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US 6,648,636 B2Granted
Heating device for heat-sealing containers
AssigneeShikoku Kakoki Co., Ltd.
InventorsToshio Kanematsu, Takahiro Miyawaki, Yoshihiro Saijo, Michio Ueda
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AssigneeShikoku Kakoki Co., Ltd.
InventorsToshio Kanematsu, Takahiro Miyawaki, Yoshihiro Saijo, Michio Ueda
Estimating the term…
A heating device for heat-sealing containers by heating an end forming portion 13 of a tubular container having a rectangular to square cross section, the end forming portion 13 having four generally quadrilateral first to fourth panels 21 to 24 continuous with one another and each having a heating region 31, 32, 33 or 34 to be heated on an inner surface thereof. The heating device has a hot air nozzle 71 in the form of a bottomed tube and fittable into the container end forming portion 13 for heating an inner surface of the container. The nozzle 71 has four side walls 81 to 84 continuous with one another and corresponding to the first to fourth panels 21 to 24 respectively, at least one of the side walls 81 to 84 being provided with a hot air discharge portion 121, 122, 123 or 124 having orifices 111 and to be opposed to the heating region of the corresponding panel 21, 22, 23 or 24 and with a hot air nondischarge portion 125, 126, 127 or 128 other than the discharge portion, the hot air nondischarge portion being at least partly provided with a hot air escape portion 95, 96, 97 or 98.
A heating device for heat-sealing containers by heating an end forming portion of a tubular container having a rectangular to square cross section, the end forming portion having four generally quadrilateral first to fourth panels continuous with one another and each having a heating region to be heated on an inner surface thereof,
A heating device for heat-sealing containers by heating an end forming portion of a tubular container having a rectangular to square cross section, the end forming portion having four generally quadrilateral first to fourth panels continuous with one another and each having a heating region to be heated on an outer surface thereof,
A heating device for heat-sealing containers by heating a top forming portion of a tubular container having a rectangular to square cross section, the top forming portion having four generally quadrilateral first to fourth top panels continuous with one another and divided by first to fourth scores into first to fourth roof panels and first to fourth seal panels respectively, each of the first and fourth seal panels having a heating region to be heated on an outer surface thereof, the heating device having a hot air nozzle in the form of a bottomed tube and fittable into the container top forming portion for heating an inner surface of the container, the nozzle having four side walls continuous with one another and corresponding to the first to fourth seal panels respectively, at least one of the side walls being provided with a hot air discharge portion having orifices and to be opposed to the heating region of the corresponding seal panel and with a hot air nondischarge portion other than the discharge portion, the hot air nondischarge portion being at least partly provided with a hot air escape portion.
Dependencies are inferred from the claim text.