Trelleborg has patented a method for manufacturing high-pressure composite pressure vessels above 70 bar. The process involves using aligned discontinuous fiber composite materials and continuous fiber-reinforced composites to create a strong and durable vessel. The vessel is pressurized, heated, and cooled to achieve the final product. GlobalData’s report on Trelleborg gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Trelleborg, Marine fenders was a key innovation area identified from patents. Trelleborg's grant share as of January 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.
Method of manufacturing high-pressure composite pressure vessel
A recently granted patent (Publication Number: US11873947B2) outlines a method for manufacturing high-pressure composite pressure vessels designed to contain gas and/or liquid. The process involves providing an expandable core vessel with a hoop section between end domes, wrapping it first with an aligned discontinuous fiber-reinforced composite and then with a continuous fiber-reinforced composite. The vessel is pressurized, heated, and cooled under pressure to create the final high-pressure composite pressure vessel. The method also includes constraining the vessel's expansion post-heating using various materials like continuous fiber composite overwrap, a mold, or a higher temperature polymer film.
The patent details different variations in fiber lengths for the aligned discontinuous fiber composite material, ranging from 5mm to 100mm, and specifies the use of thermoplastic or thermoset composites. The high-pressure composite pressure vessels produced using this method are capable of holding compressed hydrogen at 700 bar or greater and compressed natural gas at 200 bar or greater. The process involves various techniques like filament winding, fiber placement, and fiber patch preforming to ensure the composite materials are applied effectively. The vessels manufactured using this method are intended for high-pressure applications exceeding 70 bar (1000 PSI or 7 MPa), catering to industries requiring robust containment solutions for gases and liquids.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
