JPH0532049B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an ultra-fine napped fabric for applying a coating agent to the surface of glass, wood, metal, plastic, etc. and for wiping off excess coating agent. It is something.

(Prior art) Conventionally, for polishing, coating and wiping tableware and furniture,
In addition, various polishing cloths, sewing base cloths, and wiping cloths are used for coating and finishing electronic materials such as semiconductors and insulators, or for resurfacing and polishing electrophotographic photoreceptors. Various ideas have been made regarding the types of abrasives and coating agents, and the types and configurations of base fabrics impregnated with these. however,
Conventional products have not always been satisfactory in terms of wiping effect, uniformity of application, finishing effect, durability of the base fabric, etc.

(Objective of the Invention) The object of the present invention is to improve the drawbacks of conventional products and to provide a napped fabric that is used as a coating and wiping fabric and has less shedding fuzz and excellent coating and wiping properties.

(Structure of the Invention) That is, the present invention provides a raw fabric that is made of ultrafine fibers of 0.01 to 0.5 denier and has napped fibers with a length of 0.1 to 5 mm, and the density of the napped fibers is in the range of 1500 to 40000 fibers/ ^cm2 . Wash it with water or hot water in a jet dyeing machine, or wash it with a jet water jet, and check the number of fluff that falls off by brushing test to be 500/.
This ultra-fine napped fabric for coating and wiping is obtained by obtaining a fabric having napped hair with a low number of shedding fuzz of cm ² or less, and impregnating the fabric with an oil-based or water-based coating agent.

The thickness of the ultrafine fiber used in the present invention is
It ranges from 0.01 to 0.5 denier. A material with a denier of less than 0.01 denier is unsuitable because it tends to be cut during use, and the cut fluff becomes dust and tends to adhere to the object to be polished. If it exceeds 0.5 denier, the effective surface area per unit area becomes small, and therefore the effects of the present invention as described later cannot be fully achieved, so it is not preferable. Any known ultrafine fibers can be used. Examples of these include ultrafine fibers obtained by separating and peeling multilayer composite fibers made of two-component polymers by mechanical means such as raising, and sea-island composite fibers made of two-component polymers. There are ultrafine fibers obtained by dissolving or decomposing sea components from fibers using organic solvents or hydrolyzing agents, and ultrafine fibers obtained by means such as high-speed spinning and multistage drawing.

In the present invention, a woven fabric is first created using such ultrafine fibers, or filament yarns or spun yarns of composite fibers that can generate such ultrafine fibers in a later process, as warps and/or wefts. Knitted and nonwoven fabrics have poor dimensional stability and are therefore not suitable for the purposes of the present invention. There are no particular limitations on the thickness of the yarn or the structure/density of the fabric, but ultrafine fibers or
A filament yarn of a composite fiber that can generate ultra-fine fibers is used as the weft yarn, and a filament yarn made of polyester fiber of a normal thickness or a woolly processed yarn is used as the warp yarn, and is woven into a satin texture. This is preferable in terms of ease of use and a small number of fluff that falls off.

The obtained fabric is then raised by a known method using a cloth raising machine or the like. The degree of napping is such that the density of the nape formed is 1,500 to 40,000, preferably 5,000.
It must be within the range of ~30,000 lines/ ^cm2 . If the density of piloerection is less than 1500/ ^cm2 ,
Of course, when the nap length is on the short side within the range used in the present invention, even when it is on the long side, the substantial surface area per unit area cannot be increased, and the effects of the present invention cannot be obtained. In addition, the piloerection density is
If the number exceeds 40,000 fibers/cm ² , the process of damaging the nap fibers is significant due to excessive nap processing during the production of the nap, and therefore a large amount of nap (fluff) falls off during use, making it unsuitable.

When using a split-peel type compound sincerity, split-peel into ultra-fine fibers also occurs during this raising process. When sea-island composite fibers are used, ultrafine fibers are generated by dissolving or decomposing and removing sea components before or after the raising process.

The length of the formed nap must be in the range of 0.1 to 5 mm, preferably 0.5 to 3 mm. The length of the nap can also be adjusted appropriately using a shearing machine. When the length of the raised pils is less than 0.1 mm, the effect of raising the pils is not exhibited and the substantial surface area per unit area cannot be increased.
In addition, if the length of the napped fabric exceeds 5 mm, the napped fibers will become entangled in the manufacturing process of the napped fabric, causing problems such as pilling, which will damage the napped surface. Since it cannot be used for coating or wiping, it has poor performance for coating or wiping.Furthermore, during use for coating or wiping, the long nap length causes it to be cut and causes dust, which is undesirable.In any case, the purpose of the present invention is to is not achieved.

The resulting ultra-fine napped fabric has a normal brushing test of 1000 fluffs/fuzz.
cm ² or more and cannot be used for the purpose of the present invention. In the ultra-fine napped fabric of the present invention, it is necessary to use one in which the number of shedding fluffs determined by the brushing test is 500 or less/cm ² , which is less than half the level of conventional fabrics. Number of fluff shedding is 100
By setting the fiber density to less than 1/cm ² , the level is less than 1/10 of that of conventional textiles.

Here, the number of fluff that falls off in the brushing test refers to the number of fluff that adheres to the etiquette brush (per cm ² )
means. Therefore, in order to obtain the ultrafine napped fabric of the present invention, the fluff adhering to the surface and the napped easily cut are removed from the ultrafine napped fabric obtained as described above by physical means. There is a need.
Such physical means include washing the fabric with water (or hot water) in a jet dyeing machine, spraying jet water (or hot water) on the napping surface of the fabric, and sucking the fluff with a large suction machine. There are ways to remove it.
A known liquid color machine can be used, and the appropriate treatment temperature is 10 to 100°C, and the treatment time is approximately 10 to 120 minutes. As a jet water flow, the pressure is 5~
100Kg/cm ² G is preferable, and the water temperature is 10~
A temperature of 80℃ is suitable. In the present invention, for example, while the ultrafine napped fabric is run by a belt conveyor or a rotating drum, a jet water jet is jetted from a jet jet nozzle onto the napped surface of the textile. The shape and arrangement of the injection nozzle, etc.
It is only necessary to appropriately adjust and select so that the raised surface of the fabric is uniformly sprayed and washed. In the present invention, a method of washing by spraying a jet water stream is particularly preferred. The ultrafine napped fabric thus washed is then dried by a known method to become a product.

The ultrafine napped fabric thus obtained has a shedding number of fluffs of 500 strands/cm ² or less in a brushing test, particularly 100 strands/cm ² or less when a jet water stream is used, and is preferably used for the purposes described below.

In addition, the ultrafine napped fabric of the present invention may be coated with a resin such as polyurethane or melamine from the back side, for example, to fix the roots of the napped fabric. In order to obtain the ultra-fine napped fabric of the present invention, conventional methods such as scouring, relaxing, and heat setting are employed in the relevant technology, but post-processing such as dyeing and antistatic processing is unnecessary except in special cases. .

The ultrafine napped fabric of the present invention can be used for polishing or wiping the surfaces of glass, wood, metal, plastic, etc., and as a base material for coating. Usually, for wiping, it is impregnated with low viscosity oil. In the case of coating, various coatings or impregnation with dyes are used. The ultra-fine napped fabric is used by cutting it into appropriate widths depending on the purpose and by coating the back side with acrylic resin or the like to adjust the hardness appropriately.

(Actions and Effects of the Invention) When the ultrafine napped fabric of the present invention is used for coating or wiping, the following excellent effects are achieved.

(1) Since the surface is densely covered with napped microfibers, the effective surface area per unit area is several dozen times larger than that of a normal wiping cloth. As a result, the effect of wiping away dust etc. is very large. That is, as the denier becomes thinner, the surface area of the fiber becomes larger for the same weight, but in the case of the present invention, since the ultrafine fiber is used in the form of a nap, it has a larger surface area than a plate fiber. The actual surface area can be increased. Furthermore, since the ultrafine fibers are used with high-density napping, the surface area can be further increased. As described above, in the present invention, by using ultrafine fibers, using them in the form of napped fibers, and using the napped fibers at a high density, the effective surface area per unit area is greater than that of conventional coating fabrics or wiping fabrics. It was possible to make it several tens of times larger than before.

(2) The napped fibers used in the present invention are achieved with ultrafine fibers, and the napped length is in the range of 0.1 to 5 mm, so it is possible to impart appropriate elasticity, and the napped density is 1,500 to 40,000 fibers. /cm ² , so most of the individual napped fibers are erect and densely grown. Therefore, the interfiber spaces formed by the raised fluff are extremely small, and
It is characterized by its large number of particles, and shows an excellent clean-up effect by trapping fine dust on the micron scale.

(3) Since the raised fabric of the present invention uses ultrafine fibers of 0.01 to 0.5 denier, the coating agent can be sufficiently impregnated into the fabric by utilizing the capillary phenomenon caused by the ultrafine fibers, and it can last for a long time. It is possible to use the liniment over a period of time. Further, since the napped fabric of the present invention has the above-mentioned interfiber spaces, it is possible to apply the coating agent very thinly and uniformly by simply applying the coating agent to the object to be coated.

(4) The napped fabric of the present invention has a combination of the use of ultrafine fibers for the napped, the relatively short length of the napped, and the high density of the napped, so that it can be used on objects to be coated and It is possible to obtain a beautiful and highly accurate finishing effect without causing unevenness on the fabric due to work.

(5) Furthermore, since the fabric of the present invention has a low number of fallen fuzz in a brushing test of less than 500 fuzz/cm ² , when the fabric is used for coating or wiping, the napped fuzz may fall off or be cut. This has the effect of reducing the generation of new dust. In addition, since it is a woven fabric, it has sufficient tissue point restraining force, so these effects are highly durable and can be used repeatedly. That is,
In conventional ultra-fine napped fabrics, the fluff fibers fall off during use, and the fluffs adhere to the surface of the object to be coated or the object to be wiped, or
There were problems such as the fallen fluff floating in the air even if it did not adhere. The fabric of the present invention has a shedding fuzz count of 500 strands/cm ² in the brushing test.
This problem has been solved by reducing the number of fibers to less than half that of conventional textiles. As mentioned above, the number of fluff shed by the brushing test in the present invention is measured under harsher conditions than the standing fluff is subjected to by normal application and wiping. The above-mentioned problems can be solved by reducing the amount to less than half that of the woven fabric. In particular, products that reduce the number of shedding fluff to 100 strands/ ^cm2 , which is less than 1/10 of conventional fabrics, are extremely susceptible to the shedding fluff floating in the air and turning into dust. It is effective for coating and wiping applications in computer rooms and clean rooms of semiconductor factories, which are undesirable.

Hereinafter, the present invention will be explained in detail with reference to Examples.

Example 1 According to the method disclosed in U.S. Pat. A hollow composite fiber was produced which extended in the longitudinal direction of the fiber and constituted a tubular body as a whole.
In this hollow composite fiber, the weight ratio of all polyamide components to all polyester components was 1:1, the denier of each component was 0.23, the denier of the hollow composite fiber was 3.7, and the hollowness ratio was 8%. .

Single-twist yarn (S120T/m) of multifilament (300de/80fil) of the hollow composite fiber was used as the weft.
The warp is made of polyethylene terephthalate woolly yarn (100de/24fil x 2).
(S150T/m), the fabric density is 70 warps/inch,
A 4-ply satin fabric with a weft of 56 threads/inch was created.

The obtained fabric was first relaxed at a temperature of 98℃ for 30 minutes, then dried at 120℃ for 3 minutes, and then one side was
The cloth was raised 15 times at a running speed of 30 m/min using a cloth raising machine with a No. 33 cloth. Then the temperature
Preset at 170°C for 30 seconds. The average single fiber denier of the napped fibers of the obtained ultrafine napped fabric was 0.23, the napped length was 0.3 to 2 mm, and the napped density was 7.2×10 ³ fibers/cm ² (this woven fabric is referred to as Fabric A).

Fabric A was washed using a circular dyeing machine (flow dyeing machine manufactured by Hisaka Seisakusho) at a temperature of 80°C for 30 minutes (bath ratio 1:30, cloth speed 100 m/min), and then washed at 120°C. Dry for 3 minutes (this fabric is called Fabric B)
).

Fabric B is run on a conveyor belt at a speed of 10 m/min, and the raised surface is heated at a temperature of 20°C for 30 minutes.
The cloth was washed by spraying a sheet water stream at a high pressure of Kg/cm ² G from a fan-shaped spray nozzle (placed at a spacing of 2 cm) (the distance between the nozzle spray port and the fabric was 5 cm). then 120
It was dried at ℃ for 3 minutes (this fabric is referred to as fabric C).

Using an etiquette brush, lightly brush the raised surfaces of each of the fabrics A, B, and C placed on a flat surface in the forward and reverse directions.
Brushing was performed 10 times, and the number of fuzz attached to the etiquette brush was measured (average value of 5 times). In addition,
The etiquette brush used in the brushing test was a commercially available etiquette brush made by Nippon Seal Co., Ltd., model number H-16, and had the form described in Japanese Utility Model Publication No. 13586/1983. The brush surface consists of a short raised surface that lies down in one direction, and the material used for the raised hair is nylon. In addition, lightly brushing in the forward and reverse directions means placing the brush on the surface of the fabric that is the test piece and moving the brush in parallel at the normal brushing speed (750 cm ± 100 cm/min) in the direction in which the upturned nap surface acts. Move and move, 10 in each direction
Brushing times. For this, for example, width 5
It is recommended to prepare a piece of fabric with a length of 20 cm and brush it 10 times in one length direction to measure the number of fuzz, then brush it in the opposite direction 10 times to measure the number of fuzz. To calculate the number of fuzz, the number of fuzz collected by brushing is divided by the surface area of the test piece fabric surface to obtain the number (fuzz/cm ² ). At this time,
The contact pressure between the brush and the surface of the test piece should be just enough to bring it into contact due to the brush's own weight, and it is not necessary to actively apply pressure, but it should be supported so that the raised surface of the brush and the surface of the test piece fabric are in stable contact. There is a need. The results were as shown below.

Fabric A (comparative example) 1000 pieces/cm ² or more Fabric B (present invention) 390 pieces/cm ² Fabric C (present invention) 6 pieces/cm ² A known silicone-based polishing agent is added to the fabrics A, B, and C. Coating agent (Takamatsu S-40; Takamatsu Yushi Co., Ltd.)
The material was impregnated with a 30% aqueous solution of A. When this fabric was applied to a glass surface, a uniform and beautiful coated surface was obtained with fabrics B and C, whereas with fabric A, fluff that fell off adhered to the coated surface. I was not able to achieve this.

Example 2 According to the method disclosed in Japanese Patent Application Laid-Open No. 54-41302,
Polyester (polyethylene terephthalate) components and polystyrene components are alternately adjacent to each other.
A hollow composite fiber was produced in which 32 hollow composite fibers were arranged in a ring and extended in the longitudinal direction of the fiber to form a tubular body as a whole. In this hollow composite fiber, the weight ratio of all polyester components to all polystyrene components is 1:1, and the denier of each component is
0.07, the denier of the hollow composite fiber was 2.3, and the hollowness ratio was 5%.

As the weft, single-twist yarn (S150T/m) of the multi-filament (600de/260fil) hollow composite fiber was used.
The warp is made of polyethylene terephthalate woolly yarn (100de/24fi x 2).
(S150T/m), the fabric density is 70 warps/inch,
Four pieces of satin fabric with a weft of 56 threads/inch were created.

The obtained fabric was first relaxed at a temperature of 98°C for 30 minutes, dried at 120°C for 3 minutes, and then washed five times with trichlorethylene to dissolve and remove substantially all of the polystyrene component in the hollow composite fibers. . Thereafter, the fabric was dried and one side was raised 15 times at a running speed of 30 m/min using a cloth raising machine with No. 33 cloth. Then the temperature is 170℃
I preset it for 30 seconds. The obtained ultrafine napped fabric was washed with jet water in the same manner as in Example 1.

The average single fiber denier of the napped fibers of the ultrafine napped fabric thus obtained was 0.07 de, the napped length was 0.2 to 0.7 mm,
The density of raised fluff was 2.2×10 ³ hairs/cm ² , and the density of shed fluffs by brushing test was 45 hairs/cm ² . In addition,
The number of fluff that falls off without jet water treatment is 1000.
Book/ ^cm2 or more.

The fabric was impregnated with a 40% aqueous solution of a polyol-based water-soluble polyurethane coating agent (Evaphanol N-7; manufactured by NICCA Chemical Industry Co., Ltd.), which is known as a glass condensation inhibitor, by a padding method. When this fabric was used to coat a glass surface, a uniform coated surface was obtained with the fabric of the present invention, whereas with a comparative fabric that had been subjected to jet water treatment, the fluff that fell off remained on the coated surface. The object of the present invention could not be achieved.

Claims (1)

[Claims] 1. It is made of ultrafine fibers of 0.01 to 0.5 denier and has naps with a length of 0.1 to 5 mm, and the density of the naps is 1500.
The raw fabric in the range of ~40,000 pieces/ ^cm2 is washed with water or hot water in a jet dyeing machine, or washed with jet water jet, and the number of fallen fuzz is 500 by brushing test. 1. An ultra-fine napped fabric for coating and wiping, characterized in that the fabric has napped fibers with a low shedding number of fluffs of less than 100 g/cm ² , and is impregnated with an oil-based or water-based coating agent. 2 Number of fluff shed by brushing test is 100
The ultra-fine napped fabric for coating and wiping according to claim 1, which has a thickness of 1 cm ² or less.