In the plastics industry, moisture causes two distinct but equally costly problems: condensation on injection and blow moulds during production, and moisture absorption by plastic granules in storage and conveying systems. DST desiccant dehumidifiers solve both — allowing lower mould temperatures, faster cycle times, and consistent raw material quality throughout the production process.
Plastic moulding operations depend on precisely controlled mould temperatures. Chilled moulds allow components to form and release faster — but when the mould surface temperature drops below the ambient dew point, condensation forms. This “sweating” causes surface defects, watermarks, and corrosion on mould surfaces and guide pins, leading to rejected parts and increased maintenance.
The conventional fix — raising mould temperature — reduces the condensation risk but also increases cycle times and cuts output. A DST dehumidifier offers a better solution: by lowering the ambient dew point below the mould surface temperature, condensation is eliminated entirely, even at mould temperatures as low as 5°C. The result is faster cycle times, higher output, and consistently defect-free parts.
At the same time, plastic granules stored in silos or transported through pneumatic conveying systems absorb moisture from the surrounding air — causing granule sticking, conveyor blockages, and quality problems in the final product. DST systems supply dry air directly to silos and conveying systems, preventing moisture uptake from storage through to production.
See how DST desiccant dehumidification systems are integrated into plastic production environments — from injection and blow moulding halls to granule silos and mould storage rooms. Our solutions eliminate condensation, protect equipment, and help production teams achieve consistent output quality year-round.
DST supplied humidity control for Mitsubishi Plastics’ production facility in Japan, protecting plastic manufacturing processes from moisture-related quality and production issues.
DST supplied plastic raw material storage dehumidification for Legoland in Billund, protecting polymer granules and materials from moisture ingress during storage.
Multiple DST installations for Nihon Spindle Manufacturing across plastic production and electronic component areas, maintaining stable humidity conditions across precision manufacturing environments.
DST has been supplying humidity control solutions to the plastics industry since the early 1990s — across injection moulding halls, blow moulding facilities, granule silos, and mould storage rooms across Europe and Asia. All systems are configured to the required humidity setpoint, mould temperature, and production environment of your facility.
Get notified about new DST articles
EN
SV