B - Operations – Transporting – 31 – F
Patent
B - Operations, Transporting
31
F
154/30.02
B31F 1/20 (2006.01) B31F 1/28 (2006.01) B32B 3/28 (2006.01) B32B 29/08 (2006.01)
Patent
CA 1292666
ABSTRACT OF THE DISCLOSURE In an apparatus for making corrugated board including a single-facer unit for making single-face board and a double-facer unit adaptable to receive the output of the single-facer unit for making double-face board therefrom, the improvements comprising in the single-facer unit an adhesive roller having a cylindrical outer surface with spaced rows of depressions formed therein, mechanisms for engaging a liner member with the applicator roller over a predetermined arcuate area of the surface thereof for transferring adhesive dots corresponding to the shape and spacing of the rows of depressions to one surface of the liner member, a container positioned adjacent to the applicator roller in position to expose a portion of the surface of the applicator roller to the adhesive contained therein and a scraper device engageable with the surface of the applicator roller for scraping adhesive therefrom except for the adhesive that is in the rows of depressions, the improvements in the double-facer unit including an applicator roller having a cylindrical outer surface with spaced depressions distributed relatively uniformly over the surface thereof, mechanisms for maintaining corrugation ridges opposite from the liner side of the single- face web against an arcuate portion of the outer surface of the applicator roller for applying adhesive thereto, and an adhesive container having adhesive therein exposed to the cylindrical surface of the applicator roller in the double- facer unit whereby the adhesive contained in the container is transferred to the surface of the applicator roller including into the depressions therein, a device associated with the adhesive container for scraping excess adhesive from the roller but not from the depressions whereby the adhesive remaining in the depressions is transferred to the corrugation ridges on the single-face web when in contact therewith, and mechanisms for maintaining predetermined tension on the single-face web during the time the adhesive in the depressions is in contact with the corrugation ridges, and a source of a second liner for attaching to the corrugation ridges on the single-face web including mechanism for bringing the second liner into engagement with the corrugation ridges and maintaining the engagement until the adhesive therebetween bonds the members and sets up. The invention also resides in the specific use of a cold-set adhesive in a corrugating apparatus.
595765
Mcfadden Fincham
Thompson Corrugated Systems Inc.
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