China Multi-Layer PA Smooth / Corrugated Hose/ Tube Extrusion Line Manufacturers, Factories

Multi-layer co-extrusion technology development, make tube physical properties and cost control has great development space, such as environmental protection performance of multilayer automotive tubing, high pressure resistance performance of multi-layer braided hose, casing wall lubrication performance etc. In recent years, PA multilayer composite hose/tube of automotive fuel system is internationally widely used in car fuel oil system which features a kind of portable, high performance and environmental protection line products.

Product Description

Multi-layer PA Extrusion Line
With the development requirements of vehicle lightweight, energy conservation and emission reduction, and the penetration rate of new energy vehicles increasing year by year, multi-layer PA (nylon) tubes are more and more widely used in vehicles. The main types are:
  • 3-layer smooth tube for cooling system (PA / TIE / PP & TPV)
  • 3-layer corrugated tube for cooling system (PA / TIE / PP)
  • 2 / 3 / 5-layer smooth / corrugated tubes for oil circuit system (PA / TIE / EVOH / TIE / PA)
Among them, 3-layer smooth / corrugated tubes used in cooling system of new energy vehicles is currently the mainstream development direction, and the market potential is huge.

Innovation and technological upgrading are inseparable from practice. Based on BAOD Extrusion company’s extremely mature precision small tube extrusion process technology and experience. Since 2015, we have developed a five-layer PA automotive fuel hose extrusion molding mold on the basis of mature three-layer/four-layer precision tube extrusion mold. With the support of Zumbach and iNOEX, we invested in PA five-layer tube extrusion line in 2015, and we continuously improved the runner design of 5-layer mold within 2years. In June 2017, the performance of the five-layer PA tube/hose samples produced by our testing line reached QC/ t-798-2008 industry quality standard. At present, our multi-layers tube/hose extrusion line has the same technology as the extrusion line from Europe or US, and has successfully delivered quite a few production lines.

Automotive Multi-layer Tube Manufacturing

The multi-layer extrusion unit can be combined with a smooth tube or corruaged hose forming auxiliary line, and achieve the extrusion production of multi-layer nylon smooth tube and multi-layer nylon corrugated hose on the same machine line:

Frequently Asked Questions
Q: What types of multi-layer automotive tubes can be manufactured?

The system supports 3-layer smooth and corrugated cooling tubes (PA/TIE/PP & TPV), as well as 2, 3, and 5-layer fuel and oil circuit tubes (PA/TIE/EVOH/TIE/PA).

Q: Can smooth and corrugated tubes be produced on the same line?

Yes. The multi-layer extrusion unit can be combined with either smooth tube calibration or corrugated hose forming auxiliary units to produce both types on a single line.

Q: Which automotive quality standards do the extruded PA tubes meet?

The five-layer PA tube and hose samples produced on our testing lines meet and conform to the QC/T-798-2008 industry quality standard.

Q: Why are 3-layer nylon tubes preferred in new energy vehicle (NEV) cooling systems?

They offer superior chemical resistance, low weight, and enhanced mechanical strength, meeting vehicle lightweighting and efficient thermal management demands.

Q: How is extrusion precision controlled for 5-layer co-extrusion molds?

With integration and measurement technologies supported by Zumbach and iNOEX, alongside optimized mold runner designs, uniform layer distribution and tight tolerances are guaranteed.

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