Speciality plastic and fibre products supplier Filtrona said it well placed for further growth despite economic uncertainty as it posted a rise in revenues and profits.In the six months to 30 June, revenue jumped to £268.6m from £247.6m over the same period the previous year, while pre-tax profits rose to £39.5m from £34.6m. The dividend was raised by 10% to 3.3p from 3p."Whilst mindful of the current economic uncertainty, given the current platform and momentum in the business, combined with an accelerated drive on balanced growth across all divisions, the company is well positioned for continued positive development through the second half of 2011 and into the next financial year," chief executive Colin Day said.Filtrona makes filters for cigarettes, components for printer cartridges and a host of other products.At 10.30am, shares in the company were up by 5% at 330.7p.RG