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Extrusion line for corrugated tubes for automotive

Wiring harnesses
 windshield washer

Corrugated tube machine for wiring harnesses

Wiring harnesses or slit tubes are extruded either Polypropylene(PP) or Polyamide(Nylon, PA) according to their position in their temperature resistance. Their corrugated profile associated to their low weight gives them great flexibility adapted to their use. A colored co-extruded line can be integrated for quick visual identification.
If needed, wiring harness can be packaged in coils or octabins.

corrugated pipe machine
two types of pipe corrugator:
Internal blow moulding
Vacuum forming

Blow Moulding:
This technology consist of blowing low pressure (0,1-1,5 bar) through the die head spider into the center of the continuously extruded hot plastic tube. The air is retained by a plug with metallic or silicone washers.
The hot plastic material is expanded by the internal air pressure against the corrugation machined in the mould blocks which chill and holds the tube against the moulds to provide the desired geometry. Corrugated products formed by internal air must have constant I.D. dimension.

Vacuum forming:
This technology consists of pulling the hot plastic tube against the mould blocks by vacuum suction applied through the moulds applied to the plastic tube outside diameter surface. Vacuum from the moulds keep the tube against the moulds to provide the desired geometry. Corrugated products formed by vacuum may have variable I.D. dimensions.


    cable protection
    TV, telephone
    glass fiber
    control and computer cables
    automobiles, machines and airplanes
    medical applications
    washing machines

Corrugated tube machine for windshield washer hose (windscreen wiper feeding pipe)

Qingdao Extrusion Technology Co.,Ltd.       Tel.+86-532-87287650
Zhongyun industry park, Qingdao, China