Open Mesh Material and Bags Made Therefrom

An open mesh material extending in machine and cross machine directions, the open mesh material comprising:

• filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a strength to mass ratio in at least one of the machine and cross machine directions of at least 2.67 N/(g/m2), where strength is measured in accordance with ASTM standard D 5034.

An open mesh material comprising:

• filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of less than 20 g/m2 and a burst strength of at least 80 kPa, where burst strength is measured in accordance with ASTM standard D 3786.

An open mesh material comprising:

• filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, wherein the open mesh material extends in machine and cross machine directions, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a breaking elongation in at least one of the machine and cross machine directions of no more than about 50%, where breaking elongation is measured in accordance with ASTM standard D 5034.

An open mesh material comprising:

• filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and tear strength at the points of intersection of over 10 N, where tear strength is stated in terms of material breaking force.

A bag having at least one closed end and at least first and second side walls, at least a portion of the bag being made from an open mesh material extending in machine and cross machine directions, the open mesh material comprising filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a strength to mass ratio in at least one of the machine and cross machine directions of at least 2.67 N/(g/m2), where strength is measured in accordance with ASTM standard D 5034.

A bag having at least one closed end and at least first and second side walls, at least a portion of the bag being made from an open mesh material, the open mesh material comprising:

• filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a burst strength of at least 80 kPa, wherein burst strength is measured in accordance with ASTM standard D 3786.

A bag made at least in part from an open mesh material, the open mesh material comprising filaments that intersect one another;

• at least some of the filaments being 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 least some points of intersection, wherein the open mesh material extends in machine and cross machine directions, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a breaking elongation in at least one of the machine and cross machine directions of no more than about 50%, where breaking elongation is measured in accordance with ASTM standard D 5034.

A bag comprising:

• an open mesh material formed to include a closed end, an open end, at least one side seam at a side thereof, and a seam at the closed end thereof, the open mesh extending in machine and cross machine directions, the open mesh material comprising filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a strength to mass ratio in at least one of the machine and cross machine directions of at least 2.67 N/(g/m2), where strength is measured in accordance with ASTM standard D 5034.

A bag comprising:

• an open mesh material formed to include a closed end, an open end, at least one side seam at a side thereof, and a seam at the closed end thereof, wherein the bag is sufficiently thin and compressible that, when a plurality of the bags are piled in a stack and subjected to a force of 267 kN, the stack contains at least 25 bags/cm.

A bag comprising:

• an open mesh material formed to include a closed end, an open end, at least one side seam at a side thereof, and a seam at the closed end thereof, wherein the open mesh material is being formed from filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of less than 20 g/m2 and a burst strength of at least 80 kPa, where burst strength is measured in accordance with ASTM standard D 3786.

A bag comprising:

• an open mesh material formed to include a closed end, an open end, at least one side seam at a side thereof, and a seam at the closed end thereof, wherein the open mesh material comprises filaments that intersect one another;
• at least some of the filaments being 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 least some points of intersection, wherein the open mesh material extends in machine and cross machine directions, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a breaking elongation in at least one of the machine and cross machine directions of no more than about 50%, where breaking elongation is measured in accordance with ASTM standard D 5034.

A bag comprising:

• first and second opposed sides, each of which is formed at least in part from a strip of a sheet material extending lengthwise of the bag from at least one end thereof, wherein at least one portion of the bag is located between strips of the sheet material and is formed from an open mesh material having a mass per unit area of no more than 30 g/m2,
• an end seam extending across one end of the bag and joining the first and second strips together with at least one layer of the open mesh material therebetween, the end seam being formed from a seal having a strength of at least 2.5 N, where strength is measured in accordance with ASTM standard D 5034.

A bag comprising:

• first and second opposed sides, each of which is formed at least in part from first and second strips of a sheet material extending lengthwise of the bag from at least one end thereof, wherein at least one portion of the bag is located between strips of the sheet material and is formed from an open mesh material having a mass per unit area of no more than 20 g/m2 and a burst strength of at least 80 kPa, where burst strength is measured in accordance with ASTM standard D 3786, an end seam extending across one end of the bag and joining the first and second strips together with at least one layer of the open mesh material therebetween.

A method of forming an end seam on a bag comprising:

• pressing opposed sides of the bag together under heat and pressure at a temperature of less than 149° C. and a dwell time of less than 0.5 seconds and producing a seam having a seam strength of at least 2.5 N, the bag including at least two layers of a sheet material and at least one layer of an open mesh material.

A bag comprising:

• first and second opposed sides, each of which is formed at least in part from a strip of a sheet material extending lengthwise of the bag from at least one end thereof, wherein at least one portion of the bag is located between strips of the sheet material and is formed from an open mesh material comprising filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, wherein the open mesh material extends in machine and cross machine directions, and wherein the open mesh material has a mass per unit area of less than 30 g/m2 and a breaking elongation in at least one of the machine and cross machine directions of no more than about 50%, where breaking elongation is measured in accordance with ASTM standard D 5034;
• an end seam extending across one end of the bag and joining the first and second strips together with at least one layer of the open mesh material therebetween.

A bag comprising:

• first and second opposed side walls, the first side wall being formed at least in substantial part from a strip of an open mesh material and at least a substantial part of the second side wall being formed from a sheet material, wherein
• opposed side edges of the first and second side walls are thermally bonded to one another at vertical seams;
• a lower edge of the strip of the open mesh material is thermally bonded to the sheet material to form a lower horizontal end seam, wherein the open mesh material extends in machine and cross machine directions and is formed from filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of no more than 30 g/m2 and a strength to mass ratio in at least one of the machine and cross machine directions of at least 2.67 N/(g/m2), where strength is measured in accordance with ASTM standard D 5034.

A bag comprising:

• first and second opposed side walls, the first side wall being formed at least in substantial part from a strip of an open mesh material and at least a substantial part of the second side wall being formed from a sheet material, wherein
• opposed side edges of the first and second side walls are thermally bonded to one another at vertical seams;
• a lower edge of the strip of the open mesh material is thermally bonded to the sheet material to form a lower horizontal end seam, wherein the open mesh material extends in machine and cross machine directions and is formed from filaments that intersect one another, at least some of the filaments being 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 least some points of intersection, and wherein the open mesh material has a mass per unit area of no more than 30 g/m2 and a breaking elongation in at least one of the machine and cross machine directions of no more than about 50%, where breaking elongation is measured in accordance with ASTM standard D 5034.