Polyester Polyester is naturally a white fibre but it is also available in dyed black. It is the fibre that is used in the various forms of Dacron in a woven form as well as in cruising laminates produced by sailcloth manufacturing companies. Polyester is a cost effective and relatively stretchy fibre which helps to keep down the loads on sheets and attachment points due to the elasticity in the sail. The use of polyester in a Stratis GPC sail is particularly suitable for small to mid size cruising sails. The shape holding advantage that using polyester as a laminate gives over a panel sail construction is substantial over a wide wind range with the additional performance benefits from specifically engineered reef points. Polyester fibres provide performance and durability as a cost effective option to cruise laminates commonly used for performance cruising sails.
Technora Technora is a black coloured fibre originally developed to replace steel belting in tyres. It is a very durable fibre and is resistant to breakdown from either flex or UV. Technora has low stretch characteristics but does not out perform carbon or Kevlar in this field. It is particularly suitable for combining with carbon or Twaron in a sail to increase durability. Technora is a useful fibre for both Stratis GPC and Stratis GPX and works well in synergistic combinations with carbon fibre, where the membrane must go the extra mile. It’s one of our favourites for offshore racing applications.
Carbon Fibre Carbon fibre is a black fibre which has the highest strength and lowest stretch of all of the fibres we use. Carbon is used where light weight and low stretch are essential for sail performance. Carbon is often combined with other fibres in the laminate for added durability. The modulus and tensile strength of carbon fibre used in Stratis membranes exceeds that of all the other fibres but comes at a price with the brittle nature of the material resulting in far lower resistance to flex fatigue. It is however virtually impervious to UV degradation, and when used appropriately it is a very useful fibre for medium to large cruising yachts and superyachts which have boom-furling mainsails that limit the bend radius of the fibres while in storage.
Vectran/Carbon Fibre Combo Vectran mixes well with Carbon fibre and adds significant durability to a carbon fibre sail. The carbon is used in GPC membranes primarily as the significant load bearing fibres while the Vectran, because of its resistance to strength loss created by flex, adds durability to the membrane. This application is perfect for highly loaded sails such as large cruising yachts and superyachts. Whether your boat is a sailing dinghy or a 56 metre superyacht; we can engineer the ideal sail to suit your needs.