Are you troubled by polarization distortion? → Eliminate retardation with STAR processing.
No need to change materials or molds. Our unique composite molding control fundamentally suppresses the polarization distortion of large transparent panels.
As manufacturers struggle with the quality issue of increased residual stress during the molding process, which leads to rainbow-colored distortions (retardation) visible through polarized sunglasses as the size of transparent panels increases, our uniquely developed "STAR treatment" is a technology that fundamentally suppresses residual stress by comprehensively controlling multiple molding parameters such as gate temperature, holding pressure, and injection conditions. Since it does not require changes in materials or modifications to molds, it can resolve issues while utilizing existing equipment and design assets. This technology achieves stable quality at mass production levels for applications with stringent optical properties, such as automotive displays, smartphones, and PC resin panels for tablets. We hope that manufacturers aiming to reduce non-conforming lots in polarized inspections, curb customer complaints, and improve yield will find this technology beneficial.
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- Suppression of retardation for large PC resin panels for in-vehicle displays - Improvement of polarization quality for transparent cover panels for smartphones and tablets - Quality stabilization of mass production panels for polarized sunglasses compatible products - Introduction of polarization distortion countermeasures into existing lines without material or mold changes
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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