Granule Filling Machine Suppliers & Manufacturers

Granule filling methods and product suitability

Granule filling machines fill measured quantities of granular, pelleted, or flaked solid products into bags, pouches, jars, bottles, or cans. The correct filling technology depends on the granule size, uniformity, bulk density, fragility, and target fill weight. Multihead combination weighers are the standard for high-speed granule filling where fill accuracy is critical — they work by simultaneously weighing multiple individual portions and selecting the best combination to meet the target weight. They are ideal for snacks, nuts, seeds, coffee beans, dried fruit, and confectionery. Linear weighers (single or multi-head belt or vibratory) are used for granular food products at medium speed (10–40 bags per minute) where the product is more fragile or cannot run on a multihead weigher. Cup volumetric fillers use fixed-volume rotating cups to dose free-flowing, uniform granules (sugar, small seeds, plastic pellets) where high speed matters more than precise weight. Auger fillers can handle some small-granule or micro-granule products but are better suited to powders. For large-bag granule filling (25kg or 50kg sacks of rice, fertiliser, plastic granules, or animal feed), open-mouth bagging machines with linear weighers fill and seal preformed woven PP, paper, or PE bags at 300–1,200 bags per hour. For consumer-size pouches (50g–1kg), a VFFS machine combined with a multihead weigher is the standard configuration.

Container formats and integration

Granule filling machines serve a wide range of container formats. For retail consumer pouches (50g–1kg): a VFFS machine with multihead weigher, forming pillow pouches, gusset bags, or quad-seal bags from film roll; speeds of 30–100 packs per minute. For premade stand-up pouches (200g–5kg): a premade pouch filler with integrated multihead weigher or linear weigher; more flexible for pouch format changes but lower speed than VFFS. For bottles and jars (100mL–5L): a linear granule filler with volumetric cups or a linear weigher fills granules into containers on a conveyor; suitable for spice jars, protein powder tubs, and coffee canisters. For 25–50kg bags: open-mouth bagging machines or valve bag fillers using a linear weigher, net weigh, or gross weigh system; integrated with a bag sealing station (heat seal, sewn closure, or hot-melt glue) and a bag placement system. Integration considerations: for complete granule packing lines, the filling machine integrates with a metal detector (required by GFSI food safety standards for many products), a checkweigher, and downstream case-packing and palletising equipment. Specify: product name, granule size and shape, bulk density, fragility, target fill weight, container type, required accuracy, target speed, and whether food-grade materials and hygienic design are required.

Frequently asked questions