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JP2004142347A - Surface decorated article and method for decorating surface - Google Patents

Surface decorated article and method for decorating surface Download PDF

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Publication number
JP2004142347A
JP2004142347A JP2002311791A JP2002311791A JP2004142347A JP 2004142347 A JP2004142347 A JP 2004142347A JP 2002311791 A JP2002311791 A JP 2002311791A JP 2002311791 A JP2002311791 A JP 2002311791A JP 2004142347 A JP2004142347 A JP 2004142347A
Authority
JP
Japan
Prior art keywords
decorative sheet
substrate
color
adhesive
base material
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.)
Pending
Application number
JP2002311791A
Other languages
Japanese (ja)
Inventor
Shinya Tsujimoto
逵 本 信 也
Tatsuki Ochiai
落 合 達 己
Koichi Okamoto
岡 本 浩 一
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.)
Trinity Industrial Corp
Sunstar Engineering Inc
Original Assignee
Trinity Industrial Corp
Sunstar Engineering Inc
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 Trinity Industrial Corp, Sunstar Engineering Inc filed Critical Trinity Industrial Corp
Priority to JP2002311791A priority Critical patent/JP2004142347A/en
Publication of JP2004142347A publication Critical patent/JP2004142347A/en
Pending legal-status Critical Current

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  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the cost of inventory control in forming and storing each color surface decorated article to be subjected to leather grain processing at each color, and allow the surface decorated article to be formed in an optional color. <P>SOLUTION: When a decorated sheet (3) carried out similar leather grain processing on the surface thereof is laminated on a substrate (2) carried out the leather grain processing on the surface by vacuum forming, an adhesive layer (7) formed of an adhesive (6) mixed with a particulate hollow filler (5) which enters into the recessed groove of a leather grain design provided on the surface of the substrate (2) is formed between the substrate (2) and the decorated sheet (3). <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、表面に皮しぼ加工が施された基材の上から、表面に別の皮しぼ加工が施された加飾シートを真空成形により貼り付けた表面加飾品及びその加飾方法に関する。
【0002】
【従来の技術】
自動車内装部品などのプラスチック製品は、見栄えのよさ(高級感)、ソフト感、成形容易性、低コストが要求され、これらの性能を満足する表面加飾として「皮しぼ加工」と称する加飾方法が知られている。
【0003】これは、皮革製品に見られるような数ミリ程度の細かいうろこ状の凹凸をプラスチック製品の表面に施すものであり、プラスチック成形金型に皮しぼ模様を施しておくだけで、射出成形と同時に表面加飾を行うことができ、質感の向上と低コスト化を満足する。
【0004】ところで、最近では自動車居室内の色もユーザの好みに応じてオーダーできるようになっており、自動車メーカ側もそのオーダーカラーの色数分の内装品をそろえておき、ユーザのオーダに即座に対応できる体制を整えている。
【0005】
【発明が解決しようとする課題】
しかしながら、前述したような「皮しぼ加工」が施される自動車内装品は、射出成形と同時に表面加飾がなされることから、自動車内装品の色は成形機に投入したプラスチックの色で決まり、したがって、ある色の自動車内装品を成形したときに、成形機内に投入したその色のプラスチックを使いきるまで、ある程度の数量の自動車内装品を一度に成形しなければ、異なる色の自動車内装品を成形することができない。
【0006】即ち、射出成形のようなプラスチック成形は、現在成形中のプラスチックでの成形が終了しなければ、それと異なる色のプラスチックでの成形ができないので、オーダーの入ったときに即座にそのオーダーカラーのプラスチックで成形を行うことができない。
このため、予め各オーダーカラーごとに自動車内装品を製造しているが、在庫が増えるだけでなく、在庫管理に要するコストが嵩むという問題がある。
【0007】そこで本発明は、「皮しぼ加工」が施される表面加飾品を各オーダーカラーごとに射出成形することなく、在庫管理に係るコストを低減して、表面加飾品を任意の色に成形できるようにすることを技術的課題としている。
【0008】
【課題を解決するための手段】
この課題を解決するために、本発明は、表面に皮しぼ加工が施された基材の上から、表面に同様の皮しぼ加工が施された加飾シートを真空貼付させた表面加飾品において、基材と加飾シートとの間に、基材表面に施された皮しぼ加工の凹部に入り込む微粒状の中空フィラーを混入した接着剤からなる接着層が形成されていることを特徴とする。
【0009】これによれば、例えば、基材を標準色となる色(例えば、受注量の多い黒色)のプラスチックで成形し、且つ、その表面に皮しぼ加工が施しておけば、標準色のオーダーが入ったときはその基材単体で標準色の製品として使用できる。
また、加飾シートを基材の色とは異なるオーダーカラーで形成することにより、特定の色のオーダーが入ったときには、そのオーダーカラーの加飾シートを貼り付けることにより、加飾シートの表面には皮しぼ加工が施されているので、これを貼り付けた表面加飾品の表面も皮しぼ加工が施されることとなる。
【0010】ここで、基材と加飾シートは、微粒状の中空フィラーを混入した接着剤で接着されているので、加飾シートを貼り込んだときに接着剤に含まれている微粒状の中空フィラーが基材の表面に施された皮しぼ加工の凹溝の奥深く入り込んで、基材と加飾シートの間に形成される微細な隙間がなくなるので、接着力が格段に向上し、剥がれ難くなる。
【0011】その結果、真空成形により基材と加飾シートを密着させたときに加飾シートが前後左右方向に引っ張られて、加飾シートと基材との間で剪断力が作用しても、加飾シートは基材に強固に接着されているので、加飾シートが剪断方向にずれることがなく、したがって、加飾シートの表面に形成された皮しぼ模様の凹凸が平らになることもない。
【0012】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて具体的に説明する。
図1は本発明に係る表面加飾品を示す説明図、図2はその拡大断面図、図3はその製造工程を示す説明図である。
【0013】図1に示す自動車内装品(表面加飾品)1は、表面に皮しぼ加工が施された基材2の上から、表面に同様の皮しぼ加工が施された加飾シート3を真空成形により貼り付けて形成されている。
【0014】基材2は、自動車内装品として標準色となる使用頻度の最も高い色のプラスチック(例えば黒色)で形成され、それ単体でその色の製品として使用できる程度に仕上られている。
また、真空成形用の基材2としても使用できるように、その表裏を貫通する直径0.5〜1mm程度の微細な真空吸引用の空気孔4…が所定間隔で形成されている。
【0015】また、加飾シート3は、基材2の色とは異なるオーダーカラー(灰、茶、白、ベージュ、赤など)で形成されており、基材2と加飾シート3との間に、基材2の表面に施された皮しぼ加工の凹部に入り込む微粒状の中空フィラー5を混入した接着剤6からなる接着層7が形成されている。
【0016】この中空フィラー5としては,例えば、直径70μm程度のガラス製微粒状中空球が用いられ、その混合比率は、中空フィラー:接着剤が略1:5となるように選定されている。
なお、中空フィラー5の直径は皮しぼ加工の凹溝の奥まで入り込む大きさに選定され、実験の結果、直径50〜100μm程度が好ましい。
【0017】この自動車内装品1を成形する場合、まず、図3(a)に示すように、表面に皮しぼ加工が施された加飾シート3の裏面に中空フィラー5を混入したホットメルト型接着剤6を塗布する。
このホットメルト型接着剤6としては、例えば、架橋性官能基を有する熱可塑性ポリマーに架橋剤が配合され、加熱により架橋するように構成されたものが用いられ、予め加飾シート3に塗布して使用する。
次いで、これを加熱して接着剤6を溶融させた状態で、図3(b)に示すように、治具8にセットされた基材2の表面に被せて、その周囲をクランパ9で固定し、基材2に形成された空気孔4…及び治具8に形成された吸引孔10から真空引きすると、図3(c)に示すように加飾シート3が基材2に密着する。
【0018】この際、基材2と加飾シート3は、微粒状の中空フィラー5を混入した接着剤6で接着されるので、加飾シート3を真空成形で貼り付けたときに接着剤6に含まれている微粒状の中空フィラー5が基材2の表面に形成された皮しぼ模様の凹溝の奥まで深く入り込むことになる。
その結果、基材2と加飾シート3の間に形成される微細な隙間がなくなって接着面積が広くなるので、加飾シート3を真空成形で貼り付けた瞬間から接着剤6により大きな拘束力が作用し、両者は剥がれ難くなる。
【0019】その結果、接着剤6が完全に硬化する前から加飾シート3の接着部分が基材2に強固に拘束されるので、真空成形により基材2と加飾シート3を密着させることにより加飾シート3を前後左右方向に引っ張る引張力が作用しても、その表面に形成された皮しぼ加工の凹凸が平らになることがない。
【0020】したがって、標準色で成形した基材2と異なる色の加飾シート3を用意しておけば、標準色の注文が入ったときは、基材2をそのまま標準色の製品として出荷し、それとは異なる色の注文が入ったときはその都度、基材2の上からその色の加飾シート3を真空成形により貼り付けるだけで、表面に皮しぼ加工が施された任意の色の自動車内装品1を成形することができるので、多数の在庫を保管する手間もない。
【0021】また、クッション性のある加飾シート3を基材2に貼り付けることにより、ソフト感を有する高級仕様の自動車内装品1を形成できる。
この場合は、基材2と異なる色の加飾シート3を用いる場合に限らず、標準色の高級自動車内装品1を成形する場合は、基材2と同じ標準色の加飾シート3を使用すればよい。
【0022】すなわち、同じ車種に取り付ける同じ色の自動車内装品でも、スタンダードタイプなどの廉価車とデラックスタイプなどの高級車では品質が異なり、スタンダードタイプにはプラスチック成形により皮しぼ加工を施しただけのソフト感の少ない基材2を内装品としてそのまま装着し、デラックスタイプは加飾シート3を貼り付けて形成した自動車内装品1を装着すればよい。
したがって、スタンダードタイプの内装品として使用されている成形品が、高級仕様の自動車内装品1を成形する場合の基材2となるので、専用の基材を別途形成する必要がなく、部品の種類を減らすことができる。
【0023】そして、基材2の表面に皮しぼ加工が施されていても、加飾シート3を接着する接着剤6には中空フィラー5が混入されているので、加飾シート3が基材2に強固に接着され、また、真空成形する際に加飾シート3の表面に施された皮しぼ模様が消失することもない。
【0024】
【発明の効果】
以上述べたように、本発明によれば、表面に皮しぼ加工が施された基材の上から、同様の皮しぼ加工が施された加飾シートをその皮しぼ加工を消失させることなく貼り付けることができるので、基材を標準色で成形し、それと異なる色の加飾シートを用意しておけば、注文に応じて「皮しぼ加工」が施される任意の色の表面加飾品を成形することができ、「皮しぼ加工」が施される表面加飾品を各色ごとに射出成形することなく、在庫管理に係るコストを低減して、高級感ある任意の色の表面加飾品を成形できるという大変優れた効果を奏する。
【図面の簡単な説明】
【図1】本発明に係る表面加飾品を示す説明図。
【図2】その拡大断面図。
【図3】その製造工程を示す説明図。
【符号の説明】
1………自動車内装品(表面加飾品)
2………基材
3………加飾シート
4………空気孔
5………中空フィラー
6………接着剤
7………接着層
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a surface-decorated product in which a decorative sheet having another surface-grained surface is adhered by vacuum molding from a base material having a surface-grained surface, and a decoration method thereof.
[0002]
[Prior art]
Plastic products such as automobile interior parts are required to have good appearance (high-class feeling), softness, ease of molding, and low cost, and a decoration method called "skin graining" is a surface decoration that satisfies these performances. It has been known.
[0003] In this method, fine scale-like irregularities of several millimeters, such as those found in leather products, are formed on the surface of a plastic product. At the same time, surface decoration can be performed, which satisfies the improvement of texture and cost reduction.
[0004] Recently, it has become possible to order the colors of the interior of a car according to the user's preference. The car maker also prepares interior goods for the number of colors of the order color and arranges them according to the order of the user. We have a system that can respond immediately.
[0005]
[Problems to be solved by the invention]
However, as described above, car interior parts that are subjected to "skin graining" are decorated at the same time as injection molding, so the color of the car interior parts is determined by the color of the plastic put into the molding machine, Therefore, if a certain quantity of automobile interior parts is not molded at one time until the plastic of that color put into the molding machine is used up when molding a vehicle interior article of a certain color, the automobile interior parts of a different color are produced. Cannot be molded.
That is, in plastic molding such as injection molding, molding with a plastic of a different color cannot be performed unless molding with the plastic currently being molded is completed. Inability to mold with colored plastic.
For this reason, automobile interior parts are manufactured in advance for each order color, but there is a problem that not only the inventory increases but also the cost required for inventory management increases.
Therefore, the present invention reduces the cost of inventory control and makes the surface-decorated product an arbitrary color without injection molding the surface-decorated product to be subjected to “skin graining” for each order color. It is a technical problem to enable molding.
[0008]
[Means for Solving the Problems]
In order to solve this problem, the present invention relates to a surface-decorated product obtained by vacuum-adhering a decorative sheet subjected to a similar graining process on a surface from a base material having a grained surface. Wherein, between the base material and the decorative sheet, an adhesive layer made of an adhesive mixed with fine-grained hollow filler that enters the concave portion of the graining process applied to the base material surface is formed. .
[0009] According to this, for example, if the base material is molded from a plastic of a standard color (for example, a black color that is frequently ordered) and its surface is subjected to graining, the standard color can be obtained. When an order is placed, the base material alone can be used as a standard color product.
In addition, by forming the decorative sheet in an order color different from the color of the base material, when a specific color order is entered, the decorative sheet of that order color is attached to the surface of the decorative sheet. Since the surface is subjected to graining, the surface of the surface-decorated article to which this is attached is also grained.
Here, since the base material and the decorative sheet are adhered by an adhesive mixed with a fine hollow filler, the fine granular material contained in the adhesive when the decorative sheet is attached is attached. The hollow filler penetrates deep into the grooves of the graining process applied to the surface of the base material, eliminating the fine gaps formed between the base material and the decorative sheet. It becomes difficult.
As a result, even when the decorative sheet is pulled in the front-rear and left-right directions when the base material and the decorative sheet are brought into close contact with each other by vacuum forming, even if a shear force acts between the decorative sheet and the base material. Since the decorative sheet is firmly adhered to the base material, the decorative sheet does not shift in the shearing direction, and therefore, the unevenness of the grain pattern formed on the surface of the decorative sheet can be flattened. Absent.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is an explanatory view showing a surface-decorated product according to the present invention, FIG. 2 is an enlarged sectional view thereof, and FIG. 3 is an explanatory view showing a manufacturing process thereof.
An automobile interior product (surface-decorated product) 1 shown in FIG. 1 includes a decorative sheet 3 having a surface subjected to a similar graining process, from a base material 2 having a surface grained. It is formed by sticking by vacuum forming.
The base material 2 is formed of a most frequently used color plastic (for example, black), which is a standard color as an automobile interior product, and is finished to such an extent that it can be used alone as a product of that color.
Further, air holes 4 for fine vacuum suction having a diameter of about 0.5 to 1 mm penetrating through the front and back surfaces thereof are formed at predetermined intervals so that the air holes 4 can be used as the base material 2 for vacuum forming.
The decorative sheet 3 is formed in an order color (eg, ash, brown, white, beige, red, etc.) different from the color of the base material 2. Further, an adhesive layer 7 made of an adhesive 6 mixed with fine-grained hollow fillers 5 which enter recesses of the graining process provided on the surface of the base material 2 is formed.
As the hollow filler 5, for example, fine glass hollow spheres having a diameter of about 70 μm are used, and the mixing ratio thereof is selected so that the ratio of the hollow filler to the adhesive is approximately 1: 5.
In addition, the diameter of the hollow filler 5 is selected so as to be deep into the concave groove of the graining process, and as a result of an experiment, the diameter is preferably about 50 to 100 μm.
In the case of molding the automobile interior part 1, first, as shown in FIG. 3 (a), a hot-melt mold in which a hollow filler 5 is mixed on the back surface of the decorative sheet 3 whose surface is grained. The adhesive 6 is applied.
As the hot-melt type adhesive 6, for example, a thermoplastic polymer having a crosslinkable functional group mixed with a crosslinker and configured to be crosslinked by heating is used. To use.
Next, in a state where the adhesive 6 is melted by heating, the surface of the substrate 2 set on the jig 8 is covered with the adhesive 6 as shown in FIG. Then, when vacuum is drawn from the air holes 4 formed in the base material 2 and the suction holes 10 formed in the jig 8, the decorative sheet 3 comes into close contact with the base material 2 as shown in FIG.
At this time, since the base material 2 and the decorative sheet 3 are adhered by the adhesive 6 mixed with the fine-grained hollow filler 5, the adhesive 6 is adhered when the decorative sheet 3 is attached by vacuum forming. The fine-grained hollow filler 5 contained in the base material 2 penetrates deeply into the grain-shaped groove formed on the surface of the substrate 2.
As a result, a fine gap formed between the base material 2 and the decorative sheet 3 is eliminated and the bonding area is increased, so that the adhesive 6 has a greater restraining force from the moment the decorative sheet 3 is attached by vacuum forming. Act on each other, making it difficult for both to peel off.
As a result, the adhesive portion of the decorative sheet 3 is firmly restrained by the base material 2 before the adhesive 6 is completely cured, so that the base material 2 and the decorative sheet 3 are adhered to each other by vacuum forming. Therefore, even if a tensile force for pulling the decorative sheet 3 in the front-rear, left-right direction acts, the unevenness of the graining formed on the surface does not become flat.
Therefore, if a decorative sheet 3 of a color different from the base material 2 molded in the standard color is prepared, when the standard color is ordered, the base material 2 is shipped as it is as a standard color product. Whenever an order of a different color is received, simply apply the decorative sheet 3 of that color from above the base material 2 by vacuum molding, and the surface of any color is subjected to graining. Since the automobile interior article 1 can be molded, there is no need to store a large number of stocks.
Further, by attaching the decorative sheet 3 having cushioning property to the base material 2, it is possible to form a high-grade automotive interior product 1 having a soft feeling.
In this case, the decorative sheet 3 having the same standard color as that of the base material 2 is used, not only when the decorative sheet 3 having a color different from that of the base material 2 is used, but also when forming a high-grade automotive interior product 1 having a standard color. do it.
That is, the quality of a car interior component of the same color to be attached to the same vehicle model is different between a low-priced car such as a standard type and a luxury car such as a deluxe type. What is necessary is just to mount the base material 2 with little softness as an interior product as it is, and to attach the interior interior product 1 formed by attaching the decorative sheet 3 to the deluxe type.
Therefore, since the molded product used as the standard type interior product is the base material 2 for molding the high-grade automotive interior product 1, there is no need to separately form a dedicated base material, and the type of the component can be reduced. Can be reduced.
Even if the surface of the substrate 2 is subjected to graining, the hollow filler 5 is mixed in the adhesive 6 for bonding the decorative sheet 3, so that the decorative sheet 3 2, and the grain pattern applied to the surface of the decorative sheet 3 during vacuum forming does not disappear.
[0024]
【The invention's effect】
As described above, according to the present invention, a decorative sheet subjected to a similar graining process is applied from above a substrate having a grained surface to the surface without losing the graining process. If the base material is molded in a standard color and a decorative sheet of a different color is prepared, a surface decorative product of any color that is subjected to "skin graining" according to the order can be attached. It can be molded, and it is possible to reduce the cost related to inventory management and form high-quality surface decoration products of any color without injection molding surface decoration products that are subjected to "skin graining" for each color. It has an excellent effect of being able to do it.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a surface-decorated product according to the present invention.
FIG. 2 is an enlarged sectional view thereof.
FIG. 3 is an explanatory view showing the manufacturing process.
[Explanation of symbols]
1 …… Car interior goods (surface decoration goods)
2 ... Base material 3 ... Decorative sheet 4 ... Air holes 5 ... Hollow filler 6 ... Adhesive 7 ... Adhesive layer

Claims (5)

表面に皮しぼ加工が施された基材の上から、表面に同様の皮しぼ加工が施された加飾シートを真空成形により貼り付けた表面加飾品において、基材と加飾シートとの間に、基材の表面に施された皮しぼ模様の凹溝に入り込む微粒状の中空フィラーを混入した接着剤からなる接着層が形成されていることを特徴とする表面加飾品。In a surface-decorated product in which a decorative sheet with the same graining applied to the surface is applied by vacuum molding from the top of the substrate having the grained surface to the surface, between the substrate and the decorative sheet A surface-decorated article, wherein an adhesive layer made of an adhesive mixed with fine-grained hollow filler that enters into a grain-shaped groove provided on the surface of the substrate is formed on the surface of the substrate. 前記基材が、標準色となる色のプラスチックで形成されると共に、前記加飾シートが基材の色とは異なる任意の色で形成された請求項1記載の表面加飾品。The surface-decorated article according to claim 1, wherein the base material is formed of a plastic having a standard color, and the decorative sheet is formed of an arbitrary color different from the color of the base material. 前記中空フィラーが、直径50〜100μmのガラス製中空球である請求項1又は2記載の表面加飾品。The surface-decorated article according to claim 1, wherein the hollow filler is a glass hollow sphere having a diameter of 50 to 100 μm. 中空フィラー:接着剤の混合比率が、体積比で略1:5である請求項1乃至3記載の表面加飾品。4. The surface-decorated product according to claim 1, wherein the mixture ratio of the hollow filler and the adhesive is approximately 1: 5 in volume ratio. 表面に皮しぼ加工が施された基材の上から、表面に同様の皮しぼ加工が施された加飾シートを真空成形により貼り付けた表面加飾品において、加飾シートの裏面に中空フィラーを混入したホットメルト型接着剤を塗布し、これを加熱して接着剤を溶融させた状態で基材に被せた後、基材に形成された空気孔から真空引きして加飾シートを基材に密着させることを特徴とする表面加飾方法。On a surface-decorated product in which a decorative sheet with the same surface roughening applied on the surface is attached by vacuum forming from the top of the substrate whose surface is roughened, a hollow filler is applied to the back of the decorative sheet. After applying the mixed hot-melt adhesive and heating it to cover the substrate in a state where the adhesive is melted, the decorative sheet is evacuated by evacuating from the air holes formed in the substrate. Surface decoration method characterized by being closely adhered to the surface.
JP2002311791A 2002-10-25 2002-10-25 Surface decorated article and method for decorating surface Pending JP2004142347A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103395204A (en) * 2013-08-05 2013-11-20 格林精密部件(惠州)有限公司 Full-automatic vacuum decoration technology of injection part
JP2015205955A (en) * 2014-04-17 2015-11-19 日本特殊陶業株式会社 Adhesive for wafer heater and wafer heater using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103395204A (en) * 2013-08-05 2013-11-20 格林精密部件(惠州)有限公司 Full-automatic vacuum decoration technology of injection part
JP2015205955A (en) * 2014-04-17 2015-11-19 日本特殊陶業株式会社 Adhesive for wafer heater and wafer heater using the same

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