A completely new design of eyeglass frames with embellishments encapsulated in resin.
**Customer Development Needs** We received a request from a customer dealing with glasses and sunglasses for a proposal for eyewear frames with decorative features that are not conventional. **More Specific Requirements** They requested a decoration that is covered by resin, rather than traditional methods like transfer or painting. **Our Proposal** We applied our development technology of "inserting transfer decorative molded products to encapsulate the transfer decoration" to explore sheets that can withstand the material requirements for eyewear frames. We proposed the idea of "inserting sheet insert molded products again to encapsulate the decorative sheet in resin." The decoration was implemented on the sheets using methods such as inkjet printing and vapor deposition, and we repeatedly prototyped to ensure it could withstand insert molding, ultimately achieving the specifications. **Customer Evaluation** Not only were we able to create a design for glasses with decorations that are completely sealed from external exposure and free from concerns about deterioration, but we also received high praise after exhibiting at a global eyewear and sunglasses trade show.
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basic information
■Molding Method Sheet insert molding and re-insert molding ■Molding Resin Polyamide ■Compatible Molding Machine 110 tons ■Product Size Approximately 170mm × approximately 60mm × approximately 15mm ■Product Use Decorative sheet: Design application through inkjet, vapor deposition, etc. Secondary processing: Cutting and polishing into eyeglass frame shapes
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Applications/Examples of results
■Eyeglass and sunglass frames ■Tableware ■Accessories
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Company information
**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