JPH0782650A - Method for producing wiping cloth and device for production the same - Google Patents

Abstract

PURPOSE:To provide a method and a device for producing wiping cloth uniform in the surface and free from the disorder of its weave. CONSTITUTION:A paper sheet 1 is laminated to the surface of a filament nonwoven fabric sheet 4, and high pressure water column flows are jetted on the paper sheet side of the laminated product to obtain the wiping cloth in which the pulp fibers constituting the paper sheet are interlaced with the filaments constituting filament nonwoven fabric. Before the high pressure water column flows are jetted on the laminate, a perforation treatment using sticking needles is applied to the whole surface of the paper sheet. Thus, stayed water is easily drained from the holes of the paper sheet subjected to the perforation treatment, and the jetting energies of the high pressure water column flows are maximally utilized to uniform the action effects of the high pressure water column flows on the laminate. The wiping cloth uniform in the surface, free from the disorder of the weave and excellent in the quality is consequently obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a wiping cloth useful as a disposable hand wipe, a wet tissue, an industrial waste cloth, a wiper, a disposable rag, and the like. More specifically, a high pressure water column flow is applied to a laminate of a paper sheet and a long fiber non-woven sheet to produce a wipe cloth in which pulp fibers forming the paper sheet and long fibers forming the long fiber non-woven sheet are entangled with each other. To improve the method and apparatus.

[0002]

2. Description of the Related Art Conventionally, as a wipe cloth for disposable hand towels and the like, a dry pulp sheet in which pulp fibers are bulky accumulated has been known, but this dry pulp sheet is wet after being soaked with water or chemicals. It had the drawback of low strength and being easily broken during use.

On the other hand, as a cleaning cloth for disposable hand wipes,
Also used is a non-woven fabric in which rayon fibers are sublimely accumulated and then the rayon fibers are bonded to each other with a rubber binder so that water or the like is impregnated. Since this wiping cloth has the rayon fibers bonded to each other, the wiping cloth has a high wetting strength, but it has a drawback that it has a bad odor because it contains a rubber binder. Further, since the rubber-based binder has a rough texture, it has a drawback that the feeling of using the wipe is not good. Therefore, a non-woven fabric in which rayon fibers are bonded to each other without using a rubber-based binder has been proposed. To entangle the rayon fibers with each other, it is possible to apply a high-pressure water column flow to the web in which the rayon fibers are accumulated. The wiping cloth thus obtained is preferable in that it does not give off a bad odor and does not have a rough feel.

However, the wiping cloth made of rayon fibers has the following drawbacks. That is, since the rayon fiber is excellent in hydrophilicity, when it is used as a wiping cloth, it absorbs water well, swells, and its rigidity is extremely lowered. If the rigidity of rayon fiber decreases,
The rigidity of the wiping cloth itself is also lowered, the repulsive force when the wiping cloth is held by the hand is lowered, and it becomes difficult to use.

As a result of various studies to solve the above-mentioned drawbacks, the present applicant succeeded in solving the above-mentioned drawbacks by the following method for producing a wiping cloth. That is, after laminating a long-fiber nonwoven fabric sheet and a paper sheet made of pulp fiber, a long-fiber non-woven fabric and pulp fibers are entangled with each other by injecting a high-pressure water column flow from the paper sheet side of the obtained laminate to wipe them. (Japanese Patent Application No. 3-20487)
5, Japanese Patent Application No. 4-89650 and Japanese Patent Application No. 4-113
048 etc.). Since the wiping cloth obtained by this method mainly retains the shape of long fibers that are difficult to absorb water, the wiping cloth does not have the drawback of being less rigid during use and being difficult to grip with fingers.

However, this wiping cloth had drawbacks due to its manufacturing method. That is, this technique is to stack a paper sheet on the surface of a long fiber non-woven sheet,
A high-pressure water column flow treatment is performed toward the paper sheet side of the obtained laminate, and the high-pressure water scattered on the paper sheet without penetrating the laminate sheet at this time is discharged by a suction device installed under the net conveyor. However, when the basis weight of the paper sheet becomes large, some high-pressure water cannot pass through the sheet and stays on the paper sheet, so that the jet energy of the high-pressure water column flow is blocked by this staying water. This reduces the high pressure water column flow treatment effect and also makes the action effect of the high pressure water column flow on the fibrous web non-uniform. In short, when the basis weight of the paper sheet is increased, the water permeability of the paper sheet is decreased, and accumulated water is easily generated, which makes the high pressure water column flow treatment effect non-uniform and reduces the effect.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned drawbacks, and to keep the accumulated water on the paper sheet of the sheet-like laminate to such an extent that it does not hinder the high-pressure water column flow treatment. By jetting out the energy of the high-pressure water column flow to the maximum, the high-pressure water column flow treatment effect on the sheet-like laminate is made uniform, and the treatment effect is improved, so that the formation of turbulence on the surface is prevented. It is an object of the present invention to provide a manufacturing method and a manufacturing apparatus capable of obtaining a wiping cloth having excellent quality.

[0008]

According to the present invention, a paper sheet is laminated on the surface of a long fiber non-woven fabric on one surface thereof, and the obtained long sheet-like laminate is transferred by a conveyor,
By performing a high-pressure water column flow treatment so as to penetrate from the paper sheet side of the laminate to the long fiber nonwoven fabric sheet side, the pulp fibers forming the paper sheet and the long fibers forming the long fiber nonwoven fabric are entangled with each other. In the method for manufacturing a wiping cloth, before subjecting the long sheet-shaped laminate to the high-pressure water column flow injection treatment, a method for manufacturing a wiping cloth characterized in that a perforation treatment is performed on the entire surface of the paper sheet with a puncture needle. provide.

According to another aspect of the present invention, there is provided a conveyor for transferring a long sheet-like laminate in which a paper sheet is laminated on the surface of a long-fiber nonwoven fabric sheet, and a long sheet-like sheet being transferred by the conveyor. In a manufacturing apparatus for a wiping cloth, which comprises a processing device for applying a high-pressure water column flow to the paper sheet side of the laminate,
Manufacture of a wiping cloth characterized in that a paper sheet piercing device consisting of a needle roll having a pin pitch in the rotation direction and the axial direction in the range of 5 to 30 mm is provided at an upstream position of the high pressure water column flow injection treatment device. Provide a device.

The method and apparatus for manufacturing the wiping cloth of the present invention will be described in detail below. As the long fibers constituting the long fiber nonwoven fabric sheet used in the present invention, conventionally known long fibers of thermoplastic resin can be used. Examples of such long fibers include polyolefin long fibers, polyester long fibers, polyamide long fibers, and polyacrylate long fibers.
In the present invention, the reason for using long fibers is that a nonwoven sheet made of long fibers is superior in tensile strength and morphological stability as compared to a web made of short fibers, and in the case of long fibers, high pressure water column flow treatment. It is because even if it is applied, it is difficult to wash away with the water column flow.

The fineness of the long fibers is preferably 1 to 4 denier. When the fineness of the long fibers exceeds 4 denier, the flexibility of the long fiber non-woven fabric is lowered and the usability when used as a wiping cloth is lowered. On the other hand, when the fineness of the long fibers is less than 1 denier, strict conditions are indispensable for producing the long fibers, and it becomes difficult to efficiently produce the long fibers and eventually the long fiber nonwoven fabric at a high speed.

The basis weight of the long fiber non-woven fabric is 5 to 30 g / m ²
Is preferred. Particularly, 5 to 20 g / m ² is more preferable.
When the basis weight of the long fiber non-woven fabric exceeds 30 g / m ² , the laminated sheet of the paper sheet and the long fiber non-woven fabric is formed into a paper sheet even if a high-pressure water column flow is applied from the paper sheet side to the long fiber non-woven fabric side. It becomes difficult for the pulp fibers to move to the back surface of the long-fiber non-woven fabric (the surface that is not in contact with the paper sheet), and the pulp fibers are unevenly distributed on one side of the obtained wiping cloth, and the water absorption on the surface with few pulp fibers Tends to decrease. Furthermore, since the pulp fibers and the long fibers are not sufficiently bonded to each other, the pulp fibers are likely to fall off when the wiping cloth is used. On the contrary, when the basis weight of the long-fiber nonwoven fabric is less than 5 g / m ² , the morphological stability of the long-fiber nonwoven fabric is lowered, and the wet strength of the obtained wiping cloth tends to be lowered. Furthermore, when the gap between the long fibers becomes large and the high pressure water column flow is applied, the pulp fibers flow out from the gap, and when the high pressure water column flow after use is recovered, the pulp fibers are There is a risk of mixing in a large amount.

The long fiber nonwoven fabric used in the present invention may be a web in which the long fibers are self-bonded to each other, or may be a fleece in which the long fibers are not bonded to each other. Good. In particular, among the former, it is preferable that a large number of point fusion areas where the long fibers are self-fused are arranged in a scattered manner. The reason for this is that the long fibers have a point fusion area where they are self-fused to each other, so that the morphological stability is excellent, and in the areas other than the point fusion area, the long fibers are not self-fused to each other. Since they are collected in a free state, they are excellent in flexibility and easily entangled with pulp fibers.

For self-bonding the long fiber web, a conventionally known method can be used. For example, a method of introducing a long fiber web between a heated concavo-convex roll and a smooth roll, melting or softening the long fibers at a position where the convex portions of the concavo-convex roll abut, and fusing the long fibers to each other. Etc.

A paper sheet is laminated on the long fiber non-woven fabric prepared as described above. As the paper sheet, any conventionally known one can be used. The basis weight of the paper sheet is also optional and not particularly limited,
Particularly, a paper sheet having a basis weight of 10 to 100 g / m ² measured by the method shown in JIS P 8124 is preferable.
When the basis weight of the paper sheet is less than 10 g / m ² , the absolute amount of pulp fibers is small, and it becomes difficult to give sufficient hygroscopicity and water retention to the obtained wiping cloth. Conversely, the basis weight of the paper sheet is 100
If it exceeds g / m ² , the absolute amount of pulp fiber is too large,
Even if a high pressure water column flow is applied to a paper sheet, it tends to be difficult to give momentum to the extent that each pulp fiber can be entangled with a long fiber, and the number of incompletely entangled fibers increases. Furthermore, the absolute amount of pulp fibers is too high, which reduces the flexibility of the resulting wipe.

The pulp fibers that make up the paper sheet include
Unbleached pulp fibers or bleached pulp fibers obtained by cooking softwood and hardwood with the kraft method, sulfite method, soda method, polysulfide method, or mechanical pulp fibers such as ground pulp fiber, chemo-mechanical pulp fiber, thermomechanical pulp fiber. Can be used alone or in combination. When the softwood pulp fiber and the hardwood pulp fiber are mixed and used, the weight ratio thereof is preferably softwood pulp / hardwood pulp = 10.
0-20 / 0-80, more preferably 100-40 / 0
The range is from -60. When the hardwood pulp content exceeds 80%, not only the outflow amount of the pulp due to the high pressure water column flow increases, but also the flexibility of the sheet after the entanglement tends to decrease.

The density of the paper sheet used in the present invention (JI
Measured by the method shown in S P 8118) is 0.6 g /
cm ³ or less is preferable. More preferably 0.55 g / c
m ³ or less. When the density of the paper sheet exceeds 0.6 g / cm ³ , when the high pressure water column flow is applied from above the paper sheet, the movement of the pulp fiber is suppressed and the amount of energy required for entanglement increases.

This paper sheet is laminated on the surface of a long-fiber nonwoven fabric prepared in advance. At this time, the basis weight of the long-fiber nonwoven fabric and the basis weight of the paper sheet (the basis weight of the paper sheet is JIS P 8124).
The long fiber nonwoven fabric has a ratio of (measured by the method shown in):
It is preferable that the paper sheet is 1: 1 to 1:19. Long-fiber non-woven fabric: paper sheet = 1: 1
Since the amount of the pulp fibers is relatively small with respect to the amount of the long fibers, the water absorbency and the water retention of the obtained wiping cloth tend to decrease. In addition, since the amount of inexpensive pulp fiber is smaller than that of long fiber, the obtained wiping cloth itself becomes expensive. vice versa,
Long-fiber non-woven fabric: Paper sheet = 1: If the basis weight of the paper sheet exceeds 1:19, all of the pulp fibers constituting the paper sheet are hard to be entangled with the long fibers, and the obtained wiping cloth is wet. When used by being used, pulp fibers are likely to fall off.

The long sheet-like laminate obtained by laminating a paper sheet on the surface of a long fiber non-woven fabric is placed and transferred on a transfer conveyor made of a water-permeable structure such as a wire mesh, and the long sheet is transferred. The high-pressure water column flow is jetted from the paper sheet side of the sheet-shaped laminate so that the high-pressure water column flow penetrates into the long-fiber nonwoven fabric.
This high-pressure water column flow is obtained by ejecting water at high pressure through a nozzle hole having a fine diameter of the high-pressure water column flow treatment device 1.
For example, through pore size 0.01mm~0.3mm about the nozzle holes, obtained by jetting water at 10kg / cm ² ~150kg / cm ² pressure of about. When this high-pressure water column flow is applied to the laminate, the high-pressure water column flow collides with the paper sheet. Then, the paper sheet first adheres to the long-fiber non-woven fabric, and then in this adhered state, the paper sheet is broken, the pulp fibers constituting the paper sheet are isolated, and the pulp fiber is not deformed such as bent or twisted. At the same time, the pulp fibers are given sufficient kinetic energy to cause random motion in the pulp fibers. As a result, due to their combined action, the pulp fibers and the long fibers in the long fiber nonwoven fabric are entangled with each other, and the pulp fibers also entangle the long fibers with each other. A sheet in which pulp fibers and long fibers are entangled with each other is obtained as described above.

The point of the present invention is to perform perforation treatment with a puncture needle on the entire surface of the paper sheet prior to subjecting the long sheet-shaped laminate to the high-pressure water column flow injection treatment. By performing the high-pressure water column flow injection process after the piercing process, accumulated water generated from a part of the high-pressure water scattered on the paper sheet is easily removed. Therefore, the problem that stagnant water generated near the collision point of the high pressure water column flow and the paper sheet reduces the high pressure water column flow treatment effect, and a wiping cloth of excellent quality with no formation disorder on the surface can be obtained. . The needle punching treatment of the paper sheet is preferably performed before laminating the paper sheet and the long fiber non-woven fabric, but may be performed after laminating before the high pressure water column flow injection treatment.

The manufacturing method and manufacturing apparatus of the present invention will be described with reference to a specific example shown in FIG.
And the long fiber non-woven sheet 4 is pulled out from the roll 9
Drawn from. The paper sheet 1 and the long-fiber non-woven fabric sheet 4 are laminated and placed on a transfer conveyor 5 made of a water-permeable structure such as a wire mesh so that the paper sheet is on the upper surface and transferred. The sheet-shaped laminate 12 transferred on the conveyor 5 and the high-pressure water column flow injection processing device 6 inject a high-pressure water column flow over the entire width thereof. Most of the jetted high-pressure water penetrates the sheet-shaped laminate and the conveyor 5 and drains 7
Is discharged to.

Prior to being laminated with the long fiber nonwoven fabric sheet 4, the paper sheet 1 pulled out from the roll 8 passes through a puncture device to continuously undergo puncture treatment on the entire surface of the paper sheet. The needle punching processing device includes a needle roll 2 and a receiving roll 3. The paper sheet 1 is sent to the puncture processing device at a speed substantially the same as the peripheral speed of the needle roll 2.

A large number of needles (pins) are provided on the outer peripheral surface of the needle roll 2.
Is planted, and its rotation and axial directions are 5
The range is up to 30 mm. If the pin pitch is less than 5 mm, the paper sheet is likely to be broken due to a decrease in the strength of the paper sheet, and the texture is also greatly disturbed. Further, when the pin pitch exceeds 30 mm, it becomes difficult for the accumulated water generated by the high pressure water column flow to be discharged from the holes of the paper sheet, and the accumulated water becomes an obstacle to reduce the energy of the high pressure water column flow. The water column flow treatment effect becomes non-uniform and the formation of the sheet is deteriorated.

Insertion distance (depth) of the pin with respect to the paper sheet
Is preferably 2 mm to 7 mm. Pin insertion distance is 2mm
If it is less than, even if the paper sheet is once subjected to opening treatment,
When laminated with the long-fiber nonwoven fabric sheet, the holes are easily closed. Further, when the pin insertion distance exceeds 7 mm, the pin excessively cuts into the paper sheet and the pin is not easily removed at the feeding portion of the needle roll, so that the paper sheet easily breaks.

The pin diameter of the needle roll is preferably in the range of 0.50 to 1.20 mm at the portion where the pin is inserted into the paper sheet. If the pin diameter is less than φ0.50 mm, the holes are small and the surface tension of the water on the paper sheet becomes large, and it becomes difficult for the accumulated water to be discharged from the holes of the paper sheet. On the other hand, if the pin diameter exceeds 1.20 mm, the accumulated water is easily discharged, but the unevenness on the paper sheet becomes large, the texture is disturbed, and the appearance is deteriorated. As the receiving roll 3, it is preferable to use a brush roll, a rubber roll, a felt roll, or the like that buffers the impact with the needle roll.

The wipe cloth obtained as described above is one in which pulp fibers and long fibers are entangled and integrated. And
If desired, this wiping cloth is provided with a wetting agent such as water or propylene glycol, an antibacterial agent such as alcohols and parabenzoic acid, an antifungal agent, an agent such as a fragrance, an industrial wiper, a waste cloth, It is used as a wipe for counter cloths and wet tissues.

[0027]

【Example】

Example 1 Obtained by dry papermaking using a long-fiber nonwoven fabric sheet in which polypropylene long-fibers are accumulated and which has a large number of spot-fused areas in which polypropylene long-fibers are self-bonded to each other and softwood bleached kraft pulp fibers. Prepared paper sheet. The fineness of the long fibers constituting this long-fiber nonwoven fabric is 2.3 denier, and the basis weight of the long-fiber nonwoven fabric sheet is 10 g / m ² .
The basis weight of the paper sheet was 60 g / m ² . A paper sheet was passed between a pair of needle rolls and a brush roll to continuously perforate the entire width of the sheet, and then the paper sheet and the long fiber nonwoven fabric sheet were laminated. The pin pitch of the needle roll is 5 mm in both the rotational and axial directions, the pin insertion distance is 4 mm, and the pin diameter is 1.00 mm.

Then, the perforated paper sheet was placed on the upper side, and the long fiber non-woven fabric was placed on the lower side, and the sheet was placed on the transfer conveyor formed of the wire mesh. Next, while transporting this laminated sheet at a speed of 30 m / min, a high-pressure water column flow was applied at a water pressure of 50 kg / cm ² using a high-pressure water column flow injection treatment device in which nozzle holes having a hole diameter of 0.1 mm are arranged at 1 mm intervals. Was sprayed, and a high-pressure water column flow was applied to the surface of the paper sheet. As described above, the pulp fiber and the long fiber constituting the paper sheet were entangled with each other to obtain an integrated wiping cloth.

Example 2 A wiping cloth was obtained in the same manner as in Example 1 except that the basis weight of the paper sheet was changed to 90 g / m ² and a needle roll having a pin pitch of 10 mm in both the rotational direction and the axial direction was used. It was

Example 3 A wiping cloth was obtained in the same manner as in Example 1 except that the basis weight of the paper sheet was changed to 30 g / m ² and a needle roll having a pin pitch of 15 mm in both the rotational direction and the axial direction was used. It was

Comparative Example 1 A wiping cloth was obtained in the same manner as in Example 2 except that the paper sheet was not perforated by a pair of needle rolls and a receiving roll.

Comparative Example 2 A wiping cloth was obtained in the same manner as in Example 1 except that a needle roll having a pin pitch of 3 mm in both the rotational direction and the axial direction was used.

Comparative Example 3 A wiping cloth was obtained in the same manner as in Example 1 except that a needle roll having a pin pitch of 40 mm in both the rotational direction and the axial direction was used.

The wiping cloths obtained in Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to the following tests to evaluate their quality. The results are shown in Table 1.

[0035]

[Table 1]

The quality of the wiping cloth was evaluated by the following method. 1) Surface condition of wiping cloth: The uniformity of the surface of the wiping cloth was visually evaluated by 15 monitors. The sensory evaluation was performed in the following five stages, and the average value was calculated. 5: It was extremely uniform.
4 ... It was uniform. 3 ... Almost uniform, although some non-uniform portions were observed. 2: There were many non-uniform parts. 1 ... There were extremely many non-uniform parts overall.

2) Repeatability: The wiping cloth was dipped in water, squeezed lightly, and then kneaded by hand to repeat the sensory evaluation. The sensory evaluation was carried out in the following 5 stages.
5: The strength of the wiping cloth did not almost decrease, and it was possible to use it sufficiently and repeatedly. 4 ... Although the strength of the wiping cloth was slightly lowered, it could be used repeatedly. 3 ... The strength of the wipe is
It could not withstand repeated use for several times. 2: The strength of the wiping cloth was reduced, and it could not be said that the cloth could be used repeatedly. 1 ... The strength of the wiping cloth was severely reduced, and repeated use was impossible.

The wiping cloth obtained in Example 1 was able to almost completely drain the accumulated water generated near the collision point of the high pressure water column flow and the paper sheet depending on the manufacturing conditions, and therefore the surface condition and the reusability are excellent. Met. The wiping cloth obtained in Example 2 was also affected by the decrease in the water permeability of the paper sheet with the increase in the basis weight of the paper sheet, so that the accumulated water could not be sufficiently discharged, and the wiping cloth was slightly subjected to the high pressure water column flow injection treatment. As a result, the surface condition and the reusability were slightly deteriorated. The wiping cloth obtained in Example 3 was good in both surface state and reusability since it was able to discharge a considerable amount of accumulated water which hinders the high pressure water column flow although the pin pitch of the needle roll was increased.

Comparing Examples 1 to 3 with Comparative Examples 1 to 3, under the conditions of Comparative Example 1, almost no accumulated water on the sheet can be discharged, and the accumulated water partially obstructs the high pressure water column flow. The injection treatment effect was reduced. Therefore, in the wiped cloth obtained in this way, the entanglement of the long fibers and the pulp fibers became non-uniform, the surface condition was large, and the reusability was poor. Under the conditions of Comparative Example 2, the pin pitch is 5 m.
Although the number of apertures was increased and the accumulated water was easily discharged by reducing the value to m, the strength of the paper sheet was reduced and the paper sheet during conveyance was easily broken. Besides,
Since the fine irregularities on the surface of the paper sheet increased, the texture of the sheet deteriorated. As a result, the wiping cloth obtained in Comparative Example 2 was excellent in repeated usability, but the surface condition was remarkably inferior. Under the conditions of Comparative Example 3, when the pin pitch is changed to 40 mm, it cannot be said that the apertures on the sheet are sufficient to discharge the accumulated water, and the high pressure water column flow effect cannot be effectively exhibited. The wiping cloth obtained in step 1 had poor surface condition and reusability.

[0040]

As described above, in the production of the wiping cloth according to the present invention, before the paper sheet is laminated on the surface of the long fiber non-woven sheet and subjected to the high pressure water jet injection treatment, the paper sheet is pierced. A perforation process is performed to facilitate discharge of accumulated water generated on the paper sheet. As a result,
When the high pressure water column flow is jetted to the laminated sheet, it is prevented that the high pressure water column flow is blocked by stagnant water and applied unevenly to the laminated sheet, and the surface of the surface is not disturbed. Can be manufactured.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a method and an apparatus for manufacturing a wiping cloth according to the present invention.

[Explanation of symbols]

 1 Paper Sheet 2 Needle Roll 3 Receiving Roll 4 Long Fiber Nonwoven Sheet 5 Conveyor 6 High Pressure Water Column Flow Injection Treatment Device 7 Drainer

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[Procedure amendment]

[Submission date] August 4, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

On the other hand, as a cleaning cloth for disposable hand wipes,
After integration into bulked rayon fibers, it has also been used as impregnated with water or the like to the nonwoven fabric coupled between rayon fibers mutually with a rubber based binder. Since this wiping cloth has the rayon fibers bonded to each other, the wiping cloth has a high wetting strength, but it has a drawback that it has a bad odor because it contains a rubber binder. Further, since the rubber-based binder has a rough texture, it has a drawback that the feeling of using the wipe is not good. Therefore, a non-woven fabric in which rayon fibers are bonded to each other without using a rubber-based binder has been proposed. To entangle the rayon fibers with each other, it is possible to apply a high-pressure water column flow to the web in which the rayon fibers are accumulated. The wiping cloth thus obtained is preferable in that it does not give off a bad odor and does not have a rough feel.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

The manufacturing method and manufacturing apparatus of the present invention will be described with reference to a specific example shown in FIG.
And the long fiber non-woven sheet 4 is pulled out from the roll 9
Drawn from. The paper sheet 1 and the long-fiber non-woven fabric sheet 4 are laminated and placed on a transfer conveyor 5 made of a water-permeable structure such as a wire mesh so that the paper sheet is on the upper surface and transferred. Sheet-like laminate transferred on the conveyor 5
On the other hand , the high pressure water column flow injection processing device 6 injects the high pressure water column flow over the entire width thereof. Most of the injected high-pressure water passes through the sheet-shaped laminate and the conveyor 5 and is discharged to the drainer 7.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction content]

Comparing Examples 1 to 3 with Comparative Examples 1 to 3, under the conditions of Comparative Example 1, almost no accumulated water on the sheet can be discharged, and the accumulated water partially obstructs the high pressure water column flow. The injection treatment effect was reduced. Therefore, in the wiped cloth obtained in this way, the entanglement of the long fibers and the pulp fibers became non-uniform, the surface condition was large, and the reusability was poor. Under the conditions of Comparative Example 2, the pin pitch is 3 m.
Although the number of apertures was increased and the accumulated water was easily discharged by reducing the value to m, the strength of the paper sheet was reduced and the paper sheet during conveyance was easily broken. Besides,
Since the fine irregularities on the surface of the paper sheet increased, the texture of the sheet deteriorated. As a result, the wiping cloth obtained in Comparative Example 2 was excellent in repeated usability, but the surface condition was remarkably inferior. Under the conditions of Comparative Example 3, when the pin pitch is changed to 40 mm, it cannot be said that the apertures on the sheet are sufficient to discharge the accumulated water, and the high pressure water column flow effect cannot be effectively exhibited. The wiping cloth obtained in step 1 had poor surface condition and reusability.

Claims (2)

[Claims] 1. A paper sheet is laminated on the surface of a long-fiber non-woven sheet, and the obtained long sheet-like laminate is transferred by a conveyor from the paper sheet side of the laminate to the long-fiber non-woven sheet side. By injecting a high-pressure water column flow so as to penetrate, a method for producing a wiping cloth in which pulp fibers forming the paper sheet and long fibers forming the long-fiber non-woven sheet are entangled, A method for manufacturing a wiping cloth, characterized in that the entire surface of the paper sheet is perforated by a puncture needle before the article is subjected to the high pressure water column flow injection treatment. 2. A conveyor for transferring a long sheet-like laminate having a paper sheet laminated on the surface of a long fiber non-woven sheet, and a paper sheet side of the long sheet-like laminate being transferred by the conveyor. A manufacturing apparatus for a wiping cloth, comprising a treatment device for injecting a high-pressure water column flow, comprising a needle roll having a pin pitch in the range of 5 to 30 mm in the rotational direction and the axial direction, at a position upstream of the high-pressure water column flow injection treatment device. An apparatus for manufacturing a wipe, comprising a paper sheet needle punching device.