Foam header assembly

Claim 2

Apparatus for coating and impregnating a non-woven fabric web, comprising supply means for providing coating and impregnating materials, distributor means from said supply means to a plurality of nozzles, all of which nozzles being fixed in a straight line in the same plane, the length of said distributor means from said supply means to each of said nozzles being substantially equal, said distributor means including a plurality of radial distribution chambers each having eminating radially therefrom a tube each communicating with one of said nozzles, said plurality of nozzles providing discharge of coating and impregnating material at the interface of oppositely rotating rolls between which the non-woven fabric web to be coated and impregnated passes to provide and maintain a supply of coating and impregnating material between the interface of the rolls, and means for oscillating said plurality of nozzles parallel to the length of said rolls.

Claim 3

Apparatus according to claim 1 in which said distributor means includes a branching, symmetrical piping system, the sum of the cross sectional areas of each of said branching pipes being equal to the cross sectional area of the pipe from which said branches are connected.

Claim 4

Apparatus according to claim 1 in which at least one of said rolls is adjustable to provide variable pressure between the rolls.

Claim 5

Apparatus according to claim 1 in which the plurality of tubes are flexible.

Claim 6

Apparatus for coating and impregnating a non-woven fabric web, comprising supply means for providing coating and impregnating materials, distributor means from said supply means to a plurality of nozzles, all of which nozzles being fixed in a straight line in the same plane, said distributor means including a branching symmetrical piping system, the sum of the cross sectional areas of each of said branching pipes being equal to the cross sectional area of the pipe from which said branches are connected and the length of said distributor means from said supply means to each of said nozzles being substantially equal, oppositely rotating rolls between which the non-woven fabric web passes, said distributor means including a plurality of radial distribution chambers each having eminating radially therefrom a flexible tube each communicating with one of said nozzles, said plurality of nozzles providing discharge of coating and impregnating material at the interface of said oppositely rotating rolls to provide and maintain a supply of coating and impregnating material from the interface of the rolls, and means for oscillating said plurality of nozzles parallel to the length of said rolls.

Claim 7

Apparatus for coating and impregnating a non-woven fabric web, comprising supply means for providing coating and impregnating materials, distributor means from said supply means to a plurality of nozzles, all of which nozzles being fixed in a straight line in the same plane, said distributor means including a branching symmetrical piping system, the sum of the cross sectional areas of each of said branching pipes being equal to the cross sectional area of the pipe from which said branches are connected and the length of said distributor means from said supply means to each of said nozzles being substantially equal, oppositely rotating rolls between which the non-woven fabric web passes, said distributor means including a plurality of radial distribution chambers each having eminating radially therefrom a flexible tube each communicating with one of said nozzles, said plurality of nozzles providing discharge of coating and impregnating material at the interface of said oppositely rotating rolls to provide and maintain a supply of coating and impregnating material from the interface of the rolls, and means for oscillating said plurality of nozzles parallel to the length of said rolls.