发明名称 Fitment having removable membrane
摘要 A fitment for use as a pour spout for a paper carton or flexible bag for liquids and powders has a flange which may be welded around a hole in the carton. A spout projecting outward from the flange is provided with a removable membrane integral with an inward projection positioned on the interior of the spout approximately midway of its height. Preferably the membrane is concave. A horizontally disposed pull ring is attached to the membrane by a connector so that pulling the ring removes the membrane by fracturing the tear line at the juncture of the outer edge of the membrane and the projection. A cap snaps over the spout and may be removed by unscrewing the complementary threads on cap and spout. A tamper-evidencing band frangibly connected to the lower edge of the cap skirt engages the exterior of the spout so that the cap cannot be removed without breaking the fragible connection.
申请公布号 US5810184(A) 申请公布日期 1998.09.22
申请号 US19970808682 申请日期 1997.02.28
申请人 PORTOLA PACKAGING, INC. 发明人 ADAMS, BRIAN M.;CHENAULT, RAWSON L.;SANDOR, LASZLO G.;LUCH, DANIEL
分类号 B31B1/84;B65D5/74;B65D17/34;B65D17/347;B65D17/353;B65D47/10;B65D47/36;B65D53/00;(IPC1-7):B65D25/42 主分类号 B31B1/84
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