KR100245583B1 - The manufacturing method of non-woven textile using the natural fiber - Google Patents

Abstract

The present invention relates to a method for producing a nonwoven fabric using natural fibers to produce a nonwoven fabric having a certain strength and volume using natural fibers such as silk, cotton, and wool.

The present invention relates to a low melting point fiber 90 to 30 parts by weight of a natural fiber fiber yarn having a predetermined length; Samyang Co., Ltd.} 10 to 70 parts by weight of the mixing process, mixing the mixed yarn evenly so as not to have a direction to form a predetermined standard, the carded mixed yarn 0.5 to 100 ℃ while supplying dry hot air of 100 ~ 170 ℃ It is characterized in that it consists of a molding process for pressing for 20 to 120 seconds under a pressure of ~ 3.5kg / cm ² , a shearing process for cutting the molded mixed yarn to a predetermined standard, it is possible to produce a non-woven fabric of various uses using natural fibers It can be used for products that are closely related to the human body, and the production process can be easily automated, enabling mass production of high quality products, and to produce natural nonwoven fabrics at a low cost equivalent to the production cost of artificial nonwoven fabrics. One effective invention.

Description

Method of manufacturing nonwoven fabric using natural fibers

The present invention relates to a method for producing a nonwoven fabric using natural fibers to produce a nonwoven fabric having a certain strength and volume using natural fibers such as silk, cotton, and wool.

Non-woven fabric is used as a term encompassing all kinds of fabrics produced without weaving, but in the present invention, nonwoven fabrics having a certain thickness are used for medical or sanitary nonwoven fabrics and beddings, and the like. Nonwoven fabrics are generally made of polyester fibers, which are chemical fibers, and this is due to the convenience of manufacturing and matching strength requirements.

Such conventional inventions include "Laminated Nonwoven Fabrics and Methods for Manufacturing the Same" in Patent Publication Nos. 95-4162, "Method for Manufacturing Nonwoven Webs" in Nos. 95-9487, and "With Opacity" in Nos. 96-87; No. 96-1406, "Bulky nonwoven fabric," and the like, "Laminated nonwoven fabric and its manufacturing method" of the Patent Publication No. 95-4162, the melt blown chemical fibers and spunbonded chemical fibers are laminated to a certain condition to feel The method for producing a nonwoven web of No. 95-9487 is to make the mixing uniform by using a device for simultaneously melting and spinning a general chemical yarn and a composite yarn. The opaque characteristic of "~" is to adjust the mixing ratio of the specific chemical company in the chemical company to increase the strength and flexibility of the nonwoven fabric produced at the same time, the "bulky nonwoven fabric" of No. 96-1406 is a high melting point chemical yarn and low melting But a mixture of laminated Chemical Co. so as to varying the mixing ratio according to the stacking position is a bulky so as to improve the strength and at the same time.

And, for example, the process of manufacturing mattresses from chemical fibers is generally the most preferred polyester fiber, which is performed by waving ⇒ cutting ⇒ carding ⇒ pressing. It is a process for imparting bending to the polyester fiber of the upper layer to impart bulkiness during weaving, cutting is a process of cutting the fiber yarn to a predetermined length, carding is a process of uniformly arranging the fiber yarn to a predetermined standard, Finally, in the pressing process, heating and pressurization are performed, in which a bond is added to obtain a predetermined strength.

By the way, the product made of chemical fiber as described above is economical, but inferior to natural fiber in terms of breathability, heat retention, and bulk holding ability, and is harmless to human body, especially when used in beddings and diapers, etc. for use in contact with the human body. The use of natural fibers is urgently needed. In addition, bonds used for strength maintenance are harmful to the human body and should be avoided.

However, natural fibers (for example, silk, cotton, wool, etc., hereinafter referred to as "natural fibers") have excellent performance but are less in strength than chemical fibers in order to produce a certain thickness standard so as to have bulkiness. There is a decisive problem that it is difficult to produce bedding, such as, and until now, such a bulk material development using natural fibers has not been made at all.

The present invention has been completed to solve the above problems to provide a process that can be produced in the required specification and strength while having bulkiness even natural fibers, which is a natural process by mixing a low melting point fibers in a predetermined process According to the drawings, the heating and pressure are described in more detail as follows.

1 is a process conceptual diagram of the present invention.

2 is another process conceptual diagram of the present invention.

1 is a process flow diagram conceptually illustrating the treatment process of the present invention in order.

The present invention relates to a low melting point fiber 90 to 30 parts by weight of a natural fiber fiber yarn having a predetermined length; Samyang Co., Ltd.} 10 to 70 parts by weight of the mixing process, mixing the mixed yarn evenly so as not to have a direction to form a predetermined standard, the carded mixed yarn 0.5 to 100 ℃ while supplying dry hot air of 100 ~ 170 ℃ It is characterized by consisting of a molding step of pressing for 20 to 120 seconds under a pressure of ~ 3.5kg / cm ² , a shearing step of cutting the molded mixed yarn to a predetermined standard.

2 is a process flow diagram conceptually illustrating another process of the present invention.

In the above configuration, a needle punching step of inserting a carded mixed yarn between the carding process and the molding process with a myriad of needles is inserted, the molding process is pressed by a roll conveyor or a belt conveyor consisting of a pair of upper and lower sides. It is more preferable if it is set.

In the above configuration, it is more preferable that the molding step is pressurized by a press in a die of a predetermined volume.

The preferred embodiment of the present invention made as described above will be described by way of example, which describes one embodiment of the technical scope of the present invention, which is not intended to limit the scope thereof.

Example 1

1. Wash and dry yarn wool, and add 5% by weight of low melting fiber (denier 4 fiber length 51mm) to the total weight of hopper feeder; Mix uniformly by using the machine manufacturing company.

2. Put the mixed yarn into a known carding machine.

3. The carded mixed yarn is introduced into the belt conveyor press under a hot air of 90 ° C. under a pressure of 0.4 kg / cm ² and passed for 90 seconds.

4. The compressed yarn was finished by cutting to 1000 × 3000mm (W × L) standard.

The produced mattress material is 1000 mm thick and the results are shown in Table 2.

EXAMPLES 2-18

Working in the same manner as in Example 1, except that the treatment conditions were treated under the conditions shown in Table 1.

Mixing ratio (ratio of low melting point fiber) Pressure (kg / cm ² ) Heating temperature (℃) Pressurization time (second) Example 2 25% by weight 0.4 90 90 3 40 weight% 0.4 130 60 4 55 weight% 0.4 130 60 5 70 weight% 0.4 180 30 6 85 weight% 0.4 180 15 7 5% by weight 2.6 130 60 8 25% by weight 2.6 180 30 9 40 weight% 2.6 90 150 10 55 weight% 2.6 130 60 11 70 weight% 2.6 180 30 12 85 weight% 2.6 130 60 13 5% by weight 3.8 200 30 14 25% by weight 3.8 130 60 15 40 weight% 3.8 90 90 16 55 weight% 3.8 180 30 17 70 weight% 3.8 130 60 18 85 weight% 3.8 90 90

The nonwoven fabric prepared according to the above example was cut to a size of 2.5 × 4 × 10 cm (W × H × D) to test tensile strength, heat retention, and the like, thereby obtaining the results shown in Table 2.

Tensile Strength (kg / cm ² ) Permeability (cc / cm ² / sec) Modulus (%) Thermal insulation (%) evaluation Longitudinal direction Width direction Example 1 1.01 1.32 37.1 11.3 75.7 × 2 2.53 2.81 37.5 15.7 74.4 × 3 3.11 3.42 38.2 18.3 70.6 × 4 3.53 3.72 38.9 32.7 72.3 × 5 4.48 4.54 34.6 48.4 67.1 × × 6 3.28 3.51 35.9 43.2 63.8 × 7 4.02 4.35 35.8 56.3 79.9 Bedding 8 5.38 5.44 34.3 63.0 77.4 × 9 8.02 8.15 38.2 58.2 70.7 Bedding 10 4.81 5.9 37.7 57.1 74.0 Bedding 11 5.99 6.72 36.1 65.5 71.9 Bedding 12 8.13 8.5 38.7 66.4 68.2 × 13 10.01 10.66 30.3 65.7 88.5 × 14 9.89 10.04 33.8 65.8 87.7 × 15 12.34 13.65 34.2 63.1 86.6 × 16 11.27 12.31 34.9 64.7 85.7 × 17 13.25 14.68 35.8 68.4 82.5 lagging 18 16.71 17.01 36.2 63.7 72.3 lagging

The tensile strength

The tensile strength of the nonwoven fabric KS K 0520, CRE yes were tested with respect to both the longitudinal and transverse directions geubeop, there can be seen that the generally proportional to the mixing ratio, by using application-9.0kg / cm ² or more when industrial insulation, such as It can be used in the case of 3.5kg ~ 9.0kg / cm ² , and it can be used in the bedclothes, futons, etc. When it is less than 3.5kg / cm ^2, it can be used for diapers or filters. In cm ² or less, it is difficult to commercialize, and in this Example, all were commercialized.

Transmittance

The air permeability is proportional to the mixing ratio and somewhat inversely proportional to the pressing force. The test was performed by the method of KS K 3014, and the rating of 35cc / cm ² / sec or more was passed in the beddings which were in contact with the human body.

Modulus

Resilience modulus refers to the durability of the product as its ability to restore to its original state when removed after application of a load, which was tested by the method of FTM 3001 and determined to pass 55% or more.

Warmth

Thermal insulation is the property most needed in beddings and thermal insulation materials, it is inversely proportional to the mixing ratio and proportional to the pressing force, and was tested by KS K 0466, KS K 0560 and the constant temperature method, and determined to pass 70% or more.

evaluation

Since all of the above four items were passed the strength, if none of the three items were excluded, they were rejected. If all of the items were passed, the usages were classified according to the strength, and the results are shown in the evaluation of Table 2.

As derived from the evaluation, it was found that the low-melting fiber mixed with the natural yarn satisfies all of the above evaluation items when mixing about 10 to 70 parts by weight of the whole yarn, and the pressing force was 0.5 to 3.5 kg / cm ² . The required physical properties can be obtained, and at a heating temperature of 90 ° C, adhesion is not performed properly no matter how much pressurization time is applied (the elasticity rate drops sharply), so that the film of low melting point fibers starts to melt at 100 ° C to 170 ° C. Above 180 ° C, the permeability drops sharply due to the fixation of natural fibers), and it is found that it is desirable to control the pressurization time in inverse proportion to the heating temperature.

The invention described in claim 2 of the present invention adds a needle punching process to the process of claim 1 so that the crossing angle between the fiber yarns can be arbitrarily adjusted to improve the tensile strength in an arbitrary direction, and furthermore, the molding process. A pair of roll conveyors or belt conveyors were used to automatically produce continuous nonwoven fabrics in the longitudinal direction.

In addition, the invention described in claim 3 of the present invention allows the molding process to be carried out in the die of the press to easily produce the nonwoven fabric to be produced under high pressure.

As described above, the present invention enables the production of non-woven fabrics for various uses using natural fibers, which can be usefully used in products having a close relationship with the human body, and the production process can be easily made for mass production of high quality products. It is an effective invention that can produce a natural nonwoven fabric at a low cost corresponding to the production cost of artificial nonwoven fabric.

Claims (3)

Low melting fiber with respect to 90 to 30 parts by weight of a natural salt fiber yarn having a predetermined length {Low melting polyester; Samyang Co., Ltd.} 10 to 70 parts by weight of the mixing process, mixing the mixed yarn evenly so as not to have a direction to form a predetermined standard, the carded mixed yarn 0.5 to 100 ℃ while supplying dry hot air of 100 ~ 170 ℃ A method of producing a nonwoven fabric using natural fibers, comprising a molding step of pressing for 20 to 120 seconds under a pressure of ˜3.5 kg / cm ² and a shearing step of cutting the molded mixed yarn to a predetermined standard. The method of claim 1, wherein a needle punching step of inserting a carded mixed yarn between the carding process and the molding process with a myriad of needles is inserted, and the molding process is pressurized by a roll conveyor or a belt conveyor composed of a pair of upper and lower sides. Method of producing a nonwoven fabric using natural fibers. The method for producing a nonwoven fabric using natural fibers according to claim 1, wherein the forming step is pressurized in a die of a predetermined volume.

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