JPH0780248B2 - Method for producing transparent thin film piece - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a decorative thin film piece such as glitter or sandpaper, and particularly to a method for producing a thin film piece made of a transparent body and a decorative transparent thin film piece produced by the producing method. Regarding

<Prior Art> Conventionally, as this type of decorative thin film piece, sand balls of gold and silver foil powder obtained by dividing gold and silver foil into strips, pearl pigment foil composed of shell powder, mica pieces, scales, or the like, or A metallic color glitter obtained by finely cutting a colored vapor deposition film is known.

<Problems to be Solved by the Invention> However, in the above conventional products, since all the decorative thin film pieces are opaque, for example, when applied to a ground foil used as a gold and silver thread, the pattern of the ground foil base is used. , The surface of the obtained decorative material is a monotonous pattern because of the blocking of color,
There was a problem that it would be colored.

In the field of decorative materials, the present inventor has improved the drawbacks of folded patterns and the above conventional products, that is, opaque decorative thin film pieces by increasing demands for product differentiation, image improvement, etc., and impair the design and taste of the base material. As a result of various studies on the transparency of decorative thin film pieces, a film of transparent synthetic resin was provided on the surface of the film with release treatment, dried and cured, and then the film was formed. Knowing that the desired product can be easily obtained by peeling it off from the surface, the present invention has been completed based on such knowledge.

<Means for Solving Problems> That is, the present invention provides a release layer on any base film by printing or coating means, and then a transparent synthetic resin coating film comprising a single layer or a plurality of layers on the surface. An object having a cutting edge like a coating knife on the back side of a transparent thin film-forming film obtained by forming a layer and forming a crack of a desired shape in the transparent synthetic resin coating layer or in the release layer. Of the base material film by pressing the edge portion of the transparent thin film forming film and sliding the transparent thin film forming film at an acute angle by sliding the transparent thin film forming film alone or together with the release layer into a sandstone shape or a desired shape. The method for producing a transparent thin film piece is characterized in that it is peeled off as a thin film piece having the above shape, and various transparent thin film pieces obtained by the method.

The present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, a release layer 2 is provided on an arbitrary substrate film 1 by printing or coating. As the base film 1 used here, for example, polyester film,
Nylon film, polypropylene film, polyethylene film, acetate film, polycarbonate film and other plastic films, and paper, glassine paper, cellophane, aluminum foil, etc. with a thickness of 6 microns to 20
A material of about 0 micron alone or a composite of the above materials is suitable.

To provide the release layer 2, for example, a release agent appropriately selected from an acrylic resin composition, a cellulose resin composition, a vinyl chloride-vinylidene chloride copolymer resin composition, a silicone resin composition, a wax composition, and the like. The agent may be provided by a gravure printing method, a coating method or the like so as to have a thickness of about 0.01 to several microns.

Next, to provide the transparent synthetic resin coating layer 3 on the surface of the release layer 2, for example, acrylic resin, polystyrene, polyester, polyamide, polyvinyl chloride, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer. , Chlorinated rubber, cyclized rubber, polyvinyl butyral, cellulose acetate, nitrocellulose, polycarbonate, ketone resin, aldehyde resin, aliphatic hydrocarbon resin, rosin-modified maleic acid resin, polyurethane, alkylphenol resin, urea resin, melamine resin, Urea melamine resin, benzoguanamine resin, alkyd resin, aminoalkyd resin, epoxy resin, phenolic resin, a simple substance or a mixture thereof, or a curing accelerator suitable for the mixture,
Coating additives such as antistatic agents, defoaming agents, thickeners, slip agents, etc. are added as appropriate and dissolved in an organic solvent, and desired coloring materials and decoration materials are added and dissolved or dispersed. Prepare a coating agent for film formation, and use a gravure printer, gravure coater, reverse roll coater, knife coater, kiss coater, spray coater, etc. to a thickness of about 0.1 to 500 microns, preferably 5 microns. From 1
It is possible to appropriately select and apply up to about 00 microns and heat dry or bake to cure the coating film,
In this case, the heating / drying or baking temperature may be adjusted within the range of room temperature to 200 ° C. depending on the type of material used.

The transparent thin film-forming film 4 thus obtained is then sent to the next peeling step as it is, or before that, as shown in FIG. A crack 6 is formed together with the mold. As shown in FIG. 3, an example of a method of forming the crack 6 is shown in FIG. 3, in which a mold having a desired shape and size is formed from above the transparent synthetic resin coating layer 3. By pressing 5, the transparent synthetic resin coating layer 3 or the release layer 2
It is most suitable to use the transparent thin film forming film 7 with the cracks 6 provided up to the end. As another method, a method of heat-shrinking the transparent thin film forming film 4 or the film 4
A method of excessively stretching can be used.

To obtain the transparent thin film piece 8 from the transparent thin film forming film 4 or the transparent thin film forming film 7 having the cracks 6 formed thereon, as shown in FIG. When the tip of the cutting edge portion 9 of an object having a band-shaped cutting edge is pressed against the width direction of the film, and the film 4 or 7 is bent at an acute angle and slid, the transparent thin film-forming film is transparently synthesized. The resin coating film layer 3 is subjected to pressure contact force and bending force by the tip of the blade edge portion 9 together with the release layer 2 to cause cracks and peeling at the same time,
When the crack 6 is already formed, it is peeled off from the crack and deposited as a thin film piece on the pan 10 to obtain the transparent thin film piece 8 according to the present invention. The size of the transparent thin film piece obtained here can be from 10 microns square to 5 cm square, but it is necessary to adjust the strength of the transparent synthetic resin coating layer when obtaining a large area. Become.

Further, in order to adjust the shape, size, etc. of the transparent thin film piece 8 obtained when the transparent synthetic resin coating film layer 3 is not provided with the cracks 6, the bending angle .theta.
It suffices to change 12 and normally, a bending angle of about 5 to 10 degrees is suitable for obtaining a sandbag size. Further, the transparent thin film piece 8 remaining on the substrate film surface after peeling
It is advisable to provide a peeling plate 13 for guiding the liquid to the tray 10 to improve the recovery efficiency.

Although the present invention has the above-mentioned constitution, the transparent thin film piece obtained by the present invention covers a wide variety of things, for example, a dye or a pigment in the coating material for forming the transparent synthetic resin coating layer 3. A colored transparent thin film piece by mixing an appropriate amount of, or a colored transparent thin film piece composed of a halftone dot pattern using a halftone dot printing method, gold, silver, copper, aluminum, nickel, titanium, Decorative transparent thin film pieces made by dispersing fine metal powder or metal foil powder of chromium, iron or the like, other pearl pigments such as mica and shell powder as decorative materials,
A two-layer structure in which a fluorescent substance such as zinc sulfide is dispersed, or the transparent synthetic resin coating layer 3 is formed of two kinds of synthetic resins having different refractive indexes so that the coating film thickness is not uniform. The transparent thin film piece for iris coloring is formed as a result of the above, or a plurality of transparent synthetic resin coating layers are provided as shown in FIG. A colored solid pigment is dispersed in the second transparent synthetic resin coating layer 15, and a pearl pigment is dispersed in the transparent synthetic resin coating layer 15 of the second layer. A thin film piece, a transparent thin film piece containing a temperature-indicating substance or the like and containing a temperature-indicating substance or the like, and a transparent thin film piece having various decorative effects are possible.

<Example> Example 1 A polyethylene terephthalate film having a thickness of 12 microns and wound in a roll shape was used as a base film.
On one side of the film, a mold release coating composition consisting of 10 parts of acrylic resin, 10 parts of methyl ethyl ketone, 10 parts of toluene, 10 parts of xylene and 6 parts of butyl acetate was applied, dried and baked with a 160 mesh gravure roll coater. Go to average thickness 0.
A 5 micron release layer is formed, then a coating film-forming coating agent having the following composition is applied on the surface using a reverse roll coater, and baked in a far infrared furnace at 180 ° C for 15 seconds. A transparent thin film forming film was obtained by providing a transparent synthetic resin coating layer which was colored by. Then, while the strip-shaped blade edge of the coating knife is pressed against the back surface of the film in the width direction of the film, the film is slid while bending at the blade edge portion so that the bending angle θ becomes about 10 degrees, and the average size is obtained. Is about 3m
A sand-like colored transparent thin film piece having a square shape and a thickness of about 5 microns was obtained.

Note: [Coating for forming coating film] 1. Epoxy-modified resin (60% solution) ...... 40 parts 2. Epoxy resin (50% solution) …… 8 parts 3. Melamine resin (60% solution) …… 12 parts 4. Ureamelamine resin (55% solution) …… 10 parts 5. Benzoguanamine resin (60% solution) …… 10 parts 6. Rosin-modified maleic acid resin (60% solution) …… 20 parts
7. Curing accelerator: 0.5 parts 8. Toluene: 15 parts 9. Xylene: 12 parts 10. Acetone: 12 parts 11. Ethyl acetate: 6 parts 12. Butyl cellosolve: 3 parts 13. Methyl Alcohol: 12 parts 14. Oil-soluble dye yellow: 0.5% by weight 15. Oil-soluble dye red: 0.3% by weight 16. Defoamer: 0.1% by weight 17. Thickener: 1% by weight Example 2 Using a long length 16 micron thick polyethylene terephthalate film wound as a base film,
A release layer similar to that used in Example 1 was provided on the film, and then a coating film-forming coating agent having the following composition was applied to the surface using a reverse roll coater, and the coating was applied at 180 ° C. for 2 hours.
After baking in a far-infrared furnace for 0 seconds to form a transparent synthetic resin coating layer having a pearly luster, a 5 mm square pattern is pressed on the surface of the surface of the press die that constitutes a blade die for transparent synthesis. Cracks were formed on the entire surface of the resin coating film layer. After that, in the same manner as in Example 1, a transparent thin film piece having a pearly luster and having an average film thickness of 10 μm in a 5 mm square was obtained.

Note: [Coating for forming coating film] 1. Epoxy-modified resin (60% solution) ...... 30 parts 2. Aminoalkyd resin (55% solution) ...... 20 parts 3. Urea resin (50% solution) ...... 10 Part 4. Melamine resin (60% solution) …… 10 parts 5.NC1 / 16RS (30% solution) …… 5 parts 6. Rosin-modified maleic acid resin (60% solution) …… 10 parts
7. Curing accelerator: 0.5 parts 8. Toluene: 18 parts 9. Xylene: 6 parts 10. Acetone: 12 parts 11. Methyl ethyl ketone: 6 parts 12. Methyl isobutyl ketone: 6 parts 13. Butylcellosolve 3 parts 14. Methyl alcohol 9 parts 15. Defoamer 0.1% by weight 16. Thickener 1% by weight 17. Synthetic pearl pigment 2% by weight Example 3 Example 3 A release layer is provided on the base film in the same manner as in 2,
Then, in place of the synthetic pearl pigment in the coating composition used in Example 2, 2% by weight of gold foil powder having an average size of 400 mesh produced from a metal vapor-deposited film was added, and a pink oil solubility Using a coating agent for forming a coating film containing 1% by weight of a dye,
In the same manner as in Example 2, the average thickness is 5 mm square and the average film thickness is
A 10 micron piece of decorative transparent film was obtained.

Example 4 A coating film obtained by adding 2% by weight of a fluorescent pigment on the release layer formed in Example 1 instead of the oil-soluble dyes yellow and red in the coating film forming coating composition used in Example 1. Using the forming coating agent, in the same manner as in Example 1, a transparent thin film piece emitting fluorescence having an average size of 3 mm 2 and an average film thickness of 5 μm was obtained.

Example 5 On the transparent synthetic resin coating layer obtained in Example 1, the coating film-forming coating agent used in Example 2 was applied to a non-uniform film thickness using a reverse roll coater, and then applied in a far-infrared furnace for 180 After baking at 15 ° C. for 15 seconds, a press die having a blade die was pressed on the surface with a 10 mm square pattern to form cracks on the entire surface. Then, in the same manner as in Example 1, a semi-transparent thin film piece having a size of 10 mm square, an average film thickness of 15 μm, a large three-dimensional effect with large unevenness of film thickness, and a deep yellow pearl-like thin film was obtained.

<Effects of the Invention> The method for producing a transparent thin film piece according to the present invention is different from the conventional method of dividing or crushing a foil, or a cutting method such as a film. It is easy to obtain any shape and size because of the fact that cracks are formed using the bending pressure and bending angle and peeled off from the cracks. Method.

Furthermore, since the obtained transparent thin film piece can be mixed with various decorative materials, a variety of decorative effects can be obtained, and in terms of application, so-called opaque sandpaper, etc., cannot be obtained. It can be laminated as a transparent thin film piece that does not impair the color and pattern taste of the base of the decorative sheet, and if the film thickness of the transparent thin film piece is changed, it gives a three-dimensional effect and a deeper decorative effect. It becomes rich, for example, foil for gold and silver threads, display sheets, interiors,
It has a high industrial utility value because it can be widely used for building material sheets and other applications.

[Brief description of drawings]

1 and 2 are partially enlarged sectional views showing a typical example of a transparent thin film forming film which is an intermediate step of the method for producing a transparent thin film piece according to the present invention, and FIG. 3 is a crack in a transparent synthetic resin coating film layer. FIG. 4 is a partially enlarged schematic explanatory view of a step of forming a transparent thin film, FIG. 4 is a partially enlarged schematic explanatory view showing a step of peeling a transparent thin film piece, and FIG. FIG. 1 ... Substrate film, 2 ... Release layer, 3 ... Transparent synthetic resin coating layer, 4 ... Transparent thin film forming film, 5 ... Mold,
6 ... Split, 7 ... Transparent thin film forming film, 8 ... Transparent thin film piece, 9 ... Blade edge, 10 ... Sauce, 11 ... Bending angle adjusting roll, 12 ... Bending angle θ, 13 ... Release plate, 14 ... Transparent synthetic resin coating layer, 15 ... Transparent synthetic resin coating layer

Claims (7)

[Claims] 1. A release layer is provided on any substrate film by printing or coating means, and then a transparent synthetic resin coating layer consisting of a single layer or a plurality of layers is provided on the surface, or as it is, or The edge portion of an object having a blade edge like a coating knife is pressed against the back surface of a transparent thin film-forming film obtained by forming cracks of a desired shape in the transparent synthetic resin coating layer or even in the release layer and the pressure contact thereof. By bending and sliding the transparent thin film-forming film at a portion at an acute angle, it is possible to peel off the transparent synthetic resin coating film layer from the base film alone or together with the release layer as a thin film piece in a sand ball shape or a desired shape. A method for producing a transparent thin film piece characterized. 2. The method for producing a transparent thin film piece according to claim 1, wherein the transparent synthetic resin coating film layer has cracks formed by pressing with a mold. 3. The method for producing a transparent thin film piece according to claim 1 or 2, wherein the transparent synthetic resin coating layer is colored in a desired pattern with a dye or a pigment. Transparent thin film pieces. 4. A transparent synthetic resin coating film layer containing a fine metal powder or a metal foil powder, which is produced by the method for producing a transparent thin film piece according to claim 1 or 2. Transparent thin film pieces. 5. A transparent thin film piece produced by the method for producing a transparent thin film piece according to claim 1 or 2, wherein the transparent synthetic resin coating layer contains a pearl pigment. 6. A transparent thin film piece produced by the method for producing a transparent thin film piece according to claim 1 or 2, wherein the transparent synthetic resin coating film layer contains a fluorescent substance. 7. A transparent synthetic resin coating film layer comprising a plurality of layers, each layer containing different decorative materials, and each layer being provided with unevenness and thickness unevenness to give a three-dimensional effect and depth. A transparent thin film piece produced by the method for producing a transparent thin film piece according to claim 1 or 2.