JPH08175848A - Method for dividing film on film-coated glass - Google Patents

Abstract

PURPOSE: To obtain a desired film of divided film surely, efficiently and inexpensively without using a masking member and without damaging and staining a glass surface in a method for dividing the film of film-coated glass. CONSTITUTION: A patterning film 2 is formed with ink on the surface of a glass substrate 1 and the surface of the formed side of the patterning film 2 is coated with a functional film 3. The patterning film 2 and the functional film 3 are removed by cleaning at least the face of the functional film 3 and a film-removed pattern is formed to provide the objective method for dividing a film of a film-coated glass.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the surface of a glass substrate,
Without giving various damage to the glass substrate itself,
Various functional films such as various patterned heat ray reflective films can be easily and efficiently formed at low cost as a film removal, and eventually, while maintaining the original performance of the functional film, it is accompanied by the function. Not only is it useful in the field of flat glass such as window glass for buildings and window glass for vehicles such as automobiles, etc., but it can be widely used in various fields. The present invention relates to a method of dividing a film-coated glass, which is useful for a glass article in the field of

Among them, for example, various radio wave obstacles are prevented in a building using a heat ray reflective film-coated glass or an automobile using a heat ray reflective film coated glass with an antenna conductor, and the radio waves are efficiently transmitted. It also provides an excellent film division method for film-coated glass that can be made into a shape such as a figure, a figure shape, etc., and can be made to appear as if it was coated on the entire surface, and it has a remarkably gentle aesthetic appearance to the occupants and the environment. is there.

[0003]

2. Description of the Related Art In recent years, window glasses having gradually increased functionality have been used. For example, a window glass is coated with a film of metal, metal oxide, or the like, and is provided with a function such as heat insulation performance by sticking a film having such a film. The adoption of glass that has been used is on the rise. Although the effect of thickness is not so great, coating a film with a higher reflectance for radio waves than glass,
When a film having such a film is attached, the reflectance becomes, for example, a considerably high value, and there is an aspect that radio interference is unavoidable.

Therefore, in such a case, the window in the direction of arrival of radio waves had to be provided with uncoated glass, and it was inevitable that the same building had different color tones. In some cases, it was necessary to reduce the heat insulation effect on the windows of the entire building.

For example, Japanese Utility Model Publication No. 63-49932 discloses that
A window glass for an automobile with an antenna is described, which is fitted and fixed in a window frame, and on a window glass surface provided with an antenna element wire for reception or transmission, at least a portion having a predetermined width along the inside of the window frame. It is disclosed that a conductive coating for heat ray reflection is provided on the remaining.

Further, for example, Japanese Utility Model Laid-Open No. 61-121010 discloses a window glass for an automobile. In a window glass for an automobile provided with a heat ray reflective film or a conductive film and an antenna wire, the heat ray reflective film is used. Alternatively, it is disclosed that the conductive film is provided in a portion where the antenna wire is not provided.

Therefore, as one of the glasses having the heat ray reflection performance and the radio wave transmission performance, a film division type called a so-called patch method, for example, Japanese Patent Application Laid-Open No. 3-250797 filed by the applicant of the present invention.
In JP-A-5-42623 or JP-A-5-42623, a laminated plate having a low reflection characteristic for radio waves is disclosed, and in JP-A-5-50548, a heat ray reflective glass having a radio-wave low reflection characteristic, and further JP-A-6-40752. Japanese Patent Laid-Open Publication No. 6-247745 proposes a heat-wave reflective glass for radio waves for vehicles, and JP-A-6-247745 proposes a heat-ray reflective glass having radio wave transmission characteristics.

In the above-mentioned film division type of the film-coated glass of the above-mentioned proposal, a film division method which can be easily and efficiently and inexpensively made into a line without damaging the glass substrate, and a laser method, an etching method, etc. It was necessary to find a new one instead of.

On the other hand, for example, Japanese Patent Application Laid-Open No. 4-112073 describes a method of imprinting permanent characters on a window glass and a window glass for automobiles with a print. In order to apply the inorganic baking paint to the surface of the window glass, and when performing marking or printing of characters with the organic paint, the organic paint is applied to the surface of the window glass before applying the film of the inorganic baking paint. It can be applied by coating or by applying a film of inorganic baking paint and drying and then applying organic paint on the film of the inorganic baking paint, and then baking the baking paint during the window heat treatment process. It is disclosed and the use of an ink jet printer to mark characters is described.

[0010]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the present invention, as described above, in the absence of a division method which is an excellent patterning for making better use of the functional film formed on the glass substrate,
It can be said that by reducing the reflectance for various radio waves such as AM broadcast waves, FM broadcast waves, TV broadcast waves, etc., and no interference occurs, the value of the radio wave transmittance is close to that of the bare glass that does not cover the film, and it is sufficient. In particular, there is more flexibility in the width of the dividing groove in the patch dividing method in which the stripe-shaped or lattice-shaped divided shape described in the above-mentioned JP-A-5-50548 previously proposed by the applicant is exhibited. There is, moreover, more practical in place of the division method described in JP-A-6-40752 and JP-A-6-247745 previously proposed by the applicant, without damaging the glass substrate,
An object of the present invention is to provide a film division method for a film-coated glass which can be more easily and efficiently and inexpensively produced, and can be formed into a line, and which can be provided with various functions.

[0011]

The present invention has been made in view of the above-mentioned problems, and utilizes the characteristics of the printing technology such as an ink jet printer to appropriately delicate the linear shape and the like with a specific ink. Since various patterning films are formed and can be easily removed together with the functional film coated on the patterning film to form a film-cutting pattern on the functional film, for example, a minute dividing groove of a patch dividing system can be formed. The width (aperture width) can be surely stable and the divided pattern can be formed so that it is inconspicuous in appearance, and while maintaining the performance of the functional film such as heat ray reflection performance as a whole,
For example, it is possible to significantly reduce the reflection of radio waves and achieve the same radio wave transmission performance as uncoated glass itself, such as dividing grooves of the coating or patterns such as spots or letters that eliminate the negative performance of the functional film. (EN) A film dividing method for a film-coated glass, which is a film dividing system which can be easily and efficiently and inexpensively manufactured without damaging the substrate and can be formed into a line.

That is, according to the present invention, a patterning film made of ink is formed on the surface of a glass substrate, a functional film is formed on the surface on which the patterning film is formed, and then the surface of the functional film is washed. Thus, the film-cutting pattern is formed by removing the functional film together with the patterning film, thereby forming a film-dividing method for film-coated glass.

Further, the above film-dividing method for film-covered glass, wherein the film-patterned patterning film with the ink is formed by using an ink jet printer.
Further, the film-dividing method of the above-mentioned film-coated glass, wherein the part of the film removal pattern is a set of rounded parts and is linear.

Further, the film-dividing method of the above-mentioned film-coated glass, characterized in that the linear film-extraction pattern portion has a lattice shape and / or a stripe shape.

Further, the above-mentioned film coating is characterized in that the portion of the linear film removal pattern is formed on the heating wire or the antenna conductor applied to the glass surface, or on and above the heating wire or antenna conductor. Method for dividing glass.

Furthermore, the portion of the film removal pattern is a gathering area of rounded portions, and there are rounded portions having different sizes and different densities of the rounded portions in the gathering area, and the rounded portions are present. The method for dividing a film of the above-mentioned film-coated glass, characterized in that it is inclined from a dense part to a rough part.

Furthermore, each of the above-mentioned film dividing methods for film-coated glass is characterized in that the film-cutting pattern portion has a linear shape, a dot-like character shape and / or a figure shape. It is a thing.

Here, when the ink is formed as a thin film on a so-called black frame surface, which is formed by screen-printing and firing a glass surface or a ceramic paste, it can be removed by removing it with at least hot water or hot water by brushing cleaning. Satisfies the conditions that it has an adhesive force that can be achieved, and that it has adhesiveness with the functional film that covers the patterning film, and that it does not spoil the boundary condition of the division boundary part of the functional film when peeling. Further, the coating film is quick-drying and does not exhibit a bleeding phenomenon, for example, and a wire diameter or diameter of at least 0.1 mm or more, preferably 0.2 mm or more can be secured.

In addition, the ink does not leave scratches or stains on the glass surface after being peeled off, and is subjected to a bending treatment or a strengthening treatment in a post process such as a matching treatment or a heating at about 550 to 650 ° C. Even if it is applied, it should not affect the glass surface or the functional film.

The functional film is, for example, a thin film having a high heat ray reflectance, and the sputtered thin film has a surface resistivity of 500.
Glass with a resistance of less than Ω / mouth reflects low electromagnetic waves due to plasma vibrations, so the reflectance is governed by the surface resistance of the film, so not only the sunlight is blocked, but also high-insulation glass that includes heat insulation by reflecting infrared rays. Becomes Further, if the surface resistivity of the thin film is 1 kΩ / mouth or more, the radio wave reflectance is low, but the heat insulating performance is likely to deteriorate. Considering radio wave permeability, for example, 10 M Ω / mouth or more, preferably 20 M Ω / mouth or more, more preferably 22 M Ω / mouth or more, and various selections are made to have a balance with heat insulation performance. Is something that can be done. In addition, there is a low-E film with a surface resistivity of several Ω / neck (for example, trade name: Heat Guard, Perrex).

The functional film may be a single layer or a multi-layer, for example, Cr thin film (for example, about 12 nm), TiN.
Thin film (eg about 35-70 nm), TiOx thin film (eg about 30 nm)
A single layer film such as a TaOx thin film (for example, about 5 nm) / TiNxOy thin film (for example, about 4 to 6 nm) / TaOx thin film (for example, about 5 nm). The thickness is, for example, about 100 nm or less, preferably about 80 nm or less, more preferably about 50 nm or less.

Next, it is preferable that the width of the stripe parallel to the electric field direction of the incoming radio wave of the stripe film is set to 1/20 times or less of the wavelength λ of the radio wave. As suggested by the person, the stripe width may be 1/3 times or less, preferably 1/4 times or less of the wavelength λ of the radio wave, but the intended purpose described above may be achieved even in a more severe environment or condition. 1 to achieve
It should be 20 times or less, preferably 1 /
30 times or less.

More preferably, the width of the groove parallel to the electric field direction of the incoming radio wave is 0 to 3 mm, and the width of the groove orthogonal thereto is 0.1 to.
3 mm, more preferably the width of the parallel grooves is 0-3 mm,
Although the widths of the orthogonal grooves are 0.3 to 3 mm, they can be seen as if they were covered with a heat ray-reflective conductive film, and can be remarkably excellent in designability, heat insulation performance, and ultraviolet ray blocking performance.

Further, in the case of horizontal polarization, the width of the interval in the horizontal direction may be zero, and in the case of vertical polarization, the width of the interval in the vertical direction may be zero.
A grid pattern is also acceptable.

Further, with respect to the lower limit of the stripe width, for example, in the case of the above-mentioned ordinary high heat insulating product,
When the frequency of the radio wave is 200 MHz, if the width of the groove is 0.5 mm, the heat insulating effect can be expected up to a stripe width of about 3 mm. For example, the division width of the stripe is 2/1000 to 1 of the wavelength λ. It is about / 30. If the width of the interval is made smaller, this lower limit becomes smaller.

[0026]

As described above, according to the present invention, a patterning film is formed on a glass substrate surface by using an ink jet printer or the like, and a functional film is formed on the surface on the patterning film forming side by coating. By removing the functional film together with the patterning film by cleaning the surface of the functional film, a film-dividing method of film-covered glass is used to form a film-cutting pattern. You can easily and surely without a bleeding phenomenon in a pattern-like or dot-like patterning film, and you can also divide the film by an exceptionally hot water washing process, and the boundary of the divided functional film is also aligned and does not give damage, Moreover, it is a method to divide various kinds of beautifully finished films that do not leave debris on the film removal pattern part and do not develop scratches or stains on the glass surface. Furthermore, it does not require a special masking material or work related to masking. For example, it can be performed simply, more efficiently and cheaply, instead of the film division method using a laser, which easily scratches or stains the glass surface. It is possible to provide a useful film-dividing method for a film-coated glass which can be used in a wide range of glass products and can be made into a safe product.

[0027]

An embodiment of the present invention will be described below in detail with reference to the drawings. Example 1 First, a clear glass substrate (Fl3) having a size of about 305 mm x 305 mm and a thickness of about 3 mm is sequentially washed with a neutral detergent, water rinse, and isopropyl alcohol, and dried.

Next, using a conventional ink jet printer, a quick-drying ink containing MEK (methyl ethyl ketone) as a main component of a solvent was applied as a charged ink stream,
A side sectional view of a volcanic linear patterning film 2 on the surface of the glass substrate 1 as shown in FIGS. 1 and 3 in a partially enlarged manner (diameter a = about 0.46 to 0.56 mm, height h = about 1.5 μ) , G
= About 0.5 μ), and the continuous droplets 10 (diameter a = approx.
The linear patterning film 2 having a thickness of 0.46 to 0.56 mm and an overlapping portion e = about 0.4 mm) is formed by rapid drying. The inkjet printer mainly used an ultrasonic signal, a gun body equipped with an ink feed and an ink fried food, a charging signal and a charging electrode, a deflection plate, a gutter (manufactured by Domino).

Then, as shown in FIG.
The film side of the glass substrate 1 with the linear patterning film 2
Approximately 5 vacuum chambers with a vacuum pump on the surface by the sputtering method.
x10 ^-6After degassing to Torr, N₂Introduce gas, 2x10^-3
Hold on Torr (about 70SCCM), 1kW electric power to Ti target
Is applied to transfer the glass substrate with the linear patterning film at the transfer speed.
It moves at a rate of about 42 mm / min, and is a functional film 3 for heat ray reflection etc.
A TiN thin film with a thickness of about 70 nm was formed over the entire surface.

Next, with the surface of the functional film 3 of the glass substrate 1 having the linear patterning film 2 as the upper surface, a nylon brush (manufactured by Toyo Rayon Co., Ltd.) rotated at about 170 RTM with warm water at about 30 ° C. 5 pairs (First, 2 pairs of brush wire diameter about 0.2mm, then 2 pairs of wire diameter about 0.15mm, then wire diameter about 0.1mm
It is put in a washing machine equipped with one pair) and the hot water brush washing is performed with a hot water shower and brushing with a passage time of about 25 seconds.

As a result, as shown in FIG. 5, the linear patterning film 2 and the functional film 3 are simultaneously peeled off from the glass substrate 1 only at the linear patterning film 2 portion of the glass substrate 1, and the linear patterning film 2 is removed. The functional film 3 is removed together with 2 to expose the glass surface, and the TiN thin film, which is the functional film 3 directly coated on the glass surface in the portion where there is no other linear patterning film, remains in the same state as when the film was formed. The divided portion 4 could be formed by the exposed glass surface portion. Note that FIG. 6 collectively shows the manufacturing process of the above-mentioned divided portion.

As shown in FIG. 7, it is a front view showing the heat ray reflective glass 5 having a radio wave transmission characteristic by the above-mentioned division method, in which a pattern divided into horizontal stripes is formed, and a strap of about 20 mm is formed. A width of about 0.5 mm can be created for the dividing groove, the boundaries of the divided functional films are also aligned, the functional film is not damaged, and there is no film residue at the dividing parts. No scratches or stains appear on the glass surface, it finishes neatly and does not require masking material and work related to masking. Simply applying ink and washing with warm water makes the desired division simple, efficient and inexpensive. Further, it was possible to obtain the excellent radio wave transmission type heat ray reflection glass 5 by balancing both the heat ray reflection performance and the radio wave transmission performance in a well-balanced manner.

Example 2 As shown in FIGS. 2 (B), (C) and (D), (B) is a continuous droplet 10 with little overlap, (C) is a continuous droplet 10 in contact with each other, (D) is an enlarged partial view of a linear patterning film composed of free and continuous droplets 10.
The diameter of the droplet 10 was about 0.56 mm or less and about 0.25 mm or more.

FIG. 8 shows the functional film 3 formed by the sputtering method.
In the ITO thin film, which is a comparative example, circular holes 7 having a relatively large area to circular holes 7 having a relatively small area are appropriately combined from dense to coarse, and a blur pattern is formed in Example 1.
3 is a partially enlarged view of a part of an automobile window glass formed by the division method of FIG. 2 and the droplet distribution method of FIG.

The obtained window glass for automobile with a blur pattern
6 is each circular hole 7 provided in the ITO thin film which is the functional film 3.
The boundary of the hole is also aligned, it does not damage the ITO thin film that is a functional film, there is no film remaining at the hole, and it does not cause scratches or stains on the glass surface and it is clean. It is possible to easily and efficiently and inexpensively apply a desired blur pattern by simply applying ink and washing with warm water without the need for masking materials and work related to masking. It can be widely applied to mold heat ray reflective glass and the like.

Example 3 FIG. 9 shows a functional film 3 having a heat ray reflection performance on the upper portion of the glass antenna 9 in order to have both radio wave transmission performance and heat ray reflection performance in an automobile window glass having a glass antenna. , ITO thin film (about 30nm-70nm), TiN thin film (about 70nm), TiN thin film (about 35nm) / TiO thin film (about 30nm), TaO (about 5nm) / T
iNO (about 10 nm) / TaO (about 5 nm) etc.] is removed to show a partially enlarged view.

That is, a linear patterning film is formed on the glass antenna 9 by using the division method of the first embodiment, and the functional film 3 is formed on the entire surface of the glass antenna 9 to cover the glass antenna 9. The functional film 3 can be removed by treating the functional film 3 with hot water for about 10 seconds, followed by brush cleaning and then alcohol wiping, as shown in FIG. The film boundary portion in the divided portion 4 which is the removed portion is also aligned, the functional film and the glass antenna are not damaged, and the film remains at the removed portion, and the glass antenna and the glass surface are not damaged. It does not show any dirt and is beautifully finished. There is no need for masking materials and work related to masking, and it is easy to remove the desired functional film on the glass antenna part simply by applying ink and washing with warm water. In can be performed efficiently and at low cost,
It was possible to obtain the excellent radio wave transmission type heat ray reflection glass 8 with a glass antenna by balancing both the heat ray reflection performance and the radio wave transmission performance in a well-balanced manner.

Example 4 Various functional films formed on the surface of a glass plate, by appropriately combining the division methods including the perforations of the above-described examples, can be applied to various desired shapes, patterns, letters, numbers and the like. When a character-shaped or / and graphic-shaped pattern is provided, the boundary portion of the functional film is aligned, the functional film is not damaged, and no film remains at the divided portion, as in each example. Moreover, it does not cause scratches or stains on the glass surface, it is finished cleanly, no work related to the masking material and masking is required, and only the ink application and hot water washing are performed, and the desired division is simple and efficient and inexpensive. I was able to give it.

[0039]

As described above, according to the present invention,
By simply combining the formation of a patterning film with ink and washing with warm water, the film-dividing method of the film-covered glass is used to form a film removal pattern on the functional film. It is simple and reliable, and even with exceptionally hot water cleaning, the boundaries of the divided functional membranes are aligned and damage is not caused, and debris is not left on the membrane removal pattern portion, and the glass surface is scratched. It is a method of dividing various kinds of films with a clean finish that does not develop stains and stains, and it does not require special masking material or work related to masking, and it can be applied easily and more efficiently at low cost. It is possible to provide a useful film division method for a film-coated glass that can be safely automated and labor-saving and can be adopted for a wide range of glass products.

[Brief description of drawings]

FIG. 1 is a partially enlarged side sectional view showing a state in which a linear patterning film is formed on the surface of a glass substrate in one embodiment of the present invention.

FIG. 2 is a partially enlarged explanatory view showing a state of a linear patterning film formed by ink droplets in one embodiment of the present invention, and (A) is a linear shape in which droplets that are sufficiently overlapped are continuous. Patterning film, (B) a linear patterning film in which small droplets are continuous with a small overlap, (C) is a linear patterning film in which adjacent droplets are continuous, and (D) is a linear patterning film in which separated droplets are continuous. Respectively.

FIG. 3 is an explanatory diagram for further embodying the size of the linear patterning film in FIG.

FIG. 4 is a partially enlarged side cross-sectional view showing a state in which the linear patterning film of FIG. 1 is covered with a functional film.

5 is a partially enlarged side sectional view showing a state in which the linear patterning film is peeled off together with the functional film by performing hot water brushing cleaning from the state of FIG.

FIG. 6 is an explanatory view showing a manufacturing process in the film dividing method of the film-coated glass of the present invention in the form of a flowchart.

FIG. 7 is a front view showing a radio wave transmission type heat ray reflective glass made in Example 1.

FIG. 8 is a partially enlarged plan view showing a window glass for an automobile with a blur pattern formed in Example 2;

FIG. 9 is a partially enlarged plan view showing a radio wave transmission type heat ray reflective glass with a glass antenna formed in Example 3;

[Explanation of symbols]

1 Glass Substrate 2 Linear Patterning Film 3 Functional Film 4 Divided Part 5 Radio Wave Transmissive Heat Ray Reflective Glass 6 Automotive Window Glass with Blurred Pattern 7 Circular Hole 8 Radio Wave Transmissive Heat Ray Reflective Glass with Glass Antenna 9 Glass Antenna 10 Small Droplets

Claims (7)

[Claims] 1. A patterning film made of ink is formed on the surface of a glass substrate, a functional film is formed on the surface on which the patterning film is formed, and then the functional film surface is washed at least. A film-dividing method for film-coated glass, which comprises removing a functional film as well as a patterning film to form a film removal pattern. 2. The film division method for film-coated glass according to claim 1, wherein the patterning film formed of the ink is formed by using an inkjet printer. 3. The method for dividing a film of a film-coated glass according to claim 1, wherein the film-cutting pattern portion is a set of rounded portions and has a linear shape. 4. The film dividing method for film-coated glass according to claim 1, wherein the linear film removal pattern portion has a lattice shape and / or a stripe shape. . 5. The film-forming pattern portion having a linear shape is formed on the heat wire applied to the glass surface or on the antenna conductor, or on and above the heat wire or antenna conductor. 4. The method for dividing the film-coated glass as described in 4 above. 6. The portion of the film removal pattern is a gathering region of rounded portions, and there are rounded portions having different sizes and different densities of the rounded portions, and the rounded portions are present. 6. The method for dividing a film of a film-coated glass according to claim 1, wherein the film is divided from the dense part to the rough part. 7. The method for dividing a film of a film-coated glass according to claim 1, wherein the film-cutting pattern portion has a linear shape, a dot-like character shape, and / or a figure shape. .