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| Thermal windows |
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| Method for installing or replacing tendons in prestressed concrete slabs |
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| Roofing slab |
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Backing board insert for food packages
| Details |
Inventors: Winchell, Jack W.;
Assignee: Huggitt Packaging Company (Cincinnati, OH)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:
An improved L-type backing board insert for supporting food, such as shingled bacon slices, in a film wrapped package is disclosed comprised of a two-ply laminate. An opaque flexible base ply of pigmented plastic material, such as high density polyethylene, is printed on one side and is provided with a mat finish on the other side. A window aperture is formed in the opaque base ply for viewing both sides of a portion of the packaged bacon. A ply of transparent polyolefinic film, such as polypropylene film, is adhered to the base ply, substantially covering the entire printed face and forming a window over the window aperture formed in the base ply. Use of the polypropylene film provides the backing board with a high gloss finish. The improved two-ply backing board reduces the amount of ink necessary for printing on the backing board, captures the printing between the two layers of the laminate, and yields an inexpensive, flexible and high quality backing board. |
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DETAILED DESCRIPTION What is claimed is: 1.
An insert for packaging of a moisture laden food product within a vacuum sealed film wrapper comprising: a substantially planar base ply of high density polyethylene which is pigmented to render it substantially opaque, the base ply bearing printed matter on a face thereof, a window aperture formed in the base ply, and a ply of transparent polypropylene film adhered to the base ply and substantially covering the printed face of the base ply, the polypropylene ply forming a gas barrier window over said window aperture of the base ply.
2.
The packaging insert of claim 1 wherein the insert is an L-type insert, the base ply having a major portion which is substantially rectangular in shape, and a flap portion, the flap portion being foldable along a score line extending along an edge of the major portion, the polypropylene ply covering the score line along one side thereof.
3.
The packaging insert of claim 2 wherein the high density polyethylene is about 8 mils in thickness, and the polypropylene ply is about 0.
75 mils in thickness.
4.
An improved L-type backing board for packaging of bacon within a vacuum sealed film wrapper, comprising: a flexible and resilient base ply which is pigmented to render it substantially opaque, the base ply being substantially planar and having a main portion and a flap portion, the flap portion being connected to the main portion along a perforated hinge line, the base ply being substantially made of high density polyethylene, printed matter on only one face of the base ply and a mat finish on the other face, a window aperture formed in the main portion of the base ply, and a ply of flexible and resilient transparent polypropylene film adhered to the base ply and covering substantially all the printed face of the base ply, the polypropylene ply further forming a window over said window aperture of the base ply.
5.
A backing board of claim 4 wherein the polypropylene ply is continuous over the base ply face and covers the perforations of the hinge line on said face such that a smooth burr-free edge is presented when the flap is folded for use of the backing board
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