JP3511814B2 - Wiping tape - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiping tape, and more particularly to a wiping tape used for wiping dirt off the surface of electronic equipment parts such as hard disks (magnetic disks) and magnetic tapes.

[0002]

2. Description of the Related Art As for electronic equipment parts such as hard disks (magnetic disks) and magnetic tapes, the presence or absence of dirt such as oil film and dust has a serious influence on the performance. A removing step is provided to clean the product. Conventionally, as a wiping means for such a wiping process, for example, an actual flat plate 1-1
A wiping tape in which a cloth made of ultrafine fibers is slit, as proposed in Japanese Patent No. 60959, is often used. Since the wiping tape made of the cloth using the ultrafine fibers does not leave unwiping on the surface to be treated, unlike the wiping tape made of fibers having fineness, it is possible to exhibit higher wiping performance.

However, recent electronic equipment parts such as hard disks are required to have a higher degree of cleanliness after being wiped in order to further improve the performance. For this reason, it has become difficult for conventional wiping tapes to sufficiently meet the recent demands, even for fabrics using ultrafine fibers.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a wiping tape capable of further improving cleanliness after wiping.

[0005]

The wiping tape of the present invention comprises a woven or knitted fabric of ultra-fine multifilament yarns having a single yarn fineness of 1 denier or less and a thickness of 0.1 to 0.7 mm and a width of 3 to.
Both edges are heat-cut on a 1800 mm tape, and the tensile strength in the longitudinal direction of the tape is 40 to 70 kg.
/ 5 cm, and the elongation is 65 to 85%.

A woven or knitted wiping tape composed of ultrafine multifilament yarns having a single yarn fineness of 1 denier or less has a function of absorbing dirt such as an oil film on the surface into numerous voids inside the multifilament yarn by a capillary phenomenon. Since it has, it can be wiped off without leaving stains on the surface to be treated, and it can be prevented from leaving stains on the tape surface side.

The tape with both edges cut is
Although there is a problem that the fiber cutting end is likely to generate dust from the edge part, the fiber cutting ends are fused to each other by the edge being heat cut as described above, and it is possible to suppress dust generation. it can. Furthermore, since the ultrafine fiber multifilament yarn is a long fiber without fluffing, the multifilament yarn itself does not generate dust, and a wiping tape having excellent dust-free property can be obtained.

The wiping tape of the present invention has the above basic performance and further has an elongation of 65 in the longitudinal direction of the tape.
When it is up to 85%, a moderate amount of elongation is generated at the time of wiping so that the frictional force is released, so single filament breakage of the ultrafine fibers does not occur and it does not cause new dust generation. The cleanliness can be further improved. Moreover, the tape thickness is 0.1 to 0.7 mm, and the tensile strength in the longitudinal direction is 4
Since it is 0 to 70 kg / 5 cm, single yarn breakage of the ultrafine fibers due to the elongation does not occur, and wiping with excellent cleanliness is possible.

[0009]

1A and 1B show a wiping tape according to an embodiment of the present invention. FIG. 1 (A) shows a wiping tape 1 in which a woven or knitted product of ultrafine multifilament yarns having a single yarn fineness of 1 denier or less is slit by a narrow hit cut.
In addition, it is wound around the winding core 2 as a roll-shaped winding body 10. Moreover, what is shown in FIG. 1 (B) is a wiping tape 1 in which the same woven or knitted material is slit widely by heat cutting, and is wound around a winding core 2 as a roll-shaped winding body 10.

These wiping tapes 1 do not necessarily have to be wound up in a roll as shown in the drawing, but when wound up in a roll, even a long tape of, for example, 40 to 50 m can be stored extremely compactly. . Further, if it is wound up in a roll shape, the operation of wiping the surface of the resin film such as a magnetic tape can be facilitated when used in the 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 is wound is set on the rewinding machine 6, and the resin film 5 is removed from the winding body 30.
While continuously winding up on the winder 7 while pulling out,
The winding body 10 of the wiping tape 1 is set on the rewinding machine 8 above it, and the wiping tape 1 is pulled out from the winding body 10 and wound up by the winding machine 9. The wiping tape 1 and the resin film 5 are running in mutually opposite directions, and when the pressing roll 4 is pushed down from the upper surface of the wiping tape 1 and pressure-bonded to the resin film 5, the wiping tape 1 is predetermined on the surface of the resin film 5. The wiping action is performed while moving relatively by the frictional force.

Further, FIGS. 5A and 5B show a case where a wiping tape wound in a roll is used for wiping the surface of a hard disk. 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 cut across the radial upper surface of the hard disk 15 from the winding body 10. It is wound up on the winder 9 so that it can be moved. Then, the pressing roll 14 is pushed down from the upper surface of the wiping tape 1 to remove the hard disk 1.
Wiping tape 1 when pressed against the upper surface in the radial direction of 5
Is adapted to perform a wiping action while moving relative to the surface of the hard disk 15 with a predetermined frictional force.

The wiping tape 1 of the present invention has a single yarn fineness of 1 denier or less, preferably 0.2 denier or less,
A woven or knitted fabric woven from a superfine multifilament yarn of 0.00001 denier or more is slit and formed by heat cutting. As described above, since the fiber ends on both edges are fused to each other by the heat cutting, self-dusting does not occur from the fiber ends.
Further, since it is made of fluff-free long fibers, dust is not self-generated from this point as well.

Further, the wiping tape 1 has a wiping performance based on the principle as shown in FIGS. 6A and 6B due to the function of the multifilament yarn in which a large number of ultrafine fibers are bundled. This wiping performance cannot be sufficiently obtained when a fiber having a single yarn fineness larger than 1 denier is used. As shown in FIG. 6A, the multifilament yarn F in which a large number of ultrafine fibers f are bundled has an infinite number of gaps G formed therein. When the surface to be treated is wiped with the wiping tape 1 formed from the woven or knitted fabric of the multifilament yarn F, the wiped oil film and the dirt D move to the gap G inside the multifilament yarn F due to the capillary phenomenon. It will be trapped. Therefore, the surface to be treated can be wiped off without leaving any dirt, and since no oil film or dirt D is left on the surface of the wiping tape 1, it can be repeatedly wiped off.

Furthermore, since the ultrafine fiber multifilament yarn is a long fiber without fluff, the wiping tape 1 has substantially dust-free characteristics because it does not generate dust. The wiping tape 1 of the present invention has a thickness of 0.
A woven or knitted material having a width of 1 to 0.7 mm, preferably 0.2 to 0.5 mm is slit into a tape shape with a width of 3 to 1800 mm, and the physical properties of the tape include a tensile strength of 40 to 40 in the longitudinal direction of the tape. 70kg / 5cm, elongation 65-85%
It is as follows.

Thus, 65 to 85% in the longitudinal direction of the tape
Since it has the elongation (breaking elongation) of the microfibers, it does not cause breakage of the ultrafine fiber single yarns due to the elongation caused by the frictional force during wiping, which may cause new dust generation. Absent. If the elongation in the longitudinal direction of the tape is less than 65%, the ultrafine fibers are likely to break into single yarns, and if it exceeds 85%, the elongation becomes too large, and therefore good wiping can be performed. become unable. In the present invention, the tape thickness is 0.1 to 0.7 m.
The reason why the tensile strength in m and the longitudinal direction is 40 to 70 kg / 5 cm is to prevent single yarn breakage from occurring in the ultrafine fibers against the above frictional force.

Therefore, the wiping tape of the present invention, by having the above-mentioned tape characteristics, enables a wiping operation with a higher degree of cleanliness.
Of the above wiping tapes, particularly those used in the wiping process in the hard disk manufacturing process which is produced in a so-called clean room, as shown in FIGS. 2 and 3, after being treated in a substantially dust-free state, the resin film bag 3 It is good to pack it in a sealed box.

Here, the wiping tape being in a substantially dust-free state means that there are 3 particles / ft ³ having a dust generation amount of 5 μm or more measured in accordance with JIS B99236.2 (1.1).・ 100 cm ² or less, more preferably 1 piece /
ft ³ · 100 cm ² or less. The wiping tape 1 thus made substantially dust-free is hermetically packed in a resin film bag 3 as shown in FIGS. 2 and 3, and is opened and wiped with a clean ream in which a hard disk manufacturing process is placed. If it is used in a process, it can be easily applied to a hard disk manufacturing process or the like in which an ultra-dust-free state is achieved.

The method for making the wiping tape in a substantially dust-free state as described above is not particularly limited, but it is preferable to completely wash the wiping tape with pure water in a washing machine, and after the washing, in a clean room. It is advisable to store and seal the wiping tape in a resin film bag. In the present invention, the polymer used for the ultrafine fiber multifilament yarn is not particularly limited, and any polymer can be applied as long as it can be spun by a normal spinning method. For example,
Examples thereof include polyester, polyamide, polyvinyl alcohol, and polyolefin. Among them, polyester is a particularly preferable material.

In the wiping tape of the present invention, conductive fibers may be mixed in the woven or knitted material, and the mixing of the conductive fibers can impart antistatic property to the wiping tape.

[0021]

As described above, since the wiping tape of the present invention is formed by heat cutting both edges of a woven or knitted fabric of ultrafine fibers multifilament yarn having a single yarn fineness of 1 denier or less, the ultrafine fibers are It has excellent wiping properties based on fiber multifilament yarn and low dust properties due to being heated at both edges, in addition to being long fibers, and further has elongation in the tape longitudinal direction of 65 to 8
Since it is set to 5%, moderate elongation is not generated during wiping, single filament breakage does not occur in the ultrafine fibers, new cleanliness does not reduce the cleanliness, and the tape thickness is 0. ．
1 to 0.7 mm, longitudinal tensile strength 40 to 70 kg /
Since the length is set to 5 cm, no single yarn breakage of ultra-fine fibers occurs and the cleaning operation with higher cleanliness becomes possible.

[Brief description of drawings]

1A and 1B are perspective views 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.

3 is a cross-sectional view taken along the line XX of FIG.

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

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

6 (A) and 6 (B) are explanatory views showing the action of the wiping tape of the present invention.

[Explanation of symbols]

1 Wiping tape 2 winding core 3 resin film bag 10 (wiping tape) winding body

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 23/50 D03D 15/00 G11B 5/84 A47L 13/16

Claims (4)

(57) [Claims] 1. A woven or knitted fabric of ultrafine multifilament yarns having a single yarn fineness of 1 denier or less and a thickness of 0.1 to 0.7 m.
It is formed by heat-cutting both edges on a tape having a width of 3 to 1800 mm and a tensile strength of 4
Wiping tape with 0-70kg / 5cm and elongation of 65-85%. 2. JIS B9923 6.2 (1.1)
The wiping tape according to claim 1, wherein the amount of dust generated by the tape is 3 particles / ft ³ · 100 cm ² or less according to the regulation, and the tape is hermetically packed in a resin film bag. 3. The wiping tape according to claim 1, wherein the tape is wound around a winding core in a roll shape. 4. The method of claim 1, wherein the rotary drive roller system is used for wiping dirt of electronic device parts while pulling and moving.
The wiping tape according to 2 or 3.