Bonding machine and gravure applicator roll

Claim 3

A system in accordance with claim 1 wherein the width of each pattern is equal to the distance between the crests of the corrugated medium.

Claim 4

A system in accordance with claim 1 wherein the speed of the medium is substantially equal to the surface speed of the applicator roll.

Claim 5

A system in accordance with claim 1 wherein said applicator roll has a continuous circumferential surface on a portion of its periphery.

Claim 6

Apparatus in accordance with claim 1 wherein the cells of one row of one of said patterns have a depth which is different from the depth of cells in another row of said one pattern.

Claim 7

A single facer machine comprising a frame, a pair of meshing fluted rolls for corrugating a web of material fed therebetween, an adhesive applicator roll juxtaposed to one of said fluted rolls for applying a liquid bonding agent to the tips of a corrugated medium supported by said one roll, a vessel for holding a supply of the bonding agent, motor means for rotating said applicator roll and said one of said fluted rolls in synchronized fashion, the improvement comprising the surface of the applicator roll being provided with successive patterns of cells, each pattern of cells including axially extending rows having progressively greater volume, and means for selectively adjusting the phase relationship between said applicator roll and said one fluted roll to vary the amount of bonding agent transferred from said cells to the crests of the corrugated medium.

Claim 8

A single facer machine comprising a frame, a pair of meshing fluted rolls for corrugating a web of material fed therebetween, an adhesive applicator roll juxtaposed to one of said fluted rolls for applying a liquid bonding agent to the tips of a corrugated medium supported by said one roll, a vessel for holding a supply of the bonding agent, motor means for rotating said applicator roll and said one of said fluted rolls in synchronized fashion, the improvement comprising the surface of the applicator roll being provided with successive patterns of cells, each pattern of cells including axially extending rows having progressively greater volume, and means for selectively adjusting the phase relationship between said applicator roll and said one fluted roll to vary the amount of bonding agent transferred from said cells to the crests of the corrugated medium.

Claim 9

Apparatus in accordance with claim 6 wherein the circumferential width of each pattern is equal to the pitch of the flutes on said fluted rolls.

Claim 10

Apparatus in accordance with claim 6 wherein each pattern includes pairs of rows, the cells in one pair of rows being of substantially equal volume.

Claim 11

An applicator roll for applying a liquid bonding agent to a web of material such as paper comprising a cylindrical roll having a journal at each end for rotatably supporting the same, the surface of said roll being provided with successive patterns of different sized cells, each pattern comprising axially extending rows of cells, the cells in a row being of substantially constant volume.

Claim 12

An applicator roll for applying a liquid bonding agent to a web of material such as paper comprising a cylindrical roll having a journal at each end for rotatably supporting the same, the surface of said roll being provided with successive patterns of different sized cells, each pattern comprising axially extending rows of cells, the cells in a row being of substantially constant volume.

Claim 13

Apparatus in accordance with claim 9 wherein each pattern includes successive pairs of rows, each row of a pair having the same depth and circumferential width at the periphery of the roll.

Claim 14

Apparatus in accordance with claim 9 including a continuous circumferential surface on a portion of the periphery of said roll at spaced locations along the length of said roll.

Claim 15

Apparatus in accordance with claim 9 wherein each pattern has three rows of cells each of a different volume.