The application of silicone oil on hot water bags is mainly for facilitating demolding, preventing adhesion and aging, improving the feel and water repellency. This is particularly common in rubber and silicone hot water bags. Here, we will break it down into the core reasons and inspection points for you.
Core function
Essential for demolding (process necessity)
Forms a protective film on the mold surface during vulcanization, preventing rubber/silicone from sticking to the mold and ensuring the integrity, smoothness of the finished product and no damage to the mold.
01
Anti-sticking and anti-aging
Forms a low surface tension protective film, reducing sticking and residue; enhances weather resistance and heat stability, delays aging, and maintains a flexible feel.
02
Skin-friendly, hydrophobic, easy to clean
We propose industry-leading solutions to ensure production safety by calculating each parameter of the system,reasonably selecting distribution protection devices,and adopting a microcomputer protection system for comprehensive monitoring and control.
03
Safe and compliant
Generally uses food-grade/medical-grade silicone oil, combined with qualified base materials, it is safe for human use during normal use.
04
Why is rubber/silicone necessary?
Rubber hot water bag
Essential for vulcanization and demolding, while also enhancing surface smoothness and aging resistance.
Silicone hot water bag
Commonly used for surface treatment, balancing demolding, hand feel and safety.
Practical Tips for Foreign Trade/Inspection
Just look for uniformity, no oil stains, and no migration. A slight residual of silicone oil on the surface is normal; overly thick or greasy silicone oil may affect subsequent printing/labeling.
For exports to the EU, it is recommended to choose food-grade/silicone oil that complies with FDA standards to ensure compliance.
