Comprehensive Guide to Food-Contact Paper Packaging Containers
By: Angy Liu
Date: 2025-06-07
In today's pursuit of sustainable living, disposable kraft paper takeout boxes have swiftly become essential for urban lifestyles. Unlike traditional plastics, these boxes crafted from natural kraft paper boast earthy aesthetics and 100% biodegradability, embodying the eco-conscious philosophy of "sourced from nature, returned to nature."
Outstanding Product Features
I. Common Types and Material Characteristics
Modern food industry utilizes three main categories of paper-based packaging containers:
1. Liquid Containers: Bubble tea cups, disposable paper cups, paper bowls, paper meal boxes
2. Solid Food Packaging: Ice cream cups, potato chip canisters, pastry trays, bread paper bags, flour paper sacks
3. Cooking Aids: Steamer liner papers, baking parchment
Material Composition:
• Primary substrate: Food-grade base paper (kraft paper/cardboard)
• Special treatments by application:
① Liquid containers: Polyethylene (PE) coated for waterproofing
② High-temperature containers: Often use biobased coatings (e.g., PLA)
③ Breathable packaging: Designed with micro-perforations or ventilation openings
Label Information Checklist:
✓ Base material type (virgin paper/cardboard/kraft paper)
✓ Coating material (if applicable)
✓ Compliance standard code (e.g., GB 4806.7-2016)
✓ Temperature tolerance range
II. Science-Based Selection Guide
A. Scenario-Based Selection
1. Liquid Foods:
① Mandatory: Fully waterproof-coated products
② Check: Seam integrity and leak resistance
③ Recommended: Double-walled structures for insulation
2. Hot Solid Foods:
① Choose: Packaging with ventilation openings
② Fried foods: Oil-resistant treated paper boxes
③ Hot meals: Containers with integrated thermal insulation
3. Critical Considerations:
① Avoid printed rims/bottoms
(Safety zone: No printing within 15mm of rim / 10mm of base)
② Test rigidity: Should not deform when holding 90℃ water
③ Verify QS/SC certification mark (China’s mandatory food safety certification)
III. Safe Usage Protocols
Temperature Limits:
① Cold-drink cups (labeled ≤40℃): PROHIBITED for hot liquids
② Hot-drink cups: Must display maximum temperature rating
③ Microwave use: Requires explicit "Microwave-Safe" labeling
2. Critical Warnings:
① Packaging marked "Not for Direct Food Contact"
(e.g., fast-food tray liners) requires protective barriers
② Vibrantly printed items may contain migratable inks
③ Composite packaging (e.g., instant noodle bowls) MUST NOT be microwaved
3. Usage Recommendations:
① Avoid reusing single-use products
② Minimize prolonged storage of hot foods
③ Discard immediately upon leakage detection
