Dow Global Technolgoies LLC

Pbbpolisur S.r.l.

João Gargalaka, Jr

Nicolas Cardoso Mazzola

Jorge Caminero Gomes

Marcelo Delmar Cantu

Mehmet Demirors

Teresa Plumley Karjala

Mustafa Bilgen

Carmelo Declet Perez

Felipe Martinez Barreneche

Gianna Buaszczyk

Sydney E Hansen

Bruno Cesar De Moraes Barbosa

Maria Laura Perez Muñoz

Rafaela De Foggi Carioli

The present invention provides coated films and packages formed from such films. In one aspect, a partially coated film comprises (a) a film having two outer surfaces, wherein a first outer surface is provided by a film layer that comprises from 70 to 100 percent by weight of a polyolefin having a density of 0.860 to 0.965 g/cm; and (b) a coating on the first outer surface of the film comprising polyurethane, wherein the coating covers less than 25% of the surface area of the first outer surface of the film and wherein the coated portion of the film exhibits an Elmendorf tear in at least one of the machine direction or cross direction that is at least 20% less than the Elmendorf tear of the uncoated portion in the same direction, with the Elmendorf tear being measured in accordance with ASTM D1922.

Partially coated films and packages formed from same

Embodiments of thermoformed monolayer or multilayer films are provided, wherein the thermoformed monolayer multilayer films comprise a first composition comprising at least one ethylene-based polymer, wherein the first composition comprises a Molecular Weighted Comonomer Distribution Index (MWCDI) value greater than 0.9, and a melt index ratio (I/I) that meets the following equation: I/I&#x2265;7.0&#x2212;1.2&#xd7;log (I).

Thermoformed film compositions with enhanced toughness after thermoforming processes

Disclosed herein is a film comprising a layer that comprises a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I, measured according to ASTM D1238 (2.16 kg, 190 C), of from 0.5 to 10 g/10 min; a density (measured according to ASTM D792) of less than 0.935 g/cm; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190 C) of from 6.0 to 7.5; a molecular weight distribution (Mw/Mn) of from 2.8 to 3.9; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms, and a low density polyethylene.

Films having desirable mechanical properties and articles made therefrom

The present invention relates to a film structure comprising an outer layer, a core and an inner layer (or sealant layer). The outer layer comprises a polyolefinic material having a Vicat softening temperature of 85&#xb0; C. or greater, and a total crystallinity in the range of 25 to 45%. The core comprises a linear low density polyethylene having a density of 0.925 g/cmor less, and a melt index of 4.0 g/10 min or less. The inner layer comprises linear low density polyethylene having a density of from 0.865 to 0.926 g/cmand a melt index of less than 4.0 g/10 minutes. The films of the present invention have less than 25% of polyethylenes having a density of 0.930 g/cmor greater. Further, the films of the present invention can be characterized by the substantial absence of polyamide, polyester, ethylene vinyl acetate, ionomers, polyvinyl chloride, and/or cyclic olefin polymers.

Polyolefin based films suitable for thermoforming

Embodiments relate to multilayer structures, multilayer films, and packages formed therefrom. As an example, a multilayer structure can include a multilayer structure comprising a polyolefin sealant layer, a coupling layer on the polyolefin sealant layer, where the coupling layer includes a polyolefin and a maleic anhydride grafted (MAH) polymer, where the total amount of MAH polymer is from 15 weight percent to 50 weight percent of a total weight percent of the coupling layer, where the polyolefin is selected from the group consisting of a high pressure low density polyethylene, a high density polyethylene, an ethylene acrylic acid copolymer, an ethylene(meth)acrylic acid copolymer, propylene based plastomers, ionomers or a combination thereof, and a barrier layer directly on the coupling layer.

Multilayer structures, multilayer films, and packages formed therefrom

Growing community of inventors

São Paulo, Brazil

João Gargalaka, Jr