Abstract: The invention provides a method for producing a drip irrigation line, comprising a continuous tubing with spaced-apart drip outlets and a plurality of self-regulating emitter elements for drip irrigation arranged therein, wherein each of said elements is made from a thermoplastic material, injection-molded as a single unit, which material is cross-linked for improved elasticity, said method comprising sequentially introducing a plurality of said emitter elements at predetermined intervals into the extrusion head of a continuous tubing-producing extruder, whereby said elements are each heat-welded within said tubing before the cooling thereof and subsequently cross-linking said thermoplastic material of each of said elements while inside said continuous tubing.
Type:
Grant
Filed:
May 5, 2000
Date of Patent:
June 11, 2002
Assignee:
Plassin Technical Plastics Works for Agriculture, Industry
and Building Ltd.