JPS63114700A - Delustering transfer material and manufacture of delustering molded form - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a matte transfer material having abrasion resistance and a method for producing a matte molded product using this transfer material. For example, it is used for plastic cards that have designs and require wear resistance, cosmetic compacts, and the like.

<Prior Art> Conventionally, the following methods have been used to provide a matte portion on the surface of an object to be transferred using a transfer material.

After providing a release layer made of thermoplastic resin on a releasable base sheet with fine irregularities, a pattern layer/
After appropriately providing a metal vapor deposition layer, an anchor layer, etc., an adhesive layer is provided to create a transfer material.

Next, it was common to transfer this onto an object and then peel off the base sheet. As a result, the unevenness of the base sheet was used as a mold, and the unevenness was transferred onto the surface of the thermoplastic resin of the release layer, so that the surface of the object to be transferred became matte.

The following methods can be used to provide unevenness on the surface of the base sheet.

(Irregularities are provided by coating the surface of a smooth base sheet with a resin that contains the X1 extender pigment and adheres to the base sheet.)

ty) Providing irregularities on the surface of the base sheet by processing such as sandblasting.

fZ) Body on the base sheet itself! ! The i material is kneaded in so that the surface of the base sheet becomes uneven.

<Problems to be solved by the invention> However, the above method has the following problems.

[In Xl, the unevenness of the base sheet is transferred to the surface of the release layer, so as the material for the release layer III, a material with good thermoformability is selected so that the unevenness can be easily transferred by heat pressure during transfer. It will be done. These are generally thermoplastic resins, and when provided as a matte portion on the surface of an object to be transferred, only those with low abrasion resistance or easily scratched can be formed.

(With yl, the processing of the base sheet must be completed before forming the release layer. Also, after the film is manufactured, unevenness is created on the film through post-processing such as sandblasting, which is very expensive and requires post-processing conditions. Variations in the degree of matting occur due to variations in fX.
It also had the same drawbacks as 1.

In tz+, when manufacturing the film, the body Will be added to the base sheet.
It is easily torn because it contains materials mixed in with it, making it difficult to use under harsh transfer conditions. It also had the same drawbacks as (×).

Means for Solving the Problems> In order to solve the above problems, the present invention was made as follows. That is, the first invention provides an ultraviolet curable resin or an electron beam curable resin that is solid in an uncured state at room temperature, has no adhesive properties, and has shrinkage properties when cured, on a removable base sheet. (a) and 0.001 to 250μ
A matting layer is formed by mixing a matting material [bl] made of an inorganic or organic material having a particle size of m, and an adhesive layer is formed thereon.

Further, the second invention provides, on a base sheet having removability,
An ultraviolet curable resin or an electron beam curable resin fat that is solid and non-adhesive at room temperature and uncured and has shrinkage properties when cured, and an inorganic or organic resin having a particle size of 0.001 to 250 μm. Matte material made of substance (bl
A matte layer is formed by mixing the matte layer with the adhesive layer, and after transferring the transfer material on which the adhesive layer is formed onto the transferred object, the matte layer's UV-curable resin or When the electron beam curable resin is cured, the surface of the matte layer is changed by the crosslinking shrinkage of the ultraviolet ray curable resin or electron beam curable resin + a) that occurs at this time, and the matte material (bl) present on the surface of the transfer target. I tried to make it uneven.

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

FIG. 1 shows a cross section of this transfer material. 1 is a base sheet, 2 is a matte layer, 3 is a pattern layer, 4 is a metal vapor deposition layer, 5 is an anchor layer, and 6 is an adhesive layer.

A matte layer 2 is formed on a base sheet 1.

As the base sheet 1 having peelability, a plastic film such as a polyethylene terephthalate film, a polypropylene film, or cellophane, or a composite film made by laminating a polypropylene film and paper, etc. can be used. These surfaces are smooth. In addition, as will be described later, if you want to make a difference in the degree of matteness of the matte portion on the surface of the transferred object, it is also possible to use a film manufactured by the above-mentioned method fXl, fyl, (Z). be.

Matte N2 is made of an ultraviolet curable resin or an electron beam curable resin (a) that is solid at room temperature and uncured, does not have adhesiveness, and has shrinkage properties when cured, and 0.
A material mixed with a matting material (b) made of an inorganic or organic substance having a particle size of 0.001 to 250 μm is used.

UV-curable resins include polyester acrylate, polyester urethane acrylate, epoxy acrylate, polyol acrylate, etc., and photoinitiators such as acetophenone, benzoin ether, benzyl ketal, and ketone initiators, hydroxyethyl acrylate, diethylene glycol, etc. A compound containing a reactive diluent made of mono-, di-, or trivinyl compounds such as dimethacrylate is used.

Further, as the electron beam curable resin, a mixture of polyester acrylate, polyester urethane acrylate, epoxy acrylate, polyol acrylate, etc., with a photopolymerizable septamer such as pentaerythritol acrylate or trimethylolpropane triacrylate is used.

In addition, for the ultraviolet curable resin or electron beam curable resin (al) used here, if you want to increase the degree of matteness, use one that has a high shrinkage rate during curing, and if you want to decrease the degree of matteness, cure It is best to choose one with a low shrinkage rate.

As the matting material (b), extender pigments such as silica and calcium carbonate, glass beads, pearl pigments, acrylic beads, etc. are used.

In addition, the amount of the matting material tb+ to be mixed may be adjusted depending on the degree of matting, and any ratio may be used as long as the adhesion between the ultraviolet curable resin or electron beam curable resin +a+ and the matting material (b) does not deteriorate. Can be mixed. These are dispersed using machines commonly used in ink manufacturing, such as paint shakers and three-roll propeller agitators. At this time, matte Murayama) is used as ultraviolet curable resin or electron beam curable resin (a
Preferably, it is uniformly dispersed in the liquid.

This matte layer 2 may be partially provided on the entire surface of the base sheet 1 or in synchronization with a pattern layer, metal vapor deposition layer, etc. formed on this layer.

Furthermore, the matte layer 2 may be colored with a pigment, dye, or the like.

Next, a pattern layer 3 is provided as needed.For the pattern layer 3, colored ink that is normally used for transfer materials may be used, and for those that require more resistance and hardness, ultraviolet curable resin may be used. Alternatively, a colored ink based on an electron beam curable resin may be used.

Further, a metal vapor deposition layer 4 is provided as necessary. This metal vapor deposition N4 may be formed over the entire surface or partially. The thin metal @N4 is formed using a metal such as aluminum, chromium, or nickel by a method such as a vapor deposition method, a sputtering method, or an ion blasting method.

The method of partially providing the metal vapor deposited layer 4 is to form the water soluble resin layer in the areas where the metal pattern is not required, form the metal vapor deposit layer 4 on the entire surface, and then wash it with water to form the water soluble resin layer together with the water soluble resin layer. There is a method of removing the metal vapor deposited layer 4 in parts where the metal pattern is unnecessary.

Further, when providing the metal vapor deposition layer 4, an anchor layer may be provided between the upper and lower glabella to improve the adhesion between the two.

Furthermore, an adhesive layer 5 suitable for the object to be transferred is provided thereon.

The adhesive layer 5 is made of a material that can be thermally fused to the object to be transferred, and is generally made of acrylic resin, vinyl chloride resin, chlorinated rubber resin, or the like.

Effect> When this transfer material is used to transfer onto a transfer target and the base sheet I is removed, the transfer target is irradiated with ultraviolet rays or electron beams, and the ultraviolet curable resin of the matte layer 2 or the electron beam cures. Crosslinking shrinkage of the resin (a) occurs, and due to the matte material (b) present in the matte layer 2, the surface of the matte layer 2 becomes uneven and two matte areas are formed on the surface of the transferred object (Fig. 2). ), therefore, even if the surface of the base sheet 1 is smooth, it can be rendered matte.

This is UV curable resin or electron beam curable resin + a
This is a new method for expressing matte areas that focuses on the fact that l exhibits large crosslinking shrinkage, and is completely different from the conventional method in which the unevenness of the base sheet is transferred to the release layer of the transfer material.

<Example> A base sheet is a polyethylene terephthalate film with a smooth surface that has been subjected to mold release treatment using a silicone resin, and a matte layer having the following composition 1 is partially applied by gravure printing on the base sheet. A transparent layer of polyester acrylate, which is an ultraviolet curable resin, is applied over the entire surface using gravure printing, which dries to a non-tacky state.Furthermore, in the same process, black ink is applied as a pattern layer over the entire surface of the film. and then methyl methacrylate was printed as an adhesive layer.

The printed portion of the matte layer and the unprinted portion of the matte layer of the transfer material were transferred to an ABS resin molded product.

The surface of the molded product after the transfer was smooth and glossy. After that, when 80H/- ultraviolet rays are irradiated for 2 seconds, the printed part of the matte layer of the transfer material becomes a matte part with a wet color, and the unprinted part of the matte layer of the transfer material has a surface gloss. I got something. All of these surfaces were abrasive and could not be scratched by scratching with a fingernail.

Composition 1 (wt%) UV curable resin: Polyester acrylate A48 Penzyl Methyl Kecool (manufactured by Ciba Geigy 1rgacu)
re651) 2 Matte material:
Calcium carbonate 3゜Solvent: Toluene 20 years of work and 1 loss A polyethylene terephthalate film with a smooth surface was used as a base sheet, and a matte layer made of the following composition 2 was printed on the base sheet by gravure printing to a size of IX4 (em). In the same process, letters were printed as another pattern layer on the areas other than the matte layer, and then vinyl chloride resin was printed as an adhesive layer.

The above transfer material was transferred onto a card made of vinyl chloride resin so that the printed portion of the matte layer was located at the lower right corner.

The surface of the molded product after the transfer was smooth and glossy. After that, when 80 W/cd ultraviolet rays were irradiated for 2 seconds, the portion of the transfer material where the matte layer was provided lost its luster. It was possible to write on it with a pencil or ballpoint pen. What was written with a pencil could be erased with an eraser, and the erased marks were free of scratches and dents. In addition, all of these surfaces were abrasive and could be scratched with a fingernail (even if scratched).

Composition 2 (wt%) Ultraviolet curable resin: Polyester acrylate B 50 Matting material: Calcium carbonate 20 White pigment: Titanium oxide 10 Solvent: Toluene 20 <Effects of the invention> Transfer to the object to be transferred using the above transfer material. After that, when UV rays or electron beams are irradiated, the surface of the transferred object becomes finely uneven due to crosslinking shrinkage of the ultraviolet curable resin or electron beam curable resin FAL and the matte Murayama existing on the surface of the transferred object. This results in a matte area on the surface of the transferred object. Therefore, even if the surface of the base sheet is smooth, a matte appearance can be achieved.

In addition, since the -a film can be used as a base sheet without pre-processing, it is inexpensive, and when finished as a transfer material, it is stronger than the film fZl in which extender pigments and the like are kneaded.

In addition, by keeping the curing conditions constant, the curing shrinkage rate of this ultraviolet curable resin or electron beam curable resin (a) and the degree of matting can be determined by appropriately selecting the material and mixing amount of the matte material (bl). The degree of matteness is more stable than the conventional method of pre-processing the base sheet and transferring these irregularities onto the surface of the transfer material.The degree of matteness is determined at the time of manufacturing the transfer material.
This can be confirmed at the time of transfer to the transfer target and when irradiating with ultraviolet rays or electron beams after transfer, but in the case of conventional methods, the degree of matteness is determined at the pre-processing stage, and it is not possible to adjust the degree of matteness. In contrast, in this invention, the degree of matting can be adjusted by appropriately preparing and selecting ultraviolet curable resins or electron beam curable resins with different curing shrinkage rates, or matting materials (total). is possible.

In addition, since the matte layer 2 can be printed under normal printing conditions such as gravure printing and screen printing, this matte layer 2
By partially providing the pattern layer 3 and the metal vapor deposition layer 4, it is possible to easily synchronize with the pattern layer 3 and the metal vapor deposited layer 4, and to obtain a transfer object having both a matte surface and a glossy surface.

In addition, if you want to further differentiate the degree of matteness between the matte parts, you can also use a base sheet manufactured by the conventional (x)/(yl/TZ+ method), and then apply the By providing the matte layer 2, it is possible to obtain transfer objects with different degrees of matteness in parts.

Furthermore, since the matte layer 2 is made of an ultraviolet curable resin or an electron beam curable resin, the surface of the transferred object has high hardness and excellent abrasion resistance.

[Brief explanation of the drawing]

FIG. 1 shows a cross section of the matte transfer material of the present invention. FIG. 2 shows a cross-sectional view of the matte molded product of the present invention. DESCRIPTION OF SYMBOLS 1... Base sheet, 2... Matte layer, 3... Design layer, 4... Metal vapor deposition layer, 5... Anchor layer, 6...
- Adhesive layer, 7... Transferred object.

Claims (4)

[Claims] (1) On the base sheet (1) with peelability,
An ultraviolet curable resin or an electron beam curable resin (a) that is solid in an uncured state, has no tackiness, and has shrinkage properties when cured, and an inorganic or organic substance having a particle size of 0.001 to 250 μm. A matte layer (2) is formed by mixing the matte material (b) consisting of the following, and an adhesive layer (6) is formed thereon.
) is formed on the matte transfer material. (2) The matte transfer material according to claim 1, which has a pattern layer 3 between the matte layer (2) and the adhesive layer (6). (3) The matte transfer material according to claim 1, which has a metal vapor deposited layer (5) between the matte layer (2) and the adhesive layer (6). (4) On top of the removable base sheet (1),
An ultraviolet curable resin or an electron beam curable resin (a) that is solid in an uncured state, has no tackiness, and has shrinkage properties when cured, and an inorganic or organic substance having a particle size of 0.001 to 250 μm. A matte layer (2) is formed by mixing the matte material (b) consisting of the following, and an adhesive layer (6) is formed thereon.
) is transferred to the transfer target, and the UV-curable resin or electron-beam-curable resin of the matte layer is cured by irradiating it with ultraviolet rays or electron beams. or electron beam curable resin (a)
crosslinking shrinkage and matte material present on the surface of the transferred object (b)
A method for producing a matte molded product, characterized in that the surface of the matte layer (2) is made uneven.