Buyer and engineering answer centre

Flow-wrapping questions answered for buyers and engineers

Start with the decision you need to make, then follow the linked guide for the variables, evidence and next step behind the answer.

Published 30 July 2026 by Lancing Ltd.

Question-led resource hub Horizontal flow wrapping process and buyer guidance

Understand the process

Start with how the product, film and seals work together

These pages explain the core process and the measurements that connect a product to a usable pack format.

Horizontal form fill seal

Follow flat film through forming, the longitudinal seal, end sealing, cutting and discharge.

How a horizontal flow wrapper works

Product pitch and pack repeat

Relate product length, seal clearance, printed-film repeat and crimp-jaw timing.

Product pitch and pack length

Sustainable output

Separate cycle rate from wrapped packs, accepted packs and losses elsewhere on the line.

Flow-wrapper speed and output

Control the finished pack

Use film, atmosphere, coding and inspection as one pack system

These resources cover functions that are often described as options but must be engineered around the approved product, film and line sequence.

Film and sealing

Specify reel data, registration marks, seal formats and the production sealing window.

Film and seal formats

Gas flushing

Understand the difference between adding gas delivery and validating a modified-atmosphere pack.

Gas-flush project questions

Coding and inspection

Define print position, trigger timing, verification, pack tracking and reject confirmation.

Coding and inspection integration

Choose and prove the project

Move from enquiry to an accepted production format

Best starting page by buyer task
Current task	Start here	Evidence the page helps prepare
Compare machine categories	Flow-wrapping machines	Product route, listed model data and application boundary.
Prepare an enquiry	Buyer’s guide	Product, pack, film, output, infeed, interfaces and acceptance brief.
Compare commercial scope	Cost factors	Included equipment, responsibilities, evidence and exclusions.
Prove the application	Trials, FAT and SAT	Representative materials, run conditions and good-pack criteria.
Prepare the site	Installation requirements	Access, space, utilities, interfaces, people and materials.
Resolve a current fault	Troubleshooting	Symptom, timing, settings, samples and reproducible evidence.

Project-specific confirmation

Use the answer library to prepare a better technical conversation

Flow-wrapper suitability still depends on representative product, production film, the required finished pack and the equipment around the wrapper. Send that evidence for a machine recommendation.

Discuss your application Browse all technical guides

Pack format and dimensional questions