JP7263662B2 - Non-woven wiper packaging - Google Patents

Description

The present invention relates to nonwoven wiper wrappers.

Spunlace nonwoven fabric, which is made by entangling pulp or regenerated cellulose fiber with synthetic fiber nonwoven fabric (hydroentanglement), has higher wet strength than paper and has liquid absorption properties equivalent to paper, and is used in industrial applications and general households. there is In industrial applications, wiper products include perforated roll-shaped products, four-fold products, two-fold products, and the like.

A form similar to that of tissue paper, in which a sheet used in general households can pop up and be used, is one form that is easy for users to use, and its use is expected to increase in the future.

Japanese Patent No. 2533260

There are two types of folding products that can be taken out in a pop-up manner: an inter-folder (I/F) type folding machine and a multi-folder (M/F) type folding machine. When processing a highly rigid sheet, the I/F type folding machine, which is easy to fix, is easier to fold at a desired location.
However, when processing with a multi-folder (M/F) type folding machine with high productivity, the sheet is folded by tension along the folding board, so the sheet with high rigidity is placed in the desired position. Due to misfolding, the sheet bundle spreads and does not fit in a container such as a carton.

In addition, when processed by an M/F type folding machine, the spunlace nonwoven fabric has high rigidity, so it is easy to cause misalignment during folding, and as a result, misalignment occurs in folding. In addition, when cutting the bundle after lamination, it is likely to be cut obliquely or to cause a partial cut failure.

Therefore, the present invention has been devised in view of the above problems, and is capable of improving productivity when processing a nonwoven fabric wiper product, and making it possible to take out the wiper product more easily, to prevent the feel of the product from being removed, to prevent folding misalignment, folding wrinkles, and cut defects. It is an object of the present invention to provide a nonwoven wiper wrapper.

In order to solve the above problems, (1) The nonwoven fabric wiper package of the present invention is a nonwoven fabric that is laminated by a multi-folder type folding machine from spunlace nonwoven fabric sheets, cut into a predetermined size, and stored in a packaging container. In the wiper package, the sheet has a content of pulp or rayon of 60% or more, a basis weight of 45 g/m ² or more and 90 g/m ² or less, and a rigidity in the CD direction of the sheet. is 50.0 mm or less, the MD/CD ratio of the rigidity of the sheet is 1.5 or more, the MD/CD strength ratio of the sheet is a ratio of 1.8 or more and 3.4 or less, and the packaging container The value obtained by dividing the strength in the take-out direction by the basis weight when the sheet is taken out from the sheet by a pop-up method is 0.1 N/25 mm/gsm or more and 0.5 N/25 mm/gsm or less.

(2) In the configuration of (1) above, the sheet to be folded by the multi-folder type folding machine has embossings that are thermally embossed to improve water absorption.
(3) In the configuration of (2) above, the embossed shape has a circular shape including an ellipse, or a polygonal dot shape.

(4) In the configuration of (2) or (3) above, the embossing has a pressing area of 1 mm ² or more and 15 mm ² or less.
(5) In the configuration of any one of (2) to (4) above, the embossing has a pressing portion area ratio of 10% or more and 25% or less in the entire sheet.
(6) In the configuration of any one of (2) to (5) above, the emboss has a gap of 0.5 mm or more, which serves as a non-pressing portion in the CD direction of the pressing portion.

(7) In the configuration of any one of (1) to (6) above, slitting is performed along the length of the laminate in the take-out direction, and the sheets are stacked in the folding section of the multi-folder type folding machine. , alternating folds.
(8) In the configuration of any one of (1) to (7) above, the product of the basis weight of the sheet, the number of plies, and the number of sets is 2,000 or more and 10,000 or less.

SUMMARY OF THE INVENTION An object of the present invention is to provide a nonwoven fabric wiper package that can improve productivity, take out easily, feel good, prevent folding misalignment, creases, and cut defects when processing a nonwoven fabric wiper product. .

It is explanatory drawing of the embossing of the nonwoven fabric wiper package body which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the manufacturing apparatus of the nonwoven fabric which concerns on embodiment of this invention. It is a figure which shows an example of the original fabric inspection machine of embodiment of this invention. FIG. 2 is a diagram showing the configuration of the folding section of the M/F folding machine according to the embodiment of the present invention; It is a figure explaining the cutoff saw concerning the embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.

A spunlace nonwoven fabric wiper package according to an embodiment of the present invention is obtained by laminating spunlace nonwoven fabric sheets with an M/F type folding machine, cutting them into a predetermined size, and storing them in a packaging container.
FIG. 1 is a diagram showing a spunlaced nonwoven fabric sheet according to an embodiment of the present invention.

[Raw material for non-woven fabric sheet]
The nonwoven fabric sheet 257 is a spunlace nonwoven fabric obtained by entangling (hydroentangling) pulp as a cellulose fiber or rayon fiber as a regenerated cellulose fiber with a synthetic fiber nonwoven fabric (spunbond nonwoven fabric). The nonwoven fabric sheet 257 preferably has a pulp or rayon content of 60% or more. If the blending ratio of the heat-fusible fibers exceeds 60%, fusion will occur when the bundle after lamination is cut.

In addition, the nonwoven fabric sheet 257 is a nonwoven fabric sheet formed by a dry spunbond method including single or composite fibers containing materials selected from polypropylene (PP), polyethylene terephthalate (PET) and polyethylene (PE). . The non-woven fabric sheet 257 is formed by entangling natural materials such as rayon and synthetic fibers made of materials such as PP, PET, and PE by a high-pressure water jet using a dry spunlace method. Further, the synthetic fiber may be a single fiber selected from any one of PP, PET, and PE, or may be a composite fiber selected from a plurality of materials.

As for the cellulosic fibers, those based on natural fibers such as pulp and cotton can be employed. For example, when wood pulp is used, NBKPs such as radiata pine, slash pine, southern pine, spruce, and Douglas fir are preferable as wood species, and may be appropriately selected in consideration of fibrillation, yield, and the like. Rayon or the like can be suitably used as the regenerated cellulose fiber.

[Basis Weight]
The basis weight of the nonwoven fabric sheet is preferably 45 g/m ² or more and 90 g/m ² or less.
If the basis weight of the non-woven fabric sheet exceeds 90 g/m ² , the non-woven fabric sheet tends to shift when folded.

[Number of product plies]
In this embodiment, the number of product plies of the spunlace nonwoven fabric wiper is one, but it may be a plurality of plies.

[Embossing]
As shown in FIG. 1, the nonwoven fabric sheet 257 folded by the M/F folding machine may have embossments 258 that are thermally embossed for improved water absorption.
The shape of the embossing 258 is a circle including an ellipse, or a shape in which polygons are arranged in a dot shape, and FIG. 1 shows circular embossings 258 arranged in a dot shape.

The embossing 258 preferably has a pressing area of 1 mm ² /piece or more and 15 mm ² /piece or less by thermal embossing.
The embossed area is obtained by measuring the height difference of the embossed using a shape measuring laser microscope. A shape measuring laser microscope scans a laser light source, which is a point light source, through an objective lens to pixels that divide the XY plane within the observation field into a plurality of pixels, and detects the reflected light of each pixel with a light receiving element. . Then, the objective lens is driven in the height (Z-axis) direction, and the height information and the amount of reflected light are detected with the Z-axis position where the reflected light amount is the highest as the focal point. By repeating scanning in this manner, a light intensity ultra-deep image and an elevation image (information) in which the whole is in focus can be obtained. Since the laser light source is a pinhole confocal optical system, the measurement accuracy is high.
As the shape measuring laser microscope, the product name "One-shot 3D measuring macroscope VR-3100" manufactured by KEYENCE can be used. The product name "VR-H1A" can be used as the observation/measurement/image analysis software for the image of the laser microscope. Measurement conditions are a magnification of 12 times and a visual field area of 24 mm×18 mm. Note that the measurement magnification and the visual field area may be appropriately changed depending on the size of the desired emboss.
The embossed area ratio can be calculated from the measured area, and the embossed portion 258 preferably has an area ratio of 10% or more and 25% or less in the entire sheet.

Moreover, as shown in FIG. 1, the emboss 258 preferably has a gap a of 0.5 mm or more, which is a non-pressing portion in the CD direction of the pressing portion. By setting the gap a to 0.5 mm or more, the folded portion is easily guided by the gap a. The heat embossing may be performed in front of the folding section of a raw fabric inspection/slitting machine or an M/F type folding machine, in addition to the nonwoven fabric manufacturing apparatus described later.

[Packaging container]
Examples of packaging containers include paper cartons and film packaging containers.

[MD direction stiffness]
The stiffness in the MD direction of the nonwoven fabric sheet refers to the average value of the front and back surfaces of the sheet when the sample is measured with a width of 2.5 cm and a length of 15 cm in accordance with JIS L 1096 (1999) 45 ° cantilever method, and is 60 mm or more. It is preferably 100 mm or less. If it is outside this range, the take-out property of the nonwoven fabric sheet will be affected.

[CD direction stiffness]
The stiffness in the CD direction of the nonwoven fabric sheet refers to the average value on the front and back surfaces of the sheet when measuring a sample with a width of 2.5 cm × length of 15 cm in accordance with JIS L 1096 (1999) 45 ° cantilever method, 50 mm or less. is preferably When the rigidity in the CD direction is 50 mm or more, the nonwoven fabric sheet becomes difficult to fold.

[MD/CD ratio of stiffness]
It is preferable that the MD/CD ratio of the stiffness of the nonwoven fabric sheet is 1.5 or more. Sheets with high rigidity are folded while being stacked along the direction of flow of the folding plate, so folding misalignment or the like occurs unless the rigidity in the CD direction is low.

[Dry tensile strength]
The dry tensile strength of the non-woven fabric sheet is measured based on the tensile test method of JIS P8113 without changing the number of product plies.
The longitudinal tensile strength DMDT (Dry Machine Direction Tensile strength) of the nonwoven fabric sheet when dried is preferably 10 N/25 mm or more and 70 N/25 mm or less. In addition, DCDT (Dry Cross Direction Tensile strength) of the non-woven fabric sheet when dry is preferably 5 N/25 mm or more and 25 N/25 mm or less.

[MD/CD intensity ratio]
The MD/CD intensity ratio of the nonwoven fabric sheet can be calculated from DMDT/DCDT, and is preferably 1.8 or more and 3.4 or less. Since the strength affects the rigidity, the nonwoven fabric sheet with lower lateral strength is more likely to be laterally folded.

[Strength in take-out direction (DCDT)/basis weight (BW)]
When the nonwoven fabric sheet is taken out from the packaging container by the pop-up method, the value obtained by dividing the strength in the take-out direction by the basis weight is 0.1 N/25 mm/gsm or more, and the upper limit is, for example, 0.5 N/25 mm/gsm or less. preferable.

[Slit processing]
A slit is formed in the length of the laminate in the take-out direction, and the sheets are alternately folded while being piled up in the folding section of the M/F type folding machine.
Slitting may be performed before the folding section of the spunlace manufacturing machine, the original fabric inspection machine, or the M/F type folding machine.

[The product of the basis weight of the laminate, the number of plies, and the number of sets]
The product of the basis weight of the nonwoven fabric sheet, the number of plies, and the number of sets is preferably 2,000 or more and 10,000 or less. Within this range, good cuttability is obtained with a cut-off saw, which serves as a guideline for the amount of sheets.

[Nonwoven fabric manufacturing equipment]
FIG. 2 is a diagram illustrating a nonwoven fabric manufacturing apparatus according to an embodiment of the present invention.
As shown in FIG. 2, the manufacturing apparatus 1 of the nonwoven fabric manufactures a spunlaced nonwoven fabric sheet so that the blending ratio of pulp as the cellulosic fiber is 60% or more. The nonwoven fabric manufacturing apparatus 1 can also be manufactured so that the blending ratio of rayon is 60% or more instead of pulp.
A nonwoven fabric manufacturing apparatus 1 includes an airlaid device 2 as a pulp airlaid section, a synthetic fiber web feeder 3 as a synthetic fiber layer feeder, and a suction device 4 as a lamination forming section on the upstream side. The suction device 4 is arranged to face the lower side of the air raid device 2 .
Downstream of these devices 2, 3, and 4 in the transport direction TD, a water jet device 5 as a water entanglement section and a drying device 6 as a dewatering/drying section are arranged in order from the upstream side. . Downstream of the drying device 6, there is further provided a winding device 7 for winding the continuously manufactured composite nonwoven fabric CWeb.

The air-laid device 2 includes a defibrator 21 that defibrates (also referred to as fiber opening) the raw material pulp RP in which fibers are densely packed in a sheet form into pulp fibers, and an air blower (not shown). It has a duct 22 for conveying the pulp fibers FP to the airlaid hopper 23 and the like. The air-laid hopper 23 is designed so that the defibrated pulp fibers FP descend while dispersing and gradually pile up on a stacking position 24 set on the bottom surface.
A suction device 4 is arranged below the stacking position 24 so as to face it. More specifically, the suction device 4 has a suction section 42 on the upper surface of the device main body 41, and the suction section 42 is set to the stacking position 24 so as to apply a suction force (negative pressure) to the pulp fibers FP. I have

A carrier wire 43 for carrying the web is arranged around the suction device 4 . The transport wire 43 is arranged so that the pulp fiber FP can be placed at the stacking position 24 and transported downstream. However, the pulp fibers FP are not placed directly on the conveying wire 43 . This will become clear in the description below.
The conveying wire 43 is formed with an open mesh (mesh) so that the suction force of the suction portion 42 extends to the opposite side (upper side).

Below the airlaid device 2 and upstream of the suction device 4, a synthetic fiber web supply device 3 is arranged. A synthetic fiber web SW prepared in advance is set in the form of a roll in the synthetic fiber web supply device 3 . A synthetic fiber web SW is pulled out from the synthetic fiber web supply device 3 and transported to the stacking position 24 on the transport wire 43 described above.
As the synthetic fiber web SW, it is preferable to use a continuous filament web formed by a spunbond method. The synthetic fiber here may be a single fiber made of any one material selected from PP, PET, and PE, or may be a composite fiber made of a plurality of materials.

The above-described pulp fibers FP are placed (stacked) on the synthetic fiber web SW positioned at the stacking position 24 , and the synthetic fiber web SW is transported downstream on the transport wire 43 .
At the stacking position 24, the suction force of the suction unit 42 of the suction device 4 passes through the transport wire 43 and acts on the synthetic fiber web SW and the pulp fibers FP thereon. Therefore, in the laminated web that has moved downstream through the lamination position 24, the lower synthetic fiber layer (synthetic fiber web SW) and the pulp fiber layer (pulp web) placed thereon are laminated. The preliminary laminate PWeb in the folded state is obtained.

The above-described preliminary laminate PWeb is maintained in a laminated state by being sucked by the suction force of the suction device 4 . At this time, the upper pulp fiber layer is in a state in which the pulp fibers FP are densely packed. However, if the preliminary laminate PWeb is transported into the water jet device 5 on the downstream side as it is, there is a risk that some of the pulp fibers FP will be blown up by the airflow that accompanies the transport.
Therefore, in the manufacturing apparatus 1, the nipping rollers 28 for sandwiching the preliminary laminate PWeb from above and below to stabilize the placement state of the pulp fibers FP on the synthetic fiber web SW, and the upstream side of the water jetting device 5 are provided. A pre-wetting device 30 is provided for applying moisture to the pulp fibers FP for scattering prevention. The pre-wetting device 30 preferably includes a nozzle 31 that sprays water mist or a low-pressure rod-shaped stream of water from above the preliminary laminate PWeb, and a nozzle 31 that sprays water from the lower side of the preliminary laminate PWeb (that is, the lower surface of the synthetic fiber web SW). and a suction device 32 that applies a suction force.

The nipping roller 28 and the prewetting device 30 can be understood as a pretreatment section for smooth execution of the hydroentanglement treatment in the jetting device 5 . The pretreatment section shown in FIG. 2 is a preferred configuration example, and it is also possible to have a configuration in which the nipping roller 28 is omitted.

The water jet device 5 sprays a high-pressure water jet onto the preliminary laminate PWeb treated by the pretreatment units 28 and 30 to promote entangling of the pulp fibers. This promotes integration of the upper pulp fiber layer and the lower synthetic fiber layer.
The water jetting device 5 has water jetting nozzles (not shown) arranged in multiple stages along the transport direction TD. A suction device (not shown) is arranged so as to face the water jet nozzle. While spraying a high-pressure water jet from a water jet nozzle onto the upper pulp web, the suction force of the suction device is applied to the underside of the lower synthetic fiber layer.
The pre-wetting device 30 described above may be replaced by spraying water from the first-stage water jet nozzle at a low pressure.

A carrier wire 55 is also arranged in the water jet device 5 . A transport wire 55 receives the preliminary laminate PWeb downstream of the pretreatment units 28 , 30 and transports it into the water jet device 5 .
Therefore, the preliminary laminated body PWeb conveyed on the conveying wire 55 is subjected to more hydroentanglement processing as it goes downstream in the conveying direction TD, and when it leaves the water jet device 5, the upper pulp fibers A good entanglement of the layer with the underlying synthetic fiber web is achieved.
As the carrier wire 55, it is preferable to use a wire having a mesh size of 40××40 to 100×100 (inch mesh), for example. Further, for the purpose of imparting an uneven pattern or the like to the composite type nonwoven fabric CWeb after commercialization, the carrier wire 55 may be provided with a design pattern sheet, or the diameters of the warp and weft threads may be individually set.
The web is in a wet state immediately after coming out of the water jet device 5, and the bonding between the pulp fibers is not sufficiently established before drying.

Therefore, a drying device 6 for removing water from the wet web is provided on the downstream side of the water jet device 5 . The drying device 6 illustrated here is preferably an air-through dryer. The rotatable dryer main body 61 is a cylindrical body, and has a large number of through holes on its peripheral surface. It is a composition that blows out. Therefore, when the wet web comes out of the drying device 6, it is sufficiently dried and the fibers are completely bonded to form a composite type nonwoven fabric CWeb as a finished product.

In addition, the dried pulp fibers are bound together by hydrogen bonding. Then, as described above, when heat-fusible fibers, for example, are additionally blended with the raw material pulp RP, the heat-fusible fibers are fused to each other or the pulp fibers are also fused by heating to realize a new bond. Therefore, when fibers having heat-fusible properties are additionally blended with pulp fibers, a composite nonwoven fabric CWeb that achieves stronger bonding can be obtained.
The composite type nonwoven fabric CWeb continuously produced in this manner is wound around the roller 71 of the winding device 7 to complete a series of steps.
As exemplified here, drying with an air-through dryer is preferable because the finished nonwoven fabric CWeb can be finished into a bulky, thick and luxurious product.

Also, although not shown, an embossing device may be further arranged upstream or downstream of the drying device 6 . The embossing device may be arranged as necessary for the purpose of adjusting the thickness, texture, water absorbency, etc. of the nonwoven fabric CWeb as a product. Such an embossing device may be a known one. For example, by sandwiching between rolls (metal rolls, or metal and rubber rolls) on which an uneven pattern is formed, a web having unevenness can be obtained. . For example, by arranging an embossing device upstream of the drying device 6, it is possible to adjust the apparent thickness of the composite type nonwoven fabric CWeb produced as a product to be thicker.
Moreover, there are cases where it is desired to give priority to the shape retention of the embossed shape of the composite type nonwoven fabric CWeb as a product. In this case, the embossing device should be arranged downstream of the drying device. In this case, it is preferable to employ a thermal embossing (metal roll with uneven pattern) device.

The nonwoven fabric manufacturing apparatus 1 described above manufactures a pulp web that will become a pulp fiber layer by an airlaid device 2 . This airlaid apparatus 2 is much smaller than a nonwoven fabric manufacturing apparatus using a wet method, and maintenance of the equipment is easy. In addition, since the apparatus as a whole can be made compact, it is easier to switch products than in the case of the wet method, and the apparatus for manufacturing nonwoven fabrics can be applied to a wide variety of products while suppressing the manufacturing cost.

[Calendar processing]
FIG. 3 shows an example of an original fabric inspection/slitting machine according to an embodiment of the present invention. A reel 103 wound by the winding device 7 shown in FIG. At this time, calender processing is performed in two stages in the order of the calender machine 101 of the first stack and the calender machine 102 of the second stack. Of course, either the calender machine 101 of the first stack or the calender machine 102 of the second stack may carry out the calendering process at only one stage. It is also possible to perform calendar processing with an on-machine calendar.

[M/F type folding machine]
FIG. 4 is a diagram showing the configuration of the folding section of the M/F folding machine according to the embodiment of the present invention.

As shown in FIG. 4, the folding unit 250 is configured by arranging individual folding plate devices 250a to 250c in a line. It will be lined up. That is, each of the folding plate devices 250a-250c alternately folds a pair of continuous sheets (the webs described above) 257 to produce a set of folded laminates 290, and a set of folded stacks 290 folded by the folding plate device 50a. A set of stacks of the next folding plate device 50b is engaged with the stack, and the stack of the next folding plate device 50c is engaged with the stack, so that the stack is continuously folded and stacked one after another on the conveyor 90. 100 pairs of pop-up type nonwoven sheet laminates are finally manufactured by cutting in the longitudinal direction. Then, the laminate of the non-woven fabric sheets is appropriately packed in a carton or a packaging container such as film packaging to obtain a product.

The M/F type folding machine has a large number (three or more) of PR (parent roll) stands in front of the folding section 250, and feeds the web to the folding section 250 from the PR stands. Therefore, if the above ply machine is integrated with the M/F type folding machine and the ply process is simultaneously performed on the PR stand of the MF, there is an advantage that equipment for the ply machine can be omitted.
In addition, there is a case where a web slit to the product width is attached to the PR stand, and a case where the PR stand is attached with a web that is multiple times the product width and is slit to the product width just before the folding portion 250 .

[Cut-off saw]
FIG. 5 is a diagram illustrating a cut-off saw according to an embodiment of the invention.
As shown in FIG. 5, a laminate bundle 290 in which sanitary thin papers are alternately folded is cut to the length of the product by a cut-off saw 291 to obtain a laminate (clip) 290a.

The carton of this embodiment contains the above-described laminated body in a container, and the container is provided with an outlet for a wiper. The container can usually be a paper carton or a polyethylene pack (film packaging). When the container is a paper box, the take-out opening is provided on the upper surface of the box, and a polyethylene film having a slit along the longitudinal direction at approximately the center in the width direction is adhered to the inside of the take-out opening with an adhesive. ing.

Hereinafter, the present invention will be described in detail with reference to examples. It should be noted that the present invention is by no means limited to the examples shown below.

<Examples 1 to 3, Comparative Examples 1 to 3>
A spunlace nonwoven fabric obtained by hydroentangling the pulp and the spunbond nonwoven fabric was processed into an embossing machine, an M/F type folding machine and a cartoner to obtain a nonwoven fabric wiper package. Only Examples 2 and 3 were embossed.

The stiffness in the MD direction and the stiffness in the CD direction are measured with a cantilever type flexibility tester in accordance with JIS L 1096 (1999) 45° cantilever method. The MD/CD ratio of was calculated.
The tensile strength DMDT in the longitudinal direction of the non-woven fabric sheet when dry and the tensile strength in the transverse direction of the non-woven fabric sheet when dry DCDT are measured based on the tensile test method of JIS P8113, and from the measurement results, the MD / CD of the non-woven fabric sheet An intensity ratio was calculated.
The take-out direction strength (DCDT)/basis weight (BW) was 0.2 N/25 mm/gsm and 0.1 N/25 mm/gsm in all of Examples 1 to 3 and Comparative Examples 1 to 3. .

The product of the basis weight of the laminate, the number of plies, and the number of sets is 5480 for Example 1, 6510 for Example 2, 8920 for Example 3, 6480 for Comparative Example 1, 9,250 for Comparative Example 2, and 9,250 for Comparative Example 3. was 11136, and Examples 1 to 3 were all 2,000 or more and 10,000 or less.
The cutability was evaluated by three grades of cutability with a cut-off saw (○: good, Δ: deviation occurred, ×: continuous operation impossible).
Fold misalignment was visually observed.
Four-level evaluation (◎, 〇, △, ×) by monitor test for texture and ease of removal

As shown in Table 1, the nonwoven fabric wiper packages of Examples 1 to 3 had good cuttability even though they were spunlace nonwoven fabrics with high rigidity, and they did not shift when folded with an M/F folding machine. No wrinkles were generated.
In addition, when cutting the bundle after lamination, there was no oblique cut or partial cut failure, and the cuttability was also good.
In addition, the nonwoven fabric wiper packages of Examples 1 to 3 were improved in texture and drawability. In particular, the texture of the embossed product was highly evaluated.
In addition, by using a sheet having appropriate processability for a highly rigid hydrophilic spunlace nonwoven fabric wiper, the nonwoven fabric wiper can be manufactured with high productivity using an M/F processing machine.

Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope of the invention described in the above embodiments. It will be clear to those skilled in the art that it is possible to add In addition, it is clear from the description of the scope of the claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

257 spunlace nonwoven sheet 258 embossed

Claims (8)

A nonwoven fabric wiper package comprising: a step of folding and stacking spunlace nonwoven fabric sheets with a multi-folder type folding machine, cutting them to a predetermined size to form a layered body; and storing the layered body in a packaging container. A manufacturing method of
The sheet has a pulp or rayon content of 60% or more,
The basis weight of the sheet is 45 g/m ² or more and 90 g/m ² or less,
The stiffness of the sheet in the CD direction is 50.0 mm or less,
The MD/CD ratio of the stiffness of the sheet is 1.5 or more,
The MD/CD strength ratio of the sheet is a ratio of 1.8 or more and 3.4 or less,
A non-woven fabric wiper package having a value obtained by dividing the strength in the take-out direction by the basis weight of 0.1 N/25 mm/gsm or more and 0.5 N/25 mm/gsm or less when the sheet is taken out from the packaging container by a pop-up method . manufacturing method . 2. The method for producing a nonwoven wiper package according to claim 1, further comprising the step of hot embossing the sheet to improve water absorbency prior to the step of forming the laminate. 3. The method for manufacturing a non-woven wiper package according to claim 2, wherein the embossed shape is a circular shape including an ellipse, or a polygonal dot shape. The method for manufacturing a nonwoven fabric wiper package according to claim 2 or 3, wherein the embossing has a pressing area of 1 ^mm2 /piece or more and 15 ^mm2 /piece or less. 5. The method for manufacturing a non-woven fabric wiper package according to any one of claims 2 to 4, wherein the embossing has a pressing portion area ratio of 10% or more and 25% or less in the entire sheet. The method for manufacturing a nonwoven fabric wiper package according to any one of claims 2 to 5, wherein the embossing has a gap of 0.5 mm or more, which is a non-pressing portion in the CD direction of the pressing portion. Prior to the step of forming the laminate, a step of slitting the laminate in a direction in which it is taken out,
7. The nonwoven fabric wiper package according to any one of claims 1 to 6, wherein in the step of forming the laminate , the sheets are alternately folded while being stacked in a folding section of the multi-folder type folding machine. manufacturing method . The method for manufacturing a nonwoven fabric wiper package according to any one of claims 1 to 7, wherein the product of basis weight, number of plies and number of sets of the sheet is 2,000 or more and 10,000 or less.

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