JP2014218018A - Transfer decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer decorative sheet that is formed with a convexoconcave constituting a mat surface therein, effectively prevents occurrence of problems of disappearance of a mat surface due to wear or fouling, readily controls the convexoconcave constituting the mat surface, and does not adversely affect decorative design due to printing.SOLUTION: The transfer decorative sheet has a multilayer structure in which a hard coat layer 3, an anchor coat layer 5, a decorative printing layer 7, and an adhesive material layer 9 are laminated on one surface of a transfer film 1 in this order. The surface of the anchor coat layer 5 is a mat surface.

Description

  The present invention relates to a transfer used to give a matte appearance to various base materials such as a housing in which a hard disk of a computer or a circuit board of a mobile phone is accommodated or a cover of various electric parts such as a notebook computer. It relates to a decorative sheet.

2. Description of the Related Art Transfer decorating sheets for the purpose of decorating various products formed from materials such as plastic and metal are known. That is, this transfer decorative sheet has a decorative print layer formed by printing together with a hard coat layer on one side of the transfer film, and is adhered and fixed to the surface of various products to be decorated. By decorating the transfer film, various products are decorated according to the decorative print layer.
Such a transfer decorating sheet is used for decorating a product having a three-dimensional shape such as a casing. This is because printing on a three-dimensional shape is much more difficult than a flat shape such as a sheet.

  By the way, in addition to decorating by printing or the like, it is also widely performed to give a matte appearance different from gloss (that is, a rough and textured appearance with no gloss) by a transfer decorating sheet.

As a transfer decorative sheet for imparting a matte appearance, for example, in Patent Documents 1 and 2, a matte surface (hereinafter sometimes simply referred to as a matte surface) is formed on one surface of a transfer film. It has been proposed to provide a hard coat layer, a decorative print layer, and an adhesive layer on the mat surface.
That is, according to this transfer decorative sheet, by peeling off the transfer film in a state where it is provided on the surface of a predetermined product, fine irregularities that form a matte surface are formed on the surface of the hard coat layer. Become.

  However, in such a transfer decorative sheet, in order to form a mat surface on the transfer film, it is necessary to add a matting agent such as inorganic fine particles or to perform mechanical processing such as sandblasting on the transfer film. There is a problem that the material of the transfer film is considerably limited. In addition, since the unevenness that becomes the mat surface is exposed on the outer surface, there is a problem that the mat surface disappears due to friction, intrusion of foreign matter, etc., and dirt easily adheres.

Patent Document 3 also proposes a transfer decorative sheet in which fine particles that are matting agents are blended in a hard coat layer.
However, with this transfer decorative sheet, although the degree of freedom of the transfer film is increased, the mat surface is formed on the hard coat layer where the outer surface is exposed, and therefore the mat surface disappears or becomes dirty due to friction or intrusion of foreign matter. Problems such as easy to do remain.
In this case, a protective layer or the like may be provided on the hard coat layer. However, with such a means, the original function of the hard coat layer for improving the scratch resistance is impaired.

Furthermore, Patent Document 4 proposes forming a matte surface on the decorative layer by forming the decorative layer with a foamable resin.
According to such means, since the unevenness forming the mat surface is formed inside, not only the degree of freedom of the material of the transfer film is increased, but also the problems such as the disappearance of the mat surface due to friction etc. and easy adhesion of dirt are solved. Has been.
However, in Patent Document 4, since unevenness is formed by foaming, there is a problem that it is extremely difficult to control the unevenness, it is difficult to form a uniform mat surface, and furthermore, decoration by printing becomes unstable, There are also problems such as limited print design.

JP 2008-247011 A JP2012-40700 JP 2008-173858 A JP 2012-206439 A

  Accordingly, an object of the present invention is to form unevenness forming a mat surface inside, effectively avoiding the problem of disappearance and contamination of the mat surface due to wear and the like, and easily controlling the unevenness forming the mat surface. An object of the present invention is to provide a transfer decorative sheet that can be used and that does not adversely affect the decorative design by printing.

According to the present invention, in the transfer decorative sheet having a multilayer structure in which the hard coat layer, the anchor coat layer, the decorative printing layer, and the adhesive layer are laminated in this order on one surface of the transfer film,
A matte surface is formed on the surface of the anchor coat layer, and is provided by a transfer decorative sheet used to give a mat-like appearance.

In the transfer decorative sheet of the present invention,
(1) The anchor coat layer is a thin layer having a thickness of 0.5 to 5 μm,
(2) A matting agent is blended in the anchor coat layer, and the average particle size of the matting agent is inorganic fine particles in the range of 0.5 to 8 μm.
Is preferred.
In the present invention,
(3) The transfer film is an unstretched polyolefin film, and the hard coat layer is formed directly on the surface of the transfer film,
(4) The unstretched polyolefin film has a crystallinity measured by X-ray diffraction in the range of 35 to 65%.
Or
(5) The transfer film is a polyester film, and the hard coat layer is formed on the transfer film surface via a release layer.
It is possible to adopt such a mode.

  The transfer decorative sheet of the present invention as described above is provided on the surface of the base material to be decorated via the adhesive layer, and then the transfer film is peeled off, thereby matting the base material. Appearance can be imparted.

In the present invention, the matte surface is formed on the surface of an extremely thin anchor coat layer used for firmly bonding the hard coat layer and the decorative print layer.
For this reason, the material and the like of the transfer film are not limited, and the problem of disappearance of the matte surface and contamination due to wear and the like is effectively avoided.
In addition, since the mat surface is not formed by foaming or the like, the unevenness forming the mat surface can be easily controlled, and further, the decorative design by printing is not adversely affected.

  Furthermore, the great advantage of blending a matting agent into the anchor coat layer in the present invention is that a matting agent is blended into an extremely thin anchor coat layer to form a mat surface, so that a thick hard coat layer is matted. Compared with the case where an agent is blended, a clear mat surface can be formed by using a small amount of a matting agent. That is, it is considered that because the anchor coat layer is thin, irregularities due to the matting agent are formed on both sides of the anchor coat layer.

  In the present invention, it is most preferable to use a polyolefin film, particularly a polypropylene film, as the transfer film. In this case, the transfer film can be easily peeled off without providing a release layer between the transfer film and the hard coat layer. The number of layers can be reduced, and productivity can be increased.

Sectional drawing which shows the layer structure of the transcription | transfer decorating sheet of this invention.

Referring to FIG. 1, the transfer decorative sheet of the present invention indicated as 10 as a whole is provided on one surface of a transfer film 1 with a hard coat layer 3, an anchor coat layer 5, a decorative print layer 7 and an adhesive layer 9. However, it has a multilayer structure laminated in this order, and a matte surface is formed on the surface of the anchor coat layer 5.
A release layer (not shown) is appropriately provided between the transfer film 1 and the hard coat layer 3 according to the material of the transfer film 1.

<Transfer film 1>
The material for forming the transfer film 1 is not particularly limited, and biodegradable typified by resins known per se, such as polyolefins, polyesters, polycarbonates, vinyl polymers, styrene polymers, polyamides, and polylactic acid. Resins, blends thereof and the like can be used, as long as they have a molecular weight sufficient to form a film. In addition, a thermosetting resin such as polyimide can be used as the base resin of the transfer film 1.
In the present invention, polyester and polyolefin are preferable from the viewpoint of moldability and cost.

Typical examples of the polyester include polyethylene terephthalate (PET), polybutylene terephthalate, and polyethylene naphthalate, and any of these may contain a copolymer unit. Such polyester is usually preferably biaxially stretched from the viewpoint of heat resistance and the like.
In addition, when the transfer film 1 is formed of polyester, a release layer is provided between the transfer film 1 and the hard coat layer 3. This is because the polyester film exhibits high adhesiveness to the hard coat layer 3 and thus cannot be peeled off unless a release layer is provided. This release layer will be described later.

Examples of polyolefins include ethylene resins (for example, low, medium or high density polyethylene, copolymers of ethylene and other α-olefins and cyclic olefins), propylene resins (for example, polypropylene, propylene and other α-olefins, Copolymers with cyclic olefins), poly 1-butene, and poly 4-methyl-1-pentene are typical. Among these, a propylene-based resin is optimal from the viewpoints of film strength and elongation.

In particular, when a polyolefin film is used as the transfer film 1, a release layer is not required between the hard coat layer 3. That is, polyolefin, particularly propylene resin, has poor adhesion to the hard coat layer 3, and as a result, the transfer film 1 can be peeled off without providing a special release layer. This is a great difference from the case of using a polyester film, which is the best mode of the present invention from the viewpoint of productivity and cost by reducing the number of layers of the transfer decorative sheet 10.
The polyolefin film may be subjected to a surface treatment such as a corona treatment in order to give an appropriate adhesion to the hard coat layer 3.

  The polyolefin film used as the transfer film 1 may be either stretched or unstretched, but is preferably unstretched from the viewpoint of securing elongation. That is, in the stretched polyolefin film, when the transfer decorative sheet 1 is provided on a three-dimensional base material such as a casing, the transfer film 1 (stretched polyolefin film) follows the bending at a curvature portion such as a corner portion. There is a risk that wrinkles may occur and the product value may be impaired. However, if it is not stretched, sufficient elongation is ensured, so that it can sufficiently follow the bending of the corner portion and the like, and the generation of wrinkles can be effectively prevented.

  By the way, the unstretched polyolefin film has considerably low heat resistance as compared with the polyester film described above. For this reason, the heat history when the transfer decorative sheet 10 is produced and the transfer decorative sheet 10 are determined based on a predetermined basis. There is a risk of deformation due to the heat history when it is provided on the surface of the material. In order to avoid such an inconvenience, the unstretched polyolefin film is preferably crystallized to such an extent that its elongation is not impaired, and has improved heat resistance. The degree of conversion is preferably in the range of 35 to 65%, particularly 40 to 60%.

The crystallinity is determined by performing X-ray diffraction as shown in the examples described later, performing peak separation of the diffraction intensity curve according to a conventional method, and having a diffraction angle (2θ) of 14.2 degrees, Calculate the sum (Sc) of peak areas derived from the crystals observed around 17.1, 18.6, 21.4, 21.9, 25.7, and 28.6 degrees; The area (Sa) of the peak derived from the broad amorphous observed around 16.3 degrees is obtained and calculated by the following formula (1).
Crystallinity (%) = 100 × Sc / (Sc + Sa)

  The polyolefin film having a crystallinity in the above range uses, for example, a copolymer (may be a homopolymer) having an α-olefin content of 10 mol% or less used as a comonomer, and a known crystal nucleating agent as appropriate. It can be obtained by molding into a film using a blended material or by performing an appropriate heat treatment after film formation.

  The transfer film 1 described above can be formed by a known molding method, such as cast molding or inflation molding, depending on the type of resin material that forms the transfer film 1, or can be molded by extrusion molding, injection molding, or the like. Is possible.

The thickness of the transfer film 1 is not particularly limited as long as it has a thickness that satisfies the mechanical properties required for the film, but the workability and cost for peeling are considered. And it is about 25-150 micrometers normally.
Further, the transfer film 1 may contain various additives known per se, for example, an ultraviolet absorber, an antioxidant, an antiblocking agent and the like. Various pigments and the like may be blended, but the amount should normally be such an amount as to ensure transparency so that the appearance of the matte tone and the color of the decorative printing layer 7 can be visually recognized.

<Hard coat layer 3>
The hard coat layer 3 laminated on one surface of the transfer film 1 functions as a surface protective layer, and is provided for imparting scratch resistance, abrasion resistance, and the like. As can be understood from the above, after the transfer film 1 described above is peeled off, it is exposed on the surface, and its thickness is also considerably thick, and usually has a thickness of about 2 to 30 μm.

Such a hard coat layer 3 is known per se and is formed of a hard resin.
For example, a curable acrylic resin, alicyclic epoxy resin, glycidyl ether epoxy resin, urethane vinyl ether, polyester vinyl ether, or a copolymer resin thereof obtained by irradiating a monomer having a plurality of polymerizable functional groups with ultraviolet rays or the like The hard coat layer 3 can be formed, and it is particularly preferable to form the hard coat layer 3 with a curable acrylic resin in order to obtain high adhesiveness with the decorative print layer 7 described later. .
Of course, in addition to the above, the hard coat layer 3 can also be formed using a thermosetting resin such as a phenol resin, a urea resin, an alkyd resin, an epoxy resin, or an unsaturated polyester resin.

The hard coat layer 3 can be formed, for example, by applying a varnish containing the hard resin to one surface of the transfer film 1, drying it, removing the solvent, and curing it. Moreover, after apply | coating the monomer composition of a hard resin to one side of the transfer film 1, it can form by making it harden | cure by ultraviolet irradiation etc.
In addition, it does not restrict | limit especially as an application | coating means, Well-known methods, such as a dipping method, a spin coat method, a dip spin coating method, a spray method, brush coating, or roller coating, are employable.

<Anchor coat layer 5>
The anchor coat layer 5 is a layer for firmly adhering the hard coat layer 3 and the decorative print layer 7 and has a function as a so-called primer, and is therefore an extremely thin layer. The thickness is usually 0.5 to 5 μm.

In general, a (meth) acrylic resin is preferably used as the base resin for the anchor coat layer 5.
The (meth) acrylic resin can be obtained, for example, by polymerizing the following mono (meth) acrylate monomers and polyfunctional (meth) acrylate monomers alone or in combination of two or more.
1. Mono (meth) acrylate monomers;
Methyl (meth) acrylate Ethyl (meth) acrylate Glycidyl (meth) acrylate 2-Cyanomethyl (meth) acrylate Benzyl (meth) acrylate Polyethylene glycol mono (meth) acrylate Allyl (meth) acrylate 2-hydroxyethyl (meth) acrylate Glycidyl (meth) ) Acrylate 3-Hydroxypropyl (meth) acrylate Glyceryl mono (meth) acrylate 2- (meth) acryloxyethyl acetyl acetate Polyfunctional (meth) acrylate monomers;
Ethylene glycol di (meth) acrylate Diethylene glycol di (meth) acrylate Triethylene glycol di (meth) acrylate Nonaethylene glycol di (meth) acrylate Propylene glycol di (meth) acrylate Dipropylene glycol di (meth) acrylate 2,2'-bis [4- (Meth) acryloyloxyethoxyphenyl] propane 2,2′-bis [4- (meth) acryloyloxyethoxyethoxyphenyl] propane 2,2′-bis {4- [3- (meth) acryloyloxy- 2-hydroxypropoxy] phenyl} propane 1,4-butanediol di (meth) acrylate 1,6-hexanediol di (meth) acrylate trimethylolpropane tri (meth) acrylate urethane (meth) a Relate epoxy (meth) acrylate

  As a method for forming the matte surface on the surface of the anchor coat layer 5, a method of chemically matting when forming the anchor coat layer (that is, a part of the hard coat layer surface is formed by the solvent used at the time of applying the anchor coat layer). And a method of forming a matte tone by forming an anchor coat layer as a thin layer on the surface after melting and unevenness is formed, a method of physically matting, a method of blending a matting agent, and the like.

As described above, in the present invention, it is very possible to add a matting agent to the anchor coat layer 5 formed from such a (meth) acrylic resin or the like to form a matte surface on the anchor coat layer 5. preferable.
That is, since the matting agent is blended in such a thin layer, a mat surface having at least a good amount of the matting agent can be expressed, and the mat surface is formed on both surfaces of the anchor coat layer 5. As a result, a clear matte appearance is imparted. For example, when a matting agent is blended in a thick layer, fine unevenness due to the matting agent is reflected only on one surface of the layer, and the matting agent for expressing fine unevenness is used. The amount also becomes large depending on the thickness of the layer.

The matting agent may be formed from various inorganic fine particles, but generally, oxide or composite oxide fine particles containing elements such as Si, Al, Ti and Fe are preferable from the viewpoint of cost and the like. In general, silica (SiO ₂ ) is used, and for example, those having an average particle diameter of about 0.5 to 8 μm as measured by a laser diffraction scattering method are preferably used. That is, if the particle size is excessively fine, it may be difficult to agglomerate and disperse uniformly in the anchor coat layer 5, and fine irregularities for forming a mat-like appearance may be formed. Can be difficult. Furthermore, if a matting agent having an excessively large particle size is used, even if fine irregularities can be formed, transparency may be impaired, and the matte appearance may become unclear.

  Such a matting agent is generally used in an amount of 0.5 to 20 parts by mass, particularly 1 to 15 parts by mass, per 100 parts by mass of the base resin forming the anchor coat layer 5.

  In the present invention, the anchor coat layer 5 in which the above matting agent is blended is present on either the hard coat layer 3 side or the decorative print layer 7 side, as shown in the examples described later. The average surface roughness Rz (JIS B-0101-1994) is in the range of 5.0 to 15.0 μm, and fine irregularities suitable for exhibiting a matte appearance are formed on either side. .

The above-described anchor coat layer 5 is formed on the hard coat layer 3 formed on the transfer film 1 with the organic solvent solution of the base resin or the organic solvent solution of the base resin containing a predetermined amount of the matting agent. It can be easily formed by coating, heating and drying.
Moreover, the application means may be the same as that of the hard coat layer 3, and drying may be performed at a temperature of about 60 to 100 ° C. by air drying, oven heating or the like.

<Decorative printing layer 7>
The decorative printing layer 7 is a so-called ink layer, has a thickness of about 2 to 10 μm, and is applied with an ink in which a colorant such as a pigment of each color is dispersed in the resin for decoration and dried. And an image such as letters may be formed on the anchor coat layer 5 side as necessary.

Although it does not restrict | limit especially as ink to be used, Usually, the solvent-type ink by which the coloring agent was mix | blended with urethane acrylate is used suitably. That is, this solvent-type ink is a compound in which a (meth) acrylate containing a hydroxyl group and a polyisocyanate (usually the ends are blocked with a blocking agent) are blended in a volatile organic solvent as a resin component, As appropriate, after forming a printed image on the anchor coat layer 5 by gravure printing, ink jet printing, or the like, this solvent-type ink is applied by the method described above, and heated at a temperature of about 100 ° C. for a short time, The acrylate and polyisocyanate react and cure, and the decorative print layer 7 having excellent heat resistance is formed.
That is, since such a decorative printing layer 7 is excellent in heat resistance, when the transfer decorative sheet 10 is provided on the surface of a predetermined substrate, a method of receiving a high thermal history such as an injection molding simultaneous decoration method is used. It becomes possible to adopt.

<Adhesive layer 9>
The adhesive layer 9 provided on the decorative print layer 7 is used for bonding and fixing the transfer decorative sheet 10 to the surface of the base material to be decorated. It is formed using an appropriate thermoplastic resin according to the kind of material, and the thickness is about 1 to 10 μm.

  For example, when the substrate is made of plastic, a resin of the same type as the plastic is used as an adhesive. For example, when the substrate is made of polyolefin, polyolefin is used, and when the substrate is made of polyester such as PET, polyester is used. When the substrate is formed of a thermosetting resin, various metals, glass, ceramic, etc., an unsaturated carboxylic acid-modified olefin resin such as an olefin resin graft-modified with maleic anhydride or the like is used as the adhesive. Used as.

  Such an adhesive layer 9 is also easily formed by using a solution obtained by appropriately dissolving the above-described adhesive in an organic solvent, applying it on the decorative printing layer 7 and drying it.

<Release layer>
As already described, the release layer is provided when the transfer film 1 exhibits high adhesion to the hard coat layer 3 such as polyester. For example, a resin solution such as silicon resin or fluorine resin is used. It is formed by applying to the transfer film 1 and drying, and the thickness is usually about 0.5 to 3 μm.
That is, when a polyolefin film such as a polypropylene film is used, it is not necessary to provide this release layer.

  In addition, when the release layer is provided on the transfer film 1, the above-described layers are naturally laminated on the release layer.

<Use of transfer decorative sheet 10>
The transfer decorative sheet 10 of the present invention is made of a base material made of various materials (as described above, various plastics, metals, glass, ceramics, etc.), particularly a three-dimensional housing such as a mobile phone or a notebook computer. It is used by being bonded and fixed to the surface of various electrical products such as a cover and a hard disk via an adhesive layer 9.

  As a means for providing the transfer decorating sheet 10 on the base material, various known means can be adopted. For example, the transfer decorating sheet 10 is decorated by an injection molding simultaneous decorating method or a vacuum molding decorating method. It can be adhesively fixed to the surface of the substrate to be obtained.

The injection molding simultaneous decorating method is a means adopted when a base material is formed of plastic that can be injection molded. For example, the transfer decorative sheet 10 is molded in an injection mold and the adhesive layer 9 is molded. In this method, the base material is formed and the transfer decorative sheet 10 is attached at the same time by placing the resin to be exposed inside and injecting and filling the resin forming the base material into the mold.
On the other hand, the vacuum molding decoration method is applied to a base material in which the above method cannot be adopted, and the adhesive material layer 9 is melted in a state where the transfer decoration sheet 10 is superimposed on the base material surface. This is a technique in which the transfer decorative sheet 10 is pressure-bonded to the surface of the substrate by evacuation while heating to a temperature.

  The base material on which the transfer decorative sheet 10 is provided on the surface as described above has a matte appearance imparted by the color applied to the decorative print layer 7 or the matte surface formed on the anchor coat layer 5. 1 is recognized by general consumers through 1 and is sold with a high-class feeling. After the sale, general consumers will peel off the transfer film 1 and use the substrate.

In such a transfer decorative sheet 10 of the present invention, since the mat surface is formed on the inner anchor coat layer 5, problems of disappearance of the mat surface and contamination due to wear and the like are effectively avoided. In addition, it is easy to control the unevenness that forms the mat surface, and in addition, when a mat surface is formed by adding a mat agent to the anchor coat layer, a clear mat surface is formed by using a small amount of the mat agent. be able to.
In addition, when polyolefin is used as the transfer film 1, there is no need to provide a release layer, so the number of layers is small, which is extremely excellent in terms of productivity and cost.

The invention is illustrated by the following examples.
Various measurements used in the following experiments were performed as follows.

1) measurement of crystallinity;
As an index of crystallinity of the transfer film, an X-ray diffractometer (model number: JDX-3500) manufactured by JEOL Ltd. was used, and X-ray diffraction measurement was performed under the following conditions to calculate the crystallinity.
Target: Copper (Cu-Kα line)
Tube voltage-tube current: 40 kV-400 mA
X-ray incidence method: vertical beam transmission method Monochromatization: graphite monochromator Divergence slit: 0.2 mm
Receiving slit: 0.4mm
Detector: Scintillation counter Measurement angle range: 9.0 ° to 31.0 °
Step angle: 0.04 °
Counting time: 4.0 seconds Sample rotation speed: 120 rotations / minute The crystallinity is obtained by performing peak separation of the diffraction intensity curve, and the diffraction angle 2θ is 14.2 °, 17.1 °, 18.6 °, The sum of the crystalline peak areas observed near 21.4 °, 21.9 °, 25.7 ° and 28.6 ° is Sc, a broad amorphous peak observed near 16.3 °. The area was Sa, and the calculation was performed by the above-described formula (1).

2) measurement of surface roughness;
The transfer decorative sheet transferred to the casing is peeled off, and the surface roughness of the transferred protective / decorative layer is measured using a Mitutoyo contact type surface roughness measuring instrument (model number: SJ-401) according to JIS B 0601. The average roughness of the surface at a tip radius of 2 μm (60 °), a measuring speed of 0.5 mm / s, a cutoff value (λc) of 0.8 mm, a cutoff value (λs) of 25 μm, and a measuring length of 0.8 mm × 5 The thickness (Ra and Rz) was measured.

3) Evaluation of moldability;
Vacuum forming:
The transfer decorative sheet was heated at 98 ° C. for 40 seconds and then transferred to a polycarbonate casing by vacuuming. At that time, the state of film elongation and decoration (design) was visually observed, and the following determinations were made.
○: There is no problem in the elongation and decoration of the film. ×: The elongation of the film is insufficient, and the decoration (pattern) is cracked.
Injection molding:
The transfer decorative sheet was set in a mold, PC / ABS resin was injected at 240 ° C. to form a housing, and the film was transferred at the same time. At that time, the state of film elongation and decoration (design) was visually observed, and the following determinations were made.
○: There is no problem in the elongation and decoration of the film. ×: The heat resistance of the film is insufficient, the film is melted, and the decoration (pattern) is broken.

4) Evaluation of wear resistance;
The transfer decorative sheet transferred to the housing is peeled off, and the transferred protective / decorative layer is rubbed with a tissue paper folded in four. The surface state of the protective / decorative layer is visually observed, and the following determination is made. It was.
○: No abnormality was observed in the appearance. ×: Inferior in wear resistance, clogging of foreign matters and falling off was observed, resulting in poor appearance.

Example 1
(Creation of transfer film)
T-die system film of 3 types and 3 layers consisting of 3 single-screw extruders with a screw diameter of 75 mm for the intermediate layer and 2 single-screw extruders with a screw diameter of 50 mm for both outer layers. Using a film-forming apparatus, Sumitomo Chemical Co., Ltd. product number: FLX80E4 (melting point = 161 ° C, MFR = 8.0 g / 10 min; at 230 ° C) is used for the intermediate layer extruder, and the cooling roll side extruder is Japan. Product number: WFX4 (melting point = 126 ° C., MFR = 7.0 g / 10 min; at 230 ° C.) manufactured by Polypro Co., Ltd., manufactured by Sumitomo Chemical Co., Ltd., product number: FLX80E4 (melting point = 161 ° C., MFR = 8.0 g / 10 min; at 230 ° C.), extruded from T die under conditions of resin temperature 250 ° C., residence time 1 min, T die temperature 240 ° C., cooling roll at 50 ° C. Through three layers with a total thickness of 70 μm To give the Shin film. The thickness composition ratio of the three layers is approximately 1: 1: 1. Next, the film was subjected to corona discharge treatment so that the wetting index of the surface on the cooling roll side of this film was 42 mN / m, and further aged at 40 ° C. for 24 hours to obtain a polyolefin-based transfer film: CPP (a). .
Using this CPP (a), the evaluation of (1) was performed. The evaluation results are shown in Table 1.

(Creation of transfer decorative film)
After coating 15 μm of hard coating agent on the corona-treated surface of CPP (a): HC (a) (Pertron manufactured by Pernox Co., Ltd., product number: XJA-0217-Si, solvent: methyl isobutyl ketone 68%) An anchor coating agent: AC (a) (Ryoduras manufactured by Toyo Ink Co., Ltd., product number: LCH3000, solvent: methyl ethyl ketone 90%) was applied at a thickness of 1 μm.
During AC (a) coating, the coating of anchor coating agent is caused by the fact that the surface of HC (a) coated earlier is slightly dissolved due to excessive methyl ethyl ketone, which is the solvent for AC (a), causing whitening (fine irregularities). The back surface was matte. Printing and an adhesive were applied to the film to prepare a transfer decorative film.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Example 2
Hard coating agent is HC (b) (Toyo Ink Co., Ltd. varnish part number: YU705HC varnish, solvent: methyl ethyl ketone / toluene 65%), and anchor coating agent is AC (b) (Toyo Ink Co., Ltd. anchor part number: V425VM) , Solvent: methyl ethyl ketone / toluene 70%) 100 parts by weight The same procedure as in Example 1 was performed except that 5 parts by weight of silica (average particle size: 2 μm) was blended as a matting agent. A transfer decorative film was obtained.
By blending the matting agent into the anchor coat layer that is a thin film, the surface after application of the anchor coating agent became matte.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Example 3
The transfer decoration was carried out in the same manner as in Example 2 except that PET (a) (PET film manufactured by Toyobo Co., Ltd., product number: E5100 released to 50 μm) was used instead of CPP (a). A film was obtained.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Example 4
Nippon Steel, Sumitomo Chemical Co., Ltd., product number: FLX80E4 (melting point = 161 ° C., MFR = 8.0 g / 10 min; at 230 ° C.) 98 parts by weight supplied to the extruder for the intermediate layer and both outer layers Rika Co., Ltd., product number: PC25-HA (Nippon Nippon Rika Co., Ltd. nucleating agent: Rikaclear PC-1, 2.5 parts by weight MB) was used as a mixture of 2 parts by weight, and the temperature of the cooling roll was 25 ° C. Except for this, the same procedure as in Example 2 was carried out to obtain a polyolefin-based transfer film: CPP (b).
Using this CPP (b), the evaluation of (1) was performed. The evaluation results are shown in Table 1.
Subsequently, a transfer decorative film was obtained in the same manner as in Example 2 except that this CPP (b) was used.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Comparative Example 1
Except that the anchor coating agent was only 100 parts by weight of AC (b) (anchor product number: V425VM, solvent: methyl ethyl ketone / toluene 70% manufactured by Toyo Ink Co., Ltd.), transfer was carried out in the same manner as in Example 2 above. A decorative film was obtained.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Comparative Example 2
A transfer decorative film was obtained in the same manner as in Comparative Example 1 except that the hard coating agent was HC (c) (manufactured by Kyoeisha Chemical Co., Ltd., product number: SMP220A-ST1, solvent: methyl ethyl ketone 50%). .
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Comparative Example 3
The resin supplied to the extruder for the intermediate layer and both outer layers is manufactured by Sumitomo Chemical Co., Ltd., product number: FLX80E4 (melting point = 161 ° C., MFR = 8.0 g / 10 minutes; at 230 ° C.) only 100 parts by weight, A polyolefin transfer film: CPP (c) was obtained in the same manner as in Example 2 except that the temperature of the cooling roll was 25 ° C.
Using this CPP (c), the evaluation of the above (1) was performed. The evaluation results are shown in Table 1.
Subsequently, a transfer decorative film was obtained in the same manner as in Example 2 except that this CPP (c) was used.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Comparative Example 4
A transfer decorative film was obtained in the same manner as in Example 2 except that CPP (c) (OPP film manufactured by Sun Tox Co., Ltd., product number: PA21 60 μm) was used instead of CPP (a). . Moreover, evaluation of said (1) was performed using this CPP (c). The evaluation results are shown in Table 1.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

Comparative Example 5
Hard coating agent was blended with 95 parts by weight of HC (b) (Toyo Ink Co., varnish, product number: YU705HC varnish, solvent: methyl ethyl ketone / toluene 65%) and 5 parts by weight of silica (average particle size: 2 μm) as a matting agent. A transfer decorative film was obtained in the same manner as in Comparative Example 1 except that the mixed solution was used.
Evaluation of said (2)-(4) was performed using this transcription | transfer decorating film. The evaluation results are shown in Table 1.

1: transfer film 3: hard coat layer 5: anchor coat layer 7: decorative printing layer 9: adhesive layer 10: transfer decorative sheet

Claims (7)

In the transfer decorative sheet having a multilayer structure in which the hard coat layer, the anchor coat layer, the decorative printing layer, and the adhesive layer are laminated in this order on one surface of the transfer film,
A transfer decorative sheet used for imparting a matte appearance, wherein a matte surface is formed on the surface of the anchor coat layer.   The transfer decorative sheet according to claim 1, wherein the anchor coat layer is a thin layer having a thickness of 0.5 to 5 μm.   The transfer decorative sheet according to claim 1 or 2, wherein a matting agent is blended in the anchor coat layer, and the matting agent is inorganic fine particles having an average particle size in a range of 0.5 to 10 µm.   The transfer decorative sheet according to claim 1, wherein the transfer film is an unstretched polyolefin film, and the hard coat layer is directly formed on the surface of the transfer film.   The transfer decorating sheet according to claim 4, wherein the unstretched polyolefin film has a crystallinity measured by X-ray diffraction in a range of 35 to 65%.   The transfer decorative sheet according to any one of claims 1 to 3, wherein the transfer film is a stretched polyester film, and the hard coat layer is formed on the surface of the transfer film via a release layer.   A transfer decorative sheet according to any one of claims 1 to 6 is provided on the surface of a base material to be decorated via the adhesive layer, and then the transfer film is peeled off, thereby matting the base material. A transfer decoration method that gives a toned appearance.

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