Dura-Line support strands are a high-tensile polyamide (PA6) with low-elongation, compact cross section, and high breaking strength. This material is idea for orchards, vineyards, shade covers, Ocean Farming, netting and fencing.
Dura-Line's excellent properties are based on the use of a high-quality raw material and on a rigorous production procedure. A UV and eather-resistant line, Dura-Line users enjoy economical and long-lasting service.
Other applications of Dura-Line support material include shading and roofing installations for greenhouses. Unlike steel and aluminum, it has excellent stability against heat with effectively prevents melting or damage to the plastic film covers in greenhouses.
The Dura-Line Difference:
High tensile strength and low elongation/stretch. Maximum UV resistance. Melting Point – 419 F. Softening Temp – 356 F.
Dura-Line is resistant to lightning damage and does not conduct electricity. In irrigated vineyards/nurseries the use of Dura/Line minimizes the probability of lightning strikes. The conductivity of metal wire often draws lightning and destroys irrigation pumps/systems and established vines.
Dura/Line is 7x lighter than same gauge high tensile wire. Dura/Line has a runnage of 34.72yds./lb. versus only 5.36yds./lb. for steel. Weight savings translates into easier handling and significant transport savings.
Dura/Line maintains its appearance year after year and tensioned correctly does not sag. Dura/Line can be installed with steel or wooden post systems. The flexibility of Dura/Line allows the catch wires to be moved out of the way to facilitate pruning or moved to higher positions on the post to accommodate cane growth.
The black color of Dura/Line collects solar radiation more effectively than steel and heats significantly faster in cooler climates.
No expansion and contractions of the line through seasonal heating and cooling cycles. No need for re-tensioning. The low thermal coefficient of Dura/Line prevents frozen wire contact damage to the vine.
Dura/Line boasts high resistance to all chemical sprays and is impervious to sunlight, all agricultural fertilizers, herbicides, fungicides, pesticides, phosphate, all hydrocarbons (diesel fuels, petroleum, paraffin, oils) and organic solvents.
Dura/Line will not rust, rot or corrode. Dura/Line is resistant to salt water and is ideal for use in areas subject to flooding and high salt areas, particularly coastal regions due to its non-corrosive properties.
Under mechanical harvesting operations, Dura/Line translates the vibrational energy of the harvester 10% more efficiently than steel. This feature allows the mechanical picker to be turned down and placed on a lower, softer setting with more vibrations, preserving fruit conditions and quality.
Dura/Line requires no additional attachment devices to the main posts. This material con be tied and knotted for end post attachment.
The following main line diameter recommendations are based on standard installation characteristics from Dura/Line vineyards in Italy. Main line recommendations are derived from a combination of post spacing and anticipated fruit production per hectare (2.5 acres):