JP6957943B2 - Sliding fabric and window glass stabilizer - Google Patents

Description

The present invention relates to a sliding fabric containing a fluororesin fiber suitable as a sliding material. The present invention also relates to a window glass stabilizer made of the sliding cloth.

Conventionally, fluororesin has been used by being laminated or coated on the surface layer of a sliding member by taking advantage of its low coefficient of friction. However, in the case of laminating or coating a fluororesin, the fluororesin film is thin and non-adhesive, so that it is easily peeled off, and it is necessary to repeat laminating and coating in order to maintain slidability for a long period of time. In order to eliminate such drawbacks, fluororesin is made into fibers and placed on the surface of the sliding member as a woven knit or non-woven fabric to improve friction durability, and further to be combined with a woven knit that easily adheres to other materials. Sliding materials that adhere more firmly have been developed.

For example, in Patent Document 1, by using a pile woven fabric having a pile portion made of polytetrafluoroethylene yarn and having a specific fluff density as an interview member for a window glass stabilizer, friction with the glass surface is small and smooth. Disclosed is a technique that slides on the glass, does not leave a mark on the glass, and can exert an excellent steady rest effect due to the volume elastic effect of the pile yarn.

The window glass stabilizer is attached near the waist opening in the window glass vault body in order to prevent the glass from vibrating when the window glass is opened and closed. Generally, the glass is provided from both sides of the window glass. It is composed of an interview member or the like that is slidably contacted with a surface.

Jikken 8-6057 Gazette

However, when the pile fabric described in Patent Document 1 is used as an interview member for a window glass stabilizer, if water droplets adhere to the window glass due to rainfall or the like and the pile yarn becomes wet, the glass surface and the pile yarn are opened and closed. There is a problem that an unpleasant abnormal noise is generated when the glass is in sliding contact.

The present invention solves the problems of the prior art, has a small difference between the coefficient of static friction and the coefficient of dynamic friction even in a wet state, and is unpleasant when sliding with a mating member so that water can be efficiently discharged from the sliding surface. An object of the present invention is to provide a sliding cloth that does not generate noise.

In order to solve such a problem, the present invention has the following configuration.

(1) A sliding cloth containing fluororesin fibers, in which the sliding cloth has a sliding surface, and a plurality of ridges and bases extending in one direction are alternately formed on the sliding surface. Sliding fabric.

(2) The sliding fabric according to (1), wherein the area ratio of the convex portion to the base portion on the sliding surface is 0.1 to 2.

(3) The sliding cloth according to (1) or (2), wherein the convex portion on the sliding surface has a height of 0.05 to 2 mm.

(4) The sliding cloth according to any one of (1) to (3), wherein the convex portion on the sliding surface is formed by arranging fluororesin fibers.

(5) The sliding fabric according to (4), wherein the fluororesin fiber has a fineness ratio of 10 to 30 times that of other fibers.

(6) The sliding surface according to any one of (1) to (5), wherein the difference between the coefficient of static friction and the coefficient of dynamic friction when the sliding surface is slid in a direction perpendicular to the ridge direction in a wet state is 0.2 or less. Sliding fabric.

(7) The sliding cloth according to any one of (1) to (6), wherein the sliding cloth is a double woven fabric.

(8) A window glass stabilizer using the sliding fabric according to any one of (1) to (7) for at least a part of the interview member.

According to the present invention, by alternately forming a plurality of ridges and bases extending in one direction on the sliding surface containing fluororesin fibers, the coefficient of static friction is perpendicular to the ridges even in a wet state. Provided is a sliding fabric having a small difference in coefficient of dynamic friction, capable of efficiently discharging water from a sliding surface, and not generating an unpleasant abnormal noise when sliding with a mating member.

Such a sliding cloth can be usefully used for an interview member for a window glass stabilizer, a sliding material for a fixing part of a copying machine, an anti-vibration rubber, and the like, and particularly useful for an interview member for a window glass stabilizer. Can be done.

The sliding cloth according to the present invention is a sliding cloth containing fluororesin fibers, and the sliding cloth has a sliding surface, and a plurality of ridges and bases extending in one direction on the sliding surface are formed. It is characterized in that it is formed alternately.

In the present invention, the "convex portion" is a portion in which the thick portion of the fabric is formed in a streak pattern, and the "base portion" is a thin portion of the fabric formed in a portion other than the convex portion. In addition, "a plurality of ridges extending in one direction and a base are alternately formed" means that the ridges formed in a streak pattern and the base formed between the ridges alternate. It means that they are all arranged in one direction. Here, unidirectional means, for example, that the convex portions adjacent to the convex portion do not have to be strictly parallel and arranged in a straight line, and there may be some distortion, and the convex portions are generally parallel and arranged in one direction. I just need to be there.

The sliding cloth contains fluororesin fibers on the sliding surface. The sliding cloth has a sliding surface to be slid, and a plurality of ridges are formed on the sliding surface. The ridge portion is preferably made of a fluororesin fiber. As a result, it is possible to realize low friction of the convex portion that adheres to the mating material as a sliding surface. The base may be made of fluororesin fibers, but is preferably made of other fibers. As a result, mechanical performance such as the strength of the fabric itself can be maintained.

As a method of forming the convex portion on the sliding surface, a method of arranging a thread thicker than the other constituent threads in the direction of forming the convex portion, for example, in the case of a woven fabric, either the vertical direction or the horizontal direction. A method of weaving a thick thread or a plurality of threads with respect to other constituent threads only in the direction to weave a thread thicker than the other constituent threads, and embossing to form a thin part in a streak pattern and relative to each other. An embossing method or the like for forming a ridge portion and a base portion by forming a streak-like portion which becomes a thick material can be applied. Above all, it is preferable to form a ridge portion by arranging a thick fluororesin fiber as a thread obtained by combining the thick thread or a plurality of threads to make the thread thicker than the other constituent threads. As a result, the area ratio between the convex portion and the base portion and the height of the convex portion can be freely controlled.

The area ratio of the convex portion to the base portion on the sliding surface is preferably in the range of 0.1 to 2, and more preferably in the range of 0.3 to 1. When the area ratio is 0.1 or more, only the convex portion of the fluorine fiber adheres to the mating material, and low friction performance can be realized. If it is 2 or less, only the ridge portion adheres to the mating material, so the contact pressure with the mating material is high, the difference between the static and dynamic friction coefficients becomes small, and water can be discharged efficiently, and when sliding contact with the mating member No unpleasant noise is generated.

Here, the "area of the ridge portion" means a projected area in which the sliding surface of the fabric can come into contact with the mating material with a contact pressure of 100 pa within the sliding boundary. Further, the "base area" means a projected area in which the sliding surface of the fabric cannot come into contact with the mating material at a contact pressure of 100 pa within the sliding boundary. Further, the "area ratio of the ridge portion to the base portion" means (area of the ridge portion / area of the base portion).

The height of the convex portion on the sliding surface is preferably in the range of 0.05 to 2 mm, more preferably in the range of 0.1 to 1 mm. When the height is 0.05 mm or more, only the convex portion of the fluorine fiber adheres to the mating material, and low friction performance can be realized. If it is 2 mm or less, the ridges are less likely to be elastically deformed, and only the ridges adhere to the mating material to reduce the contact area, resulting in higher contact pressure, a smaller difference in static and dynamic friction coefficients, and efficient water. Can be discharged, and unpleasant abnormal noise is less likely to occur when sliding contact with the mating member.

Here, the "height of the ridge portion" means the distance from the surface of the base portion to the top of the ridge portion.

Further, the difference between the coefficient of static friction and the coefficient of dynamic friction when the sliding surface is slid in the direction perpendicular to the convex direction in a wet state is preferably 0.2 or less, more preferably 0.1 or less. Is inside. When the difference between the coefficient of static friction and the coefficient of dynamic friction is 0.2 or less, an unpleasant abnormal noise does not occur when sliding with the mating member.

Here, the "wet state" means immersing the friction partner material in water for 30 seconds. The "static friction coefficient" and "dynamic friction coefficient" are flat indenters with a moving speed of 100 mm / min, a load of 2.0 kg, using a surface roughness measuring machine Tribogear (TYPE: HEIDON-14DR) manufactured by Shinto Chemical Co., Ltd. The cloth is fixed to (area 10 × 10 mm) with screws, and a glass plate having a surface roughness of 0.8 μm, which is a friction partner material, is slid in a direction perpendicular to the direction of the ridges on the sliding surface of the sliding fabric. It means that the coefficient of static and dynamic friction was obtained. Further, the "difference between the coefficient of static friction and the coefficient of dynamic friction" means (coefficient of static friction-coefficient of dynamic friction).

Hereinafter, a method of forming a convex portion on the sliding surface by arranging thick fluororesin fibers will be described in detail.

<Fluororesin fiber>
In the present invention, the fluororesin which is a component of the fluororesin fiber may be a fluororesin composed of a monomer unit containing one or more fluorine atoms in the main chain or the side chain. Among them, those composed of monomer units having a large number of fluorine atoms are preferable.

The monomer unit containing one or more fluorine atoms preferably contains 70% or more, more preferably 90% or more, and further preferably 95 mol% or more of the repeating structural unit of the polymer.

Examples of the monomer containing one or more fluorine atoms include fluorine atom-containing vinyl-based monomers such as tetrafluoroethylene, hexafluoropropylene, and chlorotrifluoroethylene, and it is preferable to use at least tetrafluoroethylene.

Examples of the fluororesin include polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-p-fluoroalkyl vinyl ether copolymer (PFA), and polychlorotrifluoroethylene. (PCTFE), ethylene-tetrafluoroethylene copolymer (ETFE), etc. can be used alone or in a blend of two or more.

In the fluororesin containing tetrafluoroethylene units, it is preferable that the content of tetrafluoroethylene units is large from the viewpoint of sliding characteristics, and it is most preferable to use PTFE fiber as a homopolymer.

As the form of the fluororesin fiber of the present invention, either a monofilament composed of one filament or a multifilament composed of a plurality of filaments can be used.

Further, the total fineness of the monofilament or multifilament fiber constituting the thick fluororesin fiber of the present invention is preferably in the range of 10 to 30 times the fineness ratio of the fineness of other threads, more preferably 20 times. It is within the range of ~ 30 times. When the fineness ratio is 10 times or more, ridges and bases can be alternately formed on the surface of the fabric. If it is 30 times or less, the ridges are less likely to be elastically deformed, and only the ridges adhere to the mating material to reduce the contact area, resulting in higher contact pressure, smaller difference between static and dynamic friction coefficients, and efficiency. Water can be drained well, and an unpleasant noise is generated when sliding with the mating member.

Here, the "other thread" refers to a thread other than the above-mentioned thick fluororesin fiber among the constituent threads constituting the sliding cloth, and may be a fluororesin fiber or another fiber described later. good.

Specifically, the total fineness of the monofilament or multifilament fiber constituting the thick fluororesin fiber is preferably 400 dtex or more, and more preferably 800 to 15000 dtex. As a result, yarn fluff and yarn breakage during weaving can be reduced, and process passability is good.

Further, the total fineness of the monofilament or multifilament fiber constituting the fluororesin fiber used as another yarn is specifically preferably 1000 dtex or less, and more preferably 500 dtex or less. Therefore, it has a finer fineness than the thick fluororesin fiber. As a result, yarn fluff and yarn breakage during weaving can be reduced, and process passability is good.

<Other fibers>
In the present invention, other fibers can be used in addition to the above-mentioned fluororesin fibers.

In the present invention, as other fibers, for example, fibers such as polyphenylene sulfide (PPS), polyparaphenylene terephthalamide, polymethphenylene isophthalamide, glass, carbon, nylon, polyester and the like can be used. These are preferably used in one type or two or more types. Above all, it is preferable to use PPS fiber having a low tensile elastic modulus and good high temperature resistance for continuous use. Further, when the non-sliding surface is required to have adhesive performance, it is preferable to use nylon fiber. Further, it is preferable to use polyparaphenylene terephthalamide, glass fiber or the like having good high strength characteristics in a high load usage environment.

As the form of other fibers of the present invention, either a monofilament composed of one filament or a multifilament composed of a plurality of filaments can be used.

Further, the total fineness of the monofilament or multifilament fiber constituting the other fiber of the present invention is specifically preferably 1000 dtex or less, more preferably 500 dtex or less, and thick. It has a relatively finer fineness than fluororesin fibers. As a result, yarn fluff and yarn breakage during weaving can be reduced, and process passability is good.

<Sliding fabric>
In the sliding cloth according to the embodiment of the present invention, on the sliding surface of the cloth, the threads constituting the warp threads (or weft threads) are ridges and other threads containing fluororesin fibers extending in one direction. The base including the above is arranged alternately.

Here, as a form in which the ridges of the fluororesin fibers and the bases of the other threads are alternately arranged in one direction of the sliding surface of the fabric, the thick fluororesin fibers are A and the other threads are B. And C, for example
A1 / B1 A1 / B6,
A1 / B3 / C2 / A3 / B4 / C1,
And so on.

Then, thick fluororesin fibers and other threads can be alternately arranged as warp threads, and either "other threads" or "other threads" can be arranged as weft threads. Further, either "another thread" or "another thread" may be arranged as the warp thread, and thick fluororesin fibers and the other thread may be arranged alternately as the weft thread.

In the present invention, "arrangement of thick fluororesin fibers and other threads alternately" means that the thick fluororesin fibers and one or more other types of fibers are arranged alternately.

In addition, one type or two or more types of other yarns constituting the sliding fabric of the present invention can be used, but one type is preferable. The term "one type" as used herein means one type when the materials constituting the fibers are the same. The same type of polymer refers to polymers having a common main repeating unit of the polymer, such as nylon 66 to each other and polyethylene terephthalates to each other. For example, a combination of a homopolymer and a copolymerized polymer thereof is also acceptable as the same type of polymer in the present invention. Will be done.

When different fibers are used, there is a difference in expansion and contraction performance, so the fewer types of fibers used, the easier it is to set conditions during weaving, and the less likely it is that wrinkles will occur on the surface of the fabric during post-processing due to differences in shrinkage. Passability is improved.

Further, as the form of the sliding fabric of the present invention, any of woven fabric, knitted fabric and embossing of these can be applied, but woven fabric is preferable because it is better to have high density and the like. The woven fabric may be a single woven fabric or a double or more multiple woven fabric, but a double woven fabric is preferable. It is more preferable that the double woven fabric has a sliding surface containing thick fluororesin fibers and other fibers, preferably other surfaces composed of non-fluororesin fibers. The adhesive surface can be used by arranging fibers having good adhesiveness with other materials. As a result, it is possible to achieve both adhesiveness with an adhesive material such as rubber and slidability as a sliding surface.

In particular, when a multiple woven fabric such as a double woven fabric is used as the multiple woven fabric, the warp or weft of the outermost layer on the sliding surface side is composed of thick fluororesin fibers, and the layer below the outermost layer when viewed from the sliding surface side. By arranging other threads in the outermost layer and making the weaving density of the outermost layer smaller than the weaving density of the lower layer, a base composed of other threads is formed between the ridges composed of thick fluororesin fibers. Forming is also a preferred embodiment.

Further, as the structure of the sliding fabric of the present invention, plain weave, twill weave, satin and other structures can be applied, but plain weave and twill weave are preferable because higher density, strength and the like are preferable.

In order to further enhance the durability, it is also possible to impregnate the sliding fabric with a resin and use it. Here, as the resin impregnated with the resin, a thermosetting resin or a thermoplastic resin can be used. Although not particularly limited, the heat-curable resin includes, for example, phenol resin, melamine resin, urea resin, unsaturated polyester resin, epoxy resin, polyurethane resin, diallyl phthalate resin, silicon resin, polyimide resin, and vinyl ester. For thermoplastic resins such as resins and their modified resins, vinyl chloride resin, polystyrene, ABS resin, polyethylene, polypropylene, fluororesin, polyamide resin, polyacetal resin, polycarbonate resin, polyester, polyamide, etc., and even thermoplastic polyurethane, A synthetic rubber such as butadiene rubber, nitrile rubber, neoprene, or polyester, or an elastomer can be preferably used. Among them, resins containing phenol resin and polyvinyl butyral resin as main components, unsaturated polyester resins, vinyl ester resins, polyolefin resins such as polyethylene and polypropylene, and polyester resins have impact resistance, dimensional stability, strength, price, etc. Can be preferably used from. The thermosetting resin and the thermoplastic resin may contain various additives that are usually used industrially for the purpose, application, productivity in the manufacturing process and the processing process, or for improving the characteristics. For example, a denaturing agent, a plasticizer, a filler, a mold release agent, a coloring agent, a diluent and the like can be contained. The main component referred to here is the component having the largest weight ratio among the components excluding the solvent, and in the case of a resin containing phenol resin and polyvinyl butyral resin as main components, these two types of resins are used. It means that the weight ratio is the first and second (in no particular order).

As a method of impregnating the sliding fabric with a resin, when a thermosetting resin is used, the thermosetting resin is dissolved in a solvent to prepare a varnish, and knife coating, roll coating, comma coating, and gravure are used. A method of impregnating and coating a cloth by a coating process or the like is generally used. When a thermoplastic resin is used, melt-extruded laminate or the like is generally used.

It is also possible to add a fluorine-based lubricant or the like to the sliding fabric of the present invention, if necessary.

In the sliding fabric of the present invention thus obtained, only the ridge portion adheres to the mating material and the contact area becomes small, so that the contact pressure becomes high, the difference between the static and dynamic friction coefficients becomes small, and when sliding contact with the mating member No unpleasant noise is generated.

Further, the window glass stabilizer of the present invention is characterized in that the above-mentioned sliding cloth is used for at least a part of the interview member. It is preferable that the interview member is arranged so that the direction in which the convex portion on the sliding surface extends and the moving direction of the window glass are at right angles. As a result, water on the surface of the window glass can be efficiently discharged, and even if water droplets adhere to the window glass due to rainfall or the like and the interview member gets wet, it is unpleasant when the glass surface and the interview member are in sliding contact with each other when the window glass is opened or closed. No sound is generated.

Hereinafter, examples of the present invention will be described together with comparative examples.

The methods for measuring various characteristics used in this embodiment are as follows.

(1) Area of ridges A colorless glass plate with a surface roughness of 0.8 μm is placed on the surface of a fabric in which ridges and bases are alternately formed with a contact pressure of 100 pa, and this is placed on a Keyence microscope VHX-2000. The area of the ridges in contact with the glass plate within the range of 1 cm × 1 cm was measured based on the photograph magnified 30 times. This operation was repeated 5 times, and the average value was calculated to obtain the area of the convex portion.

The surface roughness is a Ra value measured by a Mitutoyo SJ-201 surface roughness measuring machine according to JIS B0601-2001 (the same applies hereinafter).

(2) Area of base A colorless glass plate having a surface roughness of 0.8 μm is placed on the surface of a cloth in which ridges and bases are alternately formed with a contact pressure of 100 pa, and this is placed by a Keyence microscope VHX-2000 for 30. Based on the double-magnified photograph, the projected area of the base within the range of 1 cm × 1 cm that did not come into contact with the glass plate was measured. This operation was repeated 5 times and the average value was calculated to obtain the area of the base.

(3) Height of ridges A colorless glass plate with a surface roughness of 0.8 μm is placed on the surface of the fabric in which the ridges and bases are alternately formed, and this is placed with a Keyence microscope VHX-2000. The distance from the surface of the base to the glass plate within the range of 1 cm × 1 cm was measured at n = 5 and the average value was calculated based on the photograph magnified 30 times.

(4) Fiber fineness The fiber fineness was measured according to JIS L1013: 2010 (chemical fiber filament yarn test method).

(5) Static / dynamic friction coefficient difference (tribo gear surface friction)
Using a surface measuring machine Tribo Gear (TYPE: HEIDON-14DR) manufactured by Shinto Kagaku Co., Ltd., the cloth in a wet state is fixed to a flat indenter (area 10 x 10 mm) with a screw at a moving speed of 100 mm / min and a load of 2.0 kg. The friction coefficient between the sliding woven fabric surface and the glass plate having a surface roughness of 0.8 μm was measured, and the difference between the static and dynamic friction coefficients was determined. The measurement was carried out in a constant temperature and humidity environment (20 ± 2 ° C., 60 ± 5% RH) by sliding in a direction perpendicular to the direction of the ridges on the sliding surface of the woven fabric.

(6) Abnormal noise measurement A window glass stabilizer attached with a sliding cloth surface in which ridges and bases are alternately formed as an interview member and a glass plate that moves up and down at right angles to the ridge direction is used as a window glass storage. Using the window glass opening / closing device installed near the waist opening in the main body, move the window glass up and down in a rainy environment, check the degree of unpleasant abnormal noise for a period of 100,000 times, and check almost none ◎, only a few The ones that are notable are marked with ◯, the ones that are prominent are marked with Δ, and the ones that are jarring are marked with ×.

Example 1
As the sliding layer, a yarn obtained by twisting four 1330 dtex PTFE fibers into a warp yarn was used as a warp yarn, and a 440 dtex PTFE fiber was used as a weft yarn. Further, 220 dtex PPS fibers were used as the base layer for the warp yarn and the weft yarn. Then, the sliding layer is slid on the loom so that the weaving density of the sliding layer is 14 vertical + 62 horizontal / inch (2.54 cm) and the weaving density of the base layer is 84 vertical + 62 horizontal / inch (2.54 cm). A double woven fabric with a twill weave as the layer and a plain weave as the base layer was produced. Then, smelting was performed in a smelting tank at 80 ° C., and the mixture was set at 200 ° C.

The area ratio of the ridges to the base of this woven fabric, the height of the ridges, the static friction coefficient 0.186 and the dynamic friction coefficient 0.146 evaluated by the tribo gear surface friction machine, and the static / dynamic friction coefficient difference results and the window glass. Table 1 summarizes the results of abnormal noise evaluation as an interview member for the stabilizer.

Example 2
110 dtex nylon fibers are used for the warp yarns, 10000 dtex PTFE fibers and 600 dtex PPS fibers are alternately arranged at 1 (lines): 6 (lines) and used for the weft yarns, and the weaving density is 140 vertical + 42 horizontal. A single plain woven fabric was produced with a loom so as to have a / inch (2.54 cm). Then, smelting was performed in a smelting tank at 80 ° C., and the mixture was set at 200 ° C. Then, it was impregnated with a fluororesin by a roll coating method.

Table 1 shows the area ratio of the ridges to the base of this fabric, the height of the ridges, the static / dynamic friction coefficient difference results evaluated by the tribo gear surface friction machine, and the abnormal noise evaluation results as the interview member of the window glass stabilizer. Summarized.

Example 3
110 dtex nylon fiber is used for the warp yarn, and 10000 dtex PTFE fiber, 1000 dtex PET fiber, and 440 dtex PPS fiber are alternately arranged in 1 (piece): 4 (piece): 2 (line) and used for the weft yarn. A single plain woven fabric was produced on a loom so that the weaving density was 140 vertical + 42 horizontal / inch (2.54 cm). Then, smelting was performed in a smelting tank at 80 ° C., and the mixture was set at 200 ° C. Then, it was impregnated with a fluororesin by a roll coating method.

Table 1 shows the area ratio of the ridges to the base of this fabric, the height of the ridges, the static / dynamic friction coefficient difference results evaluated by the tribo gear surface friction machine, and the abnormal noise evaluation results as the interview member of the window glass stabilizer. Summarized.

The following Example 4 shall be read as Reference Example 1 including the table.
Example 4
As the sliding layer, a yarn obtained by twisting eight 1330 dtex PTFE fibers together was used for the front warp yarn, and a 220 dtex PPS fiber was used for the back warp yarn as the base layer. A double knit was produced by a vertical knitting machine so that the number of courses was 10 courses / inch (2.54 cm) and the number of wells was 56 wells / inch (2.54 cm). Then, smelting was performed in a smelting tank at 80 ° C., and the mixture was set at 200 ° C. After that, a roll with a shaft radial direction ridge pattern height of 0.1 mm is used on the surface, and the ridges and bases are alternately extended on the surface of the sliding layer so as to be parallel to the warp yarn direction by an embossing method. The morphology was processed.

Table 1 shows the area ratio of the ridges to the base of this fabric, the height of the ridges, the static / dynamic friction coefficient difference results evaluated by the tribo gear surface friction machine, and the abnormal noise evaluation results as the interview member of the window glass stabilizer. Summarized.

Comparative Example 1
As the sliding layer, 440 dtex PTFE fiber was used for the pile portion, and 600 dtex PET fiber was used for the warp yarn and the weft yarn as the base layer. Then, after weaving with a pile loom so that the height of the pile is 3 mm and the weaving density of the base layer is 60 vertical + 60 horizontal / inch (2.54 cm), the pile is generally woven to prevent the pile from falling out. A resin coating was applied to the back surface opposite to the front surface.

Table 2 summarizes the static / dynamic friction coefficient difference results evaluated by the tribo gear surface friction machine of this woven fabric and the abnormal noise evaluation results as the window glass stabilizer sliding material.

Comparative Example 2
As the sliding layer, 440 dtex PTFE fiber was used for the warp yarn and the weft yarn, and 220 dtex PPS fiber was used for the warp yarn and the weft yarn as the base layer. Then, plain weave with a loom so that the weaving density of the sliding layer is vertical 70 + 64 horizontal / inch (2.54 cm) and the weaving density of the base layer is 70 vertical + 64 horizontal / inch (2.54 cm). A double woven fabric was produced. After that, the same refining and setting treatment as in Example 1 was performed.

Table 2 shows the area ratio of the ridges to the base of this fabric, the height of the ridges, the static / dynamic friction coefficient difference results evaluated by the tribo gear surface friction machine, and the abnormal noise evaluation results as the interview member of the window glass stabilizer. I summarized it in.

Claims (6)

A sliding fabric containing fluororesin fibers, the sliding fabric has a sliding surface, and a plurality of ridges and bases extending in one direction are alternately formed on the sliding surface .
The ridges on the sliding surface are formed by arranging fluororesin fibers.
A sliding fabric in which the fineness of the fluororesin fiber is 10 to 30 times the fineness ratio of other threads. The sliding fabric according to claim 1, wherein the area ratio of the convex portion to the base portion on the sliding surface is 0.1 to 2. The sliding fabric according to claim 1 or 2, wherein the convex portion on the sliding surface has a height of 0.05 to 2 mm. The sliding fabric according to any one of claims 1 to 3 , wherein the sliding surface has a difference between the coefficient of static friction and the coefficient of dynamic friction when sliding in a direction perpendicular to the ridge direction in a wet state. The sliding fabric according to any one of claims 1 to 4 , wherein the sliding fabric is a double woven fabric. A window glass stabilizer using the sliding fabric according to any one of claims 1 to 5 as at least a part of an interview member.