Stretch packaging method employing multi-layer film

Details Stretch packaging method employing multi-layer film Stretch packaging method employing multi-layer film

1993-07-28

1994-03-22

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

428339, 428516, 5263481, 5263485, 5263483, 5263486, 524474, 524483, 53441, B65B 1108, C08F21014

Patent

active

052965805

ABSTRACT:
A film for stretch packaging comprising as a substrate a film of a linear low density polyethylene having a melt flow rate (190.degree. C.), as measured by an ASTM-D-1238E method, of 0.3 to 8 g/10 min., a density, as measured by an ASTM-D-1505 method, of 0.900 to 0.918 g/cm.sup.3, a molecular weight distribution (Mw/Mn) of 2 to 6, two or more melting points existing as measured by a differential scanning calorimeter, a maximum melting point Tm.sub.1 of 118.degree. to 125.degree. C. and a ratio of the height Tm.sub.1 H of the peak of the highest melting point Tm.sub.1 to the height Tm.sub.1 H of the melting point Tm.sub.2 adjacent thereto (i.e., Tm.sub.1 H/Tm.sub.2 H), of 1.3 or less.

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Schwartz, Plastics Materials and Processing, Van Nostrand Reinhold Co., Inc., N.Y., 18, 1982.

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