Web-type multiple-part business form stock having pre-glued but non-adhered cross-web heat seal glue lines designed for activation to seal outgoing envelopes after printing-type personalization of potential froms thereof

Claim 1

A web-type multiple-part business form stock, comprising: two relatively outer webs having inner faces and outer faces and an indeterminate length in a logitudinal direction; correspondingly-placed transverse lines of weakness provided in said two relatively outer webs for dividing said relatively outer webs into a corresponding succession of envelope fronts and envelope backs; each said relatively outer web including at least one marginal strip means provided with a row of drivable elements for use in advancing the respective web longitudinally in a uniform manner, and a longitudinal line of weakness extending between said row of drivable elements and a medial portion of major transverse extent of the respective said web, whereby, after use, the respective said row of drivable elements may be severed from said medial portion along the respective said longitudinal lines of weakness; at least one field designated on an outer face of at least one of said relatively outer webs, on said medial portion thereof, for reception of strikings of an impact printer for printing variable information thereon or therethrough; two longitudinal glue line means gluing said inner faces of said two outer webs to one another along respective sites which are spaced transversally from one another and located more medially of the respective said outer webs than the respective said marginal strip means so as to define left and right ends for a succession of potential envelopes; and disposed longitudinally between each of said transverse lines of weakness, at least one strip of non-active heat-activatable adhesive applied to a respective one of said inner faces of at least one of said two outer webs so as to extend transversally thereof between said two longitudianl glue line means, each said strip of non-active heat-activatable adhesive being free of adhesive securement to the respective other of said inner faces, but disposed to be securable thereto upon heat-activation of said heat-activatable adhesive, whereby said inner faces of said two outer webs may be left unconnected by said strips of non-active heat-activatable adhesive between said two longitudinal glue line means, until after variable information has been impact printed on said at least one field, for therby reducing printing problems associated with form stock tenting and air entrapment.

Claim 12

A method for processing a web-type multiple-part business form stock into a succession of individualized separate mailers, comprising: providing a web-type multiple-part business form stock as a coposite web of indeterminate length, which composite web includes: two relatively outer webs having inner faces and outer faces and an indeterminate length in a longitudinal direction; correspondingly-placed transverse lines of weakness provided in said two relatively outer webs for dividing said relatively outer webs into a corresponding succession of envelope fronts and envelope backs; each said relatively outer web including at least one marginal strip means provided with a row of drivable elements for use in advancing the respective web longitudinally in a uniform manner, and a longitudinal line of weakness extending between said row of drivable elements and a medial portion of major transverse extent of the respective said web, whereby, after use, the respective said row of drivable elements may be severed from said medial portion along the respective said longitudinal lines of weakness; at least one field designated on an outer face of at least one of said relatively outer webs, on said medial portion thereof, for reception of strikings of an impact printer for printing variable information thereon or therethrough; two longitudinal glue line means gluing said inner faces of said two outer webs to one another along respective sites which are spaced transversally from one another and located more medially of the respective said outer webs than the respective said marginal strip means so as to define left and right ends for a succession of potential envelopes; and disposed longitudinally between each of said transverse lines of weakness, at least one strip of nonactive heat-activatable adhesive applied to a respective one of said inner faces of at least one of said two outer webs so as to extend transversally thereof between said two longitudinal glue line means, each said strip of non-active heat-activatable adhesive being free of adhesive securement to the respective other of said inner faces, but disposed to be securable thereto upon heat-activation of said heat- activatable adhesive; Z-folding said composite web along a regular succession of at least some of said transverse lines of weakness; transporting said composite web from one physical location to another while said composite web is so-folded; at said other physical location, beginning with a leading end of said composite web, progressively unfolding said composite web and feeding the unfolded composite web progressively through a variable printing station in which at least one field of unique information is printed on said composite web between each longitudinally neighboring two of said transverse lines of weakness; heating a moving segment of said composite web in or downstream of said variable printing station for activating said non-activated heat-activatable adhesive for adhering said two relatively outer webs to one another along said strips of non-active heat-activatable adhesive; and progressively severing said composite web at or downstream of said segment, along said transverse lines of weakness, into a succession of individual mailers.

Claim 13

A method for processing a web-type multiple-part business form stock into a succession of individualized separate mailers, comprising: providing a web-type multiple-part business form stock as a coposite web of indeterminate length, which composite web includes: two relatively outer webs having inner faces and outer faces and an indeterminate length in a longitudinal direction; correspondingly-placed transverse lines of weakness provided in said two relatively outer webs for dividing said relatively outer webs into a corresponding succession of envelope fronts and envelope backs; each said relatively outer web including at least one marginal strip means provided with a row of drivable elements for use in advancing the respective web longitudinally in a uniform manner, and a longitudinal line of weakness extending between said row of drivable elements and a medial portion of major transverse extent of the respective said web, whereby, after use, the respective said row of drivable elements may be severed from said medial portion along the respective said longitudinal lines of weakness; at least one field designated on an outer face of at least one of said relatively outer webs, on said medial portion thereof, for reception of strikings of an impact printer for printing variable information thereon or therethrough; two longitudinal glue line means gluing said inner faces of said two outer webs to one another along respective sites which are spaced transversally from one another and located more medially of the respective said outer webs than the respective said marginal strip means so as to define left and right ends for a succession of potential envelopes; and disposed longitudinally between each of said transverse lines of weakness, at least one strip of nonactive heat-activatable adhesive applied to a respective one of said inner faces of at least one of said two outer webs so as to extend transversally thereof between said two longitudinal glue line means, each said strip of non-active heat-activatable adhesive being free of adhesive securement to the respective other of said inner faces, but disposed to be securable thereto upon heat-activation of said heat- activatable adhesive; Z-folding said composite web along a regular succession of at least some of said transverse lines of weakness; transporting said composite web from one physical location to another while said composite web is so-folded; at said other physical location, beginning with a leading end of said composite web, progressively unfolding said composite web and feeding the unfolded composite web progressively through a variable printing station in which at least one field of unique information is printed on said composite web between each longitudinally neighboring two of said transverse lines of weakness; heating a moving segment of said composite web in or downstream of said variable printing station for activating said non-activated heat-activatable adhesive for adhering said two relatively outer webs to one another along said strips of non-active heat-activatable adhesive; and progressively severing said composite web at or downstream of said segment, along said transverse lines of weakness, into a succession of individual mailers.