Cold seal packaging machine

A packaging engineer once told us cold seal feels like cheating. The line runs cooler, you do not warm anything up before you start, you do not waste packs during a heat-up cycle, and the seal you get back is more consistent because pressure is the only variable in play. That is the practical case for the technology, before any of the energy and recyclability arguments.

What a cold seal packaging machine actually does

Cold seal uses a specialised adhesive that bonds under pressure alone. No heating element, no temperature ramp. The blister sits between two paperboard layers, the press closes, and the wallet is sealed. We invented the technology for pharmaceutical packaging in the 1990s, and it now runs about 90% of the blister volume on our floor.

Why customers pick it over heat seal

• Up to 80% less energy than an equivalent heat seal line.
• No thermal exposure for the API, which matters for temperature-sensitive molecules.
• No warm-up cycle. The line is ready when you start it, and there is no batch of waste packs at the front of every run.
• Pressure is the only sealing variable, so the seal profile is more stable than heat seal where temperature and time both move around.
• The output ends up recyclable: paperboard wallet, water-based solvent-free adhesive, and a paper-blister combination where the molecule allows it.

When cold seal is the right call

Most pharma blister formats, particularly heat-sensitive APIs, child-resistant wallets and clinical trial work where the line changes formats frequently. Also a strong fit for medical device secondary packaging. Where customers still want a traditional aluminum-foil thermoform format that depends on heat sealing, heat seal stays the right answer. We run both.

The portfolio in one paragraph

Manual shuttle machines for prototypes and small clinical batches, semi-automatic rotaries for mid-volume commercial work, fully automatic inline machines for high-volume runs and multi-panel wallets. Format changes in minutes on the manual end, IQ/OQ/PQ validation across the whole range, FMD serialization integrated on every line.

Either run on our floor, or your own

Customers come to us in two flavours. The first wants the machines themselves and brings the line in-house. The second wants the work done and uses our secondary contract packaging service. Either route is fine. We have done both since 1996.

Sizing this up for your own line, or weighing it against heat seal? Send us the project, or request a wallet sample from our cold seal output.