Prefabricated bindable sheet

Details Prefabricated bindable sheet Prefabricated bindable sheet

1984-02-27

1986-10-21

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

281 2, 282 115A, 412900, 428137, 428156, 428173, 428194, 4285375, B32B 310

Patent

active

046185208

ABSTRACT:
A bindable sheet which includes a recessed marginal edge portion in which a heat-responsive glue is applied, said recessed portion including a plurality of spaced-apart openings therethrough to expose the glue on the opposite side of the sheet from the recess, the thickness of the glue being no greater than the depth of the indentation of the sheet to produce a substantially uniform sheet thickness throughout its entire surface area. The method of binding a plurality of sheets together which includes the steps of indenting the marginal edge of a sheet, applying a ribbon of heat-responsive glue in the indented portion, the thickness of which does not exceed the depth of the indentation recess positioning two sheets together with the glue edges in registration and applying heat and pressure to the glue edges to seal the same together without increasing the thickness of the bound-together sheets.

REFERENCES:
patent: 2649386 (1953-08-01), Snowman
patent: 4447481 (1984-05-01), Holmberg et al.

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