JPH01280042A - Antistatic wiping raw material - Google Patents

Abstract

PURPOSE:To obtain the subject raw material having excellent wiping power keeping in low level triboelectric voltage in the woven and knit fabric with slight fray or collapsing of stitch, containing electron conducting fine particle of antistatic component in core part of ultrathin fiber with core-sheath type structure. CONSTITUTION:At least a half face of woven and knit fabric is constructed with mainly 0.5-0.005 denier ultrathin fiber yarn of core-sheath type. Block polyether amide (composition) is contained in core part of the ultrathin fiber so that polyalkylene ether component is 0.05-5wt.% in the ultrathin fiber. Triboelectric voltage of woven and knit fabric mainly made of the ultrathin fiber is kept <=3,000V, preferably <=1,000V.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to antistatic wiping materials.

More specifically, when used as a wiping material,
The present invention relates to an antistatic wiping material that is less likely to be electrostatically charged due to friction, has good wiping properties, and is less prone to fraying or texture.

[Conventional technology]

Naturally derived fibers (
For example, many of them are made of cellulose fibers, etc., but these are inferior in strength and durability. In order to improve such strength and durability and further increase cleaning power, materials using ultra-fine fibers, such as Kosho 59-30419■
Japanese Unexamined Patent Application Publication No. 61-103428 and Japanese Patent Publication No. 61-58573 are disclosed.

The above-mentioned Publication (2) particularly states that by using flat cross-section fibers, a larger surface area can be obtained and less decrease in fiber strength can be achieved when comparing the same fineness, and that by using a combination of hydrophilic polymer and lipophilic polymer, , it is described that it is effective in removing both hydrophilic stains and lipophilic stains.

However, combinations of such polymers generally have poor compatibility, and when such polymers are composite-spun to form woven or knitted fabrics, fibrillation tends to occur in each process from spinning and drawing to weaving, making stable processing difficult. Ta. In addition, until now, the only way to increase the density of woven or knitted materials was to make the machine finer or apply tension, just like knitting or weaving itself.
Benzyl alcohol has been used to cause fibrillation and shrinkage at the same time. In this case, the material had to be a mixture of nylon, which has low strength.

In addition, the above-mentioned Publication (2) describes that composite fibers made of polyester and polyamide similar to those described above are preferably used, and that the structure is such that a large number of ultrafine fibers are arranged on the surface. In this case as well, in addition to having the same drawbacks as above, since the structure has a large number of floats, it is unavoidable that fraying and meshing are likely to occur.

On the other hand, in the above-mentioned Publication (2), as a method for obtaining a high-density m-knitted fabric with less selvage and irregularities, a high-pressure water stream is injected onto a woven or knitted fabric made of ultra-fine fibers, and It is stated that if ultra-fine fibers are interlaced in both yarns, a woven or knitted fabric with less selvage and stitch misalignment can be obtained.

However, since all of these use ultrafine synthetic fibers, they have the drawback of high electrostatic charge due to friction between them and the object to be cleaned.

-a) It is well known that synthetic fibers are more susceptible to static electricity than natural fibers, but this tendency is more pronounced as the finer the fibers are used, i.e., the finer the ultra-fine fibers are used, the more the objects to be cleaned are cleaned. Since the contact area between
There was a problem that became more obvious. In recent years, when used in fields such as the pharmaceutical industry and electronic precision industry, which are particularly sensitive to dust generation and electrostatic charging, such conventional wiping materials have caused problems such as dust adhesion due to static electricity charging and element destruction due to discharge. This often caused inconvenience.

On the other hand, synthetic fibers tend to generate static electricity; for example, when used as clothing, the clothes cling to the body, generate unpleasant crackling noises, tend to attract dust, and are susceptible to static electricity when walking on carpets. Since it is easy to cause problems such as shock, research has been progressing to prevent this static electricity and make it antistatic or conductive, and many methods have been proposed. For example, ■ A method of applying an antistatic agent through post-treatment, ■ A method of coating the fiber surface with an antistatic resin, ■ A method of kneading an antistatic agent and dispersing it in streaks, ■ As a core-sheath composite fiber. A method has been proposed in which the core contains an antistatic or conductive substance.

When trying to apply this method to a fabric mainly composed of ultrafine fibers that can provide excellent cleaning power, the methods of ■ to ■
Durable antistatic effects could not be expected because they tend to fall off or form fibrils due to friction or washing. In addition, although the method (2) has excellent durability, the fiber diameter of the conventional core #a composite fiber is too large and sufficient cleaning power cannot be obtained, making it inconvenient as a wiping material.

In addition, these antistatic and conductive fibers have dustproof properties that keep dust and dirt away; conversely, since dust adsorption is thought to be mainly due to static electricity adsorption to the fiber surface, these antistatic and conductive fibers There have been few proposals for using conductive fibers as wiping materials.

[Problem to be solved by the invention]

The purpose of the present invention is to provide an antistatic wiping material that has excellent cleaning power despite low frictional electrification, is less prone to peeling or clutter, and is less likely to generate dust. It's about doing.

[Means to solve the problem]

In order to achieve the object of the present invention, the present inventors have conducted intensive studies on imparting antistatic properties, and as a result, the inventors have developed an ultra-fine fiber with a core-sheath type structure, and the core contains conductive fine particles or an antistatic component. and by suppressing the frictional charging voltage of the woven or knitted fabric made mainly of the ultrafine fibers to 3000V or less,
The inventors have discovered that it is possible to obtain a wiping material that is less likely to be triboelectrically charged during cleaning even when the object to be cleaned is rubbed, and has excellent wiping properties, leading to the present invention.

Furthermore, it is preferable that the yarns of such a woven or knitted fabric be intertwined (
By using a woven U-woven structure in which a tangle is formed, or an im-woven structure of either double denim or half tricot, it is possible to further reduce fraying and disordered mesh, and more preferably, such a woven or knitted fabric. The present invention has been achieved by discovering that if the ultra-fine fibers are intertwined both between the yarns and within the yarns, there will be less unraveling and disordered mesh. has.

+1) At least one fabric surface is mainly 0.5~
A 48m product mainly composed of threads made of core-sheath type ultrafine fibers of 0.005 denier, and the ultrafine fibers have block polyether amide or block polyether amide composition in the core. , a core-sheath type composite ultrafine fiber containing a polyalkylene ether component as a constituent component in an amount of 005 to 5% by weight based on the entire ultrafine fiber, and JIS-L-1094-
An antistatic wiping material characterized in that the woven or knitted fabric has a frictional charging voltage of 3000 V or less as measured based on the 1980B method.

(2) At least one fabric surface is mainly 0.5~
A VA knitted fabric mainly composed of yarns made of ultrafine fibers of 0.005 denier, and the ultrafine fibers have conductive particles in the core at a ratio of 0.5 to the entire ultrafine fibers. 1% or more by weight of core-sheath type composite ultrafine fiber containing ~40M amount %, and J
An antistatic wiping material characterized in that the woven or knitted fabric has a frictional charging voltage of 3000 V or less as measured based on the IS-L-1094-1980B method.

(3) The ultra-fine fiber contains block polyether amide or the block polyether amide composition in the core, and the polyalkylene ether component as a constituent component thereof accounts for 0.05 to 5% by weight in the entire core ultra-fine fiber. A claim consisting mainly of a core-sheath type composite ultrafine fiber containing
The antistatic wiping material described in 2).

(4) The texture of the woven or knitted fabric has two or more warp yarns in pairs,
The antistatic wiping material according to claims (1) to (3), which is a twisted fabric in which one and/or a plurality of weft threads intersect to form a twisted structure (tangle structure).

(5) Claims (1)-(
The antistatic wiping material described in 3).

(6) Claims (1) to (5) wherein at least ultrafine fibers are entangled both between and within the yarns of the woven or knitted material.
) anti-static wiping material.

The ultra-fine fibers that are the constituent elements of the antistatic wiping material of the present invention are ultra-fine fibers of 0.5 to 0.005 deniers, and the ultra-fine fibers have a core-sheath type structure. , and is an ultrafine fiber having conductive fine particles or an antistatic component in the core. Ultrafine fibers having a core-sheath type structure may be produced by stricter spinning conditions for conventional core-sheath type composite fibers, but in such a direct spinning method,
When the fibers become thinner than the denier, especially less than O.1 denier, thread breakage and dripping occur, making it difficult to produce stably on an industrial scale, so it is preferable to use the method described below.

Generally 0.5-0. OO5 denier ultrafine fibers can be obtained by several methods described in Kagaku to Kogyo, Vol. 36, pages 521-523, but the core-sheath type antistatic ultrafine fiber of the present invention The ultrafine fiber is, for example, as described in JP-A-54-116417 (
Fig. 1 shows a case in which the island component constitutes a core-sheath type fiber of 0.5 to 0.005 denier, and the sea component surrounds the plurality of core-sheath type island components using a die of . Sea/island (sheath/core) type as shown in (a) or multiple 0.5
Spinning is a method of forming 3-component composite fibers, such as the 3-component (intervening component type) fiber shown in Figure 1 (bl), which has a structure in which core-sheath type units of ~0°005 denier are bound by intervening components. This is preferred because of ease of processing and ease of post-processing.

The fineness of the ultra-fine fibers may be within the above range, but may be between 0 and 1.
The range of denier to O,OO5 is more preferable, especially 0.
Particularly preferred is a denier of 0.07 to 0.005.

If you use a conventional antistatic yarn with a normal denier that is outside this range, for example, the fiber is thicker than 0.5 denier, sufficient cleaning power will not be obtained, and conversely, if the fiber is thinner than 0.005 denier, the fiber This is not preferable because the strength becomes too weak and the fibers are likely to be cut during cleaning, causing dust generation.

Further, the term yarn used in the present invention includes both multifilament and spun yarn, but multifilament is preferable since it generates the least amount of dust.

Now, the block polyether amide used in the core of the core-sheath type ultrafine fiber of the present invention is a block copolymer of polyether and polyamide. The polyether constituting the block polyether amide means a polyalkylene ether, for example, a polymerization product of ethylene oxide and/or propylene oxide such as polyethylene ether, polypropylene ether 1, and polyethylene propylene ether.

The molecular weight of these polyethers is preferably 1,000 or more, preferably 3,000 to 8,000, and polyethylene glycol is particularly preferred.

On the other hand, the polyamide constituting the block polyetheramide is a homopolyamide such as nylon-6, nylon-8, nylon-12, nylon-66, or nylon-610, or a copolymer containing these or other copolymer components. , homo- or p-polyamide produced by polycondensation reaction of polyamide-forming components.

Such block polyetheramides may be used alone or as a mixture with polyamides, but preferably,
It is desirable to use it as a block polyether amide composition described below.

Such a block polyether amide composition is a block polyether amide containing a predetermined amount of an organic electrolyte and a phenolic antioxidant.

The organic electrolyte here is formed from sulfonic acids such as dodecylbenzenesulfonic acid, tridodecylbenzenesulfonic acid, nonylbenzenesulfonic acid, hexadecylsulfonic acid, and dodecylsulfonic acid, and alkali metals such as sodium, calcium, and lithium. Examples include alkali metal salts of sulfonic acid, alkali metal salts of phosphoric acid such as sodium distearyl phosphate, and alkali metal salts of other organic carboxylic acids. Among them, metal salts of sulfonic acid such as sodium dodecylbenzenesulfonate are preferred.

Examples of phenolic antioxidants include l.

3.5-trimethyl-2,4,6-)-(3,5-di-tert-phthyl-4-hydroxybenzyl)benzene, 2,2-methylenebis(4-methyl-6-tert-
butylphenol), 2,6-di-tert-butyl-P-cresol, and 2,2-methylenebis(4-ethyl-6-tart-butylphenol), etc. It is a phenolic derivative.

The proportion of the organometallic salt in such a block polyether amide composition is preferably 1-10% by weight, and the proportion of the phenolic antioxidant is preferably 1-10% by weight.

The content of the block polyether amide or its composition is preferably such that the proportion of the polyalkylene ether component to the entire ultrafine fiber is 0.05 to 5% by weight.

By doing so, excellent durability and good antistatic properties can be obtained for the first time.

On the other hand, examples of the conductive antistatic fine particles used in the conductive ultrafine fibers include conductive carbon, metal fine particles, conductive metal oxide fine particles, and conductive metal compound fine particles.

Examples of conductive carbon include channel blank, furnace black, acetylene black, and thermal black. Furthermore, examples of metal fine particles include fine particles of gold, platinum, silver, aluminum, copper, iron, zinc, nickel, chromium, and alloys thereof. Examples of metal oxide fine particles include fine particles of zinc oxide, tin oxide, copper oxide, cuprous oxide, indium oxide, tungsten oxide, zirconium oxide, and the like. Further, as the conductive metal compound fine particles, fine particles of 1214 iodide, zinc iodide, copper sulfate, cadmium sulfide, etc. are used.

Regarding the content of such conductive fine particles, in the case of a normal denier core-sheath type composite fiber, the thickness of the skin corresponding to the sheath is about 1 liter.
Even if electricity flows in the direction of the fiber axis,
Since it is difficult to flow in the direction perpendicular to the fiber axis, it is necessary to take measures such as exposing components containing the conductive fine particles on some fiber surfaces, and to use a considerable amount of needles containing the conductive fine particles. However, in the ultra-fine fiber of the present invention, since the thickness of the sheath portion is 1.5 microns or less, electricity leaks slowly even in the direction perpendicular to the fiber axis. In addition, since it has ultra-fine fiber ends, it is easy to cause point discharge, and when used as a wiping material, the amount of fine particles contained in the core may be smaller than that of ordinary denier composite fibers. In the case of conductive carbon, it is preferably in the range of 0.5 to 20% as a proportion of the total ultrafine fibers, although it cannot be absolutely limited depending on the type. Further, when using tin oxide, the content is preferably 1 to 40% by weight.

The core component and sheath component of such ultrafine fibers may be any known spinnable polymer, but polyester, polyamide, polypropylene, polyacrylonitrile, copolymer modified products thereof, and mixtures of other components are preferred.

The composite ratio of the core and sheath can be arbitrarily selected, but in order to suppress quality deterioration due to fibrillation, the ratio of the core is preferably 5 to 50% by weight, and 10 to 3% by weight.
0% is more preferable. Further, the composite shape may be of any shape, such as concentric, eccentric, or a shape in which the core portion is partially exposed on the fiber surface.
Since the core is completely and uniformly covered by the sheath, there is little chance of the core falling off due to friction, which is more preferable.

Using such a core-sheath type antistatic ultrafine fiber as a main body,
A woven or knitted fabric is created in which at least one surface of the fabric is mainly formed from the ultrafine fibers, or a woven or knitted fabric is created by mixing core-sheath type conductive ultrafine fibers with the ultrafine fibers in an amount of 1% or more by weight. , and JIS-L-1094-1980
The frictional charging voltage measured based on method B is 3000V or less,
Preferably 2000V or less, more preferably 100OV
By doing the following, a wiping fabric with excellent antistatic properties and excellent cleaning power can be obtained. In this case, it is particularly preferable to mix conductive ultrafine fibers with antistatic ultrafine fibers, since this provides the highest antistatic properties.

Such fabric structures include horizontal knitting, vertical knitting, and all [
Even if it is an Il weave, in the case of woven fabrics, flat,
Although it may be a diagonal weave, a satin weave, or any m-weave that has changed from these weaves, weaving or knitting structures described below are particularly preferable because they are less prone to fraying and irregularities.

Now, as for the preferable structure of a woven or knitted fabric, as shown in FIG. 5, in a normal woven fabric, the warp threads are always parallel to each other
The weft threads have a weft structure that intersects them at right angles, while the warp threads are intertwined with at least one of the warp threads and ground warp threads.
As shown in Fig. 2, the leash warp and ground warp are arranged in pairs, and the positions of the weft and/or multiple weft threads are reversed and intersected (twisted) to create a leash structure. It is preferable to form. In this leno weave, for example, in addition to passing the ground warp threads through a ground belt and opening them at the top and bottom as in normal textiles, the leno warp threads are passed through the ground belt, and then the ground warp threads pass above or below the ground warp. It can be obtained by turning the yarn to the opposite side, passing it through a tangling belt, and weaving by changing the position of the ground warp yarns to the left and right.

The density of such entanglement (entanglement) is preferably 200 cells/cd or more, more preferably 300 cells/cd or more,
Furthermore, it is particularly preferable if it is 500 pieces/cj or more. In addition, the weaving density varies depending on the total fineness of the yarn used, and cannot be specifically limited, but if it is in the range of 50 to 100 denier, the warp is 100 yarns/inch or more (counting the ground warp and leno warp separately) , preferably 120 lines/inch. The weft density is preferably 50 threads/inch or more, more preferably 70 threads/inch or more.

The fabric woven with such a leash structure can be used as it is.
Although there is little fraying or irregular stitches, a high-pressure water stream is further injected onto the fabric using a water punch described later, and at the same time as the fabric shrinks, as shown in Figure 4, the thread-to-yarn space in 1 and the thread in 2 are It is more preferable to intertwine the ultra-fine fibers in both parts of the yarn, since there is no see-through, and the fraying and irregularities of the weave are reduced.

In this case, it is also a more preferable effect of the present invention that the same or higher fraying resistance and irregularity resistance can be obtained at a treatment pressure that is several steps lower than when treating general Va knitted fabrics.

On the other hand, a preferred knitting structure has a warp knitting structure consisting of a base weave and a surface weave, as shown in Figure 3, and the base weave is composed of one warp (as shown in Figure 3) that constitutes the base weave. 1 is,
After forming a loop in the first course, in the second course it is hung on an adjacent wale to form a loop, and in the third course, the 1×L closed tricot is silk-wrapped again in the same wale as in the first course. The warp yarns (2 in the diagram) that form the texture and the surface texture are the lxl cord or 1x wrapped in the opposite direction.
It is preferable to have a structure in which two cords are superimposed on a darning ground structure, that is, a so-called double denbi or half tricot structure. Such a knitting structure, for example, uses at least two reeds for the double denbi structure, and for the back reed,
After the rear warp yarns form a loop in the first course, they are hung over the adjacent wale in the second course to form a loop, and in the third course they return to the same wale as in the first course. It can be formed by feeding the yarn in the front direction, and in the front stream, rough pinning a similar course in the opposite direction to the rear reed, and then knitting and organizing it.

In general, knitting textures are classified into two major textures: weft knitting and warp knitting, but among warp knitting, double den, which has a structure with the least floating number, is more preferable.

Of course, a high-pressure water stream is sprayed on this im-woven material, and the yarn-
It is more preferable to intertwine the ultrafine fibers both between the yarns and within the yarns, as this will further reduce tangles and clutter. Furthermore, even when treated at low pressure, excellent effects can be obtained, as in the case of the textile structure described above.

Now, regarding the water jet punching treatment, which is a preferable requirement, a high-pressure fluid, preferably a water stream, is injected from small holes onto one or both sides of the woven or knitted fabric, thereby shrinking the fabric and causing entanglement of the ultrafine fibers. If the injection pressure is too low, the ultra-fine fibers will not get entangled, but if it is too high, the ultra-fine fibers will be cut and dust will be generated.
A range of kg/j is preferred. It is determined as appropriate within this range depending on the strength of the fibers, the thickness of the fiber bundle, etc.

When a sea component is present, it is often the case that some of the sea component is removed by the water jet punch, but this is desirable and not a disadvantage; it does not impede the effectiveness of the present invention. On the contrary, by using a sea component that is easy to be removed by accumulation, a sea component that is easy to turn into ultra-fine fibers by peeling, and a three-component split fiber that can be turned into ultra-fine fibers by peeling, we can create ultra-fine fibers. This is preferable because it can simultaneously generate the ultrafine fibers that make up the woven or knitted fabric.

The form of water jet punching is well known, without the need to list any known examples here. Can be applied with or without a pattern.

Examples are shown next, but the validity and scope of rights of the present invention are not limited or restricted thereby. Rather, it brings about the next application and development.

〔Example〕

Example 1 Spinning and trial weaving were carried out under the conditions shown below using a three-component die as shown in JP-A-54-116417.

The block polyether amide composition was prepared by using an aqueous solution of polyethylene glycol diammonium adipate obtained by reacting polyethylene glycol diamine with an average molecular weight of 4000 with adipic acid, an aqueous solution of caprolactam, and an aqueous solution of hexamethylene diammonium isophthalate, and , sodium dodecylbenzenesulfonate and 1.3.51-samethyl-2,4,6-tri(
3,5-tert-butyl 4-hydroxybenzyl)
Obtained by adding benzene and polymerizing.

(1) Cap: Sea-island type cap, contemplative sheath type (complex concentric circles)
Number of islands: 38, number of discharge holes: 18 (2) Spinning machine: 3-component spinning machine (3) Spinning temperature: 285°C (4) Core component: 9 parts of polyethylene terephthalate mixed with 10% of a niblock polyetheramide composition ( The content ratio of polyalkylene ether in the whole fiber is 0.9% by weight) (5) Sheath component: 81 parts of polyethylene terephthalate (
Intrinsic viscosity TV=0.72) (6) Sea component: Polyethylene terephthalate containing 5.5% mol of 5-sodium sulfonate as an acid component (7) Take-up speed: 1000 m/min (8) Stretching ratio: 3.4 Double (9) Fiber: 50D-18f (contemplative sheath type) Island/
Sea ratio - 90/10 Island fineness - 0.07d Core/nitrification = 90/10 After removing the sea component of the obtained drawn yarn, the electrical resistivity was measured and found to be 40XlO''Ω·cm.

01 knitting machine Nitori Kotsu knitting machine gauge used 32G aO woven Mim: Double denim knitting thickness = 0.41mm Weight - 125g/rrf Thickness after drying = 0.37mm Weight = 140g/lrf After dyeing, the resulting fabric When the frictional charging voltage was measured,
It showed good antistatic properties of 850■. In addition, there was almost no chance of blurring or disturbing the eyes, and when I wiped my glasses soiled with hand oil, fingerprints, etc., I was able to wipe them clean with just a few gentle rubs.

Comparative Example 1 The core component was polyethylene terephthalate mixed with 10% by weight of pellets made of the block polyether amide composition used in Example 1, and the sheath component was polyethylene terephthalate with an intrinsic viscosity of 0.63, and the composite ratio of sheath to core was A concentric composite yarn having a weight ratio of 80:20 was spun at a spinning speed of 1350 m/min. The obtained undrawn yarn was
The yarn was drawn 3.0 times at ℃ to obtain a drawn yarn of 75 denier 72 filaments.

Next, the frictional charging voltage of the fabric made by trial weaving and dyeing this yarn was 7.
00v, showing good antistatic properties.

However, when I used such a fabric to wipe glasses that were soiled with hand oil, fingerprints, etc., I could not wipe them clean after 2 to 3 times, and I was able to wipe them off after rubbing 2 to 30 times. could not be completely removed. In addition, since it was not possible to wipe it clean with just light rubbing, some of the fibers became fibrillated because I rubbed with my fingertips with a lot of force.

Example 2 Using the fibers obtained in Example 1, the following fabric was created.

(1) Loom: Freishattle loom (2) Ori Mi￥
@ : Plain weave (3) Weave density Warp density 140/inch Weft density 1
10 pieces/inch (4) Thickness after weaving = 0.14 mm 94 dimensions = 80 g/rrl (5) Thickness after sea removal = 0.11 mm 94 dimensions = 90 g/rd (6) Water jet punch condition processing pressure = 100kg/cm” Speed = 50cm/min (7) Thickness after water jet punching = 0.23
mm 94 dimensions = 105 g/nf Thereafter, the fabric was washed with pure water and finished.

The resulting fabric had a dense and thick feel, did not fray easily, and had a low frictional voltage of 900V, so when an IC chip was rubbed on it, it could be wiped cleanly without damaging the device.

Example 3 As for the warp yarn, as in Example 1, JP-A-54-1 was used.
Using a three-component die as shown in No. 16417 and a two-component sea-island composite die for the weft yarn, spinning and trial weaving were performed under the conditions shown below.

[For warp]

(110-karat gold: Seabird-shaped three-component clasp, number of contemplative sheath-shaped pieces: 38
Island, number of discharge holes: 18 (2) Spinning machine: 3-component spinning machine (3) Spinning temperature: 285℃ (4) Core component: Nylon-6 with 35% conductive carbon
16 parts by weight (5) Sheath component: 663 parts of nylon (6) Sea component: 20 parts of polyethylene terephthalate containing 5.5% mol of 5-sodium sulfonate as an acid component (7) Take-up speed: 1000 m /min (8) Stretching ratio: 3.0 times (9) Fiber: 50D-18f (contemplative sheath type) Island/
Sea ratio = 80/20 Island fineness = 0.06d Core/rust prevention = 80/20 [For weft] (1) Spinneret: Sea-island type two-component spinneret, number of items: 38 islands, number of discharge holes: 18 (2) Spinning machine: 2 Component spinning machine (3) Spinning temperature: 285°C (4) Island component: Nylon - 680 parts (5) Sea component: 20 parts of polyethylene terephthalate containing 5.5% mole of 5-sodium sulfonate as an acid component (6) Take-up speed: 1000 m/min (7) Stretching ratio: 3.0 times (8) Fiber: 50D-18f (contemplative sheath type) Island/sea ratio = 80/20 Island fineness = 0.06 d [Fabric creation] OD weave Set v6: Flat (leaf weave) Ground warp 65/inch Twin warp 65/inch Weft 90/inch Q31 Thickness after weaving = 0.15 mm 14 sun = 85 g/rrf 03 Thickness after sea removal = 0.12 mm 14 Size = 95g/n (The frictional charging voltage of the obtained fabric was 500V, which showed good antistatic properties, and compared to the case of general mhM fabrics, there was no fraying,
It was difficult to cause clutter and had excellent wiping properties.

Comparative Example 2 Using the same polymers as those used for the core component and sheath component in Example 3, a 50-denier, 6-filament core-sheath type composite fiber was obtained.

When such yarn was used for the warp and the same ultrafine fiber as in Example 3 was used for the weft, the frictional charging voltage was 400V.
Met. However, in terms of wiping performance, despite the use of ultra-fine fibers in some parts, it was completely inferior.

1 Example 4 The sheath component of the core-sheath type conductive ultrafine fiber used for the warp in Example 3 was made from nylon-6 with an intrinsic viscosity of IV=0.72.
A polyester core-sheath type conductive ultra-fine conjugate fiber was produced in accordance with the manufacturing method for warp yarns in Example 3, except that polyethylene terephthalate was used instead of polyethylene terephthalate. Using this fiber and the same antistatic ultra-fine composite fiber as in Example 1 at a ratio of 1:10, smooth knitting was performed using a circular knitting machine with a 42G interlock.Next, after removing the sea component, , water jet punching was performed on both sides at a pressure of 20 kg/cj.

The resulting fabric is dense and thick, with ultra-fine fibers intertwined with each other, and the ultra-fine fibers are well defibrated.
It has a structure with many spaces between ultra-fine fibers,
In addition, it was extremely hard to fray. When the frictional charging voltage was measured, it was as low as 300 square meters, and the charge density was also low. When I rubbed an LSI element with this product, I was able to wipe it cleanly, and there was no fear of destroying the element.

〔Effect of the invention〕

The antistatic wiping material of the present invention has less static electricity charging due to friction and has excellent wiping properties. In addition, by using the M-weave of the present invention, it is less likely to cause fraying or disordered mesh than in the case of general woven or knitted products, and furthermore, by applying water jet punching treatment, it has better fraying resistance. It is possible to obtain a fabric that is resistant to scratching and has sufficient cleaning power, and is preferably used as a wiping material in fields such as the pharmaceutical industry and electronic precision industry, which particularly dislike dust generation and static electricity. can.

[Brief explanation of the drawing]

FIGS. 1(a) and ('b) are schematic cross-sectional views showing an example of a tertiary composite fiber forming a core-sheath type ultrafine fiber according to the present invention. In FIG. 8, A: sheath component, B : Core component, C: Sea component or bonding part, respectively. FIGS. 2(a) and (bl) are schematic diagrams showing a textile structure with preferable adaptation requirements of the present invention. FIG. 3 is a schematic diagram showing a knitting structure with preferable adaptation requirements of the present invention. is a cross-sectional schematic diagram showing a more preferable fabric structure. In the figure, 1: entanglement between threads of the fabric, 2: entanglement between threads of the fabric, 3: warp yarn, and 4: weft yarn. FIG. 6 is a schematic plan view of an ordinary knitted fabric. Patent applicant Toshi Co., Ltd. FIG. 1 (a>
Figure 1 (b) Figure 2 <a)
Figure 2 (b) Figure 3 Figure 4 Figure 5 Figure 6

Claims (6)

[Claims] (1) At least one fabric surface is mainly 0.5~
A woven or knitted fabric mainly composed of threads made of core-sheath type ultrafine fibers of 0.005 denier, and the ultrafine fibers have a block polyether amide or a block polyether amide composition in the core. , a core-sheath type composite ultrafine fiber containing 0.05 to 5% by weight of a polyalkylene ether component as a constituent component of the entire ultrafine fiber, and JIS-L-1094-
An antistatic wiping material characterized in that the woven or knitted fabric has a frictional charging voltage of 3000 V or less as measured based on the 1980B method. (2) At least one fabric surface is mainly 0.5~
A woven or knitted fabric mainly composed of threads made of 0.005 denier ultrafine fibers, and the ultrafine fibers are
The core contains 0.5 to 40% by weight of conductive fine particles based on the entire ultrafine fiber, and is mixed with 1% by weight or more of a core-sheath type composite ultrafine fiber, and J.I.
An antistatic wiping material characterized in that the woven or knitted fabric has a frictional charging voltage of 3000 V or less as measured based on the SL-1094-1980B method. (3) The ultra-fine fiber has a block polyether amide or a block polyether amide composition in its core, and the ratio of the polyalkylene ether component to the entire ultra-fine fiber is 0.05 to 5. The antistatic wiping material according to claim 2, which is mainly composed of a core-sheath type composite ultrafine fiber containing % by weight. (4) The texture of the woven or knitted fabric has two or more warp yarns in pairs,
The antistatic wiping material according to claims (1) to (3), which is a twisted fabric in which one and/or a plurality of weft threads intersect to form a twisted structure (tangle structure). (5) Claims (1)-(
The antistatic wiping material described in 3). (6) Claims (1) to (5) wherein at least ultrafine fibers are entangled both between and within the yarns of the woven or knitted material.
) anti-static wiping material.