Liner for Composite
Hollow-Body Foundations for Composite Vessels.
For both household applications and future-mobility systems, composite liners form the core of high-performance solutions. At Kautex, extrusion blow molding is leveraged to produce seamless, multi-layer thermoplastic liners that serve as inner seals in composite vessels. These liners are engineered with precise wall thickness, barrier properties, complex features (like integrated bosses and testing points), and co-extrusion options to meet rigorous technical and safety requirements.
In domestic systems (such as LPG cylinders, water filter housings, and other gas/liquid containment), these liners ensure leak-tight, durable performance while allowing efficient production and reliable quality control. In mobility applications — for CNG, hydrogen, and other high-pressure use cases — our liners must meet extreme conditions: pressures up to 700 bar, wide temperature ranges (from –60 °C to +120 °C), and minimal gas diffusion. Kautex has pioneered a polyamide liner of 320 litres volume (approx. 500 mm diameter, >2 m length) for hydrogen pressure vessels — a world first for blow-molded liners of this size.
These liners act as robust inner cores in overwrapped fiber composite vessels: in addition to the blow-molded liner, they include threaded or flanged boss parts for valves and fittings, and are wrapped in composite materials for mechanical strength. The outcome is lighter, more resistant, and cost-efficient tanks compared to welded or rotationally moulded alternatives.
At every step — from material selection and simulation through liner blow molding, in-line testing, and integration into vessel systems — Kautex ensures full-service support to meet both current standards and future demands.
Liners for Home Gas & Liquid Systems (LPG)
Extrusion blow molding delivers seamless, multi-layered liners for household applications like LPG cylinders and water filter housings. These thermoplastic liners provide internal seals and can be crafted with precise wall thickness, complex features, and barrier properties. With co-extrusion options, integrated mounting bosses and testing points streamline production — supported by Kautex’s full-service from simulation to in-line testing.
High-Pressure Liners for Sustainable Transport (CNG and Hydrogen)
In sustainable mobility, composite liners for CNG and hydrogen tanks must meet rigorous standards — handling up to 700 bar, -60 °C to +120 °C temperature cycles, and minimal gas diffusion. Kautex pioneered a giant 320 L polyamide liner (with 2 m length, 500 mm diameter) via extrusion blow molding — a record for high-pressure hydrogen vessels
These liners serve as the sealed thermoplastic core, overwrapped with fiber composites. Blow molding offers major benefits: faster, simpler, and more scalable than rotational molding, and more consistent than welding-based methods .
Your Benefits with Kautex Composite Liner Technology for lighter, safer and more efficient Pressure Vessels.
Optimal products demand a optimized process. Benefit from several test and verifications done at our technical center.
From small volume up to several hundred liters, over 2 m length, for high-performance components.
Benefit from decades of material know-how in processing PA and HDPE materials.
We do not stop at after blowing. Post processing steps like cooling or quality check can be integrated.
Large scale liners up to 320L
Explore the KBS241, a machine for ideal to produce large scale liners with demanding materials like PA. Utilize our accumulator head technology and flexible article handling options.
Medium range up to 80L
Our KBS20 is your ideal production solution, if you are producing liners up to 80 l. Discontinuous extrusion and small footprint bring maximum output with minimum space requirements.
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\t\t\t\t\tEngineered for Strength, Efficiency and Future-Ready Performance.\t\t<\/p>\n
For both household applications and future-mobility systems, composite liners form the core of high-performance solutions. At Kautex, extrusion blow molding is leveraged to produce seamless, multi-layer thermoplastic liners that serve as inner seals in composite vessels. These liners are engineered with precise wall thickness, barrier properties, complex features (like integrated bosses and testing points), and co-extrusion options to meet rigorous technical and safety requirements.<\/p>\n
In domestic systems (such as LPG cylinders, water filter housings, and other gas\/liquid containment), these liners ensure leak-tight, durable performance while allowing efficient production and reliable quality control. In mobility applications \u2014 for CNG, hydrogen, and other high-pressure use cases \u2014 our liners must meet extreme conditions: pressures up to 700 bar<\/strong>, wide temperature ranges (from \u201360 \u00b0C to +120 \u00b0C), and minimal gas diffusion. Kautex has pioneered a polyamide liner of 320 litres<\/strong> volume (approx. 500 mm diameter, >2 m length) for hydrogen pressure vessels \u2014 a world first for blow-molded liners of this size.<\/strong><\/p>\n These liners act as robust inner cores in overwrapped fiber composite vessels: in addition to the blow-molded liner, they include threaded or flanged boss parts for valves and fittings, and are wrapped in composite materials for mechanical strength. The outcome is lighter, more resistant, and cost-efficient tanks compared to welded or rotationally moulded alternatives.<\/p>\n At every step \u2014 from material selection and simulation<\/strong> through liner blow molding<\/strong>, in-line testing, and integration into vessel systems \u2014 Kautex ensures full-service support to meet both current standards and future demands.<\/p>\n Liners for Home Gas & Liquid Systems (LPG)<\/p>\n Extrusion blow molding delivers seamless, multi-layered liners for household applications like LPG cylinders<\/strong> and water filter housings<\/strong>. These thermoplastic liners provide internal seals and can be crafted with precise wall thickness, complex features, and barrier properties. With co-extrusion options, integrated mounting bosses and testing points streamline production \u2014 supported by Kautex\u2019s full-service from simulation to in-line testing.<\/p>\n High-Pressure Liners for Sustainable Transport (CNG and Hydrogen)<\/p>\n In sustainable mobility, composite liners for CNG<\/strong> and hydrogen tanks<\/strong> must meet rigorous standards \u2014 handling up to 700 bar, -60\u202f\u00b0C to +120\u202f\u00b0C temperature cycles, and minimal gas diffusion. Kautex pioneered a giant 320\u202fL polyamide liner (with 2\u202fm length, 500\u202fmm diameter) via extrusion blow molding \u2014 a record for high-pressure hydrogen vessels<\/p>\n These liners serve as the sealed thermoplastic core, overwrapped with fiber composites. Blow molding offers major benefits: faster, simpler, and more scalable than rotational molding, and more consistent than welding-based methods .<\/p>\n Your Benefits with Kautex Composite Liner Technology for lighter, safer and more efficient Pressure Vessels.<\/p>\n \t\t\t\tLiner for Household Applicaitons<\/h3>\n
Liner for Future Mobility<\/h3>\n
Your Benefits with Kautex<\/h2>\n
