16 Head "Bag-in-Bag" Weigher (1.6L/2.5L) — The Machine That Counts by Weighing, and Never Jams on a Floppy Bag
Your product isn't loose granules anymore. It's already sealed inside a sachet, a stick pack, a pillow pouch, or a hard shell. Now you need to bundle ten coffee sticks into a retail box, twelve seasoning packets into a family pack, or a handful of in-shell walnuts into a gift bag—and your old counting machine is choking on every third cycle. Soft bags bridge, stack, and slip; mixed SKUs confuse optical sensors; irregular shells defy vibration feeders. You don't need another counter. You need a bag in bag multihead weigher that treats every finished piece as a weight, not a shape.
Industry Pain Points
The secondary-packaging paradox: why counting machines fail where weighing wins
Floppy sachets kill vibration feeders. Stick packs and soft pouches don't flow like grains—they bridge across channels, double-stack in pockets, and jam the gate. Every jam is a stopped line, a manual intervention, and a missed shipment window.
Optical counters can't handle mixed multipacks. A "variety pack" with three different sachet designs defeats camera-based counters instantly. You're forced back to hand-packing the very SKUs that should be your highest-margin automated lines.
Missing-piece complaints erode retail trust. A 12-pack shipped with 11 sachets triggers chargebacks, relisting fees, and brand damage that costs 100× the value of the missing packet. Counting by vision is probabilistic; counting by weight is deterministic.
️ Speed ceilings on bagged lines. Most sachet-handling systems cap at 60–80 bpm because mechanical singulation can't keep up. Your upstream pouch filler runs 140 bpm; your downstream bundler becomes the bottleneck that idles the whole cell.
The Solution
Introducing the LEESOLU 16 Head "Bag-in-Bag" Weigher (1.6L/2.5L)—the only machine in our lineup engineered to weigh finished packages, not raw ingredients.
Here's the paradigm shift: we don't count your sachets—we weigh them. Each sealed stick pack, pillow pouch, or in-shell nut has a known mass. Our MCU/PLC dual-control system reads the cumulative weight in each of the 16 buckets, computes the exact combination that hits your target piece-count, and discharges in one synchronized beat. Ten coffee sticks? The scale knows 10 × 4.2g = 42.0g ± tolerance—and lands it every cycle, even if the sticks are slightly crumpled, overlapping, or visually identical.
But weight logic alone isn't enough for soft goods. That's why we built in a dedicated levelling mechanism: a precision sweep-and-settle stage that flattens bridged sachets, separates stacked pouches, and presents each piece individually to the bucket array before weighing begins. No jams. No double-counts. No operator babysitting.
And because we refused to let "gentle handling" mean "slow," this machine sustains 140 bpm—the fastest in the entire LEESOLU catalog—while weighing irregular, floppy, mixed-SKU loads that would stall any optical counter at half that speed.
Core Advantages
1. Weighing IS Counting: Deterministic Accuracy on Any Bag Shape
Feature: 16-head combination algorithm applied to piece weight rather than bulk density; X(0.5) accuracy class; 0.1g resolution across 10–1500g range.
Advantage: The system counts by mass, not by silhouette—so crumpled stick packs, transparent jelly pouches, matte-black seasoning sachets, and glossy candy wrappers all register identically. Mixed-SKU multipacks? Just sum the known weights; no vision retraining required.
Benefit: Zero missing-piece chargebacks. When buyers ask can a multihead weigher weigh pre packed sachets and small bags accurately, the answer is yes—with higher repeatability than any optical counter, because weight doesn't care about color, print, or orientation.
2. The Levelling Mechanism: Taming Floppy Goods Before They Jam
Feature: Integrated sweep-and-settle levelling stage upstream of the bucket array; large 1.6L/2.5L hopper geometry with anti-bridge angles; MCU/PLC dual-control timing.
Advantage: Soft sachets that would normally bridge across a vibratory channel are mechanically flattened, de-stacked, and singulated before they reach the weigh heads. Irregular in-shell nuts roll freely instead of wedging.
Benefit: Unattended operation through full shifts. If you're wondering how to weigh irregular shaped products likewalnuts in shell without jamming, the levelling mechanism + oversized斗体 is the engineering answer—no manual clearing, no line stops, no overtime labor.
3. 140 bpm: The Speed Flagship of the Entire LEESOLU Lineup
Advantage: While optical counters struggle past 80 bpm on soft goods, this machine holds 140 bpm steady—even on mixed-SKU, irregular, or partially crumpled loads. It matches or exceeds the output of your upstream pouch filler, eliminating the bundling bottleneck.
Benefit: One machine keeps pace with two filling lines. When procurement asks what is the max speed of a 16 head weigher for bagged products, the spec sheet says 140 bpm—and real-world references confirm it. This isn't a gentle-but-slow niche tool; it's the throughput anchor of your secondary packaging cell.
4. One Platform, Every Bag Type: From Stick Packs to In-Shell Nuts
Feature: 7"/10" color touch HMI with unlimited recipe storage; modular bucket/chute configuration; food-grade stainless construction; ships as single unit (1800×1435×2017mm, 580kg net).
Advantage: Switch from coffee stick packs to seasoning sachets to hardware accessory bags via software recall—no mechanical changeover, no sensor recalibration, no cross-contamination risk between lanes.
Benefit: Contract packers run dozens of SKU formats on one asset. Whether you need a 16 head weigher for coffee stick pack multipack weighing, a bag in bag weigher for mixed sachet snack family pack packing, or a combination weigher for large shell nuts walnuts and pecans in shell, this is the single platform that does all three—protecting CapEx and floor space.
Application Scenarios
Where "weighing finished pieces" unlocks lines that counters can't touch:
☕ Coffee, Tea & Solid Beverage Stick-Pack Multipacks: Deployed as a 16 head weigher for coffee stick pack multipack weighing cell. Ten 4g sticks → 40g target; the scale lands it at 140 bpm even when sticks are slightly bent or foil-wrapped. Upstream filler runs flat-out; downstream cartoner never starves.
Candy, Snack & Seasoning Variety Packs: Running as a multihead weigher for individually wrapped candy pouch packing station, or a 16 head combination weigher for seasoning and spice sachet multipacks line. Mixed-SKU family packs (3 flavors × 4 packets) are summed by weight, not sorted by camera—zero retraining when packaging artwork changes.
In-Shell Nuts, Pet Treats & Hardware Kits: Configured as a combination weigher for large shell nuts walnuts and pecans in shell, a 16 head weigher for pet treat sachets and jerky strips packing, or a bag in bag weigher for hardware accessory bag kit packing module. Irregular shells, floppy jerky strips, and pre-bagged screw assortments all feed cleanly thanks to the levelling mechanism—no wedging, no bridging, no manual intervention.
(Honorable mentions: high speed weigher for frozen food pouches and irregular IQF pieces, multihead weigher for plastic flakes strips and granules dosing, and bag in bag weigher for mixed sachet snack family pack packing.)
Technical Specifications
Parameter
TY-ZHY162M/P16-01-11
TY-ZHY162M/P25-01-11
Weighing Range
10 – 1500 g
10 – 1500 g
Accuracy
X(0.5)
X(0.5)
Min. Scale Interval
0.1 g
0.1 g
Max. Speed
140 bpm
140 bpm
Hopper Volume
1.6 L
2.5 L
Control System
MCU / PLC
MCU / PLC
HMI
7" / 10" color touch screen
7" / 10" color touch screen
Power Supply
AC 220V/110V ±10%, 50/60Hz, 2.0 kW
AC 220V/110V ±10%, 50/60Hz, 2.0 kW
Packing Dimension
1800(L) × 1435(W) × 2017(H) mm
1800(L) × 1435(W) × 2017(H) mm
Net Weight
580 kg
580 kg
Gross Weight
650 kg
650 kg
Quality & After-sales
✅ CE & ISO Certified: Full compliance documentation for customs, insurance, and retail-plant safety audits.
✅ Food-Grade Stainless Steel: All product-contact surfaces polished stainless; fully washdown-ready for sticky, oily, or dusty secondary-packaging environments.
✅ MCU/PLC Dual-Control Architecture: Industrial-grade redundancy ensures stable timing even under 140 bpm continuous load—critical for unattended night shifts.
✅ 1-Year Comprehensive Warranty + Lifetime Remote Support: Our engineers stay on call for the life of the machine.
✅ 48-Hour Global Spare Parts Dispatch: Buckets, levelling blades, load cells, and sensors air-shipped fast.
As a direct factory, LEESOLU configures every bucket angle and levelling stroke around your specific bag dimensions—not a stock setup. And if you're evaluating where to buy reliable sachet multipack weigher from China manufacturer, ask us for video references running your exact bag type; we'll connect you.
FAQ
Q1: How much does a 16 head bag in bag multihead weigher cost?
A: Pricing depends on hopper choice (1.6L vs 2.5L), HMI size (7" vs 10"), and any custom levelling-blade geometry for unusual bag shapes. As a factory-direct builder, LEESOLU quotes transparently with no distributor markup. Send your bag dimensions and target multipack count for an exact figure within 12 hours.
Q2: Can a multihead weigher weigh pre packed sachets and small bags accurately?
A: Yes—and more reliably than optical counters. Because we count by mass, not by silhouette, crumpled, overlapping, transparent, or dark-printed sachets all register identically. The X(0.5) accuracy class and 0.1g resolution ensure piece-count integrity even when individual bag weights vary slightly within spec.
Q3: Sachet multipack packing: counting machine vs bag in bag weigher—which is better?
A: For rigid, uniform, single-SKU items at low speed, a counter may suffice. For soft, floppy, mixed-SKU, or irregular goods at high speed, the bag-in-bag weigher wins decisively: no jamming on bridged sachets, no confusion on variety packs, no speed ceiling below 100 bpm. The sachet multipack packing counting machine vs bag in bag weigher which is better debate ends when you factor in unattended runtime and zero missing-piece chargebacks.
Q4: What is the max speed of a 16 head weigher for bagged products?
A: 140 bpm sustained—the fastest in the LEESOLU lineup. This matches or exceeds most upstream pouch fillers, eliminating the bundling bottleneck that plagues secondary packaging cells. Speed does not come at the cost of accuracy; the levelling mechanism ensures clean singulation even at full throughput.
Q5: How to weigh irregular shaped products like walnuts in shell without jamming?
A: Two engineering answers: (1) oversized 1.6L/2.5L hoppers with anti-bridge angles let shells roll freely instead of wedging; (2) the integrated levelling mechanism mechanically separates stacked or interlocked pieces before they reach the weigh heads. No vibration feeder tuning, no manual clearing, no line stops.
Stop Fighting Floppy Bags. Start Weighing Them at 140 bpm.
Your upstream filler is ready to run flat-out. Your downstream cartoner is waiting. The only thing between them and full throughput is a bundling step that jams, miscounts, or caps your speed at 80 bpm. Replace it with a machine that counts by weight, levels by design, and runs at 140 bpm unattended.
Send LEESOLU your bag dimensions, piece weight, target multipack count, and required speed—our engineers will return within 12 hours with:
A free bag-flow simulation showing how the levelling mechanism handles your specific sachet/stick/shell,
A throughput audit comparing your current bundling speed vs 140 bpm potential,
A factory-direct proposal with lead time, shipping plan, and ROI calculation.
[Get Your Free Bag-Flow Simulation & Quote] — when you buy 16 head bag in bag weigher direct from factory, every cycle counts, and none of them jam.
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