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Nonwoven fabric of polyester composite fiber

A technology of non-woven fabrics and composite fibers, which is applied in the directions of non-woven fabrics, conjugated synthetic polymer rayon, textiles and papermaking, etc., can solve the problems of insufficient improvement effect and insufficient effect.

Inactive Publication Date: 2009-03-11
TEIJIN FRONTIER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods can indeed improve the melting thermal stability of polyester to a certain extent, but the effect of improving is not enough, and the hue of the obtained polyester resin still needs to be improved.
In addition, it has also been proposed to use a complex compound of a titanium compound and a phosphorus compound as a catalyst for the preparation of polyester (see, for example, Patent Document 3). However, although this method can improve the melt thermal stability to a certain extent, the effect is not sufficient. , there is still a need to improve the hue of the resulting polyester

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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  • Nonwoven fabric of polyester composite fiber
  • Nonwoven fabric of polyester composite fiber
  • Nonwoven fabric of polyester composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] A mixture of 100 parts by mass of dimethyl terephthalate and 70 parts by mass of ethylene glycol was placed in a stainless steel container capable of a pressurized reaction, and 0.009 parts by mass of tetra-n-butyl titanate was mixed thereinto. The obtained reaction mixture was subjected to a transesterification reaction while heating up from 140° C. to 240° C. under a pressure of 0.07 MPa, and 0.04 parts by mass of triethyl phosphonoacetate was added thereto to terminate the transesterification reaction.

[0168] Move the obtained reaction product into a polycondensation container, raise its temperature to 290°C, and carry out polycondensation reaction under a high vacuum below 26.67Pa to prepare a polyester with an intrinsic viscosity of 0.60, a diethylene glycol content of 1.5%, and a melting point of 254°C. material (without matting agent).

[0169] The obtained polyester polymer was continuously extruded from the discharge part of the reaction vessel to form a stri...

reference example 1

[0171] The synthetic method of titanium trimellitate:

[0172] In the ethylene glycol solution (0.2%) of trimellitic anhydride, add the tetrabutoxytitanium that is 1 / 2 mole with respect to the molar weight of trimellitic anhydride, keep it in the air, under normal pressure, react for 60 minutes, react The product was cooled to room temperature, recrystallized with 10 times the amount of acetone, and the resulting precipitate was filtered and collected with filter paper, and dried at 100° C. for 2 hours to prepare the desired compound used as a catalyst.

Embodiment 2

[0174] Polyester polymer, polyester conjugated staple fiber and nonwoven fabric were prepared as in Example 1. However, the same operation was performed except that 0.016 parts of titanium trimellitate synthesized by the method of the above reference example was used as the titanium compound used as the catalyst. The test results are shown in Table 1.

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Abstract

PROBLEM TO BE SOLVED: To provide a homogeneous nonwoven fabric for foods having good color tone (b value) and small quality dispersion. ŽSOLUTION: The nonwoven fabric for foods is obtained by at least using a polyester composition obtained by using a catalyst for polyester production containing a specific titanium compound and phosphorus compound to provide a heat-bonding conjugate short fiber and using the heat-bonding conjugate short fiber. Ž

Description

technical field [0001] The present invention relates to a polyester composite fiber nonwoven fabric. More specifically, the present invention relates to a polyester conjugate fiber nonwoven fabric made using a polyester resin having good color tone and excellent melt spinnability. The polyester composite fiber nonwoven fabric of the present invention can be used as a sheet in contact with food and beverages, such as materials for food packaging, filter cloths for food such as black tea bags, tea bags, coffee filter cloths, and cloth sheets for filtering ash juice , oil filter cloth, kitchen rags, substrate hygiene materials for reverse osmosis membranes, filter cloths for various beverages, etc. Background technique [0002] Polyester resins, especially polyethylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate and polybutylene terephthalate have excellent mechanical, physical, chemical properties, and thus are widely used in the field of fibers, ...

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): D04H1/42C08G63/87D21H13/24D01F8/14B65D65/02D04H1/26D04H1/55
Inventor 稻垣健治
Owner TEIJIN FRONTIER CO LTD
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