JPH11217758A - Nonwoven fabric for washing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain nonwoven fabric for washing that can wipe off the mineral deposits, tea stain, oil soil of dishes in domestic kitchen, kitchen equipment, bath tubs and the like or the tarnish and stain on the glass faces, metal faces and coated faces with water, hot water or in combination thereof with a small amount of detergent. SOLUTION: This nonwoven fabric for washing contains at least 70 wt.% of acrylic fiber groups including >=50% of acrylic fiber each of which has 3 or more stripes of >=5 μm length per 10 μm of the circumference of the filament. In addition, if a fiber layer to which thermally shrinkable fibers are mixed is laminated on and integrated with this nonwoven fabric, the washing effect is much more improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nonwoven fabric for cleaning containing special acrylic fibers in constituent fibers.

[0002]

2. Description of the Related Art Conventionally, nylon scourers have been mainly used for cleaning non-woven fabrics for household and commercial use tableware, kitchen appliances, bathtubs, toilets, and the like. The nylon scourer is obtained by impregnating a 5 to 10 denier polyamide fiber with a resin and adhering it. When used, a detergent mainly containing a surfactant is used in combination. Such a cleaning tool can be cleaned by the physical scraping effect of the scourer and the suspending effect of the detergent.

[0003]

Conventional washing of dishes and bathtubs with a scourer requires the use of a detergent in combination, but the use of a surfactant, which is a main component of the detergent, is minimized in view of environmental problems. Is preferred. Nylon scourers have low oil absorption and only help the detergent to emulsify the oil. In addition, scourers and detergents are pottery, metal,
It has little effect on surface discoloration due to enamel oil burning, protein scorching, tea astringent, water rust, etc. In the case of plastic products, excessive friction may damage the surface.

[0004] The present invention relates to a cleaning nonwoven fabric which is effective in solving the problem of conventional cleaning with a scourer, in which the amount of detergent used is greatly reduced or even without using a detergent.

[0005]

In order to achieve the above object, the cleaning nonwoven fabric of the present invention has a large number of streak-shaped recesses on the fiber surface in the length direction of the fiber, and has a fineness of 0.3 to 2.0 denier. The fiber weight of the fiber aggregate containing at least 70% by weight of the A fiber group consisting of 50% or more of the streaked acrylic fiber and the ordinary acrylic fiber having a fineness of 2.0 denier or less is entangled and integrated, and the basis weight is 30 to It is characterized by being 700 g / m ² .

Further, the cleaning nonwoven fabric of the present invention has a first fiber layer containing at least 80% by weight of the A fiber group, a 40 to 70% by weight of the A fiber group, and a maximum heat shrinkage by heating of 50% or more. A second shrinkable fiber comprising 30 to 60% by weight;
A fiber layer is laminated, the weight ratio of the first fiber layer and the second fiber layer is 2: 1 to 1: 2, both fiber layers are integrated by fiber entanglement, and a large number of fibers are formed on the surface of the first fiber layer. It is preferable that wrinkle-like irregularities are formed.

Further, the nonwoven fabric for cleaning according to the present invention is characterized in that the creasing acrylic fiber has a substantially circular cross section, and has a streak-like recess having a length of 3 μm or more and a length of 5 μm or more per 10 μm in the length direction of the fiber. Preferably, there is. Hereinafter, the contents of the present invention will be described.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Since the nonwoven fabric for cleaning of the present invention is intended for cleaning with water, the fibers constituting the nonwoven fabric must be excellent in hydrophilicity so as to be well adapted to water.
Tableware and bathtubs are also contaminated with oils and fats, and therefore must be excellent in lipophilicity to adsorb and remove them.
It is well known that such fibers include acrylic fibers.

In order to remove the discoloration of the surface of the ceramic or metal, it is desirable that the surface area of the contacting fiber is large, so that the fineness is set to 2 denier or less. Further, since the fiber must have rigidity (waist) to remove dirt, it should have a fineness of 0.3 denier or more. An acrylic fiber having such fineness and having a large number of groove recesses in the length direction on the surface of the fiber is used. Such an acrylic fiber is, for example, Toleron T733 (trade name, manufactured by Toray Industries, Inc.).

[0010] It is necessary for the cleaning nonwoven fabric to have three or more stripe-shaped concave portions on the surface of the acrylic fiber with streaks having a length of 5 µm or more per 10 µm perimeter of the fiber. The streak-shaped recess has a function of scraping and adsorbing dirt from the cleaning surface, and preferably has five or more, and more preferably ten or more.

The A fiber group can be constituted by mixing acrylic fibers with streaks and ordinary acrylic fibers, and acrylic fibers with streaks having a fineness of 0.3 to 2 denier account for 50% or more of them. Must be. This is because a strong contaminant is removed by the fiber surface of the streaked acrylic fiber, so that if the amount of this fiber is small, the cleaning ability is reduced. Ordinary acrylic fiber means a fiber having no many streaks in the length direction on the fiber surface. Also, the acrylic fiber having a streak that is not in the range of 0.3 to 2 denier may be used as a normal acrylic fiber.

The cleaning nonwoven fabric may contain fibers other than the A fiber group, but the amount is less than 30% by weight.

Further, the cleaning nonwoven fabric of the present invention is preferably provided with a large number of irregularities on the surface, since the cleaning ability can be further improved. In order to create irregularities, set A fiber group to 8
The first fiber layer containing 0% by weight or more and the second fiber layer which undergoes surface shrinkage by heating are laminated and integrated before heating, and when heated, the first fiber layer does not shrink and has many wrinkles (irregularities) on the surface. Can be.

The irregularities are semi-cylindrical or granular projections having a width of 1 to 2 mm, and are formed on the surface of the nonwoven fabric at 3 to 3 per square cm.
Zero is preferred. More preferably, the number is 10 to 20.

The second fiber layer has a maximum heat shrinkage by heating of 5
The high-shrinkable fiber of 0% or more is 30 to 60% by weight, and the A fiber group is 40 to 70%. If the high shrinkage fiber is less than 30% by weight, the shrinkage of the nonwoven fabric is insufficient and there are few irregularities on the surface. Conversely, if it exceeds 60% by weight, the shrinkage is too large and the unevenness is extremely fine, making it unsuitable as a cleaning nonwoven fabric. It is. The A fiber group is also required for the second fiber layer from the viewpoint of detergency.

The ratio of the first fiber layer to the second fiber layer is conveniently in the range of 2: 1 to 1: 2, more preferably 1: 2.
It is one. If the second fiber layer is less than 1/3, wrinkles are less likely to occur, and if it is more than 2/3, many wrinkles are reduced and the solids are less likely to be trapped.

The heat shrinkage increases the area shrinkage of the nonwoven fabric by 30 to 70.
%, That is, the area after the heat treatment is adjusted to be in the range of 70 to 30% of the area before the treatment from the viewpoint of the size and variation of wrinkles and the good texture of the nonwoven fabric surface.

The highly shrinkable fibers are most preferably ethylene-propylene random copolymer fibers. For example, PNE
(Trade name, manufactured by Daiwa Spinning Co., Ltd.).

The entanglement of the fibers in each fiber layer and both fiber layers is performed by a needle punching method, a spunlace processing method using a high-pressure water flow, or a combination of the two processing methods. It is good to make this confound by lace processing. Non-woven fabric can be made by needle punch alone, and the cleaning power is sufficient as a non-woven fabric for cleaning.However, the spunlace processing makes the constituent fiber groups more closely entangled, so not only the appearance of the product is good but also cleaning This has the effect of reducing fuzzing during use as a nonwoven fabric. Spunlace processing is 40
What is necessary is just to carry out by a conventional method with pressure water of kg / cm < ² > or more.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the contents of the present invention will be specifically described with reference to embodiments. The fibers used in the examples and comparative examples are as follows. Acrylic fiber with streaks Toleron T733 (trade name, manufactured by Toray Industries, Inc.) having a fineness of 1.3 denier and a fiber length of 38 mm. Ordinary acrylic fiber 0.9 denier fineness, 38 mm fiber length Toleron T2362 (trade name,
Toray Industries, Inc.). High shrinkable fiber Ethylene-propylene random copolymer fiber PNE having a fineness of 2 denier and a fiber length of 51 mm (trade name, manufactured by Daiwa Spinning Co., Ltd.). Dividable composite fiber The fiber sectional structure of 2 deniers and 38 mm in fiber length is divided into 8 chrysanthemum petals, and each petal-shaped cross section is composed of polyester and polypropylene alternately arranged. DF-1 (trade name, manufactured by Daiwa Spinning Co., Ltd.).

(Example 1) Acrylic fiber 100% with streaks
A basis weight of 100g / m ² card web of 80kg /
Spun lace processing was performed with water having a pressure of ² cm ² to obtain a nonwoven fabric for cleaning. The nonwoven fabric for washing was soaked in water and rubbed with a little force on a ceramic cup stained with tea astringent, and the tea astringent was wiped clean. The cooking oil on the plate could be easily wiped off in lukewarm water. However, the rice grains adhering to the bowl were crushed by the wiping operation and were difficult to wipe. Water stains on the enamel bathtub and dirt from human body fat were also wiped clean.

(Comparative Examples 1 to 3) A nonwoven fabric for washing having a basis weight of 100 g / m ² was prepared from the above two kinds of fibers in the same manner as in Example 1, and 100% of ordinary acrylic fibers were used. What used the 100% of composite conjugate fiber was prepared. A commercially available nylon scourer and a commercially available non-woven Sherelia (trade name, manufactured by Asahi Kasei Corporation) non-woven fabric of acrylic fiber, which is easily fibrillated, are spunlaced with 80 kg / m ² pressure water to prepare fibrillated fibers. When the tea astringent of the same cup as in Example 1 was wiped off, the following results were obtained. ◎ for those that could be wiped well, ○ for those that could be wiped slightly
Those that could be wiped slightly are indicated by △. Normal acrylic fiber △ Slightly removed. Dirt was observed on the cleaning nonwoven fabric. Dividable conjugate fiber ○ Slightly wiped off. Nylon scrubber △ Slightly removed. A linear flaw was found in the tea astringency. Fibrillated acrylic nonwoven fabric ○ Slightly wiped off.

[0023] Next was basis weight 100 g / m ² and 50 g / m and then this ^second card web needle punched to each knee pan web 1 with the muscle with acrylic fiber. Also, a blended weight of 50 g / m ² and 1% of 43% by weight of the above-mentioned acrylic fiber with streaks and 57% by weight of the above-mentioned high shrinkable fiber
A card web of 00 g / m ^{2 was} prepared and needle punched into kneaded webs 3 and 4, respectively.

Example 2 The above-mentioned knee pan webs 1 and 4 were overlapped and integrated by needle punching, followed by spunlace processing to obtain a nonwoven fabric having a thickness of about 2 mm. Next, this was subjected to a heat treatment at 140 ° C. for 1 minute using a hot air penetration type thermal processing machine to shrink the highly shrinkable fibers. As a result, a large number of irregularities were formed on the surface of the knee pan web 1, and the basis weight was 550 g / m ² . It became a nonwoven fabric for cleaning a wrinkled nonwoven fabric. When the tea astringency of the same cup as in Example 1 was wiped in the same manner with this nonwoven fabric for cleaning, the cup could be wiped clean. The cooking oil on the plate could be easily wiped off in lukewarm water. Water stains on the enamel bathtub and dirt from human body fat could be wiped clean. The rice grains adhering to the bowl could also be wiped cleanly on the wrinkled surface.

Example 3 The above-mentioned knee pan webs 2 and 4 were overlapped to obtain a nonwoven fabric for washing a multi-wrinkled nonwoven fabric having a basis weight of 500 g / m ^{2 in} the same manner as in Example 2. The wrinkles were finer than those in Example 2. With this non-woven fabric for washing, the tea astringency of the cup and the stain of the bath tub were wiped in the same manner as in Example 1, and it could be wiped clean. The cooking oil on the plate could be easily wiped off in lukewarm water. Using the wrinkled surface, the rice grains in the bowl could be wiped clean.

Example 4 The above-mentioned knee pan webs 1 and 3 were overlapped to obtain a nonwoven fabric for washing a multi-wrinkled nonwoven fabric having a basis weight of 250 g / m ^{2 in} the same manner as in Example 2. The wrinkles were larger than those in Example 2. Example 1
When the tea cup of the same cup and the dirt of the bathtub were wiped in the same manner, it was able to wipe off neatly. The cooking oil on the plate could be easily wiped off in lukewarm water. Using the wrinkled surface, the rice grains in the bowl could be wiped clean.

(Example 5) The above-mentioned acrylic fiber with streak was
A card web having a basis weight of 40 g / m ² was prepared by mixing 0% by weight of the high-shrinkable fiber with 30% by weight of the high-shrinkable fiber.
/ M ² by pressurizing water to form a non-woven fabric by entanglement of the fibers. Next, 1
Heat treatment was performed at 40 ° C. for 1 minute to obtain a nonwoven fabric for washing a multi-wrinkled nonwoven fabric having a basis weight of 100 g / m ² . The water-repelling windshield was now sprayed and the body was rubbed firmly with water.

[0028]

The cleaning non-woven fabric of the present invention can wipe off water stains, oil stains, stains, etc. which are firmly adhered to tableware, kitchen appliances, bathtubs, glass surfaces, metals, painted surfaces, etc. with water. Can be. Strong oil stains can be wiped off more easily than conventional wipers by using hot water or a small amount of detergent.

Claims (3)

[Claims] 1. A fiber having a large number of streak-shaped recesses on the fiber surface in the length direction of the fiber, 50% or more of streaked acrylic fiber having a fineness of 0.3 to 2.0 denier, and having a fineness of 2.0 denier or less. A fiber group consisting of acrylic fibers of at least 70
A nonwoven fabric for cleaning having a basis weight of 30 to 700 g / m ² , in which fibers of a fiber assembly containing 10% by weight are entangled and integrated. 2. A first fiber layer containing at least 80% by weight of the A fiber group, and 30 to 70% by weight of the A fiber group, and 30 to 70% of the high shrinkable fiber having a maximum heat shrinkage of 50% or more by heating.
A second fiber layer composed of 60% by weight is laminated, the weight ratio of the first fiber layer and the second fiber layer is 2: 1 to 1: 2, and both fiber layers are integrated by fiber entanglement; The nonwoven fabric for cleaning according to claim 1, wherein a large number of wrinkle-like irregularities are formed on the surface of one fiber layer. 3. The cleaning fiber according to claim 1, wherein the creasing acrylic fiber has a substantially circular cross section, and has three or more streaky recesses having a length of 5 μm or more per 10 μm of perimeter in the longitudinal direction of the fiber. Non-woven fabric.