초록 ▼

Blown films of LLDPE having reduced block and increased slip are provided by incorporating into the polymer, before blowing into films, effective amounts of certain fatty acid amides and inorganic materials which provide fast bloom, thereby obtaining an expedient effect of the additives on the surfa

Blown films of LLDPE having reduced block and increased slip are provided by incorporating into the polymer, before blowing into films, effective amounts of certain fatty acid amides and inorganic materials which provide fast bloom, thereby obtaining an expedient effect of the additives on the surface properties of the blown film.

대표청구항 ▼

An extrusion-blown film consisting essentially of a blend of polymer, secondary fatty acid amide, and finely-divided inorganic material, said polymer being characterized as one comprising ethylene copolymerized with a minor amount of at least one alpha, beta-ethylenically-unsaturated alkene having f

An extrusion-blown film consisting essentially of a blend of polymer, secondary fatty acid amide, and finely-divided inorganic material, said polymer being characterized as one comprising ethylene copolymerized with a minor amount of at least one alpha, beta-ethylenically-unsaturated alkene having from 3 to 12 carbon atoms by the action of a coordination catalyst to produce a linear, low density copolymer, LLDPE, having a density in the range of about 0.90 to about 0.94 gms./cc and a melt flow value in the range of about 0.1 to about 30 gm./10 min. as measured by ASTM-D-1238(E) and said amide being characterized as having 2 alkyl moieties, one of which is saturated and the other of which is unsaturated, said inorganic material being at least one selected from the group comprising talc, limestone, silica, aluminium silicate, diatomaceous earth, magnesium silicate, clay, magnesium sulfate, alumina trihydrate, magnesium oxide, and zinc oxide, wherein the said polymer comprises about 96.5% to about 99.94% by weight of the total blend, the remaining portions of the blend comprising about 0.05% to about 1.5% by weight of the said amide, and about 0.01% to about 2.0% by weight of the said inorganic material said extrusion-blown film having an average film wall thickness in the range of about 0.3 to about 8 mils, said film being further characterized as a fast-bloom film.