Pouch Filling Machine

Liquid pouch filling machines handle a range of flexible pouch formats: Stand-up doypack (SUP): a bottom-gusseted pouch that stands upright on shelf. The most common retail liquid pouch format. Sizes 100ml–5,000ml. Used for juice, sauce, ketchup, baby food, laundry detergent, shampoo. Flat pouch (3-side seal or 4-side seal): simple flat sachets. Common for single-serve beverages, condiment portions, medical liquid. Sizes 10ml–500ml. Spout pouch: doypack with a resealable spout/nozzle. For premium beverages, baby food puree, adult drinks, liquid hand soap. Sizes 100ml–2,000ml. Pillow pouch (back-seal): cylindrical pouch with back seal. Common for water sachets and small sauce portions. The machine type (FFS vs premade) is chosen based on pouch format, production volume and material laminate structure.

FFS (form-fill-seal): the machine forms the pouch from a film roll, fills it, then seals and cuts it — all in one machine. Advantages: lower packaging material cost (film roll vs premade pouches); compact process (1 machine = forming + filling + sealing); high speed (60–200 pouches/min for pillow and flat pouches). Disadvantages: limited pouch shape options (mainly pillow and 3-side seal); pouch quality depends on machine setup. Best for: water sachets, juice pouches, single-serve condiment, high-volume production. Premade pouch filling: pouches are pre-made by a pouch manufacturer and supplied to the filling machine. Advantages: wide pouch format options (stand-up, spout, zipper, shaped pouches); consistent premium presentation; easy product changeover. Disadvantages: higher packaging material cost; separate pouch inventory management. Best for: premium retail products, stand-up doypack, spout pouch, small-batch production.

Liquid pouch filling machines handle thin to medium-viscosity liquids: water-thin liquids (water, juice, sports drinks, vinegar, alcohol — <500 cP): highest speed, best accuracy. Medium-viscosity liquids (sauce, ketchup, syrup, shampoo — 500–10,000 cP): standard piston or gear pump fill head; slightly reduced speed. Semi-viscous products (honey, condensed milk, thick gel — 10,000–50,000 cP with heated fill head): reduced speed, heated nozzle required. Particulate-containing products (sauce with seeds, jam with fruit pieces, soup with vegetables): requires wide-bore nozzle and piston filler; chunk size must be smaller than nozzle bore. Products not suitable for pouches: products requiring rigid container integrity (carbonated beverages require pressure-rated pouches); very high-viscosity products (>50,000 cP without heating); products incompatible with flexible film laminates.

Nitrogen (N₂) flushing replaces the headspace air inside the pouch with nitrogen gas before sealing. Since nitrogen is inert (non-reactive), it prevents oxidation of the product. Benefits: extends shelf life by preventing oxidative rancidity (oils, sauces) and colour degradation (juice, tomato products); removes oxygen that supports microbial growth (secondary preservation effect); can achieve low O₂ residual levels in headspace (with good machine setup and film barrier). How it works: (1) fill the pouch with product; (2) N₂ flush nozzle enters the pouch headspace and purges air; (3) pouch is sealed while N₂ atmosphere is maintained. Film material: for effective nitrogen flushing, the pouch film must have an excellent oxygen barrier layer (aluminium foil laminate, nylon/PE, EVOH laminate — OTR <5 cc/m²/day). Standard PE/BOPP film has poor O₂ barrier and makes nitrogen flushing ineffective.

Speed depends heavily on pouch format and fill volume. FFS pillow pouch (water sachet, 50ml–200ml): 80–200 pouches/min (high speed, small volume). FFS flat pouch, sauce (100ml–500ml): 40–100 pouches/min. Premade stand-up doypack (200ml–1,000ml): 20–60 pouches/min (loading and positioning takes time). Premade spout pouch (200ml–2,000ml): 15–40 pouches/min (spout insertion is complex). Multi-lane FFS for water sachets (10ml–100ml): 500–2,000 sachets/min total (multi-lane machines for very high volume). Speed is primarily limited by: seal dwell time (longer dwell = stronger seal but lower speed); fill volume (large fill = longer fill time per cycle); and pouch loading mechanism (premade pouch indexing is slower than FFS).

Semi-automatic premade pouch filler (50ml–1,000ml, 10–20 pouches/min): scope-based quotation. Automatic premade stand-up doypack filler (100ml–2,000ml, 20–60 pouches/min): scope-based quotation. Automatic premade spout pouch filler (100ml–2,000ml, 15–40 pouches/min): scope-based quotation. FFS pillow pouch machine (30ml–500ml, 60–200 pouches/min): scope-based quotation. Multi-lane FFS water sachet machine (10ml–100ml, 500–2,000 sachets/min): scope-based quotation. Complete pouch filling line with date coder and box packer: scope-based quotation. Contact us with your pouch format, fill volume and target speed for a quotation.