JP2016073901A - Printing method on coating film surface - Google Patents
Printing method on coating film surface Download PDFInfo
- Publication number
- JP2016073901A JP2016073901A JP2014204744A JP2014204744A JP2016073901A JP 2016073901 A JP2016073901 A JP 2016073901A JP 2014204744 A JP2014204744 A JP 2014204744A JP 2014204744 A JP2014204744 A JP 2014204744A JP 2016073901 A JP2016073901 A JP 2016073901A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- coating film
- printing
- paint
- ink
- 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
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 82
- 239000011248 coating agent Substances 0.000 title claims abstract description 78
- 238000007639 printing Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 16
- 239000003973 paint Substances 0.000 claims description 55
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000002783 friction material Substances 0.000 description 31
- 238000007641 inkjet printing Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000003607 modifier Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000007591 painting process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002365 multiple layer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Braking Arrangements (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
本発明は、液状の熱硬化性塗料からなる塗膜表面へインクジェット式の印刷装置を用いて印刷する印刷方法に関する。 The present invention relates to a printing method for printing on a coating film surface made of a liquid thermosetting paint using an ink jet printing apparatus.
自動車のディスクブレーキに使用されるディスクブレーキパッドは、金属製のバックプレートと呼ばれるベース部材の片面に摩擦材を貼り合せた工業製品であり、摩擦材の摩擦面を除く表面全体に液状の熱硬化性塗料からなる保護用の塗膜を塗布し、その塗膜表面にインクジェット式の印刷装置を用いて各種文字や数字等を印刷している。
図２を参照しながら以下にディスクブレーキパッドの製造から印刷までの工程の一例について説明する。
Disc brake pads used in automobile disc brakes are industrial products in which a friction material is bonded to one side of a base member called a metal back plate, and the entire surface excluding the friction surface of the friction material is liquid thermoset. A protective coating made of a conductive coating is applied, and various characters, numbers, and the like are printed on the surface of the coating using an ink jet printer.
With reference to FIG. 2, an example of the process from manufacturing to printing of the disc brake pad will be described below.
＜１＞混合工程
繊維基材、熱硬化性樹脂等の結合材、潤滑材、研削材等の無機摩擦調整材、有機摩擦調整材等の摩擦材原料を所定量配合した摩擦材原料配合物を混合機に投入して均一に分散するまで撹拌混合し、摩擦材原料混合物を得る。
<1> Mixing process A friction material raw material composition containing a predetermined amount of a binder material such as a fiber base material, a thermosetting resin, an inorganic friction modifier such as a lubricant, an abrasive, and a friction material such as an organic friction modifier. The mixture is stirred and mixed until the mixture is uniformly dispersed to obtain a friction material raw material mixture.
＜２＞予備成型工程
計量した摩擦材原料混合物を予備成型用型に投入し、プレス装置を用いて加圧して摩擦材予備成型品を得る。
<2> Preliminary molding process The measured friction material raw material mixture is put into a preforming mold and pressurized using a press device to obtain a friction material preform.
＜３＞バックプレート洗浄・表面処理・接着剤塗布工程
金属製のバックプレートを洗浄し、防錆処理等の表面処理を行い、摩擦材の貼着予定面に接着剤を塗布する。
<3> Back plate cleaning / surface treatment / adhesive application step A metal back plate is washed, subjected to a surface treatment such as a rust prevention treatment, and an adhesive is applied to the surface where the friction material is to be adhered.
＜４＞加熱加圧成型工程
予備成型工程で得られた摩擦材予備成型品と、接着剤を塗布したバックプレートとを重ねて熱成型用型に投入し、プレス装置を用いて加熱加圧して摩擦材を成型すると同時に、バックプレートに摩擦材を貼り付ける。
<4> Heat and pressure molding process The friction material preform formed in the preforming process and the back plate coated with the adhesive are stacked and placed in a thermoforming mold, and heated and pressurized using a press device. At the same time that the friction material is molded, the friction material is applied to the back plate.
＜５＞熱処理工程
摩擦材の成型品を炉の中で加熱して、摩擦材に結合材として含まれる熱硬化性樹脂の硬化反応を完了させる。
<5> Heat treatment step The molded product of the friction material is heated in a furnace to complete the curing reaction of the thermosetting resin contained in the friction material as a binder.
＜６＞研磨工程
砥石を具備する研磨装置で摩擦材の表面を研磨して摩擦面を仕上げる。
<6> Polishing process The surface of the friction material is polished by a polishing apparatus equipped with a grindstone to finish the friction surface.
＜７＞塗装工程
防錆や商品価値の向上を目的とし、摩擦材の摩擦面を除く表面全体に液状の熱硬化性の塗料をスプレー塗装し、加熱して塗装を焼き付ける。
<7> Painting process For the purpose of rust prevention and improvement of commercial value, spray a liquid thermosetting paint on the entire surface except the friction surface of the friction material, and heat and bake the coating.
＜８＞印刷工程
塗膜の表面に、製造業者の商標、品番、材質名、ロット番号、バーコード等の複数の印字マークを、インクジェット式の印刷装置を用いて印刷する。
<8> Printing process A plurality of print marks such as a manufacturer's trademark, product number, material name, lot number, and barcode are printed on the surface of the coating film using an ink jet printing apparatus.
＜９＞選択工程
必要に応じて、チャンファーと呼ばれる面取り部を形成するチャンファー加工工程や、スリットを加工するスリット加工工程、バーナーや熱板により摩擦面を焼くスコーチ工程等を適宜実施する。
<9> Selection Step If necessary, a chamfer processing step for forming a chamfer called a chamfer, a slit processing step for processing a slit, a scorch step for baking a friction surface with a burner or a hot plate, and the like are appropriately performed.
このようにして製造したディスクブレーキパッドは、梱包作業性の要請から、各ディスクブレーキパッドのバックプレートの表面に他の摩擦材の摩擦面を接面させて積み重ねた状態で出荷している。 The disc brake pads manufactured in this way are shipped in a state of being stacked with the friction surfaces of other friction materials in contact with the surface of the back plate of each disc brake pad because of the demand for packing workability.
従来の塗膜表面への印刷技術にはつぎのような問題点を有する。
＜１＞複数のディスクブレーキパッドを重ねた状態で運搬すると、振動によって、バックプレートの表面に印刷した印字マークが摩擦材の摩擦面に存在する研削材等の硬質原料に削り取られて識別できなくなるという問題が生じる。
＜２＞印字マークの摩滅防止を目的として、摩擦材の摩擦面同士を向い合せて梱包すると、梱包作業の効率が極端に低下するといった問題がある。
＜３＞印字マークの剥落は運搬中に限らず、ブレーキ装置に組み込んで使用する際にも、キャリパやピストン等の周辺部品との摩擦により印字マークが剥落する。さらにブレーキフルードやブレーキ鳴き止め用のグリス等の油脂にインクが侵されることにより印字マークが消滅して識別できなくなるという問題が生じる。
＜４＞一方で、塗装工程でディスクブレーキパッドに形成される塗膜自体にも、ブレーキフルードやブレーキ鳴き止め用のグリス等の油脂に侵されないように高い耐油性が要求されており、この要求を満たすために塗料として、エポキシ系塗料、アクリル系塗料、アルキド系塗料等の耐油性の高い熱硬化性塗料が使用されている。
しかし、このような耐油性の高い塗膜に対しては、印刷工程で用いられるインクの濡れ性が極めて悪く、塗膜とインクとの間に充分な密着性を得ることができず、印字マークの耐摩擦性と耐油性を低下させる要因となっている。
＜５＞塗膜表面へのインクの濡れ性を向上させる目的で、塗膜表面に、コロナ処理、プラズマ処理、又はフレーム処理等の前処理を施す方法も考えられるが、前処理装置が煩雑となり、処理工数や製造コストが増加するので好ましくない。
The conventional printing technology for coating surfaces has the following problems.
<1> When a plurality of disc brake pads are transported in a stacked state, the print mark printed on the surface of the back plate is scraped off by a hard material such as an abrasive existing on the friction surface of the friction material due to vibration, and cannot be identified. The problem arises.
<2> If the friction surfaces of the friction material face each other for the purpose of preventing the print marks from being worn, there is a problem that the efficiency of the packing operation is extremely reduced.
<3> The print mark is not peeled off during transportation, but the print mark is also peeled off due to friction with peripheral parts such as a caliper and a piston when used in a brake device. Furthermore, when the ink is soaked in oil such as brake fluid and brake squealing grease, the print mark disappears and cannot be identified.
<4> On the other hand, the coating itself formed on the disc brake pad in the painting process is also required to have high oil resistance so that it is not affected by oil such as brake fluid or grease for brake squeal. In order to satisfy these requirements, thermosetting paints with high oil resistance such as epoxy paints, acrylic paints, and alkyd paints are used.
However, for such a highly oil-resistant coating film, the wettability of the ink used in the printing process is extremely poor, and sufficient adhesion cannot be obtained between the coating film and the ink. This is a factor that decreases the friction resistance and oil resistance of the steel.
<5> For the purpose of improving the wettability of the ink on the surface of the coating film, a pretreatment method such as corona treatment, plasma treatment, or flame treatment may be applied to the coating film surface, but the pretreatment device becomes complicated. This is not preferable because the processing man-hours and manufacturing costs increase.
又、従来の一般的な印字手段をディスクブレーキパッド等の工業製品へ適用する場合にはつぎのような問題点を有する。
＜１＞特許文献１に開示されたレーザー光を照射して刻印する方法にあっては、塗装を除去して刻印するため、刻印した部位の塗膜が薄くなり、塗膜強度が低下しやすくなる。
＜２＞特許文献２には、素材に単層、又は複層の塗膜層を形成する工程、前記塗膜層が未硬化の状態の上に、インクジェットにより印字マークを形成する工程、必要に応じて加熱、又は活性エネルギー線を用いてインクと塗膜を同時に硬化させる工程を経て印字するインクジェット印字方法が開示されている。
特許文献３には、耐熱性基材表面に、耐熱性塗料を塗布し、未硬化着色塗膜を形成し、次いで該塗膜表面に、溶剤可溶性含金属染料及び溶剤可溶性の耐熱性結合剤を主成分とし、前記塗料より比重及び表面張力が小さく前記塗料とは異色のインクをインクジェット印刷法にて吐出し、マーキング膜を形成し、次いで得られたマーキング膜及び前記塗膜を同時に硬化せしめることを特徴とするマーキング方法が開示されている。
特許文献４には、素材の表面に塗料、又はインクにより下地層を形成する下地層形成処理工程と、下地層形成工程で形成された下地層が生乾き状態の時に、その下地層の表面に、インクジェットプリンタにより所定の画像を油性インクによりプリントするプリント処理工程とからなることを特徴とするインクジェット式プリンタによる画像プリント方法が記載されている。
これらの特許文献２〜４に開示された従来の印刷技術は過酷な環境での使用を前提としていないために、ディスクブレーキパッドのように過酷な環境で使用されることが多い工業製品に適用した場合には、印字マークの剥落を防止できるだけの耐久性が得られない。
Further, when the conventional general printing means is applied to an industrial product such as a disc brake pad, it has the following problems.
<1> In the method of engraving by irradiating the laser beam disclosed in Patent Document 1, since the coating is removed and engraving is performed, the coating film at the engraved portion becomes thin, and the coating film strength is likely to decrease. Become.
<2> Patent Document 2 includes a step of forming a single-layer or multiple-layer coating layer on a material, a step of forming a print mark by inkjet on an uncured state of the coating layer, and Accordingly, there has been disclosed an ink jet printing method in which printing is performed through a step of simultaneously curing an ink and a coating film using heating or active energy rays.
In Patent Document 3, a heat-resistant coating is applied to the surface of a heat-resistant substrate to form an uncured colored coating film, and then a solvent-soluble metal-containing dye and a solvent-soluble heat-resistant binder are applied to the coating film surface. The main component is a specific gravity and surface tension smaller than that of the paint, and ink of a different color from the paint is ejected by an ink jet printing method to form a marking film, and then the resulting marking film and the coating film are simultaneously cured. A marking method is disclosed.
In Patent Document 4, when the underlayer formed by the undercoat layer forming process on the surface of the material using a paint or ink and the underlayer formed in the underlayer formation process are in a dry state, on the surface of the underlayer, An image printing method using an ink jet printer is described which includes a print processing step of printing a predetermined image with oil-based ink using an ink jet printer.
Since the conventional printing techniques disclosed in these Patent Documents 2 to 4 are not premised on use in a harsh environment, they are applied to industrial products that are often used in a harsh environment such as a disc brake pad. In such a case, it is not possible to obtain durability sufficient to prevent the print mark from peeling off.
本発明は以上の点に鑑みて成されたもので、その目的とするところは、液状の熱硬化性塗料からなる塗膜表面に、インクジェット式の印刷装置を用いてインクを印刷する印刷方法において、塗膜表面とインクとの密着性を向上させつ、耐久性の高い印字マークを得ることができる、塗膜表面への印刷方法を提供することにある。 The present invention has been made in view of the above points, and an object thereof is a printing method for printing ink on a coating film surface made of a liquid thermosetting paint using an ink jet printing apparatus. An object of the present invention is to provide a method for printing on the surface of a coating film, which can obtain a highly durable print mark while improving the adhesion between the surface of the coating film and ink.
本発明者らは鋭意検討を重ねた結果、ディスクブレーキパッドに液状の熱硬化性塗料を塗装し、熱硬化性塗料が硬化しない温度で加熱することにより溶剤を揮発させた後、塗膜表面にインクジェットプリンタを用いて印刷し、その後、熱硬化性塗料が硬化する温度で加熱して塗装を焼き付けることにより耐久性の高い印刷物を得られることを知見した。 As a result of intensive studies, the present inventors applied a liquid thermosetting paint to the disc brake pad, volatilized the solvent by heating at a temperature at which the thermosetting paint does not cure, and then applied to the coating film surface. It has been found that a highly durable printed matter can be obtained by printing using an ink jet printer and then baking at a temperature at which the thermosetting paint is cured.
又、この印刷方法は、ディスクブレーキパッド以外の、液状の熱硬化性塗料からなる塗膜が形成される工業製品においても好適である。 This printing method is also suitable for industrial products in which a coating film made of a liquid thermosetting paint other than the disc brake pad is formed.
本発明は、液状の熱硬化性塗料からなる塗膜表面に、インクジェット式の印刷装置を用いてインクを印刷する印刷方法に関し、以下の技術を基礎とするものである。 The present invention relates to a printing method for printing ink on a coating film surface made of a liquid thermosetting paint using an ink jet printing apparatus, and is based on the following technique.
（１）液状の熱硬化性塗料からなる塗膜表面に、インクジェット式の印刷装置を用いてインクを印刷する印刷方法において、液状の熱硬化性塗料を塗装し、熱硬化性塗料が硬化しない温度で加熱することにより溶剤を揮発させた後、塗膜表面にインクジェットプリンタを用いて印刷し、その後、熱硬化性塗料が硬化する温度で加熱して塗装を焼き付ける印刷方法。
（２）被塗装物がディスクブレーキパッドであることを特徴とする（１）の印刷方法。
(1) In a printing method in which an ink jet printer is used to print ink on the surface of a coating film made of a liquid thermosetting paint, a temperature at which the liquid thermosetting paint is applied and the thermosetting paint is not cured A printing method in which the solvent is volatilized by heating, and printing is performed on the surface of the coating film using an ink jet printer, and then the coating is baked by heating at a temperature at which the thermosetting paint is cured.
(2) The printing method according to (1), wherein the object to be coated is a disc brake pad.
本発明によれば、液状の熱硬化性塗料からなる塗膜表面に、インクジェット式の印刷装置を用いてインクを印刷する印刷方法において、塗膜表面とインクとの密着性を向上させて、耐久性の高い印字マークを印刷することができる。 According to the present invention, in a printing method in which ink is printed on a coating film surface made of a liquid thermosetting paint using an ink jet printing apparatus, the adhesion between the coating film surface and the ink is improved and durability is improved. High-quality print marks can be printed.
以下に図１を参照しながら、本発明を実施するための形態について説明する。 An embodiment for carrying out the present invention will be described below with reference to FIG.
＜１＞塗膜表面への印刷方法の概要
本発明は液状の熱硬化性塗料からなる塗膜表面へ向けて、インクジェット式の印刷装置を用いて各種の印字マークを印刷する印刷方法であり、液状の熱硬化性塗料を塗装し、熱硬化性塗料が硬化しない温度で加熱して溶剤を揮発させた後、塗膜表面にインクジェットプリンタを用いて印刷し、その後、熱硬化性塗料が硬化する温度で加熱して塗装を焼き付ける印刷方法である。
<1> Summary of printing method on coating film surface The present invention is a printing method for printing various print marks using an ink jet printing apparatus toward a coating film surface made of a liquid thermosetting paint, Apply a liquid thermosetting paint, heat at a temperature at which the thermosetting paint does not cure, volatilize the solvent, print on the coating surface using an inkjet printer, and then cure the thermosetting paint This is a printing method in which a coating is baked by heating at a temperature.
＜２＞印刷対象（被塗装物）
本例ではディスクブレーキパッドを対象に説明するが、印刷対象は液状の熱硬化性塗料を塗装する製品であればディスクブレーキパッドに限定されず、過酷な環境で使用される各種の工業製品に適用可能である。
<2> Print target (object to be coated)
In this example, the disc brake pad will be described. However, the print target is not limited to the disc brake pad as long as it is a product coated with a liquid thermosetting paint, and is applicable to various industrial products used in harsh environments. Is possible.
＜３＞ディスクブレーキパッドの製造から印刷までの工程
以下にディスクブレーキパッドの製造から印刷までの作業工程の一例について説明する。
<3> Steps from Manufacture to Printing of Disc Brake Pad An example of work steps from manufacture to printing of the disc brake pad will be described below.
＜３．１＞混合工程
繊維基材、熱硬化性樹脂等の結合材、潤滑材、研削材等の無機摩擦調整材、有機摩擦調整材等の摩擦材原料を所定量配合した摩擦材原料配合物を混合機に投入して均一に分散するまで撹拌混合し、摩擦材原料混合物を得る。
<3.1> Mixing step Friction material raw material blending predetermined amounts of fiber base materials, binders such as thermosetting resins, inorganic friction modifiers such as lubricants and abrasives, and friction material raw materials such as organic friction modifiers The product is put into a mixer and stirred and mixed until it is uniformly dispersed to obtain a friction material raw material mixture.
＜３．２＞予備成型工程
計量した摩擦材原料混合物を予備成型用型に投入し、プレス装置を用いて加圧して摩擦材予備成型品を得る。
<3.2> Preliminary molding step The measured friction material raw material mixture is put into a preforming mold and pressurized using a press device to obtain a friction material preform.
＜３．３＞バックプレート洗浄・表面処理・接着剤塗布工程
金属製のバックプレートを洗浄し、防錆処理等の表面処理を行い、摩擦材の貼着予定面に接着剤を塗布する。
<3.3> Backplate Cleaning / Surface Treatment / Adhesive Application Step The metal backplate is cleaned, subjected to surface treatment such as rust prevention treatment, and the adhesive is applied to the planned adhesion surface of the friction material.
＜３．４＞加熱加圧成型工程
予備成型工程で得られた摩擦材予備成型品と、接着剤を塗布したバックプレートとを重ねて熱成型用型に投入し、プレス装置を用いて加熱加圧して摩擦材を成型すると同時に、バックプレートに摩擦材を貼り付ける。
<3.4> Heating and pressing molding process The friction material preform obtained in the preforming process and the back plate coated with the adhesive are stacked and put into a thermoforming mold, and heated using a press device. At the same time as the friction material is molded by pressing, the friction material is applied to the back plate.
＜３．５＞熱処理工程
摩擦材の成型品を炉の中で加熱して、摩擦材に結合材として含まれる熱硬化性樹脂の硬化反応を完了させる。
<3.5> Heat treatment step The molded product of the friction material is heated in a furnace to complete the curing reaction of the thermosetting resin contained in the friction material as a binder.
＜３．６＞研磨工程
砥石を具備する研磨装置で摩擦材の表面を研磨し、摩擦面を仕上げる。
<3.6> Polishing Step The surface of the friction material is polished by a polishing apparatus equipped with a grindstone to finish the friction surface.
＜３．７＞塗装工程
防錆や商品価値の向上を目的とし、摩擦材の摩擦面を除く表面全体に液状の熱硬化性塗料を塗装して表面に塗膜を形成する。
<3.7> Coating process For the purpose of improving rust prevention and commercial value, a liquid thermosetting paint is applied to the entire surface except the friction surface of the friction material to form a coating film on the surface.
＜３．７．１＞塗装方法
液状の熱硬化性塗料を塗装方法としては、例えばスプレー塗装方式、ローラ塗装方式、刷毛塗塗装方式等を適宜選択して塗装する。
<3.7.1> Coating method As a coating method of the liquid thermosetting paint, for example, a spray coating method, a roller coating method, a brush coating method, or the like is appropriately selected and applied.
＜３．７．２＞液状の熱硬化性塗料
塗膜に用いる液状の熱硬化性塗料は加熱することで溶剤が揮発すると共に、塗装中の樹脂が反応して重合を伴って硬化する塗料であり、例えばエポキシ系塗料、アクリル系塗料、アルキド系塗料から選択される塗料を使用することができる。
溶剤としては、例えばアルコール系溶剤、炭化水素系溶剤、エーテル系溶剤、ケトン系溶剤、エステル系溶剤、芳香族系溶剤、水等を使用できる。
<3.7.2> Liquid thermosetting paint The liquid thermosetting paint used in the coating film is a paint that cures with polymerization due to reaction of the resin in the coating as the solvent evaporates when heated. For example, a paint selected from an epoxy paint, an acrylic paint, and an alkyd paint can be used.
As the solvent, for example, alcohol solvents, hydrocarbon solvents, ether solvents, ketone solvents, ester solvents, aromatic solvents, water and the like can be used.
＜３．８＞加熱処理工程
塗膜を形成したディスクブレーキパッドを熱硬化性塗料の硬化が開始しない温度で加熱して塗料中の溶剤を揮発させる。
塗料中の溶剤を揮発させるための加熱は、熱風対流式、赤外線による輻射式加熱を使用することができ、加熱条件は、塗料に含まれる溶剤の種類や塗料の種類にもよるが、通常は５０℃〜１２０℃、５分〜６０分の範囲で行う。
<3.8> Heat treatment step The disk brake pad on which the coating film has been formed is heated at a temperature at which the curing of the thermosetting paint does not start to volatilize the solvent in the paint.
Heating to volatilize the solvent in the paint can be performed using hot air convection or infrared radiation, and the heating conditions depend on the type of solvent contained in the paint and the type of paint. It is carried out in the range of 50 to 120 ° C. and 5 to 60 minutes.
＜３．９＞印刷工程
塗膜の表面に、製造業者の商標、品番、材質名、ロット番号、バーコード等の複数の印字マークを、インクジェット式の印刷装置を用いて印刷する。
本発明では、以下に説明するように液体の熱硬化性塗料中の溶剤が揮発し、且つ、熱硬化性塗料の硬化が開始されていない状態で印刷を行うことが肝要である。
<3.9> Printing Step A plurality of print marks such as a manufacturer's trademark, product number, material name, lot number, and barcode are printed on the surface of the coating film using an ink jet printing apparatus.
In the present invention, as described below, it is important to perform printing in a state where the solvent in the liquid thermosetting paint is volatilized and curing of the thermosetting paint is not started.
＜３．９．１＞インク
印刷に用いるインクは、顔料系、染料系どちらでもよく、メチルエチルケトン、メタノール、アセトン等の有機溶剤を使用した速乾性のインクを使用するのが好ましい。
<3.9.1> Ink The ink used for printing may be either pigment-based or dye-based, and it is preferable to use a quick-drying ink using an organic solvent such as methyl ethyl ketone, methanol, and acetone.
＜３．９．２＞印刷時における塗膜の表面温度
インクを塗膜に強固に定着させるには、印刷時における塗膜の表面温度も重要である。
印刷時における塗膜の表面温度は工業製品の種別と、塗膜とインクの物性等を考慮して適宜選択する。
すなわち、ディスクブレーキパッドの塗膜表面に印刷する場合は、塗料中の溶剤を揮発させるための加熱処理工程の後に、塗膜表面にインクジェット式の印刷装置を用いて印刷を行う。
塗膜の表面温度は１０℃〜１００℃の範囲であり、実用上は２０℃〜８０℃の範囲であり、２５℃〜６０℃が最適な温度である。
<3.9.2> Surface temperature of coating film during printing In order to firmly fix the ink to the coating film, the surface temperature of the coating film during printing is also important.
The surface temperature of the coating film during printing is appropriately selected in consideration of the type of industrial product and the physical properties of the coating film and ink.
That is, when printing on the coating film surface of the disc brake pad, printing is performed on the coating film surface using an ink jet printing apparatus after the heat treatment step for volatilizing the solvent in the paint.
The surface temperature of the coating film is in the range of 10 ° C to 100 ° C, practically in the range of 20 ° C to 80 ° C, and 25 ° C to 60 ° C is the optimum temperature.
液体の熱硬化性塗料中の溶剤が揮発し、且つ、熱硬化性塗料の硬化が開始されていない状態（熱による架橋反応の開始前）の下でインクジェット式の印刷装置を用いて印刷すると、インクが未硬化状態の塗膜組織に浸透してインクの定着性(付着性)が格段に高くなる。また、溶剤が揮発しているのでインクの滲みが発生することがない。
これにより、塗膜の焼き付け後における塗膜とインク間の機械的強度が増強されて、耐久性の高い印字マークを得ることができる。
When the ink in the liquid thermosetting paint is volatilized and the thermosetting paint is not cured (before the crosslinking reaction by heat) is printed using an inkjet printer, The ink penetrates into the uncured coating film structure, and the fixability (adhesiveness) of the ink is remarkably increased. Further, since the solvent is volatilized, ink bleeding does not occur.
Thereby, the mechanical strength between the coating film and the ink after baking of the coating film is enhanced, and a highly durable print mark can be obtained.
＜３．１０＞塗装の焼き付け
印字マークの印刷を行った後、熱硬化性の塗料が硬化する温度（熱による架橋反応を生じる温度）で加熱して塗装を焼き付ける。
塗装の焼き付けは、熱風対流式、赤外線による輻射式加熱を使用することができ、塗装の焼き付け条件は、塗料の種類にもよるが、通常は１８０℃〜２５０℃、４分〜３０分の範囲で行う。
<3.10> Baking of coating After printing the print mark, the coating is baked by heating at a temperature at which the thermosetting coating is cured (a temperature at which a crosslinking reaction is caused by heat).
Baking of the paint can be performed using hot air convection or radiant heating by infrared rays, and the baking condition of the paint is usually in the range of 180 ° C to 250 ° C, 4 minutes to 30 minutes, depending on the type of paint. To do.
＜３．１１＞塗膜の冷却
塗膜表面の冷却方法としては、例えば強制冷却、室温での常温冷却等を適用することができる。
<3.11> Cooling of coating film As a cooling method of the coating film surface, for example, forced cooling, room temperature cooling at room temperature, or the like can be applied.
＜実施例１〜４＞
被塗装物として自動車用ディスクブレーキパッドのバックプレートに使用される自動車構造用熱間圧延鋼板ＳＡＰＨ４４０（厚さ６．０ｍｍ）を用い、表１の条件にて塗装し、溶剤を揮発させるための加熱を行った後、インクジェットプリンタにて「１２３４５６」の印字マークの印刷を行い、その後、塗装の焼き付けを行った。
<Examples 1-4>
Using hot rolled steel plate SAPH440 for automobile structure (thickness 6.0 mm) used for the back plate of disc brake pads for automobiles as the object to be coated, heating is performed to coat the solvent under conditions shown in Table 1 and volatilize the solvent. After printing, the print mark “123456” was printed by an ink jet printer, and then the coating was baked.
＜比較例１＞
被塗装物として自動車用ディスクブレーキパッドのバックプレートに使用される自動車構造用熱間圧延鋼板ＳＡＰＨ４４０（厚さ６．０ｍｍ）を用い、表１の条件にて塗装し、塗装の焼き付けを行った後、塗膜の表面が２５℃の状態のときにインクジェットプリンタにて、「１２３４５６」の印字マークの印刷を行った。
<Comparative Example 1>
After coating and baking the paint using the hot rolled steel plate SAPH440 for automobile structure (thickness 6.0 mm) used as the back plate of the disc brake pad for automobiles as the object to be coated When the surface of the coating film was at 25 ° C., a print mark “123456” was printed by an ink jet printer.
印字マークの耐久性は耐摩耗性と耐油性を評価した。評価方法および評価基準を表２に示す。 The durability of the printed marks was evaluated for wear resistance and oil resistance. Table 2 shows the evaluation method and evaluation criteria.
実施例１〜４については、印字マークの耐摩耗性と耐油性に関し、実用条件に耐え得る評価が得られた。
これに対し、塗装の焼き付けを行った後に印字マークを印刷した比較例１では、印字マークの耐摩耗性及び耐油性において印字マークが剥落して判別不能であった。
About Examples 1-4, the evaluation which can endure practical conditions was acquired regarding the abrasion resistance and oil resistance of a printing mark.
On the other hand, in Comparative Example 1 in which the print mark was printed after the coating was baked, the print mark was peeled off in the wear resistance and oil resistance of the print mark and could not be discriminated.
Claims (2)
被塗装物の表面に液状の熱硬化性塗料を塗布し、
前記熱硬化性塗料が硬化しない温度で前記塗膜表面を加熱して熱硬化性塗料中の溶剤を揮発させ、
インクの一部が塗料に浸透するように、熱硬化性塗料の硬化が開始されていない塗膜表面にインクジェットプリンタを用いて印刷し、
その後、熱硬化性塗料が硬化する温度で前記塗膜表面を加熱して塗装を焼き付けることを特徴とする、
塗膜表面への印刷方法。 A printing method for printing on the surface of a coating film formed by applying a liquid thermosetting paint on the surface of an object to be coated, using an ink jet printer,
Apply a liquid thermosetting paint to the surface of the object,
The coating film surface is heated at a temperature at which the thermosetting paint is not cured to volatilize the solvent in the thermosetting paint,
Use an inkjet printer to print on the surface of the coating where curing of the thermosetting paint has not started so that a portion of the ink penetrates the paint.
Thereafter, the coating surface is baked by heating the coating film surface at a temperature at which the thermosetting paint is cured,
Printing method on the coating surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014204744A JP2016073901A (en) | 2014-10-03 | 2014-10-03 | Printing method on coating film surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014204744A JP2016073901A (en) | 2014-10-03 | 2014-10-03 | Printing method on coating film surface |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019003343A Division JP6758433B2 (en) | 2019-01-11 | 2019-01-11 | Printing method on the coating film surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2016073901A true JP2016073901A (en) | 2016-05-12 |
Family
ID=55950484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014204744A Pending JP2016073901A (en) | 2014-10-03 | 2014-10-03 | Printing method on coating film surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2016073901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025094558A1 (en) * | 2023-10-30 | 2025-05-08 | リンテック株式会社 | Method for manufacturing semiconductor device, method for determining identity of semiconductor device, and system for manufacturing semiconductor device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5684668A (en) * | 1979-12-12 | 1981-07-10 | Nissha Printing Co Ltd | Production of in-mold decorated molding |
| JPH09314039A (en) * | 1996-05-23 | 1997-12-09 | Toyota Motor Corp | Plotting and coating method |
| US5799754A (en) * | 1994-08-08 | 1998-09-01 | Ferodo Abex Sa | Marking brake linings |
| JP2007222782A (en) * | 2006-02-23 | 2007-09-06 | Dainippon Toryo Co Ltd | Manufacturing method of design building materials |
| JP2007296766A (en) * | 2006-05-01 | 2007-11-15 | Yamamoto Kogei:Kk | Method for printing image by inkjet printer |
| US20080047791A1 (en) * | 2004-10-11 | 2008-02-28 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Brake pad with a type plate |
| JP2010017969A (en) * | 2008-07-11 | 2010-01-28 | Dainippon Toryo Co Ltd | Image forming method and image-formed matter |
| JP2012207081A (en) * | 2011-03-29 | 2012-10-25 | Mimaki Engineering Co Ltd | Ink and use thereof |
| WO2014147807A1 (en) * | 2013-03-22 | 2014-09-25 | 日清紡ブレーキ株式会社 | Friction material |
-
2014
- 2014-10-03 JP JP2014204744A patent/JP2016073901A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5684668A (en) * | 1979-12-12 | 1981-07-10 | Nissha Printing Co Ltd | Production of in-mold decorated molding |
| US5799754A (en) * | 1994-08-08 | 1998-09-01 | Ferodo Abex Sa | Marking brake linings |
| JPH09314039A (en) * | 1996-05-23 | 1997-12-09 | Toyota Motor Corp | Plotting and coating method |
| US20080047791A1 (en) * | 2004-10-11 | 2008-02-28 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Brake pad with a type plate |
| JP2007222782A (en) * | 2006-02-23 | 2007-09-06 | Dainippon Toryo Co Ltd | Manufacturing method of design building materials |
| JP2007296766A (en) * | 2006-05-01 | 2007-11-15 | Yamamoto Kogei:Kk | Method for printing image by inkjet printer |
| JP2010017969A (en) * | 2008-07-11 | 2010-01-28 | Dainippon Toryo Co Ltd | Image forming method and image-formed matter |
| JP2012207081A (en) * | 2011-03-29 | 2012-10-25 | Mimaki Engineering Co Ltd | Ink and use thereof |
| WO2014147807A1 (en) * | 2013-03-22 | 2014-09-25 | 日清紡ブレーキ株式会社 | Friction material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025094558A1 (en) * | 2023-10-30 | 2025-05-08 | リンテック株式会社 | Method for manufacturing semiconductor device, method for determining identity of semiconductor device, and system for manufacturing semiconductor device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4108763B2 (en) | Coated friction pad for brake assembly | |
| US9931667B2 (en) | Method for printing a wood material board and wood material board with printed decorative layer | |
| JP7183173B2 (en) | Decal manufacturing method, decal, decal manufacturing device, and surface decoration method for object | |
| TW557256B (en) | Process for the preparation of a decorated substrate | |
| JP6758433B2 (en) | Printing method on the coating film surface | |
| CN1803473A (en) | Method of forming an image or decoration on a carrier | |
| CN105073419B (en) | Painted, printed and coated parts | |
| US10882073B2 (en) | Method for manufacturing decorated article by decorating uneven surface, decorated article by decorating uneven surface, and method for manufacturing drawn article | |
| JP2016074207A (en) | Uv curable transfixing layer printing system and digital off-set printing method | |
| JP2017180018A (en) | Building board | |
| CN104070924A (en) | Vehicle rim with print graphics and methods of making | |
| KR20160056628A (en) | Heat Radiant Paint and nanotubes and Method for forming Heat Radiant coating layer of using the same | |
| CN107735186B (en) | Preprocess method for coating or printing | |
| JP2016073901A (en) | Printing method on coating film surface | |
| JP2017538576A (en) | Manufacturing method of transparent pattern printed steel sheet | |
| CN104002571B (en) | UV (Ultra Violet) printing and hot stamping process and UV matte varnish | |
| JP6385231B2 (en) | Printing method on the coating surface | |
| JP2017136810A (en) | Transfer printing method using adhesive ink for inkjet | |
| KR100946201B1 (en) | Manufacturing Method of Transfer Film | |
| JP2007292288A (en) | Brake member and bonding method | |
| US20040192807A1 (en) | Resin composition for digital printing on metallic material and printing method using the same | |
| JP2009114363A (en) | Resin laminate | |
| KR100689103B1 (en) | Thermal Sublimation Transfer Paper and Transfer Method Using the Same | |
| JP3205240U (en) | Laminated body | |
| CN107660260A (en) | It is included in the frictional disk of the friction lining bonded under uncrosslinked state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20170725 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20180423 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180515 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180627 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20181120 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20190521 |