Spandex fiber having improved adhesive characteristics with hot melt adhesive and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-2016108237-A1
Application number	US-201414893031-A
Country	US
Kind code	A1
Filing date	Jan 7, 2014
Priority date	Aug 13, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

The present invention relates to a spandex fiber and a method for manufacturing the same that is capable of providing excellent adhesive characteristics, by means of a hot melt adhesive, between the spandex fiber and a polypropylene nonwoven fabric or a polyethylene film, during a diaper-manufacturing process. The method for manufacturing a spandex fiber comprises the steps of: preparing a polyurethane urea solution as a spinning solution; and dry-spinning the spinning solution to obtain the spandex fiber, where the polyurethane urea solution contains, with respect to the weight of the solid content, about 0.1 to 30 wt. % of an ethylene vinyl acetate monomer or polymer, or a derivative thereof, a C9 hydrocarbon-based resin monomer or polymer, or a derivative thereof, a C5 hydrocarbon-based resin monomer or polymer, or a derivative thereof, or a C5/C9 hydrocarbon-based resin monomer or copolymer, or a derivative thereof.

First claim

What is claimed is:

1 . A spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, an ethylene vinyl acetate monomer or polymer, or a derivative thereof represented by the following chemical formula 1 is used as an adhesion enhancer in an amount of 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive,

2 . A spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, a C9 hydrocarbon-based resin monomer or polymer, or a derivative thereof represented by the following chemical formula 2 is used as an adhesion enhancer in an amount of 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive,

3 . A spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, a C5 hydrocarbon-based resin monomer or polymer, or a derivative thereof represented by the following chemical formula 3 is used as an adhesion enhancer in an amount of 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive,

4 . A spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, a C5/C9 hydrocarbon-based resin copolymer or a derivative thereof is used as an adhesion enhancer in an amount of about 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive, a C5/C9 hydrocarbon-based resin copolymer, or a derivative thereof being prepared by copolymerization of the C9 hydrocarbon-based resin monomer or polymer, or the derivative thereof represented by the chemical formula 2 as claimed in claim 2 and the C5 hydrocarbon-based resin monomer or polymer, or the derivative thereof represented by the chemical formula 3 as claimed in claim 3 .

5 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, the ethylene vinyl acetate monomer or polymer, or the derivative thereof represented by the chemical formula 1 as claimed in claim 1 is used as an adhesion enhancer in an amount of 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive.

6 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, the C9 hydrocarbon-based resin monomer or polymer, or the derivative thereof represented by the chemical formula 2 as claimed in claim 2 is used as an adhesion enhancer in an amount of 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive.

7 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, the C5 hydrocarbon-based resin monomer or polymer, or the derivative thereof represented by the chemical formula 3 as claimed in claim 3 is used as an adhesion enhancer in an amount of 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive.

8 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, the C5/C9 hydrocarbon-based resin copolymer, or the derivative thereof is used as an adhesion enhancer in an amount of about 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive, the C5/C9 hydrocarbon-based resin copolymer or the derivative thereof being prepared by copolymerization of the C9 hydrocarbon-based resin monomer or polymer, or the derivative thereof represented by the chemical formula 2 as claimed in claim 2 and the C5 hydrocarbon-based resin monomer or polymer, or the derivative thereof represented by the chemical formula 3 as claimed in claim 3 .

Assignees

• Hyosung Corp

Inventors

• Chung Hyun Gee
• Kang Yeon Soo

Classifications

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• C09J123/0853

  Vinylacetate · CPC title

• D01F6/70 Primary

  from polyurethanes · CPC title

• B32B5/022

  Non-woven fabric · CPC title

• D01F6/88

  from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds · CPC title