ST-F Intelligent Ionizing Bar

The speed model. Pulsed DC with the Hibweer L.C.C. system, which stops generating negative ions while it makes positive ones and vice versa — rated at 2.5 times the neutralizing speed of a conventional bar. Choose it when the material moves too fast for a standard bar to keep up. Ion balance ±100 V, 6.5 kV DC pulse from DC 24 V, 12 W.

Neutralizing speed: 2.5× a conventional bar, rated
Ion balance: ±100 V — the trade for the speed
Control: Hibweer L.C.C. · pulse width varies with frequency
Working distance: 30–1000 mm
Output: 6.5 kV DC pulse · pulsed DC · DC 24 V, 12 W

The model for lines that move faster than a standard ionizer can follow. Speed is the specification; balance is what you trade for it.

What the ST-F Fixes

If any of these is happening on your line, the cause is usually a surface charge nobody is measuring.

Charge clears at low speed but not at full rate

The symptom is intermittent — the line runs clean during setup and starts producing rejects once it is up to speed.

Rated 2.5× a conventional bar

Material is only in front of the bar for a fraction of a second

On fast indexing or pick-and-place, decay time is the binding constraint, not ion balance.

Pulsed DC with phase separation

A bar that worked before a line upgrade stopped working after it

Nothing failed — the line simply got faster than the ionizer. The bar is doing exactly what it always did.

Swap to the ST-F, same mounting and 24 V supply

How It Works

Pulsed DC with the Hibweer L.C.C. system: while the bar generates positive ions it stops generating negative ones, and vice versa.

Pulsed DC waveform of the ST-F ionizing bar: a positive phase of high-voltage pulses followed by a negative phase, with pulse width Ton, pulse interval Toff, phase durations T+ and T−, and cycle time T marked — The positive and negative phases are separated rather than interleaved, and polarity never flips inside a pulse. Committing a whole phase to one polarity is what puts more of each ion species onto the surface per cycle — and what the 2.5× rating is attributed to.

Separating the two phases in time rather than overlapping them is what produces the speed, rated at 2.5 times that of a conventional bar. The rating is published without a comparison model or test conditions, so read it as the manufacturer's figure for the method rather than as a result on your line. Where a standard bar needs the material to dwell in front of it, the ST-F is built to clear the charge in the time the material is actually there.

The Hibweer L.C.C. system also adjusts pulse width according to frequency, so ion generation is matched to the line rather than run flat out.

Ion balance is ±100 V — the loosest of the three bar series, and the trade you make for the speed. If speed is not your constraint, the ST-G at ±50 V is the better default.

Supersonic air-intake structure, which is what the bar's neutralizing speed is attributed to
Up to 100 Hz pulse rate for high-speed moving targets
Hibweer L.C.C. system adjusts pulse width with frequency for flexible control of ion generation
Detects abnormal discharge, raises an alarm and cuts the high voltage automatically
Broadband network port for line-level monitoring and industrial networking
High voltage generated inside the bar — no external power supply box, no fixed HV cable

Specifications & Dimensions

Model	ST-F series intelligent ionizing bar
Input voltage	DC 24 V
Power	12 W
Ion generation	Corona discharge
Output	6.5 kV DC pulse (pulsed DC, Hibweer L.C.C.)
Ion balance	±100 V
Static decay time	1 s, rated — initial surface voltage, working distance and measurement method not published
Working distance	30–1000 mm
Operating temperature	0–45 °C, no condensation
Operating humidity	15–75 % RH, no condensation
Cross-section	30 × 82 mm
Length	Made to order from 300 mm, up to 3 m
Protection	Abnormal-discharge alarm with automatic high-voltage cutoff
Connectivity	Broadband network port

ST-F ionizing bar installation dimensions: 82 by 30 mm cross-section, overall view with mounting hole pitch, and mounting bracket detail with an 8 by 20 mm adjustment slot — The ST-F shares the bar profile and mounting hardware with the rest of the series: a 30 × 82 mm section, two brackets, and an 8 × 20 mm slot so the bar can be shifted after the holes are drilled.

Mounting hole pitch by bar length

Every bar takes two mounting holes, and the pitch is always the bar length less 120 mm — so you can work out the drilling for any made-to-order length.

Bar length (L)	Mounting hole pitch (P)	Holes
300 mm	180 mm	2
600 mm	480 mm	2
900 mm	780 mm	2
1200 mm	1080 mm	2
1500 mm	1380 mm	2
1800 mm	1680 mm	2
2100 mm	1980 mm	2
2400 mm	2280 mm	2
2700 mm	2580 mm	2

Built in our own Dongguan factory since 2013 About Shidike →

Not sure the ST-F is the right bar? Send the material, line speed, working distance and measured surface voltage — we will come back with a model, a length and a mounting position.

Where It Goes

The bar mounts across the material, facing it, anywhere from 30 mm to 1 m away. Choosing the ST-F for its speed does not cost you mounting flexibility.

Four typical mounting positions for an ionizing bar on a web line: at the unwind, ahead of the cleaning station, overhead on a gantry, and at the stacker — Four positions, one line. Which one you need depends on where the charge is created rather than where the defect shows up.

High-speed web and converting lines

When line speed rises past what a standard bar can neutralize, the symptom is intermittent — charge cleared at low speed, not at full rate. The ST-F is the model for that.

Fast indexing and pick-and-place

Where material is only in front of the bar for a fraction of a second, decay time is the binding constraint, not ion balance.

Retrofitting a line that got faster

A bar that worked before a line upgrade often stops working after it. Swapping to the ST-F addresses the speed without changing the mounting or the 24 V supply.

Electronics Printing Optoelectronics Textile SMT & PCB Film & Converting

Which Model, and What Length

All three bar series are rated 6.5 kV pulse output, generated inside the bar from a DC 24 V supply at 12 W, over a 30–1000 mm working range, and all three are made to length. What differs is how that high voltage is applied — pulsed AC on the ST-G, pulsed DC on the ST-E and the ST-F — and that decides which one fits your line.

ST-G — pulsed AC	Ion balance ±50 V, the tightest of the three. Adjustable frequency to 100 Hz. The default choice unless something below applies.
ST-E — high-frequency pulsed DC	Ion balance ±80 V. Fixed-polarity pins arranged alternately — each pin holds one polarity — which is why this is the bar positioned for a wide or long span, where a single-emitter design drifts.
ST-F — pulsed DC, Hibweer L.C.C.	Ion balance ±100 V, with neutralizing speed rated 2.5× a conventional bar; the ST-G and ST-E carry a 2× rating. Neither figure is published with a comparison model or test conditions, so the two ratings cannot be read as measured against one reference. Choose it when the material moves too fast for a standard bar to keep up.

Made to your width

Bars are not sold in fixed sizes. We cut the bar to the width of your material, anywhere from 300 mm to 3 m, so you are not paying for length you do not use or leaving an edge uncovered.

Frequently Asked Questions

How much faster is the ST-F?

Rated at 2.5 times a conventional bar, against the ST-G and ST-E at 2×. The rating is attributed to the Hibweer L.C.C. system, which stops negative ion generation while producing positive ions and vice versa rather than overlapping the two phases. Neither figure is published with a comparison model or test conditions, so it is a nominal multiple, not a guaranteed decay time on your material.

What ion balance does the ST-F achieve?

±100 V. That is the loosest of the three Shidike bar series — the ST-G is ±50 V and the ST-E is ±80 V — and it is the trade you make for the speed.

When should I choose the ST-F over the ST-G?

When the material moves too fast for a standard bar to neutralize in the time it is in front of the bar. If speed is not your constraint, the ST-G has tighter balance and is the better default.

What is the Hibweer L.C.C. system?

A control system that separates the two ion polarities in time — generating one while suppressing the other — and adjusts pulse width according to frequency. Separating the phases is what the 2.5× rating is attributed to; varying the pulse width matches output to line speed.

What is the ST-F's working distance?

30 mm to 1000 mm, the same as the ST-G and ST-E.

Does the ST-F need a separate high-voltage power supply?

No. High voltage is generated inside the bar from a DC 24 V supply at 12 W — no external power supply box, no fixed-length high-voltage cable.

How long can an ST-F bar be?

Made to order from 300 mm up to 3 m, cut to the width of your material. The cross-section is 30 × 82 mm.

Request a quote for the ST-F Give us the material, line speed, working distance and measured surface voltage, and the length you need.

New to ionization? What is an ionizing bar covers how corona discharge neutralizes a charged surface, and ionizing bar voltage output explains the 6.5 kV figure. To compare the range, see all industrial static eliminators and ionizing bars.