Patent ID: 8007615

Claim:
A method for manufacturing a flexible container cover, comprising: a) providing a flat sheet of flexible film material having a generally rectangular shape with four sides and four recessed cut corners, each pair of adjacent cut corners forming a flap along a side of said sheet between said pair of cut corners, b) providing an elastic band, c) providing a surface having a set of four posts extending therefrom and arranged to define the corners of a generally rectangular shape similar to the shape of said sheet, d) laying said sheet onto said surface between said posts so that said posts are respectively aligned with and positioned within said four recessed cut corners, e) stretching said elastic band around said posts so that said posts hold said stretched elastic band in a generally rectangular shaped configuration above said sheet so that said band has four straight segments, each of said segments running parallel to a respective one of said four sides of said sheet and positioned a predetermined distance inward of the edge of said respective side so that each of said four flaps extends a predetermined distance beyond its respective segment of said stretched elastic band f) utilizing said stretched elastic band as a fulcrum and folding each of said flaps inward and over said elastic band, g) sealing a portion of each of said flaps to respective portion of said sheet to form four pockets or sleeves which enclose said four segments of said elastic band, respectively, and h) removing said elastic band from said posts so that said stretched elastic band can contract within said pockets and gather said four sides of said sheet to form a cover having a stretchable opening.