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Packaging material for food items containing permeating oils

a technology of permeating oil and packaging material, which is applied in the direction of packaging foodstuffs, packaged goods, liquid handling, etc., can solve the problems of affecting the appearance of packaging

Inactive Publication Date: 2007-01-04
GRAPHIC PACKAGING INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such staining detracts from the appearance of the packaging, which may be viewed as damaged or contaminated.
However, unlike other oils, which freeze at typical freezer temperatures, the no or low trans oils remain fluid, thereby causing greater staining to the package.

Method used

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  • Packaging material for food items containing permeating oils
  • Packaging material for food items containing permeating oils

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0057] Use of an oil resistant layer in the packaging material was evaluated. A an about 2 lb / ream layer of low density polyethylene obtained from West Lake under the trade name EC 482 was applied to natural Kraft paper having a basis weight of about 38 lbs / ream. An about 4 lb / ream layer of polypropylene obtained from Phillips Sumika under the trade name Marlex then was extruded onto the rough, uncoated side of the Kraft paper. The layers successfully adhered to one another. An about 4 lb / ream layer of EC 482 LDPE including heat seal additives then was extruded on top of the polypropylene as the heat seal layer. Using the Oil Resistance Test, the oil resistant material effectively resisted penetration of Wesson canola oil, a non-trans fatty acid oil.

example 2

[0058] Use of an oil resistant layer in the packaging material was evaluated. A blend of 68 wt % polypropylene obtained from Phillips Sumika under the trade name MARLEX, 20 wt % low density polyethylene obtained from West Lake under the trade name EC 482, and 12 wt % calcium carbonate obtained from Bayshore under the trade name BL-910 was prepared. The calcium carbonate was added to improve adhesion to the substrate. About 4 lb / ream of the composition was extrusion coated onto natural Kraft paper having a basis weight of about 38 lb / ream. An about 4 lb / ream layer of EC 482 LDPE including heat seal additives then was extruded on top of the polypropylene as the heat seal layer. This composition effectively adhered to the paper substrate and provided good resistance to non-trans fatty oil as measured by the Oil Resistance Test.

example 3

[0059] The effectiveness of a masking colorant composition including a metallic pigment was compared with composition without a metallic pigment. The compositions evaluated are presented below.

[0060] Ink Formulation I (Black): [0061] about 20 wt % carbon black pigment [0062] about 23 wt % other components (e.g., binder, resin, surfactant, wax) remainder water

[0063] Ink Formulation II “Pewter” (Slight Metallic Cast): [0064] about 14 wt % carbon black pigment [0065] about 4.7 wt % aluminum flake [0066] about 21 wt % other components (e.g., binder, resin, surfactant, wax) remainder water

[0067] Ink Formulation III (Metallic Silver-Black): [0068] about 6.7 wt % black pigment [0069] about 9.8 wt % aluminum flake [0070] about 20 wt % other components (e.g., binder, resin, surfactant, wax) remainder water

[0071] The ink compositions were coated onto the smooth side of the paper in amount about 1 lb dry / ream. Then, about 6 lb / ream of low density polyethylene was extrusion coated onto the ...

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Abstract

A packaging material for oily or greasy food items includes one or more features for resisting penetration, masking penetration, or for a combination of resisting and masking penetration by the oily or greasy substance.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of U.S. Provisional Application No. 60 / 695,145, filed Jun. 29, 2005, the disclosure of which is incorporated by reference herein in its entirety.BACKGROUND [0002] Paper-based bags and cartons frequently are used to package frozen food items, such as French fries, hash browns, and breaded chicken. However, such products often are coated with oils that are capable of permeating the paper or paperboard. When oils penetrate the packaging, a darkened area or stain appears on the outside of the carton. Such staining detracts from the appearance of the packaging, which may be viewed as damaged or contaminated. [0003] Recently, interest in low or no-trans fatty oils has increased because these oils are viewed as healthier than other oils. However, unlike other oils, which freeze at typical freezer temperatures, the no or low trans oils remain fluid, thereby causing greater staining to the package. SUMMARY [000...

Claims

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Application Information

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IPC IPC(8): B65B1/04
CPCB32B27/10B32B27/20B32B27/32D21H27/10D21H19/56D21H19/82D21H19/84D21H19/22B32B2307/31B32B2307/408B32B2317/12B32B2323/046B32B2323/10B32B2439/70
Inventor BOHME, REINHARD D.FILES, JOHN CAMERON
Owner GRAPHIC PACKAGING INT