Edge-bonding of sheet material

Details Edge-bonding of sheet material Edge-bonding of sheet material

1983-09-27

1985-10-01

Moy, Joseph Man-Fu

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

229 48SA, 229 48SB, 229 48T, 220359, B65D 564, B65D 4300

Patent

active

045440930

ABSTRACT:
When a packaging container is formed by sealing an area of sheet material to the edge of another area of sheet material, the L-joint or T-joint so formed is sometimes liable to rupture when subjected to blows or strain. According to this invention that danger is reduced or eliminated by moulding a zone (4) of an end closure panel (3) abutting on the container wall edge to which it is jointed so that it forms a flange resting against and bonded to the face of said wall (1). The flange may be provided with a lip (6) projecting from a short length of the edge of said closure panel.

REFERENCES:
patent: 4167234 (1979-09-01), Gordon et al.
patent: 4207989 (1980-06-01), Ingemann
patent: 4209126 (1980-06-01), Elias
patent: 4234121 (1980-11-01), Sasaki
patent: 4280653 (1981-07-01), Elias
patent: 4328905 (1982-05-01), Hardt
patent: 4346833 (1982-08-01), Bernhardt
patent: 4448345 (1984-05-01), Helms

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