Flexible bags – Wall details – Specified seam structure
Patent
1996-03-18
1997-09-16
Ball, Michael W.
Flexible bags
Wall details
Specified seam structure
1562753, 1562748, 1562757, 1563317, 428 364, B65H 6908
Patent
active
056673078
ABSTRACT:
A method for making an article holding bag of a non-woven fabric material involves impregnating the non-woven fabric material in an aqueous solution containing 25-80% by weight of water and 75-20% by weight of a resin mixture composed of polyacrylic acid and polyurethane in a weight ratio ranging between 2:1 and 1:4. Thereafter, the impregnated non-woven fabric is removed and dried by baking. The dried non-woven fabric is laminated and is then subject to a high frequency plastic welding to make the article holding bag.
REFERENCES:
patent: 4053546 (1977-10-01), Yomasaki et al.
patent: 4410575 (1983-10-01), Obayashi et al.
patent: 4609690 (1986-09-01), Gruber et al.
patent: 4728566 (1988-03-01), Lancaster et al.
Ball Michael W.
Tolin Michael A.
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