JPH04278400A - Mat transfer foil - Google Patents

Abstract

PURPOSE:To provide a mat transfer foil excellent in the scratch resistance of the surface of a mat resin layer, improved in cutting and excellent in workability and processability. CONSTITUTION:Suede ink prepared by adding 250 pts. of bead pigment to 100 pts. of a binder resin is applied to the surface of a coating mat PET film 2 by die coating so that a coating amount becomes 25g/m<2> at the time of drying to form a mat resin layer 2 and an adhesive is applied to the surface of the resin layer to form a mat transfer foil.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides a matte surface with a suede-like soft texture with excellent scratch resistance to the surface of the transfer target, and also provides transfer workability with good foil cutting during transfer. Concerning a good matte transfer foil.

0002

[Prior Art] Traditionally, in the fields of furniture, building materials, light electrical appliances, etc., transfer foils have been used to give matte designs to product surfaces, depending on the surface condition and materials used to give the matte surfaces. It is widely applicable regardless of the situation, so it was widely practiced. The above-mentioned transfer foil is a so-called matte transfer foil in which a transfer layer is laminated on the surface of a releasable base film, and the base film side of the transfer layer is formed in a matte state. The matte transfer foil has a transfer layer consisting of a matte resin layer and an adhesive layer laminated to the resin layer, and after the adhesive layer of the transfer foil is stacked on the object to be transferred so as to be in contact with it (heated) and pressed. By peeling off the base film, the base film side of the matte resin layer appears on the surface of the object to be transferred, and a matte design can be imparted to the object to be transferred.

[0003] Conventionally, various methods have been used to form the matte resin layer of matte transfer foil on a matte surface. A known method is to disperse bead pigments such as beads or nylon beads in a binder resin to form a matte surface due to the bead pigments. Initially, resins such as lacquer type or chelate-modified acrylic resin were used as the binder resin for the above matte resin layer, but the matte resin layer using these resins
Since the scratch resistance of the surface was low, matte transfer foils using binder resins with excellent scratch resistance in the matte resin layer have been proposed (for example, Japanese Patent Application No. 2-263526).
etc).

0004

[Problems to be Solved by the Invention] However, in order to improve the abrasion resistance of the surface of the matte resin layer, the above-mentioned conventional transfer foil uses a resin with strong film-forming ability. The separation between the transferred part and the non-transferred part on the transfer target object becomes poor, the workability during transfer decreases, and furthermore, the cut part between the non-transferred part of the transfer layer is not formed neatly,
There was a problem in that it was not possible to obtain a product with an excellent design.

[0005] The present invention has been made to solve the above-mentioned drawbacks of the prior art, and has excellent scratch resistance on the surface of the matte resin layer, good foil cutting ability, and improved workability, processability, etc. The purpose is to provide an excellent matte transfer foil.

[0006]

[Means for Solving the Problems] As a result of intensive studies in view of the above problems, the present inventor has found that by setting the mixing ratio of the bead pigment and binder resin in the matte resin layer to a specific range, It was discovered that a matte transfer foil with good surface properties, capable of imparting a matte design, and excellent in workability during transfer work can be obtained, leading to the completion of the present invention.

That is, the matte transfer foil of the present invention is a transfer foil in which a matte resin layer made of a binder resin and bead pigment is laminated on the surface of a releasable base sheet. It has a structure in which the bead pigment is contained in an amount of 170 to 300 parts by weight based on 100 parts by weight of the binder resin. Further, in the above-mentioned transfer foil, it is preferable to form the matte resin layer so that the coated amount of the matte resin layer is in the range of 10 to 30 g/m 2 when dry.

[0008]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view showing one example of the transfer foil of the present invention. As shown in FIG. 1, the matte transfer foil 1 of the present invention is a transfer foil in which a matte resin layer 3 made of a binder resin 31 and bead pigments 32 is laminated on the surface of a releasable base sheet 2. The bead pigment 32 of the matte resin layer 3 is formed to contain 170 to 300 parts by weight based on 100 parts by weight of the binder resin. And the matte resin layer has a decorative layer 4 with a pattern,
A transfer layer 6 is formed by sequentially laminating adhesive layers 5.

[0009] The binder resin 31 and bead pigment 32
The ratio by weight should be 170 to 300 parts by weight to 100 parts by weight of the binder resin, but more preferably 19 parts by weight of the binder resin to 100 parts by weight of the bead pigment.
It is preferable to use 0 to 280 parts by weight. If the content of the bead pigment is less than 170 parts by weight, the foil tearability will be reduced and the design of the surface of the transfer layer will be poor. Furthermore, if the content of the bead pigment exceeds 300 parts by weight, it will be difficult to sufficiently retain the bead pigment with the binder resin, and there is a possibility that the surface properties of the matte resin layer will deteriorate.

[0010] When forming the matte resin layer 3, it is preferable that the coating amount is in the range of 10 to 30 g/m2 when dry. This has a coating amount of 10g/
m2 or more, more sufficient surface properties can be obtained, and 30
This is because if it is less than g/m2, the foil will cut very well and the workability will be further improved.

The binder resin 31 forming the matte resin layer 3 of the transfer foil 1 of the present invention may be anything other than a thermosetting resin, such as a thermoplastic resin or an ionizing radiation-curable resin. Examples of such resins include acrylic, chelate-curing acrylic, polyester urethane, epoxy-curing acrylic, acrylic urethane, urethane elastomer, polyester, acrylate, urethane acrylate, 2-hydroxylethyl acrylate, neopentyl glycol di Examples include ionizing radiation-curable resins such as acrylates. In addition to the above-mentioned resins, binder resins include acrylic resins, vinyl chloride-vinyl acetate copolymers, rubber resins, cellulose nitrate, and other resins alone or in combination (resins used in the adhesive layer). May be added. In other words, by adding the same resin used for the adhesive layer to the binder resin,
Adhesion between the matte resin layer and the adhesive layer can be improved.

As the binder resin 31, acrylic urethane, urethane elastomer, etc. are preferable among the above, and specifically, a linear polyol having an active hydrogen in the molecule is reacted with a compound having an isocyanate group in the molecule. There is a thermoplastic polyurethane resin obtained.

As the linear polyol compound of the thermoplastic polyurethane resin, addition reaction products of a diol compound having an aromatic or spiro ring skeleton and a lactone compound or a derivative thereof or an epoxy compound, a dibasic acid such as phthalic acid, etc. Condensation products with polyols such as ethylene glycol, polyester polyols such as ring-opened polyester compounds derived from cyclic ester compounds, polytetramethylene ether glycol, polyethylene glycol,
Examples include polyether polyols such as polypropylene glycol, polycarbonate polyols, and polyesteramide polyols.

Examples of the compound having an isocyanate group of thermoplastic polyurethane resin include toluene diisocyanate (TDI), diphenylmethane diisocyanate (
MDI), paraphenylene diisocyanate (PHDI)
), dimethyldiphenyl diisocyanate (TODI)
, dianisidine diisocyanate (DADI), naphthalene diisocyanate (NDI), dicyclohexylmethane diisocyanate (HMDI), hexamethylene diisocyanate (HDI), trimethylhexamethylene diisocyanate (TMDI), tetramethylxylylene diisocyanate (TMXDI), isophorone diisocyanate (IPDI) Examples include diisocyanates such as , and modified isocyanates obtained by urethane-modifying these isocyanate monomers with polyols such as diols and triols. In particular, isocyanates that are linear and have a long main chain are more preferable because they can form a matte resin layer that is flexible and has excellent scratch resistance.As thermoplastic urethane resins, those with a molecular weight of 20,000 to 40
000 and a Tg of -40°C to -30°C.

Bead pigment 32 is made by dispersing fine pigment powder in synthetic resin and molding it into granules.It has a high matte effect, looks matte from any direction, and has a suede-like texture with a particularly soft texture. surface can be formed. As the material of the bead pigment 32, for example, Fe2 O3, T
A fine powder of a normal pigment such as iO2, CaCO3, or quinacridone is used, and the surface of the fine powder is coated with an elastic resin such as polyurethane, acrylic, epoxy, polyester, nylon, fluororesin, vinyl chloride resin, or the like. Examples include those coated with plasticizers, stabilizers, surfactants, etc. depending on the situation.

The particle size of the bead pigment 32 varies depending on the thickness of the matte resin layer 3 to be formed, but the particle size distribution is 5 to 80 μm, and the maximum of the distribution is 10 to 35 μm.
If a material in the μm range is used, especially the matte resin layer 3
There is no risk of spoiling the suede-like texture, and the decorative layer 4
This is more preferable because it improves the coating properties and adhesion of the adhesive layer 5. The most preferable bead pigment has a particle size of 13~
Examples include 40 μm polyurethane resin bead pigments and acrylic resin bead pigments. Further, the color of the bead pigment 32 may be arbitrarily selected according to desire. For example, a colorless and transparent bead pigment may be used to form a deep matte resin layer, or a combination of bead pigments of two or more colors may be used. hand,
It is possible to form a matte resin layer with a wide variety of variations.

The base sheet 2 may be any sheet that has mold releasability from the matte resin layer 3, and the material of the base sheet 2 may be, for example, polyester, polyethylene, polypropylene, polyamide, acrylic, polycarbonate, polyacrylate, polyvinyl chloride, polyethylene terephthalate,
Films made of polystyrene, polyvinyl fluoride, polytetrachloroethylene, Teflon, polyvinylidene fluoride, polyvinyl alcohol, polyether ether ketone, polyimide, polybutylene terephthalate, cellophane, etc. can be used alone, or by bonding these films together, or with their resins. Examples include those that are directly coated to make a laminated film, or those that are composited with aluminum foil etc.
Among them, polyester film is most preferred.

The base sheet 2 is made of resins such as acrylic, melamine, urethane, and epoxy, polyester acrylate, urethane acrylate, 2-hydroxyethyl acrylate, neopentyl glycol dichloride, etc., for the purpose of improving mold releasability from the matte resin layer 3. A known mold release treatment can be performed using a mold release agent prepared by adding a mold release material such as wax or silicone to a mold release resin such as an ionizing radiation-curable resin such as acrylate.

In the present invention, in order to further enhance the matting effect of the matting resin layer 3, as shown in FIG.
shaped film) can be used. Fine uneven pattern 7
There are two methods: applying sandblasting or chemical etching to the surface of the base sheet, mixing a matting agent into the base sheet, and adding a matting agent into the release agent as shown in Figure 1. It can be provided by a method of forming a finely textured coating layer 12 to which is added. Note that the shaped film may be formed smoothly without forming an uneven pattern on the surface.

[0020] In the fine unevenness pattern 7, the depth and width of the depressions are 0.
．． A thickness of about 1 to 50 μm is preferable, and as the uneven shape, designs such as sand grain, satin finish, parallel hair lines, molding from natural suede, etc. are used, and in addition to the above unevenness, an uneven shape such as a leather pattern is used. May be attached.

FIG. 2 is a cross-sectional view showing an example of a base sheet (formed film), and as shown in FIG. 10, and its shape is such that the center of gravity X of the fine particles 11 protrudes from the average level surface of the finely textured coating layer 12, and the surface gloss value (75°C incidence) is 0.
5 to 2.5 and the surface roughness is 0.8 to 30 μm, and it is preferable that the protrusions at the locations where the fine particles are present be formed into outwardly expanding hemispherical protrusions. The above surface gloss value is measured by a specular gloss measurement method according to JIS Z8741, and the surface roughness is determined by measuring the surface roughness at a location where fine particles 11 of the finely textured coating layer 12 are not present, as shown in FIG. It is expressed as the distance from the position H of the coating film to the maximum protrusion Y where the fine particles 11 are present.

The fine particles 11 are made of a material such as silica, alumina, calcium carbonate, precipitated barium sulfate, clay, shirasu balloon, benzoguanamine, or talc, and have a particle size of 0.
A spherical or smooth-surfaced elliptical, eggplant-shaped, or rotating body made of cardioite rotated about an symmetrical axis with a diameter of about 8 to 30 μm is used. The amount of the fine particles 11 to be added to the mold release resin 10 may be determined as appropriate depending on the surface gloss value of the coating surface.

By forming the finely uneven coating layer 12 on the outwardly expanding hemispherical protrusions as described above, the hemispherical protrusions of the matte resin layer 12 formed on the surface of the excipient film are formed as shown in FIG. The portion corresponding to the area is formed in a concave shape (concave portion 8), and the light incident on the surface of the matte resin layer 3 is easily absorbed by repeating reflection inside the concave portion 8 before exiting to the outside. A greater matte effect can be obtained.

[0024] For the adhesive layer 5, an adhesive appropriately selected depending on the material of the object to be transferred may be used, and in general, adhesives such as acrylic resin, rubber resin, thermoplastic urethane resin, etc. alone or in combination are used. can. In particular, when a mixture of urethane elastomer and vinyl chloride-vinyl acetate copolymer is used for the matte resin layer 3, adhesion can be improved by using a resin in which about 10 to 25% of vinyl chloride-vinyl acetate copolymer is added to the above resin. Improved and more preferable. Moreover, the adhesive layer 5 is
When a material having adhesive properties is used for the matte resin layer 3, it is not necessary to form it in particular.

[0025] In the matte transfer foil of the present invention, a decorative layer 4 such as a printed pattern layer (partially or entirely solid), a metal vapor deposition layer, a concealing layer, etc. can be formed as necessary.

In manufacturing the matte transfer foil 1 of the present invention, first, a base sheet 2 with a desired surface shape is prepared,
Next, a matte resin layer 3 is provided on the surface of the base sheet 2,
Furthermore, a decorative layer 4, an adhesive layer 5, etc. are provided as necessary. The matte resin layer 3 includes the above binder resin 31 and bead pigment 3.
2. It can be formed by applying a matte paint to which other resins, additives, solvents, diluents, etc. are added as necessary, by a known coating method or printing method such as screen printing, and drying.

In order to actually perform transfer using the matte transfer foil of the present invention and give a matte appearance to the object to be transferred, as shown in FIG. By overlaying the matte transfer foil 1 on the substrate, heating or pressurizing as necessary, and then peeling off the base sheet 2, the surface of the matte resin layer 3 on the base sheet 2 side appears on the surface of the transfer target 9. Take it out,
The surface of the transfer target 9 has a matte appearance.

The matte transfer foil of the present invention can be used for molding simultaneous transfer, which performs transfer at the same time as injection molding, thermal transfer such as hot stamping,
Various transfer methods can be used, such as solvent activated transfer. In addition, various materials such as paper, plastic, and metal can be used as the object to be transferred, and the present invention can be applied to objects in various shapes such as a sheet, a plate, a three-dimensional shape, and a molded product. In particular, when applying matte paint directly to the transfer target, materials that have difficulty absorbing the paint and forming a matte resin layer (
For example, paper, etc.), and materials that have low heat resistance, solvent resistance, etc. and are easily damaged by solvents and heat during coating film formation (plastics such as polyvinyl chloride, acrylic, ABS, etc.) are optimal.

Next, the present invention will be explained in more detail with reference to specific examples. Example 1 A coated matte PET film (manufactured by Kimoto Co., Ltd.: Release Mat 1017-6) with a thickness of 25 μm was used as a base sheet, and 100 weight of binder resin (manufactured by Showa Ink Kogyo Co., Ltd.: Suede Medium No. 2) was applied to the surface of the film. Suede ink (made by adding 250 parts of bead pigment (manufactured by Dainichiseika Chemical Industry Co., Ltd.: Rag Color 020) to
Made by Showa Ink Kogyo: Suede Ink No. 2) was applied by die coating so that the coating amount was 25 g/m2 when dry to form a matte resin layer. Next, an adhesive ((manufactured by Showa Ink Industries: HS-S) was applied to the surface of the resin layer.
W) is die-coated with a coating amount of 25g/m2 when dry.
A matte transfer foil was obtained by applying an adhesive layer to obtain a matte transfer foil. When the obtained transfer foil was roll-transferred to a PS molded product base material, a suede-like PS molded product was obtained which had excellent foil cutting properties, good processability, and excellent surface properties and design properties.

Example 2 The applied amount of the suede-like paint of Example 1 was 10 g when dry.
Example 1 except that it was coated and formed so that it was /m2.
A matte transfer foil was formed in the same manner as above and transferred to the PS molded body base material. As a result, a suede-like molded product was obtained which was even more excellent in foil cutting properties than in Example 1, and also had excellent surface properties and design properties as in Example 1.

Example 3 Coating matte PET with a thickness of 38 μm on the base sheet
Film (manufactured by Kimoto Co., Ltd.: Release mat No. 8)
A matte transfer foil was formed using the same material as in Example 1, except that the same material as in Example 1 was used, and the painting transfer was performed at the same time as injection molding. As a result, a molded product having excellent workability, surface properties, and design was obtained as in Example 1.

Example 4 Using the transfer foil obtained in Example 3, vacuum forming and simultaneous transfer were performed on a PS molded body base material. As a result, a molded product with excellent workability, surface properties, and design was obtained.

[0033]

Effects of the Invention As explained above, in the matte transfer foil of the present invention, the matte resin layer binds the bead pigment to 10% of the binder resin.
By adopting a structure in which the content is 170 to 300 parts by weight relative to 0 parts by weight, the surface of the matte resin layer has excellent scratch resistance, and the foil can be easily cut, resulting in workability. It has the effect of producing a matte transfer foil with excellent processability. In addition, the coating amount of the matte resin layer is 10 when dry.
When it is formed in the range of ~30 g/m2, the transfer layer has the effect of improving foil breakage and imparting a beautiful matte design to the surface of the object to be transferred.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the matte transfer foil of the present invention.

FIG. 2 is a vertical cross-sectional view showing one example of a base sheet.

FIG. 3 is an explanatory diagram showing a case where transfer is performed using the matte transfer foil of the present invention.

[Explanation of symbols]

1 Matte transfer foil 2 Base sheet 3 Matte resin layer 31 Bead pigment 32 Binder resin

Claims (2)

[Claims] 1. A transfer foil comprising a matte resin layer made of a binder resin and bead pigments laminated on the surface of a releasable base sheet, wherein the matte resin layer contains the bead pigments in an amount of 100 parts by weight of the binder resin. 170-300 for
A matte transfer foil characterized in that it is formed so as to contain parts by weight. [Claim 2] The coating amount of the matte resin layer is 10 when dry.
The matte transfer foil according to claim 1, wherein the matte transfer foil has a weight of 30 g/m2.