发明名称 |
Method of manufacturing packs of cigarettes with a hermetically sealed wrapper |
摘要 |
Groups of cigarettes are inserted in succession into the peripheral pockets of an indexed wrapping wheel, each together with a relative sheet of heat-sealable wrapping material that incorporates a tear-open strip to facilitate the operation of breaking open the pack; the sheet is folded initially to create a sheath, enveloping the group of cigarettes lengthwise, the overlapping flaps of which are fused together by heat-seal elements that operate each time the wheel pauses; the projecting ends of the sheet are then folded down over the top and bottom of the pack by an assembly of mechanisms, and fused together by further heat-seal elements. |
申请公布号 |
US4887408(A) |
申请公布日期 |
1989.12.19 |
申请号 |
US19880209320 |
申请日期 |
1988.06.21 |
申请人 |
G.D. SOCIETA PER AZIONI |
发明人 |
MATTEI, RICCARDO;DALL'OSSO, GASTONE |
分类号 |
B65B11/32;B65B19/22;B65B51/14 |
主分类号 |
B65B11/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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