Patent ID: 7923498

Claim:
A multiple-coating method of manufacturing a layered elastomeric film comprising the steps of: (i) dipping a mould into a coagulant containing calcium ions at a concentration of between 1% and 10% by weight, followed by (ii) drying or partially drying the coagulant-dipped mould, (iii) dipping the coagulant-coated mould into a composition for producing an elastomeric film having a total solids content of between 5% and 20% and a temperature of between 25° C. and 45° C. for a dwell time of between 1.0 and 10.0 seconds to produce a layer of elastomeric film composition on the mould, (iv) drying the elastomeric film composition, (v) dipping the mould into a composition for producing an elastomeric film having a total solids content of between 5% and 20% and a temperature of between 25° C. and 45° C. for a dwell time of between 1.0 and 10.0 seconds to produce a further layer of elastomeric film composition on the mould, directly on the preceding elastomeric film layer; (vi) optionally repeating the drying step (iv) and the further dipping step (v), and (vii) drying and curing the layered elastomeric film, wherein the average thickness of each layer is between 6% and 90% of the average thickness of the total layered elastomeric film, and the average thickness of the total layered elastomeric film is between about 0.01 mm and about 0.3 mm.