Abstract: A nozzle and a process suitable for dispensing liquid foamable products, particularly useful with carbon dioxide blowing agents, the nozzle comprising a tubular exit zone having an inlet and an outlet; the tubular exit zone having an inner wall surface defining a passageway for dispensing having a centerline axis; the tubular exit zone further having a plurality of vanes attached to the inner wall surface parallel to the centerline axis with the vanes extending radially into the passageway for dispensing; the vanes having a length dimension, a thickness dimension, and a width dimension; and wherein the vanes do not connect or touch at the centerline of the passageway for dispensing.

Abstract: A process for spraying a band of foam of desired width on a surface, comprising a) providing a pressurized source of foamable material b) dispensing onto a surface a fan spray of the foamable material from a dispensing nozzle, and c) moving the dispensing nozzle perpendicular to the centerline plane of the fan spray to form the band of foam; wherein the dispensing nozzle comprises an exit orifice connected to a fan spray tip, the fan spray tip having a transverse slot in the exit face of the dispensing nozzle formed from spray-limiting walls, the transverse slot having a curved vertex end having vertex and an exit face end, and wherein the exit orifice has a dimension L parallel to the transverse slot; the facing surfaces of the spray-limiting walls are set apart a dimension of W, with W less than or equal to dimension L; the transverse slot having an overall depth D measured from the exit face to the vertex of the transverse slot, and the ratio of D:W is 0.30 to 2.40.

Abstract: A nozzle and a process suitable for dispensing liquid foamable products, particularly useful with carbon dioxide blowing agents, the nozzle comprising a tubular exit zone having an inlet and an outlet; the tubular exit zone having an inner wall surface defining a passageway for dispensing having a centerline axis; the tubular exit zone further having a plurality of vanes attached to the inner wall surface parallel to the centerline axis with the vanes extending radially into the passageway for dispensing; the vanes having a length dimension that is the distance the vane contacts the inner wall surface parallel to the centerline axis, a thickness dimension that is the effective thickness of the vane at the inner wall surface perpendicular to the centerline axis, and a width dimension being the distance from the inner wall surface that the vane extends into the passageway for dispensing; and wherein the vanes do not connect or touch at the centerline of the passageway for dispensing.