Abstract:
Hochfestes Faserseil (1) mit einem Seilkern sowie einer optisch Verschleiß anzeigenden Ummantelung, wobei die Ummantelung eine Mantelschicht (2) aus miteinander verflochtenen Untereinheiten (3, 4) einer ersten Hierarchieebene aufweist und wobei gegebenenfalls ein Teil der Untereinheiten der ersten Hierarchieebene Untereinheiten einer zweiten Hierarchieebene aufweist, welche wiederum gegebenenfalls Untereinheiten einer dritten Hierarchieebene aufweisen. Es ist eine äußerste Mantelschicht (2) vorgesehen, deren Untereinheiten (3, 4) sich in ihrer Konstruktion unterscheiden und daraus resultierend unterschiedliche Verschleißfestigkeiten aufweisen und/oder es sind eine äußerste Mantelschicht und eine weitere Mantelschicht vorgesehen, und wobei sich die Untereinheiten der äußersten Mantelschicht von jener der weiteren Mantelschicht in ihrer Konstruktion unterscheiden und daraus resultierend unterschiedliche Verschleißfestigkeiten aufweisen.
Abstract:
The present invention pertains to a UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160°C of at most 0.9 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.
Abstract:
A securing device is provided comprised of a reactive fiber component and at least one of a terminating fiber component and an initiating fiber component. The reactive fiber component includes at least one of the following: an undrawn polymer fiber and a substantially undrawn polymer fiber, wherein the first reactive fiber component is operative to stretch responsive to a load. The terminating fiber component is in a compressed state and is operative to elongate to a length at which the terminating fiber component is operative to prevent further stretching of the first reactive fiber component responsive to the load. The initiating fiber component is operative to break responsive to a predetermined force and permit the first reactive fiber component to stretch responsive to the load.
Abstract:
The invention relates to an abrasion resistant fabric containing ultra high molecular weight polyethylene (UHMWPE) filaments and thermotropic liquid crystal polymers (LCP), the use thereof as protective means and to a protective cover containing said fabric. In particular, the invention relates to a rope and to a roundsling containing the protective cover.
Abstract:
The present invention provides a method which enables a steel wire to be highly strengthened with maintaining good ductility. Specifically, the present invention provides a method comprising: subjecting a high carbon steel wire material having carbon content of 0.85 to 1.10 mass % to a pre-stage drawing process with a predetermined magnitude of drawing, to form an intermediate wire material; subjecting the intermediate wire material formed by the pre-stage drawing process to a patenting treatment in which tensile strength of the wire material is adjusted to a range of 1323 to 1666 MPa; then subjecting the patented steel wire material to a subsequent drawing process including the final drawing.
Abstract:
The invention relates to a wire cable (12) which is produced by producing the wires already in the cable configuration by layer construction. Preferably, the wires are already formed onto terminal couplings. The wire cable (12) so produced is suitable for specific purposes only. It is advantageous in that it is not influenced by variations in quality of the starting product or by variations in manufacturing parameters. The inventive wire cable (12) is used for applications where short cables are required and where their absolute regularity can be made use of. An important field of application of the inventive method is the production of samples for obtaining background data required for optimizing wire cable construction. According to the inventive method, samples of identical basic cable structure but different wire diameters and/or lay lengths of strands, a core wire and/or the cable are produced and the characteristic features of interest are determined. In the tests, different absolute values are found. However, the values in relation to each other show influences of geometry, i.e. wire diameters and lay length modifications. A comparison with samples produced according to conventional manufacturing methods can be used to find correctional variables which can be taken into consideration when required.