JPS6032000A - Back pushing transfer material having metallic glossy pattern and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bank press transfer material having a metallic luster pattern and a method for manufacturing the same. To achieve this, the present invention relates to a transfer material for so-called "bank stamping" for transferring a desired pattern onto the back surface of a transparent molded product, and a method for manufacturing the same.

The purpose of the present invention is to create a multicolored metallic luster pattern in which the coloring pattern of any color and the metal vapor deposition layer are perfectly registered on the back side of a transparent molded product by transferring it after molding or at the same time as molding. An object of the present invention is to provide a transfer material for back pressing that can be applied by transfer application.

Conventionally, as a transfer material for back pressing having a metallic luster pattern, there is an invention filed by the present applicant (Patent No. 101).
(See No. 0841). The transfer material according to the present invention is provided by forming a pattern layer mainly composed of a water-soluble resin on a removable base sheet, forming a metal vapor deposition layer on top of the pattern layer, and further including a resin binder on top of the pattern layer. It is obtained by printing or applying a dye solution, removing unnecessary metal deposited layer and dye solution through a water washing process, and then forming an adhesive layer. This is a transfer material that can produce a metallic luster pattern in which the metal vapor deposited layer portion is perfectly registered.

However, in this transfer material, only dye molecules exist in a monomolecularly adsorbed state on the metal vapor deposited layer. Therefore, first of all, the dye that can be applied must have the property of being strongly adsorbed to the metal deposited layer so that it does not come off even during the water washing process or the peel test after transfer. However, dyes with the above-mentioned properties are extremely special, and pigments cannot be used because they do not have adsorption ability, so the range of selection as a coloring agent is extremely limited. It is something that you have. Second, since the dye molecules on the metal vapor deposited layer are adsorbed monomolecularly, only an extremely light color tone can be obtained.
It has been found that this method also has the disadvantage that a deep color cannot be obtained.

Therefore, in view of the various drawbacks mentioned above, the present inventor earnestly and
As a result of our research, we have completed a more advanced transfer material and its manufacturing method that eliminates the drawbacks of the prior art. That is, the first invention of the present application is such that a metal vapor deposited layer is partially provided on a base sheet having peelability, and a resin binder capable of preventing penetration of an acidic or alkaline solution is provided on the metal vapor deposited layer. This bank press transfer material has a metallic luster pattern, and is characterized by being provided with a resist layer as a main component, and further having an adhesive layer thereon as required. The second invention of the present application includes a first step of providing a metal vapor deposited layer over the entire surface on a base sheet having peelability, and a resin binder that can prevent penetration of an acidic or alkaline solution onto the metal vapor deposited layer. A second step in which a resist layer is partially formed using an ink containing as a main component, an appropriately selected solvent, a dispersant, a plasticizer, and, if necessary, an ink auxiliary agent such as a coloring agent. The third step is to melt and remove the metal vapor deposited layer other than the part where the resist layer is provided with an acidic or alkaline solution, and then dry it, and the fourth step is to form an adhesive layer on the resist layer as necessary. This is a method for producing a bank press transfer material having a characteristic colored metallic luster pattern.

Hereinafter, the present invention will be explained in more detail using the drawings.

The transfer material 1 according to the present invention includes a base sheet 2 having peelability.
The basic layer structure consists of a metal vapor deposition layer 3, a resist N4, and an adhesive layer 5 provided thereon (see FIG. 1).

The base sheet 2 having releasability is one in which a releasable layer N2b is provided on a base sheet 2a.

The base sheet 2a may be a polyester film, a nylon film, an acetate film, an acrylic resin film, a polystyrene film, a polypropylene film, or the above-mentioned film whose surface is coated with a curable resin such as melamine resin, Urya resin, epoxy resin, or urethane resin. There is a film thickness of 25 μm to 7
The thickness is preferably about 5 μm.

Peel 1 layer 2b is a layer that appears on the back surface of the molded product after transfer, and requires wear resistance, scratch resistance, etc. Materials that can be used include acrylic resin, vinyl chloride, etc. Vinyl acetate copolymer resins, cellulose resins, chlorinated rubber, chlorinated polyolefins, etc. may be used alone or in combination of two or more, and if necessary, a film strengthening agent such as polyethylene wax may be added.

The releasable base sheet 2 may be provided with a pattern layer 6 consisting of a pattern of arbitrary characters, symbols, etc. (see FIG. 2).

The ink used for the pattern layer 6 is colored using an ink binder that has adhesive properties to the material used for the release layer 2b and the material used for the anchor layer 7 before vapor deposition or the metal vapor deposition layer 3, which will be described later. The agent may be selected appropriately.

The metal vapor deposition layer 3 provided on the base sheet 2 having peelability is preferably formed of a metal such as aluminum by vacuum vapor deposition.

Note that it is a matter of course that an ion blating method, a sputtering method, etc. can be applied instead of the vacuum evaporation method.

In addition, in providing the metal vapor deposition N3, in order to improve suitability for metal vapor deposition, the base sheet 2 having peelability is
It is preferable to provide a pre-deposition anchor layer 7 on top or on the pattern layer 6 (see FIG. 3).

The anchor layer 7 before vapor deposition is a layer formed to prevent clouding of the vapor deposition that occurs during metal vapor deposition and vapor deposition fading that occurs during transfer, and to obtain a beautiful metallic luster.
Usually, considering the adhesion of the metal vapor deposited layer 3, urethane resin, nitrified cotton, vinyl chloride/vinyl acetate/maleic acid copolymer resin,
Acrylic resin etc. are used.

Note that the pre-vapor deposition anchor layer 7 is such that when the base sheet 2a is peeled off after transfer, the release layer 2b is
If the structure is such that it peels off at the same time, it becomes a layer that appears on the back surface of the molded product, so it is an essential layer.

The resist layer 4 provided on the metal vapor deposition N3 is provided corresponding to the portion where a metallic luster pattern is required.

The ink used for the resist layer 4 is mainly composed of a resin binder that can prevent the penetration of acidic or alkaline solutions, and is blended with appropriately selected ink auxiliaries such as solvents, dispersants, and plasticizers. A coloring agent may be added as necessary.

Examples of the resin binder include thermoplastic resins such as acrylic resin, vinyl chloride/vinyl acetate/maleic acid copolymer resin, chlorinated rubber, vinyl butyral resin, chlorinated polyolefin, melamine resin, urea resin, epoxy resin,
There are thermosetting resins such as urethane resins, thermosetting acrylic resins, polyester resins, and alkyd resins, and two-part curable resins.

The coloring agents include inorganic pigments such as titanium oxide, carbon black, and Bengara, as well as phthalocyanine, azo, and
There are organic pigments such as anthraquinone-based and triphenylmethane-based dyes and pigments, and quinacridone-based and dioxazine-based pigments.

Therefore, when selecting a colorant, if dyes and pigments are not mixed, the luster of the metal vapor deposited layer 3 will appear as is, and if highly transparent dyes and pigments are used, the luster of the metal vapor deposited layer 3 will be revealed. In addition, when a pigment with slightly lower transparency is used, the luster of the metal vapor deposited layer 3 is slightly suppressed, and when an ink containing a pigment with excellent hiding properties is used, it is possible to obtain a metallic luster pattern. Even when printed on the vapor-deposited layer 3, it is possible to obtain coloring with completely suppressed metallic luster, and by selecting and combining the dyes and pigments used, extremely diverse colored patterns with metallic luster can be formed. It is something that can be done.

Next, the acidic or alkaline solution used in the step of dissolving and removing the surface-exposed metal vapor deposited layer 3 is as follows:
There are acidic aqueous solutions such as hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, and hydrofluoric acid, and alkaline aqueous solutions of hydroxide, potassium hydroxide, and lithium hydroxide.

Actually, after dissolving and removing the metal vapor deposited layer 3, the process of washing with water and drying is performed.

After drying, an adhesive layer 5 is provided on the resist layer 4.

The design of the material used for the adhesive layer 5 needs to be changed as appropriate depending on the type of molded product. , polycarbonate, etc., binders such as acrylic resin, styrene resin, polyamide, etc. may be used, and when the molded product is polyethylene, polypropylene, etc., chlorinated polyolefin, chlorinated ethylene vinyl acetate copolymer resin, cyclized Binders such as rubber and coumaron indene resin can be used, and if the molded product is made of vinyl chloride resin, vinyl chloride/vinyl acetate copolymer resin, and saturated polyester resin, which corresponds to various other resins for molded products, can be used. Nitrified cotton and the like can also be used. However, in any case the adhesive layer 5 must not be opaque.

Note that if an ink that is adhesive to the object to be transferred is used as the ink used for the resist N4, the adhesive layer 5 can be omitted (see FIG. 3).
.

When actually using the transfer material obtained in this way, roll transfer printing is performed on the back side of a pre-formed transparent molded product.
Methods of disbursing funds by means such as up-down transfer printing,
It can be applied to any method, such as molding simultaneous transfer transfer, in which the transfer material is introduced into the mold, the molding resin is injected, and the transfer is applied at the same time as the molded product is being molded. In terms of physical properties, for example, ultraviolet rays act on the design through the transparent molded product, which is extremely advantageous against discoloration and fading even when dyes with weak light resistance are used.

Therefore, with the transfer material of the present invention, it is possible to impart a variety of metallic luster patterns with excellent physical properties, which could not be obtained conventionally, to molded products by a simple means, and the material has extremely high utility value in industry. be.

Examples will be shown and explained below.

<Example 1> A release layer was formed on a 25 μm thick polyester film using an ink having the following composition.

Acrylic resin 20 parts Methyl ethyl ketone 40 parts Toluene 40 parts A pattern 2 (design layer) of desired characters, symbols, etc. was formed thereon using a sumi ink containing an acrylic resin as a binder.

A pre-vapor deposition anchor layer was formed thereon using urethane resin, and then a 600-layer vacuum-deposited layer was formed using aluminum.

Further, each resist layer was formed thereon using four color inks having the following compositions.

Vinyl chloride/vinyl acetate/maleic acid copolymer resin 15
Part toluene 35 parts Methyl ethyl ketone 40 parts Pigment 10 parts Rho 2G (manufactured by Sumitomo Chemical Co., Ltd.) Next, the exposed part of the metal vapor deposited layer was dissolved and removed in a 0.5% sodium hydroxide solution at 60°C, and then washed with water. , then dried.

A transparent adhesive layer was formed thereon using an ink having the following composition to obtain a transfer material.

Styrene/acrylic copolymer resin 20 parts Toluene 40
Part Methyl Ethyl Ketone 40 Parts Next, a 3 m thick flat plate-shaped transparent resin molded product made of acrylonitrile styrene copolymer resin was transferred with a transfer pattern using the transfer material by a roll transfer method. The transfer conditions at that time are that the surface temperature of the silicone rubber roll is 220℃.
℃, the total pressure was 100 kg, and the transfer speed was 10 cm/sec.

The patterned transparent resin molded product thus obtained can be seen through the transparent molded resin with a thickness of 31 m.
The design was extremely interesting, combining patterns in a variety of tones of deep metallic blue, green, red, and gold.

<Example 2> After forming a release layer similar to Example 1, a pattern layer, an anchor layer before vapor deposition, a metal vapor deposition layer, and a resist layer on a polyester film coated with a melamine resin and having a thickness of 50 μm, 6
The unnecessary metal vapor deposited layer was dissolved and removed in a 0.5% potassium hydroxide solution at 0°C, then washed with water, and then dried.

A transparent adhesive layer was formed thereon using ink containing acrylic resin as a main component to obtain a transfer material.

The thus obtained transfer material was introduced into an injection mold with the adhesive layer side facing the gate, and the molding acrylic resin melted at 250°C was poured into the clamped mold. At the same time as injection and molding, a pattern was transferred and painted, and after opening the mold, the polyester film was peeled off to obtain a three-dimensional resin molded product with a transfer layer on the back side.

Similar to the resin molded product obtained in Example 1, this resin molded product was extremely interesting in terms of its design, combining patterns in various tones of deep metallic blue, green, red, and gold. .

<Example 3> 5 After forming a release layer similar to that in Example 1 on a polyester film with a thickness of 38 μm, a single layer of an anchor before vapor deposition consisting of a vinyl chloride/vinyl acetate copolymer resin and a acrylic resin at a composition of 2:1 was formed. Then, a metal vapor deposition layer was formed using aluminum.

On top of that, a resin mixture consisting of vinyl chloride/vinyl acetate/maleic acid copolymer resin Niacrylic resin - 1:1 is used as a resin binder, and this is coated with white, titanium oxide, carbon black, purple, dioxazine violet, red, oleosole, fast red, BL, and oleosol. A resist layer was formed using a six-color adhesive ink containing appropriate amounts of dyes and pigments selected from First Yellow 2G Blue and Varifast Blue 2605 (Orient Kagaku M) and a dispersant.

Next, the exposed metal vapor deposited layer was dissolved and removed with a 3% hydrofluoric acid aqueous solution, washed with water, and then dried to obtain a transfer material.

The thus obtained transfer material was used to transfer and decorate a pattern onto a transparent polystyrene resin molded product using the simultaneous molding transfer method in the same manner as in Example 2.

As a result, a three-dimensional resin molded article with a transfer layer on the back surface was obtained.

Similar to the resin molded product obtained in Example 2, this resin molded product was extremely interesting in terms of its design, which was a combination of deep metallic and variegated color patterns.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a transfer material according to the present invention, and FIGS. 2 and 3 are sectional views of other embodiments. In the figure, 1 --- Transfer material, 2 --- Base sheet having peelability, 2a --
- One base sheet, 2b - One release layer, 3 - One metal vapor deposited layer, 4 - Resist layer, 4a - Resist layer having adhesive properties, 5 - Adhesive layer , 6 ----One pattern layer, 7 - One layer of anchor before vapor deposition, Patent applicant Nissha Printing Co., Ltd. 9 Figure 1

Claims (8)

[Claims] (1) A metal vapor deposited layer is partially provided on a base sheet having peelability, and a resist layer containing a resin binder as a main component that can prevent penetration of acidic or alkaline solutions is provided on the metal vapor deposited layer. 1. A back-pressing transfer material having a metallic luster pattern, which is further provided with an adhesive layer thereon as required. (2) The bank press transfer material having a metallic luster pattern according to claim 1, wherein the base sheet having peelability has an arbitrary pattern layer. (3) Claim 1, characterized in that the metal vapor deposition layer is provided on a single layer of anchors before vapor deposition.
A bank press transfer material having a metallic luster pattern as described in 2. (4) The bank press transfer material having a metallic luster pattern as set forth in claim 1, wherein the resist layer has adhesive properties to the object to be transferred. (5) The first step is to provide a metal vapor deposited layer over the entire surface of the base sheet with peelability, and the metal vapor deposited layer is mainly composed of a resin binder that can prevent penetration of acidic or alkaline solutions. Appropriately selected solvents, dispersants,
A second method in which a resist layer is partially formed using an ink containing an ink auxiliary agent such as a plasticizer and a coloring agent if necessary.
3rd step of dissolving and removing the metal vapor deposited layer other than the part where the resist layer is provided with an acidic or alkaline solution and then drying it, and a 4th step of providing an adhesive layer on the resist layer as necessary. A method for producing a back-pressing transfer material having a metallic luster pattern, characterized by comprising: (6) Manufacture of a bank press transfer material having a metallic luster pattern as set forth in claim 5, characterized in that an arbitrary pattern layer is provided on the base sheet having peelability prior to providing the metal vapor deposited layer. Law. (7) Production of a back-pressing transfer material having a metallic luster pattern as set forth in claim 5, characterized in that, prior to providing a metal vapor deposition layer on a removable base sheet, a pre-vapor deposition anchor layer is provided. Law. (8) Claim 5, characterized in that the ink whose main component is a resin binder that can prevent penetration of acidic or alkaline solutions is an ink that has adhesive properties to the transferred object. A method for producing a back-pressing transfer material having the metallic luster pattern described above.