Lubricant for the production of nylon and polytetramethylene terephthalate net-like structures

A process for the continuous extrusion of nylon through a metal die therefor to form products having at least in part a net structure, the nylon being selected from the group consisting of nylon 6, nylon 6, 10, nylon 6, 13, nylon 11, nylon 12, nylon 13 and nylon 66 or polytetramethylene terephthalate said process comprising:

• a. melt extruding a first plurality of spaced parallel strands of said polymer in molten state continuously through said metal die;
• b. melt extruding a second plurality of spaced parallel strands continuously through said metal die at an angle to the direction of extrusion of the first plurality of strands;
• c. each of said strands of said second plurality of spaced strands being joined to and connected with at least two of the spaced strands of the first plurality of strands at the crossing points in the net structure;
• d. lubricating selected portions of said die metal with a polyolefin comprising a homopolymer of an olefin or copolymer of two or more olefins with a melt index according to ASTM Test D 1238-70 Condition "E" of no greater than 100 in order to maintain the spacing between said strands between crossing points in the net structure by;
• e. blending with said strand polymer for at least one of said sets of plurality of spaced strands from about 1.0 to about 10.0% by weight of said polyolefin.