JPH05222661A - Production of tool for suppressing sliding member - Google Patents

Abstract

PURPOSE:To obtain a suppressing tool having excellent elasticity recovery and improved slipperiness by using a flocked part made of folded yarns composed of filaments having different thickness and kinds as a sliding face of a relatively sliding member. CONSTITUTION:Yarn containing at least two kinds of fluorine-based filaments which comprises filament yarn of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer as at least one filament and has different thickness and kinds is twisted in one direction and then at least two yarns containing the twisted yarn are twisted in the opposite direction to form folded yarn. Or, yarn comprising twisted yarn obtained by twisting at least two filaments having the same diameter or the same kind selected from filaments having different thickness or kinds in one direction and two kinds of filaments having different thickness or kinds are twisted in the direction opposite to the above-mentioned twisting to give folded yarns. The folded yarns are used and made into a flocked part such as moquette woven fabric and to give a suppressing tool suitable for door window glass stabilizer of an automobile.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retainer which comes into contact with a relatively sliding member, and in particular, the sliding member has a good sliding property when moving, and also has excellent wear resistance. TECHNICAL FIELD The present invention relates to a retainer for a sliding member that does not damage the sliding surface of the sliding member.

[0002]

2. Description of the Related Art Conventionally, for example, a window glass of a door has been used as a relatively sliding member in an automobile. Especially, in a sashless door type vehicle, as a measure for preventing the vibration of the window glass during traveling or opening / closing of the door, For example, in FIG.
As shown in FIG. 5, a place where the window glass stabilizer (a) as a restrainer is in sliding contact with the window glass (G) surface near the waist opening (c) in the door body (b),
That is, a method of suppressing vibration of the windshield (G) by fixedly arranging it on the outer reinforcement (d), inner reinforcement (e), etc., and slidingly contacting this with the movable windshield (G) surface. Has been taken.

As this type of window glass stabilizer (a), for example, the one shown in FIG. 6 is known (see Japanese Patent Publication No. 61-19446). This has a base body (f) made of an elastic material such as rubber, and short fibers (g) such as fluorine-based fibers and nylon-based fibers as shown in FIG. 7 are transplanted on the sliding contact surface with the window glass surface. It was done.

[0004]

The stabilizer of the above-mentioned structure that has been conventionally used becomes a so-called film-like structure as the number of times the window glass is opened and closed increases the contact area with the glass due to the crushed flocked portion. Sand in this state,
When opening or closing the windshield with dust, etc., sand, dust or other foreign matter may enter between the windshield and the film-shaped flocking area, scratching the windshield surface or generating an unpleasant noise. Was the cause of the problem. For example, when water and volcanic ash adhere to the glass surface, the above-mentioned problems are likely to occur, and solving these problems has been an important issue.

[0005]

Therefore, the present inventors have improved the above-mentioned problems and did not damage the sliding contact surface during sliding of a relatively sliding member with an attached substance. ,
As a result of repeated examinations in order to provide a retainer for a sliding member that has good sliding and abrasion resistance and is less likely to be crushed at the flocked part, as long as a short fiber of a single thickness or a single kind is used as the flocking material, the above is described above. We have come to the conclusion that the problem cannot be solved. On the other hand, it was confirmed that the above-mentioned problems could be solved by using filaments having different thicknesses or different types of filaments at the flocked portion to form a plied yarn, and by flocking this, the present invention was finally reached.

That is, the features of the present invention are (1)
When manufacturing a retainer for a sliding member having a flocked portion whose constituent elements are at least two types of filaments having different thicknesses on the sliding contact surface with a relatively sliding member, the thickness can be varied. A yarn containing at least two different types of filaments is twisted in one direction, and then at least two yarns containing at least one of the twisted yarns are used and twisted in the opposite direction to the above. A method for manufacturing a retainer for a sliding member, which is produced by forming the above-mentioned flocked portion by using a twisted yarn, (2) At least two types having different thicknesses on a sliding contact surface with a relatively sliding member At least one of yarns made of filaments of the same diameter selected from at least two kinds of filaments having different thicknesses when manufacturing a retainer for a sliding member having a flocked portion whose main component is a filament Twist the book in one direction, then Using at least two yarns including the at least one twisted yarn, and using at least two types of filaments having different thicknesses as constituent elements, the yarns are twisted in the opposite direction to the above. A method of manufacturing a retainer for a sliding member, which is produced by forming the above-mentioned flocked part with a twisted yarn formed by: (3) At least two types of sliding contact surfaces with a relatively sliding member having different types When manufacturing a retainer for a sliding member having a flocked portion having a filament as a constituent element, a yarn containing at least two types of filaments of different types is twisted in one direction, and then the twisted yarn A method for manufacturing a retainer for a sliding member, which comprises forming the above-mentioned flocked portion by using a twisted yarn formed by twisting at least two yarns including at least one in the direction opposite to the above, and ( 4) On the sliding contact surface with the relatively sliding member When manufacturing a retainer for a sliding member having a flocked portion having at least two filaments of different types as constituent elements, from the same type of filaments selected from at least two types of filaments of different types At least one of the following yarns is twisted in one direction, and at least two yarns including the at least one twisted yarn are provided, and at least two filaments of different types are used as constituent elements. There is a method for producing a retainer for a sliding member, which is produced by forming the above-mentioned flocked portion by using a twisted yarn formed by twisting the yarn in the direction opposite to the above. At this time, the member that relatively slides means
In relation to the retainer of the sliding member, one in which at least one of them is movable.

Next, the means for solving the problem will be described in more detail with reference to FIGS.

The window glass stabilizer as a restraint means the flocked shape as a sliding contact surface which is in sliding contact with the window glass as a member that slides relatively to the base member (1) such as the elastic member or the synthetic resin as described above. The flocked portion (2) may be provided on the base fabric (3) such as a woven fabric, or may be directly attached to the base body (1) with an adhesive. At this time, the base body (1) and the base cloth (3) may be adhered to each other with an adhesive agent (4) or the like, but may be adhered via a cushioning member such as felt if necessary, and there is no particular limitation. In order to apply the flocked portion (2) to the base fabric (3) such as the above-mentioned woven fabric, at least two types having different thicknesses and / or at least two different types of yarns having filaments as constituent elements There is no particular limitation, such as direct flocking of loops and short fibers of the plied yarn using the above method, but the following method is generally preferred. That is, as a method thereof, as shown in FIG. 2, the fibers constituting the base fabric (3) and the plied yarns constituting the flocked portion (2) are pile-woven or knitted so that the latter has a pile structure. , The pile is cut to form a flocked portion (2) by a so-called cut pile (5). The veil weaving / knitting may be single or double, and if necessary, the face opposite to the pile face (6) is set with an appropriate resin, adhesive, etc. so that the flocked part is more surely prevented from falling off. Good. At this time, it goes without saying that spun yarn and the like are included in the above-mentioned filament category. The fibers constituting the above-mentioned base fabric (3) are not particularly limited, but various fibers other than synthetic fibers such as polyester, polyamide and polypropylene can be used. The resin and adhesive for the above-mentioned set are not particularly limited, but acrylic resins, vinyl acetate resins and the like can be exemplified, and those having heat resistance are more preferable. The above is the cut pile structure, but of course, a so-called loop pile structure in which a single pile knitted fabric is not cut is also included in the present invention.

The height of the hair-implanted portion (2) can be selected from a wide range and is not particularly limited, but usually about 5.0 to 6.5 mm is suitable.

Regarding the filaments according to the present invention, all filaments of the same system but having different main components are included in the filaments of different types. For example, a filament made of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, a filament made of an ethylene-tetrafluoroethylene copolymer, or a polyamide polymer is a nylon 6 filament or a nylon 66 filament. All of them belong to filaments of different types, with different monomers as the main ingredients. However, a filament composed of a polymer whose main component is the same as the raw material has a physical property of M. I It can be said to be a category of filaments of the same type regardless of other properties or raw materials that are not the main component.

When using different types of filaments, the filaments may have the same or different thicknesses. However, when using filaments of the same type in view of the above definition, the effect of the present invention cannot be expected unless the thicknesses are different.

Based on such a concept, the filament according to the present invention can be exemplified by those made from synthetic fibers, chemical fibers, natural fibers and the like. Among them, polyolefins such as polyethylene and polypropylene, nylon 6, nylon 6 and nylon. 66
It is desirable to use synthetic fibers such as polyamide series such as polyethylene series, polyester phthalate such as polyethylene phthalate and polybutylene terephthalate, polyvinyl chloride series, polyacrylonitrile series and fluorine series. Particularly, a fluorine-based filament is suitable, and such a fluorine-based filament is a filament made of a so-called fluorine-based resin. As such a fluorine-based resin, a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (hereinafter referred to as “PFA”), Ethylene-tetrafluoroethylene copolymer (hereinafter "ETF
"E"), tetrafluoroethylene-hexafluoropropylene copolymer, vinylidene fluoride-based polymer, chlorotrifluoroethylene-based polymer, polytetrafluoroethylene, etc. can be exemplified, and these fluorine-based resins are all different types. It is possible to say that it is a resin that does, and PFA and / or ETFE are most suitable. The above-mentioned "ETFE" is a copolymer of ethylene and tetrafluoroethylene or a fluororesin of the copolymer system, and usually has a melting point of 250 to 280 ° C, a density of 1.65 to 2.05, and a melt index (300 ° C, 2160 g) 0.5 to 7.0
Some examples can be given. Of course, these values are merely examples, and are not particularly limited. The above-mentioned "PFA" is a copolymer of ethylene and a perfluorinated ethylenically unsaturated comonomer, especially a perfluoroalkyl vinyl ether, or a fluororesin of the copolymer system, and melt spinning is also possible. Its melting point is 290
Although the thing of -325 degreeC and a density of about 2.00-2.30 can be illustrated, of course, these values are just an example and are not specifically limited. In the present invention, when the same kind of fluorine-based filament is used, at least two kinds of filaments having a large cross-sectional area in a single yarn state, that is, a thick filament, and a small cross-sectional area, that is, a thin filament are used. Must be a twisted yarn. However, in the case of using at least two kinds of filaments of different types to form a plied yarn, there is no particular limitation on the thickness of the filaments, in short, at least two filaments of different types are used.
You can use seeds. The means for producing such a plied yarn may be a plied yarn, and the plied yarn may be produced stepwise, and there is no particular limitation. At this time, in the case of using a twisted yarn using the same type of filament, the value of the cross-sectional area of the thick filament and the thin filament in the single yarn state is not particularly limited, and may be appropriate, but when using a filament having a circular cross section Is a thin filament with a diameter of 5 to 1
00 μ, preferably 20 to 50 μ, and the diameter of the thick filament can be 50 to 300 μ, and preferably 80 to 200 μ, and of course, such a value is not limited and is merely an example.

When using filaments of different types, there is no particular limitation, but filaments having a circular cross section of approximately the same diameter can be exemplified as preferable ones.

Further, a concrete example of forming a plied yarn using at least two kinds of filaments of different kinds will be described. In this case, when at least two types of filaments, one type of filament and the other type of filament, are used to form a plied yarn, the value of the cross-sectional area of the filament in the single yarn state is not particularly limited, and may be appropriately determined. However, when a filament having a circular cross section is used, the diameter of one filament is 18 to 100.
[mu], preferably 25 to 50 [mu], and the diameter of the other filament can be 13 to 100 [mu], preferably 10 to 50 [mu]. Of course, such a value is not limited and is merely an example.

Here, as at least two kinds of filaments of different kinds, for example, PFA filament and ET
An example of preferable numerical values when using a FE filament to form a plied yarn is shown. Denier value of PFA filament is 20
In the case of d, a preferable denier value of the ETFE filament can be selected from a wide range, but usually 10 to 10
An example is about 30d. (Here, when the diameter in the case of a circular cross section is calculated, the PFA filament 20d is almost ETFE.
It has the same diameter as the filament 17d. ) In this case, the preferred denier value of the PFA filament can be about 5 to 150 d, and the preferred denier value of the ETFE filament can be about 2 to 125 d. Of course, the above denier values should be limited. Instead, it may be set to an appropriate value if necessary.

The mixing ratio of PFA and ETFE is not particularly limited, but in general, a value of ETFE of 15% by volume or more, preferably about 16 to 50% by volume can be exemplified. When the mixing ratio is low, the strength of the waist is insufficient and it is difficult to improve wear resistance. On the other hand, when the mixing ratio is high, the sliding performance may decrease. is there. The above is the description of the preferred embodiment in the case of using the PFA and ETFE filaments to form a plied yarn, and it goes without saying that the present invention is not limited to these items.

Such filaments may be combined into monofilaments and / or multifilaments to form yarns. In the case of multifilaments, the total thickness in the multifilament is the concept of thick filaments and thin filaments of the present invention. Not related to As described above, the term "thickness of filament" used in the present invention refers to a single yarn state.

The total number of filaments constituting the plied yarn is not particularly limited, but if it is too large, it becomes too thick, and conversely if it is too small, it becomes too thin, which may adversely affect the work surface for forming the flocked portion. Therefore, it is usually selected from the range of about 50 to 150, though it depends on the diameter of the filament.

When filaments of the same type and different in thickness are used, the proportion of thin filaments and thick filaments in the total number of filaments may be appropriate, but usually the former 5 for the latter one. In the case of a yarn containing a plurality of thin filaments and / or a plurality of thick filaments, even if the plurality of filaments have the same diameter, or those having different diameters are mixed. May be.

On the other hand, when filaments of different types are used, the proportion of the filaments of one type and the filaments of the other type in the total number of filaments may be appropriate, but normally the former 10 filaments are used. The latter 1 to 100 can be exemplified, and the filament of the third component may be appropriately mixed. In the case of a plied yarn including a plurality of filaments of one type and a plurality of filaments of the other type, the plurality of filaments may have the same diameter or may have a mixture of different diameters. ..

Since the present invention has the above-described structure, when the twisted yarn is produced stepwise as compared with the conventional one, compared to the retainer for the sliding member, which is produced by using the twisted yarns in the same direction, The flocked portion is less likely to be crushed even under pressure, the return when the pressure is released is good, and it is hard to cause fatigue and has good wear resistance. (Note that the above-mentioned denier value is not exactly a thin filament immediate low denier value because the filament density is related, but in the case of the same material, it can be said that a thin filament is immediately low denier value. The same denier value cannot be said even if the thickness of the filament made of the other type and the filament of the other type is the same, and conversely the same denier value can be obtained even if the thickness is different.).

In the present invention, it is necessary to carry out twisting in at least two stages, and the stepwise twisting method will be exemplified below.

First, as the first step (1) When using filaments of the same kind, using a yarn containing at least two kinds of filaments (each or any one of which may be a monofilament) having different thicknesses (2) ) At least two filaments of different types (each or either may be a monofilament)
(3) When using filaments of the same type, when using at least one filament consisting of filaments of the same diameter selected from at least two types of filaments having different thicknesses ( 4) There are four possible cases in which at least one yarn consisting of filaments of the same type selected from at least two types of filaments of different types is used, and these yarns are first S twisted or Z twisted. Twist in one direction.

Then, as the second stage, the following (a) and (b)
There are two examples.

(A) In the case of the above (1) or (2), at least two yarns (at least one of which may be a monofilament) including at least one of the twisted yarns are used for ply twisting (b) In the case of the above (3) or (4), at least two yarns (at least one of which may be a monofilament) including at least one of the twisted yarns, and at least two kinds of filaments as constituent elements Use yarn to ply twist.

In this case, it is necessary to carry out Z twist or S twist in the opposite direction to the first step of twisting.

In the present invention, the twisting is carried out step by step in this way, and it is free to carry out the setting appropriately at each step or any step or the like at a temperature of time. The number of twists in each stage is also free and is not particularly limited, but preferably 50 to 200 turns / m in the first stage and about 50 to 200 turns / m in the second stage. However, although it is desirable to set the number of twists in the first stage and the second stage in a similar range, this is not particularly limited. Also the first,
In addition to the two steps, an appropriate twisting step may be further performed in the middle of the first and second steps or before and after the step. The present invention relates to a method of producing a plied yarn in this way.

[0028]

EXAMPLES Examples of the present invention will be given below, and the quality and performance thereof will be compared with Comparative Examples as follows.

Example [Design of base fabric] Use of spantetron with two 30th warp yarns and two 40th weft yarns, the number of driven yarns is 44 yarns / inch, 55 yarns / inch length [Flocked portion design] PFA multifilament 1920d
/ 96f (20d × 96) (The diameter of the single yarn is 3
6 μ) and ETFE filaments as shown in Table 1 and P
Using FA filaments with the mixing ratio shown in the table,
Also, using a ply-twisted yarn that is set in an oven at 250 ° C for 1 hour, the number of shots is 8 vertical / cm, 11 horizontal / cm

[0030]

[Table 1]

According to the above design, a long moquette weave (double pile weave) is performed so that the pile length is 5.5 mm, the base cloth width is 31.0 mm, and the flock width is 9.0 mm, and cut to make a so-called cut pile fabric. did. After that, acrylic-
Using a styrene copolymer, set it on the side opposite to the pile side (for example, resin processing) and cut it to a specified size,
A stabilizer was prepared by bonding the base made of an elastic member with an adhesive.

At this time, as shown in FIG. 3, the plied yarn (20) of Example 4 had one PFA multifilament of 960d / 48f and one ETFE multifilament of 200d / 12f (a single yarn of each filament ( 21), (2
2)) is twisted in the Z direction at 120 turns / m to make a 1160d yarn (23), and then two such 1160d yarns (23) are twisted in the S direction at 120 turns / m. Therefore, it is created in a so-called stepwise manner. At this time, such a twisted yarn is designed so that when it is used for the flocked part, the S twist remains in the spliced part of the flocked part and the twist does not remain in the upper part. In this example, both the Z twist and the S twist are twisted at 120 times / m, so that the initial Z twist is scarcely left at the final stage. Moreover, also about Examples 1-3 and Example 5,
Created in the same way.

Further, as shown in FIG. 4, the plied yarn (30) of Example 6 was first 480d / 24f (20d × 24).
2 multifilaments (31) and one 150d monofilament (32) are twisted in the S direction at 120 times / m to form a yarn (33) of 1110d, and then two such yarns (33) of 1110d. And one 150 d monofilament (34) were twisted in the Z direction at the same 120 times / m, and were produced in a so-called stepwise manner. Incidentally, the twisted state in the flocked state when used for the flocked portion is the same as above.

As Comparative Example 1, a plied yarn (40) made in the Z direction instead of the S direction will be given (see FIG. 5).

Comparative Example 2 PFA multifilament as a flocking part, 2400 d /
A stabilizer was produced in the same manner as in the example except that 72f (33.3d × 72) (a single yarn having a circular cross section and a diameter of 47 μm) was used and twisted only by Z twist.

Comparative Example 3 Polytetrafluoroethylene multifilament 2400d / 180f (13.3d × 180) as a flocking part
A stabilizer was prepared in the same manner as in the example, except that the present invention (a single yarn having a circular cross section and a diameter of a single yarn of 29 μ) was used.

The test results for these are described below.

[0038]

[Table 2]

From the above results, it is understood that the present invention has little change in the friction coefficient under the above-mentioned conditions.

[0040]

[Table 3]

[0041]

[Table 4]

Next, regarding Examples 4 and 6 and Comparative Example 1,
Other measurement results are shown in Table 5.

[0043]

[Table 5]

In particular, the plied yarn (20), (3
Since 0) has a shape as shown in FIGS. 3 and 4, even if a weight is applied to the flocked portion (2), the threads do not come into close contact with each other, and there is a gap between the threads. Since it is formed, it can be said that it is less likely to form a film than conventional products.

As an example of the holding member for the sliding member of the present invention, the window glass stabilizer for the door of the automobile is mentioned, but other cleaning members for copiers, printers, facsimiles, washing steps, printing steps, etc. The brushing member and the like can be exemplified, and the present invention can be applied to any restraint not limited to this, as long as the members facing each other relatively move and press against the surface of this member.

[0046]

[Effect] From the above results, it can be seen that the retainer for the sliding member according to the present invention has excellent characteristics. That is, the thing of the present invention has better slipperiness than the conventional one, and there is very little risk of scratching the surface of the member that slides relatively, and in addition, since it has excellent elastic recovery, the flocked part It has an excellent effect that it is hard to be crushed and it is hard to reduce fatigue. In addition, because it has good wear resistance, the risk of foreign matter such as wear powder adhering to the surface of the relatively sliding member is extremely low, and it is superior in all respects to the conventional one. is there.

Further, because of such characteristics, when the present invention is used for, for example, a window glass or the like, an unpleasant noise is extremely unlikely to occur, and widespread demand is expected in the future.

[Brief description of drawings]

FIG. 1 is a sectional view of a stabilizer shown as an example of a retainer according to the present invention.

FIG. 2 is a sectional view showing the flocked portion.

FIG. 3 is an enlarged view of a plied yarn applied to a flocked portion.

FIG. 4 is an enlarged view of another plied yarn applied to the flocked portion.

FIG. 5 is an enlarged view of a plied yarn according to a comparative example.

FIG. 6 is an explanatory view of a stabilizer as a conventional retainer.

FIG. 7 is an enlarged view of a filament applied to the flocked portion.

[Explanation of symbols]

 1 Base 2 Flocked part 3 Base cloth 4 Adhesive 5 Cut pile 6 Opposite side

Continuation of front page (51) Int.Cl. ⁵ Identification number Internal reference number for FI FI technical display location D03D 27/00 A 7199-3B (72) Inventor Katsuhiko Oikawa 163 Morikawahara-cho, Moriyama-shi, Shiga Gunze Stock Company Shiga Research In-house (72) Yukio Mori Hirano, Konku-shi, Aichi, Hirano, Aichi Prefecture, Gunze Corporation Engineering Plastics Business Center (72) Inventor Shigeru Nakamura, 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Person Yoshinori Kamiya 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.

Claims (6)

[Claims] 1. A method for manufacturing a pressing member for a sliding member having a flocked portion whose constituent elements are at least two kinds of filaments having different thicknesses on a sliding contact surface with a relatively sliding member. , A yarn containing at least two kinds of filaments having different thicknesses is twisted in one direction, and then at least two yarns including at least one of the twisted yarns are used,
A method for producing a retainer for a sliding member, which is produced by forming the above-mentioned flocked portion by a twisted yarn formed by twisting in the opposite direction. 2. A method for manufacturing a pressing member for a sliding member having a flocked portion having at least two types of filaments having different thicknesses on its sliding contact surface with a relatively sliding member. , At least one yarn consisting of filaments of the same diameter selected from at least two types of filaments having different thicknesses is twisted in one direction, and then at least 2 including the at least one twisted yarn The above-mentioned flocked portion is created by using a twisted yarn obtained by twisting in the opposite direction to the above, using a yarn that is a yarn of a book and that has at least two types of filaments with different thicknesses as constituent elements. A method for manufacturing a retainer for a sliding member. 3. A method for manufacturing a retainer for a sliding member having a flocked portion having at least two types of filaments of different types on a sliding contact surface with a relatively sliding member Yarns containing at least two kinds of filaments different from each other are twisted in one direction, and then at least two yarns including at least one of the twisted yarns are used and twisted in the opposite direction. A method for manufacturing a retainer for a sliding member, which is produced by forming the above-mentioned flocked portion by using a twisted yarn. 4. A method of manufacturing a retainer for a sliding member having a flocked portion having at least two types of filaments of different types on a sliding contact surface with a relatively sliding member. At least one yarn of filaments of the same kind selected from at least two kinds of filaments different from each other is twisted in one direction, and then said at least 1
At least two yarns including twisted yarns, and using a twisted yarn formed by twisting in the opposite direction to the above, using yarns having at least two types of filaments of different types as constituent elements , A method for manufacturing a pressing member for a sliding member, which comprises forming the above-mentioned flocked portion. 5. The sliding member according to claim 1, wherein at least two kinds of filaments having different thicknesses or at least two kinds of filaments different in kind are fluoropolymers. A method of manufacturing a retainer. 6. A tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, wherein at least one of at least two types of filaments having different thicknesses or at least two types of filaments having different types is a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer. A method for manufacturing a retainer for a sliding member according to any one of 1.