Making Stronger Twine With Matched Strands

Higher tensil strength achieved with same production equipment. Strong twine made by using spools in one of two-step manufacturing process. Three primary strands twisted together in opposite direction to form threeply twine. Technique used successfully in manufacture of safety netting with 600- to 700-lb (2,700-to 3,100-N) tensil strength and 60-ton (54 x 10 to third power kg) tuna seine with area of 86 acres (3.5 x 10 to fifth power m2). Increase in tensil strength of completed twine found experimentally 10 to 12 percent.