All food-contact parts are made of 304/316 stainless steel. For corrosive or viscous materials, we offer options like Teflon or other food-grade anti-corrosion coatings on contact surfaces.
4-Side Seal Bag Packaging Solutions
4-side seal bags provide enhanced protection and a premium look with full-edge sealing. Our vertical form fill seal machines ensure tight, secure seals on all four sides—perfect for moisture-sensitive and fragile products.
Keywords: 4-side seal bag packaging machine, vertical form fill seal machine, VFFS machine, powder packaging machine, granular packing machine.
What is a 4-Side Seal Bag?
A 4-side seal bag (also called a pillow bag with gussets or fully sealed pouch) offers superior barrier properties and structural stability. It is commonly used for products requiring extra protection from air, moisture, or physical damage.
Key terms: 4-side seal bag, pillow bag, gusseted pouch, fully sealed pouch, protective packaging.
Recommended Packaging Machines
Machines and modules suitable for 4-Side Seal Bag packaging—choose based on pouch structure, filling method, and target output.
Keypack Intelligent Powder Pneumatic Packaging Machine
Powder pneumatic packaging machine for automated metering and packaging of fine powder materials. Features pneumatic filling system, vertical bag forming, and sealing at 20-40 bags/min. Suitable for food, pharmaceutical, and chemical powder packaging including milk powder, medicinal powder, and seasoning powder.
Keypack Intelligent Granule Pneumatic Packaging Machine
Granule pneumatic packaging machine for automated metering and packaging of granular materials. Features pneumatic filling system, vertical bag forming, and sealing at 20-40 bags/min. Suitable for food, pharmaceutical, and chemical granule packaging including candy, nuts, seeds, grains, and pharmaceutical granules.
Kunbupack Liquid Horizontal Seal Top Snd Bottom vertical packaging machine
Liquid horizontal seal top and bottom vertical packaging machine for automated metering and packaging of liquid materials. Features horizontal sealing system, vertical bag forming, and liquid filling at 20-40 bags/min. Suitable for food, pharmaceutical, and chemical liquid packaging including sauces, condiments, beverages, and mouthwash.
Kunbupack Granule Horizontal Seal Top And Bottom vertical packaging machine
Granule horizontal seal top and bottom vertical packaging machine for automated metering and packaging of granular materials. Features horizontal sealing system, vertical bag forming, and granule filling at 20-40 bags/min. Suitable for food, pharmaceutical, and chemical granule packaging including candy, puffed foods, nuts, and pharmaceutical products.
Kunbupack Powder Horizontal Seal Top And Bottom vertical packaging machine
Powder horizontal seal top and bottom vertical packaging machine for automated metering and packaging of powder materials. Features horizontal sealing, vertical bag forming, and automatic conveying at 20-40 bags/min. Suitable for food, pharmaceutical, and chemical powder packaging including milk powder, seasoning powder, and medicinal powder.
Typical Applications for 4-Side Seal Bag
Commonly packaged products:
Coffee beans | Powdered drinks | Rice & grains | Frozen vegetables | Snacks | Pet food | Flour | Sugar | Seeds | Chemical granules.
Why KEYPACK?
Why Choose Keypack Intelligent? We provide reliable, turn-key packaging solutions designed for your success. Our precision engineering minimizes waste and maximizes your uptime, while our global support network ensures seamless operation. We partner with you to deliver not just machinery, but lasting value and growth.
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Over a decade of experience
50000 m²
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Frequently Asked Questions
Are the machine materials food-grade compliant?
Are you a manufacturer or a trading company?
What certifications do your machines hold, and which markets have you exported to?
Which industries do your packaging solutions serve?
Do you offer full "Turnkey" projects and flexible equipment?
What after-sales support and quality guarantee do you provide?
How are installation and training provided?
What is the warranty? Are spare parts readily available?
Get a Custom Solution Quote
Send your requirements and get a layout suggestion.
Please provide:
Your product (power, liquid, granule; Specific products are better)Packaging format (e.g., pouch, bottle,can).
Target weight/volume.
Required speed (bags/min).
Film/material type.
Country of operation.Contact (Email/WhatsApp).
