BLG-AF023
Lens / Glass Wafer Anti-Static Agent
Aqueous anti-static functional cleaner: added directly to the customer's existing alkaline or neutral cleaning bath, it neutralises surface static charge and suppresses static re-generation during cleaning, preventing particle adsorption that forms pitting and white spots before and after coating, while improving water-film spreading for a fast-drying, streak-free finish.
Technical Description
BLG-AF023 is an aqueous anti-static functional cleaner from SEMPURION for E-beam vacuum coating lines. It is added directly to the customer's existing alkaline or neutral cleaning bath.
During E-beam vacuum coating the electron beam charges the workpiece surface, and a charged surface adsorbs airborne particles that end up as pitting and white spots in the coating, directly reducing yield. BLG-AF023 removes that static source at the cleaning step: built on a polymer active system, it neutralises surface static charge during cleaning — both positive and negative — and suppresses static re-generation, so the surface is charge-free before coating and residual charge is cleared after coating.
As a cleaning-type design, it performs its anti-static function and is then carried away with the water, leaving no residual film on the workpiece, which makes it suitable for both the pre-coating and post-coating steps without affecting the subsequent film. It also markedly lowers water surface tension so the film spreads and levels quickly for a fast-drying, streak-free finish. The product is a neutral aqueous system that works in cleaning baths up to pH 14 without altering the bath's existing pH; it is non-flammable and low-odour.
It is added directly to the customer's existing cleaning bath (alkaline or neutral, no dedicated tank) at a recommended 0.5–1.5% by bath volume, stirred in with no heating or pre-dissolving, and needs no extra rinsing or drying afterwards. DI or pure water is recommended; replace the bath every 3–7 days depending on line load and top up periodically to maintain the effective concentration. Substrates and coating processes vary, so a small compatibility trial is recommended before full production. Product safety and handling requirements follow the MSDS supplied with the goods.
Product Overview
BLG-AF023 is an aqueous anti-static functional cleaner designed for vacuum coating (electron-beam evaporation) lines. It can be added directly to the customer's existing alkaline or neutral cleaning bath, where it neutralises static charge on the workpiece surface during cleaning and suppresses static re-generation.
Core value: eliminating surface static charge so that particles are not adsorbed during coating (pitting and white spots), protecting coating yield and film quality.
Comparable to SUSS / RENA-class production-line chemicals.
Applications
| Scenario | Description |
|---|---|
| Pre-coating cleaning | Ensures the workpiece carries no charge when it enters the coating chamber, avoiding the particle adsorption that forms pitting and white spots during E-beam coating |
| Post-coating cleaning | Removes the surface charge generated by the coating process and suppresses static re-generation |
| Precision cleaning lines | High-cleanliness cleaning steps where particle adsorption must be controlled |
| Hard-surface treatment | Anti-static treatment of hard substrates such as lens glass, glass wafers, sapphire wafers and ceramics |
During E-beam vacuum coating the electron beam charges the workpiece surface. A charged surface adsorbs airborne particles onto it, which form pitting, white spots and other defects in the coating and directly reduce yield.
BLG-AF023 removes this static source at the cleaning step: it guarantees a charge-free surface before coating and clears residual charge after coating, so the clean surface state is maintained right through to the end of coating.
How It Works
The product uses a polymer as its active component in an aqueous system that forms a stable solution in water. It delivers four effects during cleaning:
| Effect | Description |
|---|---|
| ① Charge neutralisation | Neutralises static charge on the workpiece surface during cleaning, so the surface carries no charge and particles are no longer adsorbed |
| ② Both polarities covered | ★ Removes both positive and negative charge — polarity-agnostic, covering the various static charges produced by different processes and machines |
| ③ Re-generation suppressed | Suppresses static charge from re-generating during cleaning and transfer, keeping the surface charge-neutral |
| ④ Improved spreading | Markedly lowers water surface tension so the water film spreads and levels quickly for a fast-drying, streak-free finish |
★ Cleaning-type design: after performing its anti-static function during cleaning, the product is carried away with the water and leaves no residual film on the workpiece. It can therefore be used in both the pre-coating and post-coating steps without affecting the performance of the subsequent film.
Specifications
| Item | Specification |
|---|---|
| Appearance | Colorless to light-yellow clear liquid |
| System | Aqueous (miscible with water in any ratio) |
| pH | 7 – 9 (neutral) |
| Alkali resistance | ★ Works normally in cleaning baths up to pH 14 without any loss of anti-static performance |
| Density (20 °C) | ≈1.0 g/cm³ (diluted working bath) |
| Solubility | Miscible with water in any ratio; insoluble in alcohols and ketones |
| Flammability | Non-flammable (aqueous system) |
| Operating temperature | Ambient to medium (typical cleaning-process range) |
| Shelf life | 24 months (room temperature, sealed, away from light) |
Note: the product is a neutral system; further data can be provided to meet the customer's environmental requirements.
How to Use
- 1[Pre-coating] workpiece → normal cleaning → [add BLG-AF023] → drying → E-beam vacuum coating
↑ No surface charge — no pitting or white-spot adsorption
- 1[Post-coating] workpiece → E-beam vacuum coating → [add BLG-AF023] cleaning → downstream steps
↑ Clears the surface charge generated by coating
| Item | Description |
|---|---|
| Where to add | The customer's existing cleaning bath (alkaline or neutral) — no dedicated tank required |
| Recommended dose | 0.5 – 1.5% by bath volume (adjust to water quality, working conditions and the customer's process) |
| Preparation | Stir directly into the cleaning bath — no heating and no pre-dissolving required |
| Replenishment | Top up periodically according to throughput to maintain the effective concentration |
| pH flexibility | Neutral system: adding it does not change the pH of the customer's existing bath; stable in baths up to pH 14 |
| Downstream | No extra rinsing or drying — the line's normal drying is sufficient |
- ·Use DI or pure water to make up the bath; hard water can impair performance
- ·Replace the bath periodically to avoid contamination build-up (typically every 3–7 days depending on line load)
- ·Run a small trial first to confirm compatibility with the site's cleaner, bath and subsequent coating step
Safety & Handling
| Category | Description |
|---|---|
| ✅ Process compatibility | Cleaning-type design with no residual film — suitable for both the pre-coating and post-coating steps |
| ✅ Bath compatibility | Neutral system that can be added directly to alkaline (up to pH 14) or neutral cleaning baths without altering their acid-base system |
| 🟡 Personal protection | Wear protective gloves and goggles; avoid prolonged contact with skin and eyes |
| 🟡 Eye contact | Rinse immediately with plenty of water for at least 15 minutes and seek medical attention |
| ✅ Environment | Aqueous system; dispose of waste liquor in accordance with local environmental regulations |
⚠️ First-use note: substrates and coating processes vary — run a small compatibility check before production (trial workpieces with the same batch's coating or layer, confirming no abnormality).
Packaging & Storage
| Item | Description |
|---|---|
| Packaging | Plastic drums; sizes customised to customer requirements (typically 25 kg / 50 kg / 200 kg) |
| Storage | Cool, dry, well-ventilated place away from direct sunlight; keep sealed |
| Storage temperature | 5 – 40 °C (avoid freezing and prolonged high-temperature exposure) |
| Shelf life | 24 months unopened |
| Transport | Non-hazardous goods; standard transport |
Product Advantages
✅ Works in both steps
Suitable before and after coating — one product covers both de-static needs on the line
✅ Works in existing baths
Neutral system that can be added to the customer's existing alkaline (stable at pH 14) or neutral bath — no dedicated tank, no process change
✅ No residue
Cleaning-type design carried away with the water, leaving no film on the workpiece and no effect on the subsequent coating
✅ Both polarities covered
★ Removes both positive and negative charge — regardless of process or machine
✅ Dual effect
Eliminates static to prevent particle adsorption while improving spreading for a fast-drying, streak-free finish
✅ Wide substrate range
Suitable for lens glass, glass wafers, sapphire wafers, ceramics and other hard substrates
✅ Aqueous & eco-friendly
Non-flammable, low odour — meets clean-production requirements
Related Products in the Series
| Model | Name | Process step |
|---|---|---|
| BLG-AF023 | Lens / Glass Wafer Anti-Static Agent | Pre- and post-coating cleaning on E-beam vacuum coating lines |
| BLG-PS023 | Anti-Static Agent for Sandblasting | Added to blasting abrasive to reduce friction charging and dust |
The technical parameters in this document are compiled from the company's internal testing and publicly available industry standards. Actual results depend on on-site process conditions; product selection should be based on measured data.
Benchmark information is compiled from publicly available product literature and serves only to indicate product positioning; it does not constitute an evaluation of, or a comparison with, third-party products.
Product safety and handling requirements are governed by the MSDS supplied with the goods.
Need samples or datasheets?
Contact us for detailed specs, MSDS and sample support for BLG-AF023
Need technical support or a sample?
Tell us your substrate, contamination and process conditions — our process engineers will recommend a grade and arrange sample validation.
- Phone
- +86 769-82786068
- sales@sempurion.com
- Website
- www.sempurion.com
- Address
- Songshan Lake, Dongguan, Guangdong, China