Matching only gauge and barrier when replacing an existing film
Packaging format
Fin-Seal / Pillow Bags
Pillow and fin-seal bags are formed from roll stock on horizontal or vertical equipment. Web width, repeat, coefficient of friction, hot tack, seal initiation, product drop and line conditions are central to performance.
PROJECT FOCUSThe package is formed on the line, so the line belongs in the specification.
Roll stock is formed and sealed on the line for products such as chips, bars, frozen foods, and single-serve items.
What the specification must resolve
What to confirm before production.
Web width, repeat, fin or lap seal, eye marks, product drop, coefficient of friction, hot tack and seal window influence whether a pillow bag runs cleanly. A visually similar film can behave very differently at production speed.
Key considerations
- HFFS or VFFS equipment
- Web width, repeat and eye-mark requirements
- Fin versus lap seal design
- Slip, stiffness, hot tack and seal window
Common applications
- Snacks
- Bars and confections
- Frozen foods
- Single-serve products
Where projects go off track
Confirm these details early.
Ignoring product contamination in the end seals
Changing slip, stiffness or sealant without a controlled line trial
01Product, fill and performance target
02Filling line, dimensions and material inputs
03Samples, trials, graphics and final approval
A common question
What information should I provide for a pillow-bag quote?
Current structure, web width, repeat, unwind, core and roll limits, line type and speed, seal conditions, product, target barrier and a sample roll or specification when available.
Experience Behind Packaging HQ
See the thinking applied in production.
These projects were personally led by Packaging HQ’s founder before Packaging HQ was established. They show how the same practical approach works under real production conditions.
Customer-reported results from specific projects. Results vary and are not guaranteed.01 / FOOD AND SNACKS
The Film Looked Right. The Ink on the Machine Told a Different Story.
How a reverse-printed high-barrier laminate stopped ink transfer, reduced cleaning downtime, and helped a packaged snack line run faster.
Cleaner production with lower film costRead the story ↗02 / NUTRITION BARSLeakers Had Become Part of the Production Process.
How a nutrition bar producer reduced leakers and rework by designing the sealant around the real conditions on its horizontal flow-wrapping lines.
More than $700,000 in estimated annual labor capacity recoveredRead the story ↗Continue the project
Connected packaging decisions
Let’s solve it together
Ready to discuss Fin-Seal / Pillow Bags?
Share the product, production details, and decisions you already have. We’ll focus on what is still open.