Dispensing – Collapsible wall-type container – Nonmetallic
Patent
1983-10-26
1985-10-22
Rolla, Joseph J.
Dispensing
Collapsible wall-type container
Nonmetallic
222 92, 220450, 220465, B65D 3510
Patent
active
045483388
ABSTRACT:
There is provided a packing tube having a gas tight head region. The tube consists of a tube body formed of a multilayered connecting foil having a metallic barrier layer. A prefabricated conical headpiece is provided consisting of synthetic material having a discharge opening and a connecting element disposed thereon. The connecting element consists of a connecting foil including a metallic layer and at least one layer of synthetic material. The peripheral rim of the tubular body overlaps the outer rim of the connecting element either thereabove or therebelow, and wherein the superimposed layers of synthetic material are softened by inductive generation of heat in the metal layers, and welded to one another under pressure. The headpiece consists of two overlapping portions, the lower portion completely covering the underside of the upper portion, the lower portion consisting of a non-permeable material. The outer diameter of the headpiece is smaller than the inner diameter of the tubular body. The outer rim edge formed by the superimposed upper and lower portions of the headpiece is undercut, and forms a portion of the surface of a cone, whose apex lies on the central axis of the tube, and directed oppositely to the discharge opening of the headpiece. For locking the headpiece portions, synthetic material of the connecting foil is overlappingly formed on the undercut outer rim edge of the headpiece overlapping at least the connecting line of the upper and lower parts.
REFERENCES:
patent: 3565293 (1971-02-01), Schultz
patent: 4011968 (1977-03-01), McGhie et al.
patent: 4132331 (1979-01-01), Magerle
Automation Industrielle, S.A.
Pedersen Nils E.
Rolla Joseph J.
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