Experimental study on the processing conditions of in-mold coating for injection-molded plates
In-Mold Coating (IMC) is novel coating method which achieves simultaneous injection molding and surface coating. In this paper, a mold for in-mold coating experiments was fabricated, which consisted of an overflow area, a coating channel, and sealing edges. The coating material used was two-componen...
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| Published in | International journal of precision engineering and manufacturing Vol. 17; no. 10; pp. 1333 - 1339 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Seoul
Korean Society for Precision Engineering
01.10.2016
Springer Nature B.V |
| Subjects | |
| Online Access | Get full text |
| ISSN | 2234-7593 2005-4602 |
| DOI | 10.1007/s12541-016-0158-x |
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| Abstract | In-Mold Coating (IMC) is novel coating method which achieves simultaneous injection molding and surface coating. In this paper, a mold for in-mold coating experiments was fabricated, which consisted of an overflow area, a coating channel, and sealing edges. The coating material used was two-component polyurethane with good transparency, high glossy, durability, and scratch resistance. The effects of the processing conditions of the in-mold coating on the bubbles and mixing characteristics in the injection molded plates were investigated. The bubbles that appeared over the substrate surface decreased, as the injected weight of the coating material increased. On the other hand, the bubbles increased with an increase of mass-flow rate. When the discharged flow rate was low, inhomogeneous surfaces appeared due to the poor mixing between polyol and isocyanate. It was found that the nozzle pressure of more than 180 bar was required to achieve uniform mixing. |
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| AbstractList | In-Mold Coating (IMC) is novel coating method which achieves simultaneous injection molding and surface coating. In this paper, a mold for in-mold coating experiments was fabricated, which consisted of an overflow area, a coating channel, and sealing edges. The coating material used was two-component polyurethane with good transparency, high glossy, durability, and scratch resistance. The effects of the processing conditions of the in-mold coating on the bubbles and mixing characteristics in the injection molded plates were investigated. The bubbles that appeared over the substrate surface decreased, as the injected weight of the coating material increased. On the other hand, the bubbles increased with an increase of mass-flow rate. When the discharged flow rate was low, inhomogeneous surfaces appeared due to the poor mixing between polyol and isocyanate. It was found that the nozzle pressure of more than 180 bar was required to achieve uniform mixing. |
| Author | Lee, Ho-Sang Kim, Dong-Mi |
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| References | Gite, Rajput, Yemul (CR5) 2012; 58 Zuyev, Castro, Straus (CR3) 2003 Lee, Kim (CR10) 2014 Park, Lee (CR11) 2015; 39 CR15 Kim, Kim, Kim (CR1) 2012; 13 Zuyev, Castro (CR2) 2002; 22 CR13 CR12 Ríos (CR4) 2002 Lee, Kim, Park (CR9) 2013 Bloß, Böhme, Müller, Krajewsky, Michaelis (CR14) 2014 Lee, Kim, Yoo (CR8) 2013 Gruber (CR7) 2011 Gruber (CR6) 2008 P. Bloß (158_CR14) 2014 K. S. Zuyev (158_CR2) 2002; 22 M. Gruber (158_CR6) 2008 M. C. Ríos (158_CR4) 2002 K. S. Zuyev (158_CR3) 2003 H. S. Lee (158_CR10) 2014 158_CR13 H. S. Lee (158_CR9) 2013 158_CR15 H. S. Lee (158_CR8) 2013 K.-I. Kim (158_CR1) 2012; 13 M. Gruber (158_CR7) 2011 158_CR12 J. R. Park (158_CR11) 2015; 39 V. V. Gite (158_CR5) 2012; 58 |
| References_xml | – volume: 13 start-page: 1633 issue: 9 year: 2012 end-page: 1639 ident: CR1 article-title: Characterization of Durability of Coatings for Cell Phone Cover by Wear, Erosion, and Pull-Off Tests publication-title: Int. J. Precis. Eng. Manuf. doi: 10.1007/s12541-012-0214-0 – start-page: 152 year: 2014 ident: CR10 article-title: A Study on the Cavity Pressure and Mixing Characteristics in In-Mold Coating Processes publication-title: Proc. of KSMTE Conference – start-page: 670 year: 2014 end-page: 673 ident: CR14 article-title: Adhesion Strength between Thermoplastics and Its Polyurethane Coating Made by using the Technology Combination of Injection Molding and Reaction Injection Molding publication-title: Proc. of the 29th International Conference of the Polymer Processing Society-Conference Papers – volume: 39 start-page: 687 issue: 7 year: 2015 end-page: 692 ident: CR11 article-title: An Experimental Study of In-Mold Coating of Automotive Armrests publication-title: Transactions of the Korean Society of Mechanical Engineers A doi: 10.3795/KSME-A.2015.39.7.687 – ident: CR15 – ident: CR12 – ident: CR13 – volume: 58 start-page: 201 issue: 2 year: 2012 end-page: 208 ident: CR5 article-title: Advances in Polyurethane Coating Technologies publication-title: Chemical Weekly – start-page: 103 year: 2013 ident: CR8 article-title: A Study on the Curing Characteristics of Two-Component Polyurethane during In-Mold Coating Processes publication-title: Proc. of KSMTE Conference – start-page: 42 year: 2013 end-page: 44 ident: CR9 article-title: Mold Design for Simultaneous Injection Molding and Surface Coating publication-title: Proc. of KSTP Conference – year: 2002 ident: CR4 publication-title: Multiple Criteria Optimization Studies in Reactive In-Mold Coating – year: 2008 ident: CR6 publication-title: Integrated System for Producing Composites – year: 2011 ident: CR7 publication-title: Method for Producing a Coated Composite Component – volume: 22 start-page: 233 issue: 4 year: 2002 end-page: 260 ident: CR2 article-title: Applications of Chemo-Rheology to Develop Process Windows in Reactive In-Mold Coating publication-title: Journal of Polymer Engineering doi: 10.1515/POLYENG.2002.22.4.233 – start-page: 510 year: 2003 end-page: 514 ident: CR3 article-title: Processing Studies in Reactive In-Mold Coating for Thermoplastic Parts publication-title: Proc. of ANTEC 2003 Conference Proceedings – volume: 13 start-page: 1633 issue: 9 year: 2012 ident: 158_CR1 publication-title: Int. J. Precis. Eng. Manuf. doi: 10.1007/s12541-012-0214-0 – volume: 39 start-page: 687 issue: 7 year: 2015 ident: 158_CR11 publication-title: Transactions of the Korean Society of Mechanical Engineers A doi: 10.3795/KSME-A.2015.39.7.687 – volume: 22 start-page: 233 issue: 4 year: 2002 ident: 158_CR2 publication-title: Journal of Polymer Engineering doi: 10.1515/POLYENG.2002.22.4.233 – ident: 158_CR15 – start-page: 670 volume-title: Proc. of the 29th International Conference of the Polymer Processing Society-Conference Papers year: 2014 ident: 158_CR14 – volume-title: Integrated System for Producing Composites year: 2008 ident: 158_CR6 – start-page: 42 volume-title: Proc. of KSTP Conference year: 2013 ident: 158_CR9 – volume-title: Method for Producing a Coated Composite Component year: 2011 ident: 158_CR7 – start-page: 510 volume-title: Proc. of ANTEC 2003 Conference Proceedings year: 2003 ident: 158_CR3 – start-page: 103 volume-title: Proc. of KSMTE Conference year: 2013 ident: 158_CR8 – ident: 158_CR12 – ident: 158_CR13 – volume-title: Multiple Criteria Optimization Studies in Reactive In-Mold Coating year: 2002 ident: 158_CR4 – volume: 58 start-page: 201 issue: 2 year: 2012 ident: 158_CR5 publication-title: Chemical Weekly – start-page: 152 volume-title: Proc. of KSMTE Conference year: 2014 ident: 158_CR10 |
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| SubjectTerms | Bubbles Engineering In-mold coating Industrial and Production Engineering Injection molding Isocyanates Mass flow rate Materials Science Plates Polyurethane resins Scratch resistance Substrates |
| Title | Experimental study on the processing conditions of in-mold coating for injection-molded plates |
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