JP2000245670A - Sheet for cleaning and manufacture therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet for cleaning provided with a brush with an excellent capturing property and retaining property of various dust. SOLUTION: In this sheet 1 for cleaning provided with many brushes on at least one of the surfaces of a base material sheet, the brushes of different lengths are made to coexist. In this manufacturing method of the sheet 1 for cleaning provided with a process for joining long fiber filaments 7 on the surface of the base material sheet by intermittent joining lines 5 in the flowing direction of the fibers and the process for cutting the long fiber filaments between the joining lines 5 by a cutting line 6, by providing the cutting line 6 on a part other than a center line between the joining lines 5, not fixing the interval of the joining lines 5 or making the cutting line not parallel to the joining lines 5, the sheet for cleaning is manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning sheet having a number of brushes on a sheet surface. More specifically, the present invention relates to a cleaning sheet having a large number of brushes on the sheet surface, in which brushes having different lengths are mixed to add and improve various dust-collecting and holding properties. For sheet.

[0002]

2. Description of the Related Art Conventionally, there has been known a cleaning sheet using a nonwoven fabric which is attached to a cleaning tool similar to a cleaning mop or the like. These can be used very easily for business use and home use and can be disposable, so that they are widely marketed. For example, JP-A-9-14
No. 9873 discloses a disposable wiping tool in which a brush-like portion is provided at least on one side of a base sheet.

[0003] However, the wiping tool described in the same publication having a brush-like portion in the form of a base sheet is capable of adsorbing dust on the brush-like portion and capturing the dust, but the overall brush length is reduced. Since they are almost the same, there are still improvements that make it easier to wipe off the dirt depending on the sheet, and that if the floor is cleaned by attaching it to a wiping tool for flooring, the outer periphery is likely to get dirty before the center of the sheet gets dirty. Was. Specifically, a cleaning sheet having a brush with a relatively short brushed length is excellent in a function of sweeping and collecting dust and entanglement and a wiping function of scraping dirt in a groove, but is thinner as a sheet. For this reason, there is room for improvement in the function of taking the wiped thing into the brush and holding it, or entanglement of relatively large dust. On the other hand, the cleaning sheet having a brush with a relatively long brushed length exhibits excellent functions in terms of softness coming from the thickness of the sheet and dust-removing properties of deep grooves,
Since dirt hardly penetrates into the interior of the brush, only the sheet surface is soiled, the efficiency of the sheet is poor, and there is still room for improvement in the overall wiping function. As described above, according to the type of dirt or dust, it is necessary to use cleaning sheets having various brushed lengths or to change cleaning tools, which requires labor and cost.

[0004]

In order to solve the above-mentioned problems of the prior art, the present invention uses a single cleaning sheet to collect, entangle and scrape all kinds of dust and dirt. It is an object of the present invention to provide a cleaning sheet capable of being taken in and a method for manufacturing the same.

[0005]

Means for Solving the Problems As a result of intensive studies, the present inventors have made it possible to scrape, entangle, and remove all kinds of dust and dirt by making the length of the brush longer or shorter.
The present inventors have found that a cleaning sheet that can be scraped out and taken in can be obtained, and the present invention has been completed. Further, in the cleaning sheet manufacturing method, after the long fiber filaments are joined on the surface of the base sheet by intermittent joining lines in the flow direction of the fibers, the long fiber filaments are placed at positions other than the center line between the joining lines. The present inventors have found that the cleaning sheet can be manufactured by a method such as cutting fiber filaments, and completed the present invention.

That is, the present invention relates to a cleaning sheet having a large number of brushes on at least one surface of a substrate sheet, wherein brushes having different lengths are mixed; 10mm short brush and 7-30mm
Cleaning brush, wherein a difference between the lengths of the two brushes is 4 mm or more; cleaning sheet, comprising an oil agent; base sheet surface In the method of manufacturing a cleaning sheet including a step of joining long fiber filaments on the basis of intermittent joining lines in the flow direction of the fibers and a step of cutting the long fiber filaments along the cutting lines between the joining lines, A method for manufacturing a cleaning sheet, wherein brushes having different lengths are mixed by providing the cutting line at a position other than the center line between joining lines; A method of manufacturing a cleaning sheet including a step of joining by a joining line intermittent in a direction and a step of cutting the long fiber filament by a cutting line between the joining lines; A method for producing a cleaning sheet, characterized in that brushes having different lengths are mixed by making the distance not constant; and that a long fiber filament is intermittently joined on a surface of a base sheet in a flow direction of the fiber. And a method of manufacturing a cleaning sheet including a step of cutting the long fiber filaments between the joining lines by a cutting line, wherein the cutting line is made non-parallel to the joining line to obtain a length. Is a method for producing a cleaning sheet, wherein different brushes are mixed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cleaning sheet and a method of manufacturing the same according to the present invention will be described with reference to the accompanying drawings. 1 to 5 show plan views of the cleaning sheet of the present invention. 6 to 10 are partial cross-sectional views of the cleaning sheet of FIGS. 1 to 5, respectively. As shown in these drawings, in the cleaning sheet 1 of the present invention, the brushes 3, 3 ′ are fixed on the base sheet 2 at the joining lines 5. Brush 3, 3 '
Is provided by cutting the long fiber filament 7 along the cutting line 6 between the joining lines 5. The brushes 3 and 3 ′ may be provided only on one surface of the base sheet 2, or may be provided on both sides of the base sheet.

The intervals between the joining lines 5 may be substantially constant as shown in FIGS. 1, 2 and 5, or may be longer or shorter as shown in FIGS. As shown in FIG. 1 and FIG.
In the case where the distance between the lines is substantially constant, the length of the brush can be made longer or shorter by shifting the position of the cutting line 6 from the center between the joining lines 5 (partial cross sections shown in FIGS. 6 and 7). See figure). In FIG. 5, by providing a cutting line 6 that is not parallel to the joining line 5 between the joining lines 5 whose intervals are substantially constant, the length of the brush can be made longer or shorter. Further, in the cleaning sheet of FIG. 5, long and short brushes are mixed not only in the length direction of the long fiber filament but also in the direction perpendicular thereto (see the partial sectional view shown in FIG. 10). Also, as shown in FIGS. 3 and 4, when there is a difference in the interval between the joining lines 5, the position of the cutting line 6 is provided at the center between the joining lines 5 so that the length of the brush has a length. be able to. In FIG. 3, by providing a short brush 3 ′ at the peripheral portion of the cleaning sheet 1 and providing a long brush 3 at the central portion, the central portion can be used effectively similarly to the peripheral portion.

The interval between the joining lines 5 is about 5 to 60 mm.
It is preferred that If it is less than 5 mm, the length of the brush is short, and the capturing and retaining properties of dust are inferior. On the other hand, if it exceeds 60 mm, the length of the brush is too long, and the hair falls asleep, and the function of the brush cannot be sufficiently performed. The interval between the joining lines 5 is
It is not limited depending on the method of cutting the long fiber filament. The shape of the joining line 5 is not particularly limited as long as it extends in a direction crossing the flow direction of the long fiber filament, and may be other than the shapes shown in FIGS.

For the joining, it is preferable to use a welding means such as a heat welding seal or an ultrasonic welding seal, and particularly, a heat welding seal is preferable. Further, the fibers can be fixed by an adhesive, sewing, or the like.

In the present invention, in order to manufacture cleaning sheets in which brushes of different lengths are mixed, 1) cutting line 6
Is shifted from the center of the interval between the joining lines 5 (FIGS. 1 and 2), 2) As described above, the method is not constant in the interval between the joining lines 5 (FIGS. 3 and 4), and 3) The joining line 5 and cutting line 6
Are made non-parallel to each other (FIG. 5). According to these methods, the cleaning sheet of the present invention can be easily manufactured.

The length of the brush 3 is 3 to 10 for the short brush 3 '.
mm and the length of the long brush 3 is preferably about 7 to 30 mm, and the difference between them is preferably 4 mm or more. Due to this combination of lengths, the shorter brush
Due to the rigidity, a three-dimensional structure is generated, and it is possible to scrape dust and the like in the joints and lightly catch dust such as breadcrumbs and hair, and perform an auxiliary function until a long nap is entangled. In addition, the longer brush can entangle trash that is easily entangled with brush fibers, such as cotton dust, or wrap large garbage so as to catch the trash. These effects cannot be obtained only with a short brush or a long brush alone, and are exhibited only by having both. These brushes may be used after being raised, but may be used without being raised. For example, after cutting between the joining lines 5, only one may be used and the other may be used without raising. In this case, it is preferable that the longer brush portion is raised.

The base sheet 1 of the cleaning sheet according to the present invention comprises:
Although not particularly limited, in the case of a floor cleaning sheet using a tool such as a mop, the length of the long fiber filament in the flow direction is approximately 25 to 80 cm, and the length in the lateral direction is approximately 20 to 30 cm. Is preferred.

The substrate sheet 2 used in the cleaning sheet 1 of the present invention is not particularly limited, but any material having a strength that can be used, such as a nonwoven fabric, a resin film, or a cloth containing synthetic fibers, may be used. Such a thing can also be used.
Among them, a spunbonded nonwoven fabric made of a composite fiber of polyethylene and polyester is preferable in terms of strength.

The long fiber filament 7 used for manufacturing the cleaning sheet 1 of the present invention is not particularly limited, but is generally made of polyethylene, polypropylene, nylon, polyester, rayon, or the like. Fiber bundles are used. Among them, it is preferable to use a fiber composed of a composite fiber of polyethylene and polyester. Further, it is preferable that the long fiber filament 7 has a crimp. The crimping can be performed by mechanical crimping, thermal crimping, or the like.
Various types from three-dimensional ones to three-dimensional ones can be used.
When a material having crimps is used, the number of crimps is preferably 5 to 25 crimps per inch (2.54 cm). If the number of crimps is less than 5, the function improvement by crimping, that is, the function of wiping off dust and the function of retaining the dusts will be hindered. If the number of crimps exceeds 25, the processing characteristics in the production of the fiber will be deteriorated, and the utility will be poor.

In the cleaning sheet of the present invention, the long fiber filaments 7 are spread, expanded to a width of approximately 100 mm to 200 mm, and then joined to the base sheet 2. The joining is performed by joining the long fiber filaments 7 to the base sheet 2 by a welding line 5 extending in a direction crossing the flow direction of the filaments of the long fiber filaments 7 by welding or other methods. Next, the long fiber filament 7 is cut along the cutting line 6 between the welding lines to form the brushes 3 and 3 '. The method of making the length of the brush longer or shorter is as described above.

In the cleaning sheet 1 of the present invention, when the brush 3 has the crimp 4, the brush is naturally raised only by cutting along the cutting line 6 without providing a step of raising the fluff. However, the raising may be further fluffed by various fluffing steps. In this case, a method of blowing air from the air nozzle to the cleaning sheet, a method of applying a mechanical force to the cleaning sheet, or the like can be used. By making the brushes 3 and 3 'fluffy in this manner, the dust collecting effect can be enhanced, and the aesthetic appearance is also improved.

The cleaning sheet 1 of the present invention is used to improve the ability to catch and retain dust and to improve the finish of the cleaning surface after wiping, such as mineral oil such as paraffin, synthetic oil of polyolefin, and oil such as silicone oil. And a surfactant or the like. Such an oil agent can be contained by a method such as spray coating, transfer coating, or impregnation.

The brushes 3 may be provided on the entire base sheet 2, but as shown in FIGS. 1 to 5, the brushes 3 are provided at both ends in the longitudinal direction of the base sheet 1 or in directions perpendicular thereto.
An area 9 without a brush portion can also be provided. If there is an area 9 where no brush portion is provided, see JP-A-9-14
As shown in FIG. 1 of Japanese Patent No. 9873, by folding this area 9, the cleaning sheet 1 of the present invention can be easily attached to a mop handle or the like. Note that this region 9
In order to improve the strength of the portion, the base sheet 9 can be folded back to be doubled, or another sheet can be overlapped and bonded. Although not shown, a notch or the like may be provided in the area 9 to make it easier to attach and detach the mop to a handle or the like.

[0020]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. (Example 1) Tow of a long fiber filament having a crimp and having a core-sheath structure of polyethylene and polyester (denier per filament is 3 deniers, total of 75,0
(00 denier) and spread to a width of about 130 mm, and then joined to a spunbonded nonwoven fabric made of polyethylene and polyester (weighing 20 g / m ² , 210 mm width). Joining is performed by heat welding and extends in a direction crossing the fiber direction of the long fiber filament by 20 mm.
, And a long fiber filament was cut between the joining lines to form a brush. During the cutting, the brush was cut off from the center line of the joining line so that the length of the brush became 5 mm and 15 mm. A sheet having a brush-like portion formed in this way is about 300 m
The sheet was cut to a length of m to produce a cleaning sheet.

(Comparative Example 1) The procedure of Example 1 was repeated, except that the interval between the joining lines was set to a constant interval of 10 mm, the cutting line was provided at the center of the joining line, and the length of the raised hair was only 5 mm. A cleaning sheet was manufactured.

Comparative Example 2 The procedure of Example 1 was repeated, except that the interval between the joining lines was 30 mm, the cutting line was provided at the center of the joining line, and the length of the naps was only 15 mm. A cleaning sheet was manufactured.

Comparative Example 3 Short polyester fiber (1.5
(Denier, 51 mm), a cleaning sheet was manufactured from a spunlace nonwoven fabric (weighing 50 g / m ² ) made relatively coarsely.

(Test Example 1) Dust wiping properties, bread crumb wiping properties, hair wiping properties, hair preserving properties, and groove dirt removing properties of each cleaning sheet produced in Example 1 and Comparative Examples 1 to 3 (Large grooves such as sills, small grooves such as flooring, etc.), dirtiness and brushed appearance at the center of the sheet were evaluated based on the following evaluation methods.

(Dust wiping property) JI as dust for evaluation
After spraying 1.5g of 7 kinds of S test dust (Kanto loam, fine granules) on the test flooring, attach the laminated sheet to the cleaning holder and wipe it off, and evaluate based on the following four-step evaluation criteria. Done. ◎: Very good wiping property was shown. ：: Excellent wiping property was shown. Δ: The amount that can be wiped is small, but it can be used. ×: hardly wiped off, lacking practicality

(Bread crumb wiping property) As bread crumbs for evaluation, 0.5 g of commercially available bread crumbs (1-2 mm) was sprayed on a test flooring, and the laminated sheet was attached to a cleaning holder and wiped off. The evaluation was performed using the above-described four-grade evaluation criteria of the dust wiping property.

(Wipeability of hair) As test hair, 10 test human hairs (15 to 20 cm) were sprayed on a test flooring, and the laminated sheet was attached to a cleaning holder and wiped off, and the above-described dust wiping was performed. The evaluation was performed using four-step evaluation criteria.

(Dust Retention) After wiping off the three kinds of test dust shown in the wiping test method, the sheet is lightly shaken to shake off the dust, and the state of the dropped dust and the dust remaining on the sheet is observed. The evaluation was performed using the evaluation criteria in the following three stages. ：: Almost remained on the sheet, showing excellent retention. Δ: There is some dust that falls, but it can be used. X: A considerable amount was shaken off and lacked practicality.

(Groove wiping property) Dust in the above-described dust wiping property test was scattered in a groove having a width of 3 mm and a depth of 3 mm, and the groove was observed after wiping with a sample. Evaluation was performed using criteria. The evaluation was performed for a large groove such as a threshold and a small groove such as a flooring. ：: Most of the dust in the groove was wiped off. Δ: Some dust residue was observed, but almost wiped off. X: A considerable amount of dust remained in the groove.

(Stainability at the center of the sheet) In the same manner as in the above-described dust wiping test, when the cleaning sheet was reciprocated about 10 times on the flooring, the stain state of the sheet was observed several times on the way. Evaluation was performed using three-level evaluation criteria. ：: The entire sheet was relatively uniformly stained. Δ: The center was shifted and soiled. X: Only outer periphery is stained.

(Brushing Appearance) Ten prototype samples were shown, and the appearance was evaluated using the following three-level evaluation criteria from the viewpoint of dust wiping performance, and the item with the most opinion was evaluated as the brushing appearance. . ○: It seems that trash can be wiped out as it is seen. Δ: I do not know whether I can remove trash. X: It is unlikely that garbage will be removed. Table 1 shows the results of these evaluations.

[0032]

Table 1--------------------------------------------------------------------Example --------------------------------------------------------------------------- 11 12 3 --------------------------------- --------------Brushed length (mm) 5 and 15 5 only 15-crimped Yes Yes-Number of crimps (mountain / inch) 15 15 15----- −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− Dust wiping property ○ ○ ○ △ Bread wiping property ◎ ◎ △ × Hair wiping property ○ ○ △ × Dust retention ○ ○ ○ △ Dust removal in large grooves ○ △ ○ × Dust removal in small grooves ○ ○ △ × Stain at the center of sheet ○ △ △ △ Brushed appearance ○ ○ △ − −−− −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

As is clear from the results shown in Table 1,
In the cleaning sheet of Example 1, excellent results were obtained in all of the evaluation items. However, Comparative Examples 1 and 2 in which the brushed length was constant and Comparative Example 3 having no brush-like portion had the same results as in Example 1. 1
The evaluation was lower than that of.

[0034]

According to the present invention, there is provided a cleaning sheet which is excellent in trapping and retaining properties of various kinds of dust and has a good appearance. Further, according to the present invention, there is provided a manufacturing method capable of easily manufacturing the cleaning sheet.

[Brief description of the drawings]

FIG. 1 is a plan view showing a cleaning sheet of the present invention.

FIG. 2 is a plan view showing a cleaning sheet of the present invention.

FIG. 3 is a plan view showing a cleaning sheet of the present invention.

FIG. 4 is a plan view showing a cleaning sheet of the present invention.

FIG. 5 is a plan view showing a cleaning sheet of the present invention.

FIG. 6 is a partial cross-sectional view of the cleaning sheet of FIG. 1 along A-A '.

FIG. 7 is a partial cross-sectional view of the cleaning sheet of FIG. 2 along BB ′.

FIG. 8 is a partial cross-sectional view of the cleaning sheet of FIG. 3 along C-C '.

9 is a partial cross-sectional view of the cleaning sheet of FIG. 4 taken along line D-D '.

10A is a partial cross-sectional view of the cleaning sheet of FIG. 5 along EE ′, and FIG. 10B is a partial cross-sectional view of the cleaning sheet of FIG. 5 along FF ′. is there.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cleaning sheet 2 Base sheet 3, 3 'brush 3a, 3a' brush 3b, 3b 'brush 3c, 3c' brush 3d, 3d 'brush 3e, 3e' brush 5 Bonding line 6 Cutting line 7 Long fiber filament 9 area

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Masatoshi Fujiwara 1531-7, Wadahama Takasuka, Toyohama-cho, Mitoyo-gun, Kagawa Prefecture F-term in Unicharm Corporation Technical Center 3B074 AA02 AA08 AB01 AC03

Claims (6)

[Claims] 1. A cleaning sheet having a plurality of brushes on at least one surface of a base sheet, wherein brushes having different lengths are mixed. 2. Short brush of 3 to 10 mm and 7 to 30 mm
2. The cleaning sheet according to claim 1, wherein a long brush having a long length is mixed, and a difference in length between the two brushes is 4 mm or more. 3. The cleaning sheet according to claim 1, further comprising an oil agent. 4. A step of joining long fiber filaments on the surface of a base sheet by intermittent joining lines in the flow direction of the fibers, and a step of cutting said long fiber filaments by cutting lines between the joining lines. A method for manufacturing a cleaning sheet, comprising: providing brushes having different lengths by providing the cutting line at a position other than the center line between joining lines. 5. A step of joining long fiber filaments on the surface of a base material sheet by intermittent joining lines in a flow direction of the fibers, and a step of cutting the long fiber filaments by cutting lines between the joining lines. A method for manufacturing a cleaning sheet, comprising: providing brushes having different lengths by mixing intervals of the joining lines, so that brushes having different lengths are mixed. 6. A step of joining long fiber filaments on the surface of a base material sheet by intermittent joining lines in a flow direction of the fibers, and a step of cutting the long fiber filaments by cutting lines between the joining lines. A method for manufacturing a cleaning sheet, comprising: making the cutting line non-parallel to the joining line to mix brushes having different lengths.