Was fairly common for older European washing machines to have an "Easy Cares" cycle that allowed temps ranging from hot to boil wash territory.
My Miele W1070 will allow 200 degrees F for delicates, easy cares along with normal cottons/linens.
What matters with synthetic fibers is more about drum rhythm, and cooling down wash before any spinning. This and limiting final spin to short durtion.
Polyester and other man made fibers often profit from a good hot wash. Commercial laundries do such fabrics at 140F to 160F, but they cool down gradually and of course don't extract between changes of water.
My Miele W1070 will allow 200 degrees F for delicates, easy cares along with normal cottons/linens.
What matters with synthetic fibers is more about drum rhythm, and cooling down wash before any spinning. This and limiting final spin to short durtion.
Polyester and other man made fibers often profit from a good hot wash. Commercial laundries do such fabrics at 140F to 160F, but they cool down gradually and of course don't extract between changes of water.