IL30767A - Process for proofing corrugated cardboard and apparatus for putting the process into practice - Google Patents

Description

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Claims (1)

1. 29 Apparatus for impregnating longitudinally corrugated board having a serpentine fibrous layer defining at least one planar fibrous layer succession of transversely extending stationary supply means for supplying adjacent one longitudinal edge of said board mixture of particles of an impregnating material and a gaseous steam carrier and stationary suction means arranged cent the other ongitudinal edge of said board for establishing a in said to draw the impregnating material Apparatus according to claim said corrugated board is horizontally arranged and said supply means and said suction means are horizontally spaced adjacent opposite edges of the boardv Apparatus according to claim 1 or wherein each of said supply and means includes a channel extending longitudinally of the channel containing opposed longitudinal recesses for receiving the longitudinal edge portions of said Apparatus according to claim further including seal scans connected with said channel members and cooperating with at least one outer surface of the board to the chambers defined by said channel Apparatus according to any of claims 1 to wherein said impregnant supply includes a source of said and for said gaseous carrier fluid with said impregnating 30 Apparatus c ita wherein said is a further including regulating the concentration said impregnating relative to said carrier fluid prio to impregnation of the corrugated Apparatus according to 6 further means for at least one of said impregnating and carrier Apparatus according to claim 6 wherein supply comprises for establishing adjacent one end of the board a spray curtain of said and carrier whereby said curtain is drawn by suction into said flutes by said suction Apparatus according to claim wherein said material comprises a solid pparatus according to any of 1 to said iapregnant material a synthetic plastic foaming according to any of 1 to 10 further ding for coating at least one outer surface of the prior to passage between said supply and said suction to prevent outward dispersion of said impregnating material to said board outer Apparatus according to claim wherein said coating means comprises means applying to the outer surface of the board a water operable to maintain said outer board surface free of impregnating whereby upon subsequent evaporation of the water the board surface is adapted for printing or Apparatus according to any of claims to wherein said suction means is also spaced longitudinally of said s relative to the direction of travel of said Apparatus accor ing to any of 3 to wherein said supply includes defining in said supply channel a plurality of longitudinal spaced supply further including control means for regulating the supply of to said supply Apparatus according to any of 3 to further including xaeans defining in said supply at least one additional sons arranged longitudinally of the board relative to said supply and for supplying an additional fluid to said additional Apparatus according to wherein said additional fluid a heated Apparatus according to clais wherein said additiona fluid comprises a cooling Apparatus according any of claims 3 to said suction channel means defining a plurality of longitudinally arranged suction and regulating for controlling the degree of vacuum in said suction Apparatus according to any of claims 1 to said stationar supply means jet for introducing impregnating under high pressure in absence of according to of claims 1 to wherein said means jet nozzle for introducing a of air and liquid impregnating into said Apparatus for impregnating travelling corrugated board substantially as hereinbefore described with reference to the accompanying The method of impregnating longitudinally travelling gated board having a fibrous serpentine layer defining with at least one planar fibrous layer flutes that extend versely of the comprising the steps of the board longitudinally in a horizontal supplying adjacent one longitudinal edge of the board a of ticles of an impregnating material a gaseous steam carrier and applying suction to the opposite edge of the board to establish a vacuus within the flutes and thereby draw the impregnating material The method according to claim further including the step of applying to at one outer surface of the board prior to of the board the supply a layer of coating of sufficient thickness to prevent outward dispersion of the material to the external surfaces of said outer The method according to wherein coating material comprises a film of The method according to any of claims 23 to further including the step of varying the of at least one of said impregnating and carrier according to any of 22 to 25 further including 33 The According to of 22 to 26 wherein said is to of spaced supply stones relative to said farther including the step of tively regulating the flow of said The method according to claim said material la withdrawn various spaced zones relative to said further including for regulating the degree vacuum established said The method according to any of claims 22 to wherein said impregnating material supplying step includes spraying impregnating into said The method according to wherein said impregnating material is sprayed with a carrier selected the group consisting of gas and steas into said Method of impregnating longitudinally corrugated substantially as hereinbefore described with reference to the Corrugated board whenever by the method according to any of Claims 22 to For the Applicants Yitzhak insufficientOCRQuality