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Mold with Special Cooling and Ventilation System for Preform Design with Reduced Weight Improving Design and Sustainability

Cilt: 1 Sayı: 1 30 Haziran 2025
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Mold with Special Cooling and Ventilation System for Preform Design with Reduced Weight Improving Design and Sustainability

Abstract

In the plastic packaging sector, the concept of sustainable production is gaining importance due to increasing environmental regulations and raw material supply challenges. Particularly, rising procurement and transportation costs of PET raw material in international markets have made energy efficiency and resource conservation in production a priority. In this context, this study presents the design of an innovative blow mold equipped with special ventilation and cooling systems, compatible with lightweight preforms. A new 500 cc PET bottle model was developed by reducing the current preform weight from 10 grams to 9 grams. Extensive improvements were made in the mold design to ensure that the lightweight preform could achieve the desired bottle shape under lower pressure. Specifically, the mold’s internal ventilation system was optimized to reduce required air pressure during the blowing process and accelerate the cycle. The number and placement of gas vent holes were revised based on analysis results. Additionally, dedicated cooling channels were developed to enhance internal cooling performance and improve temperature control during production. Structural analyses, temperature distribution assessments, and flow simulations were conducted, resulting in a mold design optimized both thermally and mechanically. The developed mold model was tested on the production line, where it was observed that the target bottle shape was achieved successfully at low pressure, along with a notable reduction in cycle time. Moreover, a significant decrease in energy consumption was recorded. The innovative aspects of this study include the development of a new lightweight-compatible bottle model, the integration of tailored ventilation and cooling systems, and improvements in energy efficiency. The technical gains achieved contribute not only to product quality and production efficiency but also to broader environmental sustainability goals. Furthermore, the engineering solutions introduced provide a solid foundation for future R&D and mold design projects.

Keywords

Blow molding , grammage optimization , pet preform , plastic injection mold , sustainability

Kaynakça

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Kaynak Göster

APA
Şahin, B., & Arslan, G. (2025). Mold with Special Cooling and Ventilation System for Preform Design with Reduced Weight Improving Design and Sustainability. Positive Science International, 1(1), 12-23. https://izlik.org/JA75EF22UM