Method of making a container bag

Details Method of making a container bag Method of making a container bag

1991-02-05

1991-12-24

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493384, B31B 186

Patent

active

050748335

ABSTRACT:
A method of making an intermediate bulk container having zones (12) for the attachment of lifting loops (20) from a fabric (10) having eight such zones with lifting loops attached to the zones comprises attaching the opposite selvedges (14, 16) of the fabric together and then attaching the base (26) to complete the bag. The zones (12) are arranged in four pairs with a zone (12a) of one of the pairs being adjacent to one of the fabric selvedges (14). The side seam (24) of the bag so made is thus spaced from its adjacent corner. This means that all four lifting loops can be attached to the fabric while it is still in the flat state since no lifting loop has to cross the seam in the finished IBC>. This form of construction lends itself to automatic stitching processes and radically increases speed of production.

REFERENCES:
patent: 4010784 (1977-03-01), Nattrass et al.
patent: 4207937 (1980-06-01), Sandeman
patent: 4300608 (1981-11-01), Cuthbertson
patent: 4493109 (1985-01-01), Nattrass

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