Braun tube having antibacterial coating film

Details Braun tube having antibacterial coating film Braun tube having antibacterial coating film

1998-05-06

2001-08-28

Dye, Rena L. (Department: 1772)

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

C428S034600, C428S036910, C313S479000, C313S480000, C348S824000, C348S834000

Reexamination Certificate

active

06280806

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a Braun tube and a manufacturing method therefor, and more particularly, to a Braun tube having an antibacterial coating film and a manufacturing method therefor.
2. Description of the Related Art
A Braun tube can generate much heat and has electrifying properties. Thus, dust in air easily attaches to the Braun tube and various kinds of microorganisms can reside therein. To solve these problems, an antistatic treatment has been proposed.
Such antistatic treatment prevents the generation of static electricity, thus reducing attachment of dust thereto. However, the antistatic treatment can neither block the heat generated from the Braun tube nor prevent the propagation of microorganisms. Thus, problems relating to sanitation caused by the breeding of microorganisms remain. However, there has been no research at all into a technology for providing a function of preventing the propagation of microorganisms. Most of the research has focused on an antibacterial composition per se and application of the antibacterial composition to a fiber or a sanitary container. Also, most such antibacterial compositions are formed of organic substances.
SUMMARY OF THE INVENTION
To solve the above problems, it is an object of the present invention to provide a Braun tube having an antibacterial function.
It is another object of the present invention to provide a method for manufacturing the above Braun tube.
To achieve the first object, there is provided a Braun tube comprising an antibacterial coating film containing titanium dioxide (TiO
2
).
Preferably, the thickness of the antibacterial coating film is in a range between 500~5,000 Å.
Preferably, the content of titanium dioxide with respect to the antibacterial coating film is between 5~10% based on weight.
Preferably, the antibacterial coating film further comprises at least one silicate compound. Here, the mixing ratio of the titanium dioxide and silicate compound may be in a range between 1:1~1:2, and the sum of the titanium dioxide and silicate compound may be in a range between 10~20% based on total weight of the antibacterial coating film. Also, the silicate compound may be methyl silicate, ethyl silicate or metal silicate.
Also, preferably, the titanium dioxide has a structure of anatase and the average particle diameter is in a range between 1~50 nm.
To achieve the second object, there is provided a method for manufacturing a Braun tube having an antibacterial coating film, comprising the steps of: (a) preparing a dispersion by dispersing titanium dioxide (TiO
2
) in alcohol; and (b) coating the dispersion on the Braun tube and performing a thermal treatment.
Preferably, the titanium dioxide has a structure of anatase and the average particle diameter is in a range between 1~50 nm.
Preferably, the concentration of titanium dioxide in the dispersion is in a range between 5~10% based on weight.
Preferably, the coating is performed to a thickness in a range between 500~5,000 Å.
Also, preferably, the thermal treatment after the coating is performed at a temperature between 130~150° C. for 30~60 minutes.
Preferably, between the steps (a) and (b), the method further comprises the steps of: (a
1
) mixing the dispersion with a solution of silicate compound; and (a
2
) adjusting the pH of the mixture, re-dispersing the mixture using ultrasonic waves, and aging the dispersion. Here, the aging may be performed at a temperature between 30~60° C. for 30~60 minutes.


REFERENCES:
patent: 5667729 (1997-09-01), Shimbori
patent: 5755867 (1998-05-01), Chikuni et al.

Affiliated with

Also associated with

Rating

Braun tube having antibacterial coating film does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Braun tube having antibacterial coating film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Braun tube having antibacterial coating film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2537260