JP2005313107A - Production method of printed resin sheet product - Google Patents

Production method of printed resin sheet product Download PDF

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JP2005313107A
JP2005313107A JP2004135619A JP2004135619A JP2005313107A JP 2005313107 A JP2005313107 A JP 2005313107A JP 2004135619 A JP2004135619 A JP 2004135619A JP 2004135619 A JP2004135619 A JP 2004135619A JP 2005313107 A JP2005313107 A JP 2005313107A
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resin sheet
printed
printing
layer
sheet product
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Tetsuto Miyanishi
哲人 宮西
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Marelli Corp
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Calsonic Kansei Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a production method of a printed resin sheet product having a printed layer which is not affected by a forming strain of the resin sheet. <P>SOLUTION: Since a reception layer 7 is formed in a resin sheet 2 and at the same time a projected part 3 of the resin sheet 2 is formed, and then non-contact type printing is carried out to the projected part 3 by an ink-jet method, printed layers 5a, 5b are not affected with the forming strain of the resin sheet 2 and the yield is improved. Further, since the projected part 3 of the resin sheet 2 is formed by vacuum molding or vacuum pneumatic molding, cracking of the reception layer 7 can be suppressed at the time of forming the projected part 3 of the resin sheet 2. Further, addition of 50% by weight of a thermoplastic resin to the reception layer 7 also contributes to suppression of cracking. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、印刷樹脂シート製品の製造方法関するものである。   The present invention relates to a method for producing a printed resin sheet product.

自動車の計器パネルの表示板など、樹脂シートの表面に文字、記号、目盛などの印刷層が形成された印刷樹脂シート製品がある。また、このような印刷樹脂シート製品は、印刷層を形成した部分の視覚性を高めるために、印刷層を形成した部分だけを凸部又は凹部にしている。   There is a printed resin sheet product in which printed layers such as letters, symbols, and scales are formed on the surface of a resin sheet such as a display panel of an automobile instrument panel. In addition, in such a printed resin sheet product, only the portion where the printed layer is formed is formed as a convex portion or a concave portion in order to improve the visibility of the portion where the printed layer is formed.

印刷層部分を凹部又は凸部にした印刷樹脂シート製品の製造方法としては、まず平板状の樹脂シートの表面に、スクリーン印刷等の接触式印刷方式により印刷層を形成する。次に、真空成形又は真空圧空成形により、樹脂シートの印刷層部分を凹部又は凸部にする(例えば、特許文献1。)。
特開2000−337931号公報
As a method for producing a printed resin sheet product in which the printed layer portion is a concave or convex portion, first, a printed layer is formed on the surface of a flat resin sheet by a contact printing method such as screen printing. Next, the printed layer portion of the resin sheet is formed into a concave portion or a convex portion by vacuum forming or vacuum / pressure forming (for example, Patent Document 1).
JP 2000-337931 A

しかしながら、このような従来の技術にあっては、印刷層を形成した後に樹脂シートの凹凸成形を行うため、樹脂シートに生じる成形歪みが印刷層に悪影響をに与え、印刷層と凹凸部との位置ズレや、印刷層自体の歪みを生じるおそれがある。そのため、印刷樹脂シート製品の歩留まりが低下し、製造効率の低下を招いていた。   However, in such a conventional technique, since the unevenness of the resin sheet is performed after the printing layer is formed, the molding distortion generated in the resin sheet adversely affects the printing layer, and the printing layer and the unevenness portion There is a risk of misalignment and distortion of the printed layer itself. As a result, the yield of printed resin sheet products is reduced, leading to a reduction in manufacturing efficiency.

本発明は、このような従来の技術に着目してなされたものであり、印刷層が樹脂シートの成形歪みの影響を受けない印刷樹脂シート製品の製造方法を提供するものである。   The present invention has been made paying attention to such a conventional technique, and provides a method for producing a printed resin sheet product in which a printed layer is not affected by molding distortion of the resin sheet.

請求項1記載の発明は、樹脂シートに形成された凹凸部の表側又は裏側の少なくとも一方に設定された印刷面に印刷層を形成する印刷樹脂シート製品の製造方法であって、樹脂シートの印刷面にインクジェット印刷の受容層を形成し、樹脂シート又はインクジェットノズルのいずれか一方を走査させながら移動させることにより、インクジェットノズルを樹脂シートに対して相対的に印刷方向へ移動させ、インクジェットノズルから吐出したインクにより、凹凸部の印刷面に対して印刷層を形成することを特徴とする。   The invention according to claim 1 is a method for manufacturing a printed resin sheet product, wherein a printed layer is formed on a printing surface set on at least one of a front side or a back side of a concavo-convex portion formed on a resin sheet, the printing of the resin sheet An ink jet printing receiving layer is formed on the surface, and either the resin sheet or the ink jet nozzle is moved while being scanned, thereby moving the ink jet nozzle in the printing direction relative to the resin sheet and discharging from the ink jet nozzle. A printed layer is formed on the printing surface of the concavo-convex portion with the ink thus formed.

請求項2記載の発明は、樹脂シートの凹凸部を真空成形又は真空圧空成形により形成することを特徴とする。   The invention according to claim 2 is characterized in that the uneven portion of the resin sheet is formed by vacuum forming or vacuum / pressure forming.

請求項3記載の発明は、受容層に乾燥時50重量%以上となる熱可塑性樹脂が含有されていることを特徴とする。   The invention described in claim 3 is characterized in that the receiving layer contains a thermoplastic resin of 50% by weight or more when dried.

請求項4記載の発明は、樹脂シート又はインクジェットノズルのいずれか一方が、他方との距離を調整自在な状態で支持され、インクジェットノズルを樹脂シートとの距離を一定に保った状態で相対的に印刷方向へ移動させることを特徴とする。   According to a fourth aspect of the present invention, either the resin sheet or the ink jet nozzle is supported in a state where the distance from the other is adjustable, and the ink jet nozzle is relatively kept in a state where the distance from the resin sheet is kept constant. It is characterized by moving in the printing direction.

請求項1記載の発明によれば、樹脂シートに受容層を形成すると共に、樹脂シートの凹凸成形を先に行い、その後に凹凸部に対してインクジェット方式による非接触の印刷を行うため、印刷層が樹脂シートの成形歪みの影響を受けず、歩留まりが向上する。   According to the first aspect of the present invention, the receiving layer is formed on the resin sheet, the unevenness of the resin sheet is formed first, and then the contactless printing by the inkjet method is performed on the unevenness portion. However, the yield is improved without being affected by the molding distortion of the resin sheet.

請求項2記載の発明によれば、樹脂シートの凹凸成形を真空成形又は真空圧空成形により行うため、樹脂シートの凹凸成形時に受容層にクラックが発生するのを抑制することができる。   According to invention of Claim 2, since the uneven | corrugated shaping | molding of a resin sheet is performed by vacuum forming or vacuum-pressure forming, it can suppress that a crack generate | occur | produces in a receiving layer at the time of uneven | corrugated shaping | molding of a resin sheet.

請求項3記載の発明によれば、受容層に50重量%の熱可塑性樹脂を含有させたため、樹脂シートの凹凸成形時に受容層にクラックが発生するのを抑制することができる。   According to the third aspect of the present invention, since the receiving layer contains 50% by weight of the thermoplastic resin, it is possible to suppress the occurrence of cracks in the receiving layer at the time of forming the unevenness of the resin sheet.

請求項4記載の発明によれば、樹脂シート又はインクジェットノズルのいずれか一方が、接離方向に移動して他方との距離を調整自在なため、凹部の深さ又は凸部の高さが大きくても、インクジェットノズルと樹脂シートとの距離を一定に保った状態で正確な印刷層を形成することができる。   According to the invention described in claim 4, since either one of the resin sheet or the ink jet nozzle moves in the contact / separation direction and the distance to the other can be adjusted, the depth of the concave portion or the height of the convex portion is large. Even when the distance between the inkjet nozzle and the resin sheet is kept constant, an accurate printed layer can be formed.

印刷層が樹脂シートの成形歪みの影響を受けない印刷樹脂シート製品の製造方法を提供する、という目的を、樹脂シートに形成された凹凸部の表側又は裏側の少なくとも一方に設定された印刷面に印刷層を形成する印刷樹脂シート製品の製造方法であって、樹脂シートの印刷面にインクジェット印刷の受容層を形成し、樹脂シート又はインクジェットノズルのいずれか一方を走査させながら移動させることにより、インクジェットノズルを樹脂シートに対して相対的に印刷方向へ移動させ、インクジェットノズルから吐出したインクにより、凹凸部の印刷面に対して印刷層を形成することにより、実現した。   For the purpose of providing a method for producing a printed resin sheet product in which the printed layer is not affected by the molding distortion of the resin sheet, the printed surface is set on at least one of the front side or the back side of the uneven portion formed on the resin sheet. A method for producing a printed resin sheet product for forming a printing layer, wherein an ink jet printing receiving layer is formed on a printing surface of a resin sheet, and either one of the resin sheet or an inkjet nozzle is moved while being scanned, whereby inkjet printing is performed. This was realized by moving the nozzle in the printing direction relative to the resin sheet and forming a printing layer on the printing surface of the concavo-convex portion with ink ejected from the inkjet nozzle.

以下、本発明の一実施例を図1〜図6に基づいて説明する。   An embodiment of the present invention will be described below with reference to FIGS.

符号1は、印刷樹脂シート製品で有る。該印刷樹脂シート製品1は、自動車の計器パネルに用いられる表示板を形成するためのものであり、ポリプロピレン(PP)製の樹脂シート2の中央には、円錐状の凸部3が形成されている。凸部3の表面側には、頂部に平面状の第1印刷面4aが形成され、その周縁に傾斜状の第2印刷面4bが設定されている。第1印刷面4aには文字、記号、目盛などから成る第1印刷層5aが形成され、第2印刷面4bには塗りつぶし状の第2印刷層5bが形成されている。特に、周縁の第2印刷層5bが傾斜状の第2印刷面4bと完全に一致することが要求される。第1印刷層5aと第2印刷層5bを形成した後、凸部3だけを切り取って、表示板として利用される。   Reference numeral 1 denotes a printed resin sheet product. The printed resin sheet product 1 is for forming a display plate used for an instrument panel of an automobile, and a conical convex portion 3 is formed at the center of a resin sheet 2 made of polypropylene (PP). Yes. On the surface side of the convex portion 3, a flat first printing surface 4 a is formed at the top, and an inclined second printing surface 4 b is set on the periphery thereof. A first print layer 5a composed of characters, symbols, scales, and the like is formed on the first print surface 4a, and a solid second print layer 5b is formed on the second print surface 4b. In particular, it is required that the peripheral second printed layer 5b completely coincides with the inclined second printed surface 4b. After forming the first print layer 5a and the second print layer 5b, only the convex portion 3 is cut out and used as a display board.

次に、この印刷樹脂シート製品1の製造方法について説明する。まず、平板状の樹脂シート2の表面に、定着層6を形成し、その上にインクジェット用の受容層7を形成する(図3)。定着層6及び受容層7の形成は、コーターによる塗布、スクリーン印刷、塗装などにより行うことができる。   Next, the manufacturing method of this printing resin sheet product 1 is demonstrated. First, the fixing layer 6 is formed on the surface of the flat resin sheet 2, and the ink-receiving layer 7 is formed thereon (FIG. 3). The fixing layer 6 and the receiving layer 7 can be formed by coating with a coater, screen printing, painting, or the like.

受容層7はインクジェットのインクを吸収定着させて、インクのにじみを防止するためのものである。受容層7は、一般に無機顔料(非晶質シリカ)と有機成分(バインダー樹脂等)の混合物から成るが、この実施形態では更にウレタン系の熱可塑性樹脂を乾燥時に50重量%となるように含有させている。   The receiving layer 7 is for absorbing and fixing ink jet ink to prevent ink bleeding. The receiving layer 7 is generally composed of a mixture of an inorganic pigment (amorphous silica) and an organic component (binder resin or the like). In this embodiment, the receiving layer 7 further contains a urethane-based thermoplastic resin so as to be 50% by weight when dried. I am letting.

次に、このようにして定着層6及び受容層7を表面に形成した樹脂シート2全体を加熱して軟化させ、真空成形用の金型8の上にセットする(図4)。金型8の上面には凸部3を形成するための円錐部9が形成され、金型8の上面全体には、複数の吸引通路10の吸引口が形成されている。従って、吸引通路10により空気の吸引を行うことにより、樹脂シート2には金型8の円錐部9に相応した凸部3が賦形される。尚、上側にも金型を設け、上側から樹脂シート2に対して空気圧を与える真空圧空成形を行っても良い。   Next, the entire resin sheet 2 having the fixing layer 6 and the receiving layer 7 formed on the surface in this way is heated and softened and set on a vacuum forming die 8 (FIG. 4). A conical portion 9 for forming the convex portion 3 is formed on the upper surface of the mold 8, and suction ports of a plurality of suction passages 10 are formed on the entire upper surface of the mold 8. Therefore, by sucking air through the suction passage 10, the convex portion 3 corresponding to the conical portion 9 of the mold 8 is formed on the resin sheet 2. Note that a mold may also be provided on the upper side, and vacuum / pressure forming may be performed to apply air pressure to the resin sheet 2 from the upper side.

凸部3を形成した樹脂シート2は、冷却固化後、金型8から取り出す(図5)。成形された樹脂シート2は、凸部3の成形を、プレス成形でなく、真空成形(又は真空圧空成形)により行ったため、受容層7にクラック等が発生してない。また、受容層7に50重量%の熱可塑性樹脂を含有させたことも、クラックの抑制に寄与している。   The resin sheet 2 on which the convex portions 3 are formed is taken out from the mold 8 after being cooled and solidified (FIG. 5). In the molded resin sheet 2, the convex portion 3 is not formed by press molding but by vacuum molding (or vacuum / pressure forming), so that no cracks or the like are generated in the receiving layer 7. The inclusion of 50% by weight of the thermoplastic resin in the receiving layer 7 also contributes to the suppression of cracks.

次に、この凸部3を形成した樹脂シート2に対してインクジェットノズル11からインク12を吐出して、凸部3の第1印刷面4a及び第2印刷面4bに対して第1印刷層5a及び第2印刷層5bを形成する。インクジェットノズル11は、左右に走査しながら送り方向Aへ移動する。また、このインクジェットノズル11は、左右及び送り方向の2軸だけでなく、上下方向Bにも制御できる3軸制御構造になっている。従って、インクジェットノズル11が樹脂シート2の一般面から凸部3の第2印刷面4bに達すると、第2印刷面4bに合わせてインクジェットノズル11の高さが上昇し、インクジェットノズル11と第1印刷面4a及び第2印刷面4bとの距離が常に一定になるように制御される。   Next, the ink 12 is ejected from the inkjet nozzle 11 to the resin sheet 2 on which the convex portion 3 is formed, and the first printed layer 5a is applied to the first printed surface 4a and the second printed surface 4b of the convex portion 3. And the 2nd printing layer 5b is formed. The inkjet nozzle 11 moves in the feed direction A while scanning left and right. The inkjet nozzle 11 has a three-axis control structure that can control not only two axes in the left and right and feed directions, but also in the vertical direction B. Accordingly, when the ink jet nozzle 11 reaches the second printing surface 4b of the convex portion 3 from the general surface of the resin sheet 2, the height of the ink jet nozzle 11 increases in accordance with the second printing surface 4b, and the ink jet nozzle 11 and the first printing surface 4b. The distance between the printing surface 4a and the second printing surface 4b is controlled so as to be always constant.

従って、凸部3の高さが大きくても、インクジェットノズル11と凸部3との距離は常に一定で、凸部3に対して正確な印刷を行うことができる。また、すでに凸部3が形成され、成形時の歪みや収縮が発生した後の樹脂シート2に対してインクジェット印刷を行うため、形成された第1印刷層5a及び第2印刷層5bが成形歪みの影響を受けることはなく、第1印刷層5a及び第2印刷層5bと、第1印刷面4a及び第2印刷面4bとが完全に一致し、第1印刷層5a及び第2印刷層5b自体にも歪みが生じることはない。   Therefore, even if the height of the convex portion 3 is large, the distance between the inkjet nozzle 11 and the convex portion 3 is always constant, and accurate printing can be performed on the convex portion 3. Moreover, since the convex part 3 is already formed and inkjet printing is performed with respect to the resin sheet 2 after distortion and shrinkage at the time of molding occur, the formed first printing layer 5a and second printing layer 5b are subjected to molding distortion. The first print layer 5a and the second print layer 5b are completely coincident with the first print layer 4a and the second print layer 4b, and the first print layer 5a and the second print layer 5b are not affected. There is no distortion in itself.

以上の実施例では、樹脂シート2に凸部3を形成する例を示したが、凹部を形成しても良く、凸部3と凹部の両方を形成しても良い。また、インクジェットノズル11を印刷方向A及び上下方向Bに移動させる例を示したが、樹脂シート2の方を移動させても良い。更に、第1印刷層5a及び第2印刷層5bを凸部3の片面に形成する例を示したが、両面に形成しても良い。   Although the example which forms the convex part 3 in the resin sheet 2 was shown in the above Example, a recessed part may be formed and both the convex part 3 and a recessed part may be formed. Moreover, although the example which moves the inkjet nozzle 11 to the printing direction A and the up-down direction B was shown, you may move the direction of the resin sheet 2. FIG. Furthermore, although the example which forms the 1st printing layer 5a and the 2nd printing layer 5b in the single side | surface of the convex part 3 was shown, you may form in both surfaces.

本発明の一実施例に係る印刷樹脂シート製品を示す平面図。The top view which shows the printing resin sheet product which concerns on one Example of this invention. 図1の印刷樹脂シート製品を示す断面図。Sectional drawing which shows the printing resin sheet product of FIG. 図2の成形前の樹脂シートと金型を示す断面図。Sectional drawing which shows the resin sheet and metal mold | die before shaping | molding of FIG. 図3の金型により樹脂シートを成形している状態を示す断面図。Sectional drawing which shows the state which has shape | molded the resin sheet with the metal mold | die of FIG. 図4による成形後の樹脂シートを示す断面図。Sectional drawing which shows the resin sheet after shaping | molding by FIG. 図2に示す印刷樹脂シート製品における樹脂シートに対してインクジェットノズルで印刷を行っている状態を示す断面図。Sectional drawing which shows the state which is printing with the inkjet nozzle with respect to the resin sheet in the printed resin sheet product shown in FIG.

符号の説明Explanation of symbols

1 印刷樹脂シート製品
2 樹脂シート
3 凸部
4a 第1印刷面
4b 第2印刷面
5a 第1印刷層
5b 第2印刷層
6 定着層
7 受容層
8 金型
9 円錐部
10 吸引通路
11 インクジェットノズル
12 インク
A 送り方向
B 上下方向
DESCRIPTION OF SYMBOLS 1 Printing resin sheet product 2 Resin sheet 3 Convex part 4a 1st printing surface 4b 2nd printing surface 5a 1st printing layer 5b 2nd printing layer 6 Fixing layer 7 Receiving layer 8 Mold 9 Cone part 10 Suction passage 11 Inkjet nozzle 12 Ink A Feed direction B Vertical direction

Claims (4)

樹脂シート(2)に形成された凹凸部(3)の表側又は裏側の少なくとも一方に設定された印刷面(4a、4b)に印刷層(5a、5b)を形成する印刷樹脂シート製品(1)の製造方法であって、
樹脂シート(2)の印刷面(4a、4b)にインクジェット印刷の受容層(7)を形成し、
樹脂シート(2)又はインクジェットノズル(11)のいずれか一方を走査させながら移動させることにより、インクジェットノズル(11)を樹脂シート(2)に対して相対的に印刷方向(A)へ移動させ、インクジェットノズル(11)から吐出したインク(12)により、凹凸部(3)の印刷面(4a、4b)に対して印刷層(5a、5b)を形成することを特徴とする印刷樹脂シート製品の製造方法。
Printed resin sheet product (1) for forming a printing layer (5a, 5b) on the printing surface (4a, 4b) set on at least one of the front side or the back side of the uneven portion (3) formed on the resin sheet (2) A manufacturing method of
An ink jet printing receiving layer (7) is formed on the printing surface (4a, 4b) of the resin sheet (2),
By moving either the resin sheet (2) or the inkjet nozzle (11) while scanning, the inkjet nozzle (11) is moved in the printing direction (A) relative to the resin sheet (2), A printed resin sheet product comprising: a printed layer (5a, 5b) formed on a printed surface (4a, 4b) of an uneven portion (3) by ink (12) ejected from an inkjet nozzle (11); Production method.
請求項1記載の印刷樹脂シート製品の製造方法であって、
樹脂シート(1)の凹凸部(3)を真空成形又は真空圧空成形により形成することを特徴とする印刷樹脂シート製品の製造方法。
A method for producing a printed resin sheet product according to claim 1,
A method for producing a printed resin sheet product, wherein the uneven portion (3) of the resin sheet (1) is formed by vacuum forming or vacuum / pressure forming.
請求項1又は請求項2記載の印刷樹脂シート製品の製造方法であって、
受容層(7)に乾燥時50重量%以上となる熱可塑性樹脂が含有されていることを特徴とする印刷樹脂シート製品の製造方法。
A method for producing a printed resin sheet product according to claim 1 or 2,
A method for producing a printed resin sheet product, characterized in that the receiving layer (7) contains a thermoplastic resin of 50% by weight or more when dried.
請求項1〜3のいずれか1項に記載の印刷樹脂シート製品の製造方法であって、
樹脂シート(2)又はインクジェットノズル(11)のいずれか一方が、他方との距離を調整自在な状態で支持され、インクジェットノズル(11)を樹脂シート(2)との距離を一定に保った状態で相対的に印刷方向(A)へ移動させることを特徴とする印刷樹脂シート製品の製造方法。
It is a manufacturing method of the printing resin sheet product according to any one of claims 1 to 3,
Either the resin sheet (2) or the inkjet nozzle (11) is supported in a state in which the distance from the other is adjustable, and the distance between the inkjet nozzle (11) and the resin sheet (2) is kept constant The method for producing a printed resin sheet product, wherein the printing resin sheet product is moved relatively in the printing direction (A).
JP2004135619A 2004-04-30 2004-04-30 Production method of printed resin sheet product Withdrawn JP2005313107A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012130876A (en) * 2010-12-22 2012-07-12 Seiko Epson Corp Recording device, and method for manufacturing molded article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012130876A (en) * 2010-12-22 2012-07-12 Seiko Epson Corp Recording device, and method for manufacturing molded article

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