Silicon Carbide Flocked Film for MT Ferrule Geometry Pre-Polishing and Fiber Height Precision Control

Overview

Silicon Carbide (SiC) Flocked Film is a specialized polishing film designed for geometry pre-polishing of MT/MPO/MTP ferrules, where maintaining fiber height uniformity and minimizing edge roll-off are critical. This film features micron-graded silicon carbide abrasives embedded in a flocked microfiber surface, providing controlled material removal, even contact pressure, and repeatable geometry control during early-stage polishing.

Ideal for use in multi-fiber connector production lines where fiber protrusion, end-face flatness, and core edge protection must be managed prior to final polishing.

Key Specifications

Abrasive Material: Silicon Carbide (SiC)
Pile Layer: Flocked microfiber on flexible PET or cloth backing
Backing Thickness: 75μm–150μm (customizable)
Film Thickness with Pile: 0.3mm–1.0mm
Grit Sizes: 3μm, 5μm, 6μm (standard for pre-polishing)
Formats: Ø127mm or Ø130mm discs, sheets, and rolls
Adhesive: With or without PSA (Pressure-Sensitive Adhesive)
Color: Gray/black (varies by grit size)

Applications

MT/MPO/MTP Connector Geometry Pre-Polishing
Fiber Height Precision Control Prior to Final Polish
Polishing of Positive Core Fibers and Multi-Fiber Arrays
Flat Surface Preparation before Diamond or SiO₂ Final Polish
Edge Shape Preservation in Mass-Production Fixtures

Why Use Silicon Carbide Flocked Film for Pre-Polishing?

✅ Stable Material Removal – Gentle yet effective SiC cutting ensures predictable ferrule shape control
✅ Fiber Height Management – Maintains even fiber protrusion, preventing undercutting or excessive core dip
✅ Ideal Surface Preparation – Smooths epoxy and ferrule face for diamond or final SiO₂ polishing steps
✅ Minimizes Geometry Errors – Reduces risk of end-face edge rounding or white ring formation
✅ Flexible Yet Firm Contact – Pile structure applies soft, even pressure across multiple fibers

Recommended MT Ferrule Polishing Sequence

Step	Film Type	Grit	Purpose
1	Sic Film	30 or 15μm	Epoxy and fiber stub removal
2	Sic Film	9μm → 3μm	Geometry pre-polishing, height control
3	SiC Flocked Film	1μm	Surface smoothing and prep
4	Final Flocked Film (e.g., CiO₂ or SiO₂)	0.5μm Or 0.02μm	Mirror polish / end-face defect removal

Use with deionized water or polishing lubricant for best performance.

Performance Targets

Fiber Height Deviation: 1700-2200nm
End-Face Angle Accuracy: Within ±0.1° (for APC)
Ferrule Geometry Deviation: Minimized (reduces doming or dip)
Surface Ra (Post-SiC Step): ~0.05μm – 0.1μm

Technical Advantages

Feature	Benefit
Micron-graded SiC Abrasive	Uniform cut, reduced polishing defects
Flocked Pile Surface	Even pressure across 12/16/24/32/48 fibers
Compatible with Major Systems	Seikoh Giken, Domaille, Senko, etc.
Soft but Stable Conformability	Ideal for curved ferrule faces and positive cores

Why Choose XYT Silicon Carbide Flocked Film

Cleanroom-grade production = low contamination risk
Customizable for different pad stacks and fixture pressures
Compatible with all fiber optic connector types
Trusted in production lines across Asia, Europe, and the U.S.
Available with custom labeling and OEM packaging

Optional Services

Ra Surface Test Reports & Geometry Maps
Customized Pre-Polish Film Kits (with diamond + final films)
Technical Process Setup Support for MT/MPO polishing lines
Fast global delivery from large stock