Another advantage derives from the machine direction or alignment of the direction of the filament with the sheet material roll which directly creates the strength properties while the presence of cross direction woven filaments of the prior art has no functional purpose and creates a barrier to bonding. Such a woven formation creates an un-level or uneven material with elongation properties that can affect structural integrity of the formed product. Level or even filaments as described in the embodiments herein, together with bonding, creates a tube such that helical stability minimises unnecessary elongation and optimising strength together with a reduction of weight and material, by comparison to prior art systems.