| 摘要 |
FIELD: packing. SUBSTANCE: invention relates to opening device with hole made in packing material and closed by external plate. Plate has free portion bent above sealing portion of plate. When pack is filled and formed, it is furnished with thermoplastic member enclosing the plate. Thermoplastic member consists of pour neck and cover. Cover is tilted over pour neck and is butt-joined with neck. Projection on cover is arranged at one level with lower edge of pour neck. Lower surface of pour neck is coated with sealing substance and thermoplastic member is secured on pack. Surface of projection is made fast on free portion of plate. EFFECT: improved quality of packing. |
