KR200483872Y1 - Adhering mirror having anti-fog function - Google Patents

Adhering mirror having anti-fog function Download PDF

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Publication number
KR200483872Y1
KR200483872Y1 KR2020150005897U KR20150005897U KR200483872Y1 KR 200483872 Y1 KR200483872 Y1 KR 200483872Y1 KR 2020150005897 U KR2020150005897 U KR 2020150005897U KR 20150005897 U KR20150005897 U KR 20150005897U KR 200483872 Y1 KR200483872 Y1 KR 200483872Y1
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South Korea
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titanium dioxide
group
mirror
weight
substrate
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KR2020150005897U
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Korean (ko)
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KR20170000936U (en
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황병우
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(주)세화피앤씨
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
    • A47G1/02—Mirrors used as equipment

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  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Laminated Bodies (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

The present invention relates to an attachment type mirror having an anti-fog function. More particularly, the present invention relates to an attachment type mirror having a housing 10, Wherein the reflector comprises a transparent plastic substrate 31, a metal layer 32 formed by depositing a metal on the rear surface of the substrate, and an ultra-hydrophilic film 33 having a thickness of 10 to 40 micrometers on the entire surface of the transparent plastic substrate. The mounting mirror of the present invention is miniaturized so that only a part of the face or the body can be irradiated, and it is possible to easily attach and detach it to a desired place such as a mirror or a tile wall which is already installed, However, it is made of plastic material, so there is no fear of breakage.

Description

ADHERING MIRROR HAVING ANTI-FOG FUNCTION

The present invention relates to an attachment type mirror having an anti-fog function. More particularly, the present invention relates to an attachment type mirror having a housing 10, Wherein the reflector comprises a transparent plastic substrate (31), a metal layer (32) formed by depositing a metal on the back surface of the substrate, and an anatase phase substantially in the range of 1 to 100 nm in average particle size on the entire surface of the transparent plastic substrate Crystalline titanium dioxide or a crystalline titanium dioxide core having a crystalline titanium dioxide layer doped with a metal component in the crystalline titanium dioxide to form an amorphous titanium dioxide layer in an amount of 10 to 50 weight percent based on the weight of the crystalline titanium dioxide, - Photocatalyst solution containing titanium dioxide photocatalyst in the form of amorphous titanium dioxide shell, dispersant and dispersing medium 80 to 95 A super-hydrophilic film 33 having a thickness of 10 to 40 micrometers formed by applying a coating solution containing 10 to 40 parts by weight of a curing binder, 5 to 20 parts by weight of a curing binder, and 10 to 40 parts by weight of a leveling agent and drying and heat- Wherein the mirror is a mirror surface.

A mirror in a bathroom is useful when cleansing or shaving. However, due to the nature of the bathroom, water vapor is generated and the temperature difference causes the surface of the mirror to float on the surface of the mirror. Attempts have been made to impart anti-fog, or anti-fogging properties, to remove or prevent the fogging. The first method is to install the hot wire closely to the back of the mirror, to energize it, and to remove the fogging of the mirror surface using heat. However, this method is difficult to introduce because it consumes electrical energy. Another method is to directly coat a liquid hydrophilic composition on the glass surface to form a hydrophilic film or to attach a separate anti-fogging film. There are three general methods for producing anti-fogging films. The first method is a method in which a polyolefin resin composition containing a surfactant-based hydrophilic compound as an antifogging agent is applied to the surface layer of a multilayer coextruded film of two or more layers and kneaded, melted and extruded to form a film. The second method is to coat a surface of a substrate with a anti-fogging composition containing a surfactant and an inorganic colloid-based hydrophilic compound dispersed in an organic solvent using an anti-fogging agent and then adding a binding resin and a curing agent. A third method is a method of coating a coating composition containing titanium oxide (TiO 2 ), a hydrophilic photocatalyst, and porous silicon oxide (SiO 2 ), on a substrate surface to form a one or two anti-fogging layer.

However, since the surfactant-based hydrophilic compound is used as the anti-fogging agent, the anti-fogging property can be maintained at the initial stage due to the surface migration of the surfactant due to the separation of the specific gravity. However, There is a problem that it is lost. Although the second method can maintain the anti-fogging property for a long period of time by using the hydrophilic inorganic colloid compound as the anti-fogging agent, there is a problem that the anti-fog coating layer is easily removed by external stimuli , Polyvinylpyrrolidone or the like is used as a binding resin to contaminate the environment. In addition, the third method includes a porous inorganic oxide such as silicon oxide (SiO 2 ) in addition to the hydrophilic photocatalyst, and once hydrophilized by daylight, hydrophilicity is maintained in the dark due to the effect of silicon oxide (SiO 2 ) The surface hydrophilicity can be improved, but the transparency is low, the adhesion between the coating layer and the substrate is low, and the hydrophilic layer is easily peeled off. Also, since the hydrophilic layer is porous, the abrasion resistance is low. There is a problem that it is difficult to recover.

Accordingly, there has been an attempt to improve the durability of the antifogging film. Korean Patent No. 884690 discloses a method for producing a cellulose ester film, comprising the steps of: immersing a cellulose ester film in an aqueous alkaline solution; And a step of treating the immersed film with an aqueous alkaline solution mixed with distilled water having been subjected to primary to tertiary distillation of sodium acetate or potassium acetate and drying at a temperature within a range of 60 to 100 ° C. Is disclosed. Korean Patent No. 1507208 discloses a binder formed by polymerizing a silane compound represented by Formula 1 below; Wherein the hollow silica particles comprise 10 to 120 parts by weight of the binder and 0.1 to 20 parts by weight of an acid catalyst based on 100 parts by weight of the hollow silica particles. R 1 x Si (OR 2) 4-x wherein R 1 is an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms or an alkenyl group having 3 to 10 carbon atoms, R 2 is an alkyl group having 1 to 6 carbon atoms, and x represents an integer of 0? x <4). The Applicant has also found that crystalline titanium dioxide, which has an average particle size in the range of 1 to 100 nm and essentially contains an anatase phase, or a metal-doped crystalline titanium dioxide surface doped with a metallic component in the crystalline titanium dioxide, Crystalline titanium dioxide core in the range of 10 to 50% by weight in the range of 10 to 50% by weight; a photocatalytic solution containing a titanium dioxide photocatalyst in the form of a titanium dioxide shell in the form of an amorphous titanium dioxide shell; a photocatalytic solution containing a dispersant and a dispersing medium; And 10 to 40 parts by weight of a leveling agent.

However, the anti-fogging film or superhydrophilic coating composition described above including the applicant's patent has a weak adhesion to a glass substrate and a low durability so that it is difficult to directly coat the glass, and when the function of the superhydrophilic film deteriorates, There is a problem that the whole must be replaced, which is economically undesirable. Also, in the case of using a mirror in a bathroom, in most cases, the part that has anti-fog property is a portion to face, so it is not necessary that the front of the mirror has anti-fog function.

Korean Patent No. 1346631 Korean Patent No. 1507208 Korean Patent No. 884690

Accordingly, the technical problem to be solved by the present invention is to miniaturize the facial part or a part of the body so that it can be easily attached and detached to a desired place such as a mirror or a tile wall which is installed, and an attaching mirror .

The reflector (30) includes a housing (10), an attachment member (20) provided on a rear surface of the housing, and a reflector (30) attached to the front surface of the housing. 1. A transparent plastic substrate, comprising: a transparent plastic substrate (31); a metal layer (32) formed by depositing a metal on the rear surface of the substrate; and crystalline titanium dioxide or an amorphous material containing an anatase phase essentially having an average particle size of 1 to 100 nm A crystalline titanium dioxide core in the range of 10 to 50 weight percent based on the weight of the crystalline titanium dioxide on a metal doped crystalline titanium dioxide surface doped with a metal component in titanium dioxide; a crystalline titanium dioxide core in the form of an amorphous titanium dioxide shell; 80 to 95 parts by weight of a photocatalyst solution containing a titanium dioxide photocatalyst, a dispersant and a dispersion medium, a curable binder 5, 20 to 40 parts by weight of a leveling agent, and 10 to 40 micrometers thick superhydrophilic film (33) formed by drying and heat treatment at a temperature of 100 to 150 DEG C. [ Provide a mirror.

In the present invention, the curable binder is a vinyl group or a C 1 to C 6 hydrocarbon group having a methacryloxy group, a mercapto group, an amino group or an epoxy group, R 2 is a C 1 to C 4 hydrocarbon group, C 1 to C 8 hydrocarbon group or acyl group, and a and b are each 0 or 1, or a hydrolyzate or a partial hydrolyzate thereof, represented by R 1 a R 2 b Si (OR 3) 4-ab Thereby providing an attaching mirror.

The present invention also relates to a process for producing the alkoxysilane compound, wherein the alkoxysilane compound is at least one selected from the group consisting of tetraethyl orthosilicate, methyltriethoxysilane, methyltrimethoxysilane, diethoxydimethylsilane and diethoxydiethylsilane Wherein the mirror is a mirror.

Further, the present invention provides an attachment mirror wherein the leveling agent is at least one selected from the group consisting of a polyether polysiloxane, a polyacrylic polysiloxane, and a polydimethylsiloxane.

In addition, in the present invention, the superhydrophilic membrane is coated twice, dried and heat-treated twice, and the coating liquid is applied by a flow coating method in which the substrate is vertically or inclinedly mounted on the substrate, And the orientation of the substrate is reversed during the subsequent application of the coating.

The mounting mirror according to the present invention can be easily attached to or removed from a desired place such as a mirror or a tile wall which is installed in a conventional manner, so that only a part of the face or a part of the body can be irradiated, and there is no fear of breakage .

FIG. 1 is a perspective view of an attaching mirror according to the present invention and a partially enlarged cross-
2 is a rear perspective view of the mounting mirror according to the present invention;
3 is a graph showing the results of measurement of the difference in partial coating thickness according to the number of times of the flow coating method in the transparent plastic substrate of the present invention

Hereinafter, the present invention will be described in detail with reference to the drawings attached hereto.

Fig. 1 is a partially enlarged cross-sectional view of a reflector portion and a perspective view of an attaching mirror according to the present invention, and Fig. 2 is a rear perspective view of an attaching mirror according to the present invention. 1 and 2, the mounting mirror 100 of the present invention includes a housing 10, an attachment member 20 provided on the rear surface of the housing, and a reflector 30 attached to the front surface of the housing. Wherein the reflector (30) comprises a transparent plastic substrate (31), a metal layer (32) formed by depositing a metal on the rear surface of the substrate, and an anatase phase , Or a crystalline metal oxide formed by forming a titanium dioxide layer in an amount of 10 to 50% by weight based on the weight of the crystalline titanium dioxide on the surface of the metal-doped crystalline titanium dioxide doped with the metal component in the crystalline titanium dioxide Titanium Core - 80 to 95 parts by weight of a photocatalyst solution containing a titanium dioxide photocatalyst in the form of an amorphous titanium dioxide shell, a dispersant and a dispersing medium, Further comprising 5 to 20 parts by weight and leveling agent 10 to 40 parts by weight, and drying and heat-treating at a temperature of 100 to 150 DEG C twice or four times, And a film (33).

In the mounting mirror 100 of the present invention, the housing 10 has a structure that can be combined with or accommodated with the reflector 30 and the mounting member 20, and the material, shape, And the attachment member 20 can be fixed and protected. Also, as shown in FIG. 1, it may further include a receiving groove 11 for receiving a bathroom article such as a toothbrush or a razor.

The attaching member 20 attaches and fixes the mounting mirror 100 of the present invention to a wall surface of a mirror or a tile of a bathroom and forms a pressure sensitive adhesive layer on the rear surface of the housing, An adsorption plate or the like as in the case of the present invention, and the manner or form thereof is not particularly limited.

The reflector 30 includes a transparent plastic substrate 31, a metal layer 32 formed by depositing a metal on the rear surface of the substrate 31, and a metal layer 32 having an average particle size of 1 to 100 nm and an anatase Phase or an amorphous titanium dioxide layer in the range of 10 to 50 wt% based on the weight of the crystalline titanium dioxide on the surface of the metal-doped crystalline titanium dioxide doped with the metallic component in the crystalline titanium dioxide A coating liquid containing 80 to 95 parts by weight of a photocatalyst solution containing a titanium dioxide photocatalyst in the form of a crystalline titanium dioxide core-amorphous titanium dioxide shell, a dispersant and a dispersion medium, 5 to 20 parts by weight of a curable binder and 10 to 40 parts by weight of a leveling agent And drying and heat-treating at a temperature of 100 to 150 ° C is repeated twice or four times, 40 includes a micrometer-thick of a second hydrophilic membrane (33). The material of the transparent plastic substrate 31 is not particularly limited, and it is suitable if the transmittance in the visible light region is 80% or more. Preferable examples of the transparent plastic substrate 31 include PC (polycarbonate), PS (polystyrene), PMMA and transparent ABS, which are excellent in transparency and impact resistance. In the case of the present invention, transparent plastic is used instead of the glass used for a mirror, so that even if the mounting mirror falls, there is no risk of breakage and it is possible to reduce the weight. The metal layer 32 is formed by depositing a metal on the rear surface of the plastic substrate 31 and serves as a mirror. The metal layer 32 is sufficient to perform light reflection to serve as a mirror and ensure its durability. The kind of metal and the deposition conditions are already known, and the metal layer 32 has a normal knowledge in the technical field to which the present invention belongs. It will be possible for the enemy to choose, so that no further detailed description will be given in this specification. A super hydrophilic film 33 is formed on the front surface of the transparent plastic substrate 31 to prevent fogging. The composition of the coating liquid constituting the superhydrophilic film 33 is as disclosed in Korean Patent No. 1346631 of the present applicant. However, since the super hydrophilic film 33 of the present invention is formed over a large area, it is not easy to apply a thin film coating method such as spin coating, ink jet or doctor blade method. Therefore, the inventor of the present invention has found that when the transparent plastic substrate 31 is vertically or inclined, the super-hydrophilic film coating liquid is sprayed on the upper surface of the transparent plastic substrate 31 so that the coating solution flows naturally from top to bottom along the surface of the substrate, Flow coating method was applied. However, in the case of such a flow coating method, there is a problem that the upper portion of the coating surface is relatively thin, whereas the lower portion of the coating surface is relatively thick. Thus, the inventor of the present invention conducted the coating twice or four times in the flow coating, reversing the vertical mounting direction of the transparent plastic substrate in the even-numbered coating, as opposed to the odd-numbered coating, The deviation was reduced. FIG. 3 shows the results of measuring the difference in the thickness of the partial coating film, that is, the thickness of the super hydrophilic film 33, according to the number of times of the flow coating method in the transparent plastic substrate 31 of the present invention. As shown in FIG. 3, the difference in thickness between the upper and lower super hydrophilic membranes (33) in the first coating is about 4 micrometers, which corresponds to 50% of the average coating thickness, The coating thickness variation was 1.6 micrometers, which was about 10% of the average coating thickness. In addition, the anti-fog performance of the reflector 30 was measured according to the number of coatings as described above. The anti-fog performance was measured as follows.

At least 4 samples per specimen were prepared. The samples were immersed in distilled water (minimum 5 ml of distilled water per 1 cm 2 of sample, 23 ° C ± 5) for 1 hour and taken out of distilled water and allowed to stand for at least 12 hours at room temperature (23 ± 5 ° C, 50%), and the time (in seconds) when clouding occurred was measured while irradiating water vapor at 50 ° C ± 0.5. The results of coating thickness and antifogging performance after one coating and two coatings are summarized in Tables 1 and 2, respectively, as shown below.

location thickness #One #2 # 3 #4 Top 4.8 7 seconds 7 seconds 8 seconds 9 seconds middle 6.5 20 seconds 15 seconds 18 seconds 18 seconds Lower end 8.7 25 seconds 25 seconds 26 seconds 25 seconds

location thickness #One #2 # 3 #4 Top 14.6 30 seconds or more 30 seconds or more 30 seconds or more 30 seconds or more middle 16.2 30 seconds or more 30 seconds or more 30 seconds or more 30 seconds or more Lower end 15.4 30 seconds or more 30 seconds or more 30 seconds or more 30 seconds or more

As can be seen from Table 1, the thickness deviation of about 4 μm was measured from 4.8 μm at the upper end to 8.7 μm at the lower end in one coating, and the performance according to the thickness was excellent as the lower end was as shown below . Also, as shown in Table 2, when two coatings were performed by changing the mounting direction, the coating thickness was increased and the thickness variation was reduced to 1.6 占 퐉 or less when coating was performed from the top 14.6 占 퐉 to the bottom 15.4 占 퐉. As shown in Table 2, the performance evaluation according to the position was uniformly excellent without any deviation.

The thickness of the superhydrophilic film 33 is preferably in the range of 10 to 40 micrometers. If the thickness of the superhydrophilic film is less than 10 micrometers, the anti-fog performance is insufficient. If the thickness exceeds 40 micrometers, the anti-fog function improvement effect is insignificant but the economical efficiency is lowered and the film thickness variation becomes larger.

One embodiment of the present invention described above should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as it is obvious to those skilled in the art.

10: housing 11: storage groove
20: attachment member 30: reflector
31: plastic substrate 32: metal layer
33: super hydrophilic membrane 100: mounting mirror

Claims (5)

A housing (10); an attachment member (20) provided on a rear surface of the housing; and a reflector (30) attached to a front surface of the housing,
The reflector includes a transparent plastic substrate 31, a metal layer 32 formed by depositing a metal on the rear surface of the substrate, and a crystalline titanium dioxide film 32 having an average particle size of 1 to 100 nm and essentially containing an anatase phase, Or a crystalline titanium dioxide core in which the amorphous titanium dioxide layer is formed in the range of 10 to 50% by weight based on the weight of the crystalline titanium dioxide on the surface of the metal-doped crystalline titanium dioxide doped with the metallic element in the crystalline titanium dioxide-amorphous titanium dioxide A coating liquid containing 80 to 95 parts by weight of a photocatalyst solution containing a titanium dioxide photocatalyst in the form of a shell, a dispersant and a dispersion medium, 5 to 20 parts by weight of a curable binder and 10 to 40 parts by weight of a leveling agent is applied and dried and dried at a temperature of 100 to 150 캜 A super-hydrophilic film 33 having a thickness of 10 to 40 micrometers formed by heat treatment, And including,
The superhydrophilic membrane may be formed by a coating method such as a flow coating method in which the substrate is vertically or inclined at the time of the initial application and then the coating liquid is sprayed on the upper side to flow downward, Wherein the orientation of the substrate is reversed when the next application is performed. The method according to claim 1,
The curable binder is R1 is a vinyl group, or a methacryloyl rock group, mercapto group, C 1 ~ C 6 hydrocarbon group, R2 is a hydrocarbon group, R3 of C 1 ~ C 4 having an amino group or an epoxy group is a C 1 ~ C 8 a hydrocarbon group or an acyl group, a and b are each 0 or 1, R1 a R2 b Si (OR3) to the alkoxysilane-based compound, or characterized in that that the hydrolyzate or partial hydrolyzate represented by the 4-ab formula Mounting mirrors. 3. The method of claim 2,
Wherein the alkoxysilane compound is at least one selected from the group consisting of tetraethyl orthosilicate, methyltriethoxysilane, methyltrimethoxysilane, diethoxydimethylsilane and diethoxydiethylsilane. Expression mirror. The method according to claim 1,
Wherein the leveling agent is at least one selected from the group consisting of a polyether polysiloxane, a polyacrylic polysiloxane, and a polydimethylsiloxane. delete
KR2020150005897U 2015-09-03 2015-09-03 Adhering mirror having anti-fog function KR200483872Y1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4401731B2 (en) 2003-10-07 2010-01-20 セントラル硝子株式会社 Anti-fog mirror

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060020455A (en) * 2004-08-31 2006-03-06 주식회사 엔텍 Mirror for bathroom
KR100884690B1 (en) 2008-01-24 2009-02-18 주식회사 화승인더스트리 Process for producing cellulose ester anti-fogging film and anti-fogging film using the same
KR101346631B1 (en) * 2011-08-03 2014-01-07 (주)세화피앤씨 Hydrophilic anti-fogging film
KR101446305B1 (en) * 2012-10-05 2014-10-06 오건희 frame
KR101507208B1 (en) 2012-11-07 2015-04-07 (주)엘지하우시스 Super hydrophilic anti-reflection coating composition containing siloxane compound, super hydrophilic anti-reflection film and manufacturing method using the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4401731B2 (en) 2003-10-07 2010-01-20 セントラル硝子株式会社 Anti-fog mirror

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