Sliding adhesive tape for automobile sealing strip

Abstract

The present invention relates to a slip tape for an automobile sealing strip, which forms a circular coil-shaped ring with a smooth outer surface, forms a low friction coefficient, appropriately prevents or minimizes the generation of abnormal noise, improves the slidability, and is knitted to hook the coil-shaped ring, thereby preventing the ring from falling off from the source. The slip tape comprises: a base material film which can be attached to the outer surface of an automobile door tape sealing strip and a door glass sealing strip and is formed from an olefin resin; an adhesive layer formed by applying an adhesive to the upper surface of the base film; and a loop fabric layer, the lower surface of which is attached to the upper surface of the adhesive layer, which is formed of a multifilament yarn made of a polyester fiber or a nylon material, the upper surface of which is woven with a plurality of upper loops in the form of a coil and which is formed protruding upward so as to be in close contact with the outer surface of the automotive glass, and the lower surface of which is flatly woven to form lower loops, and a hook to hook and support the upper ring.

Description

Technical Field

[0001] This invention relates to a slip tape for automotive weather strips, and more specifically, to a slip tape for automotive weather strips that forms a loop with a smooth outer surface and a circular coil shape, creating a low coefficient of friction, appropriately preventing or minimizing the generation of abnormal noise while improving sliding performance, and hooking the loop shape for weaving to fundamentally prevent the loop from falling off. Background Technology

[0002] Typically, such as... is used in the door window lift mechanism of a car. Figures 9 to 11 The door beltweather strip 2 and door glass sealing strip 4 shown are designed to prevent dust, water, wind, etc. from entering the interior space of the door that houses the door glass and to guide the door glass to rise and fall.

[0003] like Figures 9 to 11 As shown, the existing door strip 2 and door glass strip 4 are composed of the following components: an elastomer 12, which is fixed to the door trim 6, the door frame 8, and the door panel 10; a pressure part 16, which protrudes from the elastomer 12 toward the glass 14 side and makes elastic contact with the glass 14; and a sliding tape 18, which is disposed at the contact portion of the pressure part 16 and the elastomer 12 with the glass 14, so as to naturally achieve wear resistance of the pressure part 16 and the elastomer 12 and the lifting and lowering movement of the glass 14.

[0004] Accordingly, the elastic body 12 is fixed to the vehicle body, and the pressure part 16 contacts the two sides or corners of the glass 14 to prevent dust, water, wind and the like from entering the internal space of the door of the storage door glass (14) and to guide the lifting and lowering of the door glass 14.

[0005] Here, it is proposed that the sliding tape is a flocked sliding tape manufactured by one of the fiber manufacturing methods of using electrostatic flocking to make short fiber piles stand upright and fix on the adhesive layer, and a velvet sliding tape in which a velvet fabric woven by a velvet weaving method is used instead of the flocked surface.

[0006] As described above, the flocked sliding tape is as follows: Figure 12 As shown, the film is made by bonding multiple fibers cut to a certain length to the upper surface of a substrate film using an adhesive. The short fibers with rough cross-section stand upright on the upper surface of the substrate film to form a protruding structure. This upright structure is connected to the glass of the car at a right angle.

[0007] However, the existing technology described above has the following problems.

[0008] Existing sliding tapes, whether manufactured using flocking or velvet methods, form a short, upright fiber structure on the upper surface of the substrate film. Since the cross-section of the fibers is in contact with the glass, when the car window rises, the upright fibers immediately collapse upwards. However, when the window descends, the cross-section of the fibers becomes uneven during the reverse pull-down process, increasing the coefficient of friction with the glass. Consequently, the fibers adhered to the substrate film detach from the adhesive layer, resulting in poor durability and abrasion resistance. Furthermore, the friction between the fibers and the glass generates abnormal noise.

[0009] In particular, if the sliding tape is damp in rainy weather, there is a significant increase in fiber shedding and abnormal noise.

[0010] In addition, since the substrate film of existing sliding tape is composed of olefin resin layer, it has low tensile strength and melting temperature. Therefore, when supplying sliding tape during the extrusion molding of sealing strips, the substrate film is prone to breakage due to high extrusion pressure and high temperature environment. Summary of the Invention

[0011] Technical issues

[0012] This invention is proposed to solve the various existing problems as described above. The purpose of this invention is to provide a sliding tape for automotive sealing strips, which forms a smooth, circular coil-shaped ring with a low coefficient of friction, appropriately prevents or minimizes the generation of abnormal noise, improves sliding performance, and weaves the coil-shaped ring to prevent the ring from falling off at the source.

[0013] Another objective of this invention is to provide a sliding tape for automotive sealing strips that adheres a separate nylon film to a substrate film, thereby smoothly preventing the substrate film from breaking during the extrusion molding of the sealing strip.

[0014] Problem-solving methods

[0015] To achieve the above objectives, the "sliding tape for automotive sealing strips" according to the present invention is characterized by comprising: a substrate film, which is capable of being attached to the outer surface of the door strip sealing strip and the door glass sealing strip of an automobile, and is formed of an olefin resin; an adhesive layer, which is formed by coating the upper surface of the substrate film with an adhesive; and a loop fabric layer, the lower surface of which is attached to the upper surface of the adhesive layer, and is formed of multifilament yarn of polyester fiber or nylon material, wherein the upper surface is woven with a plurality of upper loops in the form of circular coils and protrudes upward to fit tightly against the outer surface of the automotive glass, and the lower surface is woven flat to form lower loops to hook and support the upper loops.

[0016] Furthermore, according to the "sliding tape for automotive sealing strips" of the present invention, the upper ring is characterized in that the upper ring is a sink loop ring formed by woven polyester fiber or nylon multi-filament yarn.

[0017] Furthermore, according to the "sliding tape for automotive sealing strips" of the present invention, the ring fabric layer is formed by mixing spandex yarn with the multifiber yarn in a weight ratio of 10% to 30% of the total weight of the polyester fiber or nylon material multifiber yarn.

[0018] Furthermore, according to the "sliding tape for automotive sealing strips" of the present invention, the annular fabric layer further includes: a recessed ring, which is formed between the upper ring and the upper ring at irregular intervals, recessed downwards compared to the upper ring, to form an irregular depression.

[0019] Furthermore, according to the "sliding tape for automotive sealing strips" of the present invention, the annular fabric layer further includes a softening layer, which is formed by impregnating the outer surface of the annular fabric layer with an amino-modified silicone-based softener emulsion.

[0020] In addition, according to the "sliding tape for automotive sealing strips" of the present invention, the solid content of residual silicon in the softening layer after drying is 1 to 3 g per square meter.

[0021] Furthermore, according to the "sliding tape for automotive sealing strips" of the present invention, the loop fabric layer has an upper and lower thickness of 0.4 to 0.6 mm and is woven from 15 to 30 denier spandex yarn mixed in a blending ratio of 10 to 30% by weight in 50 to 75 denier DTY yarn.

[0022] Furthermore, according to the "sliding tape for automotive sealing strips" of the present invention, the loop fabric layer has an upper and lower thickness of 0.4 to 0.6 mm and is woven by mixing spandex yarn in a blending ratio of 10 to 15% by weight in 50d / 36f DTY yarn or 50d / 48f DTY yarn of polyester fiber or nylon composition.

[0023] Furthermore, according to the "sliding tape for automotive sealing strips" of the present invention, the upper ring is formed at a density of 6,000 to 7,000 per square inch and has a height of 0.4 to 0.6 mm.

[0024] In addition, the "sliding tape for automotive sealing strips" according to the present invention is characterized in that the substrate film has an upper and lower thickness of 30 to 60 micrometers, and further includes: a nylon film layer, which is adhered to the upper surface of the substrate film, formed of a nylon film, and the nylon film layer has an upper and lower thickness of 10 to 15 micrometers.

[0025] The effects of the invention

[0026] As described above, in this invention, a ring with a smooth outer surface and a circular coil shape is formed, resulting in a low coefficient of friction. This effectively prevents or minimizes the generation of abnormal noise and improves sliding properties. The ring is then woven around itself, preventing it from falling off at the source. Thus, the quality of use is significantly improved by preventing noise, and durability and wear resistance are significantly improved by preventing it from falling off, while also ensuring a long service life.

[0027] In addition, in this invention, a separate nylon film is bonded to the substrate film, which effectively prevents the substrate film from breaking during the extrusion molding of the sealing strip, thereby improving durability and workability. Attached Figure Description

[0028] Figure 1 A simplified longitudinal cross-sectional view of the sliding tape according to the present invention;

[0029] Figure 2 A simplified longitudinal cross-sectional view of the loop fabric layer of the sliding tape according to the present invention is shown;

[0030] Figure 3 An example diagram showing the upper surface of the woven state of the annular fabric layer according to the present invention;

[0031] Figure 4 An example diagram showing the lower surface of the woven state of the annular fabric layer according to the present invention;

[0032] Figure 5 A simplified longitudinal cross-sectional view of the loop fabric layer of the sliding tape according to another embodiment of the present invention is shown;

[0033] Figure 6 To show the basis Figure 5 A photograph of the planar surface of the sliding tape in an embodiment;

[0034] Figure 7 To show that it will be based on Figure 5 A photograph of a cross-section of the sliding tape applied to the sealing strip in an embodiment;

[0035] Figure 8 To illustrate a simplified longitudinal cross-sectional view of the sliding tape according to yet another embodiment of the present invention;

[0036] Figure 9 A side view of a vehicle with a slip belt using an existing flocking method;

[0037] Figure 10 for Figure 9 A simplified cross-sectional view of line AA in the middle;

[0038] Figure 11 for Figure 9 Simplified cross-sectional view of the middle BB line;

[0039] Figure 12 A photograph is shown to illustrate an existing sliding tape. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the described embodiments.

[0041] Figures 1 to 6 The following are simplified drawings and photographs of the sliding tape according to the present invention. As shown, the sliding tape for automotive sealing strips according to the present invention includes a substrate film 100, an adhesive layer 200 formed by coating the upper surface of the substrate film 100, and a ring fabric layer 300 attached to the adhesive layer 200 and having a plurality of upper rings 301 protruding upwards.

[0042] The substrate film 100, formed of an olefin resin, can be attached to the outer surface of the door seal strip and the door glass seal strip of an automobile. Its function is to provide a place for the door seal strip and the door glass seal strip to be attached to the outer surface by thermal bonding, and at the same time provide a place for adhesive to be applied.

[0043] Typically, when a sealing strip is made by extruding and manufacturing a material such as TPE or EPDM used as a material for automotive sealing strips, the heat generated during the extrusion of the substrate film 100 thermally bonds it to the sealing strip. At this time, the substrate film 100 is compatible with materials such as TPE or EPDM, and olefin resins are used to make thermal bonding easier.

[0044] Furthermore, the olefin resin is preferably a copolymer resin of polyethylene or polypropylene.

[0045] As described above, the substrate film 100 is manufactured by T-die extrusion and then subjected to corona discharge surface treatment on one side so that the adhesive layer 200 can be smoothly coated and properly bonded to the loop fabric layer 300.

[0046] Preferably, the thickness of the substrate film 100 is 30 to 60 micrometers. This is because when it is thinner than 30 micrometers, it is difficult to bond with the annular fabric layer 300 by adhesive, and being too thin will reduce the adhesion to the sealing strip. When it is thicker than 60 micrometers, the sliding tape becomes too thick and hard, which will cause a sharp decrease in the adhesion to the curved part of the sealing strip.

[0047] The adhesive layer 200 is formed by applying an adhesive to the upper surface of the substrate film 100, and can bond the loop fabric layer 300 to the outer surface of the substrate film 100. As described above, the adhesive of the adhesive layer 200 is preferably a two-component polyurethane adhesive with good heat resistance.

[0048] The lower surface of the loop fabric layer 300 is attached to the upper surface of the adhesive layer 200 and is formed of multi-filament yarn of polyester fiber or nylon material. The upper surface is woven into a plurality of upper loops 301 in the form of circular coils and protrudes upward to fit tightly against the outer surface of the car's glass. The lower surface is woven flat to form lower loops 302 to hook and support the upper loops 301. The upper loops 301 in the form of circular coils without cross-sections can reduce the coefficient of friction of the outer surface of the car's glass and prevent the generation of abnormal noise.

[0049] The upper ring 301 is formed in a circular coil shape, which reduces friction on the outer surface of the car's glass and prevents or minimizes the generation of abnormal noise. The upper ring 301 is formed of multi-fiber yarn, with multiple strands of coils formed on a single line.

[0050] The upper ring 301 is formed by the sinking arc ring of a woven fabric made of multi-filament yarns of polyester or nylon material, and the upper surface is formed by arranging the upper rings 301. As described above, the sinking arc surface formed by the sinking arc rings is formed by the aggregation of the upper rings 301 to form the back of the woven fabric. Figure 3 In the example, its shape is shown in a two-dimensional plane.

[0051] The upper ring 301 is formed at a density of 6,000 to 7,000 per square inch, with a circular coil structure having a height of 0.4 to 0.6 mm, thereby achieving excellent wear resistance, stable sliding properties, and low friction with high density.

[0052] The lower loop 302 is woven flat, i.e., flat against the ground, from multi-fiber yarns. Together with the upper loop 301, it forms a needle loop ring, which hooks and supports the upper loop 301, and also serves as a support at the bonding point of the adhesive layer 200. As described above, the needle loop ring forms a needle-knitted curved surface, which is gathered by the lower loop 302 and forms the surface of the woven fabric. Figure 4 In the example, its shape is shown in a two-dimensional plane.

[0053] The loop fabric layer 300, formed by the upper loop 301 and the lower loop 302, serves as the knitted fabric, preferably a flat weft-knitted structure that facilitates the formation of loops. This flat weft-knitted structure refers to a structure woven by pulling the loops from the back side to the surface side using a single set of needles. This flat weft-knitted structure is primarily produced using a circular knitting machine.

[0054] The surface of the flat weft-knitted fabric forms a knitted arc, creating rows in a V-shape, with indentations between the rows (see reference). Figure 4 The back of the flat weave of the weft-knitted fabric forms a semi-circular column with a settling arc, which forms columns, and recesses are formed between the columns (see reference). Figure 3 ).

[0055] Preferably, the loop fabric layer 300 is formed by mixing spandex yarn with the multifilament yarn of the polyester fiber or nylon material at a weight ratio of 10% to 30% of the total weight of the multifilament yarn. In this way, the weft knitted fabric mixed with spandex yarn has great elasticity in forming the original yarn and weaving the weft knitted fabric, increasing shrinkage, which can make the sinker arc protrude upward, and at the same time appropriately form a circular loop shape.

[0056] When the spandex yarn is mixed at less than 10% by weight, its elasticity decreases sharply, making it difficult to form a circular ring pattern. When the spandex yarn is mixed at more than 30% by weight, its elasticity is excessive, making it difficult to adjust the height of the ring pattern.

[0057] Here, spandex yarn is a general term for synthetic fibers made from elastic yarn of polyurethane fibers, referring to fiber yarn with excellent stretchability.

[0058] The loop fabric layer 300 preferably has an upper and lower thickness of 0.4 to 0.6 mm, as this is the most suitable thickness for a sliding layer of the sealing strip.

[0059] As described above, the loop fabric layer 300 can be woven by blending 15 to 30 denier spandex yarn in a blending ratio of 10 to 30% by weight into 50 to 75 denier DTY yarn, thereby forming a high-density circular loop layer with high slip resistance.

[0060] In addition, the ring fabric layer 300 can be woven by blending spandex yarn with 50d / 36f DTY yarn or 50d / 48f DTY yarn of polyester or nylon composition at a blending ratio of 10 to 15% by weight, thus forming a high-density circular ring layer with high sliding properties.

[0061] Here, polyester fiber or nylon DTY (Draw Textured Yarn) refers to false twist treatment. Multi-filament synthetic fiber yarns, 50d / 36f refers to a thickness of 50 denier formed by 36 monofilament yarns aggregated together, and 50d / 48f refers to a thickness of 50 denier formed by 48 monofilament yarns aggregated together. Spandex yarn has the effect of increasing elasticity and facilitating the formation of circular ring patterns, and it is preferred to use a thickness that is thinner than DTY yarn.

[0062] The sliding tape constructed as described above is a groundbreaking invention that prevents the upper ring 301 from falling off from the source by forming a smooth, circular coil shape of the upper ring 301, thereby creating a low coefficient of friction, appropriately preventing or minimizing the generation of abnormal noise, and improving sliding performance. The lower ring 302 hooks onto the coil-shaped upper ring 301 and weaves it.

[0063] Figures 5 to 7 These are simplified diagrams and photographs illustrating a looped fabric layer of a sliding tape according to another embodiment of the present invention. As shown, the looped fabric layer 300 of the sliding tape for automotive sealing strips according to another embodiment of the present invention further includes recessed rings 303 formed between the upper rings 301 and the upper rings 301 at irregular intervals, which are recessed downward relative to the upper rings 301 to form irregular depressions.

[0064] The depression ring 303 is formed below the upper ring 301 and is irregularly distributed between the upper rings 301, thereby irregularly forming a depression formed by the continuous arrangement of multiple upper rings 301.

[0065] Here, the regular indentation formed by the upper ring 301 is an important factor in fixing the adhesive parts on the outer surface of the automotive glass and increasing the coefficient of friction.

[0066] As described above, the recesses formed by the continuous arrangement of the upper rings 301 through the recessed rings 303 are irregularly formed, thereby relatively reducing the coefficient of friction of the automotive glass and improving the sliding performance.

[0067] The upper ring 301 and the sunken ring 303 of the ring fabric layer 300 manufactured in this way have the following morphology: Figure 6 The photograph shows the cross-section of its shape when attached to the sealing strip. Figure 7 The image is shown in the photo.

[0068] Figure 8 A simplified longitudinal cross-sectional view of the sliding tape according to another embodiment of the present invention is shown. As shown, the loop fabric layer 300 of the sliding tape for automotive sealing strips according to another embodiment of the present invention further includes a softening layer 304 formed by impregnating its outer surface with an amino-modified silicone-based softener emulsion.

[0069] The softening layer 304 can make the upper ring 301 of the loop fabric layer 300 more flexible, maintain a lower coefficient of friction, and improve sliding performance.

[0070] The aforementioned smoothing layer 304 preferably has a residual silicon solids content of 1 to 3 g per square meter after drying. This is because if the residual solids content is less than 1 g, the improvement in slipability is negligible; if it is more than 3 g, the silicon solids content will cause distortion on the automotive glass surface, i.e., adhesion problems.

[0071] According to experimental calculations, the coefficient of friction between the surface of existing slip tapes formed by flocking and the automotive glass surface is typically 0.32 to 0.38 (at room temperature and humidity of 40% to 50%). The coefficient of friction of the slip tape according to the present invention is 0.21 to 0.30, thus improving slip performance. In another embodiment of the present invention, the sink marks are irregularly arranged to suppress the formation of regular depressions, and the coefficient of friction of the slip tape treated with an amino-modified silicone-based softener is measured to be 0.18 to 0.26, confirming a further improvement in slip performance.

[0072] The substrate film 100 of this sliding strip also includes a nylon film layer 101 bonded to its upper surface and formed of a nylon material. The function of the nylon film layer 101 is to prevent the substrate film 100 from breaking due to high temperature and high pressure during the extrusion molding of the sealing strip.

[0073] As described above, the nylon film layer 101 preferably has a thickness of 10 to 15 micrometers. This is because if the thickness of the nylon film layer 101 is thinner than 10 micrometers, the durability is excessively reduced, and it is not possible to properly prevent the substrate film 100 from breaking. If the thickness is thicker than 15 micrometers, it may be formed unnecessarily thick, making the substrate film 100 as a whole too thick.

[0074] The preferred embodiments of the present invention have been described above. Various variations, modifications, and equivalents may be used with the present invention. The present invention clarifies that the described embodiments can be appropriately modified and applied in the same way. Therefore, the description is not limited to the scope of the invention as defined by the following patent claims.

[0075] On the other hand, specific embodiments are described in the specification of this invention, but it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of this invention.

Claims

1. A sliding adhesive tape for automotive sealing strips, characterized in that, include: The substrate film (100), which can be attached to the outer surface of the door seal strip and the door glass seal strip of an automobile, is formed of an olefin resin; An adhesive layer (200) is formed by coating an adhesive onto the upper surface of the substrate film (100); The loop fabric layer (300), whose lower surface is attached to the upper surface of the adhesive layer (200), is formed of multifilament yarn made of polyester fiber or nylon material. The upper surface is woven with a plurality of upper loops (301) in the form of circular coils and protrudes upward to fit closely to the outer surface of the automotive glass. The lower surface is woven flat to form lower loops (302) to hook and support the upper loops (301).

2. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The upper ring (301) is a sinking arc ring formed by weaving polyester fiber or nylon material multi-filament yarn.

3. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The loop fabric layer (300) is formed by mixing spandex yarn into the multifiber yarn at a weight ratio of 10% to 30% of the total weight of the polyester fiber or nylon material multifiber yarn.

4. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The annular fabric layer (300) further includes a recessed ring (303) formed between the upper ring (301) and the upper ring (301) at irregular intervals, recessed downwards relative to the upper ring (301) to form an irregular depression.

5. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The loop fabric layer (300) further includes a softening treatment layer (304), which is formed by impregnating the outer surface of the loop fabric layer (300) with an amino-modified silicone-based softener emulsion.

6. The sliding tape for automotive sealing strips according to claim 5, characterized in that, The solid content of residual silicon in the softening layer (304) after drying is 1 to 3 g per square meter.

7. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The loop fabric layer (300) has an upper and lower thickness of 0.4 to 0.6 mm and is woven from 15 to 30 denier spandex yarn in a blending ratio of 10 to 30% by weight in 50 to 75 denier DTY yarn.

8. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The loop fabric layer (300) has an upper and lower thickness of 0.4 to 0.6 mm and is woven from spandex yarn in a blending ratio of 10 to 15% by weight in 50d / 36f DTY yarn or 50d / 48f DTY yarn of polyester or nylon composition.

9. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The upper ring (301) is formed at a density of 6,000 to 7,000 per square inch and has a height of 0.4 to 0.6 mm.

10. The sliding tape for automotive sealing strips according to claim 1, characterized in that, The substrate film (100) has an upper and lower thickness of 30 to 60 micrometers; It also includes: a nylon film layer (101), which is bonded to the upper surface of the substrate film (100) and is formed of a nylon film; The nylon film (101) has an upper and lower thickness of 10 to 15 micrometers.

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