Method of and apparatus for draping webs around block-shaped obj

Details Method of and apparatus for draping webs around block-shaped obj Method of and apparatus for draping webs around block-shaped obj

1987-08-24

1988-10-25

Culver, Horace M.

Package making

Methods

Enclosing contents within progressively formed web means

53553, B65B 902, B65B 1110

Patent

active

047793996

ABSTRACT:
Successive block-shaped objects of a continuously moving row of objects are draped into two continuously moving webs by causing one of the webs to advance in a horizontal plane below the moving row of objects so that the marginal portions of the one web extend laterally beyond the objects. The other web is converted into an inverted U-shaped body which overlies three sides of each object and has two laterally outwardly extending marginal portions which overlie and are thereupon welded to the respective marginal portions of the one web. Conversion of the other web into the inverted U-shaped body can take place in several successive stages.

REFERENCES:
patent: 3090174 (1963-05-01), Kraft
patent: 3490194 (1970-01-01), Monaghan
patent: 4169344 (1979-10-01), Ganz et al.
patent: 4396447 (1983-08-01), Firth

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