Seal heating method for a paper container and apparatus of...

Details Seal heating method for a paper container and apparatus of... Seal heating method for a paper container and apparatus of...

B - Operations, Transporting

65

B

B65B 51/20 (2006.01) B29C 65/10 (2006.01) B31B 3/64 (2006.01) B65B 7/18 (2006.01) B29C 35/04 (2006.01)

Patent

CA 2144427

An inner seal portion (30a) of an open edge portion (1a, 1b) of a paper container (1) is faced to an inner peripheral heating portion of a seal-heating apparatus. An outer seal portion (30b) of the open edge portion is faced to an outer peripheral heating portion (4, 5, 6, 7, 13, 14, 15, 16) of the seal-heating apparatus. At least the inner peripheral heating portion (8, 17) is oscillated about an axial line thereof so as to vary the hitting position of the inner seal portion against which hot air blown from the hot air blowing holes (8a) of the inner peripheral heating portion (8) hits. Thus, the seal portion (30) of the paper container (1) can be equally and properly heated.

Une partie de scellement intérieure (30a) d'une partie de bordure ouverte (1a, 1b) d'un contenant en papier (1) est placée face à une partie chauffante périphérique intérieure d'un appareil autochauffant. Une partie de scellement extérieure (30b) de la partie de bordure ouverte est placée face à une partie chauffante périphérique extérieure (4, 5, 6, 7, 13, 14, 15, 16) de l'appareil autochauffant. Au moins la partie chauffante périphérique intérieure (8, 17) est mise en oscillation de part et d'autre de la ligne axiale de manière à faire varier la position de la partie de scellement intérieure contre laquelle frappe l'air chaud soufflé par les trous de soufflage d'air chaud (8a) de la partie chauffante périphérique intérieure (8). Ainsi, la partie de scellement (30) du contenant en papier (1) peut être également et adéquatement chauffée.

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