Abstract:
It is provided that a braid which has high dimensional stability even in long-term high temperature storage and which fluctuates little in physical properties with the lapse of time. And it is provided that fishing lines, nets, ropes, and protective covers, and bulletproof materials using the same. A braid comprising a polyethylene fiber or polyethylene tape which has an intrinsic viscosity [η] of not less than 5.0 dL/g and not more than 30 dL/g and contains not less than 90% of ethylene as a repeating unit thereof, wherein a thermal shrinkage percentage is not less than 0.45% and not more than 8% under an environment of 80° C. for 240 hours.
Abstract:
Rope (4) having an eye (2). The rope (4) comprises a first rope portion (8) and a second rope portion (10). The first rope portion (8) and the second rope portion (10) are spliced into each other for forming a spliced connection for obtaining the eye (2). The first rope portion (8) and the second rope portion (10) are formed from an end portion of the rope (4).
Abstract:
An elastic link for adjusting the distance between two members, at least one of which is mobile, is characterized in that it includes at least two elastic yarns each attached through one of the opposite ends thereof to two points distant from each other of an intermediate portion of a strap located between the extreme portions of the latter, under conditions such that when a tensile force is applied on said strap, the first elastic yarn is stretched first, the second elastic yarn being then stretched based on the magnitude of the applied tensile force.
Abstract:
An elongated steel element (12) with a martensite, tempered martensite, bainite or sorbite structure has a polymer coating (16) with a thickness lower than 20 μm immediately upon the elongated steel element (14). The friction coefficient and corrosion resistance are both improved by the polymer coating at a lower cost.
Abstract:
An annular metal cord includes an annular core portion and an outer layer portion. The annular core portion is formed by connecting together both ends of a first strand material which is made up of six twisted first metal filaments. The outer layer portion is formed by winding spirally a second strand material which is made up of six twisted second metal filaments around the annular core portion. The second strand material is wound at a predetermined winding angle relative to a center axis of the annular core portion, and a winding initiating end portion and a winding terminating end portion are connected together. As a result, the breaking strength of the annular metal cord can be made large, and the production thereof can be facilitated.
Abstract:
High strength polyethylene fibers and their applications, for example, chopped fibers, ropes, nets, ballistic materials or items, protective gloves, fiber reinforced concrete products, helmets, and other products obtained therefrom, in which the fiber is characterized in that: it contains a high molecular weight polyethylene consisting essentially of a repeating unit of ethylene; it has an intrinsic viscosity number of 5 or larger and an average strength of 22 cN/dtex or higher; and the measurement of the fiber by differential scanning calorimetry (DSC) exhibits a temperature-increasing DCS curve having at least one endothermic peak over a temperature region of 140null C. to 148null C. (on the low temperature side) and at least one endothermic peak over a temperature region of 148null C. or higher (on the high temperature side) or the number of frictions until the fiber is broken in an abrasion test according to method B for measuring abrasion resistance in the Testing Methods for Spun Yarn (JIS L 1095) is 100,000 or larger.
Abstract:
Rope (4) having an eye (2). The rope (4) comprises a first rope portion (8) and a second rope portion (10). The first rope portion (8) and the second rope portion (10) are spliced into each other for forming a spliced connection for obtaining the eye (2). The first rope portion (8) and the second rope portion (10) are formed from an end portion of the rope (4).
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:
Lien élastique destiné à permettre la régulation de la distance comprise entre deux éléments dont l'un au moins est mobile, caractérisé en ce qu'il comprend au moins deux brins élastiques (1, 2) fixés, chacun par l'intermédiaire de ses extrémités opposées, en deux points (6-7; 6-8; 6-9; 6-10) distants l'un de l'autre, d'une portion intermédiaire (5a) d'une sangle (5) comprise entre les portions extrêmes (5b, 5c) de cette dernière, dans des conditions telles que lorsqu'on exerce une force de traction sur ladite sangle, un premier brin élastique (1) se trouve d'abord étiré, le deuxième brin élastique (2) se trouvant ensuite étiré, en fonction de l'importance de la force de traction appliquée.
Abstract:
An improved starter pull cord for an internal combustion engine having significantly increased stiffness, resistance to wear, and strength, the starter pull cord being comprised of rope having high modulus fibers selected from the group consisting of liquid crystal polymer (LCP), aramid, and high-modulus polyethylene (HMPE). The higher stiffness of the high modulus starter pull cords of the present invention translates to greater impetus during the act of pull starting the engine, which is apt to start more quickly than with starter pull cords of the prior art. The increased strength of the high modulus starter pull cords translates to fewer breakages over the lifetime of an engine and therefore increased reliability.