Features

Why Choose Dyneema® Ropes

English Braids are proud to be the UK partner for Dyneema® fibre. As a partner, we are confident that we can produce ropes to satisfy many different markets and applications each with their own unique challenges.


Dyneema® fibre is the premium brand of Ultra-High Molecular weight Polyethylene (UHMwPE) and was developed in the Netherlands over 20 years ago and has established the confidence of manufacturers in many industries. 

Dyneema® has been incorporated into a variety of well-known household items over the years to provide an extra resistance to water, chemicals and UV and at the same time providing a light weight solution which is 15 times stronger than steel wire.

 

Industrial Dyneema® Applications

At English Braids we are constantly trying to push the value of Dyneema® in the Industrial sector with many customers initially considering traditional steel wire solutions. This is a very segmented market with Dyneema® adding value to a variety of applications:

Commercial Marine

Made up from a combination of both onshore and offshore products, Dyneema® products can be designed bespoke for unique projects for applications in extreme environments.

Subsea

Dyneema® ropes can often be seen as the ideal solution for subsea applications where high strength and low stretch properties are key. In addition, Dyneema® ropes can promote a safer working environment with Dyneema® rope having low energy storage properties which removes the risk of recoil which is traditionally associated with steel wire.

Winching

The 4X4 market is seen as an early adopter for synthetic ropes with the product being easier to handle as well as being safer. The English Braids D-Tract range utilities the properties of the ultra-low stretch Dyneema® DM20 fibre to enable the product to withstand challenges that are often associated with recreational winching.

 

Marine Dyneema® Applications

Dyneema® ropes are considered to be the premium products within the English Braids product portfolio with products available for professional racing yachtsmen to avid club racers, in addition, English Braids can offer smaller diameter Dyneema® ropes ideal for the Dinghy market.

Maximise the LIFE of your lines

Dyneema® fibres have long been associated with low-creep properties. This means that a lot of the time typical synthetic Polyester ropes have to be re-tensioned otherwise this can result in a complete rupture of the rope.

Maximise the STRENGTH of your lines

Dyneema® is world renowned for being the “worlds strongest fibre” by being 15 times stronger than steel (weight for weight basis). This is achieved by Dyneema® having long molecular chains which are able to transfer load more effectively.

The strength of the Dyneema® lines is an important factor for any yachtsman. This allows the user to keep weight on board to a minimum due to a lower diameter being required to achieve a high break load when compared to Polyester products. Furthermore, Dyneema® ropes allow the yachtsman to feel the boat respond instantly due to low-stretch characteristics of the finished rope.

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Introducing the Dyneema® range

Dyneema Ropes and Fibres

English Braids is a UK Dyneema® partner and manufacturer of ropes in the UK. Dyneema® forms part of the business overall strategic direction which is aligned to technical products delivered with first class customer service.

 

Through an intensive R&D process, DSM have developed an extensive range of fibres that are aligned to specific market challenges. These fibres are outlined below, in order to help the customer choose the correct fibre and product.


Dyneema® SK38

English Braids promotes the use Dyneema SK38 primarily into the mid-range yachting market. Although the fibre has a lower tenacity than some of the other grades, the conversion process is beneficial to the overall finished product, delivering a rope that has both high strength and low stretch characteristics. Whilst this is suitable for the mid-market, it should be noted that the rope will work at a higher percentage of the breaking load than some of the more advanced fibres. Although this will equate to slightly higher elongation in real world applications, any end user moving from polyester will enjoy the performance benefits.

 

Dyneema® SK75 vs SK78

Dyneema® SK75 and SK78 are both used in the mainstream premium HMPE rope market, with some subtle differences in application. Both grades are 25% stronger than Dyneema® SK38, therefore allowing a potential reduction in diameter, or alternatively an increase in safety factor for the same diameter. Dyneema® SK78 tends to be used in applications where resistance to creep is important, with significantly more resistance than SK75 or cheaper alternatives. Often it is the creep lifespan that becomes the critical factor in the long term durability of the rope. Through the use of, both coatings and Dyneema® SK78, it is possible to achieve increased life expectancy of ropes within harsh operating conditions.

Dyneema® SK99

Dyneema® SK99 is the strongest of all Dyneema® fibres commercially available. Ropes made with Dyneema® SK99 demonstrate an increase in strength of 15% to 20% above the SK78 fibre. This benefits the user through further reduction in weight or diameter for the same working loads. Dyneema® SK99 represents the best of class rigging for technical applications and ultimate strength in application.

 

Dyneema® DM20

The development of the DM20 fibre has been focused on minimal creep above all other characterises. In order to achieve this the tenacity is slightly lower than SK78 although this is rarely noticed by end users due to the manufacturing process for ropes using these fibres. In applications where creep and extension are paramount DM20, and the English Braids XPS process, should be the first choice. This specialist fibre provides engineers and designers with the ability to use synthetic material where only steel, polyester or aramids have been previously possible. Ropes made with Dyneema® DM20 provide a real alternative for longer term applications where stability is critical.

As a Dyneema® partner, English Braids has access to, and works with, all of the above fibres. Much of the product range is held in stock for immediate delivery. However, due to the nature of some of the projects, English Braids would look to both design and make to order certain diameters and lengths as required.

Why heat treatment is essential to your ropes

With a multitude of differing constructions and manufacturing processes, making a rope can involve a complex set of processes. The balance of these processes results in a rope with the characteristics that are aligned to the end use.

Read more: Why heat treatment is essential to your ropes