Polylactic acid blended non-woven fabric having improved flexibility and method for preparing same

A technology of polylactic acid and non-woven fabrics, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of not paying attention to the improvement of the mechanical or physical properties of mixed textile fabrics, and the lack of research, so as to reduce friction coefficient, increased flexibility, and increased productivity

Active Publication Date: 2016-05-04
TORAY ADVANCED MATERIALS KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the main focus of the existing polylactic acid mixed non-woven fabric is to improve the spinnability formed by the resin mixing

Method used

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  • Polylactic acid blended non-woven fabric having improved flexibility and method for preparing same

Examples

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Embodiment approach

[0052] Next, the nonwoven fabric of the present invention will be specifically described by way of examples. This example is merely an example for describing the present invention more specifically, and it should be understood by those skilled in the art that the scope of the present invention is not limited to this example.

[0053] In addition, in the following examples and comparative examples, fibers were produced using various amounts of polylactic acid, polypropylene, dispersant, and softening agent. The polylactic acid polymer (PLA) was obtained from Minneapolis, Minnesota, U.S.A. Obtained by (Natureworks) where Liss is located, the melt flow index (MI: MeltIndex) is 15 to 30g / 10 points, the polypropylene polymer (PP) obtains the trade name SFR-171H from Hunan Petrochemical, and the melt flow index (MI : MeltIndex) is 35g / 10 minutes, has the melting temperature of about 160 ℃, and the dispersing agent obtains the trade name DYNARON8630P from JSR Corporation (JSR Corpora...

Embodiment 1

[0055] 20% by weight of polylactic acid, 3% by weight of dispersant, 1% by weight of softener, and 76% by weight of polypropylene resin were put in, melt-spun and fibrillated, stretched on a porous conveyor belt, and a 40gsm fiber was manufactured. Table 1 shows the physical properties of the polylactic acid / polypropylene nonwoven fabric and the produced nonwoven fabric measured.

Embodiment 2

[0057] A nonwoven fabric was manufactured in the same manner as in Example 1 except that 20% by weight of polylactic acid, 3% by weight of a dispersant, and 74% by weight of a softening agent 3% by weight of a polypropylene resin were added, and the manufactured nonwoven fabric was measured. properties and are shown in Table 1 below.

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Abstract

The present invention relates to a polylactic acid blended non-woven fabric having improved flexibility, and a method for preparing same. The polylactic acid blended non-woven fabric having improved flexibility of the present invention is characterized in that: the non-woven fabric prepared by weaving polylactic acid and a polypropylene blend includes 10 to 80 wt% of polylactic acid, 10 to 89 wt% of polypropylene, 1 to 7 wt% of a dispersing agent, and 1 to 3 wt% of a softening agent with respect to the total weight of a polymer mixture for the blending; and in that the total weight of the non-woven fabric is 10 to 100 gsm. In the polylactic acid blended non-woven fabric having improved flexibility, and the method for preparing same as configured above according to the present invention, in addition to the low carbon emission properties of a conventional polypropylene/polylactic acid non-woven fabric, a disadvantage thereof in having low flexibility due to the distinctive stiffness of polylactic acid is resolved by adding a particular softening agent in a certain ratio in order to reduce the surface friction coefficient of the non-woven fabric and thereby improve flexibility. Also, the typical disadvantage described above is resolved particularly by controlling the conditions in a preparation process of mixing and weaving through the use of a dispersing agent to homogeneously mix polylactic acid and polypropylene for weaving and fabricating into the non-woven fabric, thereby improving productivity.

Description

technical field [0001] The present invention relates to a polylactic acid mixed non-woven fabric with improved flexibility and a manufacturing method thereof, more particularly to a polylactic acid mixed non-woven fabric with improved flexibility and a manufacturing method thereof, which is polylactic acid with excellent biodegradability Polylactic acid and polypropylene are mixed using a specific dispersant, and spun under specific conditions to produce nonwoven fabrics. Thus, polylactic acid mixed nonwoven fabrics that are easy to reduce carbon emissions reduce the friction coefficient of the surface of the nonwoven fabric and Improve the flexibility, so as to improve the quality of the product. Background technique [0002] With the development of technology and the improvement of the quality of life, the environmental problems caused by the geometric progression of waste polymers and the soaring price of oil, therefore, the environmental burden is low and can be obtained...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/724D04H1/54D04H1/435D04H1/4291
CPCD04H1/4291D04H1/435D04H1/54D04H1/724D04H1/43835
Inventor 朴瑞镇金东旭尹际得
Owner TORAY ADVANCED MATERIALS KOREA
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