JPH02235626A - Decorative article having metal feeling - Google Patents

Abstract

PURPOSE:To express calm genuine metal gloss having depth by bonding a shrinkable thermoplastic synthetic resin film having a metal powder vapor-deposited thereon under vacuum to a laminate of a base material and a thermoplastic synthetic resin and forming a uniform fine strain pattern between the film and the metal layer by direct ray heating due to a far infrared heater. CONSTITUTION:As the base material 5 of a decorative article such as wallpaper, fire-retardant paper or non-combustible paper is most pref. and a thermoplastic synthetic resin 4 composed of a vinyl chloride resin is laminated to the base material, for example, by a calendar method. Next, a heat-shrinkable thermoplastic synthetic resin film 1 composed of unplasticized polyvinyl chloride, polyethylene, polyvinyl alcohol or acrylic resin having a metal powder 2 of aluminum or chromium vapor- deposited thereon under vacuum is thermally laminated to the thermoplastic synthetic resin layer using a hot melt adhesive 3 such as polyurethane or acrylic resin. Subsequently, this laminate is heated to the m.p. of the film or higher by the direct ray heating from the surface thereof due to a far infrared heater system to generate a uniform fine cracked strain pattern at the contact part of the film and the metal layer vapor-deposited thereon due to the difference between the heat shrinkage factors of both of them and a decorative article having deep and calm metal gloss can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a metal-like decoration used for wall covering materials or ceiling materials.

(Conventional technology) Traditionally, decorations such as wallpaper to express a metallic feel have been made by applying a silver pigment made of aluminum powder to a printing ink on a thermoplastic synthetic resin such as vinyl chloride resin laminated on a base material. A sheet-like material made by mixing and printing or forming a layer of thermoplastic synthetic resin such as vinyl chloride resin mixed with silver pigment on a base material, which is processed by gravure printing, heat embossing, etc. Alternatively, it is generally known that a polyester resin film made of vacuum-deposited aluminum powder is laminated with an adhesive on a thermoplastic synthetic resin layer such as vinyl chloride resin, and then simple processing such as gravure printing or hot embossing is performed. Problems to be Solved by the Invention> These metal-like decorations obtained by the prior art have the following problems:
First, prints are made by mixing a silver pigment made of aluminum powder with printing ink on a thermoplastic synthetic PIi resin such as vinyl chloride resin laminated on a base material such as flame retardant paper. For this reason, aluminum powder with a large particle size that tends to produce a metallic luster cannot be used, and its use is limited to aluminum powder with a small particle diameter that lacks a metallic luster.Also, it is difficult to use aluminum powder with a large particle diameter that tends to produce a metallic luster. When using a thermoplastic synthetic resin layer as a base material, the aluminum powder is covered with the thermoplastic synthetic resin, which usually results in poor color development due to dullness. Decorations with metallic luster are 1!
}I couldn't do it. In addition, when a polyester film made of vacuum-steamed aluminum powder is laminated with an adhesive on a thermoplastic synthetic resin layer such as vinyl chloride resin, and the film is gravure printed or heat embossed, the volume film is thermosetting. Ordinary heat embossing or the like does not produce a three-dimensional, acute-angled uneven pattern, and since the vapor deposited layer remains unchanged, only a shiny metallic texture with no depth can be obtained during vapor deposition.

1,000 Steps to Solve the Problems) The present invention solves the above problems by using paper, cloth,
Non-plastic polyvinyl chloride, in which a thermoplastic synthetic resin layer such as vinyl chloride resin is provided on a base material -F such as a non-woven fabric, and metal powder such as aluminum or chromium is further vacuum-deposited on the surface.
A heat-shrinkable thermoplastic synthetic resin film (hereinafter referred to as the film) such as ethylene/vinyl alcohol or acrylic is layered with an adhesive interposed. When this is directly heated using a far-infrared heater method, a difference in thermal expansion/contraction rate occurs between the film and the vapor-deposited metal layer, resulting in uniform and fine cracks in the vapor-deposited metal layer, which has a low thermal expansion/contraction rate. A crooked pattern is formed. In other words, the film heated by direct heating using a far-infrared heater tries to shrink, but metal layers such as aluminum and chromium, which have a small coefficient of thermal expansion and contraction, cannot keep up with the shrinkage of the film, and moreover, the film shrinks due to the adhesive. Because it is fixed to thermoplastic resin such as vinyl chloride resin that is laminated to the material, misalignment occurs between the film and the metal layer such as aluminum or chrome, which creates a pattern of fine cracks and deep cracks. A product with a certain subdued metallic luster is obtained. Furthermore, by embossing this, a metal-like decoration with an acute uneven pattern can be obtained.
Colored printing ink such as polyurethane is printed in a pattern using gravure printing, etc., and then heated with a far-infrared heater or embossing after heating to form a pattern between the film and the steamed metal layer. By forming a uniform crack pattern, a product with a deep and calm metallic luster can be obtained. Furthermore, by adding embossing, it is possible to obtain metal-like decorations with sharp uneven patterns. The present invention will be described in detail as follows. First, combustible paper or non-combustible paper is most suitable as a base material for decorations such as wallpaper, and a thermoplastic synthetic resin such as vinyl chloride resin is laminated on this base using a known method such as a calendaring method. . Note that this thermoplastic synthetic resin layer is preferably non-foamable in terms of adhesive strength and shape maintenance. Next, a heat-shrinkable plastic synthetic resin film such as unplasticized polyvinyl chloride, ethylene/vinyl alcohol, or acrylic on which metal powder such as aluminum or chromium has been vacuum-deposited is coated with a photomelt adhesive such as polyurethane or acrylic. It is then thermally laminated onto a thermoplastic synthetic resin layer. Note that it is convenient for the work to apply the adhesive in advance to the metal layer that has been steamed on the film using gravure coating or the like. Next, this laminate is directly heated from the surface using a far-infrared heater method to a temperature higher than the melting point of the film, such as 170°C or higher in the case of unplasticized polyvinyl chloride and acrylic, and 230°C in the case of ethylene vinyl alcohol. By heating the film to a higher temperature, a uniform fine crack-like strain pattern is created at the contact point between the film and the metal layer deposited on it due to the difference in thermal expansion/contraction rate, creating a deep crack pattern that has never been seen before. Decorations with metallic luster can be made. By carrying out embossing after heating, it is also possible to obtain a decorative object with a metallic luster and a sharp uneven feel.
In addition, if the film, which is the surface layer of the above laminate, is printed with a colored printing ink such as polyvinyl chloride, acrylic, or polyurethane in a pattern using a method such as gravure printing, a far-infrared heater may be used. By heating the film above its melting point using direct heating in this method, a uniform crimp pattern is formed over the entire surface, unlike in the non-printing case described above. In other words, since the heat absorption rate is different between the pattern-printed area and the non-printed area, the distortion generated by heating starts from the printed area with a high heat absorption rate and gradually moves to the non-printed area. The higher the heat absorption rate, the larger the distortion, so the distortion in the printed area is large, and the distortion in the non-printed area is small.This creates a distortion pattern that matches the printed pattern, making it possible to create decorations with a deep metallic luster. can get. Furthermore, by performing embossing after heating, a decorative object with metallic luster in a pattern with sharp unevenness can be obtained, which further improves the design. It should be noted that the thermoplastic synthetic resin film on which the metal powder is vacuum-deposited used here is preferably one that has been formed into a film using a two-wheel stretching method. Generally, methods for forming thermoplastic synthetic resins into films include biaxial stretching, uniaxial stretching, and non-stretching. The films obtained with these formulations differ somewhat depending on the conditions, but most of them have the property of shrinking due to heat, and in the present invention in particular, the shrinkability of the thermoplastic resin film in the longitudinal and lateral directions due to heating plays a major role.

That is, the formation of the crack pattern in the present invention is to create distortions in the metal layer deposited on the film layer by utilizing the heat shrinkability of the thermoplastic synthetic resin film. Thermal shrinkage rate greatly affects the shape stability of the crimp pattern formed.

According to the results of intensive studies by the present inventors, films with a vertical and horizontal thermal shrinkage rate difference of 3% to 5% under heating conditions of 140°C and 1 hour can stably form a crimp pattern. However, if the crimp pattern is smaller or larger than this, there will be directionality in the crimp pattern, and the crimp pattern will be uneven in size, making it difficult to obtain a stable result. It turned out that it is not desirable to use it as a decoration. Therefore, it is preferable that the thermoplastic synthetic resin film used in the present invention has a vertical and horizontal thermal shrinkage rate difference in the range of 3% to 5% when heated at 140°C for 1 hour, and films that meet this condition are manufactured. The appropriate method is the two-wheel stretching method. As for the heating method, far-infrared heaters such as electric tube heaters or ceramic heaters are used. This is because it is applied only to the film layer. In other words, by minimizing changes due to heat to the vapor deposited layer and thermoplastic synthetic resin layer below the film and heating and melting the film above it, distortions that occur when the film is formed by two-wheel stretching are eliminated. This is to encourage movement toward resolution. As a result, a crack-like strain pattern can be formed between the metal vapor deposited layer and the film layer. It should be noted that when heating in an atmosphere using other heating methods such as a hot air constant temperature bath method, heat is applied to the entire laminate, so the above-mentioned crack-like distortion pattern does not occur.

Effects of the Invention> As described above, the present invention adheres a heat-shrinkable thermoplastic synthetic resin film in which metal powder such as aluminum or chromium is vacuum-deposited on a laminate of a base material and a thermoplastic synthetic resin. , which uses direct heating with a far-infrared heater to form a uniform, fine strain pattern between the film and the metal layer, creating a deep and calming real metallic luster that was previously unseen. You can get something. Furthermore, by printing or embossing, it is possible to easily and stably create designs that are impossible to express with real metal, which greatly expands the scope of its use as decorative objects such as wall coverings. It can be expanded. <Example> A wall covering material manufactured according to the recipe stated in claim 2 will be described as an example. A synthetic resin layer 4 is formed by laminating a 015ma+ sheet produced by a calendering method using a vinyl chloride resin composition having the composition shown in Table 1 on the flame retardant paper 5.
was formed. Table - ■ Resin... PVC IoO part Plasticizer... D O P 65 parts Filler...
...CaCOs 30 parts Stabilizer...Zn-based 3 parts Flame retardant...Pb. 0. Part 5 Pigment...
・Tie. Part 10 Next, a polyurethane hot melt adhesive was applied using a gravure roll onto the metal vapor deposited layer 2 of the laminated film in which aluminum powder was vacuum vapor deposited on an ethylene/vinyl alcohol based thermoplastic synthetic resin film l (trade name: EVAL). (Coating @: 20g/m 1 )
An adhesive layer 3 was formed and adhered to the above vinyl chloride resin laminate by thermal lamination. Furthermore, a polyurethane printing ink containing a black colored pigment is printed on the laminate using a gravure roll engraved with a stone grain R pattern, and pre-drying is performed using a cold air method to form a stone-grain printed pattern layer 6 on the laminate. The material shown in Fig. 1 was obtained by forming the material as shown in Fig. 1.

Next, when the item in the state shown in Figure -■ was passed under an electric tube heater set at 260℃ or less, as shown in Figure 2, there was a difference in uniformity between the printed part and the non-printed part. Distortion patterns 7 and 8 appeared. As can be seen from Figure 2, rough crack-like distortion patterns 7 are formed in the areas where the printing ink has been transferred, and the areas without printing are finer and more uniform distortion patterns. 8 was formed, and a wall covering material with a deep metallic luster was obtained.

[Brief explanation of drawings]

Figure 1 shows the state before direct heating with an electric tube heater, and Figure 2 shows the state after direct heating to 260°C or higher -F with an electric tube heater. As shown in Fig. 2, the feature of the present invention is that after direct heating, the surface of the fjI layer has large crack-like zigzag patterns 7 formed in the printed areas, and fine and uniform zigzag patterns 8 are formed in the non-printed areas. is formed. In addition, on the cross section of the aluminum evaporated layer, there are areas (■) where the printing layer is largely cracked and areas (■) where the areas without printing are finely cracked. 1. Thermoplastic synthetic resin film having heat shrinkability, 2
1 metal vaporized layer 53... 1 adhesive layer, 4- thermoplastic synthetic resin layer, 5- base material, 6- 1 printing ink layer, 7- large crack-like crack in printed area 8- 1 printed part Microscopic distortions in areas where there is no printing, ■1. Cracks in the vapor deposited layer on printed areas seen from a cross section, ■...Cracks in the vapor deposited layers on areas where there is no printing seen from a cross section. Patent applicant Akira Seki, Representative Director of Kanto Leather Co., Ltd.

Claims (1)

[Scope of Claims] 1. A heat-shrinkable thermoplastic synthetic resin film in which a thermoplastic synthetic resin layer is laminated over the entire surface of a base material such as paper, cloth, or nonwoven fabric, and metal powder is further vacuum-deposited on top of the thermoplastic synthetic resin layer. By stacking the layers with an adhesive interposed so that the vapor-deposited layer is on the bottom, and then heating them with a far-infrared heater or embossing them after heating, a uniform and fine crimp pattern is formed in the vacuum-deposited area. A decorative object with a metallic feel. 2 A vacuum vapor deposited part with a printed pattern is created by printing a pattern on the above laminate with a printing ink that can be bonded to a thermoplastic synthetic resin film, and then heating it with a far-infrared heater or embossing it after heating. A decorative object with a metallic feel in which different distortion patterns are uniformly formed between the vacuum-deposited part and the other vacuum-deposited parts.