Patent
1978-03-27
1979-11-27
Hinson, Harrison L.
93 1F, 93 1G, F15B 2104
Patent
active
041754760
ABSTRACT:
A method and apparatus for forming reinforced top file folders wherein a paperboard web is first sent through a cutting and scoring station where the web is severed transversely and the various score lines are formed therein, including one which is a relatively short distance behind the leading edge of the portion thus severed. In a subsequent station, an adhesive is applied in the form of a stripe immediately behind the score line. A hold down means is provided beyond the stage of adhesive application and is positioned such as to be received against the score line. A turnover means is positioned beyond the hold down means for folding the tab portion upwardly while the score line is received against the hold down means. A substantially right angle bend is thereby achieved between the forward marginal or tab portion and the score line with the adhesive behind it. The web is then severed in this condition by the cutting station and the adhesive coated and partly folded web is then pushed through the remainder of the turnover means and finally passes through a pressure means beyond the turnover means to complete the folding of the adhesived portion against the remainder of the web, thereby providing a double thickness at the leading edge of the web.
REFERENCES:
patent: 2052623 (1936-09-01), Harby
patent: 2138788 (1938-11-01), Hart et al.
patent: 3865017 (1975-02-01), Borski
patent: 3978191 (1976-08-01), Allen et al.
H. G. Weber & Co., Inc.
Hinson Harrison L.
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