Application of Gelatin in Paintball
Application of Gelatin in Paintball Manufacturing
1. Shell Formation
Function: Gelatin is used to create the outer capsule (shell) of the paintball.
Why gelatin?
Moldable: It can be formed into seamless, spherical shells using rotary die encapsulation techniques.
Water-soluble: Dissolves in moisture over time, making it environmentally safer.
Biodegradable: Gelatin is derived from natural collagen (usually from bovine or porcine sources), making it eco-friendly.
2. Mechanical Properties
The gelatin shell must be:
Strong enough to survive handling, loading, and firing from a marker.
Fragile enough to break on impact, releasing the fill (typically polyethylene glycol with dye).
Gelatin offers the right balance of elasticity and brittleness for this dual requirement.
3. Food-Safe and Non-Toxic
Since paintballs are used in recreational sports and can occasionally be ingested or come into contact with the skin, gelatin provides a non-toxic, safe material for players and the environment.
Summary:
| Function | Benefit |
|---|---|
| Paintball shell material | Forms strong yet brittle capsule |
| Eco-friendly | Biodegradable and non-toxic |
| Safe for players | Food-grade gelatin is commonly used |
| Compatible with machines | Suited for rotary die encapsulation process |
Technical Considerations
Bloom strength (gelatin’s firmness) and viscosity must be carefully selected to produce consistent shell thickness and breakability.
Some manufacturers may blend gelatin with plasticizers or softening agents (like sorbitol) to fine-tune shell performance.
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