JP4182681B2 - Wiping tape - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiping tape that is preferably used for wiping dirt on the surface of electronic equipment parts such as a hard disk (magnetic disk) and magnetic tape, and dirt on the end face of an optical fiber ferrule.
[0002]
[Prior art]
For electronic device parts such as hard disks and magnetic tapes and optical fiber end faces, the presence or absence of dirt such as oil film or dust on the surface has a significant effect on performance. It is provided so that the product can be cleaned.
[0003]
Conventionally, as a wiping means in such a wiping process, for example, a wiping tape obtained by slitting a cloth using ultrafine fibers as proposed in Japanese Utility Model Publication No. 1-160959 is used. Since the wiping tape made of this ultrafine fiber fabric has less wiping residue on the surface to be treated compared to the wiping tape usually made of fine fibers, it can exhibit higher wiping performance.
[0004]
However, recent electronic device parts such as hard disks are required to have a higher degree of cleanliness after wiping in order to further improve their performance. For this reason, even with a fabric using ultrafine fibers, it is difficult to sufficiently respond to the above-described recent demands with the conventional wiping tape.
[0005]
Japanese Patent Application Laid-Open No. 2-139449 proposes a wiping cloth that limits the specific volume of a woven or knitted fabric made of crimped yarn made of polyester and polyamide split fibers. However, this is a quantification of the wiping performance based on the absorption rate and amount of water and oil, and it is difficult to obtain sufficient wiping performance as a wiping material in the manufacturing process of electronic information equipment actually used. . That is, in the case of wiping by wiping cloth in a tape shape or mechanical movement of an object in a certain direction, unwiping is unavoidable.
[0006]
Further, although a wiping cloth in which nap is imparted to a fabric made of ultrafine fibers of 0.5 denier or less is proposed in Japanese Patent Laid-Open No. 4-263648, it is not suitable for practical use in a clean room or the like due to dust generation.
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide a wiping tape that can improve the cleanliness after wiping more than ever, and in particular, captures minute particles by using the multi-leaf cross-sectional yarn of the present invention. It is another object of the present invention to provide a wiping tape that does not leave any wiping in the wiping operation.
[0008]
Another object of the present invention is to provide a wiping tape with a small amount of dust generation that has a high level of wiping without an insulation breakdown and is suitable for use in an industry where generation of static electricity is required and cleanliness is required. It is in.
[0009]
Still another object of the present invention is to provide a wiping tape having no wiping residue in applications where wiping properties in a certain direction are required, such as a manufacturing process of an electronic device.
[0010]
Still another object of the present invention is to provide a wiping tape that does not leave any end surface wiping and cleans the light attenuation as much as possible in the operation of cleaning the end of the optical fiber ferrule of the optical fiber connector portion.
[0011]
[Means for Solving the Problems]
The present invention adopts the following configuration in order to achieve the above object. That is, it is made of a woven fabric formed by using a multifilament yarn composed of multi-leaf cross-section fibers having a single fiber fineness of 0.01 to 3 dTex as at least one of a warp yarn and a weft yarn.The multilobal cross-section fiber is a multilobal cross-section fiber that satisfies the following requirements (1) to (3) in its cross section:Wiping tape characterized by that.
(1) The leaves extend radially so that the gap between the leaves gradually increases from the center toward the tip of the leaves,
(2) The number of leaves is 3-50,
(3) The length ratio from the center to the tip of the leaf to the lowest end of the groove formed between adjacent leaves is 0.1 to 0.9.
[0014]
[2[1] The multi-filament yarn containing antistatic fiber is arranged on at least one of the warp yarn or the weft yarn.]The wiping tape described.
[0015]
[3The multifilament yarn composed of the multifilament cross-sectional fibers of the weft yarn is a raw yarn and / or a substantially non-torque crimped yarn, and the warp yarn is a multifilament yarn containing antistatic fibers. [1]Or in [2]The wiping tape described.
[0016]
[4[1] to [1], wherein the number of filaments of the weft yarn is larger than the number of filaments of the warp yarn3] The wiping tape in any one of.
[0017]
[5The ratio of the minimum diameter of the constraining point of the warp yarn by the warp yarn to the maximum diameter of the non-constraining point in the woven structure of the woven fabric is 1.5 to 5 times, and the woven structure is substantially multileaf. [1] to [1], which are floating structures of raw filaments and / or non-torque crimped yarns composed of cross-sectional fibers.4] The wiping tape in any one of.
[0018]
[6The warp yarn is a wiping tape made of a raw yarn of a multifilament yarn having a single fiber fineness of 0.5 to 5.0 dTex, and made of a synthetic fiber having a tape contraction rate of 10% or less in hot water at 98 ° C. [1]-[5] The wiping tape in any one of.
[0019]
[7The wiping tape is formed by heat-cutting both edges in a tape shape having a thickness of 0.1 to 0.7 mm and a width of 3 to 1,800 mm, and a tensile strength in the longitudinal direction of the wiping tape is 40 to 70 kg / 5 cm, elongation is 20-50%, [1]-[6] The wiping tape in any one of.
[0020]
[8] The particle generation amount of the wiping tape according to JIS B9923 6.2 (1.1) is 20 particles / ft or more with 5 μm or more.^Three ・ 100cm² The above [1] to [1], wherein the wiping tape is hermetically packed in a resin film bag.7] The wiping tape in any one of.
[0021]
[9[1] to [1], wherein the wiping tape is wound around a core in a roll shape.8] The wiping tape in any one of.
[0022]
[10[1] to [1], which are used for wiping dirt of electronic equipment parts while being pulled and moved by a rotary drive roller system.9] The wiping tape in any one of.
[0023]
[11[1] to [10], which are used for wiping off the ferrule end surface contamination of the optical fiber connector portion.]ofThe wiping tape in any one.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
For the warp yarn and / or the weft yarn constituting the wiping tape of the present invention, a multifilament yarn made of multi-leaf type cross-section fibers having a single fiber fineness of 0.01 to 3 dTex is used.
[0025]
The multifilament yarn composed of the multilobal cross-section fibers used in the present invention can be obtained by, for example, dissolving or decomposing and removing all the components of the peelable split composite fiber composed of two different polymers.
[0026]
In the present invention, the polymer used for producing a multifilament yarn composed of multi-leaf shaped cross-section fibers is not particularly limited, and any polymer can be used as long as it can be produced by a usual method. Can also be used. For example, polyester, polyamide, polyvinyl alcohol, and polyolefin can be exemplified, and among them, polyamide is particularly preferably used.
[0027]
In the present invention, the multilobal cross-section fiber is a multilobal cross-section fiber having a single fiber fineness of 0.01 to 3 dTex, preferably 0.05 to 2 dTex.
[0028]
Furthermore, it is important that the cross-sectional shape of the multilobal cross-section fiber satisfies the following requirements.
[0029]
(1) The leaves extend radially so that the gap between the leaves gradually increases from the center toward the tip of the leaves.
[0030]
(2) The number of leaves is 3-50.
[0031]
(3) The ratio of the length b from the center to the tip of the leaf a to the bottom end of the groove formed between adjacent leaves is 0.1 to 0.9.
[0032]
1 and 2 illustrate cross-sectional shapes. FIG. 1 is a preferred cross-sectional shape example of the present invention, and FIG. 2 is an unsuitable example. a indicates the length from the center to the tip of the leaf, and b indicates the length from the center to the lowest end of the groove.
[0033]
When it is outside the above range, for example, when it is outside the range of the above items (2) and (3), it becomes difficult to produce the fibers having the multi-sectioned structure of the item (1). It becomes difficult to obtain a fabric with high wipeability.
That is, when the fiber contacts the dirt surface, the fine dirt is scraped off at the tip of the leaf, and fine particles are captured in the groove (gap) formed between the adjacent leaves. Is expressed.
[0034]
The multifilament yarn comprising the multi-leaf shaped cross-section fiber of the present invention may be raw yarn, but it is more preferable to use a substantially non-torque crimped yarn. For example, methods for obtaining such a substantially non-torque crimped yarn include an indentation stuffer method, a gear method, a two-stage heater provisional method, and the like, but a two-stage heater provisional method is preferably used.
[0035]
This two-stage heater tentative method performs a second heat treatment following the first tentative tentative method, and the tentative twisted yarn is continuously heat-treated in an overfeed state, thereby reducing the tensile deformation resistance. The shrinkage component is canceled out, and a temporary twisted yarn having a large deformation resistance and a fine and strong crimp component remains is obtained. That is, a temporary twisted yarn having a small torque and stretchability and excellent in bulkiness and thermal dimensional stability can be obtained.
[0036]
In the present invention, “substantially non-torque” means that the number of twists is 5 turns / m or less, but also includes heat-set and small torque.
[0037]
By using this substantially non-torque crimped yarn, the resulting fabric is a fabric whose surface is substantially covered with multi-lobed cross-section fibers, and fine particles are captured by the multi-lobed cross-section fibers. In the wiping operation, a wiping tape without wiping residue can be obtained.
[0038]
The wiping tape of the present invention is preferably constructed using raw yarn and / or substantially non-torque crimped yarn as warp yarn and / or weft yarn, but raw yarn and / or substantially non-torque crimped yarn. More preferably, the yarn is used as a weft yarn.
[0039]
In the wiping tape of the present invention, in addition to the raw yarn and / or the substantially non-torque crimped yarn, other multifilament yarns can be arranged on the warp yarn and / or the weft yarn, preferably the warp yarn. . As the multifilament yarn used, for example, a normal multifilament yarn having a single fiber fineness of 0.1 dTex or more can be used. Specifically, a multifilament yarn having a single fiber fineness of preferably 0.5 to 5 dTex and a total fineness of preferably 20 to 60 dTex can be used.
[0040]
In the present invention, the polymer used for making the multifilament yarn is not particularly limited, and is produced by the same ordinary method as the polymer used for the multifilament yarn composed of the multileaf fiber. Any polymer can be applied if possible. For example, polyester, polyamide, polyvinyl alcohol, polyolefin and the like can be exemplified, and among them, polyamide is particularly preferably used.
[0041]
Moreover, it is preferable that this multifilament yarn contains antistatic fiber. As the antistatic fiber, for example, a block polyether amide or graft polyether amide (modified polyamide) containing a polyalkylene ether segment is mixed and spun with polyamide or polyester, and the modified polyamide is mixed with the polyamide or polyester in the fiber axial direction. Filaments mixed as long and narrow dispersed particles, filaments made of a polymer containing a conductive material such as carbon black or carbon fiber, particularly from a polymer containing a conductive material in the core component of a core-sheath type composite fiber And filaments and metal filaments.
[0042]
One of the features of the wiping tape of the present invention is that the ratio of the minimum diameter of the constraining point of the warp yarn to the maximum diameter of the non-constraining point is 1.1 to 5 times, and the woven structure is substantially The non-torque crimped yarn floating structure. Multifilament yarns composed of multi-lobed cross-section fibers have a low convergence property, and therefore have the property of being constrained to spread at the unconstrained portion. Become.
[0043]
In the present invention, the ratio of the minimum thickness of the constraining points to the maximum thickness of the non-constraining points is preferably 1.3 to 4.5 times, more preferably 1.5 to 4 times. When the ratio is less than 1.1 times, the gap between the single fibers or the fabric is insufficient, and the warp yarn is lifted on the surface of the fabric, so that fine particles are not captured. Since it is too large, fine particles are not captured, and the wiping residue tends to occur frequently. Therefore, in order to prevent warp yarn from appearing as much as possible on the surface of the fabric and to obtain good wiping performance, the raw yarn and / or crimped shape is obtained by substantially non-torque.
[0044]
In the present invention, the minimum thickness of the restraint points and the maximum thickness of the unconstraint points are measured as follows. That is, the minimum thickness of the restraint point and the maximum thickness of the non-constraint point are determined from a microphotograph of a multifilament yarn composed of multi-leaf shaped cross-section fibers restrained by warp yarn or weft yarn at a magnification of 100 times on the fabric surface. Measure at 10 places and measure the average value.
[0045]
In this case, the raw yarn of the above-mentioned multifilament yarn having a single fiber fineness of 0.5 to 5 dTex is preferably used for the warp yarn. This warp yarn helps to stabilize the shape of the fabric, and suppresses the elongation in the warp direction of the fabric. Warp yarn becomes a woven fabric with little dimensional change due to the heat history from the raw machine to the finished product, and after tape formation, the shrinkage rate in hot water treatment at 98 ° C. is preferably 10% or less, more preferably 6% or less. preferable. If the shrinkage is too large, the wiping tape is deformed by the tension applied during the wiping operation, and the wiping performance tends not to be exhibited. The shrinkage rate was measured by the following method.
[0046]
Two tapes melt-cut to a size of 1 cm in width and 20 cm in length in the warp direction of the fabric were prepared, one of which was treated in hot water at 98 ° C. for 10 minutes, and the other was prepared without treatment. Next, a 10 g load was applied to each lower end, the length before and after the treatment was measured, and the average value of n3 was calculated.
[0047]
Shrinkage rate (%) = [(A−B) / A] × 100
A: Length of tape before processing
B: Length of tape after processing
In the present invention, the weave structure may be plain weave, twill weave, satin weave, etc., but in order to make the floating structure of the weft yarn more effective, weaving structure in which one thread floats on the fabric surface like satin weave. It is preferable to do.
[0048]
As a particularly preferred embodiment of the present invention, raw multifilamentary cross-section fibers and / or substantially non-torque crimped yarns are mainly raised on the surface of the fabric, and other multifilament yarns such as antistatic fibers are used. Can exist in the fabric.
[0049]
According to the present invention, the raw yarn and / or the substantially non-torque crimped yarn that is formed from the multi-leaf-shaped cross-section fibers raised on the surface of the woven fabric constituting the wiping tape removes dirt such as an oil film on the surface. Since it has an action of scraping off at the tip of the leaf and capturing dirt in a groove formed between adjacent leaves, it can be wiped off so as not to leave dirt on the surface to be treated. In addition, by providing antistatic fibers on one side, generation of static electricity can be suppressed and the amount of dust generated can be reduced.
[0050]
The wiping tape of the present invention can be produced by heat-cutting both edges of a woven fabric having a thickness of preferably 0.1 to 0.7 mm into a tape having a width of 3 to 1,800 mm. And it is preferable that the tensile strength of a wiping tape longitudinal direction is 40-70 kg / 5cm, and elongation is 20-50%.
[0051]
The tape with both edges cut in this way has the problem that the fibers tend to generate dust from the edges, but the edges of the fibers are heat-cut as described above, so that the fiber ends are mutually connected. It is possible to control dust generation. Furthermore, since the multifilament raw yarn and / or crimped yarn made of multi-lobed cross-section fibers are long fibers without fluff, the multifilament itself does not self-generate dust, and should be a wiping tape with excellent dust-free properties. Can do.
[0052]
The wiping tape of the present invention further has an elongation in the longitudinal direction of the tape of 20 to 50%, so that a moderate elongation is generated at the time of wiping and the frictional force is released, so that the single yarn of the multileaf cross-section fiber Since no cutting occurs and no new dust is generated, the cleanliness can be further improved. Moreover, since the thickness of the wiping tape is 0.1 to 0.7 mm and the tensile strength in the longitudinal direction is 40 to 70 kg / 5 cm, the single-thread breakage of the multi-leaf shaped cross-section fiber due to the above elongation does not occur, which is excellent. Enables cleanliness wiping.
[0053]
FIGS. 3A and 3B each show a wiping tape according to an embodiment of the present invention.
[0054]
The wiping cloth shown in FIG. 3 (A) is a wiping tape 1 in which a substantially non-torque crimped woven fabric composed of multi-leaf-shaped cross-section fibers is narrowly slit by heat cutting, and is wound on the winding core 2 Is wound up as a wound body 10. The wiping cloth shown in FIG. 3B is a wiping tape 1 in which the same woven fabric is slit wide by heat cutting, and is similarly wound around the core 2 as a roll-shaped winding body 10.
[0055]
These wiping tapes 1 do not necessarily have to be wound up in a roll shape as shown in the figure, but when wound up in a roll shape, even a long tape of, for example, 40 to 50 m can be stored very compactly. Moreover, if it rolls up in roll shape, when using by a method like FIG. 6, the wiping operation of resin film surfaces, such as a magnetic tape, can be made easy.
[0056]
In the wiping operation shown in FIG. 6, the winding body 30 on which the resin film 5 before the wiping operation is wound is set on the unwinding machine 6, and the resin film 5 is continuously pulled out from the winding body 30 to the winding machine 7. On the other hand, the winding body 10 of the wiping tape 1 is set on the rewinding machine 8 above, and the wiping tape 1 is pulled out from the winding body 10 and wound on the winding machine 9. The wiping tape 1 and the resin film 5 run in directions opposite to each other. When the pressure-bonding roll 4 is pushed down from the upper surface of the wiping tape 1 to be bonded to the resin film 5, the wiping tape 1 is applied to the surface of the resin film 5. The wiping action is performed while relatively moving with the frictional force.
[0057]
7A and 7B show a case where the wiping tape wound up in a roll shape is used for the wiping operation on the hard disk surface.
[0058]
In this wiping operation step, the winding body 10 of the wiping tape 1 is set on the rewinding machine 8 above the hard disk 15 set on the rotating shaft, and the wiping tape 1 is traversed from the winding body 10 across the upper surface in the radial direction of the hard disk 15. It winds up on the winder 9 so that Then, when the pressing roll 14 is pushed down from the upper surface of the wiping tape 1 and pressed onto the upper surface in the radial direction of the hard disk 15, the wiping tape 1 performs a wiping action while relatively moving on the surface of the hard disk 15 with a predetermined frictional force. It has become.
[0059]
Further, the wiping tape 1 exhibits the wiping performance based on the principle as shown in FIGS. 8A and 8B due to the function of the multifilament yarn in which the multilobal cross-sectional fibers are converged.
[0060]
If the wiping performance is out of the range of the multi-leaf cross-sectional shape, a sufficient effect cannot be obtained.
[0061]
As shown in FIG. 8 (A), the multifilament yarn F in which the multilobal cross-section fibers f are converged has a groove gap G formed therein. When the surface to be treated is wiped off with the wiping tape 1 formed from the fabric of the yarn F made of the multifilament yarn, the oil film and dirt are scraped off by the tip of the leaf, and the scraped oil film and dirt D are trapped by the groove. It will be in the state. Therefore, the surface to be treated can be wiped without leaving any dirt, and the oil film and dirt D are not left on the surface of the wiping tape 1, so that it can be wiped repeatedly.
FIGS. 9A and 9B show a case where the end surface of the optical fiber ferrule is wiped with the surface of the wiping tape wound up. FIG. 9A is a view of the ferrule end of an optical fiber, 20 is a ferrule, 21 is its end face, and 22 is an optical fiber. FIG. 9B shows a wiping operation. By rubbing on the surface of the wiping tape 25 on which the ferrule end face of the optical fiber is wound, a ferrule end face having a small amount of light attenuation can be obtained.
[0062]
Furthermore, the wiping tape 1 is substantially free of dust because the raw yarns and / or crimped yarns composed of multifilament yarns having multi-lobed cross-section fibers are long fibers having no fluff. It has characteristics.
[0063]
The wiping tape 1 of the present invention has a thickness of 0.1 to 0.7 mm woven using raw yarns composed of multifilament yarns of the above-mentioned multileaf cross-sectional fibers and / or substantially non-torque crimped yarns, preferably Is formed by slitting a woven fabric of 0.2 to 0.5 mm in a tape shape with a width of 3 to 1800 mm, and has a tape physical property of a tensile strength in the tape longitudinal direction of 40 to 70 kg / 5 cm and an elongation of 20 It is made to be -50%.
[0064]
Thus, since it has an elongation (breaking elongation) of 20 to 50% in the longitudinal direction of the tape, the single yarn of the multi-leaf shaped cross-section fiber may be cut by generating elongation due to the frictional force at the time of wiping. There will be no dust generation. If the elongation in the longitudinal direction of the tape is too small, the multilobal cross-section fiber tends to break a single yarn, and if it is too large, the elongation becomes too large and good wiping cannot be performed. In the present invention, the tape thickness is 0.1 to 0.7 mm and the tensile strength in the longitudinal direction is 40 to 70 kg / 5 cm. This is to prevent this from occurring.
[0065]
Therefore, the wiping tape of the present invention can enable wiping operation with higher cleanliness by providing the tape characteristics as described above.
[0066]
As for the wiping tape used in the wiping process in the hard disk manufacturing process that is produced particularly in a clean room, as shown in FIGS. 4 and 5, the resin film bag 3 is processed after being made substantially dust-free. It is better to pack it inside.
[0067]
Here, the fact that the wiping tape is substantially dust-free means that 20 particles / ft of particles having a dust generation amount of 5 μm or more measured according to JIS B9923 6.2 (1.1).^Three  ・ 100cm²  Or less, more preferably 5 / ft^Three  ・ 100cm²  It is the following. The wiping tape 1 thus made substantially dust-free is sealed in the resin film bag 3 as shown in FIGS. 4 and 5 and opened in a clean room where the hard disk manufacturing process is placed, and then the wiping process is performed. If it is used, it can be easily applied to a hard disk manufacturing process or the like for making the dust-free state.
[0068]
The method for making the wiping tape substantially dust-free as described above is not particularly limited. However, it is preferable to clean the wiping tape with pure water in a washing machine. The tape may be stored and sealed in a resin film bag.
[0069]
The wiping tape of the present invention is used for cleaning various devices and the like, and is particularly preferably used for wiping off dirt on the surface of electronic equipment parts such as magnetic disks and magnetic tape and dirt on the end of an optical fiber ferrule.
[0070]
【Example】
Example 1
33dTex, 26 filament long polyamide fiber is used for the warp yarn, and the split yarn type multifilament yarn of the raw yarn 56dTex, 18 filament is used for the weft yarn. In the form, peeled split type fibers in which the polyester component is arranged in the surrounding form, and the single fiber fineness after the polyester elution / removal is 0.89 dTex). Used together. The fabric density was vertical density: 178 / inch, horizontal density: 108 / inch, and the texture was 8 satin. The obtained raw machine was heat-treated in the presence of alkali to completely remove the polyester component of the weft yarn, and the weft yarn was made into an 8-leaf section yarn. The eight-leaf-shaped cross-sectional shape radially extends so that the width of the leaf gradually decreases from the center toward the tip of the leaf, that is, the gap between the leaves gradually increases toward the tip of the leaf. The ratio from the center to the tip of the leaf to the lowest end of the groove formed between adjacent leaves was 0.6.
Next, this woven fabric was dry heat treated at 160 ° C. for 40 seconds to finish.
[0071]
The obtained woven fabric has a warp density of 206 yarns / inch, that is, the number of filaments per inch is 206 × 26 = 5,356, and the horizontal density is 116 yarns / inch, that is, 116 × 18 × 4. = 8,352 lines / inch. The ratio of the number of warp yarns to weft yarns was about 1.6 times. Also, when the surface of the fabric was photographed at a magnification of 100 using a Sony video microscope, the minimum diameter thickness of the weft thread restraint point (7 mm) and the maximum diameter thickness of the unconstraint point (13 mm) The ratio was about 1.9 times and the thickness was 0.3 mm.
[0072]
Furthermore, this woven fabric was heat-cut into a tape shape having a width of 70 mm in the vertical direction to obtain a wiping tape. The obtained tape (tensile strength: 62 kg / 5 cm, elongation: 25%, shrinkage: 1.5%) was a weft floating structure. As a result of evaluating the wiping property, there was no wiping residue at all, the wiping property was grade 5 and there was no vertical streak, and excellent performance was confirmed.
[0073]
The wiping property was evaluated as follows. Silicone oil SH200 (manufactured by Toray Dow Corning Silicone Co., Ltd.) is dropped onto an approximately 5 mg glass plate with an injection needle, and a sample (wiping cloth) fixed to one end face of a cylindrical load having a diameter of 45 mm and a weight of 1 kgf is glass plate It is placed on top and moved at a speed of 1 m / min to wipe off the silicone. Next, a toner for a dry copying machine (SF-76T: manufactured by Sharp Corporation) is sprinkled on a glass plate, and the toner is compressed air (1 Kgf / m).²  ). Cellotape (registered trademark) (manufactured by Sekisui Chemical Co., Ltd.) is attached to the surface of the glass plate, the residual toner on the glass plate is peeled off, and the degree of toner adhering to the cellotape (registered trademark) is determined. Visual evaluation was made in five stages, with the toner not adhering at all (the glass plate completely wiped off the silicone) grade 5 and the toner remaining in a very large amount being grade 1. Furthermore, the adhesion state of the remaining toner was also evaluated based on the presence or absence of vertical stripes. The presence or absence of the vertical stripes coincided with the presence or absence of the wiping residue for the purpose of removing the abrasive in the actual hard disk manufacturing process.
[0074]
The amount of dust generation is 9 particles / ft with 5μm or more particles.^Three  ・ 100cm²Met.
[0075]
(Comparative Example 1)
  77dTex (round cross section), 40 obtained by using the same fiber as in Example 1 for the warp yarn,PhiWeaving was performed in the same manner as in Example 1 using the polyester fiber yarn of lament, and the same processing as in Example 1 was performed except for the alkali treatment. The obtained woven fabric has a warp density of 200 pieces / inch, that is, the number of filaments per inch is 200 × 26 = 5,200, and the horizontal density is 101 pieces / inch, that is, 101 × 40 = 4,040. Book / inch. The ratio of the number of warp and weft filaments was about 0.8.
[0076]
The weft of the resulting woven fabric has a floating structure due to crimping, but the ratio of restraint points and non-restraint points is 0.9 times. In the second grade, vertical muscles were recognized, and sufficient performance was not obtained. This is presumably because the number of weft yarns is small, the single yarn fineness is large, and the cross-sectional shape is round.
[0077]
(Example 2)
The warp yarn uses 56dTex, 18 filament nylon long fiber, and the weft yarn consists of 55dTex, 18 filament nylon / polyester release split type multifilament yarn processed by a two-stage heater temporary method. Six crimped yarns having a substantially non-torque of turns / m were used. This crimped yarn is a peelable split type composite fiber (single yarn fineness after elution of a polyethylene terephthalate component: 1.1 dTex) in which polyethylene terephthalate is arranged so as to surround nylon in a 16-leaf shape. Using each of these warp yarns and weft yarns, 5 pieces of satin having a warp density of 130 yarns / inch and a weft density of 100 yarns / inch were woven into a raw machine. This raw machine was heat-treated in the presence of alkali to completely remove the polyethylene terephthalate component, and the weft yarn was broken down into 16-leaf cross-section yarns.
The obtained 16-leaf-shaped cross-sectional yarn has leaves spreading radially from the center, and the length ratio from the center to the tip of the leaf to the lowest end of the groove formed by the adjacent leaves is: It was 0.7. Further, by treating with hot water at 130 ° C., densification by yarn shrinkage and washing were performed simultaneously. Next, this woven fabric was dry heat treated at 160 ° C. for 40 seconds to finish.
[0078]
The obtained woven fabric has a warp density of 143 / inch, that is, the number of filaments per inch is 143 × 18 = 2,574, and the horizontal density is 113 / inch, that is, 113 × 18 × 6 = 12. 204 / inch. The number of filaments of the weft yarn was about 4.7 times that of the warp yarn. In addition, when the surface of the fabric was photographed at a magnification of 100 using a Sony video microscope, the ratio of the width of the weft constraint point (16 mm) to the maximum thickness (30 mm) of the unconstraint point was about 1. 0.9 times and a thickness of 0.5 mm.
[0079]
Further, the woven fabric was cut into a tape shape with a width of 70 mm in the vertical direction to obtain a wiping tape. The obtained tape (tensile strength: 59 kg / 5 cm, elongation: 37%, shrinkage: 2.1%) had a sufficient weft floating structure. As a result of evaluating the wiping property, there was no wiping residue at all, the wiping property was grade 5 and there was no vertical streak, and excellent performance was confirmed.
The amount of particles generated is 5 / ft.^Three  ・ 100cm²Met.
[0080]
【The invention's effect】
According to the present invention, the multifilament yarns composed of multi-lobed cross-section fibers are constrained by the warp yarns, so that the unconstrained portion is widened and has a floating structure. Due to the excellent wiping property based on the multifilament yarn and the long fiber, a wiping tape having a more excellent wiping property in a certain direction can be obtained. In particular, a wiping tape that is used in a clean room and has high reliability as a wiping material in the manufacturing process of electronic information devices that are mechanically wiped off rather than manually by humans can be obtained. This effect is increased by using raw yarn and / or substantially non-torque multi-leaf shaped cross-section fibers for multifilament yarns composed of multi-leaf shaped cross-section fibers. In particular, by using a substantially non-torque crimped yarn, the surface of the fabric becomes a woven fabric substantially covered with multi-lobed cross-section fibers, and dirt is scratched at the apex of the leaves of the multi-leaf cross-section fibers. A wiping tape is obtained which is taken and captured by the groove and has no wiping residue in the wiping operation.
[0081]
In addition, when a multifilament yarn made of antistatic fibers is used for the other yarn, generation of static electricity can be suppressed and the amount of dust generation can be reduced.
[0082]
Furthermore, when both edges are heated, it has low dustiness, and on top of that, when the elongation in the tape longitudinal direction is further set to 20 to 50%, moderate elongation occurs during wiping. Single leaf breakage does not occur in the multi-leaf shaped cross-section fiber, the cleanliness is not lowered due to new dust generation, the tape thickness is 0.1 to 0.7 mm, and the tensile strength in the longitudinal direction is 40 to In the case of 70 kg / 5 cm, the single leaf breakage of the multi-leaf shaped cross section fiber does not occur, and a wiping operation with higher cleanliness becomes possible.
[Brief description of the drawings]
FIG. 1 illustrates a cross-sectional shape of the present invention.
FIG. 2 shows a cross-sectional shape that is not suitable for the present invention.
FIGS. 3A and 3B are perspective views showing a wiping tape according to an embodiment of the present invention, respectively.
FIG. 4 is a perspective view showing another embodiment in which the wiping tape of the present invention is hermetically packed in a resin film bag.
5 is a cross-sectional view taken along arrow XX in FIG.
FIG. 6 is an explanatory view showing an example of use of the wiping tape of the present invention.
7A and 7B show another example of use of the wiping tape of the present invention, FIG. 7A is a schematic side view, and FIG. 7B is a plan view.
FIGS. 8A and 8B are explanatory views showing the operation of the wiping tape of the present invention.
FIGS. 9A and 9B are ferrule diagrams, and FIG. 9B is an explanatory diagram showing the operation of the wiping tape of the present invention.
[Explanation of symbols]
1: Wiping tape
2: Winding core
3: Resin film bag
4: Crimp roll
5: Resin film
6: Rewinding machine
7: Winder
8: (wiping tape) rewinding machine
9: (Wiping tape) winder
10: Winding body (of wiping tape)
14: Crimp roll
15: Hard disk
20: Ferrule
21: Ferrule end face
22: Optical fiber
25: Wiping tape

Claims (11)

The multifilament yarn fiber fineness is made from a multi-lobed cross section fibers 0.01~3dTex Ri Do from fabrics woven using at least one of the warp or weft yarn, the multi-lobed cross section fibers, the cross-section in wiping tape and said multi-lobed cross section fibers der Rukoto meet the requirements of the following (1) to (3).
(1) The leaves extend radially so that the gap between the leaves gradually increases from the center toward the tip of the leaves,
(2) The number of leaves is 3-50,
(3) The length ratio from the center to the tip of the leaf to the lowest end of the groove formed between adjacent leaves is 0.1 to 0.9. The wiping tape according to claim 1, wherein a multifilament yarn containing antistatic fibers is arranged on at least one of the warp yarn or the weft yarn. The multifilament yarn composed of the multifilament cross-sectional fibers of the weft is a raw yarn and / or a substantially non-torque crimped yarn, and the warp yarn is a multifilament yarn containing antistatic fibers. The wiping tape according to claim 1 or 2 . The wiping tape according to any one of claims 1 to 3 , wherein the number of filaments of the weft yarn is greater than the number of filaments of the warp yarn. The ratio of the minimum diameter thickness of the constraining point of the warp yarn by the warp yarn in the woven structure of the woven fabric to the maximum diameter thickness of the non-constraining point is 1.5 to 5 times, and the woven structure is substantially a multi-leaf cross section. The wiping tape according to any one of claims 1 to 4 , wherein the wiping tape has a floating structure of a raw filament of multifilament yarn and / or a non-torque crimped yarn. The warp yarn is a wiping tape made of raw yarn of multifilament yarn having a single fiber fineness of 0.5 to 5.0 dTex, and made of a synthetic fiber having a tape contraction rate of 10% or less in 98 ° C. hot water. The wiping tape according to any one of claims 1 to 5 . The wiping tape is formed by heat-cutting both edges into a tape shape having a thickness of 0.1 to 0.7 mm and a width of 3 to 1,800 mm, and a tensile strength in the longitudinal direction of the wiping tape is 40 to 70 kg. The wiping tape according to any one of claims 1 to 6 , wherein the wiping tape has an elongation of / 5 cm and an elongation of 20 to 50%. The dust generation amount of the wiping tape according to JIS B9923 6.2 (1.1) is set to 20 particles / ft 3 · 100 cm 2 or less with a particle size of 5 μm or more, and the wiping tape is hermetically packed in a resin film bag. The wiping tape according to any one of claims 1 to 7 . The wiping tape according to any one of claims 1 to 8 , wherein the wiping tape is wound around a winding core in a roll shape. 10. The wiping tape according to any one of claims 1 to 9 , wherein the wiping tape is used for wiping dirt of electronic equipment parts while being pulled and moved by a rotary drive roller system. The wiping tape according to any one of claims 1 to 10 , wherein the wiping tape is used for wiping off ferrule end face contamination of an optical fiber connector portion.

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