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Shoe upper skin film for preventing dye migration

a skin film and upper technology, applied in the upper, chemistry apparatus and processes, synthetic resin layered products, etc., can solve the problems of many limitations in choosing the color of the skin film, and the shoe cannot be aesthetically pleasing

Inactive Publication Date: 2018-08-23
PARK HEEDAE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patent text is to provide a shoe upper skin film that stops dye from migrating from a fabric to the skin film when they are bonded together.

Problems solved by technology

Furthermore, there are many limitations in choosing the color of the skin film.
In addition, a problem arises in that when the shoe is worn for a long period of time, the color of the fabric 40 migrates to the skin film 10 so that the shoe cannot be aesthetically pleasing.

Method used

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  • Shoe upper skin film for preventing dye migration
  • Shoe upper skin film for preventing dye migration
  • Shoe upper skin film for preventing dye migration

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027]FIG. 3 is a figure showing the configuration of a shoe upper skin film for preventing color migration according to a preferred embodiment of the present invention. A skin film 100 according to the present invention is made by a co-extrusion method or a dry coating method. Specifically, the skin film 100 is made to have a three-layer structure and a total thickness of 0.10 to 0.50 mm.

[0028]Referring to FIG. 3, the skin film 100 according to the present invention comprises: a hot-melt film 400 made of thermoplastic polyurethane and forming the bottom layer of the skin film; a dye migration-preventing film 300 made of EVOH resin and formed on the hot-melt film 400; and a TPU film 200 formed on the dye migration-preventing film 300. The EVOH resin which is a copolymer of ethylene and vinyl alcohol is a resin having an excellent effect on the prevention of gas permeation. When the EVOH film that is the dye migration-preventing film 300 is formed between the hot-melt film 400 and th...

example 2

[0029]FIG. 4 is a figure showing the configuration of a shoe upper skin film for preventing color migration according to another preferred embodiment of the present invention. A skin film 500 according to the present invention is formed to have a two-layer structure and a thickness of 0.10 to 0.50 mm. It is made by a co-extrusion method using a conventional T-die extruder or made by forming a TPU film 200 on a hot-melt film 600 by a dry coating method.

[0030]Referring to FIG. 4, the skin film 500 according to the present invention is composed of a TPU film 200 and a hot-melt film 600. The TPU film 200 is made of thermoplastic polyurethane, and the hot-melt film 600 is made of a mixture of thermoplastic polyurethane and EVOH resin. Namely, to make the hot-melt film 600, a mixture of 5-95 wt % of thermoplastic polyurethane and 95-5 wt % of EVOH resin is preferably used

[0031]In the skin film 500 configured as described above, EVOH contained in the hot-melt film 600 can also prevent the ...

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Abstract

The present invention provides a shoe upper skin film for preventing dye migration, which comprises: a polyurethane skin or thermoplastic polyurethane (TPU) film having a color layer; and a thermoplastic polyurethane hot-melt film, wherein a film made of an ethylene-vinyl alcohol copolymer is formed between the TPU film and the hot melt film. Thus, when the skin film is bonded to a fabric, the dye of the fabric can be prevented from migrating to the skin film so that the color layer of the skin film can be stained from being stained.

Description

REFERENCE TO RELATED APPLICATIONS[0001]This is a continuation of pending International Patent Application PCT / KR2015 / 011990 filed on Nov. 9, 2015, which designates the United States and claims priority of Korean Patent Application No. 10-2015-0147917 filed on Oct. 23, 2015, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a shoe upper skin film for preventing dye migration, and more particularly to a shoe upper skin film for preventing dye migration, which can not only prevent the dye in a fabric from migrating to the skin film having a color layer when the skin film is bonded to the fabric by a conventional heat press operation, thereby preventing the skin film from being stained, but also prevent the color of the fabric from migrating to the skin film, even when the shoe is used for a long period of time.BACKGROUND OF THE INVENTION[0003]As is well known, in the shoe industry field, a method of manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A43B23/02B32B27/40B32B27/30
CPCA43B23/0215A43B23/0235A43B23/0255A43B23/026B32B27/40B32B27/306A43B3/0078B32B7/04B32B27/08B32B2250/02B32B2250/03B32B2270/00B32B2307/402B32B2307/7242B32B2307/732B32B2437/02B32B27/30
Inventor PARK, HEEDAE
Owner PARK HEEDAE