9 µm PSA Diamond Lapping Film Discs and Sheets

Fast, Flat, and Consistent Lapping for Precision Manufacturing

Introduction

9 µm PSA diamond lapping film discs and sheets are a cornerstone abrasive for precision lapping and surface preparation. Built with precision-graded 9 micron diamond abrasive, a dimensionally stable polyester backing, and pressure-sensitive adhesive (PSA), these films deliver fast stock removal while maintaining excellent flatness and surface consistency.

Positioned between coarse grinding (15–30 µm) and pre-polishing (6 µm and finer), the 9 µm grit is widely used in optics, fiber optics, semiconductors, ceramics, carbide machining, and metallography where controlled material removal and repeatability are critical.

What Is 9 µm PSA Diamond Lapping Film?

A 9 µm PSA diamond lapping film is a precision abrasive film composed of:

• 9 micron diamond particles for aggressive yet controlled cutting

• Resin-bonded abrasive layer for uniform wear

• Polyester (PET/Mylar) backing to ensure flatness and dimensional stability

• PSA backing for quick, secure attachment to flat substrates

Compared with loose diamond slurry, PSA-backed diamond films offer a cleaner, more repeatable, and easier-to-control polishing process.

Why Use 9 µm Diamond Lapping Film?

Ideal Grit for Controlled Stock Removal

The 9 µm diamond grit is optimized to:

• Remove damage left by 15–30 µm abrasives

• Flatten surfaces efficiently without deep scratching

• Prepare components for 6 µm and finer polishing steps

This balance reduces total polishing time and improves downstream surface quality.

Key Advantages

• High material removal rate

• Uniform scratch pattern

• Excellent flatness retention

• Reduced edge rounding

• Consistent batch-to-batch performance

Key Features of 9 µm PSA Diamond Lapping Film Discs and Sheets

Precision-Graded Diamond Abrasive

• Tight particle size distribution

• Predictable cut rate

• Minimal random surface defects

PSA-Backed for Secure Mounting

• Bonds firmly to glass plates, platens, ceramic tiles, or metal tooling

• No film movement during lapping

• Clean removal without adhesive residue

Durable Polyester Film Backing

• Maintains coplanarity under pressure

• Resists stretching, tearing, and curling

• Suitable for manual and automated polishing systems

Extended Service Life

Diamond abrasives typically last 5–10× longer than aluminum oxide or silicon carbide films on hard materials.

Discs vs Sheets: Selecting the Right Format

9 µm Diamond Lapping Film Discs

Best suited for:

• Automated or semi-automated polishers

• Rotating platens

• High-volume production environments

Common disc sizes include 3″, 5″, 6″, 8″, 10″, and 12″.

9 µm Diamond Lapping Film Sheets

Ideal for:

• Manual lapping

• Laboratory and R&D work

• Custom fixtures and flat plates

Standard sheet sizes include 9″ × 11″ and 8.5″ × 11″.

Typical Applications

Optics & Photonics

• Optical lenses and prisms

• Laser optics and glass substrates

Fiber Optics

• SC, LC, FC, ST ferrule preparation

• MPO / MTP ferrule flattening before pre-polish

Semiconductor & Electronics

• Wafer backside lapping

• Substrate flattening

• Sample preparation for SEM, TEM, and FIB

Metallography & Materials Science

• Hardened steel and tool steels

• Carbide and cermets

• Titanium and superalloys

Ceramics & Advanced Materials

• Technical ceramics

• Wear-resistant coatings

• Composite materials

Product Specifications

General Specifications

Available Sizes & Formats

Recommended Grit Progression

A common diamond lapping sequence:

30 µm → 15 µm → 9 µm → 6 µm → 3 µm → 1 µm → 0.5 µm

Using a controlled progression minimizes subsurface damage and improves final surface quality.

Best Practices for Using 9 µm PSA Diamond Lapping Film

• Clean the mounting surface before application

• Apply uniform, moderate pressure

• Operate at low to medium speeds

• Rinse the film periodically to remove debris

• Clean and dry after use to extend film life

9 µm Diamond Film vs Conventional Abrasives

Diamond lapping film provides better consistency, longer life, and improved surface control on hard and brittle materials.

Why 9 µm PSA Diamond Lapping Film Is Industry-Standard

• Clean, slurry-free operation

• Highly repeatable results

• Reduced operator dependency

• Compatible with manual and automated systems

• Trusted across optics, electronics, and precision manufacturing

Conclusion

9 µm PSA diamond lapping film discs and sheets offer the ideal combination of aggressive stock removal and surface control. As a critical mid-stage abrasive, they flatten surfaces efficiently while preparing components for fine polishing steps.

For manufacturers and laboratories seeking reliable, high-performance lapping with consistent results, 9 µm PSA-backed diamond lapping film is the proven choice.