JP2016087586A - Masking material and manufacturing method thereof - Google Patents

Masking material and manufacturing method thereof Download PDF

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JP2016087586A
JP2016087586A JP2014228320A JP2014228320A JP2016087586A JP 2016087586 A JP2016087586 A JP 2016087586A JP 2014228320 A JP2014228320 A JP 2014228320A JP 2014228320 A JP2014228320 A JP 2014228320A JP 2016087586 A JP2016087586 A JP 2016087586A
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masking material
masked
surface layer
resin
shape
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JP6421015B2 (en
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小川 正則
Masanori Ogawa
正則 小川
藤井 慎
Shin Fujii
慎 藤井
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Nagoya Oil Chemical Co Ltd
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Nagoya Oil Chemical Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a masking material for securely protecting a portion to be masked from a surface treatment.SOLUTION: Masking materials, 12A and 12B, are used for protecting 3A, a portion to be masked on a surface of an article which should not be surface-treated, from the surface treatment. Each of the masking materials is formed in a shape in conformance with a shape of 3A, the portion to be masked, by using as a material a laminated sheet comprising: a top surface layer 121 made of a hard resin; and a back surface layer 122 made of a soft resin, which comes in contact with 3A, the portion to be masked. The top surface layer 121 made of a hard resin stabilizes a molded shape, and the back surface layer 122 made of a soft resin sticks firmly to 3A, the portion to be masked, when adhered to 3A, the portion to be masked, to prevent 3A, the portion to be masked, from being surface treated.SELECTED DRAWING: Figure 5

Description

本発明は、物品の表面の表面処理が施されてはいけない個所を該表面処理から保護するために使用されるマスキング材およびその製造方法に関するものである。   The present invention relates to a masking material used for protecting a portion of a surface of an article which should not be subjected to surface treatment from the surface treatment, and a method for producing the same.

従来、この種のマスキング材は物品の表面の表面処理を施されてはいけない個所(被マスキング個所)の形状に適合するように成形した硬質樹脂からなる。上記硬質樹脂としては、例えばポリプロピレン、ポリフェニレンオキサイド等が使用されている。
例えば特許文献1には、エンジニアリングプラスチックと、他の熱可塑性プラスチックとのポリマーアロイが開示されており、特許文献2には、ポリプロピレンにポリエチレンおよび/またはエチレン−プロピレン共重合体を配合した変性ポリプロピレンが開示されており、特許文献3には、アクリロニトリルとスチレンおよび/またはメチルメタクリレートとの共重合体成分と、合成ゴム成分とを含む熱可塑性樹脂シートが開示されている。
Conventionally, this type of masking material is made of a hard resin that is molded so as to conform to the shape of the portion that should not be subjected to surface treatment of the article (the portion to be masked). As the hard resin, for example, polypropylene, polyphenylene oxide or the like is used.
For example, Patent Document 1 discloses a polymer alloy of an engineering plastic and another thermoplastic plastic, and Patent Document 2 discloses a modified polypropylene in which polyethylene and / or ethylene-propylene copolymer is blended with polypropylene. Patent Document 3 discloses a thermoplastic resin sheet containing a copolymer component of acrylonitrile and styrene and / or methyl methacrylate and a synthetic rubber component.

特許第3573496号公報Japanese Patent No. 3573496 特開2004−261627号公報JP 2004-261627 A 特開2002−336748号公報JP 2002-336748 A 特開平6−192503号公報JP-A-6-192503 特開平5−93110号公報JP-A-5-93110 特開平8−41275号公報JP-A-8-41275

上記従来のマスキング材にあっては、安定した成形形状を確保するために、上記したような硬質樹脂が使用されている。しかし、硬質樹脂を材料としたマスキング材は、上記被マスキング個所に対する密着性に劣り、被保護個所が確実に保護されない場合があると云う問題点がある。   In the conventional masking material, the above-described hard resin is used in order to ensure a stable molding shape. However, the masking material made of a hard resin is inferior in adhesion to the masked portion, and there is a problem in that the protected portion may not be reliably protected.

本発明は上記従来の問題点を解消する手段として、本発明は、物品の表面の表面処理が施されてはいけない個所である被マスキング個所を該表面処理から保護するために使用されるマスキング材であって、硬質樹脂からなる表面層と、軟質樹脂からなり上記被マスキング個所に接する表面層とからなる積層シートを材料とすることを特徴とするマスキング材を提供する。
上記表面層は、JIS K6253に準じて測定された測定時間1秒のA硬さが50以下であることが望ましく、また上記表面層はポリプロピレン、ABS樹脂、AES樹脂またはポリフェニレンオキサイドを主体とした硬質樹脂からなり、上記表面層はスチレン系エラストマーからなることが望ましく、また上記裏面層の厚みは50μm以下に設定されることが望ましい。
また本発明では、物品の被マスキング個所の形状を非接触三次元測定機によって測定し、該測定によって得られたデータにもとづいて真空および/または圧空成形機の金型を作成し、該真空および/または圧空成形機の金型によって上記表面層と裏面層とからなる積層シートを使用して上記マスキング材を製造することを特徴とするマスキング材の製造方法が提供される。
As a means for solving the above-mentioned conventional problems, the present invention provides a masking material used for protecting a portion to be masked, which should not be subjected to surface treatment, from the surface treatment. A masking material is provided, characterized in that a laminated sheet comprising a surface layer made of a hard resin and a surface layer made of a soft resin and in contact with the portion to be masked is used.
The surface layer preferably has an A hardness of 50 seconds or less measured according to JIS K6253, and the surface layer is a hard material mainly composed of polypropylene, ABS resin, AES resin or polyphenylene oxide. The surface layer is preferably made of a styrene elastomer, and the thickness of the back layer is preferably set to 50 μm or less.
In the present invention, the shape of the masked portion of the article is measured with a non-contact three-dimensional measuring machine, and a vacuum and / or a pressure molding machine mold is created based on the data obtained by the measurement. There is provided a method for producing a masking material, characterized in that the masking material is produced by using a laminated sheet composed of the front surface layer and the back surface layer by a die of a pressure forming machine.

〔作用〕
本発明のマスキング材にあっては、物品の表面の被マスキング個所に被着した時、軟質樹脂からなる裏面層が上記被マスキング個所に密接し、該被マスキング個所に表面処理が施されることを防止する。一方、本発明のマスキング材は、表面層が硬質樹脂からなる。
本発明のマスキング材は、被マスキング個所の形状に適合する形状に成形されているが、上記したように表面層が硬質樹脂からなるので、成形形状は安定している。
[Action]
In the masking material of the present invention, when the masking material is applied to the masked part on the surface of the article, the back layer made of a soft resin is in close contact with the masked part, and the masked part is subjected to surface treatment. To prevent. On the other hand, the surface layer of the masking material of the present invention is made of a hard resin.
The masking material of the present invention is molded into a shape that matches the shape of the portion to be masked. However, since the surface layer is made of a hard resin as described above, the molded shape is stable.

〔効果〕
したがって、本発明のマスキング材は、被マスキング個所を確実に被覆して該個所を表面処理から保護する。
〔effect〕
Therefore, the masking material of the present invention reliably covers the portion to be masked and protects the portion from surface treatment.

自動車リアウィンド上縁に取り付けるルーフスポイラーの分割斜視図。The division | segmentation perspective view of the roof spoiler attached to an automobile rear window upper edge. (a)は左側マスキング材を成形する金型の型面部分の説明図、(b)は右側マスキング材を成形するための金型の型面部分の説明図。(A) is explanatory drawing of the mold surface part of the metal mold | die which shape | molds the left side masking material, (b) is explanatory drawing of the mold surface part of the metal mold | die for shape | molding the right side masking material. 製造されたマスキング材の斜視図であり、(a)は左側部分、(b)は右側部分。It is a perspective view of the manufactured masking material, (a) is a left side part, (b) is a right side part. マスキング材の部分断面図。The fragmentary sectional view of a masking material. スポイラー本体を塗装する際の説明図。Explanatory drawing when painting the spoiler body. スポイラー本体と蓋体とを接合した状態を示す断面図。Sectional drawing which shows the state which joined the spoiler main body and the cover body. スポイラーをリアウィンドに装着した状態の斜視図。The perspective view of the state which installed the spoiler in the rear window.

本発明のマスキング材をルーフスポイラー用のマスキング材として具体化した一実施形態を、図面に基づき、以下に説明する。
図1に示すように、ルーフスポイラーは、スポイラー本体1に蓋体9を被せて接合することにより構成されている。
上記スポイラー本体1は、前縁の低段部2と、該低段部2から後斜め上方へ延設されて主体部を構成する高段部3とからなる。該高段部3の上面3Aには、上記蓋体9を溶着によって接合するための横リブ4Aおよび縦リブ4Bがそれぞれ複数個所定個所に形成されている。
更に上記高段部3の上面3Aには、孔部5、凹部6、凹溝7、あるいは補強リブ8等が所定個所に1個又は複数個形成されている。
上記スポイラー本体1は、ポリプロピレン、ABS樹脂、AES樹脂、ポリフェニレンオキサイド等の硬質熱可塑性樹脂を材料としている。
An embodiment in which the masking material of the present invention is embodied as a masking material for a roof spoiler will be described below with reference to the drawings.
As shown in FIG. 1, the roof spoiler is configured by covering a spoiler body 1 with a lid 9 and joining them.
The spoiler body 1 includes a low step portion 2 at the front edge and a high step portion 3 that extends from the low step portion 2 obliquely upward to the rear and constitutes a main portion. A plurality of lateral ribs 4A and longitudinal ribs 4B for joining the lid body 9 by welding are formed on the upper surface 3A of the high step portion 3 at predetermined positions.
Further, on the upper surface 3A of the high step portion 3, one or a plurality of holes 5, recesses 6, recess grooves 7, reinforcing ribs 8 and the like are formed at predetermined positions.
The spoiler body 1 is made of a hard thermoplastic resin such as polypropylene, ABS resin, AES resin, polyphenylene oxide or the like.

上記スポイラー本体1には、表面処理として塗装が施される。該塗装に際して、上記スポイラー本体1の高段部3の上面3Aは、上記蓋部9の内面との溶着面となるため、該高段部3の上面3Aを上記塗装の際の被マスキング個所(3A)とする。そして、上記被マスキング個所(3A)の形状を非接触三次元測定機によって測定する。
具体的には、上記被マスキング個所(3A)の複数個所に測定基準となるポイントを示すためのターゲットシールを貼り付け、該ターゲットシールが貼り付けられた複数個所を、デジタルカメラ等で複数の撮像位置から撮像し、得られた画像に基づいて各ターゲットシールの三次元座標を算出する。
次いで、上記被マスキング個所(3A)をプロジェクターで縞模様等の幾何学模様を投撮した状態、あるいは上記被マスキング個所(3A)の表面にスリット状の光を走査した状態で、上記複数のターゲットシールが張り付けられた被マスキング個所(3A)を撮像することによって得られた画像と、先に算出された各ターゲットシールの三次元座標とに基づいて、該被マスキング個所(3A)の三次元形状を作成する。
そして、上記被マスキング個所(3A)の三次元形状に基づいて、真空および/または圧空成形機の金型の型面形状を決定し、上記真空および/または圧空成形機の金型を作成する。
The spoiler body 1 is painted as a surface treatment. At the time of coating, the upper surface 3A of the high step portion 3 of the spoiler body 1 serves as a welding surface with the inner surface of the lid portion 9, and therefore the upper surface 3A of the high step portion 3 is masked at the time of coating ( 3A). Then, the shape of the masked portion (3A) is measured by a non-contact three-dimensional measuring machine.
Specifically, a target seal is attached to a plurality of locations to be masked (3A) to indicate points serving as a measurement reference, and a plurality of locations where the target seal is affixed are captured with a digital camera or the like. An image is taken from the position, and the three-dimensional coordinates of each target seal are calculated based on the obtained image.
Next, in the state where the masked part (3A) is projected with a geometric pattern such as a striped pattern by a projector, or the surface of the masked part (3A) is scanned with slit-like light, the plurality of targets Based on the image obtained by imaging the masked portion (3A) to which the seal is attached, and the three-dimensional coordinates of each target seal calculated in advance, the three-dimensional shape of the masked portion (3A) Create.
Then, based on the three-dimensional shape of the masked portion (3A), the mold surface shape of the vacuum and / or pressure forming machine is determined, and the mold of the vacuum and / or pressure forming machine is created.

上記のようにして作製した金型10,11の型面図を、図2(a),(b)に示す。
金型10,11の型面10A,11Aは、それぞれ前記非接触三次元測定機によって測定したスポイラー本体1の高段部3の上面3A(被マスキング面)で、左側形状を覆うべく該形状を成形可能な形状を有する左側上面成形部31Aと、右側形状を覆うべく該形状を成形可能な形状を有する右側上面成形部32Aとを有する。
上記左側上面成形凹部31Aを有する金型10を使用した真空成形によって、図3(a)に示すような、左側マスキング材12Aが成形される。また、上記右側上面成形部32Aを有する金型12を使用した真空成形によって、図3(b)に示すような、右側マスキング材12Bが成形される。
2A and 2B show mold surface diagrams of the molds 10 and 11 manufactured as described above.
The mold surfaces 10A and 11A of the molds 10 and 11 are respectively the upper surface 3A (masked surface) of the high step portion 3 of the spoiler body 1 measured by the non-contact three-dimensional measuring machine, and the shapes are formed so as to cover the left side shape. It has a left upper surface molding portion 31A having a shape that can be molded, and a right upper surface molding portion 32A having a shape that can be molded to cover the right shape.
The left masking material 12A as shown in FIG. 3A is formed by vacuum forming using the mold 10 having the left upper surface forming recess 31A. Further, the right masking material 12B as shown in FIG. 3B is formed by vacuum forming using the mold 12 having the right upper surface forming portion 32A.

上記マスキング材12A,12Bは、図4に示すような表面層121と裏面層122とからなる積層シート120を用いることで、二層構造を有する。
上記表面層121は、例えばポリプロピレン、ABS樹脂、AES樹脂、ポリフェニレンオキサイド(PPE)等の硬質な熱可塑性樹脂からなる。
上記表面層121の硬度は、ロックウェル硬度でR80以上であることが望ましく、R85〜R110であることがより望ましい。硬度がR80に満たない場合、マスキング材として繰り返し使用するのに適した剛性が得られないおそれがある。
The masking materials 12A and 12B have a two-layer structure by using a laminated sheet 120 composed of a front surface layer 121 and a back surface layer 122 as shown in FIG.
The surface layer 121 is made of a hard thermoplastic resin such as polypropylene, ABS resin, AES resin, polyphenylene oxide (PPE), or the like.
The surface layer 121 preferably has a Rockwell hardness of R80 or more, and more preferably R85 to R110. When the hardness is less than R80, there is a possibility that rigidity suitable for repeated use as a masking material cannot be obtained.

上記裏面層122は、例えばスチレン系エラストマー、オレフィン系エラストマー、ウレタン系エラストマー、エステル系エラストマー、ポリ塩化ビニル系エラストマー等の熱可塑性エラストマー、イソプレン系ゴム、ブタジエン系ゴム、ジエン系特殊ゴム、オレフィン系ゴム、エーテル系ゴム、ポリスルフィド系ゴム、ウレタン系ゴム、フッ素系ゴム、シリコンゴム等のゴムのような軟質な樹脂(ゴム)からなる。
望ましい軟質樹脂としてはスチレン系エラストマーがある。スチレン系エラストマーは加熱時に熱可塑性挙動を示し成形が容易であり、常温では加硫ゴムのような挙動を示す。スチレン系エラストマーの代表的なものは、例えばスチレン―ブタジエン―スチレンブロック共重合体(SBS)、スチレン―イソプレン―スチレンブロック共重合体(SIS)、スチレン―エチレン―ブチレン―スチレンブロック共重合体(SEBS)、スチレン―エチレン―エチレン―ブチレン―スチレンブロック共重合体(SEEBS)等である。
上記ゴムまたは熱可塑性エラストマーには硬さ調節のためにポリプロピレン樹脂、軟化剤等が混合されてもよい。
上記裏面層122の硬度は、JIS K6253に準じて測定された測定時間1秒のA硬さで50以下であることが望ましい。A硬さが50を超える裏面層122の場合は、被マスキング個所との良好な密着性が保障されない。
また上記裏面層の厚みは10μm以上とすることが望ましく、20μm以上とすることがより望ましく、40μm以上とすることがさらに望ましい。
上記裏面層122の具体例としては、例えばSEBS100質量部、軟化剤180質量部、ポリプロピレン樹脂20質量部からなる組成物を材料とする。該組成物のA硬さは33である。なお裏面層122の厚みは65μmである。
The back layer 122 is made of, for example, a thermoplastic elastomer such as styrene elastomer, olefin elastomer, urethane elastomer, ester elastomer, polyvinyl chloride elastomer, isoprene rubber, butadiene rubber, diene special rubber, olefin rubber. It is made of a soft resin (rubber) such as ether rubber, polysulfide rubber, urethane rubber, fluorine rubber, or silicone rubber.
A desirable soft resin is a styrene elastomer. Styrenic elastomers exhibit thermoplastic behavior when heated and are easy to mold, and behave like vulcanized rubber at room temperature. Typical examples of styrene elastomers include styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), and styrene-ethylene-butylene-styrene block copolymer (SEBS). ), Styrene-ethylene-ethylene-butylene-styrene block copolymer (SEEBS), and the like.
The rubber or thermoplastic elastomer may be mixed with a polypropylene resin, a softening agent or the like for adjusting the hardness.
The hardness of the back surface layer 122 is desirably 50 or less in terms of A hardness with a measurement time of 1 second measured according to JIS K6253. In the case of the back surface layer 122 having an A hardness exceeding 50, good adhesion to the masked portion is not ensured.
The thickness of the back layer is preferably 10 μm or more, more preferably 20 μm or more, and further preferably 40 μm or more.
As a specific example of the back layer 122, for example, a composition composed of 100 parts by mass of SEBS, 180 parts by mass of a softening agent, and 20 parts by mass of polypropylene resin is used as a material. The A hardness of the composition is 33. The back layer 122 has a thickness of 65 μm.

図5に示すように、上記スポイラー本体1は、被マスキング個所である高段部3の上面3Aに上記左側マスキング材12Aと上記右側マスキング材12Bとが被着された状態で塗装が施される。
該スポイラー本体1を塗装する際には、上記左側マスキング材12Aおよび上記右側マスキング材12Bによって接合面である高段部3の上面3Aが塗装から保護されているから、この部分には塗料は付着しない。
したがって、図6に示すように、該スポイラー本体1に蓋体9を重合し、例えば、高周波加熱や超音波溶着や接着剤接着等といった種々の接合方法で、該スポイラー本体1と該蓋体9とを、該スポイラー本体1の高段部3の上面のリブ4A,4Bを介して接合する場合、塗料の付着による接合不良の発生が確実に防止される。
このようにして図7に示すような、自動車13のリアウィンド14の上縁に取付けられるルーフスポイラー15が製造される。
As shown in FIG. 5, the spoiler body 1 is coated in a state in which the left masking material 12A and the right masking material 12B are attached to the upper surface 3A of the high step portion 3 which is a masked portion. .
When the spoiler body 1 is painted, the upper surface 3A of the high step portion 3 that is the joining surface is protected from painting by the left masking material 12A and the right masking material 12B. do not do.
Therefore, as shown in FIG. 6, a cover 9 is polymerized on the spoiler body 1, and the spoiler body 1 and the cover 9 are bonded by various joining methods such as high-frequency heating, ultrasonic welding, adhesive bonding, and the like. Are bonded via the ribs 4A and 4B on the upper surface of the high step portion 3 of the spoiler body 1, the occurrence of bonding failure due to adhesion of paint is reliably prevented.
Thus, the roof spoiler 15 attached to the upper edge of the rear window 14 of the automobile 13 as shown in FIG. 7 is manufactured.

本発明は、上記ルーフスポイラー15に使用するマスキング材以外に、自動車のバンパーの空気取入れ口を保護するマスキング材、自動車ドアピラーを保護するマスキング材等、種々な個所を表面処理から保護するためのマスキング材に適用される。また本発明のマスキング材は、真空成形以外に圧空成形、真空圧空成形、プレス成形等によっても製造される。   In the present invention, in addition to the masking material used for the roof spoiler 15, the masking material for protecting various parts such as the masking material for protecting the air intake port of the bumper of the automobile and the masking material for protecting the automobile door pillar from the surface treatment. Applied to the material. Further, the masking material of the present invention is produced not only by vacuum forming but also by pressure forming, vacuum / pressure forming, press forming or the like.

本発明は、硬質樹脂製の表面層が安定した成形形状を確保するとともに、軟質樹脂製の裏面層で被マスキング個所に対する密着性を好適なものとすることにより、被マスキング個所を確実に表面処理から保護することが出来るマスキング材を提供することが出来、また被マスキング面の形状を非接触三次元測定機によって測定し、該測定によって得られたデータにもとづいて真空および/または圧空成形機の金型を作成するから、金型の作成が非常に簡単になり、かつ金型形状も精度の高いものとなるから、産業上利用可能である。   In the present invention, the hard resin surface layer ensures a stable molded shape, and the soft resin back surface layer has favorable adhesion to the masked portion, thereby reliably surface-treating the masked portion. A masking material that can be protected from the above is provided, and the shape of the masked surface is measured by a non-contact three-dimensional measuring machine, and based on the data obtained by the measurement, a vacuum and / or a pneumatic molding machine is provided. Since the mold is created, it is very easy to create the mold and the mold shape is highly accurate, so that it can be used industrially.

1 スポイラー本体
3A 高段部上面(被マスキング箇所)
10,11 金型
10A,11A 金型型面
12A 左側マスキング材
12B 右側マスキング材
121 表面層
122 裏面層
13 自動車
14 リアウィンド
15 スポイラー
1 Spoiler body 3A Upper surface of the high section (masked area)
DESCRIPTION OF SYMBOLS 10,11 Mold 10A, 11A Mold surface 12A Left masking material 12B Right masking material 121 Surface layer 122 Back surface layer 13 Car 14 Rear window 15 Spoiler

Claims (5)

物品の表面の表面処理が施されてはいけない個所である被マスキング個所を該表面処理から保護するために使用されるマスキング材であって、
硬質樹脂からなる表面層と、軟質樹脂からなり上記被マスキング個所に接する裏面層とからなる積層シートを材料とする
ことを特徴とするマスキング材。
A masking material used for protecting a portion to be masked, which is a portion that should not be subjected to a surface treatment on the surface of the article, from the surface treatment,
A masking material comprising a laminated sheet comprising a surface layer made of a hard resin and a back layer made of a soft resin and in contact with the masked portion.
上記表面層は硬度がロックウェル硬度でR80以上であり、上記裏面層はJIS K6253に準じて測定された測定時間1秒のA硬さが50以下である請求項1に記載のマスキング材。   2. The masking material according to claim 1, wherein the surface layer has a Rockwell hardness of R80 or more, and the back layer has an A hardness of 50 or less measured for 1 second measured according to JIS K6253. 上記表面層はポリプロピレン、ABS樹脂、AES樹脂またはポリフェニレンオキサイドを主体とした硬質樹脂からなり、上記表面層はスチレン系エラストマーからなる請求項1または請求項2に記載のマスキング材。   3. The masking material according to claim 1, wherein the surface layer is made of a hard resin mainly composed of polypropylene, ABS resin, AES resin, or polyphenylene oxide, and the surface layer is made of a styrene-based elastomer. 上記裏面層の厚みは10μm以上に設定される請求項1から請求項3のいずれか一項に記載のマスキング材。   The masking material according to any one of claims 1 to 3, wherein a thickness of the back layer is set to 10 µm or more. 物品の被マスキング個所の形状を非接触三次元測定機によって測定し、該測定によって得られたデータにもとづいて真空および/または圧空成形機の金型を作成し、該真空および/または圧空成形機の金型によって上記表面層と上記裏面層とからなる積層シートを使用して請求項1から請求項4に記載のマスキング材を製造することを特徴とするマスキング材の製造方法。   The shape of the masked part of the article is measured by a non-contact three-dimensional measuring machine, a mold for a vacuum and / or pressure forming machine is created based on the data obtained by the measurement, and the vacuum and / or pressure forming machine is created. The manufacturing method of the masking material characterized by manufacturing the masking material of Claims 1-4 using the laminated sheet which consists of the said surface layer and the said back surface layer with the metal mold | die of this.
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