Introducing various molding techniques such as "heat & cool molding" and "gas assist molding."
We would like to introduce the "Main Molding Techniques" handled by Rihwa Sangyo Co., Ltd. We offer a variety of molding techniques, including "Heat & Cool Molding," which eliminates weld lines, "Gas Assist Molding," which prevents sink marks even in thick products, and "In-Mold Molding," which performs heat transfer within the mold during injection molding. 【Molding Techniques】 ■ Heat & Cool Molding - Eliminates weld lines - Improves mold transferability, allowing for glossy molding ■ Gas Assist Molding - Prevents sink marks even in thick products - Reduces dimensional changes due to secondary shrinkage ■ Compression Molding - Applies uniform pressure, resulting in uniform resin density and reduced warping - Reduces internal stress due to minimal molecular orientation *For more details, please refer to the PDF document or feel free to contact us.
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【Other Molding Techniques】 ■ In-Mold Molding - Multi-color printing decoration simultaneous with injection molding - No warping or distortion due to re-heating ■ Foam Molding - Easy molding for thick areas (shrinkage countermeasures) - Improved vibration damping, usable for shock absorption applications *For more details, please refer to the PDF materials or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Rihwa Sangyo Co., Ltd. is a company that comprehensively supports everything from development and manufacturing to supply in various fields such as plastics and industrial materials. In addition to general-purpose plastics, we also provide products that meet market needs, including proposals for product development utilizing environmentally friendly resins.