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New HP2G yarn offers excellent thermal insulation
Feb '12
Working in partnership with Zwickauer Kammgarn GmbH and Helmut Peterseim Strickwaren GmbH in Mühlhausen, researchers at the Hohenstein Institute in Bönnigheim have developed an innovative new type of yarn for knitted textiles.

The new hybrid yarn HP2G combines the benefits of synthetic fibres with those of wool fibres. This combination guarantees excellent thermal insulation, while sweat is transported away efficiently and the textile dries quickly. Furthermore, the yarn is not prone to pilling, which is bound to please consumers. This all means that fashion garments made of the new hybrid yarn are easier to look after, do not suffer from felting and look as good as new even after being worn for a long time.

Project leader Martin Harnisch from the Hohenstein Institute sees excellent potential for the newly developed yarn, especially for sportswear: "Garments made from this yarn have very good sweat management properties and at the same time provide excellent thermal insulation. Being properly protected from the cold is really important, especially during rest periods after strenuous physical activity, when it has been found that the body loses a great deal of heat."

"Endurance athletes such as runners and cyclists will particularly benefit from this innovation because they will find that it helps prevent the unpleasant sensation of cooling down and shivering after exercise, what is called 'postexercise chill', which can be damaging to the health."

Even for less strenuous sports such as golf or hiking, or in certain jobs, clothing made from the newly developed yarn has great potential. Knitted textiles have the ability to trap a great deal of air, which, when the fibres are combined with wool, gives good thermal insulation and enables them to absorb a great deal of moisture.

However, when the moisture content reaches about 33%, which is easily achieved during physical exertion, pure wool does not feel comfortable any more. The liquid perspiration cannot evaporate from the skin and is absorbed by the wool fibres. Very damp wool creates an unpleasantly wet, cold sensation on the skin.

This is where synthetic fibres can come in useful. The advantage of them is that they usually do not absorb water, or only very little. This means that they can wick the liquid sweat away from the skin. The innovative hybrid yarn HP2G combines the positive characteristics of synthetic and natural fibres: it absorbs sweat quickly and transports it away from the body.

That keeps the wearer as comfortable as possible, with their skin feeling dry. During light exercise or after a long period of strenuous physical exertion, it also offers the necessary thermal insulation, and so keeps the body temperature constant. The industrial companies involved in the project have created a new and complex textile family based on the functional yarn, ranging from jackets and pullovers to functional accessories such as caps, hats, wrist-warmers and gauntlets.

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