Absorbent apron for high chairs and the like
BACKGROUND AND SUMMARY OF THE INVENTION 
     I have invented a unique disposable absorbent apron for use with an infant high chair or the like. Food catching attachments for use with chairs and especially infant high chairs have been suggested for many years but they have met with little success due largely to the expense, awkwardness and unhygienic nature of such devices as shown in U.S. Pat. Nos. 939,841, 2,585,434 and 3,298,736. 
     Using technology developed for the manufacture of disposable diapers, my absorbent high chair apron can be made so inexpensively that the apron can be readily disposed of after use, thus eliminating the three major defects of existing high chair food catching arrangements, namely, they were expensive, they were awkward to use and store, and they had to be cleaned after each use, which was both time-consuming and unhygienic. 
     My disposable high chair apron is a thin flexible two ply square measuring five feet or slightly more on each side and less than 1/4 inch thick. The apron comprises a liquid impervious lower sheet and an upper layer of liquid absorbent non-woven fibrous material firmly joined to the lower sheet throughout their interface. 
     The liquid impervious lower sheet is preferably a thin flexible film of polyethylene. The upper layer is made of cellulosic or similar fibers of varying length bonded together into a highly absorbent layer between 1/16th and 1/8th of an inch thick. The impervious sheet and the absorbent layer are joined together by spaced beads or lines of adhesive or alternatively by the polyethylene film being extruded directly onto the layer of fibrous material. 
     When the apron is at least five feet square and centered beneath a high chair, it will receive and retain all of the foods and liquids, even a cupful of milk, dropped or spilled by an infant in the chair. Both dry and wet foods will be held by the absorbent layer and prevented from soiling the floor or carpet by the lower sheet of polyethylene. After the chair has been removed, the apron is simply wadded up and disposed of without further cleaning. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view showing my absorbent apron centered beneath an infant high chair; 
     FIG. 2 is a partial cross sectional view of my absorbent apron; and 
     FIG. 3 is a vertically enlarged perspective view, with a portion broken away, of my absorbent apron. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     FIG. 1 of the drawings shows a conventional infant high chair 1 whose four legs 2 are centered upon a two ply apron 3 according to my invention. I have found that when apron 3 is at least five feet on a side or slightly larger that it will retain and absorb all foods and liquids dropped or spilled in the course of feeding the infant in the chair. 
     FIGS. 2 and 3 show the construction of my inexpensive and disposable apron. FIG. 2 is a partial cross section of apron 3 in which a sheet 4 of polyethylene or similar film is shown joined to a layer of bonded fibrous material 5 by beads or lines 6 of adhesive. 
     Sheet 4 is preferably a film of polyethylene manufactured by extrusion and as an alternative to the film being joined to the fibrous layer 4 by spaced beads or lines of adhesive as shown in FIGS. 2 and 3, the film may be extruded directly onto the fibrous layer using techniques known in the art. In order to make the apron as inexpensive as possible and thus make it disposable after a single use, the film should be maintained at a thickness of between 0.001 and 0.003 of an inch. Although preferably polyethylene, equivalent plastic material such as polypropylene or polyvinyl chloride may be used. 
     Layer 5 is composed of cellulosic or similar fibers of varying length thoroughly bonded together into a highly absorbent mat between 1/16th and 1/8th of an inch thick. Although most of the fibers used are for reasons of effectiveness and economy made of cellulose, some of the longer fibers may be rayon fibers of textile length. The techniques for bonding such fibers into a thin highly stable mat having great absorbency is known and described in U.S. Pat. Nos. 3,768,118 and 4,045,833. 
     FIG. 3 is a perspective view of apron 3 showing lower sheet 4 with upper layer 5 partially broken away to expose the spaced lines 6 of adhesive used to firmly join absorbent layer 5 onto liquid impervious sheet 4 throughout the entire interface between sheet 4 and fibrous layer 5. 
     The techniques for inexpensively manufacturing films which are both flexible and liquid impervious and non-woven mats of bonded fibers which are highly absorbent, and for joining such films and mats into a two ply web are well known in the manufacture of disposable baby diapers. These techniques can readily be used to produce two ply webs which are five feet or more wide and these webs can be cut into five-foot lengths to inexpensively manufacture five-foot square absorbent aprons for use with high chairs and the like in accordance with my invention. 
     While I have shown and described the preferred form of my invention, certain changes and modifications will be apparent to those skilled in the art and accordingly my invention is limited only by the scope and spirit of the following claims.