초록 ▼

A method and apparatus for permanently binding sheets of paper into a cover inexpensively and quickly is disclosed. The cover has a top and bottom leaf with a center fold therebetween and a folding score on each leaf near the center fold. An elongated strip of heat reactivatible adhesive is applied

A method and apparatus for permanently binding sheets of paper into a cover inexpensively and quickly is disclosed. The cover has a top and bottom leaf with a center fold therebetween and a folding score on each leaf near the center fold. An elongated strip of heat reactivatible adhesive is applied to the inner surface of one or both of the leaves between the folding score on the leaf and the center fold. A plurality of sheets are positioned adjacent the strip or strips of adhesive and the entire assembly is then fed into a laminator machine which heats and presses the heat reactivatible adhesive to cause it to flow back towards the sheets. As the adhesive cools the ends of the sheets are held in intimate contact between the leaves near the center fold.

대표청구항 ▼

A bound book comprising: (a) a cover having first and second leaves of substantially the same surface area and a center fold joining the two leaves; (b) a plurality of paper sheets having ends positioned adjacent and parallel to but not in contact with the center fold; and (c) a melted adhesive long

A bound book comprising: (a) a cover having first and second leaves of substantially the same surface area and a center fold joining the two leaves; (b) a plurality of paper sheets having ends positioned adjacent and parallel to but not in contact with the center fold; and (c) a melted adhesive longitudinally extending strip adjacent and parallel with the center fold and having first and second substantially parallel surface portions in respective binding contact with inside binding surface portions of the first and second leaves, said center fold being positioned at one side of the strip and at an opposite side a sidewall of the strip being formed by a flowed back portion engaging in alignment said ends of the paper sheets, a curved transition portion being provided between said center fold and each of said first and second leaf binding surface portions, and a width of each of said first and second parallel surface portions being substantially greater than a width of the side wall engaging the ends of the paper sheets.