| 摘要 |
Process for heat-sealing a thermoplastics cover (16) to a thermoplastics container (2) in which the cover (16) has a channel (18') formed thereon for receiving a sealing lip (14) on the container walls (6,8). The lip (14) and a floor (26') of the channel (18') are melted and then cooled to form beads (46,48) having a solidified skin (50,52) of thermoplastics material over a molten core (54,56). The lip (14) is mated with the channel (18') and the melted portions thereof coalesced with the melt from the floor (26'). Some of the coalesced melt (60) exudes between the lip (14) and the sides of the channel (18') and solidifies to provide additional bonding. The product produced by the process is also claimed. <IMAGE> |
