Multihead Weigher-Puffed Food Packaging Line

1. Product Overview

The Multihead Weigher (combination weigher) is the "accuracy heart" of a puffed-snack packaging line. Its job is to combine loose puffed product into batches of the target weight at extremely high speed and hand each batch to the vertical bagging machine. Its principle is combination optimisation: many weigh hoppers take product and weigh it simultaneously, and the control system selects the set of hoppers whose combined weight is closest to the target and discharges them at the same instant — achieving both speed and accuracy at once. For light, fluffy and fragile puffed products such as chips and popcorn, a conventional single-scale machine weighing bag after bag cannot meet the cadence of a high-speed line. Only the parallel multi-hopper combination of a multihead weigher can sustain high accuracy during large-batch continuous production.

This machine has been specifically optimised by Shanghai Linguan Equipment Manufacturing Co., Ltd. (Globule Sanitary Conveyor Pty Ltd) for puffed applications, concentrating on large-batch high-speed weighing of light puffed products and breakage-free accuracy: hopper volume, opening angle and vibratory dosing parameters are all calibrated for the fluffy nature of puffed material, so the product experiences only a gentle, short drop throughout the whole weighing process — never squeezed, retained or crushed. The equipment complies with FSMA hygienic design criteria and follows the brand philosophy of "Hygiene First · Safety First".

2. Position in the Puffed-Snack Packaging Line

The multihead weigher sits at the centre of the elevated station, with a complete gravity-flow chain around it: buffer hopper → vibrate feeder → multihead weigher → vertical bagging machine → take-off conveyor. On a high-speed puffed single line, the weigher's dosing frequency determines line capacity and its weighing accuracy determines the net-content compliance rate:

High-frequency dosing

● : the weigher runs at dozens of combination discharges per minute; each discharge is the base weight of one finished bag and directly decides the continuous running rate of the bagging machine;

Accuracy gatekeeping

● : puffed snacks are sold by net weight with strict tolerances on content deviation. Multi-hopper combination keeps per-bag deviation inside an extremely narrow band — avoiding the compliance risk of under-fill and the raw-material loss of over-fill;

Coordination with quick-return

● : surplus or overflow from the feeding stage is returned by the quick-return conveyor for redistribution, keeping the weigher running in its optimal hopper-level window.

3. Core Advantages: High-Speed Large-Batch Weighing of Light Puffed Products

1. High-speed large-batch weighing — cadence is capacity. Multiple weigh hoppers work in parallel and each combination discharge is completed by several hoppers together, compressing single-bag weighing time to a minimum. Combined with large buffer capacity and fast discharge mechanisms, the machine can run continuously at maximum frequency for long periods, meeting the throughput requirements of large-batch continuous bagging for chips and popcorn lines.

2. Breakage-free design calibrated for light puffed products. Puffed snacks have low bulk density and low strength — a knock breaks them. The hoppers use large radii and shallow openings, and the opening angle and drop height have been repeatedly calibrated so that product slides out gently instead of falling hard. Vibratory dosing uses a soft amplitude to avoid crushing chips at the intake stage. Fewer crumbs benefit both weighing accuracy and yield.

3. High-accuracy combination algorithm — net content assured. The control system reads the net weight of every weigh hopper in real time and completes combination optimisation in milliseconds, automatically discarding combinations with excessive deviation while meeting the target weight. Because puffed products are irregular and individual-hopper weights fluctuate widely, the algorithm includes intelligent compensation so accuracy stays stable over long runs, cutting waste in both directions — giving too little and giving too much.

4. Fast changeover for multiple products. Chips, popcorn and nuts behave very differently. The machine supports recipe-based management: each product has its own set of vibration parameters, target weight and combination strategy, recalled with one keypress at changeover — no manual trial-and-error tuning, matching the multi-product rotation common in puffed plants.

4. Structure and Hygienic Design

All food-grade stainless steel

● : hoppers, chutes and frame are food-grade stainless steel with radiused, dead-corner-free transitions, complying with FSMA hygienic design criteria;

Tool-free quick-release hoppers

● : both weigh hoppers and buffer hoppers can be removed without tools; whole sets can be taken off and hosed down at changeover, leaving no oil or seasoning residue;

Sealed electrics and control

● : load cells and electrical components are well protected with concealed wiring, and the whole machine accepts hose-down, suiting the oily environment of puffed snacks;

Safety guarding

● : moving parts are fully guarded and the hopper zone has safety interlocks to prevent accidental operation during cleaning or maintenance.

5. Technical Specifications

6. Integration with the Whole Line

The multihead weigher is the centre of the elevated station on a puffed line. The vibrate feeder feeds it with constant flow from above, with the bucket elevator / inclined conveyor and buffer hoppers safeguarding the product reserve; below, it hands each combined batch to the vertical bagging machine for bag forming and filling, then the take-off conveyor and the metal-detector/checkweigher combo unit inspect the finished bags; the quick-return conveyor sends overflow back to the front, while the modular belt conveyor and stainless steel platform handle horizontal transport and elevated support. Globule provides unified electrical control for the whole line: the weigher's hopper-level requests are interlocked in real time with the speeds of the feeder, elevator and quick-return conveyor, keeping supply and demand in balance during high-speed, large-batch production.

7. Suitable Products and Conditions

● Potato chips, fabricated chips and other sheet-type products (breakage-free combination weighing);

● Popcorn, corn balls and other round light products (large-batch high-speed weighing);

● Nuts and mixed kernels (regular high-speed combination);

● Any puffed-snack line demanding "high speed + high accuracy + low breakage" together.

8. Quality and Service

Shanghai Linguan Equipment Manufacturing Co., Ltd. was founded in 2019, and our engineering team has more than ten years of experience in food weighing and packaging, strictly following FSMA hygienic design criteria. Every multihead weigher is calibrated on real puffed product before shipment and delivered with an accuracy test report and bilingual operation manuals. We support on-site installation, commissioning, operator training and remote maintenance — helping your puffed line hold "high-speed large-batch output" and "breakage-free accuracy" in one hand.