High-Efficiency Surface-Cooled Rapid Tooling Development for Injection Molding of Low-Density Polyethylene

Polymers, Год журнала: 2025, Номер 17(4), С. 468 - 468

Опубликована: Фев. 11, 2025

Epoxy resin filled with aluminum particles constitutes a polymer composite material commonly utilized in research and development departments to fabricate rapid tooling for prototyping new designs. This study developed aluminum-filled epoxy molds by incorporating surface-cooled cooling channels (SCCCs) enhance performance, validated through Moldex3D simulation experimental analysis. The revealed that 1 mm mesh size was balance accuracy efficiency, simulations revealing the complete filling of injection-molded product within 5 s. examines low-density polyethylene injection molding. reliable parameters include melt temperature 160 °C, mold 30 an pressure 10 MPa, heat dissipation time 20 These effectively minimize risk cracking while ensuring efficient SCCC demonstrates superior enhancing efficiency 58.7% compared conventional conformal channel. It reduces time, enhances production capacity, shortens delivery times. Additionally, it lowers energy consumption, carbon emissions, rate defects large-scale manufacturing. A mechanism after LDPE molding also proposed.

Язык: Английский

Large-Format Material Extrusion Additive Manufacturing for Circular Economy Practices: A Focus on Product Applications with Materials from Recycled Plastics and Biomass Waste

Sustainability, Год журнала: 2024, Номер 16(18), С. 7966 - 7966

Опубликована: Сен. 12, 2024

Additive Manufacturing has significantly impacted circular design, expanding the opportunities for designing new artifacts following economy principles, e.g., using secondary raw materials. Small-format 3D printing reached a broader audience of stakeholders, including end-users, when dealing with filament feedstocks from plastic and biomass waste. However, large-format extrusion-based additive manufacturing recycled remains challenging, resulting in limited applications awareness among practitioners. This work analyzes most relevant product material extrusion plastics waste feedstocks. It reviews case studies 2010 to mid-2024 materials academic research practical contexts. The were analyzed outline current situation trends plastics- biomass-based feedstocks, focusing on materials, manufacturability, impact aesthetics, application fields, products. Despite more consolidated sectors, technical granulate feedstock systems, transportation, are emerging. Academic distributed practices through printing. Practitioners exploiting different approaches design products, optimizing building times, costs, usage strategies, strengthening identity by highlighting circularity. Spreading specific expertise could enlarge range sectors as well foster real-world collaborations scaling-up. Thanks this work, synergies between contexts can be encouraged practices, detecting exploring scraps, categories, or processes future.

Язык: Английский