Chongqing Ruili Packaging & Printing provides custom high-barrier vacuum packaging bags. Made of multi-layer composite films, these bags remove oxygen inside the package to slow oxidation and microbial growth. They serve both food preservation and rust & moisture protection for industrial parts, suitable for domestic distribution and long-distance cross-border logistics. One-stop customization on size, material and printing is available.

1. Preservation Principle: Low Oxygen Isolation to Slow Deterioration

Vacuum packaging works by extracting air from the bag to form a sealed low-oxygen environment. It restrains aerobic mold and bacteria, and slows down oil oxidation, rusting, discoloration and flavor loss, greatly extending storage time.

Note: Vacuum packaging inhibits but does not kill microorganisms. Cooked food and fresh produce need refrigeration or freezing. Retort pouches can achieve commercial sterility for room-temperature storage.

2. Multiple Material Options for Food & Industrial Use

1. PA/PE Nylon Composite Bags (Clear Type) Food-grade, puncture-resistant and low-temperature resistant. Ideal for fresh meat, seafood, cured food, dry goods and ready meals. Transparent design for product display, fit for refrigerated and frozen supply chains.
2. Aluminum Foil High-Barrier Bags (Light-proof Type) PET/AL/PE structure with excellent oxygen, moisture and light blocking performance. Great for coffee, tea, powder and high-oil food. Also widely used for precision electronics and hardware parts to prevent rust and oxidation.
3. EVOH High-Barrier Films & Retort Pouches Heat-resistant for sterilization, suitable for ready-to-eat food stored at room temperature. For industrial use, it protects chemical raw materials and precision components against gas and moisture.
4. Embossed Channel Vacuum Bags With textured channels for smooth air extraction, compatible with external vacuum sealers. Popular for small e-commerce food packages.

3. Two Main Application Scenarios: Food Preservation & Industrial Protection

✅ Food: Fresh meat, seafood, cured meat, nuts, rice, tea, ready meals and cooked food. Reduce cold chain loss and retain original flavor. Supporting compliance documents for cross-border export. ✅ Industry: Hardware, bearings, circuit boards, sensors, machinery parts and powder materials. Block oxygen and moisture for rust-proof, oxidation-proof and dust-proof protection, suitable for warehouse storage and long-distance cross-border shipment.

4. Custom Services from Ruili Packaging

• Custom sizes: 3-side seal bags, stand-up pouches, roll films. Support sample trial and mass production.
• Custom printing: Gravure printing for brand logos, product descriptions and traceability codes.
• Thickness options: 16 丝 / 20 丝 / 24 丝 standard; heavy-duty puncture-resistant formula available for heavy parts.
• Combined packaging solution: Match with air column bags and outer cartons for full cross-border protection.
• Qualifications: Food-contact grade materials, supporting test reports for foreign trade and cross-border orders.

5. Selection Guide

• Frozen fresh food, need product visibility: Clear PA/PE nylon vacuum bags
• Light-sensitive goods, long shelf life, high-value materials: Aluminum foil vacuum bags
• Food requiring high-temperature sterilization: Retort pouches
• Hardware and precision metal parts: High-barrier aluminum foil bags, matched with anti-rust treatment
• Cross-border long-haul logistics: Thicker high-barrier structure to reduce leakage and moisture risk