Robert Frei - Antigo WI, US Corbett Hefner - Antigo WI, US Friedrich Landertshamer - Oftering, AT Alan Mueller - Idaho Falls ID, US
Assignee:
VOLM COMPANIES, INC. - Antigo WI
International Classification:
B65D 30/06 B32B 5/12 B32B 37/30 B65B 3/02
US Classification:
383117, 428109, 1563084, 53452
Abstract:
An open mesh material includes filaments () that intersect one another. At least some of the filaments are composite filaments having a carrier portion of a relatively high melting point and a bonding portion of a relatively low melting point, the bonding portion of each composite filament being thermally bonded to other filaments at points of intersection. The material may be a non-woven fabric that contains at least two layers of weft filaments () that may be bordered on one or both sides by a layer of warp filaments (). When compared to other open mesh materials, the open mesh material disclosed herein has a superior combination of some or all of high strength, light weight, high dimensional stability, and openness. Also disclosed herein are articles can be made at least in part from the material including L-seam bags (), form fill and seal (FFS) bags (), and multi-substrate bags (). Methods of making those bags also are disclosed.
A bottom gusseted bag includes first and second opposed walls that face one another, each of the first and second walls having an upper end and a lower end, and a gusseted bottom that connects the bottom ends of the first and second walls to one another. The gusseted bottom includes at least four panels that are formed from an open mesh material and that collectively form at least three pleats. Opposed side edges of all of the panels are thermally bonded directly to one another along first and second opposed seams extending at least the majority of the length of each of the panels. The gusseted bottom may have a side seam strength of at least about 1.lb (4.5 N). The first and second side walls are formed at least in part of material, such a film, that is thermally bondable to the mesh material.
Robert Frei (1971-1975), Janet Peters (1951-1955), Tracy Baker (1985-1989), Corinne Jan (1968-1972), Tiffany Smith (1998-2002), Paul Wahrhaftig (1952-1956)