JPS59217644A - Preparation of plate glass with china-painting having restricted surface reflection - Google Patents

Abstract

PURPOSE:In plate glass with china-painting or pattern on the back to be observed from the surface through the plate glass, to prepare plate glass with china- painting having restricted surface reflection, by attaching an ink film containing an acidic alkali fluoride to the surface, calcining it at a specific temperature. CONSTITUTION:The surface of plate glass having china-painting or pattern on the back is coated with an ink film containing an acidic alkali fluoride obtained by combining properly an acidic alkali fluoride as a main component with a resin binder, adding a solvent until it has a suitable viscosity. The adhesion is carried out by a direct printing means such as screen printing, letterpress printing, gravure printing, etc., or transfer printing means, etc. The glass is calcinated at 200-600 deg.C, to give plate glass with china-printing having restricted surface reflection.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a painted glass plate with limited surface reflection, and new products manufactured by the method of the present invention can be used for daily necessities, ornaments, works of art, and office work. When used for supplies, furniture, fixtures, etc., check that there is no reflection of light on the surface.
In addition, because the amount of light is reduced, the user is less likely to be dazzled, and the pictures and patterns on the back of the glass plate stand out beautifully without looking unnatural. It promises to greatly increase and improve practical value.

In order to observe the pictures and patterns on the back side of the glass plate from the front side through the glass plate, the inventors of the invention applied an ink film containing an acidic alkali fluoride to the surface of the glass plate and fired it at 200°C to 600°C. It has now been discovered that it is possible to produce glass plates with limited surface reflection which meet the above objectives.

Hereinafter, the method for manufacturing a painted glass plate with limited surface reflection according to the present invention will be explained in more detail.

First, an ink film containing an acidic alkali fluoride is attached to the surface of a glass plate.

? The acidic alkali fluoride-containing ink in the present invention is based on an acidic alkali fluoride (corrosive agent).
This is mixed with a resin binder as appropriate, and a solvent is added until the appropriate viscosity is achieved.

Acidic alkali fluoride as a main ingredient is acidic sodium fluoride, acidic potassium fluoride, acidic ammonium fluoride, and acidic lithium fluoride alone or in a mixture of two or more, and as a subcomponent, aquapotassium heptadide, 7M potassium earth metal fluoride, aluminum aluminum fluoride, alkali acid sulfate, alkali acid phosphate, alkaline earth metal acid phosphate, m acid yv potassium, sulfamic acid, organic sulfonic acid, organic acid,
There is no problem even if a small amount of an alkali sulphate, an alkaline earth metal organic sulfonate, an alkali organic acid, an alkaline earth metal organic acid, etc. are contained. Acidic alkali fluorides that can be industrially easily converted into ink include acidic sodium fluoride and acidic potassium fluoride.

Examples of resin binders include abrasive resin, vinyl resin,
Amid resin, melamine resin, petroleum resin, varnish 7-ru
l fats, ketone resins, epoxy resins, urea resins, etc. can be used.

As the solvent, methyl M ethyl ketone, toene, xylene, petroleum solvents, etc. can be used.

In addition, in the acidic fluorinated acetate-containing ink, secondary
A reaction lubricant or reaction accelerator may be appropriately mixed as a component. Examples of the reaction facilitator and reaction promoter include alkali acid sulfate, alkali acid phosphate, alkaline earth metal acid phosphate, alkali sulfate, sulfamic acid, organic sulfonic acid, organic acid, alkali sulfamate, and organic sulfonic acid. Acidic salts of alkaline earth metals, alkali organic acids, alkaline earth metal organic acids, etc. can be used.

Methods for attaching the ink containing acidic 7M potassium fluoride to the glass plate include direct printing means such as screen printing, letterpress printing, gravure printing, offset printing, and Takotoro printing, and transfer printing using a transfer sheet on which an ink film has been formed in advance. There are methods such as spraying, brushing, etc.

When using the above-mentioned direct printing means or transfer printing means, fine patterns can be easily formed, and when using transfer printing means, fine patterns can be formed even on glass substrates with complicated shapes. It is possible to easily form various patterns.

In addition, when using the above-mentioned direct printing means, spraying, brush coating, etc., after forming the ink film, the temperature is 40 ° C.
It is preferable to dry it at 50° C. for about 5 minutes to 10 minutes.

Next, the glass plate on which the ink film was formed was heated to goo℃~600°C.
Bake at ℃. By doing this, the acidic alkali fluoride compound in the ink film is thermally decomposed to generate glass corrosive gas, and this gas and glass constituents such as silicon oxide, alkali oxide, lead oxide, etc. ζ causes a chemical reaction, and as a result # fine irregularities are formed on the surface of the glass plate.

BM Note: If the firing temperature is 200°C or lower, the dry corrosion effect of the acidic alkali fluoride cannot be fully exerted and the operation takes time; The temperature should be controlled at 200°C to 600°C, since it causes undesirable fusion of glass and f-shape of the glass.

The method of manufacturing a painted glass plate with limited surface reflection according to the present invention consists of the steps described above, and the glass plate used in this process is a glass plate with a picture or pattern formed on its back surface. It may be a plate or an untreated glass plate, and when an untreated glass plate is used, it is preferable to form a picture or a pattern after performing the above steps.

Further, when carrying out the above process using a glass plate on which a picture or pattern is formed, the picture or pattern may be one that has been painted or fired. When using a glass plate that has not been subjected to painting firing, this painting firing can be carried out at the same time as the firing in the above step, which is preferable.

Furthermore, the present invention? The picture or pattern may be on the entire back side of the glass plate, or it may be on a partial area.

・2 It is preferable from the standpoint of Mizukubo that these pictures and patterns are painted and fired on the glass, but they do not necessarily have to be painted and fired over the entire surface, and can be partially printed or painted. There is no problem even if there is. Furthermore, it may be back-coated or back-treated as appropriate.

Further, the glass plate referred to in the present invention is not limited to being colorless and transparent, but may be slightly colored or transparent, and may have partially opaque or colored areas. Regarding the types of glass plates, there are ordinary plate glass, patterned glass, polished plate glass, float glass,
It can be applied to netted or wired glass, heat ray absorbing glass, colored float glass, irregularly shaped plate glass, tempered glass, decorative glass, etc.

Example t will be explained below, but it goes without saying that the present invention is not limited to these examples. All parts are by weight.

<Example 1> An onyx pattern was transfer-printed on the entire surface of one side of a float glass plate having a thickness of 5 fl and a size of 200×200 wI, and the design was fired in a firing furnace at a temperature of 590° C. for 15 minutes.

Thereafter, a 10 μm thick film was formed on the entire surface of the glass plate by screen printing with an acidic alkali fluoride-containing ink having the following composition (1) on the back surface of the glass plate, and a non-reflection treatment was performed in a firing oven at a firing temperature of 280° C. for 80 minutes.

(2) Composition of ink containing acidic fluoride and alkali In this manner, a glass plate with a beautiful onyx pattern having a transparent and non-reflective surface was obtained.

<Example 2> A floral pattern film was formed by partially transfer printing a floral pattern on one side of a decorative glass with a thickness of 5 mm and a size of 8001 nI x 300 Mjl. Thereafter, an acidic alkali fluoride-containing ink having the following composition (1) was transferred and printed over the entire surface of the decorative glass to form a film with a thickness of 8 μm. Further, the glass plate was fired in a firing furnace at a temperature of 580° C. for 80 minutes and subjected to surface anti-glare treatment at the same time.

(2) Composition of ink containing acidic fluoride resin In this way, a decorative glass plate was obtained which maintained the original transparency of glass and had a beautiful flower pattern with limited surface reflection.

<Example 8> On one side of a slightly blue colored glass plate with a thickness of 1Qjll and size 30011
A film of 0 μm was formed and dried at a temperature of 40° C. for 5 minutes. Thereafter, the glass plate was fired at a temperature of 800° C. for 20 minutes. Furthermore, a human pattern was partially formed on the back surface of the colored glass plate by screen printing, and firing was performed at 600° C. for 10 minutes to obtain a colored glass plate having a human pattern with limited surface reflection.

(2) Acidic Fluoride 7LJ'Potassium-Containing Ink Composition Since the present invention has the structure described above, the painted glass plate product obtained by the present invention is as follows.

In other words, one side (back side) of the glass plate has the required pattern,
Patterns such as celestial bodies, rocks, minerals, animals, plants, people, seafood, machinery, transportation equipment, products, characters, landscapes, food, medicine, etc.
Calligraphy, paintings, photographs, etc. are painted and fired, and the other side (surface) of the glass plate has a relatively smooth surface that has undergone dry corrosion using acidic fluoroalkali II, which has been appropriately adjusted to limit surface reflection. A rough surface is formed. Therefore, the painted glass plate product according to the present invention is free from unnecessary reflection of light rays on the glass surface, recognition of unnecessary optical path difference due to the thickness of the glass plate, unnecessary interference of light by the glass plate, diffraction, aberration, and the glass plate. Unnecessary distortions, etc. on the surface are hidden to a considerable extent from the viewer, and the necessary pictures and patterns on the surface can be seen by the viewer in a very gentle and beautiful appearance.

Therefore, by applying the present invention to various products, the practical value thereof can be greatly enhanced and the present invention has extremely high industrial utility value.

patent applicant Nissha Printing Co., Ltd.

Claims (1)

[Scope of Claims] (1) In a glass plate for observing pictures and patterns on the back side of the glass plate from the front side through the glass plate, an ink film containing an acidic alkali fluoride is adhered to the surface of the glass plate at 200°C.
A method for manufacturing a painted glass plate with limited surface reflection, characterized by firing at a temperature of ~600°C. (2) When attaching an ink film containing an acidic alkali fluoride to the surface of a glass plate and baking it at 200C to 600C,
A method for manufacturing a glass plate with limited surface reflection according to claim 1, characterized in that a glass plate having a picture or pattern formed on the back side of the glass plate is used. (3) Claims characterized in that an ink containing an acidic alkali heptadide is applied to the surface of a glass plate and fired at 200°C to 600°C, and then a picture or pattern is formed on the back side of the glass plate. A method for manufacturing a painted glass plate with limited surface reflection as described in item 1. ((Roll) Painted glass with limited surface reflection as set forth in claim 2, characterized in that the glass plate on which a picture or pattern is formed on the back side of the glass plate is one that has been subjected to painting firing. Method for manufacturing a plate. (5) Limiting surface reflection as set forth in claim 2, characterized in that the glass plate on which the pattern is formed on the back side of the glass plate is not subjected to painting firing. A method for producing painted glass plates.