| 摘要 |
PCT No. PCT/JP94/01144 Sec. 371 Date May 1, 1995 Sec. 102(e) Date May 1, 1995 PCT Filed Jul. 13, 1994 PCT Pub. No. WO95/02540 PCT Pub. Date Jan. 26, 1995An inner seal portion (30a) of an open edge portion (1a, 1b) of a paper container (1) is aligned face-to-face with an inner peripheral heating portion of a seal-heating apparatus. An outer seal portion (30b) of the open edge portion is aligned face-to-face with 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.
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