초록 ▼

The present invention provides an improved side-sealed bag comprising an open, mesh-like fabric and a label section. The bag has a closed end formed by a fold in the fabric, an opposing end and longitudinal, heat-sealed side seams extending from the closed end to the opposing end. The bags are used

The present invention provides an improved side-sealed bag comprising an open, mesh-like fabric and a label section. The bag has a closed end formed by a fold in the fabric, an opposing end and longitudinal, heat-sealed side seams extending from the closed end to the opposing end. The bags are used for packaging articles for which visibility and/or breathability of the bag fabric are useful characteristics. In a preferred embodiment, the bags are also suited for manufacture and filling using high speed, automated equipment.

대표청구항 ▼

1. A method of high-speed bag manufacturing, comprising the step of:a. bringing into contact an edge of at least one first open thermoplastic fabric section, and an edge of at least one second open thermoplastic fabric sheet with at least one film section to form a prepared sheet, said at least one

1. A method of high-speed bag manufacturing, comprising the step of:a. bringing into contact an edge of at least one first open thermoplastic fabric section, and an edge of at least one second open thermoplastic fabric sheet with at least one film section to form a prepared sheet, said at least one film section selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric,wherein said prepared sheet is V-folded along a central axis to form a closed butt end, and wherein opposing overlapping edges of said prepared sheet are sealed via a thermoplastic sealing strip to form a bag having at least one opening.2. The method of claim 1, wherein said edge of said at least one first open thermoplastic fabric sheet and said edge of said at least one second open thermoplastic fabric sheet are heat sealed to opposing edges of said at least one film section.3. The method of claim 1, wherein said at least one first open thermoplastic fabric sheet comprises a width at least equal to a combined width of said at least one film section and said at least one second open thermoplastic fabric sheet, such that said central axis is disposed on said at least one first open thermoplastic fabric sheet.4. The method of claim 1, wherein said at least one first open thermoplastic fabric sheet and said at least one second open thermoplastic fabric sheet are cross-laminated thermoplastic nonwoven net-like fabric.5. The method of claim 1, wherein said at least one film section is a polymeric film capable of receiving print thereon to permit said at least one film section to serve as a label section for said bag.6. The method of claim 1, wherein said opposing overlapping edges of said prepared sheet are sealed via a first said thermoplastic sealing strip and a second said thermoplastic sealing strip.7. The method of claim 6, wherein said first thermoplastic sealing strip and said second thermoplastic sealing strip are carried by opposing edges of said at least one first open thermoplastic fabric sheet, extending perpendicularly from said central axis through a remaining width of said at least one first open thermoplastic fabric sheet.8. The method of claim 7, wherein V-folding of said prepared sheet along said central axis results in said first thermoplastic sealing strip and said second thermoplastic sealing strip sealing said opposing overlapping edges of said prepared sheet upon application of heat and pressure thereto.9. A method of high-speed bag manufacturing, comprising the steps of:a. bringing into contact an edge of at least one first open thermoplastic fabric sheet, and an edge of at least one second open thermoplastic fabric section with at least one film section to form a prepared sheet, said at least one film section selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said prepared sheet is V-folded along a central axis to form a closed butt end, and wherein opposing overlapping edges of said prepared sheet are sealed to form a bag having at least one opening; andb. sealing said opposing overlapping edges of said prepared sheet via a sealing means, said sealing means comprising a first thermoplastic sealing strip and a second thermoplastic sealing strip.10. The method of claim 9, wherein said edge of said at least one first open thermoplastic fabric sheet and said edge of said at least one second open thermoplastic fabric sheet are heat sealed to opposing edges of said at least one film section.11. The method of claim 9, wherein said at least one first open thermoplastic fabric sheet comprises a width at least equal to a combined width of said at least one film section and said at least one second open thermoplastic fabric sheet, such that said central axis is disposed on said at least one first open thermoplastic fabric sheet.12. The method of claim 9, wherein said at least one first open thermoplastic fabric sheet and said at least one second open thermoplastic fabric sheet are a cross-laminated thermoplastic nonwoven net-like fabric.13. The method of claim 9, wherein said at least one film section is a polymeric film capable of receiving print thereon to permit said at least one film section to serve as a label section for said bag.14. The method of claim 9, wherein said first thermoplastic sealing strip and said second thermoplastic sealing strip are carried by opposing edges of said at least one first open thermoplastic fabric sheet, extending perpendicularly from said central axis through a remaining width of said at least one first open thermoplastic fabric sheet.15. The method of claim 14, wherein V-folding of said prepared sheet along said central axis results in said first thermoplastic sealing strip and said second thermoplastic sealing strip sealing said opposing overlapping edges of said prepared sheet upon application of heat and pressure thereto.16. A method of high-speed bag manufacturing, comprising the steps of:a. bringing into contact an edge of at least one first open thermoplastic fabric sheet, and an edge of at least one second open thermoplastic fabric sheet with at least one film section to form a prepared sheet, said at least one film section selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said at least one first open thermoplastic fabric sheet comprises a width at least equal to a combined width of said at least one film section and said at least one second open thermoplastic fabric section such that a central axis is disposed on said at least one first open thermoplastic fabric section, andwherein said prepared sheet is V-folded along said central axis to form a closed, butt end, and wherein opposing overlapping edges of said prepared sheet are sealed via a thermoplastic sealing strip to form a bag having at least one opening.17. The method of claim 16, wherein said edge of at least one first open thermoplastic fabric sheet and said edge of said at least one second open thermoplastic fabric sheet are heat sealed to opposing edges of said at least one film section.18. The method of claim 16, wherein said at least one first open thermoplastic fabric sheet and said at least one second thermoplastic fabric sheet are a cross-laminated thermoplastic nonwoven net-like fabric.19. The method of claim 16, wherein said at least one film section is a polymeric film capable of receiving print thereon to permit said at least one film section to serve as a label section for said bag.20. The method of claim 16, wherein said opposing overlapping edges of said prepared sheet are sealed via a first said thermoplastic sealing strip and a second said thermoplastic sealing strip.21. The method of claim 20, wherein said first thermoplastic sealing strip and said second thermoplastic sealing strip are carried by opposing edges of said at least one first open thermoplastic fabric sheet, extending perpendicularly from said central axis through a remaining width of said at least one first open thermoplastic fabric sheet.22. The method of claim 21, wherein V-folding of said prepared sheet along said central axis results in said first thermoplastic sealing strip and said second thermoplastic sealing strip sealing said opposing overlapping edges of said prepared sheet upon application of heat and pressure thereto.23. A method of high-speed bag manufacturing, comprising the steps of:a. bringing into contact an edge of at least one first continuous stream of open thermoplastic fabric, and an edge of at least one second continuous stream of open thermoplastic fabric with at least one continuous stream of film to form a bag stock, said at least one continuous stream of film selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric,wherein said bag stock is V-folded along a longitudinally disposed central axis to form a continuous, closed butt end, and wherein said bag stock is transversely sealed via a plurality of thermoplastic sealing strips, and cut, at pre-selected distances to form bags having at least one opening.24. The method of claim 23, wherein said edge of said at least one first continuous stream of open thermoplastic fabric and said edge of said at least one second continuous stream of open thermoplastic fabric are heat sealed to opposing edges of said at least one continuous stream of film.25. The method of claim 23, wherein said at least one first continuous stream of open thermoplastic fabric comprises a width at least equal to a combined width of said at least one continuous stream of film and said at least one second continuous stream of open thermoplastic fabric, such that said central axis is disposed on said at least one first continuous stream of open thermoplastic fabric.26. The method of claim 23, wherein said at least one first continuous stream of open thermoplastic fabric and said at least one second continuous stream of open thermoplastic fabric are a cross-laminated thermoplastic nonwoven net-like fabric.27. The method of claim 23, wherein said at least one continuous stream of film is polymeric film capable of receiving print thereon to permit said at least one continuous stream of film to serve as a label section for said bag.28. The method of claim 23, wherein said plurality of thermoplastic sealing strips are carried by and transversely positioned at regular intervals along a longitudinal direction of said at least one first continuous stream of open thermoplastic fabric, extending perpendicularly from said central axis through a remaining width of said at least one first continuous stream of open thermoplastic fabric, such that said bags cut from said bag stock each comprise at least one first thermoplastic sealing strip and at least one second thermoplastic sealing strip positioned at opposite edges thereof.29. The method of claim 28, wherein application of heat and pressure to V-folded said bag stock results in said plurality of thermoplastic sealing strips being transversely sealed across V-folded said bag stock.30. The method of claim 28, wherein each thermoplastic sealing strip of said plurality of thermoplastic sealing strips comprise a width at least equal to a combined width of said at least one first thermoplastic sealing strip and said at least one second thermoplastic sealing strip such that transverse cutting of said bag stock along each said thermoplastic sealing strip of said plurality of thermoplastic sealing strips yields said at least one first thermoplastic sealing strip for a first cut said bag, and said at least one second thermoplastic sealing strip for a second cut said bag.31. A method of high-speed bag manufacturing, comprising the steps of:a. bringing into contact an edge of at least one first continuous stream of open thermoplastic fabric, and an edge of at least one second continuous stream of open thermoplastic fabric with at least one continuous stream of film to form a bag stock, said at least one continuous stream of film selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said bag stock is V-folded along a longitudinally disposed central axis to form a continuous, closed butt end, and wherein said bag stock is transversely sealed and cut, at pre-selected distances to form bags having at least one opening; andb. sealing V-folded said bag stock at said pre-selected distances via a sealing means, said sealing means comprising a plurality of thermoplastic sealing strips, wherein said bags cut from said bag stock each comprise a first thermoplastic sealing strip and a second thermoplastic sealing strip positioned opposite edges thereof.32. The method of claim 31, wherein said edge of said at least one first continuous stream of open thermoplastic fabric and said edge of said at least one second continuous stream of open thermoplastic fabric are heat sealed to opposing edges of said at least one continuous stream of film.33. The method of claim 23, wherein said at least one first continuous stream of open thermoplastic fabric comprises a width at least equal to a combined width of said at least one continuous stream of film and said at least one second continuous stream of open thermoplastic fabric, such that said central axis is disposed on said at least one first continuous stream of open thermoplastic fabric.34. The method of claim 31, wherein said at least one first continuous stream of open thermoplastic fabric and said at least one second continuous stream of open thermoplastic fabric are a cross-laminated thermoplastic nonwoven net-like fabric.35. The method of claim 31, wherein said at least one continuous stream of film is polymeric film capable of receiving print thereon to permit said at least one continuous stream of film to serve as a label section for said bag.36. The method of claim 31, wherein said plurality of thermoplastic sealing strips are carried by and transversely positioned at regular intervals along a longitudinal direction of said at least one first continuous stream of open thermoplastic fabric, extending perpendicularly from said central axis through a remaining width of said at least one first continuous stream of open thermoplastic fabric.37. The method of claim 36, wherein application of heat and pressure to V-folded said bag stock results in said plurality of thermoplastic sealing strips being transversely sealed across V-folded said bag stock.38. The method of claim 36, wherein each thermoplastic sealing strip of said plurality of thermoplastic sealing strips comprise a width at least equal to a combined width of said at first thermoplastic sealing strip and said second thermoplastic sealing strip such that transverse cutting of said bag stock along each said thermoplastic sealing strip of said plurality of thermoplastic sealing strips yields said first thermoplastic sealing strip for a first cut said bag, and said second thermoplastic sealing strip for a second cut said bag.39. A method of high-speed bag manufacturing, comprising the steps of:a. bringing into contact an edge of at least one first continuous stream of open thermoplastic fabric, and an edge of at least one second continuous stream of open thermoplastic fabric with at least one continuous stream of film to form a bag stock, said at least one continuous stream of film selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said at least one first continuous stream of open thermoplastic fabric compirses a width at least equal to a combined width of said at least one continuous stream of film and said at least one second continuous stream of open thermoplastic fabric such that a central axis is longitudinally disposed on said at least one first continuous stream of open thermoplastic fabric, andwherein said bag stock is V-folded along said central axis to form a continuous, closed butt end, and wherein said bag stock is transversely sealed via a plurality of thermoplastic sealing strips, and cut, at pre-selected distances to form bags having at least one opening.40. The method of claim 39, wherein at least one edge of said at least one first continuous stream of the open thermoplastic fabric and at least one edge of said at least one second continuous stream of open thermoplastic fabric are heat sealed to opposing edges of said at least one continuous stream of film.41. The method of claim 39, wherein said at least one first continuous stream of open thermoplastic fabric and said at least one second continuous stream of open thermoplastic fabric are a cross-laminated thermoplastic nonwoven net-like fabric.42. The method of claim 39, wherein said at least one continuous stream of film is a polymeric film capable of receiving print thereon to permit said at least one continuous stream of film to serve as a label section for said bag.43. The method of claim 39, wherein said plurality of thermoplastic sealing strips are carried by and transversely positioned at regular intervals along a longitudinal direction of said at least one first continuous stream of open thermoplastic fabric, extending perpendicularly from said central axis through a remaining width of said at least one first continuous stream of open thermoplastic fabric, such that said bags cut from said bag stock each comprise at least one first thermoplastic sealing strip and at least one second thermoplastic sealing strip positioned at opposite edges thereof.44. The method of claim 43, wherein application of heat and pressure to V-folded said bag stock results in said plurality of thermoplastic sealing strips being transversely sealed across V-folded said bag stock.45. The method of claim 43, wherein each thermoplastic sealing strip of said plurality of thermoplastic sealing strips comprise a width at least equal to a combined width of said at least one first thermoplastic sealing strip and said at least one second thermoplastic sealing strip such that transverse cutting of said bag stock along each said thermoplastic sealing strip of said plurality of thermoplastic sealing strips yields said at least one first thermoplastic sealing strip for a first cut said bag, and said at least one second thermoplastic sealing strip for a second cut said bag.