Why Are Zipper Bags Revolutionizing Food Safety and Freshness?
2025-09-28
Wancai Plastic Industry (Shandong) Co., Ltd.'s industrial-grade zipper bags enhance food safety, keeping food fresher and providing superior food preservation. These zipper bags combine the convenience of resealability with antimicrobial barrier properties, extending the shelf life of food.
Main Advantages of Food Zipper Bags
They block oxygen and moisture from packaged food, keeping it fresh and moisture-proof, preserving its original flavor.The zipper can be opened and closed 5,000 times, allowing for multiple uses.Lighter zipper bags reduce resource consumption during transportation, saving costs.
Technical Specifications
Wancai’s Food-Grade Zipper Bags Certified compliant with FDA, EU 10/2011, and ISO 22000 standards
| Parameter | Standard Series | Premium Barrier Series | Retort-Safe Series |
| Material Structure | 3-Layer Coex PP/PE | 5-Layer PET/NY/EVOH/PE | PP/Aluminum/CPP |
| Zipper Type | Single-track reclosable | Double-lock hermetic seal | Pressure-resistant seal |
| Temp. Range | -30°C to 90°C | -40°C to 120°C | -40°C to 135°C |
| Seal Strength | ≥3.5 N/15mm | ≥5.0 N/15mm | ≥7.0 N/15mm |
| Printability | 8-color flexo graphics | HD rotogravure printing | Laser-etchable surface |
| Applications | Dry snacks, grains | Meat, cheese, coffee | Sous-vide, sterilization |
Food Applications
1. Zipper Bags for Meat: Extends food's shelf life by two to three times.
2. Zipper Bags for Desserts: Zipper bags can enhance the crispiness of baked goods.
3. Zipper Bags for Frozen Foods: Zipper bags can be resealed simply by tearing, making portion control easy.
4. Zipper Bags for Liquids: The dual-channel design provides a strong seal.
Zipper Bag FAQs
Q: How is contamination prevented during the production of zipper bags?
A: Zipper bags are produced in a Class 7 cleanroom, without contact with production workers. The barrier layer of zipper bags prevents the ingress of external contaminants such as dust and pathogens.
Q: How is the heat resistance of zipper bags?
A: Zipper bags can withstand temperatures of 121°C for 60 minutes and are reusable.
Q: Can zipper bags be used to store liquids?
A: The dual-channel design of zipper bags prevents liquids from leaking.
Q: Are zipper bags recyclable?
A: Nearly half of the material used in zipper bags can be recycled after use.
The future of food packaging: Next-generation zipper bags will be embedded with active intelligence: an edible coating will reduce plastic use; a built-in NFC chip will allow phones to record real-time temperature data to select the optimal food temperature; and self-repairing zippers will seal even minor leaks.
