JP2001150880A - Transfer method and cosmetic material - Google Patents

Abstract

(57) [Problem] To improve the transferability so that the transfer layer can be transferred at a lower temperature by improving the adhesion of the transfer layer when lapping transfer is performed by providing a urethane-based adhesive layer on a wooden base material or the like. Let it. Also, blocking of the transfer sheet does not occur. SOLUTION: A transfer sheet S having a decorative layer 3 and an acrylic / styrene-based adhesive layer 4 as a transfer layer 2 on a support sheet 1 is prepared. On the other hand, the transfer sheet S is provided on two or more side surfaces of a columnar base material. With the transfer layer facing the columnar base material side, through a urethane-based adhesive layer of a curable urethane resin in between, a plurality of pressing rollers sequentially press each side of each side to perform initial bonding, and a urethane-based adhesive layer Is completed, and the transfer layer is finally bonded. The support sheet peels off after the initial bonding or after the final bonding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transferring a wrapping transfer using a polyurethane resin adhesive, in particular, to a good transfer to a columnar substrate such as a wood-based resin, and a resulting cosmetic. About materials.

[0002]

2. Description of the Related Art Conventionally, as a transfer method when the surface to be transferred is non-planar, for example, Japanese Patent Application Laid-Open No. Hei 5-330013 discloses a two-component curable urethane resin-based resin on a plurality of side surfaces of a wooden columnar base material. A so-called lapping transfer technique has been proposed in which an adhesive is applied, and a transfer sheet is sequentially pressed and transferred onto each side surface by a plurality of pressing rollers. that time,
If the initial bonding between the transfer layer of the transfer sheet and the adhesive layer on the columnar substrate is insufficient, the transfer sheet will float from the adhesive layer due to restoring force before the adhesive is completely cured. Transfer failure occurs. In order to improve this, an adhesive layer may be provided on the transfer sheet side in some cases.

In the case where the transfer object is a wood-based material, vinyl chloride-vinyl acetate copolymer resin and polyamide resin are used as the resin of the adhesive layer provided as the transfer layer of the transfer sheet. Has been done conventionally. For example, Japanese Patent Publication No. 7-436 proposes using a polyamide resin for the adhesive layer, and Japanese Utility Model Publication No. 59-14216 uses a vinyl acetate resin and a vinyl chloride resin for the adhesive layer. Suggesting things.

[0004]

However, in the case of lapping transfer in which a polyurethane-based resin adhesive layer is provided on the column-shaped base material side, if a polyamide-based resin is used as the resin of the adhesive layer on the transfer layer side, the column-shaped base material is not used. It did not adhere well to the urethane-based adhesive layer on the side, and transferability, particularly at low temperatures, was not sufficient, and stable transfer was not possible. On the other hand, when a vinyl chloride-vinyl acetate copolymer-based resin is used as the resin of the adhesive layer provided in the transfer layer, the transfer sheet can be obtained with good low-temperature transferability but poor drying property and insufficient solvent drying. If the transfer sheet is wound up or stacked, a defect that the transfer sheet adheres between layers, that is, blocking easily occurs.

[0005] Therefore, an object of the present invention is to provide an excellent transfer property when a wood-based columnar base material is coated with a polyurethane-based resin adhesive and subjected to lapping transfer, and can prevent blocking from occurring on a transfer sheet to be used. It is an object of the present invention to provide a transfer method and the resulting decorative material.

[0006]

Therefore, in order to solve the above problems, in the transfer method of the present invention, at least a decorative layer and an adhesive layer are sequentially laminated as a transfer layer on a support sheet having releasability. As a transfer sheet, a transfer sheet in which the adhesive layer is made of an acrylic / styrene-based resin is prepared. On the other hand, on at least two or more side surfaces of the columnar substrate, the transfer sheet is oriented such that the transfer layer faces the columnar substrate side. Then, through a urethane-based adhesive layer of a curable urethane resin in between, using a plurality of pressing rollers, sequentially press-bond each side surface, and perform initial bonding, and thereafter, the curing reaction of the urethane-based adhesive layer Was completed and the transfer layer was finally bonded, and after the initial bonding or after the final bonding, the support sheet was peeled off.

[0007] By performing the transfer in this manner, the adhesion of the transfer layer to the urethane-based adhesive layer provided on the side of the substrate to be transferred is improved, and especially the transferability at low temperatures is improved. The transfer layer does not float together with the transfer sheet from the columnar base material before peeling, so that the transfer can be performed stably. Moreover, the transfer sheet used is easy to use without occurrence of blocking.
Even when the urethane-based adhesive layer is provided on the transfer layer side, the adhesion between the transfer layer and the urethane-based adhesive layer is improved.

Further, in the transfer method of the present invention, in the above transfer method, the pressing roller is an embossing roller having a surface having reverse irregularities in the same shape as a desired uneven pattern. At the same time as the pressure bonding, an uneven pattern was embossed on at least the transfer layer.

In this manner, the concavo-convex pattern can be formed by embossing on the transfer layer or on both the transfer layer and the urethane-based adhesive layer through the support sheet simultaneously with the pressing by the pressing roller. .

[0010] The decorative material of the present invention is formed by sequentially laminating a crosslinked and cured urethane-based adhesive layer, an acrylic / styrene-based adhesive layer, and a decorative layer on at least two or more side surfaces of a columnar substrate. And With such a configuration, a decorative material can be obtained by the above-described transfer method of the present invention, so that the advantages of the above-described transfer method can be enjoyed and the decorative material can be easily manufactured.

In addition, the decorative material of the present invention has a structure in which a surface protective layer is further laminated on a decorative layer in addition to the above structure. As a result, a cosmetic material having excellent surface properties such as scratch resistance is obtained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a transfer method and a decorative material according to the present invention will be described with reference to the drawings.

[Outline of Transfer Sheet] First, FIG. 1 is a sectional view showing an example of a transfer sheet used in the present invention.
The transfer sheet S has at least a decorative layer 3 and an acrylic-styrene-based adhesive layer 4 made of an acrylic-styrene-based resin as a transfer layer 2 on a support sheet 1. The support sheet 1 may be provided with a concavo-convex pattern shaping layer 1b or a release layer on the transfer layer side, for example, as a component thereof, as in the transfer sheet S illustrated in FIG. on the other hand,
As the transfer layer 2, a release layer 5 or the like may be provided. In addition,
As illustrated in FIG. 2, the decorative layer 3 often uses a pattern pattern layer 3a partially formed for expressing a pattern pattern and an all solid layer 3b for expressing an all solid pattern. .

[Support Sheet] The support sheet 1 is not particularly limited as long as it has good releasability from a transfer layer which is supported on the sheet until transfer, and can be selected from conventionally known ones. It should just be selected according to. For example, the support sheet may be a thermoplastic polyester resin such as polyethylene terephthalate, polybutylene terephthalate, ethylene-terephthalate-isophthalate copolymer, polyester-based thermoplastic elastomer, polypropylene, polyethylene, polymethylpentene, ethylene-propylene copolymer. Copolymer, ethylene-propylene-butene terpolymer, polyolefin-based resin such as olefin-based thermoplastic elastomer, vinyl chloride resin, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, acrylic resin, polyamide resin, etc. Resin film (sheet),
Alternatively, a monolayer or a laminate of coated paper, glassine paper, parchment paper, or the like obtained by laminating a release layer of a polyolefin resin or a silicone resin on high-quality paper, thin paper, or the like is used. The thickness of the support sheet is usually about 20 to 200 μm.

The support sheet may be provided with a release layer as a component of the support sheet, if necessary, on the transfer layer side in order to improve the releasability from the transfer layer. As the release layer, for example, a simple substance such as a silicone resin, a melamine resin, a polyamide resin, a urethane resin, a polyolefin resin, a wax, or a mixture containing these is used. Specifically, for example, a resin in which paratoluenesulfonic acid is preferably added to a mixed resin of a polyester resin and a melamine resin is preferable. In order to adjust the releasability, the surface of the support sheet on the transfer layer side may be subjected to corona discharge treatment, ozone treatment, or the like.

Further, the release layer is partially provided by embossing and printing by silk screen printing or the like, and the surface of the support sheet on the transfer layer side is made uneven, or the surface of the release layer itself is made uneven. Alternatively, it may be an irregular pattern shaping layer (see reference numeral 1b in FIG. 2). If an irregular pattern is formed on the transfer layer side surface of the support sheet by providing an uneven pattern shaping layer or embossing the support sheet itself, the transfer layer surface after transfer has a grain, pear, or wood grain. (Conduit pattern etc.) can be formed. In order to make the surface of the release layer uneven, the uneven surface may be formed by a known method such as embossing or sandblasting.

[Decoration Layer] The decoration layer 3 is not particularly limited. A conventionally known one may be used. For example, the decoration layer is a conventionally known method such as gravure printing, silk screen printing, offset printing, ink jet printing, a picture layer printed with a picture or the like with a material, a known vapor deposition of a metal such as aluminum, chromium, gold, or silver. It is a metal thin film layer or the like formed partially or over the entire surface by using a method or the like, and is used according to the application. The pattern is, for example, wood pattern, stone pattern, cloth pattern,
Tile patterns, brick patterns, leather squeezing patterns, characters, geometric patterns, solid colors, etc. In addition, the ink for the picture layer is composed of a vehicle such as a binder, a coloring agent such as a pigment or a dye, and various additives appropriately added thereto, similarly to a general ink. As the resin of the binder, an acrylic resin, a vinyl chloride-vinyl acetate copolymer, a polyester resin, a cellulosic resin, a urethane resin, or the like, or a mixture containing them is used. Examples of the coloring agent include inorganic pigments such as titanium white, carbon black, red iron oxide, graphite, and ultramarine blue; organic pigments such as aniline black, quinacridone, isoindolinone, and phthalocyanine blue; aluminum foil powder; and titanium dioxide-coated mica foil powder. And other bright pigments or other dyes.

[Acrylic / Styrene Adhesive Layer] The acryl / styrene adhesive layer 4 is an adhesive layer formed of an acryl / styrene resin and is a component of the transfer layer 2. Particularly, in the present invention, by using an acrylic / styrene-based resin for the adhesive layer, the transfer layer is brought into close contact with the urethane-based adhesive layer applied to the columnar substrate side (particularly, initial adhesion).
And the transferability, especially at low temperatures, is improved and stable transfer can be achieved. Moreover, by using the specific resin for the adhesive layer on the transfer layer side, there is no occurrence of blocking when the transfer sheet is stored.

The acrylic / styrene resin is a resin composed of an acrylic / styrene copolymer which is a copolymer of an acrylic monomer and a styrene monomer. Examples of the acrylic monomer include methyl (meth) acrylate,
Ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, (meth) acrylic acid
(Meth) acrylic acid esters such as 2-hydroxyethyl or acrylonitrile.

The acryl-styrene copolymer preferably has a glass transition temperature of 50 to 100 ° C. and a weight average molecular weight of about 30,000 to 90,000 from the viewpoint of adhesiveness. If the glass transition temperature is too low, the heat resistance of the adhesiveness of the transfer layer after transfer decreases, and if the glass transition temperature is too high, the initial adhesion (especially at a low temperature) becomes insufficient, and the transferability decreases, and the transfer layer decreases. Are not sufficiently adhered to each other, and transfer failure is likely to occur. On the other hand, if the mass average molecular weight is too small, the viscosity at the time of softening by heating becomes too low, so that the transfer layer becomes difficult to be heat-fused. Conversely, if the mass average molecular weight is too high, the viscosity at the time of softening by heating becomes too high. It becomes difficult to wear.

The thickness of the acrylic / styrene adhesive layer is not particularly limited, but is usually about 1 to 20 μm. In addition,
The adhesive layer may be formed by a known coating method such as roll coating or gravure printing or a printing method.

[Release Layer] As the transfer layer 2, FIG.
As described in the transfer sheet S, the release layer 5 may be provided so as to be in contact with the support sheet as needed. The release layer is used to adjust the releasability between the support sheet and the transfer layer, and to protect the surface of the transfer layer after transfer, and to apply a surface protective layer on the transfer layer after transfer. Provided to improve suitability. For the release layer, for example, a resin or the like used as a binder of the picture layer ink is used. The release layer is formed by a conventionally known printing method or a coating method such as roll coating similarly to the decorative layer. This release layer is one component of the transfer layer,
At the time of transfer, it is transferred to the columnar substrate side as a part of the transfer layer, and covers the surface of the transfer layer.

[Pillar-shaped substrate] In the present invention, the pillar-shaped substrate B is a substrate of various materials such as wood, metal, ceramics, resin, and non-ceramic ceramic materials, and the transfer layer can be transferred by a lapping transfer method. A columnar substrate having a cross-sectional shape may be used, and its material and cross-sectional shape are not particularly limited. For example, the cross-sectional shape is a convex polygonal shape, a concave polygonal shape, a circular shape, an oval shape, a square shape, or the like. One form of a rectangular cross section is a plate material. In the plate material in the lapping transfer method, at least one other side surface is also a transfer surface in addition to the main plane (the surface having the largest area, which is also one side surface). In addition, as a wood material among materials used for the columnar base material, its wood type is, for example, cedar, pine,
Cypress, oak, lauan, teak, melapy etc. The form of the columnar base material is a veneer, a plywood, a wood fiber board such as a wood medium density fiber board (MDF), a particle board, a laminated wood, and the like.
Examples of the metal include iron, iron alloys such as carbon steel and stainless steel, aluminum, aluminum alloys such as duralumin, copper, and titanium. Ceramics include pottery, porcelain, glass, enamel and the like. As resin,
Vinyl chloride resin, polyolefin resin, phenol resin and the like. Non-ceramic ceramic materials include cement, pulp cement, ALC (lightweight cellular concrete), GRC (glass fiber reinforced concrete), calcium silicate, and the like. In addition, the columnar base material, if necessary,
Prior to applying the urethane-based adhesive layer, known sealing treatment, sealer treatment, coloring coating treatment, and the like may be performed.

[Urethane-Based Adhesive Layer] The urethane-based adhesive layer A is formed by applying a urethane-based adhesive to the transfer surface of the columnar base material B before the transfer sheet is brought into contact with the columnar base material. It is a layer and is formed using a curable urethane resin. Of course, when the transfer sheet comes into contact with the urethane-based adhesive layer, the curing of the urethane-based adhesive layer is not completed. Note that this urethane-based adhesive layer may be formed on the acrylic / styrene-based adhesive layer of the transfer sheet. Even in this case, the adhesion between the transfer layer and the urethane-based adhesive layer is improved.

As the curable urethane resin used for the urethane-based adhesive layer, a two-component curable urethane resin or
A liquid moisture-curable urethane resin or the like can be used.

The two-component curable urethane resin is a urethane resin containing polyol as a main component and isocyanate as a crosslinking agent (curing agent). The polyol has two or more hydroxyl groups in the molecule, and examples thereof include polyethylene glycol, polypropylene glycol, acrylic polyol, polyester polyol, polyether polyol, polycarbonate polyol, and polyurethane polyol. As the isocyanate, a polyvalent isocyanate having two or more isocyanate groups in a molecule is used. For example, 2,4-tolylene diisocyanate, xylene diisocyanate, 4,
Aromatic isocyanates such as 4'-diphenylmethane diisocyanate, or aliphatic (or cycloaliphatic) isocyanates such as 1,6-hexamethylene diisocyanate, isophorone diisocyanate, hydrogenated tolylene diisocyanate, hydrogenated diphenylmethane diisocyanate, or Adducts of the above various isocyanates,
Alternatively, a multimer can be used. For example, there are an adduct of tolylene diisocyanate and a trimer of tolylene diisocyanate.

Alternatively, these isocyanates may be used as blocked isocyanates, and the reaction may be started by releasing the blocks by the heat during transfer. The blocked isocyanate is a compound in which the isocyanate is temporarily reacted with a blocking agent such as alcohols, phenols, and amines to prevent (block) the reactivity of the isocyanate group. Usually, in order to lower the dissociation temperature of the blocking agent to an appropriate temperature range, a known dissociation catalyst such as a metal soap or an amine is used.

The one-component moisture-curable urethane resin is a composition containing a prepolymer having an isocyanate group at a molecular terminal as an essential component. The prepolymer is
Usually, it is a polyisocyanate prepolymer having one or more isocyanate groups at both ends of the molecule, and is a solid thermoplastic resin at ordinary temperature. The isocyanate groups react with each other due to moisture in the air to cause a chain extension reaction. As a result, a reactant having a urea bond in the molecular chain is generated, and the isocyanate group at the molecular end further reacts with the urea bond. , Causing biuret bonding and branching,
Causes a cross-linking reaction. The skeleton structure of the molecular chain of the prepolymer having an isocyanate group at the molecular terminal is arbitrary, and specific examples include a polyurethane skeleton having a urethane bond, a polyester skeleton having an ester bond, and a polybutadiene skeleton. One or more of these skeletal structures are appropriately employed. When a urethane bond is present in the molecular chain, the terminal isocyanate group also reacts with the urethane bond to generate an allophanate bond, which also causes a cross-linking reaction.

Incidentally, the urethane-based adhesive layer A is
May be formed by a known coating method such as roll coating or spray coating. The thickness of the urethane-based adhesive layer is not particularly limited, but is usually about 5 to 100 μm.

[Lapping Transfer] After laminating the transfer sheet on the columnar substrate, the support sheet is peeled off and the transfer layer is transferred to the columnar substrate by a so-called lapping transfer method. That is, at least two or more side surfaces of the columnar substrate,
This is a transfer method in which the transfer sheet is pressed in order on each side surface by using a plurality of pressing rollers so that the transfer layer faces the columnar base material side, and the support sheet is peeled off after the initial bonding. JP-A-59-51900, JP-A-5-3300
No. 13, JP-B-3-2666, etc.).

At this time, in the transfer method according to the present invention, the transfer sheet is laminated and initially bonded to the columnar substrate through a urethane-based adhesive layer of a curable urethane resin between the columnar substrate and the transfer sheet. After that, the curing reaction of the urethane-based adhesive layer is completed, and the transfer layer is finally bonded. The support sheet may be peeled off after the initial bonding of the urethane-based adhesive layer or after the final bonding. However, from the viewpoint of productivity, it is preferably after the initial bonding (and before the final bonding). In this way, the curing reaction of the urethane-based adhesive layer can be completed in the state of a semi-finished product after the support sheet is peeled off, or the surface can be further transferred onto the transfer layer transferred after the support sheet is peeled off. When the protective layer is formed by coating, etc., the curing process of the urethane-based adhesive layer is completed by effectively utilizing the time of the subsequent process, thereby omitting a dedicated curing completion process for the urethane-based adhesive layer. Can also.

Here, the lapping transfer method will be described with reference to the conceptual view of FIG. 3 shown in a perspective view. In one embodiment of the lapping transfer method illustrated in FIG. 3, the transfer sheet S is pressed by pressing rollers (lapping rollers) 11a to 11d.
After sequentially pressing and laminating each of a plurality of sides requiring transfer of the columnar base material B, the adhesive force between the transfer layer and the columnar base material is sufficiently large that the support sheet can be separated at a distance. At the stage (initial bonding completion stage), the release rollers 12a to 12
This is a mode in which the support sheet is peeled off in step c. Of course, if the initial adhesion is obtained immediately after lamination by the pressing roller, the support sheet may be peeled off immediately after the pressure is released by using the pressing roller as a peeling roller. Further, the peeling of the support sheet may be performed manually.

In FIG. 3, the columnar base material B is placed on a plurality of feed rollers 13 and conveyed in the longitudinal direction (the direction of the arrow) of the columnar base material, and tuned to the conveying speed of the columnar base material. At this speed, the transfer sheet S is supplied to the columnar base material, and the stack of the transfer sheet on the two or more side surfaces of the columnar base material is substantially perpendicular to the longitudinal direction of the columnar base material by the pressing rollers 11a to 11d. Alternatively, it is performed stepwise for each small area in the direction perpendicular to the direction. In the figure, a plurality of side surfaces of the columnar substrate B to be transferred are:
Since the cross section formed by each side surface is a polygonal line shape, and each side surface forms a single plane, a dedicated cylindrical pressing roller is used for each side surface. Lamination of the transfer sheet on the columnar substrate by the pressing roller is performed by pressing the pressing roller 1.
By laminating the transfer sheets in the order of 1a, the pressing roller 11b, the pressing roller 11c, and the pressing roller 11d, the operation is performed for each side unit in order of small area with respect to the adjacent side surface.
In addition, for the pressing roller (or the peeling roller), only the portion provided on the front side of the drawing with respect to the columnar base material is shown for simplification of the drawing. Then, after the transfer sheet is laminated and the initial bonding is performed, in the same figure, if only the support sheet 1 of the transfer sheet S is peeled off by the peeling rollers 12a to 12c, the transfer layer 2 is removed.
Is completed for the time being.

As the pressing roller, a metal roller, a ceramic roller, or a rubber roller having a metal shaft core coated with rubber is usually used. The same applies to the peeling roller, but a metal roller having a metal surface is also used. The shape of the pressing roller is cylindrical as shown in FIG.
As described in Japanese Patent Application Laid-Open No. 1-5895, a roller whose side view shape matches the cross-sectional shape of the surface to be pressed may be used.

Further, by forming irregularities having the same shape and reverse irregularities as the desired irregular pattern on the surfaces of the pressing rollers 11a to 11d, the transfer layer, the transfer layer, Alternatively, an embossed pattern may be embossed on both the transfer layer and the urethane-based adhesive layer. The uneven pattern is a wood grain conduit groove, a grain, a hairline, and the like.

In the embodiment illustrated in FIG. 3, when the transfer sheet S is laminated on the columnar base material B, the support sheet is softened or the acrylic / styrene adhesive layer is heated and activated. Hot air,
Sheet preheating hood 1 using infrared radiation, dielectric heating, etc.
At 4, the transfer sheet S can be preheated immediately before being supplied to the pressing roller. In particular, when the pressing roller is also used as an embossing roller, it is preferable to perform such preheating in order to facilitate embossing of the uneven pattern. Similarly, when a transfer sheet is laminated on the columnar base material B, a urethane-based adhesive layer can be formed on the columnar base material,
Adhesive coating booth 15 consisting of a coating machine, hot air drying oven, etc.
(Details not shown) are provided immediately before the transfer sheet is laminated on the columnar substrate, a urethane-based adhesive layer is applied, and drying of the solvent in the adhesive layer and activation of the adhesive force are performed. Alternatively, preheating of the columnar substrate can be performed.

Then, after the transfer sheets are laminated, in the same figure, if only the support sheet 1 of the transfer sheet S is peeled off by the peeling rollers 12a to 12c, the transfer is temporarily completed. Thereafter, when the curing of the urethane-based adhesive layer is not completed, the curing reaction is completed by curing or the like, and the adhesive layer is turned into a crosslinked cured product.

[Cosmetic Material] The cosmetic material of the present invention is preferably
This is a decorative material that can be obtained by the transfer method using the lapping transfer method as described above. That is, as in the decorative material D shown in the cross-sectional view of FIG. 4, the urethane-based adhesive layer A crosslinked and cured, the acrylic / styrene-based adhesive layer 4, and the decorative layer 3 are formed on at least two or more side surfaces of the columnar base material B. Are sequentially laminated. Further, as in the decorative material D shown in the cross-sectional view of FIG. 5, a configuration in which the surface protective layer 6 is laminated on the decorative layer 3 may be adopted. In addition, since each layer in the decorative material D illustrated in FIG. 4 has already been described, the description is omitted here.

[Surface Protective Layer] The surface protective layer 6 is a colorless transparent or colored transparent layer which covers the decorative layer 3 which is preferably transferred and formed by a lapping transfer method. Provided as appropriate for protection of the decoration layer. There is no particular limitation on the resin used for the surface protective layer, for example, acrylic resin,
Fluororesin, polyester resin, urethane resin and the like are used alone or as a mixture. In the surface protective layer,
Benzotriazole-based, benzophenone-based ultraviolet absorbers, hindered amine-based radical scavengers and other light stabilizers, silica, lubricants consisting of particles such as spherical α-alumina, lubricants such as wax, coloring pigments, extender pigments, etc. You may make it contain. The surface protective layer is formed by a conventionally known coating method such as spray coating. The thickness of the surface protective layer is not particularly limited, but is usually about 1 to 100 μm.

[Uses of Articles According to the Invention] There are no particular restrictions on the uses of the transfer products obtained by the transfer method of the present invention and the articles of the present invention as decorative materials. For example, window frames, doors, handrails, thresholds, doors and other fittings, wall surfaces, ceilings, flooring and other building interior materials,
Exterior materials such as outer walls, fences, roofs, gates, gable boards, furniture such as chests, cabinets for light electric / OA equipment such as television receivers, interior materials for vehicles such as cars, trains, aircraft, and ships, and accessories. Used as a container.

[0041]

The present invention will now be described by way of Examples and Comparative Examples.
This will be described more specifically. In the text, "part" and "%"
All are based on mass.

Example 1 As a transfer sheet S as shown in FIG. 2, a support sheet material 1a made of a biaxially stretched polyethylene terephthalate film having a thickness of 25 .mu.m was formed on one side, and 100 parts of a mixed resin of a polyester resin and a melamine resin was used. On the other hand, an ink containing 4 parts of paratoluenesulfonic acid as a curing catalyst is gravure-printed to form an uneven pattern shaping layer 1b having a wood grain conduit pattern into a pattern, and a support sheet material 1a and an uneven pattern shaping layer are formed. 1b. Then, the surface of the support sheet 1 on the side of the concavo-convex pattern shaping layer 1b is gravure coated with an ink composed of a mixed resin of an acrylic resin and a vinyl chloride-vinyl acetate copolymer in a mass ratio of 1: 1. The release layer 5 is formed, and then, as the decorative layer 3, the binder resin is the same as the release layer,
The coloring pattern using isoindolinone, quinacridone and carbon black as a coloring agent is gravure-printed on the wood pattern pattern layer 3a. Subsequently, the binder resin is the same as the release layer, and titanium white, quinacridone are used as coloring agents. Then, the entire solid layer 3b was formed on the entire surface by gravure printing with a coloring ink using isoindolinone. Next, an acryl-styrene adhesive layer 4 was formed by applying a 10 g / m ² gravure coating agent of an acrylic-styrene copolymer having a glass transition temperature of 60 ° C. and a weight average molecular weight of 60,000. . Then, as shown in FIG. 2, a release layer 5, a pattern pattern layer 3 as a transfer layer 2 on a support sheet 1.
a transfer sheet S having a configuration in which a decorative layer 3 composed of a and a solid layer 3b and an acrylic / styrene-based adhesive layer 4 are laminated in this order.
Was prepared.

Next, the transfer sheet S was transferred to the columnar base material B by a lapping transfer method as shown in the conceptual view of FIG. MDF (woody medium density fiberboard) was used as the columnar substrate B. Immediately before laminating the transfer sheet on a plurality of side surfaces of the columnar base material to be transferred, a one-component moisture-curable urethane resin-based adhesive (thermoplastic solid in an uncured state. Nippon NSC Co., Ltd.) Made, 70-731
0) was applied at a coating temperature of 60 ° C. at 40 g / m ² to form a urethane-based adhesive layer.

Subsequently, the transfer sheet S was laminated on the urethane-based adhesive layer on the columnar substrate B by a pressing roller heated by coating the surface of the iron core with silicone rubber having a JIS hardness of 70 °. The transfer temperature (surface temperature of the pressing roller at the time of lamination) is from 120 ° C. to 22 ° C. as shown in Table 1.
The temperature was changed in steps of 20 ° C. to 0 ° C. Thereafter, the support sheet was peeled off by a peeling roller composed of an iron roller having a chrome-plated surface. As a result, a decorative material D of the present invention having a layer configuration as shown in FIG. 4 was obtained.

Further, in order to secure the surface properties and adjust the surface gloss, a two-component curable urethane resin-based coating solution was spray-coated to form a surface protective layer on the entire surface. As a result, a decorative material D of the present invention having a layer configuration as shown in FIG. 5 was obtained.

Comparative Example 1 In Example 1, the vinyl chloride-vinyl acetate copolymer was used as the adhesive resin for the acrylic / styrene adhesive layer 4 as the adhesive layer of the transfer layer. A transfer sheet was produced in the same manner as in Example 1 except for the above. Then, in the same manner as in Example 1, production of a decorative material by lapping transfer was attempted.

Comparative Example 2 The procedure of Example 1 was repeated, except that the adhesive resin used for the acrylic / styrene-based adhesive layer 4 as the adhesive layer of the transfer layer was changed to a polyamide resin. In the same manner as in Example 1, a transfer sheet was prepared. Then, in the same manner as in Example 1, production of a decorative material by lapping transfer was attempted.

[Evaluation of Performance] The anti-blocking property and the transfer property (adhesion of the transfer layer to the columnar substrate after peeling the support sheet) in the state of the transfer sheet were evaluated as follows. The evaluation results are shown in Table 1.

Blocking resistance: Two test pieces obtained by cutting a transfer sheet into squares of 5 cm each in length and width were placed such that the acrylic-styrene adhesive layer of one transfer layer was in contact with the other support sheet. Stack them on a horizontal surface. Then, after applying a load by a weight of 2 kg to the entire surface of the test piece, the test piece is left in an oven at 40 ° C. for 3 days. Then, it cools to room temperature 20 degreeC, unloads, and peels off two test pieces. Then, it was visually confirmed whether or not the transfer layer was transferred (blocked) to the support sheet of the other test piece. A sample without any blocking was good “O”, and one with some blocking was bad “X”.
And

Transferability: With respect to the transferred material (product before forming the surface protective layer) transferred at each transfer temperature, the adhesion of the transfer layer to the columnar substrate was evaluated by a cellophane tape adhesion test. That is, a cellophane adhesive tape ("Cellotape" (registered trademark) 2 manufactured by Nichiban Co., Ltd.) is applied to the surface of the transfer layer after the transfer.
(4 mm width, industrial use), the surface of the tape is rubbed with nails, and then the cellophane adhesive tape is peeled off at a room temperature of 20 ° C. at an angle of 90 ° with respect to the applied surface.
Then, those with no peeling of the transfer layer were evaluated as good (○), those with some peeling of the transfer layer were evaluated as good (△), and those with large peeling of the transfer layer were evaluated as poor (x). In addition, those in which all the transfer layers were peeled off and did not adhere to each other were evaluated as “xx”.

[0051]

[Table 1]

As shown in Table 1, the anti-blocking property was determined in Comparative Example 1 using a vinyl chloride-vinyl acetate copolymer for the adhesive layer.
Although it is inferior, Example 1 using an acrylic-styrene copolymer for the adhesive layer and Comparative Example 2 using a polyamide resin are good. However, the transferability of Comparative Example 2 cannot be improved unless the transfer temperature is 200 ° C. or higher. On the other hand, in Example 1, even if the transfer temperature was lowered to 180 ° C., there was slight peeling, but almost good, and transferability equivalent to that of Comparative Example 1 using a vinyl chloride-vinyl acetate copolymer was obtained. This indicates that Example 1 has better transferability at a low temperature than Comparative Example 2.

[0053]

According to the transfer method of the present invention, the adhesion of the transfer layer to the urethane-based adhesive layer provided on the transfer-receiving substrate side is improved, and the transferability, especially at low temperatures, is improved and stable. And transfer it. Moreover, the transfer sheet used is easy to use without occurrence of blocking. Even when the urethane-based adhesive layer is provided on the transfer layer side, the adhesion between the transfer layer and the urethane-based adhesive layer is improved. Furthermore, if the surface of the pressing roller is used as an embossing roller with unevenness, the unevenness pattern can be formed on the transfer layer through the support sheet simultaneously with the pressing by the pressing roller. According to the decorative material of the present invention, since it can be obtained by using the above-described transfer method, the advantages of the above-described transfer method can be enjoyed. Further, if the decorative material has a configuration in which a surface protective layer is provided on the decorative layer, the decorative material has excellent surface physical properties such as scratch resistance.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a transfer sheet that can be used in the transfer method of the present invention.

FIG. 2 is a cross-sectional view showing another example of a transfer sheet that can be used in the transfer method of the present invention.

FIG. 3 is a conceptual diagram conceptually illustrating the transfer method (lapping transfer method) of the present invention in one embodiment.

FIG. 4 is a cross-sectional view showing one embodiment of the cosmetic material of the present invention.

FIG. 5 is a sectional view showing another embodiment of the decorative material of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support sheet 1a Support sheet material 1b Concavo-convex pattern shaping layer 2 Transfer layer 3 Decoration layer 3a Pattern pattern layer 3b All solid layer 4 Adhesive layer (acrylic-styrene adhesive layer) 5 Release layer 6 Surface protection layer 11a 11d Press roller 12a to 12c Peeling roller 13 Feed roller 14 Sheet preheating hood 15 Adhesive coating booth A Adhesive layer (urethane-based adhesive layer) B Columnar substrate D Cosmetic material S Transfer sheet

Continued on the front page F term (reference) 3B005 EA06 FG02Z FG08Z FG09Z GA12 GA18 GC03 GD05 4F100 AA21H AH02A AH04A AH04H AH07H AH08H AK12B AK12J AK25B AK25G AK25J AK36A02ABACBAKBAABACBACBAC HB00A HB01A HB21A JK06 JK20 JL00D JL11B

Claims (4)

[Claims] 1. An acrylic / styrene-based transfer sheet in which at least a decorative layer and an adhesive layer are sequentially laminated as a transfer layer on a supportable sheet having releasability, wherein the adhesive layer is made of an acrylic / styrene-based resin. A transfer sheet as an adhesive layer is prepared. On the other hand, on at least two or more side faces of the columnar base material, the transfer sheet is oriented such that the transfer layer faces the columnar base material side. Using a plurality of pressing rollers via the adhesive layer, pressure bonding is sequentially performed on each side, and the initial bonding is performed. Thereafter, the curing reaction of the urethane-based adhesive layer is completed, and the transfer layer is finally bonded, Then, a transfer method of peeling the support sheet after the initial bonding or the final bonding. 2. The pressing roller is an embossing roller having a surface having the same irregularities as the desired concavo-convex pattern, and the concavo-convex pattern is embossed on at least the transfer layer simultaneously with the pressing by the pressing roller. The transfer method according to claim 1. 3. A decorative material obtained by sequentially laminating a crosslinked and cured urethane-based adhesive layer, an acrylic / styrene-based adhesive layer, and a decorative layer on at least two or more side surfaces of a columnar substrate. 4. The decorative material according to claim 3, wherein a surface protective layer is further laminated on the decorative layer.