Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1979-11-30
1981-04-28
Cannon, James C.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
139389, 156 78, 15624425, 2065242, 229 53, 428138, 428141, 428196, 428226, 428252, 428265, 428315, 428516, 264DIG8, B32B 518, B32B 520, B32B 524, B65D 7902
Patent
active
042646596
ABSTRACT:
A stiff, tear resistant woven polyethylene fabric is disclosed, which comprises a woven structure of monoaxially oriented polyethylene tapes laminated to an oriented polyethylene film with an adhesive synthetic thermoplastic polymer therebetween. The adhesive has a lace structure with a sufficient number of holes and of an average size to provide the fabric having a tear strength in at least one of the transverse and machine directions substantially greater than the tear strength of a similar fabric produced with a continuous homogeneous film of adhesive of the same synthetic thermoplastic polymer and of the same thickness as the adhesive portions of the lace adhesive. The ratio of the area of the holes in the lace structure to the total area of the lace structure is between about 0.4 and 0.85. The fabric is useful for sacks which are filled in automatic packaging operations.
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Cannon James C.
E. I. Du Pont de Nemours and Company
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