When a smooth, flat surface is needed, such as cotton, linen, silk and various man-made fabrics and polymers such as vinyl and ABS polymer sheets, and to a lesser extent HDPE, calendering can also be applied to paper Outside the material, polypropylene and polystyrene.
The calender is also an important processing machine in the rubber industry, particularly the manufacture of tires, for the inner and fabric layers.
Calendering machine can also be used to polish or create evenly coated coatings on the substrate - the older use is to polish the tape, which is much faster than the web. More recently, it has been used to produce certain types of secondary batteries (such as spiral wound or prismatic lithium ion batteries) to achieve uniform thicknesses of the electrode material coating on the collector foil.
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