Flexible and collapsible plastic corrugated tubing machine used for medical equipment

This production line makes single-wall flexible and collapsible corrugated tubing for multiple applications: medical breathing tubes (EVA), air-conditioning drain and extension pipes, washing machine and sink drain hoses, electrical wire conduit and automotive wire harness protection sleeves, shisha/hookah hoses, and novelty telescopic pop tubes.

The SJ65/30 single-screw extruder and die head run PVC (powder or granule), PP, PE and EVA granules. The single-screw barrel is designed to handle both powder and pellet forms without swapping extruders.

Typical forming speed is 20–30 m/min, equivalent to about 1,200–1,800 m/hr. Actual throughput depends on pipe diameter, wall thickness and material grade.

Standard scope includes vacuum feeder and hopper dryer, SJ65/30 single-screw extruder, die head, mouth mold/core bar/gas nose/pull rod, corrugated forming mould, high-speed forming machine, and a double-station winding machine. Optional PLC or manual control panels are available.

The new mouth-mould/core-bar design fits together so size changes are much faster than older separate-core designs. Changeovers are streamlined and typically save more than one hour compared with older designs; exact time depends on operator skill and size range.

The line uses water-circulating cooling plus controlled air to solidify and stabilize the extrudate during high-speed molding. Gears drive moulds and templates to ensure even corrugation and smooth inner and outer walls.

Customers can choose a PLC-based automatic control system or a manual control panel according to their preference and budget. The control system manages extrusion temperatures, puller speed and winding coordination.

The die-head heating ring contains rock wool insulation to retain heat and reduce energy loss. This design typically reduces electrical heating consumption by about 30% compared with uninsulated heads.

The double-station winding machine has automatic speed-balancing to match rewinding speed with production. When production slows below a set threshold, the rewinder will stop to prevent over-tight winding, tensioning or pipe breakage.

Yes. Forming moulds can be supplied in double-cavity or triple-cavity configurations in one set. The forming machine supports quick up/down changes for cavity selection without removing the entire mould set.

Regular maintenance includes cleaning the die head and moulds after production runs, checking and lubricating the gearbox and bearings, inspecting forming mould surfaces for wear, and verifying heating and cooling circuits. Daily visual checks and scheduled monthly/quarterly inspections are recommended; service intervals depend on usage hours and material abrasiveness.

The line can produce medical-grade EVA corrugated tubes, but final compliance (biocompatibility, ISO, FDA, CE, etc.) depends on the chosen polymer, additives and downstream cleaning/sterilization processes. Specify regulatory requirements at inquiry so materials, hygiene measures and documentation can be matched to the needed standard.

Common issues: uneven corrugation or diameter (check mould alignment, forming speed and puller synchronization), rough inner wall (check melt temperature, die condition and moisture in raw material), poor dimensional accuracy (inspect mould wear and extrusion pressure), and excessive vibration or noise (check gearbox, motor mounts and coupling). Adjust temperatures, verify cooling flow, and examine tooling wear as first steps.

Most suppliers offer optional installation, commissioning and on-site operator training packages. Remote support and video guidance may also be available. Confirm services and costs with the vendor prior to order.

Spare parts packages and warranty terms vary by supplier. Common offerings include stocked wear parts (moulds, core bars, heating elements) and a warranty period with paid extended service options. Ask the manufacturer for a detailed spare-parts list and warranty statement relevant to your purchase.