Patent ID: 8393284

Claim:
Membrane body ( 1 ) for producing sails, comprising at least a first panel ( 10 ) and a second panel ( 11 ) connected together in an adhesive manner by respective facing faces ( 12 , 13 ), and a plurality of tie rods ( 16 ) arranged stably between the panels ( 10 , 11 ) according to a set pattern; each said tie rod ( 16 ) having respective end portions ( 17 , 18 ); said membrane body further comprising insulation means ( 15 ) arranged between the panels and associated with each said tie rod ( 16 ) to leave said tie rod ( 16 ) longitudinally free between said panels ( 10 , 11 ); said tie rod ( 16 ) being suitable for resisting a dual tensile membrane stress acting on each of said pair of panels ( 10 , 11 ), and keeping said panels ( 10 , 11 ) substantially free of tension during use; said second panel ( 11 ) covering said face ( 12 ) of said first panel ( 10 ) in such a way that said second panel ( 11 ) adheres integrally to said first panel ( 10 ), and said insulation means ( 15 ) being formed of a same material as said tie rod ( 16 ).