A numerical method is given for calculating asymmetric temperature distribution to fiber axis within a filament quenched by cross air flow in the course of melt spinning. And the results of numerical calculation shown in Fig. 9 are obtained for a special spinning condition. It is shown that temperature distribution of spinning filament can be obtained by measuring that of a model cylinder being cooled by cross air flow under the condition of eq. (14-2). Interval r. after of cooling in the model

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... test is connected with distance z from spinneret by eq. (13). The structure (birefringence, density) differentiations across the cross-section of polypropylene and polyester spun fibers are measured and related to the asymmetric temperature distribution of spinning filament. (1) Fig. 1 . Coordinates for calculations.