Founded in 2002, BAOD EXTRUSION (Jiangsu Baodie Automation Equipment Co., Ltd.) is a premier high-tech enterprise dedicated to the research, development, engineering, and manufacturing of high-performance plastic extrusion systems. Our technological lineage traces back to 1999 when our parent entity, KINGSWEL GROUP, brought 18 years of pioneering Taiwan-based design experience to establish a world-class manufacturing center in Shanghai. In the decades since, BAOD has become a benchmark for custom extrusion technology in the global market.
Over the past 25 years, our R&D focus has remained steadfastly directed toward four core technological pillars: ultra-precision control, high-efficiency throughput, highly automated process integration, and comprehensive machinery safety. With a 16,000 m² modern manufacturing hub and a highly skilled workforce of over 100 professionals, we continuously push the boundaries of polymer extrusion.
Co-extrusion is a highly specialized manufacturing process that combines two or more different polymer formulations into a single, continuous profile structure. In the field of PVC (Polyvinyl Chloride) profile manufacturing, co-extrusion is primarily utilized to merge rigid PVC (uPVC) with flexible, elastomeric PVC (pPVC). By feeding these distinct materials into a single co-extrusion die head, manufacturers can produce components with structural load-bearing capacity on one side and compliant sealing properties on the other.
In a typical dual-durometer PVC co-extrusion line, two extruders run concurrently: a primary extruder processes the rigid compound forming the structural base, while a secondary co-extruder processes the soft compound forming the seal, lip, or aesthetic finish. The key to successful co-extrusion lies in the co-extrusion crosshead die design. BAOD's custom-engineered die manifolds ensure that both polymer melts meet at the precise zone of heat and shear, allowing molecular cross-linking to occur before exiting the die profile. This forms a permanent mechanical and chemical bond that prevents material separation under stress.
Modern engineering demands multi-functional performance from components. PVC co-extrusion profiles provide significant advantages over single-compound alternatives:
To produce precision co-extruded profiles, the entire extrusion line must be synchronized. BAOD designs complete, automated co-extrusion solutions which include: twin-screw or high-torque single-screw extruders, proprietary co-extrusion tooling with custom thermal management zones, high-efficiency vacuum calibration tables, servo-driven belt pullers with non-marking pads, and synchronized in-line cutting systems (from rotary fly-knives to follow-up saw blades). This cohesive system guarantees dimensional stability, linear speed synchronization, and minimized waste.
In today's highly competitive industrial landscape, purchasing departments and product development managers at global enterprises are faced with multi-faceted supply chain challenges. High quality must be paired with cost efficiency, rapid prototyping, and scalable manufacturing capabilities. Sourcing PVC co-extrusion profiles and profile extrusion machinery from China, and specifically from Jiangsu Baodie, provides distinct structural advantages:
Our facility is located in Jiangsu, adjacent to Shanghai, positioning BAOD within the world's most concentrated chemical and polymer resin supply hub. This guarantees immediate access to specialized PVC compounds, eco-friendly calcium-zinc stabilizers, plasticizers, and custom color masterbatches, minimizing material costs and transit times.
Co-extrusion requires extremely precise tooling designs. Our in-house engineering and tooling division utilizes state-of-the-art CNC machining and wire EDM technologies. This integrated capability allows us to rapidly iterate die designs, reduce sampling lead times from months to weeks, and deliver customized profiles to market significantly faster.
BAOD aligns all production processes with global quality standards. From raw material batch testing (rheological analysis, moisture control) to post-extrusion dimensional validation using optical comparators and mechanical tensile testing, we ensure every production run meets the highest standard of international repeatability.
When engineering and sourcing departments evaluate co-extrusion production systems or profile products, they evaluate key metrics to reduce project risk. BAOD addresses these requirements directly:
Custom PVC co-extrusion profiles serve as vital components across a multitude of industries worldwide. As localized regulations push for higher efficiency, safety, and durability, the design of these profiles continues to evolve. Below are the primary application scenarios and the industry trends driving development into 2026 and beyond.
Discover our line-up of custom-engineered plastic extrusion lines, designed for high precision, automation, and long service life.
From April 21–24, CHINAPLAS was successfully held at the National Exhibition and Convention Center (Shanghai, Hongqiao). BAOD EXTRUSION showcased its latest R&D achievements at Booth 7.1C04, presenting "Smart Extrusion & High-Efficiency Innovation" solutions that garnered international acclaim.
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Deep dive technical answers to critical questions regarding polymer co-extrusion technology, tooling designs, and production workflows.
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