Sachet Filling Machine

A liquid sachet filling machine uses VFFS (vertical form-fill-seal) technology: a continuous film web is formed into a tube, filled with liquid from above, then heat-sealed horizontally and cut to form individual sachets. The result is a small, single-serve or multi-serve sachet. A liquid pouch filling machine typically handles larger, premade pouches (stand-up doypack, spout pouch) with more complex formats. Key differences: sachet machine: VFFS, 1ml–500ml, up to 150/min per lane, multi-lane for high volume, mainly flat pillow-style sachet, low packaging cost. Pouch filler: premade pouches or larger FFS, 50ml–5,000ml, 15–60 pouches/min per head, wider format options (stand-up, spout, zipper), higher packaging cost but premium presentation. Sachet machines are best for: water sachets, single-serve condiment, pharmaceutical sachets, agricultural liquid, sample packs.

Multi-lane sachet filling means the machine runs multiple VFFS lanes simultaneously from a single film roll or multiple film rolls in parallel. Each lane operates independently: forms, fills, seals and cuts its own sachets. Total output = speed per lane × number of lanes. Example: 6-lane machine at 100 sachets/min per lane = 600 sachets/min total = 36,000 sachets/hr. Use multi-lane when: production requirement exceeds 100 sachets/min; floor space is limited (multi-lane is more compact than multiple single-lane machines); you want a single operator to oversee the entire sachet output; the sachet size is small (1ml–100ml) where high per-lane speed is achievable. For large sachets (200ml–500ml), single-lane high-speed VFFS (60–100 sachets/min) may be sufficient.

Sachet seal types for liquids: 3-side seal (back seal + 2 end seals): the film is folded around the product, sealed on the back and both ends. Creates a pillow-style sachet. Most common for water sachets, sauce portions, pharmaceutical sachets. 4-side seal: 4 individual heat seals on all 4 sides. Creates a flat, neat sachet. Higher packaging material usage but cleaner appearance. Common for premium condiment sachets, pharmaceutical sachets. Gusset/bottom seal: a flat-bottomed sachet that can stand up. Between a sachet and a small doypack. Seal quality requirements: for liquid sachets, seals must be liquid-tight under typical handling conditions (compression, temperature cycling). Seal strength is controlled by: heat seal temperature (120°C–180°C depending on film), seal dwell time, seal bar pressure and film quality. Poor seals are the main cause of liquid sachet leakage in production.

Sachet filling machines handle: water and thin beverages (water, electrolyte drink, juice — <100 cP): easiest and fastest. Thin sauces and condiments (soy sauce, vinegar, hot sauce, salad dressing — 100–2,000 cP): standard piston fill head at moderate speed. Pharmaceutical oral liquids (cough syrup, electrolyte solution, herbal extract — 100–5,000 cP): reviewed VFFS line with GMP materials. Agricultural liquids (pesticide, herbicide, fertiliser solution): requires chemical-resistant film and PVDF/PTFE fill system. Shampoo and personal care (1,000–10,000 cP): possible but at reduced speed; pre-heating recommended. Products NOT suitable for VFFS sachets: carbonated beverages (pressure would blow the seals); high-viscosity products (>10,000 cP without heating, flow is too slow for VFFS); hot-fill products above 80°C (requires special heat-resistant film).

Water sachet machine: designed specifically for pure water and beverages. Very high speed (100–200 sachets/min per lane). Simple thin-film (LDPE, 50–80 micron). Large multi-lane configuration (6–12 lanes for 1,000–2,000 sachets/min). Often includes UV sterilisation or ozone treatment inline for water purification. Sachet size typically 100ml–500ml (drinking water portion) or 5ml–20ml (flavoured water sachet). Standard liquid sachet filler: more versatile — handles water, juice, sauce, pharmaceutical. Mid-range speed (40–100 sachets/min). Thicker or composite film (BOPP/PE, PET/PE, aluminium foil). Smaller production scale (1–4 lanes). Does not include water treatment. Water sachet machines have a very low cost per unit but are purpose-built; standard fillers cost more per unit but handle a wider product range.

Single-lane VFFS liquid sachet machine (1ml–500ml, 40–100 sachets/min): scope-based quotation. 4-lane VFFS sachet machine (1ml–200ml, 160–400 sachets/min total): scope-based quotation. 6-lane water sachet machine (100ml–500ml, 600–1,200 sachets/min total): scope-based quotation. 12-lane high-speed water sachet machine (100ml–500ml, 1,200–2,400 sachets/min): scope-based quotation. GMP pharmaceutical sachet filler (single lane, reviewed): scope-based quotation. Complete sachet line with date coder, defect detection and carton packer: scope-based quotation. Contact us with your sachet volume, liquid type, number of lanes and daily production target.