JP4700577B2 - Screen printing method for flexible printed wiring board - Google Patents

Screen printing method for flexible printed wiring board Download PDF

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JP4700577B2
JP4700577B2 JP2006220531A JP2006220531A JP4700577B2 JP 4700577 B2 JP4700577 B2 JP 4700577B2 JP 2006220531 A JP2006220531 A JP 2006220531A JP 2006220531 A JP2006220531 A JP 2006220531A JP 4700577 B2 JP4700577 B2 JP 4700577B2
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printing
reinforcing member
screen printing
fpc
screen
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JP2008047651A (en
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倫宏 海野
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Nippon Mektron KK
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本発明はフレキシブルプリント配線板のスクリーン印刷方法に関するものであり、特に、部品実装箇所の裏面に補強部材が貼り合わされたフレキシブルプリント配線板に、部品実装のためのペースト状はんだをスクリーン印刷する際に、段差による印刷かすれを抑制するスクリーン印刷方法に関するものである。   The present invention relates to a screen printing method for a flexible printed wiring board, and in particular, when screen-printing paste-like solder for component mounting on a flexible printed wiring board in which a reinforcing member is bonded to the back surface of a component mounting location. The present invention relates to a screen printing method for suppressing print fading due to steps.

フレキシブルプリント配線板（以下ＦＰＣという）は、部品実装に対する機械的強度が小さいので、部品実装箇所の裏面に補強部材を貼り合わせてから部品を実装している。図５は従来の一般的なＦＰＣ５１を示し、二点鎖線で示すＦＰＣの製品外形５２の外側不要部分は後工程で打ち抜き除去する。   Since a flexible printed wiring board (hereinafter referred to as FPC) has low mechanical strength with respect to component mounting, components are mounted after a reinforcing member is bonded to the back surface of the component mounting portion. FIG. 5 shows a conventional general FPC 51, and an unnecessary portion outside the product outer shape 52 of the FPC indicated by a two-dot chain line is punched and removed in a subsequent process.

網掛けで示す部品実装箇所５３には、後述するように、矢印方向へ印刷スキージを移動させて、ＦＰＣ５１の表面にペースト状はんだをスクリーン印刷する。そして、部品実装箇所５３の裏面には補強部材５４が貼り合わされている。該補強部材５４は、貼り合わせの容易さなどの理由で、印刷スキージの移動方向と直交する方向に、製品外形５２よりも大きく形成され、後工程で製品外形５２に沿って打ち抜かれる。   As will be described later, a paste squeegee is screen printed on the surface of the FPC 51 by moving a printing squeegee in the direction of the arrow, as will be described later. A reinforcing member 54 is bonded to the back surface of the component mounting location 53. The reinforcing member 54 is formed larger than the product outer shape 52 in a direction orthogonal to the moving direction of the printing squeegee for reasons such as easy bonding, and is punched along the product outer shape 52 in a later process.

図６は従来のスクリーン印刷過程を示し、同図（ａ）に示すように、前記補強部材５４が貼り合わされたＦＰＣ５１を印刷テーブル５５に位置決めして載置すると、補強部材５４の厚み分だけＦＰＣ５１に段差が生じる。   FIG. 6 shows a conventional screen printing process. As shown in FIG. 6A, when the FPC 51 to which the reinforcing member 54 is bonded is positioned and placed on the printing table 55, the FPC 51 corresponding to the thickness of the reinforcing member 54 is shown. There is a step in

同図（ｂ）に示すように、矢印方向へ印刷スキージ５６を移動させながら、スクリーン印刷版５７をＦＰＣ５１の表面に押し付けて、ペースト状はんだをスクリーン印刷するのであるが、同図（ｃ）に示すように、補強部材５４が貼り合わされた段差部分でスクリーン印刷版５７に波打ち５８が生じる。同図（ｄ）に示すように、印刷スキージ５６が段差部分を越えると、スクリーン印刷版５７の張力によって波打ちが解消される。   As shown in FIG. 6B, the screen printing plate 57 is pressed against the surface of the FPC 51 while moving the printing squeegee 56 in the direction of the arrow, and the paste solder is screen printed. As shown, a wave 58 is generated in the screen printing plate 57 at the stepped portion where the reinforcing member 54 is bonded. As shown in FIG. 4D, when the printing squeegee 56 exceeds the stepped portion, the undulation is eliminated by the tension of the screen printing plate 57.

このように、印刷スキージ５６が段差部分を通過するときに波打ち５８が発生し、このとき、スクリーン印刷版５７がＦＰＣ５１の表面から瞬間的に離反するため、スクリーン印刷版５７が離反している間は、ＦＰＣ５１の表面にペースト状はんだが載らなくなって、印刷かすれが発生する。ペースト状はんだの印刷かすれが発生すると、部品実装に必要なはんだ量がＦＰＣ５１の端子上に確保できず、部品実装の信頼性が低下するという不具合がある。   In this way, when the printing squeegee 56 passes through the stepped portion, the undulation 58 is generated, and at this time, the screen printing plate 57 is momentarily separated from the surface of the FPC 51, so that the screen printing plate 57 is separated. Causes paste on the surface of the FPC 51, and print fading occurs. When the printing solder of the paste-like solder occurs, there is a problem that the amount of solder necessary for component mounting cannot be secured on the terminals of the FPC 51 and the reliability of component mounting is lowered.

段差のある配線板にオーバーコート剤などをスクリーン印刷する場合、予め印刷テーブルに段差を形成しておき、印刷面を平坦化する方法が知られている（例えば、特許文献１参照）。また、製品の凹凸に応じてスクリーン印刷版自体に段差を設けて印刷する方法も知られている（例えば、特許文献２参照）。さらに、スクリーン印刷版の張力を弱めて、段差に追随させる印刷方法も知られている（例えば、特許文献３参照）。
特開平５−２５９２２５号公報 特開２００３−８０８５９号公報 特開２００２−１５４２８１号公報 In the case where an overcoat agent or the like is screen-printed on a wiring board having a level difference, a method is known in which a level difference is formed on a printing table in advance and the printing surface is flattened (see, for example, Patent Document 1). Also known is a method of printing by providing a step on the screen printing plate itself according to the unevenness of the product (see, for example, Patent Document 2). Furthermore, a printing method is also known in which the tension of the screen printing plate is weakened to follow a step (see, for example, Patent Document 3).
JP-A-5-259225 JP 2003-80859 A JP 2002-154281 A

特許文献１記載の発明は、製品の種類毎に専用の印刷テーブルが必要となり、多品種少量生産には不向きである。   The invention described in Patent Document 1 requires a dedicated printing table for each type of product, and is not suitable for high-mix low-volume production.

特許文献２記載の発明は、スクリーン印刷版自体に段差を設けることにより、スクリーン印刷版の機械的強度が低下する。   In the invention described in Patent Document 2, the mechanical strength of the screen printing plate is lowered by providing a step in the screen printing plate itself.

特許文献３記載の発明は、スクリーン印刷版の張力を弱めると、印刷時にスクリーン印刷版自体に伸びが生じて位置精度が低下する。近年は部品実装箇所が狭いピッチになっているので、印刷位置がずれることは好ましくない。   In the invention described in Patent Document 3, when the tension of the screen printing plate is weakened, the screen printing plate itself is stretched during printing, and the positional accuracy is lowered. In recent years, the component mounting locations have a narrow pitch, so it is not preferable that the printing position be shifted.

そこで、本発明は部品実装箇所の裏面に補強部材が貼り合わされたＦＰＣに、部品実装のためのペースト状はんだをスクリーン印刷する際に、段差による印刷かすれを抑制する印刷方法を提供することを目的とする。   Accordingly, the present invention has an object to provide a printing method for suppressing print fading due to a step when screen-printing paste-like solder for component mounting on an FPC in which a reinforcing member is bonded to the back surface of a component mounting location. And

本発明は上記目的を達成するために提案されたものであり、請求項１記載の発明は、部品実装箇所の裏面に補強部材が貼り合わされたＦＰＣの表面にペースト状はんだをスクリーン印刷する方法において、前記補強部材は、印刷スキージの移動方向と直交する方向にＦＰＣの製品外形よりも大きく形成され、かつ、製品外形の外側部分に印刷スキージの移動方向と反対側に張り出し部を形成し、スクリーン印刷時に前記印刷スキージが前記張り出し部に乗り上げて移動するようにしたことを特徴とするＦＰＣのスクリーン印刷方法を提供する。   The present invention has been proposed to achieve the above object, and the invention according to claim 1 is a method of screen-printing solder paste on the surface of an FPC in which a reinforcing member is bonded to the back surface of a component mounting location. The reinforcing member is formed larger than the product outer shape of the FPC in a direction orthogonal to the moving direction of the printing squeegee, and an overhang is formed on the outer side of the product outer shape on the opposite side of the moving direction of the printing squeegee. An FPC screen printing method is provided, wherein the printing squeegee rides on the overhanging portion and moves during printing.

この構成によれば、補強部材が製品外形の外側部分に印刷スキージの移動方向と反対側に張り出し部を形成しているので、スクリーン印刷時に前記印刷スキージが移動すると、補強部材の張り出し部が貼り合わされた段差部分で、スクリーン印刷版に波打ちが生じる。この波うちによってスクリーン印刷版がＦＰＣの表面から瞬間的に離反しても、部品実装箇所の印刷必要領域の手前であるので、ペースト状はんだを印刷しない領域であり、かすれを懸念することは不要である。   According to this configuration, since the reinforcing member forms an overhanging portion on the outer side of the outer shape of the product on the side opposite to the moving direction of the printing squeegee, when the printing squeegee moves during screen printing, the overhanging portion of the reinforcing member sticks. At the combined stepped portion, the screen printing plate is wavy. Even if the screen printing plate is momentarily separated from the surface of the FPC by this wave, it is in front of the area where printing is required at the component mounting location, so it is an area where paste solder is not printed, and there is no need to worry about blurring. It is.

印刷スキージが張り出し部の段差部分を越えて補強部材まで移動すると、スクリーン印刷版の張力によって波打ちが解消され、部品実装箇所の印刷必要領域ではペースト状はんだの印刷かすれが生じない。そして、前記補強部材の張り出し部は、製品外形の外側不要部分として後工程で打ち抜き除去される。   When the printing squeegee moves beyond the stepped portion of the overhanging portion to the reinforcing member, the undulation is eliminated by the tension of the screen printing plate, and the printing solder paste does not blur in the printing required area of the component mounting location. And the overhang | projection part of the said reinforcement member is stamped and removed by a post process as an outer side unnecessary part of a product external shape.

請求項２記載の発明は、上記印刷スキージの移動方向と直交する方向に複数の製品を並設し、隣接する製品に跨って上記補強部材を形成するとともに、隣接する製品間に上記張り出し部を共用して形成したことを特徴とする請求項１記載のフレキシブルプリント配線板のスクリーン印刷方法を提供する。   In the invention according to claim 2, a plurality of products are arranged side by side in a direction orthogonal to the moving direction of the printing squeegee, the reinforcing member is formed across adjacent products, and the protruding portion is provided between adjacent products. The screen printing method for a flexible printed wiring board according to claim 1, wherein the screen printing method is used in common.

この構成によれば、印刷スキージの移動方向と直交する方向に幅広のＦＰＣに複数の製品を並設する場合、隣接する製品間で上記張り出し部を共用することにより、補強部材の製作コストダウンが図られる。   According to this configuration, when a plurality of products are arranged side by side in a wide FPC in a direction perpendicular to the moving direction of the printing squeegee, the production cost of the reinforcing member can be reduced by sharing the protruding portion between adjacent products. Figured.

本発明は、補強部材が製品外形の外側部分に印刷スキージの移動方向と反対側に張り出し部を形成しているので、印刷スキージが張り出し部の段差部分を通過したときに、スクリーン印刷版に波うちが生じるが、この張り出し部は部品実装箇所の印刷必要領域の手前であるので、ペースト状はんだを印刷しない領域であり、かすれを懸念することは不要である。そして、印刷スキージが段差部分を越えて部品実装箇所まで移動すると、スクリーン印刷版の波打ちが解消されるため、部品実装箇所の印刷必要領域ではペースト状はんだの印刷かすれが生じない。また、前記補強部材の張り出し部は、製品外形の外側不要部分として後工程で打ち抜き除去されるので、製品になんら影響を及ぼすことはない。   In the present invention, since the reinforcing member forms an overhanging portion on the outer side of the outer shape of the product on the side opposite to the moving direction of the printing squeegee, when the printing squeegee passes the stepped portion of the overhanging portion, the screen printing plate has a wave. However, since this overhanging portion is in front of the printing required area of the component mounting portion, it is an area where the paste solder is not printed, and it is not necessary to worry about fading. Then, when the printing squeegee moves beyond the stepped portion to the component mounting location, the undulation of the screen printing plate is eliminated, so that the paste-like solder does not blur in the printing required region of the component mounting location. Further, the projecting portion of the reinforcing member is punched and removed in a later process as an unnecessary portion outside the outer shape of the product, so that the product is not affected at all.

かくして、ＦＰＣの部品実装箇所にペースト状はんだを、均一かつ確実にスクリーン印刷することができる。   Thus, the paste-like solder can be uniformly and reliably screen-printed on the component mounting portion of the FPC.

以下、本発明に係るフレキシブルプリント配線板（ＦＰＣ）のスクリーン印刷方法について、好適な実施例をあげて説明する。部品実装箇所の裏面に補強部材が貼り合わされたＦＰＣに、部品実装のためのペースト状はんだをスクリーン印刷する際に、段差による印刷かすれを抑制するという目的を達成するために、本発明は、前記補強部材が印刷スキージの移動方向と直交する方向にＦＰＣの製品外形よりも大きく形成され、かつ、製品外形の外側部分に印刷スキージの移動方向と反対側に張り出し部を形成し、スクリーン印刷時に前記印刷スキージが前記張り出し部に乗り上げて移動するようにしたことにより実現した。   Hereinafter, a screen printing method for a flexible printed wiring board (FPC) according to the present invention will be described with reference to preferred embodiments. In order to achieve the object of suppressing print fading due to steps when screen-printing paste-like solder for component mounting on an FPC in which a reinforcing member is bonded to the back surface of a component mounting location, The reinforcing member is formed larger than the product outer shape of the FPC in a direction orthogonal to the moving direction of the printing squeegee, and an overhang is formed on the outer side of the outer shape of the product on the side opposite to the moving direction of the printing squeegee. This was realized by moving the printing squeegee on the overhanging portion.

図１は本発明に係る実施例１のフレキシブルプリント配線板（ＦＰＣ）１を示し、二点鎖線で示すＦＰＣの製品外形２の外側不要部分は後工程で打ち抜き除去する。網掛けで示す部品実装箇所３には、後述するように、矢印方向へ印刷スキージを移動させて、ＦＰＣ１の表面にペースト状はんだをスクリーン印刷する。そして、部品実装箇所３の裏面には補強部材４が貼り合わされている。該補強部材４は、貼り合わせの容易さなどの理由で、印刷スキージの移動方向と直交する方向に、製品外形２よりも大きく形成され、かつ、製品外形２の外側部分に、印刷スキージの移動方向と反対側に張り出し部４ａが形成されている。   FIG. 1 shows a flexible printed wiring board (FPC) 1 according to a first embodiment of the present invention. Unnecessary portions outside an FPC product outer shape 2 indicated by a two-dot chain line are punched and removed in a later step. As will be described later, a paste squeegee is screen-printed on the surface of the FPC 1 by moving a printing squeegee in the direction of the arrow, as will be described later. The reinforcing member 4 is bonded to the back surface of the component mounting location 3. The reinforcing member 4 is formed larger than the product outer shape 2 in a direction orthogonal to the moving direction of the printing squeegee for reasons such as ease of bonding, and the printing squeegee moves on the outer portion of the product outer shape 2. An overhanging portion 4a is formed on the opposite side to the direction.

図２は本発明に係るＦＰＣ１のスクリーン印刷過程を示し、同図（ａ）に示すように、前記補強部材４が貼り合わされたＦＰＣ１を、印刷テーブル５に位置決めして載置すると、補強部材４および張り出し部４ａの厚み分だけ、ＦＰＣ１に段差が生じる。   FIG. 2 shows a screen printing process of the FPC 1 according to the present invention. As shown in FIG. 2A, when the FPC 1 to which the reinforcing member 4 is bonded is positioned and placed on the printing table 5, the reinforcing member 4 is placed. Further, a step is generated in the FPC 1 by the thickness of the overhang portion 4a.

同図（ｂ）に示すように、矢印方向へ印刷スキージ６を移動させながら、スクリーン印刷版７をＦＰＣ１の表面に押し付けて、ペースト状はんだをスクリーン印刷するのであるが、同図（ｃ）に示すように、補強部材４の張り出し部４ａが貼り合わされた段差部分で、スクリーン印刷版７に波打ち８が生じる。   As shown in FIG. 4B, the screen printing plate 7 is pressed against the surface of the FPC 1 while moving the printing squeegee 6 in the direction of the arrow, and the paste solder is screen printed. As shown, a wave 8 is generated on the screen printing plate 7 at the step portion where the projecting portion 4 a of the reinforcing member 4 is bonded.

この波うち８によって、スクリーン印刷版７がＦＰＣ１の表面から瞬間的に離反しても、この張り出し部４ａは部品実装箇所３の印刷必要領域の手前であるので、ペースト状はんだを印刷しない領域であり、かすれを懸念することは不要である。   Even if the screen printing plate 7 is momentarily separated from the surface of the FPC 1 due to the wave 8, the overhanging portion 4 a is in front of the printing required area of the component mounting portion 3, so that the paste-like solder is not printed. There is no need to worry about fading.

同図（ｄ）に示すように、印刷スキージ６が張り出し部４ａの段差部分を越えて補強部材４まで移動すると、スクリーン印刷版７の張力によって波打ちが解消されるため、部品実装箇所３の印刷必要領域では、ペースト状はんだの印刷かすれが生じない。また、前記補強部材の張り出し部４ａは、製品外形２の外側不要部分として後工程で打ち抜き除去されるので、製品になんら影響を及ぼすことはない。   As shown in FIG. 6D, when the printing squeegee 6 moves to the reinforcing member 4 beyond the stepped portion of the overhanging portion 4a, the waviness is eliminated by the tension of the screen printing plate 7. In the necessary area, no fading of the paste-like solder occurs. In addition, the overhanging portion 4a of the reinforcing member is punched and removed in a later process as an unnecessary portion outside the product outer shape 2, and thus has no influence on the product.

かくして、ＦＰＣ１の部品実装箇所３にペースト状はんだを、均一かつ確実にスクリーン印刷することができる。   Thus, paste solder can be uniformly and reliably screen-printed on the component mounting portion 3 of the FPC 1.

図３は前記補強部材の張り出し部４ａの形状寸法の一例を示し、該張り出し部４ａの長さは１０ｍｍ以上が望ましい。該張り出し部４ａがこれよりも短いと、スクリーン印刷版７の張力によって波打ちが解消される前に、印刷スキージ６が補強部材４の部品実装箇所３まで移動してしまうおそれがあり、然るときは、部品実装箇所３にペースト状はんだの印刷かすれが生じることになる。   FIG. 3 shows an example of the shape and size of the overhanging portion 4a of the reinforcing member, and the length of the overhanging portion 4a is preferably 10 mm or more. If the overhanging portion 4a is shorter than this, the printing squeegee 6 may move to the component mounting location 3 of the reinforcing member 4 before the waviness is eliminated by the tension of the screen printing plate 7, and accordingly Will cause faint printing of the paste-like solder at the component mounting location 3.

また、張り出し部４ａの幅は２ｍｍ以上が望ましい。該張り出し部４ａの幅がこれよりも狭いと、印刷スキージ６先端の変形で張り出し部４ａの段差に印刷スキージ６が追随し、スクリーン印刷版７の波打ちが部品実装箇所３に達してしまうおそれがある。   The width of the overhanging portion 4a is preferably 2 mm or more. If the width of the overhanging portion 4a is narrower than this, the printing squeegee 6 may follow the step of the overhanging portion 4a due to the deformation of the tip of the printing squeegee 6, and the undulation of the screen printing plate 7 may reach the component mounting location 3. is there.

このように、前記前記補強部材の張り出し部４ａの長さを１０ｍｍ以上、幅を２ｍｍ以上確保することができれば、張り出し部４ａの形状は図示した長方形に限らず他の形状でもよい。なお、補強部材４の厚みは、概ね０．２〜１．０ｍｍである。   Thus, as long as the length of the overhanging portion 4a of the reinforcing member is 10 mm or more and the width is 2 mm or more, the shape of the overhanging portion 4a is not limited to the illustrated rectangle but may be other shapes. In addition, the thickness of the reinforcing member 4 is approximately 0.2 to 1.0 mm.

図４は本発明の実施例２を示し、矢印で示す印刷スキージの移動方向と直交する方向に幅広であるＦＰＣ１１に、複数の製品１２を並設する場合、隣接する製品１２の部品実装箇所１３に跨って補強部材１４を形成する。実施例２では、それぞれの補強部材１４毎に張り出し部を別個に設けずに、隣接する製品１２，１２の間に張り出し部１４ａを共用して形成する。これにより、補強部材１４および張り出し部１４ａの構成が簡素化されてコストダウンに寄与できる。   FIG. 4 shows a second embodiment of the present invention. When a plurality of products 12 are arranged side by side on an FPC 11 that is wide in a direction orthogonal to the moving direction of a printing squeegee indicated by an arrow, a component mounting location 13 of adjacent products 12 is shown. The reinforcing member 14 is formed across the two. In the second embodiment, the overhanging portion 14 a is shared between the adjacent products 12 and 12 without separately providing the overhanging portion for each reinforcing member 14. Thereby, the structure of the reinforcement member 14 and the overhang | projection part 14a is simplified, and it can contribute to a cost reduction.

図示は省略するが、並設された複数の製品１２に跨って幅広の印刷スキージを矢印で示す方向に移動させながら、スクリーン印刷版をＦＰＣ１１の表面に押し付けて、ペースト状はんだをスクリーン印刷するのであるが、実施例１と同様に、補強部材１４の張り出し部１４ａが貼り合わされた段差部分で、スクリーン印刷版に波打ち８が生じるが、部品実装箇所１３の印刷必要領域の手前であるので、ペースト状はんだを印刷しない領域であり、かすれを懸念することは不要である。   Although illustration is omitted, since the screen printing plate is pressed against the surface of the FPC 11 while moving the wide printing squeegee across the plural products 12 arranged in parallel in the direction indicated by the arrow, the paste solder is screen printed. However, as in the first embodiment, the screen printing plate has undulations 8 at the stepped portion where the projecting portion 14a of the reinforcing member 14 is bonded. It is an area where no solder is printed, and there is no need to worry about fading.

そして、印刷スキージが張り出し部１４ａの段差部分を越えて補強部材１４まで移動すると、スクリーン印刷版の張力によって波打ちが解消されるため、部品実装箇所１３の印刷必要領域では、ペースト状はんだの印刷かすれが生じない。また、前記補強部材の張り出し部１４ａは、製品１２の外側不要部分として後工程で打ち抜き除去されるので、製品になんら影響を及ぼすことはない。   When the printing squeegee moves beyond the stepped portion of the overhanging portion 14 a to the reinforcing member 14, the undulation is eliminated by the tension of the screen printing plate. Does not occur. Further, the overhanging portion 14a of the reinforcing member is punched and removed in a later process as an unnecessary portion outside the product 12, so that the product is not affected at all.

かくして、ＦＰＣ１１の部品実装箇所１３にペースト状はんだを、均一かつ確実にスクリーン印刷することができる。   Thus, the paste-like solder can be uniformly and surely screen-printed on the component mounting portion 13 of the FPC 11.

なお、本発明は、本発明の精神を逸脱しない限り種々の改変を為すことができ、そして、本発明が該改変されたものに及ぶことは当然である。   It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

本発明に係る実施例１のＦＰＣを示す説明図。Explanatory drawing which shows FPC of Example 1 which concerns on this invention. 本発明に係るＦＰＣのスクリーン印刷過程を示す説明図。Explanatory drawing which shows the screen printing process of FPC which concerns on this invention. 本発明に係るＦＰＣの補強部材の形状寸法の一例を示す説明図。Explanatory drawing which shows an example of the shape dimension of the reinforcement member of FPC which concerns on this invention. 本発明に係る実施例２のＦＰＣを示す説明図。Explanatory drawing which shows FPC of Example 2 which concerns on this invention. 従来のＦＰＣを示す説明図。Explanatory drawing which shows conventional FPC. 従来のＦＰＣのスクリーン印刷過程を示す説明図。Explanatory drawing which shows the screen printing process of the conventional FPC.

符号の説明Explanation of symbols

１，１１ フレキシブルプリント配線板（ＦＰＣ）
２，１２ 製品外形（製品）
３，１３ 部品実装箇所
４，１４ 補強部材
４ａ，１４ａ 張り出し部
５ 印刷テーブル
６ 印刷スキージ
７ スクリーン印刷版
８ 波打ち 1,11 Flexible Printed Circuit Board (FPC)
2,12 Product outline (product)
3,13 Component mounting location 4,14 Reinforcing member 4a, 14a Overhang portion 5 Printing table 6 Printing squeegee 7 Screen printing plate 8 Wave

Claims (2)

部品実装箇所の裏面に補強部材が貼り合わされたフレキシブルプリント配線板の表面にペースト状はんだをスクリーン印刷する方法において、
前記補強部材は、印刷スキージの移動方向と直交する方向にフレキシブルプリント配線板の製品外形よりも大きく形成され、かつ、製品外形の外側部分に印刷スキージの移動方向と反対側に張り出し部を形成し、スクリーン印刷時に前記印刷スキージが前記張り出し部に乗り上げて移動するようにしたことを特徴とするフレキシブルプリント配線板のスクリーン印刷方法。 In the method of screen-printing paste solder on the surface of the flexible printed wiring board in which the reinforcing member is bonded to the back surface of the component mounting location,
The reinforcing member is formed to be larger than the product outline of the flexible printed wiring board in a direction perpendicular to the moving direction of the printing squeegee, and a protruding portion is formed on the outer side of the product outline on the side opposite to the moving direction of the printing squeegee. A screen printing method for a flexible printed wiring board, wherein the printing squeegee rides on the protruding portion and moves during screen printing. 上記印刷スキージの移動方向と直交する方向に複数の製品を並設し、隣接する製品に跨って上記補強部材を形成するとともに、隣接する製品間に上記張り出し部を共用して形成したことを特徴とする請求項１記載のフレキシブルプリント配線板のスクリーン印刷方法。   A plurality of products are juxtaposed in a direction perpendicular to the moving direction of the printing squeegee, the reinforcing member is formed across adjacent products, and the overhanging portion is shared between adjacent products. A screen printing method for a flexible printed wiring board according to claim 1.
JP2006220531A 2006-08-11 2006-08-11 Screen printing method for flexible printed wiring board Expired - Fee Related JP4700577B2 (en)

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JP2006220531A JP4700577B2 (en) 2006-08-11 2006-08-11 Screen printing method for flexible printed wiring board
TW96117674A TW200809396A (en) 2006-08-11 2007-05-18 Screen printing method for flexible printed circuit board
CN2007101094580A CN101123851B (en) 2006-08-11 2007-06-21 Silk-screen printing method for flexible printing wiring plate

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JP2006130689A (en) * 2004-11-02 2006-05-25 Alpine Electronics Inc Metal mask and screen printing equipment
JP2006210609A (en) * 2005-01-27 2006-08-10 Mitsubishi Plastics Ind Ltd Tool for mounting printed-wiring board

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JPS61249790A (en) * 1985-04-30 1986-11-06 Matsushima Kogyo Co Ltd Metal mask
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CN1805661A (en) * 2005-01-13 2006-07-19 华通电脑股份有限公司 Method of forming raised weld bulges on circuit board

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JP2006130689A (en) * 2004-11-02 2006-05-25 Alpine Electronics Inc Metal mask and screen printing equipment
JP2006210609A (en) * 2005-01-27 2006-08-10 Mitsubishi Plastics Ind Ltd Tool for mounting printed-wiring board

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