Rubber Lining

The lining materials used by Kailash rubber have either been produced by our own mixing factory or by our nearest technical supported partners. Rubber receives its final qualities in a chemical reaction called vulcanization. During this reaction, vulcanization substance within the rubber mixture forms double bonds between elastomer chains, bonding them together permanently. Before vulcanization, the rubber mixture is plastic mass that adapts to the shapes of even the most difficult shaped structures. Vulcanization is usually done in an autoclave. The autoclave is a pressure container, in which rubber material receives its desired qualities and a bonding between the lining material and the basic material is formed under the conditions of approximately 5 bar pressure and temperature of 140 degrees Celsius. There are also rubber mixtures that can be vulcanized in lower heat with the help of, for example, hot water or process temperature.

Lining Application

• Verify rubber is per the specification such as material type, thickness (+/- 10% of spec.), and that it has been properly stored and is inacceptable condition.
• Some rubbers - not all - require “Pre-shrinking”. If so, roll out the material, remove any polyvinyl backing, and allow shrinking.
• Rubber shall be cut using skiving knives or a skiving machine to a 30° angle. Cuts must be straight and smooth.
• Use chalk line or chalk and a straight edge to lay out cuts; do not use layout tools that cut the surface of the rubber.
• If this surface dries too much or becomes dusty, it may need to be made tacky again by wiping with a suitable solvent.
• Unroll and remove the protective cloth as the lining is applied to the prepared steel surface, stitching down the lining as it is applied. Using a combination of rollers with a maximum width of 2 ½” [64mm], and a narrow stitching roller of about 3/16” [5mm] wide.
• Starting in the centre and rolling to the outer edges, ensuring all air is pushed out.
• Lining Application
• Verify rubber is per the specification such as material type, thickness (+/- 10% of spec.), and that it has been properly stored and is inacceptable condition.
• Some rubbers - not all - require “Pre-shrinking”. If so, roll out the material, remove any polyvinyl backing, and allow shrinking.
• Rubber shall be cut using skiving knives or a skiving machine to a 30° angle. Cuts must be straight and smooth.
• Use chalk line or chalk and a straight edge to lay out cuts; do not use layout tools that cut the surface of the rubber.
• If this surface dries too much or becomes dusty, it may need to be made tacky again by wiping with a suitable solvent.
• Unroll and remove the protective cloth as the lining is applied to the prepared steel surface, stitching down the lining as it is applied. Using a combination of rollers with a maximum width of 2 ½” [64mm], and a narrow stitching roller of about 3/16” [5mm] wide.