Bag for packaging heavy materials

Details Bag for packaging heavy materials Bag for packaging heavy materials

1995-04-07

1997-03-11

Robinson, Ellis

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428143, 428516, 428212, 428 357, 428331, 428213, 428330, 428216, 383 32, 383 35, 206554, B65D 3302

Patent

active

056099304

ABSTRACT:
A bag for packaging heavy materials, exhibiting excellent strength, content packaging performance, stacking performance on the pallets, and anti-collapsing performance. The bag is made of a multi-layer laminated film which comprises an outermost layer of a polyethylene film containing an inorganic filler in an amount of from 20 to 80% by weight and an innermost layer of a polyethylene film containing an inorganic filler in an amount of from 10 to 40% by weight, the outermost layer having on the surface thereof a coefficient of static friction of not smaller than 0.5 (ASTM D 1894), a coefficient of dynamic friction of not larger than 0.5 (ASTM D 1894) and a gloss of not larger than 50% (JIS Z 8741, at a measuring angle of 60.degree.), and the content of the inorganic filler in the innermost layer being from 1/2 to 1/6 of the content of the inorganic filler in the outermost layer.

REFERENCES:
patent: 3246831 (1966-04-01), Teicher
patent: 4085851 (1978-04-01), Young
patent: 4318950 (1982-03-01), Takashi et al.
patent: 5013290 (1991-05-01), DeMatteis
patent: 5129735 (1992-07-01), Neal et al.
patent: 5248040 (1993-09-01), DeMatteis et al.
patent: 5250612 (1993-10-01), Hazlitt et al.
patent: 5497884 (1996-03-01), DeMatteis et al.

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