Paper Cup Classification by Function: Material Properties and Temperature-Specific Applications

Paper cups are primarily categorized into three types based on their intended use and material composition, each with specific temperature limitations. Improper usage may pose health risks:

❶ Cold Drink Cups (Wax-Coated)

• Application: Exclusively for beverages below 40°C (e.g., iced coffee, juice)

• Restrictions:

Food-grade wax coating melts above 40°C, potentially contaminating drinks;

Industrial-grade paraffin (containing carcinogens) presents higher health hazards.

• Identification: Smooth wax-like surface texture, typically labeled "For Cold Beverages Only" or "≤40°C"

❷ Hot Drink Cups (PE/PP-Laminated)

• Application: Hot beverages (PE laminate withstands 100°C; PP laminate withstands 130°C)

• Usage Prohibitions:

❌ Cold liquids: Condensation causes structural softening and deformation

❌ Alcoholic drinks: High permeability may dissolve laminates/inks, releasing toxic compounds

❌ Hot oil (>100°C): Exceeds material thermal stability limits

• Pre-use Protocol: Initial rinse with boiling water (5 minutes) to remove residual substances

❸ Dry Food/Ice Cream Cups (Uncoated)

• Application: Non-liquid foods (ice cream, popcorn, fried chicken)

• Critical Restriction: Liquid containment prohibited due to absence of waterproof barrier

⚠️ Cross-Usage Hazards:

Hot cups with cold liquids → Structural deformation → Spillage/scalding risk

Cold cups with hot liquids → Wax dissolution → Potential hepatorenal toxicity with chronic exposure

✅ Safety Guidelines:

Verify manufacturer's usage labeling (e.g., "For Hot Beverages Only")

Strictly adhere to designated applications

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