KR102602509B1 - Fabrics for Wet Tissue and Method of Manufacturing The Same - Google Patents

Abstract

The present invention relates to a fabric for wet tissues and a method for manufacturing the same, and more specifically, to a fabric for wet tissues that is biodegradable, has antibacterial properties, and has excellent tensile strength, and a method for manufacturing the same.

Description

Fabrics for Wet Tissue and Method of Manufacturing The Same}

The present invention relates to a fabric for wet tissues and a method for manufacturing the same, and more specifically, to a fabric for wet tissues that has excellent tensile strength while being biodegradable and antibacterial, and to a method for manufacturing the same.

As living standards increase, interest in hygiene is increasing. Due to this high interest, most general restaurants have recently been providing wet tissues to customers.

In general, wet tissue fabric is manufactured using a dry manufacturing method and then impregnated with purified water and detergent.

They are classified into various types depending on their use, such as multi-use wet tissues for daily necessities, single-use wet tissues for food service, etc.

However, conventionally used wet tissue fabrics are mostly dry non-woven fabrics made of materials such as general pulp, rayon, PP, and PE. Therefore, when manufacturing wet tissue fabric using only general pulp, sufficient tensile strength is not secured and tearing occurs during the manufacturing process, and when using rayon, PP or PE, etc., the decomposition period is long upon disposal, which can cause serious environmental pollution.

Korean Patent Publication No. 2014-0033888 Korea Patent Publication No. 2017-0040524 Korean Patent Publication No. 1990743 Korean Patent Publication No. 1808097

The present invention was developed to solve the above problems, and its purpose is to provide a fabric for wet tissues that is biodegradable and has antibacterial performance, and a method for manufacturing the same.

Another object of the present invention is to provide a fabric for wet tissues with excellent tensile strength and a method for manufacturing the same.

In order to solve this technical problem, the fabric for wet tissues according to the present invention is characterized by containing biodegradable bleached kraft pulp and bamboo pulp.

In addition, the fabric for wet tissues according to the present invention is characterized by further comprising at least one of a dispersant, a temporary wet strength enhancer, a degassing agent, and a softener.

In addition, in the fabric for wet tissues according to the present invention, 90 to 110 parts by weight of bleached kraft pulp, 5 to 15 parts by weight of bamboo pulp, 0.01 to 0.10 parts by weight of dispersant, 4 to 15 parts by weight of temporary wet strength enhancer, and 0.01 to 0.25 parts by weight of degassing agent. It is characterized in that it is included in a ratio of 0.5 to 3 parts by weight and a softener.

In addition, in the fabric for wet tissues according to the present invention, the bleached kraft pulp has a diameter of 10 to 20 ㎛ and a length of 1 to 4 mm, and the bamboo pulp has a diameter of 5 to 15 ㎛ and a length of 1 to 4 mm, The dispersant is a nonionic surfactant, the temporary wet strength enhancer is an amine type, the degassing agent is a higher alcohol type, and the softener is a quaternary ammonium type.

In addition, the wet tissue fabric according to the present invention satisfies the longitudinal tensile strength of 25 N/cm or more, the transverse tensile strength of 15 N/cm or more, the longitudinal wet tensile strength of 7 N/cm or more, and the transverse wet tensile strength of 5 N/cm or more. It is characterized by:

In addition, the method of manufacturing a fabric for wet tissues according to the present invention includes a first step of preparing raw materials; A second step of preparing a raw material mixture by mixing the prepared raw materials; A third step of fibrillating the prepared raw material mixture; A fourth step of laminating the fibrillated raw material mixture on a mesh belt; A fifth step of dehydrating the raw material mixture laminated on the mesh belt, wherein the raw materials include biodegradable bleached kraft pulp and bamboo pulp.

In addition, in the method of manufacturing a fabric for wet tissues according to the present invention, the raw material further includes one or more of a dispersant, a temporary wet strength enhancer, a degassing agent, and a softener.

In addition, in the method of manufacturing a wet tissue fabric according to the present invention, in the first step, 9,900 to 11,000 parts by weight of water, 90 to 110 parts by weight of bleached kraft pulp, 5 to 15 parts by weight of bamboo pulp, 0.01 to 0.10 parts by weight of a dispersant, It is characterized in that it is prepared in a ratio of 4 to 15 parts by weight of the temporary wet strength enhancer, 0.01 to 0.25 parts by weight of the deaerator, and 0.5 to 3 parts by weight of the softener.

In addition, in the method for manufacturing wet tissue fabric according to the present invention, the third step is characterized in that fibrillation is performed by applying a pressure in the range of 130 to 160 N.

In addition, in the method of manufacturing a fabric for wet tissues according to the present invention, the bleached kraft pulp has a diameter of 10 to 20 ㎛ and a length of 1 to 4 mm, and the bamboo pulp has a diameter of 5 to 15 ㎛ and a length of 1 to 4 mm. The dispersant is a nonionic surfactant, the temporary wet strength enhancer is an amine type, the degassing agent is a higher alcohol type, and the softener is a quaternary ammonium type.

According to the wet tissue fabric of the present invention and its manufacturing method having the above configuration, it has the advantage of being biodegradable and having excellent antibacterial performance because it contains bleached kraft pulp and bamboo pulp.

In addition, according to the wet tissue fabric and its manufacturing method of the present invention, since the tensile strength is excellent, the occurrence of breaks during the manufacturing process can be suppressed, and as a result, the defect rate of the wet tissue fabric can be significantly reduced.

1 is a flowchart illustrating a method of manufacturing a fabric for wet tissues according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments of the present invention and drawings, but this will be described in detail so that a person skilled in the art can easily practice the present invention. This does not mean that the technical idea and scope of the present invention are limited.

Additionally, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, the fabric for wet tissues of the present invention and its manufacturing method will be described in detail.

First, the fabric for wet tissues of the present invention is composed of bleached kraft pulp and bamboo pulp, has biodegradable and flexible characteristics, and has excellent tensile strength. The wet tissue fabric having the above-described characteristics can be used as a single-use wet tissue or multiple-use wet tissue fabric.

First, bleached kraft pulp is a framework material for maintaining wet tissue fabric in a non-woven form.

Here, the bleached kraft pulp preferably has a diameter of 10 to 20 μm and a length of 1 to 4 mm. If it exceeds the above range, there is a problem that the tensile strength and absorbency are reduced, so it is preferable that the bleached kraft pulp be within the above range.

Bamboo pulp is expected to have an antibacterial effect. Among the components of bamboo, quinone, a bioactive substance, has excellent antibacterial effects. Bamboo is the tallest plant in the pollen family and is mainly distributed in Southeast Asia, including Korea and Japan. Worldwide, there are over 1,250 species in 47 genera.

Representative bamboo species are Wangdae, Somdae, Maengjongjuk, and Jorijidae. Among them, Maengjongjuk contains quinone derivatives, an antibacterial ingredient, and has a strong antibacterial effect.

Here, the bamboo pulp preferably has a diameter of 5 to 15 ㎛ and a length of 1 to 4 mm. If it exceeds the above range, there is a problem that the tensile strength and absorbency are reduced, so it is preferable that the bamboo pulp be within the above range.

Bleached kraft pulp and bamboo pulp are preferably mixed at a weight ratio of 90-110:5-15, and more preferably at a weight ratio of 98-102:10-12.

If the content of bleached kraft pulp is less than the above range, the tensile strength of the wet tissue fabric is lowered and the absorbency is low, making commercialization difficult. Conversely, if the content of bleached kraft pulp is greater than the above range, antibacterial properties are lowered, so bleached kraft pulp should be kept within the above range. Mixing is preferred.

In addition, if the content of bamboo pulp is less than the above range, the antibacterial performance is lowered, and conversely, if the content of the bamboo pulp is greater than the above range, the tensile strength and water absorption are lowered, so it is preferable that the bamboo pulp is mixed within the above range.

In addition, the fabric for wet tissues of the present invention preferably contains at least one of a dispersant, a temporary wet strength enhancer, a degassing agent, and a softener, and more preferably contains a dispersant, a temporary wet strength enhancer, and a degassing agent, and a dispersant, a temporary wet strength enhancer, and a degassing agent. It is most desirable to include all of a wet strength enhancer, a degassing agent, and a softening agent.

The dispersant functions to shorten the dissociation time of bleached kraft pulp and bamboo pulp and further suppresses their agglomeration, and may be a non-ionic surfactant, for example.

A temporary wet paper strength enhancer is an ingredient to temporarily increase strength when wet with water, and an example may be an amine-based temporary wet paper strength enhancer. Of course, it is possible to use a regular wet paper strength enhancer, but in this case, the flushable performance is poor, so it is better to use a temporary wet paper strength enhancer.

In the process of mixing each raw material and manufacturing sheet-shaped wet tissue fabric, large amounts of fine bubbles may be generated due to atmospheric air or reactions between raw materials. The generated air bubbles cause phalanges, which ultimately makes it impossible to form a sheet-shaped wet tissue fabric, or the air bubbles are destroyed during the drying process, greatly reducing the strength of the wet tissue fabric. In the present invention, a degassing agent is added to solve the above problems, and for example, it may be a higher alcohol-based degassing agent.

A softener is a substance to improve the flexibility of wet tissue fabric, and for example, it may be a quaternary ammonium-based softener.

On the other hand, when bleached kraft pulp, bamboo pulp, dispersant, temporary wet strength enhancer, deaerator and softener are all included, 90 to 110 parts by weight of bleached kraft pulp, 5 to 15 parts by weight of bamboo pulp, and 0.01 to 0.10 parts by weight of dispersant. , It is preferable to include 4 to 15 parts by weight of temporary wet paper strength enhancer, 0.01 to 0.25 parts by weight of deaerator, and 0.5 to 3 parts by weight of softener, 98 to 102 parts by weight of bleached kraft pulp, and 10 to 12 parts by weight of bamboo pulp. , it is more preferable to include 0.02 to 0.06 parts by weight of dispersant, 4 to 11 parts by weight of temporary wet strength enhancer, 0.01 to 0.15 parts by weight of deaerator, and 0.5 to 3 parts by weight of softener.

As a result, when bleached kraft pulp, bamboo pulp, dispersant, temporary wet strength enhancer, and degassing agent satisfy the above mixing range, the tensile strength (MD, longitudinal direction) required for wet tissue fabric is 25 N/cm or more, and the tensile strength (CD, It can meet 15N/cm or more (transverse direction), 7N/cm or more wet tensile strength (MD, longitudinal direction), and 5N/cm or more wet tensile strength (CD, transverse direction).

Continuing, the method for manufacturing the fabric for wet tissues according to the present invention will be described. 1 is a flowchart illustrating a method of manufacturing a fabric for wet tissues according to a preferred embodiment of the present invention.

As shown in Figure 1, the method for producing a fabric for wet tissues of the present invention includes a first step of preparing raw materials, a second step of preparing a raw material mixture by mixing the prepared raw materials, and fibrillation of the prepared raw material mixture. It includes a third step of laminating the fibrillated raw material mixture on the mesh belt, a fifth step of dehydrating the raw material mixture laminated on the mesh belt, and a sixth step of drying.

First, in the first step of preparing raw materials, a solvent, bleached kraft pulp and bamboo pulp, and, if necessary, a dispersant, a temporary wet strength enhancer, a degassing agent, and a softener are prepared.

Here, the solvent may be water as shown below so that each raw material can be mixed evenly.

In the second step of preparing the raw material mixture by mixing the prepared raw materials, bleached kraft pulp and bamboo pulp, and, if necessary, a dispersant, temporary wet strength enhancer, degassing agent, and softener are added to water as a solvent and stirred to form a slurry-like raw material mixture. This is the preparation stage.

Here, 9900 to 11,000 parts by weight of water, 90 to 110 parts by weight of bleached kraft pulp, 5 to 15 parts by weight of bamboo pulp, 0.01 to 0.10 parts by weight of dispersant, 4 to 15 parts by weight of temporary wet paper strength enhancer, 0.01 to 0.25 parts by weight of deaerator. , and softener are preferably mixed in a ratio of 1 to 3 parts by weight, 9900 to 11,000 parts by weight of water, 98 to 102 parts by weight of bleached kraft pulp, 10 to 12 parts by weight of bamboo pulp, 0.02 to 0.06 parts by weight of dispersant, temporary wet strength. It is more preferable to mix 4 to 11 parts by weight of the enhancer, 0.01 to 0.15 parts by weight of the deaerator, and 0.5 to 3 parts by weight of the softener.

Meanwhile, here, it is desirable to pre-heat the water, which is the solvent, to 25-45°C. This is because if the water temperature is lower than the above range, dispersibility and dehydration are poor, and if it is higher than the above range, it will cause strain on the mesh, etc. during lamination. , the water temperature of the solvent is preferably within the above range.

And the raw material mixture composed of the above mixing ratio is stirred at a speed of 900 to 1100 RPM for about 15 to 25 minutes to obtain a raw material mixture slurry.

Specific properties related to bleached kraft pulp, bamboo pulp, dispersant, temporary wet strength enhancer, deaerator, and softener have been described in detail previously, so redundant description will be omitted.

The third step is to fibrillate the prepared raw material mixture and fibrillate the bleached kraft pulp. In detail, fibrillation can be performed by passing the refiner once at a pressure of 130 to 160 N.

By carrying out such fibrillation, the strength of the fabric can be increased while reducing the amount of wet or temporary wet strength enhancer used.

In the fourth step of laminating the fibrillated raw material mixture on the mesh belt, the prepared slurry raw material mixture is layered on the mesh belt. In detail, it is supplied to a mesh belt moving at a speed of 25 to 45 m per minute, and the supply amount is preferably 5,000 to 8000 L/min.

The fifth step of dehydrating the raw material mixture laminated on the mesh belt is a step of first removing water, which is a solvent, by dehydrating the raw material mixture laminated on the mesh belt.

At this time, dehydration is performed by applying a primary vacuum the moment the raw material mixture is laminated on the mesh belt, and then a secondary vacuum is additionally applied to perform the dehydration process.

In the first vacuum dehydration process, 4 levels of vacuum pressure are applied: 0 to 5 cmHg in the 1st stage, 10 to 20 cmHg in the 2nd stage, 30 to 40 cmHg in the 3rd stage, and 50 to 65 cmHg in the 4th stage. In this process, bonding between fibers is induced through dehydration, resulting in the formation of a porous nonwoven fabric.

In the second vacuum dehydration process, vacuum pressure in the range of approximately 18 to 22 cmHg is applied to remove remaining moisture and at the same time make the bond between fibers more dense.

Finally, the sixth drying step is to completely remove residual moisture, and is achieved by sequentially passing a hot air dryer and a drum dryer. Specifically, after first drying in a hot air dryer operated at 100 to 170°C, more preferably 110 to 130°C, secondly after hot air drying at 135 to 145°C, and thirdly after hot air drying at 100 to 110°C. , the fourth process of passing it through a drum dryer at 135~145℃ is carried out sequentially.

Here, if drying is carried out at a high temperature at the beginning of the drying stage, drying occurs rapidly and shrinkage or ligaments occur. On the other hand, if the temperature is too low, the binder fibers are not completely bonded, and the residual moisture after winding is high, which has negative effects such as fluffing or weakening of bonding in the subsequent process. As described above, from the first drying to the fourth drying, It is preferable to dry under 4-stage drying conditions.

Thereafter, if necessary, an additional process of slitting with a slitting device and then storing may be performed.

Hereinafter, the present invention will be described in more detail through examples and experimental examples. However, the following examples and experimental examples only illustrate the present invention, and the content of the present invention is not limited to the following examples and experimental examples.

<Example>

Example 1

In 10,000 L of water heated to 30°C, 100 kg of bleached kraft pulp with an average diameter of 10 to 20㎛ and an average length of 1 to 4 mm, 11 kg of bamboo pulp with an average diameter of 5 to 15 μm and an average length of 1 to 4 mm, A raw material mixture was prepared by mixing 0.05 kg of nonionic surfactant, 10 kg of amine-based temporary wet strength enhancer, 1 kg of softener, and 0.1 kg of high-alcohol-based degassing agent and stirring for about 20 minutes.

The prepared raw material mixture was passed through a refiner once at a pressure of 140 to 145 N to fibrillate so that the freeness was in the range of 500 to 550 CSF, and then the prepared raw material mixture was laminated on a microfiber mesh belt. At this time, the transport speed of the mesh belt was 35 m/min, and the supplied raw material mixture was maintained at 6,500 L/min.

In addition, as soon as the raw material mixture is stacked on the mesh belt, the first stage of natural dehydration is performed with a vacuum pressure of 0 cmHg, followed by the first dehydration with a vacuum pressure of 10 cmHg in the second stage, the vacuum pressure of 30 cmHg in the third stage, and the vacuum pressure of 50 cmHg in the fourth stage. did. After the first dehydration, the second dehydration was performed at a vacuum pressure of 20 cmHg.

Finally, the remaining moisture is removed by first drying in a hot air dryer operated at 110℃~130℃, second drying at 135~145℃, third drying at 100~110℃, and passing through a drum dryer at 135~145℃. Fabric for wet tissues was manufactured.

Example 2

Wet tissue fabric was manufactured under the same conditions as in Example 1, except that the nonionic surfactant was changed to 0.025 kg.

Example 3

Fabric for wet tissues was manufactured under the same conditions as Example 1, except that the amine-based temporary wet strength enhancer was changed to 5 kg.

Example 4

Wet tissue fabric was manufactured under the same conditions as in Example 1, except that the high alcohol-based degassing agent was changed to 0.05 kg.

<Comparative example>

Comparative Example 1

The raw material mixture is 10,000L of water, 106kg of bleached kraft pulp with an average diameter of 10~20㎛ and an average length of 1~4㎜, 6kg of bamboo pulp with an average diameter of 5~15㎛ and an average length of 1~4㎜, and non-ionic Wet tissue fabric was manufactured under the same conditions as in Example 1, except that it consisted of 0.05 kg of surfactant, 10 kg of temporary wet strength enhancer, 1 kg of softener, and 0.1 kg of high alcohol-based degassing agent.

Comparative Example 2

Fabric for wet tissues was manufactured under the same conditions as Example 1, except that the bleached kraft pulp was changed to 89 kg and the bamboo pulp was changed to 22 kg.

Comparative Example 3

Fabric for wet tissues was manufactured under the same conditions as Example 1, except that the bleached kraft pulp was changed to 78 kg and the bamboo pulp was changed to 33 kg.

Comparative Example 4

Fabric for wet tissues was manufactured under the same conditions as Example 1, except that the bleached kraft pulp was changed to 67 kg and the bamboo pulp was changed to 44 kg.

Comparative Example 5

Fabric for wet tissues was manufactured under the same conditions as Example 1, except that the bleached kraft pulp was changed to 56 kg and the bamboo pulp was changed to 56 kg.

water (L) bleached kraft pulp
(kg) Bamboo Pulp (kg) dispersant
(kg) Temporary moisturizing strength enhancer
(kg) softener
(Kg) degassing agent
(kg) Example 1 10,000 100 11 0.05 10 One 0.1 Example 2 10,000 100 11 0.025 10 One 0.1 Example 3 10,000 100 11 0.05 5 One 0.1 Example 4 10,000 100 11 0.05 10 One 0.05 Comparative Example 1 10,000 106 6 0.05 10 One 0.1 Comparative Example 2 10,000 89 22 0.05 10 One 0.1 Comparative Example 3 10,000 78 33 0.05 10 One 0.1 Comparative Example 4 10,000 67 44 0.05 10 One 0.1 Comparative Example 5 10,000 56 56 0.05 10 One 0.1

<Experimental example>

The physical properties of the wet tissue fabrics prepared in Examples 1 to 4 and Comparative Examples 1 to 5 were measured, and the results are shown in Table 2 below.

For the basis weight, more than 10 samples of 100㎠ were collected according to the TAPPI T 410 standard, the weight of each was measured, the average value was calculated, and this was corrected (corrected value x 100) to measure the basis weight.

The thickness of the nonwoven fabric was measured using a thickness gauge according to the TAPPI T 411 standard, the tensile strength was measured according to the KS K 0743 standard, and the wet tensile strength was measured according to the ASTM D 828 standard.

The antibacterial test was conducted according to KSK 0693-2001 using two types of Staphylococcus aureus and Klebsiella.

At this time, Staphylococcus aureus had preservation number ATCC 6538p, pneumococcus had preservation number ATCC 4352, and the inoculum concentration for both species was 1.0 * 10 ⁵ cells/ml.

basis weight
(g/㎡) thickness
(㎜) tensile strength
(MD, longitudinal direction)
(N/cm) tensile strength
(CD, horizontal direction)
(N/cm) wet tensile strength
(MD, longitudinal direction)
(N/cm) wet tensile strength
(CD, horizontal direction)
(N/cm) antibacterial
(%) Example 1 42 0.16 25.4 15.8 7.8 5.4 99.9 Example 2 43 0.15 25.1 15.2 7.1 5.1 99.9 Example 3 41 0.16 25.5 15.1 7.3 5.0 99.9 Example 4 42 0.15 25.1 15.9 7.1 5.4 99.9 Comparative Example 1 43 0.16 23.8 13.5 5.5 3.5 99.9 Comparative Example 2 43 0.16 22.4 12.3 4.8 3.1 99.9 Comparative Example 3 41 0.15 20.4 11.1 4.3 2.5 99.9 Comparative Example 4 42 0.15 18.5 10.2 3.5 2.3 99.9 Comparative Example 5 41 0.15 16.5 8.9 2.9 1.8 99.9

As summarized in Table 2, the wet tissue fabrics manufactured by the manufacturing methods of Examples 1 to 4 of the present invention had a basis weight of 41 to 43 g/m2, a thickness of 0.15 to 0.16 mm, and a tensile strength (MD, longitudinal direction) of 25.1 to 25.1. 25.5N/cm, tensile strength (CD, transverse direction) 15.1~15.9N/cm, wet tensile strength (MD, longitudinal direction) 7.1~7.8N/cm, wet tensile strength (CD, transverse direction) 5.0~5.4N/ ㎝, it can be seen that the antibacterial activity is excellent at 99.9%.

On the other hand, the wet tissue fabric manufactured by the manufacturing method of Comparative Examples 1 to 5, which has a lower content of bleached kraft pulp and a higher content of bamboo pulp compared to the Example, has a tensile strength (MD, longitudinal direction) of 16.5 to 23.8 N/cm. The tensile strength (CD, transverse direction) was only 8.9 to 13.5 N/cm.

In addition, the wet tensile strength (MD, longitudinal direction) was 2.9~5.5N/cm, and the wet tensile strength (CD, transverse direction) was 1.8~3.5N/cm, which were not suitable as a product.

So far, the present invention has been examined focusing on its preferred embodiments. A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than the foregoing description, and equivalent scopes should be construed as included in the present invention.

Claims (10)

Contains biodegradable bleached kraft pulp, bamboo pulp, dispersant, temporary wet strength enhancer, deaerator and softener,
90 to 110 parts by weight of bleached kraft pulp, 5 to 15 parts by weight of bamboo pulp, 0.01 to 0.10 parts by weight of dispersant, 4 to 15 parts by weight of temporary wet paper strength enhancer, 0.01 to 0.25 parts by weight of deaerator, and 0.5 to 3 parts by weight of softener. Fabric for wet tissues, characterized in that it is included in a ratio.
delete delete According to paragraph 1,
The bleached kraft pulp has a diameter of 10 to 20 μm and a length of 1 to 4 mm,
The bamboo pulp has a diameter of 5 to 15 μm and a length of 1 to 4 mm,
The dispersant is a nonionic surfactant,
The temporary wet strength enhancer is an amine type,
The degassing agent is a higher alcohol type,
Fabric for wet tissues, characterized in that the softener is a quaternary ammonium type.
According to paragraph 1,
A fabric for wet tissues, characterized in that it satisfies the longitudinal tensile strength of 25 N/cm or more, the transverse tensile strength of 15 N/cm or more, the longitudinal wet tensile strength of 7 N/cm or more, and the transverse wet tensile strength of 5 N/cm or more.
A first step of preparing raw materials;
A second step of preparing a raw material mixture by mixing the prepared raw materials;
A third step of fibrillating the prepared raw material mixture;
A fourth step of laminating the fibrillated raw material mixture on a mesh belt;
A fifth step of dehydrating the raw material mixture laminated on the mesh belt,
The raw materials include biodegradable bleached kraft pulp, bamboo pulp, dispersant, temporary wet strength enhancer, deaerator and softener,
In the first step, 9,900 to 11,000 parts by weight of water, 90 to 110 parts by weight of bleached kraft pulp, 5 to 15 parts by weight of bamboo pulp, 0.01 to 0.10 parts by weight of dispersant, 4 to 15 parts by weight of temporary wet paper strength enhancer, and 0.01 parts by weight of deaerator. A method of manufacturing a fabric for wet tissues, characterized in that it is prepared at a ratio of ~0.25 parts by weight and a softener at a ratio of 0.5 to 3 parts by weight.
delete delete According to clause 6,
In the third step, a method of producing a fabric for wet tissues, characterized in that fibrillation is performed by applying a pressure in the range of 130 to 160 N.
According to clause 6,
The bleached kraft pulp has a diameter of 10 to 20 μm and a length of 1 to 4 mm,
The bamboo pulp has a diameter of 5 to 15 μm and a length of 1 to 4 mm,
The dispersant is a nonionic surfactant,
The temporary wet strength enhancer is an amine type,
The degassing agent is a higher alcohol type,
A method of manufacturing a fabric for wet tissues, characterized in that the softener is a quaternary ammonium type.