Abstract:
Le câble métallique multi-torons à deux couches comprend: - une couche interne (C1) constituée d'un toron interne (Tl), - une couche externe (C2) constituée de L>1 torons externes (TE). Chaque toron interne et externe (Tl, TE) comprend : - une couche interne (12, 12') respectivement constituée d'un fil interne (F1, F1'), - une couche intermédiaire (14, 14') respectivement constituée de M, M' fils intermédiaires (F2, F2'), et - une couche externe (16, 16') respectivement constituée de N, N' fils externes (F3, F3'). Le diamètre Dl du toron interne (Tl) est supérieur au diamètre DE de chaque toron externe (TE). Chaque fil externe (F3) présente un diamètre d3 supérieur au diamètre d3' de chaque fil externe (F3). La couche externe (16') de chaque toron externe (TE) est insaturée.
Abstract:
A hybrid rope constructed of a plurality of strands, wherein each strand is constructed of a fiber center, a jacket surrounding the fiber center, and a plurality of wires surrounding the jacket. The fiber center can be constructed of one or more high-strength synthetic fibers or yarns. The jacket can be constructed of polypropylene, thermoplastic polyurethane, high- density polyethylene, linear low-density polyethylene, nylon or other similar materials. The jacket can have a braided or woven design and adds a protective layer between the fiber center and the wires. The wires can be constructed of high-strength steel wires, galvanized steel or stainless steel. The fibers or yarns that make of the fiber center are twisted to lay right and then covered with the jacket. The wires then surround the jacket and are twisted to lay to the left. This creates a torque-balanced condition of the hybrid rope.
Abstract:
A steel cord (20) comprises a plurality of steel filaments (22, 24) arranged in parallel to the longitudinal axis of the steel cord (20) without twisting. The steel cord (20) further comprises a wrapping filament (26) twisted around the steel cord (20). Each of said steel filaments (22, 24) is a flat wire having flat surfaces. The steel filament (24) near the center of the steel cord (20) has a bigger width than the steel filaments (22) further away from the center of the steel cord (20) such that the cross-section of said steel cord (20) approximates an oval shape with the bending stiffness around the shorter axis of the oval shape being greater than the bending stiffness around the longer axis. In a tire, the steel cord being used as a reinforcement, the longer axis being arranged perpendicular to the radial direction of the tire.
Abstract:
The invention is directed to materials comprising polylactic acid (PLA). In accordance with the invention, PLA material is stretched in at least the machine direction at a total stretch ratio of 1:4 or more. These materials have excellent biodegradability and find use in horticulture, in particular for tying up plants or parts thereof.
Abstract:
According to the invention, the elastic link for adjusting the distance between two members, at least one of which is mobile, is characterised in that it comprises at least two elastic yarns (1, 2) each attached through one of the opposite ends thereof to two points (6-7; 6-8; 6-9; 6-10) distant from each other of an intermediate portion (5a) of a strap (5) located between the extreme portions (5b, 5c) of the latter, under conditions such that when a tensile force is applied on said strap, the first elastic yarn (1) is stretched first, the second elastic yarn being then stretched based on the magnitude of the applied tensile force.
Abstract:
The invention relates to a multilayered material sheet comprising a consolidated stack of unidirectional monolayers of drawn ultra high molecular weight polyolefine. The draw direction of two subsequent monolayers in the stack differs. Moreover the thickness of at least one monolayer does not exceed 50 µm, and the strength of at least one monolayer is comprised between 1.2 GPa and 3 GPa. The invention also relates to a ballistic resistant article comprising the multilayered material sheet and to a process for the preparation of the ballistic resistant article.
Abstract:
A cable (11) is provided comprising a steel cord (12) and a polymer material (15).The steel cord (12) has a diameter less than 2.5mm, and is coated with the polymer material (15). The cable (11) has a permanent elongation of less than 0.05 % at a permanent force of 50N, after being subjected to a force of 450N. Further, a window elevator system (300) comprising such a cable (11) is provided.
Abstract:
A method for making ropes includes pressing of rope elements (1) into a shaped profile on a mandrel (2) and their subsequent twisting into a rope. Each element (1) before its twisting into the rope is periodically pressed, segment by segment, along its full length while alternating pressing and idle periods on the mandrel (2). A rope twisting machine for implementing the above method comprises, consecutively mounted on a base, a rotor (3) carrying the elements (1) of the rope, a mandrel (2) rigidly connected to the rotor (3) and provided with shaped grooves (4) and pressing rolls (6) mounted in a cage (5), the axes of the rolls being placed in the planes passing through the axis of rotation of the rotor (3). The cage (5) is mounted coaxially in relation to the mandrel (2), said cage (5) together with the rotor (3) being mounted with the possibility of their relative rotation.