Scrapless collapsible bag with circumferentially spaced reinforc

Details Scrapless collapsible bag with circumferentially spaced reinforc Scrapless collapsible bag with circumferentially spaced reinforc

1991-03-15

1992-04-14

Garbe, Stephen P.

Flexible bags

Lifting or suspending element

Including reinforcement or stress distribution means...

383 22, 383 41, 383 67, 383105, 383107, 383117, 383202, B65D 3006, B65D 3020, B65D 3302, B65D 3314

Patent

active

051042363

ABSTRACT:
A reinforced collapsible bag and method of making it from blanks of a flexible woven material which are cut from an elongate web substantially without wasting any material between adjacent blanks with pairs of reinforced strips extending along the side edges and through the central portion of the sides and top and bottom of the bag, thereby reinforcing the bottom, top, sides and corners of the bag. Each blank has a circumferentially continuous central portion and four isosceles triangular portions at each end of the blank. Adjacent sides of adjacent triangular portons are connected together to provide, when the bag is exapnded or filled, generally square ends which are interconnected by generally rectangular side walls. Lifting sstraps can be attached to the reinforced strips along the side edges of the bag. An access opening is provided in an end of the bag by terminating the connections of its triangular portions short of their apexes. Preferably, a spout is received in the access opening and connected to the triangular portions.

REFERENCES:
patent: 1572605 (1976-02-01), Howe
patent: 3105617 (1963-10-01), Felldin
patent: 4597102 (1986-06-01), Nattrass
patent: 4610028 (1986-09-01), Nattrass
patent: 4658432 (1987-04-01), Lehmann et al.
patent: 4703517 (1987-10-01), Marino
patent: 4781472 (1988-11-01), LaFleur et al.
patent: 4790029 (1988-12-01), LaFleur et al.

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