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May 17,2025In the paper cup production industry, functional coatings like PP, PE, and PLA films are indispensable for creating high-performance products. Paired with advanced paper cup machines, these materials transform ordinary paper substrates into versatile containers. But how exactly do they work, and what value do they add to final products?
What Are PP Film, PE Film, PLA Film, and Aqueous Coatings?
PP Film: A polypropylene film known for its heat resistance and durability.
PE Film: Polyethylene film offers flexibility and moisture barrier properties.
PLA Film: Made from polylactic acid, it’s a biodegradable alternative, eco - friendly.
Material Selection Guide for Manufacturers
| Application | Recommended Film | Machine Compatibility |
|---|---|---|
| Hot Beverages | PP Film | High-temp sealing units |
| Cold Drinks | PE Film | Standard lamination |
| Eco-Conscious Brands | PLA Film | PLA-optimized systems |
Why Use These Materials in Paper Cups?
Modern paper cup machines precisely laminate these films to paper stock, enabling:
- Heat Resistance (PP): Critical for automated filling lines handling hot coffee/tea (90-95°C)
- Liquid Protection (PE): Essential for carbonated beverages and iced drinks requiring 4-8hr leak-proof performance
- Eco-Friendliness (PLA): Meets BPI/ASTM D6400 standards for commercial composting
When to Use Each Material?
For coffee and tea cups, PP film is preferred. PE film suits cold drink cups and those with liquid contents. PLA film is best when sustainability is a priority, like in cafes promoting green initiatives.
How to Use and Purchase These Materials?
When purchasing, consider the required thickness, width, and specific properties (e.g., heat resistance). For use, these films are usually laminated onto the paper cup, while aqueous coatings are applied through spraying or roll - coating processes.
When sourcing materials for paper cup machines:
- Verify film thickness (18-35μm) matches machine lamination parameters
- Ensure roll widths align with cup blank dimensions (standard 650-820mm)
- For PLA films: Confirm machine temperature controls (≤160°C melting point)
What Results Can You Expect After Using These Materials?
Using these materials ensures paper cups have better functionality, whether it’s heat resistance, moisture protection, or enhanced appearance. Additionally, the use of eco - friendly materials like PLA film can boost a brand’s reputation, attracting more environmentally - aware customers.
