JPH01266237A - Wiping material and production thereof - Google Patents

Abstract

PURPOSE:To obtain the subject material, excellent in cleaning power without fraying and mesh disorder and hardly dusting even without carrying out water jet punching treatment, by crossing paired warp yarns of ultrafine fibers and weft yarns and providing a leno structure. CONSTITUTION:Yarns of 0.5-0.005-denier ultrafine fibers are formed into war yarns of paired constitution of ground warp yarns (N) and doup warp yarns (M) and the positions of the warp yarns are changed for every one and/or plural weft yarns, crossed and twisted to form leno meshes. Thereby, the aimed material is obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a wiping material that has good wiping properties and is less likely to peel or mess when used as a wiping material, and a method for producing the same. It is related to.

[Prior Art] Many wiping materials are already made of fibers derived from natural products such as cellulose, but these materials are inferior in strength and durability. In order to improve such strength and durability and further increase cleaning power, the fiber surface area is increased, which increases the adsorption surface.
For the purpose of obtaining excellent cleaning power, materials using ultrafine fibers, such as ■Japanese Patent Publication No. 59-30419 ■Japanese Patent Publication No. 61-10
3428■ Japanese Patent Publication No. 61-58573 and the like are disclosed.

In particular, by using flat cross-section fibers, when compared with the same fineness, it is possible to obtain a larger surface area and reduce the strength loss of ultrafine fibers. It is stated that both hydrophilic stains and lipophilic stains can be removed.

However, such combinations of 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. There was a problem.

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, as in the case of knitting or weaving the weaving itself densely. It has been shown that it shrinks at the same time as fibrillation. In this case, the material had to be a mixture of nylon, which has low strength.

In addition, item (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, there is an unavoidable drawback that fraying and meshing are likely to occur.

On the other hand, in (2), as a method of obtaining a high-density woven or knitted fabric with less selvage or irregularities, a high-pressure water stream is injected onto a woven or knitted fabric made of ultra-fine fibers, and Both of these documents describe that by intertwining ultrafine fibers, a woven or knitted fabric with less selvage and stitch slippage can be obtained.

However, even if such water jet punching is used, it may be less effective depending on the type of wi knitted fabric, and if the injection pressure is increased to improve this, the ultrafine fibers may be easily cut or fibrillated. In addition, when fibers contain antistatic substances for the purpose of imparting antistatic properties, they are particularly susceptible to fibrillation, and in recent years, they are particularly susceptible to dust generation, and in addition, fibers with antistatic properties, conductivity, etc. computer rooms, electronic parts manufacturing factories,
There have been many cases where this has caused inconvenience when used in fields such as special medical rooms.

[Problem to be solved by the invention]

An object of the present invention is to provide a wiping material using ultrafine fibers that is less prone to fraying and disorder, less likely to generate dust, and has excellent cleaning power, and a method for producing the same. be.

[Means to solve the problem]

In order to achieve the object of the present invention, the present inventors have intensively studied the woven and knitted structure, and have found that in the woven fabric, entanglements are formed between yarns. For those with a textured structure, or for knitted fabrics, the sinker loops have a crossed structure, and the base M! 1x for i and m
By using a warp knitting structure with the least number of floating yarns, which forms one cord and overlaps 1×1 cords that are wrapped in the opposite direction, it prevents fraying and irregular stitches. Furthermore, even when using threads that are easy to fibrillate, the ultra-fine fibers can be easily entangled both between the threads and within the threads, minimizing fraying and disordered mesh. The present invention was achieved by discovering that it is possible to generate less dust.

That is, the present invention has the following configuration.

(1) A wiping material characterized in that it is a woven fabric mainly composed of threads made of ultra-fine fibers of 0.5 to 0.005 deniers, and has a woven structure (entangled structure).

(2) The wiping material according to claim 11, wherein at least ultrafine fibers are entangled both between and within the yarns of the woven fabric.

(3) A knitted fabric having a warp knitting structure consisting of a base texture and a surface texture mainly composed of yarns made of ultra-fine fibers of 0.5 to 0.005 deniers, wherein the knitted fabric structure constitutes the base texture. After forming a loop in the first course, one warp thread is silk-wrapped in the second course by being wrapped around an adjacent wale to form a loop, and in the third course it is silk-wrapped again in the same wale as in the first course. It has a 1xl closed tricot weave, and the warp yarns constituting the front weave are ramped in the opposite direction and overlapped with the base weave. Wiping material.

(4) The wiping material according to claim 3, wherein at least a small number of ultra-fine fibers are entangled both between the yarns and within the yarns of the knitted fabric.

(5) When weaving mainly ultrafine fibers of 0.5 to 0.005 deniers and/or multicomponent fibers capable of forming the ultrafine fibers, two or more warps are formed in pairs, and one A wiping material characterized in that a tangled warp is used as the ground warp and the other is used as the ground warp, and the tangled warp and the ground warp are crossed every 1 and/or 49 weft threads and twisted to form a tangled structure. manufacturing method.

(6) When knitting mainly ultrafine fibers of 0.5 to O, OO5 deniers and/or multicomponent fibers capable of forming the ultrafine fibers, two reeds are used, and in the rear reed, , after the back warp forms a loop in the first course, in the second course it is hung over the next wale to form a loop, and in the third course it returns to the same wale as in the first course. A method for producing a wiping material, characterized in that the yarn is fed to form a 1×1 closed rotary cone, and in the forelimbs, the 1×1 cords are overlaid and knitted by roughening in the opposite direction to the rear reed. .

(7) The method for producing a wiping material according to claim 5 or 6, wherein the woven or knitted fabric is shrunk by injecting at least 5 to 200 kg/C1d of liquid from a large number of small holes onto the woven or knitted fabric.

Ultra-fine fibers of 0.5 to 0.005 deniers can be made by a method using polymer array fibers, commonly called seabird type composite fibers, and the island components can be made from sea-sea islands where the island components constitute sea islands. It may also be made from a type composite polymer array fiber. In this case, the sea component may be extracted or separated using a solvent or a separating agent, or it may be separated into a peelable/split type fiber consisting of two or more components A and B. Alternatively, ultrafine fibers may be directly obtained by a direct spinning method. Regarding the manufacturing method of such ultra-fine fibers, for example, they can be obtained by several methods described in Kagaku to Kogyo, Vol. 36, pages 521-523. From the viewpoint of ease, it is preferable to use multicomponent composite fibers that generate ultrafine fibers.

The fineness of the ultra-fine fibers may be within the above range, but is 0.1
The range of 0.005 to 0.005 denier is more preferable, particularly 0.005 denier.
07~O, OO7 denier is most preferred.

If the fiber is outside this range, for example, thicker than 0.5 denier, sufficient cleaning power will not be obtained, and conversely, if it is thinner than 0°005 denier, the fiber strength will be too weak and the fiber will break during cleaning. This is not preferable because it tends to cause the problem of 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.

Regarding the tissue structure of the woven fabric, the normal woven fabric is shown in Fig. 4(a).
), the warp threads are always parallel to each other and the weft threads intersect at right angles to the Mi weave structure. ), the warp yarns are at least entwined and the positions of the warp yarns are reversed, crossed, and (twisted) for each book of warp threads, resulting in a lewd structure. Such a tangled tissue is
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 woven fabrics, the leno warp threads are threaded through the ground belt, then passed above or below the ground warp threads, turned to the opposite side, and then passed through the ground warp threads and then turned to the opposite side. It can be obtained by passing it through a belt and weaving by changing the position of the ground warp threads to the left and right.

By the way, as mentioned above, as a material for wiping,
In conventional technology, the main focus is on increasing the cleaning power, and by arranging many microfibers on the surface of the fabric,
Efforts have been made to create Mi-woven fabrics, such as providing a large number of floats, but fabrics with such a leno U-woven structure, such as gauze weaves and textures, generally have watermarks, that is, openwork. summer clothing, curtains,
Since it has been mainly used for coarse fabrics such as sieves, it has not been anticipated that the transparent fabric structure could be used as a wiping material.

In the present invention, by constructing an interlaced structure between yarns, that is, a leno-m weave, mainly using ultra-fine fibers, the effect of such entanglement becomes noticeable, and the fraying and irregularities are minimized, and They discovered that it has excellent cleaning power.

The density of such tangles (entanglements) is preferably 200 strands/a11 or more, more preferably 300 strands/ci or more, and particularly preferably 500 strands/ci or more.

In addition, the weave density varies depending on the total fineness of the yarn used, and cannot be determined unconditionally, but if it is in the range of 50 to 100 deniers, the weave density is 100 warp/inch or more (counting the ground warp and leno warp separately) ), preferably 120
Book/inch is preferable.

The weft density is preferably 50 yarns/inch or more, and 7
It is more preferable if it is 0 lines/inch or more.

The fabric woven into such a leno weave structure has little fraying or irregularities even as it is, but a high-pressure water stream is further injected onto the fabric using a water punch described later, and the fabric shrinks at the same time as shown in FIG. 3. If the ultra-fine fibers are intertwined both between yarns and within the yarn, there will be no see-through, no fraying,
This method is more preferable because it reduces the number of irregularities. In this case, it is another effect of the present invention that the same or higher resistance to fraying and roughness can be obtained with a treatment pressure that is several orders of magnitude lower than when treating general woven or knitted fabrics. .

On the other hand, the knitting structure of the present invention has a warp knitting structure consisting of a base texture and a surface texture, as shown in FIG. , after forming a loop in the first course, in the second course it is hung over an adjacent wale to form a loop, and in the third course the same wale as in the first course is used again to form a silk wrapped structure. The warp yarns constituting the front weave are characterized by having a structure in which a 1×1 cord wrapped in the opposite direction is superimposed on the base weave, which is a so-called double woven structure. It takes iu
Weaving uses at least two reeds, and in 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 is possible to knit and structure the yarn by feeding the yarn, and wrapping the same course in the direction opposite to the rear reed in the front stream.

In general, knitting structures are classified into two major structures: weft knitting and warp knitting, but among warp knitting, half tricot and satin tricot structures have a thicker floating number (without thickening), and have the smallest structure. In addition, the material for wiping should be knitted in a structure with the most intertwining points.
This is preferable because there is less turbulence and dust is less likely to be generated.

Of course, if a high-pressure water jet is sprayed on this 't4 Mi weave to entangle the ultra-fine fibers both between the yarns and within the yarns, it will become even less entangled and have fewer irregularities. More preferred. Further, even when treated at low pressure, excellent effects can be obtained, as in the case of the above-mentioned IUI weave.

Now, regarding water jet punching treatment, which is a preferable requirement, a high-pressure fluid of 5 to 200 kg/cm2, preferably a water stream, is injected onto one or both sides of the woven or knitted fabric through small holes, thereby shrinking the fabric and making it ultra-fine. Ideally, this will cause the fibers to get entangled with each other; if the spray pressure is too low, the ultra-fine fibers will get entangled (but if it is too high, the ultra-fine fibers will be cut, which will reverse dust generation). The range of 5 to 200 kg/cm2 is preferable because it tends to occur.

It can be appropriately determined 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 a portion of the sea component is removed by the water jet punch, which is desirable and not a disadvantage. This does not impede the effectiveness of the invention. On the contrary, ultra-fine fibers are generated by using sea components that are easily removed, sea components that are easily formed into ultra-fine fibers by peeling, and multi-component split fibers that are easily formed into ultra-fine fibers by peeling. This is preferable because it allows the ultrafine fibers constituting the woven or knitted fabric to be intertwined at the same time.

The water jet punch itself is well known, and there is no need to list any known examples here. There is a pattern,
None or both are applicable.

The concept of water jet punching is different from the conventional concept of intertwining ultrafine short fibers, and in the present invention, preferably after forming ultrafine multifilament yarn into a woven or knitted fabric, Ultra-fine fibers that have a high entanglement or entanglement density, or a tissue structure with the lowest number of floating fibers, are then shrunk by a water jet punch, and at the same time, a slight loop (sag) is created due to the shrinkage. They discovered that by intertwining the threads both between the threads and within the threads, fraying and disordered stitches can be minimized.

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

〔Example〕

Example 1 Using a die as shown in Japanese Patent Publication No. 44-18369, spinning and trial weaving were carried out under the conditions shown below.

85 parts of nylon-6 as island component, 5 parts as sea component
5. Using sodium sulfonate isophthalic acid as the acid component.
Copolymerized polyethylene terephthalate containing 0 mol% 1
5 parts were spun and drawn to obtain a two-component composite (sea-island) multifilament yarn. Next, the composite fiber is used for all of the ground warp, leno warp and weft, and the position of the leno warp is changed and crossed for each weft, as shown in Figure 1 f.
It was woven into a leno tissue as shown in al. This product was treated in a 2% alkaline aqueous solution at 95° C. for 20 minutes to shrink and decompose and remove sea components. The resulting fabric is completely composed of ultra-fine fibers, so it does not fray, does not easily cause clutter, is flexible, and does not leave fingerprints on glasses once or twice. Karu (I was able to wipe it clean just by rubbing it.

(11 spinning Sea-island type composite spinneret (2) Fiber 50D-1Of (70 islands) Island/sea ratio = 85/15 Island fineness = 0.061d (3) Loom Looming loom with semi-heddle (4) Weaving density Ground warp 65 Main/inch twine warp 65 pieces/inch Weft 80 pieces/inch (5) Thickness after weaving = 0.15 mm Eye size = 62 g/n ( (6) Thickness after sea removal = 0.13 mm Eye size = 75 glrd Fineness of ultrafine fiber = 0.07 d Example 2 The fabric obtained in Example 1 was treated once with a water jet punch treatment pressure of 50 kg/cal and a processing speed of 50 a++/min while swinging the nozzle.

After the treatment, the fabric further shrunk to have a thickness of 0.19 mm and a basis weight of 90 g/I. This fabric was less likely to fray and cause irregularities than the fabric of Example 1.

Example 3 Using the same composite fiber as in Example 1, both the front and rear reeds]
, was knitted into a double-density structure using a course of X1. This material was post-treated in the same manner as in Example 1 to obtain a fabric.

(1) Knitting machine Tricot knitting machine (2) Knitted Mi weave Double Denbi (3) Thickness after knitting = 0.36 mm Eye size = 135 g/1rr (4) Thickness after sea removal - 0.30 mm Eye size = 164 glrd Example 4 The knitted fabric of Example 3 was waterjet punched at a pressure of 40
Both sides were treated with kg/col. The obtained fabric was also resistant to fraying and chafing.

Example 5 Polyethylene glycol diammonium adipate obtained by reacting polyethylene glycol diamine with an average molecular weight of 4000 and adipic acid, caprolactam and hexamethylene diammonium isophthalate were used, and sodium dodecylbenzenesulfonate and 1.3
．． 5) Limethyl-2,4,6-tri(3,5-ter)
90 parts of polyethylene terephthalate containing 0.7% by weight of a block polyether amide composition obtained by adding t-butyl 4-hydroxybenzyl) benzene and polymerizing it, and 10 parts of polystyrene as the sea component. Spinning and knitting were performed under the conditions shown below.

(1) Spinning Sea-island type composite spinneret (2) Fiber 50D-10f (70 islands) Island/sea ratio = 90/10 Island fineness = 0.065d (3) Knitting machine Tricot knitting machine (4) Knitting structure Double denbi (5) Finished knitting Thickness = 0.33 mm Dimension A = 120 g/A (6) Thickness after sea removal = 0.27 mm Dimension A - 135 glrd Fineness of ultra-fine fiber - 0.07 d When the frictional charging voltage of the obtained knitted fabric was measured, 900V
It was confirmed that the antistatic properties were low and had good antistatic properties. In addition, it was not prone to peeling or churling, and had excellent wiping properties.

〔Effect of the invention〕

The woven and knitted fabric structure of the present invention does not easily peel or disturb the texture even without water jet punching, and generates less dust, so it is used in computer rooms, electronic parts manufacturing factories, special medical facilities, etc., which has been in increasing demand in recent years. It can be preferably used as a wiping material in areas where dust generation is particularly objectionable, such as in rooms.

In addition, compared to ordinary woven or knitted products, it is possible to obtain a fabric that has excellent resistance to fraying and turbulence, as well as good cleaning ability, by water jet punching treatment at a lower pressure. It is now possible to use ultra-fine fibers that are prone to frosting and fibrillation, and antistatic properties can be easily imparted.

[Brief explanation of the drawing]

Fig. 1 fa) and (bl are schematic diagrams showing the twisted weave according to the present invention. In the figure, N: ground warp, M: lewd warp. Fig. 2 is a schematic diagram showing the double denbi silk weaving. The third is a schematic diagram showing a more preferable fabric structure of the present invention, and in the figure, 1: entanglement between threads of the fabric, 2: entanglement within the threads of the fabric, 3: warp, and 4: weft. Figure 4 (al is a schematic diagram showing the structure of a woven fabric conventionally used for boat fishing, and (b) is a schematic diagram showing the structure of a knitted fabric. Patent applicant: Azuma Shi Co., Ltd. Figure 1 (a)
Figure 1 (b) Figure 2

Claims (7)

[Claims] (1) A woven fabric mainly composed of yarns made of ultra-fine fibers of 0.5 to 0.005 deniers, the woven structure having two or more of the warp yarns in pairs, one weft yarn and/or A wiping material characterized by multiple strands intersecting each other to form a twisting structure. (2) The wiping material according to claim (1), wherein at least the ultra-fine fibers are entangled both between and within the threads of the woven fabric. (3) A knitted fabric having a warp knitting structure consisting of a base texture and a surface texture mainly composed of yarns made of ultra-fine fibers of 0.5 to 0.005 deniers, wherein the knitted fabric structure constitutes the base texture. After forming a loop in the first course, one warp thread is silk-wrapped in the second course by being wrapped around an adjacent wale to form a loop, and in the third course it is silk-wrapped again in the same wale as in the first course. It has a 1×1 closed tricot weave, and the warp yarns constituting the front weave are wrapped in the opposite direction and overlapped with the base weave. Wiping material. (4) The wiping material according to claim (3), wherein at least the ultrafine fibers are entangled both between and within the yarns of the knitted fabric. (5) When weaving mainly ultrafine fibers of 0.5 to 0.005 deniers and/or multicomponent fibers capable of forming the ultrafine fibers, two or more warps are formed in pairs, and one A wiping material characterized in that a tangled warp is used as the ground warp and the other is used as the ground warp, and the tangled warp and the ground warp are crossed and twisted for each weft thread and/or a plurality of weft threads to form a tangled structure. manufacturing method. (6) When knitting mainly ultrafine fibers of 0.5 to 0.005 deniers and/or multicomponent fibers capable of forming the ultrafine fibers, two reeds are used, and in the rear reed, , after the back warp forms a loop in the first course, in the second course it is hung over the next wale to form a loop, and in the third course it returns to the same wale as in the first course. A wiping material that is knitted by feeding yarn to form a 1×1 closed tricot, and wrapping the front reed in the opposite direction to the rear reed and overlapping the 1×1 cords. Manufacturing method. (7) At least 5 to 200 kg/cm^2 to the woven or knitted fabric
The method for producing a wiping material according to claim 5 or 6, wherein the woven or knitted fabric is shrunk by injecting the liquid from a large number of small holes.