Calendering Process For Rubber Ppt

Calendering process of smoothing and compressing a material notably paper during production by passing a single continuous sheet through a number of pairs of heated rolls the rolls in combination are called calenders.

Calendering process for rubber ppt.

Calendering rubber at b d technical polymer ltd. Groover fundamentals of modern manufacturing 2 e 19. Roller die process combination of extrusion and calendering that results in better quality product than either extrusion or calendering alonefigure 14 2 roller die process rubber extrusion followed by rolling 2002 john wiley sons inc. The major application of rubber calendering machine is to press the mixed and refined rubber mixture it also can be applied to rubber sheets in single or dou.

Introduction a calender is a device used to process a polymer melt into a sheet or film. Rubber calendering is the mechanical process by which rubber is pressed into textiles cloth fabric tire cord forming composite sheets. Calendaring is the process of squeezing a plastic melt between two or more counter rotating cylinders or rolls to form a continuous film and sheet. Corporate training and planning calendering process basic principle.

While these sources are closely related for quicker understanding you may visualize and attribute the two main sources of variations in calendered gauge or thickness as. A calender is a device used to process a polymer melt into a sheet or film. In the calendering process fabric and rubber or plastic material is passed through a series of rollers to flatten smooth and commingle the two or more materials. Finishing textures and coatings can also be applied to the product.

Calendering was originally developed to process rubber but today is widely used to make thermoplastic films sheets and coatings. The art of forming a plastic sheet has been adopted from the technique of making paper metal and rubber in industries corporate training and planning. Calender rolls are constructed of steel with a hardened surface or steel covered with fibre. For example goodyear rubber is capable of rubber calendering 60 wide and 0 020 0 500 thick continuous roll lengths.

In paper production they typically exert a pressure of 500 pounds per linear.