High-Performance
3-Side Seal Pouches
The most economical and reliable flexible packaging solution. Providing airtight freshness protection for every product with flat surface display power and exceptional barrier properties.
Maximum Simplicity & Protection
As a professional manufacturer, we innovate in technology and design to deliver 3-side seal solutions that define market standards.
Optimal Cost-Efficiency
Simple structure with maximum material utilization. The ideal choice for high-volume, low-cost packaging without compromising quality standards.
Superior Sealing Integrity
Engineered to withstand high internal pressure. Perfect for powders, liquids, and niche industrial products requiring professional vacuum sealing.
Flat & Clean Branding
A completely flat surface without wrinkles. Ensures your brand logo and product specifications are presented perfectly with zero visual dead zones.
Custom Functional Features
Vacuum & Retort Ready
Engineered with high-performance PA (Nylon) composite structures. Supports industrial vacuuming and 121°C high-temperature retort processing to ensure long-term food freshness and safety.
Easy-Open Features
Prioritizing consumer convenience with standard Tear Notches or high-precision Laser Scoring. Guaranteed effortless opening in any environment without compromising barrier integrity.
Hanging Display
Optimized for retail visibility. We offer customizable Round or Butterfly holes, specifically designed for compact and organized presentation on supermarket pegboard displays.
Driven by "Quality First, Service Foremost" — Specialized for Food, Beverage, & Electronics.
Technical Specifications
Specialized standards for 3-Side Seal Bags, engineered by Sengelin Packaging for ultimate durability and barrier performance.
| Technical Item | Detailed Standards | SGL Packaging Advantages |
|---|---|---|
| Material Composition | PET/AL/PE, PET/NY/PE, BOPP/CPP |
Multi-layer high-barrier composite solutions. Special anti-corrosive inner films available for active chemicals or high-oil foods. |
| Sealing Width | 5mm - 15mm (Adjustable) | Precision heat-sealing technology ensures flat edges with zero false or leak sealing, effortlessly handling high-vacuum environments. |
| Corner Craftsmanship | R1.5 - R5 (Optional) | Precision die-cut rounded corners eliminate sharp edges, enhancing consumer safety and brand affinity. |
| Production Capacity | 15 High-speed 3-side seal lines | Our 6,000m² facility equipped with auto-cutting machines delivers millions of units daily, meeting urgent lead-time requirements. |
"Quality First, Service Foremost" — We continuously innovate in materials to help your brand stand out.
One-Stop Customization Services
Driven by “Quality First, Service Foremost,” we provide comprehensive flexible packaging solutions tailored to help your brand stand out.
Material Innovation
Customized composite structures including PET, AL, NY, and PE for optimal barrier performance and durability.
Professional Design
Engineering-focused technical support to optimize your stand-up pouches and rollstock films for competitive markets.
Elite Production
High-speed production lines specialized in eight-side seal bags and premium pouches with rigorous quality control.
Direct Dispatch
Factory-direct dispatch ensuring speed and transparency for food, beverage, and electronic industry partners.
Factory Strength &
Quality Assurance
Shenzhen Longgang Factory
Leveraging GBA supply chain advantages, our 6,000 m² standardized base provides integrated production from printing to slitting.
Rigorous Quality Control
- Sealing Pressure Test
- Peel Strength Test
- Residual Oxygen Detection
Physics Laboratory
For vacuum or retort applications, we simulate real-world environments through pressure and burst testing to ensure 100% leak-proof and damage-free logistics.
Countries served globally including professional partnerships across North America, Europe, and Southeast Asia.
High-stability supply for leading global brands with a mature export logistics system.
Ready to Get Your Custom Solution?
Select the path that best fits your needs and let Sengelin Packaging elevate your brand’s presence.
3-Side Seal Sample Kit
Includes vacuum & metallized materials to test our premium quality firsthand.
Instant Quote
Perfect for small sachets and sample production runs with fast turnaround.
Consult an Engineer
Expert advice on choosing the best material structure for vacuum sealing.