作者: John J. Goodrich
DOI:
关键词: Normalization property 、 Materials science 、 Structural engineering 、 Composite material
摘要: A bag of tubular form open at one end and closed the other end, comprising a plurality contiguous plies paper bonded together adjacent each said ends, an innermost ply heat sealable plastic material lightly ends to for manual detachment therefrom, being longitudinally reversely creased along diametrically opposed portions provide pair oppositely disposed gussets interposed between front rear wall portions, least some inner stepped progressively upward with respect outer in portion outermost upwardly exposed overlap portion, terminating within thereof, gusset coated adhesive construction reverse that sealed closure otherwise completed by coating overlapping folding over against opposite bonding thereby imparting combined strength all such plies, adapted sealing similarly when so both sift leak proof resistant insect penetration, opening removal intact.