Aluminum Oxide Lapping Film

Overview

XYT Aluminum Oxide Lapping Film utilizes electroplated or precision-coated abrasive technology to deliver consistent, controlled polishing performance for ultra-fine surface finishing. The film features micron-graded Aluminum Oxide (Al₂O₃) particles uniformly bonded to a polyester film backing, providing excellent flatness, durability, and surface consistency.

We offer two types:

Precision-Coated: Standard method using resin bond coating
Electroplated: Enhanced adhesion for aggressive cutting and longer film life

Technology Comparison

Feature	Electroplated Type	Precision-Coated Type
Abrasive Bonding	Electrostatic or electroplated	Resin or slurry-based coating
Cutting Power	Higher	Moderate
Surface Finish	Slightly coarser	Finer, smoother finish
Durability	Excellent for tough materials	Ideal for delicate materials
Applications	Metals, ceramics	Plastics, fiber optics

Key Specifications

Abrasive Material: Aluminum Oxide (Al₂O₃)
Bonding Method: Electroplated or resin-coated
Backing: High-strength PET film
Adhesive: With or without PSA (Pressure-Sensitive Adhesive)
Grit Sizes (Micron): 0.3μm, 0.5μm, 1μm, 3μm, 5μm, 6μm, 9μm, 12μm, 15μm, 30μm, 45μm, 60μm, 80μm
Film Thickness: 75μm ±5% standard (custom options available)
Formats: Sheets, discs, rolls, and custom die-cut shapes
Color: Varies by grit for easy visual identification
Size Options: 1mm to 350mm (customizable)

Applications

Aluminum Oxide Lapping Film is commonly used in industries requiring smooth, scratch-free finishes, especially on softer or delicate materials. Ideal for:

Fiber Optic Connectors (LC, SC, MPO, MT)
Ceramics and Plastics
Optical and Glass Components
Hard Disk Drives and Magnetic Heads
Metals and Soft Alloys (e.g., aluminum, copper)
PCB and Microelectronic Components

Polishing Process

Typical use steps for Aluminum Oxide Lapping Film:

Pre-Polishing:
Use 15μm or 9μm grit for material leveling or epoxy removal on fiber connectors.
Intermediate Polishing:
Apply 6μm → 3μm for controlled surface refinement.
Final Polishing:
Use 1μm → 0.5μm → 0.3μm for achieving a mirror-quality finish.

The film is compatible with dry and wet polishing environments and can be used manually or with automated polishing machines.

Advantages

Excellent Surface Finish: Ideal for soft materials, reducing micro-scratches.
Uniform Abrasive Coating: Ensures consistent performance and finish quality.
High Flexibility: Suitable for irregular or curved surfaces.
Durable PET Backing: Offers dimensional stability and long service life.
Custom Options Available: Grits, sizes, shapes, and PSA options tailored to your process.

Common Issues & Troubleshooting

Problem	Cause	Solution
Surface scratches	Grit too coarse or contamination	Use finer grit, replace film regularly
Uneven polishing	Uneven pressure or worn film	Use a flat platen, apply uniform pressure
Film slipping	Improper PSA or mounting surface	Clean surface, apply even pressure
Low removal rate	Grit too fine or worn film	Start with coarser grit, replace film

How to Choose the Right Grit

Application	Recommended Grit Size
Fiber Connector Pre-Polishing	15μm → 9μm
Fiber Connector Final Polishing	3μm → 1μm → 0.3μm
Plastic or Soft Metal Finishing	12μm → 6μm → 1μm
Ceramic or Optical Components	6μm → 3μm → 0.5μm
Magnetic Head / HDD Surfaces	3μm → 0.5μm

If unsure, begin with 6μm as a mid-range starting point and adjust based on removal needs and surface requirements.

Why Choose XYT Aluminum Oxide Lapping Film?

Equivalent to 3M 261X and 268X Series
Available in bulk sheets, custom die-cut discs, and rolls
Custom grit combinations and PSA configurations
Stable supply with short lead times
Technical support and OEM services available