In-line slit rheometry for enhanced injection molding processes
A novel in-line slit rheometer designed for injection molding processes that enables accurate rheological characterization of polymer melts using standard equipment. This technology provides precise flow measurements under real processing conditions, crucial for optimizing molding operations.
Overview
This innovative in-line slit rheometer is engineered to enhance injection molding processes by providing accurate rheological characterization of polymer melts in real-time. Utilizing standard injection molding equipment, this device enables the measurement of transient shear viscosity under true processing conditions, significantly improving the understanding and optimization of the molding process.
Technical specifications
- Interchangeable molding blocks: Equipped with calibrated microchannels for precise flow analysis.
- Accurate temperature and pressure control: Ensures the integrity of measurements during heating and cooling phases.
- Miniature pressure sensors: Integrated with a data acquisition system to capture detailed flow information within 1.5 seconds.
- True flow curve plotting: Utilizes injection speed to determine various shear rates, overcoming limitations of conventional rheometry.
- Covers critical factors: Accounts for inertia, wall slip, non-isothermal flow, and plug flow, providing comprehensive flow data.
Technology readiness level
Currently at TRL 4, this technology has been validated in laboratory conditions and is set to be implemented and tested on industry-standard injection molding machines. Validation for PET materials is planned, with future integration into company R&D equipment.
About Case Western Reserve University
Case Western Reserve University is a comprehensive private research university anchored in Cleveland’s University Circle with a high‑intensity research enterprise. Its campus is co‑located with major hospital systems, giving industry partners access to clinical collaborators, regulatory know‑how, and real‑world validation environments. A large open‑access makerspace, shared core facilities, and an engineering co‑op program connect companies to rapid prototyping, testing, and talent pipelines. Research is supported by competitive federal funding from agencies such as NIH, NSF, DOE, and DoD. A dedicated technology transfer office, working with corporate engagement and entrepreneurship programs, supports IP strategy, licensing, sponsored research, and startup formation.
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