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Frequently Asked Questions

Find answers to common questions about Sunkey Packaging’s products, services, sustainability practices, and customization options. Get the information you need to make informed decisions.

Food Packaging

  • Q Can it provide joint R&D services?

    A It supports customer-customized R&D, such as customizing bag-making machines for extra-long self-standing zipper bags for Lilly.
  • Q Does it collaborate with universities or research institutions?

    A It has established a composite materials research center with Jiangnan University to jointly carry out new material R&D projects.
  • Q How is the secondary sealing problem of liquid foods solved?

    A Stand-up pouches are designed with nozzles, similar to shampoo stand-up pouches, enabling multiple openings and closings with leak-proof performance.
  • Q Are there packaging solutions for new foods (such as plant-based meat)?

    A High-barrier vacuum packaging is provided to delay oxidation and maintain texture, already applied to plant protein products.
  • Q Does the packaging comply with EU food contact material regulations?

    A Yes, products are certified by BRCGS and FSSC22000, meeting compliance requirements for global markets.
  • Q What is the composite technology for hygroscopic films?

    A Polymer composite technology with hygroscopic active agents dynamically regulates the internal humidity of the packaging.
  • Q What is the material structure of soybean nipple bags?

    A High-barrier PET/PA/RCPP, an eight-layer composite structure ensuring tightness and temperature resistance.
  • Q Are there packaging solutions for frozen foods?

    A High-barrier materials (such as PET/AL/PA/PE) support low-temperature environments as low as -40℃, preventing freezing cracks and oxidation.
  • Q Can food packaging technologies be applied to the pharmaceutical field?

    A Yes, for example, Cold Formed Aluminum films are already used for moisture-proof and light-proof pharmaceutical packaging.
  • Q How are quality issues handled?

    A Responses within 24 hours, solutions provided within 72 hours, with a full traceability system to ensure clear accountability.
  • Q Does it provide packaging usage training?

    A Yes, it provides operation guides and training services for automatic packaging machine adaptation, storage conditions, etc.
  • Q What are the future technical priorities for food packaging?

    A Improving the performance of degradable materials, developing smart packaging (such as humidity sensors), and optimizing lightweight design.
  • Q How does the company view the sustainable development trend in food packaging?

    A The company prioritizes the development of recyclable and degradable materials and responds to policies to promote the circular economy.
  • Q Can variable data be printed on the packaging surface?

    A Cold foil stamping technology is supported, enabling variable data decoration without plate-making to enhance brand recognition.
  • Q Does it support high-precision printing?

    A Digital enhancement printing processes are used to achieve high-end visual effects such as 3D stereoscopy and metallic textures.
  • Q Does it provide anti-static packaging?

    A Yes, the outer layer of industrial FFS films contains an anti-static layer, suitable for electrostatic-prone scenarios like chemical granules.
  • Q How is the drop resistance of packaging during transportation?

    A Soybean nipple bags pass a 4-meter drop test 6 times, and industrial FFS films have puncture and tear resistance.
  • Q What is the humidity control range for moisture-proof packaging?

    A Hygroscopic films can stabilize internal humidity at 30%-45%RH, extending the shelf life of dried food products.
  • Q How is packaging integrity ensured after high-temperature sterilization?

    A High-barrier materials (such as PET/AL/PE) are used, and integrity is verified through 121℃/40-minute sterilization tests.
  • Q Does the packaging support microwave heating?

    A Corn retort bags, soybean nipple bags, etc., all support direct microwave heating without unpacking.
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