Rice and Grain Packing: 1kg to 25kg Solutions
The Short Answer: One System Packs Rice and Grains from 1kg to 25kg
Short answer: pack 1kg to 5kg retail bags on a roll-film VFFS (TOPY-VFFS) fed by a linear weigher (TOPY-VM), running 1kg bags at 40–60 bags/min with ±1–2g accuracy; switch the same weighing module to a large-bag filling station for 10kg to 25kg wholesale bags at 8–12 bags/min with ±0.1–0.3% accuracy. TOP Y MACHINERY supplies both machines as a matched, one-stop system — multi-scale weighing plus roll-film and open-mouth bagging — so one line covers the full 1kg to 25kg range without bolting together mismatched equipment.
This guide gives you the bag-size-to-machine selection table, the speed and accuracy numbers you can put in a spec sheet, how the TOPY-VFFS and TOPY-VM work as one system, and the changeover logic that lets a single line serve both retail and wholesale. A practical FAQ closes the guide.
Bag Size vs. Machine: The 1kg–25kg Selection Table
Bag size decides the machine: 1kg–5kg retail bags belong on a roll-film VFFS with a linear weigher, while 10kg–25kg wholesale bags need the same weigher driving a large-bag filling station. The table below maps each common bag size to the right machine, weighing method, speed, and bag type:
| Bag Size | Machine | Weighing Accuracy | Speed | Bag Type | Typical Use |
|---|---|---|---|---|---|
| 1 kg | TOPY-VFFS + TOPY-VM linear weigher | ±1–2 g | 40–60 bags/min | Pillow / quad-seal roll film | Retail rice, retail grains, spices |
| 2.5 kg | TOPY-VFFS + TOPY-VM linear weigher | ±2–3 g | 25–40 bags/min | Pillow / quad-seal roll film | Jumbo retail packs, foodservice |
| 5 kg | TOPY-VFFS + TOPY-VM linear weigher | ±3–5 g | 18–28 bags/min | Pillow / quad-seal roll film | Retail & small wholesale |
| 10 kg | Linear weigher + large-bag filling station | ±5–10 g | 10–15 bags/min | Heavy-duty film / PP woven | Wholesale, restaurants, mills |
| 25 kg | Linear weigher + large-bag filling station | ±10–30 g (0.1–0.3%) | 8–12 bags/min | PP woven / multi-wall kraft | Mills, feed, export, wholesale |
Two rules simplify the choice. (1) If the bag is made from roll film and sealed on three or four sides, it is a VFFS application — 1kg to 5kg, with the linear weigher sitting above the forming tube as the dosing head. (2) If the bag arrives as a pre-made open sack (PP woven or multi-wall kraft), it is a large-bag filling application — 10kg to 25kg, where the same TOPY-VM weigher drops a weighed batch into the sack and a closing station seals it. Because the weigher is shared, a TOP Y MACHINERY line changes from retail to wholesale by swapping the bagging module, not the whole system.
How TOP Y MACHINERY Packs 1kg to 25kg: VFFS + Linear Weigher, One-Stop
TOP Y MACHINERY builds the rice and grain line as a matched system: the TOPY-VM linear weigher doses, the TOPY-VFFS forms and seals retail bags, and the same weigher feeds large-bag filling for wholesale sizes — one supplier, one control philosophy, one stop. The multi-scale approach means accuracy is set at the weigh hopper, not guessed at the sealer:
- Multi-scale weighing: the TOPY-VM's combination of weighing buckets hits target weight by selecting the best bucket combination, so rice and grain packs hold spec weight without giveaway — typically ±1–2g at 1kg.
- Roll-film retail bags: the TOPY-VFFS forms pillow and quad-seal bags from roll film for 1kg–5kg, with PLC touch-screen recipe storage for quick size changeover.
- Large-bag capability: the same weigher drives 10kg–25kg filling into PP woven or multi-wall kraft sacks at 8–12 bags/min — the wholesale side of the same line.
- One-stop integration: film control, weighing, sealing, and bagging are supplied and tuned together, with a 2-year warranty, overseas engineers available, and 10–15 day delivery.
- Programmable changeover: bag size, target weight, seal temperature, and speed are stored per SKU on the touch screen, so switching between a 1kg retail SKU and a 5kg foodservice SKU is a menu selection.
TOPY-VFFS Roll-Film Packager
Roll-film VFFS for 1kg–5kg retail rice and grain bags: pillow and quad-seal formats, PLC recipe control, and 40–60 bags/min at 1kg with the TOPY-VM weigher above the forming tube.
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TOPY-VM Linear Weigher
Multi-scale linear weigher for rice, grains, beans, and sugar: 10–3000g range, 3L weighing buckets, and the accuracy module behind both the retail VFFS line and the 10–25kg large-bag filling station.
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Speed and Accuracy at Each Bag Size: What the Numbers Mean
The speed spread from 40–60 bags/min at 1kg down to 8–12 bags/min at 25kg is not a weakness — it reflects the physics of weighing and sealing larger doses. At 1kg, the weigher cycles quickly and the VFFS sealer keeps pace. At 25kg, the weigh hopper must hold and release a 25kg batch, the sack must be positioned and filled, and the closing operation takes longer — so cycle time grows while weight accuracy actually improves on a percentage basis:
| Parameter | 1 kg Retail | 5 kg Foodservice | 25 kg Wholesale |
|---|---|---|---|
| Typical speed | 40–60 bags/min | 18–28 bags/min | 8–12 bags/min |
| Accuracy | ±1–2 g | ±3–5 g | ±10–30 g (0.1–0.3%) |
| Dosing module | TOPY-VM linear weigher | TOPY-VM linear weigher | TOPY-VM (large-bag station) |
| Giveaway per bag | ~0.1–0.2% | ~0.1% | ~0.1–0.3% |
| Line format | VFFS roll film | VFFS roll film | Open-mouth sack filling |
Three numbers decide a rice and grain line's payback. (1) Speed sets throughput: at 40–60 bags/min a 1kg line produces roughly 2,400–3,600 bags per hour, or 2.4–3.6 tonnes of retail rice per hour. (2) Accuracy sets giveaway: ±1–2g on a 1kg bag is 0.1–0.2% overfill — at 25kg, ±10–30g is the same 0.1% discipline, which matters at mill scale where a fraction of a percent is tonnes per month. (3) Changeover sets flexibility: because the weigher stores recipes, moving the line between 1kg, 5kg, and 25kg work is measured in minutes, not a re-engineering project. For a mill or packer serving both retail and wholesale, that single line economics is why the VFFS + linear weigher combination is the industry default.
Frequently Asked Questions
What machine packs 1kg rice bags?
A roll-film VFFS (TOPY-VFFS) with a TOPY-VM linear weigher above the forming tube. The weigher doses 1kg within ±1–2g and the VFFS forms and seals pillow or quad-seal bags at 40–60 bags/min — the standard retail rice configuration.
Can one line really handle 1kg to 25kg?
Yes, with the right architecture. Use the shared TOPY-VM linear weigher for dosing across all sizes; drive the TOPY-VFFS for 1kg–5kg roll-film retail bags, and switch the same weigher to a large-bag filling station for 10kg–25kg PP woven or kraft sacks. The weigher stays constant — only the bagging module changes.
What weighing accuracy can I expect for rice packing?
At 1kg, ±1–2g (about 0.1–0.2% of bag weight). At 25kg, ±10–30g, which is the same 0.1–0.3% discipline. Accuracy is set by the linear weigher's bucket combination selection, so it holds regardless of operator skill — giveaway stays at the fraction-of-a-percent level that keeps mill economics healthy.
How fast is a 25kg grain bagging line?
8–12 bags/min for 25kg wholesale sacks, equivalent to roughly 12–18 tonnes per hour. The rate is set by the weigh-and-release cycle plus sack positioning and closing; large-bag filling is deliberately steadier than retail VFFS speed because the per-bag value and weight are far higher.
Linear weigher or multihead weigher — which do I need for rice?
For rice and grains — free-flowing, uniform granules — a linear weigher (TOPY-VM, 10–3000g) is the economical and accurate choice, and it scales to 25kg. A multihead weigher earns its cost for sticky, mixed, or irregular products that need many combination buckets. Rice lines almost always start with the linear weigher.
Which bag types work for 1kg to 25kg rice and grain?
1kg–5kg retail runs pillow or quad-seal bags from roll film — laminated film for branding, or plain PE for economy. 10kg–25kg wholesale runs PP woven sacks or multi-wall kraft, either pre-printed or blank with a label station. The TOPY-VFFS handles the roll-film side; the large-bag station handles the open-mouth side.
Why choose TOP Y MACHINERY for rice and grain packing?
TOP Y MACHINERY supplies the whole 1kg–25kg range as one matched system: TOPY-VFFS roll-film packagers and TOPY-VM linear weighers with multi-scale accuracy, recipe-based changeover, CE-approved construction in SS304, a 2-year warranty, overseas engineer support, and 10–15 day delivery — one supplier from weigh hopper to sealed bag.
Pack 1kg Retail and 25kg Wholesale on One Line
TOP Y MACHINERY supplies rice and grain packing from 1kg to 25kg: TOPY-VFFS roll-film packagers with TOPY-VM linear weighers delivering 40–60 bags/min at 1kg, and the same multi-scale weighing module driving 8–12 bags/min large-bag filling at 25kg. Every line is configured to your bag sizes, target weights, film, and speed.
Ready to spec your rice and grain line? Request a Rice & Grain Packing Quotation or compare the full packaging machine range for VFFS, weighing, and large-bag options.
