JP3295534B2 - Transfer foil for laser marking and method for producing molded article with pattern using this transfer foil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art On the surface of components such as cassette lids, front panels, buttons, and camera frame parts of commercially available AV equipment, for example, the name of the manufacturer (including the name of the set manufacturer) of the finished product and the name of the distributor , Product name, product number,
Basic patterns such as a site display name such as a sensor unit 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 surfaces of components such as key tops of personal computers and instrument panel components of automobiles. By the way, most of the markets for AV equipment, cameras, personal computers, and instrument panels of automobiles are in Japan and English-speaking countries. Therefore, the characters used for the basic pattern are characters 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.

[0003] On the other hand, in a component sample presented by a component maker to a set maker, in addition to the basic pattern, the name of the component manufacturer / seller, the component name, the component number, the lot number, etc. are used as a prototype presentation pattern. Has formed.
Since the prototype is presented only from the start to the end of the evaluation of the prototype, the prototype presentation pattern is formed in a small lot production part sample as compared with the finished part.

[0004] In addition, finished lots to be exported to countries other than the main language countries or parts samples to be presented as prototypes to countries other than the main language countries include large lot patterns such as product names, product numbers, and part display names. Are translated into the language of the export destination country and are written as a non-major country translation word pattern directly above or below the large lot pattern. The markets outside of these major languages are small. Therefore, the production volume of the finished parts to be exported or the production volume of the component samples is very small. Therefore, the translated language pattern of a non-major country is formed in a small production amount, that is, a small lot of finished parts or a part sample, as compared with the production amount for a major country.

Hereinafter, the prototype presentation pattern and the non-principal translation pattern will be collectively referred to as a small lot pattern.

As an example of a component sample, as shown in FIG. 9, a light shielding portion and a window portion are provided, and the name of the manufacturer and the product, the part display name, the mode display name, the name of the component manufacturer and the distributor,
In some cases, a part number or the like is formed by a colored layer.
Therefore, a method of manufacturing a molded article with a picture which can be considered as a method of manufacturing the component sample will be described below.

(1) In addition to the windows on the surface of a light-transmitting plastic molded product, a concealing layer is formed as a light-shielding portion by screen printing using a concealing ink, and manufacturing and sales are performed by screen printing using a coloring ink. Former company name, product name, part display name,
A large lot pattern coloring layer showing the mode display name is formed on the light-shielding part, and a small lot showing the name and part number of the part manufacturing and selling company by screen printing using ink containing an arbitrary white pigment The pattern coloring layer for a large lot is formed on another part of the pattern coloring layer for a large lot on the light shielding portion. Finally,
Dry each colored layer.

[0008] Thus, on the surface of the plastic molded article,
There are the following technologies that do not require direct screen printing many times and are less likely to limit the shape of a molded product. (2) Forming a release layer on the base sheet and printing a concealment layer with the window part, manufacturing / distributing company name, product name, part display name, mode display name, component manufacturing / distributing company name, and part number as the pattern part Formed, printed and formed a large lot pattern coloring layer to cover the punched pattern part showing the manufacturing and selling company name, product name, part display name, mode display name, and expressed the component manufacturing and selling company name and part number Prepare a transfer foil with the pattern coloring layer for small lot printed and formed so as to cover the punched pattern part, and print the adhesive layer on the entire surface, and adhere the adhesive layer of this transfer foil to the surface of the transparent 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 article to perform decoration. Also,
As a method for performing the transfer method more rationally, there is a molding simultaneous transfer method. With the simultaneous molding transfer method, the transfer foil is sandwiched in the injection mold, the molding resin is injected and filled in the cavity,
This is a method in which, after cooling to obtain a resin molded product, a transfer foil is adhered to the surface thereof, the base sheet is peeled off, and the transfer layer is transferred to the surface of the resin molded product to perform decoration.

In the above (1) and (2), the pattern coloring layer for the small lot is formed on a printing plate different from the pattern coloring layer for the large lot. The reason is that if the same printing plate is formed, the small lot production is terminated and switched to the large lot production, and the small lot pattern coloring layer becomes unnecessary. It is necessary to prepare a new screen printing plate having only the pattern coloring layer for the large lot without the coloring layer. In (2), the transfer foil having only the pattern coloring layer for the large lot without the pattern coloring layer for the small lot is required. This is because it must be newly prepared.

[0010]

However, the above prior art has the following problems.

The first problem is that the production efficiency is poor in that the screen of the translucent plastic molded product must be directly subjected to screen printing at least twice and a drying step is required. In addition, since screen printing cannot be performed on a three-dimensional curved surface with rising edges, the shape of a molded article with a picture is limited.

(1) In the case where the small lot production is completed and the production is switched to the large lot production and the pattern for the small lot becomes unnecessary, the screen printing plate for forming the pattern coloring layer for the small lot is discarded. You have to do it, so the economy is bad.

In the case (1), when a pattern for a large lot needs to be changed or added, a screen printing plate for forming the changed or added pattern must be newly prepared. It is troublesome and expensive, and it is not possible to respond immediately to adding or replenishing patterns.

In (2), when the production of the small lot is completed and the production is switched to the production of the large lot and the pattern for the small lot becomes unnecessary, the printing plate for forming the concealment layer and the pattern coloring layer for the small lot are formed. And a printing plate for forming a masking layer for forming only a pattern for a large lot must be prepared and printed, and a completely different transfer foil must be prepared. For this reason, a printing plate and a transfer foil only for forming a pattern coloring layer for a small lot must be prepared, and thus wastefulness is high and economic efficiency is poor.

[0015] (2) is a case where the pattern of the large lot pattern needs to be changed or added.
Discarding the printing plate for forming the concealment layer and the printing plate for forming the pattern coloring layer for large lots, and removing the pattern part in response to changes and additions of the manufacturer / sales company name, product name, part display name, etc. A printing plate for forming a concealment layer having a, and a printing plate for forming a pattern coloring layer for a large lot with changes and additions newly prepared and printed.
A completely different transfer foil must be prepared. For this reason,
Each time a pattern is changed or added, a printing plate and a transfer foil must be prepared, which is time-consuming, time-consuming, and expensive, and is economically inefficient. Can not.

Therefore, the present invention solves the above-mentioned problems, and is economical even if a pattern for a small lot becomes unnecessary. 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 comprises, on a base sheet, a release layer, a concealing layer having a punched pattern portion and a portion to be laser-marked, A single color layer covering at least the punched pattern portion and the portion to be laser-marked, and a transfer layer in which each layer of an adhesive layer is sequentially laminated.

Further, in the transfer foil for laser marking, the concealing layer has a second scheduled portion for laser marking at a position different from the scheduled portion for laser marking, and the single color so as to cover the second scheduled portion for laser marking. It is good also as a structure in which the different color layer for laser marking of a different color from the layer is formed.

Further, in the transfer foil for laser marking, the concealing layer has a second cut pattern portion, and a different color layer for the cut pattern of a color different from the single color layer so as to cover the second cut 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 according to the present invention is characterized in that the adhesive layer of any of the transfer foils for laser marking is brought into close contact with the surface of the plastic molded article and then heated and pressed. Then, the base sheet is peeled off to obtain a transfer molded product before laser marking in which a transfer layer is formed on the surface of the plastic molded product, and the laser marking portion of the concealment layer is laser marked to expose a single color layer in a pattern. The configuration was adopted.

According to the method for producing a molded article with a pattern using the transfer foil for laser marking of the present invention, any one of the transfer foils for laser marking is sandwiched in an injection mold, and the molding resin is injected and filled in the cavity. At the same time as cooling to obtain a plastic molded product, a transfer foil is adhered to the surface of the plastic molded product.Then, the base sheet is peeled off, and an in-mold molded product having a transfer layer formed on the surface of the plastic molded product before laser marking is formed. Then, the laser marking portion of the concealing layer was laser-marked to expose a single color layer in a pattern.

The method for producing a molded article with a pattern using the transfer foil for laser marking according to the present invention is characterized in that the adhesive layer of any of the transfer foils for laser marking is brought into close contact with the surface of the plastic molded article, and then heated and pressed. Then, the base 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.

According to the method of manufacturing a molded article with a pattern using the transfer foil for laser marking of the present invention, any one of the transfer foils for laser marking is sandwiched in an injection mold, and the molding resin is injected and filled in the cavity. At the same time as cooling to obtain a plastic molded product, a transfer foil is adhered to the surface of the plastic molded product.Then, the base sheet is peeled off, and an in-mold molded product having a transfer layer formed on the surface of the plastic molded product before laser marking is formed. The configuration was obtained.

Hereinafter, a transfer foil for laser marking of the present invention and a method of manufacturing a molded article with a picture using the transfer foil will be described with reference to the drawings.

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

The base sheet 1 is peeled and removed after the transfer foil 8 for laser marking is adhered or formed on the plastic molded article 9. As the base sheet 1, a sheet used for a normal transfer foil base sheet, such as a plastic film or paper such as polyethylene terephthalate, polypropylene, polyethylene, nylon, and cellophane, or a composite film thereof is used. Further, in order to further impart releasability to the base sheet 1, a release layer that 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, silicon resin, fluorine resin, cellulose resin, urea resin, polyolefin resin, paraffin resin, and the like.

The release layer 2 is formed entirely or partially on the base sheet 1 or the release layer. The release layer 2 is a layer that is peeled from the base sheet 1 or the release layer and becomes the outermost surface of the transfer object when the base sheet 1 is separated. When the peeling layer 2 causes delamination, the surface that has been delaminated is the outermost surface. When the release layer has undergone interlayer release, the release layer remaining on the surface of the transfer layer 70 is
The outermost surface of the transfer object. 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. It is preferable to use a copolymer such as a system resin or an ethylene-vinyl acetate copolymer system resin. When hardness is required for the release layer 2, a photo-curable 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 a 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 release layer 2 may have a two-layer configuration as 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 μm.
m is preferred.

The concealing layer 5 is a layer for concealing the color existing under the concealing layer 5 after the transfer layer 70 of the transfer foil 8 for laser marking is formed on the plastic molded article 9. As a material of the concealing layer 5, there is a material in which a concealing coloring material such as carbon black is contained in a resin binder such as an acrylic resin or a polyester resin. Examples of a method for forming the concealing layer 5 include a normal printing method such as gravure printing and screen printing, and a coating method such as a roll coating method. The concealing layer 5 basically has only to conceal the color of the base, and any color may be used as long as the concealment is performed. However, it is preferable that the reflectivity is low. Further, it may be plain or have a pattern. Further, a layer having metallic luster may be formed as the concealing layer 5. The layer having a metallic luster can be obtained by forming the layer by a vacuum evaporation method, a sputtering method, an ion plating method, or the like, 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 portion 4. The concealing layer 5 does not need to be formed on the entire surface of the release layer 2 as long as it forms at least the punched pattern portion 3 and has the laser marking scheduled portion 4.

The blank pattern portion 3 is provided with a single color layer 6 described later.
Is a through-hole for exposing the. With these through holes, it is expressed as a pattern formed on the surface of components such as cassette lids, front panels and buttons of AV equipment, frame parts of cameras, and finished parts such as key tops of personal computers and instrument panel parts of automobiles. Have been. Specifically, the name of the manufacturer (including the name of the set manufacturer), the name of the distributor, the product name, the product number, the display names of the parts such as the sensor unit, the mode display names such as ON / OFF display, Japanese characters, alphabets, There are patterns such as numbers, symbols, and patterns.

The laser marking portion 4 is a portion where the concealing layer 5 is removed by laser marking after the transfer. Removed portion, ie laser marking mark 18
Then, the single-color layer 6 hidden under the shielding layer 5 is exposed.

When the prototype is presented, the scheduled laser marking section 4 is exposed by laser marking as a prototype presentation pattern, such as the name of a component manufacturer and seller, a component name, a component number, and a lot number, formed on a component sample. This is the part that we plan to do. Alternatively, when exporting as a finished part or prototype to a country other than the main language country, the laser is used as a pattern of translated characters such as product name, product number, sensor part name etc. formed on the finished part or part sample. The portion where the single color layer 6 is to be exposed by the marking may be used. Alternatively, a portion where the single color layer 6 is to be exposed by laser marking may be used as a pattern to be changed or added to the characters of the blank pattern portion 3. The scheduled laser marking portion 4 is preferably formed large in anticipation of possible patterns such as letters, numbers, symbols, and patterns.

The single-color layer 6 is a colored layer that covers at least the blank pattern portion 3 and the laser marking portion 4. The single color layer 6 may be formed large in anticipation of possible patterns such as letters, numbers, symbols, and patterns. The material of the single color layer 6 includes a resin binder such as an acrylic resin or a vinyl chloride resin containing a transparent coloring material or a pigment such as a dye or a transparent pigment. May be. As a method for forming the single color layer 6, there is a usual printing method such as gravure printing, screen printing, or the like.

The adhesive layer 7 adheres or forms each of the above layers on the surface of the plastic molded article 9. Adhesive layer 7
As the material, a heat-sensitive or pressure-sensitive resin suitable for the material of the plastic molded article 9 is appropriately used. For example, when the material of the plastic molded article 9 is a polyacrylic resin, it is preferable to use a polyacrylic resin. When the material of the plastic molded article 9 is a polyphenylene oxide / polystyrene resin, a polycarbonate resin, a styrene copolymer resin, or a polystyrene blend resin, a polyacryl resin, a polystyrene resin having an affinity for these resins. , A polyamide resin, a vinyl chloride resin, or the like may be used. Furthermore, when the material of the transfer object is a polypropylene resin, a chlorinated polypropylene resin, an ethylene vinyl acetate resin, a chlorinated polyolefin resin, a chlorinated ethylene-vinyl acetate copolymer resin, a cyclized rubber, and a coumarone indene resin are used. It is possible. Examples of the method for forming the adhesive layer 7 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, a gravure printing method, and a screen printing method.

The 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 for covering the laser marking third scheduled portion are covered. A second different color layer for laser marking of a different color from the different color layer 41 may be formed (not shown).

When the laser marking second predetermined portion 40 is formed, when it is desired to expose a color different from the color exposed on the blanking pattern portion 3 of the concealing layer 5 by using a small lot pattern, Can immediately respond to color changes and pattern additions. In addition, it is effective because a variety of small lot patterns can be provided in a variety of colors, and a molded product with a picture that can display sharply can be obtained.

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

With the second punch pattern portion 30,
When it is desired to expose a color different from the color exposed on the blanking pattern portion 3 of the concealing layer 5 as a pattern without laser marking, it is possible to enrich the color variety of a large lot pattern or display a sharp display. This is effective because a molded product with a design that can be obtained can be obtained.

Transfer foil 8 for laser marking of the present invention
In the above, the laser marking different color layer and the punch pattern different color layer 31 may be formed in the same color. In this case, the colored layer for the cut pattern and the different color layer 31 for the cut pattern
Is adopted as the color of the pattern for the small lot, or the color of the colored layer for the removed pattern and the different color layer 31 for the removed pattern is changed to the pattern of the large lot, and the color of the additional pattern is changed. This is effective because it is possible to obtain a molded article with a pattern that can be selected.

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

As the material of the transparent resin layer, a resin such as an acrylic resin, a two-component curable urethane resin, a polyester resin, or a vinyl resin may be used. If necessary, a translucent white color such as titanium oxide or charcoal may be used. It may be. Examples of the method for forming the transparent resin layer include 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 deposition layer. The deposition layer is formed by a conventionally known vacuum deposition method, sputtering method, ion plating method, or the like.

Next, a method for manufacturing a molded article with a picture 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 picture, there are a case where a transfer method is applied and a case where a simultaneous molding transfer method is applied.

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

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

The molded plastic article 9 is made of a thermoplastic resin. Examples of thermoplastic resin include acrylic resin, acrylic butyl styrene resin, styrene resin,
Examples include polycarbonate resin, polypropylene resin, polystyrene resin, acrylic styrene resin, and elastomer. The shape of the plastic molded article 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, a shape having a printable flat surface, and the like. .

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

The heating and pressurizing may be performed at a temperature of about 200 to 250 ° C. by using a heated rubber pressurizing roll 19 or a silicon pad. By applying heat and pressure, the resin of the adhesive layer 7 is softened and adheres to the surface of the plastic molded article 9.

Next, the laser marking 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, the laser marking is performed by irradiating a laser beam 17 radiated from a laser marking device 16 to a laser marking portion 4 of the concealing layer 5 to form a pattern such as letters, symbols, numbers, and patterns in one stroke.
It is preferable to remove the hiding layer 5. The marking pattern is usually determined based on data input to a computer.

As a pattern for exposing the single color layer 6, when a prototype is presented, the name of the component manufacturer / sales company, the component name, the component number, the lot number,
There are patterns for presenting prototypes such as pictures.

When the name of the manufacturer or product or the like is not included in the pattern exposed in the blanking pattern portion 3, the name of the manufacturer or product or the like may be used 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 a country other than the main language country, or a product formed on a part sample when presenting a prototype to a country other than the main language country. There are translation character patterns such as name, product number, and site 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 second scheduled laser marking portion 40 at a position different from the laser marking scheduled portion 4, and covers the laser marking second scheduled portion 40 so as to cover the laser marking second scheduled portion 40. Single color layer 6
If a layer having a different color layer 41 for laser marking of a color different from that of the opaque layer 5 is used,
Laser marking of the second scheduled portion 40 of the laser marking, the different color layer 4 for laser marking in a pattern shape
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 manufacturing a molded article with a picture to which the simultaneous molding transfer method is applied will be described.

First, the transfer foil for laser marking 8
Is sandwiched in an injection molding die 11, the cavity is filled with resin by injection, and cooled to obtain a plastic molded product 9. At the same time, a transfer foil is adhered to the surface of the molded product 9. Transfer layer 70 on the surface of plastic molded article 9
To obtain an in-mold molded product before laser marking in which is formed.

That is, the transfer foil 8 for laser marking is placed in such a manner that the base sheet 1 is in contact with the injection mold 11.
The transfer foil is placed and the mold is closed.
2 are formed. As the shape of the cavity 12,
There are shapes such as cassette lids, front panels and buttons for AV equipment, frame parts for cameras, key tops for personal computers, and instrument panel parts for automobiles. 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 article 9.

Examples of the molding resin 13 to be filled with injection include acrylic resin, acrylic butyl styrene resin, styrene resin, polycarbonate resin, polypropylene resin, polystyrene resin, acrylic styrene resin, elastomer resin and the like.

Next, the 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 pattern to be exposed, and the like are the same as in the case of the method for manufacturing a molded article with a picture to which the above-mentioned 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 black ink containing carbon black in a resin binder made of polyester resin, and two types of patterns, the product name "UV-W component" and the logo "XYZ" of the company name of the Japanese product manufacturing and selling company Laser marking for the part that has a punching pattern part and is planned to be laser-marked with the company name "Company A", and the second planned laser marking for the pattern to be added before and after the logo "XYZ" of the product manufacturing and marketing company The concealing layer was formed in such a size as to have a portion. A transparent resin layer made of an acrylic resin was formed on the concealing layer by gravure printing. On the transparent resin layer, gravure printing was performed using an ink containing a blue dye in a resin binder made of an acrylic resin, and the concealed layer cut pattern portion “UV-W component” and a laser marking portion “Company A” To form a single-color layer. In addition, by gravure printing using an ink containing a metallic pigment in a resin binder made of an acrylic resin, a different color layer is formed so as to cover the logo "XYZ" of the product manufacturing and selling company name and the second scheduled portion of the laser marking. Formed. An adhesive layer made of a polyester resin was formed on the concealing layer, the transparent resin layer, the single color layer, and the different color layer by gravure printing to obtain a transfer foil for laser marking.

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

Next, the concealing layer in the portion to be laser-marked is laser-marked to expose the pattern of “Company A” to blue, and a prototype is produced by XYZ Company, a manufacturer and seller of “UV-W component” products. presentation. With the above configuration, when the prototype is presented and mass production is to be completed,
Mass production of transfer molded products without laser marking,
It can be delivered to XYZ as a finished part of AV equipment.

Further, since the company wishes to export the product to China at a later date, if a request is received from XYZ Company to change the name of the manufacturing and sales company to “XYZ-CHINA”, only the export lots of the mass-produced products will be Laser marking may be performed on the second scheduled portion of the laser marking to form a “-CHINA” pattern, and the finished part may be delivered to XYZ Company.

[0063]

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

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

Therefore, when producing a small lot,
In advance, prepare a transfer foil in which a single color layer covering the laser marking scheduled portion of the transfer foil is formed in a size to cover the prototype presentation pattern such as the name of the component manufacturing and selling company or 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 blue-white single-color layer hidden under the concealing layer that is to be the laser marking portion is exposed by laser marking, and the component manufacturing and sales company name or the like is tested. A work presentation pattern and a translated word pattern, that is, a small lot pattern are 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 of only a large lot pattern without a small lot pattern is to be produced, a molded product with a pattern without laser marking and exposing the pattern for the small lot is completed. Mass production as parts.

When there is a possibility that a large lot pattern needs to be changed or added, a single color layer covering the laser marking scheduled portion of the transfer foil is covered in advance with the large lot pattern change pattern or additional pattern. A transfer foil formed in a size is prepared. Then, a transfer molded product or an in-mold molded product is obtained, and the blue-white single color layer hidden under the concealing layer to be laser-marked is exposed by laser marking to change the pattern of the large lot pattern coloring layer. Alternatively, an additional pattern is formed. In other words, the color of the large lot pattern hidden by the concealing layer is diverted to the changed and added large lot pattern color.

In other words, the method for producing a transfer foil and a molded article with a pattern according to the present invention is directed to a molded article with a pattern using a transfer foil having a single-color layer originally exposed and a single-color layer hidden by a concealing layer. After obtaining, the single color layer concealed by the concealing layer by laser marking is appropriately exposed, so that the color of the large lot pattern is used for the color of the small lot pattern or another large lot pattern. I have. For this reason,
Despite using a single transfer foil in which a large lot pattern and a small lot pattern are formed on the same printing plate, sometimes a product with only a large lot pattern, sometimes a large lot pattern and a small lot pattern Thus, a molded product with a pattern that can immediately respond to any of the products having the mixed pattern of the above and sometimes having the changed pattern of the large lot pattern can be obtained.

[0069]

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

The method for producing a transfer foil and a molded product with a pattern according to the present invention can be applied to a small lot pattern by simply laser marking the release layer and the concealing layer, even when presenting a prototype or producing for a small market country. Thus, a molded article with a picture having a pattern for a large lot can be obtained. Therefore, it is not necessary to prepare a transfer foil only for forming the pattern coloring layer for the small lot, and it is sufficient to divert the color of the pattern coloring layer for the large lot to form the pattern for the small lot. It is simple and does not require a printing plate for forming a pattern coloring layer for a small lot, and is economical to manufacture a transfer foil.

In the case where the prototype has been presented and the production for the small market countries has been completed and the production is switched to the large lot production and the pattern for the small lots is no longer necessary, when the prototype is presented or the production for the small market countries is carried out, It is only necessary to divert the transfer foil used for the process as it is and leave the release layer and the concealing layer without laser marking, and there is no need to prepare a transfer foil for forming the pattern coloring layer for small lots. Foil is not wasted, hassle-free and costs are low.

When it is necessary to change the pattern of the large lot pattern or to add a pattern, the transfer foil used when presenting the prototype or producing the small market is directly used and changed by laser marking. Since it is only necessary to add the transfer foil, there is no need to separately prepare a transfer foil formed with a changed pattern of the pattern coloring layer for a large lot, so that the transfer foil is not wasted,
No hassle or cost. Therefore, it is possible to immediately respond to a change or addition of a large lot pattern.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one 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 an in-mold molded product before laser marking by the method of manufacturing a molded product with a picture 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 producing a molded product with a picture according to the present invention.

FIG. 7 is a cross-sectional view showing a step of performing laser marking by the method of manufacturing a molded article with a picture according to the present invention.

FIG. 8 is a cross-sectional view showing a laser-marked transfer molded product or an in-mold molded product obtained by the method of manufacturing a molded product with a picture according to the present invention.

FIG. 9 is a perspective view showing a laser-marked transfer molded product or an in-mold molded product obtained by the method of manufacturing a molded product with a picture according to the present invention.

FIG. 10 is a cross-sectional view showing one step of a transfer method as one embodiment of a method of manufacturing a molded article with a picture according to the present invention and showing that a base sheet is being peeled off.

FIG. 11 is a cross-sectional view showing one step of the simultaneous molding and transferring method as one embodiment of the method of manufacturing a molded article with a picture according to the present invention.

FIG. 12 is a cross-sectional view showing one step of a simultaneous molding transfer method as one embodiment of the method of manufacturing a molded article with a picture according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base sheet 2 release layer 3 cut pattern part 30 second cut pattern part 31 different color layer for cut pattern 4 scheduled laser marking part 40 second scheduled laser marking part 41 different color layer for laser marking 5 concealment layer 6 single color layer 7 adhesive layer Reference Signs List 70 Transfer layer 8 Transfer foil for laser marking 9 Plastic molded product 11 Injection molding die 12 Cavity 120 Injection port 13 Molding resin 15 Window 16 Laser marking device 17 Laser beam 18 Laser marking mark 19 Heating and pressing roll

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-19400 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 45/00-45/84 B32B 33 / 00 B44C 1/17

Claims (7)

(57) [Claims] 1. A substrate layer, in which a release layer, a concealing layer having a punched pattern portion and a laser marking portion, a single color layer covering at least the punched pattern portion and the laser marking portion, and an adhesive layer are sequentially laminated. A transfer foil for laser marking characterized by having a transferred layer. 2. The masking layer has a laser marking second scheduled portion at a position different from the laser marking scheduled portion,
The transfer foil for laser marking according to claim 1, wherein a different color layer for laser marking of a color different from the single color layer is formed so as to cover the second scheduled portion of the laser marking. 3. The concealing layer has a second punched pattern portion,
2. A different color layer for a cut pattern having a color different from that of the single color layer is formed so as to cover the second cut pattern portion.
Alternatively, the transfer foil for laser marking according to claim 2. 4. An adhesive layer of the transfer foil for laser marking according to any one of claims 1 to 3, which is adhered to the surface of a plastic molded product, heated and pressurized, and then the base sheet is peeled off. A transfer molded product before laser marking with a transfer layer formed on the product surface, laser marking the laser marking portion of the concealment layer, and exposing a single color layer in a pattern, characterized by the pattern Manufacturing method. 5. The transfer foil for laser marking according to claim 1 is sandwiched in an injection mold, the molding resin is injected and filled in a cavity, and cooled to obtain a plastic molded product. At the same time, after the transfer foil is adhered to the surface, the base sheet is peeled off to obtain the in-mold molded product before the laser marking with the transfer layer formed on the surface of the plastic molded product, and the laser marking scheduled portion of the concealment layer Characterized in that a single color layer is exposed in a pattern by laser marking. 6. An adhesive layer of the transfer foil for laser marking according to any one of claims 1 to 3, which is adhered to the surface of a plastic molded product, heated and pressurized, and then the base sheet is peeled off. A method for producing a molded article with a picture, characterized by obtaining a transfer molded article before laser marking having a transfer layer formed on the product surface. 7. The transfer foil for laser marking according to any one of claims 1 to 3 is sandwiched in an injection molding die, a molding resin is injection-filled in a cavity, and cooled to obtain a plastic molded product. 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 with a transfer layer formed on the surface of the plastic molded product. Product manufacturing method.