بكرة تيفلون

Problem-Solution Intro

Stop the “Swelling Nightmare” in Your Etching Line. If you are managing a PCB horizontal wet process line, you know the drill: standard EPDM or PVC rollers start to swell, soften, and eventually lose their grip within weeks of exposure to concentrated etching chemistry. This leads to substrate slippage, uneven chemical application, and costly downtime. The SN:6-6 Teflon (PTFE) Roller is designed to end this cycle. We don’t just sell a roller; we provide a maintenance-free barrier against the most aggressive stripping and etching agents in the industry.

The “Why This Material” Section

Why Teflon (PTFE) is Non-Negotiable for SN:6-6 While other materials claim “chemical resistance,” Teflon stands alone in its Chemical Inertness. The molecular structure of PTFE is impenetrable by strong acids and alkalis, ensuring the roller maintains its precise 0.15mm radial runout regardless of the bath concentration.

• Zero Liquid Absorption:Unlike rubber, Teflon won’t absorb chemicals, meaning no diameter expansion and no contamination carry-over between tanks.
• Low Friction Surface:This ensures a smooth “glide” for delicate PCB panels, preventing micro-scratches during high-speed transport.

Customization Capability

Engineering Beyond the Surface A high-end Teflon roller is useless if the internal shaft corrodes. To ensure a 5-10x longer service life compared to standard parts, QXY offers integrated custom engineering:

• Titanium (Grade 2) Axis:The industry gold standard for total corrosion immunity.
• Precision Grooving:We can machine V-grooves or U-grooves directly into the Teflon surface to optimize liquid runoff based on your equipment’s hydraulic design.
• Shaft Options:Choose from Carbon Fiber (for high-speed inertia reduction) or Stainless Steel 316L depending on your budget and chemical exposure.

Main Application Scenarios

Concentrated chemistry requires a “zero-swell” strategy, which is where the SN:6-6 excels. In PCB Etching and Stripping lines, the aggressive acids usually turn standard rollers into sponges, causing them to swell and lose grip. Our Teflon rollers end this “swelling nightmare.” They are chemically inert, meaning their diameter won’t change even after months of immersion in the harshest baths.

We also deploy these in Black Hole and PTH lines, where high-purity and low-friction transport are non-negotiable to prevent micro-scratches on delicate copper. Because Teflon absorbs absolutely zero liquid, there is no risk of cross-contamination when moving substrates between different chemical stages. It’s the “fit-and-forget” solution for equipment builders who prioritize total corrosion immunity.

Technical Specification Table