JP4329186B2 - Mirror finish fiber reinforced resin laminate and method for producing the same - Google Patents

Mirror finish fiber reinforced resin laminate and method for producing the same Download PDF

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Publication number
JP4329186B2
JP4329186B2 JP30508899A JP30508899A JP4329186B2 JP 4329186 B2 JP4329186 B2 JP 4329186B2 JP 30508899 A JP30508899 A JP 30508899A JP 30508899 A JP30508899 A JP 30508899A JP 4329186 B2 JP4329186 B2 JP 4329186B2
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Japan
Prior art keywords
resin
mirror
fiber
film
layer
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Expired - Fee Related
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JP30508899A
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Japanese (ja)
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JP2001121634A (en
Inventor
昭二 簗田
良典 渡辺
康雄 角井
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Nitto Boseki Co Ltd
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Nitto Boseki Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、浴室、洗面室、トイレ等の水周り部の壁面等に使用する鏡面仕上げ繊維強化樹脂積層板及びその製造方法に関する。
【0002】
【従来の技術】
従来、浴室の壁面等に使用する鏡面仕上げ繊維強化樹脂積層板は、予め成形された繊維強化樹脂板の表面を研磨して、平滑面を出し、その上に樹脂層を設ける、あるいは模様紙を被せその上に樹脂層を設けた後、フィルムを被せ硬化させて製造されている。しかしながら、このようにして製造される鏡面仕上げの繊維強化樹脂板には、研磨の手間及び研磨面との相性、なじみ、ひけの問題が伴い、また仕上がりの均一性や、内部の繊維層パターンが透けて見えること、さらには繊維強化樹脂板の上に被せる樹脂層の耐候性・耐久性等の改善が望まれていた。一方、特開平7−285207号公報には、基材上に熱硬化性樹脂含浸紙又は印刷紙を有し、更にその上に熱硬化性樹脂組成物体を載置して鏡面プレスを行った樹脂化粧板の製造方法が記載されている。この方法で作られた鏡面仕上げの樹脂化粧板は、表面研削等の手間がかからず比較的効率よく樹脂化粧板が得られるが、表面が不飽和ポリエステル系樹脂等の寒天状の熱硬化性樹脂組成物体がそのままで成型されているため、ある程度の鏡面状態は得られるものの、平滑性、光沢性がまだ充分とはいえず、表面強度、板の剛性と重量の面でも十分ではなかった。
【0003】
【発明が解決しようとする課題】
本発明は前記状況を鑑み、研磨の手間、相性、なじみ、ひけの問題、仕上がりの均一性、ガラスパターンの透け、樹脂層の耐候性・耐久性の改善を図ることを目的とし、特に上表面層に樹脂フィルムを設け、増粘した特殊熱硬化性タイプの樹脂を使用して鏡面プレスすることで仕上がりの均一性を向上させ、耐候性・耐久性のある鏡面仕上げの繊維強化樹脂積層板を提供することを課題とする。
【0004】
【課題を解決するための手段】
本発明は、これらの課題に対し、上表面層に樹脂フィルム、中間層に模様シート、下層に増粘剤配合の樹脂を含浸した無機質繊維層の構成で積層して、一体成型してなる三層構造の鏡面仕上げ繊維強化樹脂積層板を用いることを課題解決の手段とする。
【0005】
また前記下層の無機質繊維層が不飽和ポリエステル樹脂100重量部に対し、増粘剤としてメタクリル酸−メタクリル酸アルキル共重合物を5〜30重量部配合して樹脂含浸したガラス繊維強化樹脂層であることを手段とする。更にまた鏡面仕上がりが良好で加工しやすいことより、前記樹脂フィルムとして、アクリルフィルムを用いることが好ましい。
【0006】
前記鏡面仕上げ繊維強化樹脂積層板は、下部キャリアフィルム上に増粘した樹脂を供給し、該樹脂の上に無機質繊維を供給して樹脂含浸した後、その上に模様シートを供給し、該模様シート上に樹脂フィルムを供給し、更にその上に上部キャリアフィルムを供給してローラ加圧で一体に連続成形した後、鏡面プレスする製造方法を用いることを手段とする。
【0007】
前記無機質繊維は、コスト、強度、加工仕上り状態がよいことから、ガラス繊維が好ましく、チョップドストランド、不織布、織布、編布等のガラス繊維を用いることが好ましく、又これらの異形態のガラス繊維材料を組み合わせて用いることもできる。
【0008】
【発明の実施の形態】
以下、本発明の具体的な実施の形態を図により説明する。図1は本発明の鏡面仕上げ繊維強化樹脂積層板の一実施例を示す概略断面図である。図2は本発明の鏡面仕上げ繊維強化樹脂積層板の製造方法を示す工程例の概略説明図である。
【0009】
本発明の鏡面仕上げ繊維強化樹脂積層板1は、図1に示すとおりガラス繊維強化樹脂層2の上に模様シート3、樹脂フィルム4を積層させた構成からなる。ガラス繊維強化樹脂層2は、メタクリル酸−メタクリル酸アルキル共重合物を配合して増粘した不飽和ポリエステル樹脂をガラス繊維に含浸させて形成する。また、樹脂フィルム4は表面を鏡面板にて加熱及び鏡面プレスすることで鏡面仕上げとなる。
【0010】
ガラス繊維強化樹脂層2に用いられるガラス繊維については、チョップドストランド、不織布、織布、編布等を用いることができる。また該ガラス繊維に含浸させる樹脂は、不飽和ポリエステル樹脂が好ましく、不飽和ポリエステル樹脂のタイプとしてはオルソ系、イソ系の他、従来繊維強化樹脂板に使用されている樹脂はいずれも用いることができる。不飽和ポリエステル樹脂を増粘させるためには、メタクリル酸−メタクリル酸アルキル共重合物を配合することが好ましく、配合割合は、不飽和ポリエステル樹脂100重量部に対し、メタクリル酸−メタクリル酸アルキル共重合物を5重量部〜30重量部配合することが好ましい。5重量部以下では、プレス時にフローが良すぎて樹脂、ガラスが流れて厚みが均一にならず、30重量部以上では、プレス時のフローが悪く表面が平滑にならないため好ましくない。
【0011】
模様シート3には、薄葉紙、チタン紙、リンター紙、不織布等の原紙に通常の印刷方法で各種模様や柄が印刷されているものが用いられる。樹脂フィルム4には、アクリルフィルム、ポリカーボネイトフィルム、ポリエステルフィルム等を用いることができるが、鏡面仕上がりが良好で加工しやすい点でアクリルフィルムが好ましい。
【0012】
次に、本発明の鏡面仕上げ繊維強化樹脂積層板1の製造方法については、図2に示すように、一定速で移動する下部キャリアフィルム5上に増粘した不飽和ポリエステル樹脂6を流し込み、その上にガラス繊維チョップドストランドからなるガラス繊維マット7を供給し、含浸ローラー8により樹脂にガラス繊維マット7を含浸させる。次に模様シート3と樹脂フィルム4と上部キャリアフィルム9を順次供給して積層後加圧し、増粘した不飽和ポリエステル樹脂6を樹脂フイルム4と下部キャリアフィルム5との間に充填し、スクイズローラー10でスクイズし脱泡すると共に所定の厚さにした後、加熱器11で加熱硬化し、半硬化状態の繊維強化樹脂積層体12を得る。次に半硬化状態の繊維強化樹脂積層体12を加圧機13にて、加熱しながら鏡面板を用いて加圧する鏡面プレスで鏡面仕上げ繊維強化樹脂積層板1が得られる。鏡面プレスの条件としては、プレス圧力2〜70kgf/cm、プレス温度80〜140℃、プレス時間10〜40分の範囲で可能であるが、増粘剤の配合割合、仕上がり状態からプレス圧力30〜50kgf/cm、プレス温度120℃、プレス時間30分が好ましい。
【0013】
【実施例】
後記の製造条件で、図2の方法によりガラス繊維強化樹脂2の上に模様シート3であるチタン紙、さらにその上に樹脂フィルム4であるアクリルフィルムが、一体となった、ガラス繊維層のガラスパターンが透けて見えず、かつ剛性のある厚さ0.8mmの鏡面仕上げ繊維強化樹脂積層板1を製造した。
【0014】
<製造条件>
a.上下キャリアフィルム:ポリエチレンテレフタレート樹脂製、厚さ25μm
b.樹脂液配合組成:
不飽和ポリエステル樹脂 X−6504 100重量部
日本ユピカ(株)製
ゼオンアクリルレジン F−303 10重量部
ゼオン化成(株)製
c.補強用繊維:ガラスチョップドストランドマット 1PLY
日東紡績(株)製 MC450N
d.模様紙:チタン紙 N−233 100g/m 1PLY
大日本印刷(株)製
e.表面層:アクリルフィルム 厚さ200μm 1PLY
三菱レーヨン(株)製
f.加熱条件 :90〜115℃
g.ライン速度:3m/分
h.鏡面プレス条件:
プレス圧力:30kgf/cm
プレス温度:120℃
プレス時間:30分
【0015】
[評価]
表面粗さ計で表面を測定すると、従来の積層板の平均表面粗さは0.22μmであり、本発明の鏡面仕上げ繊維強化樹脂積層板の平均表面粗さは、0.04μmと大巾に改善された。
【0016】
【発明の効果】
本発明は、以上説明したように上表面層に樹脂フィルム、中間層に模様シート、下層に増粘した樹脂を含浸した無機質繊維層の構成からなる鏡面仕上げ繊維強化樹脂積層板であるので、研磨の手間もなく、相性、なじみ、ひけも改善され、また仕上がりの均一性も良くなり、さらにガラスパターンの透けもない積層板を容易に得ることができる効果を有する。
【図面の簡単な説明】
【図1】 本発明の鏡面仕上げ繊維強化樹脂積層板の概略断面図である。
【図2】 本発明における鏡面仕上げ繊維強化樹脂積層板の製造方法一例を示す概略説明図である。
【符号の説明】
1 鏡面仕上げ繊維強化樹脂積層板
2 ガラス繊維強化樹脂層
3 模様シート
4 樹脂フィルム
5 下部キャリアフィルム
6 不飽和ポリエステル樹脂
7 ガラス繊維マット
8 含浸ローラー
9 上部キャリアフィルム
10 スクイズローラー
11 加熱器
12 繊維強化樹脂積層体
13 加圧機
[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a mirror-finished fiber reinforced resin laminate used for a wall surface of a peripheral part of a water such as a bathroom, a washroom, and a toilet, and a method for producing the same.
[0002]
[Prior art]
Conventionally, mirror-finished fiber reinforced resin laminates used for bathroom wall surfaces, etc., polish the surface of a pre-molded fiber reinforced resin plate to give a smooth surface, and provide a resin layer on it or pattern paper The resin layer is provided on the cover, and then the film is covered and cured. However, the mirror-finished fiber reinforced resin plate produced in this way has problems of polishing and compatibility with the polished surface, familiarity, and sink marks, and also has a uniform finish and an internal fiber layer pattern. It has been desired to improve the weather resistance and durability of the resin layer that can be seen through, and further cover the fiber reinforced resin plate. On the other hand, in JP-A-7-285207, a resin having a thermosetting resin-impregnated paper or printing paper on a base material, and a thermosetting resin composition object placed thereon and subjected to mirror press A method for producing a decorative board is described. Mirror-finished resin decorative boards made by this method can be obtained relatively efficiently without the need for surface grinding and the like, but the surface has an agar-like thermosetting property such as unsaturated polyester resin. Since the resin composition object is molded as it is, a certain degree of mirror surface state can be obtained, but smoothness and glossiness are still insufficient, and surface strength, plate rigidity and weight are not sufficient.
[0003]
[Problems to be solved by the invention]
In view of the above situation, the present invention aims to improve the work of polishing, compatibility, familiarity, sink marks, uniformity of the finish, transparency of the glass pattern, weather resistance / durability of the resin layer, especially the upper surface. A layer of resin film is provided, and a special thermosetting type resin with increased viscosity is mirror-finished to improve the uniformity of the finish. The issue is to provide.
[0004]
[Means for Solving the Problems]
The present invention addresses these issues by laminating and integrally molding a resin film on the upper surface layer, a pattern sheet on the intermediate layer, and an inorganic fiber layer impregnated with a resin containing a thickener in the lower layer. The use of a mirror-finished fiber-reinforced resin laminate having a layer structure is a means for solving the problems.
[0005]
The lower inorganic fiber layer is a glass fiber reinforced resin layer impregnated with 5 to 30 parts by weight of a methacrylic acid-alkyl methacrylate copolymer as a thickener with respect to 100 parts by weight of the unsaturated polyester resin. That means. Furthermore, it is preferable to use an acrylic film as the resin film because it has a good mirror finish and is easy to process.
[0006]
The mirror-finished fiber-reinforced resin laminate supplies a thickened resin on the lower carrier film, supplies inorganic fibers on the resin and impregnates the resin, and then supplies a pattern sheet thereon, A means is to use a manufacturing method in which a resin film is supplied onto a sheet, an upper carrier film is further supplied onto the sheet, and integrally formed by roller pressurization, followed by mirror pressing.
[0007]
The inorganic fibers are preferably glass fibers because of their good cost, strength, and finished processing, and glass fibers such as chopped strands, nonwoven fabrics, woven fabrics, and knitted fabrics are preferably used. Combinations of materials can also be used.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic sectional view showing one embodiment of a mirror-finished fiber-reinforced resin laminate of the present invention. FIG. 2 is a schematic explanatory view of a process example showing a method for producing a mirror-finished fiber-reinforced resin laminate of the present invention.
[0009]
The mirror-finished fiber reinforced resin laminate 1 of the present invention has a configuration in which a pattern sheet 3 and a resin film 4 are laminated on a glass fiber reinforced resin layer 2 as shown in FIG. The glass fiber reinforced resin layer 2 is formed by impregnating glass fibers with an unsaturated polyester resin thickened by blending a methacrylic acid-alkyl methacrylate copolymer. The resin film 4 is mirror finished by heating and mirror pressing the surface with a mirror plate.
[0010]
About the glass fiber used for the glass fiber reinforced resin layer 2, a chopped strand, a nonwoven fabric, a woven fabric, a knitted fabric etc. can be used. The resin impregnated in the glass fiber is preferably an unsaturated polyester resin. As the type of the unsaturated polyester resin, any resin conventionally used for fiber reinforced resin plates can be used in addition to the ortho type and the iso type. it can. In order to increase the viscosity of the unsaturated polyester resin, it is preferable to add a methacrylic acid-alkyl methacrylate copolymer, and the mixing ratio is methacrylic acid-alkyl methacrylate copolymer with respect to 100 parts by weight of the unsaturated polyester resin. It is preferable to blend 5 to 30 parts by weight of the product. If it is 5 parts by weight or less, the flow is too good at the time of pressing and the resin and glass flow and the thickness is not uniform, and if it is 30 parts by weight or more, the flow at the time of pressing is poor and the surface is not smooth.
[0011]
As the pattern sheet 3, there is used a base paper such as thin paper, titanium paper, linter paper, non-woven fabric, etc., on which various patterns and patterns are printed by a normal printing method. As the resin film 4, an acrylic film, a polycarbonate film, a polyester film, or the like can be used, but an acrylic film is preferable because it has a good mirror finish and is easy to process.
[0012]
Next, about the manufacturing method of the mirror surface finish fiber reinforced resin laminated board 1 of this invention, as shown in FIG. 2, the unsaturated polyester resin 6 thickened on the lower carrier film 5 which moves at constant speed is poured, A glass fiber mat 7 made of glass fiber chopped strands is supplied on top, and the glass fiber mat 7 is impregnated into the resin by an impregnation roller 8. Next, the pattern sheet 3, the resin film 4 and the upper carrier film 9 are sequentially supplied, stacked and pressurized, and the thickened unsaturated polyester resin 6 is filled between the resin film 4 and the lower carrier film 5. After squeezing and defoaming at 10 and making it a predetermined thickness, it is cured by heating with a heater 11 to obtain a semi-cured fiber reinforced resin laminate 12. Next, the mirror-finished fiber-reinforced resin laminate 1 is obtained by a mirror press that pressurizes the fiber-reinforced resin laminate 12 in a semi-cured state using a mirror plate while being heated by a pressurizer 13. The conditions of the mirror press can be a press pressure of 2 to 70 kgf / cm 2 , a press temperature of 80 to 140 ° C., and a press time of 10 to 40 minutes. ˜50 kgf / cm 2 , press temperature 120 ° C., press time 30 minutes are preferable.
[0013]
【Example】
Under the manufacturing conditions described later, the glass of the glass fiber layer in which the titanium paper as the pattern sheet 3 and the acrylic film as the resin film 4 are further integrated on the glass fiber reinforced resin 2 by the method of FIG. A mirror-finished fiber-reinforced resin laminate 1 having a thickness of 0.8 mm and having a rigid pattern, in which the pattern could not be seen through, was manufactured.
[0014]
<Production conditions>
a. Upper and lower carrier films: made of polyethylene terephthalate resin, thickness 25μm
b. Resin liquid composition:
Unsaturated polyester resin X-6504 100 parts by weight Nippon Iupika Co., Ltd. ZEON Acrylic Resin F-303 10 parts by weight ZEON KASEI CO., LTD. C. Reinforcing fiber: Glass chopped strand mat 1PLY
MC450N manufactured by Nittobo Co., Ltd.
d. Pattern paper: Titanium paper N-233 100 g / m 2 1PLY
Dai Nippon Printing Co., Ltd. e. Surface layer: Acrylic film Thickness 200μm 1PLY
Mitsubishi Rayon Co., Ltd. f. Heating conditions: 90-115 ° C
g. Line speed: 3 m / min h. Mirror press conditions:
Press pressure: 30 kgf / cm 2
Press temperature: 120 ° C
Press time: 30 minutes [0015]
[Evaluation]
When measuring the surface with a surface roughness meter, the average surface roughness of the conventional laminate is 0.22 μm, and the average surface roughness of the mirror-finished fiber-reinforced resin laminate of the present invention is as wide as 0.04 μm. Improved.
[0016]
【The invention's effect】
As described above, the present invention is a mirror-finished fiber-reinforced resin laminate composed of a resin film on the upper surface layer, a pattern sheet on the intermediate layer, and an inorganic fiber layer impregnated with a thickened resin in the lower layer. Thus, compatibility, familiarity, sink marks are improved, the uniformity of the finish is improved, and there is an effect that it is possible to easily obtain a laminated plate having no glass pattern transparency.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a mirror-finished fiber-reinforced resin laminate of the present invention.
FIG. 2 is a schematic explanatory view showing an example of a method for producing a mirror-finished fiber-reinforced resin laminate in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mirror surface finish fiber reinforced resin laminated board 2 Glass fiber reinforced resin layer 3 Pattern sheet 4 Resin film 5 Lower carrier film 6 Unsaturated polyester resin 7 Glass fiber mat 8 Impregnation roller 9 Upper carrier film 10 Squeeze roller 11 Heater 12 Fiber reinforced resin Laminate 13 Pressurizer

Claims (4)

上表面層に樹脂フィルム、中間層に模様シート、下層に増粘剤配合の樹脂を含浸した無機質繊維層の構成で積層して、一体成型してなる三層構造の鏡面仕上げ繊維強化樹脂積層板であって、前記下層の無機質繊維層が不飽和ポリエステル樹脂100重量部に対し増粘剤としてメタクリル酸−メタクリル酸アルキル共重合物を5〜30重量部配合して樹脂含浸したガラス繊維強化樹脂層であることを特徴とする鏡面仕上げ繊維強化樹脂積層板。A three-layer mirror-finished fiber-reinforced resin laminate , which is formed by laminating with a structure of an inorganic fiber layer impregnated with a resin film on the upper surface layer, a pattern sheet on the intermediate layer, and a resin containing a thickener in the lower layer. A glass fiber reinforced resin layer in which the lower inorganic fiber layer is impregnated with 5 to 30 parts by weight of a methacrylic acid-alkyl methacrylate copolymer as a thickener with respect to 100 parts by weight of an unsaturated polyester resin. A mirror-finished fiber-reinforced resin laminate , characterized in that 前記樹脂フィルムが、アクリルフィルムであることを特徴とする請求項1に記載の鏡面仕上げ繊維強化樹脂積層板。2. The mirror-finished fiber-reinforced resin laminate according to claim 1, wherein the resin film is an acrylic film. 下部キャリアフィルム上に増粘した樹脂を供給し、該樹脂の上に無機質繊維を供給して樹脂含浸後、その上に模様シートを供給し、該模様シート上に樹脂フィルムを供給し、更にその上に上部キャリアフィルムを供給してローラ加圧で一体に連続成形した後、鏡面プレスする鏡面仕上げ繊維強化樹脂積層板の製造方法であって、前記増粘した樹脂が不飽和ポリエステル樹脂100重量部に対し増粘剤としてメタクリル酸−メタクリル酸アルキル共重合物を5〜30重量部配合した樹脂であることを特徴とする鏡面仕上げ繊維強化樹脂積層板の製造方法。Supply a thickened resin on the lower carrier film, supply inorganic fibers on the resin, impregnate the resin, supply a pattern sheet thereon, supply a resin film on the pattern sheet, and further A method for producing a mirror-finished fiber-reinforced resin laminate, which is supplied with an upper carrier film and continuously molded integrally with a roller and then mirror-pressed. The thickened resin is 100 parts by weight of an unsaturated polyester resin. A method for producing a mirror-finished fiber-reinforced resin laminate, which is a resin containing 5 to 30 parts by weight of a methacrylic acid-alkyl methacrylate copolymer as a thickener . 下部キャリアフィルム上に増粘した樹脂を供給し、該樹脂の上にガラスチョップドストランドを供給し、更にガラスクロスを重ねて供給して樹脂含浸後、その上に模様シートを供給し、該模様シート上に樹脂フィルムを供給し、更にその上に上部キャリアフィルムを供給してローラ加圧で一体に連続成形した後、鏡面プレスする鏡面仕上げ繊維強化樹脂積層板の製造方法であって、前記増粘した樹脂が不飽和ポリエステル樹脂100重量部に対し増粘剤としてメタクリル酸−メタクリル酸アルキル共重合物を5〜30重量部配合した樹脂であることを特徴とする請求項記載の鏡面仕上げ繊維強化樹脂積層板の製造方法。Supplying a thickened resin on the lower carrier film, supplying glass chopped strands on the resin, supplying glass cloth in an overlapping manner, impregnating the resin, supplying a pattern sheet thereon, and supplying the pattern sheet A method of manufacturing a mirror-finished fiber-reinforced resin laminate , in which a resin film is supplied thereon, and an upper carrier film is further supplied thereon and integrally formed by roller pressurization, and then mirror-finished. 4. The mirror-finished fiber reinforced fiber according to claim 3, wherein the resin is a resin in which 5 to 30 parts by weight of a methacrylic acid-alkyl methacrylate copolymer is blended as a thickener with respect to 100 parts by weight of the unsaturated polyester resin. A method for producing a resin laminate.
JP30508899A 1999-10-27 1999-10-27 Mirror finish fiber reinforced resin laminate and method for producing the same Expired - Fee Related JP4329186B2 (en)

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