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AssigneeSidel Participations
InventorsDenis Gillet, Regis Leblond, Alexandre Toutoux, Didier Santais
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The invention relates to blowing equipment (1) that uses a pressurised fluid for blowing vessels from preforms of a thermoplastic material and including a body (3) and a neck (6), wherein said equipment comprises a blowing mould (5) with a moulding cavity (4) in which the body (3) of a preform (2) can be placed, said mould (5) including an upper surface (7) from which protrudes the neck (6) of a preform (2) once the body (3) of said preform (2) is placed in the cavity (4), and wherein said equipment (1) also includes a nozzle (8) with an end (9) shaped so as to be placed in functional sealed relation with the protruding neck (6) of the preform (2). The end (9) of the nozzle (8) is connected to a means (12) for degassing the blowing fluid, capable of bearing tightly on the upper surface (7) of the mould (5) so as to define an inner volume (13) in which the blowing fluid blown under pressure into the preform (2) can be discharged after the preform (2) blowing operation. The equipment includes a degassing means capable of expanding the blowing fluid around the blowing cavity, wherein said means includes a plurality of channels (28) arranged around said blowing cavity, said channels (28) having one side opening into the inner volume of the degassing means (12) while the other side gives into an annular channel (29) for discharge into the atmosphere.
Blowing equipment, using a pressurized fluid, of vessels using preforms made of thermoplastic material, and comprising a body and a neck, said equipment comprising a blowing mold with a molding cavity wherein is able to be placed said body of a preform, said mold having an upper surface from which is able to protrude the neck of said preform once the body of the latter is placed in said molding cavity, said equipment further comprising a nozzle with an end shaped in order to be placed in functional sealed relation with said neck of the protruding preform, said end of nozzle being attached to the means of degassing of the blowing fluid capable of bearing tightly on said upper surface of the mold by forming an inner volume wherein the blowing fluid blown under pressure in the preform is able to be discharged after the blowing operation of the preform,
Method for blowing using a pressurized fluid of vessels using preforms made of thermoplastic material and comprising a body and a neck, the body of said preform able to be placed in a molding cavity of a blowing mold belonging to a blowing equipment, said equipment further comprising a blowing nozzle having an end shaped in order to be placed in functional sealed relation with said neck of a preform which is protruding from an upper surface of said mold, said method comprising at least the following steps of:
Dependencies are inferred from the claim text.