Coffee capsules are modern, convenient coffee products that pre-package a single serving of coffee powder and are widely used in home and commercial capsule coffee machines. Users simply insert the capsule into the machine, and the high-pressure extraction system quickly produces a standardized, flavorful cup of coffee, greatly simplifying the traditional pour-over or espresso brewing process.
Sealing foil is a special packaging material designed specifically for single-cup coffee systems. It acts as a sealing cap, maintaining the freshness of the coffee while ensuring clean and efficient piercing of the capsule during brewing.
Description
Yutwin New Materials supplies food-grade aluminum foil materials, specifically designed for food, beverage, and pharmaceutical packaging applications, meeting stringent food contact safety standards. The products offer excellent barrier properties, effectively preventing the effects of oxygen, moisture, and light on the contents, thereby extending shelf life and preserving the original flavor and quality of the product.
The Role of Aluminum Foil in Capsules
- Sealing Layer (Lidding Film)
Serves as the primary barrier sealing film for capsules, providing excellent protection against oxygen, moisture, and light while ensuring freshness and product stability.
- Capsule Shell (Structural Body)
Forms the rigid or semi-rigid container of the capsule, working together with the sealing foil to maintain integrity, compatibility, and safe product containment.
Material Performances
- Excellent Barrier Properties
Blocks oxygen, moisture, and UV light to preserve coffee aroma and freshness.
- Strong Heat Sealing Performance
Compatible with high-speed automatic sealing machines.
- Food-Grade Safety
Complies with food-contact material standards (FDA / EU regulations).
- Good Mechanical Strength
Resistant to wrinkling and deformation during filling, sealing, and transport.
Material Structure
Coffee capsule aluminum foil typically has a multi-layered composite structure designed to balance sealing performance, puncture resistance, and barrier protection.
- Aluminum Foil Layer (Core Layer)
Provides excellent oxygen, moisture, and light barrier properties.
- Heat-Sealing Coating (Inner Layer)
Ensures strong adhesion to the PP, PS, or aluminum capsule body during the sealing process.
- Printed Coating (Outer Layer)
Enables high-quality branding and protects the aluminum foil surface.
Common Specifications
| Item | Range |
|---|---|
| Alloy | 8011 / 1235 / 8079 |
| Thickness | 30–60 micron |
| Temper | O / H14 / H18 |
| Coating | Heat-seal lacquer (PE / PP based) |
| Printing | Gravure or flexographic printing |
| Width | Customized (based on capsule size) |