JP2993672B2 - Disposable dust cloth - Google Patents

Description

The present invention relates to a nonwoven cloth cloth for wiping dust, that is, a conventional cloth used for removing dust from kitchens, furniture, machinery and the like. It relates to disposable dust cloths that can replace rags and rags.

[Conventional technology]

Specialized woven fabrics, papers and non-woven fabrics are being developed as dust cloths for cloths, rags, rags and the like.

Conventionally, a woven fabric utilizing waste has been mainly used for such dust cloth. However, it has become difficult to provide a stable supply of discarded woven fabrics, and in response to the demand for easy-to-use dust cloths suitable for objects to be cleaned, various woven cloth dust cloths have been born. In order to ensure water absorption or water retention with the woven cloth dust cloth, the woven cloth must be composed of multiple layers and a complicated structure, and those that provide a soft feeling of use are easy to disperse lint, suppress feather scattering, In order to provide a textile cloth made of a woven fabric having a soft feeling of use and having water absorption and water retention properties, a limited selection of both fibers and a weaving method is required, so that it is expensive and is not suitable as a disposable dust cloth.

Paper dust cloth is excellent in water absorption, but it is easily broken due to its weakness in wetness.
It is unsuitable as a cloth, and its use is narrow due to paper dust generated from pulp.

A non-woven dust cloth using short-fiber non-woven fabric is commercially available. Short-fiber nonwoven dust cloth has good water absorbency, but has the disadvantage that it is easily damaged by water when it is used as a wet dust cloth. Further, since the fibers are apt to fall off, it is not particularly suitable for cleaning machinery and the like.

[Problems to be solved by the invention]

The problem of the present invention is that it does not break even when squeezed by water and does not fall off even when used in a dry state, it is optimal for both wet and dry types, has a soft feeling of use, and An object of the present invention is to provide a disposable dust cloth which exhibits a dust absorbing power and a dust retaining power not found in a disposable dust cloth.

[Means for solving the problem]

The disposable dust cloth according to the present invention for solving the above problems has a fineness of 0.5 to 5.0 denier, has a deformed cross section having a concave portion or a convex portion at least in part, and has a number of crimps of 2 to 30/25 cm. And the spiral diameter is 1.0-0.3m
The filament is characterized by being formed of a nonwoven fabric formed by bonding continuous filament long fibers having a substantially spiral crimp of m to each other by a spun bond method.

As the crimped long fiber used in the present invention, a crystalline thermoplastic fiber, for example, a polyolefin fiber such as a polypropylene fiber, a polyester fiber such as a polyethylene terephthalate fiber, or a polyamide fiber such as nylon 6 or nylon 66 is used alone or as a mixture. Things can be mentioned. Further, these fibers may be used as composite fibers.
In the case of a wet-only dust cloth, hydrophilic fibers are suitable.

Further, the crimped long fiber of the present invention is preferably formed as a continuous filament having a helical crimp in order to increase the uniform bulkiness of the cross face, the softness and the dust-absorbing holding power, but it is not essential. It is not limited to a helical continuous filament. The number of crimps is preferably 2 to 30/25 mm, and the crimped helical diameter is preferably 1.0 to 0.3 mm. Crimp spiral diameter
If it exceeds 1.0 mm, the number of crimps per unit length is small, so the bulkiness is inferior.If it is less than 0.3 mm, the space obtained by the spiral shape becomes extremely small, so that the bulkiness is inferior. At the same time, the entanglement between the filaments becomes too strong and the dust cloth lacks softness. Furthermore, the filament is the length of the filament
It is more preferable to have one or more twists within 15 mm.

Further, in the long fiber of the present invention, it is preferable that the cross section of the yarn is not an ordinary round shape but a special shape obtained by deforming the same. The deformed or irregular shape may be a shape having at least a part of the convex or concave portion of the yarn cross-sectional shape.

In the nonwoven fabric constituting the disposable dust cloth of the present invention, the crimped long fibers are substantially bonded to each other. The term "substantially bonded to each other" as used herein does not mean that all the intersections of a plurality of filaments constituting the nonwoven fabric are joined, but some intersections are joined at a rate determined by the manufacturing conditions. Indicates that it is.

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. From the viewpoint of maintaining a bulky and soft feeling and increasing the dust-absorbing holding power, a thermal fusion method in which the fibers are joined by themselves is preferable, and a partial thermocompression bonding method is more preferable.

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

〔Example〕

Hereinafter, an 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 a modified nozzle to obtain a long fiber having a modified cross section. At this time, while the yarn was cooled from the side by a cooling device in the vicinity of the spinneret, the yarn was pulled by a pulling and pulling device such as air soccer to form a spiral crimp. The yarn that exited the traction take-off device was passed through a charging device and spread, and this was collected and transported as a web on a moving wire mesh conveyor by a spun bond method. Next, the conveyed web was thermally bonded with a partial thermocompression roll to bond the fibers together to form a nonwoven fabric. The nonwoven fabric thus formed is perforated, and cut diagonally to a width of 22 cm and a length of 20 m.
Rolled dust cloth (A) as shown in the figure.

In the above-mentioned dust cloth, in order to form a bulky and soft crimped fiber, it is preferable to use a thermoplastic resin such as polypropylene, polyester, polyamide and polyethylene, particularly a crystalline thermoplastic resin. The number of crimps of the fiber was one for a fiber length of 10 mm, and the spiral crimp diameter was 0.7 mm.
As described above, the number of crimps is desirably 2 to 30 pieces / 25 mm, and the crimped form may be either a buckled shape or a spiral shape. However, a spiral shape is desirable for increasing the bulkiness of the dust cloth.

The crimped yarn may be physically formed by an asymmetric cooling method in which the yarn is unevenly cooled at the time of fiber production, or may be formed systematically by utilizing the bimetal effect of the composite fiber. In this case, it is particularly desirable to use a modified cross-section yarn in order to enhance the adhesion of the dust cloth.

In the present invention, it is desirable that the fiber used has an irregular cross-sectional shape having a convex portion or a concave portion. In the case of the irregularly shaped yarn, the convex portion of the yarn comes into contact with the cleaning surface at an acute angle when wiping and cleaning, so that the rubbing force of the dust cloth is increased and the dust adsorbing power is improved.

A modified cross-section yarn can be formed by using a modified nozzle for spinning.

The irregular nozzle to be used may have any shape as long as it has a narrow slit, but the slit width is 0.06
0.20.20 mm and a slit having a slit arm length of 0.3 to 1.0 mm can be used to obtain, for example, a filament having a cross-sectional shape as shown in FIG. 3. It is more preferable since the number of crimps of 2 to 30 pieces / 25 mm can be stably provided.

The partial thermocompression bonding can be performed by a method of pressing a flat plate other than the engraved roll. In terms of production, the roll method is preferred. Combining one as an engraving roll and the other as a smooth metal roll, and as an upper and lower engraving roll,
A contact method or the like is adopted. The degree of thermocompression bonding is determined by setting the temperature of the upper and lower rolls and the contact pressure according to the required performance of the obtained nonwoven fabric, such as the strength and fluffing properties. Is preferred. In the present invention, the embossed pattern of the sculpture is optional, but from the viewpoint of preventing the fibers from falling off required for dust cloth and maintaining appropriate strength and softness,
The thermocompression bonding area ratio is practically in the range of 2 to 30%, preferably 5 to 15%, and the interval between embossed engravings depends on the pattern.
5 mm or more, preferably 1.0 mm or more, the depth of the embossed engraving is an important factor that takes advantage of the bulkiness of the filament by crimping, and the deeper the better, the better. Is affected, but 0.5m
m or more is preferable. FIG. 5 shows an example of an emboss pattern. In the figure, t indicates the distance between each emboss.

The fineness of the fiber may be appropriately selected in the range of 0.5 to 5.0 denier according to the use. The basis weight of the nonwoven fabric is 10 to
The object of the present invention can be achieved at 150 g / m ² , preferably 20 to 40 g / m ^{2. As} another embodiment of the present invention, the form of dust cloth is used for cleaning household furniture as shown in FIG. ~ 40
A plurality of pieces cut into a square or a rectangle of cm may be stored in a box as a set (B). Furthermore,
It can be a wet-only dust cloth which is impregnated with a surfactant and vacuum-packed, or an impregnated oil dissolving agent for removing oil from a ventilation fan or the like.

〔The invention's effect〕

Since the disposable dust cloth of the present invention is formed by a nonwoven fabric made of crimped long fibers, the conventional dust cloth merely wipes off or wipes off dust, whereas dust adsorbs between fibers. And it has excellent power to hold dust. In addition, since the fibers are partially bonded, the surface area of the dust cloth is effectively increased, thereby synergistically increasing the dust suction and holding power. Furthermore, since the long fibers are partially bonded to the disposable dust cloth of the present invention, the strength of the cloth is stronger than that of the short fiber dust cloth. Therefore, it is most suitable as a dry dust cloth.

[Brief description of the drawings]

FIG. 1 is a view in which a disposable dust cloth of the present invention is formed in a roll shape and suspended. FIG. 2 is a diagram in which a plurality of dust cloths of the present invention are stacked and stored in a box. 3 (a) to 3 (f) show examples of irregular cross-sectional shapes of the long fiber of the present invention. FIGS. 4 (1) to (6) are examples of emboss patterns for showing examples of the bonding state of the long fibers of the present invention.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-117868 (JP, A) JP-A-1-148862 (JP, A) JP-A-1-192802 (JP, A) JP-B-38 7511 (JP, B1) U.S. Pat. No. 3,528,129 (US, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47L 13/16 D04H 3/00

Claims (1)

(57) [Claims] (1) a fineness of 0.5 to 5.0 denier, a deformed cross section having a concave portion or a convex portion at least in part, a crimp number of 2 to 30/25 cm, and a spiral diameter of 1.0 to 0.3m
A dust cloth formed of a nonwoven fabric formed by bonding continuous filament long fibers having a substantially spiral crimp of m to each other by a spun bond method.