How Anti Static IC Tubes Are Made From PVC

How Anti Static IC Tubes Are Made From PVC Plastic

The process starts with PVC resin fed into an extruder. Electric heating raises the material to 150 to 165 degrees Celsius across six heating zones. A rotating screw forces the molten plastic through a die to form a continuous tube profile. The die has three zones: expansion, compression, and the final shaping orifice. Consistent extrusion speed on all sides is critical to avoid dimensional variation.

Anti-Static IC tubes for IC, SOP,DIP,TO-220,PLCC

Vacuum Shaping Controls Tube Profile And Wall Thickness

Immediately after exiting the die, the hot tube enters a vacuum sizing die. Vacuum suction holds the outer wall against the inner wall of the sizing die. Cooling water flows through the mold to harden the tube. This step ensures the tube matches the cavity dimensions and maintains wall thickness within ±0.1mm. Any deviation in die alignment or vacuum pressure causes out-of-tolerance profiles.

Traction Pulls The Tube Through The Line At Controlled Speed

A stepless speed-regulated tractor pulls the cooled tube from the sizing die. The speed must match the extrusion rate to prevent stretching or compression. Mismatched speeds cause wall thickness variation or surface defects. The tractor feeds the tube into the next stage without stopping.

Fixed-Length Cutting Ensures Consistent Component Count

Each tube must hold a fixed number of components, so the length is cut to a precise standard. The system uses a fixed-length cutting method. After cutting, the tube is automatically discharged to the next station. This ensures every tube in a batch has the same length and number of cavities.

Surface Treatment Adds Anti-Static Properties

After cutting, the tubes are immersed in an antistatic liquid. The treatment is applied uniformly to the inner and outer surfaces. The tubes are then dried to remove excess liquid. This step ensures the surface resistivity meets ESD protection requirements. The treatment is critical for preventing static discharge during handling and transport.

Final Inspection Checks For Defects Before Packaging

Each tube is tested for surface quality, transparency, and dimensional accuracy. The inspection checks for impurity spots, roughness, and profile consistency. Tubes that fail are rejected. Only tubes passing all tests proceed to packaging. This ensures every batch meets the requirement for smooth, transparent, and defect-free profiles.

Packaging And Storage Prevent Damage Before Use

Finished tubes are packed in cartons according to customer requirements or standard practice. The cartons are labeled with batch number, material, and dimensions. Storage must follow the same rules as for other IC tubes: flat, out of direct sun, and with stack height limited to avoid flattening thin-wall tubes.