JP4297217B2

JP4297217B2 - Jig for molded product and method for decorating molded product

Info

Publication number: JP4297217B2
Application number: JP2004019646A
Authority: JP
Inventors: 徳泰岩坪; 利郎有賀; 敏夫山岸
Original assignee: DIC Corp
Current assignee: DIC Corp
Priority date: 2004-01-28
Filing date: 2004-01-28
Publication date: 2009-07-15
Anticipated expiration: 2024-01-28
Also published as: JP2005212186A

Description

本発明は、たとえば、浴室ユニットで使用される浴槽、カウンター、エプロン等のＦＲＰ製成形品等の化粧面を加飾する方法及びこの加飾方法に用いる成形品用治具に関する。 The present invention relates to a method for decorating a decorative surface such as an FRP molded product such as a bathtub, counter, or apron used in a bathroom unit, and a molded product jig used in this decoration method .

浴室ユニットで使用される浴槽、カウンター、エプロン等のＦＲＰ製成形品等の化粧面を加飾する方法として、予め加工成形した昇華転写シートを熱プレス印刷する方法が既に提案されている（たとえば、特許文献１参照）。
しかしながら、上記昇華転写シートを用いた加飾方法の場合、昇華転写シートを予め加工成形しなければならないため、コストがかかるという問題がある。 As a method for decorating decorative surfaces such as FRP molded products such as bathtubs, counters, and aprons used in bathroom units, a method of hot press printing a preliminarily processed sublimation transfer sheet has been proposed (for example, Patent Document 1).
However, in the case of the decorating method using the sublimation transfer sheet, there is a problem that the sublimation transfer sheet has to be processed and molded in advance, which increases costs.

一方、曲面への絵柄の転写性に優れた水圧転写法（たとえば、特許文献２等参照）の場合、特許文献１にも開示されているように転写された絵柄の耐熱水性や定着性に問題がある。 On the other hand, in the case of a hydraulic transfer method (for example, see Patent Document 2) excellent in transferability of a pattern to a curved surface, there is a problem in the hot water resistance and fixability of the transferred pattern as disclosed in Patent Document 1 There is.

すなわち、水圧転写法の場合、転写インキによって印刷された転写紙の絵柄を成形品の加飾面に転写する前に成形品の加飾面に転写インキ定着層を形成し、この転写インキ定着層に絵柄を転写するようになっているのであるが、本発明の発明者らが得た知見によれば、転写インキ定着層を構成する転写インキ定着層形成用塗料の乾燥度が絵柄の耐熱水性や定着性に大きく影響する。
詳しく説明すると、転写インキ定着層は、転写インキ定着層形成用塗料を成形品の加飾面に塗布し加熱乾燥することによって得られるが、乾燥しすぎると、転写インキの定着性に不具合が発生し、柄の流れが発生したりする。また、乾燥が不十分であると、転写インキは定着するものの耐熱水性に不具合が生じる。しかも、乾燥条件の許容範囲が狭く、乾燥温度分布が異なると、部分的に定着性の悪い部分や耐熱水性に欠ける部分が生じやすい。特に、背面側の補強リブやフィン等が部分的に突出するような成形品の場合、転写インキ定着層形成用塗料を塗布後、熱風乾燥炉中に成形品を入れて転写インキ定着層形成用塗料を乾燥させようとすると、補強リブと補強リブあるいはフィンで囲まれた部分に熱風滞留が発生し、成形品表面側の温度分布がばらつきやすくより乾燥むらが生じやすくなる。 That is, in the case of the hydraulic transfer method, the transfer ink fixing layer is formed on the decorative surface of the molded product before the transfer paper image printed with the transfer ink is transferred to the decorative surface of the molded product. According to the knowledge obtained by the inventors of the present invention, the dryness of the transfer ink fixing layer forming paint constituting the transfer ink fixing layer is determined by the heat resistance of the pattern. And fixability greatly.
Explaining in detail, the transfer ink fixing layer is obtained by applying the transfer ink fixing layer forming paint to the decorative surface of the molded product and drying it by heating. However, a pattern flow may occur. Further, if the drying is insufficient, the transfer ink is fixed, but there is a problem in hot water resistance. In addition, if the allowable range of the drying conditions is narrow and the drying temperature distribution is different, a part having poor fixability or a part lacking hot water resistance tends to occur. In particular, in the case of molded products in which the reinforcing ribs and fins on the back side partially protrude, after applying the transfer ink fixing layer forming paint, the molded product is placed in a hot air drying oven to form the transfer ink fixing layer. When the paint is to be dried, hot air stays in the portions surrounded by the reinforcing ribs and the reinforcing ribs or fins, and the temperature distribution on the surface side of the molded product tends to vary, resulting in uneven drying.

特開２０００−１０９６号公報JP 2000-1096 A 特開２００３−２５１９９９号公報JP 2003-251999 A

本発明は、上記事情に鑑みて、水圧転写法を用いて成形品の加飾面にムラなく耐熱温水性および定着性に優れた絵柄を転写できる成形品の加飾方法及びこの加飾方法に用いる成形品用治具を提供することを目的としている。 In view of the above circumstances, the present invention provides a decorative method for a molded product and a method for decorating the molded product that can transfer a pattern having excellent heat and water resistance and fixing properties to the decorative surface of the molded product using the hydraulic transfer method. It aims at providing the jig for molded articles to be used .

上記目的を達成するために、本発明にかかる成形品用治具は、加飾面の背面に複数のリブを有する成形品の加飾面に、転写インキ定着層形成用塗料を塗布し、転写インキ定着層用塗料を加熱乾燥する際に前記加飾面の背面に沿わせて使用する成形品用治具であって、
治具本体の、前記成形品の複数のリブに囲まれた部分に沿う位置にアルミニウム製の伝熱材が埋設されていることを特徴としている。 In order to achieve the above-mentioned object, the molded product jig according to the present invention applies a transfer ink fixing layer forming coating to the decorative surface of a molded product having a plurality of ribs on the back of the decorative surface, and transfers the molded product. A jig for a molded product to be used along the back of the decorative surface when the ink fixing layer coating is heated and dried,
An aluminum heat transfer material is embedded at a position along a portion of the jig body surrounded by a plurality of ribs of the molded product.

一方、本発明にかかる成形品の加飾方法は、上記本発明の成形品用治具を、加飾面の背面に複数のリブを有する成形品の背面に添設させた状態で、前記成形品の加飾面に転写インキ定着層用塗料を塗布し、前記転写インキ定着層形成用塗料を加熱乾燥して転写インキ定着層を形成する工程と、
前記成形品と成形品用治具とを取り外す工程と、
転写シートを水に浮かべ該転写シートの転写インキに活性剤を噴霧して転写インキを溶解させる工程と、
前記成形品の該加飾面を溶解状態の転写シートに押し当てて印刷図柄を前記転写インキ定着層に転写する工程と、
を有することを特徴としている。 On the other hand, in the method for decorating a molded product according to the present invention, the molded product jig of the present invention is attached to the back of the molded product having a plurality of ribs on the back of the decorative surface. Applying a transfer ink fixing layer coating to the decorative surface of the product, and heating and drying the transfer ink fixing layer forming coating to form a transfer ink fixing layer;
Removing the molded product and the molded product jig;
Floating the transfer sheet in water and spraying the activator on the transfer ink of the transfer sheet to dissolve the transfer ink;
A step of pressing the decorative surface of the molded product against a transfer sheet in a dissolved state to transfer a printed design to the transfer ink fixing layer;
It is characterized by having.

また、本発明の加飾方法は、特に限定されないが、たとえば、浴室ユニットの浴槽、エプロン、カウンター等のように熱水に曝される成形品に好適に用いられる。また、成形品の材質は、特に限定されないが、たとえば、繊維強化プラスチック（ＦＲＰ）が挙げられる。
本発明において、転写シートとは、水溶性あるいは水膨潤性のベースフィルムの上に転写インキによって印刷絵柄が印刷されているものを言い、ベースフィルムの材質としては、特に限定されないが、ポリビニルアルコール（ポバール）を主成分とし、これにポリアクリル酸アミドや他の水溶性高分子、デンプン、ゼラチン、にかわ等を必要に応じて混合した公知のものが好適に使用される。 Moreover, the decorating method of this invention is although it does not specifically limit, For example, it uses suitably for the molded article exposed to hot water like the bathtub of a bathroom unit, an apron, a counter etc., for example. The material of the molded product is not particularly limited, and examples thereof include fiber reinforced plastic (FRP).
In the present invention, the transfer sheet refers to a printed picture printed with a transfer ink on a water-soluble or water-swellable base film. The material of the base film is not particularly limited, but polyvinyl alcohol ( Poval) is used as a main component, and a known product obtained by mixing polyacrylamide, other water-soluble polymer, starch, gelatin, glue or the like as necessary is preferably used.

本発明にかかる成形品の加飾方法は、加飾面全体の温度を略均一な温度に制御しながら転写インキ定着層形成用塗料を加熱乾燥するようにしたので、加飾面全体で略均一に転写インキ定着層形成用塗料が乾燥される。したがって、得られる転写インキ定着層は加飾面全体でむら無く所定の乾燥度となり、しっかりと転写インキを水圧転写することができ、結果として耐熱水性、耐久性に優れた加飾を成形品の加飾面に形成することができる。 Decorating method of a molded article according to the present invention, since the transfer ink fixing layer forming coating material while controlling the temperature of the entire decorative surfaces substantially uniform temperature so as to dry pressurized heat substantially throughout the decorative surface The coating material for forming the transfer ink fixing layer is uniformly dried. Therefore, the transfer ink fixing layer obtained has a predetermined dryness evenly on the entire decorative surface, and the transfer ink can be firmly hydraulically transferred, resulting in a decoration with excellent hot water resistance and durability. It can be formed on the decorative surface.

以下に、本発明を、その実施の形態をあらわす図面を参照しつつ詳しく説明する。
図１〜図３は、本発明にかかる成形品の加飾方法の第１の実施の形態をあらわしている。 Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
1 to 3 show a first embodiment of a method for decorating a molded product according to the present invention.

この加飾方法は、図１に示すような加飾面１１の背面にリブ１２が設けられた成形品１に加飾を施すようになっていて、図２（ａ）に示すように、まず、成形品１の背面形状にほぼ沿う形状のハンドレイアップ法等で形成されたＦＲＰ製の治具本体２１と、治具本体２１の成形品１のリブ１２とリブ１２とによって囲まれた部分に沿う位置に埋設されたアルミニウム製の伝熱材２２とから構成されている成形品用治具２を形成しておく。
そして、図１に示すＦＲＰ製の成形品１を成形し、溶剤を用いて成形品１に残る離型剤を脱脂除去し、たとえば、エポキシ系プライマー塗料を成形品１の加飾面１１に塗布したのち、加熱乾燥炉（図示せず）中に成形品１を入れて焼き付け乾燥してプライマー塗料層（図示せず）を加飾面１１に形成する。 In this decoration method, decoration is applied to the molded product 1 in which the rib 12 is provided on the back surface of the decoration surface 11 as shown in FIG. 1, and as shown in FIG. A portion surrounded by the FRP jig body 21 formed by a hand lay-up method or the like having a shape substantially conforming to the back surface shape of the molded article 1, and the rib 12 and the rib 12 of the molded article 1 of the jig body 21. The jig 2 for molded products comprised of the heat transfer material 22 made of aluminum embedded at a position along the line is formed.
Then, the FRP molded product 1 shown in FIG. 1 is molded, and the release agent remaining in the molded product 1 is degreased and removed using a solvent. For example, an epoxy primer coating is applied to the decorative surface 11 of the molded product 1. After that, the molded product 1 is placed in a heating and drying furnace (not shown) and baked and dried to form a primer coating layer (not shown) on the decorative surface 11.

つぎに、図２（ｂ）に示すように、成形品用治具２を成形品１の背面に添設させた状態で、たとえば、転写インキ定着層形成用塗料をプライマー塗料層の表面に塗布したのち、成形品用治具２を成形品１の背面に添設させた状態で成形品１を加熱乾燥炉に入れて加熱乾燥させて転写インキ定着層を形成する。
その後、図３（ａ）に示すように、ポリビニルアルコールを主成分とするベースフィルムに印刷図柄が印刷された転写シート３を水の上に浮かべ、ベースフィルムを構成するポリビニルアルコールを水４に溶解させるとともに、転写シート３の転写インキに活性剤（たとえば、シンナー等の有機溶剤）を噴霧して転写インキを溶解させたのち、図３（ｂ）に示すように、温度均一化治具２を取り外した状態で転写インキ定着層が形成された成形品１ａをその加飾面１１側を溶解状態の転写シート３１に押し当てて水中に沈め、水圧によって転写シート３１の印刷図柄を転写インキ定着層に転写する。 Next, as shown in FIG. 2 (b), in a state where the molded article jig 2 is additionally provided on the rear surface of the molded article 1, for example, a transfer ink fixing layer forming coating on the surface of the primer coating layer coating After that, with the molded product jig 2 attached to the back of the molded product 1, the molded product 1 is placed in a heating and drying furnace and dried by heating to form a transfer ink fixing layer.
Thereafter, as shown in FIG. 3 (a), the transfer sheet 3 on which a printed pattern is printed on a base film mainly composed of polyvinyl alcohol is floated on water, and the polyvinyl alcohol constituting the base film is dissolved in water 4. In addition, after spraying an activator (for example, an organic solvent such as thinner) on the transfer ink of the transfer sheet 3 to dissolve the transfer ink, as shown in FIG. The molded product 1a on which the transfer ink fixing layer is formed in a detached state is pressed against the transfer sheet 31 in the dissolved state on the decorative surface 11 side and submerged in water, and the print pattern of the transfer sheet 31 is transferred to the transfer ink fixing layer by water pressure. Transcript to.

つぎに、成形品１を引き上げて転写後に残るベースフィルム成分の残渣を温水で洗い流したのち、表面の水滴を拭取り、乾燥炉内に入れ塗膜に吸収された水分を乾燥除去する。
そして、必要に応じて転写インキ層の上に、たとえば、アクリルウレタン系のトップコート塗料を塗布したのち、トップコート塗料を焼付け乾燥する。 Next, the molded product 1 is pulled up and the residue of the base film component remaining after the transfer is washed away with warm water. Then, water droplets on the surface are wiped off and placed in a drying furnace to dry and remove moisture absorbed in the coating film.
Then, if necessary, for example, an acrylic urethane topcoat paint is applied on the transfer ink layer, and then the topcoat paint is baked and dried.

この加飾方法は、以上のように、成形品用治具２を成形品１に添接させた状態で加飾面に塗装された転写インキ定着層用塗料を加熱乾燥するようにしたので、リブ１２とリブ１２との間部分で、熱風滞留によって加熱が悪くても、成形品用治具２に埋め込まれた伝熱材２２によって加熱炉からの熱が他の部分より効率よく伝わり、結果として、加飾面側では全面にわたってほぼ均一な条件で転写インキ定着層用塗料が乾燥される。
したがって、得られる転写インキ定着層は加飾面全体でむら無く所定の乾燥度となり、しっかりと転写シート３の転写インキを転写インキ定着層に水圧転写することができ、結果として耐熱水性、耐久性に優れた加飾を成形品の加飾面に形成することができる。 The decorating method, as described above. Thus heating and drying the transfer ink fixing layer coating material which is coated on the decorative surface while being spliced moldings jig 2 in the molded article 1, Even if the heating between the rib 12 and the rib 12 is poor due to hot air retention, heat from the heating furnace is transmitted more efficiently than the other parts by the heat transfer material 22 embedded in the jig 2 for the molded product , and as a result As described above, the coating material for the transfer ink fixing layer is dried on the decorative surface side under substantially uniform conditions over the entire surface.
Therefore, the obtained transfer ink fixing layer has a predetermined dryness evenly on the entire decorative surface, and the transfer ink of the transfer sheet 3 can be firmly hydraulically transferred to the transfer ink fixing layer, resulting in hot water resistance and durability. Can be formed on the decorative surface of the molded product.

しかも、プライマー塗料、トップコート塗料および転写インキ定着層形成用塗料の加熱乾燥温度（焼き付け乾燥温度）が異なっても、温度均一化治具２を成形品１に添設させることによって、昇温時間を制御し、プライマー塗料、トップコート塗料および転写インキ定着層形成用塗料を同一設備条件で乾燥させるこができる。また、成形品のサイズが異なる場合であっても、温度均一化治具２を変更するだけで、同一の乾燥炉を用いて乾燥させることができる。
したがって、乾燥炉等の設備コストを低減できるとともに、生産性もよくなる。 Moreover, even if the heat drying temperature (baking drying temperature) of the primer paint, the top coat paint, and the transfer ink fixing layer forming paint is different, the temperature raising time can be increased by attaching the temperature equalizing jig 2 to the molded product 1. Thus, the primer paint, the top coat paint, and the transfer ink fixing layer forming paint can be dried under the same equipment conditions. Moreover, even when the sizes of the molded products are different, they can be dried using the same drying furnace only by changing the temperature equalizing jig 2.
Therefore, equipment costs such as a drying furnace can be reduced, and productivity is improved.

本発明にかかる成形品の加飾方法は、上記の実施の形態に限定されない。たとえば、成形品の加飾面には、必要に応じてゲルコート層を設けるようにしても構わない。 The decoration method of the molded product concerning this invention is not limited to said embodiment. For example, the decorative surface of the formed molded article, may be provided gelcoat layer if necessary.

本発明にかかる成形品の加飾方法によって加飾される成形品の１例をあらわす断面図である。It is sectional drawing showing one example of the molded product decorated by the decoration method of the molded product concerning this invention. 図１の成形品を加飾する本発明にかかる成形品の加飾方法の第１の実施の形態を工程順に説明する図であって、同図（ａ）はその温度均一化治具装着前の状態をあらわす断面図、同図（ｂ）はその温度均一化治具装着後の状態をあらわす断面図である。It is a figure explaining 1st Embodiment of the decoration method of the molded product concerning this invention which decorates the molded product of FIG. 1 in order of a process, The figure (a) is the temperature equalization jig | tool before mounting | wearing FIG. 4B is a cross-sectional view showing the state after the temperature equalizing jig is mounted. 図１の成形品を加飾する本発明にかかる成形品の加飾方法の第１の実施の形態を工程順に説明する図であって、同図（ａ）は転写シートを水に浮かべた状態をあらわす断面図、同図（ｂ）は成形品に水圧転写する状態をあらわす断面図である。It is a figure explaining 1st Embodiment of the decoration method of the molded product concerning this invention which decorates the molded product of FIG. 1 in order of a process, The figure (a) is the state which floated the transfer sheet in water FIG. 4B is a cross-sectional view showing a state of hydraulic transfer to a molded product.

符号の説明Explanation of symbols

１，５成形品
２成形品用治具
３転写シート
４水
１１加飾面
１２リブ
２１治具本体
２２伝熱材 1, 5 Molded product 2 Molded product jig 3 Transfer sheet 4 Water 11 Decorative surface 12 Rib 21 Jig body 22 Heat transfer material

Claims

加飾面の背面に複数のリブを有する成形品の加飾面に、転写インキ定着層形成用塗料を塗布し、転写インキ定着層用塗料を加熱乾燥する際に前記加飾面の背面に沿わせて使用する成形品用治具であって、
治具本体の、前記成形品の複数のリブに囲まれた部分に沿う位置にアルミニウム製の伝熱材が埋設されていることを特徴とする成形品用治具。 A coating for forming a transfer ink fixing layer is applied to the decorative surface of a molded product having a plurality of ribs on the back of the decorative surface, and the coating for the transfer ink fixing layer is heated and dried along the back of the decorative surface. A jig for a molded product to be used,
A jig for a molded product, wherein a heat transfer material made of aluminum is embedded at a position along a portion of the jig body surrounded by a plurality of ribs of the molded product .

治具本体が、繊維強化プラスチック製である請求項１に記載の成形品用治具。 The jig for molded articles according to claim 1, wherein the jig body is made of fiber reinforced plastic .

請求項１または請求項２に記載の成形品用治具を、加飾面の背面に複数のリブを有する成形品の背面に添設させた状態で、前記成形品の加飾面に転写インキ定着層用塗料を塗布し、前記転写インキ定着層形成用塗料を加熱乾燥して転写インキ定着層を形成する工程と、The transfer ink is applied to the decorative surface of the molded product, with the molded product jig according to claim 1 or 2 attached to the back surface of the molded product having a plurality of ribs on the back surface of the decorative surface. Applying a coating material for a fixing layer, and heating and drying the coating material for forming a transfer ink fixing layer to form a transfer ink fixing layer;
前記成形品と成形品用治具とを取り外す工程と、Removing the molded product and the molded product jig;
転写シートを水に浮かべ該転写シートの転写インキに活性剤を噴霧して転写インキを溶解させる工程と、Floating the transfer sheet on water and spraying an activator on the transfer ink of the transfer sheet to dissolve the transfer ink;
前記成形品の該加飾面を溶解状態の転写シートに押し当てて印刷図柄を前記転写インキ定着層に転写する工程と、A step of pressing the decorative surface of the molded product against a transfer sheet in a dissolved state to transfer a printed design to the transfer ink fixing layer;
を有することを特徴とする成形品の加飾方法。A method for decorating a molded product, comprising: