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Units manufacture braid

Units manufacture braid

Here you will find the terms that are used in the Cordage Institute standards and in many cases may differ from the same terms used in other areas of the textile industry or other industries. An attempt has been made to list all terms by the key noun. If a term is defined at another location in the standard an attempt has been made to show it in bold format. Terms may be used as a noun n. The higher the Becker Value the better the uniformity, color and appearance of the fiber. BRAID : n.

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EP0748781A2 - Braided shaped filamentary structures and method of making - Google Patents

A rope is a group of yarns , plies , fibers or strands that are twisted or braided together into a larger and stronger form. Ropes have tensile strength and so can be used for dragging and lifting. Rope is thicker and stronger than similarly constructed cord, string , and twine. Rope may be constructed of any long, stringy, fibrous material, but generally is constructed of certain natural or synthetic fibres.

Common natural fibres for rope are manila hemp , hemp , linen , cotton , coir , jute , straw , and sisal. Synthetic fibres in use for rope-making include polypropylene , nylon , polyesters e.

Dyneema and Spectra , Aramids e. Twaron , Technora and Kevlar and acrylics e. Some ropes are constructed of mixtures of several fibres or use co-polymer fibres. Wire rope is made of steel or other metal alloys. Ropes have been constructed of other fibrous materials such as silk , wool , and hair, but such ropes are not generally available.

Rayon is a regenerated fibre used to make decorative rope. The twist of the strands in a twisted or braided rope serves not only to keep a rope together, but enables the rope to more evenly distribute tension among the individual strands.

Without any twist in the rope, the shortest strand s would always be supporting a much higher proportion of the total load. The long history of rope means that many systems have been used to state the size of a rope. In metric systems of measurement, nominal diameter is given in millimetres. The current preferred international standard for rope sizes is to give the mass per unit length, in kilograms per metre.

However, even sources otherwise using metric units may still give a "rope number" for large ropes, which is the circumference in inches. Rope is of paramount importance in fields as diverse as construction , seafaring , exploration, sports, theatre, and communications, and has been used since prehistoric times. Winches and capstans are machines designed to pull ropes. The modern sport of rock climbing uses so-called "dynamic" rope , which stretches under load in an elastic manner to absorb the energy required to arrest a person in free fall without generating forces high enough to injure them.

Such ropes normally use a kernmantle construction, as described below. Despite the hundreds of thousands of falls climbers suffer every year, there are few recorded instances of a climbing rope breaking in a fall; the cases that do are often attributable to previous damage to, or contamination of, the rope.

Climbing ropes, however, do cut easily when under load. Keeping them away from sharp rock edges is imperative. Rock climbing ropes come with either a designation for single, double or twin use. A single rope is the most common and it is intended to be used by itself, as a single strand. Smaller ropes are lighter, but wear out faster.

These ropes offer a greater margin or security against cutting, since it is unlikely that both ropes will be cut, but they complicate belaying and leading. Double ropes are usually reserved for ice and mixed climbing, where there is need for two ropes to rappel or abseil. They are also popular among traditional climbers, and particularly in the UK, due to the ability to clip each rope into alternating pieces of protection; allowing the ropes to stay straighter and hence reduce rope drag.

Twin ropes are not to be confused with doubles. When using twin ropes, both ropes are clipped into the same piece of protection, treating the two as a single strand.

This would be favourable in a situation where there was a high chance of a rope being cut. However new lighter-weight ropes with greater safety have virtually replaced this type of rope.

The butterfly coil is a method of carrying a rope used by climbers where the rope remains attached to the climber and ready to be uncoiled at short notice.

Another method of carrying a rope is the alpine coil. Rope is also an aerial acrobatics circus skill, where a performer makes artistic figures on a vertical suspended rope. Tricks performed on the rope are, for example, drops, rolls and hangs. They must also be strong. The use of ropes for hunting, pulling, fastening, attaching, carrying, lifting, and climbing dates back to prehistoric times.

It is likely that the earliest "ropes" were naturally occurring lengths of plant fibre, such as vines, followed soon by the first attempts at twisting and braiding these strands together to form the first proper ropes in the modern sense of the word. Impressions of cordage found on fired clay provide evidence of string and rope-making technology in Europe dating back 28, years. The ancient Egyptians were probably the first civilization to develop special tools to make rope.

The use of such ropes pulled by thousands of workers allowed the Egyptians to move the heavy stones required to build their monuments. Rope and the craft of rope making spread throughout Asia, India, and Europe over the next several thousand years. From the Middle Ages until the 18th century, in Europe ropes were constructed in ropewalks , very long buildings where strands the full length of the rope were spread out and then laid up or twisted together to form the rope.

The cable length was thus set by the length of the available rope walk. This is related to the unit of length termed cable length.

This allowed for long ropes of up to yards long or longer to be made. These long ropes were necessary in shipping as short ropes would require splicing to make them long enough to use for sheets and halyards. The strongest form of splicing is the short splice , which doubles the cross-sectional area of the rope at the area of the splice, which would cause problems in running the line through pulleys.

Any splices narrow enough to maintain smooth running would be less able to support the required weight. Leonardo da Vinci drew sketches of a concept for a ropemaking machine, but it was never built.

Nevertheless, remarkable feats of construction were accomplished without advanced technology: In , Domenico Fontana erected the ton obelisk on Rome's Saint Peter's Square with a concerted effort of men, 75 horses, and countless pulleys and meters of rope. By the late 18th century several working machines had been built and patented. Some rope is still made from natural fibres , such as coir and sisal , despite the dominance of synthetic fibres such as nylon and polypropylene , which have become increasingly popular since the s.

A ropemaker at work, c. A German ropemaker, c. A piece of preserved rope found on board the 16th century carrack Mary Rose. Laid rope, also called twisted rope, is historically the prevalent form of rope, at least in modern Western history. Common twisted rope generally consists of three strands and is normally right-laid, or given a final right-handed twist. The ISO 2 standard uses the uppercase letters S and Z to indicate the two possible directions of twist, as suggested by the direction of slant of the central portions of these two letters.

The handedness of the twist is the direction of the twists as they progress away from an observer. Thus Z-twist rope is said to be right-handed , and S-twist to be left-handed. Twisted ropes are built up in three steps. First, fibres are gathered and spun into yarns. A number of these yarns are then formed into strands by twisting. The strands are then twisted together to lay the rope. The twist of the yarn is opposite to that of the strand, and that in turn is opposite to that of the rope.

It is this counter-twist, introduced with each successive operation, which holds the final rope together as a stable, unified object.

Traditionally, a three strand laid rope is called a plain- or hawser -laid , a four strand rope is called shroud-laid , and a larger rope formed by counter-twisting three or more multi-strand ropes together is called cable-laid. One property of laid rope is partial untwisting when used. An additional drawback of twisted construction is that every fibre is exposed to abrasion numerous times along the length of the rope. This means that the rope can degrade to numerous inch-long fibre fragments, which is not easily detected visually.

Twisted ropes have a preferred direction for coiling. Normal right-laid rope should be coiled clockwise, to prevent kinking. Coiling this way imparts a twist to the rope.

Rope of this type must be bound at its ends by some means to prevent untwisting. While rope may be made from three or more strands, [15] modern braided rope consists of a braided tubular jacket over strands of fiber these may also be braided.

Some forms of braided rope with untwisted cores have a particular advantage; they do not impart an additional twisting force when they are stressed. The lack of added twisting forces is an advantage when a load is freely suspended, as when a rope is used for rappelling or to suspend an arborist. Other specialized cores reduce the shock from arresting a fall when used as a part of a personal or group safety system.

Braided ropes are generally made from nylon , polyester , polypropylene or high performance fibers such as high modulus polyethylene HMPE and aramid. Nylon is chosen for its strength and elastic stretch properties. It has somewhat better UV resistance, and is more abrasion resistant. Polypropylene is preferred for low cost and light weight it floats on water but it has limited resistance to ultraviolet light, is susceptible to friction and has a poor heat resistance.

Braided ropes and objects like garden hoses , fibre optic or coaxial cables, etc. Single braid consists of an even number of strands, eight or twelve being typical, braided into a circular pattern with half of the strands going clockwise and the other half going anticlockwise.

The strands can interlock with either twill or plain weave. The central void may be large or small; in the former case the term hollow braid is sometimes preferred. Double braid , also called braid on braid , consists of an inner braid filling the central void in an outer braid, that may be of the same or different material. Often the inner braid fibre is chosen for strength while the outer braid fibre is chosen for abrasion resistance.

In solid braid , the strands all travel the same direction, clockwise or anticlockwise, and alternate between forming the outside of the rope and the interior of the rope. This construction is popular for general purpose utility rope but rare in specialized high performance line. Kernmantle rope has a core kern of long twisted fibres in the center, with a braided outer sheath or mantle of woven fibres.

In dynamic climbing line , core fibres are usually twisted, and chopped into shorter lengths, which makes the rope more elastic. Static kernmantle ropes are made with untwisted core fibres and tighter braid, which causes them to be stiffer in addition to limiting the stretch. Plaited rope is made by braiding twisted strands, and is also called square braid.

Braiding & narrow width fabrics

Braid is committed to respecting the health and safety of our employees, protecting the environment, respecting the human rights of our employees and those in the communities in which we operate, and contributing to the sustainable development of those communities. Braid Germany is determined to take pride in being responsible, respected, and acting with integrity at all times. The Braid Group are constantly investing in the expansion of their global network and in keeping with this goal are pleased announced the establishment of Braid Japan Co.

A rope is a group of yarns , plies , fibers or strands that are twisted or braided together into a larger and stronger form. Ropes have tensile strength and so can be used for dragging and lifting.

The configuration and method of manufacture combined with the proper selection of material when designed for a specific purpose enables a wire rope or cable to transmit forces, motion and energy in some predetermined manner and to some desired end. The term cable is often used interchangeably with wire rope. Sizes smaller than this are designated as cable or cords. Two or more wires concentrically laid around a center wire is called a strand.


The distinctive feature of our group is its authentic expertise in the development of special hybrid cables for numerous industrial uses. OMERIN division Berne is a major player in the field of cables for hermetically sealed units and in the design, manufacture and marketing of high temperature braiding. Our company has had authentic knowledge of braiding since , its knowledge in this respect is unchallenged by the market. We have managed to make this trade evolve over the centuries to ensure our products are always at the cutting-edge of technology. Our constantly evolving production lines and our organization ensure our responsiveness and high productivity. We have several in-house laboratories at group level for developing, testing and validating the mechanical, chemical, electric and fire resistance behaviour of our products. Our cables and sleeves are made in our plants from raw materials selected by our technical teams to ensure optimal behaviour of our products. Production of the strand, the core of the cable. It carries the electric current.

Textile technologies for the manufacture of three-dimensional textile preforms

Braid Projects was recently contracted by a Scottish based engineering company to transport, load, lash and secure a new tail gas compressor and spare rotors to Jubail, Saudi Arabia with a combined gross weight of 85,kg. The cargo operation commenced at The second smaller case was lifted also by shore crane and soft slings and secured by welded steel stopper plates and a total of 6 webbing straps with ratchet tensioners. Loading operations were completed in just over three hours. The load was approved by independent marine surveyors and the vessel sailed from Glasgow at

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Braidwell Machine Co. Send Email. Squaring Machine Get Best Quote. These machines are treasured for features like robust design, low maintenance, easy installation, durability, optimum performance and longer service life.

Metro Cable Industries is now at the apex in the list of the most renowned aluminium braids manufacturers in India. We are engaged in manufacturing a wide range of aluminium braids in various shapes, sizes and forms such as flexible, tape and strips. We can supply these aluminium braids as per the customers requirements. Our wide spectrum of aluminium braids are widely demanded by the esteemed industrial customers for its unmatched quality and inexplicable Performance. Aluminium braids manufacturers can also provide you the customization of these products as per their specific requirements and at the most reasonable prices. View Complete Details.

3D Fabrics for Technical Textile Applications

EPA1 Triaxial textile armature, process for producing traxial textile armatures and composite material part. CNA Innovative technical scheme of stranding machine for hose braided by steel wires with limits commonly reaching yield strength. CNA Vehicle-type cross-rope cable machine. CNB Method for operating a machine for plaiting reinforcing fibers. DEA1 Braiding system for belts, particularly for manufacturing visibility- and wind protection elements, has braiding station that receives grid, in which tape is woven, where braiding station has braiding unit. US Automated systems and methods for making braided barbed sutures. WOA3 Braiding mechanism and methods of use.

A&P decided to design and build the size of machine required for this application, a carrier machine, and this braided tape design was used in the manufacture of over containment units. This was the beginning of A&P's venture into developing a line of Megabraiders™, the largest line of braiders in the world.

This has been the constant throughout our trajectory and remains the policy for the future. The coating of electrical cables by means of textile braids and layers of rubber, was for a long time its main activity. Little by little, the market was creating new needs, and this was how in the 60s he oriented his products towards the conduction of fluids, creating the subtitle of Industrial and Braided Flexible Tubes , specialized in tubes with external braids in galvanized.

Braiding technology

Ray Service a. Braiding is one of the possible solutions to the protection harness. Braids are offered in a version based on polyester fibers and also in the design of tinned copper wires for EMC wiring harnesses. Braiding machine Technology of braiding machine is especially suitable for cable harnesses with complicated geometry.

This paper aims to provide an overview of the current manufacturing methods for three-dimensional textile preforms while providing experimental data on the emerging techniques of combining yarn interlocking with yarn interlooping. The paper describes the key textile technologies used for composite manufacture: braiding, weaving and knitting. The various textile preforming methods are suited to different applications; their capabilities and end performance characteristics are analysed. Such preforms are used in composites in a wide range of industries, from aerospace to medical and automotive to civil engineering.

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Written by: D. Braiding is more significant for industrial fabrics than consumer textiles and with its increasing applications, braiding is one of the major fabrication methods for composite reinforcement structures, say D Gopalakrishnan, Bhuvaneswari,. V Ramakrishnan and T Sabarinath. The limitations of the weaving, knitting and stitching processes include poor shear resistance, limited strength in the primary loading direction, and the inability to produce complex shaped parts. These shortcomings, as will be seen, are largely overcome with the adaptation of braiding.

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Two dimensional 2D woven, braided, knitted and nonwoven fabrics have been used for the fabrication of soft and rigid structural composite parts in various industrial areas. However, composite structure from biaxial layered fabrics is subject to delamination between layers due to the lack of through-the-thickness fibers. It also suffers from crimp which reduces the mechanical properties. Triaxial fabrics have an open structure and low fiber volume fraction.

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  1. Araran

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