(57) The bottle is of a single-piece and comprises a main body (2) with a hermetically
closing part (6) delimited by a weakening (7) of the material adjacent to the periphery
of the mouth. The bottom part is constituted by a sheet of a thermoplastic material
joined to the bottle body by thermowelding. The bottle is closed with a screw-on-cap
(8), or a top (12), which are joined to the closing part (6) by means of an adhesive
or glue (11).
The method comprises the stages of feeding a thermoplastic laminate to a thermoforming
machine; heating the laminate to a predetermined temperature; inserting a preformed
punch (17) into a negative mould (18) of the bottle (1), situated in inverted position,
with the laminate (16) interposed between the punch and the mould; conforming the
body (2) of the bottle by means of pressure or pneumatic vacuum; forming the weakening
(7) and the closing part (6) by means of a punch (19); filling the bottle with the
product (22) to be contained therein, by the upper opening (20) which will later be
the bottom part of the bottle; and thermal weld a laminate (21) of thermoplastic material
to the periphery of the said upper opening, determining the bottom part or base and
the bottle, being therefore, finished and hermetically sealed.
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