Precision Etched Slot Die Shim Plate for Coating Thickness Control
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Product parameters
Parameter | Specification / Industry Range |
Material | Stainless Steel 304 / 316 / 316L (others on request: brass, copper) |
Thickness | 0.01 – 0.50 mm (ultra-thin precision control) |
Thickness Tolerance | ±0.002 – ±0.01 mm |
Flatness | ≤ 0.01 mm (depending on size) |
Profile Tolerance | ±0.01 – ±0.02 mm |
Hole Diameter | ≥ 0.10 mm (etching capability) |
Minimum Feature Size | ≥ 0.10 mm |
Edge Quality | Burr-free, smooth edge (chemical etching) |
Surface Finish | Matte / Brushed / Electro-polished / Passivated |
Hardness | Annealed / Half-hard / Full-hard (customizable) |
Etching Process | Double-sided chemical etching |
Additional Process | Laser cutting / CNC machining (hybrid processing available) |
Coating Compatibility | Solvent-based / Water-based / High-viscosity slurry |
Temperature Resistance | Up to 400°C (depending on material) |
Assembly Type | Bolt-fixed / Stackable shim system |
Customization | Fully OEM based on drawings (DXF / CAD / PDF) |
Application | Slot die coating / battery coating / film coating / precision fluid control |
Product Description
Product Description
Precision etched slot die shim plate designed for accurate coating thickness control in high-performance coating systems. Manufactured from stainless steel using chemical etching, this precision shim ensures uniform gap spacing, burr-free edges, and excellent dimensional accuracy. It is ideal for applications requiring micron-level coating consistency and stable fluid distribution.
Application Field
Slot die coating systems
Lithium battery electrode coating
Optical film coating (PET, OCA)
Adhesive and functional coating processes
Precision Etched Slot Die Shim Plates: The Superior Choice for Coating Accuracy
In the high-stakes world of slot die coating—whether for lithium-ion battery electrodes, optical films, or adhesive tapes—the shim (or gasket) is the heart of the system. It defines the coating width and thickness. Even a microscopic deviation can result in costly material waste or product failure.
At our factory, we specialize in manufacturing Precision Etched Slot Die Shim Plates using advanced chemical etching technology. Unlike traditional stamping or wire cutting, our process ensures absolute precision, making it the ideal solution for high-performance coating systems.
The Challenge: Why Traditional Machining Fails in Coating Applications
When manufacturing shims for precision coating, the choice of processing method is critical. Traditional methods like mechanical stamping or wire EDM (Electrical Discharge Machining) often introduce physical defects that compromise coating quality.
- Burrs and Debris: Stamping creates "rollover" and burrs on the edges. In a slot die, these burrs disrupt the laminar flow of the slurry, causing streaks or uneven coating edges.
- Mechanical Stress: Mechanical cutting exerts force on the metal, leading to internal stress. Over time, this can cause the shim to warp or deform, altering the critical gap spacing.
- Heat Affected Zones (HAZ): Laser cutting or Wire EDM uses heat, which can alter the metallurgical structure of the stainless steel, potentially reducing its corrosion resistance against battery slurries.
The NKEYTO Solution: The Chemical Etching Process
We utilize a sophisticated chemical etching process (also known as photochemical machining) to manufacture our shims. This is a "cold" manufacturing process, meaning it removes material through chemical dissolution rather than mechanical force or heat.
Here is why this matters for your coating application:
- Absolutely Burr-Free Edges: Because the metal is dissolved atom-by-atom rather than sheared, our shims are completely free of burrs. This ensures a smooth, uninterrupted flow path for your coating material. You get clean cut-edges on your coated film without the need for secondary trimming.
- Zero Mechanical Stress: Our stress-free metal parts retain the original hardness and temper of the raw material. This is crucial for shims that must maintain a precise gap under high clamping pressure inside a die head. They will not warp or creep over time.
- Complex Geometry & Half-Etching: Chemical etching allows us to create complex flow channels and even "half-etch" depth features in a single operation. This is difficult and expensive to achieve with CNC or stamping.
Technical Data: Precision You Can Measure
We understand that in precision coating, "close enough" is not good enough. Our facility is equipped to handle tight tolerances essential for micron-level coating control.
Feature | Specification | Benefit |
|---|---|---|
Tolerance | ±0.01mm (depending on thickness) | Ensures consistent coating width and gap spacing. |
Surface Finish | Smooth, uniform etching | Prevents slurry accumulation (hang-up) and defects. |
Minimum Aperture | 0.1mm | Allows for intricate vent holes or alignment features. |
Thickness Range | 0.03mm – 2.0mm | Suitable for thin-film to thick-film coating applications. |
Material Selection for Durability
We offer a variety of materials to match your specific chemical environment. For battery coating, we highly recommend SUS316 or SUS316L due to its superior corrosion resistance against electrolytes and solvents.
- Stainless Steel (SUS301, SUS304, SUS316): The industry standard for durability and corrosion resistance.
- Nickel Alloys: For extreme wear resistance.
- Titanium: For specialized high-corrosion applications.
Ready to Upgrade Your Coating Precision?
If you are looking for a reliable partner to manufacture high-precision, stress-free metal parts for your slot die systems, we are here to help. From material selection to final inspection, we ensure every shim meets your exact specifications.
Contact us today for a quote.
- Company: Shenzhen NKEYTO Precision Hardware Co., Ltd.
- Contact: Luna
- WhatsApp: 12132219094
Questions and Answers
Frequently Asked Questions (FAQ)
Q: What is the advantage of etched shims over stamped shims?
A: Stamped shims often have burrs and internal stress that can lead to deformation. Our chemical etching process produces burr-free shims with no mechanical stress, ensuring the shim remains flat and precise under pressure, which is vital for uniform coating.
Q: Can you manufacture shims with complex flow channels?
A: Yes. One of the distinct advantages of our etching technology is the ability to machine complex geometries, including intricate flow channels and varying thicknesses (via half-etching), without the high cost of hard tooling.
Q: How do you ensure surface quality?
A: We strictly control the etching parameters to ensure surface finish control. The resulting surface is smooth and uniform, preventing the coating slurry from catching on imperfections, which reduces defects in the final coated film.
Q: What is the typical lead time for a prototype?
A: Since chemical etching uses digital tooling (film) rather than hard metal molds, we can iterate designs rapidly. Prototypes can often be completed within 3-5 days.
Factory Description
We have a full set of etching production equipment and mature processing technology. We can manufacture products in any shape with mesh sizes as small as 0.1mm, according to your requirements.
Our Advantage
Factory Direct Shipping
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
Experienced Design and Manufacturing Team
We work closely with customers from the design phase to help avoid potential product flaws, ensuring both the functionality and design meet expectations.
Excellent Supply Chain Management
We can quickly adjust production schedules to meet your urgent deadlines, whether it's for large bulk orders or smaller rush orders.
OEM & ODM Support
We offer the option to print your logo or other customizations.
Strict Quality Control
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
Certificate
商标6类
9001
质量认证
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Shenzhen Nkeyto Precision Hardware Co., Ltd. is a factory specializing in precision hardware processing, committed to providing customers with high-quality products and services.We look forward to working with you.
Contact Us
E-mail: luna@nkeyto.com
Tel: +1 213-221-9094
Add: 13th Building, 202, Dawangshan Second Industrial Zone, Dawangshan Community, Shajing Street, Bao'an District, Shenzhen, Guangdong Province
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