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Fluorescent elastic yarn and method for producing the same

a technology of elastic yarn and fluorescence, which is applied in the field of fluorescent elastic yarn, can solve the problems of reducing the productivity of covered elastic yarn, unable to discover the breakage of elastic yarn in real time, and wasting the covered yarn,

Inactive Publication Date: 2006-02-09
HYOSUNG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a fluorescent elastic yarn that can be easily identified using ultraviolet light. The yarn is made by finishing it with spinfinish oils containing a silicone oil, a hydrocarbon oil, and a fluorescent agent. The resulting yarn is scoured easily and has a content of fluorescent agent ranging from 0.001 to 1 wt % of the yarn weight. Additionally, the invention provides a method for producing a hard fiber-covered fluorescent elastic yarn by covering a core yarn with a hard fiber.

Problems solved by technology

However, there is a problem during a covering process of the elastic yarn in that a breakage of the elastic yarn cannot be discovered in real time, and so inferior products having only the covered yarn wound without the elastic yarn to be inserted may be produced.
This problem causes a reduction in productivity of the covered elastic yarn and a waste of the covered yarns.
However, these inorganic additives have not been added into the elastic yarn to find a breakage of the elastic yarn, but rather to improve dulling effect, anti-blocking property, and chlorine resistance, and so the inorganic additives are definitely not classified as tracers for a yarn breakage.
Even though these inorganic additives may be added to the elastic yarn to find a yarn breakage, this method is disadvantageous in that when thickness of the elastic yarn is less than 40 deniers, or a small capacity device such as a portable UV irradiator generally used in a workplace is used to identify a breakage of the elastic yarn, it is impossible to find the breakage of elastic yarn strand inside of hard fibers covered on.

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

example 1

[0032] 518 g of diphenylmethane-4,4′-diisocyanate was reacted with 2328 g of polytetramethyleneether glycol (molecular weight: 1800) under a nitrogen gas atmosphere at 85° C. for 90 min to produce a capped glycol containing isocyanate groups positioned at both polymer ends thereof. The capped glycol thus produced was cooled to room temperature, and 4643 g of dimethylacetamide was added to the cooled capped glycol and dissolved the capped glycol to produce a capped glycol solution.

[0033] After that, a solution, in which 54 g of propylene diamine and 9.1 g of diethylamine were dissolved in 1889 g of dimethylacetamide, was added to the capped glycol at 10° C. or less to produce a segmented polyurethaneurea polymer solution.

[0034] Additives such as a UV stabilizer, an antioxidant, a anti-fuming agent, a dye enhancer, a magnesium-based anti-blocking agent, and a titanium-based dulling agent were added to the above segmented polyurethaneurea polymer solution. The resulting polyurethaneu...

examples 2 to 4

[0037] The procedure of example 1 was repeated except that the resulting polyurethane elastic yarns were 20, 40, and 140 deniers in thickness. The luminosity of the polyurethaneurea elastic yarn package (spool) itself, visual inspection of a single strand of elastic yarn strand, and visual identification of the presence of a single elastic yarn strand inside of hard fiber covered on were evaluated, and results are described in Table 1.

example 5

[0039] The procedure of example 3 was repeated except that a dispersion liquid having a fluorescent agent dispersed therein was added to a spinfinish oil by 0.1 wt % of the spinfinish oil weight. The % FOY (Finish on Yarn) was 5 wt % of the elastic yarn weight as usual, and then the resulting elastic yarn with a thickness of 40 denier was produced and a fluorescent agent content in the resulting elastic yarn was 0.001 wt %.

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

Disclosed is a fluorescent elastic yarn and method for producing the same. The fluorescent elastic yarn which is finished with the spinfinish oil containing the fluorescent agent can fluoresce sufficiently to allow a fine elastic yarn to be seen by the naked eye when ultraviolet light is irradiated to the fluorescent elastic yarn. Therefore, the fluorescent elastic yarn of the present invention is advantageous in that CSY (Core spun yarn) producers are able to identify its presence inside of the hard fiber covering it more easily and timely and thus minimize the numbers of inferior CSY products which are not spun with elastic yarn strands. In addition to this merit, the fluorescent elastic yarn of the present invention gives CSY producers the other advantage that the fluorescent agent can be easily removed from the elastic yarn during the general scouring process posterior to the CSY production process, and therefore there is no possibility that the fluorescent agent is still remain on the fabric made with the CSY.

Description

[0001] This application is a Continuation-in-Part of application Ser. No. 10 / 238,936, filed Sep. 9, 2002, which application is incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the invention [0003] The present invention relates, in general, to a fluorescent elastic yarn and a method for producing the same. In particular, the present invention relates to a fluorescent elastic yarn which is finished with the spinfinish oil containing the fluorescent agent which can fluoresce sufficiently to allow a fine elastic yarn to be seen by the naked eye when ultraviolet light is irradiated to the fluorescent elastic yarn, and a method of producing the same. [0004] 2. Description of the Prior Art [0005] An elastic yarn has been applied to various fields, and a process of knitting and weaving the elastic yarn covered with a natural fiber has been widely used in the art. Various types of elastic yarns, for example, a core spun yarn (CSY) in which cotton or a rayon fib...

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(United States)
IPC IPC(8): D02G3/00D02G3/32D02G3/34
CPCD02G3/328Y10T428/2933D02G3/346
Inventor KANG, YEON SOOPARK, MIN SUYOO, SO RASEO, SEUNG WON
Owner HYOSUNG CORP