JPH0426532A - Ornamental laminated glass - Google Patents

Abstract

PURPOSE:To produce many kinds of ornamental laminated glasses respectively in small amt. by forming one layer of a laminated film constituting the intermediate film with a colored film prepared by electrostatic picture printing. CONSTITUTION:A disperse dye sublimating at >=70 deg.C in the atmosphere among a quinophthalone derivative, an anthraquinone derivative, etc., a fixing agent consisting of an alkyl methacrylate copolymer, etc., a charge control agent such as cobalt naphthenate and a carrier are mixed in a specified ratio to prepare a concd. toner, and the toner is diluted in an org. solvent such as isoparaffinic hydrocarbons to produce a liq. developer. An electrostatic latent image is then formed on an electrostatic recording paper through an electrostatic plotter, brought into contact with the developer and developed. The developed recording paper is firmly held to a transparent polyester film, kept at 160-220 deg.C for 10-60sec and then released to obtain a clear picture pattern on the film. The hot-melt films 4 and 5 of an ethylene-vinyl acetate copolymer, etc., are laminated on both sides of the film 3, and the laminate is sandwiched between two glass sheets 1 and 2 to obtain the laminated glass.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to decorative laminated glass.

(Prior technology) Laminated glass, in which a resin interlayer film is sandwiched between glass plates, is used as safety glass and security glass for automobile glass, building exterior wall glass, residential door glass, etc. due to its impact resistance and penetration resistance. is expanding.

As an advanced application of this technology, laminated glass with colored designs on the interlayer film is being used as decorative laminated glass for building entrances, partition glass, and various interiors.

After forming a design by hand or screen printing on a polyester film that is strong, weather resistant, and transparent, a hot melt film containing an ultraviolet absorber is laminated on both sides of the film, and the laminate is attached to a glass plate. This is done by sandwiching them together and bonding them together under vacuum.

(Problems to be Solved by the Invention) In the above-mentioned pattern forming method, there are some problems when using handwriting, such as requiring artist's talent, not being able to express fine details, and difficult to create multiple sheets, and when using screen printing. , since it requires plate making, it is not suitable for small-scale lofts, and there is a strong need for large-sized and multi-colored products, but it is difficult in terms of cost.

(Means for Solving the Problem) As a result of intensive study, the inventor has determined that
In the sublimation thermal transfer process of the electrostatic image printing method shown in No. 2151, the above problem can be fundamentally solved by using a dyed film created by using a film as the transfer target as one layer of the laminated glass interlayer. This discovery led to the present invention.

(Function) The electrostatic image printing method includes a step of applying an electric field to an electrostatic recording medium to directly form an electrostatic charge image, a step of developing the electrostatic charge image with a liquid developer containing a disperse dye, and a step of developing the electrostatic charge image with a liquid developer containing a disperse dye. This is a textile printing method characterized by having a step of heat sublimation transferring a developed image onto a fabric having dyeability with the above-mentioned disperse dye.

In order to form an electrostatic image directly by applying an electric field to an electrostatic recording medium, wet electrostatic recording type monochrome and color electrostatic propters are preferably used.

When an electrostatic plotter is used, an electrostatic latent image corresponding to a pattern stored as data in a computer can be directly recorded on an electrostatic recording medium and output as an image.

Examples of the electrostatic recording medium used for this include commercially available electrostatic recording paper and electrostatic recording film.

The electrostatic latent image formed on the electrostatic recording medium is developed,
Examples of this developing method include a method in which the surface of an electrostatic recording medium on which an electrostatic latent image is formed is brought into contact with a liquid developer.

This liquid developer can be obtained by replacing the colorant conventionally used as a component of liquid developer for electrostatic recording with a disperse dye. It is composed of a mixture with auxiliary agents such as a charge control agent and a dispersion stabilizer depending on the situation.

The above disperse dyes include, for example, quinophthalone derivatives, anthraquinone derivatives, azo dyes, etc. at atmospheric pressure.
Disperse dyes that sublimate at temperatures of 0° C. or higher are preferably used.

In order to thermally transfer the developed image obtained on the electrostatic recording medium to a fabric having dyeability with the disperse dye by heat sublimation, the developed image is transferred to a polyester material for a short period of time at a temperature of 160 to 220°C for a short period of time, e.g. The contact may be maintained for ~60 seconds.

The above is an overview of the electrostatic image printing method.

The dyed film in the present invention is produced by using a film instead of a fabric in the sublimation thermal transfer step of the electrostatic image printing method.

As a usable film, a polyester film is suitable from the viewpoint of dyeability to disperse dyes and heat resistance.

Disperse dyes dyed on transparent polyester film have excellent transparency, unlike pigment inks that mainly have a hiding function, and when used in the interlayer film of laminated glass, they are almost indistinguishable from cases where the glass itself is colored. .

As the films laminated on both sides of the dyed film, an EVA resin film made of ethylene-vinyl acetate copolymer or the like is suitable from the viewpoint of moisture resistance.

That is, it is formed by forming a film from a heat- or photo-curable resin composition comprising an ethylene-vinyl acetate copolymer mixed with a thermosetting agent such as peroxide or a photosensitizer.

The interlayer film having such a structure is sandwiched between glass sheets, and the laminated glass is bonded by applying heat or light, and further applying pressure as necessary.

(Example) The present invention will be explained in detail below according to examples.

(Preparation of fixing agent) 150 parts by weight of kerosene was charged into a glass container equipped with a reflux condenser, heated to 90°C with stirring, and mixed with 15 parts by weight of methyl methacrylate and 8 parts of 2-ethylhexyl methacrylate.
A monomer solution prepared by dissolving 0.5 parts by weight of benzoyl peroxide in a mixture with 5 parts by weight was added dropwise over a period of 4 hours.

Thereafter, it was heated to 100° C. at a temperature increase rate of 1° C./3 minutes, and was further maintained at this temperature for 4 hours.

After cooling, the contents were taken out to obtain a resin solution having a viscosity of 20 to 100 Stokes.

(Preparation of liquid developer) Disperse dye 100 parts by weight Kayaset Red B manufactured by Nippon Kayaku Co., Ltd. Fixing agent 500 parts by weight Cobalt naphthenate 16 parts by weight Dainippon Ink & Chemicals Co., Ltd. Ill Cobalt naphthinate 6% Isoparaffin type Hydrocarbon 900 parts by weight Exxon Chemical Co., Ltd.! J Isopar G The dye, fixing agent, control agent No. 11, and carrier liquid were uniformly mixed and milled using a ball mill to prepare a concentrated toner.

This l-condensed toner was diluted with the above-mentioned isoparaffinic hydrocarbon (Isopar G) to a nonvolatile content of 12% by weight, and 80 parts by weight of the paste donor was further diluted with 2000 parts by weight of the above-mentioned isoparaffinic hydrocarbon (Isopar G) to form a liquid developer. Manufactured.

Next, electrostatic plotter EP-101 manufactured by Matsushita Transmission Co., Ltd.
Using electrostatic recording paper (Tamako Paper Co., Ltd. 15 PP-1)
30) An electrostatic latent image was formed thereon and developed with the above liquid developer.

The developed electrostatic recording paper was adhered to a 75 micron thick transparent polyester film made by Toshi Co., Ltd., and after heating at 180°C for 30 seconds, the electrostatic recording paper was peeled off. A red pattern was obtained.

Next, both sides of the dyed film obtained in the above operation were
After laminating with a micron-thick EVA hot melt film, it was sandwiched between glass plates to produce a laminated glass using a conventional method.

(Effects of the Invention) According to the present invention, a dyed film with a pattern drawn directly can be easily created by computer operation without the need for a plate-making process, so it is possible to manufacture decorative laminated glass in a wide variety of products, in small quantities, or in single-item production. It became.

[Brief explanation of the drawing]

1st [! 1 is a schematic cross-sectional view of the decorative laminated glass of the present invention. In the figure, 1 and 2 are glass plates, 3 is a dyed film, and 4 and 5 are hot melt films containing an ultraviolet absorber. Symbol 1 in Figure 1; glass plate 2; 3 same as 1; dyed film 4; hot melt film containing ultraviolet absorber 5;

Claims (1)

[Claims] 1. A decorative laminated glass formed by sandwiching an interlayer film in which a plurality of films are laminated, wherein one layer of the film is a dyed film produced by an electrostatic image printing method.