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Span-bonded nonwoven fabric

A non-woven fabric and spun-bonded technology, which is applied in the direction of non-woven fabrics, textiles and papermaking, can solve the problems of excellent forming processability and tracking performance, and achieve excellent dimensional stability, excellent low modulus, and maintaining stretchability Effect

Inactive Publication Date: 2010-05-05
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As such, although non-woven fabrics excellent in low modulus and high stretchability have been disclosed, they have not been able to obtain a non-woven fabric suitable for door moldings that is particularly excellent in formability and trackability, and is also excellent in dimensional stability after forming. Non-woven fabrics such as the backing fabric for automotive interior decoration

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Add 100 parts of terephthalic acid (hereinafter abbreviated as TPA), 40 parts of ethylene glycol (hereinafter abbreviated as EG), 15 parts of neopentyl glycol (hereinafter abbreviated as NPG) and a small amount of catalyst. After transesterification-polymerization, pellets were made to obtain aromatic copolyester A (hereinafter abbreviated as COPES-A) with a melting point of 178° C. and an intrinsic viscosity of 0.780. 100 parts of TPA, 1,4 butanediol (hereinafter Abbreviated as BG) 70 parts and a small amount of catalyst were added, transesterification-polymerization was carried out by the usual method, and pellets were made to obtain PBT-A with a melting point of 230°C and an intrinsic viscosity of 1.205.

[0077] 10 parts of COPES-A and 90 parts of PBT-A were charged into a rotary vacuum dryer, mixed and dried (dried to a moisture regain of 0.002% by weight), and used for spinning. At a spinning temperature of 260°C, spin from a nozzle with a small hole diameter of φ...

Embodiment 2

[0081] Except for using 5 parts of COPES-A and 95 parts of PBT, the embossed spunbonded nonwoven fabric obtained in the same manner as in Example 1 had a thickness of 0.17 mm and a weight per unit area of ​​25 g / m 2 , when the elongation per unit area weight in the longitudinal direction (MD) is 5%, the load is 0.6N / 5cm, the tensile strength is 39N / 5cm, and the elongation is 24%, and the elongation per unit area weight in the transverse direction (CD) The load at 5% is 0.3N / 5cm, the tensile strength is 26N / 5cm, and the elongation is 27%. The fineness of the fibers constituting the nonwoven fabric was 1.7 dtex, the melting point was 229° C., the flow initiation temperature was 204° C., and most of the contact points between the fibers were bonded.

[0082] The performance evaluation of the obtained spun-bonded nonwoven fabric was performed similarly to Example 1. The obtained roof material had no arching, sagging, damage, resin oozing, unevenness, conformed to the shape of the...

Embodiment 3

[0099] Add 100 parts of terephthalic acid (hereinafter abbreviated as TPA), 40 parts of ethylene glycol (hereinafter abbreviated as EG), 15 parts of neopentyl glycol (hereinafter abbreviated as NPG) and a small amount of catalyst. After transesterification-polymerization, pellets were obtained to obtain aromatic copolyester A (hereinafter abbreviated as COPES-A) having a melting point of 178° C. and an intrinsic viscosity of 0.780.

[0100] Add 100 parts of TAP, 70 parts of 1,4-butanediol (hereinafter abbreviated as BG) and a small amount of catalyst, carry out transesterification-polymerization by the usual method, and make granules to obtain a granule with a melting point of 230°C and an intrinsic viscosity of 1.205. PBT.

[0101] 10 parts of COPES-A and 90 parts of PBT were charged into a rotary vacuum dryer, mixed and dried (dried to a moisture regain of 0.002% by weight), and used for spinning. At a spinning temperature of 260°C, spin from a nozzle with a small hole diam...

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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Abstract

A span-bonded nonwoven fabric, wherein (A) it comprises continuous fibers having an aromatic polyester (melting point: Tm1) and 1 to 15 wt % of an aromatic copolymerized polyester (melting point: Tm2= 150 DEG C to (Tm1 - 20) DEG C) incorporated in the aromatic polyester, characterized in that said nonwoven fabric exhibits an elongation of 20 % to 100 % and a load at 5 % elongation of 1.2 N / 50 mmor less per g / m2 of the fabric, (B) the aromatic polyester is polybutylene terephthalate, and (C) it exhibits, in the temperature rise step in the measurement by a differential scanning calorimeter, astarting temperature for heat absorption of a heat-absorbing peak indicating a melting point of 140 DEG C or higher. The above span-bonded nonwoven fabric exhibits an excellent low modulus, retains high extension property, is particularly excellent in processability and following property, and also excellent in the dimensional stability after being formed, and thus is suitable for a back cloth for an automobile interior material.

Description

technical field [0001] The present invention relates to a polyester spun-bonded nonwoven fabric with low modulus and excellent extensibility. Polyester spunbonded non-woven fabric used as backing fabric in automotive interior decoration materials. It also relates to a polyester spun-bonded nonwoven fabric used as a backing fabric for a door trim. Background technique [0002] As a backing fabric for automotive interior materials, knitted fabrics such as knitted fabrics and tricot fabrics, fabrics such as broad-loom fabrics, spun-bonded non-woven fabrics, and non-woven fabrics such as staple fibers are widely used. In recent years, in such applications of automotive interior materials, not only designability but also high-grade touch are required, and thus surface softening is strongly required. However, when the surface is softened, the decoration of the skin, that is, the appearance is greatly affected due to the stretchability or trackability of the backing fabric passin...

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 Patents(China)
IPC IPC(8): D04H3/00D04H3/16D04H3/011D04H3/14
Inventor 田中茂树足立将孝山本俊也
Owner TOYOBO CO LTD
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