(57) A sealed beverage container comprises a rectangular parallelepipedal main body (11)
of paper-base laminate having a top wall (14), a bottom wall (16) and a trunk wall
(15), and upper and lower caplike reinforcing covers (12,13) made of thermoplastic
synthetic resin and fitted over the upper and lower ends of the main body (11) respectively.
Each of the covers (12,13) has a top wall (42) and a peripheral wall (41) which is
bonded by fusion to the trunk wall (15) of the main body (11). The container is produced
by an apparatus which comprises a conveyor (52) having holders (72) each adapted to
hold the container main body (11) as laid down thereon with its opposite ends projecting
therefrom sidewise, a heater (60) disposed above the path of travel of the holder
for heating the opposite ends of the main body, a fitting unit (61) disposed above
the path downward from the heater for fitting the respective covers (12,13) over the
opposite ends of the container main body (11), and a pressure bonding unit (62) disposed
above the path downstream from the fitting unit (61) for pressing the peripheral wall
of each cover (12,13) against the trunk wall (15) for bonding.
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