Aep Industries Inc.

Sergey Miro

William L Harkey

A multilayer industrial stretch film is provided with at least one cling layer and is formed by coextruding a film-formable polymer with a tackifier. The invention provides a multilayer film having at least two skin layers and at least one core layer in which at least one of the skin layers is derived from a mixture of the tackifier and the film-formable polymer. At least one of the core layers can include a vapor corrosion inhibitor (VCI). Beneficial results are obtained by also including a lubricating composition in at least one, if not both, skin layers when at least one of the core layers contains a VCI. The lubricant in the skin layer effectively reduces the extrusion temperature (for blown and cast films), and tends to avoid degrading or igniting the VCI.

Tacky stretch film and method of making and using the same

The invention provides a stretch wrapping film (i.e., non-heat shrinkable) having (i) skin layers and (ii) at least one core layer which includes at least 25% by weight, more preferably from about 60% to about 90% by weight (of the layer composition) of a propylene polymer, preferably a propylene homopolymer; for the film as a whole, the propylene content ranges from about 10% to about 65% by weight (of the film). In more preferred embodiments, the films include skin layers, intermediate layers, and a core layer. At least one of the intermediate and core layers contains the propylene polymer, which is preferably a homopolymer or a blend of homopolymer with linear low density polyethylene (LLDPE); the skin layers comprise an ethylene polymer, preferably a tacky LLDPE composition. These films have improved strength and tear and puncture resistance, and are especially suited for industrial wrapping of loaded pallets and other large objects such as furniture. These films are especially advantageous in providing a high holding force.

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Fair Lawn, NJ, United States of America

Sergey Miro