JPH02191422A - Disposable dustcloth - Google Patents

Abstract

PURPOSE:To obtain a sheet of disposable dustcloth which is suitable for both wet and dry types and has excellent dust absorbing and holding capacities, by a method wherein a sheet of non-woven fabric is formed by connecting crimped long fibers each other, and cut into an adequate size and shape. CONSTITUTION:A crystalline thermoplastic fibers, for example, polyolefine fibers, polyester fibers, or polyamide fibers, are used solely or in combination as crimped filaments, and hydrophilic fibers are suitable for exclusive use as wet type. Part of crimped filaments cross points of non-woven fabric of which dustcloth is made are adhered at a ratio that is influenced by the manufacturing conditions. Thermal fusion by which fibers are melted and adhered each other is preferable as the adhering method because a bulky and soft feeling is kept and dust absorbing capacity is improved. As the fibers are partially adhered each other, the surface area of the dustcloth is expanded and the dust absorbing and holding capacities can be mutually increased.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a non-woven dust cloth for wiping dust, that is, a conventional cloth used for removing dust from kitchens, furniture, machinery, etc. Regarding disposable dust cloths that can replace rags, rags, etc.

[Conventional technology]

Special woven fabrics, paper, and non-woven fabrics are being developed as dust cloths such as dish towels, rags, and rags.

Conventionally, such dust cloths have mainly been made from woven fabrics made from waste materials. However, as it has become difficult to maintain a stable supply of waste textiles, various types of textile dust cloths have been created in response to the demand for easy-to-use dust cloths that are suitable for cleaning objects. In order to ensure water absorption or water retention through knitted fabric dust cloth, the tissue fabric must have a multi-layered and complex structure, and fabrics that provide a soft feel tend to lose thread waste and fuzz. In order to provide a dust cloth made of woven fabric that has a soft feel and has water absorption and water retention ability, limited selection is required in both the mm used and the weaving method, making it expensive and unsuitable as a disposable dust cloth.

Although paper dust cloth has excellent water absorbency, it is weak against water and easily tears, making it unsuitable as a wet dust cloth intended for submerged use.In addition, the range of use is limited due to paper dust generated from the pulp, and it is susceptible to dust. Although it has the same removal power, it is inferior to other dust cloths in terms of dust suction power.

Non-woven dust cloths made from short fiber non-woven fabrics are commercially available. Although short fiber nonwoven dust cloth has good water absorption, it has the disadvantage of being weak against water and easily tearing when used as a wet dust cloth. Furthermore, since the fibers tend to fall off, it is not particularly suitable for cleaning machinery and equipment.

[Problem to be solved by the invention]

The object of the present invention is to be suitable for both wet and dry use, without tearing even when submerged in water and squeezed, and without fibers falling off even when used dry, and having a soft feeling of use, while also being suitable for both wet and dry use. The purpose of the present invention is to provide a disposable dust cloth that exhibits dust adsorption and dust holding power that are not found in other disposable dust cloths.

[Means to solve the problem]

A disposable dust cloth according to the present invention to solve the above problems is characterized in that it is formed by cutting a nonwoven fabric formed by substantially mutually bonding crimped long fibers into an appropriate size and shape. be.

The crimped long fibers used in the present invention include crystalline thermoplastic fibers, such as polyolefin fibers such as polypropylene fibers, polyester fibers such as polyethylene terephthalate fibers, and polyamide fibers such as nylon 6 or nylon 66, either singly or in combination. I can list things. Further, these fibers may be used as composite fibers.

Note that hydrophilic fibers are suitable for dust cloths designed for wet use.

In addition, it is preferable that the crimped long fibers of the present invention be formed as continuous filaments having spiral crimps in order to improve the uniform bulk of the cross surface, softness, and dust absorption and retention ability, but this is not always necessary. It is not limited to spiral continuous filaments. The number of crimps is preferably 2 to 30/25 mm, and the crimp spiral diameter is preferably 1.0 to 0.3 mm. If the crimped helix diameter exceeds 1.0+ nm, the number of crimps per unit length will be small, resulting in poor bulkiness, or 0.3 nm.
If it is less than mm, the space obtained by the spiral shape becomes extremely small, resulting in poor bulkiness, and the entanglement between filaments becomes too strong, resulting in a lack of softness of the dust cloth. Furthermore, it is more preferable that the filament has one or more twists within a length of the filament, for example 15 mm.

Furthermore, in the long fibers of the present invention, it is preferable that the cross section of the yarn is not a normal round shape, but is formed into a special shape that is modified from this. This deformed or irregular shape may be any shape as long as it has a convex portion or a concave portion in at least a portion of the cross-sectional shape of the thread.

In the nonwoven fabric constituting the disposable dust cloth of the present invention, crimped long fibers are substantially bonded to each other. "Substantially mutually bonded" here does not mean that all the intersection points of the plurality of filaments that make up the nonwoven fabric are bonded, but that some of the intersection points are bonded at a rate that depends on the manufacturing conditions. Indicates that the

As a joining method, a method using an adhesive, a heat fusion method using a composite fiber having a heat fusion component, or a partial thermocompression bonding method using an embossed member can be used. In order to maintain bulky and soft texture and increase dust absorption and retention ability, it is preferable to use a heat fusion method in which the fibers themselves are bonded together, and it is more preferable to use a partial thermocompression bonding method.

The disposable dust cloth of the present invention has a width of 10 cm to 40 cm.
It may be formed into a roll shape with perforations at appropriate intervals, or it may be cut into rectangles of 15 cm to 40 cm, folded for easy removal, and stored in a box.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the disposable dust cloth of the present invention will be described with reference to the accompanying drawings.

Polypropylene was melt-extruded from a spinneret having irregularly shaped nozzles to form long fibers having irregularly shaped cross sections.

At this time, the yarn was cooled from the side by a cooling device in the vicinity of the spinneret, and was pulled out by a pulling device such as an air sucker to form a spiral crimp. The yarn that came out of the traction device was passed through a charging device to open it, and was collected and conveyed as a web on a moving wire mesh conveyor by the spunbond method. Next, the transported web was thermally bonded using a partial thermocompression roll to bond the fibers to each other to form a nonwoven fabric. A perforation was inserted into the nonwoven fabric thus formed, and the fabric was cut diagonally along the perforations into pieces 22 cm wide and 20 m long, and wound around a mandrel as shown in Figure 1 to form a roll of dust cloth (A>).

In the above-mentioned dust cloth, in order to form bulky and soft crimped fibers, it is preferable to use a thermoplastic resin such as polypropylene, polyester, polyamide, polyethylene, etc., especially a crystalline thermoplastic resin. The number of crimps in the above fiber is one per 10 mm of fiber length, and the diameter of the helical crimp is 0.7 mm.
And so. As mentioned above, the number of crimps is 2 to 30/25 II
llII is preferable, and the crimp form may be buckled or spiral, but the spiral form is preferable in order to increase the bulkiness of the dust cloth.

The crimped yarn may be physically formed by an asymmetric cooling method in which the yarn is cooled non-uniformly during fiber production, or it may be formed systematically by utilizing the bimetallic effect of composite fibers. In this case, it is especially important to use threads with irregular cross sections.
Desirable for increasing the adhesion of the cloth.

In the present invention, it is desirable that the fibers used have an irregular cross-sectional shape having convex portions or concave portions. When the irregular cross-section thread is used for wiping, the convex part of the thread comes into contact with the cleaning surface at an acute angle, which increases the rubbing force of the dust cloth and improves the dust adsorption power.

The irregular cross-section yarn can be formed by using an irregular nozzle in the spinneret.

The irregular shaped nozzle to be used may be of any shape as long as it has a narrow slit, but the width of the slit is 0.0
6 to 0.20+nm, and the arm length of the slit is 0
．． For example, filaments with a cross-sectional shape as shown in FIG. 3 can be obtained by using an irregularly shaped nozzle with a size of 3 to 1.0 mm, and the filaments constituting the nonwoven fabric can stably contain 2 to 30 filaments/251111! This is more preferable because it can provide a crimp number of l.

The above-mentioned partial thermocompression bonding can be performed by pressing a flat plate other than an engraved roll. In terms of production, the roll method is preferred. A combination in which one is an engraving roll and the other is a smooth metal roll, or a method in which both the upper and lower engraving rolls are butted together is adopted. The degree of thermocompression bonding is determined by setting the temperature and contact pressure of the upper and lower rolls according to the required performance such as strength or fluffiness of the resulting nonwoven fabric, but the texture temperature is set below the melting point of the fiber used. It is preferable to do so. In the present invention, the embossed pattern of the engraving is optional, but in order to prevent fibers from falling off and maintain appropriate strength and softness required for dust cloth, the area ratio of thermocompression bonding should be in the range of 2 to 30%. Practical, preferably 5-15%, the spacing of embossed carvings depends on the pattern,
The depth of the emboss engraving is 0.5 mm or more, preferably 1.0 mm or more, and is an important factor to take advantage of the bulkiness of the filament due to crimping. Although the thickness of the cloth is affected, it is preferably 0.5111 m or more in order to take advantage of the characteristics of the crimped filament. FIG. 5 shows an example of an embossed pattern. In the figure, t may be selected as appropriate depending on each work. In addition, the fabric weight of the above nonwoven fabric is 1 (1-150
g/m', preferably 20 to 40 g/m', the object of the present invention can be achieved.

As another embodiment of the present invention, the form of the dust cloth is
15 to 40 for cleaning household furniture as shown in Figure 2.
Cut multiple pieces into cm square or rectangular pieces)
(B) may be one stored in a box. Furthermore,
A dust cloth for wet use can be impregnated with a surfactant and vacuum-backed, or a dust cloth can be impregnated with an oil-soluble cloth for use as an oil-soluble dust cloth for ventilation fans, etc.

Since it is made of a nonwoven fabric made of long fibers, it has excellent ability to attract and retain dust between the fibers, whereas conventional dust cloths simply wipe or wipe away dust. In addition, since the fibers are partially bonded to each other, the surface area of the dust cloth is effectively expanded, thereby synergistically increasing the dust adsorption and retention power. Furthermore, since the long fibers of the disposable dust cloth of the present invention are partially bonded, the cloth strength is stronger than that of short fiber dust cloths, and it is not only applicable to wet dust cloths, but also has less fiber shedding, soft texture, and bulkiness. This makes it ideal as a dry dust cloth.

[Brief explanation of the drawing]

FIG. 1 shows a disposable dust cloth of the present invention formed into a roll and hung. FIG. 2 is a diagram showing a plurality of layers of the dust cloth of the present invention stacked together and stored in a box. FIGS. 3(a) to 3(f) show examples of irregular cross-sectional shapes of long wt fibers of the present invention. FIGS. 4(1) to 4(6) are examples of embossed patterns to show examples of bonding states of long fibers of the present invention. (a) (b) (c) Figure

Claims (1)

[Claims] A disposable dust cloth characterized in that it is formed from a nonwoven fabric made of crimped long fibers substantially bonded to each other.