Paper welding apparatus for bookbinding machinery

Details Paper welding apparatus for bookbinding machinery Paper welding apparatus for bookbinding machinery

1974-06-17

1976-03-09

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With means applying wave energy or electrical energy...

11 1R, B32B 1902

Patent

active

039430243

ABSTRACT:
This invention bonds the paper pages of books without applying adhesive to the paper. Clamping jaws press the paper sheets of a book together along the edges that are to be bound. The paper is a weldable paper and the sheets bond to one another where they are clamped in contact and raised to a welding temperature by heat of one or both of the clamping jaws, radio frequency energy or otherwise. The temperature must be at least as high as the welding temperature of the paper and not so high that it will scorch or otherwise damage the paper. The clamping and welding apparatus are combined with other book-making machinery and located along the course followed by the unfinished book at a station where the welding step can be done automatically and with substantial saving in the usual labor required.

REFERENCES:
patent: 1747581 (1930-02-01), Frazier
patent: 3131623 (1964-05-01), Seefluth
patent: 3218961 (1965-11-01), Kraft et al.
patent: 3478378 (1967-11-01), Glasgow
patent: 3531358 (1970-09-01), Rost et al.
patent: 3560290 (1971-02-01), Sendor et al.
patent: 3582431 (1971-06-01), Vuilleumier

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