Testex Press-O-Film Replica Tape
Testex Press-O-Film Replica Tape captures the surface profile of blasted steel by compressing micro-foam onto the substrate. After burnishing, the tape impression is measured via micrometer (or PosiTector RTR), subtracting the backing thickness to derive peak-to-valley height. It supports archival replicas and curved surfaces.
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This replica tape comprises a compressible foam layer affixed to a rigid polyester backing. When pressed against a roughened surface, it forms a negative impression. Measuring the compressed thickness minus backing yields the average height of surface peaks. Multiple grades allow measurement of different profile ranges.
Testex Press-O-Film Replica Tape
Testex Press-O-Film is a simple yet reliable method to replicate and quantify steel surface topology. Its graded foam options (Coarse, X-Coarse, etc.) cover profiles from 12 to 150 µm. Its durability, archive capability, and compatibility with PosiTector RTR make it a standard in surface profile testing.
Features
Overview
| Specification | Value / Description |
|---|---|
| Construction | Compressible foam layer bonded to incompressible polyester backing substrate |
| Available grades / ranges | Coarse Minus: 12–25 µm (0.5–1.0 mil) Coarse: 20–50 µm X-Coarse: 38–115 µm X-Coarse Plus: 100–150 µm Optical Grade versions also available |
| Pieces per carton | 50 impressions per carton |
| Durability / environment | Withstands exposure up to 60 °C (140 °F); long shelf life; no expiration date |
| Measurement method | Place and burnish on surface → remove → measure compressed tape between micrometer anvils → subtract backing thickness |
| Accuracy / precision | Coarse: ±2 µm precision, ±8 µm accuracy; X-Coarse: ±6 µm precision, ±8 µm accuracy |
| Backing (incompressible) thickness | Standard backing 50 µm (2 mil) |
| Compatibility | Used with micrometers, PosiTector RTR H, or PosiTector RTR 3D readers |
