JPS5926287A - Three-dimensional transfer foil - Google Patents

Abstract

PURPOSE:To obtain a beautiful looking three-dimensional foamed film simultaneously with stamping, by a method wherein a releasable layer is provided on one side of a base sheet, a pattern layer of a foamable resin is provided thereon either directly or through a protective layer, and a contact layer is provided thereon to produce a three-dimensional transfer foil. CONSTITUTION:The releasable layer 2 consisting of a cellulosic polymer, an acrylic polymer or the like and having a thickness of 0.01-2mu is provided on the base sheet 1 consisting of a plastic film such as a polyester film. The protective layer 3 consisting of a thermosetting or thermoplastic resin and having a thickness of 1-3mu is provided on the releasable layer 2, if required, then a heat- formable resin such as a microcapsule foamable material is applied thereon by gravure printing to provide the foamable resin layer 4 having a thickness of 2- 50mu, and the contact layer 5 consisting of a synthetic rubber or the like and having a thickness of 1-10mu is provided thereon to produce the three-dimensional transer foil. When the transfer foil is subjected to a transferring operation, the foamable resin layer is foamed by the heat of a heated roll to produce a three- dimensional pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer foil, and particularly to a three-dimensional transfer foil that uses foamed resin to form a three-dimensional pattern during thermal transfer.

Conventionally, attempts have been made to print foamed resin using gravure printing, screen printing, silk printing, etc. and then heat it to foam it in the fields of construction, paper containers, decorative miscellaneous goods, art printing, etc.; It is difficult to apply to curved surfaces, details, and wraparound surfaces of products, and partial use 11.1. It has the disadvantage of extremely poor workability. Furthermore, since it is a simple printing process, it also has the disadvantage of poor physical and chemical properties such as abrasion resistance, chemical resistance, and stain resistance. It is also possible to combine golden spears of 11 yen using these methods.
It is 111#.

On the other hand, some types of transfer foils with patterns are known, but most of them have a pattern printed on the entire surface of KJ, such as by gravure printing, and the diameter of the pattern is about 2 to 3μ, and the transfer foil is It is difficult to obtain a sufficient three-dimensional effect* from a coating film.

The present invention uses heat during the transfer process to impart a three-dimensional pattern with a sufficient three-dimensional effect to the transfer coating film, and also enables easy and reliable application to curved surfaces of molded products and partial application to decorative miscellaneous goods, etc. We offer a new transfer foil that has excellent chemical properties and can also be freely combined with metals.

The transfer foil according to the present invention has a release layer on one side of the sheet substrate, a pattern layer made of foamed resin on top of the release layer in contact with or via a protective layer, and a metal reflective layer directly on the second side. When an adhesive layer is provided in between, the foamed resin layer foams during thermal transfer, creating a three-dimensional pattern.

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

FIG. 1 is a partial enlarged view schematically showing the three-dimensional transfer foil of the present invention, and FIG. 2 is a schematic diagram of the entire composite sheet obtained by transferring the transfer foil of FIG. 1 onto a sheet. This is an enlarged view. FIGS. 3 and 4 are partially enlarged views schematically showing the metal-like three-dimensional transfer foil of the present invention and a composite sheet obtained by transferring the same, respectively.

As a sheet base film 1, as is well known in conventional transfer foils, a release layer 2 of glass film such as polyester film, I:L, cellulose yarn, acrylic polymer, scratch-resistant wax, etc. At 2 o'clock, apply coating 11+14 from the base film to easy S.
1 dark (thickness 1 is used)
-tO, preferably 01 to 2μ.

The protective layer 3 provided as necessary may be made of acrylic polymer, polyvinyl chloride, cellulose, polynisdel, etc.
% hardening and C1 heat LIJ plastic name 'JR resin is used. l
r! It is preferable that f has good abrasion resistance and heat resistance. The thickness is preferably about 5μ or more -F, 1 to 3μ for 'f'Jt.

As the foamed resin layer 4, heat foaming t! Any type of fat will work, but microcapsules are the best! ! For example, a commercially available product such as Panyu Daiform S-612'' manufactured by Sayaka Kogyo Co., Ltd.
be done. It is applied by methods such as foaming, gravure printing, etc. Coating ID thickness tj, about 2-50μ, 'l
"J" is preferably 20 to 30 microns. If necessary, it can be colored with dyes, pigments, matting agents, etc. Of course, it can also be processed into multiple colors.

In the transfer foil shown in FIG. 1, an adhesive layer 5 is then provided, but in the transfer foil shown in FIG. 3, a metal reflective layer 6 is provided in front of this contact M layer 5. This metallic reflective layer can also give a metallic appearance to areas other than the foamed resin pattern, but in some cases it has the effect of improving the impact strength of the foamed resin layer. The gold reflection layer is preferably provided by a metal vapor deposition method, a metal powder coating method, or the like.

In the case of metal vapor deposition, the metals include aluminum, gold,
Silver, copper, chromium, niracle, nichrome, etc. are used, but aluminum is usually preferably used because of its luster, economy, etc. The deposition thickness is preferably 1d20 to 200 ttr, μ, especially 60η7. Preferably around μ. In the case of metal powder coating method, metal powders include aluminum, copper,
Silver, brass, etc. are used, but aluminum powder is particularly preferred.

Contact N layer 5v, 1, target tube bottom m1 to which the obtained transfer foil is to be transferred, foamed 4j7J fat layer 4 or metal reflective layer 6 and t dense M(
Any material that can be coated is fine, such as acrylic,
A grounding agent with thermal HJ Qpi properties such as JM vinyl type or synthetic rubber is used. ) Thickness: 1 to 10μ is normal, and the thickness of the contact layer can be adjusted depending on the coating thickness of the foamed resin layer.
That's a good thing. In other words, it is preferable to make the foaming resin layer thicker and the adhesive layer also thicker.If the foaming resin layer is thick and the contact layer is thin, the adhesion to the surface of the object to be transferred will be small to medium when the transfer force is 1 pressure. 5) It is easy to become.

The thus obtained transfer foil is exposed to the heat of the hot roll (
180 to 2!5t) The foamed resin layer is foamed at C) to form a three-dimensional pattern. Foaming ratio t: I: 2 times or more, preferably 5
~10 times, and can be arbitrarily selected depending on the type of foamed resin (or amount of foaming agent), etc.

Compared to a transfer agent that has an uneven pattern layer from the beginning, the transfer foil of the present invention has a foamed resin layer with a thickness that is about 2 times larger than the thickness after foaming.
Because JKN is good, the adhesive layer can be relatively thin, so even when transferring to fine details, workability (cutting defects, occurrence of cracks, etc.) is not impaired, and it is also economical in terms of raw materials. .

The transfer foil according to the present invention further has many features as follows.

(1) A beautiful three-dimensional foamed film can be obtained at the same time as stamping.

The foil before stamping is unfoamed and relatively thin, so it is not bulky even when rolled up.

(2) Since it has a release layer and a retention layer, it has excellent wear resistance, stain resistance, chemical resistance, etc.

(3) By selecting an appropriate adhesive, transfer processing can be performed on a wide range of surfaces, including flat and curved surfaces of plastic molded products, paper, leather, general plastic sheets, etc.

(4) Since the protective layer can be colored freely, a multicolored or metallic three-dimensional transfer film can be obtained.

Furthermore, the excellent characteristics originally possessed by the transfer foil are even more fully exerted by the structure of the present invention. It also has the advantages of υ(5) to (8).

(5) Since there is no need for a drying process different from printing or painting, it is possible to create beautiful decorations at low cost.

(6) Colors can be easily changed by simply replacing the transfer foil.

(7) The stamping device is easy to handle and does not require operator skill. You can also make quick crops.

(8) Large area (Nf'l with fine pattern ridges of course)
Can be stamped densely and has a beautiful metallic luster.

Next, the present invention will be explained based on Examples.

Actual Jt'iQ example 1゜) Lecithin-based mold release agent 504 is coated on a commercially available polyester film with II diameter of 25μ. A protective layer containing melamine-based 203 paint (No. 1 Shin Kagaku Kogyo Co., Ltd.) as a main ingredient was applied thereon so that the coating layer had a J speed of 3/l.

On the upper surface, a foamed resin layer was applied using a foaming agent "New Diform" containing an acrylic acid ester, S'-612 (Daime Nitika Kogyo), diluted with wotoluene and applied to a thickness of 15 II K using a special gravure roll. As an adhesive on the top surface, use acrylic acid ester type "Aron, 4-1001".
” (Toagosei Kagaku 1 millet) and vinyl chloride/vinyl acetate copolymer tyJ”fnka vinyl +, 1000A” (
Denki Kagaku Kogyo) mixed equal amounts of nitrocellulose "N" as the main ingredient
C-1# (Toyo Ink) added at 10% was applied using a gravure roll to a thickness of 3μ.

The thus obtained transfer foil 'a) ABS plate'' was transferred using a hot roll stamper G-300''+ manufactured by Taihei Kogyo Co., Ltd.

The transfer processing conditions are: roller rubber 7 thickness 30 times, shore hardness 80°, surface temperature 230°C, stamp speed 50mm.
/second.

The transfer film transferred onto the ABS board foamed at the same time as the transfer, and a three-dimensional pattern with a thickness of 80 μm was obtained.

Wave P#Q! The 1τJ adhesion to 'I' was so strong that even if I tried to stick Seronon's sticky tape on it and pull it off, it wouldn't come off. Since the coating film has elasticity and a suppurative film, it was also excellent in wear resistance.

When heat transferred onto decorative paper, a beautiful decorative effect was also obtained.

Example 2゜Thickness 25μ with one side surface treated with wax to give preformability
On a commercially available polyester film of; It was applied so that the density was 3/l. On the top surface thereof, a thick nitrification product "New Daiform" S-612 (a foaming agent containing acrylic acid ester) manufactured by Nippatsu Co., Ltd. (foaming agent containing acrylic acid ester) was diluted with toluene and applied using a gravure roll method to a thickness of 20 μm.

The pattern is the Gothic letters of ``Toyo Metallizing Co., Ltd.'' arranged in order of size from type 1 to type 9'f
: Printed in 2 colors.

As the next step, metal aluminum was vapor-deposited using a semi-continuous winding vapor deposition machine at a vacuum level of 3 x 10-''I'orr and a speed of 300 nt/min to an equivalent thickness of 500 λ.

The adhesive is “Aron A-100” manufactured by Toagosei Chemical Industry Co., Ltd.
1” (acrylic acid ester) and Denki Kagaku Kogyo Co., Ltd.
Add 10% of Toyo Ink Mfg. Co., Ltd.'s ``NC-1'' to trocellulose) to the base agent mixed in equal proportions of ``denkavinyl≠1000,4'' (vinyl iX/vinyl acetate copolymer).
% additive is used, and LivEarth is used.

It was applied to the required thickness using a coater.

The thus obtained transfer foil was stamped on an ABS board using a hot roll stamper G-300 manufactured by Taihei Kogyo Co., Ltd. Transfer processing conditions: rubber hardness 70 degrees, silicone rubber roll surface temperature 220 degrees Celsius, stamp speed 50 I+?
++I/sec.

Foaming layer 1 of the film transferred onto the ABS board foams due to heating during transfer, and the maximum appearance (including the protective trowel layer, adhesive layer, etc.)! ? - A three-dimensional pattern with a height of approximately 200μ was obtained. 1. The adhesion strength to the adhered material was also 4 = J, which was so strong that it was difficult to remove it even if the adhesive DESO was attached and tried to be peeled off. "t" on the coating film, ri 111
It is strong and has good wear resistance.

I also heat-transferred it onto decorative paper, which also produced a beautiful decorative effect.

[Brief explanation of the drawing]

FIGS. 1 and 3 are partially enlarged 11th side views schematically showing the transfer foil of the present invention, and FIGS. 2 and 4 show the transfer foil of FIGS. It is a partially enlarged view showing the composite sheet 1-'ffiff transferred to 1. Base film, 2. Release layer, 3. As necessary. dΦ layer to be provided, 4... Patterned foamed resin layer, 5...
・Adhesive layer, 6...Metal reflective layer, 7...
...Sheet material.

Claims (2)

[Claims] (1) A three-dimensional transfer foil comprising, on one side of a sheet substrate, a release layer, a pattern layer made of foamed resin directly or through a protective layer, and an adhesive layer thereon. (2) A three-dimensional transfer foil comprising a release layer on one side of a sheet base material, a pattern layer made of foamed resin directly or through a protective layer, and a metal reflective layer and an adhesive layer on top of the release layer.