Abstract:
A disposable lunch container liner to protect the interior of a lunch container from food particles. The lunch container liner has adhesive pieces on its under side for removable attachment to the interior of a lunch container.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a disposable lunch container liner, which keeps the interior of a lunch container clean and free of food particles. The invention is a liner that may be easily inserted to protect the interior of a lunch container. Similarly, the liner also may be easily removed from the lunch container for disposal. 
     BACKGROUND OF THE INVENTION 
     Many children bring their lunch to school in a container such as a lunch box. Often, the lunch box that they bring home is soiled with food crumbs or spills because there is no protection between the lunch contents in the container and the interior of the container. Many parents find it difficult and time consuming to clean the interior of a dirty lunch box. 
     The present invention discloses a non-porous disposable lunch container liner that protects the interior of a lunch container from being soiled by food spills and crumbs. 
     SUMMARY OF THE INVENTION 
     The present invention is a lunch container liner that separates the interior of a lunch container from the food contents in the container. The liner is made of a non-porous material to protect the interior of the lunch container from being soiled by the food in the container. The liner is designed to conform to a food container of any shape and to cover all interior surfaces of the container, except the interior surface of the cover of the container. The liner is equipped with adhesive strips to hold the liner in place once it is inserted into the lunch container. 
     The adhesive strips permit easy insertion into and removal from a lunch container. After the liner is used in a lunch container, it may be removed and discarded. If a lunch container is used in conjunction with the invention, the interior of the lunch container remains clean and free of spills and crumbs. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be better understood by reference to the attached figures in which: 
     FIG. 1 is a plan view of the top side of a preferred embodiment in an unfolded state; 
     FIG. 2 is a plan view of the under side of a preferred embodiment in an unfolded state; 
     FIG. 3 is a side view of a preferred embodiment in a folded state; 
     FIG. 4 is a front plan view of a preferred embodiment in a folded state; 
     FIG. 5 is a plan view of the top side of an alternate embodiment in an unfolded state; 
     FIG. 6 is a plan view of the under side of an alternate embodiment in an unfolded state. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     An embodiment of the invention will be described with reference to FIGS. 1-4. With reference to FIGS. 1-4, the invention includes a first side piece 1, a second side piece 2, a third side piece 3, a fourth side piece 4, and a base 5. As shown in FIGS. 1 and 2, the base 5 is attached to each side piece 1, 2, 3, 4. The base 5 and the four side pieces 1, 2, 3, 4 are made of a single piece of continuous material. 
     As shown in FIGS. 1 and 2, the invention is in a flat, unfolded state. FIG. 1 is a plan view of the top side of the invention in a flat, unfolded state. The top side is the side that is exposed to the lunch contents once the liner is inserted into the lunch container. 
     FIG. 2 is a plan view of the under side of the invention in a flat, unfolded state. An adhesive strip 6 is located on the under side of each side piece 1, 2, 3, 4 of the liner to affix the liner to the interior of the lunch container. 
     FIGS. 3 and 4 show the invention in a folded state, as it would be inserted in a lunch container. In FIGS. 3 and 4, the adhesive strips 6 are affixed to the under side of the liner for contact with the interior of a lunch container. 
     In one embodiment, the liner is made of a heavy duty material that is quilted and absorbent on one side and non-porous on the other side. The non-porous side is inserted into the lunch container so that it is adjacent the interior of the lunch container. The quilted side would be the top side of the liner, as shown in FIG. 1. The quilted, absorbent side is exposed to the lunch contents to absorb spills. The non-porous material can be selected from, for example, paper (including cardboard or so-called wax-paper) or plastic. 
     In other embodiments of the invention, the liner may conform to lunch containers of various shapes and sizes. The liner is designed to cover all interior surfaces of a container except for the interior surface of the cover of the container. In the embodiment shown in FIGS. 1-4, the liner is designed to conform to a container having a square base. In another embodiment, the liner may be designed to conform to a container having a rectangular base. 
     In an embodiment shown in FIGS. 5 and 6, the liner is designed to conform to a container having a circular base. In FIGS. 5 and 6, the invention includes a first side piece 7, a second side piece 8, a third side piece 9, a fourth side piece 10, and a base 11. As shown in FIGS. 5 and 6, the base 11 is attached to each side piece 7, 8, 9, 10. The base 11 and the four side pieces 7, 8, 9, 10 are made of a single piece of continuous material. In FIG. 6, adhesive strips 12 are affixed to the side pieces 7, 8, 9, 10.