SU791817A1 - Rope - Google Patents

Description

The invention relates to the field of production of products such as a rope from synthetic polymer-coated yarns, which can be used in various industries: instrument-making, radio-technical, light, etc., for example, for transmitting movement in nodes and mechanisms, for converting and summing movements in printing devices.

A cable is known having a core of polyamide or polyester longitudinal, parallel, twisted or braided threads, entwined with threads of the same polymers. The core entwining can be carried out helicoidally with one or “several synthetic threads, and the direction of entrapment with each thread should be opposite to the previous entwined layer. The upholstery is glued to the core using a solution of nylon in organic solvents, which, in addition, forms a polymer coating on the surface of the product [1]. The disadvantages of the product are its low resistance to many. multiple deformations) large tensile elongation and considerable creep.

The aim of the invention is to reduce the tensile elongation and creep and increase resistance to the action of multiple strains of the cable. This goal is achieved by the fact that in a known product having a core of parallel, twisted or woven synthetic fibers, entwined with one or more synthetic fibers of flexible chain polymers in one or more layers, and the polymer coating, the core is made of threads of rigid chain polymers based on aromatic polyamides - polyparabenzamide or polyterephthalamide, and the polymer coating is polyurethanesemicarbazide or polyurethaneurene.

The invention is illustrated by examples of specific performance of the cable.

Example 1

The core of the cable is made by twisting with an intensity of 3 00 · <

• + 200 cr / m of ten strands of polyterephthalamide, linear density 14.3 tex and twist 450 + 50 cr / m each.

The core entrapment is continuous, turn to turn, in one layer • 3 791817 4 with four nylon twisted threads with a twist of 160 + 20 cr / m and a linear density of 93.4 tex each. Upholstery intensity 700 + 50 turns per meter. Polymer Coating is made of polyurethaiosemicarbazide. The coating thickness is 150-200mk.

PRI me R 2,

The core of the cable is made by twisting with an intensity of 300 + + 20 cr / m of ten threads of polyterephthalamcide with a linear density of 14.3 tex and twists of 100 + 10 cr / m each. The core entrapment is continuous, turn to turn, in two layers. Each layer is formed by eight nylon threads with a twist of 160 + 10 cr / m and a linear density of 29 tex each. The direction of twist of the upholstery of the second layer and the direction of its curling are opposite to the first. Upholstery intensity -1400 + 100 turns per meter.

The polymer coating is made of polyurethaneurene. The coating thickness is 150-200 microns.

Example 3

The core of the cable is made by twisting with an intensity of 300 + + 20 cr / m twelve strands of polypair, benzamide with a linear density of 14.3 tex and twist 100 + 10 cr / m each.

The core entwining is made continuous, turn to turn, with four nylon twisted threads with twist

160 + 20 cr / m and a linear density of 29 tex each. Upholstery intensity 700 ± 50 turns per meter.

The polymer coating is made of polyurethanosemicarbazide.

PRI me R 4. '

The cable as in example 3, the polymer coating is made of polyurethaneurene.

Claims (4)

The invention relates to the field of producing cable-type products from synthetic coated polymeric yarns, which can be used in various industrial fields: instrument-making, radio engineering, light industry, etc., for example, for transmitting movement in nodes and mechanisms, for transformations and summation of movements in printing devices. A cable is known, having a core of polyamide or polyester longitudinal, parallel, twisted or braided yarns entwined with the same polymers. A gray winding can be made helicoidally with one or several synthetic threads, and the direction of winding with each thread should be reverse relative to the previous winding layer. The padding is adhered to the core with a solution of nylon in organic solvents, which, in addition, forms a polymer coating on the surface of the product. The disadvantages of the product are low resistance to the action of multiple deformations, large tensile elongation and significant creep. The aim of the invention is to reduce tensile elongation and creep and increase resistance to the action of repeated deformation of the cable. The goal is achieved by the fact that in a well-known product, having a core of parallel, wound or woven synthetic yarn, entwined with one or several: synthetic threads of flexible-chain polymers in one or more layers, and the polymer coating, the core is made of aromatic polyamides - polyparabenzamide or polyterephthalamide, and a polymeric coating of polyurethane-semicarbide or polyurethane. The invention is illustrated by examples of a specific embodiment of a cable. Example 1. The core of a cable is made by twisting with an intensity of 300 −i + 200 kr / m ten threads of polyterephthalamide, a linear density of 14.3 heke and twist 450 ± 50 kr / m each. The core winding is made continuous, round to round, in one layer with four nylon twisted yarns with a twist of 160 + 20 kr / m and a linear density of 93.4 tex each. The intensity of winding 700 + 50 turns per meter. The polymer coating is made of polyurethane semicarbazide. Coating thickness is 150-200m. PRI me R 2. The core of the cable is made by twisting with an intensity of 300 + + 20 kr / m ten threads of 14.3 tex of polythyrephthalamalt of linear density and twist 100 + 10 kr / m each. The winding of the core is made continuous, round to round, in two layers. Each layer is formed by eight kapron threads with a twist of 160 + 10 kr / m and a linear density of 29 tex each. The direction of twist of the wrapping threads of the second layer and the direction of its wrapping are opposite to the first. The wrapping intensity is –1400 ± 100 revolutions per meter. Polymer coating is made of polyurethane. The coating thickness is 150-200 microns. Example 3. The core of the cable is made by twisting with an intensity of 300 + + 20 kr / m twelve strands of 14.3 tech benzamide polypara and twisting 100 ± 10 kr / m each. The core was wrapped roundly with a coil to a coil, with four capro new twisted yarns with a twist of 160 + 20 kr / m and a linear density of 29 tex each. The intensity of the winding 700 t 50 turns per meter. The polymer coating is made of polyurethane semicarbazide. PRI me R 4. The cable as in example 3, the polymer coating is made of polyurethane. The invention The cable is a core made of parallel, twisted or woven synthetic yarns, helicoidally entwined with one or more low-modular, highly elastic yarns of flexible-chain polymers, having an external polymer coating, characterized in that, in order to reduce elongation and creep increase in resistance to the effect of repeated deformations of the cable, the core is made of synthetic filaments based on polyparabenzamide or polyterephthalamide, and the outer imernoe coating is poliuretanosemikarbazida or poliuretanurelena. Sources of information taken into account in the examination 1. Patent of England No. 1228171, D 1 T, 1971.