Cooling apparatus of a false texturing machine

A false texturing machine comprising:

• a false twisting device for imparting twists to a yarn;
• a heating apparatus disposed upstream from said false twisting device for heat-setting the twists imparted to the yarn by the false twisting device;
• and
• a cooling apparatus for cooling the yarn, the cooling apparatus being disposed between the false twisting device and the heating apparatus and including:
• at least two adjacent yarn contacting and cooling surfaces which contact and cool the yarn and are divided by a non-yarn contacting zone in which the yarn is not contacted by the cooling apparatus, and a pressing member for pressing the yarn into the non-yarn contacting zone in a direction which forces the yarn against the yarn contacting surfaces;
• wherein each of the yarn contacting surfaces has a length between 100 and 500 mm, the combined length of the yarn contacting surfaces is between 1000 and 3000 mm, and wherein an angle formed between a line connecting the at least two yarn contacting surfaces and the yarn pressed by the pressing member in said direction is greater than 0.degree. but less than 30.degree..

A false texturing machine for treating yarn comprising:

• a false twisting device for imparting twists to a yarn passing through the machine;
• a heating apparatus for heat-setting the twists imparted to the yarn by the false-twisting device, the heating apparatus being disposed upstream from the false twisting device with the twists running along the yarn from the false-twisting device toward the heating apparatus;
• and
• a cooling apparatus for cooling the yarn, the cooling apparatus being disposed between the heating apparatus and the false twisting device, the cooling apparatus including:
• a one-piece cooling plate with a surface a portion of which contacts and cools the yarn, the cooling plate surface defining a plurality of individual yarn contacting surfaces separated by non-yarn contacting portions which are formed by recesses in the surface, the recesses each being disposed between two adjacent yarn contacting surfaces such that the yarn contacting surfaces and the non-yarn contacting portions are alternately disposed along a length of the cooling plate;
• and
• a pressing member disposed adjacent each non-yarn contacting portion which presses the yarn into a portion of the recess to reduce the occurrence of ballooning of the yarn.