KR101155115B1 - 3layer nonwoven fabric and method for manufacturing the same g - Google Patents

Abstract

The present invention is a three-layered nonwoven fabric of a laminated structure manufactured by a spunlace process in a state in which a fiber layer made of natural fibers is interposed between both fiber layers made of any one or both of regenerated fibers and synthetic fibers, and a method of manufacturing the same. The method of manufacturing a three-layer nonwoven fabric according to the present invention comprises: a first fiber forming step of putting one or both of recycled fibers and synthetic fibers into a first carding machine and carding; A second fiber forming step of putting any one of regenerated fibers and synthetic fibers, or both at the same time into a second carding machine and treating the card; A laminated fiber forming step of laminating such that the third fiber made of natural fibers is interposed between the first fiber and the second fiber; And a laminated nonwoven fabric forming step of forming a laminated nonwoven fabric by spraying high pressure water with a water jet on the laminated fiber. The three-layer nonwoven fabric produced by such a manufacturing method is provided.

Description

3-layer nonwoven fabric and its manufacturing method {3LAYER NONWOVEN FABRIC AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a three-layer nonwoven fabric and a method for manufacturing the same, and more particularly, a spunlace in a state in which a fiber layer made of natural fibers is interposed between both fiber layers made of any one or both of regenerated fibers and synthetic fibers. The present invention relates to a three-layer nonwoven fabric having a laminated structure manufactured through a spunlace process and a method of manufacturing the same.

Nonwoven fabrics are used in various applications in various fields, such as living tissues such as wet wipes, kitchen towels, cleaning towels, industrial uses such as semiconductor wipers, surgical surgical clothing, surgical caps, hospital bedspreads, and hospital pillows.

As can be seen from the above use, the nonwoven fabric is regarded as a hygiene and absorption function that is particularly important in terms of function. And because it is in direct contact with human skin, it is also required to feel good.

In view of this functional aspect, a nonwoven fabric which is often manufactured by a spunlace process is used. The spunlace process refers to a method of forming a nonwoven fabric by spraying high pressure water with a water jet on a fiber web formed by carding in a carding machine to entangle the fibers.

Rayon or polyester (PET) is mainly used as a raw material of the nonwoven fabric. Each of these raw materials has advantages and disadvantages. Specifically, rayon has an absorbency that is superior to polyester, but has limitations and is less durable than polyester. On the other hand, polyester has a tough advantage, but has a problem of poor absorbency.

On the other hand, the nonwoven fabric may form a concave-convex pattern on the surface of the nonwoven fabric in order to impart a sense of volume to make it easy to pick up by hand and to wipe off dirt effectively.

As an example of a method of manufacturing a nonwoven fabric to form a conventional uneven pattern may be registered Patent No. 10-0728784.

As can be seen in the registered patent, the step of forming the concave-convex pattern on the conventional non-woven fabric is made of post-processing after finishing the drying step after most of the non-woven fabric forming step, while also passing through the process of pressing through the embossing roll in a specific method Mostly, the uneven pattern is formed.

In this case, a portion of the nonwoven fabric pressurized by the uneven surface formed on the embossing roll has a problem that the tensile force acts locally to make the fiber thinner. This problem causes a problem that the nonwoven fabric is easily torn, and also causes inconveniences in storage and use, such as the nonwoven fabric does not maintain a uniform shape as a whole and is easily wrinkled.

In addition, the uneven pattern to be formed is mostly a pattern in which convex and concave portions are formed in succession, and the uneven pattern is only able to obtain an effect in which the friction with the contact surface is slightly increased, and also helps the absorption function. There is a problem that does not perform an effective function such as giving.

The present invention has been made to solve the problems of the conventional nonwoven fabric and the manufacturing method described above, and proposes a nonwoven fabric having a structure laminated so that natural fibers are interposed into an inner layer of an outer layer made of regenerated fibers or synthetic fibers and a method of manufacturing the same. The purpose of the present invention is to provide a three-layer nonwoven fabric and a method for manufacturing the same, which have good strength in terms of absorbency and reduce manufacturing cost.

In addition, while the concave-convex pattern is to be formed by pre-processing, and the concave-convex pattern is transferred at the same time as the spunlace process, the purpose of the present invention is to propose a non-woven fabric and its manufacturing method does not decrease the strength of the non-woven fabric.

In addition, the purpose of the present invention is to propose a nonwoven fabric and a method for manufacturing the same, which are greatly improved in absorbency while cleaning the contact surface more cleanly due to the irregularities.

In order to solve the above problems, the manufacturing method of the three-layer nonwoven fabric according to a preferred embodiment of the present invention, either one of the recycled fibers and synthetic fibers, or both of them put into a carding machine (carding machine) A first fiber forming step of treating; A second fiber forming step of putting any one of regenerated fibers and synthetic fibers, or both at the same time into a second carding machine and treating the card; A laminated fiber forming step of laminating such that the third fiber made of natural fibers is interposed between the first fiber and the second fiber; And a laminated nonwoven fabric forming step of forming a laminated nonwoven fabric by spraying high pressure water with a water jet on the laminated fiber. The first fiber forming step includes a carding process formed by the first carding machine. A first nonwoven fabric forming step of forming a first nonwoven fabric by spraying high pressure water with a water jet on the first web is further included so that the first fiber is made of the first nonwoven fabric, or in the second fiber forming step, A second nonwoven fabric forming step of forming a second nonwoven fabric by spraying a high pressure water with a water jet to the second web formed by the carding process by the second carding machine is further included, wherein the second fiber is made of the second nonwoven fabric The hole pattern is formed on the first nonwoven fabric by the high pressure water sprayed from the water jet by the formation of the first nonwoven fabric under the pressurization of the first web by the first drum having the hole pattern formed on the outer circumferential surface thereof. The second nonwoven fabric forming step is performed in a state in which the second web is pressed by a second drum formed therethrough or with a hole pattern formed on an outer circumferential surface thereof, and a hole is formed in the second nonwoven fabric by high pressure water sprayed from a water jet. A hole pattern transfer step of forming a pattern is further included. The laminated nonwoven fabric forming step is performed in a state in which the laminated fiber is pressed by a third drum having an uneven pattern formed on an outer circumferential surface thereof. A concave-convex pattern transferring step is further included, wherein the concave-convex pattern formed on the outer circumferential surface of the third drum includes a plurality of half-dome portions including a curved surface and a vertical surface, and the concave-convex pattern transferring step The half dome pattern is transferred to the laminated nonwoven fabric.

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Meanwhile, the regenerated fiber is rayon, the synthetic fiber is polyester, and the natural fiber may be made of cellulose pulp.

In order to solve the above problems, the three-layer nonwoven fabric according to a preferred embodiment of the present invention, the first fiber layer made of any one, or both of regenerated fibers and synthetic fibers; A second fiber layer made of any one or both of regenerated fibers and synthetic fibers; And a third fibrous layer made of natural fibers, wherein the first fibrous layer is formed of a first nonwoven fabric having a hole pattern penetrated by high pressure water sprayed from the water jet, or the second fibrous layer is sprayed from the water jet. A second nonwoven fabric having a hole pattern penetrated by high pressure water, wherein the first fiber layer, the second fiber layer and the third fiber layer are laminated so that the third fiber layer is interposed between the first fiber layer and the second fiber layer. In the laminated nonwoven fabric is formed through a spunlace (spunlace) process, a half-dome-shaped concave-convex pattern including a curved surface and a vertical surface may be formed on the laminated nonwoven fabric.

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At this time, the regenerated fiber is rayon (Rayon), the synthetic fiber is polyester (PET), the natural fiber may be made of cellulose pulp (cellulose pulp).

According to the present invention, there is provided a method of manufacturing a three-layer nonwoven fabric having a laminated structure in which a natural fiber having excellent water absorption is interposed between a first fiber and a second fiber made of regenerated or synthetic fibers having excellent strength. A nonwoven fabric with good water absorption can be produced.

In addition, since the natural fiber is included, there is an advantage in terms of manufacturing cost compared to the method of manufacturing a nonwoven fabric made of simply synthetic fiber or regenerated fiber.

In addition, since the third fiber and the spunlace process in a state in which the hole pattern is formed on the first nonwoven fabric or the second nonwoven fabric, the third fiber is exposed through the hole pattern of the first fiber or the second fiber forming the outer layer. There is an advantage that the absorbency of the nonwoven fabric is further improved.

In addition, by having a process of transferring the uneven pattern at the same time as the spunlace process, even if the uneven pattern is formed on the nonwoven fabric has the advantage that the strength of the nonwoven fabric does not decrease.

In addition, by forming an uneven pattern on the laminated nonwoven fabric, it is possible to obtain an effect of wiping the contact surface more clearly, and of course, by forming the exposed portion of the above-described third fiber on the uneven portion, the absorbency can be further improved.

1 is a process schematic diagram illustrating a method for manufacturing a three-layer nonwoven fabric according to a first embodiment of the present invention.
FIG. 2 is a partial cross-sectional view of the first drum shown in FIG. 1. FIG.
3 is a process schematic diagram illustrating a method for manufacturing a three-layer nonwoven fabric according to a second embodiment of the present invention.
4 and 5 are partial cross-sectional views of the third drum shown in FIG.
6 is a cross-sectional view of a three layer nonwoven fabric according to the first embodiment of the present invention.
7 is a cross-sectional view of a three layer nonwoven fabric according to a second embodiment of the present invention.

A three-layer nonwoven fabric and a method of manufacturing the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The method of manufacturing a three-layer nonwoven fabric according to the first embodiment of the present invention includes a first fiber forming step, a second fiber forming step, a laminated fiber forming step, and a laminated nonwoven fabric forming step, and a process schematic diagram relating to such a manufacturing method is shown. 1 is shown.

In the first fiber forming step, using any one or both of the regenerated fibers or synthetic fibers as a raw material, the raw material is put into a first carding machine (110) and carded to form a first fiber to be.

As the regenerated fiber, rayon having good absorbency to some extent may be used, and as synthetic fiber, polyester (PET) having an advantage in strength may be used. Alternatively, both fibers may be simultaneously put into the first carding machine 110 so as to have the advantages of both fibers. Thus, the first fiber formed by carding one or both of the regenerated fiber and the synthetic fiber is made of a fibrous web (hereinafter referred to as the first web 101).

The second fiber forming step is a step of forming the second fiber while going through the same process as the first fiber forming step. In this case, the second fiber is also made of a fibrous web (hereinafter referred to as second web 311).

In the forming of the laminated fiber, the first fiber, the second fiber and the third fiber are laminated so that the third fiber is interposed between the first fiber and the second fiber. The third fiber is preferably made of natural fibers, for example, may be made of cellulose pulp.

Referring to the lamination process in detail, first, the first web 101 constituting the first fiber is discharged from the first carding machine 110 and then transferred by various transfer means (not shown), the first web in the transfer process The third fiber 211 is stacked on the 101. The third fiber 211 may be laminated on the first web 101 while being unwound in a state of being wound on the supply roll 210. The second web discharged from the second carding machine 310 onto the third fiber 211 in the process of the first web 101 and the third fiber 211 laminated in this way is transferred by a conveying means (not shown) ( 311) are stacked.

The laminated nonwoven fabric forming step is a step of forming the laminated nonwoven fabric 104 on the laminated fiber 103 while undergoing the spunlace process described above. That is, the first non-woven fabric, the second fibers and the third fibers are entangled with each other by injecting high-pressure water by a water jet onto the red fiber, thereby forming the laminated nonwoven fabric 104.

The laminated nonwoven fabric 104 thus formed is generally a three layer laminated structure. That is, while the third fiber is interposed between the first fiber and the second fiber, the first fiber and the second fiber become an outer fiber layer, and the third fiber becomes a three-layer laminated structure that becomes the inner fiber layer. At this time, the first fiber and the second fiber has a disadvantage in that the absorbency is inferior to the natural fiber according to the fiber described above, but has an advantage in terms of strength. On the other hand, the third fiber has a weak point in terms of strength compared to the first fiber and the second fiber in the characteristics of the natural fiber, but has a very excellent advantage in terms of absorbency. Therefore, the laminated nonwoven fabric 104 according to the present embodiment is not easily torn due to its strength in terms of the strength of the first fiber and the second fiber, and has excellent absorbency when used by the third fiber. In addition, in view of the fact that the nonwoven fabric is manufactured in the same volume, the case where the nonwoven fabric is made of the three-layer laminated nonwoven fabric 104 made of the raw material as described above by the manufacturing method of the present embodiment is simply made of polyester or rayon raw material. The manufacturing cost is far more advantageous than the case of the nonwoven fabric is made.

Meanwhile, the first nonwoven fabric forming step may be further included in the first fiber forming step, or the second nonwoven fabric forming step may be further included in the second fiber forming step. Alternatively, the first nonwoven fabric forming step and the second nonwoven fabric forming step may be further included in the first fiber forming step and the second fiber forming step.

In the first nonwoven fabric forming step and the second nonwoven fabric forming step, the first web 101 and the second nonwoven fabric are subjected to the above-described spunlace process, respectively, so that the first nonwoven fabric 102 includes: The second web 311 refers to the step of forming the second nonwoven fabric.

1 shows an example of a process in which the first nonwoven fabric forming step is further included only in the first fiber forming step as an example. That is, the first nonwoven fabric 102 is sprayed by the water jet 11 while the first web 101 discharged from the first carding machine 110 is wound around and transported to the first drum 120. The process of becoming is presented. In this case, the first fiber is made of a first nonwoven fabric 102. By passing the first web 101 through a spunlace process to bind the first web 101 first to form an integral first nonwoven fabric 102, the first fiber is simply made of the first web 101. It may have better properties in terms of strength than that. In addition, since the second spunlace process is performed while the subsequent laminated nonwoven fabric forming step is performed, the laminated nonwoven fabric 104 has a better binding force (strength) as a whole. As such, the first fiber may be subjected to the spunlace process once more to the first nonwoven fabric 102 that has undergone the spunlace process as shown in FIG. 1 so as to have more rigid strength through the plurality of spunlace processes. For this purpose, an additional drum 130 may be further provided, and the first nonwoven fabric 102 may be subjected to a water jet process by the water jet 12 once more in the process of being wound around the additional drum 130. .

As described above, the second nonwoven fabric forming step may be further included in the second fiber forming step. In this case, like the first web 101, the second web 311 may be subjected to a spunlace process in the process of being wound on the second drum (not shown) and the additional drum (not shown).

On the other hand, the hole pattern transfer step may be further included so that the hole pattern is formed through the first nonwoven fabric 102 formed through the first nonwoven fabric forming step. That is, a plurality of holes (holes) may be formed through the first nonwoven fabric 102. When the hole pattern is formed through the first nonwoven fabric 102, the first nonwoven fabric 102 is subjected to the laminated nonwoven fabric forming step. The third fiber 211 may be exposed through the hole formed in the through hole). In this way, by forming the exposed portion of the third fiber 211, the nonwoven fabric of the present embodiment can obtain a more excellent absorption effect in use by the characteristics of the third fiber 211 excellent in absorbing power.

Specifically, the hole pattern transfer step will be described. As shown in FIG. 2, the hole 121 pattern is formed on the outer circumferential surface of the first drum 120, and the first web 101 is formed on the first drum 120. In the process of being wound and transported while being wound in a pressurized state by the first drum 120, the high pressure water is injected into the water jet 11 in this process, the first web 101 is a first nonwoven fabric ( 102, and a plurality of hole patterns may be formed through the first nonwoven fabric 102.

The hole pattern forming step may be further included in the second nonwoven fabric forming step. In this case, although not shown, a hole pattern similar to that of the first drum 120 may be formed in the second drum.

3 is a process schematic diagram of a method for manufacturing a nonwoven fabric according to a second embodiment of the present invention. Unlike the first embodiment, the present embodiment further includes an uneven pattern transfer step when the laminated nonwoven fabric forming step is performed. Since other processes are the same as in the first embodiment, the description of the same reference numerals as those shown in FIG. 1 among the reference numerals shown in FIG. 3 will be replaced with the description of the first embodiment, and the first embodiment will be described below. Only the step of transferring the uneven pattern which is different from the above will be described in detail.

The uneven pattern transfer step is a step in which the uneven pattern is simultaneously transferred in the process of undergoing a spunlace process on the laminated fiber 103, that is, in the process of forming the laminated nonwoven fabric 104.

Specifically, the laminated fiber 103 is wound around the third drum 410 having a concave-convex pattern formed on the outer circumferential surface thereof and is transported while being pressed, and the water jet 13 is applied to the portion of the laminated fiber 103 pressed by the third drum 410. By spraying the water by), the laminated fiber 103 is transferred to the concave-convex pattern at the same time in the process of forming the laminated nonwoven fabric 104. That is, according to the present embodiment, the irregularities are not formed in the nonwoven fabric by post-processing as in the conventional nonwoven fabric manufacturing method, but the irregularities are formed by pre-processing. In particular, since the concave-convex pattern is formed at the same time during the spunlace process, even if the pressing by the concave-convex pattern of the third drum 410, the local tensile force is not applied to the laminated nonwoven fabric 104. Since the laminated fiber 103 is pressed by the uneven pattern of the third drum 410, the spunlace process of binding the fiber is performed. Thus, even if the uneven pattern transfer step is performed, the strength of the laminated nonwoven fabric 104 is reduced. The problem does not arise.

As an example of the uneven pattern formed in the third drum 410, an example in which a dome portion 411 is formed is illustrated in FIG. 4. The dome part 411 may be formed on the outer circumferential surface of the third drum 410 to form a concave-convex pattern. As another example, an example in which a half-dome portion 412 is formed is shown in FIG. 5. As the uneven pattern is formed in the third drum 410, the laminated nonwoven fabric 104 is formed by transferring the domed or half-domed uneven patterns 104a, 104b and FIGS. 6 and 7. By forming such an uneven pattern on the laminated nonwoven fabric 104, the nonwoven fabric of the present embodiment becomes more frictional with respect to the contact surface in use, so that the surface to be cleaned can be cleaned more cleanly. In particular, since the half-domed concave-convex pattern 104b has a curved surface 104c on one side, while the other side forms a vertical surface 104d, the half-domed concave-convex pattern 104b faces the vertical surface 104d in a direction to be polished to provide frictional force to the contact surface. This can be made larger, which can result in a much cleaner cleaning of the contact surface. At this time, the portion of the third fiber 211 exposed through the hole pattern formed on the first nonwoven fabric 102 or the second nonwoven fabric may be formed on the vertical surface 104d or adjacent to the vertical surface 104d of the half-dome irregularities. As a result, it was confirmed that the absorbency is also better.

Meanwhile, reference numeral 500 shown in FIGS. 1 and 3 denotes a drying means, and various drying means known as such drying means may be presented, and after the step of forming the laminated nonwoven fabric using the drying means, the laminated nonwoven fabric ( Drying 104 may be further included.

In addition, reference numeral 600 denotes a slitting and rolling means, which also known various slitting and rolling means can be presented, by using the laminated nonwoven fabric 104 subjected to the drying step described above Cutting the roll to a certain size may be further included.

In addition, reference numeral 413 shown in FIGS. 4 and 5 indicates that the sprayed water is absorbed into the third drum 410 when the water is jetted by the water jet 13 to the third drum 410. In order to represent the hole (hole) formed in the third drum (410). In this case, an absorption means (not shown) may be built in the third drum 410 to suck water into the motor to facilitate water absorption.

6 and 7 show cross-sectional views of the three-layer nonwoven fabric according to the first and second embodiments of the present invention.

The three-layer nonwoven fabric according to the first embodiment shown in FIG. 6 is manufactured by the manufacturing method described with reference to FIG. 4, and shows an example in which the above-described domed irregularities 104a pattern is formed on the laminated nonwoven fabric 104.

In addition, the three-layer nonwoven fabric according to the second embodiment shown in FIG. 7 is manufactured by the manufacturing method described with reference to FIG. 5 and shows an example in which the above-described half-domed irregularities 104b pattern is formed on the laminated nonwoven fabric 104. have.

As another embodiment, a three-layer nonwoven fabric manufactured by the method for manufacturing a three-layer nonwoven fabric according to the first embodiment of the present invention described above may be presented, in which case the three-layer nonwoven fabric is not shown, but it is shown in FIGS. As shown in FIG. 7, the uneven pattern is formed in a flat type.

As the present invention can be variously modified by those skilled in the art without departing from the scope of the claims claimed in the claims, the protection scope of the present invention is limited to the specific preferred embodiments described above It doesn't work.

11,12,13; Waterjet 101; First web
102; First nonwoven fabric 103; Laminated fiber
104; Laminated nonwoven fabric 110; First carding machine
120; First drum 121; hall
130; Additional drum 210; Feeding roll
211; Third fiber 310; Second carding machine
311; Second web 410; 3rd drum
411; Dome portion 412; Half Dome

Claims (10)

A first fiber forming step of putting one or both of regenerated fibers and synthetic fibers into a carding machine and treating the card;
A second fiber forming step of putting any one of regenerated fibers and synthetic fibers, or both at the same time into a second carding machine and treating the card;
A laminated fiber forming step of laminating such that the third fiber made of natural fibers is interposed between the first fiber and the second fiber; And
A laminated nonwoven fabric forming step of forming a laminated nonwoven fabric by spraying high pressure water with a water jet on the laminated fiber;
In the first fiber forming step, a first nonwoven fabric forming step of forming a first nonwoven fabric by spraying a high pressure water with a water jet to the first web formed by the carding treatment by the first carding machine further comprises the first fiber Is made of the first nonwoven fabric, or
In the second fiber forming step, a second nonwoven fabric forming step of forming a second nonwoven fabric by spraying a high pressure water with a water jet to the second web formed by the carding treatment by the second carding machine further comprises the second fiber Is made of the second nonwoven fabric,
The first nonwoven fabric forming step is performed in a state in which the first web is pressed by a first drum having a hole pattern formed on an outer circumferential surface thereof, and a hole pattern is formed through the first nonwoven fabric by high pressure water sprayed from a water jet. Or the second nonwoven fabric forming step is performed in a state in which the second web is pressed by the second drum having a hole pattern formed on an outer circumferential surface thereof, and the hole pattern penetrates the second nonwoven fabric by high pressure water sprayed from a water jet. Further formed hole pattern transfer step,
The laminated nonwoven fabric forming step is performed in a state in which the laminated fiber is pressed by a third drum having an uneven pattern formed on an outer circumferential surface, and the uneven pattern transfer step of transferring the uneven pattern to the laminated nonwoven fabric is further included.
The uneven pattern formed on the outer circumferential surface of the third drum is composed of a plurality of half-dome portions including a curved surface and a vertical surface, and the half-dome pattern is transferred to the laminated nonwoven fabric by the uneven pattern transfer step. The manufacturing method of the 3-layer nonwoven fabric made into them.
delete delete delete delete The method according to claim 1,
The regenerated fiber is a rayon (Rayon), the synthetic fiber is a polyester (PET), the natural fiber is a manufacturing method of a three-layer nonwoven fabric, characterized in that the cellulose pulp (cellulose pulp).
A first fiber layer composed of any one or both of regenerated fibers and synthetic fibers;
A second fiber layer made of any one or both of regenerated fibers and synthetic fibers; And
Includes a third fiber layer made of natural fibers,
The first fiber layer is made of a first nonwoven fabric through which a hole pattern is penetrated by high pressure water sprayed from a water jet, or
The second fiber layer is made of a second nonwoven fabric through which a hole pattern is penetrated by high pressure water sprayed from a water jet,
It is made of a laminated non-woven fabric formed by a spunlace process in a state in which the first fiber layer, the second fiber layer and the third fiber layer is laminated so that the third fiber layer is interposed between the first fiber layer and the second fiber layer,
The three-layer nonwoven fabric is characterized in that the half-domed concave-convex pattern is formed on the laminated nonwoven fabric comprising a curved surface and a vertical surface.
delete delete The method of claim 7,
The regenerated fiber is a rayon (Rayon), the synthetic fiber is a polyester (PET), the natural fiber is a three-layer nonwoven fabric, characterized in that the cellulose pulp (cellulose pulp).

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