Double facer with threading means

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156205, 156470, 493463, B31F 120

Patent

active

059935871

ABSTRACT:
This invention relates to a double facer of a corrugating machine which aims to improve a drying state or bonding state between a single-faced corrugated fiberboard sheet and a liner and improve the quality of a corrugated fiberboard sheet. In a double facer for bonding together a single-faced corrugated fiberboard sheet and a liner to form a corrugated fiberboard sheet, provided are a heating member disposed along a conveying direction of the corrugated fiberboard sheet; a pressing unit, disposed so as to oppose the heating member, for pushing the corrugated fiberboard sheet against the heating member; a sheet conveying unit, disposed downstream the heating member, for conveying the corrugated fiberboard sheet; and a sheet feeding unit for feeding the corrugated fiberboard sheet toward the sheet conveying unit; while the pressing unit comprises a plurality of pressing devices disposed in series as being separated from each other along the conveying direction of the corrugated fiberboard sheet.

REFERENCES:
patent: 3616073 (1971-10-01), McGirr
patent: 3712843 (1973-01-01), Gartaganis et al.
patent: 3963161 (1976-06-01), Jerney et al.
patent: 4580710 (1986-04-01), Ledgerwood
patent: 5456783 (1995-10-01), Sissons
patent: 5466329 (1995-11-01), Marachke
patent: 5526739 (1996-06-01), Lauderbaugh et al.
patent: 5732622 (1998-03-01), Lauderbaugh

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