When all components are fused to be combined with one another, the fusing guides 60 are melted on {HEAD ~ the corresponding surface} of {TAIL ~ the outer cover} 70, thus sealing up connections between the inner cover 40 and the outer cover 70 
When all components are fused to be combined with one another , the fusing guides 60 are melted on { HEAD ~ the corresponding surface } of { TAIL ~ the outer cover } 70 , thus sealing up connections between the inner cover 40 and the outer cover 70
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH