PROCESS FOR MANUFACTURING A PLASTIC FUEL TANK

摘要

Process for manufacturing a plastic fuel tank equipped with an internal line by moulding a parison using a mould comprising two cavities and a core, said process comprising the following steps: 1. the parison is introduced into the mould cavities; 2. the core is introduced inside the parison, said core having first been fitted with the line; 3. the mould is closed so that the cavities come into leaktight contact with the core; 4. the parison is pressed against the cavities by blowing through the core and/or applying a vacuum behind the cavities; 5. the line is fastened to the parison over at least two points using a device attached to the core; 6. the mould is opened to withdraw the core; and 7. the final moulding of the parison is carried out by blow moulding (by injecting a pressurized fluid inside the parison) and/or thermo forming (by applying a vacuum behind the cavities), in which the line comprises, between its fastening points, a free length that is capable of coming into contact with the parison and/or with an accessory found thereon when the mould is closed, and according to which, during step (5), at least one intermediate fastening point is created using a device attached to the core.