JPH0429832A - Preparation of transparent thin film piece - Google Patents

Abstract

PURPOSE:To obtain easily the above transparent thin film piece with an arbitrary shape and dimension by a method wherein a releasing layer is provided on a base film and then, a transparent synthetic resin coating film layer is provided thereon and if necessary, cracks are formed thereon and blade apexes are brought into press- contact with this rear face and the blade apexes are slided while the film is folded into acute angle by means of the press-contacted parts and transparent synthetic resin coating film layer is peeled down thereby from the base film as thin film pieces. CONSTITUTION:A release layer 2 is provided on a base film 1 by means of printing or coating. A transparent synthetic resin coating layer 3 is provided on the release layer 2. Then, by pressing a mold 5 wherein if necessary, a pattern with required shape and dimension is constituted from the upper side of the transparent synthetic resin coating layer 3, a transparent thin film-formed film 7 wherein cracks 6 are provided on the transparent synthetic resin coating layer 3 or up to the releasing layer 2, is prepd. To obtain transparent thin film pieces 8 from the transparent thin film-formed film 4 like this or the transparent thin film-formed film wherein cracks 6 are formed, apexes of blades 9 of a body having blade apexes are brought into press-contact with the rear face of the film 4 or 7 in the width direction of the film and the press-contacted part is slide while the film 4 or 7 is folded in an acute angle thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to decorative thin film pieces such as glitter and sand, and more particularly to a method for producing a thin film piece made of a transparent body and a decorative transparent thin film produced by the method. Regarding pieces.

<Prior art> Traditionally, this type of decorative thin film piece has been made of sand grains of gold and silver foil powder obtained by dividing gold and silver foil into thin pieces, pearl pigment foil made of shell powder, mica pieces, scale pieces, etc. Metallic colored glitter and the like obtained by cutting a colored vapor-deposited film into thin pieces are known.

<Problems to be Solved by the Invention> However, in the above-mentioned conventional products, all decorative thin film pieces are opaque, so when applied to Hikihaku used as gold and silver thread, for example, the pattern of the Hikihaku base material , due to the blocking of colors, the surface of the resulting decorative material has a monotonous pattern,
There was a problem with it being colored.

In the field of decorative materials, as demands for product differentiation and image improvement have increased, the inventors of the present invention aimed to improve the drawbacks of the conventional products mentioned above, that is, opaque decorative thin film pieces, which spoil the design and taste of the base material. As a result of various research on making decorative thin film pieces transparent in order to prevent them from becoming wavy, we created a transparent synthetic resin film on top of a film whose surface had been subjected to mold release treatment, and after drying and curing it, we created a film. We found that the desired product could be easily obtained by peeling it off from the surface, and based on this knowledge, we completed the present invention.

<Means for solving the problems> That is, the present invention provides a release layer on any base film by printing or coating, and then coats the surface with a transparent synthetic resin coating consisting of a single layer or multiple layers. The cutting edge portion of an object having a coating knife-like cutting edge on the back side of a transparent thin film-forming film obtained by forming a layer and, if necessary, forming cracks in the desired shape in the transparent synthetic resin coating layer or even in the release layer. By press-contacting the transparent thin film-forming film and bending the transparent thin film-forming film at an acute angle at the press-contact portion, the transparent synthetic resin coating layer is formed from the base film alone or together with the release layer into a sand-shaped or desired-shaped thin film. A method for manufacturing a transparent thin film piece characterized by peeling it off as a piece, and various transparent thin film pieces obtained by the method.

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

As shown in FIG. 1, a release layer 2 is provided on an arbitrary base film 1 by printing or coating. As the base film 1 used here, for example, polyester film,
Plastic films such as nylon film, polypropylene film, polyethylene film, acetate film, polycarbonate film, paper, glassine paper, cellophane, aluminum foil, etc. with a thickness of 6 to 20 microns.
A single material having a diameter of about 0 microns or a composite material of the above materials is suitable.

To provide the mold release layer 2, a mold release material appropriately selected from, for example, an acrylic resin composition, a cellulose resin composition, a vinyl chloride-vinylidene chloride copolymer resin composition, a silicone resin composition, a wax-based composition, etc. It is sufficient to use a coating agent to form a film with a thickness of about 0.01 microns to several microns by gravure printing or a coating method.

Next, in order 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, etc. , 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, Urya melamine resin, benzoguanamine resin, alkyd resin, aminoalkyd resin, epoxy resin, phenol resin, etc. alone or in a mixture thereof, or a curing accelerator suitable for the mixture;
Paint additives such as antistatic agents, antifoaming agents, thickeners, and slip agents are added as appropriate and dissolved in an organic solvent, and desired colorants and decorative materials are added and dissolved or dispersed. Prepare a film-forming coating agent and apply it using a gravure printing machine, gravure coater, reverse roll coater, knife coater, kiss coater, spray coater, etc. to a thickness of about 0.1 micron to 500 microns, preferably from 5 microns. The coating film may be cured by applying a coating up to a thickness of approximately 100 microns as necessary and heating or baking, but the temperature for heating or baking in this case depends on the type of material used. Depending on the situation, the temperature may be adjusted within the range of room temperature to 200°C.

Next, in the thus obtained transparent thin film forming film 4, as shown in FIG. 2, cracks 6 are formed in the transparent synthetic resin coating layer 3 together with the release layer 2, if necessary. To show an example of the method, as shown in FIG. 3, by pressing a mold 5 having a pattern of a desired shape and size from above the transparent synthetic resin coating layer 3, the transparent synthetic resin coating layer 3 is 3, it is optimal to form a transparent thin film-forming film 7 in which cracks 6 are provided up to the hard-to-see layer 2. Other methods that can be used include heating and shrinking the transparent thin film-forming film 4, or excessively stretching the film 4.

In order to obtain a transparent thin film piece 8 from such a transparent thin film forming film 4 or a transparent thin film forming film 7 with cracks 6 formed therein, as shown in FIG. The transparent thin film is formed by pressing the tip of the cutting edge portion 9 of an object having a belt-like cutting edge in the width direction of the film, and sliding the film 4 or 7 while bending it at an acute angle at the pressed part. The transparent synthetic resin coating layer 3 of the film, together with the release layer 2, is subjected to the pressing force and bending force from the tip of the cutting edge portion 9, and cracks and peeling occur simultaneously, and cracks 6 have already been formed. If so, it peels off from the cracks and becomes a thin film piece, which is deposited on the tray 10 to obtain the transparent thin film piece 8 according to the present invention.

The size of the transparent thin film piece obtained by Naoko ＼ is 10
It is possible to have a size from micron square to about 5 cyn square, but in order to obtain a large area, it is necessary to adjust the strength of the transparent synthetic resin coating layer.

In addition, in order to adjust the shape, size, etc. of the transparent thin film piece 8 obtained when the transparent synthetic resin coating layer 3 is not provided with the cracks 6, the bending angle θ12 is adjusted by moving the bending angle adjusting roll 11. It is only necessary to change the bending angle, and in order to obtain a piece of the size of sand grains, the bending angle is usually about 5 degrees to 10 degrees. Further, it is preferable to provide a peeling plate 13 to guide the transparent thin film pieces 8 remaining on the surface of the base film after peeling off to the receiving tray 10 to improve recovery efficiency.

The present invention has the above-described structure, but the transparent thin film pieces obtained by the present invention are of a wide variety.For example, dyes or pigments are added to the coating material for forming the transparent synthetic resin coating layer 3. Colored transparent thin film pieces are made by mixing an appropriate amount of , or colored transparent thin film pieces made of a halftone pattern using halftone dot printing, and gold, silver, copper, aluminum, nickel, titanium, Decorative transparent thin film pieces made by dispersing chromium, iron, and other fine metal powders or metal foil powder; and other decorative materials in which mica, pearl pigments such as shell powder, and fluorescent substances such as zinc sulfide are dispersed. Alternatively, the transparent synthetic resin coating layer 3 may be made of two types of synthetic resins with different refractive indexes to form a two-layer structure with non-uniform coating thickness, thereby producing a transparent thin film piece with iris coloration. And also,
As shown in Figure 5, multiple transparent synthetic resin coating layers are provided,
A colored pigment is dispersed in the first transparent synthetic resin coating layer 14, and a pearl pigment is dispersed in the second transparent synthetic resin coating layer 15, and each layer is provided with unevenness and thickness unevenness. It has a wide variety of decorative effects, such as decorative three-dimensional transparent thin film pieces that give a three-dimensional effect and depth, and transparent thin film pieces that are thermosensitive or change color depending on the temperature by containing other temperature-indicating substances. Things are possible.

<Examples> Example 1 A long polyethylene terephthalate film wound into a roll with a thickness of 12 microns was used as the base film, and one side of the film was coated with 10 parts of acrylic resin, 10 parts of methyl ethyl ketone, 10 parts of toluene, 10 parts xylene,
A release coating consisting of 6 parts of butyl acetate was applied using a 160-mesh gravure roll coater, dried and baked to form a release layer with an average thickness of 0.5 microns, and then coated on the surface. , a paint film-forming agent having the following composition was applied using a reverse roll coater, and 180'0 was applied.
Baking was performed in a far-infrared oven for 5 seconds to provide a colored transparent synthetic resin coating layer to obtain a transparent thin film-forming film. Next, the band-shaped cutting edge of a coating knife is pressed against the back side of the film in the width direction of the film, and the film is bent and slid at the cutting edge so that the bending angle θ is about 10 degrees, and the average size is determined. A sand-shaped colored transparent thin film piece having a size of about 3n square and a thickness of about 5 microns was obtained.

Notes... [Coating agent for coating film formation] 1. Epoxy modified resin (60% solution)...
・40 parts 2, epoxy resin (50% solution)...
・・・・・・・・・ Part 8 3, Melamine resin (6096
solution) 12 parts 4, urea melamine resin (55Ly5 solution) 10 parts 5, benzoguanamine resin (60% solution) 10 parts 6, rosin Modified maleic acid resin (60% solution)...20 parts 7, curing accelerator......
・・・・・・・・・・・・・・・・・・・・・・・・0
．． Part 5 8, Toluene ・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・15 part 9, xylene ・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・12 parts 10, acetone ・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・ 12 parts 11, ethyl acetate ・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・ Part 6 12,
Butyl cellosolve ・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・ Part 3 13, Methyl alcohol ・・・・・・・・・・・・・・・・・・
・・・・・・・・・12 parts 14, oil-soluble dye yellow
・・・・・・・・・・・・・・・・・・0.5% by weight1
5. Oil-soluble dye red ・・・・・・・・・・・・・・・
...0.3% by weight16, antifoaming agent...
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・0.1% by weight17, Thickener...
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・ 1% by weight Example 2 A long polyethylene terephthalate film wound into a roll with a thickness of 16 microns was used as the base film, and the test was carried out on the film. A release layer similar to that in Example 1 was provided, and then a film-forming coating agent having the following composition was applied onto the surface using a 7-roll coater.
After baking in a far-infrared oven at °C for 20 seconds to form a transparent synthetic resin coating layer with a pearlescent luster, a press mold with a blade shape formed into a 5 mm square pattern was pressed onto the surface. Cracks were formed on the entire surface of the transparent synthetic resin coating layer. Thereafter, in the same manner as in Example 1, a transparent thin film piece having a pearlescent luster and having an average film thickness of 10 microns and measuring 5 mm square was obtained.

Notes... [Coating agent for coating film formation] 1. Epoxy modified resin (6096 solution)...3
0 parts 2, amino alkyd resin (55% solution)...20
Part 3, urea resin (50% solution)...
......10 parts 4, melamine resin (60% solution)...10 parts 5, NC'/
. R8 (3096 solution)・・・・・・・・・・・・・・・
・ 5 parts 6, rosin modified maleic acid resin (6096 solution)...10 parts 0.5 parts 18 parts 6 parts 12 parts 7, curing accelerator 8, toluene 9, xylene 10, acetone 11, methyl ethyl ketone...・・・・・・・・・
・・・・・・・・・・・・・・・・・・ Part 6 12, Methyl isobutyl ketone ・・・・・・・・・・・・・・・・
・・・・・・・・・Part 6 13, Butyl cellosolve・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・3 parts 14, Methyl alcohol・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・9 parts 15, antifoaming agent・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
...0.1% by weight16, thickener...
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・ 1% by weight 17, Synthetic pearl pigment・・・・・・・・・・・・・・・・・・・・・・・・・
... 2% by weight Example 3 A release layer was provided on the base film in the same manner as in Example 2,
Next, in place of the synthetic pearl pigment in the paint film-forming agent used in Example 2, 2% by weight of golden foil powder with an average size of 400 mesh made from a metal vapor-deposited film was added, and a pink oil-soluble powder was added. A decorative transparent thin film piece having an average size of 5 mm square and an average film thickness of 10 microns was obtained in the same manner as in Example 2 using a film-forming coating material containing 1% by weight of dye.

Example 4 On the release layer formed in Example 1, a coating film was prepared in which 2% by weight of a fluorescent pigment was added instead of the oil-soluble dyes yellow and red in the film-forming coating used in Example 1. In the same manner as in Example 1, using a forming coating material, a fluorescent transparent thin film piece having an average size of 3 mm square and an average film thickness of 5 microns was obtained.

Example 5 The paint film forming agent used in Example 2 was applied onto the transparent synthetic resin coating layer obtained in Example 1 to a non-uniform thickness using a reverse roll coater, and then coated in a far-infrared oven. After baking for 180'015 seconds, a press mold having a blade shape formed into a 10 mm square pattern was pressed onto the surface to form cracks on the entire surface.

After that, in the same way as in Example 1, the size is 10 mm square,
A yellow pearl-like translucent thin film piece with an average film thickness of 15 microns and a large thickness unevenness with a three-dimensional effect and a deep yellow pearl-like appearance was obtained.

<Effects of the Invention> The method for producing transparent thin film pieces according to the present invention differs from conventional foil dividing and crushing methods or film cutting methods, in that the coating film formed by printing or coating method is Since cracks are formed using bending pressure, bending pressure, and bending angle, and the product is peeled off from the cracks, it is not only easy to obtain products of any shape and size, but also economical with excellent mass production and homogeneity. This is a typical method.

Furthermore, since the obtained transparent thin film pieces can be mixed with various decorative materials, they can have a wide variety of decorative effects, and in terms of applications, they can have so-called so-called sand particles that cannot be obtained with conventional opaque sand particles. It can be layered as a transparent thin film piece without spoiling the color or pattern of the base material of the decorative sticker, and if the thickness of the transparent thin film piece is varied, it can create an even more decorative effect with a three-dimensional effect and depth. For example, it can be used as a foil for gold and silver thread, display sheets, inch rears, etc.
It has high industrial value as it can be widely used for building material sheets and other purposes.

[Brief explanation of the drawing]

Figures 1 and 2 are partially enlarged cross-sectional illustrations showing representative examples of transparent thin film forming films, which are intermediate steps in the method for producing transparent thin film pieces according to the present invention, and Figure 3 shows cracks in the transparent synthetic resin coating layer. FIG. 4 is a partially enlarged schematic explanatory diagram showing the process of peeling off the transparent thin film piece. FIG. 5 is a partially enlarged schematic diagram showing a different embodiment of the transparent thin film forming film. It is a cross-sectional explanatory view. DESCRIPTION OF SYMBOLS 1... Base film, 2... Release layer, 3... Transparent synthetic resin coating layer, 4... Transparent thin film forming film, 5...
...Mold, 6...Crack, 7...Transparent thin film forming film, 8...Transparent thin film piece, 9...Blade edge, 10...
saucer, 11... bending angle adjustment roll, 12... bending angle θ, 13... peeling plate, 14... transparent synthetic resin coating layer, 15... transparent synthetic resin coating layer

Claims (7)

[Claims] (1) A release layer is provided on any base film by printing or coating means, and then a transparent synthetic resin coating layer consisting of a single layer or multiple layers is provided on the surface, and if necessary, the transparent synthetic resin coating layer is provided. A cutting edge portion of an object having a coating knife-like cutting edge is pressed onto the back surface of the transparent thin film-forming film obtained by forming cracks of a desired shape in the layer or even in the release layer, and the transparent thin film is formed on the pressed portion. A transparent thin film piece characterized in that by sliding the film while bending it at an acute angle, the transparent synthetic resin coating layer is peeled off from the base film alone or together with the release layer as a sand-like or desired-shaped thin film piece. manufacturing method. (2) The method for producing a transparent thin film piece according to claim 1, wherein the transparent synthetic resin coating layer has cracks formed by press working with a mold. (3) Claim 1, in which the transparent synthetic resin coating layer is colored with a dye or pigment into a desired pattern.
A transparent thin film piece manufactured by the method for manufacturing a transparent thin film piece according to item 1 or 2. (4) A transparent product 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 fine metal powder or metal foil powder. Thin film piece. (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 layer contains a fluorescent substance. (7) The transparent synthetic resin coating layer is made up of multiple layers, each layer containing a different decorative material, and each layer is given unevenness and thickness to create a three-dimensional effect and depth. A transparent thin film piece manufactured by the method for manufacturing a transparent thin film piece according to claim 1 or 2.