Designed for industrial bulk storage applications requiring stringent environmental protection, this high-performance bag incorporates a proprietary PET/AL/PA/PE multi-layer composite structure. The engineered material system delivers optimized barrier performance, mechanical integrity, and chemical compatibility for sensitive industrial compounds.

1. PET Layer (Outer)

   • Material: Polyethylene Terephthalate (Polyester)
   • Function: Provides structural rigidity (ASTM D638), surface abrasion resistance, and printability for identification labeling.

2. AL Layer (Barrier)

   • Material: High-purity aluminum foil (≥99.5% Al)
   • Function: Imposes absolute impermeability to oxygen (O₂ Transmission Rate <0.1 cc/m²/day at 23°C/0% RH), water vapor (Water Vapor Transmission Rate <0.1 g/m²/day at 38°C/90% RH), and UV radiation (380–780 nm).
   • Compliance: Meets FDA 21 CFR 175.300 for food contact applications.

3. PA Layer (Reinforcement)

   • Material: Biaxially-oriented Polyamide 6 (Nylon 6)
   • Function: Enhances puncture resistance (ASTM D3787) and tensile strength (≥120 MPa) while maintaining flexibility under cyclic loading (ASTM D882).

4. PE Layer (Sealing)

   • Material: Low-Density Polyethylene (LDPE) with heat-sealant co-polymer
   • Function: Ensures hermetic sealing at temperatures ≥120°C (peel strength ≥1.5 N/15mm per ASTM F88) and chemical inertness per USP Class VI standards.

• Barrier System: Sequential material selection creates a tortuous diffusion path, achieving 10³* improvement in contaminant protection compared to single-layer alternatives.
• Mechanical Resilience: PA reinforcement layer provides 40% higher puncture resistance (ASTM D6891) and maintains dimensional stability under mechanical stress.
• Thermal Stability: Maintains integrity across a broad temperature range (-40°C to 80°C per ASTM D1922).
• Logistical Efficiency: Extra-large dimensions (customizable up to 2000 mm * 1500 mm) reduce palletization requirements by 30%.

• ISO 9001:2015 (Quality Management System)
• FDA 21 CFR 177.1520 (Food Contact Materials)
• RoHS 3 (Restriction of Hazardous Substances)

• High-purity chemical intermediates (pharmaceuticals, electronics-grade solvents)
• Moisture-sensitive powders (pharmaceutical APIs, food additives)
• Light-sensitive compounds (photoresist materials, agrochemicals)
• High-value industrial materials requiring extended shelf life

Technical Support Available
For material certifications, application-specific testing protocols, or customized layer thickness optimization, contact our technical department.

Partner with us to package your success. Contact us today to discuss your custom packaging requirements and request samples!