Most packaging problems that show up on the line were decided months earlier, when the machine was chosen. A powder that clouds the sealing area, a paste that drags through the filler, a tablet that chips on the way to the blister: these are rarely operator errors. They are mismatches between what the product does and what the machine was built to handle.
This guide walks through five common product types, what each one demands, and which machine formats usually suit it. Treat it as a starting point for a conversation with your supplier, not a final answer, because the details of your product always matter.
Powders look simple until you run them. Fine powders create dust, and dust in the seal area is one of the most common causes of leaking pouches. Some powders also pack down and bridge in the hopper, while others flow too freely and overfill.
Granules are easier to dose than powders because they flow well, but they bring their own issue: accuracy. Sugar, salt, seeds, detergent beads, and similar products vary in size and weight so a basic volumetric fill can drift.
Liquids are where the filler matters as much as the form fill seal machine itself. Thin liquids can splash into the seal, foaming liquids throw off the volume, and any dripping at the nozzle ends up as a weak seal or a messy pouch.
Pharmaceutical liquids add another layer. Dose accuracy for a sachet of oral solution is a clinical requirement, not just a cost question, so dosing technology deserves more attention than speed.
Think ointments, sauces, spreads, gels and cosmetic creams. They do not flow on their own; they leave residue, and they cling to anything they touch. A filler that works for water will starve or smear with a thick paste.
Solid dosage forms need protection and precision more than speed. Tablets can chip, capsules can crack, and moisture or light can degrade the product long before the expiry date.
Two products can both be called powders and need completely different machines. A free-flowing salt-like powder and a sticky, fine cocoa-style powder will not fill the same way, even though they have the same name. That is why the product type is only the first question.
When you ask a supplier for a recommendation, bring these details with you:
Sending this on day one saves weeks of back-and-forth, and it often prevents buying a machine that works well in the demo and badly in production.
Whatever the product, the best protection is a trial with your actual product and packaging material. A trial shows problems while they are still cheap to fix.
At Pactech Solutions, we work with HFFS, VFFS, flow wrap, thermoform and cartoning systems across pharma, FMCG, cosmetics and food. If you are unsure which format suits your powder, paste, or tablet, share your product details and target output with our team. We can help you shortlist the right machine and plan a trial before you decide.
