JPH0890999A - Locally deposited transfer foil - Google Patents

Abstract

PURPOSE: To obtain locally deposited transfer foil, which has small electrifying properties of a film and neither electric shock and adhesion of foreign matter nor spark at working after the deposition of aluminum develops. CONSTITUTION: A transferring layer P provided on one side of a base material film 1 is formed by laminating a peel ply 2, a pattern layer 3, a self-crossinkable antistatic layer 4, a locally deposited layer 5, a primer layer 6 and an adhesive layer 7 on one another in the order named.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a plastic molded article,
More particularly, it relates to a transfer foil used for surface decoration having a partial metallic feeling on various containers such as home electric appliances, office machines, cosmetics containers, etc. and display boards.

[0002]

2. Description of the Related Art Conventionally, partial vapor deposition transfer foils are provided with a release layer on one surface of a base film to improve the releasability of a transfer layer including a pattern if necessary, and further protected after transfer. A release layer to be a layer, a water-insoluble pattern layer, and a water-soluble water-washable primer layer corresponding to a portion that does not require metallic luster,
Then, the entire surface of the wound aluminum vapor-deposited surface is washed with water to remove the vapor-deposited layer on the water-washing primer layer and dried to form a partial vapor-deposited layer. A primer layer that prevents deformation of the vapor deposition layer,
And a heat-sensitive adhesive was provided.

The transfer foil in the above method is a step of applying a primer layer and an adhesive layer after vapor deposition of aluminum, and the partial vapor deposition layer is charged with static electricity, and when the air is dry, foreign matters such as electric shock and dust. There has been a problem that the processing material containing an organic solvent is ignited by causing adhesion, sparking in some cases, and causing a fire or an explosion. In order to prevent problems caused by static electricity, a release layer containing a surfactant is formed, a static eliminator is installed in the processing machine, and non-conductive materials such as rubber of the impression cylinder are made conductive by adding carbon etc. Attempts have been made to improve the property, to provide a ground on each part of the processing machine, to apply a primer layer in a subsequent step with an aqueous material, and the like.

[0004]

However, in order to solve the above-mentioned problems caused by static electricity, the one in which a surfactant is added to the release layer is used in the washing step when forming the partial vapor deposition of winding. If the surfactant flows out and it takes time for the residue remaining in the release layer to seep out to the surface again, the effect is not sufficient due to the insufficient amount of addition, or if there is a partially precipitated surfactant. However, there is a problem that aluminum deposition with a metallic feeling cannot be uniformly performed. Also, if a static eliminator or grounding is provided on the processing machine, static electricity can be removed at the removed part, but if there is a friction part during the running of the film, it will be recharged and hinder the workability of the installation part. There was a problem to do. Making the primer layer in the subsequent step water-soluble is effective in preventing fire due to sparks, but there are restrictions on the materials that can be used, and the quality of the partial vapor deposition transfer foil cannot always be satisfied, and There is a problem that the equipment required for drying becomes large.

The present invention has been made in order to solve the above problems, and is capable of forming a vapor-deposited aluminum vapor-deposited aluminum, and is a primer layer for washing corresponding to a portion which does not require metallic luster. It is an object of the present invention to provide a partial vapor deposition transfer foil which has a small electrification property on the film after washing, and is free from the influence of static electricity as described above in the processing after forming the partial vapor deposition layer.

[0006]

In order to achieve the above object, in the partial vapor deposition transfer foil of the present invention, a release layer, a pattern layer, a self-crosslinking type antistatic layer as a transfer layer on one surface of a substrate film. A layer, a partial vapor deposition layer, a primer layer and an adhesive layer are laminated in this order.

As shown in FIG. 2, the partial vapor deposition transfer foil A of the present invention has a release layer 2, a pattern layer 3, a self-crosslinking type antistatic layer 4 as a transfer layer P on one surface of a base film 1. The partial vapor deposition layer 5, the primer layer 6 and the adhesive layer 7 are laminated in this order.

As the substrate film for forming the partial vapor deposition transfer foil of the present invention, a film made of a usual thermoplastic resin is used as a single layer or a laminate. The film can be peeled off between the peeling layer and the pattern layer at the time of transfer. Further, the substrate film is a layer having a function of releasability or releasability, such as acrylamine, aminoalkyd,
If a resin layer having a releasability such as silicone or wax is provided, almost any film can be used. For example, polyamide such as 6 nylon and 66 nylon, polyolefin such as polyethylene and polypropylene, vinyl resin such as polyvinyl chloride and polyvinyl alcohol, ethylene / vinyl acetate copolymer, ethylene / vinyl alcohol copolymer,
Polyethylene copolymers such as ethylene / acrylic acid copolymers and ethylene / acrylic ester copolymers, polyesters such as polyethylene terephthalate and polybutylene terephthalate, methyl polymethacrylate, methyl polyacrylate, ethyl polymethacrylate In addition to acrylic resin such as polystyrene, single layer or laminated film of polystyrene, acrylonitrile / butadiene / styrene copolymer (ABS), polycarbonate, cellulose triacetate, cellophane, or coated paper such as aminoalkyd can be used. .

The peeling layer formed on the partial vapor deposition transfer foil of the present invention contains a solvent-soluble resin such as a thermoplastic resin or a fibrin derivative as a main component, a thermosetting type, a two-component curing reaction type, and an ionizing property. There is a reaction curable resin such as a radiation curable resin.

The release layer whose main component is a solvent-soluble resin is
Some include vinyl chloride / vinyl acetate copolymer, polyvinyl butyral, acrylic resin, urethane resin, ethyl cellulose, cellulose acetate butyrate, and nitrocellulose as main components.

The release layer made of the reaction-curable resin is a two-component reactive resin such as polyester isocyanate, polyether isocyanate, acrylic amino resin,
Some are formed from a resin varnish made of aminoalkyd, silicon resin, and the like, and some are made from an ionizing radiation-curable resin made of a 100% resin composition. The release layer of the reaction-curable resin does not deform due to the heat during vapor deposition during the aluminum vapor deposition process, so that a uniform metallic luster can be formed. Also, thermal transfer from the partial vapor transfer foil to the non-transfer substrate is possible. It is a suitable one that does not deform the aluminum vapor deposition layer or change the luster due to melting and flowing at the time. Since the varnish used for the peeling layer serves as a protective layer for the pattern layer after transfer, it is possible to add wax, fatty acid amide and the like, which are normal lubricants, in order to impart abrasion resistance.

The peeling layer can be formed in the same step when the pattern layer is printed, but when a reaction-curing type is used, it is preferable to use a dedicated coater having a hardening portion according to the material. . Further, when a large coating amount is particularly required, it may be provided by a method such as reverse coating.

Printing of the partial vapor deposition transfer foil of the present invention is a non-absorptive film by lacquer type solvent evaporation drying type printing ink, known gravure printing which can use two-component reaction type ink, silk screen printing and the like. This is an advantageous method for printing on the present invention. In order to form a metallic tone on the pattern layer, an ink using a transparent colorant and essentially the same color as the pattern layer can be used.

In the partial vapor deposition transfer foil of the present invention, a varnish made of a self-crosslinking polymer having antistatic property or a two-component curing type resin is used on the pattern layer. For example, there is a mixture of an isocyanate compound and a surfactant having an antistatic property and having a functional group which reacts with an isocyanate compound having two or more functional groups. In addition to the above, a surfactant having a functional group that undergoes a curing reaction with a silane coupling agent, or an ionizing radiation-curable resin mainly composed of a resin having an antistatic property may be used. The surfactant can be used alone or in combination from anionic, cationic and nonionic surfactants. The self-crosslinking type antistatic layer is provided in a coating amount of 1 to ² g / m ² (solid content conversion) in the same step when printing the pattern layer. The drying condition is 80 ° C for 10 seconds or more, forming a tack-free film,
Curing can be completed completely at 150 ° C. for 60 seconds or at 25 ° C. or higher for 72 hours or longer. In addition, the resin is cured under reaction conditions suitable for each resin.

Further, a water-soluble water-washable primer layer is formed on the portion of the self-crosslinking type antistatic layer which does not require metallic luster by printing in the same step as the above-mentioned pattern layer and the self-crosslinking type antistatic layer. To do. In this way, the release layer, the pattern layer, the self-crosslinking type antistatic layer, and the water-washing primer layer provided on the base film are, if necessary, 100 to 16
A curing process is performed at 0 ° C. for 20 to 60 seconds. The water-washing primer layer is formed by vapor-depositing aluminum and then removing it together with the aluminum vapor-deposited layer to form partial vapor deposition. Then, the material is appropriately selected from water-soluble materials such as polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl ether, sodium polyacrylate, methyl cellulose, and starch, and further added with inorganic fine particles such as microsilica and precipitated barium sulfate. Configure.

By a vacuum vapor deposition method capable of processing the film after the above curing step by ordinary winding, aluminum vapor deposition is applied to a thickness of 50 to 500Å on the self-crosslinking type antistatic layer containing the above-mentioned patterned primer layer for washing with water. Now, set it on the entire surface.

Further, the film provided with the aluminum vapor-deposited layer is immersed in water or hot water or subjected to shower washing to dissolve the above-mentioned primer layer for washing with water, and at the same time, the aluminum vapor-deposited layer formed on the primer layer is also dissolved. Remove by peeling. As a result, it is possible to form a pattern layer having a metallic tone partial vapor deposition layer in which a portion where the aluminum vapor deposition layer is not removed is colored with an arbitrary color and the pattern layer.

Next, a primer layer for stabilizing the adhesion between the adhesive layer, the partial vapor deposition layer, and the self-crosslinking type antistatic layer is provided. The primer layer also has a function of preventing the partial aluminum vapor deposition layer from being deformed or impairing the gloss due to the deformation of the heat-sensitive adhesive layer for thermally transferring the partial vapor deposition transfer to the substrate to be transferred. The primer layer is
A reaction type varnish consisting of polyether polyol or polyester polyol and polyisocyanate which is a cross-linking agent thereof, urethane, amino alkyd, acid, polyisocyanate or amine-cured epoxy resin is appropriately selected and used.

The adhesive layer used in the transfer sheet of the present invention is
It is provided to heat-bond a pattern to a transfer-receiving member such as a molded product. The material is determined by the relationship with the material of the transferred material, and can be formed of the same material as that used conventionally for the thermal transfer sheet. For example, there are resin varnishes containing acrylic resin, polyethylene / vinyl acetate copolymer, urethane resin, polyvinyl butyral, natural rubber, and synthetic rubber as main components. Then, the application can be carried out in the same step as the application of the primer layer by using a normal gravure rotary printing machine or coater. Further, when a large coating amount is particularly required, it may be provided by a method such as reverse coating.

[0020]

Since the partial vapor deposition transfer foil of the present invention having the above-mentioned structure is formed by laminating the self-crosslinking type antistatic layer with the aluminum vapor deposition layer, it occurs when processing the winding after the partial vapor deposition. Since it works so as not to be charged with static electricity and does not generate sparks during the processing, not only the primer layer and adhesive layer suitable for the application are water-based,
A varnish dissolved in an organic solvent can be freely selected and used. Further, it is not necessary to add a ground or antistatic equipment to the processing machine. The self-crosslinking type antistatic layer acts as a primer for the vapor deposition layer, has an effect of stabilizing the adhesion and gloss of the vapor deposition layer, and can prevent clouding that occurs when the partial vapor deposition transfer foil is transferred. Also,
In the polymerized self-crosslinking type antistatic layer, the antistatic action of the transfer layer provided on the transfer-receiving substrate is durable without the antistatic agent being deposited and consumed.

[0021]

EXAMPLES Examples will be described with reference to the drawings.

Example 1 A polyester film 25 μm (Lumirror T-60 manufactured by Toray Industries, Inc.) which is the base film 1 of FIG. 1 is provided with a release layer 2 of 1 g / m 2 made of the following materials.
² (solid content, the description about the coating amount in this specification is hereinafter referred to as solid content), the pattern layer 3 and the self-crosslinking type antistatic layer 4
g / m ² and a patterned washing primer layer W of 2 μ
It was provided in one step with a m gravure rotary printing machine and was aged for 72 hours or more at room temperature of 15 to 30 ° C. to complete the curing of the self-crosslinking type antistatic layer 4. Further, by a vacuum vapor deposition method capable of processing the film that has undergone the above curing step by ordinary winding, 50 to 5 aluminum vapor deposition 5M is formed on the self-antistatic layer 4 including the above-described patterned water washing primer layer W.
It was provided on the entire surface with a thickness of 00Å to form the entire surface vapor-deposited film M shown in FIG. -Peeling layer Acrylic 46-7 manufactured by Showa Ink Mfg. Co., Ltd.-Picture layer Acrylic GG manufactured by Showa Ink Mfg. Co., Ltd.-Self-crosslinking type antistatic layer Jurimer SP manufactured by Nihon Pure Chemical Co., Ltd. Primer W

Further, the overall vapor-deposited film M provided with the aluminum vapor-deposited layer is immersed in warm water at 30 ° C. for 20 seconds and then shower washed to dissolve the water-soluble primer layer W to form the primer layer. At the same time, the aluminum vapor deposition layer is peeled and removed. As a result, a metallic vapor-deposited partial vapor deposition layer 5 shown in FIG. 2 was formed in which a portion where the aluminum vapor deposition layer was not removed was colored with an arbitrary color and a pattern layer.
Then, the primer layer 6 and the adhesive layer 7 are provided by the following materials in the same process by a gravure rotary printing machine, and the transfer layer P of the present invention is obtained.
The partial vapor deposition transfer foil A shown in FIG.・ Primer layer Showa Ink Mfg. Co., Ltd. epoxy urethane 47-8 ・ Adhesive layer Showa Ink Mfg. Acrylic AD-7

Comparative Example 1 From Example 1, a partial vapor deposition transfer foil An shown in FIG. 3 having a transfer layer Pn excluding the self-crosslinking type antistatic layer 4 shown in FIGS. 1 and 2 was constructed.

[Comparative Example 2] An interface as an antistatic agent is applied to the surface of the partially vapor-deposited transfer foil An of Comparative Example 1 having the transfer layer Pn excluding the self-crosslinking type antistatic layer 4 from Example 1 as an antistatic agent. An activator (manufactured by Kao Corporation: Rheodol SP) was added to the amount of 0.
Partial deposition transfer foil A (not shown) coated with 1 g / m ²
configured n.

An acrylic / styrene plate (manufactured by Asahi Kasei Kogyo Co., Ltd. 76) shown in FIG. 4 was used as the transferred substrate 10 by using the partial vapor-deposited transfer foils A and An of the above Examples and Comparative Examples.
7), roll transfer machine at 200 ℃, 10K / cm, 2m
/ Min. Table 1 shows the results of measuring the physical properties of the transfer layers P and Pn transferred under the conditions of.

[0027]

[Table 1] Physical properties of the transfer layer transferred from the partial vapor transfer foil However, surface resistance value: Surface resistance meter HIRESTA IP M
It measured at 500W with CP-HT250 (made by Mitsubishi Petrochemical Co., Ltd.). Adhesion of ash: 1 material on cotton cloth with a load of 500 g / m ²
Immediately after rubbing for 0 times (10 cm / s) 5 on cigarette ashtray
The state of adhesion of ash was evaluated by holding it over cm. Judgment Criteria O: Ash remains in an area of 1/5 or less. Δ: Ash remains in the area of 1/5 to 1/3. X: Ash remains in an area of 1/3 or more.

[0028]

Since the partial vapor deposition transfer foil of the present invention having the above-mentioned structure is constituted by laminating the self-crosslinking type antistatic layer with the aluminum vapor deposition layer, it is possible to process the winding after the partial vapor deposition. The amount of static electricity generated is small, and since sparks do not occur even during post-processing, not only water-based primer layers and adhesive layers, but also varnish dissolved in an organic solvent can be freely selected. High quality can be constructed. Further, it is not necessary to add a ground or an antistatic equipment to the processing machine, which has an effect of gradually reducing the equipment cost. The self-crosslinking type antistatic layer acts as a primer for the vapor deposition layer, has an effect of stabilizing the adhesion and gloss of the vapor deposition layer, and prevents clouding that occurs when the partial vapor deposition transfer foil is transferred. In addition, the polymerized self-crosslinking type antistatic layer does not cause the antistatic agent to be deposited and consumed, and the antistatic effect of the transfer layer provided on the transferred substrate after the water resistance and weather resistance tests is not It is sustainable.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of an intermediate processed product at the time of manufacturing a partial vapor deposition transfer foil provided with overall vapor deposition.

FIG. 2 is a schematic sectional view of a partial vapor deposition transfer foil having a transfer layer formed thereon.

FIG. 3 is a schematic cross-sectional view of a partial vapor deposition transfer foil of a comparative example excluding a self-crosslinking type antistatic layer.

FIG. 4 is a schematic cross-sectional view showing a state in which a transfer layer is provided on a transfer base material.

[Explanation of symbols]

 1 Base Film 2 Release Layer 3 Pattern Layer 4 Self-Crosslinking Antistatic Layer 5 Partial Deposition Layer 5M Aluminum Deposition Layer 6 Primer Layer 7 Adhesive Layer 10 Transferred Substrate A Partial Deposition Transfer Foil An Self-Crosslinking Antistatic Layer Partial vapor deposition transfer foil not included M Fully vapor deposited film P Transfer layer Pn Transfer layer not including self-crosslinking type antistatic layer W Washing primer layer

Claims (1)

[Claims] 1. A part characterized in that a release layer, a pattern layer, a self-crosslinking type antistatic layer, a partial vapor deposition layer, a primer layer and an adhesive layer are sequentially laminated as a transfer layer on one surface of a substrate film. Vapor deposition transfer foil.