Sealing strips

Abstract

A sealing strip comprises an installation base element and a sealing element. The mounting base element is coupled to a flange on the periphery edge of a panel of an automobile and / or on the periphery edge of an opening in the automobile body. The sealing element is integrally formed with the mounting base element and elastically contacts the other periphery edge of the opening or panel when the panel is in a closed position. The sealing element has a coating film formed on its surface. The coating film is provided by adding a filler to a base. The filler has an average particle size in the range of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation.

Description

BACKGROUND OF THE INVENTION

[0001] The present invention relates to a sealing strip coupled to a flange of a circumferential edge of a plate and / or a circumferential edge of an opening in the body of an automobile. The plate comprises, for example, a side door, a tailgate, a trunk lid, or a hood. When the plate is in a closed position, the sealing strip seals a gap between the plate and the automobile body by forming elastic contact with the automobile body or the plate.

[0002] The in Fig. 1 and Fig.The sealing strip 200 shown (door sealing strip) was frequently used. The sealing strip 200 comprises a mounting base element 10 and a hollow sealing element 20. The mounting base element 10 is coupled to a flange on a circumferential edge of a panel 1, which is, for example, a car door. The hollow sealing element 20 is integrally formed with the mounting base element 10 and has a coating film 50 formed on its surface. The hollow sealing element 20 comes into elastic contact with a circumferential edge of an opening in a car body 2 when the panel 1 is in the closed position (see, for example, Japanese Patent No. 7418641).

[0003] To improve noise reduction performance, the addition of a filler, such as silicone particles or polyurethane gel particles, to the coating film 50 on the sealing strip 200 is known (see Japanese patent applications nos. 2009-1710 and 2000-313234). The noise is a squeaking sound caused by the sliding contact between the vehicle body and the sealing strip under the vibrations that occur while the vehicle is in motion. This noise tends to be generated when the sealing strip is slightly wet in the rain, a condition known as "semi-wet," and is one of the causes of the deterioration of vehicle quality. The addition of the filler improves the sliding properties and reduces the generation of the squeaking sound.

[0004] As can be seen from Table 1, the filler with a larger particle size improves noise reduction performance, but tends to be inferior to a filler with a smaller particle size in waterproofing performance.

[0005] This is possibly because a small space is created between the filler on the surface of the coating film 50 and the car body 2 while the plate 1 is in the closed position and the sealing strip 200 is in elastic contact with the car body 2. More precisely, as in Fig. As shown in Figure 3A, the filler with the smaller particle size creates a smaller space, so a smaller amount of water enters the smaller space, and this filler is superior to the filler with the larger particle size in waterproofing performance. As shown in Fig.As shown in Figure 3B, the filler with the larger particle size creates a larger space on the other side and is inferior to the filler with the smaller particle size in waterproofing performance. [Table 1] Filler particles in the coating film Noise reduction performance* Waterproofing performance no × ◯ smaller particle size △ △ larger particle size ◯ × *Squeaking under semi-wet conditions

[0006] Conventional sealing elements, in which the coating film is formed with the filler on the surface, suffer from the conflict of objectives between noise reduction performance and water tightness performance.

[0007] To solve the above problems, it is an object of the present invention to provide a sealing strip that would maintain both the water tightness performance and the noise reduction performance when the coating film formed on the surface of the sealing element comprises the filler. SUMMARY OF THE INVENTION

[0008] To achieve the above objective, one aspect of the present invention provides a sealing strip (200). The sealing strip (200) comprises a mounting base element (10), a sealing element (20), and a coating film (50).

[0009] The mounting base element (10) can be coupled to a flange of a circumferential edge of a plate (1) of an automobile and / or a circumferential edge of an opening of an automobile body (2) of the automobile.

[0010] The sealing element (20) is integrally formed (cast) with the mounting base element (10). The sealing element (20) enters into elastic contact with the other circumferential edge of the opening or the circumferential edge of the plate (1) when the plate (1) is in a closed position. The sealing element (20) has a coating film (50) formed on its surface.

[0011] The coating film (50) is provided by adding a filler (70) to a base (60). The filler (70) has an average particle size in the range of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation.

[0012] Another aspect of the present invention provides a sealing strip (200). The sealing strip (200) comprises a mounting base element (10), a sealing element (20), and a coating film (50).

[0013] The mounting base element (10) is coupled to a flange of a circumferential edge of a plate (1) of an automobile and / or a circumferential edge of an opening of an automobile body (2) of the automobile.

[0014] The sealing element (20) is integrally formed with the mounting base element (10). The sealing element (20) enters into elastic contact with the other circumferential edge of the opening or the circumferential edge of the plate (1) when the plate (1) is in a closed position. The sealing element (20) has a coating film (50) formed on its surface.

[0015] The coating film (50) is provided by adding a filler (70) to a base (60). The filler (70) has particles of different sizes. The filler (70(70A)) that protrudes most from the base (60) has a particle size in the range of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation.

[0016] Another aspect of the present invention provides a sealing strip (200). The sealing strip (200) comprises a mounting base element (10), a sealing element (20), and a coating film (50).

[0017] The mounting base element (10) is coupled to a flange of a circumferential edge of a plate (1) of an automobile and / or a circumferential edge of an opening of an automobile body (2) of the automobile.

[0018] The sealing element (20) is integrally formed with the mounting base element (10). The sealing element (20) enters into elastic contact with the other circumferential edge of the opening or the circumferential edge of the plate (1) when the plate (1) is in a closed position. The sealing element (20) has a coating film (50) formed on its surface.

[0019] The coating film (50) is provided by adding a filler (70) to a base (60). The filler (70) has particles of various sizes. The filler (70) contained in the base (60) has a maximum particle size of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation.

[0020] Another aspect of the present invention provides a sealing strip (200). The sealing strip (200) comprises a mounting base element (10), a sealing element (20), and a coating film (50).

[0021] The mounting base element (10) is coupled to a flange of a circumferential edge of a plate (1) of an automobile and / or a circumferential edge of an opening of an automobile body (2) of the automobile.

[0022] The sealing element (20) is integrally formed with the mounting base element (10). The sealing element (20) enters into elastic contact with the other circumferential edge of the opening or the circumferential edge of the plate (1) when the plate (1) is in a closed position. The sealing element (20) has a coating film (50) formed on its surface.

[0023] The coating film (50) is provided by adding a filler (70) to a base (60). The filler (70) has particles of various sizes. The filler (70(70A)) provided closest to the outer surface of the sealing element (20) has a particle size in the range of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation.

[0024] Additionally, according to one aspect of the present invention, the base (60) has a hardness of no more than 46 MPa under a nanoindentation tester with the maximum indentation load applied to an indenter set to 20 µN.

[0025] Additionally, according to one aspect of the present invention, the base (60) has a thickness (S) of no more than 20 µm.

[0026] Symbols in brackets indicate components or objects that correspond to the drawings.

[0027] According to the present invention, the mounting base element of the sealing strip can be coupled to the flange of the peripheral edge of the plate and / or the peripheral edge of the opening. The sealing element is integrally cast with the mounting base element and comes into elastic contact with the other peripheral edge of the opening or the plate when the plate is in the closed position. The sealing element has a coating film formed on its surface, which is provided by adding the filler to the base. The filler has a larger average particle size, in the range of 15 to 20 µm. This improves the noise reduction performance of the sealing element.

[0028] Additionally, the filler exhibits a lower deformation strength of no more than 0.1 MPa at 10% deformation. The filler deforms when it is trapped between the sealing element and the opposing element. If the sealing strip is coupled to the perimeter edge of the panel, such as a door, the opposing element is the perimeter edge of the opening; or, if the sealing strip is coupled to the perimeter edge of the opening, it is the perimeter edge of the panel. This narrows the space between the filler and the opposing element, preventing a deterioration of the watertightness performance.

[0029] The filler with enlarged particle size and reduced deformation resistance at 10% deformation provides both noise reduction and waterproofing performance.

[0030] According to the present invention, the mounting base element of the sealing strip can be coupled to the flange of the peripheral edge of the plate and / or the peripheral edge of the opening. The sealing element is integrally formed with the mounting base element and is in elastic contact with the other peripheral edge of the opening or the plate when the plate is in the closed position. The sealing element has a coating film formed on its surface, which is provided by adding the filler to the base. The filler has particles of different sizes. The filler that protrudes most from the base or is provided closest to the outer surface of the sealing element has a larger particle size, in the range of 15 to 20 µm. This improves the noise reduction performance of the sealing element.

[0031] Additionally, the filler exhibits a lower deformation strength of no more than 0.1 MPa at 10% deformation. The filler deforms when it is compressed between the sealing element and the opposing element. If the sealing strip is coupled to the perimeter edge of the panel, such as a door, the opposing element is the perimeter edge of the opening; or, if the sealing strip is coupled to the perimeter edge of the opening, it is the perimeter edge of the panel. This narrows the space between the filler and the opposing element and prevents a deterioration of the watertightness performance.

[0032] The filler with enlarged particle size and reduced deformation resistance at 10% deformation provides both noise reduction and waterproofing performance.

[0033] According to the present invention, the mounting base element of the sealing strip can be coupled to the flange of the peripheral edge of the plate and / or the peripheral edge of the opening. The sealing element is integrally formed with the mounting base element and comes into elastic contact with the other peripheral edge of the opening or the plate when the plate is in the closed position. The sealing element has a coating film formed on its surface, which is provided by adding the filler to the base. The filler has particles of various sizes. The filler contained in the base has the larger maximum particle size, which falls in the range of 15 to 20 µm. This improves the noise reduction performance of the sealing element.

[0034] Additionally, the filler exhibits a lower deformation strength of no more than 0.1 MPa at 10% deformation. The filler deforms when it is compressed between the sealing element and the opposing element. If the sealing strip is coupled to the perimeter edge of the panel, such as a door, the opposing element is the perimeter edge of the opening; or, if the sealing strip is coupled to the perimeter edge of the opening, it is the perimeter edge of the panel. This narrows the space between the filler and the opposing element and prevents a deterioration of the watertightness performance.

[0035] The filler with enlarged particle size and reduced deformation resistance at 10% deformation provides both noise reduction and waterproofing performance.

[0036] Additionally, the base exhibits a hardness of no more than 46 MPa under the nanoindentation tester with the maximum indentation load applied to the indenter, which is set to 20 µN. This further improves the noise reduction performance.

[0037] Additionally, the filler has an average particle size in the range of 15 to 20 µm, and the base has a thickness of no more than 20 µm. This reduces the amount of filler that is not exposed from the surface of the coating film, allowing the filler to fully perform its function. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a cross-sectional view of a sealing strip 200 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the in Fig. 1 of the illustrated sealing strip 200, as it is bent. Fig. 3A and Fig.3B are schematic enlarged cross-sectional views along line III-III in Fig. 2, showing the main components of a sealing strip 200 with a conventional coating film. Fig. Figure 4 is a schematic enlarged cross-sectional view along line III-III in Fig. 2, showing the main components of the sealing strip 200 with a coating film according to an embodiment of the present invention. Fig. Figure 5 is a schematic enlarged cross-sectional view showing the main components of the sealing strip 200 with a coating film according to a further embodiment of the present invention. Fig. 6 is an enlarged cross-sectional view showing the surface of the in Fig. Figure 5 shows the worn coating film. DETAILED DESCRIPTION

[0038] With reference to Fig. 1, Fig. 2 and Fig.4 A sealing strip 200 according to an embodiment of the present invention is described.

[0039] The sealing strip 200 comprises a mounting base element 10 and a hollow sealing element 20. The mounting base element 10 is coupled to a flange on a circumferential edge of a panel 1 of an automobile, which in this embodiment is a side door 1. The hollow sealing element 20 is integrally formed with the mounting base element 10. The hollow sealing element 20 comes into elastic contact with a circumferential edge of an opening in an automobile body 2 when the side door 1 is in a closed position. The hollow sealing element 20 is formed from sponge rubber. The hollow sealing element 20 has a coating film 50 formed on its surface.

[0040] The drawings illustrate the thickness of the coating film 50 solely for the purpose of better understanding the invention. The coating film 50 has a thickness expressed in micrometers (µm), and the hollow sealing element 20 has a thickness expressed in millimeters (mm). The coating film 50 has a thickness of essentially one thousandth of the thickness of the hollow sealing element 20.

[0041] In this embodiment, the sponge rubber used as the hollow sealing element 20 has a specific density of 0.40.

[0042] The specific density of the hollow sealing element 20 is determined by splitting the hollow sealing element 20, for example by cutting it out, and subjecting the hollow sealing element 20 to the water immersion displacement method.

[0043] In this embodiment, the hollow sealing element 20 is formed by a rubber material comprising mainly ethylene propylene diene monomer (EPDM) rubber. In some embodiments, the hollow sealing element 20 is formed by rubber materials consisting mainly of synthetic rubber other than EPDM or various thermoplastic elastomers.

[0044] As in Fig. As shown in Figure 4, the hollow sealing element 20 has a coating film 50 formed on its surface. The coating film 50 is provided by adding a filler 70 to a base 60. The filler 70 has an average particle size in the range of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation. In this embodiment, the filler 70 has an average particle size of 20 µm and a deformation strength of 0.1 MPa at 10% deformation.

[0045] This is because the evaluation showed that the filler with a larger average particle size on the order of 8 µm, 15 µm, 20 µm according to Table 2 improves noise reduction performance, and the filler with a lower deformation strength at 10% deformation on the order of 25.0 MPa, 10.0 MPa, 0.5 MPa, 0.1 MPa according to Table 3 improves water tightness performance.

[0046] The deformation strength of the filler at 10% deformation is measured using the NS-A300 microparticle compressive strength tester, manufactured by Nano Seeds Corporation, in accordance with JIS Z 8844:2019, Method for Measuring the Compressive and Deformation Strength of Microparticles. Particle size is measured using image analysis software by measuring the diameter (length) of the particle compressed between an indenter and a plane where the particles adhere, by reference to an image taken during the measurement.

[0047] In this embodiment, the filler 70 is silicone particles. However, the filler 70 is not limited to silicone particles. In some embodiments, the filler 70 is a different material such as polyethylene, nylon, acrylic, urethane, or fluorine. In this modification, it is only required that the filler 70 has a deformation strength of no more than 0.1 MPa at 10% deformation.

[0048] In this embodiment, the base 60 is provided by a water-based polyurethane resin (30% solids content) mixed with a carbodiimide-type curing agent. However, the base 60 is not limited to this.

[0049] The base 60 preferably has a hardness of no more than 46 MPa. In this embodiment, the base 60 has a hardness of 46 MPa.

[0050] This is because the evaluation showed that the base 60 with a lower hardness on the order of 205 MPa, 122 MPa, 46 MPa, 26 MPa according to Table 4 improves the noise reduction performance.

[0051] The hardness of the base 60 is measured using an Anton Paar GmbH UNHT 3 test machine (nanoindentation tester) and a Berkovich indenter, under a maximum indentation load of 20 µN and a loading or unloading rate of 600 µN / min according to ISO 14577. The hollow sealing element 20 is cut into a 10 mm x 10 mm square as a test specimen. The test specimen has a thickness of essentially 1.8 mm.

[0052] The weight ratio of filler 70 to base 60 is preferably 1 to 6 or less. In this embodiment, the weight ratio is 1 (filler 70) to 2 (base 60).

[0053] The “Evaluation of noise reduction performance” in Table 2 and Table 4 is the result of the sensory evaluation of the squeaking generated under semi-wet conditions. In the tables, “◯” indicates no noise, “△” indicates a slight noise, and “×” indicates loud noise.

[0054] The “Water tightness performance” evaluation in Table 3 is the result of the water leak evaluation when the sealing strip comes into elastic contact with the opposite surface during a simulated rain event, in order to measure the time from water ingress to penetration. In Table 3, “◯” is not less than 30 minutes, “△” is 10 to less than 30 minutes, and “×” is less than 10 minutes.

[0055] The base 60 preferably has a thickness S of no more than 20 µm to expose the filler 70. More preferably, the thickness S is no more than 17 µm, and even more preferably, no more than 15 µm. In this embodiment, the thickness S is 20 µm. The minimum thickness S is not limited. To maintain the durability of the hollow sealing element 20, the thickness S is preferably no less than 1 µm, more preferably no less than 2 µm, and even more preferably no less than 3 µm.

[0056] The thickness S is measured using image analysis software by measuring the vertical length of the base 60 relative to the hollow sealing element 20 at the measuring point of an image of the cross-sectional area of ​​the hollow sealing element 20, magnified by a digital microscope. [Table 2] Evaluation of noise reduction performance Deformation strength at 10% deformation [MPa] average particle size [µm] 8 15 20 0,1 △ ◯ ◯ 0,5 × △ ◯ 10 × × ◯ 25 × × ◯ [Table 3] Evaluation of water resistance performance Deformation strength at 10% deformation [MPa] average particle size [µm] 8 15 20 0,1 ◯ (60 minutes, no water leak) ◯ (60 minutes, no water leak) ◯ (60 minutes, no water leak) 0,5 △ (18 minutes) × (7 minutes) × (1 minute) 10 △ (15 minutes) × (5 minutes) × (1 minute) 25 △ (18 minutes) × (4 minutes) × (1 minute) [Table 4] Evaluation of noise reduction performance Base hardness [MPa] average particle size [µm] 8 15 20 26 ◯ ◯ ◯ 46 △ ◯ ◯ 122 × × × 205 × × ×

[0057] The filler 70 has a larger average particle size, falling within the range of 15 to 20 µm. This improves the noise reduction performance of the hollow sealing element 20 when the hollow sealing element 20 comes into elastic contact with the circumferential edge of the opening.

[0058] Additionally, filler 70 exhibits a lower deformation strength of no more than 0.1 MPa at 10% deformation. As in Fig.As shown in Figure 4, the filler 70 is deformed when it is squeezed between the hollow sealing element 20 and the circumferential edge of the opening as the opposite element. This narrows the space between the filler 70 and the circumferential edge of the opening as the opposite element and prevents a deterioration of the watertightness performance.

[0059] The filler 70 with increased particle size and reduced deformation strength at 10% deformation provides both noise reduction performance and waterproofing performance.

[0060] Additionally, the Basis 60 has a hardness of no more than 46 MPa. This further improves noise reduction performance.

[0061] Additionally, the filler 70 has an average particle size in the range of 15 to 20 µm, and the base 60 has a thickness of no more than 20 µm. This reduces the amount of filler 70 that is not exposed from the surface of the coating film 50, thus allowing the filler 70 to fully perform its function.

[0062] In this embodiment, the filler 70 is a single type of silicone particle. However, the filler 70 is not limited to this single type. In some embodiments, the filler 70 is several types of silicone particles combined with other materials such as polyethylene, nylon, acrylic, urethane, fluorine, or combinations of these other materials besides silicone. In this modification, it is only required that the filler 70 has a deformation strength of no more than 0.1 MPa at 10% deformation.

[0063] Table 5 and Table 6 show the results of the evaluation of noise reduction performance and water resistance performance when filler 70 is the only type of silicone particles (coating A) and when several fillers 70 are combined (coatings B, C, D, E). [Table 5] component Formulation [weight parts] Coating A Coating B Coating C Coating D Coating E Main components 100 100 100 100 100 hardening agents 5 5 5 5 5 Ion exchange water 30 30 30 30 30 Filler A 30 10 10 10 10 Filler B - 20 - - - Filler C - - 20 - - Filler D - - - 20 - Filler E - - - - 20 in total 165 165 165 165 165 [Table 6] filler material Deformation strength at 10% deformation [MPa] average particle size [µm] A silicone 0,1 20 B silicone 0,1 10 C PMMA 0,5 10 D PMMA 10 10 E PMMA 25 10

[0064] Coating A is a mixture of Base 60 with ion exchange water and Filler A. Base 60 comprises an aqueous polyurethane resin (30% solids content) mixed with a carbodiimide-type curing agent. Filler A consists of silicone particles with an average particle size of 20 µm and a flexural strength of 0.1 MPa at 10% deformation. The formulation consists of 100 parts by weight of aqueous polyurethane resin as the main component, 5 parts by weight of the curing agent, 30 parts by weight of the ion exchange water, and 30 parts by weight of Filler A, totaling 165 parts by weight.

[0065] Coating B is a mixture of Base 60 with ion exchange water, filler A, and filler B. Base 60 comprises aqueous polyurethane resin (30% solids content) mixed with a carbodiimide-type curing agent. Filler A consists of silicone particles with an average particle size of 20 µm and a deformation strength of 0.1 MPa at 10% deformation. Filler B consists of silicone particles with an average particle size of 10 µm and a deformation strength of 0.1 MPa at 10% deformation. The formulation consists of 100 parts by weight of aqueous polyurethane resin as the main component, 5 parts by weight of the curing agent, 30 parts by weight of ion exchange water, 10 parts by weight of filler A, and 20 parts by weight of filler B, totaling 165 parts by weight.

[0066] Coating C is a mixture of Base 60 with ion exchange water, filler A, and filler C. Base 60 comprises aqueous polyurethane resin (30% solids content) mixed with a carbodiimide-type curing agent. Filler A consists of silicone particles with an average particle size of 20 µm and a flexural strength of 0.1 MPa at 10% deformation. Filler C consists of relatively soft acrylic resin (PMMA) particles with an average particle size of 10 µm and a flexural strength of 0.5 MPa at 10% deformation. The formulation consists of 100 parts by weight of aqueous polyurethane resin as the main component, 5 parts by weight of the curing agent, 30 parts by weight of ion exchange water, 10 parts by weight of filler A, and 20 parts by weight of filler C, totaling 165 parts by weight.

[0067] Coating D is a mixture of Base 60 with ion exchange water, filler A, and filler D. Base 60 comprises aqueous polyurethane resin (30% solids content) mixed with a carbodiimide-type curing agent. Filler A consists of silicone particles with an average particle size of 20 µm and a flexural strength of 0.1 MPa at 10% deformation. Filler D consists of medium-hardness acrylic resin (PMMA) particles with an average particle size of 10 µm and a flexural strength of 10.0 MPa at 10% deformation. The formulation consists of 100 parts by weight of aqueous polyurethane resin as the main component, 5 parts by weight of the curing agent, 30 parts by weight of ion exchange water, 10 parts by weight of filler A, and 20 parts by weight of filler D, totaling 165 parts by weight.

[0068] Coating E is a mixture of Base 60 with ion exchange water, filler A, and filler E. Base 60 comprises aqueous polyurethane resin (30% solids content) mixed with a carbodiimide-type curing agent. Filler A consists of silicone particles with an average particle size of 20 µm and a flexural strength of 0.1 MPa at 10% deformation. Filler E consists of relatively hard acrylic resin (PMMA) particles with an average particle size of 10 µm and a flexural strength of 25.0 MPa at 10% deformation. The formulation consists of 100 parts by weight of aqueous polyurethane resin as the main component, 5 parts by weight of the curing agent, 30 parts by weight of ion exchange water, 10 parts by weight of filler A, and 20 parts by weight of filler E, totaling 165 parts by weight.

[0069] Table 7 shows the favorable results of the noise reduction and water tightness performance evaluations when coating A, coating B, coating C, coating D, or coating E is applied to the surface of the hollow sealing element 20. The evaluation conditions and the meaning of the symbols in Table 7 are the same as in Tables 2, 3, and 4. [Table 7] coating mixed filler Noise reduction performance Waterproofing performance A A ◯ ◯ B A and B ◯ ◯ C A and C ◯ ◯ D A and D ◯ ◯ E A and E ◯ ◯

[0070] As in Fig. As shown in Figure 5, the hollow sealing element 20 can have an uneven surface, with the filler 70 of different particle sizes protruding from the surface.

[0071] The filler 70 and the surface of the hollow sealing element 20 are covered with a film of the base 60, as shown in Fig. 5 at the time of shipment of the product (sealing strip 200). The filler 70 may be exposed by the film, as shown in Fig.Figure 6 shows that the film is worn down after repeated elastic contact of the part of the film with the circumferential edge of the opening or the circumferential edge of the plate 1 including the door.

[0072] In this embodiment, the filler 70 has an average particle size of 20 µm and a deformation strength of 0.1 MPa at 10% deformation. Alternatively, the filler 70 can have a maximum particle size in the range of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation.

[0073] The protrusion of filler 70, which improves noise reduction and waterproof performance, from the position where the hollow sealing element 20 enters into elastic contact with the circumferential edge of the opening, is effective. In this context, the filler 70 (70A) in the coating film 50, which protrudes most from the base 60, exhibits the following properties, as shown in Fig.Figure 6 shows, preferably the particle size falling in the range of 15 to 20 µm, and the deformation strength of not more than 0.1 MPa at 10% deformation. Alternatively, the filler 70 (70A), which is provided closest to the outside of the surface of the sealing element 20, has, as shown in Fig. 5 and Fig. Figure 6 shows, preferably the particle size falling within the range of 15 to 20 µm, and the deformation strength of not more than 0.1 MPa at 10% deformation. Fig. 5 features the film of base 60, which is provided closest to the outside, and therefore the most prominent filler is 70 (70A) in Fig. 5, which protrudes most from the surface of the sealing element 20, the filler 70, which is provided closest to the outside from the surface of the sealing element 20.

[0074] In Fig.In section 6, filler 70 (70A), which protrudes most from base 60, has a particle size in the range of 15 to 20 µm and a deformation strength of no more than 0.1 MPa at 10% deformation. Alternatively, filler 70 (70A), which protrudes most from base 60, can have a particle size of no less than 15 µm without an upper limit and a deformation strength of no more than 0.1 MPa at 10% deformation.

[0075] In this embodiment, the sealing strip 200 is coupled to the flange of the circumferential edge of the side door 1 and comes into elastic contact with the circumferential edge of the opening. In some embodiments, the sealing strip 200 is coupled to the flange of the circumferential edge of the opening and comes into elastic contact with the circumferential edge of the side door 1 when the side door 1 is in the closed position. In some embodiments, the hollow sealing element 20 is a solid lip. The material of the hollow sealing element 20 is not limited to sponge rubber. In some embodiments, the hollow sealing element 20 is formed by a single layer of solid rubber or by multiple layers of solid rubber and sponge rubber. In some embodiments, the sponge rubber has a specific density of more than or less than 0.40.The sealing strip 200 is applicable to any sealing strip that is coupled to the flange of the car's panels, e.g. rear doors, trunk lids or hoods. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 7418641

[0002] JP 2009-1710

[0003] JP 2000-313234

[0003] Cited non-patent literature

[0000] JIS Z 8844:2019

[0046]

Claims

[1] Sealing strip, comprising: a mounting base element configured to be operationally coupled to a flange of a circumferential edge of a panel of an automobile and / or a circumferential edge of an opening of an automobile body; a sealing element that is integrally formed with the mounting base element, wherein the sealing element is configured to enter into elastic contact with the other circumferential edge of the opening or the plate when the plate is in a closed position, and wherein the sealing element has a coating film formed on its surface; and wherein the coating film is produced by adding a filler to a base, wherein the filler has an average particle size falling within a range of 15 to 20 µm and has a deformation strength of no more than 0.1 MPa at 10% deformation. [2] Sealing strips, comprising: a mounting base element configured to be operationally coupled to a flange of a circumferential edge of a plate of an automobile and / or a circumferential edge of an opening of an automobile body; a sealing element that is integrally formed with the mounting base element, wherein the sealing element is configured to enter into elastic contact with the other circumferential edge of the opening or the plate when the plate is in a closed position, and wherein the sealing element has a coating film formed on its surface; and wherein the coating film is produced by adding a filler to a base, wherein the filler has particles of different sizes, wherein the filler which protrudes most from the base has a particle size falling in the range of 15 to 20 µm, and has a deformation strength of not more than 0.1 MPa at 10% deformation. [3] Sealing strips, comprising: a mounting base element configured to be operationally coupled to a flange of a circumferential edge of a plate of an automobile and / or a circumferential edge of an opening of an automobile body; a sealing element that is integrally formed with the mounting base element, wherein the sealing element is configured to enter into elastic contact with the other circumferential edge of the opening or the plate when the plate is in a closed position, and wherein the sealing element has a coating film formed on its surface; and wherein the coating film is provided by adding a filler to a base, wherein the filler has particles of different sizes, wherein the filler contained in the base has a maximum particle size falling within a range of 15 to 20 µm, and has a deformation strength of no more than 0.1 MPa at 10% deformation. [4] Sealing strips, comprising: a mounting base element configured to be operationally coupled to a flange of a circumferential edge of a plate of an automobile and / or a circumferential edge of an opening of an automobile body; a sealing element that is integrally formed with the mounting base element, wherein the sealing element is configured to enter into elastic contact with the other circumferential edge of the opening or the plate when the plate is in a closed position, and wherein the sealing element has a coating film formed on its surface; and wherein the coating film is produced by adding a filler to a base, wherein the filler has particles of different sizes, wherein the filler provided closest to an outside of the surface of the sealing element has a particle size falling in the range of 15 to 20 µm, and has a deformation strength of not more than 0.1 MPa at 10% deformation. [5] Sealing strip according to any one of claims 1 to 4, wherein the base has a hardness of not more than 46 MPa under a nanoindentation tester with a maximum indentation load applied to an indenter set to 20 µN. [6] Sealing strip according to any one of claims 1 to 4, wherein the base has a thickness of not more than 20 µm. [7] Sealing strip according to claim 5, wherein the base has a thickness of not more than 20 µm.

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