Sheath-core polyester fiber including antimicrobial agent

An antimicrobial agent, polyester fiber technology, applied in the direction of fiber chemical characteristics, single-component polyester artificial filament, conjugated synthetic polymer artificial filament, etc., can solve the problem of color-changing spinning productivity and other issues

Inactive Publication Date: 2001-05-30
INVISTA TECHNOLOG IES S A R L
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Furthermore, the present invention solves the various problems associated with the prior art by providing a sheath-core polyester fiber w...

Method used

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  • Sheath-core polyester fiber including antimicrobial agent
  • Sheath-core polyester fiber including antimicrobial agent
  • Sheath-core polyester fiber including antimicrobial agent

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0067] Use 2G-T polymer flakes of LRV23.5 to prepare antimicrobial agent masterbatch, the method is as above for Figure 4 instruction of. The masterbatch is dried with dry air at about 166° C. before bicomponent spinning, for example in 80 in FIG. 5 . 2G-T polymer flakes were also used as skin and core polymers, respectively. 2G-T polymer sheets for the skin were dried using dry air at about 160°C, eg in hopper 90 of Figure 5, and for the core at a temperature of about 150°C, eg in hopper 100 of Figure 5 . The polymer for the skin is processed through a single screw extruder, such as extruder 85, 86 shown in Figure 5, which is modified so that the volumetric metered additive masterbatch provides 6 wt. % Antimicrobial Powder, the extruder was operated at a discharge temperature of 277°C at a rate of 252 lbs (144 kg) per hour. The polymer for the core is processed through a conventional single screw extruder, such as extruders 103, 104 shown in FIG. condition.

[0068] The...

example 2

[0075] The core sheath fiber of Example 2 was prepared similarly to Sample A of Example 1, except that the antimicrobial masterbatch was metered in so that the sheath of the silk contained 5 wt% of the antimicrobial powder. Additionally, the skin and core polymer streams were combined in a 3:7 ratio to yield a 30% skin (containing 5% antimicrobial). This example is identified as Example 2 in Table 3 below.

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Abstract

A sheath-core polyester fiber where the sheath includes an antimicrobial agent and the sheath comprises less than thirty percent of the total cross-sectional area of the fiber. The antimicrobial agent is selected such that the relative viscosity of the fiber lies above a defined spinnability limit, so that spinning is possible. With no loss in antimicrobial efficacy, the fiber of the present invention may be slickened with a siliconized finish in order to reduce fiber friction, thus giving the fiber a silky feel.

Description

field of invention [0001] The present invention relates to sheath-core polyester fibers having antimicrobial properties, and more particularly to fibers wherein the sheath contains an antimicrobial agent and comprises less than 30% of the total fiber cross section. Background of the invention [0002] We are surrounded by all kinds of microbes that, in some cases, can interfere with our ability to live healthy lives. Microorganisms that exist in our clothes are able to proliferate rapidly due to the favorable conditions provided such as temperature, humidity and various nutrients. Accordingly, there is a continuing desire to provide fibers with antimicrobial activity to protect the user and the fibers while doing so economically. For simplicity, the term "antimicrobial" is used herein to collectively refer to antibacterial, antifungal, and other such activities. [0003] Proprietary antimicrobial acrylic and acetate fibers are currently commercially available. However, si...

Claims

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Application Information

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IPC IPC(8): D01F1/10D01F6/92D01F8/14
CPCD01F8/14D01F1/103Y10T428/2924Y10T428/2929Y10T428/2933
Inventor J·V·哈佐格D·S·奎恩
Owner INVISTA TECHNOLOG IES S A R L
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