Flexible and collapsible plastic corrugated tubing is commonly found on medical equipment such as ventilators, respirators as well as devices for anesthesia and sleep apnea.
Commonly used materials for medical applications include polyethylene (PE) and polypropylene (PP). Medical tubing can be produced in a variety of configurations, including:
• Corrugated or smooth inner wall
• Tapered profile
• Expandable/collapsible
QET’s high speed corrugators are capable of producing medical corrugated tubing with cuffs designed to our customer’s specifications for compatibility with the required connectors and fittings. |
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.
Applications
cable protection
TV, telephone
glass fiber
electricity
control and computer cables
automobiles, machines and airplanes
medical applications
washing machines
dishwashers
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