The Role of Multi-Head Weighers in Reducing Material Waste

In packaging, material waste appears in two forms: giveaway (over-filling) and underweight rejects. For expensive products such as nuts, dried fruit, coffee and snack mixes, even 2–3 g of average giveaway per bag adds up to tonnes of lost product every year. Multi-head weighers solve this problem by combining the weighing power of many scales in one cycle.

How Combination Weighing Works

A multi-head weigher distributes the product across 10–16 individual weigh hoppers. At each cycle, the control system tests all possible combinations of hoppers and selects the combination whose total weight is closest to the target without going under. Because it chooses from many combinations in milliseconds, the weigher reaches the target weight with far less giveaway than a single-scale system.

The Waste-Reduction Impact

• Lower giveaway: average bag weight approaches the nominal target, cutting product giveaway to a fraction of conventional systems
• Fewer rejects: combination selection prevents underweight bags, reducing rework and repacking
• Speed with accuracy: up to 60–120 weighments per minute without sacrificing precision
• Consistent quality: every bag meets the declared weight, protecting customer trust

Link Integration

Link Machinery integrates multi-head weighers directly with its VFFS and bagging machines. The weigher and packaging machine controllers synchronize in real time: the discharge opens only when the bag is formed and ready, eliminating spillage between stations. Products ranging from potato chips to beans, pasta and frozen vegetables run with accurate, waste-free results.

Real-World Results

On snack lines, Link multi-head weigher systems routinely hold average giveaway below 1 g per bag while running at full production speed — turning product savings directly into profit.

Contact Link Machinery to calculate the waste reduction a multi-head weigher can deliver for your product.