Abstract: A process for forming irrigation drip tape includes, broadly, the steps of a) supplying a longitudinally continuous strip of flexible plastic material in a first direction; b) heating a narrow band of the strip along a longitudinal axis thereof; c) depositing a continuous bead of material on an upper surface of the strip, along the narrow band, while the strip moves in the one direction; d) cooling the strip and the bead; e) folding the strip longitudinally so that the longitudinal edges overlap; and f) sealing said longitudinal edges to form a tubular drip tape with a longitudinal, overlapped seam, with the bead extending parallel to the seam and in opposed, facing relationship thereto.

Abstract: A process for forming irrigation drip tape includes, broadly, the steps of a) supplying a longitudinally continuous strip of flexible plastic material in a first direction; b) heating a narrow band of the strip along a longitudinal axis thereof; c) depositing a continuous bead of material on an upper surface of the strip, along the narrow band, while the strip moves in the one direction; d) cooling the strip and the bead; e) folding the strip longitudinally so that the longitudinal edges overlap; and f) sealing said longitudinal edges to form a tubular drip tape with a longitudinal, overlapped seam, with the bead extending parallel to the seam and in opposed, facing relationship thereto.

Abstract: Drip tape for below or above ground irrigation includes a sheet of material formed into a tube by overlapping opposite side edges of the sheet and bonding the side edges along a longitudinal seam thereby forming a primary flow path. A strip of transparent material is bonded to an interior surface of the sheet prior to seaming, at a location remote from the longitudinal seam so as to define, in combination with the tape wall, a plurality of secondary flow paths within the primary flow path. Each secondary flow path includes an inlet region, a turbulence inducing region and an outlet region; the inlet region including a plurality of inlets in the second strip connecting the primary flow path to the secondary flow path upstream of the turbulence inducing region; the outlet region including an outlet in the tube connecting the secondary flow path to atmosphere downstream of the turbulence inducing region.

Abstract: Drip irrigation apparatus for a container having a plant growing therein in soil in the container including a through access opening preferably in the side of the container. A length of tubing extending from outside to inside the opening and an inside and an outside female adapter secured on opposite ends of the length of tubing by threaded connections or by bonding. The adapters have larger diameters than the opening and a washer on the length of tubing so that the opening is sealed against loss of soil therethrough. The inside adapter and the outside adapter have extending inwardly and outwardly thereof respectively an inside barbed fitting and an outside barbed fitting. Inside flexible tubing at one end connecting to the inside fitting to direct water to irrigate inside the containers. Inside flexible tubing at one end connecting to the outside flexible tubing and connecting at the other end to a source of water. A male adapter can be substituded for one female adapter and the length of tubing.