초록 ▼

A flexible cover is formed from a rectangular sheet of plastic film material and a continuous elastic or rubber band. The sheet has a predetermined amount of material cut from each corner. The sheet is placed onto a table between four posts that extend from the table. The sheet is positioned so that

A flexible cover is formed from a rectangular sheet of plastic film material and a continuous elastic or rubber band. The sheet has a predetermined amount of material cut from each corner. The sheet is placed onto a table between four posts that extend from the table. The sheet is positioned so that a post lines up with each corner of the sheet. A rubber band is stretched across the four posts into a similar shaped rectangle and rests just above side edges of the sheet. The side edges of the sheet are folded inward and over the stretched band and heat sealed directly to the sheet. The band is now sealed within a pocket formed along the sides of the sheet. Each corner of the stretched band is released from its post, allowing the band to relax and pull the formed pockets toward the center.

대표청구항 ▼

I claim: 1. 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 sa

I claim: 1. 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 bandf) 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, andh) 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.