JPH07329112A - Transfer foil for laser marking and manufacture of molded article with decorating pattern, utilizing transfer foil - Google Patents

Abstract

PURPOSE:To manufacture a molded article with a decorating pattern, which has good economy even in the case where patterns for a small lot become useless and which is immediately applicable to modification of and addition to patterns. CONSTITUTION:A bonding layer 7 of a transfer foil for laser marking, having a transfer layer 70 wherein each layer of a peeling layer 2, a masking layer 5 having a punched pattern part 3 and a laser marking-predetermined part 4, a single-colored layer 6 covering at least the punched pattern part 3 and the laser marking-predetermined part 4, and the bonding layer 7 is successively laminated onto a base sheet, is contacted closely to the surface of a plastic molding 9. After application of heat under pressure, the base sheet is peeled off. A transfer molded article having the transfer layer 70 formed on the surface of the plastic molding 9 is obtained prior to the laser marking and, by laser- marking the laser marking-predetermined part 4 of the masking layer 5, the single-color layer 6 is exposed in pattern forms.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a molded product with a pattern to be used as a final product such as a cassette lid of AV equipment, a front panel and buttons, a frame part of a camera, a key top of a personal computer, an instrument panel part of an automobile. The present invention relates to a transfer foil for laser marking for producing a product and a method for producing a molded article with a pattern using the transfer foil.

[0002]

2. Description of the Related Art On the surface of parts such as cassette lids, front panels and buttons of commercially available AV equipment, camera frame parts, etc., for example, the manufacturer company name (including the set manufacturer name) of the finished product and the distributor company name. , Product name, product number,
Basic patterns such as a part display name of a sensor part and a mode display name such as ON / OFF display are formed. Also,
Basic patterns such as alphabets, numbers and symbols are formed on the surface of parts such as key tops of personal computers and instrument panel parts of automobiles. By the way, most of the markets for AV equipment, cameras, personal computers, and instrument panels for automobiles are in Japan and English-speaking countries. Therefore, the character used for the basic pattern is a character expressed in a main language such as Japanese or / and English. Since such a basic pattern is formed on a large lot of finished parts,
Hereinafter, the basic pattern is referred to as a large lot pattern.

On the other hand, in addition to the above-mentioned basic pattern, the parts sample presented by the parts manufacturer to the set maker as a prototype includes, as the prototype presentation pattern, the name of the parts manufacturer and distributor, the part name, the part number, and the lot number. Is forming.
Since the prototype presentation is only from the start to the end of the evaluation of the prototype, the prototype presentation pattern is formed in the small lot production part sample compared to the completed part.

In addition, for a completed part exported to a country other than the main language country, or a part sample for presenting a prototype to a country other than the main language country, a pattern for a large lot such as a product name, a product number, and a part display name. The characters translated into the language of the export destination country are also written as a non-major country translation word pattern directly above or below the large lot pattern. Markets outside of these major language countries are small. Therefore, the amount of finished parts to be exported or the amount of parts samples to be exported will be very small. Therefore, the translation language pattern of the non-main country is formed in the finished part or part sample of a small production amount, that is, a small lot, as compared with the production amount for the main countries.

Hereinafter, the prototype presentation pattern and the non-main country translated word pattern are collectively referred to as a small lot pattern.

As an example of a part sample, as shown in FIG. 9, it has a light-shielding part and a window part, and the manufacturer and distributor company name and product name, part display name, mode display name, part manufacturer and distributor company name,
There is a part number formed by a colored layer.
Therefore, a method of manufacturing a molded product with a pattern, which is considered as a method of manufacturing this part sample, will be described below.

(1) In addition to the window portion on the surface of a light-transmissive plastic molded product, a concealing layer is formed as a light-shielding portion by screen printing using a concealing ink, and screen printing using a colored ink is used for production and sale. Original company name, product name, part display name,
A small lot showing the manufacturer's name and part number of the parts manufacturer by screen printing using an ink containing an optional white pigment by forming a pattern coloring layer for the large lot, which shows the mode display name, on the light-shielding part. The pattern coloring layer for a pattern is formed on the light-shielding portion at another position of the pattern coloring layer for a large lot. Finally,
Dry each colored layer.

Thus, on the surface of the plastic molded article,
There are the following techniques as techniques that do not require direct screen printing many times and are unlikely to limit the shape of the molded product. (2) A release layer is formed on a base sheet, and a concealing layer is printed with a window, a manufacturer / distributor company name, a product name, a part display name, a mode display name, a part manufacturer / distributor company name, and a part number without a pattern part. Formed and printed a pattern coloring layer for a large lot so as to cover the punching pattern part showing the manufacturer name, product name, part display name, mode display name, and the parts manufacturer name and part number Prepare a transfer foil with a pattern coloring layer for small lots printed to cover the punched pattern part and printing the adhesive layer on the entire surface, and adhere the adhesive layer of this transfer foil to the surface of the translucent plastic molded product. After that, the base sheet is peeled off by heating and pressing, and only the transfer layer is transferred to the surface of the plastic molded product for decoration. Also,
A molding simultaneous transfer method is a more rational method of transfer. The molding simultaneous transfer method is that the transfer foil is sandwiched in the injection molding die and the molding resin is injected and filled in the cavity.
This is a method in which a resin molded article is cooled and at the same time a transfer foil is adhered to the surface thereof, and then the base sheet is peeled off, and the transfer layer is transferred to the surface of the resin molded article for decoration.

In the above (1) and (2), the small lot pattern coloring layer is formed of a printing plate different from the large lot pattern coloring layer. The reason is that, if the same printing plate is used, if the small lot production is completed and the production is switched to the large lot production, and the small lot pattern coloring layer is no longer needed, in (1), the small lot pattern is used. It is necessary to newly prepare a screen printing plate having only the pattern coloring layer for large lots without the coloring layer, and in (2), the transfer foil having only the pattern coloring layer for large lots without the pattern coloring layer for small lots is prepared. This is because it must be newly prepared.

[0010]

However, the above-mentioned prior art has the following problems.

(1) is inferior in production efficiency because the surface of the light-transmissive plastic molded product must be directly screen-printed at least twice and a drying step is required. Further, since screen printing cannot be applied to a three-dimensional curved surface having a rising edge, the shape of the patterned molded product is limited.

Further, (1) is a case where after the production of a small lot is finished and the production is switched to the large lot and the pattern for the small lot is no longer needed, the screen printing plate for forming the pattern coloring layer for the small lot is discarded. Because it must be done, the economy is poor.

Further, in (1), when a large lot pattern needs to be changed or added, a screen printing plate for forming the changed or added pattern must be newly prepared. It takes time and money, and it is not possible to deal with pattern addition and replenishment immediately.

In (2), when the small lot production is over and the production is switched to the large lot production and the small lot pattern is no longer needed, the printing plate for forming the concealing layer and the small lot pattern coloring layer are formed. It is necessary to discard the printing plate for printing, and prepare a printing plate for forming the concealing layer for forming only the pattern for large lots, perform printing, and prepare a completely different transfer foil. For this reason, it is necessary to prepare a printing plate and a transfer foil only for forming the pattern coloring layer for a small lot, which is wasteful and economically unfavorable.

In addition, (2) is, when it is necessary to change or add a pattern for a large lot pattern,
Discarding the printing plate for forming the concealing layer and the printing plate for forming the pattern coloring layer for large lots, and removing pattern part corresponding to the change or addition of the manufacturer's company name, product name, site display name, etc. A printing plate for forming a concealing layer having and a printing plate for forming a pattern coloring layer for a large lot that has been changed or added are newly prepared and printed.
You have to prepare a completely different transfer foil. For this reason,
Each time you change or add a pattern, you have to prepare a printing plate and transfer foil, which has time, labor, and cost, and it is not economical, and you can immediately respond to changes and additions of patterns of molded products with patterns. Can not.

Therefore, the present invention solves the above problems and produces a molded product with a pattern which is economical even if the pattern for a small lot is unnecessary and can immediately respond to the change or addition of the pattern. It is an object of the present invention to provide a transfer foil for laser marking and a method for producing a molded article with a pattern using the transfer foil.

[0017]

In order to achieve the above-mentioned object, a transfer foil for laser marking of the present invention is a concealing layer having a release layer, a removal pattern portion and a laser marking planned portion on a base sheet. The structure has a transfer layer in which each layer of a single color layer and an adhesive layer that covers at least the cut pattern portion and the planned laser marking portion is sequentially laminated.

In the laser marking transfer foil, the concealing layer has a laser marking second scheduled portion at a position different from the laser marking scheduled portion, and the single color so as to cover the laser marking second scheduled portion. A different color layer for laser marking having a color different from that of the layer may be formed.

In the transfer foil for laser marking, the concealing layer has a second blank pattern portion, and a different color layer for blank pattern having a color different from the single color layer so as to cover the second blank pattern portion. It may be configured to be formed.

The method for producing a molded article with a pattern using the transfer foil for laser marking of the present invention comprises the steps of bringing the adhesive layer of any one of the transfer foils for laser marking into close contact with the surface of the plastic molded article, followed by heating and pressing. , The base sheet is peeled off to obtain a transfer molded product before the laser marking in which the transfer layer is formed on the surface of the plastic molded product, and the laser marking portion of the hiding layer is laser-marked to expose the single color layer in a pattern. It was configured.

The method for producing a molded product with a pattern using the transfer foil for laser marking of the present invention comprises sandwiching one of the transfer foils for laser marking in an injection molding die, and filling the cavity with injection molding resin. After cooling, a plastic molded product is obtained, and at the same time, a transfer foil is adhered to the surface of the plastic molded product, and then the base sheet is peeled off to obtain an in-mold molded product with a transfer layer formed on the surface of the plastic molded product before laser marking. The masking layer was then laser-marked at the intended laser marking portion to expose the single color layer in a pattern.

The method for producing a molded article with a pattern using the transfer foil for laser marking of the present invention comprises the steps of bringing the adhesive layer of any one of the transfer foils for laser marking into close contact with the surface of the plastic molded article, followed by heating and pressing. Then, the substrate sheet was peeled off to obtain a transfer molded product before laser marking in which a transfer layer was formed on the surface of the plastic molded product.

The method of producing a molded product with a pattern using the transfer foil for laser marking of the present invention comprises sandwiching one of the transfer foils for laser marking in an injection molding die and injecting a molding resin into the cavity to fill the cavity. After cooling, a plastic molded product is obtained, and at the same time, a transfer foil is adhered to the surface of the plastic molded product, and then the base sheet is peeled off to obtain an in-mold molded product with a transfer layer formed on the surface of the plastic molded product before laser marking. It was set to get.

The transfer foil for laser marking of the present invention and the method for producing a molded article with a pattern using this transfer foil will be described below with reference to the drawings.

First, the transfer foil 8 for laser marking will be described.

The base sheet 1 is to be peeled off after the laser marking transfer foil 8 is adhered to or formed on the plastic molded product 9. As the base sheet 1, a plastic film or paper such as polyethylene terephthalate, polypropylene, polyethylene, nylon, cellophane or the like, or a composite film thereof, which is used as a base sheet for a normal transfer foil, is used. Further, in order to impart further releasability to the base sheet 1, a release layer which is peeled off together with the base sheet 1 after transfer can be formed on the base sheet 1. Examples of the material of the release layer include melamine resin, silicone resin, fluororesin, fibrin resin, urea resin, polyolefin resin, and paraffin resin.

The release layer 2 is formed wholly or partially on the base sheet 1 or the release layer. The peeling layer 2 is a layer that becomes the outermost surface of the transferred material by peeling from the base sheet 1 or the release layer when the base sheet 1 is peeled. When the peeling layer 2 causes delamination, the delaminated surface is the outermost surface. In addition, when the release layer causes interlayer release, the release layer remaining on the surface of the transfer layer 70 is
It is the outermost surface of the transferred material. Examples of the material of the release layer include polyacrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, and vinyl chloride-vinyl acetate copolymer. Copolymers such as a system resin and an ethylene-vinyl acetate copolymer system resin may be used. When the release layer 2 is required to have hardness, a photocurable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin may be selected and used. The release layer 2 may be colored or uncolored. Examples of the method for forming the release layer 2 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure coating method and a screen printing method. The peeling layer 2 may have a two-layer structure if necessary, and the upper layer may be a hard coat layer using a thermosetting resin, an ultraviolet curable resin, an electron beam curable resin, or the like. The dry film thickness of the release layer 2 is
There is a range of 0.5 μm to 2 μm, and 0.8 μm to 1.3 μ
m is preferred.

The hiding layer 5 is a layer for hiding the color existing under the hiding layer 5 after the transfer layer 70 of the laser marking transfer foil 8 is formed on the plastic molded product 9. As a material of the hiding layer 5, there is a material in which a hiding colorant such as carbon black is contained in a resin binder such as an acrylic resin or a polyester resin. As a method of forming the concealing layer 5, there are a usual printing method such as gravure printing and screen printing, and a coating method such as a roll coating method. It should be noted that the hiding layer 5 may basically have any color as long as it can hide the color of the base, so that any color may be used as long as it is hiding, but it is preferable that the reflectance is low. Further, it may be plain or may have a pattern. A layer having metallic luster may be formed as the hiding layer 5. The layer having metallic luster can be obtained by forming it by a vacuum vapor deposition method, a sputtering method, an ion plating method, attaching a metal foil, or printing with a metallic pigment ink.

The concealing layer 5 has a cut pattern portion 3 and a laser marking planned portion 4. The concealing layer 5 does not need to be formed on the entire surface of the peeling layer 2 as long as it has at least the cut pattern portion 3 and has the planned laser marking portion 4.

The cut pattern portion 3 has a single color layer 6 which will be described later.
Is a through hole for exposing the. This through hole is expressed as a pattern formed on the surface of a cassette lid of AV equipment, front panel and buttons, parts such as camera frame parts, or finished parts such as key tops of personal computers and instrument panel parts of automobiles. Has been done. Specifically, manufacturer company name (including set manufacturer name), distributor company name, product name, product number, part display name of sensor part, mode display name such as ON / OFF display, Japanese characters, alphabets, There are patterns such as numbers, symbols and pictures.

The laser marking planned portion 4 is a portion where the masking layer 5 is removed by laser marking after transfer. The removed part, that is, laser marking mark 18
Then, the single color layer 6 that is hidden under the hiding layer 5 is exposed.

When the prototype is presented, the laser marking scheduled portion 4 is exposed by laser marking as a prototype presentation pattern such as the name of the parts manufacturer and distributor, the part name, the part number, and the lot number formed on the part sample. This is the part to be done. Alternatively, when exporting as a finished part or prototype to a country other than the main language country, as a pattern of translated characters such as the product name, product number, part name such as sensor part formed on the finished part or part sample, laser It may be a portion where the single color layer 6 is to be exposed by marking. Alternatively, as a pattern for changing or adding characters in the blank pattern portion 3, a portion where the single color layer 6 is to be exposed by laser marking may be used. The expected laser marking portion 4 is preferably formed in a larger size in anticipation of possible patterns such as letters, numbers, symbols and patterns.

The monochromatic layer 6 is a colored layer that covers at least the punched pattern portion 3 and the laser marking planned portion 4. The single color layer 6 is preferably formed in a larger size in anticipation of possible patterns such as letters, numbers, symbols and patterns. As the material of the single color layer 6, there is a resin binder such as an acrylic resin or a vinyl chloride resin containing a transparent coloring material or pigment such as a dye or a transparent pigment, which is translucent or non-translucent. But it's okay. As a method for forming the single color layer 6, there are usual printing methods such as gravure printing and screen printing.

The adhesive layer 7 adheres or forms each of the above layers to the surface of the plastic molded product 9. Adhesive layer 7
For this, a heat-sensitive or pressure-sensitive resin suitable for the material of the plastic molded product 9 is appropriately used. For example, when the material of the plastic molded product 9 is polyacrylic resin, polyacrylic resin may be used. When the material of the plastic molded product 9 is a polyphenylene oxide / polystyrene resin, a polycarbonate resin, a styrene copolymer resin, or a polystyrene blend resin, a polyacrylic resin or polystyrene resin having an affinity for these resins. Polyamide resin, vinyl chloride resin, etc. may be used. If the material to be transferred is polypropylene resin, polypropylene chloride resin, ethylene vinyl acetate resin, chlorinated polyolefin resin, chlorinated ethylene-vinyl acetate copolymer resin, cyclized rubber, coumarone indene resin is used. It is possible. As a method for forming the adhesive layer 7, there are a coating method such as a gravure coating method, a roll coating method and a comma coating method, and a printing method such as a gravure coating method, a gravure printing method and a screen printing method.

Transfer foil 8 for laser marking of the present invention
The concealing layer 5 has a laser marking second scheduled portion 40 at a position different from the laser marking scheduled portion 4, and has a different color from the single color layer 6 so as to cover the laser marking second scheduled portion 40. A different color layer for laser marking may be formed. Further, a laser marking third scheduled portion is provided at a position different from the laser marking scheduled portion 4 and the laser marking second scheduled portion 40, and the single color layer 6 and the laser marking are provided so as to cover the laser marking third scheduled portion. A second different color layer for laser marking having a different color from the different color layer 41 may be formed (not shown).

When the laser marking second planned portion 40 is formed, when a color different from the color exposed in the blank pattern portion 3 of the concealing layer 5 is desired to be exposed by laser marking, a pattern for a small lot is formed. You can immediately respond to color changes and pattern additions. In addition, it is effective because it is possible to obtain a wide variety of colors for the small lot pattern and to obtain a molded product with a picture that can be displayed in a sharp manner.

Transfer foil 8 for laser marking of the present invention
The concealing layer 5 has the second blank pattern portion 30,
A different color layer 31 for a blank pattern having a color different from that of the single color layer 6 may be formed so as to cover the blank pattern portion.

With the second punched pattern portion 30,
When you want to expose a color different from the color exposed in the blank pattern part 3 of the concealment layer 5 as a pattern without laser marking, you can make a large variety of colors in the pattern for large lots or display with a sharp contrast. This is effective because a molded product with a picture can be obtained.

Transfer foil 8 for laser marking of the present invention
The laser marking different color layer and the punching pattern different color layer 31 may be formed in the same color. In this case, the punching pattern coloring layer and the punching pattern different color layer 31
Either the color of the pattern for the small lot is used as the color of the pattern for the small lot, or the color of the colored layer for the blank pattern and the different color layer 31 for the blank pattern is changed to the color of the large lot pattern or the color of the additional pattern. It is effective because it can be applied to any of the above, and a molded product with a picture can be obtained.

Transfer foil 8 for laser marking of the present invention
Is transparent between the hiding layer 5 and the single color layer 6 or between the hiding layer 5 and the laser marking different color layer 41 for protecting the single color layer 6 or the laser marking different color layer 41 from an impact due to laser marking. A resin layer or a vapor deposition layer may be formed.

As the material of the transparent resin layer, it is preferable to use a resin such as an acrylic resin, a two-component curable urethane resin, a polyester resin or a vinyl resin, and if necessary, a semi-transparent white color such as titanium oxide or calcium carbonate. You may As a method for forming the transparent resin layer, there are a usual printing method such as gravure printing and screen printing, and a coating method such as a roll coating method. Aluminum, chromium, copper or the like is used as the material of the vapor deposition layer. The vapor deposition layer is formed by a conventionally known vacuum vapor deposition method, sputtering method, ion plating method, or the like.

Next, a method of manufacturing a molded article with a pattern using the transfer foil 8 for laser marking of the present invention will be described. As a method of manufacturing a molded article with a pattern, there are a case where a transfer method is applied and a case where a molding simultaneous transfer method is applied.

A method of manufacturing a molded article with a pattern to which the transfer method is applied will be described.

First, the adhesive layer 7 of the laser marking transfer foil 8 is brought into close contact with the surface of the plastic molded product 9.

The plastic molded product 9 is made of a thermoplastic resin. Examples of the thermoplastic resin include acrylic resin, acrylic butyl styrene resin, styrene resin,
Examples thereof include polycarbonate resin, polypropylene resin, polystyrene resin, acrylic styrene resin, and elastomer. The shape of the plastic molded product 9 includes, for example, a shape having a surface such as a concave curved surface that cannot be printed by a printing method, a shape having a polyhedral shape, and a shape having a printable flat surface. .

Next, after heating and pressing from the base sheet 1 side, the base sheet 1 is peeled off to obtain a transfer molded product before laser marking in which the transfer layer 70 is formed on the surface of the plastic molded product 9. (Figs. 5 and 6)

The heating and pressing may be performed at a temperature of about 200 to 250 ° C. by using a heated heating and pressing roll 19 made of rubber and a silicon pad. By heating and pressing, the resin of the adhesive layer 7 softens and adheres to the surface of the plastic molded product 9.

Next, the laser marking planned portion 4 of the concealing layer 5 is laser marked to expose the single color layer 6 in a pattern (FIGS. 8 and 9).

That is, in the laser marking, the laser beam 17 emitted from the laser marking device 16 is applied to the laser marking planned portion 4 of the concealing layer 5 to form a pattern such as letters, symbols, numbers and patterns with a single stroke.
It is preferable to remove the hiding layer 5. The marking pattern is usually determined based on the data input to the computer.

As the pattern for exposing the single color layer 6, when the prototype is presented, the parts manufacturer / distributor company name, part name, part number, lot number, which are formed in the part sample,
There are patterns for presenting prototypes such as pictures.

When the manufacturer / distributor company name, product name, etc. are not included in the pattern exposed in the cut pattern portion 3, the manufacturer / distributor company name, product name, etc. may be mentioned as the pattern for exposing the single color layer 6. .

The pattern for exposing the single color layer 6 is a finished part when exporting to countries other than the main language countries, or a product formed on part samples when presenting prototypes to countries other than the main language countries. There are patterns of translated characters such as name, product number, and part display name such as sensor part. Alternatively, there is a pattern for changing or adding characters in the blank pattern portion 3.

As the transfer foil 8 for laser marking, the concealing layer 5 has a laser marking second scheduled portion 40 at a position different from the laser marking scheduled portion 4, and covers the laser marking second scheduled portion 40. Single color layer 6
When a layer having a different color layer 41 for laser marking of a color different from that used is used, the hiding layer 5 may be used if necessary.
Laser marking the second planned portion 40 of the laser marking, and the different color layer 4 for laser marking in a pattern
1 is exposed (FIGS. 8 and 9). The pattern for exposing the different color layer 41 for laser marking is the same as the pattern for exposing the single color layer 6.

A method for producing a molded article with a pattern, which applies the simultaneous molding transfer method, will be described.

First, the transfer foil 8 for laser marking is used.
Is sandwiched in an injection molding die 11, the cavity is injection-filled with resin, and a plastic molded article 9 is obtained by cooling, and at the same time a transfer foil is adhered to the surface thereof, and then the base sheet 1 is peeled off, Transfer layer 70 on the surface of plastic molded product 9
An in-mold molded product before laser marking, in which is formed, is obtained.

That is, the transfer foil 8 for laser marking is placed so that the base sheet 1 side is in contact with the injection molding die 11.
Cavity 1 by placing the transfer foil and closing the mold
2 is formed. As the shape of this cavity 12,
There are cassette lids for AV equipment, front panels and buttons, camera frame parts, personal computer key tops, automobile instrument panel parts, etc. When the molding resin 13 injected and filled from the injection port 120 comes into contact with the adhesive layer 7 of the transfer foil, the adhesive resin of the adhesive layer 7 is softened and adheres to the surface of the plastic molded product 9.

Examples of the injection-filled molding resin 13 include acrylic resin, acryl butyl styrene resin, styrene resin, polycarbonate resin, polypropylene resin, polystyrene resin, acryl styrene resin, and elastomer resin.

Next, the intended laser marking portion 4 of the concealing layer 5 of the in-mold molded product is laser-marked to expose the single color layer 6 in a pattern. The method of laser marking, the exposed pattern, and the like are the same as in the case of the method of manufacturing a molded article with a pattern to which the transfer method is applied.

[0059]

【Example】

Example 1 A release layer made of a polyacrylic resin was formed on a base sheet made of a polyethylene terephthalate film,
Gravure printing using a black ink containing carbon black in a resin binder made of polyester resin, two types of patterns, the product name "UV-W COMPO" and the Japanese product manufacturer and distributor company name logo "XYZ" The second part of the laser marking for the part that has a blank pattern part, and the part to be manufactured and sold by the company name "Company A", and the pattern to be added before and after the product manufacturer and company name logo "XYZ". The hiding layer was formed in such a size as to have a part. A transparent resin layer made of an acrylic resin was formed on the hiding layer by gravure printing. On the transparent resin layer, gravure printing was carried out using an ink containing a blue dye in a resin binder made of acrylic resin, and the patterning portion "UV-W COMPO" of the masking layer and the planned laser marking portion "Company A" A single color layer was formed so as to cover In addition, a different color layer is formed by gravure printing using an ink in which a metallic pigment is contained in a resin binder made of acrylic resin so as to cover the logo "XYZ" of the company name of the product manufacturer and distributor and the second planned portion of laser marking. Formed. An adhesive layer made of polyester resin was formed by gravure printing on these hiding layer, transparent resin layer, single color layer and different color layer to obtain a transfer foil for laser marking.

The side of such a transfer foil opposite to the base sheet was brought into close contact with the surface of a translucent plastic molded product in the shape of a cassette lid, which is a component of AV equipment. Next, the base sheet was heated and pressed from the side of the base sheet with a rubber roll heated to 220 ° C., and the base sheet was peeled off to obtain a transfer molded product in which the transfer layer of the transfer foil was formed on the translucent plastic molded product. At this stage, the metallic pigment color is exposed in the pattern of “XYZ” and the blue color is exposed in the pattern of “UV-W COMPO”, but the pattern of “Company A” is still under the concealing layer. I'm hiding.

Next, the masking layer at the laser marking planned portion is laser-marked to expose the pattern of "Company A" in blue, and a prototype is manufactured by XYZ Company, which is a manufacturer and distributor of "UV-W COMPO" products. presentation. With the above configuration, when the prototype presentation is over and it is decided to mass-produce,
Mass production of transfer molded products without laser marking,
It can be delivered to XYZ as a completed AV device.

If the XYZ company requests that the manufacturer / distributor company name be changed to "XYZ-CHINA" because it wants to export the product to China at a later date, only the export lot of the mass-produced product is It is also possible to form a "-CHINA" pattern by laser-marking the second scheduled portion of laser marking and place it in XYZ Company as a completed part.

[0063]

In the basic embodiment of the transfer foil according to the present invention, the concealing layer having the cut pattern portion and the laser marking planned portion is formed, and the single color layer is formed so as to cover the cut pattern portion and the laser marking planned portion. It is a thing. Further, the basic aspect of the method for producing a molded article with a pattern according to the present invention, using the transfer foil, obtain a transfer molded article or an in-mold molded article, laser-mark the transfer molded article or the in-mold molded article, A molded product with a pattern in which a single color layer is exposed in a pattern for a small lot or a pattern for a large lot. The operation of the present invention will be described by taking the pattern-formed molded product shown in FIG. 5 as an example and assuming that the single color layer is bluish white.

That is, the pattern-formed molded product shown in FIG. 5 is a transfer molded product or an in-mold molded product manufactured by using the transfer foil of the present invention, and is a pattern-molded molded product before laser marking. In this molded product with a pattern, a large lot pattern is formed in a bluish white color by the cut pattern portion of the concealing layer. On the other hand, under the concealment layer corresponding to the laser marking planned portion, a bluish white monochromatic layer having a size corresponding to the change pattern or the additional pattern of the small lot pattern or the large lot pattern is hidden (see FIG. 5). ).

Therefore, when a small lot is produced,
Prepare a transfer foil with a single color layer that covers the laser marking planned part of the transfer foil in advance in a size that covers the prototype presentation pattern such as the name of the parts manufacturer and distributor and the translation word pattern, that is, the small lot pattern. . Then, a transfer molded product or an in-mold molded product is obtained, and the bluish white single color layer hidden under the concealing layer, which is the laser marking planned part, is exposed by laser marking, and a trial product name, such as the manufacturer of the parts manufacturer, is displayed. A work presentation pattern or a translation word pattern, that is, a small lot pattern is formed. That is, the color of the large lot pattern is used as the color of the small lot pattern.

When a small lot production is completed and a molded product with a pattern only for a large lot without a small lot pattern is produced, a molded product with a pattern in which the pattern for a small lot is not exposed without laser marking is completed. Mass production as parts.

When there is a possibility that the large lot pattern needs to be changed or added, a single color layer covering the laser marking planned portion of the transfer foil is covered in advance with the large lot pattern change pattern or the additional pattern. Prepare a transfer foil having a size. Then, a transfer molded product or an in-mold molded product is obtained, and a bluish white single color layer hidden under the concealing layer to be a laser marking planned portion is exposed by laser marking, and a large lot pattern colored layer change pattern Alternatively, an additional pattern is formed. That is, the color of the large-lot pattern in the portion hidden by the hiding layer is used as the changed or added large-lot pattern color.

That is, the method for producing a transfer foil and a molded product with a pattern according to the present invention is a molded product with a transfer foil having an originally exposed single color layer and a single color layer hidden by a masking layer. After that, the single color layer hidden by the hiding layer is appropriately exposed by laser marking, and the color of the large lot pattern is diverted to the color of the small lot pattern or another large lot pattern. There is. For this reason,
Despite using one transfer foil in which a pattern for large lots and a pattern for small lots are formed on the same printing plate, sometimes there is only a large lot pattern product, and sometimes there is a large lot pattern and a small lot pattern. It is possible to obtain a molded article with a pattern that can immediately cope with any of the mixed pattern product of No. 1 and the product having the change pattern of the large lot pattern.

[0069]

Since the present invention has the above-mentioned structure and operation, the following effects can be obtained.

The method for producing a transfer foil and a molded article with a pattern according to the present invention allows a pattern for a small lot to be produced by simply laser-marking the release layer and the concealment layer even when a prototype is presented or when producing for a small market country. It is possible to obtain a molded article with a pattern having a pattern for a large lot. Therefore, it is not necessary to purposely prepare a transfer foil only for forming the small lot pattern coloring layer, and the color of the large lot pattern coloring layer may be diverted to form the small lot pattern. It is simple and does not require a printing plate for forming a pattern coloring layer for small lots, which is economical for producing a transfer foil.

Further, when the prototype is presented or the production for the small market country is finished and the production is switched to the large lot production and the pattern for the small lot is no longer needed, the trial product is presented or the production for the small market country is produced. It is sufficient to divert the transfer foil used for the above, leaving the release layer and the hiding layer without laser marking, and it is not necessary to prepare the transfer foil for forming the pattern coloring layer for small lots. The foil is not wasted, and it is neither labor nor cost.

When it is necessary to change the pattern of a large lot pattern or to add a pattern, the transfer foil used when presenting the prototype or when producing for the small market is used as it is and changed by laser marking. Since it is only necessary to add the transfer foil, it is not necessary to prepare the transfer foil on which the change pattern of the pattern coloring layer for the large lot is formed, so the transfer foil is not wasted,
No effort or cost. Therefore, it is possible to immediately respond to a change or addition of a large lot pattern.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a transfer foil according to the present invention.

FIG. 2 is a sectional view showing another embodiment of the transfer foil according to the present invention.

FIG. 3 is a sectional view showing another embodiment of the transfer foil according to the present invention.

FIG. 4 is a sectional view showing another embodiment of the transfer foil according to the present invention.

FIG. 5 is a cross-sectional view showing a transfer molded product or in-mold molded product before laser marking by the method for manufacturing a molded product with a pattern according to the present invention.

FIG. 6 is a perspective view showing a transfer molded product or an in-mold molded product before laser marking by the method for manufacturing a molded product with a pattern according to the present invention.

FIG. 7 is a cross-sectional view showing a step of laser marking according to the method for producing a molded article with a pattern according to the present invention.

FIG. 8 is a cross-sectional view showing a laser-marked transfer molded product or in-mold molded product obtained by the method for producing a molded product with a pattern according to the present invention.

FIG. 9 is a perspective view showing a laser-marked transfer molded product or in-mold molded product obtained by the method for producing a patterned molded product according to the present invention.

FIG. 10 is a cross-sectional view showing one step of a transfer method as an example of a method for producing a molded article with a pattern according to the present invention, showing that the base sheet is peeled off.

FIG. 11 is a cross-sectional view showing a step in a molding simultaneous transfer method as an example of the method for producing a molded article with a pattern according to the present invention.

FIG. 12 is a cross-sectional view showing a step in a molding simultaneous transfer method as an example of the method for producing a molded article with a pattern according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base sheet 2 Peeling layer 3 Die pattern part 30 2nd die pattern part 31 Different color layer for die pattern 4 Laser marking scheduled part 40 Laser marking 2nd scheduled part 41 Laser marking different color layer 5 Concealment layer 6 Single color layer 7 Adhesive layer 70 Transfer Layer 8 Transfer Foil for Laser Marking 9 Plastic Molded Product 11 Injection Mold 12 Cavity 120 Injection Port 13 Molded Resin 15 Window 16 Laser Marking Device 17 Laser Beam 18 Laser Marking Trace 19 Heat Press Roll

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuneyuki Yamanaka 3 Mibu Hanaicho, Nakagyo-ku, Kyoto City, Kyoto Prefecture Nihon Photo Printing Co., Ltd.

Claims (7)

[Claims] 1. A peeling layer, a concealing layer having a cut pattern portion and a planned laser marking portion, a single color layer at least covering the cut pattern portion and the planned laser marking portion, and an adhesive layer are sequentially laminated on a base sheet. A transfer foil for laser marking, which has a transferred layer. 2. The concealing layer has a laser marking second planned portion at a position different from the laser marking planned portion,
The transfer foil for laser marking according to claim 1, wherein a different color layer for laser marking having a color different from the single color layer is formed so as to cover the second scheduled portion of laser marking. 3. The concealing layer has a second blank pattern portion,
The different color layer for a blank pattern having a color different from the single color layer is formed so as to cover the second blank pattern portion.
Alternatively, the transfer foil for laser marking according to claim 2. 4. The adhesive layer of the transfer foil for laser marking according to claim 1 is brought into close contact with the surface of a plastic molded article, heated and pressed, and then the base sheet is peeled off to form the plastic molded article. A molded product with a pattern characterized by obtaining a transfer molded product with a transfer layer formed on the surface of the product before laser marking, and laser marking the laser marking planned part of the concealing layer to expose a single color layer in a pattern. Manufacturing method. 5. A plastic molding is obtained by sandwiching the transfer foil for laser marking according to any one of claims 1 to 3 in an injection molding die, injection-filling the cavity with a molding resin, and cooling. At the same time, after the transfer foil is adhered to the surface, the base sheet is peeled off to obtain an in-mold molded product before laser marking in which the transfer layer is formed on the surface of the plastic molded product, and the laser marking planned portion of the concealment layer. Is laser-marked to expose a single color layer in a pattern, and a method for producing a molded article with a pattern. 6. An adhesive layer of the transfer foil for laser marking according to any one of claims 1 to 3 is brought into close contact with the surface of a plastic molded article, heated and pressed, and then the base sheet is peeled off to form a plastic molded article. A method for producing a molded article with a pattern, which comprises obtaining a transfer molded article before laser marking in which a transfer layer is formed on the surface of the article. 7. A plastic molding is obtained by sandwiching the transfer foil for laser marking according to any one of claims 1 to 3 in an injection molding die, injection-filling the cavity with a molding resin, and cooling. At the same time, after the transfer foil is adhered to the surface, the base sheet is peeled off to obtain an in-mold molded product before laser marking in which the transfer layer is formed on the surface of the plastic molded product. Method of manufacturing goods.