Business form such as an envelope

Claim 2

A continuous business form envelope assembly comprising top and bottom elongated plies defining fronts and backs of a series of connected envelopes; at least one intermediate elongated ply between said top and bottom plies defining insert material within each of the series of connected envelopes, said intermediate ply being die cut at intervals along its length to define openings through which adhesive may extend to join said top and bottom plies and define upper and lower individual envelope edges; one longitudinal marginal edge of said intermediate ply being adhered to said top and bottom plies along corresponding longitudinal marginal edges thereof; at least one line of perforation extending across the bottom ply to define a tear strip that may be removed to partly expose said intermediate ply, one end of said tear strip being adhered to one side of part of said one longitudinal marginal edge of said intermediate ply, the other side of said part being adhered to the top ply via a less porous material on the latter; said parts being separated from the remainder of said one longitudinal marginal edge by a line of weakening and connected to the remainder of said intermediate ply by one or more frangible connections which serve to register said remainder between said top and bottom plies; said remainder of said intermediate ply otherwise being free of connection to said one longitudinal marginal edge; whereby removal of said tear strip from an envelope will remove said part by reason of it being adhered to said tear strip and only weakly adhered to said top ply because of said less porous material, and thereby will rupture said frangible connection and expose and free said insert material within the envelope for extraction therefrom.

Claim 3

The continuous business form envelope assembly of claim 1 further including hot spot carbon between said top and intermediate plies to provide for image transfer to said intermediate ply upon impact printing, said less porous material being formed of hot spot carbon.

Claim 4

The continuous business form envelope assembly of claim 1 wherein said line of perforation is defined by aligned Y-shaped cuts.

Claim 5

The continuous business form envelope assembly of claim 3 wherein the base of each Y-shaped cut is disposed between the arms of an adjacent Y-shaped cut.

Claim 6

A continuous business form envelope assembly comprising: top and bottom elongated plies defining fronts and backs of a series of connected envelopes; at least one intermediate elongated ply between said top and bottom plies defining insert material within each of the series of connected envelopes, said intermediate ply being die cut at intervals along its length to define openings through which adhesive may extend to join said top and bottom plies and define upper and lower individual envelope edges; hot spot carbon on said top ply facing said intermediate ply for transfer of impact printing images thereto; one longitudinal marginal edge of said intermediate ply being adhered to said top and bottom plies along corresponding longitudinal marginal edges thereof; at least one line of perforation defined by a series of aligned, Y-shaped cuts extending across the bottom ply and intersected by a slit in the bottom ply to define a tear strip that may be removed to partly expose said intermediate ply, one end of said tear strip being adhered to one side of part of said one longitudinal marginal edge of said intermediate ply, the other side of said part being adhered to the top ply via an area of hot spot carbon on the latter; said part being separated from the remainder of said one longitudinal marginal edge by line of weakening and connected to the remainder of said intermediate ply by one or more frangible connections which serve to register said remainder between said top and bottom plies; said remainder of said intermediate ply otherwise being free of connection to said one longitudinal marginal edge; whereby removal of said tear strip from an envelope will remove said part by reason of it being adhered to said tear strip and only weakly adhered to said top ply because of said hot spot carbon and thereby will rupture said frangible connection and expose and free said insert material within the envelope for extraction therefrom.

Claim 7

A continuous business form envelope assembly comprising: top and bottom elongated plies defining fronts and backs of a series of connected envelopes; at least one intermediate elongated ply between said top and bottom plies defining insert material within each of the series of connected envelopes, said intermediate ply being die cut at intervals along its length to define openings through which adhesive may extend to join said top and bottom plies and define upper and lower individual envelope edges; hot spot carbon on said top ply facing said intermediate ply for transfer of impact printing images thereto; one longitudinal marginal edge of said intermediate ply being adhered to said top and bottom plies along corresponding longitudinal marginal edges thereof; at least one line of perforation defined by a series of aligned, Y-shaped cuts extending across the bottom ply and intersected by a slit in the bottom ply to define a tear strip that may be removed to partly expose said intermediate ply, one end of said tear strip being adhered to one side of part of said one longitudinal marginal edge of said intermediate ply, the other side of said part being adhered to the top ply via an area of hot spot carbon on the latter; said part being separated from the remainder of said one longitudinal marginal edge by line of weakening and connected to the remainder of said intermediate ply by one or more frangible connections which serve to register said remainder between said top and bottom plies; said remainder of said intermediate ply otherwise being free of connection to said one longitudinal marginal edge; whereby removal of said tear strip from an envelope will remove said part by reason of it being adhered to said tear strip and only weakly adhered to said top ply because of said hot spot carbon and thereby will rupture said frangible connection and expose and free said insert material within the envelope for extraction therefrom.

Claim 8

In a multiple ply business form having first and second superimposed plies or sheets of paper; hot spot carbon, CB or CFB material on a side of said first ply or sheet facing said second ply or sheet and including an area whereby images impacted on said first ply or sheet will be transmitted to the second ply or sheet, and adhesive releasably joining at least parts of said first and second plies or sheets at a location remote from said area; the improvement wherein additional hot spot carbon, CB or CFB material is placed on said side at said location and said adhesive extends between said additional material and said second ply or sheet to form a weak, releasable adhesive bond thereat.

Claim 9

In a multiple ply business form having first and second superimposed plies or sheets of paper; hot spot carbon, CB or CFB material on a side of said first ply or sheet facing said second ply or sheet and including an area whereby images impacted on said first ply or sheet will be transmitted to the second ply or sheet, and adhesive releasably joining at least parts of said first and second plies or sheets at a location remote from said area; the improvement wherein additional hot spot carbon, CB or CFB material is placed on said side at said location and said adhesive extends between said additional material and said second ply or sheet to form a weak, releasable adhesive bond thereat.

Claim 10

The multiple ply business form of claim 6 wherein said adhesive, at points other than said location, extends directly between said first and second plies or sheets to form a strong adhesive bond at said points.

Claim 11

The continuous business form envelope assembly of claim 1 wherein there are a plurality of said intermediate plys.

Claim 12

The continuous business form envelope assembly of claim 5 wherein there are a plurality of said intermediate plys.