[Edaily Reporter Kwon Oh Seok ] WOOJIN PLAIMM CO., LTD(049800), a company specializing in injection molding machines, announced on the 15th that it is significantly enhancing its capabilities to address domestic and international plastic environmental regulations by leveraging its proprietary eco-friendly injection molding technology. The company plans to actively support its clients’ transition to eco-friendly manufacturing systems by focusing on reducing raw material usage, lightweighting products, utilizing recycled materials (recycled resins), and applying alternative materials such as biomass.

Recently, the global paradigm for plastic regulations has been rapidly tightening, moving beyond simple waste recycling to mandate the use of recycled materials from the product production stage and reduce raw material consumption itself. Within the industry, securing technology that maintains a product’s inherent quality and strength while increasing the proportion of recycled materials has emerged as an urgent priority.
This is because recycled materials exhibit greater variations in physical properties compared to virgin materials and are more difficult to control in terms of appearance quality, making it challenging to guarantee consistent quality as the proportion of recycled materials increases. Consequently, injection molding technologies that preserve physical properties while using recycled resins, as well as technologies for raw material reduction and weight reduction, have emerged as key competitive advantages in the market.
In line with these market demands, WOOJIN PLAIMM CO., LTD offers a comprehensive package that includes: △ raw material reduction and weight reduction through low-pressure micro-physical foaming (Super-Foam) technology; △ enhanced adaptability to recycled resins based on Layer-Injection technology; and △ molding solutions for biomass wood flour resin (CXP).
First, “Super-Foam” is a low-pressure physical foaming process that injects nitrogen gas during the resin melting process to form microscopic internal bubbles. It significantly reduces the product’s density and weight, effectively reducing the amount of raw material required to produce parts of the same shape.
Taking this a step further, “Clean-Foam” is a hybrid process that combines physical foaming technology with core injection (dual injection). The product’s surface layer is finished with a solid material to maintain an elegant surface quality, while the internal core layer is formed with a foamed structure to achieve weight reduction. A wide range of materials—including not only virgin resin but also recycled resin, heterogeneous resins, and glass-fiber-reinforced (GF) resin—can be applied to the internal core layer in various ways.
WOOJIN PLAIMM CO., LTD jointly developed this technology with a global automaker and has implemented it in actual mass production; the company is expanding its application to automotive components where weight reduction is essential, such as cockpits, door modules, and seats.
In addition, the company is accelerating the adoption of biomass materials to replace petroleum-based raw materials. CXP is a non-toxic wood flour resin that has been made thermoplastic by removing the bound water from wood powder and can be injection molded just like conventional plastics. WOOJIN PLAIMM CO., LTD is supporting the expanded industrial application of alternative materials by supplying customized injection molding machines optimized for the characteristics of this material.
A WOOJIN PLAIMM CO., LTD official stated, “Global environmental regulations on plastics are increasingly demanding the use of recycled materials, raw material reduction, and product lightweighting,” adding, “Based on micro-physical foaming, the application of recycled materials, and eco-friendly alternative material molding technologies, we will provide close support to help our domestic and international clients transition to eco-friendly manufacturing and comply with global regulations.”