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Contamination resistant fiber sheet

Inactive Publication Date: 2006-04-20
SEKISUI NANO COAT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] It is another object of the present invention to provide a contamination resistant fiber sheet of knitted, woven, or non-woven fiber, which is resistant against contamination, and such contamination is also easily washed off.
[0023] In the second embodiment, it is desirable to have the contamination resistant coating with SiO2 as its main component, however the coating may contain other ceramic substances to the extent that it does not interfere with the purpose of the invention. For example, having SiO2 as its main component, SnO2 may be included in the ceramic as a sub-component. When SnO2 is included as sub-component, the vapor spatter depositing is more easily performed and since SnO2 is hard, it increases the effectiveness against contamination. The outer ceramic coating composed of both SiO2 and SnO2 is also more hydrophilic, non-stick, water droplets forms on surface more easily, and water flows more easily over the surface, which as a result improves the resistance against contamination and oily soiling. When SnO2 and / or ZnO are subcomponents of the ceramic coating, the coating becomes effective against the attachment of contamination caused by static electricity because ZnO possess electro-conductivity.

Problems solved by technology

However, this process is only effective against cotton textiles, and is not known to have positive effect for synthetic textile which is known to be lipophilic and also prone to discoloration.
The process of mixing silica and alumina as a colloid spread liquid and treating the textile by filling the tiny spaces between the fibers, flattening, and evening out the surface of the textile with the tiny colloid particles is also known but this process also is effective for cotton textile but not for synthetic fiber textile, and also poses an additional problem of durability.
On the other hand, the SR process is a known process for protecting synthetic fibers from contamination, however this process is only effective to a certain extent in preventing contamination, and especially oily contamination from adhering to the fiber sheet.
Once contamination adheres, it is difficult to remove the contamination and is not able to prevent repeated contamination.
In addition, SR process is not effective against preventing contamination from entering and spreading through the fibers.

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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  • Contamination resistant fiber sheet
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0044] Under the condition and method described above, a flat board (plate) target 31 made from silicon and tin mixture, which was sintered into a metal plate was used, with the pressure within the closed chamber 20 adjusted to approximately 1×10−3 Torr through introduction of gas mixture of oxygen and argon, and the electrical voltage and current, applied between the first anode 27 and the first target source 29 and between the second anode 28 and the second target source 30 was set at 500 V and 50 A, and material for lace curtain refined and formed from polyester multi-filament line (thread) (150 dale / 75 filament)(approximate weight 80 g / m2), guided through the chamber at a speed of 0.5 m / second, and spatter vapor deposit was performed on both side of the fiber sheet, forming contamination resistant coating with amorphous structure of SiO2 and SnO2 with a thickness of 5 nm.

[0045] The contamination resistant curtain obtained from this process when compared to a curtain without und...

example 2

[0048] The spinning thread of No. 30 thickness of polyethylene terephthalate fiber as both and warp 11a and as weft 11b, is used to weave at a density of 80 threads per inch (31.5 per cm), a flat woven sheet (fiber sheet 11). Then using sodium carbonate(2 g / 1) and non-ion surfactant (5 g / 1, manufactured by Kao K. K. “Score Role 900”), the fiber sheet was refined in a liquid flow dying machine at a liquor ratio of 1:20, 100 degrees C., and for 20 minutes. The fiber sheet was then washed thoroughly with water, dried, and heat set at 180 degrees C. for 60 seconds.

[0049] Next, using fluoride water repelling chemical (manufactured by Asahi Glass K. K., “Asahi Guard AG 925”) solution at concentration of 2%, the fiber sheet was dipped in the solution, mangled, squeezed (70% squeeze ratio), dried, and heat treated at 170 degrees C. for 60 seconds, resulting with the undercoating 12 with a thickness of 0.5 μm fixed on the fiber sheet.

[0050] The fiber sheet with the undercoating was then wo...

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

A fiber sheet composed of knitted, woven, or non-woven fiber, which is resistant against contamination, and such contamination is easily washed off, and is durable, and suitable for use as materials to make curtains, tapestries, screens, flags, wallpaper, and sliding screen door(fusuma), for both indoor and outdoor environments. The fiber sheet is coated on its both sides of the fiber by ceramics composed of oxidized, nitrogenous, or carbonized forms of metals such as tin, titanium, aluminum, and other metals, forming a thin contamination resistant coating. Typically, the contamination resistant coating comprises SiO2 or SnO2 or a combination / mixture of the two substances, and such coating is hard and is superior in protection against contamination

Description

BACKGROUND OF THE INVENTION [0001] This invention relates to a contamination resistant fiber sheet and to a fiber sheet which is resistant to contaminants, such as soil, dirt, smoke, oily soiling and other particles, including airborne particles and substances, (collectively called “contamination” hereafter) have difficulty adhering to the fiber sheet and even if attached, such substances are easily removed therefrom. [0002] The process of starching textiles is known to be effective in resisting contamination from adhering to the fibers forming the textile and is known to make the cleaning of the fibers of the contamination easier. However, this process is only effective against cotton textiles, and is not known to have positive effect for synthetic textile which is known to be lipophilic and also prone to discoloration. In addition, the textile requires starching every time the textile is washed. [0003] The process of mixing silica and alumina as a colloid spread liquid and treatin...

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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IPC IPC(8): B32B27/04B32B27/14B32B27/12B32B27/02C23C14/08C23C14/10C23C14/56D06M11/79
CPCC23C14/086C23C14/10C23C14/562D06M11/79Y10T428/24926D21H19/38D21H19/82D21H27/20D06M2200/05Y10T442/20Y10T442/2033Y10T442/2041Y10T442/2057Y10T442/2082Y10T442/2139Y10T442/2164Y10T442/2189Y10T442/2213Y10T442/2238Y10T442/2279Y10T442/2525Y10T442/273Y10T442/2861Y10T442/2885Y10T442/2893Y10T442/2902
Inventor SUZUKI, MASAYUKISUZUKI, TOSHIKAZUMANABE, KATSUHIDENAKAJIMA, EIGO
Owner SEKISUI NANO COAT TECH
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