Patent ID: 8225584

Claim:
A method for packaging an article with a stretch hood film comprising: a. providing a tubular film sealed on one end, wherein the film is a multi-layer film comprising a core layer and skin layers, wherein the skin layers are arranged on each side of the core layer, wherein the core layer comprises: i. 20 to 90 wt % of a first polymer component (FPC), wherein the FPC has a melt flow rate in the range of 0.5 to 50 dg/min, a heat of fusion of less than 75 J/g and comprises: 1. 65 to 95 wt % of propylene-derived units based upon total weight of the FPC; and 2. 3 to 35 wt % of at least one of ethylene-derived units and C 4 to C 20 alpha-olefins or mixtures thereof, based upon total weight of the FPC; and ii. 80 to 10 wt % of a second polymer component (SPC), wherein the SPC comprises ethylene-derived units and 1 to 30 wt % of units derived from a co-polymerizable ethylenically unsaturated ester, based on the total weight of the SPC, the SPC having: 1. a melt index in the range of from 0.05 to 20 g/10 min; 2. a density in the range of 0.90 to 0.94 g/cm 3 ; and 3. at least 10 per 1000 C-atoms of C 1 to C 5 short chain branches; wherein the wt % of the FPC and the wt % of the SPC are based upon the combined total weight of the FPC and SPC, and at least one skin layer comprises at least 60 wt % of a linear low density polyethylene having a density in the range of 0.92 to 0.951 g/cm 3 ; and wherein the film has an elastic recovery after a 100% stretch of at least 40% and provides a normalized holding force per 100 μm thickness pre-stretch at 85% stretch of at least 17 N/50 mm, after an initial stretch of 100%; b. stretching the film with a stretcher in the transverse direction beyond the external dimensions of the article; c. stretching the film with the stretcher in the machine direction; d. pulling the film downwards over the article; and e. releasing the film from the stretcher, wherein the film's elastic recovery acts to form a stretch hood around the article.