JP4065981B2

JP4065981B2 - Painted resin imitation tree and method of painting resin imitation tree

Info

Publication number: JP4065981B2
Application number: JP32384497A
Authority: JP
Inventors: 秀樹石田; 裕司粕谷
Original assignee: Origin Electric Co Ltd; Toyo Tire and Rubber Co Ltd
Current assignee: Origin Electric Co Ltd; Toyo Tire Corp
Priority date: 1997-11-10
Filing date: 1997-11-10
Publication date: 2008-03-26
Anticipated expiration: 2017-11-10
Also published as: JPH11140206A

Description

【０００１】
【発明の属する技術分野】
本発明は、ポリエチレンやポリプロピレンのようなオレフィン系樹脂成形品、特に、再生ポリエチレンと反応硬化済のガラス繊維強化プラスチック成形品を粉砕して得たフロック状ガラス繊維強化プラスチックの混合物をモールド中で加熱加圧して表面に樹皮状の形状を設けた混成体になる柱状の成形品の表面に、後加工で色彩塗装を施してなる塗装を施した樹脂製擬木及び樹脂製擬木の塗装方法に関するものである。
【０００２】
【従来の技術】
ポリエチレンのようなオレフィン系樹脂は、極性がないために、このような成形品に塗装を施しても耐久性がなく、塗膜は短期間で剥離してしまい、耐久性のある塗装を施すことは困難であった。そのため、このようなオレフィン系樹脂を原料とする成形品に色彩を備えさせるために、予め顔料を添加した原料により色を備えた製品を得ていた。
【０００３】
【発明が解決しようとする課題】
しかしながら、予め顔料を添加した原料で得た製品は、成形品を形成する原料自体の色であるから、塗装が剥げるといった現象はないにしても、このような着色原料を用いた成形品には単一の色しか出せないので、製品は単色のものに限られ、一個の成形品に多数の色彩模様をもたせることはできなかった。
【０００４】
また、種々の色彩の製品を得るためには、種々の顔料を添加した原料を作らなければならないが、この場合でも、製品自体は単色のものであり、所詮は一個ごとに色違いの単色の製品として提供されるに過ぎず、しかも、このような着色原料は、一般には、量産施設で生産されるもので、種々の色違いの原料を製造するのは非効率的な作業を要するし、コスト高となるのが免れなかった。
【０００５】
本発明は上記の課題に鑑みてなされたものであって、その目的とするところは、ポリエチレンやポリプロピレンのようなオレフィン系樹脂成形品、特に、再生ポリエチレンと反応硬化済のガラス繊維強化プラスチック成形品を粉砕して得たフロック状ガラス繊維強化プラスチックの混合物をモールド中で加熱加圧して表面に樹皮状の形状を設けた混成体になる柱状の成形品の表面に、後加工により耐久性に富む塗装を施すことを可能とし、更に、一個の製品に多数の色で塗装することにより色彩模様を備えさせた色彩を施した樹脂製擬木及び樹脂製擬木の塗装方法を提供することにある。
【０００６】
上記目的を達成するために、本発明に係る塗装を施した樹脂製擬木は、再生ポリエチレンと反応硬化済のガラス繊維強化プラスチック成形品を粉砕して得たフロック状ガラス繊維強化プラスチックの混合物をモールド中で加熱加圧して表面に樹皮状の形状を設けた混成体になる柱状の成形品を形成し、前記混成体になる成形品の表面に、無水マレイン酸変成ポリオレフィンを主成分とする溶質の１０重量部を炭化水素８６．０重量部、エチレン４．０重量部に溶解したプライマー層成形剤を塗布し、このプライマー層の表面に二液性アクリル系樹脂塗料を塗布してなる。
また、樹脂製擬木の塗装方法は、再生ポリエチレンと反応硬化済のガラス繊維強化プラスチック成形品を粉砕して得たフロック状ガラス繊維強化プラスチックの混合物をモールド中で加熱加圧して表面に樹皮状の形状を設けた混成体になる柱状の成形品を形成し、前記混成体になる成形品の表面に、無水マレイン酸変成ポリオレフィンを主成分とする溶質の１０重量部を炭化水素８６．０重量部、エチレン４．０重量部に溶解したプライマー層成形剤を塗布して５分間自然放置してプライマー層を形成し、このプライマー層の表面に二液性アクリル系樹脂塗料を塗布した後、７０℃の温度雰囲気中で３０分間加熱して乾燥してなる。
【０００７】
また、本発明は、前記プライマ−層の表面に、多数の異なる色のアクリル系樹脂塗料を塗布することにより、成形品の表面に色模様を現出させてなる。
【０００８】
【発明の実施の形態】
本発明は、新生又は再生のオレフィン系樹脂の成形品の表面に、無水マレイン酸変性ポリオレフィンを主成分とする溶質を溶剤に溶解させた溶液型プライマ−形成剤を塗布してプライマ−層を形成させ、前記プライマ−層の表面に所望する顔料を含むアクリル系樹脂塗料を塗布して色彩のある塗膜を形成させてなる。
【０００９】
また、本発明は、前記プライマ−層の表面に、多数の異なる色のアクリル系樹脂塗料を塗布することにより、成形品の表面に色模様を現出させてなる。
【００１０】
本発明は、ポリエチレンやポリプロピレンのような極性のないオレフィン系樹脂の成形品の表面に、アクリル系樹脂を塗布するにあたり、無水マレイン酸変性ポリオレフィンを主成分とする溶質を多成分系溶媒に溶解した溶剤型プライマ−層形成剤を用いるので、無水マレイン酸変性ポリオレフィンは、成形品の主材であるオレフィン系樹脂と、最表層を形成するアクリル系樹脂塗料との両者が相容して、溶剤が揮散後には一体となるので、オレフィン系樹脂成形品にアクリル系樹脂塗料の強靭な塗膜が得られる。
【００１１】
図１は本発明により色彩を施した車止めを一部断面で示す正面図で、車止め１は再生ポリエチレンから、表面が滑らかな柱状の成形品として形成され、該車止め１の表面に無水マレイン酸変性ポリオレフィンを主成分とする溶質を溶剤に溶解させた溶液型プライマ−形成剤を塗布してプライマ−層を形成させ、前記プライマ−層の表面に、車止め１の本体部分を例えば青色系のアクリル系樹脂塗料を塗布して青色の塗装部１ａを施し、車止め１の上部部分には例えば赤色のアクリル系樹脂塗料で２本の線模様に塗布した赤色の塗装部１ｂを施して、車止め１の本体を青色系の色彩を施すと共に、上部部分に赤色の２本の線状の色彩を施して形成されている。そして、この車止め１は地中２に埋め込み設置された基礎３に差し込んで起立設置される。
【００１２】
図２は本発明により色彩を施した柵を一部断面で示す正面図で、柵１１は再生ポリエチレンをモ−ルド中で加熱加圧して表面に凹凸のある樹皮状の成形品として支柱１２及び横木１３を形成する。これらの支柱１２及び横木１３のそれぞれの表面に無水マレイン酸変性ポリオレフィンを主成分とする溶質を溶剤に溶解させた溶液型プライマ−形成剤を塗布してプライマ−層を形成させ、これらの支柱１２及び横木１３に塗布した前記プライマ−層の表面に、例えば樹木の色に相応しい茶色系のアクリル系樹脂塗料を塗布して擬木に相応しい色彩を施して形成される。そして、複数の支柱１２の間に横木１３を接続し、前記複数の支柱１２を、地中２に埋め込み設置された基礎３に差し込んで起立設置することにより擬木による柵１１が構築される。
【００１３】
【実施例１】
この実施例１において、再生ポリエチレンをモ−ルド中で加熱加圧表面に樹皮状の形状を設けた単成体になる柱状の成形品を成形した。
次いで、前記単成体になる成形品の表面を溶剤を用いて洗浄した後、無水マレイン酸変性ポリオレフィンを主成分とする溶質の１０重量部を炭化水素８６．０重量部、エチレン４．０重量部に溶解したプライマ−層形成剤を塗布して約５分間自然放置してプライマ−層を形成させた。
次いで前記プライマ−層の表面に、二液性アクリル系樹脂塗料を塗布して約５分間自然放置した後、約７０℃の温度雰囲気中で約３０分間加熱して乾燥させて再生ポリエチレン単成体の表面塗装をした柱体を得た。
【００１４】
【実施例２】
この実施例２において、再生ポリエチレンと反応硬化済の所謂ガラス繊維強化プラスチック成形品を粉砕して得たフロック状ガラス繊維強化プラスチックの混合物をそれぞれモ−ルド中で加熱加圧表面に樹皮状の形状を設けた混成体になる柱状の成形品を成形した。
次いで、前記実施例１と同様に、前記混成体になる成形品の表面を溶剤を用いて洗浄した後、無水マレイン酸変性ポリオレフィンを主成分とする溶質の１０重量部を炭化水素８６．０重量部、エチレン４．０重量部に溶解したプライマ−層形成剤を塗布して約５分間自然放置してプライマ−層を形成させた。
次いで前記プライマ−層の表面に、二液性アクリル系樹脂塗料を塗布して約５分間自然放置した後、約７０℃の温度雰囲気中で約３０分間加熱して乾燥させて再生ポリエチレンとガラス繊維強化プラスチックの混成体の表面塗装をした柱体を得た。
上記の実施例１と実施例２との２種の表面塗装をした柱体のそれぞれについて、物性を試験したところ表１に示す結果を得た。
【００１５】
【表１】

【００１６】
表１において、実施例１の再生ポリエチレンになる単成体の成形品に対する塗装は全ての試験項目について全く異状がなく塗膜の物性は優れていることが理解できる。また、実施例２の再生ポリエチレンとガラス繊維強化プラスチックの混成体の成形品に対する塗装は、耐候性試験では微小な塗膜剥離が見られる程度のものであった。
【００１７】
なお、比較試験のため、実施例１の再生ポリエチレンを再生プロピレンに替えて作成した単成体と、実施例２の再生ポリエチレンとガラス繊維強化プラスチックを新生ポリエチレン及び新生プロピレンに替えて作成した混成体との表面塗装をした柱体とについて、前記と同じ試験をしたところ、再生ポリエチレンである場合が、物性が最も優れていることが判明した。しかし、新生ポリエチレン、新生プロピレンでも塗膜の物性は、再生ポリエチレンに比較したが、僅かに劣る程度のものであった。
【００１８】
【発明の効果】
本発明は上記のような構成であるから次のような効果を奏する。
溶剤型プライマ−層成形剤の主成分である無水マレイン酸変性ポリオレフィンは、成形品の主材であるオレフィン系樹脂と、最表層を形成するアクリル系樹脂塗料との両者が相容して、溶剤が揮散後には一体となり、オレフィン系樹脂成形品にアクリル系樹脂塗料の強靭な塗膜が得られ、それ故に、オレフィン系樹脂成形品の表面に耐久性に富んだ塗装を施すことができる。
【００１９】
また、本発明によれば、オレフィン系樹脂の成形品の表面に、後加工で着色塗膜を形成させることができるので、成形品を構成する材料には、予め顔料を添加する必要はないし、また、顔料が既に添加されているオレフィン系樹脂の再生品であっても、再生材料が、予めもっている色とは異なった色を表現できるし、前記実施の形態で示した柱体を、仮に、車止めとして、または道路や公園に擬木の柵として構築した場合、表１のデ−タから、自然環境下にあって、２０年以上は塗装に損傷が生じたり、褪色することがないことが推定できる。
【００２０】
また、本発明は、再生ポリエチレンの塗装した効果が著しく、種々のポリエチレンの廃棄物を再生利用製造した製品の塗装に応用して多大の効果がある。更には、本発明によれば、原料を着色するのではなく、成形品の表面を塗膜で着色するので、異なる色の塗料を組み合わせて用いることにより、成形品に、多数の色での色彩模様を施すことができ、例えば、樹皮のような色模様を現出させるのに好適であり、樹皮のような表面に凹凸を有する成形品に対しても容易に塗装を施すことができる等の効果を奏する。
【図面の簡単な説明】
【図１】本発明の車止めを一部断面で示す正面図である。
【図２】本発明の柵を一部断面で示す正面図
【符号の説明】
１車止め
１ａ青色の塗装部
１ｂ赤色の塗装部
１１柵
１２支柱
１３横木[0001]
BACKGROUND OF THE INVENTION
The present invention is an olefin-based resin molded article, such as polyethylene or polypropylene, in particular, heating the mixture of obtained by pulverizing a glass fiber reinforced plastic article already reaction curing with recycled polyethylene flock-like, fiber-reinforced plastic in the mold It is related to the resin pseudo-tree and the method of painting the resin pseudo-tree, where the surface of the pillar-shaped molded product that becomes a composite with a bark-like shape on the surface is applied by applying color coating in post-processing. is there.
[0002]
[Prior art]
Olefin-based resins such as polyethylene are not polar, so they are not durable even when applied to such molded products, and the coating will peel off in a short period of time, giving a durable coating. Was difficult. For this reason, in order to provide a molded product using such an olefin resin as a raw material, a product having a color has been obtained by using a raw material to which a pigment has been added in advance.
[0003]
[Problems to be solved by the invention]
However, since the product obtained with the raw material to which the pigment has been added in advance is the color of the raw material itself that forms the molded product, there is no such phenomenon that the paint is peeled off, Since only a single color can be produced, the product is limited to a single color, and a single molded product cannot have many color patterns.
[0004]
Moreover, in order to obtain products of various colors, it is necessary to make raw materials to which various pigments are added, but even in this case, the product itself is of a single color, and as a matter of fact, each product has a single color of a different color. In addition, these colored raw materials are generally produced in mass production facilities, and it is inefficient to produce raw materials of various colors. The cost was unavoidable.
[0005]
The present invention has been made in view of the above-mentioned problems, and its object is to form an olefin-based resin molded product such as polyethylene or polypropylene, particularly a glass fiber reinforced plastic molded product that has been reacted and cured with recycled polyethylene. A mixture of floc-like glass fiber reinforced plastics obtained by crushing is heated and pressed in a mold, and the surface of a columnar molded product that becomes a composite with a bark-like shape on the surface is rich in durability by post-processing. It is another object of the present invention to provide a resin pseudo-tree and a method for coating the resin pseudo-tree, which can be applied with a color, and are provided with a color pattern by coating a single product with a large number of colors.
[0006]
In order to achieve the above-mentioned object, the resin artificial wood subjected to coating according to the present invention is molded from a mixture of recycled polyethylene and a glass fiber reinforced plastic obtained by pulverizing a reaction-cured glass fiber reinforced plastic molded product. by heating and pressing to form a columnar molded article comprising a hybrid having a bark-like shape on the surface in the middle, the molded article surface to become the hybrid, composed mainly of maleic acid-modified poly olefin anhydride A primer layer forming agent in which 10 parts by weight of a solute is dissolved in 86.0 parts by weight of hydrocarbon and 4.0 parts by weight of ethylene is applied, and a two-part acrylic resin coating is applied to the surface of the primer layer.
Further, the method of coating the resin擬木the surface bark-like pressurized heating a mixture of obtained by pulverizing a glass fiber reinforced plastic article already reaction curing with recycled polyethylene flock-like, fiber-reinforced plastic in the mold A columnar molded product that is a composite having a shape is formed, and 10 parts by weight of a solute mainly composed of maleic anhydride-modified polyolefin is formed on the surface of the molded product that is a composite. ethylene 4.0 parts by weight dissolved primer layer forming agent is applied for 5 minutes allowed to stand to form a primer layer, after applying the two-component acrylic resin paint on the surface of the primer layer, 70 ℃ formed by drying by heating for 30 minutes in a temperature atmosphere.
[0007]
In the present invention, a color pattern appears on the surface of the molded article by applying a large number of different colors of acrylic resin paints on the surface of the primer layer.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention forms a primer layer by applying a solution type primer forming agent in which a solute mainly composed of maleic anhydride-modified polyolefin is dissolved in a solvent on the surface of a molded product of a new or regenerated olefin resin. Then, an acrylic resin paint containing a desired pigment is applied to the surface of the primer layer to form a colored coating film.
[0009]
In the present invention, a color pattern appears on the surface of the molded article by applying a large number of different colors of acrylic resin paints on the surface of the primer layer.
[0010]
In the present invention, a solute mainly composed of maleic anhydride-modified polyolefin is dissolved in a multi-component solvent when an acrylic resin is applied to the surface of a molded product of non-polar olefin resin such as polyethylene or polypropylene. Since the solvent type primer layer forming agent is used, the maleic anhydride-modified polyolefin is compatible with both the olefin resin, which is the main material of the molded article, and the acrylic resin paint that forms the outermost layer. Since it is integrated after volatilization, a tough coating film of acrylic resin paint is obtained on the olefin resin molded product.
[0011]
FIG. 1 is a front view showing, in partial cross section, a car stop colored according to the present invention. The car stop 1 is formed from a recycled polyethylene as a columnar molded product having a smooth surface, and the surface of the car stop 1 is modified with maleic anhydride. A primer layer is formed by applying a solution-type primer forming agent in which a solute mainly composed of polyolefin is dissolved in a solvent, and a main body portion of the car stopper 1 is formed on the surface of the primer layer, for example, a blue acrylic type Resin paint is applied to give a blue paint part 1a, and the upper part of the car stopper 1 is given, for example, a red paint part 1b applied in two line patterns with a red acrylic resin paint. Is formed by applying a blue-based color and two red linear colors on the upper portion. The vehicle stop 1 is installed upright by being inserted into a foundation 3 embedded in the underground 2.
[0012]
FIG. 2 is a front view showing a cross-section of a colored fence according to the present invention. The fence 11 is made of heat-pressed recycled polyethylene in a mold to form a support 12 and a bark-shaped molded article having an uneven surface. A rung 13 is formed. A solution type primer forming agent in which a solute mainly composed of maleic anhydride-modified polyolefin is dissolved in a solvent is applied to the surface of each of the columns 12 and the crossbars 13 to form a primer layer. Further, for example, a brown acrylic resin paint suitable for the color of the tree is applied to the surface of the primer layer applied to the cross 13 to give a color suitable for the pseudo tree. Then, by connecting the cross 13 between the plurality of support columns 12 and inserting the plurality of support columns 12 into the foundation 3 embedded and installed in the ground 2, the fence 11 made of a pseudo tree is constructed.
[0013]
[Example 1]
In Example 1, a pillar-shaped molded article that was a single component having a bark-like shape provided on a heated and pressurized surface in a molded form of recycled polyethylene was molded.
Next, the surface of the molded article that becomes a monocomponent is washed with a solvent, and then 10 parts by weight of a solute mainly composed of maleic anhydride-modified polyolefin is added to 86.0 parts by weight of hydrocarbon and 4.0 parts by weight of ethylene. The primer layer-forming agent dissolved in was applied and allowed to stand for about 5 minutes to form a primer layer.
Next, a two-component acrylic resin coating is applied to the surface of the primer layer and allowed to stand naturally for about 5 minutes, and then dried by heating for about 30 minutes in a temperature atmosphere of about 70 ° C. A surface-coated column was obtained.
[0014]
[Example 2]
In this Example 2, a mixture of floc-like glass fiber reinforced plastic obtained by pulverizing a so-called glass fiber reinforced plastic molded product that had been regenerated with polyethylene and a reaction-cured product was bark-shaped on the surface heated and pressed in a mold A columnar molded product that becomes a hybrid body provided with was molded.
Next, as in Example 1, the surface of the molded article to be a composite was washed with a solvent, and then 10 parts by weight of a solute mainly composed of maleic anhydride-modified polyolefin was added to 86.0% by weight of hydrocarbon. A primer layer forming agent dissolved in 4.0 parts by weight of ethylene was applied and allowed to stand for about 5 minutes to form a primer layer.
Next, a two-component acrylic resin coating is applied to the surface of the primer layer and left to stand for about 5 minutes, and then heated and dried in a temperature atmosphere of about 70 ° C. for about 30 minutes to regenerate polyethylene and glass fiber. A column with a surface coating of a composite of reinforced plastic was obtained.
When the physical properties of each of the two types of surface-coated pillars of Example 1 and Example 2 were tested, the results shown in Table 1 were obtained.
[0015]
[Table 1]

[0016]
In Table 1, it can be understood that the coating on the single-piece molded article that becomes the recycled polyethylene of Example 1 has no abnormality at all for the test items and the physical properties of the coating film are excellent. Moreover, the coating with respect to the molded article of the composite of the recycled polyethylene and the glass fiber reinforced plastic in Example 2 was such that minute coating film peeling was observed in the weather resistance test.
[0017]
In addition, for comparison test, a single composite produced by replacing the recycled polyethylene of Example 1 with recycled propylene, and a hybrid prepared by replacing the recycled polyethylene and glass fiber reinforced plastic of Example 2 with new polyethylene and new propylene, When the same test as described above was performed on the surface-coated columnar body, it was found that the physical properties were the best in the case of recycled polyethylene. However, even with new polyethylene and new propylene, the physical properties of the coating film were slightly inferior to those of recycled polyethylene.
[0018]
【The invention's effect】
Since this invention is the above structures, there exist the following effects.
The maleic anhydride-modified polyolefin, which is the main component of the solvent-type primer layer molding agent, is compatible with both the olefin resin, which is the main material of the molded article, and the acrylic resin paint that forms the outermost layer. After volatilization, the olefinic resin molded product is obtained as a tough coating film of acrylic resin paint, and therefore the surface of the olefinic resin molded product can be coated with high durability.
[0019]
Further, according to the present invention, since a colored coating film can be formed by post-processing on the surface of the molded product of the olefin resin, it is not necessary to add a pigment in advance to the material constituting the molded product, Further, even if the regenerated product of the olefin resin to which the pigment has already been added, the regenerated material can express a color different from the color that has been stored in advance. When constructed as a car stop or as a fake wooden fence on a road or park, the data in Table 1 indicates that the paint will not be damaged or faded for more than 20 years under natural conditions. Can be estimated.
[0020]
In addition, the present invention is remarkably effective when coated with recycled polyethylene, and has a great effect when applied to the coating of products made by recycling and manufacturing various types of polyethylene waste. Furthermore, according to the present invention, since the surface of the molded product is colored with a coating film instead of coloring the raw material, a combination of paints of different colors can be used to add a number of colors to the molded product. For example, it is suitable for making a color pattern such as bark appear, and can easily be applied to a molded product having irregularities on the surface such as bark. There is an effect.
[Brief description of the drawings]
FIG. 1 is a front view showing a partial cross section of a vehicle stopper according to the present invention.
FIG. 2 is a front view showing a part of the fence of the present invention in cross section.
1 Car Stop 1a Blue Painted Part 1b Red Painted Part 11 Fence 12 Prop 13 Yokogi

Claims

Columnar become hybrid having a bark-like shape the mixture by heating and pressing the surface in a mold obtained by pulverizing a glass fiber reinforced plastic article already reaction curing with recycled polyethylene flock-like, fiber-reinforced plastic the molded article is formed, the molded article surface comprising the hybrid hydrocarbon 86.0 parts by weight 10 parts by weight of the solute mainly composed of maleic acid-modified poly olefin anhydride, ethylene 4.0 parts by weight A resin-made artificial tree in which a melted primer layer forming agent is applied and a two-part acrylic resin paint is applied to the surface of the primer layer.

Columnar become hybrid having a bark-like shape the mixture by heating and pressing the surface in a mold obtained by pulverizing a glass fiber reinforced plastic article already reaction curing with recycled polyethylene flock-like, fiber-reinforced plastic the molded article is formed, the molded article surface comprising the hybrid hydrocarbon 86.0 parts by weight 10 parts by weight of the solute mainly composed of maleic acid-modified poly olefin anhydride, ethylene 4.0 parts by weight dissolved 5 minutes a primer layer forming agent is applied allowed to stand to form a primer layer, after applying the two-component acrylic resin paint on the surface of the primer layer, for 30 minutes in a temperature atmosphere of 70 ° C. A method of painting resin-made artificial wood that is heated and dried.