JPS6033031Y2 - Heat-resistant vapor deposition transfer material - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vapor-deposited transfer material with excellent heat resistance.

Conventionally, commercially available vapor-deposited transfer materials (metallic transfer foils) used for all-silver painting on paper, leather products, plastic moldings, wood, fabrics, etc., generally do not require heat to be applied to the vapor-deposited anchors or protective layer. Plastic resin is used.

Therefore, in this case, if the heating and pressurizing conditions are harsh during the transfer process due to poor heat resistance, the vapor-deposited anchor layer and the protective layer will cause thermal shrinkage and distortion, and the metal vapor-deposited film layer that is bonded to the layer will cause heat shrinkage and distortion. However, due to physical and mechanical deformation, the surface gloss of the deposited film layer becomes cloudy, or whitening or discoloration occurs.

It has also been considered to use a general thermosetting resin instead of the above-mentioned thermoplastic resin, but in this case, there are restrictions in that the drying temperature and drying time are required to be higher than those required for forming the coating layer. For example, there are drawbacks such as inability to perform high-speed continuous printing using a multicolor rotogravure printing machine, or discoloration during vapor deposition due to poor drying.

For this reason, conventional vapor-deposited transfer materials are not suitable for transfer painting onto heat-resistant materials such as metal, glass, and ceramic products, which have strict transfer conditions, and their application to these materials has not yet been put into practical use. The situation is that it is not.

In view of the current situation, the applicant has made various efforts to improve the drawbacks of the above-mentioned conventional metallic transfer foil, and as a result, the metal vapor deposited film layer of the transfer material is coated from the upper and lower surfaces with a thermosetting resin that has extremely excellent drying properties. We learned that by forming a layer-shaped transfer layer with a metal vapor-deposited film layer embedded in a thermosetting resin, a metallic transfer foil with extremely excellent heat resistance can be obtained industrially and economically. Based on this knowledge, the present invention aims to develop and provide a metallic transfer foil that can be applied to various heat-resistant materials.

That is, the present invention includes, on one side of a film base material 1, a transparent release layer 2 that is easier to peel than the film base material 1, an ink layer 3 with an arbitrary design, at least one type of curable resin having an OH group, and an isocyanate-based hardening resin. A heat-resistant vapor deposition anchor layer 4 made of a composition whose main components are a chemical agent and a cellulose resin, a metal vapor deposition film layer 5, a heat-resistant protective layer 6 made of the same composition as the above-mentioned heat-resistant vapor deposition anchor layer, and a thermosetting resin. This is a heat-resistant vapor deposition transfer material characterized by having a structure in which heat-sensitive adhesive layers 7 and the like are sequentially laminated.

The present invention will be explained in detail below based on the drawings.

As the film base material 1, a transparent film made of polyester film, nylon film, polypropylene film, cellophane, etc. alone or a composite film of these films is used, and among them, a polyester film having excellent water resistance and heat resistance is particularly preferred.

Furthermore, aluminum foil or the like may also be used if exceptional heat resistance is required.

The transparent release layer 2 provided on one side of the film base material 1 has relatively high releasability with respect to the film base material 1 and has an ink layer 3.
It is desirable to use synthetic resin compositions that have compatibility with printing inks, pigment paints, etc., and have relatively excellent water and heat resistance. It is applied over the entire surface of the film base 1 using a color rotogravure printing machine or the like.

Next, the ink layer 3 provided on the surface of the transparent release layer 2 is made of an ink that has a high affinity with the transparent release layer 2 and the heat-resistant vapor deposition anchor layer 4 and has excellent water and heat resistance, such as gravure ink, colorless transparent ink, and colored transparent ink. It is formed by printing an arbitrary pattern using colored opaque ink or other coloring agent.

Further, this ink layer 3 may also contain a sublimable colorant.

In that case, the coloring agent is mainly
A disperse dye that is easily sublimed by C is used, but various other heat-transferable dyes can also be used.

However, when such a sublimation colorant is used, it is necessary to form a synthetic resin surface in each layer above and below the ink layer 3 that has excellent diffusion, permeation, and coloring properties for these colorants, so materials suitable for this purpose are used. For example, acrylic resin or the like may be used.

Next, the heat-resistant vapor deposition anchor layer 4 provided on the surface of the ink layer 3 is an important layer in the structure of the present invention, and in particular, it is necessary to obtain a layer with excellent heat resistance and high-speed printing suitability, so a curable layer with OH groups is used. An isocyanate-based curing agent such as TDI-based incyanate, HMDI-based incyanate, etc. is added to a resin such as a polyester polyol resin, an acrylic polyol resin, a polyether polyol resin, etc. alone or a mixture thereof, and then nitrocellulose or cellulose is added to the resin. Cellulose resin such as acetate butyrate and some N
- One layer 4 of heat-resistant vapor deposition anchors is provided by printing using a solution composition prepared by dissolving in an organic solvent a catalyst made of a tin compound such as butyltin dilaurate or trimertin tin hydroxide.

This heat-resistant vapor deposition anchor layer 4 is mainly printed at high speed in succession with the various types of printing described above using a multicolor rotogravure printing machine, so if necessary, the amounts of the curing agent and catalyst added may be adjusted according to the printing drying speed. good.

Next, a metal vapor-deposited film layer 5 made of aluminum, silver, chromium, copper, other metals, etc. alone or in combination is provided on all four sides of this heat-resistant vapor-deposited anchor by vacuum vapor deposition.

In addition, when the metal vapor deposited film layer 5 is provided not on the entire surface but partially, a water-soluble coating is applied in advance on the four surfaces of the heat-resistant vapor deposition anchor layer on the parts where the metal vapor deposited film layer is not required. If a coating agent layer is provided by printing or the like, a metal vapor deposited film layer made of the metal is provided on the entire surface by a vacuum vapor deposition method, and then the water-soluble coating layer is dissolved and removed by ice washing or the like. Since the metal vapor deposited film layer above it is also removed at the same time, a partial metal vapor deposited film layer 5 as shown in FIG.
is obtained.

Next, a heat-resistant protective layer 6 is provided on the metal vapor deposition film layer 5 provided as described above using the same thermosetting resin composition as the heat-resistant vapor deposition anchor layer.

This heat-resistant protective layer 6 may be exactly the same as the heat-resistant vapor deposition anchor layer 4, or, for example, the heat-resistant vapor deposition anchor layer 4
For the heat-resistant protective layer 6, for example, acrylic polyol resin, HMD, etc. are used.
The same materials as those used in the heat-resistant vapor deposition anchor layer 4, such as I-based isocyanate (curing agent) and cellulose acetate butyrate, may be used.

After that, the thermosetting resin used for printing or coating the entire surface of the thermosetting adhesive layer 7 made of thermosetting resin is as follows:
For example, a thermosetting acrylic resin mixed with melamine resin or guanamine resin is suitable.

When using the transfer material of the present invention having the above configuration, first, the transfer material is superimposed on the surface of the object to be transferred and thermally transferred, and then the film base material 1 is peeled off from the transfer surface, and then heated in a heating oven. Baking is performed in a heated oven at 130°C to 180°C for about 5 minutes to 3 minutes.

By this heating and baking, the heat-resistant vapor deposition anchor layer 4, heat-resistant protective layer 6, heat-sensitive adhesive layer 7, etc. on the surface of the transferred object are completely cured, resulting in a film that is extremely stable in terms of physical properties unique to thermosetting resins, and at the same time, the transferred object is completely cured. It also provides strong adhesion to body surfaces.

In addition, when a sublimable coloring agent is used in the ink layer 3, the coloring agent is colored at the same time as heating baking, or after heating baking only, heating is performed again for coloring, e.g.
It is preferable to perform heat treatment at 0°C to 220°C for about 2 seconds to 1 minute.

As mentioned above, the present invention covers the metal vapor deposited film layer from above and below with a thermosetting resin suitable for the vapor deposition anchor layer, which was not used in conventional metallic transfer foils, and immerses the metal vapor deposited film layer in the thermosetting resin. Due to its tight layer structure, it is a heating transfer material with a metal vapor deposited film layer that has extremely high heat resistance that is incomparable to conventional metallic transfer foils, so it can withstand harsh transfer conditions during transfer.
Clouding, whitening, discoloration, etc. can be completely prevented.

In addition, since the drying speed of one layer of the heat-resistant vapor-deposited anchor is fast, each layer can be printed continuously using a multicolor rotogravure printing machine, etc., so it is a transfer material that can be mass-produced economically and at the same time as stabilizing the quality. Because the transfer layer is heated and baked after transfer, the transfer layer transferred to the surface of the transfer target has extremely excellent physical properties, so it is highly useful as a transfer material suitable for transfer to various heat-resistant materials. It is something.

[Brief explanation of the drawing]

FIG. 1 is an enlarged cross-sectional explanatory view of the present invention. FIG. 2 shows a case where the metal vapor deposited film layer 5 of FIG. 1 is partially formed. In the figure, 1...Film base material, 2...Transparent release layer, 3...Ink layer, 4...One layer of heat-resistant vapor deposition anchor, 5... ...Metal deposited film layer 6.
...Heat-resistant protective layer, 7... Heat-sensitive adhesive layer.

Claims (3)

[Scope of utility model registration request] (1) On one side of the film base material 1, a transparent peeling layer 2 that is easier to peel off than the film base material 1, an ink layer 3 with an arbitrary design, and an O
A heat-resistant vapor deposition anchor layer 4 consisting of a composition whose main components are at least one curable resin having an H group, an isocyanate curing agent, and a cellulose resin, a metal vapor deposition film layer 5, and the heat-resistant vapor deposition anchor layer 5. A heat-resistant vapor deposition transfer material characterized by having a layer structure in which a heat-resistant protective layer 6 made of a similar composition, a heat-sensitive adhesive layer 7 made of a thermosetting resin, etc. are laminated in sequence. (2) The heat-resistant vapor-deposited transfer material according to claim 1, wherein the metal vapor-deposited film layer 5 is partial. (3) The heat-resistant vapor deposition transfer material according to claim 1 or 2, wherein the ink layer 3 is a layer containing a sublimable dye.