Fin-Seal & Flow-Wrap Pouches
High-speed pillow packs for high-volume products.
Fin-seal (pillow) pouches form around your product on high-speed flow-wrap and VFFS lines — a back fin seal and two end seals produce the fastest, most economical wrapped format in the industry.
Dissected: the anatomy.
Every numbered component below is a decision point we engineer around your product, your filling process, and your customer.
- 1End sealsTop and bottom crimp seals close each package at line speed.
- 2Tear entrySerrated crimps or notches give customers an easy opening point.
- 3Back fin sealThe longitudinal seal running down the back — the format's signature closure.
- 4Wraparound printContinuous graphics around the full circumference of the package.
- 5Registered filmEye-marked rollstock keeps every package's graphics perfectly positioned.
Why brands choose this format.
Fastest format in packaging
Flow-wrap lines run at speeds no premade format can match — economics that win at volume.
Snug product fit
The film forms around the product — minimal excess material, clean presentation.
Single-serve champion
Bars, candies, and unit-portion products are flow-wrap's home territory.
Multipack ready
Individually wrapped units bundle cleanly into bags, boxes, and club packs.
Barrier options
From economical OPP to high-barrier laminations for sensitive products.
Supplied as rollstock
Delivered as printed roll film specified precisely to your wrapping equipment.
Is this the right format for you?
An honest fit check — and where to look if another format serves your product better.
- ✓Bars, candies, and single-portion products at volume
- ✓Brands running flow-wrap or VFFS equipment
- ✓Multipack programs needing individually wrapped units
- ✓High-volume SKUs where unit economics decide winners
- →No wrapping equipment — premade pouches need only a sealer — see Flat Pouches
- →Product needs to stand on a retail shelf solo — see Stand-Up Pouches
Not sure? Book a consultation — we’ll match the format to your product, not the other way around.
How flow wrap works
Printed film feeds off a roll, forms into a tube around your product, seals along the back fin, then crimps and cuts at each end — one continuous motion at hundreds of packages per minute. Because the machine reads printed eye marks to position every cut, the film must be engineered to your wrapper's specs: web width, repeat, registration, and sealant. That's rollstock engineering, and it's exactly what we do.
Let’s engineer your fin-seal project.
Tell us about your product, timeline, and goals — the Microflex team will review your project and walk you through structure, materials, and next steps.