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Non-woven fabric of crimped composite fiber and laminate thereof, and article including the laminate

A technology of composite fiber and woven fabric layer, applied in the field of non-woven fabric and its laminates and articles containing the laminates, can solve the problems of bulkiness deterioration, urine leakage, ulceration and the like

Pending Publication Date: 2020-12-11
TORAY ADVANCED MATERIALS KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this thin nonwoven fabric has very low softness compared with a breathable nonwoven fabric of short fibers obtained by forming a mesh sheet by carding and bonding the mesh sheet by hot air, and thus the softness of the thin nonwoven fabric deteriorates
[0006] In addition, since the bulkiness is deteriorated because curls are not formed at the time of forming the web during the production of a diaper, an area that directly contacts the skin of a baby's buttocks is large, and when the nonwoven fabric is laminated, the acquisition distribution layer (ADL ) so that when a baby urinates, the urine remains in a portion of the topsheet, thereby ulcerating or causing a rash on the baby's buttocks
In addition, there is a problem of urine leaking to the outside of a diaper

Method used

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  • Non-woven fabric of crimped composite fiber and laminate thereof, and article including the laminate
  • Non-woven fabric of crimped composite fiber and laminate thereof, and article including the laminate
  • Non-woven fabric of crimped composite fiber and laminate thereof, and article including the laminate

Examples

Experimental program
Comparison scheme
Effect test

example 1 to 6 and comparative example 1 to 5

[0090] The first propylene-based polymer (A) containing erucamide slip agent therein and the second propylene-based polymer (B) containing erucamide slip agent therein are subjected to composite melt spinning by a spunbonding method to have figure 2 The side-by-side composite fibers of the structure were deposited on a collecting surface, and the composite fibers were subjected to the figure 1 Embossing of the embossing pattern shown in , in order to produce a nonwoven fabric comprising crimped conjugated fibers. The types, physical properties and content ratios of the first propylene-based polymer (A) and the second propylene-based polymer (B), the amount of erucamide slip agent and the characteristics of the embossed pattern are given in Table 1 below. In the table, MFR refers to a melting index measured according to ASTM D1238 under the conditions of a temperature of 230° C. and a load of 2.16 kg, and the amount of slip refers to a weight relative to the total weight of th...

example 1

[0102] Evaluation example 1: Evaluation of physical properties of spunbond nonwoven fabrics

[0103] The physical properties of the spunbonded nonwoven fabrics prepared in Examples 1 to 6 and Comparative Examples 1 to 5 were evaluated as follows, and the results thereof are given in Table 2 below.

[0104] (1) Measure the weight per unit area according to ASTM D 3776-1985 (weight: g / m 2 ).

[0105] (2) Tensile strength: by using a tensile strength measuring device ( Instron) perform a tensile test to obtain a maximum tensile load.

[0106] (3) Tensile elongation: When the nonwoven fabric is stretched to the maximum value, the elongation is measured by the method (2) above.

[0107] (4) Measure the thickness (mm) according to KSK 0506.

[0108] (5) Number of crimps: directly measure the number of crimps of filaments in a range of 10 mm using a microscope.

[0109] (6) Spinnability: Filament vibration was visually observed during melt spinning, and polymer dripping was de...

example 2

[0115] Evaluation Example 2: Evaluation of Physical Properties of Nonwoven Fabric Laminates Comprising Spunbonded Nonwoven Fabrics

[0116] The spunbonded nonwoven fabrics prepared in Examples 1 to 6 and Comparative Examples 1 to 5 were laminated in four layers to produce nonwoven fabric laminates. Next, the physical properties of each of the nonwoven fabric laminates were evaluated by the following methods, and the results thereof are given in Table 3 below.

[0117] (1) Uniformity (CV%) is determined by cutting the non-woven laminate into 1m 2 The size is evaluated as a percentage of a value obtained by dividing the weight deviation of 30 test samples by the average weight of 30 test samples after making 30 test samples. The smaller the uniformity (CV%) value, the better the uniformity.

[0118] (2) Measure the thickness (mm) according to KSK 0506.

[0119] (3) Number of crimps: directly measure the number of crimps in a range of 10 mm using a microscope.

[0120] (4) ...

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Abstract

There is provided a non-woven fabric of a crimped composite fiber including: a first propylene-based polymer and a second propylene-based polymer, wherein, in the first propylene-based polymer and thesecond propylene-based polymer, a melting point of the first propylene-based polymer is higher than a melting point of the second propylene-based polymer by 30 DEG C or more, a ratio (second polymer / first polymer) of melt flow rates (MFR: measurement temperature 230 DEG C, load 2.16 kg) of the first propylene-based polymer and the second propylene-based polymer is 1.7 or more, and a component ratio represented by a weight ratio of the first propylene-based polymer / the second propylene-based polymer is 50 / 50 to 10 / 90.

Description

technical field [0001] One or more embodiments relate to a nonwoven fabric of crimped composite fibers, laminates thereof, and articles comprising the laminates, and more particularly to a nonwoven fabric of crimped composite fibers having improved softness and bulkiness and Laminated products thereof and articles comprising the laminated products. [0002] This application claims the rights and interests of Korean Patent Application No. 10-2018-0044536 filed at the Korean Intellectual Property Office on April 17, 2018, the disclosure of which is incorporated herein by reference in its entirety. Background technique [0003] Determine the final physical properties of a nonwoven fabric based on a mesh forming method and a bonding method. [0004] In the production of a conventional spunbonded nonwoven fabric, the mesh is formed by single spinning or core-sheath composite spinning. The web formed in this way has a simple structure without crimps, and is bonded to each other ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/007D01D5/30D06C23/04D04H13/00B32B5/24B32B5/02B32B5/08A61F13/511
CPCA61F13/511D04H3/007D01F1/10D01F8/06D01D5/32D01D5/34D04H1/4291D04H3/018D04H3/147B32B2307/728B32B2555/02B32B5/08B32B2262/0253B32B2262/12B32B2262/14B32B2260/046B32B5/022B32B2264/10B32B2264/102B32B2264/108B32B2264/104B32B2307/732B32B5/26B32B2307/718B32B2260/021B32B2307/546B32B2250/20B32B2264/12B32B2262/0207B32B2307/54D04H1/43918D04H1/5412D04H1/5414D01D5/30D06C23/04D04H13/00B32B5/24A61F13/5116A61F13/51104A61F2013/51178
Inventor 郑镇一徐永锡金大熙安重权
Owner TORAY ADVANCED MATERIALS KOREA
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