPDM sponge rubber can have a Have thermal conductivity in a range from 0.01 to 1.0 W/(mK), in particular from 0.01 to 0.08 W/(mK). The thermal conductivity, also called thermal conductivity coefficient, can be a material property that determines the flow of heat through the first foam rubber and the second foam rubber due to heat conduction. The thermal conductivity shows how well a material conducts heat or how well it is suitable for thermal insulation. The lower the value of thermal conductivity, the better the thermal insulation.
Gemäß einem weiteren Aspekt der vorliegenden Erfindung wird ein Verfahren zum Herstellen des obigen Dichtungsbands bereitgestellt. Dabei kann das erfindungsgemäße Dichtungsband durch einen Schritt der Koextrusion gebildet werden, so dass das erste Moosgummi und das zweite Moosgummi zusammengeführt werden, um das Dichtungsband zu bilden. Vorzugsweise können somit das erste EPDM-Mosgummi und das zweite EPDM-Moosgummi miteinander ausgebildet werden. Hierdurch lässt sich insbesondere eine Kostenersparnis erzielen, da die Herstellung eines Dichtungsbands durch Koextrusion besonders zügig geht und auf einfache Weise eine besonders feste Verbindung zwischen dem ersten EPDM-Moosgummi und dem zweiten EPDM-Moosgummi hergestellt werden kann. Darüber hinaus ist eine Zeitersparnis bei der Herstellung erreichbar, wodurch wiederrum Fertigungskosten eingespart werden können. Insbesondere die konstante Ausbildung des Funktionsbereichs und des Dämmbereichs entlang der Profilbahn begünstigt dabei die Herstellung des Dichtungsbands durch Koextrusion, da besonders einfache Geometrien an beiden Extrusionsmatrizen vorgesehen werden können. Durch Koextrudieren ist eine besonders hohe Fertigkeit der Verbindung des Funktionsbereichs und des Dämmbereichs erreichbar. Besonders die sehr gute Vernetzung beider Moosgummis trägt hierzu bei.According to another aspect of the present invention, there is provided a method of manufacturing the above sealing tape. In this case, the sealing strip according to the invention can be formed by a step of coextrusion, so that the first cellular rubber and the second cellular rubber are brought together to form the sealing strip. The first EPDM cellular rubber and the second EPDM cellular rubber can thus preferably be formed together. In this way, a cost saving can be achieved in particular, since the production of a sealing strip by coextrusion is particularly quick and a particularly strong connection between the first EPDM cellular rubber and the second EPDM cellular rubber can be produced in a simple manner. In addition, time can be saved during production, which in turn can save production costs. In particular, the constant formation of the functional area and the insulating area along the profile sheet favors the production of the sealing strip Co-extrusion, since particularly simple geometries can be provided on both extrusion dies. A particularly high level of skill in connecting the functional area and the insulating area can be achieved by co-extrusion. The very good cross-linking of both foam rubbers contributes in particular to this.
Weitere Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung mit Bezug auf beigefügte Figuren zu ausgewählten bevorzugten Ausführungsbeispielen. Es versteht sich, dass einzelne, in nur einer der Figuren gezeigte Merkmale auch in anderen Ausführungsformen Anwendung finden können, in denen diese nicht explizit dargestellt sind. Es zeigen:
- Figur 1
- ein Profil des Dichtungsbands gemäß einer Ausführungsform der vorliegenden Erfindung,
Figur 2- ein Profil des Dichtungsbands gemäß einer weiteren Ausführungsform der vorliegenden Erfindung,
Figur 3- ein Profil des Dichtungsbands gemäß einer weiteren Ausführungsform der vorliegenden Erfindung, und
Figur 4- eine schematische dreidimensionale Ansicht eines Dichtungsbands gemäß der Ausführungsform der vorliegenden Erfindung, wie es von einer Rolle abgewickelt wird.
- figure 1
- a profile of the sealing tape according to an embodiment of the present invention,
- figure 2
- a profile of the sealing strip according to another embodiment of the present invention,
- figure 3
- a profile of the sealing tape according to another embodiment of the present invention, and
- figure 4
- Figure 12 is a schematic three-dimensional view of a sealing tape according to the embodiment of the present invention as it is unwound from a roll.
In
In
In
- 11
- Dichtungsbandsealing tape
- 22
- Funktionsbereichfunctional area
- 33
- Dämmbereich (Isolationsbereich)insulation area
- 44
- Befestigungsabschnittattachment section
- 55
- Vorsprung (Lippe)protrusion (lip)
- 66
- Hohlraumcavity
- 77
- Stützabschnittsupport section
- 88th
- Hakenabschnitthook section
- 99
- Anlageabschnittinvestment section
Claims (11)
- Seal strip (1) for sealing an interspace between a first and a second part, in particular for windows and doorshaving an essentially constant cross section along a profile track (A),wherein the seal strip (1) has a first functional area (2) formed by EPDM sponge rubber in a cutting plane lying transversely to the profile track (A), and wherein the seal strip (1) has a second EPDM sponge rubber insulating area (3)wherein the first EPDM sponge rubber and the second EPDM sponge rubber have different characteristics.
- Seal strip (1) according to claim 1, wherein the functional area (2) comprises a fastening portion (4) with which the seal strip (1) is fastened to the first part or the second part.
- Seal strip (1) accoring to any of the previous claims, wherein the funcional area (2) and the insulating area (3) are connected to each other, wherein a connecting line is preferably formed between the functional area (2) and the insulating area (3).
- Seal strip (1) according to one of the previous claims, wherein the functional area (2) and/or insulating area (3) has/have a protrusion (5), especially a lip, which is configured to come in contact with the first or the second part.
- Seal strip (1) according to one of the previous claims, wherein the first EPDM sponge rubber has a density in a range from 0.1 to 2.0 g/cm3, especially of 0.4 to 1.5 g/cm3.
- Seal strip (1) according to one of the previous claims, wherein the second EPDM sponge rubber has a density in a range from 0.05 to 1.0 g/cm3, especially of 1.0 to 4.0 g/cm3.
- Seal strip (1) according to one of the previous claims, wherein the functional area (2) and/or the insulating area (3) define/defines at least one cavity extending in the profile track (A).
- Seal strip (1) according to one of the previous claims, wherein the first EPDM sponge rubber has a hardness of more than 40 Sh A and/or the second EPDM sponge rubber has a hardness of less than 40 Sh A.
- Seal strip (1) according to one of the previous claims, wherein the first EPDM sponge rubber has a tensile strength of more than 5 N/mm2 and/or the second EPDM sponge rubber has a tensile strength in a range from 0 to 5 N/mm2.
- Seal strip (1) according to one of the previous claims, wherein the first EPDM sponge rubber has a thermal conductivity in a range from 0.05 to 0.5 W/(mK), especially from 0.08 to 0.35 W/(mK), and/or the second EPDM sponge rubber has a thermal conductivity from 0.01 to 1.0 W/(mK), especially from 0.01 to 0.08 W/(mK).
- Method of manufacturing a seal strip (1) according to any of the claims 1 to 10.
Applications Claiming Priority (1)
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DE102020106485.3A DE102020106485A1 (en) | 2020-03-10 | 2020-03-10 | Sealing tape and process for its manufacture |
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EP3879062A1 EP3879062A1 (en) | 2021-09-15 |
EP3879062B1 true EP3879062B1 (en) | 2023-01-18 |
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EP21160365.9A Active EP3879062B1 (en) | 2020-03-10 | 2021-03-03 | Seal strip and method of manufacturing the same |
Country Status (4)
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EP (1) | EP3879062B1 (en) |
DE (2) | DE102020106485A1 (en) |
ES (1) | ES2940831T3 (en) |
PL (1) | PL3879062T3 (en) |
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DE102022103216A1 (en) | 2022-02-11 | 2023-08-17 | Cqlt Saargummi Technologies S.À.R.L. | Sealing or edge protection profile, method for its production and extrusion tool |
WO2023208461A1 (en) * | 2022-04-27 | 2023-11-02 | Semperit Ag Holding | Highly thermally insulating sealing strip |
DE102022119349A1 (en) | 2022-08-02 | 2024-02-08 | Semperit Ag Holding | Highly thermally insulating profile seal |
Citations (4)
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DE29813471U1 (en) | 1997-07-31 | 1998-11-12 | Vitamol Ltd., Bolton | Glass seal |
DE202008004547U1 (en) | 2008-03-28 | 2009-08-06 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt | Elongated seal, in particular sealing cord |
EP2166190A2 (en) | 2008-07-23 | 2010-03-24 | Wolfgang Bartelt | Seal profile band, in particular facade seal belt |
CN110576728A (en) | 2019-09-18 | 2019-12-17 | 上海荣南科技有限公司 | Automobile skylight sealing strip with partition structure |
Family Cites Families (5)
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DE3716214A1 (en) * | 1987-05-14 | 1988-12-01 | Metzeler Gmbh | STRANDED SEALING PROFILE |
DE4326115A1 (en) * | 1993-08-04 | 1995-02-09 | Hubert Funk | Profile seal for windows, and process and apparatus for fitting it |
CA2801006C (en) | 2010-06-03 | 2019-07-16 | Cooper-Standard Automotive Inc. | Method of formulating low gravity sponge rubber for automotive weatherstrips |
DE202010008921U1 (en) | 2010-10-28 | 2010-12-30 | SCHÜCO International KG | Center seal for highly thermally insulated windows or doors |
DE102014117560B4 (en) | 2014-11-28 | 2022-09-15 | Semperit Ag Holding | Sealing profile, window system and arrangement of a sealing profile |
-
2020
- 2020-03-10 DE DE102020106485.3A patent/DE102020106485A1/en active Pending
-
2021
- 2021-03-03 EP EP21160365.9A patent/EP3879062B1/en active Active
- 2021-03-03 PL PL21160365.9T patent/PL3879062T3/en unknown
- 2021-03-03 DE DE202021004268.7U patent/DE202021004268U1/en active Active
- 2021-03-03 ES ES21160365T patent/ES2940831T3/en active Active
Patent Citations (5)
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DE29813471U1 (en) | 1997-07-31 | 1998-11-12 | Vitamol Ltd., Bolton | Glass seal |
GB2327972A (en) | 1997-07-31 | 1999-02-10 | Vitamol Limited | A seal which may be used as a glazing gasket or as a weatherstrip |
DE202008004547U1 (en) | 2008-03-28 | 2009-08-06 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt | Elongated seal, in particular sealing cord |
EP2166190A2 (en) | 2008-07-23 | 2010-03-24 | Wolfgang Bartelt | Seal profile band, in particular facade seal belt |
CN110576728A (en) | 2019-09-18 | 2019-12-17 | 上海荣南科技有限公司 | Automobile skylight sealing strip with partition structure |
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ANONYMOUS: "Automobil Produktion", AUTOMOBIL PRODUKTION, 1 September 2011 (2011-09-01), XP093167637 |
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DE202021004268U1 (en) | 2023-05-08 |
DE102020106485A1 (en) | 2021-09-16 |
PL3879062T3 (en) | 2023-05-08 |
EP3879062A1 (en) | 2021-09-15 |
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