Calculate length of polyester filament ?

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In this examples are related to filament. Note that for filament we use direct system. In which most popular is denier. There are other units too. For detail consult the tables at the end of the book. Denier is number of grams per 9000 meters of filament.

For calculation related to denier we use following equations:

Length of filament in meters = Weight of filament in grams* 9000

                                                            Denier

                                                           

Weight of filament in grams = Length in meters * denier                                                                                                   9000

Denier = 9000* Weight of filament in grams

            Length of filament in meters 

Calculate length of polyester filament from the given data:

Weight              690 grams

Denier                75

Equation: 

Length of filament

        in meters  = Weight of filament in grams* 9000

                                             Denier

                                                                        

                        = 690 * 9000

                                  75

                        =82800 meters