Abstract:
The present invention is related to an apparatus and method for a carrier rope for use in the transport of paper webs in paper threading machine systems. The carrier rope constructed in accordance with the invention comprises a multi filament yarn assembly (A) having an initial twist, a composite yarn assembly (B) comprising mono filament yarn imparted around the multi filament yarn assembly via a second twist, wherein the multi filament yarn assembly (A) is not further twisted, a braided plait assembly (C) comprising a braid of composite yarn assemblies, and a carrier rope (D) comprising a braid of braided plait assemblies.
Abstract:
The instant invention is a rope. This rope includes a blend of filaments including a first filament, and a second filament. The second filament is fluorocarbon polymer filament.
Abstract:
A high strength abrasion resistant surgical suture material with improved tie down characteristics is color coded for visualization and identification purposes. The suture features a multifilament cover formed of strands of ultra high molecular weight long chain polyethylene braided with polyester, nylon or a bioabsorbable material. Selected nylon fibers in the cover are provided in a color contrasting with the other cover fibers to provide an identifiable trace. The cover surrounds a core formed of twisted strands of ultrahigh molecular weight polyethylene. The suture, provided in a #2 size, has the strength of #5 Ethibond, is ideally suited for most orthopedic procedures, and can be attached to a suture anchor or a curved needle.
Abstract:
In the present invention, a gel-spun UHMWPE is subjected to secondary processing to reduce the concentration of the spin solvent(s) to acceptable levels before or after the fiber is woven with other fibers to form a suture. In the case of the spin solvent Decalin, it is well known that concentrations, in the fiber, of greater than 100 parts per million (ppm) render UHMWPE materials non-compatible with human tissues. Thus, UHMWPE materials that are to remain within the human body must have a Decalin concentration below 100 ppm to render them biocompatible. If desired, the suture may be braided about a core. The number of filaments in a single suture can vary between 4 and 24. Additionally, where a core structure is employed, up to 6 separate core filaments may be employed. Other materials such as PTFE, FEP, PFA, PVFD, PP, polyester, nylon, or aramid may be employed for the core and/or cover so long as spin solvent level has been reduced to below 100 ppm before or after twisting or braiding.
Abstract:
Mesh bars (35, 283) of a trawl (13, 263) include at least a portion having a corkscrew-shaped pitch which exhibits a hydrofoil-like effect. Such mesh bars (35, 283) are preferably formed from a material having a substantially incompressible cross-sectional shape. By appropriately selecting the lay and leading edge of mesh bars (35, 283), movement of the trawl (13, 263) through the water entrained environment creates a pressure differential and lift across that portion of mesh bars (25, 283) which exhibit the hydrofoil-like effect. The lift thus created increases performance characteristics of the trawl (13, 263) including increased trawl volume, improved trawl shape, and reduced vibration, noise, and drag. Obtaining the greatest improvement of trawls (13, 263) requires controlling a pitch range for twisted product strands (e.g. twisted ropes) (36, 37), and for straps (284) forming mesh bars (35, 283). For straps (284), control of a width to thickness ratio also significantly affects performance of the trawl (13, 263).
Abstract:
A method for forming a braided rope. Twisted yarns are first braided together to form braided strands, and the braided strands are then braided together to form the rope. The diameter of the individual twisted yarns is kept to a minimum, thereby reducing the number of twisting stages required to form the yarns and also permitting heat stretching treatment using existing systems. Moreover, in-line connections can be made within the individual strands using conventional braided rope splices, which both eliminates the need to use long splices during manufacture of the rope and enables individual strands to be spliced in the field to so as to repair snags, cuts, and other service damage without having to replace an entire length of the rope.
Abstract:
A multi-strand nylon rope having improved abrasion resistance is comprised of a plurality of strands. Each strand is comprised of a plurality of yarns wherein each yarn is formed of a predetermined number of filaments. The filaments of each yarn are twisted together to form a yarn of a predetermined size, the twist direction being opposite that of the final ply yarn direction. For a right lay rope a sufficient number of filaments are twisted together in the left or "S" direction to produce a yarn of a predetermined size. Three or more yarns prepared in this manner are then plied or twisted together in the opposite or right direction. The cover for each strand is formed of alternate yarns of standard (i.e. round) and oblong filaments, respectively, the oblong filaments having a modification ratio of three, forming a rope having increased abrasion resistance, a hand and feel that is not stiff or unmanageable and which resists strand-to-strand wet abrasion.
Abstract:
A rope for traction of a double structure of a core member coated with a sheath member, in which said core member comprises a molecularly oriented shaped article of an ultrahigh molecular weight polyolefin, and said sheath member comprises a braid. The rope proposed herein is light in weight, floatable on water, easy to handle and excellent in safety to human bodies and weatherability.
Abstract:
A composite fiber sewing thread comprising a central core having one or more strands of an inorganic or organic fiber or blends thereof, and an outer jacket enclosing the core and having the form of a tubular body of braided strands of continuous ceramic fibers is disclosed. The thread is useful in very high temperature applications.
Abstract:
A pintle wire for high load hinge connections, especially for textile webs and transmission belts, and method of making same, according to which continuous synthetic fibers are braided individually or in strands and are embedded in high wear resistant and hydrolysis resistant duroplastic material and interconnected thereby.