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Comprehensive Guide to Food-Grade Paper Packaging Safety Tests: Nanwang’s 14 Critical Examinations

Jul 26, 2025

In today’s fast-paced food service industry, paper packaging is gradually replacing traditional plastic packaging and becoming the mainstream choice due to its environmental protection, economy, and good user experience. However, did you know that a seemingly simple paper cup, a hamburger paper, or a takeaway paper bag may need to go through up to 14 professional tests to truly meet food-grade safety standards?

As China’s first listed paper packaging supplier, Nanwang has always adhered to the principle of “zero tolerance for food safety” and established the industry’s leading and most stringent food packaging safety testing system to fully protect consumer health and customer brand reputation.

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Nanwang’s 14 safety testing programs

1. Paper cup testing (applied to hot and cold beverage packaging)

  • Water resistance test: evaluate the sealing of paper cups by placing them in high-temperature liquids to verify their sealing
  • Ice cube test: simulate the structural stability of iced beverages under long-term low-temperature conditions
  • • Stiffness test: evaluate the overall support capacity of paper cups and measure the structural hardness to ensure proper support during handling and use
  • Dimension measurement: verify dimensional accuracy to ensure consistent manufacturing standards

2. Paper straw test (applicable to cold drinks and milk tea)

  • Immersion test: determine the durability of the material by soaking in liquid for a long time to avoid softening and deformation
  • Dimension verification: ensure that the precise diameter and length specifications of the straw meet the beverage container standards for optimal functionality

3. Hamburger paper test (for oil-proof packaging)

  • Quantitative detection: control the grammage of paper to achieve the best balance between strength and lightness
  • Wax coating quantification: check whether the wax layer is evenly distributed to improve oil-proof performance
  • Spot resistance test: observe the surface defect rate of the packaging
  • Ink penetration test: ensure that the printing ink does not migrate and does not affect food

4. Professional test for paper boxes/paper bags

  • Friction resistance test: simulate transportation and handling, test the wear resistance of printing, and evaluate the durability of patterns
  • Water immersion and fading test: evaluate the stability of ink in various liquid environments
  • Waterproof test: evaluate the water resistance of paper bags in humid environments
  • High and low temperature test: verify the performance stability of packaging under different climatic conditions

5. Printed finished product inspection

  • Abrasion resistance test: simulate repeated contact with users to ensure that the information is clear and does not fade
  • Water immersion and fading test: test the safety and stability of ink components, and further verify whether the printed materials are suitable for food contact
  • Ice grinding test: specially designed for “freezing-heating” scenarios, such as instant food packaging

Nanwang dual quality assurance system, full traceability

1. Advanced production technology

  • Apply environmentally friendly water-based inks and flexographic printing technology
  • All products are produced in 300,000-level GMP clean workshops

2. Core unit for standard formulation

  • Leading the drafting of the “Green Takeaway Paper Packaging Products Group Standard”
  • Participating in the revision of the “Paper Cup National Standard GB/T 27590”
  • Core developer of the “Paper Straw Group Standard”

Why choose Nanwang Food Packaging?

  • Safe and reliable: 14 tests build a “firewall” for food packaging
  • Green and environmentally friendly: 100% biodegradable materials to reduce environmental impact
  • Quality assurance: All products have passed multiple international certifications and are trustworthy
  • Technological innovation: Annual R&D investment exceeds 30 million yuan, leading the industry upgrade

Nanwang knows that every piece of food packaging carries the health and trust of consumers. We treat food safety with a scientific and rigorous attitude and build the strongest line of defense.

Whether you are a chain restaurant brand, a takeaway platform, or a coffee roaster, Nanwang can tailor paper packaging products that meet international food safety standards for you. Welcome to leave a message on the official website or contact us directly to obtain sample packages and quotation plans to start your road to upgrading environmentally friendly packaging!

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