JPH1060141A - Article having antifogging effect in pattern form and process for preparing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an article having an antifogging effect in a pattern form which has a high design which intentionally utilizes fogging created by dew condensation to allow a letter, a figure or the like to rise, and to provide a process for preparing the same. SOLUTION: This article is a see-through article through which light is passed or a reflective article from which light reflects, wherein the surface has been subjected to antifogging treatment in a pattern form to provide an antifogging effect in a pattern form. (1) The surface of the article is subjected to antifogging treatment in a pattern form to impart an antifogging effect in a pattern form, (2) a film having antifogging properties is applied patternwise to the surface of the article, (3) a pattern of a non- antifogging coating is formed on the see-through or reflective article in its surface subjected to antifogging treatment, (4) a light beam, a radiation, an electron beam, or plasma is applied patternwise to the see-through or reflective article in its surface subjected to antifogging treatment to form a pattern of an non-antifogging coating, or (5) a light beam, a radiation, an electron beam, or plasma is applied patternwise to the see-through or reflective article in its surface to form a pattern of an antifogging coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article having a pattern-like anti-fog effect and a method for producing the same, and more particularly, to glass and transparent plastic used for windows and show windows, and to the inside of show cases and glass cups. TECHNICAL FIELD The present invention relates to an article having a pattern-like anti-fog effect capable of imparting a high design property by using a change in temperature and humidity to a see-through article or a mirror or other reflective article having a high surface luminance that can see through.

[0002]

2. Description of the Related Art In a humid environment or an environment with a large temperature difference, articles such as windows, show windows, show cases, etc., which require transparency, and articles, such as mirrors, which require reflectivity, become cloudy due to dew condensation. However, various types of fogging prevention measures have been taken since the image cannot be seen through or the image cannot be confirmed.

[0003] As described above, in these transparent articles or reflective articles, the transparency or reflectivity of the articles is often the basic performance of these articles themselves, and is caused by condensation of water vapor in the air. The occurrence of diffuse reflection of transmitted light, that is, the occurrence of fogging, is often a major drawback in these articles.

As a general means for preventing such fogging, for example, a method of applying a weak current to these transparent articles or the like to heat them to prevent fogging, or disposing a heating element near the transparent article. There is a method of preventing fogging by the heat, a method of forcibly creating a flow of air near the surface of the transparent article to prevent fogging, or a method of using these in combination. In any of the above-mentioned methods, it is necessary to previously arrange these articles in a structure suitable for anti-fog, which is generally expensive.

[0005] Further, the method of heating by applying a weak current to these transparent articles and the like and the method of heating from near by using a heating element require special care to prevent electric leakage. It is necessary to adopt a simple structure and the running cost is high.

On the other hand, as a simple method, a method of applying a paint having an anti-fogging effect by spray coating (for example, a product name "Kuronai Spray" manufactured by RP Topura Co., Ltd.) or a film having an anti-fogging property is used. Although a method of sticking to these articles has also been adopted, all of these methods have a short life span of the anti-fog effect, and their application range is extremely limited.

[0007] A method has also been adopted in which an antifogging paint is directly applied to the surface of an article to prevent fogging. As a method for producing these antifogging coatings and antifogging articles, for example, Japanese Patent Application Laid-Open
JP-A-181586 discloses an anti-fogging coating that is capable of increasing the water resistance and surface hardness by crosslinking hydrophilic polyvinyl alcohol with a crosslinking agent such as a silane coupling agent, and providing good adhesion. JP-A-56-159231 discloses an antifogging article in which a surfactant is added to a relatively hydrophilic polyol-modified melamine resin.

However, in any of the above methods, the anti-fog effect is exerted over the entire surface of the transparent article or the reflective article. That is, fogging due to dew condensation is a technology based on the recognition that it only lowers the performance of an article, and it is intended to further utilize the fogging caused by dew condensation to further improve the design of the article. There is no intention to do so.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned facts, and has as its object to positively utilize the fogging caused by condensation to form patterns such as characters and patterns. It is an object of the present invention to provide an article having an antifogging effect in a pattern having a high design and floating, and a method for producing the same.

[0010]

According to the present invention, the surface of a transparent article through which light is transmitted or a reflective article through which light is reflected is prevented in a pattern formed by a pattern-like anti-fog treatment. The gist is an article having a fogging effect.

The transparent article through which the light is transmitted is not particularly limited. For example, a transparent article such as a window glass, a partition, etc., which can receive light or can be seen through the article, a frozen showcase, Glasses, other translucent inorganic materials, plastics, etc., such as glass, other translucent inorganic materials, plastic, etc. And other materials capable of transmitting visible light, such as light-transmitting organic materials. Here, the visible light does not need to be all of the visible light, and may be capable of transmitting a part of the visible light.

The reflective article which reflects light is not particularly limited, and may be, for example, a mirror, but may also be polished and glossy metal, glass, metal-deposited plastics, or the like. , Which indicates the presence of clouding due to condensation.

The above-mentioned pattern refers to a character or a pattern for the purpose of display or decoration effect. In addition, the anti-fog treatment is a means for increasing the wettability of the surface of the article and, when water vapor in the air is condensed, making the condensed water less likely to spread on the surface of the article and form water droplets. It refers to a means for providing a water-absorbing layer so that when water vapor in the air condenses, the condensed water is absorbed by the water-absorbing layer, making it difficult to form water droplets.

According to a second aspect of the present invention, there is provided a pattern-like pattern, wherein a paint having anti-fog properties is applied in a pattern to the surface of a transparent article through which light is transmitted or a reflective article through which light is reflected. In addition, a gist of the present invention is a method of manufacturing an article having an antifogging effect.

The paint having anti-fogging properties is not particularly limited. For example, a paint mainly containing a water-absorbing or hydrophilic polymer such as polyvinyl alcohol, polyvinylpyrrolidone, cellulose, polyurethane, etc. Examples thereof include resins obtained by adding a surfactant to a resin. Commercially available paints having these antifogging properties include, for example, "Sekisui Chemical Co., Ltd., trade name" Sekisui Coating Antifog Agent ", Kyoeisha Chemical Co., Ltd., trade name" U-LIGHT "
T171 ", manufactured by Corkitec Co., Ltd., trade name" Corki No.
500 series "and the like.

Means for applying the above-mentioned antifogging paint in a pattern is not particularly limited, but may be, for example, a screen printing method, a gravure printing method, a coating printing method using a pattern mask or a spray printing method. And the like. Note that the pattern mask may be a sheet or plate made of various materials such as paper, plastics, and metal, or may be formed by painting such as strippable paint.

According to a third aspect of the present invention, there is provided a pattern-shaped film comprising a film having an antifogging property attached to a surface of a transparent article which transmits light or a reflective article which reflects light. In addition, a gist of the present invention is a method of manufacturing an article having an antifogging effect.

The film having anti-fogging properties is not particularly limited, but examples thereof include hydrophilic cellulosic films such as cellophane, polyethylene, polypropylene, and the like.
Examples thereof include a film in which a surfactant is added to a synthetic resin such as a vinyl chloride resin and polyethylene terephthalate, and a film in which a coating-type anti-fog treatment agent is applied to the synthetic resin film. Commercially available films having these antifogging properties include, for example, Dai Nippon Printing Co., Ltd., trade name "Milampa", RP Topla Co., Ltd., trade name "Kuronai Film", Sony Chemical Co., Ltd. Product name “RIVEX-”, manufactured by Riken Vinyl Industry Co., Ltd.
AF ", manufactured by Nippon Sheet Glass Co., Ltd., trade name" Percoat AF ",
Product name "V" manufactured by FILM SPECIALIIES
ISTEX ”and the like.

The means for cutting the film having anti-fog properties into a pattern is not particularly limited. For example, a cutting machine (product made by Sekisui Chemical Co., Ltd .; The name “Sekisui Cutting Machine 920F” or the like is preferably used. Also, a cut is made in a pattern on the film having anti-fogging properties, and after attaching the film having anti-fogging properties to the surface of a see-through article or a reflective article, only unnecessary portions of the film are peeled off. It may be made to remove.

The means for affixing the film having antifogging properties to the surface of the see-through article or the reflective article is not particularly limited. For example, the means may be attached with an adhesive. The pressure-sensitive adhesive layer may be provided in advance on the back surface of the film having anti-fogging properties, and the pressure-sensitive adhesive layer may be adhered by pressing on the surface to be adhered. It may be attached with a double-sided adhesive tape interposed between the back surfaces.

When the film having anti-fogging property is provided with an adhesive layer in advance, the film having anti-fogging property is cut into a pattern and then the pressure-sensitive adhesive layer laminated on the back surface is placed on the front surface. And temporarily attached to a so-called application tape used to cleanly adhere to the surface of a transparent article or a reflective article as an adherend, and temporarily attaches this to the surface of the transparent article or the reflective article. After the transfer, the application tape alone may be peeled off and adhered.

According to a fourth aspect of the present invention, a non-fog-resistant coating is formed in a pattern on the anti-fog surface of a light-transmitting transparent article or a light-reflecting reflective article. The gist is a method for producing an article having an anti-fog effect in a pattern.

The anti-fogging surface of the light-transmitting transparent article or the light-reflecting reflective article is a surface which has been subjected to an anti-fogging treatment so as to prevent condensation on the surface of the transparent article or the reflective article. However, if the surface itself of the see-through article or the reflective article is made of an anti-fogging material, it is not particularly necessary to perform anti-fogging treatment. The means for the anti-fogging treatment is not particularly limited, but may be, for example, the anti-fog treatment used on the surface of a transparent article through which light is transmitted or a reflective article which reflects light. A method of applying or affixing a paint or a film having a fogging property is exemplified. The application or attachment of the paint or film having anti-fogging property may be performed on the entire surface of the see-through article or the reflective article, but the part excluding the part where a non-fogging film described below is formed. It may be applied or affixed only to them.

The non-fog-resistant coating is not particularly limited. For example, a coating formed of a usual acrylic paint, silicone paint or urethane paint to which no anti-fogging property is imparted, or affixed. And synthetic resin films such as polyethylene, polypropylene, vinyl chloride resin and polyethylene terephthalate. The coating or film is desirably colorless and transparent. When the transparent article or the reflective article is not condensed, these non-fog-resistant coatings are not recognized, but are confirmed as a uniform surface. This is because a high design effect of being performed is exhibited.

According to a fifth aspect of the present invention, light, radiation, an electron beam or plasma is irradiated in a pattern onto the anti-fogging surface of a transparent article which transmits light or a reflective article which reflects light. A method for producing an article having a pattern-like anti-fogging effect, characterized by forming a non-fog-preventing film in a pattern-like manner.

The anti-fogging surface of the light-transmitting transparent article or the light-reflecting reflective article refers to the anti-fogging paint or film used in claim 2 or 3. Refers to the surface applied or affixed. The surface subjected to the anti-fogging treatment exhibits anti-fogging properties by its polarity or hydrogen bond, or by bleeding to the surface of the added surfactant. Irradiation with radiation, electron beam, or plasma causes crosslinking or modification of the synthetic resin or the like constituting the anti-fogging surface, and loses its anti-fogging property.

According to a fifth aspect of the present invention, the transparent article or the reflective material is irradiated by irradiating a light beam, a radiation, an electron beam or a plasma using a pattern mask or the like by utilizing the characteristics of the surface subjected to the anti-fog treatment. A non-fog-resistant coating is formed in a pattern on the anti-fog surface of the article.

According to a sixth aspect of the present invention, a non-fogging surface of a transparent article through which light is transmitted or a reflective article through which light is reflected is irradiated with light, radiation, an electron beam or plasma in a pattern. A method for producing an article having a pattern-like antifogging effect, characterized in that a film having an antifogging effect is formed in a pattern form.

The non-fog-preventing surface of the light-transmitting transparent article or the light-reflecting reflective article is particularly the surface of glass, plastic, mirror, or the like that has not been subjected to anti-fog treatment, or the aforementioned. Refers to the surface on which the paint or film used in claim 4 is applied or affixed. The non-fogging surface is oxidized by oxygen in the air by irradiating the surface with actinic rays such as ultraviolet rays, radiation, an electron beam or plasma to irradiate the synthetic resin or the like constituting the non-fogging surface with air. Activated to obtain anti-fogging properties.

The present invention according to claim 6 utilizes an activation reaction such as oxidation of an organic polymer substance by irradiation with actinic rays such as ultraviolet rays, radiation, electron beams or plasma,
A pattern mask or the like is used to irradiate light, radiation, an electron beam or plasma to form an anti-fogging film in a pattern on the surface of the transparent article or the reflective article.

Since the article having an anti-fog effect in the form of a pattern according to the first aspect of the present invention is configured as described above, the pattern of the target character or pattern floats due to dew condensation. It becomes an article. Moreover, when the pattern is a character or a pattern for the purpose of decorative effect, by appropriately changing the environment such as light, temperature and humidity,
The decoration effect can be further enhanced.

The method for producing an article having a pattern-like antifogging effect according to the second aspect of the present invention is configured as described above. Therefore, when a transparent paint having antifogging properties is used, the above-mentioned method is carried out due to dew condensation. It is possible to obtain an extremely highly designed article in which a pattern such as a target character or pattern floats only when the surface of the article is clouded by a very simple method.

The method for producing an article having a pattern-like antifogging effect according to the third aspect of the present invention is configured as described above, so that when a film having a transparent antifogging property is used,
It is possible to obtain, by a very simple method, an article having an extremely high design property in which a pattern such as a target character or pattern floats only when the surface of the article becomes cloudy due to condensation.

The method for producing an article having a pattern-like anti-fog effect of the invention according to claim 4 is configured as described above, so that the surface of the anti-fogging treated transparent article or reflective article is By simply applying or sticking a pattern such as a character or a pattern made of a non-fog resistant paint or a synthetic resin film, an article exhibiting extremely high designability is obtained by a very simple method by fogging due to condensation. be able to.

The method for producing an article having a pattern-like antifogging effect according to the fifth aspect of the present invention is configured as described above. Irradiation of actinic rays such as ultraviolet rays, radiation, electron beams or plasma into a pattern enables a non-fog-resistant film to be formed in a pattern by a cross-linking reaction or the like. Can be obtained.

The method for producing an article having an anti-fog effect in a pattern according to the invention of claim 6 is configured as described above, and therefore, the ultraviolet ray or the like is patterned on the surface of a transparent article or a reflective article. By irradiating with actinic rays, radiation, electron beams or plasma, it is possible to form an anti-fog coating in a pattern on the irradiated part by an activation reaction such as an oxidation treatment. ,
An article exhibiting extremely high design properties can be obtained.

[0037]

BEST MODE FOR CARRYING OUT THE INVENTION

(Example 1) A 15-point letter "A" was applied to a transparent polyethylene terephthalate film (manufactured by Kuraray Co., Ltd.) having a thickness of 100 μm by using a gravure printing machine with an antifogging paint (manufactured by Kokitec Co., Ltd.). Is printed on the printed surface with a 120 W high-pressure mercury lamp.
Irradiation at 00 mJ / cm ² was performed to obtain an article having a pattern-like antifogging effect.

When the obtained article having an antifogging effect in a pattern was left in a room at a temperature of 23 ° C. and a humidity of 50% RH, and when the air was blown, only the printed character “A” did not fog. It was raised and visible, and the opposite surface could be seen through the part. (Example 2) A 15-point letter "A" was applied to a transparent polyethylene terephthalate film (manufactured by Kuraray Co., Ltd.) having a thickness of 50 μm by using a gravure printing machine with an antifogging paint (manufactured by Koki Tech Co., Ltd.). And print
Next, the printing surface was coated with a 120 W high-pressure mercury lamp at 1000
mJ / cm ² light irradiation, and then, on the surface opposite to the printed surface of the film, a 55 μm-thick heat-activated non-support double-sided adhesive tape (trade name “Sekisui Double Tack Tape #, manufactured by Sekisui Chemical Co., Ltd.) 540 ") was thermally bonded and affixed to a dressing table mirror to obtain an article having a pattern-like antifogging effect.

After leaving the obtained article having an antifogging effect in a pattern in a room at a temperature of 23 ° C. and a humidity of 50% RH, when the exhalation was blown, only the printed character “A” did not fog, It was able to stand out and be visible, and obtain a video that attracted the attention of people.

Example 3 An anti-fog film (RP Co., Ltd., trade name "Kokuranai Film") was cut into 30 points by a cutting machine (Sekisui Chemical Co., Ltd., trade name "Sekisui Cutting Machine 920F"). Cut the letter "A" and transfer the sheet for marking film transfer (Sekisui Chemical Co., Ltd., trade name "Sekisui Application Tape #
555 ”), transparent glass for construction (Asahi Glass Co., Ltd.)
Then, the sheet for marking film transfer was peeled off to obtain an article having a pattern-like antifogging effect.

When the obtained article having an antifogging effect in a pattern was left in a room at a temperature of 23 ° C. and a humidity of 50% RH, the exhalation was blown. It was raised and visible, and the opposite surface could be seen through the part.

(Example 4) Polymethylmethacrylate (trade name "Delpet LP-1", manufactured by Asahi Kasei Kogyo Co., Ltd.) was applied to an anti-fog film (trade name "Milampa", manufactured by Dai Nippon Printing Co., Ltd.).
0 g to 200 g of 2-butanone (manufactured by Nakarai-Tex Corporation)
The non-fog-proof 30-point letter "A" was printed on the solution dissolved in the above using a screen printer to obtain an article having a pattern-like antifogging effect.

After leaving the obtained article having an anti-fog effect in a pattern in a room at a temperature of 23 ° C. and a humidity of 50% RH, when the air was blown, only the printed character “A” was not clouded, It was raised and visible, and the opposite surface could be seen through the part.

Example 5 An anti-fog film (manufactured by Dai Nippon Printing Co., Ltd., trade name "Milampa") was coated on a surface of aluminum 3
A 0-point character "S" was covered with a pattern mask punched out, irradiated with an electron beam of 20 Mrad by an electron beam irradiation device (manufactured by Nissin High Voltage), washed with running water for 1 minute after irradiation, and then The film was stuck on the outer peripheral surface of the transparent glass cup to obtain an article having a pattern-like antifogging effect.

When ice water is injected into the obtained article having an antifogging effect in a pattern in a room atmosphere at a temperature of 28 ° C. and a humidity of 65% RH, the antifogging film portion does not substantially condense, and an electron beam is formed. Only the portion of the letter "S" irradiated with was clouded and emerged and could be visually recognized.

(Example 6) A 100-μm transparent polyethylene film (manufactured by Sekisui Chemical Co., Ltd., trade name “Polylon film”) was covered with a pattern mask of 30 points made of aluminum and stamped with the letter “S”. The film was irradiated with an electron beam of 2 Mrad by an electron beam irradiation device (manufactured by Nissin High Voltage Co., Ltd.), and then the film was stuck on the outer peripheral surface of a transparent glass cup to obtain an article having a pattern-like antifogging effect.

When ice water is injected into the obtained article having a pattern-like antifogging effect in a room atmosphere at a temperature of 28 ° C. and a humidity of 65% RH, the portion of the letter “S” irradiated with the electron beam is substantially formed. The other portion was cloudy, the letter "S" was raised and could be visually recognized, and the inside could be seen through the portion.

[0048]

The article of the present invention having a pattern-like antifogging effect is an article having a very high design property in which a pattern such as a target character or pattern is floated due to dew condensation. Moreover,
When the pattern is a character or a pattern for the purpose of a decorative effect, the decorative effect can be further enhanced by appropriately changing the environment such as light, temperature and humidity. In the method for producing an article having an anti-fogging effect in a pattern according to the present invention, it is possible to produce an article having an anti-fogging effect in a pattern in which the above-mentioned high design effect can be expected by extremely simple means.

Claims (6)

[Claims] 1. An article having a pattern-like antifogging effect in which the surface of a light-transmitting transparent article or a light-reflecting reflective article is subjected to a pattern-like antifogging treatment. 2. An article having an anti-fogging effect in a pattern, wherein a paint having anti-fog properties is applied in a pattern on the surface of a transparent article through which light is transmitted or a reflective article which reflects light. Manufacturing method. 3. An article having an anti-fogging effect in a pattern, wherein a film having an anti-fogging property is stuck on the surface of a transparent article through which light is transmitted or a reflective article which reflects light. Manufacturing method. 4. An anti-fog coating formed in a pattern on the anti-fogging surface of a transparent article through which light is transmitted or a reflective article which reflects light. A method for producing an article having a fogging effect. 5. A non-fogging coating by irradiating a light ray, a radiation, an electron beam or plasma in a pattern on the anti-fogging surface of a transparent article which transmits light or a reflective article which reflects light. A method for producing an article having a pattern-like antifogging effect, characterized by forming a pattern in a pattern. 6. A non-fogging surface of a transparent article which transmits light or a reflective article which reflects light is irradiated with light, radiation, electron beam or plasma in a pattern to form an anti-fog coating. A method for producing an article having an antifogging effect in a pattern, wherein the article is formed in a pattern.