Your Trusted 4 Side Seal Pouch Manufacturer
As a leading four side seal pouch manufacturer in China, we combine advanced machinery with strict quality control to deliver durable, high-barrier packaging solutions tailored to your product needs.
What is a 4 Side Seal Pouch?
A four side seal pouch (also known as a quad seal pouch, full seal pouch, or four side sealed flat pouch) is a flexible packaging format where all four edges are heat-sealed. This creates a flat, leak-proof, and highly durable bag ideal for a wide range of products—from coffee and snacks to industrial powders and vacuum-sealed goods. Unlike stand-up pouches, these can be designed as flat lay-flat bags or quad seal bags with gusseted sides for added volume and shelf stability.
Quad Seal Bag
Premium 4-side seal design with expandable gussets. Excellent stand-up stability for retail shelves. Ideal for coffee, pet food, and bulk items.
- High Barrier Aluminum Foil
- Resealable Zipper
- One-Way Degassing Valve
- Custom Printing
Custom Quad Seal Coffee Bag
Specially designed for coffee roasters. With degassing valve and high-barrier film to lock in freshness and aroma for months.
- Aroma Protection
- Degassing Valve
- Matte Finish
- Recyclable Options
Four Side Seal Vacuum Bag
Flat, fully sealed pouches perfect for vacuum packaging meat, fish, cheese, and electronics. Superior oxygen and moisture barrier.
- Puncture-Resistant
- High Barrier PA/PE
- Smooth Surface
- Available in Rolls or Pre-Cut
Four Side Seal Sachet
Compact, single-use flat pouches for product samples, cosmetics, sauces, and pharmaceutical powders. Cost-effective and fully printable.
- Tear Notch
- Multi-Layer Barrier
- High-Speed Filling Compatible
- Small MOQ
Four Side Seal Pouch with Tear Notch
Perfect for condiment portions, sauce sachets, and liquid detergent samples. Easy-tear notch & leak-proof lamination.
- Precision Tear Notch
- Spill-Proof Seals
- Oil/Grease Resistant
- High-Speed Filling Compatible
Heavy-Duty Quad Seal Bag
Reinforced side gussets and thick films for industrial powders, chemicals, and fertilizers. Withstands up to 25kg bulk loads.
- Ultra-Strong Lamination
- Anti-Static Option
- Moisture Barrier
- Custom Handle Hole
Four Side Seal Bag with Hang Hole
Designed for pegboard retail display. Features a reinforced hang hole on a flat or quad seal pouch. Ideal for hardware, crafts, and snacks.
- Die-Cut Hang Hole
- Euroslot Option
- Clear Window Available
- Glossy or Matte Finish
Biodegradable Four Side Seal Pouch
Kraft paper laminated with compostable film. Offers a natural look with full barrier protection, certified to EN 13432.
- Compostable Certification
- Natural Kraft Texture
- Food-Safe Inks
- Resealable Zipper
See the 4 Side Seal Pouch Structure & Details Up Close
Get a closer look at the flat seal edges, material thickness, gusset expansion, and optional features like valves and zippers in this detailed product showcase.
Material & Structure Options for Four Side Seal Pouches
Choose from a wide range of materials and laminates to achieve the exact barrier properties, look, and feel your product requires. Our full seal pouch manufacturing line supports multiple structures.
Standard Barrier
PET/PE, PET/CPP, Matt OPP/PE — excellent moisture resistance, good for dry foods and powders.
High Barrier (Coffee Grade)
PET/Aluminum Foil/PE, PET/VMPET/PE — blocks light, oxygen, and moisture. Essential for coffee, tea, and sensitive food.
Vacuum Grade
PA/PE (Nylon/PE) — superior puncture resistance and high barrier for vacuum-sealed meat, fish, and cheese.
Eco-Friendly Options
Kraft Paper/PE, Recyclable Mono-Material PE, Compostable PLA/PBAT films for sustainable packaging goals.
Finishing Options
Glossy, Matte, Soft-Touch, or Frosted lamination. Hot stamping, spot UV, and embossing available.
Additional Features
Resealable zipper, tear notch, hang hole, Euroslot, degassing valve, transparent window, and child-resistant closures.
Technical Specifications for Four Side Sealed Flat Pouch
| Parameter | Specification |
|---|---|
| Pouch Type | 4 Side Seal Flat Pouch / Quad Seal Bag (with gussets) / Full Seal Pouch / Four Side Seal Sachet |
| Material Structures | PET/PE, PET/AL/PE, PA/PE, Kraft/PE, Matt OPP/PE, Compostable PLA |
| Thickness | 60μm - 150μm (customizable) |
| Size Range | Custom dimensions — from small sachets (5x5cm) to large quad seal bags (50x80cm) |
| Printing | Up to 11-color gravure printing, or digital printing for small batches |
| Closure Options | Heat seal, resealable zipper, tear notch, press-to-close |
| Certifications | ISO 9001, FDA, EU 10/2011, BPA-Free, Reach, Compostable EN 13432 on request |
| MOQ | 1,000 pcs (digital) / 10,000 pcs (gravure) |
| Sample Lead Time | 3-7 days |
| Production Lead Time | 10-25 days based on order volume |
Industry Applications for Quad Seal & 4 Side Seal Bags
From small coffee roasters to large industrial manufacturers, our four side seal bags and quad seal pouches serve diverse industries with tailored solutions.
Coffee & Tea
- Quad seal coffee bag with one-way degassing valve
- High-barrier aluminum foil to preserve aroma
- Matte or glossy premium finishes
- Available with tin-tie or zipper closure
Meat, Seafood & Cheese (Vacuum)
- Four side seal vacuum bag for extended shelf life
- High puncture resistance PA/PE structure
- Smooth, flat surface for clear product visibility
- Compatible with all major vacuum sealing machines
Snacks, Nuts & Dry Foods
- Quad seal bags for stand-up shelf presence
- Moisture barrier to keep products crisp
- Resealable zipper for consumer convenience
- Full-color printing for brand impact
Powders & Industrial Products
- Strong, leak-proof full seal pouch design
- Anti-static and moisture-proof constructions
- Suitable for detergents, fertilizers, chemicals
- Heavy-duty options for up to 25kg
Pharmaceutical & Healthcare
- Four side seal sachet for unit dosing
- Child-resistant and tamper-evident options
- High-barrier protection against moisture and oxygen
- Cleanroom manufacturing for sterility
Pet Food & Treats
- Durable quad seal bags for heavy contents
- Odor barrier to keep food fresh
- Resealable zipper and handle hole options
- Custom printed with vibrant, pet-friendly designs
Our Factory in Action
Take a virtual tour of our state-of-the-art facilities and see our commitment to quality firsthand.
How to Order Your Custom 4 Side Seal Pouch
Simple, transparent process from concept to delivery
Inquiry
Tell us your product, size, quantity, and material preferences.
Design & Quote
We provide a detailed quote and free design support.
Sample Approval
We produce a physical sample for your test and approval.
Production
Mass production with rigorous quality checks.
Shipping
Carefully packed and shipped via sea, air, or courier.
What Our Clients Say About Our Four Side Seal Pouches
"We switched to Ruihong for our quad seal coffee bags. The quality, print, and valve functionality are outstanding. Our customers love the freshness."
"As a meat processor, reliable vacuum bags are crucial. These four side sealed flat pouches are puncture-resistant and seal perfectly every time."
"The custom quad seal bags for our pet food brand look amazing on shelves. Great structure support and printing quality."
"We needed small four side seal sachets for our supplement samples. Ruihong delivered quickly with excellent barrier properties."
"Our frozen fruit packs rely on their four side seal vacuum bags. No leaks, no freezer burn—perfect for our supply chain."
"Outstanding service and quality. Our custom quad seal bags for protein powder have helped elevate our brand's perceived value."
Frequently Asked Questions About 4 Side Seal Pouches
A standard four side seal pouch is completely flat with seals on all four edges. A quad seal bag adds side gussets, allowing it to expand and stand upright, making it ideal for retail shelf display and larger volumes.
For digital printing, our MOQ is as low as 1,000 pieces. For gravure printing, the MOQ starts at 10,000 pieces due to cylinder setup costs. Contact us for an exact quote based on your design.
Yes, we specialize in four side seal vacuum bags using PA/PE or high-barrier laminates. These are suitable for vacuum sealing meat, fish, cheese, and other perishable foods. Our films are FDA and EU 10/2011 compliant.
Absolutely. Our custom quad seal coffee bags can be equipped with one-way degassing valves, tin-ties, and resealable zippers. We offer premium matte finishes and 11-color printing to match your brand perfectly.
Sample production takes 3-7 days. After sample approval, mass production takes 10-25 days depending on quantity and complexity. Shipping time is additional and depends on the method (express, air, or sea freight).
Get Your Custom 4 Side Seal Pouch Quote Now
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