Our PTFE Thread Seal Tape Production Process

At Aigle Plast, we pride ourselves on delivering premium-quality PTFE thread seal tapes. Our production process combines precision engineering, high-grade materials, and state-of-the-art machinery to ensure every roll meets strict quality standards.

Step 1: Raw Material Preparation

We begin with 100% pure PTFE fine powder resin, the foundation of our superior tape. Each batch is carefully weighed to match the required density, thickness, and performance properties. This ensures consistent quality across all production runs.

Step 2: Blending with Lubricant

A specialized liquid lubricant (commonly naphtha or equivalent) is added to the resin. The mixture is processed in a high-efficiency PTFE powder mixer, ensuring complete and uniform blending. This step is essential for smooth extrusion and achieving a flawless tape surface.

Step 3: Pre-forming

The blended material is loaded into a hydraulic pre-forming press where it is compressed into solid cylindrical billets under high pressure. This pre-form shape optimizes the material for the next stage—ram extrusion.

Step 4: Ram Extrusion

Each billet is fed into a PTFE ram extruder machine. Here, the material is forced through a precision die, producing a continuous, thin PTFE film. This raw “tape-like” strip will form the base of our finished product.

Step 5: Lubricant Removal (Oven Drying)

The extruded film is passed through a controlled-temperature drying oven to remove all traces of the lubricant. This process is carefully regulated to prevent premature sintering, preserving PTFE’s natural flexibility and sealing properties.

Step 6: Calendering & Stretching

Using precision calender rollers, the tape is adjusted to the exact required thickness and width. A controlled stretching process follows, enhancing density, tensile strength, and overall tape durability—key for performance under demanding sealing conditions.

Step 7: Slitting & Winding

The wide PTFE sheet is fed into automated slitting machines, which cut it into standard or custom widths (e.g., 12mm, 19mm). Each strip is then wound onto durable plastic spools or cores, ready for branding and packaging.