Method of packaging food products
AssigneeThe Dow Chemical Company
InventorsPak-Wing Steve Chum, Nicole F. Whiteman
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Abstract
Food products, especially fresh food products such as retail-cut red meat, vegetables and fruits, are packaged with a film having at least one film layer comprising a substantially linear ethylene polymer, preferably a polymer comprising ethylene and at least one .alpha.-olefin comonomer, e.g. 1-octene. The ethylene polymers used in the construction of the film structures used in this invention are prepared by constrained geometry catalyst technology. The film structures can be either mono- or multilayered, oriented or nonoriented, oxygen permeable or impermeable, and prepared by any conventional technique. The food products can be packaged by any conventional method, e.g. stretch overwrap, shrink, vacuum skin, on vacuum forming.
Claims10
A method for packaging food, the method comprising wrapping the food in a film structure having at least one film layer comprising a blend of (A) a substantially linear ethylene polymer characterized as having:
- (i) a melt flow ratio, I.sub.10 /I.sub.2,.gtoreq.5.63;
- and
- (ii) a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation:
- M.sub.w /M.sub.n .ltoreq.(I.sub.10 /I.sub.2)-4.63;
- and
- (iii) a density greater than 0.85 g/cm.sup.3 ;
- and (B) at least one other polymer.
Dependencies are inferred from the claim text.