| 摘要 |
<p>The present invention provides an improved method and apparatus for production of open mesh bags. The method and apparatus produces heat-sealable seam bag stock for making individual bags having a closed end formed by folding the fabric, an open end capable of being sealed and longitudinal, improved strength heat-sealed side seams containing strips of heat-sealable material extending from the closed end to the open end. The process for making open mesh bags comprises the steps of applying to an open mesh substrate (18, 20) a print band material bearing a readable indicator and applying to the substrate at selected positions strips (26, 36) of a thermoplastic resin to which the substrate is heat sealable, wherein the positions of the strips are selected based on the indicators on the print band material.</p> |
