Dead front decoration with letters that appear only when lit | In-mold forming
Hidden text decoration that is normally invisible and only becomes transparent when lit. Achieves both design and durability through in-mold decoration during molding.
You can download a PDF document summarizing case studies that address challenges in in-mold molding. I want to display the visuals and icons only when they are lit. I want a clean appearance most of the time. Yoshida Techno Works designed the composition of printed colors and transfer foils to achieve "dead front decoration (transparent text and hidden text)" through in-mold molding. When the power is turned on, light passes through the button area, revealing the display, while it appears blank most of the time. This has been adopted for the housing and buttons of a 360° camera. 【Features unique to in-mold molding】 - High design quality and durability are achieved by decorating simultaneously with molding. - A UV hard coat can be applied to the surface foil, protecting the surface. - It is also possible to combine with color printing, vapor deposition, matte, and other foils for expressive effects.
basic information
【Main Technologies and Methods】 - Injection molding + single in-mold - Dead front decoration (design of printed colors and transfer foil structure that are only visible when lit) 【Example of Foil Composition (Single In-Mold)】 - Surface foil: UV hard coat, pattern printing, vapor deposition, etc. - Resin: PMMA, PC, PP, etc. 【What is In-Mold Molding?】 It is a method where a film (in-mold foil) with a pre-printed design is sandwiched in a mold, and the design is transferred simultaneously during molding using the heat and pressure of injection molding. It was developed by Yoshida Technoworks in 1973, pioneering the world.
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Applications/Examples of results
【Adoption Results】 Housing (front and back) and buttons for 360° cameras 【Example Applications】 Exterior, buttons, and control panels of devices that only want to display when lit *Please feel free to consult us about applications for other products.
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**About Yoshida Techno Works** We are the world's first manufacturer to commercialize in-mold transfer molding, which utilizes plastic molding and decoration technology cultivated through cosmetic container manufacturing, allowing for simultaneous molding and transfer decoration. **Key Technologies** - Double in-mold molding that performs simultaneous decoration on both sides of the product - Hybrid molding that combines sheet inserts with in-mold techniques - Glass insert in-mold (GIM) molding that inserts reinforced glass into the mold, allowing for integrated molding of resin frames and decoration - Two-color in-mold molding that combines rotational two-color molding with in-mold transfer - Composite technology that integrates metal (such as SUS sheet metal and nuts) with in-mold molding - Real material (natural wood, fabric, synthetic leather, etc.) insert molding - Out-mold deep drawing decoration method (VSS) compatible with metal, glass, and resin