Hot air shrink tunnel for heat shrinking a shrink label, method for heat shrinking a shrink label, and heat shrinking device for heat shrinking a shrink label
The hot air shrink tunnel with integrated humid and dry air zones addresses the challenge of uniform heat transfer and energy efficiency, achieving effective shrinkage and dry final products for complex container surfaces.
Patent Information
- Application Number
- JP2024552713
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-03-16
- Filing Date
- 2022-10-14
- Publication Date
- 2025-04-11
AI Technical Summary
Existing hot air shrink tunnels face challenges in achieving uniform heat transfer for shrink labels on containers with irregular surfaces or undercuts, while also being energy-efficient and ensuring dry final products.
The proposed hot air shrink tunnel incorporates a combination of humid and dry air zones, where the humid air zone uses heating means and water diffusion to create an air-vapor mixture, and the dry air zone uses heating to ensure efficient heat transfer and drying without the need for high-energy steam.
This solution allows for efficient heat transfer and shrinkage of shrink labels on complex surfaces, reduces energy consumption by using electrical energy instead of fossil fuels, and ensures dry products, thereby overcoming the limitations of traditional hot air and steam tunnels.