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US 2008/0166516 A1Published application
Stitchbonded Fabric With A Discontinuous Substrate
AssigneeXymid, L.L.C.
InventorDimitri P. Zafiroglu
Life of this patent
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Abstract
A stitchbonded fabric has a regionally segmented discontinuous base layer of webs of substrate material extending in the machine direction which webs are laterally separated by a region devoid of substrate material. The lateral separation in the stitchbonded fabric is formed prior to stitching by a method that includes slitting the substrate and folding the material adjacent the slits outwardly in contact with substrate material outboard of the slit, or by a method that includes slitting the substrate while applying tension.
Claims8
A stitchbonded fabric defining a machine direction and a cross direction perpendicular thereto, the fabric being formed by the process comprising the steps of
- (A) providing a substrate material having two outboard edges along the machine direction, and providing a continuously operable multi-needle stitching machine,
- (B) feeding the substrate material to an entrance of the stitching machine,
- (C) slitting the substrate material at one or more positions intermediate the outboard edges, thereby producing a slit in the substrate material at each of said positions defining opposing lips, the slit extending in the machine direction,
- (D) folding at least one lip outward in contact with the substrate material adjacent the slit thereby forming a discontinuous base layer comprising a multilayer region of the substrate material extending in the machine direction and an open space region of the base layer extending in the machine direction and adjacent to the multilayer region which open space region is devoid of substrate material, and
- (E) multi-needle stitching threads throughout the extent of the discontinuous base layer with at least one pattern of stitches in rows running in a machine direction and spaced apart in a cross direction, thereby forming an integrated fabric of stitched-over substrate areas of the base layer.
2 more elements
A process for making a stitchbonded fabric comprising the steps of
- (A) providing a substrate material having two outboard edges along the machine direction, and providing a continuously operable multi-needle stitching machine,
- (B) feeding the substrate material to an entrance of the stitching machine,
- (C) slitting the substrate material at one or more positions intermediate the outboard edges, thereby producing a slit in the substrate material at each of said positions defining opposing lips, the slit extending in the machine direction,
- (D) folding at least one lip outward in contact with the substrate material adjacent the slit thereby forming a discontinuous base layer comprising a multilayer region of the substrate material extending in the machine direction and an open space region of the base layer extending in the machine direction and adjacent to the multilayer region which open space region is devoid of substrate material, and
- (E) multi-needle stitching threads throughout the extent of the discontinuous base layer with at least one pattern of stitches in rows running in a machine direction and spaced apart in a cross direction, thereby forming an integrated fabric of stitched-over substrate areas of the base layer.
2 more elements
A stitchbonded fabric defining a machine direction and a cross direction perpendicular thereto, the fabric being formed by the process comprising the steps of
- (A) providing a web of substrate material and having two outboard edges along the machine direction, and providing a continuously operable multi-needle stitching machine,
- (B) feeding the web to an entrance of the stitching machine,
- (C) slitting the web at one or more positions intermediate the outboard edges, thereby producing a slit in the web at each of said positions defining opposing lips, the slit extending in the machine direction,
- (D) applying a tension force to the web in the machine direction effective to cause the lips of each slit to separate from each other in the cross machine direction thereby forming a discontinuous base layer comprising two regions of the web extending in the machine direction and an open space region of the base layer devoid of substrate material extending in the machine direction between the two regions of the web, and
- (E) multi-needle stitching threads throughout the extent of the discontinuous base layer with at least one pattern of stitches in rows running in a machine direction and spaced apart in a cross direction, thereby forming an integrated fabric of stitched-over substrate areas of the base layer.
2 more elements
A process for making a stitchbonded fabric comprising the steps of
- (A) providing a web of substrate material and having two outboard edges along the machine direction, and providing a continuously operable multi-needle stitching machine,
- (B) feeding the web to an entrance of the stitching machine,
- (C) slitting the web at one or more positions intermediate the outboard edges, thereby producing a slit in the web at each of said positions defining opposing lips, the slit extending in the machine direction,
- (D) applying a tension force to the web in the machine direction effective to cause the lips of each slit to separate from each other in the cross machine direction thereby forming a discontinuous base layer comprising two regions of the web extending in the machine direction and an open space region of the base layer devoid of substrate material extending in the machine direction between the two regions of the web, and
- (E) multi-needle stitching threads throughout the extent of the discontinuous base layer with at least one pattern of stitches in rows running in a machine direction and spaced apart in a cross direction, thereby forming an integrated fabric of stitched-over substrate areas of the base layer.
2 more elements
Dependencies are inferred from the claim text.