JP2000158895A - Method for transferring curved surface and decorative material - Google Patents

Method for transferring curved surface and decorative material

Info

Publication number
JP2000158895A
JP2000158895A JP10337027A JP33702798A JP2000158895A JP 2000158895 A JP2000158895 A JP 2000158895A JP 10337027 A JP10337027 A JP 10337027A JP 33702798 A JP33702798 A JP 33702798A JP 2000158895 A JP2000158895 A JP 2000158895A
Authority
JP
Japan
Prior art keywords
transfer
adhesive
layer
transferred
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP10337027A
Other languages
Japanese (ja)
Inventor
Haruo Ono
晴男 大野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP10337027A priority Critical patent/JP2000158895A/en
Publication of JP2000158895A publication Critical patent/JP2000158895A/en
Withdrawn legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To effectively transfer a protrusion and recess surface and to further upgrade its after coating suitability. SOLUTION: In the method for transferring a curved surface comprising the steps of colliding solid particles to a support sheet side of a transfer sheet S through an adhesive A at a base material B to be transferred having a protrusion and recess shape on its surface, allowing the transfer sheet to follow to the uneven shape of the base material by its collision pressure, adhering the transfer layer to the base material, and then releasing to remove the support sheet, as the adhesive, an acrylic adhesive made of an acrylic resin having a weight-average molecular weight of 100,000 or above at 20 deg.C or below of a glass transition temperature is used. The adhesive is used as a two-liquid curable type containing a curing agent. The decorative material is manufactured by the method or the like. After transferring, it is preferable to after coat the material.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、住宅の外装及び内
装材等の各種用途に用いる凹凸装飾面を有する化粧材等
の転写製品の製造に適した曲面転写方法と、その化粧材
に関する。特に、凹凸表面に確実に転写でき、更に後塗
装適性にも優れた転写製品が得られる曲面転写方法と、
その結果得られる様な如き化粧材に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved surface transfer method suitable for manufacturing a transfer product such as a decorative material having a concave-convex decorative surface used for various uses such as exterior and interior materials of a house, and a decorative material thereof. In particular, a curved surface transfer method that can reliably transfer to uneven surfaces and obtain a transfer product excellent in post-coating suitability,
It relates to a cosmetic material as obtained as a result.

【0002】[0002]

【従来の技術】従来から、転写法で被転写基材を装飾し
た化粧板等の転写製品が各種用途で使用されている。こ
の場合、装飾面が平面ならば転写は容易だが、装飾面が
凹凸形状の凹凸表面に対しては格別の工夫を行ってい
た。例えば、三次元的凹凸形状(すなわち、半球面の様
に2方向に曲率を有する形状)の被転写面への曲面転写
方法が、特開平5−139097号公報に提案されてい
る。すなわち、同号公報は、ローラ転写法の一種であ
り、熱可塑性樹脂フィルムからなる支持体シートに、転
写層として剥離層、絵柄層及び接着剤層を順次設けた構
成の転写シートを、表面に凹凸形状を有する被転写基材
上に設置し、支持体シートの裏面から、ゴム硬度60°
以下としたゴム製の熱ローラで押圧する事で、凹凸表面
に絵柄を転写して化粧板とする。
2. Description of the Related Art Conventionally, transfer products such as decorative boards on which a substrate to be transferred has been decorated by a transfer method have been used for various purposes. In this case, the transfer is easy if the decorative surface is flat, but special measures have been taken for the uneven surface with the uneven decorative surface. For example, a method for transferring a three-dimensional uneven shape (that is, a shape having a curvature in two directions like a hemispherical surface) to a transfer surface is proposed in Japanese Patent Application Laid-Open No. Hei 5-139097. That is, the same publication is a type of roller transfer method, in which a transfer sheet having a structure in which a release layer, a pattern layer, and an adhesive layer are sequentially provided as a transfer layer on a support sheet made of a thermoplastic resin film is formed on the surface. It is installed on a transfer substrate having irregularities, and has a rubber hardness of 60 ° from the back surface of the support sheet.
By pressing with a rubber heat roller described below, the pattern is transferred to the uneven surface to make a decorative plate.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記の
様なローラ転写法による従来方法では、基本的に回転す
る熱ローラのゴムによる弾性変形を利用して、転写シー
トを表面凹凸形状に追従させる為に、浅いエンボス形状
等は良いとしても、大きな表面凹凸形状には適用でき
ず、転写シートの凹凸追従性が悪い。また、転写速度も
上げられず生産性も悪い。その上、被転写基材の凹凸の
隅角部によって軟質のゴムローラが損耗し易い。また、
全体として平板状の基材に限定されるといった問題があ
った。
However, in the conventional method based on the roller transfer method as described above, the transfer sheet basically follows the uneven shape of the surface by utilizing the elastic deformation of the rotating heat roller by rubber. Even if a shallow embossed shape or the like is good, it cannot be applied to a large surface irregularity shape, and the transfer sheet has poor irregularity followability. Further, the transfer speed cannot be increased, and the productivity is poor. In addition, the soft rubber roller is liable to be worn by the corners of the unevenness of the transfer-receiving substrate. Also,
There has been a problem that the substrate is limited to a flat substrate as a whole.

【0004】この様なこともあって、本出願人は、既に
特開平9−315095号公報に開示された如く、転写
圧として固体粒子衝突圧を利用した曲面転写方法を提案
した。すなわち、表面が凹凸形状の凹凸表面を有する被
転写基材の凹凸表面側に、支持体シートと転写層とから
なる転写シートの転写層側を対向させ、該転写シートの
支持体側に固体粒子を衝突させ、その衝突圧を利用し
て、被転写基材の凹凸表面への転写シートの圧接を行
い、転写層が被転写基材に接着後、転写シートの支持体
シートを剥離除去することで、転写層を被転写基材に転
写する転写方法である。
[0004] In view of the above, the present applicant has proposed a curved surface transfer method using a solid particle collision pressure as a transfer pressure, as disclosed in Japanese Patent Application Laid-Open No. 9-315095. That is, the transfer layer side of the transfer sheet composed of the support sheet and the transfer layer is opposed to the uneven surface side of the transferred substrate having the uneven surface having the uneven surface, and the solid particles are formed on the support side of the transfer sheet. The transfer sheet is pressed against the uneven surface of the substrate to be transferred by using the collision pressure, and the transfer sheet is adhered to the substrate to be transferred, and then the support sheet of the transfer sheet is peeled off. And a transfer method for transferring a transfer layer to a substrate to be transferred.

【0005】[0005]

【発明が解決しようとする課題】ところが、上記固体粒
子衝突圧を利用する曲面転写方法は、従来の曲面転写方
法では不可能であった深い三次元的凹凸形状等にも適用
できる極めて優れた転写法であるが故に、一旦、転写シ
ートを被転写基材の表面凹凸形状に追従させた後に、転
写シート(の転写層)が被転写基材に十分な接着力で接
着した後に、転写圧を解放しないと、転写シートが元の
平面形状に戻ろうとして、被転写基材の凹部からから浮
き上がる事があった。これは、転写シートを凹凸表面形
状に追従させる(凹凸表面に接触させるという意味)凹
凸追従性は良好であるが、その後に転写シートを凹凸表
面に固定し繋ぎ止めておくという意味での凹凸形状への
「固定性」が不足している場合に発生する。この結果、
その部分では転写不良となる事があった。この様な事が
起こるのは、例えば、一般的なアクリル系樹脂(ガラス
転移温度=40℃程度)からなる接着剤を被転写基材の
凹凸表面にスプレー塗布して加熱乾燥して基材温度を通
常は80℃以上に加熱した後、固体粒子衝突圧による転
写を行う場合等に於いて、転写シートが被転写基材に接
触後、被転写基材及び転写シートの冷却が不十分の場合
等である。
However, the above-mentioned curved surface transfer method utilizing the solid particle collision pressure is an extremely excellent transfer method which can be applied to deep three-dimensional unevenness or the like which was impossible with the conventional curved surface transfer method. After the transfer sheet is once made to conform to the surface unevenness of the substrate to be transferred, the transfer sheet (the transfer layer) is adhered to the substrate to be transferred with a sufficient adhesive force. If the transfer sheet is not released, the transfer sheet may rise from the concave portion of the transfer-receiving substrate in an attempt to return to the original planar shape. This means that the transfer sheet follows the uneven surface shape (meaning that the transfer sheet comes into contact with the uneven surface). The unevenness followability is good, but after that, the transfer sheet is fixed to the uneven surface and fixed. Occurs when the "fixation" to the is insufficient. As a result,
In that part, transfer failure sometimes occurred. This occurs because, for example, an adhesive made of a general acrylic resin (glass transition temperature = about 40 ° C.) is spray-coated on the uneven surface of the transfer-receiving substrate, dried by heating, and heated at the substrate temperature. Is usually heated to 80 ° C. or higher, and in the case where transfer by solid particle collision pressure is performed, for example, when the transfer sheet comes into contact with the transfer base material, and when the transfer base material and the transfer sheet are insufficiently cooled. And so on.

【0006】ここで、凹凸追従性と凹凸固定性を図2の
概念図で説明する。先ず、同図(A)は、支持体シート
1と転写層2とからなる転写シートSが、その転写層2
を被転写基材B側に向けて被転写基材Bに対向した状態
である。そして、同図(B)が、転写シートの支持体シ
ート側に多数の固体粒子Pを衝突させて固体粒子衝突圧
を転写圧として与えて、転写シートSが間に接着剤
(層)Aを介して、被転写基材Bの凹凸表面に完全に接
触した状態である。この様に、転写すべき部分の表面凹
凸形状に完全に転写シートを追従させて、その凹凸表面
に完全に接触させる事ができるか否かが、「凹凸追従
性」である。しかし、同図(B)の状態の後に、固体粒
子衝突圧を解放時に(しかも支持体シートの剥離前の段
階で)、接着剤による転写シートと被転写基材との接着
力が十分に発現する前の状態であり、且つ転写シートに
被転写基材の凹部から浮き上がろうとする復元力がある
と、同図(C)の如く、被転写基材Bの凹部にて、転写
シートSがその転写層2と共に浮き上がる事があり、そ
の部分で転写層が転写されない転写不良となる。なお、
転写シートを浮き上がらせる復元力は、加熱軟化させて
転写圧で強制的に変形させられた支持体シートの残留応
力や弾性変形の反発力による。これに対して、固体粒子
衝突圧の解放時に、転写シートと被転写基材間の接着力
が十分に発現しているならば、転写シートがその復元力
によって浮き上がろうとしても、同図(D)の如く、そ
れは支持体シート1のみが浮き上がり、転写層2は被転
写基材Bに接着したままとなるので、転写不良は起きな
い。この様に、一旦、転写シートを被転写基材の凹凸表
面に接触させた後に、少なくとも転写層(或いは転写シ
ート全層)を該凹凸表面に接触したままで固定しておく
事ができか否かを、「凹凸固定性」と呼ぶ事にした。凹
凸追従性と、それに続き要求される凹凸固定性とが良好
な場合に、転写層は凹凸表面に確実に転写されて転写性
が良好となる。
Here, the following and the following are described with reference to a conceptual diagram of FIG. First, FIG. 1A shows that a transfer sheet S composed of a support sheet 1 and a transfer layer 2 is
Is directed toward the substrate to be transferred B and faces the substrate to be transferred B. FIG. 2B shows that a large number of solid particles P collide with the support sheet side of the transfer sheet to give a solid particle collision pressure as a transfer pressure, and the transfer sheet S applies the adhesive (layer) A therebetween. This is in a state of being completely in contact with the uneven surface of the transfer-receiving substrate B through the substrate. As described above, the “irregularity followability” is whether or not the transfer sheet can completely follow the surface irregularity shape of the portion to be transferred and completely contact the irregularity surface. However, after the state shown in FIG. 3B, when the solid particle collision pressure is released (and before the support sheet is peeled off), the adhesive force between the transfer sheet and the transfer-receiving substrate by the adhesive is sufficiently developed. In the state before the transfer, and when the transfer sheet has a restoring force to float up from the concave portion of the transfer-receiving substrate, as shown in FIG. May be lifted together with the transfer layer 2, resulting in a transfer failure where the transfer layer is not transferred. In addition,
The restoring force for lifting the transfer sheet is due to the residual stress of the support sheet that has been forcibly deformed by the transfer pressure by heating and softening, and the repulsive force of elastic deformation. On the other hand, if the adhesive force between the transfer sheet and the substrate to be transferred is sufficiently developed when the collision pressure of the solid particles is released, even if the transfer sheet tries to float due to its restoring force, the same figure is used. As shown in (D), only the support sheet 1 floats up, and the transfer layer 2 remains adhered to the base material B to be transferred, so that transfer failure does not occur. As described above, once the transfer sheet is brought into contact with the uneven surface of the substrate to be transferred, it is possible to fix at least the transfer layer (or the entire layer of the transfer sheet) in contact with the uneven surface. This is referred to as “unevenness fixability”. When the irregularity followability and the consequently required irregularity fixability are good, the transfer layer is reliably transferred to the uneven surface, and the transferability is improved.

【0007】この様に、凹凸追従性は満足するが凹凸固
定性を満足しない事が起きる理由は、一つには、転写温
度が接着剤の活性化温度に対して低目で、接着剤がその
接着力を充分に発揮していない為である。もちろん、転
写温度をより高めにすれば、接着剤から見た問題点は解
決するが、セメント等からなる無機系の被転写基材等
と、被転写基材の熱容量が大きい場合は、生産効率的に
も得策では無い。また、転写シートに用いる支持体シー
トの熱物性(成形性)によっても、転写温度には最適温
度範囲があり、あまりに高温には出来ない。可能なら
ば、転写温度は低めの方が生産性の点で好ましい。通
常、この問題を解決する為に先ず考えられる事は、転写
時の加熱温度でも十分な接着力が得られる様に、従来、
この種の分野で汎用されていたアクリル系接着剤より
も、接着剤をより低温で軟化させ、粘着性を発現出来る
ようにする事である。その為には、一般的にはアクリル
系接着剤のガラス転移温度と重量平均分子量を単に下げ
れば良いと考えられる。本願発明者に於いても、ガラス
転移温度を例えば0℃と下げた重量平均分子量5万のア
クリル系樹脂からなる接着剤を用いて、凹凸追従性と凹
凸固定性の両者を満たせる事はできた。
[0007] As described above, the reason why the irregularity following ability is satisfied but the irregularity fixing property is not satisfied may be because, for example, the transfer temperature is lower than the activation temperature of the adhesive, and the adhesive is not used. This is because the adhesive strength is not sufficiently exhibited. Of course, raising the transfer temperature will solve the problem from the viewpoint of the adhesive, but if the heat capacity of the inorganic transfer base material such as cement and the transfer base material is large, the production efficiency will increase. It is not a good idea. Also, depending on the thermophysical properties (moldability) of the support sheet used for the transfer sheet, the transfer temperature has an optimum temperature range and cannot be too high. If possible, a lower transfer temperature is preferred in terms of productivity. Usually, the first thing that can be considered to solve this problem is to use a conventional method so that sufficient adhesive strength can be obtained even at the heating temperature during transfer.
The purpose of the present invention is to soften the adhesive at a lower temperature than that of an acrylic adhesive widely used in this type of field so that the adhesive can exhibit tackiness. For that purpose, it is generally considered that the glass transition temperature and the weight average molecular weight of the acrylic adhesive may simply be lowered. The inventor of the present application was able to satisfy both the irregularity followability and the irregularity fixability by using an adhesive made of an acrylic resin having a weight-average molecular weight of 50,000 with the glass transition temperature lowered to, for example, 0 ° C. .

【0008】しかし、この様なガラス転移温度及び重量
平均分子量のアクリル系樹脂を用いた接着剤では、転写
後に更に上塗り層を施す為に、溶剤系や水系(特に溶剤
系)の塗料を塗装し熱乾燥すると、接着力が低下し、転
写層に膨れが発生する事が判明した。また、低いガラス
転移温度の樹脂を用いた接着剤では、化粧材等の転写製
品において、転写層の被転写基材に対する接着性の耐熱
性は望めない。
However, in the case of such an adhesive using an acrylic resin having a glass transition temperature and a weight average molecular weight, a solvent-based or water-based (particularly solvent-based) paint is applied in order to further apply an overcoat layer after transfer. It has been found that when heat dried, the adhesive strength is reduced and the transfer layer swells. Further, in the case of an adhesive using a resin having a low glass transition temperature, in a transfer product such as a decorative material, the heat resistance of adhesiveness of a transfer layer to a substrate to be transferred cannot be expected.

【0009】そこで、本発明の課題は、三次元的な大き
な凹凸形状の凹凸表面にも転写できる固体粒子衝突圧を
利用した曲面転写方法において、凹凸追従性と凹凸固定
性とが良好で、凹凸表面にも確実に転写でき、しかも後
塗装適性も良い転写製品が得られる曲面転写方法を提供
する事である。また、その結果、得られる様な如き化粧
材を提供する事である。
It is an object of the present invention to provide a method for transferring a curved surface using solid particle collision pressure which can be transferred to a three-dimensionally uneven surface having a large uneven shape. It is an object of the present invention to provide a method of transferring a curved surface which can transfer a product onto a surface without fail and which has good post-coating suitability. It is another object of the present invention to provide a cosmetic material as obtained as a result.

【0010】[0010]

【課題を解決するための手段】そこで、上記課題を解決
すべく、本発明の曲面転写方法では、表面に凹凸形状を
有する被転写基材に対して、接着剤を間に介して、離型
性を有する支持体シートに転写層として少なくとも装飾
層を有する転写シートの該支持体シート側に、固体粒子
を衝突させ、その衝突圧を利用して、転写シートを被転
写基材の凹凸形状に追従させ、転写層が被転写基材に接
着後、支持体シートを剥離除去することで、転写層を被
転写基材に転写する曲面転写方法において、上記接着剤
が、アクリル系樹脂からなるアクリル系接着剤であり、
且つ該アクリル系樹脂のガラス転移温度が20℃以下、
重量平均分子量が100,000以上である様にした。
この様な特定組成のアクリル系接着剤を使用する事で、
凹凸追従性と凹凸固定性とが良好で、凹凸表面へも確実
に転写できる転写性が得られる上に、後塗装時に接着剤
の溶解や膨潤で発生する転写層の膨れが無い、後塗装適
性に優れた転写製品が得られる様になる。
In order to solve the above-mentioned problems, a curved surface transfer method according to the present invention provides a method of releasing a substrate having an uneven shape on a surface thereof through an adhesive. A solid particle collides against the support sheet side of a transfer sheet having at least a decorative layer as a transfer layer on a support sheet having a property, and the transfer sheet is formed into an uneven shape of the base material to be transferred by using the collision pressure. After the transfer layer adheres to the transfer substrate, the support sheet is peeled off, and the transfer agent is transferred to the transfer substrate by the curved surface transfer method, wherein the adhesive is made of an acrylic resin. System adhesive,
And the glass transition temperature of the acrylic resin is 20 ° C. or less,
The weight average molecular weight was adjusted to be 100,000 or more.
By using acrylic adhesive of such specific composition,
Good irregularity followability and irregularity fixability, transferability that can be reliably transferred to uneven surfaces, and no swelling of the transfer layer caused by dissolution or swelling of the adhesive during post-coating, suitable for post-coating A transfer product excellent in quality can be obtained.

【0011】また、上記曲面転写方法において、好まし
くは、上記アクリル系接着剤は、硬化剤を含む2液硬化
型接着剤として、接着剤が少なくとも完全には硬化して
いない状態で、固体粒子衝突圧により転写シートを被転
写基材の被転写面に接触させ、転写層が接着剤で被転写
基材に接着後、支持体シートを剥離除去すると良い。後
塗装適性がより向上し、接着力の耐熱性も向上する。
In the above-mentioned curved surface transfer method, preferably, the acrylic adhesive is a two-part curable adhesive containing a curing agent, and is used in a state where the adhesive is not completely cured at least in a state of solid particle collision. The transfer sheet is preferably brought into contact with the transfer surface of the transfer substrate by pressure, and the support sheet is preferably peeled off after the transfer layer is adhered to the transfer substrate with an adhesive. The post-coating suitability is further improved, and the heat resistance of the adhesive strength is also improved.

【0012】また、本発明の化粧材は、表面に凹凸形状
を有する被転写基材に、接着剤を介して少なくとも装飾
層からなる転写層が転写形成された化粧材において、該
接着剤がアクリル系樹脂からなるアクリル系接着剤であ
り、且つ該アクリル系樹脂のガラス転移温度が20℃以
下、重量平均分子量が100,000以上である構成と
した。転写不良による外観欠陥が無く、凹凸表面と転写
層による装飾とで、意匠性に優れた化粧材が可能とな
る。しかも、後塗装適性も良好である。なお、好ましく
はアクリル系接着剤は硬化剤を含む2液硬化型接着剤の
硬化物とすれば、後塗装適性はより向上し、接着力の耐
熱性も向上する。
Further, the decorative material of the present invention is a decorative material in which at least a transfer layer comprising a decorative layer is formed on an image-receiving substrate having an uneven surface by means of an adhesive. It is an acrylic adhesive made of an acrylic resin, and the acrylic resin has a glass transition temperature of 20 ° C. or less and a weight average molecular weight of 100,000 or more. There is no appearance defect due to poor transfer, and the decorative material with the uneven surface and the transfer layer enables a decorative material excellent in design. Moreover, the post-coating suitability is also good. Preferably, if the acrylic adhesive is a cured product of a two-component curable adhesive containing a curing agent, the suitability for post-coating is further improved, and the heat resistance of the adhesive force is also improved.

【0013】また、本発明の化粧材は、上記化粧材に対
して更に、転写層上に上塗り層が形成されている構成と
した。接着剤が後塗装適性を有するので、後塗装品とし
ても、後塗装時の転写層の膨れによる外観不良の無い、
意匠性に優れた化粧材が可能となる。
Further, the decorative material of the present invention has a configuration in which an overcoat layer is further formed on the transfer layer with respect to the decorative material. Since the adhesive has post-painting suitability, even as a post-painted product, there is no appearance defect due to swelling of the transfer layer at the time of post-painting,
A cosmetic material having excellent design properties can be obtained.

【0014】[0014]

【発明の実施の形態】以下、図面を参照しながら本発明
の曲面転写方法及び化粧材について、実施の形態を説明
する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a curved surface transfer method and a decorative material according to the present invention will be described with reference to the drawings.

【0015】被転写基材 先ず、本発明における被転写基材は、被転写面が凹凸形
状を有する凹凸表面であり、特にその凹凸が深い凹凸の
被転写基材が好適である。また、転写方法においては、
固体粒子衝突圧を転写シートの凹凸表面への押圧に利用
するので、凹凸表面が深い上に更に三次元的凹凸の被転
写基材は好適である。なお、凹凸表面を構成する各面
は、平面のみから、曲面のみから、或いは平面と曲面の
組み合わせと任意である。従って、本発明の被転写基材
上の曲面とは、断面が下駄の歯形の様に複数の平面のみ
から構成される曲面を持たない凹凸面も意味する。ま
た、本発明でいう曲率とは、立方体の辺或いは頂点の周
辺の様に角張っている曲率無限大(曲率半径=0)の場
合も包含する。
First, the substrate to be transferred according to the present invention has a concave-convex surface having a concave-convex shape, and a substrate having a concave-convex surface having a large irregularity is particularly preferable. In the transfer method,
Since the solid particle collision pressure is used for pressing against the uneven surface of the transfer sheet, a substrate to be transferred having a deep uneven surface and three-dimensional unevenness is suitable. In addition, each of the surfaces constituting the uneven surface may be arbitrarily selected from only a flat surface, only a curved surface, or a combination of a flat surface and a curved surface. Therefore, the curved surface on the substrate to be transferred according to the present invention also means a concavo-convex surface having no curved surface composed of only a plurality of flat surfaces, such as a tooth profile of a clog. Further, the curvature in the present invention includes a case where the curvature is infinite (the radius of curvature = 0) which is angular like the periphery of a side or a vertex of a cube.

【0016】また、大柄な凹凸に重畳して微細な凹凸を
有する凹凸表面の被転写基材、或いは凹凸表面の凹部底
部や凹部内側面に転写すべき面を有する被転写基材も可
能である。前記大柄な凹凸と微細な凹凸とは、例えば図
6の要部拡大斜視図に示す如く、被転写基材の凹凸が大
柄な凹部401と大柄な凸部402とからなる大柄な凹
凸と、その大柄な凸部402上にある微細な凹凸403
とからなるもので、大柄の凹凸形状は段差が1〜10m
m、凹部の幅が1〜10mm、凸部の幅が5mm以上の
もので構成されるものであり、微細な凹凸形状は、段差
及び幅ともに大柄な凹凸形状よりも小さく、具体的には
段差が0.1〜5mm程度、凹部の幅及び凸部の幅が
0.1mm以上で、大柄な凹凸形状の凸部の幅の1/2
未満程度である。大柄な凹凸と微細な凹凸との組み合わ
せの凹凸から成り、且つ三次元的な表面凹凸を持つ化粧
材の凹凸模様の具体例としては、例えば、大柄な凹凸と
して目地、溝等を有するタイル、煉瓦、石等の二次元配
列模様を有し、その上に微細な凹凸としてスタッコ調、
リシン調等の吹き付け塗装面の凹凸模様、花崗岩の劈開
面やトラバーチン大理石板等の石材表面の凹凸等を有す
る石目調凹凸模様を有するもの、或いは大柄な凹凸模様
として目地、溝、簓、サネ(実)等を有する羽目板模
様、浮造木目板模様を有し、その上に微細凹凸として導
管溝、浮出した年輪、ヘアライン等を有する木目調の凹
凸模様を有するものが挙げられる。
Further, a substrate to be transferred having an uneven surface having fine irregularities superimposed on large irregularities, or a substrate to be transferred having a surface to be transferred to the bottom of the concave portion or the inner surface of the concave portion of the irregular surface is also possible. . The large irregularities and the fine irregularities are, for example, as shown in a main part enlarged perspective view of FIG. 6, the irregularities of the transferred base material are large irregularities including a large concave portion 401 and a large convex portion 402, Fine irregularities 403 on large convexes 402
The large uneven shape has a step of 1 to 10 m.
m, the width of the concave portion is 1 to 10 mm, and the width of the convex portion is 5 mm or more. The fine unevenness is smaller than the large unevenness in both the step and the width. Is about 0.1 to 5 mm, the width of the concave portion and the width of the convex portion are 0.1 mm or more, and is 2 of the width of the convex portion having a large irregular shape.
Less than about. Specific examples of the uneven pattern of the decorative material having a combination of large and small irregularities and fine irregularities and having three-dimensional surface irregularities include, for example, tiles and bricks having joints and grooves as large irregularities. , Has a two-dimensional array pattern such as stone, stucco-like as fine irregularities on it,
Irregular patterns on the spray-painted surface such as ricin-like, stone-like irregular patterns with cleaved surface of granite or irregularities on the surface of stone material such as travertine marble plate, or joints, grooves, grooves, and sunflowers as large irregular patterns And a wood-grain pattern having fine grooves such as conduit grooves, raised annual rings, and hairlines.

【0017】被転写基材の材料には特に限定は無い。例
えば、被転写基材の材料は、無機非金属系、金属系、木
質系、プラスチック系等である。具体的には、無機非金
属系では、例えば、押し出しセメント、スラグセメン
ト、ALC(軽量気泡コンクリート)、GRC(硝子繊
維強化コンクリート)、パルプセメント、木片セメン
ト、石綿セメント、ケイ酸カルシウム、石膏、石膏スラ
グ等の非陶磁器窯業系材料、土器、陶器、磁器、セッ
器、硝子、琺瑯等のセラミックス等の無機質材料等があ
る。また、金属系では、例えば、鉄、アルミニウム、銅
等の金属材料がある。また、木質系では、例えば、杉、
檜、樫、ラワン、チーク等からなる単板、合板、パーテ
ィクルボード、繊維板、集成材等がある。また、プラス
チック系では、例えば、ポリプロピレン、ABS樹脂、
フェノール樹脂等の樹脂材料がある。
The material of the substrate to be transferred is not particularly limited. For example, the material of the substrate to be transferred is an inorganic nonmetal-based, metal-based, wood-based, plastic-based, or the like. Specifically, in the case of inorganic nonmetals, for example, extruded cement, slag cement, ALC (lightweight cellular concrete), GRC (glass fiber reinforced concrete), pulp cement, wood chip cement, asbestos cement, calcium silicate, gypsum, gypsum There are non-porcelain ceramic materials such as slag, and earthenware, ceramics, porcelain, setware, glass, and inorganic materials such as ceramics such as enamel. Further, in the metal system, for example, there are metal materials such as iron, aluminum, and copper. In the wood system, for example, cedar,
There are veneers, plywood, particleboard, fiberboard, laminated wood, etc. made of cypress, oak, lauan, teak and the like. In the case of plastics, for example, polypropylene, ABS resin,
There is a resin material such as a phenol resin.

【0018】また、被転写基材の形状は、平板や屈曲し
た板、柱状物、成形品等の立体物等と任意である。例え
ば、被転写基材は全体として(包絡面形状が)平板状の
板材の他、断面が円弧状に凸又は凹に1方向に湾曲した
二次元的凹凸を有する基材等でも良い。なお、被転写基
材表面を所望の凹凸とするには、プレス加工、エンボス
加工、押し出し加工、切削加工、成形加工等によれば良
い。
The shape of the substrate to be transferred is arbitrary, such as a flat plate, a bent plate, a column, a three-dimensional object such as a molded product, or the like. For example, the base material to be transferred may be a flat plate material (having an envelope shape) as a whole, or a base material having two-dimensional irregularities whose cross section is convex or concave in an arc shape and curved in one direction. In order to make the surface of the substrate to be transferred into a desired unevenness, a pressing process, an embossing process, an extrusion process, a cutting process, a forming process, or the like may be used.

【0019】また、これらの被転写基材表面には、予
め、接着剤との接着を補助する為の易接着プライマー、
被転写基材がアルカリ性基材の場合にアルカリの滲出を
防ぐシーラー剤、或いは表面の微凹凸や多孔質を目止め
し封じる目止剤を塗工しておいても良い。易接着プライ
マー、シーラー剤、或いは目止剤としては、イソシアネ
ート、2液硬化ウレタン樹脂、エポキシ樹脂、アクリル
樹脂、酢酸ビニル樹脂等の樹脂を塗工し形成する。
On the surface of the substrate to be transferred, an easy-adhesion primer for assisting the adhesion with the adhesive is provided in advance.
When the base material to be transferred is an alkaline base material, a sealer agent for preventing oozing of alkali, or a sealing agent for closing and sealing fine irregularities and porosity on the surface may be applied. A resin such as an isocyanate, a two-part curable urethane resin, an epoxy resin, an acrylic resin, or a vinyl acetate resin is applied as an easy-adhesion primer, a sealer, or a sealant.

【0020】接着剤 接着剤としては、ガラス転移温度が20℃以下で且つ重
量平均分子量が100,000以上であるアクリル系樹
脂を用いたアクリル系接着剤を使用する。ガラス転移温
度が20℃を越えると、代表的な転写温度の下限値であ
る80℃の転写温度において、その少なくとも初期接着
に於いて熱融着による接着力が十分に得にくくなる。そ
の結果、凹凸追従性が良好となる転写シート及び転写圧
条件で、転写シートを被転写基材の表面凹凸形状に追従
し接触させても、その後の凹凸固定性が十分に得られ
ず、最終的に良好な転写性が得られず、転写層の浮き
や、転写層が全く被転写基材上に無い転写抜けが発生す
る。これに対して、ガラス転移温度が20℃以下なら
ば、上記転写温度80℃に於いても、樹脂が高粘着性の
状態を発現する事により、凹凸固定性は確保できる。ま
た、重量平均分子量を100,000以上とする事で、
分子が動き難くなる為、流動性が低下し、たとえ支持体
シートが凹部から浮き上がっても、転写層は被転写基材
に止まり、転写層が被転写基材の凹部から浮き上がって
転写層の浮きが発生する事が無く、凹凸固定性を確保で
きる。しかし、重量平均分子量が100,000未満で
あると、流動性が増し、転写層を繋ぎ止めておく保持力
が低下し、凹凸固定性は低下する。
Adhesive As the adhesive, an acrylic adhesive using an acrylic resin having a glass transition temperature of 20 ° C. or less and a weight average molecular weight of 100,000 or more is used. When the glass transition temperature exceeds 20 ° C., at the transfer temperature of 80 ° C., which is a typical lower limit of the transfer temperature, it is difficult to sufficiently obtain the adhesive force by thermal fusion at least in the initial bonding. As a result, under the conditions of the transfer sheet and the transfer pressure at which the unevenness followability is good, even if the transfer sheet follows and comes into contact with the surface unevenness shape of the base material to be transferred, the subsequent unevenness fixability is not sufficiently obtained. In this case, the transferability of the transfer layer cannot be obtained, and the transfer layer floats or the transfer omission occurs in which the transfer layer is completely absent on the substrate to be transferred. On the other hand, if the glass transition temperature is 20 ° C. or lower, even at the above-mentioned transfer temperature of 80 ° C., the resin exhibits a highly tacky state, whereby the irregularity fixing property can be secured. By setting the weight average molecular weight to 100,000 or more,
Since the molecules are difficult to move, the fluidity is reduced, and even if the support sheet rises from the concave portion, the transfer layer stays on the substrate to be transferred, and the transfer layer floats from the concave portion of the transfer substrate, and the transfer layer floats. No irregularities are generated, and irregularity fixability can be ensured. However, when the weight-average molecular weight is less than 100,000, the fluidity is increased, the holding power for fixing the transfer layer is reduced, and the irregularity fixing property is reduced.

【0021】以上の様に、ガラス転移温度のみを特定し
た接着剤を使用しても、転写不良の無い転写製品は一応
得られる。しかし、化粧材等の転写製品に於いては、実
用上、転写後の転写層面を保護する為等に、透明樹脂層
等の上塗り層を後塗装する事が重要である。これに対し
て、上記のガラス転移温度を特定しただけの接着剤を使
用しただけでは、得られる転写製品は後塗装適性が必ず
しも良いとは言えない。すなわち、ガラス転移温度を2
0℃以下としても、重量平均分子量が100,000未
満であると、後塗装時に塗料を加熱乾燥(通常、最大1
50℃程度まで加熱する)させる時に、その希釈溶媒に
よって接着剤が溶解或いは膨潤して、転写層が被転写基
材から浮き上がる膨れが起き易くなる。そこで、重量平
均分子量を100,000以上とすれば、後塗装時の膨
れ発生が無く後塗装適性は良好となる。重量平均分子量
を100,000以上とする事で、アクリル系樹脂が転
写シートの装飾層となるインキ層への浸透を抑え、また
上塗り層塗装時の加熱乾燥時の温度でも、接着剤の(粘
着性は出ても)流動が抑えられ、転写層の膨れが発生し
にくくなる。特に、凹凸表面に固体粒子衝突圧で転写す
る方法では、固体粒子による衝突衝撃により、浸透力の
有る接着剤の場合、空気を転写シートと被転写基材間に
抱き込む「エア噛み」を起こしながら転写される場合が
あり、抱き込まれた空気が加熱乾燥時の熱で熱膨張する
事による、膨れも発生し易い。
As described above, even if an adhesive whose glass transition temperature is specified is used, a transfer product free from transfer failure can be obtained. However, in the case of a transfer product such as a cosmetic material, it is practically important to post-coat an overcoat layer such as a transparent resin layer in order to protect the transfer layer surface after the transfer. On the other hand, the transfer product obtained is not necessarily good in post-coating suitability only by using the adhesive having the specified glass transition temperature. That is, the glass transition temperature is 2
If the weight average molecular weight is less than 100,000 even at 0 ° C. or less, the paint is heated and dried at the time of post-coating (usually a maximum of 1
When it is heated to about 50 ° C.), the adhesive dissolves or swells due to the diluting solvent, and the swelling of the transfer layer from the transfer-receiving substrate is likely to occur. Therefore, if the weight average molecular weight is 100,000 or more, there is no blistering at the time of post-coating, and the post-coating suitability is good. By setting the weight average molecular weight to 100,000 or more, the acrylic resin suppresses penetration into the ink layer serving as the decorative layer of the transfer sheet, and the adhesive (adhesiveness) can be used even at the temperature of heating and drying at the time of coating the overcoat layer. Flow is suppressed), and swelling of the transfer layer is less likely to occur. In particular, in the method of transferring to the uneven surface with the solid particle collision pressure, the collision impact of the solid particles causes "air biting" in the case of a permeable adhesive, which embraces air between the transfer sheet and the substrate to be transferred. In some cases, the air is transcribed while the air is being entrapped, and the entrapped air is thermally expanded by the heat generated during heating and drying.

【0022】また、該アクリル系接着剤は、後塗装適
性、更には高い密着力、及びその耐熱性等の点で、好ま
しくは硬化剤を含む2液硬化型として用いる。なお、2
液硬化型接着剤でも、転写シートを被転写基材を圧接し
接触させる転写初期段階では、硬化反応は未完了状態と
する。もちろん、2液硬化型接着剤としても、その熱融
着による初期接着力には、上記ガラス転移温度及び重量
平均分子量が関係する。そして、その後の硬化反応によ
って、最終的な接着力や後塗装適性は、より向上する。
但し、ガラス転移温度及び重量平均分子量が規定のアク
リル系樹脂を接着剤に使用しても、それを2液硬化型接
着剤として使用する場合には、接着剤の感熱乾燥時の熱
で硬化反応が進み過ぎれば、融着力による初期接着力が
低下し、凹凸固定性低下による転写性低下が起きるの
で、硬化反応は進み過ぎない様にして使用すると良い。
条件にもよるが、転写シート圧接時に於ける硬化反応の
反応率は30%以下に止めておくと良好な凹凸固定性、
ひいては良好な転写性が得られる。この為には、転写圧
押圧前に被転写基材や接着剤の加熱、或いは接着剤を塗
工等で施した後、その揮発溶剤分の加熱乾燥等による加
熱等の加熱時の温度・時間を適度な条件とする。
The acrylic adhesive is preferably used as a two-part curing type containing a curing agent in view of suitability for post-coating, high adhesion, and heat resistance. In addition, 2
Even with a liquid-curable adhesive, the curing reaction is not completed at the initial stage of the transfer in which the transfer sheet is pressed against and brought into contact with the transfer substrate. Of course, even with a two-part curable adhesive, the above-mentioned glass transition temperature and weight-average molecular weight are related to the initial adhesive strength due to thermal fusion. Then, the final adhesive strength and suitability for post-coating are further improved by the subsequent curing reaction.
However, even if an acrylic resin having a prescribed glass transition temperature and a weight average molecular weight is used as an adhesive, when it is used as a two-part curable adhesive, the curing reaction is caused by heat during heat-sensitive drying of the adhesive. Is excessively advanced, the initial adhesive force due to the fusing force is reduced, and the transferability is reduced due to the reduced unevenness fixing property.
Depending on the conditions, if the reaction rate of the curing reaction at the time of press-contacting the transfer sheet is kept at 30% or less, good fixing property of unevenness,
As a result, good transferability can be obtained. For this purpose, the temperature and time during heating such as heating by heating or drying the volatile solvent component after heating the substrate to be transferred or the adhesive before applying the transfer pressure or applying the adhesive by coating or the like. Is an appropriate condition.

【0023】ところで、上記アクリル系樹脂としては、
そのガラス転移温度及び重量平均分子量が上記条件を満
たせば、その他の点については特に制限は無く、接着す
る被転写基材及び転写層の材料に応じて、好ましい接着
力が得られるアクリル系樹脂を公知の樹脂の中から選択
使用すれば良い。
By the way, as the acrylic resin,
If the glass transition temperature and the weight average molecular weight satisfy the above conditions, there is no particular limitation on the other points, and depending on the material of the transfer-receiving substrate and the transfer layer to be bonded, an acrylic resin having a preferable adhesive strength can be obtained. The resin may be selected from known resins.

【0024】上記アクリル系樹脂としては、水酸基等の
反応性の官能基を持たない熱可塑性のアクリル系樹脂で
も良いが、好ましくは、反応性の官能基を有する硬化性
のアクリル系樹脂を、最終的に転写製品では硬化物とな
る様に使用する。該官能基としては、例えば水酸基、ア
ミノ基、カルボキシル基等である。官能基が水酸基の場
合では、例えばアクリルポリオール等のアクリル系樹脂
がある。
The acrylic resin may be a thermoplastic acrylic resin having no reactive functional group such as a hydroxyl group. Preferably, a curable acrylic resin having a reactive functional group is used as the final acrylic resin. In a transfer product, it is used so as to become a cured product. Examples of the functional group include a hydroxyl group, an amino group, and a carboxyl group. When the functional group is a hydroxyl group, for example, there is an acrylic resin such as an acrylic polyol.

【0025】上記アクリルポリオールは、例えば、(メ
タ)アクリル酸メチル、(メタ)アクリル酸エチル、
(メタ)アクリル酸−n−プロピル、(メタ)アクリル
酸イソプロピル、(メタ)アクリル酸−n−ブチル、
(メタ)アクリル酸イソブチル、(メタ)アクリル酸オ
クチル、(メタ)アクリル酸エチルヘキシル等の(メ
タ)アクリル酸アルキルエステル単量体等の1種又は2
種以上と、(メタ)アクリル酸−2−ヒドロキシエチ
ル、(メタ)アクリル酸−2−ヒドロキシプロピル、
(メタ)アクリル酸−2−ヒドロキシ−3−フェノキシ
プロピル等の分子中に水酸基を有する(メタ)アクリル
酸エステル単量体の1種又は2種以上と、更に必要に応
じ、スチレン単量体等とを共重合させて得られた共重合
体で、水酸基を複数有するポリオールである。なお、
(メタ)アクリルとは、アクリル又はメタクリルの意味
である。
The acrylic polyol is, for example, methyl (meth) acrylate, ethyl (meth) acrylate,
N-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate,
One or two of alkyl (meth) acrylate monomers such as isobutyl (meth) acrylate, octyl (meth) acrylate, and ethylhexyl (meth) acrylate;
Species or more, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate,
One or two or more (meth) acrylic acid ester monomers having a hydroxyl group in a molecule such as (meth) acrylic acid-2-hydroxy-3-phenoxypropyl and, if necessary, a styrene monomer and the like And a polyol having a plurality of hydroxyl groups. In addition,
(Meth) acryl means acryl or methacryl.

【0026】この様な水酸基、或いはカルボキシル基等
の官能基を有する硬化性のアクリル系樹脂は、硬化剤無
しの熱可塑性樹脂のままで使用しても良いが、好ましく
は、それを主剤として、更に架橋剤を加えて2液硬化型
接着剤として使用すると良い。2液硬化型接着剤として
使用すれば、最終的に架橋硬化物となるので、後塗装時
の溶媒で溶解や膨潤し難くなる為に、後塗装時の膨れ発
生の防止効果が大きい。従って、後塗装適性は向上し、
更に接着力の耐熱性等も得られる。本発明で用いるアク
リル系樹脂はガラス転移温度の低いものを採用する為、
転写された転写層の耐熱性を要求する場合は、特に2液
硬化型として用いる事が推奨される。
Such a curable acrylic resin having a functional group such as a hydroxyl group or a carboxyl group may be used as it is as a thermoplastic resin without a curing agent. Further, a crosslinking agent may be added to use as a two-part curable adhesive. When used as a two-part curable adhesive, it eventually becomes a cross-linked cured product, so that it is difficult to dissolve or swell with a solvent used in post-coating, so that the effect of preventing swelling during post-coating is great. Therefore, post-painting suitability is improved,
Further, heat resistance of adhesive strength can be obtained. The acrylic resin used in the present invention has a low glass transition temperature.
When heat resistance of the transferred transfer layer is required, it is particularly recommended to use a two-component curing type.

【0027】上記架橋剤としては、アクリル系樹脂が有
する反応性の官能基と化学反応して、好ましくは架橋硬
化となる硬化反応を起こし得る反応性化合物であれば、
特に制限は無く従来公知のもので良い。例えば、アクリ
ル系樹脂の官能基が水酸基、カルボキシル基、アミノ基
等の場合では、例えばイソシアネートやエポキシ化合
物、或いはシランカップリング剤を架橋剤として使用す
れば良い。イソシアネートは水酸基とのウレタン化反応
等でアクリル系樹脂と反応する。エポキシ化合物は開環
反応でアクリル系樹脂と反応する。
The cross-linking agent is a reactive compound capable of chemically reacting with a reactive functional group of the acrylic resin and preferably causing a curing reaction for crosslinking and curing.
There is no particular limitation, and a conventionally known one may be used. For example, when the functional group of the acrylic resin is a hydroxyl group, a carboxyl group, an amino group, or the like, for example, an isocyanate, an epoxy compound, or a silane coupling agent may be used as a crosslinking agent. The isocyanate reacts with the acrylic resin by a urethane reaction with a hydroxyl group or the like. The epoxy compound reacts with the acrylic resin by a ring opening reaction.

【0028】なお、上記イソシアネートとしては、分子
中に2個以上のイソシアネート基を有する多価イソシア
ネートが用いられる。例えば、2,4−トリレンジイソ
シアネート、キシレンジイソシアネート、4,4′−ジ
フェニルメタンジイソシアネート等の芳香族イソシアネ
ート、或いは、1,6−ヘキサメチレンジイソシアネー
ト、イソホロンジイソシアネート、水素添加トリレンジ
イソシアネート、水素添加ジフェニルメタンジイソシア
ネート等の脂肪族(乃至は脂環式)イソシアネート、或
いはまた、上記各種イソシアネートの付加体、又は多量
体を用いる事もできる。例えば、トリレンジイソシアネ
ートの付加体、トリレンジイソシアネート3量体(tr
imer)等がある。
As the isocyanate, a polyvalent isocyanate having two or more isocyanate groups in a molecule is used. For example, aromatic isocyanates such as 2,4-tolylene diisocyanate, xylene diisocyanate, 4,4'-diphenylmethane diisocyanate, or 1,6-hexamethylene diisocyanate, isophorone diisocyanate, hydrogenated tolylene diisocyanate, hydrogenated diphenylmethane diisocyanate, etc. Aliphatic (or alicyclic) isocyanate, or an adduct or multimer of the above various isocyanates can also be used. For example, an adduct of tolylene diisocyanate, a trimer of tolylene diisocyanate (tr
imer) and the like.

【0029】また、上記シランカップリング剤として
は、アルコキシ基の他に更に、アミノ基、ビニル基、エ
ポキシ基、メルカプト基、クロル基等を有する公知のシ
ランカップリング剤を用いれば良い。例えば、γ−アミ
ノプロピルトリエトキシシラン、γ−メタクリロキシプ
ロピルトリメトキシシラン、γ−メタクリロキシプロピ
ルメチルジメトキシシラン、γ−メタクリロキシプロピ
ルジメチルメトキシシラン、γ−メタクリロキシプロピ
ルトリエトキシシラン、γ−メタクリロキシプロピルジ
メチルエトキシシラン、γ−アクリロキシプロピルトリ
メトキシシラン、γ−アクリロキシプロピルメチルジメ
トキシシラン、γ−アクリロキシプロピルジメチルメト
キシシラン、γ−アクリロキシプロピルトリエトキシシ
ラン、γ−アクリロキシプロピルメチルジエトキシシラ
ン、γ−アクリロキシプロピルジメチルエトキシシラ
ン、ビニルトリエトキシシラン、γ−グリシドキシプロ
ピルトリメトキシシラン、γ−メルカプトプロピルトリ
メトキシシランなどである。
As the silane coupling agent, a known silane coupling agent having an amino group, a vinyl group, an epoxy group, a mercapto group, a chloro group and the like in addition to the alkoxy group may be used. For example, γ-aminopropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropyldimethylmethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxy Propyldimethylethoxysilane, γ-acryloxypropyltrimethoxysilane, γ-acryloxypropylmethyldimethoxysilane, γ-acryloxypropyldimethylmethoxysilane, γ-acryloxypropyltriethoxysilane, γ-acryloxypropylmethyldiethoxysilane , Γ-acryloxypropyldimethylethoxysilane, vinyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysila And so on.

【0030】なお、これらの架橋剤の添加量は、アクリ
ル系樹脂100重量部に対して、5〜15重量部程度で
ある。
The amount of addition of these crosslinking agents is about 5 to 15 parts by weight based on 100 parts by weight of the acrylic resin.

【0031】なお、接着剤中には、必要に応じ、各種添
加剤を添加する事もできる。これらの添加剤としては、
例えば、炭酸カルシウム、硫酸バリウム、シリカ、アル
ミナ等の微粉末からなる体質顔料(充填剤)、有機ベン
トナイト等のチキソトロピック付与剤(特に凹凸段差の
大きい被転写基材の場合、接着剤が凸部から凹部へ流入
する事を防止する為に添加すると良い。)等である。
Incidentally, various additives can be added to the adhesive as required. As these additives,
For example, extenders (fillers) composed of fine powders such as calcium carbonate, barium sulfate, silica, and alumina, and thixotropic agents such as organic bentonite (especially, in the case of a transfer substrate having a large uneven step, the adhesive may have convex portions) Is preferably added in order to prevent the water from flowing into the concave portion.).

【0032】この様なアクリル系接着剤は、被転写基
材、転写シート、或いはこれら両方に施して使用する。
接着剤を施す対象物は、表面凹凸形状、被転写基材の材
質や形状、使用できる転写装置等に応じて、適宜使い分
ければ良い。なお、2液硬化型接着剤として用いる場合
は、転写シートに施して使用する場合は(転写層の一部
となる)、転写シート保存時に硬化反応が進む事もある
ので、転写シートを被転写基材に圧接する時に施すと良
い。そして、接着剤は、上記アクリル系樹脂等を、水、
有機溶剤等の溶媒(又は分散媒)に溶解(又は分散)し
た溶液(又は分散液)の形態等の、接着剤としての従来
公知の形態で施せば良い。例えば、水性エマルション、
有機溶剤系溶液等の形態である。また、接着剤を被転写
基材や転写シートに施す方法は特に制限は無く、従来公
知の方法で良い。例えば、ロールコート、グラビアコー
ト等の従来公知の塗工法、或いはグラビア印刷等の印刷
法等によれば良い。また、特に被転写基材の場合は、ス
プレーコート、フローコート、或いは、軟質ゴムロール
やスポンジロール等のロールを使用したロールコート等
の塗工法でも良い。接着剤の塗布量は、接着剤の樹脂内
容、被転写基材の種類及び表面状態等で異なるが、通常
10〜200g/m2 (固形分)程度である。
Such an acrylic adhesive is applied to a substrate to be transferred, a transfer sheet, or both.
The object to which the adhesive is to be applied may be appropriately selected according to the surface unevenness, the material and shape of the substrate to be transferred, the transfer device that can be used, and the like. When used as a two-part curable adhesive, when applied to a transfer sheet (becomes a part of the transfer layer), the curing reaction may proceed during storage of the transfer sheet. It is preferable to apply it when pressing against a substrate. Then, the adhesive is formed by adding the acrylic resin or the like to water,
It may be applied in a conventionally known form as an adhesive, such as in the form of a solution (or dispersion) dissolved (or dispersed) in a solvent (or dispersion medium) such as an organic solvent. For example, aqueous emulsions,
It is in the form of an organic solvent-based solution or the like. The method for applying the adhesive to the substrate to be transferred or the transfer sheet is not particularly limited, and may be a conventionally known method. For example, a conventionally known coating method such as roll coating and gravure coating, or a printing method such as gravure printing may be used. In particular, in the case of a substrate to be transferred, a coating method such as spray coating, flow coating, or roll coating using a roll such as a soft rubber roll or a sponge roll may be used. The amount of the adhesive applied varies depending on the resin content of the adhesive, the type of the substrate to be transferred, the surface condition, and the like, but is usually about 10 to 200 g / m 2 (solid content).

【0033】転写シート 転写シートSには、図2(A)で示した如く、離型性を
有する支持体シート1と転写移行する転写層2とからな
る。転写層は通常は少なくとも装飾層からなる。転写シ
ートとしては、被転写基材の表面凹凸に追従できる凹凸
追従性を有するものであれば特に制限は無い。目的とす
る転写製品に応じた転写シートを使用すれば良い。な
お、転写シートには、被転写基材表面と転写シートとの
間に抱き込まれて残留する空気を抜き易くする為に、必
要に応じて転写シート全面に転写シート全層を貫通する
小孔を多数穿設しても良い。小孔の直径は0.1〜0.
5mm程度、小孔の数密度(面密度)は1〜100個/
cm2 程度である。
[0033] The transfer sheet transfer sheet S, as shown in FIG. 2 (A), the consist transfer layer 2 which is transferred proceeds to the support sheet 1 having releasing property. The transfer layer usually comprises at least a decorative layer. The transfer sheet is not particularly limited as long as it has an irregularity following property capable of following the surface irregularities of the substrate to be transferred. What is necessary is just to use the transfer sheet according to the target transfer product. The transfer sheet is provided with small holes penetrating the entire transfer sheet layer as necessary, in order to facilitate the removal of residual air embraced between the surface of the substrate to be transferred and the transfer sheet. May be bored. The diameter of the small holes is 0.1-0.
About 5 mm, number density (area density) of small holes is 1 to 100 /
cm 2 .

【0034】〔支持体シート〕支持体シート1として
は、転写層と離型性が有り、転写時に伸びる性質(延伸
性:永久変形又は弾性変形による伸び)があれば特に限
定はない。延伸性により固体粒子の衝突圧印加時に、被
転写基材表面の凹部内部まで転写シートを追従させる凹
凸追従性が得られる。転写シート全体の延伸性は、主に
支持体シートの延伸性に支配される。従って、支持体シ
ートには、従来公知の熱可塑性樹脂フィルムの他に、常
温でも延伸するゴム膜も使用できる。熱可塑性樹脂フィ
ルムの場合、その支持体シートを用いた転写シートは、
装飾層等の転写層形成時には延伸性が殆どなく、転写時
には加熱により充分な延伸性を発現し凹凸追従性を発揮
し、且つ冷却後は変形した形状を保持し続けて弾性によ
る形状の復元を生じ難く、良好な凹凸固定性に寄与す
る。そして、転写層と被転写基材間の接着剤が充分に接
着力を発現していれば、凹凸固定性は転写層の被転写基
材への密着という完全なものとなる。この様な熱可塑性
樹脂の支持体シートは、従来公知の通常の転写シート同
様に容易に、本発明で用い得る転写シートに適用出来
る。
[Support Sheet] The support sheet 1 is not particularly limited as long as it has releasability from the transfer layer and has elongation properties at the time of transfer (stretchability: elongation due to permanent deformation or elastic deformation). Due to the stretchability, when the collision pressure of the solid particles is applied, the irregularity following property of following the transfer sheet to the inside of the concave portion on the surface of the substrate to be transferred can be obtained. The stretchability of the entire transfer sheet is mainly governed by the stretchability of the support sheet. Therefore, in addition to a conventionally known thermoplastic resin film, a rubber film that can be stretched even at room temperature can be used as the support sheet. In the case of a thermoplastic resin film, a transfer sheet using the support sheet is
When forming a transfer layer such as a decorative layer, there is almost no stretchability, and at the time of transfer, sufficient stretchability is exhibited by heating to exhibit unevenness followability, and after cooling, the deformed shape is maintained to restore the shape by elasticity. It hardly occurs and contributes to good unevenness fixability. If the adhesive between the transfer layer and the substrate to be transferred sufficiently expresses the adhesive force, the unevenness fixing property is perfect, ie, the adhesion of the transfer layer to the substrate to be transferred. Such a support sheet made of a thermoplastic resin can be easily applied to a transfer sheet that can be used in the present invention, similarly to a conventionally known ordinary transfer sheet.

【0035】支持体シートの具体例としては、延伸性の
点で、従来多用されている2軸延伸ポリエチレンテレフ
タレートフィルムでも、表面凹凸形状次第で、加熱条
件、衝突圧条件等の設定によって、表面凹凸に転写シー
トを追従させる為に必要充分な延伸性が得られる事もあ
る。ただ、より低温・低圧で延伸性が発現し易い好まし
い支持体シートとしては、例えば、エチレン・テレフタ
レート・イソフタレート共重合体ポリエステル、ポリブ
チレンテレフタレート等の熱可塑性ポリエステル樹脂、
ポリプロピレン、ポリエチレン、ポリメチルペンテン、
エチレン−プロピレン共重合体、エチレン−プロピレン
−ブテン3元共重合体、オレフィン系熱可塑性エラスト
マー等のポリオレフィン樹脂、塩化ビニル樹脂、エチレ
ン−酢酸ビニル共重合体、エチレン−ビニルアルコール
共重合体、アクリル樹脂、ポリアミド樹脂、或いは天然
ゴム、合成ゴム、ウレタン系熱可塑性エラストマー等を
単体又は混合物で、単層又は異種の複層とした樹脂フィ
ルム(シート)を用いることができる。これら樹脂フィ
ルムは低延伸又は無延伸の物が好ましい。例えば、具体
的にはポリプロピレン系熱可塑性エラストマーフィルム
は、延伸特性に優れ且つ廃棄燃焼時に塩酸ガスを発生せ
ず環境対策的にも好ましい支持体シートの一つである。
支持体シートの厚さは、通常20〜200μmである。
As a specific example of the support sheet, in terms of stretchability, even a biaxially stretched polyethylene terephthalate film, which has been widely used in the past, can be used by setting heating conditions, collision pressure conditions and the like depending on the surface unevenness. In some cases, sufficient stretchability necessary to make the transfer sheet follow the transfer sheet may be obtained. However, preferred support sheets that easily exhibit stretchability at lower temperature and lower pressure include, for example, ethylene terephthalate / isophthalate copolymer polyester, thermoplastic polyester resin such as polybutylene terephthalate,
Polypropylene, polyethylene, polymethylpentene,
Polyolefin resin such as ethylene-propylene copolymer, ethylene-propylene-butene terpolymer, olefin-based thermoplastic elastomer, vinyl chloride resin, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, acrylic resin A resin film (sheet) having a single layer or different layers of a single or mixture of polyamide resin, natural rubber, synthetic rubber, urethane-based thermoplastic elastomer or the like can be used. These resin films are preferably low stretched or unstretched. For example, specifically, a polypropylene-based thermoplastic elastomer film is one of the preferable support sheets which has excellent stretching properties, does not generate hydrochloric acid gas during waste combustion, and is environmentally friendly.
The thickness of the support sheet is usually 20 to 200 μm.

【0036】なお、支持体シートには必要に応じ、転写
層側に転写層との離型性を向上させる為、支持体シート
の構成要素として離型層を設けても良い。この離型層は
支持体シートを剥離時に、支持体シートの一部として転
写層から剥離除去される。離型層としては、例えば、シ
リコーン樹脂、メラミン樹脂、ポリアミド樹脂、ウレタ
ン樹脂、ポリオレフィン系樹脂、ワックス等の単体又は
これらを含む混合物が用いられる。また、離型性の調整
の為に、支持体シートの転写層側の面にコロナ放電処
理、オゾン処理等を行っても良い。
The support sheet may be provided with a release layer as a component of the support sheet on the transfer layer side, if necessary, in order to improve the releasability from the transfer layer. The release layer is removed from the transfer layer as a part of the support sheet when the support sheet is released. 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. Further, 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.

【0037】また、支持体シートには、転写層側の面に
凹凸模様を設ければ、転写後の転写層表面に砂目、梨
地、木目等の凹凸模様を賦形できる。凹凸模様は、エン
ボス加工、サンドブラスト加工、賦形層(離型層)によ
る盛り上げ印刷加工等の公知の方法で形成する。
If the support sheet is provided with a concavo-convex pattern on the surface on the transfer layer side, it is possible to form a concavo-convex pattern on the surface of the transfer layer after transfer, such as grain, satin finish, and wood grain. The concavo-convex pattern is formed by a known method such as embossing, sandblasting, and embossing printing using a shaping layer (release layer).

【0038】〔転写層:装飾層〕装飾層はグラビア印
刷、シルクスクリーン印刷、オフセット印刷等の従来公
知の方法、材料で絵柄等を印刷した絵柄層、アルミニウ
ム、クロム、金、銀等の金属を公知の蒸着法等を用いて
部分的或いは全面に形成した金属薄膜層等であり、用途
に合わせたものを用いる。絵柄としては、被転写基材の
表面凹凸に合わせて、木目模様、石目模様、布目模様、
タイル調模様、煉瓦調模様、皮絞模様、文字、幾何学模
様、全面ベタ等を用いる。なお、絵柄層用インキは、一
般的なインキ同様に、バインダー等からなるビヒクル、
顔料や染料等の着色剤、これに適宜加える各種添加剤か
らなる。バインダーには、アクリル樹脂、塩化ビニル−
酢酸ビニル共重合体、ポリエステル樹脂、セルロース系
樹脂、ポリウレタン樹脂、フッ素樹脂等の単体又はこれ
らを含む混合物を用いる。着色剤としては、チタン白、
カーボンブラック、弁柄、黄鉛、群青等の無機顔料、ア
ニリンブラック、キナクリドン、イソインドリノン、フ
タロシアニンブルー等の有機顔料、二酸化チタン被覆雲
母の箔粉等の光輝性顔料、或いはその他染料等を用い
る。
[Transfer Layer: Decorative Layer] The decorative layer is made of a conventionally known method such as gravure printing, silk screen printing, offset printing, or the like, a pattern layer obtained by printing a pattern or the like with a material, a metal such as aluminum, chromium, gold, or silver. A metal thin film layer or the like formed partially or over the entire surface by using a known vapor deposition method or the like. As the pattern, according to the surface irregularities of the transferred substrate, wood pattern, stone pattern, cloth pattern,
Tile patterns, brick patterns, leather squeezing patterns, letters, geometric patterns, solid colors, etc. are used. In addition, the ink for the pattern layer is, similarly to a general ink, a vehicle made of a binder or the like,
It comprises a coloring agent such as a pigment or a dye, and various additives appropriately added thereto. Acrylic resin, vinyl chloride-
A simple substance such as a vinyl acetate copolymer, a polyester resin, a cellulosic resin, a polyurethane resin, a fluororesin, or a mixture containing these is used. As coloring agents, titanium white,
Use inorganic pigments such as carbon black, red iron oxide, graphite, ultramarine blue, etc., organic pigments such as aniline black, quinacridone, isoindolinone, phthalocyanine blue, etc., glitter pigments such as titanium dioxide-coated mica foil powder, or other dyes. .

【0039】〔転写層:剥離層等〕また、剥離層を、支
持体乃至は離型層と装飾層との間の離型性を調整する
為、また、転写後の装飾層の表面保護、後塗装による上
塗り層の密着性向上の為等に、これら層間に設けるの
は、従来公知の転写シートと同様である。剥離層には、
例えば、上記絵柄層用インキのバインダーに用いる樹脂
等が用いられる。なお、この剥離層は転写時に装飾層と
共に被転写基材側に転写され、装飾層の表面を被覆す
る。
[Transfer Layer: Release Layer, etc.] The release layer is used to adjust the releasability between the support or the release layer and the decorative layer, and to protect the surface of the decorative layer after transfer. The provision of an interlayer between these layers for the purpose of improving the adhesion of the overcoat layer by post-coating or the like is the same as that of a conventionally known transfer sheet. In the release layer,
For example, a resin or the like used as a binder for the above-described ink for a picture layer is used. The release layer is transferred to the transfer-receiving substrate together with the decorative layer during transfer, and covers the surface of the decorative layer.

【0040】固体粒子衝突圧による曲面転写方法 固体粒子衝突圧を転写圧に用いるこの曲面転写方法は、
特開平9−315095号公報に開示された様に、転写
圧の押圧手段自体が新規な転写法である。この転写法
は、平面はもちろん、ローラ転写法等では不可能な表面
凹凸にも転写できる転写法として優れた転写方法であ
る。
Surface Transfer Method Using Solid Particle Impact Pressure This curved surface transfer method using the solid particle impact pressure as the transfer pressure is as follows.
As disclosed in Japanese Patent Application Laid-Open No. 9-315095, the transfer pressure pressing means itself is a novel transfer method. This transfer method is an excellent transfer method that can transfer not only flat surfaces but also surface irregularities that cannot be obtained by a roller transfer method or the like.

【0041】すなわち、この曲面転写方法は、図1の概
念図で示す如く、表面に凹凸形状を有する被転写基材B
の凹凸表面側に(同図では被転写基材側の方に接着剤層
Aを設けてあるが、転写シート側やこれら両者に設けて
おいても良い)、転写シートSの転写層側を対向させ、
該転写シートの支持体シート側に多数の固体粒子Pを衝
突させ、その衝突圧を利用して、被転写基材の凹凸表面
への転写シートの圧接を行い、転写層が被転写基材に接
着後、転写シートの支持体シートを剥離除去すること
で、転写層を被転写基材に転写する転写法である。な
お、固体粒子Pに付記した矢印は、固体粒子の速度ベク
トルを表す。
That is, as shown in the conceptual diagram of FIG. 1, this curved surface transfer method employs a transfer base material B having an uneven surface.
(The adhesive layer A is provided on the side of the substrate to be transferred in the figure, but may be provided on the side of the transfer sheet or both of them). Facing
A large number of solid particles P collide against the support sheet side of the transfer sheet, and the pressure of the collision is used to press the transfer sheet against the uneven surface of the substrate to be transferred. This is a transfer method in which a transfer layer is transferred to a substrate to be transferred by peeling and removing a support sheet of a transfer sheet after bonding. The arrow added to the solid particles P indicates a velocity vector of the solid particles.

【0042】〔固体粒子〕固体粒子としては、ガラスビ
ーズ等の無機粒子、亜鉛、鉄等の金属粒子、ナイロンビ
ーズや架橋ゴムビーズ等の樹脂ビーズ等の有機粒子、或
いは金属等の無機粒子と樹脂とからなる無機物・樹脂複
合粒子等を使用する。粒子形状は球形状が好ましいが、
その他の形状でも用い得る。粒径は通常10〜1000
μm程度である。固体粒子は噴出器から転写シートに向
かって噴出させ、転写シートに衝突したその衝突圧が転
写圧となる。噴出器には、代表的には羽根車や吹出ノズ
ルを用いる。羽根車はその回転により固体粒子を加速
し、吹出ノズルは高速の流体流で固体粒子を加速する。
羽根車や吹出ノズルには、サンドブラスト或いはショッ
トブラスト、ショットピーニング等とブラスト分野にて
使用されているものを流用できる。例えば羽根車には遠
心式ブラスト装置、吹出ノズルには加圧式や吸引式ブラ
スト装置、ウェットブラスト装置等である。遠心式ブラ
スト装置は羽根車の回転力で固体粒子を加速し噴出す
る。加圧式ブラスト装置は、圧縮空気に混合しておいて
固体粒子を、空気と共に噴出する。吸引式ブラスト装置
は、圧縮空気の高速流で生ずる負圧部に固体粒子を吸い
込み、空気と共に噴出する。ウェットブラスト装置は、
固体粒子を液体と混合して噴出する。
[Solid Particles] Solid particles include inorganic particles such as glass beads, metal particles such as zinc and iron, organic particles such as resin beads such as nylon beads and crosslinked rubber beads, or inorganic particles such as metal and resin. Inorganic / resin composite particles made of Although the particle shape is preferably spherical,
Other shapes may be used. Particle size is usually 10-1000
It is about μm. The solid particles are ejected from the ejector toward the transfer sheet, and the collision pressure that collides with the transfer sheet becomes the transfer pressure. Typically, an impeller or a blowing nozzle is used for the ejector. The impeller accelerates the solid particles by its rotation, and the blowing nozzle accelerates the solid particles with a high-speed fluid flow.
Sandblasting, shot blasting, shot peening and the like used in the blasting field can be used for the impeller and the blowing nozzle. For example, a centrifugal blast device is used for the impeller, and a pressurized or suction blast device, a wet blast device, or the like is used for the blowing nozzle. The centrifugal blast device accelerates and ejects solid particles by the rotational force of the impeller. A pressurized blasting device ejects solid particles together with air while being mixed with compressed air. The suction-type blast device sucks solid particles into a negative pressure portion generated by a high-speed flow of compressed air, and ejects the solid particles together with the air. Wet blasting equipment
The solid particles are mixed with the liquid and ejected.

【0043】〔噴出器〕図3及び図4は、羽根車による
噴出器の一例を示す概念図である。羽根車812は、複
数の羽根813がその両側を2枚の側面板814で固定
され、且つ回転中心部は羽根813が無い中空部815
となっている。更に、この中空部815内に方向制御器
816を内在する(図4参照)。方向制御器816は、
外周の一部が円周方向に開口した開口部817を有し中
空筒状で羽根車812の回転軸芯と同一回転軸芯で、羽
根車とは独立して回動自在となっている。羽根車使用時
は、方向制御器の開口部を適宜の方向に向くように固定
して、固体粒子の噴出方向を調整する。更に、この方向
制御器の内部に、内部中空で羽根車812の回転軸芯と
同一回転軸芯のもう一つの羽根車が散布器818として
内在する(図4参照)。散布器818は外側の羽根車8
12と共に回転する。そして、前記側面板814の回転
中心には回転軸819が固定され、回転軸819は、軸
受820で回転自在に軸支され電動機等の回転動力源
(図示略)によって駆動回転され、羽根車812が回転
する。また回転軸819は、羽根813を間に有する2
枚の側面板814間には貫通しておらず、軸無しの空間
を形成している。そして、散布器818の内部に固体粒
子Pがホッパ等から輸送管を通って供給される。通常、
固体粒子は、羽根車の上方(直上又は斜上方)から供給
する。散布器内に供給された固体粒子は散布器の羽根車
で外側に飛び散る。飛び散った固体粒子は、方向制御器
816の開口部817によって許された方向にのみ放出
され、外側の羽根車812の羽根813と羽根813と
の間に供給される。そして、羽根813に衝突し、羽根
車812の回転力で加速され、羽根車から噴出する。羽
根車812の寸法は、通常直径5〜60cm程度、羽根
の幅は5〜20cm程度、羽根の長さは、ほぼ羽根車の
直径程度、羽根車の回転数は500〜5000〔rp
m〕程度である。固体粒子の噴出速度は10〜50〔m
/s〕程度、投射密度(基材単位面積当たりに衝突させ
る固体粒子の総重量)は10〜150〔kg/m2 〕程
度である。
[Ejector] FIGS. 3 and 4 are conceptual diagrams showing an example of an ejector using an impeller. The impeller 812 includes a plurality of blades 813 fixed on both sides thereof by two side plates 814, and a rotation center at a hollow portion 815 having no blades 813.
It has become. Further, a direction controller 816 is provided inside the hollow portion 815 (see FIG. 4). The direction controller 816 includes:
A part of the outer periphery has an opening 817 that is open in the circumferential direction, is a hollow cylindrical shape, has the same rotation axis as the rotation axis of the impeller 812, and is rotatable independently of the impeller. When using the impeller, the opening of the direction controller is fixed so as to face an appropriate direction, and the ejection direction of the solid particles is adjusted. Further, inside the directional controller, another impeller having a hollow inside and the same rotation axis as the rotation axis of the impeller 812 is provided as a sprayer 818 (see FIG. 4). The sprayer 818 is the outer impeller 8
Rotates with 12. A rotating shaft 819 is fixed to the center of rotation of the side plate 814. The rotating shaft 819 is rotatably supported by a bearing 820, and is driven and rotated by a rotating power source (not shown) such as an electric motor. Rotates. The rotating shaft 819 has a blade 813 between them.
It does not penetrate between the side plates 814 and forms a space without a shaft. Then, the solid particles P are supplied into the sprayer 818 from a hopper or the like through a transport pipe. Normal,
The solid particles are supplied from above (directly or obliquely above) the impeller. The solid particles supplied into the sprayer are scattered outward by the impeller of the sprayer. The scattered solid particles are emitted only in the direction allowed by the opening 817 of the direction controller 816 and supplied between the blades 813 of the outer impeller 812. Then, it collides with the impeller 813, is accelerated by the rotational force of the impeller 812, and ejects from the impeller. The dimensions of the impeller 812 are usually about 5 to 60 cm in diameter, the width of the impeller is about 5 to 20 cm, the length of the impeller is about the diameter of the impeller, and the rotation speed of the impeller is 500 to 5000 [rpm].
m]. The ejection speed of solid particles is 10 to 50 [m
/ S], and the projection density (total weight of solid particles colliding per unit area of the base material) is about 10 to 150 [kg / m 2 ].

【0044】次に、図5は吹出ノズルを用いた噴出器の
一例を示す概念図である。同図の噴出器840は固体粒
子加速流体として空気等の気体を用い、固体粒子噴出時
に該気体と固体粒子を混合して噴出する形態の噴出器の
一例である。噴出器840は、固体粒子Pと流体Fを混
合する誘導室841と、誘導室内に流体を噴出する内部
ノズル842と、ノズル開口部843から固体粒子及び
流体を噴出する吹出ノズル部844からなる。圧縮機等
からの加圧状態の流体Fを、内部ノズル842から噴出
し誘導室841を経てノズル844のノズル開口部84
3から噴出する際に、噴出器内の誘導室841にて、高
速で流れる流体流の作用で負圧を作り、この負圧により
固体粒子を流体流に導き混合し、流体流で固体粒子を加
速、搬送して、ノズル844のノズル開口部843から
流体流と共に噴出するものである。なお、固体粒子加速
流体に液体を用いる吹出ノズル等もある。流体圧は吹付
圧力で通常0.1〜10kg/cm2 程度である。流体
流の流速は、液流では通常1〜20m/秒程度、気流で
は通常5〜80m/秒程度である。
Next, FIG. 5 is a conceptual diagram showing an example of an ejector using an ejection nozzle. An ejector 840 shown in the figure is an example of an ejector in which a gas such as air is used as a solid particle accelerating fluid, and the gas and the solid particles are mixed and ejected when ejecting the solid particles. The ejector 840 includes an induction chamber 841 that mixes the solid particles P and the fluid F, an internal nozzle 842 that ejects the fluid into the induction chamber, and an ejection nozzle unit 844 that ejects the solid particles and the fluid from the nozzle opening 843. A fluid F in a pressurized state from a compressor or the like is ejected from an internal nozzle 842, passes through an induction chamber 841 and passes through a nozzle opening 84 of a nozzle 844.
3, a negative pressure is created by the action of a fluid flow flowing at a high speed in the guide chamber 841 in the ejector, and the negative pressure guides and mixes the solid particles into the fluid flow, thereby forming the solid particles in the fluid flow. It accelerates, conveys, and jets out together with the fluid flow from the nozzle opening 843 of the nozzle 844. In addition, there is a blowing nozzle or the like that uses a liquid as a solid particle acceleration fluid. The fluid pressure is usually about 0.1 to 10 kg / cm 2 in spray pressure. The flow velocity of the fluid flow is usually about 1 to 20 m / sec for the liquid flow, and usually about 5 to 80 m / sec for the air flow.

【0045】〔噴出器の使用方法〕噴出器は、1個のみ
では加圧領域を所望の形状、大きさに出来ない場合は、
複数用いる。例えば、転写シート及び被転写基材の送り
方向に直交して幅方向に全幅を加圧領域とするには、幅
方向に一直線状に複数個を配置して、幅方向に直線状で
幅広の帯状形状の加圧領域とする。また、衝突圧印加時
間を長くするには、噴出器は、例えば転写シート及び被
転写基材の送り方向に向かって2列以上配置する多段配
置とする。複数個を配列時は、個々の噴出器の隣接する
加圧領域を互いに一部重複させることが好ましい。な
お、固体粒子の衝突圧は、例えば転写シート送り方向に
直交する幅方向の中央部が最大で、幅方向両端部に近い
程低下する山型圧力分布等と、不均一に設定することも
できる。この設定は、中央部から両端部に向かって順次
段階的に圧着を進行させ、内部に空気を抱き込むことを
防ぐ。もちろん、衝突圧は転写が完全に行える圧以上
で、且つ転写シートの歪み、被転写基材の変形、破損等
の生じない圧以下の適正圧力範囲内とする。
[How to use the ejector] If the pressurized area cannot be made into a desired shape and size with only one ejector,
Use multiple. For example, in order to make the entire width in the width direction perpendicular to the transfer direction of the transfer sheet and the transfer-receiving substrate, a plurality of pressure regions are arranged in a straight line in the width direction, and the width is linear and wide in the width direction. It is a band-shaped pressurized region. Further, in order to lengthen the collision pressure application time, the ejectors are arranged in a multi-stage arrangement in which, for example, two or more rows are arranged in the feed direction of the transfer sheet and the base material to be transferred. When a plurality are arranged, it is preferable that the adjacent pressurized regions of the individual ejectors partially overlap each other. The collision pressure of the solid particles can be set non-uniformly, for example, a peak-shaped pressure distribution or the like that is maximum in the width direction perpendicular to the transfer sheet feeding direction and decreases as it approaches the both ends in the width direction. . With this setting, the crimping is performed in a stepwise manner from the center to both ends to prevent the air from being trapped inside. It is needless to say that the collision pressure is within a proper pressure range that is equal to or higher than the pressure at which the transfer can be completely performed and is equal to or lower than the pressure at which the transfer sheet is not deformed, the base material to be transferred is not deformed or damaged.

【0046】また、複数の噴出器を用いる場合、被転写
基材の被転写面の包絡面(の搬送方向に直交する断面形
状)が例えば円型になる円筒状の凸曲面であれば、各噴
出器が主とし受け持つ個別の衝突面に対して、略垂直に
固体粒子が衝突する様に、噴出器の向きを、近接する被
転写基材の包絡面法線方向をカバーする様に複数配置す
ることもできる。
When a plurality of ejectors are used, if the envelope surface of the transfer surface of the transfer substrate (the cross-sectional shape perpendicular to the transport direction) is, for example, a cylindrical convex curved surface having a circular shape, Multiple ejectors are arranged so as to cover the normal direction of the envelope surface of the adjacent substrate to be transferred, so that the solid particles collide almost perpendicularly with the individual collision surfaces that the ejector mainly handles. You can also.

【0047】〔実際的な転写方法〕また、実際に固体粒
子を用いて転写する際は、固体粒子は周囲の雰囲気中に
飛散させずに且つ循環再利用するのが好ましい。そこ
で、転写する空間を周囲空間と隔離するチャンバ内で、
固体粒子を転写シートに衝突させて転写圧を加える等す
ると良い。支持体シートの剥離は、チャンバ外でも良
い。支持体シートの剥離は、転写層が被転写基材に密着
し、支持体シートが破れたりせずに剥離可能な状態にな
れば、固体粒子衝突圧の解除直後でも良いし、間を置い
てからでも良いからである。
[Practical Transfer Method] When transferring using solid particles, it is preferable that the solid particles be recycled without being scattered in the surrounding atmosphere. Therefore, in a chamber that separates the transfer space from the surrounding space,
It is preferable to apply a transfer pressure by causing the solid particles to collide with the transfer sheet. The peeling of the support sheet may be performed outside the chamber. Separation of the support sheet may be performed immediately after the solid particle collision pressure is released, or if the transfer layer is in close contact with the substrate to be transferred and the support sheet can be peeled without being torn. Because it is good.

【0048】また、好ましくは、予め熱可塑性樹脂の支
持体シートからなる転写シートは、赤外線輻射ヒータ等
で加熱軟化させて延伸性を付与し、被転写基材が熱容量
の大きい場合は予め予熱し、熱融着型の接着剤層として
作用させる層(場合によるが、接着剤層自身や装飾層
等)は、加熱活性化させた状態で固体粒子を転写シート
に衝突させる様にする。なお、熱融着により転写する場
合、熱融着する層を活性化して熱融着させる為に加熱す
るタイミングは、衝突圧印加前、衝突圧印加中、或いは
衝突圧印加前及び印加中などのいずれでも良い。加熱は
転写シートや被転写基材を加熱して行う。また、衝突圧
印加中の加熱には、加熱固体粒子や、固体粒子加速用の
流体を加熱流体として用いても良い。そして上記の場
合、転写シートが被転写基材が凹凸表面の場合はその表
面形状に追従し、成形され、転写層が被転写基材に十分
に接触すれば、冷風等の冷却手段で熱融着する層の冷却
を促進しても良い。冷風は、転写シート側や基材側から
吹き付ける。また、冷却手段として、冷却固体粒子、冷
却流体も用いることもできる。なお、冷却促進は、被転
写基材が凹凸表面の場合にその凹部内部にまで追従成形
された転写シートが衝突圧開放後に復元力がある場合に
戻るのも防止する。
Preferably, the transfer sheet composed of a support sheet of a thermoplastic resin is previously softened by heating with an infrared radiation heater or the like to impart stretchability. If the transfer substrate has a large heat capacity, it is preheated in advance. The layer that acts as a heat-fusible adhesive layer (the adhesive layer itself or a decoration layer, depending on the case) is made to collide solid particles with the transfer sheet in a heat-activated state. In the case of transferring by thermal fusion, the timing of heating to activate and thermally fuse the layer to be thermally fused may be before application of collision pressure, during application of collision pressure, or before and during application of collision pressure. Either is acceptable. The heating is performed by heating the transfer sheet or the substrate to be transferred. Further, for the heating during the application of the collision pressure, heated solid particles or a fluid for accelerating the solid particles may be used as the heating fluid. In the case described above, when the transfer sheet has a concave-convex surface, the transfer sheet follows the surface shape and is formed. When the transfer layer is sufficiently in contact with the transfer substrate, the transfer sheet is thermally fused by cooling means such as cold air. Cooling of the layer to be deposited may be promoted. Cold air is blown from the transfer sheet side or the base material side. In addition, cooling solid particles and cooling fluid can also be used as cooling means. The promotion of cooling also prevents the transfer sheet formed following the concave portion from returning to the case where there is a restoring force after releasing the collision pressure, when the substrate to be transferred has an uneven surface.

【0049】なお、転写温度は、転写製品の環境温度
(通常80℃以下)で接着剤の軟化、粘着化を防ぐよう
に接着温度を設定する為、また通常、転写で使われる支
持体シートの樹脂の軟化温度(Vicat軟化温度で、
塩化ビニル樹脂は83℃、ポリエチレンは90〜135
℃、ポリプロピレンは145〜150℃等)を考慮し
て、通常80℃以上に設定される。
The transfer temperature is set at the environmental temperature of the transfer product (usually 80 ° C. or lower) so as to set the adhesive temperature so as to prevent the adhesive from softening and sticking. Softening temperature of resin (Vicat softening temperature,
83 ° C for vinyl chloride resin, 90-135 for polyethylene
C. and 145-150 ° C. for polypropylene) are usually set to 80 ° C. or higher.

【0050】後塗装 なお、転写後の化粧材等の転写製品は、そのままでも良
いが、その表面に更に透明保護層等の上塗り層を塗装法
等で形成すれば、耐久性、意匠感等を付与できる点で好
ましい。特に、本発明では後塗装適性を考慮した接着剤
を使用するので、なおさらである。上塗り層は、用途、
要求物性に応じた層とすれば良い。この様な上塗り層と
しては、例えば、ポリ4フッ化エチレン、ポリフッ化ビ
ニリデン等のフッ素樹脂、ポリメタクリル酸メチル等の
アクリル樹脂、シリコーン樹脂、ウレタン樹脂等の1種
又は2種以上をバインダーの樹脂として、更に必要に応
じて、ベンゾトリアゾール、超微粒子酸化セリウム等の
紫外線吸収剤、ヒンダードアミン系ラジカル捕捉剤等の
光安定剤、着色顔料、体質顔料、シリカ、球状α−アル
ミナ、鱗片状α−アルミナ等の粒子からなる減摩剤、ワ
ックス等の滑剤等を添加した塗料を用いる。塗装はスプ
レー塗装、カーテンフローコート、軟質ゴムロールやス
ポンジロール等を使用したロールコート等の公知の塗工
法で行えば良い。上塗り層の厚さは1〜100μm程度
である。また、上塗り層塗装時の乾燥は、通常最大15
0℃程度までの範囲で行う。そして、上塗り層の加熱乾
燥(或いは加熱硬化)時には、前述した2液硬化型接着
剤の硬化反応を進めて完結させる事もできる。
Post-coating The transferred product such as a cosmetic material after the transfer may be used as it is. However, if an overcoating layer such as a transparent protective layer is further formed on the surface by a coating method or the like, durability and a sense of design, etc. may be improved. It is preferable in that it can be applied. In particular, the present invention uses an adhesive in consideration of suitability for post-coating, which is even more so. The overcoat layer is used for
What is necessary is just to make a layer according to required physical properties. As such an overcoat layer, for example, one or two or more of a fluororesin such as polytetrafluoroethylene and polyvinylidene fluoride, an acrylic resin such as polymethyl methacrylate, a silicone resin, and a urethane resin are used as a binder resin. As further necessary, benzotriazole, ultraviolet absorbers such as ultrafine cerium oxide, light stabilizers such as hindered amine radical scavengers, coloring pigments, extender pigments, silica, spherical α-alumina, flaky α-alumina A paint containing a lubricant such as particles, a lubricant such as wax, or the like is used. The coating may be performed by a known coating method such as spray coating, curtain flow coating, roll coating using a soft rubber roll, sponge roll, or the like. The thickness of the overcoat layer is about 1 to 100 μm. In addition, drying when coating the top coat layer is usually up to 15
This is performed in a range up to about 0 ° C. When the upper coating layer is heated and dried (or cured by heating), the curing reaction of the two-part curable adhesive described above can be advanced to complete the reaction.

【0051】化粧材 ここで、本発明の化粧材について、その一形態に於ける
層構成を、図8の要部断面図で説明する。図8(A)の
如く、本発明の化粧材Dは、表面に凹凸形状を有する被
転写基材Bに、接着剤Aを介して少なくとも装飾層から
なる転写層2が転写形成され、且つ該接着剤がアクリル
系樹脂からなるアクリル系接着剤であり、そのアクリル
系樹脂のガラス転移温度が20℃以下で重量平均分子量
が100,000以上である構成の化粧材である。転写
不良による外観欠陥が無く、凹凸表面と転写層による装
飾とで、意匠性に優れた化粧材が可能となる。しかも、
後塗装適性も良好である。この場合、該アクリル系接着
剤は、硬化剤を含む2液硬化型接着剤とするとより好ま
しい。後塗装的性や転写層の密着性及びその耐熱性に優
れるからである。最終製品である化粧材においては、も
ちろん、上記2液硬化型接着剤は硬化物となっている。
[0051] Here the decorative material, the decorative material of the present invention, the in layer configuration on one embodiment will be described in fragmentary cross-sectional view of FIG. As shown in FIG. 8 (A), in the decorative material D of the present invention, a transfer layer 2 composed of at least a decorative layer is transferred and formed via an adhesive A to a transfer-receiving substrate B having an uneven surface. An adhesive is an acrylic adhesive made of an acrylic resin, and the acrylic resin has a glass transition temperature of 20 ° C. or less and a weight average molecular weight of 100,000 or more. There is no appearance defect due to poor transfer, and the decorative material with the uneven surface and the transfer layer enables a decorative material excellent in design. Moreover,
Good post-painting suitability. In this case, the acrylic adhesive is more preferably a two-part curable adhesive containing a curing agent. This is because it is excellent in post-painting property, adhesion of the transfer layer and its heat resistance. In the cosmetic material as the final product, the two-component curable adhesive is of course a cured product.

【0052】また、本発明の化粧材としては、好ましく
は更に図8(B)の化粧材Dの如く、図8(A)の構成
に対して、転写層2上に更に上塗り層3が形成された構
成とする。接着剤が後塗装適性を有するので、後塗装品
としても、後塗装時の転写層の膨れによる外観不良の無
い、意匠性に優れた化粧材が可能となる。
Further, as the decorative material of the present invention, preferably, as shown in the decorative material D of FIG. 8B, an overcoat layer 3 is further formed on the transfer layer 2 in the structure of FIG. Configuration. Since the adhesive has post-coating suitability, it is possible to provide a cosmetic material excellent in design without any appearance defects due to swelling of the transfer layer during post-coating as a post-coated product.

【0053】なお、上記本発明の化粧材を得るには、好
ましくは前述した本発明の曲面転写方法によれば良い。
しかし、本発明の化粧材を得る為の方法は、この曲面転
写方法に限定されるものでは無い。例えば、凹凸表面に
転写できる方法であれば、真空成形積層方法を利用した
転写方法、ローラ転写法等の他の従来公知の方法でも良
い。本発明の化粧材の特徴である特定組成の接着剤によ
る、転写層を被転写面上で保持し繋ぎ止めておく凹凸固
定性の特徴が、相応に活かされた化粧材が得られる。
In order to obtain the decorative material of the present invention, it is preferable to use the above-described curved surface transfer method of the present invention.
However, the method for obtaining the decorative material of the present invention is not limited to this curved surface transfer method. For example, other conventionally known methods such as a transfer method using a vacuum forming and laminating method and a roller transfer method may be used as long as they can be transferred onto an uneven surface. A cosmetic material is obtained which makes use of the feature of the unevenness fixing property of holding and fixing the transfer layer on the surface to be transferred by the adhesive having the specific composition, which is a feature of the cosmetic material of the present invention.

【0054】〔転写製品の用途〕本発明の曲面転写方法
等で得られる本発明の化粧材、或いは本発明の曲面転写
方法で得られる本発明の化粧材等の転写製品の用途は、
転写された装飾面が凹凸面、特に三次元形状等の凹凸表
面の物品であるような各種用途に用いられ得る。例え
ば、化粧材の場合では、サイディング等の外壁、塀、屋
根、門扉、破風板等の外装、壁面、天井、床等の建築物
の内装、窓枠、扉、手摺、敷居、鴨居等の建具類の表面
化粧、箪笥等の家具やテレビ受像機等の弱電・OA機器
のキャビネットの表面化粧、自動車、電車、航空機、船
舶等の乗物内装材等の各種分野で用いられ得る。化粧材
は化粧板等として利用される。なお、化粧材も含めて転
写製品の形状は、平板、曲面板、棒状体、立体物等と任
意である。
[Uses of Transfer Product] The transfer material such as the cosmetic material of the present invention obtained by the curved surface transfer method of the present invention or the cosmetic material of the present invention obtained by the curved surface transfer method of the present invention is used.
The transferred decorative surface can be used for various applications such as an article having an uneven surface, particularly an uneven surface such as a three-dimensional shape. For example, in the case of cosmetics, exterior materials such as siding, exterior walls such as fences, roofs, gates, gable boards, wall interiors such as walls, ceilings and floors, window frames, doors, handrails, sills, doors and other fixtures It can be used in various fields such as surface makeup of furniture, furniture such as a chest of drawers, surface makeup of cabinets of light electric / OA equipment such as television receivers, and interior materials of vehicles such as automobiles, trains, aircraft, and ships. The decorative material is used as a decorative board or the like. In addition, the shape of the transfer product including the cosmetic material is arbitrary such as a flat plate, a curved plate, a rod-shaped body, and a three-dimensional object.

【0055】[0055]

【実施例】次に実施例により本発明を更に説明する。The present invention will be further described with reference to the following examples.

【0056】〔実施例1〕転写シートとしては、プロピ
レンとエチレンとのランダム共重合体からなる厚み80
μmの樹脂シートを支持体シートとして用意した。この
支持体シートの片面に、バインダーの樹脂がアクリル系
ウレタン樹脂で、これに無機系着色顔料として、酸化鉄
(黄色、及び茶色)、コバルトブルー、カーボンブラッ
ク及び酸化チタンを用いた着色インキで、3色刷りの石
目柄と、隠蔽ベタ層とからなる装飾層をグラビア印刷で
形成して、転写シートとした。
Example 1 A transfer sheet having a thickness of 80 consisting of a random copolymer of propylene and ethylene was used.
A μm resin sheet was prepared as a support sheet. On one side of the support sheet, the binder resin is an acrylic urethane resin, and as an inorganic color pigment, a coloring ink using iron oxide (yellow and brown), cobalt blue, carbon black and titanium oxide, A decorative layer composed of a three-color printing stone pattern and a concealed solid layer was formed by gravure printing to obtain a transfer sheet.

【0057】一方、被転写基材としては、板状で基材厚
さ15mmのセメント系の抄造プレスによるエンボス基
材を用意した。この被転写基材は、図6の斜視図の如き
タイル貼調の三次元的な表面凹凸形状で、図7の断面図
に示す如く、その大柄な凹部(目地溝)401は深さ5
mm、底部での幅10mm、側面の傾斜角度α70°で
ある。そして、大柄な凸部402上には微細な凹凸40
3として、深さが平均3mm(斜面の傾斜は45°以下
の不規則な傾斜)の不規則に分布した凹凸を有する。な
お、転写すべき部分は、目地溝となる大柄な凹部401
内は非転写部として、大柄な凸部402(及びその上の
微細な凹凸403)を転写部とした。そして、この被転
写基材の凹凸表面には、目止及び下地色調整の為に、予
め、白色のウレタン系樹脂塗料をスプレー塗工して下塗
り層を形成しておいた。
On the other hand, as a substrate to be transferred, a plate-shaped embossed substrate made of a cement papermaking press having a substrate thickness of 15 mm was prepared. The transfer-receiving substrate has a three-dimensional surface irregularity of tiled tone as shown in the perspective view of FIG. 6, and as shown in the sectional view of FIG. 7, the large concave portion (joint groove) 401 has a depth of 5
mm, the width at the bottom is 10 mm, and the inclination angle α of the side surface is 70 °. Then, the fine unevenness 40 is formed on the large convex portion 402.
No. 3 has irregularities distributed irregularly with an average depth of 3 mm (the slope of the slope is an irregular slope of 45 ° or less). The portion to be transferred is a large recess 401 serving as a joint groove.
The inside is a non-transferred part, and the large convex part 402 (and the fine irregularities 403 thereon) are used as the transfer part. Then, an undercoat layer was previously formed on the uneven surface of the transfer-receiving substrate by spray coating a white urethane-based resin paint for sealing and adjusting the base color.

【0058】そして、転写は、先ず被転写基材に接着剤
をスプレー塗布した。接着剤は、表1に示す如き内容の
ガラス転移温度及び重量平均分子量のアクリル系樹脂
(アクリルポリオール)を主剤として、これに硬化剤と
してイソシアネート(HMDI系イソシアネートでトリ
メチロールプロパンを使用したアダクトタイプ、日本ポ
リウレタン株式会社製、コロネートHL)を、イソシア
ネート基とアクリル系樹脂の水酸基とが等量となる割合
で配合し、酢酸ブチルで希釈した溶液形態の2液硬化型
接着剤を用いた。ちなみに、実施例1で用いた接着剤の
アクリル系樹脂は、ガラス転移温度0℃、重量平均分子
量10万、水酸基価30の樹脂である。そして、接着剤
塗布後、熱風乾燥炉で150℃1分間、加熱乾燥して、
希釈溶剤の乾燥と共に、被転写基材(その上の接着剤
層)を80℃に加熱した。なお、接着剤層は、固形分基
準の塗布量で15g/m2 に形成した。
For the transfer, first, an adhesive was spray-coated on the substrate to be transferred. The adhesive is an adduct type using an acrylic resin (acrylic polyol) having a glass transition temperature and a weight average molecular weight having the contents shown in Table 1 as a main component, and using isocyanate as a curing agent (HMDI-based isocyanate using trimethylolpropane); Nippon Polyurethane Co., Ltd., Coronate HL) was mixed at a ratio such that isocyanate groups and hydroxyl groups of the acrylic resin were equivalent, and a two-part curable adhesive in the form of a solution diluted with butyl acetate was used. Incidentally, the acrylic resin of the adhesive used in Example 1 is a resin having a glass transition temperature of 0 ° C., a weight average molecular weight of 100,000 and a hydroxyl value of 30. Then, after applying the adhesive, it is heated and dried in a hot air drying furnace at 150 ° C. for 1 minute,
With the drying of the dilution solvent, the substrate to be transferred (the adhesive layer thereon) was heated to 80 ° C. The adhesive layer was formed at a coating amount of 15 g / m 2 on a solid content basis.

【0059】上記加熱された被転写基材(及び接着剤
層)上に前記転写シートを載置した後、これらをベルト
コンベアで搬送しつつ、熱風加熱して被転写基材(及び
接着剤層)の温度を85℃に調整した後、転写圧として
固体粒子衝突圧を転写圧として転写シートの支持体シー
ト側に与えて、転写した。噴出器には図3及び図4の様
な羽根車を用いた噴出器を使用した。そして、ベルトコ
ンベアで搬送中の被転写基材及び転写シートに対し、噴
出器から固体粒子を転写シートの支持体シート側に衝突
させて衝突圧を印加して、転写シートを被転写基材の凹
凸表面に押圧した。なお、固体粒子としては平均粒径
0.4mmの球形の亜鉛球を用い、固体粒子の噴出速度
は35〔m/s〕とした。そして、25℃の冷風で冷却
して、接着剤の熱融着による初期接着で転写シートが被
転写基材に接着した後、支持体シートを剥がし取った。
更に、転写後の転写層の表面に、フッ素系樹脂からなる
2液硬化型の溶剤系塗料(大日本塗料株式会社製、商品
名「Vフロン」)を、スプレー塗布後、熱風乾燥炉で1
50℃1分間加熱乾燥し、乾燥時塗布量60g/m2
透明保護層を形成して、透明保護層付きの化粧材を得
た。その後更に40℃のオーブン中に3日間放置して養
生して、接着剤を完全硬化させて最終接着し、転写製品
として化粧材を得た。性能評価結果は表1に各実施例及
び比較例を纏めて示す。
After the transfer sheets are placed on the heated transfer-receiving substrate (and the adhesive layer), the transfer sheets are heated by hot air while being conveyed on a belt conveyor, and are transferred to the transfer-receiving substrate (and the adhesive layer). ) Was adjusted to 85 ° C., and the transfer pressure was applied to the support sheet side of the transfer sheet by using the solid particle collision pressure as the transfer pressure for transfer. An ejector using an impeller as shown in FIGS. 3 and 4 was used as the ejector. Then, against the transfer target substrate and the transfer sheet being conveyed by the belt conveyor, solid particles collide against the support sheet side of the transfer sheet from the ejector and a collision pressure is applied, and the transfer sheet is transferred to the transfer target substrate. Pressed on the uneven surface. In addition, spherical zinc spheres having an average particle diameter of 0.4 mm were used as the solid particles, and the ejection speed of the solid particles was 35 [m / s]. Then, the substrate was cooled with cold air at 25 ° C., and the support sheet was peeled off after the transfer sheet was adhered to the substrate to be transferred by initial bonding by heat fusion of the adhesive.
Further, on the surface of the transfer layer after the transfer, a two-component curable solvent-based paint (trade name "V-Flon" manufactured by Dainippon Paint Co., Ltd.) made of a fluororesin is spray-applied and then heated in a hot-air drying oven.
The coating was dried by heating at 50 ° C. for 1 minute to form a transparent protective layer having a coating amount of 60 g / m 2 when dried, thereby obtaining a decorative material having a transparent protective layer. Thereafter, it was left to cure in an oven at 40 ° C. for 3 days, and the adhesive was completely cured and finally bonded to obtain a cosmetic material as a transfer product. The performance evaluation results are shown in Table 1 collectively for each example and comparative example.

【0060】〔実施例2〜4〕実施例1に於いて、接着
剤中のアクリル系樹脂を表1の如く変更した他は、実施
例1と同様にして、それぞれの化粧材を得た。
[Examples 2 to 4] Each cosmetic material was obtained in the same manner as in Example 1 except that the acrylic resin in the adhesive was changed as shown in Table 1.

【0061】〔比較例1〜4〕実施例1に於いて、接着
剤中のアクリル系樹脂を表1の如く変更した他は、実施
例1と同様にして、それぞれの化粧材を得た。
[Comparative Examples 1 to 4] Each cosmetic material was obtained in the same manner as in Example 1 except that the acrylic resin in the adhesive was changed as shown in Table 1.

【0062】〔性能比較〕転写性と後塗装適性につい
て、次の様にして評価した。 転写性:目視にて化粧材の転写層の状態を観察し評価
した。転写すべき部分に転写層が転写せず被転写基材上
に浮いた状態でも残留していない部分が認められるもの
は×、転写層の浮きが多いのものは△×、転写層の浮き
が中程度のものは△、転写層の浮きが少ないものは○
△、転写層の浮きが無く完全に転写しているものは○と
した。なお、転写部は、目地部を除く大柄な凸部上の微
細な凹凸部分であるが、転写浮きは微細な凹凸の深い凹
部の部分に発生し易い。転写シートを圧着時、接着剤の
接着力が弱いと、転写層が接着剤層に付着せず、転写層
が浮く形になる。但し、用いた転写シートの剥離強度は
弱いため、転写抜けにはならない。 後塗装適性:目視にて転写層の外観変化を観察し評価
した。表面膨れ発生が多いものは×、膨れ発生が中程度
は△、膨れ発生が軽微は○△、膨れ発生が無く変化無き
ものは○とした。
[Comparison of Performance] Transferability and suitability for post-coating were evaluated as follows. Transferability: The state of the transfer layer of the decorative material was visually observed and evaluated. If the transfer layer is not transferred to the part to be transferred and there is a part that does not remain even when it floats on the substrate to be transferred, x indicates that the transfer layer has a lot of floating, and x indicates that the transfer layer has a lot of floating.中 for medium-sized ones, ○ for less floating transfer layer
、, those in which the transfer layer was completely transferred without lifting of the transfer layer were evaluated as ○. The transfer portion is a fine uneven portion on a large convex portion excluding the joint portion, but the transfer floating is likely to occur in a deep concave portion of the fine unevenness. When the transfer sheet is pressed, if the adhesive strength of the adhesive is weak, the transfer layer does not adhere to the adhesive layer and the transfer layer floats. However, since the peel strength of the used transfer sheet is weak, the transfer does not occur. Post-coating suitability: The appearance change of the transfer layer was visually observed and evaluated. The sample having a large amount of surface swelling was evaluated as x, the medium swelling was evaluated as medium, the swelling was slight as △, and the sample without swelling was evaluated as ○.

【0063】[0063]

【表1】 [Table 1]

【0064】表1の如く、各実施例では、転写性及び後
塗装適性は○、又は○△で良好であるが、各比較例で
は、これら両方は満足しない。特に比較例1では、転写
性と後塗装適性の両者共に×で不良である。一方、比較
例2〜4では、転写性は○、又は○△で良好だが、後塗
装適性が×で不良である。もちろん、後塗装適性が不要
ならば、比較例2〜4の条件でも良いが、表面物性の強
い転写製品は得にくい。なお、実施例として得られた化
粧材は、2液硬化型としたアクリル系接着剤によって、
転写層が強固に被転写基材に接着し、しかも、後塗装し
た透明保護層によって耐擦傷性、耐汚染性等の表面物性
に優れ、高意匠感の化粧材であった。
As shown in Table 1, in each of Examples, the transferability and post-coating suitability were good in ○ or △, but in Comparative Examples, both were not satisfied. In particular, in Comparative Example 1, both the transferability and the suitability for post-coating were poor with x. On the other hand, in Comparative Examples 2 to 4, the transferability was good in ○ or △, but the post-coating suitability was poor in x. Of course, if post-painting suitability is not required, the conditions of Comparative Examples 2 to 4 may be used, but it is difficult to obtain a transfer product having strong surface properties. In addition, the cosmetic material obtained as an example is a two-part curable acrylic adhesive.
The transfer layer was firmly adhered to the substrate to be transferred, and the post-coated transparent protective layer was excellent in surface properties such as scratch resistance and stain resistance, and was a highly decorative cosmetic material.

【0065】〔最適反応率試験〕上記実施例1及び実施
例4で用いた2液硬化型のアクリル系接着剤にて、転写
シート圧接時の接着剤の最適な反応率範囲を確認すべ
く、反応率と転写性の関係について、実施例1同様にし
て化粧材を作製して試験した。試験は、転写シートを被
転写基材に圧接前の、被転写基材(及びその上に施した
接着剤)の加熱(予熱)時間を振って、不完全硬化の程
度として反応率(反応率自体は不完全硬化の程度とは逆
関係となる)を各種変えて、転写性の変化を評価した。
転写性は、上記の転写性の評価方法による。表2に、
試験1〜試験8に於ける、それぞれの接着剤内容、接着
剤の反応率、転写性を纏めて示す。なお、反応率は、試
験1〜試験8と各々同条件で作製した不完全硬化状態の
接着剤を赤外線全反射スペトクル法により測定測定し
た。
[Optimal Reaction Rate Test] In order to confirm the optimum reaction rate range of the two-component curable acrylic adhesive used in Examples 1 and 4 above when the transfer sheet was pressed against the adhesive, For the relationship between the reaction rate and the transferability, a cosmetic material was prepared and tested in the same manner as in Example 1. In the test, the heating (preheating) time of the transfer substrate (and the adhesive applied thereon) before pressing the transfer sheet against the transfer substrate was varied, and the reaction rate (reaction rate) was determined as the degree of incomplete curing. (Which itself is inversely related to the degree of incomplete curing), and the change in transferability was evaluated.
The transferability is based on the above-described method for evaluating transferability. In Table 2,
The contents of each adhesive, the reaction rate of the adhesive, and the transferability in Tests 1 to 8 are shown together. The reaction rate was measured by measuring the incompletely cured adhesive prepared under the same conditions as in Tests 1 to 8 by an infrared total reflection spectroscopy method.

【0066】[0066]

【表2】 [Table 2]

【0067】その結果、ガラス転移温度20℃のアクリ
ル系樹脂の場合(試験1〜3)は、反応率が30%を越
えると転写性が得られなくなる。一方、それよりもガラ
ス転移温度が0℃と低いアクリル系樹脂の場合(試験4
〜7)では、樹脂が前者よりも柔らかくなるので、反応
率30%程度では転写可能であるが、反応率が55%な
どと更に高くなると転写性が損なわれることが分かる。
この様に、ガラス転移温度及び重量平均分子量が規定の
アクリル系樹脂を使用しても、それを2液硬化型接着剤
として使用する場合には、接着剤の感熱乾燥時の熱で硬
化反応が進み過ぎれば、融着力が低下し、転写性が低下
するので、硬化反応は進み過ぎない様に使用すれば良い
事が確認できる。
As a result, in the case of an acrylic resin having a glass transition temperature of 20 ° C. (tests 1 to 3), if the reaction rate exceeds 30%, transferability cannot be obtained. On the other hand, in the case of an acrylic resin having a lower glass transition temperature of 0 ° C. (Test 4
In (7) to (7), the resin is softer than the former, so that the resin can be transferred at a reaction rate of about 30%. However, when the reaction rate is as high as 55%, the transferability is impaired.
As described above, even when an acrylic resin having a prescribed glass transition temperature and weight average molecular weight is used, when it is used as a two-part curable adhesive, the curing reaction is caused by heat during heat-sensitive drying of the adhesive. If the curing reaction proceeds too much, the fusing force decreases and the transferability decreases, so it can be confirmed that the curing reaction should be used so that the curing reaction does not proceed too much.

【0068】[0068]

【発明の効果】本発明の曲面転写方法によれば、固体
粒子衝突圧を転写圧に用い且つ特定組成の接着剤を使用
するので、転写シートを表面凹凸形状に追従させて接触
させ得る凹凸追従性と、表面凹凸形状に追従し一旦接触
した後に接着剤が完全な接着力を発現する前でも転写層
を確実に繋ぎ止めておける凹凸固定性とが良好となる。
その結果、凹凸表面へも確実に転写できる転写方法とな
る上に、しかも後塗装時に接着剤が溶解したり膨潤して
転写層が浮く事が無く、後塗装適性にも優れた化粧材等
の転写製品が得られる。 また、接着剤を硬化剤を含む2液硬化型接着剤として
完全硬化前で使用すれば、得られる転写製品は後塗装適
性がより向上し、また転写層の被転写基材への接着力の
耐熱性も向上する。 本発明の化粧材によれば、上記本発明の曲面転写方法
等によって得られる構成とするので、転写不良による外
観欠陥が無く、凹凸表面と転写層による装飾とで、意匠
性に優れた化粧材が可能となる。しかも、後塗装適性も
良好である。また、使用するアクリル系を硬化剤を含む
2液硬化型接着剤の硬化物とすれば、後塗装適性はより
向上し、接着力の耐熱性も向上する。更に、転写層上に
上塗り層が形成すれば、接着剤が後塗装適性を有するの
で、後塗装品としても、後塗装時の転写層の膨れによる
外観不良の無い、意匠性に優れた化粧材が可能となる。
According to the curved surface transfer method of the present invention, since the solid particle collision pressure is used for the transfer pressure and an adhesive having a specific composition is used, the unevenness following the transfer sheet can be brought into contact with the surface uneven shape. The property and the fixability of the concave and convex portions that can securely hold the transfer layer even before the adhesive develops a complete adhesive force after being once contacted following the surface irregularities are improved.
As a result, in addition to being a transfer method that can reliably transfer to uneven surfaces, the adhesive does not dissolve or swell at the time of post-coating, and the transfer layer does not float, and it is excellent in post-coating suitability etc. A transfer product is obtained. In addition, if the adhesive is used as a two-part curable adhesive containing a curing agent before complete curing, the resulting transfer product will have better post-coating suitability, and will have an improved adhesion of the transfer layer to the substrate to be transferred. Heat resistance is also improved. According to the decorative material of the present invention, since it is configured to be obtained by the curved surface transfer method or the like of the present invention, there is no appearance defect due to poor transfer, and the decorative material is excellent in design with the uneven surface and the decoration by the transfer layer. Becomes possible. Moreover, the post-coating suitability is also good. Further, if the acrylic material used is a cured product of a two-component curable adhesive containing a curing agent, the suitability for post-coating is further improved, and the heat resistance of the adhesive force is also improved. Furthermore, if an overcoat layer is formed on the transfer layer, the adhesive has a suitability for post-coating. Therefore, as a post-coat product, a cosmetic material having excellent design without any appearance defects due to swelling of the transfer layer during post-coating. Becomes possible.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の曲面転写方法で採用する固体粒子衝突
圧を利用した転写法を説明する概念図。
FIG. 1 is a conceptual diagram illustrating a transfer method using solid particle collision pressure employed in a curved surface transfer method of the present invention.

【図2】転写性として、凹凸追従性と凹凸固定性を説明
する概念図。
FIG. 2 is a conceptual diagram illustrating unevenness followability and unevenness fixability as transferability.

【図3】羽根車を用いた噴出器の一例を概念的に説明す
る斜視図。
FIG. 3 is a perspective view conceptually illustrating an example of an ejector using an impeller.

【図4】図3の羽根車内部を説明する概念図。FIG. 4 is a conceptual diagram illustrating the inside of the impeller of FIG. 3;

【図5】吹出ノズルによる噴出器の一例を概念的に説明
する断面図。
FIG. 5 is a cross-sectional view conceptually illustrating an example of an ejector using an ejection nozzle.

【図6】被転写基材の三次元的な凹凸形状の凹凸表面の
一例を示す要部拡大斜視図。
FIG. 6 is an enlarged perspective view of a main part showing an example of a three-dimensional uneven surface of a transfer-receiving substrate.

【図7】被転写基材の凹凸形状の或る一例を示す要部断
面図。
FIG. 7 is an essential part cross-sectional view showing one example of a concave-convex shape of a transfer-receiving substrate.

【図8】本発明の化粧材の形態例を説明する要部断面
図。
FIG. 8 is a sectional view of an essential part for explaining an embodiment of the decorative material of the present invention.

【符号の説明】[Explanation of symbols]

1 支持体シート 2 転写層 3 上塗り層 401 大柄な凹部(溝状凹部) 402 大柄な凸部(平坦状凸部) 403 微細な凹凸 812 羽根車 813 羽根 814 側面板 815 中空部 816 方向制御器 817 開口部 818 散布器 819 回転軸 820 軸受 840 吹出ノズルを用いた噴出器 841 誘導室 842 内部ノズル 843 ノズル開口部 844 ノズル A 接着剤(接着剤層) B 被転写基材 D 化粧材 F 流体 P 固体粒子 S 転写シート α 溝状凹部の側面の傾斜角度 DESCRIPTION OF SYMBOLS 1 Support sheet 2 Transfer layer 3 Overcoat layer 401 Large concave part (groove-shaped concave part) 402 Large convex part (flat convex part) 403 Fine irregularities 812 Impeller 813 Blade 814 Side plate 815 Hollow part 816 Direction controller 817 Opening 818 Sprayer 819 Rotating shaft 820 Bearing 840 Jetting device using blowing nozzle 841 Induction chamber 842 Internal nozzle 843 Nozzle opening 844 Nozzle A Adhesive (adhesive layer) B Transferring substrate D Cosmetic material F Fluid P Solid Particle S Transfer sheet α Angle of inclination of side surface of groove-shaped recess

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2E110 AA57 AB04 AB22 AB23 AB32 BA12 BB02 BB23 EA09 GA04W GA32W 3B005 EA06 EB05 EB09 FA03 FA18 FB61 FE14 FE16 FG08Z GA17 4F100 AA21H AA23H AA37H AE01 AK17 AK25G AT00A AT00B BA02 BA03 BA07 BA10A BA10C CA02G CA13 CB00 CB02 CC00C DD05 DD06A EC04B EC042 EC182 EH46 EJ172 GB07 HB00 HB11 HB21 HB31 JA05G JA07G JJ03 JK06 YY00G  ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 2E110 AA57 AB04 AB22 AB23 AB32 BA12 BB02 BB23 EA09 GA04W GA32W 3B005 EA06 EB05 EB09 FA03 FA18 FB61 FE14 FE16 FG08Z GA17 4F100 AA21H AA23H AA37H AE01 BA02A00 AT02A00 CA13 CB00 CB02 CC00C DD05 DD06A EC04B EC042 EC182 EH46 EJ172 GB07 HB00 HB11 HB21 HB31 JA05G JA07G JJ03 JK06 YY00G

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 表面に凹凸形状を有する被転写基材に対
して、接着剤を間に介して、離型性を有する支持体シー
トに転写層として少なくとも装飾層を有する転写シート
の該支持体シート側に、固体粒子を衝突させ、その衝突
圧を利用して、転写シートを被転写基材の凹凸形状に追
従させ、転写層が被転写基材に接着後、支持体シートを
剥離除去することで、転写層を被転写基材に転写する曲
面転写方法において、 上記接着剤が、アクリル系樹脂からなるアクリル系接着
剤であり、且つ該アクリル系樹脂のガラス転移温度が2
0℃以下、重量平均分子量が100,000以上であ
る、曲面転写方法。
1. A support for a transfer sheet having at least a decorative layer as a transfer layer on a support sheet having releasability, with an adhesive interposed between a substrate to be transferred having an uneven shape on the surface. The solid particles collide with the sheet side, and the collision pressure is used to cause the transfer sheet to follow the uneven shape of the substrate to be transferred. After the transfer layer adheres to the substrate to be transferred, the support sheet is peeled off. Thus, in the curved surface transfer method for transferring the transfer layer to the transfer-receiving substrate, the adhesive is an acrylic adhesive made of an acrylic resin, and the glass transition temperature of the acrylic resin is 2
A curved surface transfer method wherein the temperature is 0 ° C. or less and the weight average molecular weight is 100,000 or more.
【請求項2】 アクリル系接着剤が、硬化剤を含む2液
硬化型接着剤であり、接着剤が少なくとも完全には硬化
していない状態で、固体粒子衝突圧により転写シートを
被転写基材の被転写面に接触させ、転写層が接着剤で被
転写基材に接着後、支持体シートを剥離除去する、請求
項1記載の曲面転写方法。
2. An acrylic adhesive is a two-part curable adhesive containing a curing agent, and a transfer sheet is transferred by a solid particle collision pressure in a state where the adhesive is not completely cured at least. The curved surface transfer method according to claim 1, wherein the support sheet is peeled off after the transfer layer is adhered to the transfer base material with an adhesive by an adhesive.
【請求項3】 表面に凹凸形状を有する被転写基材に、
接着剤を介して少なくとも装飾層からなる転写層が転写
形成された化粧材において、該接着剤がアクリル系樹脂
からなるアクリル系接着剤であり、且つ該アクリル系樹
脂のガラス転移温度が20℃以下、重量平均分子量が1
00,000以上である、化粧材。
3. A substrate to be transferred having an uneven shape on its surface,
In a decorative material on which at least a transfer layer composed of a decorative layer is formed by transfer via an adhesive, the adhesive is an acrylic adhesive composed of an acrylic resin, and the glass transition temperature of the acrylic resin is 20 ° C. or less. Having a weight average molecular weight of 1
Cosmetic material of not less than 00,000.
【請求項4】 アクリル系接着剤が、硬化剤を含む2液
硬化型接着剤の硬化物である、請求項3記載の化粧材。
4. The decorative material according to claim 3, wherein the acrylic adhesive is a cured product of a two-part curable adhesive containing a curing agent.
【請求項5】 転写層上に更に上塗り層が形成されてい
る、請求項3又は請求項4記載の化粧材。
5. The decorative material according to claim 3, wherein an overcoat layer is further formed on the transfer layer.
JP10337027A 1998-11-27 1998-11-27 Method for transferring curved surface and decorative material Withdrawn JP2000158895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10337027A JP2000158895A (en) 1998-11-27 1998-11-27 Method for transferring curved surface and decorative material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10337027A JP2000158895A (en) 1998-11-27 1998-11-27 Method for transferring curved surface and decorative material

Publications (1)

Publication Number Publication Date
JP2000158895A true JP2000158895A (en) 2000-06-13

Family

ID=18304776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10337027A Withdrawn JP2000158895A (en) 1998-11-27 1998-11-27 Method for transferring curved surface and decorative material

Country Status (1)

Country Link
JP (1) JP2000158895A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002014422A (en) * 2000-06-27 2002-01-18 Toppan Printing Co Ltd Transmission type screen
JP2008150837A (en) * 2006-12-15 2008-07-03 Osada Giken Co Ltd Surface treatment method for building or material thereof
JP2009281059A (en) * 2008-05-22 2009-12-03 Shimizu Corp Exterior panel
JP2019145809A (en) * 2019-03-29 2019-08-29 エーファウ・グループ・エー・タルナー・ゲーエムベーハー Method and device for coating product substrate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002014422A (en) * 2000-06-27 2002-01-18 Toppan Printing Co Ltd Transmission type screen
JP2008150837A (en) * 2006-12-15 2008-07-03 Osada Giken Co Ltd Surface treatment method for building or material thereof
JP2009281059A (en) * 2008-05-22 2009-12-03 Shimizu Corp Exterior panel
JP2019145809A (en) * 2019-03-29 2019-08-29 エーファウ・グループ・エー・タルナー・ゲーエムベーハー Method and device for coating product substrate

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