Natural rubber waste rubber cups, rubber filaments, waste natural rubber products and other rubber waste processed latex reclaimed rubber, also known as natural reclaimed rubber, can replace a certain proportion of natural rubber to produce various model rubber products and extruded rubber products, effectively reducing Raw material costs. When using latex reclaimed rubber to produce extruded rubber, especially extruded hoses with thin inner walls, the rubber filtering process is indispensable. So what role does the strainer play in the production of natural reclaimed rubber extrusion products? What problems should be paid attention to during the rubber filtering process?
1. The role of the filter process
When using natural reclaimed rubber or natural rubber/latex reclaimed rubber alone and using rubber to produce thin-walled extruded products or extruded hoses with high quality requirements, impurities in the rubber will seriously damage the air tightness of the product. Tearing resistance, etc., so the cleanliness of the rubber material used is very demanding. In the production process of this kind of rubber products, the rubber material is filtered, which can effectively remove the impurities in the rubber material. In actual production, the filtered latex reclaimed rubber has high fineness and no impurities, and can directly produce thin-walled extruded products.
2. How to carry out the filtering process
The rubber strainer process is carried out in the rubber strainer. The main function of the rubber strainer is to remove the mechanical impurities in the rubber 2YLYY89. The rubber strainer generally adopts double-headed, equidistant, equal-depth threads, with a length-to-diameter ratio of L/D=5, which improves the plasticity of the rubber and facilitates the filter. The natural reclaimed rubber should be heat-mixed before filtering; the mixed rubber generates a lot of heat during filtration, so the cooling of the rubber filter must be strengthened. Generally, the natural rubber material after filtration does not exceed 130°C, and the latex reclaimed rubber should be used for filtering. The temperature.
3. Precautions when filtering natural reclaimed rubber
When the natural latex reclaimed rubber is used to filter the rubber, the cleanliness of the filter must be paid attention to, and the filter should be changed frequently. When there are few impurities in the rubber material, the filter screen can be filtered for more than 30 cars; when the rubber material contains more impurities, the filter screen must be replaced every 6-7 materials; otherwise the debris gathered on the surface of the filter screen will hinder the glue Material filtering, severe cases will squeeze the filter screen. In the general production process, the content of impurities in the reclaimed latex rubber after filtration treatment is very small.
In the process of filtering the rubber, the filtering speed of the rubber material is reduced or the groove marks appear on the rubber strip, which indicates that part of the mesh is blocked; if the filtering speed of individual rubber strips is particularly fast, it indicates that the mesh is broken and must be replaced. After the natural reclaimed rubber is filtered, it can be extruded and cooled by an open mill. In order to prevent heat and scorching of the rubber during filtration, sulfur or accelerators can be added after the rubber is cooled.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits