JPH11276397A - Wiping tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiping tape excellent in cleaning effect after wiping, reduced in dust generation and suitably used for wiping off the surface stains of an electronic equipment component or the like such as a magnetic disk and a magnetic tape, and also to provide the wiping tape for capturing fine particles without wiping leftover in wiping work by using non-torque crimped threads. SOLUTION: This wiping tape is textile fabrics composed by using multi- filament threads composed of extra fine fibers whose single fiber fineness is less than 1 denier for at least one of warp and weft. The multi-filament threads composed of the extra fine fibers are the practically non-torque crimped threads, the ratio of the total size of the warp and the weft is 2-10 times, the total size of the practically non-torque crimped threads composed of the extra fine fibers is made larger and the floating structure of the extra fine fibers is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiping tape which is preferably used for wiping the surface of electronic parts such as a hard disk (magnetic disk) and a magnetic tape, and more particularly to a rotary drive. The present invention relates to a wiping tape which is preferably used for wiping off stains on electronic device parts and the like while being pulled and moved by a roller system.

[0002]

2. Description of the Related Art In the case of electronic equipment components such as hard disks and magnetic tapes, the presence or absence of dirt such as an oil film or dust on the surface thereof has a significant effect on performance. A process is provided so that the product can be cleaned.

Conventionally, as a wiping means in such a wiping step, for example, a wiping tape in which a cloth using ultrafine fibers as proposed in Japanese Utility Model Laid-Open No. 1-160959 is slit has been used. The wiping tape made of the cloth using ultrafine fibers has less residual wiping on the surface to be treated than the wiping tape made of fibers having a fineness, and thus can exhibit higher wiping performance.

[0004] However, recent electronic device components such as a hard disk are required to further improve their performance.
It is required that the cleanliness after wiping be further enhanced. For this reason, it is becoming difficult for conventional wiping tapes to sufficiently respond to the recent demands, even if the fabric is made of ultrafine fibers.

Japanese Patent Application Laid-Open No. 2-139449 proposes a wiping cloth in which the specific volume of a woven or knitted fabric composed of crimped yarns made of split fibers of polyester and polyamide is limited. However, this is a numerical value of the wiping performance in terms of the absorption rate and amount of water and oil, and it is difficult to obtain sufficient wiping performance as a wiping material in a manufacturing process of an electronic information device actually used. . That is, in the case of wiping by a tape-shaped wiping cloth or a mechanical movement of an object in a certain direction, unwiped parts cannot be avoided.

Further, a wiping cloth in which naps are added to a cloth made of ultrafine fibers of 0.5 denier or less has been proposed in Japanese Patent Application Laid-Open No. Hei 4-263648. Not suitable.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a wiping tape capable of improving the cleanliness after wiping more than ever, and more particularly, to a substantially non-torque winding tape of the present invention. It is an object of the present invention to provide a wiping tape in which fine particles are captured by using a crimped thread, and there is no wiping residue in a wiping operation.

Another object of the present invention is to provide a wiping tape which suppresses the generation of static electricity and has a high wiping property without dielectric breakdown and which is suitable for use in industries requiring cleanliness and which has a small amount of dust. Is to provide.

It is still another object of the present invention to provide a wiping tape having no wiping residue in applications requiring wiping in a certain direction, such as in a manufacturing process of electronic equipment.

[0010]

The wiping tape of the present invention is a woven fabric comprising a multifilament yarn composed of ultrafine fibers having a single fiber fineness of 1 denier or less for at least one of a warp yarn and a weft yarn. The multifilament yarn composed of ultrafine fibers is a substantially non-torque crimped yarn, and the ratio of the total fineness of the warp yarn and the weft yarn is 1.5 to
It is a wiping tape characterized by a factor of ten.

The wiping tape of the present invention also includes the following preferred embodiments.

(1) A multifilament yarn containing an antistatic fiber is arranged on at least one of the warp yarn or the weft yarn.

(2) The weft yarn is a substantially non-torque crimp yarn, and the warp yarn is a multifilament yarn containing antistatic fibers.

(3) The total fineness of the substantially non-torque crimped yarn is larger than the total fineness of the multifilament yarn containing the antistatic fiber.

(4) In the weaving structure of the woven fabric, the ratio of the minimum diameter at the constrained point of the weft yarn to the maximum diameter at the non-constrained point by the warp yarn is 1.1 to 5 times, and the woven structure structure is substantially The structure must be a non-torque crimped yarn floating structure.

(5) The ratio of the number of warp yarns to the number of weft yarns per unit area is 1:10 or more.

(6) The number of the weft yarns is larger than the number of the warp yarns.

(7) The warp yarn has a single fiber fineness of 0.5 to 0.5
5.0 denier raw silk, made of synthetic fiber having a shrinkage of 10% or less in hot water at 100 ° C.

(8) The wiping tape has a thickness of 0.1 mm.
The tape is formed by heat cutting both edges into a tape having a width of 1 to 0.7 mm and a width of 3 to 1,800 mm, and has a tensile strength in the longitudinal direction of the tape of 40 to 70 kg / 5 c.
m, elongation is 20 to 50%.

(9) JIS B9923 6.2 (1.
The particles according to 1) above have a particle size of 5 μm or more at 20 particles / ft ³ · 100 cm ² or less, and the tape is hermetically packed in a resin film bag.

(10) The tape is wound around a core in a roll.

(11) Used for wiping stains of electronic equipment parts while being pulled and moved by a rotary drive roller system.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION A warp yarn and / or a weft yarn constituting a wiping tape of the present invention is a substantially non-torque crimped yarn of a multifilament yarn composed of ultrafine fibers having a single fiber fineness of 1 denier or less. Used.

The multifilament yarn comprising the ultrafine fibers used in the present invention can be obtained by, for example, dissolving or decomposing and removing the sea component of a sea-island composite fiber comprising two different polymers. Of the splittable conjugate fibers composed of different polymers.

In the present invention, the polymer used for producing a multifilament yarn comprising ultrafine fibers is:
The polymer is not particularly limited, and any polymer can be used as long as it can be formed by a usual method. For example, polyester, polyamide, polyvinyl alcohol, polyolefin and the like can be exemplified, and among them, polyester is particularly preferably used.

In the present invention, the ultrafine fibers are fibers having a single fiber fineness of 1 denier or less, preferably 0.5 denier or less, more preferably 0.3 denier or less, and particularly preferably a single fiber fineness of 0.05 to less. Ultra fine fibers of 0.2 denier are used.

The smaller the single fiber fineness, the larger the surface area of the fiber, and the more small voids in the yarn or woven fabric.
Fine particles are captured in the small voids, and excellent wiping properties are exhibited. When the single fiber fineness is small, when the wiping tape comes into contact with the object, the fiber is easily buckled, and the dirt component is easily captured. For this buckling property, polyamide is more advantageous than polyester in terms of flexural rigidity.

The multifilament yarn comprising the ultrafine fibers of the present invention is used to increase the cover factor of the multifilament yarn comprising the ultrafine fibers in the wiping tape, and therefore, a substantially non-torque crimped yarn is used. It is preferably used. Examples of a method for obtaining such a substantially non-torque crimped yarn include an indentation stuffer method, a gear method, and a two-stage heater temporary twisting method. The two-stage heater temporary twisting method is preferably used.

The two-stage heater temporary twisting method is a method in which a secondary heat treatment is performed after the primary temporary twisting. The temporary twisting yarn is continuously heat-treated in an over-feed state, so that the elongation deformation drag is obtained. The crimp component having a small crimp is canceled out, and a temporary yarn having a large deformation resistance and a fine and strong crimp component remaining is obtained. That is, it is possible to obtain a false twist yarn having small torque and elasticity, and excellent bulkiness and thermal dimensional stability.

In the present invention, substantially non-torque means that the number of twists is 5 turns / meter or less.

By using the substantially non-torque crimped yarn, the obtained woven fabric becomes a woven fabric whose surface is substantially covered with ultrafine fibers, and fine particles are captured by the ultrafine fibers. Then, a wiping tape without wiping is obtained.

The wiping tape of the present invention is constituted by using a substantially non-torque crimped yarn for the warp yarn and / or the weft yarn. The substantially non-torque crimped yarn is preferably used for the weft yarn. Used.

In the wiping tape of the present invention, in addition to the substantially non-torque crimped yarn, other multifilament yarns can be arranged on the warp yarn and / or the weft yarn, preferably on the weft yarn. The multifilament yarn used is optional except that the ratio of the total fineness to the substantially non-torque crimped yarn composed of the ultrafine fibers is 1.5 to 10 times, preferably 3 to 7 times. Yes, for example
An ordinary multifilament yarn having a single fiber fineness of 1 denier or more can be used. Specifically, a multifilament yarn having a single fiber fineness of preferably 0.5 to 5 denier and a total fineness of preferably 20 to 60 denier can be used.

In the present invention, the polymer used for producing the multifilament yarn is not particularly limited, and the polymer may be formed by the same ordinary method as the polymer used for the multifilament yarn comprising the ultrafine fibers. Any possible polymer can be applied. For example, polyester, polyamide,
Examples thereof include polyvinyl alcohol and polyolefin, and among them, polyamide and polyester are particularly preferably used.

The multifilament yarn preferably contains antistatic fibers. As antistatic fiber,
For example, a block polyetheramide or a grafted polyetheramide (modified polyamide) containing a polyalkylene ether segment is mixed and spun with a polyamide or polyester, and the modified polyamide is mixed in the polyamide or polyester as dispersed particles elongated in the fiber axis direction. Filament, a filament made of a polymer containing a conductive substance such as carbon black or carbon fiber, particularly a filament made of a polymer containing a conductive substance in the core component of a core-sheath composite fiber, a metal filament, and the like. No.

One of the features of the wiping tape of the present invention is that the ratio of the total fineness of the warp yarn to the weft yarn is 1.5 to 10 times,
Preferably, the total fineness of the multifilament yarn composed of ultrafine fibers is increased, and a crimped yarn having substantially no torque is used. This results in a woven fabric whose surface is substantially covered with microfibers.

In the present invention, the ratio of the number of filaments per unit area of the multifilament yarn constituting the warp yarn and the weft yarn is preferably set to 1:10 or more, and more preferably, the warp yarn is formed. 10 or more, more preferably 15 wefts per 1 filament
As described above, by setting the number to 20 or more, the effect of the present invention can be further promoted. When this ratio is small, the surface coverage by the weft thread is small, and wiping may be left in the wiping work in a certain direction. Here, the number of filaments per unit area is represented by the weave density of warp yarn or weft yarn (lines / inch).

In the wiping tape fabric of the present invention, a substantially non-torque crimped yarn made of ultrafine fibers is preferably used as a weft yarn in order to improve wiping performance by moving in a certain direction, that is, in the length direction of the tape. Preferably, it is used. In this manner, a woven fabric structure is obtained in which the substantially non-torque crimped yarn used for the weft yarn floats on the woven fabric surface.

The weft emerging from the surface of the woven fabric is constrained by the warp yarn. In the present invention, the ratio of the minimum thickness of the constrained point to the maximum thickness of the non-constrained point is preferably 1.1 to 5 times. It is more preferably 1.3 to 4 times, and still more preferably 1.5 to 3 times. If it is less than 1.1 times,
Insufficient voids between single fibers or fabrics, warp yarns float on the woven fabric surface, so fine particles are not captured.If it is more than five times, fine voids are too large, fine particles are captured. There is a tendency that unwiped residue frequently occurs. Therefore,
It is obtained by making the warp yarn as little as possible on the woven fabric surface and obtaining a good wiping performance by making the crimped form substantially non-torque.

In the present invention, the minimum thickness of the constrained point and the maximum thickness of the non-constrained point are measured as follows. That is, on the surface of the woven fabric, a multifilament yarn composed of ultrafine fibers constrained by warp or weft and a multifilament yarn composed of unconstrained ultrafine fibers were obtained from a micrograph taken at a magnification of 100 times. And the maximum thickness of the unconstrained point are measured at 10 points, and the average value is measured. Here, the constraint point refers to a portion where the warp yarn and the weft cross, and the non-restraint point refers to a portion where these do not intersect.

In this case, the above-mentioned multifilament yarn having a single fiber fineness of 0.5 to 5 denier is preferably used as the warp yarn. This warp yarn is useful for stabilizing the form of the woven fabric and suppresses elongation of the woven fabric in the warp direction. Furthermore, it is a yarn with little dimensional change when it receives the heat history from the greige machine to the finished product.
A yarn having a shrinkage of 10% or less in the hot water treatment at 00 ° C is preferable, and a yarn of 6% or less is more preferable. If the shrinkage is too large, the wiping tape is deformed by the tension applied during the wiping operation, and the wiping tape tends not to exhibit sufficient wiping performance. As a means for stabilizing the dimensions, heat treatment and fixing in the finishing step can be used separately.

In the present invention, the weave structure may be any of plain weave, twill weave and satin weave, but in order to make the floating structure of the weft more effective, one of the yarns rises to the surface of the fabric like satin weave. A woven structure is preferred.

In a particularly preferred embodiment of the present invention, a substantially non-torque crimped yarn composed of ultrafine fibers mainly emerges on the surface of the woven fabric, and other multifilament yarns such as antistatic fibers are embedded inside the woven fabric. It can be an existing structure.

In the present invention, with such a configuration, the substantially non-torque crimped yarn made of microfibers floating on the surface of the woven fabric constituting the wiping tape can remove dirt such as an oil film on the surface from the multifilament yarn. Since it has an action of sucking into countless voids inside by capillary action, it can be wiped off without leaving dirt on the surface to be treated, and it can be made not to leave dirt on the wiping tape surface side. Further, by disposing the antistatic fiber on one side, the generation of static electricity can be suppressed and the amount of dust generation can be reduced.

The wiping tape of the present invention has a thickness of 0.1
A woven fabric of 織物 0.7 mm can be produced by heat cutting both edges into a tape having a width of 3-1800 mm. And, the tensile strength in the longitudinal direction of the wiping tape is 40 to 70 kg / 5 cm, and the elongation is 20 to 50.
%.

The tape having both edges cut as described above has a problem that the fiber is likely to generate dust at the cutting end from the edge portion. However, since the edge is heat-cut as described above, the fiber is cut. The terminals can be fused together to control dust generation. Furthermore, since the multifilament crimped yarn composed of ultrafine fibers is a long fiber without fluff, the multifilament itself does not generate dust, and a wiping tape excellent in dustlessness can be obtained.

The wiping tape of the present invention further has an elongation of 20 to 50% in the longitudinal direction of the tape. Since there is no breakage and no new dust is generated, the cleanliness can be further improved. Moreover, the thickness of the wiping tape is set to 0.1 to 0.1.
7mm, tensile strength in the longitudinal direction 40-70kg / 5c
Since the length is set to m, breakage of single fibers of the ultrafine fibers due to the elongation does not occur, and wiping with excellent cleanliness can be performed.

FIGS. 1A and 1B show a wiping tape according to an embodiment of the present invention.

The wiping cloth shown in FIG. 1A is a wiping tape 1 in which a woven fabric of a substantially non-torque crimped yarn made of ultrafine fibers is narrowly slit by heat cutting. The winding body 10 is wound up. The wiping cloth shown in FIG. 1 (B) is a wiping tape 1 obtained by slitting the same woven fabric widely by heat cutting, and is also wound on a winding core 2 as a roll-shaped winding body 10.

The wiping tape 1 does not necessarily need to be wound up in a roll as shown in the figure, but if it is wound up in a roll, even a long tape of, for example, 40 to 50 m can be stored extremely compactly. . Further, if the film is wound up in a roll shape, the operation of wiping the surface of a resin film such as a magnetic tape can be facilitated when used in a method as shown in FIG.

In the wiping operation shown in FIG. 4, the winding body 30 on which the resin film 5 before the wiping operation has been wound is set in the rewinding machine 6, and the resin film 5 is removed from the winding body 30.
While continuously winding it up on the winder 7 while pulling out
The winding body 10 of the wiping tape 1 is set in the upper rewinding machine 8, 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 opposite directions to each other. When the pressing roll 4 is pressed down from the upper surface of the wiping tape 1 and pressed against the resin film 5, the wiping tape 1 is fixed on the surface of the resin film 5. The wiping action is performed while moving relative to each other with the frictional force.

FIGS. 5A and 5B show a case where a wiping tape wound up in a roll is used for wiping the hard disk surface.

In this wiping operation step, the winding body 10 of the wiping tape 1 is set in the rewinding machine 8 above the hard disk 15 set on the rotating shaft, and the winding body 1
From 0, the wiping tape 1 is wound around the winding machine 9 so as to cross the upper surface in the radial direction of the hard disk 15. When the pressing roll 14 is pressed down from the upper surface of the wiping tape 1 and pressed against the upper surface in the radial direction of the hard disk 15, the wiping tape 1 performs the wiping action while relatively moving on the surface of the hard disk 15 with a predetermined frictional force. Has become.

The wiping tape 1 exhibits the wiping performance based on the principle shown in FIGS. 6A and 6B by the function of the multifilament crimped yarn in which a large number of ultrafine fibers are bundled.

This wiping performance cannot be sufficiently obtained when the fineness of the single fiber is larger than 1 denier.

As shown in FIG. 6A, the multifilament crimped yarn F in which a number of ultrafine fibers f are bundled has an infinite number of gaps G formed therein. When the surface to be treated is wiped off by the wiping tape 1 formed from the woven fabric of the crimped yarn F composed of the multifilament yarn, the wiped oil film and dirt D are formed by the capillary phenomenon to the crimped yarn F composed of the multifilament yarn. It moves to the internal gap G and is trapped there. Therefore, wiping can be performed without leaving dirt on the surface to be processed, and since no oil film or dirt D remains on the surface of the wiping tape 1, repeated wiping can be performed.

Further, the wiping tape 1 has a substantially dust-free property because the crimped yarn composed of the ultrafine multifilament yarn is a long fiber having no fluff and does not self-dust. ing.

The wiping tape 1 of the present invention has a thickness of 0.1 to 0.7 m woven using a substantially non-torque crimped yarn made of the multifilament yarn of the ultrafine fibers.
m, preferably 0.2 to 0.5 mm woven fabric, 3 to 1 width
The tape is formed by slitting into a tape shape at 800 mm, and the tape has a physical property such that the tensile strength in the longitudinal direction of the tape is 40 to 70 kg / 5 cm and the elongation is 20 to 50%.

As described above, 20 to 50% in the longitudinal direction of the tape.
(Elongation at break), the elongation is generated by the frictional force at the time of wiping, so that the single thread of the ultrafine fiber does not cause cutting, so that no new dust is generated. . If the elongation in the longitudinal direction of the tape is too small, the ultrafine fibers are liable to break single yarns. If the elongation is too large, the elongation becomes too large, and good wiping cannot be performed. In the present invention, the thickness of the tape is 0.1 to 0.7 mm and the tensile strength in the longitudinal direction is 4 mm.
The reason for setting the thickness to 0 to 70 kg / 5 cm is to prevent breakage of single yarn in the ultrafine fibers with respect to the frictional force.

Therefore, the wiping tape of the present invention has the above-mentioned tape characteristics, so that a wiping operation with higher cleanliness can be performed.

As shown in FIGS. 2 and 3, the wiping tape used in the wiping process in the hard disk manufacturing process, which is produced in a clean room, is processed into a substantially dust-free state and then subjected to a resin film. It is good to pack in the bag 3 hermetically.

Here, that the wiping tape is in a substantially dust-free state means that 20 particles having an amount of dust of 5 μm or more measured according to JIS B99236.2 (1.1) / 20 particles / ft ³ ··· 100 cm ² or less, more preferably 5 / ft ³ · 100 cm ² or less. The wiping tape 1 in such a substantially dust-free state is hermetically packed in a resin film bag 3 as shown in FIGS. 2 and 3, which is opened in a clean room where a hard disk manufacturing process is placed, and a wiping process is performed. In this case, the present invention can be easily applied to a hard disk manufacturing process or the like in which a super-dust-free state is provided.

The method for keeping the wiping tape in a substantially dust-free state as described above is not particularly limited. However, it is preferable that the wiping tape be completely washed using pure water in a washing machine. Preferably, the wiping tape is housed and sealed in a resin film bag.

The wiping tape of the present invention is used for cleaning various devices and the like, and is particularly suitably used for wiping the surface of electronic devices such as magnetic disks and magnetic tapes.

[0065]

(Example 1) 50 denier, 40 yarns in warp yarn
Filament polyester filament (single fiber fineness: 1.
25d), and the weft is made of a 100 denier, 18 filament sea-island type polyester multifilament yarn processed by a two-stage heater.
A non-torque crimped yarn having a twist number of 3 turns / meter was used. The crimped yarn is a fiber (polyethylene terephthalate) having an island component and an alkali-soluble polyester comprising a copolymer of terephthalic acid and 5-sodium sulfoisophthalic acid as an acid component of the sea component as an acid component of the polyester (after elution of the sea component). Single yarn fineness: 0.06 d). Using two warp yarns and two weft yarns, eight satins having a warp density of 140 yarns / inch and a weft density of 140 yarns / inch were woven into a greige machine. The obtained greige was heat-treated in the presence of an alkali to completely remove the sea component, and the weft was decomposed into a fine thread. Next, this fabric is
Finished by dry heat treatment at 0 ° C. for 40 seconds.

The obtained woven fabric had a vertical density of 155 filaments / inch, that is, the number of filaments per inch was 15
5 × 40 = 6,200 lines, horizontal density: 150 lines /
Inches, ie 150 × 18 × 70 × 2 = 37,8
00 pieces / inch. The ratio of the number of filaments of the warp yarn to the weft yarn was about 61. The total fineness of the warp yarn is 50 × 155 = 7,750D, and the total fineness of the weft is (100 × 0.9) × 2 × 150 = 27,000D.
The fineness ratio of the weft yarn to the warp yarn was 3.50.
When the surface of the woven fabric was photographed at 100 × magnification using a video microscope manufactured by Sony Corporation, the minimum diameter of the weft constrained point (7 mm) and the maximum diameter of the non-constrained point (21 mm) were obtained. ) The ratio was 3 times, and the warp yarn was hardly visible.

Further, this woven fabric was 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)
%), The warp yarn was invisible due to the floating structure of the weft yarn. As a result of evaluation of the wiping properties, there was no wiping residue, the wiping properties were grade 5 and there was no vertical streak, and excellent performance was confirmed.

The wiping property was evaluated as follows.
Silicone oil SH200 (Dow Corning Toray)
Silicone Co., Ltd.) was dropped on a glass plate of about 5 mg with a syringe needle, and a sample (wiping cloth) fixed to one end of a cylindrical load having a diameter of 45 mm and a weight of 1 kgf was placed on the glass plate at a speed of 1 m / min. Move and 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 blown off with compressed air (1 kgf / m ² ). A cellophane tape (manufactured by Sekisui Chemical Co., Ltd., registered trademark) is attached to the surface of the glass plate to remove the residual toner on the glass plate, and the degree of the toner adhered to the cellophane tape is determined. The toner to which no toner adhered (the silicone on the glass plate was completely wiped) was classified into Class 5 and the toner in which a very large amount of toner remained was classified as Class 1, and visually judged in five steps. Further, the state of adhesion of the remaining toner was evaluated based on the presence or absence of vertical streaks.
The presence / absence of this vertical streak coincided with the presence / absence of wiping residue for the purpose of removing the abrasive in the actual hard disk manufacturing process.

(Comparative Example 1) 50 denier, 4
0 filament polyester filament (single yarn fineness: 1.
25d) was woven and processed in the same manner as in Example 1 using a 70-denier, 72-filament polyester fiber yarn (single fiber fineness: 0.97 d) which had been temporarily twisted. The obtained woven fabric has a vertical density of 150 filaments / inch, that is, the number of filaments per inch is 150 ×
40 = 6,000 lines, and the horizontal density was 146 lines / inch, that is, 146 × 72 = 10,512 lines / inch. The ratio of the number of filaments of the warp yarn to the weft yarn was about 1.8.

The weft yarn of the obtained woven fabric has a floating structure due to crimping, but the warp yarn of the woven fabric is visible, the groove formed by the warp yarn is conspicuous, and the wiping property is evaluated to be largely unwiped. 2
Vertical streaks were observed in the class, and sufficient performance was not obtained.
This is probably because the number of filaments in the weft yarn is small.

(Example 2) 75 denier, 3
6 filament polyester filament (single fiber fineness:
2.1d), and a weft yarn, a 245 denier, 40 filament, sea-island type polyester multifilament yarn, processed by a two-stage heater temporary twisting method, a 4 turn / meter, substantially non-torque crimped yarn. Using. This crimped yarn is made of a fiber made of an alkali-soluble polyester made of a copolymer of terephthalic acid and 5-sodium sulfoisophthalic acid as an acid component of a polyester as an island component, and a sea component as a polyester acid component. Yarn fineness: 0.12d). Using these warp yarns and weft yarns, warp density: 130 /
Five satins having an inch and a weft density of 130 pieces / inch were woven into a greige machine. The greige was heat-treated in the presence of alkali to completely remove the sea component and to break down the weft into ultrafine yarn. Further, by performing treatment with hot water at 130 ° C., the densification due to shrinkage of the yarn and washing were simultaneously performed. next,
The woven fabric was subjected to a dry heat treatment at 160 ° C. for 40 seconds and finished.

The obtained fabric had a vertical density of 143 filaments / inch, that is, the number of filaments per inch was 143.
× 36 = 5,148 lines, and the horizontal density: 140 lines / inch, that is, 140 × 40 × 36 = 201,600 lines / inch. The ratio of the number of filaments of the warp yarn to the weft yarn was about 39. The total fineness of the warp yarn is 75 × 1
43 = 10,725D, and the total weft yarn fineness is (245)
× 0.8) × 140 = 27,440 D, and the fineness ratio of the weft yarn to the warp yarn was 2.6. When the surface of the woven fabric was photographed at a magnification of 100 using a SONY video microscope, the thickness of the weft constrained point (16 mm) and the maximum thickness of the non-constrained point (44.8 m) were obtained.
m) The ratio was 2.8 times, and the warp yarn was hardly visible.

Further, the woven fabric was 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: 59 kg / 5 cm, elongation 37%)
Had a sufficient weft thread floating structure. As a result of evaluation of the wiping properties, there was no wiping residue, the wiping properties were grade 5 and there was no vertical streak, and excellent performance was confirmed.

[0074]

According to the present invention, the woven fabric has a floating structure of a multifilament crimped yarn composed of a substantially non-torque ultrafine fiber according to the total fineness ratio and the number ratio of the warp yarn and the weft yarn, Further, by using the excellent wiping property and the long fiber based on the multifilament crimped yarn composed of the ultrafine fiber, a wiping tape with further excellent wiping property in a certain direction can be obtained. In particular, it is possible to obtain a wiping tape that is used in a clean room and has high reliability as a wipe pink material in a manufacturing process of electronic information equipment that is wiped mechanically rather than manually by humans. This effect
The length is increased by using a substantially non-torque ultrafine crimped fiber for the multifilament crimped yarn made of the ultrafine fiber. In particular, by using a substantially non-torque crimped yarn, the surface of the fabric becomes a woven fabric substantially covered with ultrafine fibers, and the ultrafine fibers capture fine particles,
In the wiping operation, a wiping tape having no wiping residue can be obtained. In addition, by using a multifilament yarn made of an antistatic fiber for the other yarn, the generation of static electricity can be suppressed, and the amount of generated dust can be reduced.

Further, the tape has low dustiness due to both edges being heated, and furthermore, by setting the elongation in the tape longitudinal direction to 20 to 50%, a proper elongation at the time of wiping is achieved. It does not cause single yarn breakage in the ultrafine fibers, and does not cause a decrease in cleanliness due to new dust generation,
In addition, since the tape thickness is 0.1-0.7 mm and the tensile strength in the longitudinal direction is 40-70 kg / 5 cm, the single-thread breakage of the ultrafine fibers does not occur and the wiping operation with higher cleanliness is possible. Become.

[Brief description of the drawings]

FIGS. 1A and 1B are perspective views each showing a wiping tape according to an embodiment of the present invention.

FIG. 2 is a perspective view showing another embodiment in which the wiping tape of the present invention is hermetically packed in a resin film bag.

FIG. 3 is a sectional view taken along the line XX of FIG. 2;

FIG. 4 is an explanatory diagram showing a usage example of the wiping tape of the present invention.

FIGS. 5 (A) and 5 (B) show another usage example of the wiping tape of the present invention, wherein (A) is a schematic side view and (B) is a plan view.

FIGS. 6A and 6B are explanatory views showing the operation of the wiping tape of the present invention.

[Explanation of symbols]

 1: Wiping tape 2: Core 3: Resin film bag 10: Winding body (of wiping tape)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G11B 23/50 G11B 23/50 C

Claims (12)

[Claims] 1. A woven fabric comprising a multifilament yarn made of an ultrafine fiber having a single fiber fineness of 1 denier or less for at least one of a warp yarn and a weft yarn, wherein the multifilament yarn made of the ultrafine fiber is substantially A non-torque crimped yarn, wherein the ratio of the total fineness of the warp yarn to the weft yarn is 1.5 to 10 times. 2. The wiping tape according to claim 1, wherein a multifilament yarn containing an antistatic fiber is disposed on at least one of the warp yarn and the weft yarn. 3. The wiping tape according to claim 1, wherein the weft yarn is a substantially non-torque crimped yarn, and the warp yarn is a multifilament yarn including an antistatic fiber. . 4. The wiping tape according to claim 3, wherein the total fineness of the multifilament yarn comprising the ultrafine fibers is larger than the total fineness of the multifilament yarn including the antistatic fiber. 5. The ratio of the minimum diameter of the constrained point of the weft by the warp yarn to the maximum diameter of the non-constrained point in the weave structure of the woven fabric is 1.1 to 5 times, and the weave structure is substantially formed. The wiping tape according to any one of claims 1 to 4, wherein the wiping tape has a floating structure of a non-torque crimped yarn. 6. The wiping tape according to claim 1, wherein a ratio of the number of the warp yarns to the number of the weft yarns per unit area is 1:10 or more. 7. The wiping tape according to claim 1, wherein the number of the weft yarns is larger than the number of the warp yarns. 8. The warp yarn having a single fiber fineness of 0.5 to 5.0.
The wiping tape according to any one of claims 1 to 7, wherein the denier raw silk is made of synthetic fibers having a shrinkage factor of 10% or less in hot water at 100 ° C. 9. The wiping tape has a thickness of 0.1 to 0.1.
It is formed by heat-cutting both edges into a tape having a width of 0.7 mm and a width of 3 to 1,800 mm, and has a tensile strength in the longitudinal direction of the wiping tape of 40 to 70 kg / 5.
The wiping tape according to any one of claims 1 to 8, wherein the wiping tape has a cm and an elongation of 20 to 50%. 10. JIS B9923 6.2 (1.
10. The wiping tape according to any one of claims 1 to 9, wherein the amount of particles generated by the wiping tape according to 1) is 5 μm or more and 20 particles / ft ³ · 100 cm ² or less, and the wiping tape is hermetically packed in a resin film bag. The wiping tape according to 1. 11. The wiping tape according to claim 1, wherein the wiping tape is wound up in a roll shape around a core. 12. The method according to claim 1, wherein the rotary drive roller system is used for wiping stains of electronic device parts while being pulled and moved.
12. The wiping tape according to any one of items 11 to 11.